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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 16:28:20 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 16:28:20 +0000 |
commit | dcc721a95bef6f0d8e6d8775b8efe33e5aecd562 (patch) | |
tree | 66a2774cd0ee294d019efd71d2544c70f42b2842 /plugins | |
parent | Initial commit. (diff) | |
download | rsyslog-dcc721a95bef6f0d8e6d8775b8efe33e5aecd562.tar.xz rsyslog-dcc721a95bef6f0d8e6d8775b8efe33e5aecd562.zip |
Adding upstream version 8.2402.0.upstream/8.2402.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plugins')
176 files changed, 87998 insertions, 0 deletions
diff --git a/plugins/fmhttp/Makefile.am b/plugins/fmhttp/Makefile.am new file mode 100644 index 0000000..d4743e9 --- /dev/null +++ b/plugins/fmhttp/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = fmhttp.la + +fmhttp_la_SOURCES = fmhttp.c +fmhttp_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) $(CURL_CFLAGS) $(LIBLOGGING_STDLOG_CFLAGS) +fmhttp_la_LDFLAGS = -module -avoid-version +fmhttp_la_LIBADD = $(CURL_LIBS) diff --git a/plugins/fmhttp/Makefile.in b/plugins/fmhttp/Makefile.in new file mode 100644 index 0000000..5bd4ab3 --- /dev/null +++ b/plugins/fmhttp/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +am__is_gnu_make = { \ + if test -z '$(MAKELEVEL)'; then \ + false; \ + elif test -n '$(MAKE_HOST)'; then \ + true; \ + elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \ + true; \ + else \ + false; \ + fi; \ +} +am__make_running_with_option = \ + case $${target_option-} in \ + ?) ;; \ + *) echo "am__make_running_with_option: internal error: invalid" \ + "target option '$${target_option-}' specified" >&2; \ + exit 1;; \ + esac; \ + has_opt=no; \ + sane_makeflags=$$MAKEFLAGS; \ + if $(am__is_gnu_make); then \ + sane_makeflags=$$MFLAGS; \ + else \ + case $$MAKEFLAGS in \ + *\\[\ \ ]*) \ + bs=\\; \ + sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \ + | sed "s/$$bs$$bs[$$bs $$bs ]*//g"`;; \ + esac; \ + fi; \ + skip_next=no; \ + strip_trailopt () \ + { \ + flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \ + }; \ + for flg in $$sane_makeflags; do \ + test $$skip_next = yes && { skip_next=no; continue; }; \ + case $$flg in \ + *=*|--*) continue;; \ + -*I) strip_trailopt 'I'; skip_next=yes;; \ + -*I?*) strip_trailopt 'I';; \ + -*O) strip_trailopt 'O'; skip_next=yes;; \ + -*O?*) strip_trailopt 'O';; \ + -*l) strip_trailopt 'l'; skip_next=yes;; \ + -*l?*) strip_trailopt 'l';; \ + -[dEDm]) skip_next=yes;; \ + -[JT]) skip_next=yes;; \ + esac; \ + case $$flg in \ + *$$target_option*) has_opt=yes; break;; \ + esac; \ + done; \ + test $$has_opt = yes +am__make_dryrun = (target_option=n; $(am__make_running_with_option)) +am__make_keepgoing = (target_option=k; $(am__make_running_with_option)) +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = plugins/fmhttp +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/ac_check_define.m4 \ + $(top_srcdir)/m4/atomic_operations.m4 \ + $(top_srcdir)/m4/atomic_operations_64bit.m4 \ + $(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltoptions.m4 \ + $(top_srcdir)/m4/ltsugar.m4 $(top_srcdir)/m4/ltversion.m4 \ + $(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/configure.ac +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +DIST_COMMON = $(srcdir)/Makefile.am $(am__DIST_COMMON) +mkinstalldirs = $(install_sh) -d +CONFIG_HEADER = $(top_builddir)/config.h +CONFIG_CLEAN_FILES = +CONFIG_CLEAN_VPATH_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; +am__vpath_adj = case $$p in \ + $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ + *) f=$$p;; \ + esac; +am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`; +am__install_max = 40 +am__nobase_strip_setup = \ + srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'` +am__nobase_strip = \ + for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||" +am__nobase_list = $(am__nobase_strip_setup); \ + for p in $$list; do echo "$$p $$p"; done | \ + sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \ + $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \ + if (++n[$$2] == $(am__install_max)) \ + { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \ + END { for (dir in files) print dir, files[dir] }' +am__base_list = \ + sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \ + sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' +am__uninstall_files_from_dir = { \ + test -z "$$files" \ + || { test ! 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install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/fmhttp/fmhttp.c b/plugins/fmhttp/fmhttp.c new file mode 100644 index 0000000..c465b23 --- /dev/null +++ b/plugins/fmhttp/fmhttp.c @@ -0,0 +1,188 @@ +/* fmhttp.c + * This is a function module for http functions. + * + * File begun on 2018-03-16 by JGerhards + * + * Copyright 2010-2018 Rainer Gerhards, Jan Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <errno.h> +#include <ctype.h> +#include <curl/curl.h> +#include "errmsg.h" +#include "conf.h" +#include "syslogd-types.h" +#include "template.h" +#include "msg.h" +#include "parserif.h" +#include "module-template.h" +#include "rainerscript.h" +#include "unicode-helper.h" + +MODULE_TYPE_FUNCTION +MODULE_TYPE_NOKEEP +DEF_FMOD_STATIC_DATA + +struct curl_funcData { + const char *reply; + size_t replyLen; +}; + +/* curl callback for doFunc_http_request */ +static size_t +curlResult(void *ptr, size_t size, size_t nmemb, void *userdata) +{ + char *buf; + size_t newlen; + struct cnffunc *const func = (struct cnffunc *) userdata; + assert(func != NULL); + struct curl_funcData *const curlData = (struct curl_funcData*) func->funcdata; + assert(curlData != NULL); + + if(ptr == NULL) { + LogError(0, RS_RET_ERR, "internal error: libcurl provided ptr=NULL"); + return 0; + } + + newlen = curlData->replyLen + size*nmemb; + if((buf = realloc((void*)curlData->reply, newlen + 1)) == NULL) { + LogError(errno, RS_RET_ERR, "rainerscript: realloc failed in curlResult"); + return 0; /* abort due to failure */ + } + memcpy(buf+curlData->replyLen, (char*)ptr, size*nmemb); + curlData->replyLen = newlen; + curlData->reply = buf; + return size*nmemb; +} + +static void ATTR_NONNULL() +doFunc_http_request(struct cnffunc *__restrict__ const func, + struct svar *__restrict__ const ret, + void *__restrict__ const usrptr, + wti_t *__restrict__ const pWti) +{ + struct svar srcVal; + int bMustFree; + cnfexprEval(func->expr[0], &srcVal, usrptr, pWti); + char *url = (char*) var2CString(&srcVal, &bMustFree); + + int resultSet = 0; + CURL *handle = NULL; + CURLcode res; + assert(func != NULL); + struct curl_funcData *const curlData = (struct curl_funcData*) func->funcdata; + assert(curlData != NULL); + rsRetVal iRet __attribute__((unused)) = RS_RET_OK; + + CHKmalloc(handle = curl_easy_init()); + curl_easy_setopt(handle, CURLOPT_NOSIGNAL, TRUE); + curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, curlResult); + curl_easy_setopt(handle, CURLOPT_WRITEDATA, func); + + curl_easy_setopt(handle, CURLOPT_URL, url); + res = curl_easy_perform(handle); + if(res != CURLE_OK) { + LogError(0, RS_RET_IO_ERROR, + "rainerscript: http_request to failed, URL: '%s', error %s", + url, curl_easy_strerror(res)); + ABORT_FINALIZE(RS_RET_OK); + } + + + CHKmalloc(ret->d.estr = es_newStrFromCStr(curlData->reply, curlData->replyLen)); + ret->datatype = 'S'; + resultSet = 1; + +finalize_it: + free((void*)curlData->reply); + curlData->reply = NULL; + curlData->replyLen = 0; + + if(handle != NULL) { + curl_easy_cleanup(handle); + } + if(!resultSet) { + /* provide dummy value */ + ret->d.n = 0; + ret->datatype = 'N'; + } + if(bMustFree) { + free(url); + } + varFreeMembers(&srcVal); +} + +static rsRetVal ATTR_NONNULL(1) +initFunc_http_request(struct cnffunc *const func) +{ + DEFiRet; + + func->destructable_funcdata = 1; + CHKmalloc(func->funcdata = calloc(1, sizeof(struct curl_funcData))); + if(func->nParams != 1) { + parser_errmsg("rsyslog logic error in line %d of file %s\n", + __LINE__, __FILE__); + FINALIZE; + } + +finalize_it: + RETiRet; +} + +static void ATTR_NONNULL(1) +destructFunc_http_request(struct cnffunc *const func) +{ + if(func->funcdata != NULL) { + free((void*) ((struct curl_funcData*)func->funcdata)->reply); + } +} + +static struct scriptFunct functions[] = { + {"http_request", 1, 1, doFunc_http_request, initFunc_http_request, destructFunc_http_request}, + {NULL, 0, 0, NULL, NULL, NULL} //last element to check end of array +}; + +BEGINgetFunctArray +CODESTARTgetFunctArray + *version = 1; + *functArray = functions; +ENDgetFunctArray + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_FMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + dbgprintf("rsyslog fmhttp init called, compiled with version %s\n", VERSION); +ENDmodInit diff --git a/plugins/im3195/Makefile.am b/plugins/im3195/Makefile.am new file mode 100644 index 0000000..5af0b6f --- /dev/null +++ b/plugins/im3195/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = im3195.la + +im3195_la_SOURCES = im3195.c +im3195_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) 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Also, + * the module does not yet properly handle the recovery case. If someone + * intends to put this module into production, good testing should be + * made and it also is a good idea to notify me that you intend to use + * it in production. In this case, I'll probably give the module another + * cleanup. I don't do this now because so far it looks just like a big + * waste of time. -- rgerhards, 2008-04-16 + * + * \author Rainer Gerhards <rgerhards@adiscon.com> + * + * Copyright (C) 2003-2018 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" + +#include <stdio.h> +#include <unistd.h> +#include <sys/errno.h> +#include <assert.h> +#include "rsyslog.h" +#include "dirty.h" +#include "liblogging/liblogging.h" +#include "liblogging/srAPI.h" +#include "liblogging/syslogmessage.h" +#include "module-template.h" +#include "cfsysline.h" +#include "msg.h" +#include "errmsg.h" +#include "unicode-helper.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP + +/* Module static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(prop) + +/* configuration settings */ + +struct modConfData_s { + EMPTY_STRUCT; +}; + +static int listenPort = 601; + +/* we use a global API object below, because this listener is + * not very complex. As such, this hack should not harm anything. + * rgerhards, 2005-10-12 + */ +static srAPIObj* pAPI; + +static prop_t *pInputName = NULL; +/* there is only one global inputName for all messages generated by this module */ + + +/* This method is called when a message has been fully received. + * It passes the received message to the rsyslog main message + * queue. Please note that this callback is synchronous, thus + * liblogging will be on hold until it returns. This is important + * to note because in an error case we might stay in this code + * for an extended amount of time. So far, we think this is the + * best solution, but real-world experience might tell us a + * different truth ;) + */ +#ifdef __GNUC__ +#pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif +static void OnReceive(srAPIObj __attribute__((unused)) *pMyAPI, srSLMGObj* pSLMG) +{ + uchar *pszRawMsg; + uchar *fromHost = (uchar*) "[unset]"; /* TODO: get hostname */ + uchar *fromHostIP = (uchar*) "[unset]"; /* TODO: get hostname */ + + srSLMGGetRawMSG(pSLMG, &pszRawMsg); + + parseAndSubmitMessage(fromHost, fromHostIP, pszRawMsg, strlen((char*)pszRawMsg), + PARSE_HOSTNAME, eFLOWCTL_FULL_DELAY, pInputName, NULL, 0, NULL); +} + + +#if 0 +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf +#endif + + +BEGINrunInput +CODESTARTrunInput + /* this is an endless loop - it is terminated when the thread is + * signalled to do so. This, however, is handled by the framework, + * right into the sleep below. + */ + while(!pThrd->bShallStop) { + /* now move the listener to running state. Control will only + * return after SIGUSR1. + */ + if((iRet = (rsRetVal) srAPIRunListener(pAPI)) != RS_RET_OK) { + LogError(0, NO_ERRCODE, "error %d running liblogging listener - im3195 " + "is defunct", iRet); + FINALIZE; /* this causes im3195 to become defunct; TODO: recovery handling */ + } + } +finalize_it: +ENDrunInput + + +BEGINwillRun +CODESTARTwillRun + if((pAPI = srAPIInitLib()) == NULL) { + LogError(0, NO_ERRCODE, "error initializing liblogging - im3195 is defunct"); + ABORT_FINALIZE(RS_RET_ERR); + } + + if((iRet = (rsRetVal) srAPISetOption(pAPI, srOPTION_BEEP_LISTENPORT, listenPort)) != RS_RET_OK) { + LogError(0, NO_ERRCODE, "error %d setting liblogging listen port - im3195 is defunct", iRet); + FINALIZE; + } + + if((iRet = (rsRetVal) srAPISetupListener(pAPI, OnReceive)) != RS_RET_OK) { + LogError(0, NO_ERRCODE, "error %d setting up liblogging listener - im3195 is defunct", iRet); + FINALIZE; + } + +finalize_it: +ENDwillRun + + +BEGINafterRun +CODESTARTafterRun + dbgprintf("Shutting down rfc3195d. Be patient, this can take up to 30 seconds...\n"); + srAPIShutdownListener(pAPI); +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + srAPIExitLib(pAPI); /* terminate liblogging */ + /* global variable cleanup */ + if(pInputName != NULL) + prop.Destruct(&pInputName); + /* release objects we used */ + objRelease(prop, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +ENDqueryEtryPt + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + listenPort = 601; + return RS_RET_OK; +} + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(prop, CORE_COMPONENT)); + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"input3195listenport", 0, eCmdHdlrInt, NULL, &listenPort, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); + + CHKiRet(prop.Construct(&pInputName)); + CHKiRet(prop.SetString(pInputName, UCHAR_CONSTANT("im3195"), sizeof("im3195") - 1)); + CHKiRet(prop.ConstructFinalize(pInputName)); + +ENDmodInit diff --git a/plugins/imdiag/Makefile.am b/plugins/imdiag/Makefile.am new file mode 100644 index 0000000..33e86e9 --- /dev/null +++ b/plugins/imdiag/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = imdiag.la + +imdiag_la_SOURCES = imdiag.c +imdiag_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +imdiag_la_LDFLAGS = -module -avoid-version +imdiag_la_LIBADD = diff --git a/plugins/imdiag/Makefile.in b/plugins/imdiag/Makefile.in new file mode 100644 index 0000000..69c8fd2 --- /dev/null +++ b/plugins/imdiag/Makefile.in @@ -0,0 +1,796 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/imdiag/imdiag.c b/plugins/imdiag/imdiag.c new file mode 100644 index 0000000..774939a --- /dev/null +++ b/plugins/imdiag/imdiag.c @@ -0,0 +1,943 @@ +/* imdiag.c + * This is a testbench tool. It started out with a broader scope, + * but we dropped this idea. To learn about rsyslog runtime statistics + * have a look at impstats. + * + * File begun on 2008-07-25 by RGerhards + * + * Copyright 2008-2023 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdio.h> +#include <stdlib.h> +#include <assert.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <stdarg.h> +#include <ctype.h> +#include <signal.h> +#include <netinet/in.h> +#include <netdb.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <pthread.h> +#include <semaphore.h> +#if HAVE_FCNTL_H +#include <fcntl.h> +#endif +#include "rsyslog.h" +#include "dirty.h" +#include "cfsysline.h" +#include "module-template.h" +#include "unicode-helper.h" +#include "net.h" +#include "netstrm.h" +#include "errmsg.h" +#include "tcpsrv.h" +#include "srUtils.h" +#include "msg.h" +#include "datetime.h" +#include "ratelimit.h" +#include "queue.h" +#include "lookup.h" +#include "net.h" /* for permittedPeers, may be removed when this is removed */ +#include "statsobj.h" + + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP + +/* static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(tcpsrv) +DEFobjCurrIf(tcps_sess) +DEFobjCurrIf(net) +DEFobjCurrIf(netstrm) +DEFobjCurrIf(datetime) +DEFobjCurrIf(prop) +DEFobjCurrIf(statsobj) + +/* Module static data */ +static tcpsrv_t *pOurTcpsrv = NULL; /* our TCP server(listener) TODO: change for multiple instances */ +static permittedPeers_t *pPermPeersRoot = NULL; +static prop_t *pInputName = NULL; +/* there is only one global inputName for all messages generated by this input */ +static prop_t *pRcvDummy = NULL; +static prop_t *pRcvIPDummy = NULL; + +static int max_empty_checks = 3; /* how often check for queue empty during shutdown? */ + +statsobj_t *diagStats; +STATSCOUNTER_DEF(potentialArtificialDelayMs, mutPotentialArtificialDelayMs) +STATSCOUNTER_DEF(actualArtificialDelayMs, mutActualArtificialDelayMs) +STATSCOUNTER_DEF(delayInvocationCount, mutDelayInvocationCount) + +static sem_t statsReportingBlocker; +static long long statsReportingBlockStartTimeMs = 0; +static int allowOnlyOnce = 0; +DEF_ATOMIC_HELPER_MUT(mutAllowOnlyOnce); +pthread_mutex_t mutStatsReporterWatch; +pthread_cond_t statsReporterWatch; +int statsReported = 0; +static int abortTimeout = -1; /* for timeoutGuard - if set, abort rsyslogd after that many seconds */ +static pthread_t timeoutGuard_thrd; /* thread ID for timeoutGuard thread (if active) */ + +/* config settings */ +struct modConfData_s { + EMPTY_STRUCT; +}; + +static flowControl_t injectmsgDelayMode = eFLOWCTL_NO_DELAY; +static int iTCPSessMax = 20; /* max number of sessions */ +static int iStrmDrvrMode = 0; /* mode for stream driver, driver-dependent (0 mostly means plain tcp) */ +static uchar *pszLstnPortFileName = NULL; +static uchar *pszStrmDrvrAuthMode = NULL; /* authentication mode to use */ +static uchar *pszInputName = NULL; /* value for inputname property, NULL is OK and handled by core engine */ + + +/* callbacks */ +/* this shall go into a specific ACL module! */ +static int +isPermittedHost(struct sockaddr __attribute__((unused)) *addr, char __attribute__((unused)) *fromHostFQDN, + void __attribute__((unused)) *pUsrSrv, void __attribute__((unused)) *pUsrSess) +{ + return 1; /* TODO: implement ACLs ... or via some other way? */ +} + + +static rsRetVal +doOpenLstnSocks(tcpsrv_t *pSrv) +{ + ISOBJ_TYPE_assert(pSrv, tcpsrv); + dbgprintf("in imdiag doOpenLstnSocks\n"); + return tcpsrv.create_tcp_socket(pSrv); +} + + +static rsRetVal +doRcvData(tcps_sess_t *pSess, char *buf, size_t lenBuf, ssize_t *piLenRcvd, int *oserr) +{ + assert(pSess != NULL); + assert(piLenRcvd != NULL); + + *piLenRcvd = lenBuf; + return netstrm.Rcv(pSess->pStrm, (uchar*) buf, piLenRcvd, oserr); +} + +static rsRetVal +onRegularClose(tcps_sess_t *pSess) +{ + DEFiRet; + assert(pSess != NULL); + + /* process any incomplete frames left over */ + tcps_sess.PrepareClose(pSess); + /* Session closed */ + tcps_sess.Close(pSess); + RETiRet; +} + + +static rsRetVal +onErrClose(tcps_sess_t *pSess) +{ + DEFiRet; + assert(pSess != NULL); + + tcps_sess.Close(pSess); + RETiRet; +} + +/* ------------------------------ end callbacks ------------------------------ */ + + +/* get the first word delimited by space from a given string. The pointer is + * advanced to after the word. Any leading spaces are discarded. If the + * output buffer is too small, parsing ends on buffer full condition. + * An empty buffer is returned if there is no more data inside the string. + * rgerhards, 2009-05-27 + */ +#define TO_LOWERCASE 1 +#define NO_MODIFY 0 +static void +getFirstWord(uchar **ppszSrc, uchar *pszBuf, size_t lenBuf, int options) +{ + uchar c; + uchar *pszSrc = *ppszSrc; + + while(*pszSrc && *pszSrc == ' ') + ++pszSrc; /* skip to first non-space */ + + while(*pszSrc && *pszSrc != ' ' && lenBuf > 1) { + c = *pszSrc++; + if(options & TO_LOWERCASE) + c = tolower(c); + *pszBuf++ = c; + lenBuf--; + } + + *pszBuf = '\0'; + *ppszSrc = pszSrc; +} + + +/* send a response back to the originator + * rgerhards, 2009-05-27 + */ +static rsRetVal __attribute__((format(printf, 2, 3))) +sendResponse(tcps_sess_t *pSess, const char *const __restrict__ fmt, ...) +{ + va_list ap; + ssize_t len; + uchar buf[1024]; + DEFiRet; + + va_start(ap, fmt); + len = vsnprintf((char*)buf, sizeof(buf), fmt, ap); + va_end(ap); + CHKiRet(netstrm.Send(pSess->pStrm, buf, &len)); + +finalize_it: + RETiRet; +} + +/* submit a generated numeric-suffix message to the rsyslog core + */ +static rsRetVal +doInjectMsg(uchar *szMsg, ratelimit_t *ratelimiter) +{ + smsg_t *pMsg; + struct syslogTime stTime; + time_t ttGenTime; + DEFiRet; + + datetime.getCurrTime(&stTime, &ttGenTime, TIME_IN_LOCALTIME); + /* we now create our own message object and submit it to the queue */ + CHKiRet(msgConstructWithTime(&pMsg, &stTime, ttGenTime)); + MsgSetRawMsg(pMsg, (char*) szMsg, ustrlen(szMsg)); + MsgSetInputName(pMsg, pInputName); + MsgSetFlowControlType(pMsg, injectmsgDelayMode); + pMsg->msgFlags = NEEDS_PARSING | PARSE_HOSTNAME; + MsgSetRcvFrom(pMsg, pRcvDummy); + CHKiRet(MsgSetRcvFromIP(pMsg, pRcvIPDummy)); + CHKiRet(ratelimitAddMsg(ratelimiter, NULL, pMsg)); + +finalize_it: + RETiRet; +} + +/* submit a generated numeric-suffix message to the rsyslog core + */ +static rsRetVal +doInjectNumericSuffixMsg(int iNum, ratelimit_t *ratelimiter) +{ + uchar szMsg[1024]; + DEFiRet; + snprintf((char*)szMsg, sizeof(szMsg)/sizeof(uchar), + "<167>Mar 1 01:00:00 172.20.245.8 tag msgnum:%8.8d:", iNum); + iRet = doInjectMsg(szMsg, ratelimiter); + RETiRet; +} + +/* This function injects messages. Command format: + * injectmsg <fromnbr> <number-of-messages> + * rgerhards, 2009-05-27 + */ +static rsRetVal +injectMsg(uchar *pszCmd, tcps_sess_t *pSess) +{ + uchar wordBuf[1024]; + int iFrom, nMsgs; + uchar *literalMsg; + int i; + ratelimit_t *ratelimit = NULL; + DEFiRet; + + literalMsg = NULL; + + memset(wordBuf, 0, sizeof(wordBuf)); + CHKiRet(ratelimitNew(&ratelimit, "imdiag", "injectmsg")); + /* we do not check errors here! */ + getFirstWord(&pszCmd, wordBuf, sizeof(wordBuf), TO_LOWERCASE); + if (ustrcmp(UCHAR_CONSTANT("literal"), wordBuf) == 0) { + /* user has provided content for a message */ + ++pszCmd; /* ignore following space */ + CHKiRet(doInjectMsg(pszCmd, ratelimit)); + nMsgs = 1; + } else { /* assume 2 args, (from_idx, count) */ + iFrom = atoi((char*)wordBuf); + getFirstWord(&pszCmd, wordBuf, sizeof(wordBuf), TO_LOWERCASE); + nMsgs = atoi((char*)wordBuf); + for(i = 0 ; i < nMsgs ; ++i) { + CHKiRet(doInjectNumericSuffixMsg(i + iFrom, ratelimit)); + } + } + CHKiRet(sendResponse(pSess, "%d messages injected\n", nMsgs)); + + DBGPRINTF("imdiag: %d messages injected\n", nMsgs); + +finalize_it: + if(ratelimit != NULL) + ratelimitDestruct(ratelimit); + free(literalMsg); + RETiRet; +} + + +/* This function waits until all queues are drained (size = 0) + * To make sure it really is drained, we check multiple times. Otherwise we + * may just see races. Note: it is important to ensure that the size + * is zero multiple times in succession. Otherwise, we may just accidently + * hit a situation where the queue isn't filled for a while (we have seen + * this in practice, see https://github.com/rsyslog/rsyslog/issues/688). + * Note: until 2014--07-13, this checked just the main queue. However, + * the testbench was the sole user and checking all queues makes much more + * sense. So we change function semantics instead of carrying the old + * semantics over and crafting a new function. -- rgerhards + */ +static rsRetVal +waitMainQEmpty(tcps_sess_t *pSess) +{ + int iPrint = 0; + int iPrintVerbosity = 500; // 500 default + int nempty = 0; + static unsigned lastOverallQueueSize = 1; + DEFiRet; + + while(1) { + processImInternal(); + const unsigned OverallQueueSize = PREFER_FETCH_32BIT(iOverallQueueSize); + if(OverallQueueSize == 0) { + ++nempty; + } else { + if(OverallQueueSize > 500) { + /* do a bit of extra sleep to not poll too frequently */ + srSleep(0, (OverallQueueSize > 2000) ? 900000 : 100000); + } + nempty = 0; + } + if(dbgTimeoutToStderr) { /* we abuse this setting a bit ;-) */ + if(OverallQueueSize != lastOverallQueueSize) { + fprintf(stderr, "imdiag: wait q_empty: qsize %d nempty %d\n", + OverallQueueSize, nempty); + lastOverallQueueSize = OverallQueueSize; + } + } + if(nempty > max_empty_checks) + break; + if(iPrint++ % iPrintVerbosity == 0) + DBGPRINTF("imdiag sleeping, wait queues drain, " + "curr size %d, nempty %d\n", + OverallQueueSize, nempty); + srSleep(0,100000);/* wait a little bit */ + } + + CHKiRet(sendResponse(pSess, "mainqueue empty\n")); + DBGPRINTF("imdiag: mainqueue empty\n"); + +finalize_it: + RETiRet; +} + +static rsRetVal +awaitLookupTableReload(tcps_sess_t *pSess) +{ + DEFiRet; + + while(1) { + if(lookupPendingReloadCount() == 0) { + break; + } + srSleep(0,500000); + } + + CHKiRet(sendResponse(pSess, "no pending lookup-table reloads found\n")); + DBGPRINTF("imdiag: no pending lookup-table reloads found\n"); + +finalize_it: + RETiRet; +} + +static rsRetVal +awaitHUPComplete(tcps_sess_t *pSess) +{ + const int max_tries = 10; + const int ms_to_sleep = 50; + const char *return_msg; + int b_saw_HUP = 0; + int tries = max_tries; + unsigned actual_tries = 0; + DEFiRet; + + while(tries > 0) { + ++actual_tries; + if(get_bHadHUP() == 1) { + tries = max_tries; + b_saw_HUP = 1; + } else { + --tries; + } + srSleep(0, ms_to_sleep * 50); + } + + if(b_saw_HUP) { + return_msg = "seen HUP request, looks like it has completed"; + } else { + return_msg = "timeout - looks like_HUP has completed"; + } + CHKiRet(sendResponse(pSess, "%s [%d tries]\n", return_msg, actual_tries)); + DBGPRINTF("imdiag: %s\n", return_msg); + +finalize_it: + RETiRet; +} + +static rsRetVal +enableDebug(tcps_sess_t *pSess) +{ + DEFiRet; + + Debug = DEBUG_FULL; + debugging_on = 1; + dbgprintf("Note: debug turned on via imdiag\n"); + + CHKiRet(sendResponse(pSess, "debug enabled\n")); + +finalize_it: + RETiRet; +} + +static void +imdiag_statsReadCallback(statsobj_t __attribute__((unused)) *const ignore_stats, + void __attribute__((unused)) *const ignore_ctx) +{ + long long waitStartTimeMs = currentTimeMills(); + sem_wait(&statsReportingBlocker); + long delta = currentTimeMills() - waitStartTimeMs; + if ((int)ATOMIC_DEC_AND_FETCH(&allowOnlyOnce, &mutAllowOnlyOnce) < 0) { + sem_post(&statsReportingBlocker); + } else { + LogError(0, RS_RET_OK, "imdiag(stats-read-callback): current stats-reporting " + "cycle will proceed now, next reporting cycle will again be blocked"); + } + + if (pthread_mutex_lock(&mutStatsReporterWatch) == 0) { + statsReported = 1; + pthread_cond_signal(&statsReporterWatch); + pthread_mutex_unlock(&mutStatsReporterWatch); + } + + if (delta > 0) { + STATSCOUNTER_ADD(actualArtificialDelayMs, mutActualArtificialDelayMs, delta); + } +} + +static rsRetVal +blockStatsReporting(tcps_sess_t *pSess) { + DEFiRet; + + sem_wait(&statsReportingBlocker); + CHKiConcCtrl(pthread_mutex_lock(&mutStatsReporterWatch)); + statsReported = 0; + CHKiConcCtrl(pthread_mutex_unlock(&mutStatsReporterWatch)); + ATOMIC_STORE_0_TO_INT(&allowOnlyOnce, &mutAllowOnlyOnce); + statsReportingBlockStartTimeMs = currentTimeMills(); + LogError(0, RS_RET_OK, "imdiag: blocked stats reporting"); + CHKiRet(sendResponse(pSess, "next stats reporting call will be blocked\n")); + +finalize_it: + if (iRet != RS_RET_OK) { + LogError(0, iRet, "imdiag: block-stats-reporting wasn't successful"); + CHKiRet(sendResponse(pSess, "imdiag::error something went wrong\n")); + } + RETiRet; +} + +static rsRetVal +awaitStatsReport(uchar *pszCmd, tcps_sess_t *pSess) { + uchar subCmd[1024]; + int blockAgain = 0; + DEFiRet; + + memset(subCmd, 0, sizeof(subCmd)); + getFirstWord(&pszCmd, subCmd, sizeof(subCmd), TO_LOWERCASE); + blockAgain = (ustrcmp(UCHAR_CONSTANT("block_again"), subCmd) == 0); + if (statsReportingBlockStartTimeMs > 0) { + long delta = currentTimeMills() - statsReportingBlockStartTimeMs; + if (blockAgain) { + ATOMIC_STORE_1_TO_INT(&allowOnlyOnce, &mutAllowOnlyOnce); + LogError(0, RS_RET_OK, "imdiag: un-blocking ONLY the next cycle of stats reporting"); + } else { + statsReportingBlockStartTimeMs = 0; + LogError(0, RS_RET_OK, "imdiag: un-blocking stats reporting"); + } + sem_post(&statsReportingBlocker); + LogError(0, RS_RET_OK, "imdiag: stats reporting unblocked"); + STATSCOUNTER_ADD(potentialArtificialDelayMs, mutPotentialArtificialDelayMs, delta); + STATSCOUNTER_INC(delayInvocationCount, mutDelayInvocationCount); + LogError(0, RS_RET_OK, "imdiag: will now await next reporting cycle"); + CHKiConcCtrl(pthread_mutex_lock(&mutStatsReporterWatch)); + while (! statsReported) { + CHKiConcCtrl(pthread_cond_wait(&statsReporterWatch, &mutStatsReporterWatch)); + } + statsReported = 0; + CHKiConcCtrl(pthread_mutex_unlock(&mutStatsReporterWatch)); + if (blockAgain) { + statsReportingBlockStartTimeMs = currentTimeMills(); + } + LogError(0, RS_RET_OK, "imdiag: stats were reported, wait complete, returning"); + CHKiRet(sendResponse(pSess, "stats reporting was unblocked\n")); + } else { + CHKiRet(sendResponse(pSess, "imdiag::error : stats reporting was not blocked, bug?\n")); + } + +finalize_it: + if (iRet != RS_RET_OK) { + LogError(0, iRet, "imdiag: stats-reporting unblock + await-run wasn't successfully completed"); + CHKiRet(sendResponse(pSess, "imdiag::error something went wrong\n")); + } + RETiRet; +} + +/* Function to handle received messages. This is our core function! + * rgerhards, 2009-05-24 + */ +static rsRetVal ATTR_NONNULL() +OnMsgReceived(tcps_sess_t *const pSess, uchar *const pRcv, const int iLenMsg) +{ + uchar *pszMsg; + uchar *pToFree = NULL; + uchar cmdBuf[1024]; + DEFiRet; + + assert(pSess != NULL); + assert(pRcv != NULL); + + /* NOTE: pRcv is NOT a C-String but rather an array of characters + * WITHOUT a termination \0 char. So we need to convert it to one + * before proceeding. + */ + CHKmalloc(pszMsg = calloc(1, iLenMsg + 1)); + pToFree = pszMsg; + memcpy(pszMsg, pRcv, iLenMsg); + pszMsg[iLenMsg] = '\0'; + + memset(cmdBuf, 0, sizeof(cmdBuf)); /* keep valgrind happy */ + getFirstWord(&pszMsg, cmdBuf, sizeof(cmdBuf), TO_LOWERCASE); + + dbgprintf("imdiag received command '%s'\n", cmdBuf); + if(!ustrcmp(cmdBuf, UCHAR_CONSTANT("getmainmsgqueuesize"))) { + CHKiRet(sendResponse(pSess, "%d\n", iOverallQueueSize)); + DBGPRINTF("imdiag: %d messages in main queue\n", iOverallQueueSize); + } else if(!ustrcmp(cmdBuf, UCHAR_CONSTANT("waitmainqueueempty"))) { + CHKiRet(waitMainQEmpty(pSess)); + } else if(!ustrcmp(cmdBuf, UCHAR_CONSTANT("awaitlookuptablereload"))) { + CHKiRet(awaitLookupTableReload(pSess)); + } else if(!ustrcmp(cmdBuf, UCHAR_CONSTANT("injectmsg"))) { + CHKiRet(injectMsg(pszMsg, pSess)); + } else if(!ustrcmp(cmdBuf, UCHAR_CONSTANT("blockstatsreporting"))) { + CHKiRet(blockStatsReporting(pSess)); + } else if(!ustrcmp(cmdBuf, UCHAR_CONSTANT("awaitstatsreport"))) { + CHKiRet(awaitStatsReport(pszMsg, pSess)); + } else if(!ustrcmp(cmdBuf, UCHAR_CONSTANT("awaithupcomplete"))) { + CHKiRet(awaitHUPComplete(pSess)); + } else if(!ustrcmp(cmdBuf, UCHAR_CONSTANT("enabledebug"))) { + CHKiRet(enableDebug(pSess)); + } else { + dbgprintf("imdiag unkown command '%s'\n", cmdBuf); + CHKiRet(sendResponse(pSess, "unkown command '%s'\n", cmdBuf)); + } + +finalize_it: + free(pToFree); + RETiRet; +} + + +/* set permitted peer -- rgerhards, 2008-05-19 + */ +static rsRetVal +setPermittedPeer(void __attribute__((unused)) *pVal, uchar *pszID) +{ + DEFiRet; + CHKiRet(net.AddPermittedPeer(&pPermPeersRoot, pszID)); + free(pszID); /* no longer needed, but we need to free as of interface def */ +finalize_it: + RETiRet; +} + + +static rsRetVal +setInjectDelayMode(void __attribute__((unused)) *pVal, uchar *const pszMode) +{ + DEFiRet; + + if(!strcasecmp((char*)pszMode, "no")) { + injectmsgDelayMode = eFLOWCTL_NO_DELAY; + } else if(!strcasecmp((char*)pszMode, "light")) { + injectmsgDelayMode = eFLOWCTL_LIGHT_DELAY; + } else if(!strcasecmp((char*)pszMode, "full")) { + injectmsgDelayMode = eFLOWCTL_FULL_DELAY; + } else { + LogError(0, RS_RET_PARAM_ERROR, + "imdiag: invalid imdiagInjectDelayMode '%s' - ignored", pszMode); + } + free(pszMode); + RETiRet; +} + + +static rsRetVal +addTCPListener(void __attribute__((unused)) *pVal, uchar *pNewVal) +{ + tcpLstnParams_t *cnf_params = NULL; + DEFiRet; + + if(pOurTcpsrv != NULL) { + LogError(0, NO_ERRCODE, "imdiag: only a single listener is supported, " + "trying to add a second"); + ABORT_FINALIZE(RS_RET_ERR); + } + CHKmalloc(cnf_params = (tcpLstnParams_t*) calloc(1, sizeof(tcpLstnParams_t))); + CHKiRet(tcpsrv.Construct(&pOurTcpsrv)); + CHKiRet(tcpsrv.SetSessMax(pOurTcpsrv, iTCPSessMax)); + CHKiRet(tcpsrv.SetCBIsPermittedHost(pOurTcpsrv, isPermittedHost)); + CHKiRet(tcpsrv.SetCBRcvData(pOurTcpsrv, doRcvData)); + CHKiRet(tcpsrv.SetCBOpenLstnSocks(pOurTcpsrv, doOpenLstnSocks)); + CHKiRet(tcpsrv.SetCBOnRegularClose(pOurTcpsrv, onRegularClose)); + CHKiRet(tcpsrv.SetCBOnErrClose(pOurTcpsrv, onErrClose)); + CHKiRet(tcpsrv.SetDrvrMode(pOurTcpsrv, iStrmDrvrMode)); + CHKiRet(tcpsrv.SetOnMsgReceive(pOurTcpsrv, OnMsgReceived)); + /* now set optional params, but only if they were actually configured */ + if(pszStrmDrvrAuthMode != NULL) { + CHKiRet(tcpsrv.SetDrvrAuthMode(pOurTcpsrv, pszStrmDrvrAuthMode)); + } + if(pPermPeersRoot != NULL) { + CHKiRet(tcpsrv.SetDrvrPermPeers(pOurTcpsrv, pPermPeersRoot)); + } + + /* initialized, now add socket */ + CHKiRet(tcpsrv.SetInputName(pOurTcpsrv, cnf_params, pszInputName == NULL ? + UCHAR_CONSTANT("imdiag") : pszInputName)); + CHKiRet(tcpsrv.SetOrigin(pOurTcpsrv, (uchar*)"imdiag")); + /* we support octect-counted frame (constant 1 below) */ + cnf_params->pszPort = pNewVal; + cnf_params->bSuppOctetFram = 1; + CHKmalloc(cnf_params->pszLstnPortFileName = (const uchar*) strdup((const char*)pszLstnPortFileName)); + tcpsrv.configureTCPListen(pOurTcpsrv, cnf_params); + cnf_params = NULL; + +finalize_it: + if(iRet != RS_RET_OK) { + LogError(0, NO_ERRCODE, "error %d trying to add listener", iRet); + if(pOurTcpsrv != NULL) + tcpsrv.Destruct(&pOurTcpsrv); + } + free(cnf_params); + RETiRet; +} + + +static void * +timeoutGuard(ATTR_UNUSED void *arg) +{ + assert(abortTimeout != -1); + sigset_t sigSet; + time_t strtTO; + time_t endTO; + + /* block all signals except SIGTTIN and SIGSEGV */ + sigfillset(&sigSet); + sigdelset(&sigSet, SIGSEGV); + pthread_sigmask(SIG_BLOCK, &sigSet, NULL); + + dbgprintf("timeoutGuard: timeout %d seconds, time %lld\n", abortTimeout, (long long) time(NULL)); + + time(&strtTO); + endTO = strtTO + abortTimeout; + + while(1) { + int to = endTO - time(NULL); + dbgprintf("timeoutGuard: sleep timeout %d seconds\n", to); + if(to > 0) { + srSleep(to, 0); + } + if(time(NULL) < endTO) { + dbgprintf("timeoutGuard: spurios wakeup, going back to sleep, time: %lld\n", + (long long) time(NULL)); + } else { + break; + } + } + dbgprintf("timeoutGuard: sleep expired, aborting\n"); + /* note: we use fprintf to stderr intentionally! */ + + fprintf(stderr, "timeoutGuard: rsyslog still active after expiry of guard " + "period (strtTO %lld, endTO %lld, time now %lld, diff %lld), pid %d - initiating abort()\n", + (long long) strtTO, (long long) endTO, (long long) time(NULL), (long long) (time(NULL) - strtTO), + (int) glblGetOurPid()); + fflush(stderr); + abort(); +} + + +static rsRetVal +setAbortTimeout(void __attribute__((unused)) *pVal, int timeout) +{ + DEFiRet; + + if(abortTimeout != -1) { + LogError(0, NO_ERRCODE, "imdiag: abort timeout already set -" + "ignoring 2nd+ request"); + ABORT_FINALIZE(RS_RET_ERR); + } + if(timeout <= 0) { + LogError(0, NO_ERRCODE, "imdiag: $IMDiagAbortTimeout must be greater " + "than 0 - ignored"); + ABORT_FINALIZE(RS_RET_ERR); + } + abortTimeout = timeout; + const int iState = pthread_create(&timeoutGuard_thrd, NULL, timeoutGuard, NULL); + if(iState != 0) { + LogError(iState, NO_ERRCODE, "imdiag: error enabling timeoutGuard thread -" + "not guarding against system hang"); + ABORT_FINALIZE(RS_RET_ERR); + } + +finalize_it: + RETiRet; +} + + +#if 0 /* can be used to integrate into new config system */ +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf +#endif + +/* This function is called to gather input. + */ +BEGINrunInput +CODESTARTrunInput + CHKiRet(tcpsrv.ConstructFinalize(pOurTcpsrv)); + iRet = tcpsrv.Run(pOurTcpsrv); +finalize_it: +ENDrunInput + + +/* initialize and return if will run or not */ +BEGINwillRun +CODESTARTwillRun + /* first apply some config settings */ + if(pOurTcpsrv == NULL) + ABORT_FINALIZE(RS_RET_NO_RUN); + /* we need to create the inputName property (only once during our lifetime) */ + CHKiRet(prop.Construct(&pInputName)); + CHKiRet(prop.SetString(pInputName, UCHAR_CONSTANT("imdiag"), sizeof("imdiag") - 1)); + CHKiRet(prop.ConstructFinalize(pInputName)); + + CHKiRet(prop.Construct(&pRcvDummy)); + CHKiRet(prop.SetString(pRcvDummy, UCHAR_CONSTANT("127.0.0.1"), sizeof("127.0.0.1") - 1)); + CHKiRet(prop.ConstructFinalize(pRcvDummy)); + + CHKiRet(prop.Construct(&pRcvIPDummy)); + CHKiRet(prop.SetString(pRcvIPDummy, UCHAR_CONSTANT("127.0.0.1"), sizeof("127.0.0.1") - 1)); + CHKiRet(prop.ConstructFinalize(pRcvIPDummy)); + +finalize_it: +ENDwillRun + + +BEGINafterRun +CODESTARTafterRun + if(pInputName != NULL) + prop.Destruct(&pInputName); + if(pRcvDummy != NULL) + prop.Destruct(&pRcvDummy); + if(pRcvIPDummy != NULL) + prop.Destruct(&pRcvIPDummy); +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + if(pOurTcpsrv != NULL) + iRet = tcpsrv.Destruct(&pOurTcpsrv); + + if(pPermPeersRoot != NULL) { + net.DestructPermittedPeers(&pPermPeersRoot); + } + + /* free some globals to keep valgrind happy */ + free(pszInputName); + free(pszLstnPortFileName); + free(pszStrmDrvrAuthMode); + + statsobj.Destruct(&diagStats); + sem_destroy(&statsReportingBlocker); + DESTROY_ATOMIC_HELPER_MUT(mutAllowOnlyOnce); + pthread_cond_destroy(&statsReporterWatch); + pthread_mutex_destroy(&mutStatsReporterWatch); + + /* release objects we used */ + objRelease(net, LM_NET_FILENAME); + objRelease(netstrm, LM_NETSTRMS_FILENAME); + objRelease(tcps_sess, LM_TCPSRV_FILENAME); + objRelease(tcpsrv, LM_TCPSRV_FILENAME); + objRelease(datetime, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(statsobj, CORE_COMPONENT); + + /* clean up timeoutGuard if active */ + if(abortTimeout != -1) { + int r = pthread_cancel(timeoutGuard_thrd); + if(r == 0) { + void *dummy; + pthread_join(timeoutGuard_thrd, &dummy); + } + } +ENDmodExit + + +static rsRetVal +resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + iTCPSessMax = 200; + iStrmDrvrMode = 0; + free(pszInputName); + free(pszLstnPortFileName); + pszLstnPortFileName = NULL; + if(pszStrmDrvrAuthMode != NULL) { + free(pszStrmDrvrAuthMode); + pszStrmDrvrAuthMode = NULL; + } + return RS_RET_OK; +} + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + pOurTcpsrv = NULL; + /* request objects we use */ + CHKiRet(objUse(net, LM_NET_FILENAME)); + CHKiRet(objUse(netstrm, LM_NETSTRMS_FILENAME)); + CHKiRet(objUse(tcps_sess, LM_TCPSRV_FILENAME)); + CHKiRet(objUse(tcpsrv, LM_TCPSRV_FILENAME)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + + const char *ci_max_empty_checks = getenv("CI_SHUTDOWN_QUEUE_EMPTY_CHECKS"); + if(ci_max_empty_checks != NULL) { + int n = atoi(ci_max_empty_checks); + if(n > 200) { + LogError(0, RS_RET_PARAM_ERROR, "env var CI_SHUTDOWN_QUEUE_EMPTY_CHECKS has " + "value over 200, which is the maximum - capped to 200"); + n = 200; + } + if(n > 0) { + max_empty_checks = n; + } else { + LogError(0, RS_RET_PARAM_ERROR, "env var CI_SHUTDOWN_QUEUE_EMPTY_CHECKS has " + "value below 1, ignored; using default instead"); + } + fprintf(stderr, "rsyslogd: info: imdiag does %d empty checks due to " + "CI_SHUTDOWN_QUEUE_EMPTY_CHECKS\n", max_empty_checks); + } + + /* register config file handlers */ + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("imdiagaborttimeout"), 0, eCmdHdlrInt, + setAbortTimeout, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("imdiagserverrun"), 0, eCmdHdlrGetWord, + addTCPListener, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("imdiaginjectdelaymode"), 0, eCmdHdlrGetWord, + setInjectDelayMode, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("imdiagmaxsessions"), 0, eCmdHdlrInt, + NULL, &iTCPSessMax, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("imdiagserverstreamdrivermode"), 0, + eCmdHdlrInt, NULL, &iStrmDrvrMode, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("imdiaglistenportfilename"), 0, + eCmdHdlrGetWord, NULL, &pszLstnPortFileName, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("imdiagserverstreamdriverauthmode"), 0, + eCmdHdlrGetWord, NULL, &pszStrmDrvrAuthMode, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("imdiagserverstreamdriverpermittedpeer"), 0, + eCmdHdlrGetWord, setPermittedPeer, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("imdiagserverinputname"), 0, + eCmdHdlrGetWord, NULL, &pszInputName, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("resetconfigvariables"), 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); + + sem_init(&statsReportingBlocker, 0, 1); + INIT_ATOMIC_HELPER_MUT(mutAllowOnlyOnce); + CHKiConcCtrl(pthread_mutex_init(&mutStatsReporterWatch, NULL)); + CHKiConcCtrl(pthread_cond_init(&statsReporterWatch, NULL)); + + CHKiRet(statsobj.Construct(&diagStats)); + CHKiRet(statsobj.SetName(diagStats, UCHAR_CONSTANT("imdiag-stats-reporting-controller"))); + CHKiRet(statsobj.SetOrigin(diagStats, UCHAR_CONSTANT("imdiag"))); + statsobj.SetStatsObjFlags(diagStats, STATSOBJ_FLAG_DO_PREPEND); + STATSCOUNTER_INIT(potentialArtificialDelayMs, mutPotentialArtificialDelayMs); + CHKiRet(statsobj.AddCounter(diagStats, UCHAR_CONSTANT("potentialTotalArtificialDelayInMs"), + ctrType_IntCtr, CTR_FLAG_NONE, &potentialArtificialDelayMs)); + STATSCOUNTER_INIT(actualArtificialDelayMs, mutActualArtificialDelayMs); + CHKiRet(statsobj.AddCounter(diagStats, UCHAR_CONSTANT("actualTotalArtificialDelayInMs"), + ctrType_IntCtr, CTR_FLAG_NONE, &actualArtificialDelayMs)); + STATSCOUNTER_INIT(delayInvocationCount, mutDelayInvocationCount); + CHKiRet(statsobj.AddCounter(diagStats, UCHAR_CONSTANT("delayInvocationCount"), + ctrType_IntCtr, CTR_FLAG_NONE, &delayInvocationCount)); + CHKiRet(statsobj.SetReadNotifier(diagStats, imdiag_statsReadCallback, NULL)); + CHKiRet(statsobj.ConstructFinalize(diagStats)); +ENDmodInit diff --git a/plugins/imdtls/Makefile.am b/plugins/imdtls/Makefile.am new file mode 100644 index 0000000..bf544b3 --- /dev/null +++ b/plugins/imdtls/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = imdtls.la +imdtls_la_DEPENDENCIES = ../../runtime/lmnsd_ossl.la +imdtls_la_SOURCES = imdtls.c +imdtls_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) $(OPENSSL_CFLAGS) +imdtls_la_LDFLAGS = -module -avoid-version +imdtls_la_LIBADD = $(OPENSSL_LIBS) ../../runtime/lmnsd_ossl.la diff --git a/plugins/imdtls/Makefile.in b/plugins/imdtls/Makefile.in new file mode 100644 index 0000000..03043f4 --- /dev/null +++ b/plugins/imdtls/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +am__is_gnu_make = { \ + if test -z '$(MAKELEVEL)'; then \ + false; \ + elif test -n '$(MAKE_HOST)'; then \ + true; \ + elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \ + true; \ + else \ + false; \ + fi; \ +} +am__make_running_with_option = \ + case $${target_option-} in \ + ?) ;; \ + *) echo "am__make_running_with_option: internal error: invalid" \ + "target option '$${target_option-}' specified" >&2; \ + exit 1;; \ + esac; \ + has_opt=no; \ + sane_makeflags=$$MAKEFLAGS; \ + if $(am__is_gnu_make); then \ + sane_makeflags=$$MFLAGS; \ + else \ + case $$MAKEFLAGS in \ + *\\[\ \ ]*) \ + bs=\\; 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with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" + +#include <stdio.h> +#include <arpa/inet.h> +#include <fcntl.h> +#include <unistd.h> +#include <sys/errno.h> +#include <poll.h> +#include <assert.h> +#include <time.h> + +// --- Include openssl headers as well +#include <openssl/ssl.h> +#include <openssl/x509v3.h> +#include <openssl/err.h> +#if OPENSSL_VERSION_NUMBER >= 0x30000000L && !defined(LIBRESSL_VERSION_NUMBER) +# include <openssl/bioerr.h> +#endif +#include <openssl/engine.h> +// --- + +#include "rsyslog.h" +#include "dirty.h" +#include "module-template.h" +#include "cfsysline.h" +#include "msg.h" +#include "errmsg.h" +#include "glbl.h" +#include "srUtils.h" +#include "msg.h" +#include "parser.h" +#include "datetime.h" +#include "net.h" +#include "net_ossl.h" +#include "prop.h" +#include "ruleset.h" +#include "statsobj.h" +#include "unicode-helper.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imdtls") + +/* defines */ +#define MAX_DTLS_CLIENTS 1024 +#define MAX_DTLS_MSGSIZE 65536 +#define DTLS_LISTEN_PORT "4433" +// 1800 seconds = 30 minutes +#define DTLS_DEFAULT_TIMEOUT 1800 + +/* Module static data */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(datetime) +DEFobjCurrIf(prop) +DEFobjCurrIf(ruleset) +DEFobjCurrIf(statsobj) +DEFobjCurrIf(net) +DEFobjCurrIf(net_ossl) + +#define DTLS_MAX_RCVBUF 8192 /* Maximum DTLS packet is 8192 bytes which fits into Jumbo Frames. If not enabled + * message fragmentation (Ethernet MTU of ~ 1500 bytes) can occur.*/ + +/* config settings */ +typedef struct configSettings_s { + uchar *pszBindRuleset; /* name of Ruleset to bind to */ +} configSettings_t; +static configSettings_t cs; + +struct dtlsClient_s { + SSL* sslClient; /* DTSL (SSL) Client */ + time_t lastActivityTime; /* Last Activity Time */ + int clientfd; /* ClientFD */ +}; + +// Use typedef to define a type 'dtlsClient_t' based on 'struct dtlsClient_s' +typedef struct dtlsClient_s dtlsClient_t; + +struct instanceConf_s { + /* Network properties */ + uchar *pszBindAddr; /* Listening IP Address */ + uchar *pszBindPort; /* Port to bind socket to */ + int timeout; /* Default timeout for DTLS Sessions */ + /* Common properties */ + uchar *pszBindRuleset; /* name of ruleset to bind to */ + uchar *pszInputName; + prop_t *pInputName; /* InputName in property format for fast access */ + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + sbool bEnableLstn; /* flag to permit disabling of listener in error case */ + statsobj_t *stats; /* listener stats */ + STATSCOUNTER_DEF(ctrSubmit, mutCtrSubmit) + /* OpenSSL properties */ + uchar *tlscfgcmd; /* OpenSSL Config Command used to override any OpenSSL Settings */ + permittedPeers_t *pPermPeersRoot; /* permitted peers */ + int CertVerifyDepth; /* Verify Depth for certificate chains */ + /* Instance Variables */ + char *pszRcvBuf; + int lenRcvBuf; + /**< -1: empty, 0: connection closed, 1..NSD_OSSL_MAX_RCVBUF-1: data of that size present */ + int ptrRcvBuf; /**< offset for next recv operation if 0 < lenRcvBuf < NSD_OSSL_MAX_RCVBUF */ + + /* OpenSSL and Config Cert vars inside net_ossl_t now */ + net_ossl_t *pNetOssl; /* OSSL shared Config and object vars are here */ + int nClients; /* */ + dtlsClient_t **dtlsClients; /* Array of DTSL (SSL) Clients */ + int sockfd; /* UDP Socket used to bind to */ + struct sockaddr_in server_addr; /* Server Sockaddr */ + int port; /* Server Port as integer */ + + int id; /* Thread ID */ + thrdInfo_t *pThrd; /* Thread Instance Info */ + pthread_t tid; /* the instances thread ID */ + + struct instanceConf_s *next; + struct instanceConf_s *prev; +}; + +/* config variables */ +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + instanceConf_t *root, *tail; + uchar *pszBindRuleset; /* default name of Ruleset to bind to */ + AuthMode drvrAuthMode; /* authenticate peer if no other name given */ +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */ + +static prop_t *pInputName = NULL; + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "ruleset", eCmdHdlrGetWord, 0 }, + { "tls.authmode", eCmdHdlrString, 0 }, +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "port", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "address", eCmdHdlrString, 0 }, + { "timeout", eCmdHdlrPositiveInt, 0 }, + { "name", eCmdHdlrString, 0 }, + { "ruleset", eCmdHdlrString, 0 }, + { "tls.permittedpeer", eCmdHdlrArray, 0 }, + { "tls.authmode", eCmdHdlrString, 0 }, + { "tls.cacert", eCmdHdlrString, 0 }, + { "tls.mycert", eCmdHdlrString, 0 }, + { "tls.myprivkey", eCmdHdlrString, 0 }, + { "tls.tlscfgcmd", eCmdHdlrString, 0 } +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; +#include "im-helper.h" /* must be included AFTER the type definitions! */ + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->next = NULL; + + inst->pszBindAddr = NULL; + inst->pszBindPort = NULL; + inst->timeout = 1800; + inst->pszBindRuleset = loadModConf->pszBindRuleset; + inst->pszInputName = NULL; + inst->pBindRuleset = NULL; + inst->bEnableLstn = 0; + + inst->tlscfgcmd = NULL; + inst->pPermPeersRoot = NULL; + inst->CertVerifyDepth = 2; + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = inst; + } else { + loadModConf->tail->next = inst; + loadModConf->tail = inst; + } + + // Construct pNetOssl helper + CHKiRet(net_ossl.Construct(&inst->pNetOssl)); + inst->pNetOssl->authMode = loadModConf->drvrAuthMode; + + *pinst = inst; +finalize_it: + RETiRet; +} + + +/* function to generate an error message if the ruleset cannot be found */ +static inline void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + LogError(0, NO_ERRCODE, "imdtls[%s]: ruleset '%s' not found - " + "using default ruleset instead", + inst->pszBindPort, inst->pszBindRuleset); +} + +static void +DTLSCloseSocket(instanceConf_t *inst) { + DBGPRINTF("imdtls: DTLSCloseSocket for %s:%d\n", inst->pszBindAddr, inst->port); + // Close UDP Socket + close(inst->sockfd); + inst->sockfd = 0; +} + +static rsRetVal +DTLSCreateSocket(instanceConf_t *inst) { + DEFiRet; + int optval = 1; + int flags; + + struct in_addr ip_struct; + DBGPRINTF("imdtls: DTLSCreateSocket for %s:%d\n", inst->pszBindAddr, inst->port); + + // Create UDP Socket + inst->sockfd = socket(AF_INET, SOCK_DGRAM, 0); + if (inst->sockfd < 0) { + LogError(0, NO_ERRCODE, "imdtls: Unable to create DTLS listener," + " failed to create socket, " + " ignoring port %d bind-address %s.", + inst->port, inst->pszBindAddr); + ABORT_FINALIZE(RS_RET_ERR); + } + setsockopt(inst->sockfd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)); + setsockopt(inst->sockfd, SOL_SOCKET, SO_REUSEPORT, &optval, sizeof(optval)); + + // Set NON Blcoking Flags + flags = fcntl(inst->sockfd, F_GETFL, 0); + fcntl(inst->sockfd, F_SETFL, flags | O_NONBLOCK); + + // Convert IP Address into numeric + if (inet_pton(AF_INET, (char*) inst->pszBindAddr, &ip_struct) <= 0) { + LogError(0, NO_ERRCODE, "imdtls: Unable to create DTLS listener," + " invalid Bind Address, " + " ignoring port %d bind-address %s.", + inst->port, inst->pszBindAddr); + ABORT_FINALIZE(RS_RET_ERR); + } + + // Set Server Address + memset(&inst->server_addr, 0, sizeof(struct sockaddr_in)); + inst->server_addr.sin_family = AF_INET; + inst->server_addr.sin_port = htons(inst->port); + inst->server_addr.sin_addr.s_addr = htonl(ip_struct.s_addr); + + // Bind UDP Socket + if (bind(inst->sockfd, (struct sockaddr*)&inst->server_addr, sizeof(struct sockaddr_in)) < 0) { + LogError(0, NO_ERRCODE, "imdtls: Unable to create DTLS listener," + " unable to bind, " + " ignoring port %d bind-address %s.", + inst->port, inst->pszBindAddr); + ABORT_FINALIZE(RS_RET_ERR); + } +finalize_it: + RETiRet; +} + +/* Verify Callback for X509 Certificate validation. Force visibility as this function is not called anywhere but +* only used as callback! +*/ +static int +imdtls_verify_callback(int status, SSL* ssl) +{ + DEFiRet; + X509 *certpeer; + instanceConf_t *inst = NULL; + + dbgprintf("imdtls_verify_callback: get SSL [%p]\n", (void *)ssl); + inst = (instanceConf_t*) SSL_get_ex_data(ssl, 2); + + /* Continue check if certificate verify was valid */ + if (status == 1) { + if ( ssl != NULL && + inst != NULL) { + /* call the actual function based on current auth mode */ + switch(inst->pNetOssl->authMode) { + case OSSL_AUTH_CERTNAME: + /* if we check the name, we must ensure the cert is valid */ + certpeer = net_ossl_getpeercert(inst->pNetOssl, ssl, NULL); + dbgprintf("imdtls_verify_callback: Check peer certname[%p]=%s\n", + (void *)ssl, (certpeer != NULL ? "VALID" : "NULL")); + CHKiRet(net_ossl_chkpeercertvalidity(inst->pNetOssl, ssl, NULL)); + CHKiRet(net_ossl_chkpeername(inst->pNetOssl, certpeer, NULL)); + break; + case OSSL_AUTH_CERTFINGERPRINT: + certpeer = net_ossl_getpeercert(inst->pNetOssl, ssl, NULL); + dbgprintf("imdtls_verify_callback: Check peer fingerprint[%p]=%s\n", + (void *)ssl, (certpeer != NULL ? "VALID" : "NULL")); + CHKiRet(net_ossl_chkpeercertvalidity(inst->pNetOssl, ssl, NULL)); + CHKiRet(net_ossl_peerfingerprint(inst->pNetOssl, certpeer, NULL)); + break; + case OSSL_AUTH_CERTVALID: + certpeer = net_ossl_getpeercert(inst->pNetOssl, ssl, NULL); + dbgprintf("imdtls_verify_callback: Check peer valid[%p]=%s\n", + (void *)ssl, (certpeer != NULL ? "VALID" : "NULL")); + CHKiRet(net_ossl_chkpeercertvalidity(inst->pNetOssl, ssl, NULL)); + break; + case OSSL_AUTH_CERTANON: + dbgprintf("imdtls_verify_callback: ANON[%p]\n", (void *)ssl); + FINALIZE; + break; + } + } else { + LogMsg(0, RS_RET_NO_ERRCODE, LOG_WARNING, "imdtls_verify_callback: MISSING ssl or inst!"); + } + } +finalize_it: + if(iRet != RS_RET_OK) { + DBGPRINTF("imdtls_verify_callback: FAILED\n"); + status = 0; + } + return status; +} + + +static rsRetVal +addListner(modConfData_t __attribute__((unused)) *modConf, instanceConf_t *inst) +{ + uchar statname[64]; + DEFiRet; + DBGPRINTF("imdtls: addListner ENTER\n"); + + if(!inst->bEnableLstn) { + DBGPRINTF("imdtls: DTLS Listener not started because it is disabled by config error\n"); + FINALIZE; + } + + inst->pszInputName = ustrdup((inst->pszInputName == NULL) ? UCHAR_CONSTANT("imdtls") : inst->pszInputName); + CHKiRet(prop.Construct(&inst->pInputName)); + CHKiRet(prop.SetString(inst->pInputName, inst->pszInputName, ustrlen(inst->pszInputName))); + CHKiRet(prop.ConstructFinalize(inst->pInputName)); + + /* Init defaults */ + if (inst->pszBindPort == NULL) { + CHKmalloc(inst->pszBindPort = ustrdup((uchar*) DTLS_LISTEN_PORT)); + } + + /* Init SSL Handles! */ + CHKmalloc(inst->dtlsClients = (dtlsClient_t**) calloc(MAX_DTLS_CLIENTS, sizeof(dtlsClient_t*))); + for (int i = 0; i < MAX_DTLS_CLIENTS; ++i) { + CHKmalloc(inst->dtlsClients[i] = (dtlsClient_t*) calloc(1, sizeof(dtlsClient_t))); + } + inst->nClients = 0; + + /* support statistics gathering */ + CHKiRet(statsobj.Construct(&(inst->stats))); + snprintf((char*)statname, sizeof(statname), "%s(%s)", + inst->pszInputName, inst->pszBindPort); + statname[sizeof(statname)-1] = '\0'; /* just to be on the save side... */ + CHKiRet(statsobj.SetName(inst->stats, statname)); + CHKiRet(statsobj.SetOrigin(inst->stats, (uchar*)"imdtls")); + STATSCOUNTER_INIT(inst->ctrSubmit, inst->mutCtrSubmit); + CHKiRet(statsobj.AddCounter(inst->stats, UCHAR_CONSTANT("submitted"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(inst->ctrSubmit))); + CHKiRet(statsobj.ConstructFinalize(inst->stats)); + /* end stats counters */ + + // Init OpenSSL Context with DTLS_server_method + CHKiRet(net_ossl.osslCtxInit(inst->pNetOssl, DTLS_method())); + +# if OPENSSL_VERSION_NUMBER >= 0x10002000L + // Init OpenSSL Cookie Callbacks + CHKiRet(net_ossl.osslCtxInitCookie(inst->pNetOssl)); +# endif + // Run openssl config commands in Context + CHKiRet(net_ossl_apply_tlscgfcmd(inst->pNetOssl, inst->tlscfgcmd)); + + // Init Socket + CHKiRet(DTLSCreateSocket(inst)); +finalize_it: + if(iRet != RS_RET_OK) { + LogError(0, NO_ERRCODE, "DTLS Listener for thread failed to create UDP socket " + "for thread %s is not functional!", inst->pszInputName); + } else { + DBGPRINTF("imdtls: DTLS Listener for thread %s added\n", inst->pszInputName); + } + RETiRet; +} + +static rsRetVal +processMsg(instanceConf_t *inst, dtlsClient_t *dtlsClient, char *msg, size_t lenMsg) +{ + DEFiRet; + smsg_t *pMsg = NULL; + prop_t *pProp = NULL; + BIO *wbio; + BIO_ADDR *peer_addr; + + /* Get Gentime */ + time_t ttGenTime = 0; + struct syslogTime stTime; + datetime.getCurrTime(&stTime, &ttGenTime, TIME_IN_LOCALTIME); + + /* we now create our own message object and submit it to the queue */ + CHKiRet(msgConstructWithTime(&pMsg, &stTime, ttGenTime)); + MsgSetRawMsg(pMsg, msg, lenMsg); + MsgSetInputName(pMsg, inst->pInputName); + MsgSetRuleset(pMsg, inst->pBindRuleset); + MsgSetFlowControlType(pMsg, eFLOWCTL_NO_DELAY); + pMsg->msgFlags = NEEDS_PARSING | PARSE_HOSTNAME; + + // Obtain Sender from BIO + wbio = SSL_get_wbio(dtlsClient->sslClient); + peer_addr = BIO_ADDR_new(); + if (BIO_dgram_get_peer(wbio, peer_addr)) { + char *pHostname = BIO_ADDR_hostname_string(peer_addr, 1); + DBGPRINTF("imdtls: processMsg Received message from %s: %s\n", pHostname, msg); + MsgSetRcvFromStr(pMsg, (uchar *)pHostname, strlen(pHostname), &pProp); + CHKiRet(prop.Destruct(&pProp)); + OPENSSL_free(pHostname); + } else { + DBGPRINTF("imdtls: processMsg Received message from UNKNOWN: %s\n", msg); + } + BIO_ADDR_free(peer_addr); + + // Update Activity + dtlsClient->lastActivityTime = time(NULL); + + // Submit Message + CHKiRet(submitMsg2(pMsg)); + STATSCOUNTER_INC(inst->ctrSubmit, inst->mutCtrSubmit); +finalize_it: + RETiRet; +} + +static void +DTLScleanupSession(instanceConf_t *inst, int idx) { + if (inst->dtlsClients[idx]->sslClient != NULL) { + BIO *rbio = SSL_get_rbio(inst->dtlsClients[idx]->sslClient); + if (rbio) { + // Close socket FIRST! + int clientfd = -1; + BIO_get_fd(rbio, &clientfd); + if (clientfd != -1) { + close(clientfd); + } + } + SSL_free(inst->dtlsClients[idx]->sslClient); + DBGPRINTF("imdtls: DTLScleanupSession Socket/SSL for Client idx (%d) terminated.\n", idx); + } + inst->dtlsClients[idx]->sslClient = NULL; + inst->dtlsClients[idx]->lastActivityTime = 0; +} + +static void +DTLSAcceptSession(instanceConf_t *inst, int idx) { + int ret, err; + SSL* ssl = inst->dtlsClients[idx]->sslClient; + DBGPRINTF("imdtls: DTLSAcceptSession for Client idx (%d).\n", idx); + + // Check if the handshake has already been completed + ret = SSL_get_state(ssl); + if (ret != TLS_ST_OK) { + // Existing client Finish handshake + ret = SSL_accept(ssl); + if (ret <= 0) { + err = SSL_get_error(ssl, ret); + if (err == SSL_ERROR_WANT_READ || err == SSL_ERROR_WANT_WRITE) { + // Non-blocking operation did not complete; retry later + DBGPRINTF("imdtls: SSL_accept didn't complete (%d). Will retry.\n", err); + } else if(err == SSL_ERROR_SYSCALL) { + DBGPRINTF("imdtls: SSL_accept failed SSL_ERROR_SYSCALL idx (%d), removing client.\n", + idx); + net_ossl_lastOpenSSLErrorMsg(NULL, err, ssl, LOG_WARNING, + "DTLSHandleSessions", "SSL_accept"); + DTLScleanupSession(inst, idx); + } else { + // An actual error occurred + DBGPRINTF("imdtls: SSL_accept failed (%d) idx (%d), removing client.\n", err, idx); + net_ossl_lastOpenSSLErrorMsg(NULL, err, ssl, LOG_ERR, + "DTLSHandleSessions", "SSL_accept"); + DTLScleanupSession(inst, idx); + } + } else { + DBGPRINTF("imdtls: SSL_accept success idx (%d), adding client.\n", idx); + inst->dtlsClients[idx]->lastActivityTime = time(NULL); + + int status = 1; + status = imdtls_verify_callback(status, ssl); + if (status == 0) { + LogMsg(0, RS_RET_NO_ERRCODE, LOG_WARNING, + "imdtls: Cert Verify FAILED for DTLS client idx (%d)",idx); + } else { + DBGPRINTF("imdtls: Cert Verify SUCCESS for DTLS client idx (%d)\n", idx); + } + } + } else { + DBGPRINTF("imdtls: SSL_get_state for DTLS client idx (%d) is %d\n", idx, ret); + } +} + +static void +DTLSTerminateClients(instanceConf_t *inst) { + // Process pending Client Data first! + for (int i = 0; i < MAX_DTLS_CLIENTS; ++i) { + if (inst->dtlsClients[i]->sslClient != NULL) { + DTLScleanupSession(inst, i); + } + } +} + +static void +DTLSReadClient(instanceConf_t *inst, int idx, short revents) { + int err; + SSL* ssl = inst->dtlsClients[idx]->sslClient; + DBGPRINTF("imdtls: DEBUG Check Client activity on index %d.\n", idx); + if (revents & POLLIN) { + if (ssl == NULL) { + DBGPRINTF("imdtls: DTLSHandleSessions MISSING SSL OBJ for index %d.\n", idx); + return; + } + DBGPRINTF("imdtls: Read Client activity on index %d.\n", idx); + char buf[MAX_DTLS_MSGSIZE]; + int len = 0; + do { + len = SSL_read(ssl, buf, sizeof(buf) - 1); + if (len > 0) { + buf[len] = '\0'; + processMsg(inst, inst->dtlsClients[idx], buf, len); + } else { + err = SSL_get_error(ssl, len); + if (err == SSL_ERROR_WANT_READ) { + DBGPRINTF("imdtls: SSL_ERROR_WANT_READ flush rbio on index %d.\n", idx); + BIO *rbio = SSL_get_rbio(ssl); + BIO_flush(rbio); + } else if (err == SSL_ERROR_WANT_WRITE) { + DBGPRINTF("imdtls: SSL_ERROR_WANT_WRITE flush wbio on index %d.\n", idx); + BIO *wbio = SSL_get_wbio(ssl); + BIO_flush(wbio); + } else if (err == SSL_ERROR_ZERO_RETURN) { + DBGPRINTF("imdtls: SSL_ERROR_ZERO_RETURN on index %d.\n", idx); + break; + } else if (err == SSL_ERROR_SYSCALL) { + DBGPRINTF("imdtls: SSL_ERROR_SYSCALL on index %d ERRNO %d\n", idx, errno); + net_ossl_lastOpenSSLErrorMsg(NULL, err, ssl, LOG_ERR, + "DTLSReadClient", "SSL_read"); + DTLScleanupSession(inst, idx); + break; + } else { + DBGPRINTF("imdtls: SSL_read error %d (%d) on idx %d, rem client.\n", + err, errno, idx); + DTLScleanupSession(inst, idx); + // Exit the loop if any error occurs + break; + } + } + } while (len > 0); + } +} + +static void +DTLSHandleSessions(instanceConf_t *inst) { + int fdToIndex[MAX_DTLS_CLIENTS + 1]; + struct pollfd fds[MAX_DTLS_CLIENTS + 1]; + int optval = 1; + int fdcount = 0; + int ret, err; + memset(fdToIndex, 0, sizeof(fdToIndex)); + memset(fds, 0, sizeof(fds)); + fds[0].fd = inst->sockfd; + fds[0].events = POLLIN; + DBGPRINTF("imdtls: DTLSHandleSessions ENTER \n"); + + // Create FDS Array for Polling sockets + for (int i = 0; i < MAX_DTLS_CLIENTS; ++i) { + if (inst->dtlsClients[i]->sslClient != NULL) { + int clientfd = -1; + fdcount++; + BIO_get_fd(SSL_get_wbio(inst->dtlsClients[i]->sslClient), &clientfd); + DBGPRINTF("imdtls: DTLSHandleSessions handle client %d (%d)\n", fdcount, clientfd); + fds[fdcount].fd = clientfd; + fds[fdcount].events = POLLIN; + fdToIndex[clientfd] = i; // Map fd to dtlsClients index + } + } + + DBGPRINTF("imdtls: Waiting for poll (clients %d) ...\n", fdcount); + ret = poll(fds, fdcount+1, -1); + if(glbl.GetGlobalInputTermState() == 1) { + DBGPRINTF("imdtls: DTLSHandleSessions Terminate State\n"); + return; /* terminate input! */ + } + if (ret < 0) { + DBGPRINTF("imdtls: DTLSHandleSessions ERROR poll failed %d with err %d\n", ret , errno); + return; + } + + // Process pending Client Data first! + DBGPRINTF("imdtls: DTLSHandleSessions handle client sockets (%d) \n", fdcount); + for (int i = 1; i <= fdcount; ++i) { + DTLSReadClient(inst, fdToIndex[fds[i].fd], fds[i].revents); + } + + // Check session timeouts + for (int i = 0; i < MAX_DTLS_CLIENTS; ++i) { + if (inst->dtlsClients[i]->sslClient != NULL) { + if (difftime(time(NULL), inst->dtlsClients[i]->lastActivityTime) > inst->timeout) { + DBGPRINTF("imdtls: Session timeout (%d) for client index %d.\n", i, inst->timeout); + DTLScleanupSession(inst, i); + continue; + } + } + } + + // Check MAIN socket for new connections + if (fds[0].revents & POLLIN) { + DBGPRINTF("imdtls: DTLSHandleSessions handle main socket\n"); + + // Create BIO Object for potential new client + BIO *sbio = BIO_new_dgram(inst->sockfd, BIO_NOCLOSE); + BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL); + + // Create SSL Object for new client and apply default callbacks + SSL *ssl = SSL_new(inst->pNetOssl->ctx); + SSL_set_bio(ssl, sbio, sbio); + SSL_set_accept_state(ssl); + if (inst->pNetOssl->authMode != OSSL_AUTH_CERTANON) { + dbgprintf("imdtls: enable certificate checking (Mode=%d, VerifyDepth=%d)\n", + inst->pNetOssl->authMode, inst->CertVerifyDepth); + net_ossl_set_ssl_verify_callback(ssl, + SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT); + if (inst->CertVerifyDepth != 0) { + SSL_set_verify_depth(ssl, inst->CertVerifyDepth); + } + } + + // Store reference in SSL obj + SSL_set_ex_data(ssl, 0, NULL); /* Reserved for pTcp */ + SSL_set_ex_data(ssl, 1, NULL); /* Reserved for permitExpiredCerts */ + SSL_set_ex_data(ssl, 2, inst); /* Used in imdtls */ + + // Debug Callback for conn sbio! + net_ossl_set_bio_callback(sbio); + + // Connect the new Client + BIO_ADDR *client_addr = BIO_ADDR_new(); + + // Start DTLS Listen and Session + do { + ret = DTLSv1_listen(ssl, client_addr); + if (ret > 0) { + dbgprintf("imdtls: DTLSHandleSessions DTLSv1_listen SUCCESS\n"); + // Create new CLIENT socket for communication! + int clientfd = socket(BIO_ADDR_family(client_addr), SOCK_DGRAM, 0); + if (clientfd < 0) { + LogError(0, NO_ERRCODE, "imdtls: DTLSHandleSessions unable to create" + " client socket"); + return; + } + setsockopt(clientfd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)); + setsockopt(clientfd, SOL_SOCKET, SO_REUSEPORT, &optval, sizeof(optval)); + // Bind and Connect Client Socket + if (bind(clientfd, + (struct sockaddr*) &inst->server_addr, sizeof(struct sockaddr_in)) < 0) { + LogError(0, NO_ERRCODE, "imdtls: DTLSHandleSessions unable to bind" + " client socket" + " ignoring port %d bind-address %s.", + inst->port, inst->pszBindAddr); + return; + } + // Set new fd and set BIO to connected + BIO *rbio = SSL_get_rbio(ssl); + BIO_set_fd(rbio, clientfd, BIO_NOCLOSE); + + // Set and activate timeouts + struct timeval timeout; + timeout.tv_sec = inst->timeout; + timeout.tv_usec = 0; + BIO_ctrl(rbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout); + + // Set BIO to connected + ret = BIO_connect(clientfd, client_addr, 0); + if (ret == 0) { + err = SSL_get_error(ssl, ret); + DBGPRINTF("imdtls: DTLSHandleSessions BIO_connect ERROR %d\n", err); + net_ossl_lastOpenSSLErrorMsg(NULL, err, ssl, LOG_WARNING, + "DTLSHandleSessions", "BIO_connect"); + LogMsg(0, RS_RET_NO_ERRCODE, LOG_WARNING, + "imdtls: BIO_connect failed for DTLS client"); + SSL_free(ssl); + } else { + BIO_ctrl_set_connected(rbio, client_addr); + DBGPRINTF("imdtls: BIO_connect succeeded.\n"); + + // Add to DTLS Clients + for (int i = 0; i < MAX_DTLS_CLIENTS; ++i) { + if (inst->dtlsClients[i]->sslClient == NULL) { + inst->dtlsClients[i]->sslClient = ssl; + inst->dtlsClients[i]->lastActivityTime = time(NULL); + DBGPRINTF("imdtls: New Client added at idx %d.\n", i); + DTLSAcceptSession(inst, i); + break; + } + } + } + break; + } else { + err = SSL_get_error(ssl, ret); + if ( (ret == 0 && err == SSL_ERROR_SYSCALL) || + (err == SSL_ERROR_SYSCALL && errno == EAGAIN)) { + DBGPRINTF("imdtls: DTLSv1_listen RET %d (ERR %d / ERRNO %d), retry\n", + ret, err, errno); + // Wait little and retry DTLSv1_listen + srSleep(0, 100000); + continue; + } else { + DBGPRINTF("imdtls: DTLSv1_listen RET %d (ERR %d / ERRNO %d), abort\n", + ret, err, errno); + net_ossl_lastOpenSSLErrorMsg(NULL, err, ssl, LOG_WARNING, + "DTLSHandleSessions", "DTLSv1_listen"); + LogMsg(0, RS_RET_NO_ERRCODE, LOG_WARNING, + "imdtls: DTLSv1_listen failed for DTLS client"); + SSL_free(ssl); + break; + } + } + } + while (1); + BIO_ADDR_free(client_addr); + } +} + +static void* +startDtlsHandler(void *myself) { + instanceConf_t *inst = (instanceConf_t *) myself; + DBGPRINTF("imdtls: start DtlsHandler for thread %s\n", inst->pszInputName); + + /* DTLS Receiving Loop */ + while(glbl.GetGlobalInputTermState() == 0) { + DBGPRINTF("imdtls: begin handle DTSL Client Sessions\n"); + DTLSHandleSessions(inst); + } + + /* DTLS Terminate Sessions */ + DBGPRINTF("imdtls: Terminate DTLS Client Sessions\n"); + DTLSTerminateClients(inst); + + DBGPRINTF("imdtls: stop DtlsHandler for thread %s\n", inst->pszInputName); + return NULL; +} + +/* Set permitted peers. It is depending on the auth mode if this are + * fingerprints or names. -- rgerhards, 2008-05-19 + */ +static rsRetVal +SetPermPeers(instanceConf_t *inst, permittedPeers_t *pPermPeers) +{ + DEFiRet; + if(pPermPeers == NULL) + FINALIZE; + + if(inst->pNetOssl->authMode != OSSL_AUTH_CERTFINGERPRINT && inst->pNetOssl->authMode != OSSL_AUTH_CERTNAME) { + LogError(0, RS_RET_VALUE_NOT_IN_THIS_MODE, "authentication not supported by " + "imdtls in the configured authentication mode - ignored"); + ABORT_FINALIZE(RS_RET_VALUE_NOT_IN_THIS_MODE); + } + inst->pNetOssl->pPermPeers = pPermPeers; +finalize_it: + RETiRet; +} +BEGINnewInpInst + struct cnfparamvals *pvals; + instanceConf_t *inst = NULL; + int i,j; + FILE *fp; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imdtls)\n"); + + if((pvals = nvlstGetParams(lst, &inppblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("input param blk in imdtls:\n"); + cnfparamsPrint(&inppblk, pvals); + } + + CHKiRet(createInstance(&inst)); + + for(i = 0 ; i < inppblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(inppblk.descr[i].name, "port")) { + inst->pszBindPort = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "address")) { + inst->pszBindAddr = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "timeout")) { + inst->timeout = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "name")) { + inst->pszInputName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "tls.authmode")) { + char* pszAuthMode = es_str2cstr(pvals[i].val.d.estr, NULL); + if(!strcasecmp(pszAuthMode, "fingerprint")) + inst->pNetOssl->authMode = OSSL_AUTH_CERTFINGERPRINT; + else if(!strcasecmp(pszAuthMode, "name")) + inst->pNetOssl->authMode = OSSL_AUTH_CERTNAME; + else if(!strcasecmp(pszAuthMode, "certvalid")) + inst->pNetOssl->authMode = OSSL_AUTH_CERTVALID; + else + inst->pNetOssl->authMode = OSSL_AUTH_CERTANON; + free(pszAuthMode); + } else if(!strcmp(inppblk.descr[i].name, "tls.cacert")) { + inst->pNetOssl->pszCAFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)inst->pNetOssl->pszCAFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + inst->pNetOssl->pszCAFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(inppblk.descr[i].name, "tls.mycert")) { + inst->pNetOssl->pszCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)inst->pNetOssl->pszCertFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + inst->pNetOssl->pszCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(inppblk.descr[i].name, "tls.myprivkey")) { + inst->pNetOssl->pszKeyFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)inst->pNetOssl->pszKeyFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + inst->pNetOssl->pszKeyFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(inppblk.descr[i].name, "tls.tlscfgcmd")) { + inst->tlscfgcmd = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "tls.permittedpeer")) { + for(j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + uchar *const peer = (uchar*) es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + CHKiRet(net.AddPermittedPeer(&inst->pPermPeersRoot, peer)); + free(peer); + } + } else { + dbgprintf("imdtls: program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + } + + /* check if no port is set. If not, we use DEFAULT of 4433 */ + if(inst->pszBindPort == NULL) { + CHKmalloc(inst->pszBindPort = (uchar*)strdup("4433")); + } + inst->port = atoi((char*)inst->pszBindPort); + /* check if BinAddr is set. If not, we use DEFAULT of 0.0.0.0 */ + if(inst->pszBindAddr == NULL) { + CHKmalloc(inst->pszBindAddr = (uchar*)strdup("0.0.0.0")); + } + + // Assign Loaded Peers to Netossl + SetPermPeers(inst, inst->pPermPeersRoot); + + /* all ok, ready to start up */ + inst->bEnableLstn = -1; + +finalize_it: +CODE_STD_FINALIZERnewInpInst + cnfparamvalsDestruct(pvals, &inppblk); +ENDnewInpInst + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->pszBindRuleset = NULL; + pModConf->drvrAuthMode = OSSL_AUTH_CERTANON; + /* init legacy config variables */ + cs.pszBindRuleset = NULL; +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "imdtls: error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for imdtls:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "tls.authmode")) { + char* pszAuthMode = es_str2cstr(pvals[i].val.d.estr, NULL); + if(!strcasecmp(pszAuthMode, "fingerprint")) + loadModConf->drvrAuthMode = OSSL_AUTH_CERTFINGERPRINT; + else if(!strcasecmp(pszAuthMode, "name")) + loadModConf->drvrAuthMode = OSSL_AUTH_CERTNAME; + else if(!strcasecmp(pszAuthMode, "certvalid")) + loadModConf->drvrAuthMode = OSSL_AUTH_CERTVALID; + else + loadModConf->drvrAuthMode = OSSL_AUTH_CERTANON; + free(pszAuthMode); + } else if(!strcmp(modpblk.descr[i].name, "ruleset")) { + loadModConf->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("imdtls: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(loadModConf->pszBindRuleset == NULL) { + if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) { + loadModConf->pszBindRuleset = NULL; + } else { + CHKmalloc(loadModConf->pszBindRuleset = ustrdup(cs.pszBindRuleset)); + } + } else { + if((cs.pszBindRuleset != NULL) && (cs.pszBindRuleset[0] != '\0')) { + LogError(0, RS_RET_DUP_PARAM, "imdtls: ruleset " + "set via legacy directive ignored"); + } + } +finalize_it: + free(cs.pszBindRuleset); + cs.pszBindRuleset = NULL; + loadModConf = NULL; /* done loading */ +ENDendCnfLoad + + +BEGINcheckCnf + instanceConf_t *inst; +CODESTARTcheckCnf + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + if(inst->pszBindRuleset == NULL && pModConf->pszBindRuleset != NULL) { + CHKmalloc(inst->pszBindRuleset = ustrdup(pModConf->pszBindRuleset)); + } + std_checkRuleset(pModConf, inst); + } +finalize_it: +ENDcheckCnf + + +BEGINactivateCnfPrePrivDrop + instanceConf_t *inst; +CODESTARTactivateCnfPrePrivDrop + runModConf = pModConf; + DBGPRINTF("imdtls: activate addListners for dtls\n"); + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + addListner(pModConf, inst); + } +ENDactivateCnfPrePrivDrop + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; + int i; +CODESTARTfreeCnf + for(inst = pModConf->root ; inst != NULL ; ) { + free(inst->pszBindPort); + if (inst->pszBindAddr != NULL) { + free(inst->pszBindAddr); + } + free(inst->pszBindRuleset); + free(inst->pszInputName); + + // --- CleanUP OpenSSL ressources + // Remove SSL CLients + if(inst->dtlsClients != NULL) { + for (i = 0; i < MAX_DTLS_CLIENTS; ++i) { + DTLScleanupSession(inst, i); + free(inst->dtlsClients[i]); + } + free(inst->dtlsClients); + } + + // DeConstruct pNetOssl helper + net_ossl.Destruct(&inst->pNetOssl); + + // --- + + if(inst->pPermPeersRoot != NULL) { + net.DestructPermittedPeers(&inst->pPermPeersRoot); + } + + if(inst->bEnableLstn) { + prop.Destruct(&inst->pInputName); + statsobj.Destruct(&(inst->stats)); + } + del = inst; + inst = inst->next; + free(del); + } + free(pModConf->pszBindRuleset); +ENDfreeCnf + + + +/* This function is called to gather input. + * In essence, it just starts the pool of workers. To save resources, + * we run one of the workers on our own thread -- otherwise that thread would + * just idle around and wait for the workers to finish. + */ +BEGINrunInput + instanceConf_t *inst; + pthread_attr_t wrkrThrdAttr; +CODESTARTrunInput + pthread_attr_init(&wrkrThrdAttr); + pthread_attr_setstacksize(&wrkrThrdAttr, 4096*1024); + + DBGPRINTF("imdtls: create dtls handling threads\n"); + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + if(inst->bEnableLstn) { + pthread_create(&inst->tid, &wrkrThrdAttr, startDtlsHandler, inst); + } + } + pthread_attr_destroy(&wrkrThrdAttr); + + DBGPRINTF("imdtls: starting to wait for close condition\n"); + while(glbl.GetGlobalInputTermState() == 0) { + srSleep(0, 400000); + } + + DBGPRINTF("imdtls: received close signal, signaling instance threads...\n"); + for (inst = runModConf->root; inst != NULL; inst = inst->next) { + pthread_kill(inst->tid, SIGTTIN); + DTLSCloseSocket(inst); + } + + DBGPRINTF("imdtls: threads signaled, waiting for join..."); + for (inst = runModConf->root ; inst != NULL ; inst = inst->next) { + pthread_join(inst->tid, NULL); + } + + DBGPRINTF("imdtls: finished threads, stopping\n"); +ENDrunInput + + +BEGINwillRun +CODESTARTwillRun + /* we need to create the inputName property (only once during our lifetime) */ + CHKiRet(prop.Construct(&pInputName)); + CHKiRet(prop.SetString(pInputName, UCHAR_CONSTANT("imdtls"), sizeof("imdtls") - 1)); + CHKiRet(prop.ConstructFinalize(pInputName)); +finalize_it: +ENDwillRun + +/* This function is called by the framework after runInput() has been terminated. It + * shall free any resources and prepare the module for unload. + * CODEqueryEtryPt_STD_IMOD_QUERIES + */ +BEGINafterRun +CODESTARTafterRun + /* TODO: do cleanup here ?! */ + dbgprintf("imdtls: AfterRun\n"); + if(pInputName != NULL) + prop.Destruct(&pInputName); +ENDafterRun + +BEGINmodExit +CODESTARTmodExit + DBGPRINTF("imdtls: modExit\n"); + /* release objects we used */ + objRelease(net_ossl, LM_NET_OSSL_FILENAME); + objRelease(statsobj, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(net, LM_NET_FILENAME); + objRelease(glbl, CORE_COMPONENT); +ENDmodExit + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + DBGPRINTF("imdtls: modInit\n"); + /* request objects we use */ + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(net, LM_NET_FILENAME)); + CHKiRet(objUse(net_ossl, LM_NET_OSSL_FILENAME)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); +ENDmodInit diff --git a/plugins/imfile/Makefile.am b/plugins/imfile/Makefile.am new file mode 100644 index 0000000..6bd3e82 --- /dev/null +++ b/plugins/imfile/Makefile.am @@ -0,0 +1,12 @@ +pkglib_LTLIBRARIES = imfile.la + +if OS_AIX +LIBMATH = -lm +else +LIBMATH = +endif + +imfile_la_SOURCES = imfile.c siphash.c +imfile_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) $(LIBLOGGING_STDLOG_CFLAGS) +imfile_la_LDFLAGS = -module -avoid-version $(LIBFASTJSON_LIBS) $(LIBMATH) +imfile_la_LIBADD = diff --git a/plugins/imfile/Makefile.in b/plugins/imfile/Makefile.in new file mode 100644 index 0000000..e145e5e --- /dev/null +++ b/plugins/imfile/Makefile.in @@ -0,0 +1,809 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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reading text file data. A text file is a + * non-binary file who's lines are delemited by the \n character. + * + * Work originally begun on 2008-02-01 by Rainer Gerhards + * + * Copyright 2008-2019 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdio.h> +#include <stdlib.h> +#include <assert.h> +#include <string.h> +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <sys/types.h> +#include <unistd.h> +#include <time.h> +#include <glob.h> +#include <poll.h> +#include <json.h> +#include <fnmatch.h> +#ifdef HAVE_SYS_INOTIFY_H +#include <sys/inotify.h> +#include <linux/types.h> +#endif +#ifdef HAVE_SYS_STAT_H +# include <sys/stat.h> +#endif +#if defined(OS_SOLARIS) && defined (HAVE_PORT_SOURCE_FILE) +#include <port.h> +#include <sys/port.h> +#endif +#include "rsyslog.h" /* error codes etc... */ +#include "dirty.h" +#include "cfsysline.h" /* access to config file objects */ +#include "module-template.h" /* generic module interface code - very important, read it! */ +#include "srUtils.h" /* some utility functions */ +#include "msg.h" +#include "stream.h" +#include "errmsg.h" +#include "glbl.h" +#include "unicode-helper.h" +#include "prop.h" +#include "stringbuf.h" +#include "ruleset.h" +#include "ratelimit.h" +#include "srUtils.h" +#include "parserif.h" +#include "datetime.h" + +#include <regex.h> + +/* some platforms do not have large file support :( */ +#ifndef O_LARGEFILE +# define O_LARGEFILE 0 +#endif +#ifndef HAVE_LSEEK64 +# define lseek64(fd, offset, whence) lseek(fd, offset, whence) +#endif + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imfile") + +/* defines */ +#define FILE_ID_HASH_SIZE 20 /* max size of a file_id hash */ +#define FILE_ID_SIZE 512 /* how many bytes are used for file-id? */ +#define FILE_DELETE_DELAY 5 /* how many seconds to wait before finally deleting a gone file */ + +/* Module static data */ +DEF_IMOD_STATIC_DATA /* must be present, starts static data */ +DEFobjCurrIf(glbl) +DEFobjCurrIf(strm) +DEFobjCurrIf(prop) +DEFobjCurrIf(ruleset) +DEFobjCurrIf(datetime) + +extern int rs_siphash(const uint8_t *in, const size_t inlen, const uint8_t *k, + uint8_t *out, const size_t outlen); /* see siphash.c */ + +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ + +#define NUM_MULTISUB 1024 /* default max number of submits */ +#define DFLT_PollInterval 10 +#define INIT_WDMAP_TAB_SIZE 1 /* default wdMap table size - is extended as needed, use 2^x value */ +#define ADD_METADATA_UNSPECIFIED -1 + +/* If set to 1, fileTableDisplay will be compiled and used for debugging */ +#define ULTRA_DEBUG 0 + +/* Setting GLOB_BRACE to ZERO which disables support for GLOB_BRACE if not available on current platform */ +#ifndef GLOB_BRACE + #define GLOB_BRACE 0 +#endif + +typedef struct per_minute_rate_limit_s per_minute_rate_limit_t; + +struct per_minute_rate_limit_s { + uint64_t maxBytesPerMinute; + uint32_t maxLinesPerMinute; + uint64_t bytesThisMinute; /* bytes sent so far this minute */ + uint32_t linesThisMinute; /* lines sent to far this minute */ + time_t rateLimitingMinute; /* minute we are currently rate limiting for */ +}; + +static struct configSettings_s { + uchar *pszFileName; + uchar *pszFileTag; + uchar *pszStateFile; + uchar *pszBindRuleset; + int iPollInterval; + int iPersistStateInterval; /* how often if state file to be persisted? (default 0->never) */ + int bPersistStateAfterSubmission;/* persist state file after messages have been submitted */ + int iFacility; /* local0 */ + int iSeverity; /* notice, as of rfc 3164 */ + int readMode; /* mode to use for ReadMultiLine call */ + int64 maxLinesAtOnce; /* how many lines to process in a row? */ + uint64_t maxBytesPerMinute; /* maximum bytes per minute to send before rate limiting */ + uint64_t maxLinesPerMinute; /* maximum lines per minute to send before rate limiting */ + uint32_t trimLineOverBytes; /* 0: never trim line, positive number: trim line if over bytes */ +} cs; + +struct instanceConf_s { + uchar *pszFileName; + uchar *pszFileName_forOldStateFile; /* we unfortunately needs this to read old state files */ + uchar *pszDirName; + uchar *pszFileBaseName; + uchar *pszTag; + size_t lenTag; + uchar *pszStateFile; + uchar *pszBindRuleset; + int nMultiSub; + per_minute_rate_limit_t perMinuteRateLimits; + int iPersistStateInterval; + int bPersistStateAfterSubmission; + int iFacility; + int iSeverity; + int readTimeout; + unsigned delay_perMsg; + sbool bRMStateOnDel; + uint8_t readMode; + uchar *startRegex; + uchar *endRegex; + regex_t start_preg; /* compiled version of startRegex */ + regex_t end_preg; /* compiled version of endRegex */ + sbool discardTruncatedMsg; + sbool msgDiscardingError; + sbool escapeLF; + sbool reopenOnTruncate; + sbool addCeeTag; + sbool addMetadata; + sbool freshStartTail; + sbool fileNotFoundError; + int maxLinesAtOnce; + uint32_t trimLineOverBytes; + uint32_t ignoreOlderThan; + int msgFlag; + uchar *escapeLFString; + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + struct instanceConf_s *next; +}; + + +/* file system objects */ +typedef struct fs_edge_s fs_edge_t; +typedef struct fs_node_s fs_node_t; +typedef struct act_obj_s act_obj_t; +struct act_obj_s { + act_obj_t *prev; + act_obj_t *next; + fs_edge_t *edge; /* edge which this object belongs to */ + char *name; /* full path name of active object */ + char *basename; /* only basename */ //TODO: remove when refactoring rename support + char *source_name; /* if this object is target of a symlink, source_name is its name (else NULL) */ + //char *statefile; /* base name of state file (for move operations) */ + int wd; +#if defined(OS_SOLARIS) && defined (HAVE_PORT_SOURCE_FILE) + struct fileinfo *pfinf; + sbool bPortAssociated; + int is_deleted; /* debugging: entry deleted? */ +#endif + time_t timeoutBase; /* what time to calculate the timeout against? */ + /* file dynamic data */ + char file_id[FILE_ID_HASH_SIZE]; /* file id for this entry, once we could obtain it */ + char file_id_prev[FILE_ID_HASH_SIZE]; /* previous file id for this entry, set if changed */ + int in_move; /* workaround for inotify move: if set, state file must not be deleted */ + ino_t ino; /* current inode nbr */ + int fd; /* fd to file in order to obtain file_id (needs to be preserved across move) */ + strm_t *pStrm; /* its stream (NULL if not assigned) */ + int nRecords; /**< How many records did we process before persisting the stream? */ + ratelimit_t *ratelimiter; + multi_submit_t multiSub; + int is_symlink; + time_t time_to_delete; /* Helper variable to DELAY the actual file delete in act_obj_unlink */ +}; +struct fs_edge_s { + fs_node_t *parent; /* node pointing to this edge */ + fs_node_t *node; /* node this edge points to */ + fs_edge_t *next; + uchar *name; + uchar *path; + act_obj_t *active; + int is_file; + int ninst; /* nbr of instances in instarr */ + instanceConf_t **instarr; +}; +struct fs_node_s { + fs_edge_t *edges; /* NULL in leaf nodes */ + fs_node_t *root; /* node one level up (NULL for file system root) */ +}; + + +/* forward definitions */ +static rsRetVal persistStrmState(act_obj_t *); +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); +static rsRetVal ATTR_NONNULL(1) pollFile(act_obj_t *act); +static int ATTR_NONNULL() getBasename(uchar *const __restrict__ basen, uchar *const __restrict__ path); +static void ATTR_NONNULL() act_obj_unlink(act_obj_t *act); +static uchar * ATTR_NONNULL(1, 2) getStateFileName(const act_obj_t *, uchar *, const size_t); +static int ATTR_NONNULL() getFullStateFileName(const uchar *const, const char *const, + uchar *const pszout, const size_t ilenout); + + +#define OPMODE_POLLING 0 +#define OPMODE_INOTIFY 1 +#define OPMODE_FEN 2 + +/* config variables */ +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + int iPollInterval; /* number of seconds to sleep when there was no file activity */ + int readTimeout; + int timeoutGranularity; /* value in ms */ + instanceConf_t *root, *tail; + fs_node_t *conf_tree; + uint8_t opMode; + sbool configSetViaV2Method; + uchar *stateFileDirectory; + sbool sortFiles; + sbool normalizePath; /* normalize file system pathes (all start with root dir) */ + sbool haveReadTimeouts; /* use special processing if read timeouts exist */ + sbool bHadFileData; /* actually a global variable: + 1 - last call to pollFile() had data + 0 - last call to pollFile() had NO data + Must be manually reset to 0 if desired. Helper for + polling mode. + */ +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for run process */ +static modConfData_t *currModConf = NULL;/* modConf ptr to CURRENT mod conf (run or load) */ + + +#ifdef HAVE_INOTIFY_INIT +/* We need to map watch descriptors to our actual objects. Unfortunately, the + * inotify API does not provide us with any cookie, so a simple O(1) algorithm + * cannot be done (what a shame...). We assume that maintaining the array is much + * less often done than looking it up, so we keep the array sorted by watch descriptor + * and do a binary search on the wd we get back. This is at least O(log n), which + * is not too bad for the anticipated use case. + */ +struct wd_map_s { + int wd; /* ascending sort key */ + act_obj_t *act; /* point to related active object */ +}; +typedef struct wd_map_s wd_map_t; +static wd_map_t *wdmap = NULL; +static int nWdmap; +static int allocMaxWdmap; +static int ino_fd; /* fd for inotify calls */ +#endif /* #if HAVE_INOTIFY_INIT -------------------------------------------------- */ + +#if defined(OS_SOLARIS) && defined (HAVE_PORT_SOURCE_FILE) +struct fileinfo { + struct file_obj fobj; + int events; + int port; +}; + +static int glport; /* Static port handle for FEN api*/ +#endif /* #if OS_SOLARIS -------------------------------------------------- */ + +static prop_t *pInputName = NULL; +/* there is only one global inputName for all messages generated by this input */ + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "pollinginterval", eCmdHdlrPositiveInt, 0 }, + { "readtimeout", eCmdHdlrNonNegInt, 0 }, + { "timeoutgranularity", eCmdHdlrPositiveInt, 0 }, + { "sortfiles", eCmdHdlrBinary, 0 }, + { "statefile.directory", eCmdHdlrString, 0 }, + { "normalizepath", eCmdHdlrBinary, 0 }, + { "mode", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "file", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "tag", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "severity", eCmdHdlrSeverity, 0 }, + { "facility", eCmdHdlrFacility, 0 }, + { "ruleset", eCmdHdlrString, 0 }, + { "readmode", eCmdHdlrInt, 0 }, + { "startmsg.regex", eCmdHdlrString, 0 }, + { "endmsg.regex", eCmdHdlrString, 0 }, + { "discardtruncatedmsg", eCmdHdlrBinary, 0 }, + { "msgdiscardingerror", eCmdHdlrBinary, 0 }, + { "escapelf", eCmdHdlrBinary, 0 }, + { "escapelf.replacement", eCmdHdlrString, 0 }, + { "reopenontruncate", eCmdHdlrBinary, 0 }, + { "maxlinesatonce", eCmdHdlrInt, 0 }, + { "trimlineoverbytes", eCmdHdlrInt, 0 }, + { "maxsubmitatonce", eCmdHdlrInt, 0 }, + { "removestateondelete", eCmdHdlrBinary, 0 }, + { "persiststateinterval", eCmdHdlrInt, 0 }, + { "persiststateaftersubmission", eCmdHdlrBinary, 0 }, + { "deletestateonfiledelete", eCmdHdlrBinary, 0 }, + { "delay.message", eCmdHdlrNonNegInt, 0 }, + { "addmetadata", eCmdHdlrBinary, 0 }, + { "addceetag", eCmdHdlrBinary, 0 }, + { "statefile", eCmdHdlrString, CNFPARAM_DEPRECATED }, + { "readtimeout", eCmdHdlrNonNegInt, 0 }, + { "freshstarttail", eCmdHdlrBinary, 0}, + { "filenotfounderror", eCmdHdlrBinary, 0}, + { "needparse", eCmdHdlrBinary, 0}, + { "ignoreolderthan", eCmdHdlrInt, 0}, + { "maxbytesperminute", eCmdHdlrInt, 0}, + { "maxlinesperminute", eCmdHdlrInt, 0} +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; + +#include "im-helper.h" /* must be included AFTER the type definitions! */ + + +/* Support for "old cruft" state files will potentially become optional in the + * future (hopefully). To prepare so, we use conditional compilation with a + * fixed-true condition ;-) -- rgerhards, 2018-03-28 + * reason: https://github.com/rsyslog/rsyslog/issues/2231#issuecomment-376862280 + */ +#define ENABLE_V1_STATE_FILE_FORMAT_SUPPORT 1 +#ifdef ENABLE_V1_STATE_FILE_FORMAT_SUPPORT +static uchar * ATTR_NONNULL(1, 2) +OLD_getStateFileName(const instanceConf_t *const inst, + uchar *const __restrict__ buf, + const size_t lenbuf) +{ + DBGPRINTF("OLD_getStateFileName trying '%s'\n", inst->pszFileName_forOldStateFile); + snprintf((char*)buf, lenbuf - 1, "imfile-state:%s", inst->pszFileName_forOldStateFile); + buf[lenbuf-1] = '\0'; /* be on the safe side... */ + uchar *p = buf; + for( ; *p ; ++p) { + if(*p == '/') + *p = '-'; + } + return buf; +} + + +static const uchar * +getStateFileDir(void) +{ + const uchar *wrkdir; + assert(currModConf != NULL); + if(currModConf->stateFileDirectory == NULL) { + wrkdir = glblGetWorkDirRaw(currModConf->pConf); + } else { + wrkdir = currModConf->stateFileDirectory; + } + return(wrkdir); +} + + +/* try to open an old-style state file for given file. If the state file does not + * exist or cannot be read, an error is returned. + */ +static rsRetVal ATTR_NONNULL(1) +OLD_openFileWithStateFile(act_obj_t *const act) +{ + DEFiRet; + strm_t *psSF = NULL; + uchar pszSFNam[MAXFNAME]; + size_t lenSFNam; + struct stat stat_buf; + uchar statefile[MAXFNAME]; + const instanceConf_t *const inst = act->edge->instarr[0];// TODO: same file, multiple instances? + + uchar *const statefn = OLD_getStateFileName(inst, statefile, sizeof(statefile)); + DBGPRINTF("OLD_openFileWithStateFile: trying to open state for '%s', state file '%s'\n", + act->name, statefn); + + /* Get full path and file name */ + lenSFNam = getFullStateFileName(statefn, "", pszSFNam, sizeof(pszSFNam)); + + /* check if the file exists */ + if(stat((char*) pszSFNam, &stat_buf) == -1) { + if(errno == ENOENT) { + DBGPRINTF("OLD_openFileWithStateFile: NO state file (%s) exists for '%s'\n", + pszSFNam, act->name); + ABORT_FINALIZE(RS_RET_FILE_NOT_FOUND); + } else { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + DBGPRINTF("OLD_openFileWithStateFile: error trying to access state " + "file for '%s':%s\n", act->name, errStr); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + } + + /* If we reach this point, we have a state file */ + + DBGPRINTF("old state file found - instantiating from it\n"); + CHKiRet(strm.Construct(&psSF)); + CHKiRet(strm.SettOperationsMode(psSF, STREAMMODE_READ)); + CHKiRet(strm.SetsType(psSF, STREAMTYPE_FILE_SINGLE)); + CHKiRet(strm.SetFName(psSF, pszSFNam, lenSFNam)); + CHKiRet(strm.SetFileNotFoundError(psSF, inst->fileNotFoundError)); + CHKiRet(strm.ConstructFinalize(psSF)); + + /* read back in the object */ + CHKiRet(obj.Deserialize(&act->pStrm, (uchar*) "strm", psSF, NULL, act)); + free(act->pStrm->pszFName); + CHKmalloc(act->pStrm->pszFName = ustrdup(act->name)); + + strm.CheckFileChange(act->pStrm); + CHKiRet(strm.SeekCurrOffs(act->pStrm)); + + /* we now persist the new state file and delete the old one, so we will + * never have to deal with the old one. */ + persistStrmState(act); + unlink((char*)pszSFNam); + +finalize_it: + if(psSF != NULL) + strm.Destruct(&psSF); + RETiRet; +} +#endif /* #ifdef ENABLE_V1_STATE_FILE_FORMAT_SUPPORT */ + + + +#if 0 // Code we can potentially use for new functionality // TODO: use or remove +//TODO add a kind of portable asprintf: +static const char * ATTR_NONNULL() +gen_full_name(const char *const dirname, const char *const name) +{ + const size_t len_full_name = strlen(dirname) + 1 + strlen(name) + 1; + char *const full_name = malloc(len_full_name); + if(full_name == NULL) + return NULL; + + snprintf(full_name, len_full_name, "%s/%s", dirname, name); + return full_name; +} +#endif + + +#ifdef HAVE_INOTIFY_INIT +#if ULTRA_DEBUG == 1 +static void +dbg_wdmapPrint(const char *msg) +{ + int i; + DBGPRINTF("%s\n", msg); + for(i = 0 ; i < nWdmap ; ++i) + DBGPRINTF("wdmap[%d]: wd: %d, act %p, name: %s\n", + i, wdmap[i].wd, wdmap[i].act, wdmap[i].act->name); +} +#endif + +static rsRetVal +wdmapInit(void) +{ + DEFiRet; + free(wdmap); + CHKmalloc(wdmap = malloc(sizeof(wd_map_t) * INIT_WDMAP_TAB_SIZE)); + allocMaxWdmap = INIT_WDMAP_TAB_SIZE; + nWdmap = 0; +finalize_it: + RETiRet; +} + + +/* note: we search backwards, as inotify tends to return increasing wd's */ +static rsRetVal +wdmapAdd(int wd, act_obj_t *const act) +{ + wd_map_t *newmap; + int newmapsize; + int i; + DEFiRet; + + for(i = nWdmap-1 ; i >= 0 && wdmap[i].wd > wd ; --i) + ; /* just scan */ + if(i >= 0 && wdmap[i].wd == wd) { + LogError(0, RS_RET_INTERNAL_ERROR, "imfile: wd %d already in wdmap!", wd); + ABORT_FINALIZE(RS_RET_FILE_ALREADY_IN_TABLE); + } + ++i; + /* i now points to the entry that is to be moved upwards (or end of map) */ + if(nWdmap == allocMaxWdmap) { + newmapsize = 2 * allocMaxWdmap; + CHKmalloc(newmap = realloc(wdmap, sizeof(wd_map_t) * newmapsize)); + // TODO: handle the error more intelligently? At all possible? -- 2013-10-15 + wdmap = newmap; + allocMaxWdmap = newmapsize; + } + if(i < nWdmap) { + /* we need to shift to make room for new entry */ + memmove(wdmap + i + 1, wdmap + i, sizeof(wd_map_t) * (nWdmap - i)); + } + wdmap[i].wd = wd; + wdmap[i].act = act; + ++nWdmap; + DBGPRINTF("add wdmap[%d]: wd %d, act obj %p, path %s\n", i, wd, act, act->name); + +finalize_it: + RETiRet; +} + +/* return wd or -1 on error */ +static int +in_setupWatch(act_obj_t *const act, const int is_file) +{ + int wd = -1; + if(runModConf->opMode != OPMODE_INOTIFY) + goto done; + + wd = inotify_add_watch(ino_fd, act->name, + (is_file) ? IN_MODIFY|IN_DONT_FOLLOW : IN_CREATE|IN_DELETE|IN_MOVED_FROM|IN_MOVED_TO); + if(wd < 0) { + if (errno == EACCES) { /* There is high probability of selinux denial on top-level paths */ + DBGPRINTF("imfile: permission denied when adding watch for '%s'\n", act->name); + } else { + LogError(errno, RS_RET_IO_ERROR, "imfile: cannot watch object '%s'", act->name); + } + goto done; + } + wdmapAdd(wd, act); + DBGPRINTF("in_setupWatch: watch %d added for %s(object %p)\n", wd, act->name, act); +done: return wd; +} + +/* compare function for bsearch() */ +static int +wdmap_cmp(const void *k, const void *a) +{ + int key = *((int*) k); + wd_map_t *etry = (wd_map_t*) a; + if(key < etry->wd) + return -1; + else if(key > etry->wd) + return 1; + else + return 0; +} +/* looks up a wdmap entry and returns it's index if found + * or -1 if not found. + */ +static wd_map_t * +wdmapLookup(int wd) +{ + return bsearch(&wd, wdmap, nWdmap, sizeof(wd_map_t), wdmap_cmp); +} + + +static rsRetVal +wdmapDel(const int wd) +{ + int i; + DEFiRet; + + for(i = 0 ; i < nWdmap && wdmap[i].wd < wd ; ++i) + ; /* just scan */ + if(i == nWdmap || wdmap[i].wd != wd) { + DBGPRINTF("wd %d shall be deleted but not in wdmap!\n", wd); + FINALIZE; + } + + if(i < nWdmap-1) { + /* we need to shift to delete it (see comment at wdmap definition) */ + memmove(wdmap + i, wdmap + i + 1, sizeof(wd_map_t) * (nWdmap - i - 1)); + } + --nWdmap; + DBGPRINTF("wd %d deleted, was idx %d\n", wd, i); + +finalize_it: + RETiRet; +} + +#endif // #ifdef HAVE_INOTIFY_INIT + +#if defined(OS_SOLARIS) && defined (HAVE_PORT_SOURCE_FILE) +static void ATTR_NONNULL() +fen_setupWatch(act_obj_t *const act) +{ + DBGPRINTF("fen_setupWatch: enter, opMode %d\n", runModConf->opMode); + if(runModConf->opMode != OPMODE_FEN) + goto done; + + DBGPRINTF("fen_setupWatch: %s\n", act->name); + if(act->pfinf == NULL) { + act->pfinf = malloc(sizeof(struct fileinfo)); + if (act->pfinf == NULL) { + LogError(errno, RS_RET_OUT_OF_MEMORY, "imfile: fen_setupWatch alloc memory " + "for fileinfo failed "); + goto done; + } + if ((act->pfinf->fobj.fo_name = strdup(act->name)) == NULL) { + LogError(errno, RS_RET_OUT_OF_MEMORY, "imfile: fen_setupWatch alloc memory " + "for strdup failed "); + free(act->pfinf); + act->pfinf = NULL; + goto done; + } + act->pfinf->events = FILE_MODIFIED; + act->pfinf->port = glport; + act->bPortAssociated = 0; + } + + DBGPRINTF("fen_setupWatch: bPortAssociated %d\n", act->bPortAssociated); + if(act->bPortAssociated) { + goto done; + } + + struct stat fileInfo; + const int r = stat(act->name, &fileInfo); + if(r == -1) { /* object gone away? */ + DBGPRINTF("fen_setupWatch: file gone away, no watch: '%s'\n", act->name); + goto done; + } + + /* note: FEN watch must be re-registered each time - this is what we do now */ + act->pfinf->fobj.fo_atime = fileInfo.st_atim; + act->pfinf->fobj.fo_mtime = fileInfo.st_mtim; + act->pfinf->fobj.fo_ctime = fileInfo.st_ctim; + if(port_associate(glport, PORT_SOURCE_FILE, (uintptr_t)&(act->pfinf->fobj), + act->pfinf->events, (void *)act) == -1) { + LogError(errno, RS_RET_SYS_ERR, "fen_setupWatch: Failed to associate port for file " + ": %s\n", act->pfinf->fobj.fo_name); + goto done; + } else { + /* Port successfull listening now*/ + DBGPRINTF("fen_setupWatch: associated port for file %s\n", act->name); + act->bPortAssociated = 1; + } + + DBGPRINTF("in_setupWatch: fen association added for %s\n", act->name); +done: return; +} +#else +static void ATTR_NONNULL() +fen_setupWatch(act_obj_t *const act __attribute__((unused))) +{ + DBGPRINTF("fen_setupWatch: DUMMY CALLED - not on Solaris?\n"); +} +#endif /* FEN */ + +static void +fs_node_print(const fs_node_t *const node, const int level) +{ + fs_edge_t *chld; + act_obj_t *act; + dbgprintf("node print[%2.2d]: %p edges:\n", level, node); + + for(chld = node->edges ; chld != NULL ; chld = chld->next) { + dbgprintf("node print[%2.2d]: child %p '%s' isFile %d, path: '%s'\n", + level, chld->node, chld->name, chld->is_file, chld->path); + for(int i = 0 ; i < chld->ninst ; ++i) { + dbgprintf("\tinst: %p\n", chld->instarr[i]); + } + for(act = chld->active ; act != NULL ; act = act->next) { + dbgprintf("\tact : %p\n", act); + dbgprintf("\tact : %p: name '%s', wd: %d\n", + act, act->name, act->wd); + } + } + for(chld = node->edges ; chld != NULL ; chld = chld->next) { + fs_node_print(chld->node, level+1); + } +} + +static sbool +isIgnoreOlderFile(const instanceConf_t *const inst, const char *const name) +{ + if (inst->ignoreOlderThan) + { + struct stat stat_buf; + time_t tt; + /* skip old files */ + datetime.GetTime(&tt); + if (stat((char *)name, &stat_buf) == 0 && difftime(tt, stat_buf.st_mtime) > inst->ignoreOlderThan) { + return 1; + } + } + return 0; +} + +/* add a new file system object if it not yet exists, ignore call + * if it already does. + */ +static rsRetVal ATTR_NONNULL(1,2) +act_obj_add(fs_edge_t *const edge, const char *const name, const int is_file, + const ino_t ino, const int is_symlink, const char *const source) +{ + act_obj_t *act = NULL; + char basename[MAXFNAME]; + DEFiRet; + int fd = -1; + + DBGPRINTF("act_obj_add: edge %p, name '%s' (source '%s')\n", edge, name, source? source : "---"); + + if (isIgnoreOlderFile(edge->instarr[0], name)) { + ABORT_FINALIZE(RS_RET_ERR); + } + + for(act = edge->active ; act != NULL ; act = act->next) { + if(!strcmp(act->name, name)) { + if (!source || !act->source_name || !strcmp(act->source_name, source)) { + DBGPRINTF("active object '%s' already exists in '%s' - no need to add\n", + name, edge->path); + FINALIZE; + } + } + } + DBGPRINTF("need to add new active object '%s' in '%s' - checking if accessible\n", name, edge->path); + fd = open(name, O_RDONLY | O_CLOEXEC); + if(fd < 0) { + if (is_file) { + LogError(errno, RS_RET_ERR, "imfile: error accessing file '%s'", name); + } else { /* reporting only in debug for dirs as higher lvl paths are likely blocked by selinux */ + DBGPRINTF("imfile: error accessing directory '%s'", name); + } + ABORT_FINALIZE(RS_RET_NO_FILE_ACCESS); + } + DBGPRINTF("add new active object '%s' in '%s'\n", name, edge->path); + CHKmalloc(act = calloc(sizeof(act_obj_t), 1)); + CHKmalloc(act->name = strdup(name)); + if (-1 == getBasename((uchar*)basename, (uchar*)name)) { + CHKmalloc(act->basename = strdup(name)); /* assume basename is same as name */ + } else { + CHKmalloc(act->basename = strdup(basename)); + } + act->edge = edge; + act->ino = ino; + act->fd = fd; + act->file_id[0] = '\0'; + act->file_id_prev[0] = '\0'; + act->is_symlink = is_symlink; + act->ratelimiter = NULL; + act->time_to_delete = 0; + if (source) { /* we are target of symlink */ + CHKmalloc(act->source_name = strdup(source)); + } else { + act->source_name = NULL; + } + #ifdef HAVE_INOTIFY_INIT + act->wd = in_setupWatch(act, is_file); + #endif + fen_setupWatch(act); + if(is_file && !is_symlink) { + const instanceConf_t *const inst = edge->instarr[0];// TODO: same file, multiple instances? + CHKiRet(ratelimitNew(&act->ratelimiter, "imfile", name)); + CHKmalloc(act->multiSub.ppMsgs = malloc(inst->nMultiSub * sizeof(smsg_t *))); + act->multiSub.maxElem = inst->nMultiSub; + act->multiSub.nElem = 0; + pollFile(act); + } + + /* all well, add to active list */ + if(edge->active != NULL) { + edge->active->prev = act; + } + act->next = edge->active; + edge->active = act; +finalize_it: + if(iRet != RS_RET_OK) { + if(act != NULL) { + if (act->ratelimiter != NULL) + ratelimitDestruct(act->ratelimiter); + free(act->name); + free(act); + } + if(fd != -1) { + close(fd); + } + } + RETiRet; +} + + +/* this walks an edges active list and detects and acts on any changes + * seen there. It does NOT detect newly appeared files, as they are not + * inside the active list! + */ +static void +detect_updates(fs_edge_t *const edge) +{ + act_obj_t *act; + struct stat fileInfo; + int restart = 0; + + for(act = edge->active ; act != NULL ; act = act->next) { + DBGPRINTF("detect_updates checking active obj '%s'\n", act->name); + // lstat() has the disadvantage, that we get "deleted" when the name has changed + // but inode is still the same (like with logrotate) + int r = lstat(act->name, &fileInfo); + if(r == -1) { /* object gone away? */ + /* now let's see if the file itself already exist (e.g. rotated away) */ + /* NOTE: this will NOT stall the file. The reason is that when a new file + * with the same name is detected, we will not run into this code. + TODO: check the full implications, there are for sure some! + e.g. file has been closed, so we will never have old inode (but + why was it closed then? --> check) + */ + r = fstat(act->ino, &fileInfo); + if(r == -1) { + time_t ttNow; + time(&ttNow); + if (act->time_to_delete == 0) { + act->time_to_delete = ttNow; + } + /* First time we run into this code, we need to give imfile a little time to process + * the old file in case a process is still writing into it until the FILE_DELETE_DELAY + * is reached OR the inode has changed (see elseif below). In most cases, the + * delay will never be reached and the file will be closed when the inode has changed. + * Directories are deleted without delay. + */ + sbool is_file = act->edge->is_file; + if (!is_file || act->time_to_delete + FILE_DELETE_DELAY < ttNow) { + DBGPRINTF("detect_updates obj gone away, unlinking: " + "'%s', ttDelete: %lds, ttNow:%ld isFile: %d\n", + act->name, ttNow - (act->time_to_delete + FILE_DELETE_DELAY), ttNow, is_file); + act_obj_unlink(act); + restart = 1; + } else { + DBGPRINTF("detect_updates obj gone away, keep '%s' open: %ld/%ld/%lds!\n", + act->name, act->time_to_delete, ttNow, ttNow - act->time_to_delete); + pollFile(act); + } + } + break; + } else if(fileInfo.st_ino != act->ino) { + DBGPRINTF("file '%s' inode changed from %llu to %llu, unlinking from " + "internal lists\n", act->name, (long long unsigned) act->ino, + (long long unsigned) fileInfo.st_ino); + act_obj_unlink(act); + restart = 1; + break; + } + } + + if (restart) { + detect_updates(edge); + } +} + + +/* check if active files need to be processed. This is only needed in + * polling mode. + */ +static void ATTR_NONNULL() +poll_active_files(fs_edge_t *const edge) +{ + if( runModConf->opMode != OPMODE_POLLING + || !edge->is_file + || glbl.GetGlobalInputTermState() != 0) { + return; + } + + act_obj_t *act; + for(act = edge->active ; act != NULL ; act = act->next) { + fen_setupWatch(act); + DBGPRINTF("poll_active_files: polling '%s'\n", act->name); + pollFile(act); + } +} + +static rsRetVal ATTR_NONNULL() +process_symlink(fs_edge_t *const chld, const char *symlink) +{ + DEFiRet; + char *target; + CHKmalloc(target = realpath(symlink, NULL)); + struct stat fileInfo; + if(lstat(target, &fileInfo) != 0) { + LogError(errno, RS_RET_ERR, "imfile: process_symlink: cannot stat file '%s' - ignored", target); + FINALIZE; + } + const int is_file = (S_ISREG(fileInfo.st_mode)); + DBGPRINTF("process_symlink: found '%s', File: %d (config file: %d), symlink: %d\n", + target, is_file, chld->is_file, 0); + if (act_obj_add(chld, target, is_file, fileInfo.st_ino, 0, symlink) == RS_RET_OK) { + /* need to watch parent target as well for proper rotation support */ + uint idx = ustrlen(chld->active->name) - ustrlen(chld->active->basename); + if (idx) { /* basename is different from name */ + char parent[MAXFNAME]; + idx--; /* move past trailing slash */ + memcpy(parent, chld->active->name, idx); + parent[idx] = '\0'; + if(lstat(parent, &fileInfo) != 0) { + LogError(errno, RS_RET_ERR, + "imfile: process_symlink: cannot stat directory '%s' - ignored", parent); + FINALIZE; + } + if (chld->parent->root->edges) { + DBGPRINTF("process_symlink: adding parent '%s' of target '%s'\n", parent, target); + act_obj_add(chld->parent->root->edges, parent, 0, fileInfo.st_ino, 0, NULL); + } + } + } + +finalize_it: + free(target); + RETiRet; +} + +static void ATTR_NONNULL() +poll_tree(fs_edge_t *const chld) +{ + struct stat fileInfo; + glob_t files; + int need_globfree = 0; + int issymlink; + DBGPRINTF("poll_tree: chld %p, name '%s', path: %s\n", chld, chld->name, chld->path); + detect_updates(chld); + const int ret = glob((char*)chld->path, runModConf->sortFiles|GLOB_BRACE, NULL, &files); + need_globfree = 1; + DBGPRINTF("poll_tree: glob returned %d\n", ret); + if(ret == 0) { + DBGPRINTF("poll_tree: processing %d files\n", (int) files.gl_pathc); + for(unsigned i = 0 ; i < files.gl_pathc ; i++) { + if(glbl.GetGlobalInputTermState() != 0) { + goto done; + } + char *const file = files.gl_pathv[i]; + if(lstat(file, &fileInfo) != 0) { + LogError(errno, RS_RET_ERR, + "imfile: poll_tree cannot stat file '%s' - ignored", file); + continue; + } + + if (S_ISLNK(fileInfo.st_mode)) { + rsRetVal slink_ret = process_symlink(chld, file); + if (slink_ret != RS_RET_OK) { + continue; + } + issymlink = 1; + } else { + issymlink = 0; + } + const int is_file = (S_ISREG(fileInfo.st_mode) || issymlink); + DBGPRINTF("poll_tree: found '%s', File: %d (config file: %d), symlink: %d\n", + file, is_file, chld->is_file, issymlink); + if(!is_file && S_ISREG(fileInfo.st_mode)) { + LogMsg(0, RS_RET_ERR, LOG_WARNING, + "imfile: '%s' is neither a regular file, symlink, nor a " + "directory - ignored", file); + continue; + } + if(!issymlink && (chld->is_file != is_file)) { + LogMsg(0, RS_RET_ERR, LOG_WARNING, + "imfile: '%s' is %s but %s expected - ignored", + file, (is_file) ? "FILE" : "DIRECTORY", + (chld->is_file) ? "FILE" : "DIRECTORY"); + continue; + } + act_obj_add(chld, file, is_file, fileInfo.st_ino, issymlink, NULL); + } + } + + poll_active_files(chld); + +done: + if(need_globfree) { + globfree(&files); + } + return; +} + +#ifdef HAVE_INOTIFY_INIT // TODO: shouldn't we use that in polling as well? +static void ATTR_NONNULL() +poll_timeouts(fs_edge_t *const edge) +{ + if(edge->is_file) { + act_obj_t *act; + for(act = edge->active ; act != NULL ; act = act->next) { + if(act->pStrm && strmReadMultiLine_isTimedOut(act->pStrm)) { + DBGPRINTF("timeout occurred on %s\n", act->name); + pollFile(act); + } + } + } +} +#endif + + +/* destruct a single act_obj object */ +static void +act_obj_destroy(act_obj_t *const act, const int is_deleted) +{ + uchar *statefn; + uchar statefile[MAXFNAME]; + uchar toDel[MAXFNAME]; + + if(act == NULL) + return; + + DBGPRINTF("act_obj_destroy: act %p '%s' (source '%s'), wd %d, pStrm %p, is_deleted %d, in_move %d\n", + act, act->name, act->source_name? act->source_name : "---", act->wd, act->pStrm, is_deleted, + act->in_move); + if(act->is_symlink && is_deleted) { + act_obj_t *target_act; + for(target_act = act->edge->active ; target_act != NULL ; target_act = target_act->next) { + if(target_act->source_name && !strcmp(target_act->source_name, act->name)) { + DBGPRINTF("act_obj_destroy: detect_updates for parent of target %s of %s symlink\n", + target_act->name, act->name); + detect_updates(target_act->edge->parent->root->edges); + break; + } + } + } + if(act->pStrm != NULL) { + const instanceConf_t *const inst = act->edge->instarr[0];// TODO: same file, multiple instances? + pollFile(act); /* get any left-over data */ + if(inst->bRMStateOnDel) { + statefn = getStateFileName(act, statefile, sizeof(statefile)); + getFullStateFileName(statefn, act->file_id, toDel, sizeof(toDel)); // TODO: check! + statefn = toDel; + } + persistStrmState(act); + strm.Destruct(&act->pStrm); + /* we delete state file after destruct in case strm obj initiated a write */ + if(is_deleted && !act->in_move && inst->bRMStateOnDel) { + DBGPRINTF("act_obj_destroy: deleting state file %s\n", statefn); + unlink((char*)statefn); + } + } + if(act->ratelimiter != NULL) { + ratelimitDestruct(act->ratelimiter); + } + #ifdef HAVE_INOTIFY_INIT + if(act->wd != -1) { + inotify_rm_watch(ino_fd, act->wd); + wdmapDel(act->wd); + } + #endif + if(act->fd >= 0) { + close(act->fd); + } + #if defined(OS_SOLARIS) && defined (HAVE_PORT_SOURCE_FILE) + if(act->pfinf != NULL) { + free(act->pfinf->fobj.fo_name); + free(act->pfinf); + } + #endif + free(act->basename); + free(act->source_name); + free(act->multiSub.ppMsgs); + #if defined(OS_SOLARIS) && defined (HAVE_PORT_SOURCE_FILE) + act->is_deleted = 1; + #else + free(act->name); + free(act); + #endif +} + + +/* destroy complete act list starting at given node */ +static void +act_obj_destroy_all(act_obj_t *act) +{ + if(act == NULL) + return; + + DBGPRINTF("act_obj_destroy_all: act %p '%s', wd %d, pStrm %p\n", act, act->name, act->wd, act->pStrm); + while(act != NULL) { + act_obj_t *const toDel = act; + act = act->next; + act_obj_destroy(toDel, 0); + } +} + +#if 0 +/* debug: find if ptr is still present in list */ +static void +chk_active(const act_obj_t *act, const act_obj_t *const deleted) +{ + while(act != NULL) { + DBGPRINTF("chk_active %p vs %p\n", act, deleted); + if(act->prev == deleted) + DBGPRINTF("chk_active %p prev points to %p\n", act, deleted); + if(act->next == deleted) + DBGPRINTF("chk_active %p next points to %p\n", act, deleted); + act = act->next; + DBGPRINTF("chk_active next %p\n", act); + } +} +#endif + +/* unlink act object from linked list and then + * destruct it. + */ +static void ATTR_NONNULL() +act_obj_unlink(act_obj_t *act) +{ + DBGPRINTF("act_obj_unlink %p: %s, pStrm %p, ttDelete: %ld\n", + act, act->name, act->pStrm, act->time_to_delete); + if(act->prev == NULL) { + act->edge->active = act->next; + } else { + act->prev->next = act->next; + } + if(act->next != NULL) { + act->next->prev = act->prev; + } + act_obj_destroy(act, 1); + act = NULL; +} + +static void +fs_node_destroy(fs_node_t *const node) +{ + fs_edge_t *edge; + DBGPRINTF("node destroy: %p edges:\n", node); + + for(edge = node->edges ; edge != NULL ; ) { + detect_updates(edge); + fs_node_destroy(edge->node); + fs_edge_t *const toDel = edge; + edge = edge->next; + act_obj_destroy_all(toDel->active); + free(toDel->name); + free(toDel->path); + free(toDel->instarr); + free(toDel); + } + free(node); +} + +static void ATTR_NONNULL(1, 2) +fs_node_walk(fs_node_t *const node, + void (*f_usr)(fs_edge_t*const)) +{ + DBGPRINTF("node walk: %p edges:\n", node); + + fs_edge_t *edge; + for(edge = node->edges ; edge != NULL ; edge = edge->next) { + DBGPRINTF("node walk: child %p '%s'\n", edge->node, edge->name); + f_usr(edge); + fs_node_walk(edge->node, f_usr); + } +} + + + +/* add a file system object to config tree (or update existing node with new monitor) + */ +static rsRetVal +fs_node_add(fs_node_t *const node, + fs_node_t *const source, + const uchar *const toFind, + const size_t pathIdx, + instanceConf_t *const inst) +{ + DEFiRet; + fs_edge_t *newchld = NULL; + int i; + + DBGPRINTF("fs_node_add(%p, '%s') enter, idx %zd\n", + node, toFind+pathIdx, pathIdx); + assert(toFind[0] != '\0'); + for(i = pathIdx ; (toFind[i] != '\0') && (toFind[i] != '/') ; ++i) + /*JUST SKIP*/; + const int isFile = (toFind[i] == '\0') ? 1 : 0; + uchar ourPath[PATH_MAX]; + if(i == 0) { + ourPath[0] = '/'; + ourPath[1] = '\0'; + } else { + memcpy(ourPath, toFind, i); + ourPath[i] = '\0'; + } + const size_t nextPathIdx = i+1; + const size_t len = i - pathIdx; + uchar name[PATH_MAX]; + memcpy(name, toFind+pathIdx, len); + name[len] = '\0'; + DBGPRINTF("fs_node_add: name '%s'\n", name); + node->root = source; + + fs_edge_t *chld; + for(chld = node->edges ; chld != NULL ; chld = chld->next) { + if(!ustrcmp(chld->name, name)) { + DBGPRINTF("fs_node_add(%p, '%s') found '%s'\n", chld->node, toFind, name); + /* add new instance */ + instanceConf_t **instarr_new = realloc(chld->instarr, + sizeof(instanceConf_t*) * (chld->ninst+1)); + CHKmalloc(instarr_new); + chld->instarr = instarr_new; + chld->ninst++; + chld->instarr[chld->ninst-1] = inst; + /* recurse */ + if(!isFile) { + CHKiRet(fs_node_add(chld->node, node, toFind, nextPathIdx, inst)); + } + FINALIZE; + } + } + + /* could not find node --> add it */ + DBGPRINTF("fs_node_add(%p, '%s') did not find '%s' - adding it\n", + node, toFind, name); + CHKmalloc(newchld = calloc(sizeof(fs_edge_t), 1)); + CHKmalloc(newchld->name = ustrdup(name)); + CHKmalloc(newchld->node = calloc(sizeof(fs_node_t), 1)); + CHKmalloc(newchld->path = ustrdup(ourPath)); + CHKmalloc(newchld->instarr = calloc(sizeof(instanceConf_t*), 1)); + newchld->instarr[0] = inst; + newchld->is_file = isFile; + newchld->ninst = 1; + newchld->parent = node; + + DBGPRINTF("fs_node_add(%p, '%s') returns %p\n", node, toFind, newchld->node); + + if(!isFile) { + CHKiRet(fs_node_add(newchld->node, node, toFind, nextPathIdx, inst)); + } + + /* link to list */ + newchld->next = node->edges; + node->edges = newchld; +finalize_it: + if(iRet != RS_RET_OK) { + if(newchld != NULL) { + free(newchld->name); + free(newchld->node); + free(newchld->path); + free(newchld->instarr); + free(newchld); + } + } + RETiRet; +} + + +/* Helper function to combine statefile and state file directory + * This function is guranteed to work only on config data and DOES NOT + * open or otherwise modify disk file state. + */ +static int ATTR_NONNULL() +getFullStateFileName(const uchar *const pszstatefile, + const char *const file_id, + uchar *const pszout, + const size_t ilenout) +{ + int lenout; + const uchar* pszstatedir; + + /* Get Raw Workdir, if it is NULL we need to propper handle it */ + pszstatedir = getStateFileDir(); + + /* Construct file name */ + lenout = snprintf((char*)pszout, ilenout, "%s/%s%s%s", + (char*) (pszstatedir == NULL ? "." : (char*) pszstatedir), (char*)pszstatefile, + (*file_id == '\0') ? "" : ":", file_id); + + /* return out length */ + return lenout; +} + + +/* hash function for file-id + * Takes a block of data and returns a string with the hash value. + * + * Currently one provided by Aaaron Wiebe based on perl's hashing algorithm + * (so probably pretty generic). Not for excessively large strings! + * TODO: re-think the hash function! + */ +#if defined(__clang__) +#pragma GCC diagnostic ignored "-Wunknown-attributes" +#endif +static void __attribute__((nonnull(1,3))) +#if defined(__clang__) +__attribute__((no_sanitize("unsigned-integer-overflow"))) +#endif +get_file_id_hash(const char *data, size_t lendata, + char *const hash_str, const size_t len_hash_str) +{ + assert(len_hash_str >= 17); /* we always generate 8-byte strings */ + + size_t i; + uint8_t out[8], k[16]; + for (i = 0; i < 16; ++i) + k[i] = i; + memset(out, 0, sizeof(out)); + rs_siphash((const uint8_t *)data, lendata, k, out, 8); + + for(i = 0 ; i < 8 ; ++i) { + if(2 * i+1 >= len_hash_str) + break; + snprintf(hash_str+(2*i), 3, "%2.2x", out[i]); + } +} + + +/* this returns the file-id for a given file + */ +static void ATTR_NONNULL(1) +getFileID(act_obj_t *const act) +{ + char tmp_id[FILE_ID_HASH_SIZE]; + strncpy(tmp_id, (const char*)act->file_id, FILE_ID_HASH_SIZE); + act->file_id[0] = '\0'; + assert(act->fd >= 0); /* fd must have been opened at act_obj_t creation! */ + char filedata[FILE_ID_SIZE]; + lseek(act->fd, 0, SEEK_SET); /* Seek to beginning of file so we have correct id */ + const int r = read(act->fd, filedata, FILE_ID_SIZE); + if(r == FILE_ID_SIZE) { + get_file_id_hash(filedata, sizeof(filedata), act->file_id, sizeof(act->file_id)); + } else { + DBGPRINTF("getFileID partial or error read, ret %d\n", r); + } + if (strncmp(tmp_id, act->file_id, FILE_ID_HASH_SIZE)) {/* save the old id for cleaning purposes */ + strncpy(act->file_id_prev, tmp_id, FILE_ID_HASH_SIZE); + } + DBGPRINTF("getFileID for '%s', file_id_hash '%s'\n", act->name, act->file_id); +} + +/* this generates a state file name suitable for the given file. To avoid + * malloc calls, it must be passed a buffer which should be MAXFNAME large. + * Note: the buffer is not necessarily populated ... always ONLY use the + * RETURN VALUE! + * This function is guranteed to work only on config data and DOES NOT + * open or otherwise modify disk file state. + */ +static uchar * ATTR_NONNULL(1, 2) +getStateFileName(const act_obj_t *const act, + uchar *const __restrict__ buf, + const size_t lenbuf) +{ + DBGPRINTF("getStateFileName for '%s'\n", act->name); + snprintf((char*)buf, lenbuf - 1, "imfile-state:%lld", (long long) act->ino); + DBGPRINTF("getStateFileName: state file name now is %s\n", buf); + return buf; +} + +static rsRetVal +checkPerMinuteRateLimits(per_minute_rate_limit_t *per_minute_rate_limits, + const size_t msgLen) +{ + DEFiRet; + time_t current_minute = time(NULL)/60; + if(per_minute_rate_limits->maxBytesPerMinute) { + if (per_minute_rate_limits->rateLimitingMinute == current_minute) { + per_minute_rate_limits->bytesThisMinute += msgLen; + /* if we would breach our rate limit then do not send the message. */ + if (per_minute_rate_limits->bytesThisMinute > per_minute_rate_limits->maxBytesPerMinute) { + ABORT_FINALIZE(RS_RET_RATE_LIMITED); + } + } else { + per_minute_rate_limits->rateLimitingMinute = current_minute; + per_minute_rate_limits->bytesThisMinute = msgLen; /* Update count as message will be sent */ + } + } + if(per_minute_rate_limits->maxLinesPerMinute) { + if (per_minute_rate_limits->rateLimitingMinute == current_minute) { + per_minute_rate_limits->linesThisMinute++; + /* if we would breach our rate limit then do not send the message. */ + if (per_minute_rate_limits->linesThisMinute > per_minute_rate_limits->maxLinesPerMinute) { + ABORT_FINALIZE(RS_RET_RATE_LIMITED); + } + } else { + per_minute_rate_limits->rateLimitingMinute = current_minute; + per_minute_rate_limits->linesThisMinute = 1; /* Update count as message will be sent */ + } + } +finalize_it: + RETiRet; +} + +/* enqueue the read file line as a message. The provided string is + * not freed - this must be done by the caller. + */ +#define MAX_OFFSET_REPRESENTATION_NUM_BYTES 20 +static rsRetVal ATTR_NONNULL(1,2) +enqLine(act_obj_t *const act, + cstr_t *const __restrict__ cstrLine, + const int64 strtOffs) +{ + DEFiRet; + const instanceConf_t *const inst = act->edge->instarr[0];// TODO: same file, multiple instances? + smsg_t *pMsg; + uchar file_offset[MAX_OFFSET_REPRESENTATION_NUM_BYTES+1]; + const uchar *metadata_names[2] = {(uchar *)"filename",(uchar *)"fileoffset"} ; + const uchar *metadata_values[2] ; + const size_t msgLen = cstrLen(cstrLine); + + if(msgLen == 0) { + /* we do not process empty lines */ + FINALIZE; + } + + CHKiRet(msgConstruct(&pMsg)); + MsgSetFlowControlType(pMsg, eFLOWCTL_FULL_DELAY); + MsgSetInputName(pMsg, pInputName); + if(inst->addCeeTag) { + /* Make sure we account for terminating null byte */ + size_t ceeMsgSize = msgLen + CONST_LEN_CEE_COOKIE + 1; + char *ceeMsg; + CHKmalloc(ceeMsg = malloc(ceeMsgSize)); + strcpy(ceeMsg, CONST_CEE_COOKIE); + strcat(ceeMsg, (char*)rsCStrGetSzStrNoNULL(cstrLine)); + MsgSetRawMsg(pMsg, ceeMsg, ceeMsgSize); + free(ceeMsg); + } else { + MsgSetRawMsg(pMsg, (char*)rsCStrGetSzStrNoNULL(cstrLine), msgLen); + } + MsgSetMSGoffs(pMsg, 0); /* we do not have a header... */ + MsgSetHOSTNAME(pMsg, glbl.GetLocalHostName(), ustrlen(glbl.GetLocalHostName())); + MsgSetTAG(pMsg, inst->pszTag, inst->lenTag); + msgSetPRI(pMsg, inst->iFacility | inst->iSeverity); + MsgSetRuleset(pMsg, inst->pBindRuleset); + if(inst->addMetadata) { + if (act->source_name) { + metadata_values[0] = (const uchar*)act->source_name; + } else { + metadata_values[0] = (const uchar*)act->name; + } + snprintf((char *)file_offset, MAX_OFFSET_REPRESENTATION_NUM_BYTES+1, "%lld", strtOffs); + metadata_values[1] = file_offset; + msgAddMultiMetadata(pMsg, metadata_names, metadata_values, 2); + } + + if(inst->perMinuteRateLimits.maxBytesPerMinute || inst->perMinuteRateLimits.maxLinesPerMinute) { + CHKiRet(checkPerMinuteRateLimits((per_minute_rate_limit_t *)&inst->perMinuteRateLimits, msgLen)); + } + + if(inst->delay_perMsg) { + srSleep(inst->delay_perMsg % 1000000, inst->delay_perMsg / 1000000); + } + + pMsg->msgFlags = pMsg->msgFlags | inst->msgFlag; + + ratelimitAddMsg(act->ratelimiter, &act->multiSub, pMsg); +finalize_it: + RETiRet; +} +/* try to open a file which has a state file. If the state file does not + * exist or cannot be read, an error is returned. + */ +static rsRetVal ATTR_NONNULL(1) +openFileWithStateFile(act_obj_t *const act) +{ + DEFiRet; + uchar pszSFNam[MAXFNAME]; + uchar statefile[MAXFNAME]; + int fd = -1; + const instanceConf_t *const inst = act->edge->instarr[0];// TODO: same file, multiple instances? + + uchar *const statefn = getStateFileName(act, statefile, sizeof(statefile)); + getFileID(act); + + getFullStateFileName(statefn, act->file_id, pszSFNam, sizeof(pszSFNam)); + DBGPRINTF("trying to open state for '%s', state file '%s'\n", act->name, pszSFNam); + + /* check if the file exists */ + fd = open((char*)pszSFNam, O_CLOEXEC | O_NOCTTY | O_RDONLY, 0600); + if(fd < 0) { + if(errno == ENOENT) { + if(act->file_id[0] != '\0') { + DBGPRINTF("state file %s for %s does not exist - trying to see if " + "inode-only file exists\n", pszSFNam, act->name); + getFullStateFileName(statefn, "", pszSFNam, sizeof(pszSFNam)); + fd = open((char*)pszSFNam, O_CLOEXEC | O_NOCTTY | O_RDONLY, 0600); + if(fd >= 0) { + dbgprintf("found inode-only state file, will be renamed at next persist\n"); + } + } + if(fd < 0) { + DBGPRINTF("state file %s for %s does not exist - trying to see if " + "old-style file exists\n", pszSFNam, act->name); + CHKiRet(OLD_openFileWithStateFile(act)); + FINALIZE; + } + } else { + LogError(errno, RS_RET_IO_ERROR, + "imfile error trying to access state file for '%s'", + act->name); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + } + + DBGPRINTF("opened state file %s for %s\n", pszSFNam, act->name); + CHKiRet(strm.Construct(&act->pStrm)); + + struct json_object *jval; + struct json_object *json = fjson_object_from_fd(fd); + if(json == NULL) { + LogError(0, RS_RET_ERR, "imfile: error reading state file for '%s'", act->name); + } + + /* we access some data items a bit dirty, as we need to refactor the whole + * thing in any case - TODO + */ + /* Note: we ignore filname property - it is just an aid to the user. Most + * importantly it *is wrong* after a file move! + */ + fjson_object_object_get_ex(json, "prev_was_nl", &jval); + act->pStrm->bPrevWasNL = fjson_object_get_int(jval); + + fjson_object_object_get_ex(json, "curr_offs", &jval); + act->pStrm->iCurrOffs = fjson_object_get_int64(jval); + + fjson_object_object_get_ex(json, "strt_offs", &jval); + act->pStrm->strtOffs = fjson_object_get_int64(jval); + + fjson_object_object_get_ex(json, "prev_line_segment", &jval); + const uchar *const prev_line_segment = (const uchar*)fjson_object_get_string(jval); + if(jval != NULL) { + CHKiRet(rsCStrConstructFromszStr(&act->pStrm->prevLineSegment, prev_line_segment)); + cstrFinalize(act->pStrm->prevLineSegment); + uchar *ret = rsCStrGetSzStrNoNULL(act->pStrm->prevLineSegment); + DBGPRINTF("prev_line_segment present in state file 2, is: %s\n", ret); + } + + fjson_object_object_get_ex(json, "prev_msg_segment", &jval); + const uchar *const prev_msg_segment = (const uchar*)fjson_object_get_string(jval); + if(jval != NULL) { + CHKiRet(rsCStrConstructFromszStr(&act->pStrm->prevMsgSegment, prev_msg_segment)); + cstrFinalize(act->pStrm->prevMsgSegment); + uchar *ret = rsCStrGetSzStrNoNULL(act->pStrm->prevMsgSegment); + DBGPRINTF("prev_msg_segment present in state file 2, is: %s\n", ret); + } + fjson_object_put(json); + + CHKiRet(strm.SetFName(act->pStrm, (uchar*)act->name, strlen(act->name))); + CHKiRet(strm.SettOperationsMode(act->pStrm, STREAMMODE_READ)); + CHKiRet(strm.SetsType(act->pStrm, STREAMTYPE_FILE_MONITOR)); + CHKiRet(strm.SetFileNotFoundError(act->pStrm, inst->fileNotFoundError)); + CHKiRet(strm.ConstructFinalize(act->pStrm)); + + CHKiRet(strm.SeekCurrOffs(act->pStrm)); + +finalize_it: + if(fd >= 0) { + close(fd); + } + RETiRet; +} + +/* try to open a file for which no state file exists. This function does NOT + * check if a state file actually exists or not -- this must have been + * checked before calling it. + */ +static rsRetVal +openFileWithoutStateFile(act_obj_t *const act) +{ + DEFiRet; + const instanceConf_t *const inst = act->edge->instarr[0];// TODO: same file, multiple instances? + + DBGPRINTF("clean startup withOUT state file for '%s'\n", act->name); + if(act->pStrm != NULL) + strm.Destruct(&act->pStrm); + CHKiRet(strm.Construct(&act->pStrm)); + CHKiRet(strm.SettOperationsMode(act->pStrm, STREAMMODE_READ)); + CHKiRet(strm.SetsType(act->pStrm, STREAMTYPE_FILE_MONITOR)); + CHKiRet(strm.SetFName(act->pStrm, (uchar*)act->name, strlen(act->name))); + CHKiRet(strm.SetFileNotFoundError(act->pStrm, inst->fileNotFoundError)); + CHKiRet(strm.ConstructFinalize(act->pStrm)); + + /* As a state file not exist, this is a fresh start. seek to file end + * when freshStartTail is on. + */ + if(inst->freshStartTail) { + const int fd = open(act->name, O_RDONLY | O_CLOEXEC); + if(fd >= 0) { + act->pStrm->iCurrOffs = lseek64(fd, 0, SEEK_END); + close(fd); + if(act->pStrm->iCurrOffs < 0) { + act->pStrm->iCurrOffs = 0; + LogError(errno, RS_RET_ERR, "imfile: could not query current " + "file size for %s - 'freshStartTail' option will " + "be ignored, starting at begin of file", inst->pszFileName); + } + CHKiRet(strm.SeekCurrOffs(act->pStrm)); + } + } + +finalize_it: + RETiRet; +} + +/* try to open a file. This involves checking if there is a status file and, + * if so, reading it in. Processing continues from the last known location. + */ +static rsRetVal +openFile(act_obj_t *const act) +{ + DEFiRet; + const instanceConf_t *const inst = act->edge->instarr[0];// TODO: same file, multiple instances? + + CHKiRet_Hdlr(openFileWithStateFile(act)) { + CHKiRet(openFileWithoutStateFile(act)); + } + + DBGPRINTF("breopenOnTruncate %d for '%s'\n", inst->reopenOnTruncate, act->name); + CHKiRet(strm.SetbReopenOnTruncate(act->pStrm, inst->reopenOnTruncate)); + strmSetReadTimeout(act->pStrm, inst->readTimeout); + +finalize_it: + RETiRet; +} + + +/* The following is a cancel cleanup handler for strmReadLine(). It is necessary in case + * strmReadLine() is cancelled while processing the stream. -- rgerhards, 2008-03-27 + */ +static void pollFileCancelCleanup(void *pArg) +{ + cstr_t **ppCStr = (cstr_t**) pArg; + if(*ppCStr != NULL) + rsCStrDestruct(ppCStr); +} + + +/* pollFile needs to be split due to the unfortunate pthread_cancel_push() macros. */ +static rsRetVal ATTR_NONNULL() +pollFileReal(act_obj_t *act, cstr_t **pCStr) +{ + int64 strtOffs; + DEFiRet; + int64_t startOffs = 0; + int nProcessed = 0; + regex_t *start_preg = NULL, *end_preg = NULL; + + DBGPRINTF("pollFileReal enter, act %p, pStrm %p, name '%s'\n", act, act->pStrm, act->name); + DBGPRINTF("pollFileReal enter, edge %p\n", act->edge); + DBGPRINTF("pollFileReal enter, edge->instarr %p\n", act->edge->instarr); + + instanceConf_t *const inst = act->edge->instarr[0];// TODO: same file, multiple instances? + + if(act->pStrm == NULL) { + CHKiRet(openFile(act)); /* open file */ + } + + start_preg = (inst->startRegex == NULL) ? NULL : &inst->start_preg; + end_preg = (inst->endRegex == NULL) ? NULL : &inst->end_preg; + + startOffs = act->pStrm->iCurrOffs; + /* loop below will be exited when strmReadLine() returns EOF */ + while(glbl.GetGlobalInputTermState() == 0) { + if(inst->maxLinesAtOnce != 0 && nProcessed >= inst->maxLinesAtOnce) + break; + if((start_preg == NULL) && (end_preg == NULL)) { + CHKiRet(strm.ReadLine(act->pStrm, pCStr, inst->readMode, inst->escapeLF, inst->escapeLFString, + inst->trimLineOverBytes, &strtOffs)); + } else { + CHKiRet(strmReadMultiLine(act->pStrm, pCStr, start_preg, end_preg, + inst->escapeLF, inst->escapeLFString, inst->discardTruncatedMsg, + inst->msgDiscardingError, &strtOffs)); + } + ++nProcessed; + if(startOffs < FILE_ID_SIZE && act->pStrm->iCurrOffs >= FILE_ID_SIZE) { + dbgprintf("initiating state file write as sufficient data is now present; file=%s\n", + act->name); + persistStrmState(act); + startOffs = act->pStrm->iCurrOffs; /* disable check */ + } + runModConf->bHadFileData = 1; /* this is just a flag, so set it and forget it */ + CHKiRet(enqLine(act, *pCStr, strtOffs)); /* process line */ + rsCStrDestruct(pCStr); /* discard string (must be done by us!) */ + if(inst->iPersistStateInterval > 0 && ++act->nRecords >= inst->iPersistStateInterval) { + persistStrmState(act); + act->nRecords = 0; + } + } + +finalize_it: + multiSubmitFlush(&act->multiSub); + if(inst->bPersistStateAfterSubmission) { + persistStrmState(act); + } + + if(*pCStr != NULL) { + rsCStrDestruct(pCStr); + } + + RETiRet; +} + +/* poll a file, need to check file rollover etc. open file if not open */ +static rsRetVal ATTR_NONNULL(1) +pollFile(act_obj_t *const act) +{ + cstr_t *pCStr = NULL; + DEFiRet; + if (act->is_symlink) { + FINALIZE; /* no reason to poll symlink file */ + } + /* Note: we must do pthread_cleanup_push() immediately, because the POSIX macros + * otherwise do not work if I include the _cleanup_pop() inside an if... -- rgerhards, 2008-08-14 + */ + pthread_cleanup_push(pollFileCancelCleanup, &pCStr); + iRet = pollFileReal(act, &pCStr); + pthread_cleanup_pop(0); +finalize_it: RETiRet; +} + + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal ATTR_NONNULL(1) +createInstance(instanceConf_t **const pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->next = NULL; + inst->pBindRuleset = NULL; + + inst->pszBindRuleset = NULL; + inst->pszFileName = NULL; + inst->pszTag = NULL; + inst->pszStateFile = NULL; + inst->nMultiSub = NUM_MULTISUB; + inst->iSeverity = 5; + inst->iFacility = 128; + inst->maxLinesAtOnce = 0; + inst->trimLineOverBytes = 0; + inst->iPersistStateInterval = 0; + inst->perMinuteRateLimits.maxBytesPerMinute = 0; + inst->perMinuteRateLimits.maxLinesPerMinute = 0; + inst->perMinuteRateLimits.rateLimitingMinute = 0; + inst->perMinuteRateLimits.linesThisMinute = 0; + inst->perMinuteRateLimits.bytesThisMinute = 0; + inst->bPersistStateAfterSubmission = 0; + inst->readMode = 0; + inst->startRegex = NULL; + inst->endRegex = NULL; + inst->discardTruncatedMsg = 0; + inst->msgDiscardingError = 1; + inst->bRMStateOnDel = 1; + inst->escapeLF = 1; + inst->escapeLFString = NULL; + inst->reopenOnTruncate = 0; + inst->addMetadata = ADD_METADATA_UNSPECIFIED; + inst->addCeeTag = 0; + inst->freshStartTail = 0; + inst->fileNotFoundError = 1; + inst->readTimeout = loadModConf->readTimeout; + inst->delay_perMsg = 0; + inst->msgFlag = 0; + inst->ignoreOlderThan = 0; + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = inst; + } else { + loadModConf->tail->next = inst; + loadModConf->tail = inst; + } + + *pinst = inst; +finalize_it: + RETiRet; +} + + +/* the basen(ame) buffer must be of size MAXFNAME + * returns the index of the slash in front of basename + */ +static int ATTR_NONNULL() +getBasename(uchar *const __restrict__ basen, uchar *const __restrict__ path) +{ + int i; + int found = 0; + const int lenName = ustrlen(path); + for(i = lenName ; i >= 0 ; --i) { + if(path[i] == '/') { + /* found basename component */ + found = 1; + if(i == lenName) + basen[0] = '\0'; + else { + memcpy(basen, path+i+1, lenName-i); + } + break; + } + } + if (found == 1) + return i; + else { + return -1; + } +} + +/* this function checks instance parameters and does some required pre-processing + */ +static rsRetVal ATTR_NONNULL() +checkInstance(instanceConf_t *const inst) +{ + uchar curr_wd[MAXFNAME]; + DEFiRet; + + /* this is primarily for the clang static analyzer, but also + * guards against logic errors in the config handler. + */ + if(inst->pszFileName == NULL) + ABORT_FINALIZE(RS_RET_INTERNAL_ERROR); + + CHKmalloc(inst->pszFileName_forOldStateFile = ustrdup(inst->pszFileName)); + if(loadModConf->normalizePath) { + if(inst->pszFileName[0] == '.' && inst->pszFileName[1] == '/') { + DBGPRINTF("imfile: removing heading './' from name '%s'\n", inst->pszFileName); + memmove(inst->pszFileName, inst->pszFileName+2, ustrlen(inst->pszFileName) - 1); + } + + if(inst->pszFileName[0] != '/') { + if(getcwd((char*)curr_wd, MAXFNAME) == NULL || curr_wd[0] != '/') { + LogError(errno, RS_RET_ERR, "imfile: error querying current working " + "directory - can not continue with %s", inst->pszFileName); + ABORT_FINALIZE(RS_RET_ERR); + } + const size_t len_curr_wd = ustrlen(curr_wd); + if(len_curr_wd + ustrlen(inst->pszFileName) + 1 >= MAXFNAME) { + LogError(0, RS_RET_ERR, "imfile: length of configured file and current " + "working directory exceeds permitted size - ignoring %s", + inst->pszFileName); + ABORT_FINALIZE(RS_RET_ERR); + } + curr_wd[len_curr_wd] = '/'; + strcpy((char*)curr_wd+len_curr_wd+1, (char*)inst->pszFileName); + free(inst->pszFileName); + CHKmalloc(inst->pszFileName = ustrdup(curr_wd)); + } + } + dbgprintf("imfile: adding file monitor for '%s'\n", inst->pszFileName); + + if(inst->pszTag != NULL) { + inst->lenTag = ustrlen(inst->pszTag); + } +finalize_it: + RETiRet; +} + + +/* add a new monitor */ +static rsRetVal +addInstance(void __attribute__((unused)) *pVal, uchar *pNewVal) +{ + instanceConf_t *inst; + DEFiRet; + + if(cs.pszFileName == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, "imfile error: no file name given, file monitor can " + "not be created"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + if(cs.pszFileTag == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, "imfile error: no tag value given, file monitor can " + "not be created"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + + CHKiRet(createInstance(&inst)); + if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) { + inst->pszBindRuleset = NULL; + } else { + CHKmalloc(inst->pszBindRuleset = ustrdup(cs.pszBindRuleset)); + } + CHKmalloc(inst->pszFileName = ustrdup((char*) cs.pszFileName)); + CHKmalloc(inst->pszTag = ustrdup((char*) cs.pszFileTag)); + if(cs.pszStateFile == NULL) { + inst->pszStateFile = NULL; + } else { + CHKmalloc(inst->pszStateFile = ustrdup(cs.pszStateFile)); + } + inst->iSeverity = cs.iSeverity; + inst->iFacility = cs.iFacility; + if(cs.maxLinesAtOnce) { + if(loadModConf->opMode == OPMODE_INOTIFY) { + LogError(0, RS_RET_PARAM_NOT_PERMITTED, + "parameter \"maxLinesAtOnce\" not " + "permited in inotify mode - ignored"); + } else { + inst->maxLinesAtOnce = cs.maxLinesAtOnce; + } + } + inst->trimLineOverBytes = cs.trimLineOverBytes; + inst->ignoreOlderThan = 0; + inst->iPersistStateInterval = cs.iPersistStateInterval; + inst->perMinuteRateLimits.maxBytesPerMinute = cs.maxBytesPerMinute; + inst->perMinuteRateLimits.maxLinesPerMinute = cs.maxLinesPerMinute; + inst->bPersistStateAfterSubmission = 0; + inst->readMode = cs.readMode; + inst->escapeLF = 0; + inst->escapeLFString = NULL; + inst->reopenOnTruncate = 0; + inst->addMetadata = 0; + inst->addCeeTag = 0; + inst->bRMStateOnDel = 0; + inst->readTimeout = loadModConf->readTimeout; + inst->msgFlag = 0; + + CHKiRet(checkInstance(inst)); + + /* reset legacy system */ + cs.iPersistStateInterval = 0; + resetConfigVariables(NULL, NULL); /* values are both dummies */ + +finalize_it: + free(pNewVal); /* we do not need it, but we must free it! */ + RETiRet; +} + + +BEGINnewInpInst + struct cnfparamvals *pvals; + instanceConf_t *inst; + int i; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imfile)\n"); + + pvals = nvlstGetParams(lst, &inppblk, NULL); + if(pvals == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + DBGPRINTF("input param blk in imfile:\n"); + cnfparamsPrint(&inppblk, pvals); + } + + CHKiRet(createInstance(&inst)); + + for(i = 0 ; i < inppblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(inppblk.descr[i].name, "file")) { + inst->pszFileName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "statefile")) { + inst->pszStateFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "removestateondelete")) { + inst->bRMStateOnDel = (uint8_t) pvals[i].val.d.n; // TODO: duplicate! + } else if(!strcmp(inppblk.descr[i].name, "tag")) { + inst->pszTag = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "severity")) { + inst->iSeverity = pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "facility")) { + inst->iFacility = pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "readmode")) { + inst->readMode = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "startmsg.regex")) { + inst->startRegex = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "endmsg.regex")) { + inst->endRegex = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "discardtruncatedmsg")) { + inst->discardTruncatedMsg = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "msgdiscardingerror")) { + inst->msgDiscardingError = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "deletestateonfiledelete")) { + inst->bRMStateOnDel = (sbool) pvals[i].val.d.n; // TODO: duplicate! + } else if(!strcmp(inppblk.descr[i].name, "addmetadata")) { + inst->addMetadata = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "delay.message")) { + inst->delay_perMsg = (unsigned) pvals[i].val.d.n; + } else if (!strcmp(inppblk.descr[i].name, "addceetag")) { + inst->addCeeTag = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "freshstarttail")) { + inst->freshStartTail = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "filenotfounderror")) { + inst->fileNotFoundError = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "escapelf")) { + inst->escapeLF = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "escapelf.replacement")) { + inst->escapeLFString = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "reopenontruncate")) { + inst->reopenOnTruncate = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "maxlinesatonce")) { + if( loadModConf->opMode == OPMODE_INOTIFY + && pvals[i].val.d.n > 0) { + LogError(0, RS_RET_PARAM_NOT_PERMITTED, + "parameter \"maxLinesAtOnce\" not " + "permited in inotify mode - ignored"); + } else { + inst->maxLinesAtOnce = pvals[i].val.d.n; + } + } else if(!strcmp(inppblk.descr[i].name, "trimlineoverbytes")) { + inst->trimLineOverBytes = pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ignoreolderthan")) { + inst->ignoreOlderThan = pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "persiststateinterval")) { + inst->iPersistStateInterval = pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "maxbytesperminute")) { + DBGPRINTF("imfile: enabling maxbytesperminute ratelimiting\n"); + inst->perMinuteRateLimits.maxBytesPerMinute = pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "maxlinesperminute")) { + DBGPRINTF("imfile: enabling maxlinesperminute ratelimiting\n"); + inst->perMinuteRateLimits.maxLinesPerMinute = pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "persiststateaftersubmission")) { + inst->bPersistStateAfterSubmission = pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "maxsubmitatonce")) { + inst->nMultiSub = pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "readtimeout")) { + inst->readTimeout = pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "needparse")) { + inst->msgFlag = pvals[i].val.d.n ? NEEDS_PARSING : 0; + } else { + DBGPRINTF("program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + } + i = (inst->readMode > 0) ? 1 : 0; + i = (NULL != inst->startRegex) ? (i+1) : i; + i = (NULL != inst->endRegex) ? (i+1) : i; + if(i > 1) { + LogError(0, RS_RET_PARAM_NOT_PERMITTED, + "only one of readMode or startmsg.regex or endmsg.regex can be set " + "at the same time"); + ABORT_FINALIZE(RS_RET_PARAM_NOT_PERMITTED); + } + + if(inst->startRegex != NULL) { + const int errcode = regcomp(&inst->start_preg, (char*)inst->startRegex, REG_EXTENDED); + if(errcode != 0) { + char errbuff[512]; + regerror(errcode, &inst->start_preg, errbuff, sizeof(errbuff)); + parser_errmsg("imfile: error in startmsg.regex expansion: %s", errbuff); + ABORT_FINALIZE(RS_RET_ERR); + } + } + if(inst->endRegex != NULL) { + const int errcode = regcomp(&inst->end_preg, (char*)inst->endRegex, REG_EXTENDED); + if(errcode != 0) { + char errbuff[512]; + regerror(errcode, &inst->end_preg, errbuff, sizeof(errbuff)); + parser_errmsg("imfile: error in endmsg.regex expansion: %s", errbuff); + ABORT_FINALIZE(RS_RET_ERR); + } + } + if(inst->readTimeout != 0) + loadModConf->haveReadTimeouts = 1; + iRet = checkInstance(inst); +finalize_it: +CODE_STD_FINALIZERnewInpInst + cnfparamvalsDestruct(pvals, &inppblk); +ENDnewInpInst + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + currModConf = pModConf; + pModConf->pConf = pConf; + /* init our settings */ + loadModConf->opMode = OPMODE_POLLING; + loadModConf->iPollInterval = DFLT_PollInterval; + loadModConf->configSetViaV2Method = 0; + loadModConf->readTimeout = 0; /* default: no timeout */ + loadModConf->timeoutGranularity = 1000; /* default: 1 second */ + loadModConf->haveReadTimeouts = 0; /* default: no timeout */ + loadModConf->normalizePath = 1; + loadModConf->sortFiles = GLOB_NOSORT; + loadModConf->stateFileDirectory = NULL; + loadModConf->conf_tree = calloc(sizeof(fs_node_t), 1); + loadModConf->conf_tree->edges = NULL; + bLegacyCnfModGlobalsPermitted = 1; + /* init legacy config vars */ + cs.pszFileName = NULL; + cs.pszFileTag = NULL; + cs.pszStateFile = NULL; + cs.iPollInterval = DFLT_PollInterval; + cs.iPersistStateInterval = 0; + cs.iFacility = 128; + cs.iSeverity = 5; + cs.readMode = 0; + cs.maxLinesAtOnce = 10240; + cs.trimLineOverBytes = 0; +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + #if defined(HAVE_PORT_SOURCE_FILE) + /* this means we are on Solaris, so inotify is not there */ + loadModConf->opMode = OPMODE_FEN; + #elif defined(HAVE_INOTIFY_INIT) + loadModConf->opMode = OPMODE_INOTIFY; + #else + loadModConf->opMode = OPMODE_POLLING; + #endif + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "imfile: error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + DBGPRINTF("module (global) param blk for imfile:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "pollinginterval")) { + loadModConf->iPollInterval = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "readtimeout")) { + loadModConf->readTimeout = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "timeoutgranularity")) { + /* note: we need ms, thus "* 1000" */ + loadModConf->timeoutGranularity = (int) pvals[i].val.d.n * 1000; + } else if(!strcmp(modpblk.descr[i].name, "sortfiles")) { + loadModConf->sortFiles = ((sbool) pvals[i].val.d.n) ? 0 : GLOB_NOSORT; + } else if(!strcmp(modpblk.descr[i].name, "statefile.directory")) { + loadModConf->stateFileDirectory = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "normalizepath")) { + loadModConf->normalizePath = (sbool) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "mode")) { + if(!es_strconstcmp(pvals[i].val.d.estr, "polling")) + loadModConf->opMode = OPMODE_POLLING; + else if(!es_strconstcmp(pvals[i].val.d.estr, "inotify")) { +#if defined(OS_SOLARIS) && defined (HAVE_PORT_SOURCE_FILE) /* use FEN on Solaris! */ + loadModConf->opMode = OPMODE_FEN; + DBGPRINTF("inotify mode configured, but only FEN " + "is available on OS SOLARIS. Switching to FEN " + "Mode automatically\n"); +#else + #if defined(HAVE_INOTIFY_INIT) + loadModConf->opMode = OPMODE_INOTIFY; + #else + loadModConf->opMode = OPMODE_POLLING; + #endif +#endif + } else if(!es_strconstcmp(pvals[i].val.d.estr, "fen")) + loadModConf->opMode = OPMODE_FEN; + else { + char *cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + LogError(0, RS_RET_PARAM_ERROR, "imfile: unknown " + "mode '%s'", cstr); + free(cstr); + } + } else { + DBGPRINTF("program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + + /* remove all of our legacy handlers, as they can not used in addition + * the the new-style config method. + */ + bLegacyCnfModGlobalsPermitted = 0; + loadModConf->configSetViaV2Method = 1; + +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(!loadModConf->configSetViaV2Method) { + /* persist module-specific settings from legacy config system */ + loadModConf->iPollInterval = cs.iPollInterval; + } + DBGPRINTF("opmode is %d, polling interval is %d\n", + loadModConf->opMode, + loadModConf->iPollInterval); + + loadModConf = NULL; /* done loading */ + /* free legacy config vars */ + free(cs.pszFileName); + free(cs.pszFileTag); + free(cs.pszStateFile); +ENDendCnfLoad + + +BEGINcheckCnf + instanceConf_t *inst; +CODESTARTcheckCnf + if(getStateFileDir() == NULL) { + /* this intentionally is an error message */ + LogError(0, RS_RET_NO_WRKDIR_SET, + "imfile: no working or state file directory set, imfile will create " + "state files in the current working directory (probably " + "the root dir). Use global(workDirectory=\"/some/path\") " + "to set the working directory"); + } + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + std_checkRuleset(pModConf, inst); + } + if(pModConf->root == NULL) { + LogError(0, RS_RET_NO_LISTNERS, + "imfile: no files configured to be monitored - " + "no input will be gathered"); + iRet = RS_RET_NO_LISTNERS; + } +ENDcheckCnf + + +/* note: we do access files AFTER we have dropped privileges. This is + * intentional, user must make sure the files have the right permissions. + */ +BEGINactivateCnf + instanceConf_t *inst; +CODESTARTactivateCnf + runModConf = pModConf; + currModConf = pModConf; + if(runModConf->root == NULL) { + LogError(0, NO_ERRCODE, "imfile: no file monitors configured, " + "input not activated.\n"); + ABORT_FINALIZE(RS_RET_NO_RUN); + } + + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + // TODO: provide switch to turn off this warning? + if(!containsGlobWildcard((char*)inst->pszFileName)) { + if(access((char*)inst->pszFileName, R_OK) != 0) { + LogError(errno, RS_RET_ERR, + "imfile: on startup file '%s' does not exist " + "but is configured in static file monitor - this " + "may indicate a misconfiguration. If the file " + "appears at a later time, it will automatically " + "be processed. Reason", inst->pszFileName); + } + } + fs_node_add(runModConf->conf_tree, NULL, inst->pszFileName, 0, inst); + } + + if(Debug) { + fs_node_print(runModConf->conf_tree, 0); + } + +finalize_it: +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; +CODESTARTfreeCnf + fs_node_destroy(pModConf->conf_tree); + for(inst = pModConf->root ; inst != NULL ; ) { + free(inst->pszBindRuleset); + free(inst->pszFileName); + free(inst->pszTag); + free(inst->pszStateFile); + free(inst->pszFileName_forOldStateFile); + if(inst->startRegex != NULL) { + regfree(&inst->start_preg); + free(inst->startRegex); + } + if(inst->endRegex != NULL) { + regfree(&inst->end_preg); + free(inst->endRegex); + } + del = inst; + inst = inst->next; + free(del); + } +ENDfreeCnf + + +/* initial poll run, to be used for all modes. Depending on mode, it does some + * further initializations (e.g. watches in inotify mode). Most importantly, + * it processes already-existing files, which would not otherwise be picked + * up in notifcation modes (inotfiy, FEN). Also, when freshStartTail is set, + * this run assumes that all previous existing data exists and needs not + * to be considered. + * Note: there is a race on files created *during* the run, but that race is + * inevitable (and thus freshStartTail is actually broken, but users still seem + * to want it...). + * rgerhards, 2018-05-17 + */ +static void +do_initial_poll_run(void) +{ + fs_node_walk(runModConf->conf_tree, poll_tree); + + /* fresh start done, so disable freshStartTail for files that now will be created */ + for(instanceConf_t *inst = runModConf->root ; inst != NULL ; inst = inst->next) { + inst->freshStartTail = 0; + } +} + + +/* Monitor files in polling mode. */ +static rsRetVal +doPolling(void) +{ + DEFiRet; + do_initial_poll_run(); + while(glbl.GetGlobalInputTermState() == 0) { + DBGPRINTF("doPolling: new poll run\n"); + do { + runModConf->bHadFileData = 0; + fs_node_walk(runModConf->conf_tree, poll_tree); + DBGPRINTF("doPolling: end poll walk, hadData %d\n", runModConf->bHadFileData); + } while(runModConf->bHadFileData); /* warning: do...while()! */ + + /* Note: the additional 10ns wait is vitally important. It guards rsyslog + * against totally hogging the CPU if the users selects a polling interval + * of 0 seconds. It doesn't hurt any other valid scenario. So do not remove. + * rgerhards, 2008-02-14 + */ + DBGPRINTF("doPolling: poll going to sleep\n"); + if(glbl.GetGlobalInputTermState() == 0) + srSleep(runModConf->iPollInterval, 10); + } + + RETiRet; +} + +#if defined(HAVE_INOTIFY_INIT) + +static void ATTR_NONNULL(1) +in_dbg_showEv(const struct inotify_event *ev) +{ + if(!Debug) + return; + if(ev->mask & IN_IGNORED) { + dbgprintf("INOTIFY event: watch was REMOVED\n"); + } + if(ev->mask & IN_MODIFY) { + dbgprintf("INOTIFY event: watch was MODIFID\n"); + } + if(ev->mask & IN_ACCESS) { + dbgprintf("INOTIFY event: watch IN_ACCESS\n"); + } + if(ev->mask & IN_ATTRIB) { + dbgprintf("INOTIFY event: watch IN_ATTRIB\n"); + } + if(ev->mask & IN_CLOSE_WRITE) { + dbgprintf("INOTIFY event: watch IN_CLOSE_WRITE\n"); + } + if(ev->mask & IN_CLOSE_NOWRITE) { + dbgprintf("INOTIFY event: watch IN_CLOSE_NOWRITE\n"); + } + if(ev->mask & IN_CREATE) { + dbgprintf("INOTIFY event: file was CREATED: %s\n", ev->name); + } + if(ev->mask & IN_DELETE) { + dbgprintf("INOTIFY event: watch IN_DELETE\n"); + } + if(ev->mask & IN_DELETE_SELF) { + dbgprintf("INOTIFY event: watch IN_DELETE_SELF\n"); + } + if(ev->mask & IN_MOVE_SELF) { + dbgprintf("INOTIFY event: watch IN_MOVE_SELF\n"); + } + if(ev->mask & IN_MOVED_FROM) { + dbgprintf("INOTIFY event: watch IN_MOVED_FROM, cookie %u, name '%s'\n", ev->cookie, ev->name); + } + if(ev->mask & IN_MOVED_TO) { + dbgprintf("INOTIFY event: watch IN_MOVED_TO, cookie %u, name '%s'\n", ev->cookie, ev->name); + } + if(ev->mask & IN_OPEN) { + dbgprintf("INOTIFY event: watch IN_OPEN\n"); + } + if(ev->mask & IN_ISDIR) { + dbgprintf("INOTIFY event: watch IN_ISDIR\n"); + } +} + + +static void ATTR_NONNULL(1, 2) +in_handleFileEvent(struct inotify_event *ev, const wd_map_t *const etry) +{ + if(ev->mask & IN_MODIFY) { + DBGPRINTF("fs_node_notify_file_update: act->name '%s'\n", etry->act->name); + pollFile(etry->act); + } else { + DBGPRINTF("got non-expected inotify event:\n"); + in_dbg_showEv(ev); + } +} + + +/* workaround for IN_MOVED: walk active list and prevent state file deletion of + * IN_MOVED_IN active object + * TODO: replace by a more generic solution. + */ +static void +flag_in_move(fs_edge_t *const edge, const char *name_moved) +{ + act_obj_t *act; + + for(act = edge->active ; act != NULL ; act = act->next) { + DBGPRINTF("checking active object %s\n", act->basename); + if(!strcmp(act->basename, name_moved)){ + DBGPRINTF("found file\n"); + act->in_move = 1; + break; + } else { + DBGPRINTF("name check fails, '%s' != '%s'\n", act->basename, name_moved); + } + } + if (!act && edge->next) { + flag_in_move(edge->next, name_moved); + } +} + +static void ATTR_NONNULL(1) +in_processEvent(struct inotify_event *ev) +{ + if(ev->mask & IN_IGNORED) { + DBGPRINTF("imfile: got IN_IGNORED event\n"); + goto done; + } + + DBGPRINTF("in_processEvent process Event %x for %s\n", ev->mask, ev->name); + const wd_map_t *const etry = wdmapLookup(ev->wd); + if(etry == NULL) { + LogMsg(0, RS_RET_INTERNAL_ERROR, LOG_WARNING, "imfile: internal error? " + "inotify provided watch descriptor %d which we could not find " + "in our tables - ignored", ev->wd); + goto done; + } + DBGPRINTF("in_processEvent process Event %x is_file %d, act->name '%s'\n", + ev->mask, etry->act->edge->is_file, etry->act->name); + + if((ev->mask & IN_MOVED_FROM)) { + flag_in_move(etry->act->edge->node->edges, ev->name); + } + if(ev->mask & (IN_MOVED_FROM | IN_MOVED_TO)) { + fs_node_walk(etry->act->edge->node, poll_tree); + } else if(etry->act->edge->is_file && !(etry->act->is_symlink)) { + in_handleFileEvent(ev, etry); // esentially poll_file()! + } else { + fs_node_walk(etry->act->edge->node, poll_tree); + } +done: return; +} + + +/* Monitor files in inotify mode */ +static rsRetVal +do_inotify(void) +{ + char iobuf[8192]; + int rd; + int currev; + static int last_timeout = 0; + struct pollfd pollfd; + DEFiRet; + + CHKiRet(wdmapInit()); + ino_fd = inotify_init1(IN_NONBLOCK); + if(ino_fd < 0) { + LogError(errno, RS_RET_INOTIFY_INIT_FAILED, "imfile: Init inotify " + "instance failed "); + return RS_RET_INOTIFY_INIT_FAILED; + } + DBGPRINTF("inotify fd %d\n", ino_fd); + + do_initial_poll_run(); + + while(glbl.GetGlobalInputTermState() == 0) { + int r; + + pollfd.fd = ino_fd; + pollfd.events = POLLIN; + + if (runModConf->haveReadTimeouts) + r = poll(&pollfd, 1, runModConf->timeoutGranularity); + else + r = poll(&pollfd, 1, -1); + + if (r == -1 && errno == EINTR) { + DBGPRINTF("do_inotify interrupted while polling on ino_fd\n"); + continue; + } + if(r == 0) { + DBGPRINTF("readTimeouts are configured, checking if some apply\n"); + if (runModConf->haveReadTimeouts) { + fs_node_walk(runModConf->conf_tree, poll_timeouts); + last_timeout = time(NULL); + } + continue; + } else if (r == -1) { + LogError(errno, RS_RET_INTERNAL_ERROR, + "%s:%d: unexpected error during poll timeout wait", + __FILE__, __LINE__); + /* we do not abort, as this would render the whole input defunct */ + continue; + } else if(r != 1) { + LogError(errno, RS_RET_INTERNAL_ERROR, + "%s:%d: ERROR: poll returned more fds (%d) than given to it (1)", + __FILE__, __LINE__, r); + /* we do not abort, as this would render the whole input defunct */ + continue; + } + else { + // process timeouts always, ino_fd may be too busy to ever have timeout occur from poll + if(runModConf->haveReadTimeouts) { + int now = time(NULL); + if(last_timeout + (runModConf->timeoutGranularity / 1000) > now) { + fs_node_walk(runModConf->conf_tree, poll_timeouts); + last_timeout = time(NULL); + } + } + rd = read(ino_fd, iobuf, sizeof(iobuf)); + if(rd == -1 && errno == EINTR) { + /* This might have been our termination signal! */ + DBGPRINTF("EINTR received during inotify, restarting poll\n"); + continue; + } + if (rd == -1 && errno == EWOULDBLOCK) { + continue; + } + if(rd < 0) { + LogError(errno, RS_RET_IO_ERROR, "imfile: error during inotify - ignored"); + continue; + } + currev = 0; + while(currev < rd) { + union { + char *buf; + struct inotify_event *ev; + } savecast; + savecast.buf = iobuf+currev; + in_dbg_showEv(savecast.ev); + in_processEvent(savecast.ev); + currev += sizeof(struct inotify_event) + savecast.ev->len; + } + } + } + +finalize_it: + close(ino_fd); + RETiRet; +} + +#else /* #if HAVE_INOTIFY_INIT */ +static rsRetVal +do_inotify(void) +{ + LogError(0, RS_RET_NOT_IMPLEMENTED, "imfile: mode set to inotify, but the " + "platform does not support inotify"); + return RS_RET_NOT_IMPLEMENTED; +} +#endif /* #if HAVE_INOTIFY_INIT */ + + +/* --- Monitor files in FEN mode (OS_SOLARIS)*/ +#if defined(OS_SOLARIS) && defined (HAVE_PORT_SOURCE_FILE) /* use FEN on Solaris! */ +static void +fen_printevent(int event) +{ + if (event & FILE_ACCESS) { + DBGPRINTF(" FILE_ACCESS"); + } + if (event & FILE_MODIFIED) { + DBGPRINTF(" FILE_MODIFIED"); + } + if (event & FILE_ATTRIB) { + DBGPRINTF(" FILE_ATTRIB"); + } + if (event & FILE_DELETE) { + DBGPRINTF(" FILE_DELETE"); + } + if (event & FILE_RENAME_TO) { + DBGPRINTF(" FILE_RENAME_TO"); + } + if (event & FILE_RENAME_FROM) { + DBGPRINTF(" FILE_RENAME_FROM"); + } + if (event & UNMOUNTED) { + DBGPRINTF(" UNMOUNTED"); + } + if (event & MOUNTEDOVER) { + DBGPRINTF(" MOUNTEDOVER"); + } +} + + +/* https://docs.oracle.com/cd/E19253-01/816-5168/port-get-3c/index.html */ +static rsRetVal +do_fen(void) +{ + port_event_t portEvent; + struct timespec timeout; + DEFiRet; + + /* Set port timeout to 1 second. We need to check for unmonitored files during meantime */ + // TODO: do we need this timeout at all for equality to old code? + // TODO: do we need it to support the timeout feature! + timeout.tv_sec = 300; + timeout.tv_nsec = 0; + + /* create port instance */ + if((glport = port_create()) == -1) { + LogError(errno, RS_RET_FEN_INIT_FAILED, "do_fen INIT Port failed "); + return RS_RET_FEN_INIT_FAILED; + } + + do_initial_poll_run(); + + DBGPRINTF("do_fen ENTER monitoring loop \n"); + while(glbl.GetGlobalInputTermState() == 0) { + DBGPRINTF("do_fen loop begin... \n"); + /* Loop through events, if there are any */ + while (!port_get(glport, &portEvent, &timeout)) { // wie inotify-wait + DBGPRINTF("do_fen: received port event with "); + fen_printevent((int) portEvent.portev_events); + DBGPRINTF("\n"); + if(portEvent.portev_source != PORT_SOURCE_FILE) { + LogError(errno, RS_RET_SYS_ERR, "do_fen: Event from unexpected source " + ": %d\n", portEvent.portev_source); + continue; + } + act_obj_t *const act = (act_obj_t*) portEvent.portev_user; + DBGPRINTF("do_fen event received: deleted %d, is_file %d, name '%s' foname '%s'\n", + act->is_deleted, act->edge->is_file, act->name, + ((struct file_obj*)portEvent.portev_object)->fo_name); + if(act->is_deleted) { + free(act->name); + free(act); + continue; + } + + /* we need to re-associate the object */ + act->bPortAssociated = 0; + fen_setupWatch(act); + + if(act->edge->is_file) { + pollFile(act); + } else { + fs_node_walk(act->edge->node, poll_tree); + } + } + } + + /* close port, will de-activate all file events watches associated + * with the port. + */ + close(glport); + RETiRet; +} +#else /* #if OS_SOLARIS */ +static rsRetVal +do_fen(void) +{ + LogError(0, RS_RET_NOT_IMPLEMENTED, "do_fen: mode set to fen, but the " + "platform does not support fen"); + return RS_RET_NOT_IMPLEMENTED; +} +#endif /* #if OS_SOLARIS */ + + +/* This function is called by the framework to gather the input. The module stays + * most of its lifetime inside this function. It MUST NEVER exit this function. Doing + * so would end module processing and rsyslog would NOT reschedule the module. If + * you exit from this function, you violate the interface specification! + */ +BEGINrunInput +CODESTARTrunInput + #if defined(OS_SOLARIS) && defined (HAVE_PORT_SOURCE_FILE) /* use FEN on Solaris! */ + if(runModConf->opMode == OPMODE_INOTIFY) { + DBGPRINTF("auto-adjusting 'inotify' mode to 'fen' on Solaris\n"); + runModConf->opMode = OPMODE_FEN; + } + #endif + DBGPRINTF("working in %s mode\n", + (runModConf->opMode == OPMODE_POLLING) ? "polling" : + ((runModConf->opMode == OPMODE_INOTIFY) ?"inotify" : "fen")); + if(runModConf->opMode == OPMODE_POLLING) + iRet = doPolling(); + else if(runModConf->opMode == OPMODE_INOTIFY) + iRet = do_inotify(); + else if(runModConf->opMode == OPMODE_FEN) + iRet = do_fen(); + else { + LogError(0, RS_RET_NOT_IMPLEMENTED, "imfile: unknown mode %d set", + runModConf->opMode); + return RS_RET_NOT_IMPLEMENTED; + } + DBGPRINTF("terminating upon request of rsyslog core\n"); +ENDrunInput + + +/* The function is called by rsyslog before runInput() is called. It is a last chance + * to set up anything specific. Most importantly, it can be used to tell rsyslog if the + * input shall run or not. The idea is that if some config settings (or similiar things) + * are not OK, the input can tell rsyslog it will not execute. To do so, return + * RS_RET_NO_RUN or a specific error code. If RS_RET_OK is returned, rsyslog will + * proceed and call the runInput() entry point. + */ +BEGINwillRun +CODESTARTwillRun + /* we need to create the inputName property (only once during our lifetime) */ + CHKiRet(prop.Construct(&pInputName)); + CHKiRet(prop.SetString(pInputName, UCHAR_CONSTANT("imfile"), sizeof("imfile") - 1)); + CHKiRet(prop.ConstructFinalize(pInputName)); +finalize_it: +ENDwillRun + +// TODO: refactor this into a generically-usable "atomic file creation" utility for +// all kinds of "state files" +static rsRetVal ATTR_NONNULL() +atomicWriteStateFile(const char *fn, const char *content) +{ + DEFiRet; + const int fd = open(fn, O_CLOEXEC | O_NOCTTY | O_WRONLY | O_CREAT | O_TRUNC, 0600); + if(fd < 0) { + LogError(errno, RS_RET_IO_ERROR, "imfile: cannot open state file '%s' for " + "persisting file state - some data will probably be duplicated " + "on next startup", fn); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + const size_t toWrite = strlen(content); + const ssize_t w = write(fd, content, toWrite); + if(w != (ssize_t) toWrite) { + LogError(errno, RS_RET_IO_ERROR, "imfile: partial write to state file '%s' " + "this may cause trouble in the future. We will try to delete the " + "state file, as this provides most consistent state", fn); + unlink(fn); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + +finalize_it: + if(fd >= 0) { + close(fd); + } + RETiRet; +} + +/* This function should be called after any file ID change - that is if + * file grown from hash-only statefile, or was truncated, this will ensure + * we delete the old file so we do not make garbage in our working dir and + * there are no leftover statefiles which can in theory later bind to something + * and cause data loss. + * jvymazal 2019-11-27 + */ +static void +removeOldStatefile(const uchar *statefn, const char *hashToDelete) +{ + int ret; + uchar statefname[MAXFNAME]; + + getFullStateFileName(statefn, hashToDelete, statefname, sizeof(statefname)); + DBGPRINTF("removing old state file: '%s'\n", statefname); + ret = unlink((const char*)statefname); + if(ret != 0) { + if (errno != ENOENT) { + LogError(errno, RS_RET_IO_ERROR, + "imfile error trying to delete old state file: '%s' - ignoring this " + "error, usually this means a file no longer file is left over, but " + "this may also cause some real trouble. Still the best we can do ", + statefname); + } else { + DBGPRINTF("trying to delete no longer valid statefile '%s' which no " + "longer exists (probably already deleted)\n", statefname); + } + } +} + + +/* This function persists information for a specific file being monitored. + * To do so, it simply persists the stream object. We do NOT abort on error + * iRet as that makes matters worse (at least we can try persisting the others...). + * rgerhards, 2008-02-13 + */ +static rsRetVal ATTR_NONNULL() +persistStrmState(act_obj_t *const act) +{ + DEFiRet; + uchar statefile[MAXFNAME]; + uchar statefname[MAXFNAME]; + + uchar *const statefn = getStateFileName(act, statefile, sizeof(statefile)); + getFileID(act); + getFullStateFileName(statefn, act->file_id, statefname, sizeof(statefname)); + DBGPRINTF("persisting state for '%s', state file '%s'\n", act->name, statefname); + + struct json_object *jval = NULL; + struct json_object *json = NULL; + CHKmalloc(json = json_object_new_object()); + jval = json_object_new_string((char*) act->name); + json_object_object_add(json, "filename", jval); + jval = json_object_new_int(strmGetPrevWasNL(act->pStrm)); + json_object_object_add(json, "prev_was_nl", jval); + + /* we access some data items a bit dirty, as we need to refactor the whole + * thing in any case - TODO + */ + jval = json_object_new_int64(act->pStrm->iCurrOffs); + json_object_object_add(json, "curr_offs", jval); + jval = json_object_new_int64(act->pStrm->strtOffs); + json_object_object_add(json, "strt_offs", jval); + + const uchar *const prevLineSegment = strmGetPrevLineSegment(act->pStrm); + if(prevLineSegment != NULL) { + jval = json_object_new_string((const char*) prevLineSegment); + json_object_object_add(json, "prev_line_segment", jval); + } + + const uchar *const prevMsgSegment = strmGetPrevMsgSegment(act->pStrm); + if(prevMsgSegment != NULL) { + jval = json_object_new_string((const char*) prevMsgSegment); + json_object_object_add(json, "prev_msg_segment", jval); + } + + const char *jstr = json_object_to_json_string_ext(json, JSON_C_TO_STRING_SPACED); + + CHKiRet(atomicWriteStateFile((const char*)statefname, jstr)); + json_object_put(json); + + /* file-id changed remove the old statefile */ + if (strncmp((const char *)act->file_id_prev, (const char *)act->file_id, FILE_ID_HASH_SIZE)) { + removeOldStatefile(statefn, act->file_id_prev); + } + +finalize_it: + if(iRet != RS_RET_OK) { + LogError(0, iRet, "imfile: could not persist state " + "file %s - data may be repeated on next " + "startup. Is WorkDirectory set?", + statefname); + } + + RETiRet; +} + +/* This function is called by the framework after runInput() has been terminated. It + * shall free any resources and prepare the module for unload. + */ +BEGINafterRun +CODESTARTafterRun + if(pInputName != NULL) + prop.Destruct(&pInputName); +ENDafterRun + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +/* The following entry points are defined in module-template.h. + * In general, they need to be present, but you do NOT need to provide + * any code here. + */ +BEGINmodExit +CODESTARTmodExit + /* release objects we used */ + objRelease(strm, CORE_COMPONENT); + objRelease(glbl, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); + + #ifdef HAVE_INOTIFY_INIT + free(wdmap); + #endif +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +/* The following function shall reset all configuration variables to their + * default values. The code provided in modInit() below registers it to be + * called on "$ResetConfigVariables". You may also call it from other places, + * but in general this is not necessary. Once runInput() has been called, this + * function here is never again called. + */ +static rsRetVal +resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + + free(cs.pszFileName); + cs.pszFileName = NULL; + free(cs.pszFileTag); + cs.pszFileTag = NULL; + free(cs.pszStateFile); + cs.pszStateFile = NULL; + + /* set defaults... */ + cs.iPollInterval = DFLT_PollInterval; + cs.iFacility = 128; /* local0 */ + cs.iSeverity = 5; /* notice, as of rfc 3164 */ + cs.readMode = 0; + cs.maxLinesAtOnce = 10240; + cs.trimLineOverBytes = 0; + + RETiRet; +} + +static inline void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + LogError(0, NO_ERRCODE, "imfile: ruleset '%s' for %s not found - " + "using default ruleset instead", inst->pszBindRuleset, + inst->pszFileName); +} + +/* modInit() is called once the module is loaded. It must perform all module-wide + * initialization tasks. There are also a number of housekeeping tasks that the + * framework requires. These are handled by the macros. Please note that the + * complexity of processing is depending on the actual module. However, only + * thing absolutely necessary should be done here. Actual app-level processing + * is to be performed in runInput(). A good sample of what to do here may be to + * set some variable defaults. + */ +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(strm, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + + DBGPRINTF("version %s initializing\n", VERSION); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputfilename", 0, eCmdHdlrGetWord, + NULL, &cs.pszFileName, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputfiletag", 0, eCmdHdlrGetWord, + NULL, &cs.pszFileTag, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputfilestatefile", 0, eCmdHdlrGetWord, + NULL, &cs.pszStateFile, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputfileseverity", 0, eCmdHdlrSeverity, + NULL, &cs.iSeverity, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputfilefacility", 0, eCmdHdlrFacility, + NULL, &cs.iFacility, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputfilereadmode", 0, eCmdHdlrInt, + NULL, &cs.readMode, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputfilemaxlinesatonce", 0, eCmdHdlrSize, + NULL, &cs.maxLinesAtOnce, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputfiletrimlineoverbytes", 0, eCmdHdlrSize, + NULL, &cs.trimLineOverBytes, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputfilepersiststateinterval", 0, eCmdHdlrInt, + NULL, &cs.iPersistStateInterval, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputfilebindruleset", 0, eCmdHdlrGetWord, + NULL, &cs.pszBindRuleset, STD_LOADABLE_MODULE_ID)); + /* that command ads a new file! */ + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputrunfilemonitor", 0, eCmdHdlrGetWord, + addInstance, NULL, STD_LOADABLE_MODULE_ID)); + /* module-global config params - will be disabled in configs that are loaded + * via module(...). + */ + CHKiRet(regCfSysLineHdlr2((uchar *)"inputfilepollinterval", 0, eCmdHdlrInt, + NULL, &cs.iPollInterval, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit diff --git a/plugins/imfile/siphash.c b/plugins/imfile/siphash.c new file mode 100644 index 0000000..8d5fac7 --- /dev/null +++ b/plugins/imfile/siphash.c @@ -0,0 +1,185 @@ +/* SipHash reference C implementation + * + * Copyright (c) 2012-2016 Jean-Philippe Aumasson + * <jeanphilippe.aumasson@gmail.com> + * Copyright (c) 2012-2014 Daniel J. Bernstein <djb@cr.yp.to> + * + * Slightly adapted by rsyslog in regard to build system and code style + * check. + * + * To the extent possible under law, the author(s) have dedicated all copyright + * and related and neighboring rights to this software to the public domain + * worldwide. This software is distributed without any warranty. + * + * You should have received a copy of the CC0 Public Domain Dedication along + * with + * this software. If not, see + * <http://creativecommons.org/publicdomain/zero/1.0/>. + * + * For details on siphash see https://131002.net/siphash/ + */ +#include <assert.h> +#include <stdint.h> +#include <stdio.h> +#include <string.h> + +/* default: SipHash-2-4 */ +#define cROUNDS 2 +#define dROUNDS 4 + +#define ROTL(x, b) (uint64_t)(((x) << (b)) | ((x) >> (64 - (b)))) + +#define U32TO8_LE(p, v) \ + (p)[0] = (uint8_t)((v)); \ + (p)[1] = (uint8_t)((v) >> 8); \ + (p)[2] = (uint8_t)((v) >> 16); \ + (p)[3] = (uint8_t)((v) >> 24); + +#define U64TO8_LE(p, v) \ + U32TO8_LE((p), (uint32_t)((v))); \ + U32TO8_LE((p) + 4, (uint32_t)((v) >> 32)); + +#define U8TO64_LE(p) \ + (((uint64_t)((p)[0])) | ((uint64_t)((p)[1]) << 8) | \ + ((uint64_t)((p)[2]) << 16) | ((uint64_t)((p)[3]) << 24) | \ + ((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40) | \ + ((uint64_t)((p)[6]) << 48) | ((uint64_t)((p)[7]) << 56)) + +#define SIPROUND \ + do { \ + v0 += v1; \ + v1 = ROTL(v1, 13); \ + v1 ^= v0; \ + v0 = ROTL(v0, 32); \ + v2 += v3; \ + v3 = ROTL(v3, 16); \ + v3 ^= v2; \ + v0 += v3; \ + v3 = ROTL(v3, 21); \ + v3 ^= v0; \ + v2 += v1; \ + v1 = ROTL(v1, 17); \ + v1 ^= v2; \ + v2 = ROTL(v2, 32); \ + } while (0) + +#ifdef DEBUG +#define TRACE \ + do { \ + printf("(%3d) v0 %08x %08x\n", (int)inlen, (uint32_t)(v0 >> 32), \ + (uint32_t)v0); \ + printf("(%3d) v1 %08x %08x\n", (int)inlen, (uint32_t)(v1 >> 32), \ + (uint32_t)v1); \ + printf("(%3d) v2 %08x %08x\n", (int)inlen, (uint32_t)(v2 >> 32), \ + (uint32_t)v2); \ + printf("(%3d) v3 %08x %08x\n", (int)inlen, (uint32_t)(v3 >> 32), \ + (uint32_t)v3); \ + } while (0) +#else +#define TRACE +#endif + +extern int rs_siphash(const uint8_t *in, const size_t inlen, const uint8_t *k, + uint8_t *out, const size_t outlen); /* avoid compiler warning */ +#if defined(__clang__) +#pragma GCC diagnostic ignored "-Wunknown-attributes" +#endif +int +#if defined(__clang__) +__attribute__((no_sanitize("unsigned-integer-overflow"))) +#endif +rs_siphash(const uint8_t *in, const size_t inlen, const uint8_t *k, + uint8_t *out, const size_t outlen) { + + uint64_t v0 = 0x736f6d6570736575ULL; + uint64_t v1 = 0x646f72616e646f6dULL; + uint64_t v2 = 0x6c7967656e657261ULL; + uint64_t v3 = 0x7465646279746573ULL; + uint64_t k0 = U8TO64_LE(k); + uint64_t k1 = U8TO64_LE(k + 8); + uint64_t m; + int i; + const uint8_t *end = in + inlen - (inlen % sizeof(uint64_t)); + const int left = inlen & 7; + uint64_t b = ((uint64_t)inlen) << 56; + assert((outlen == 8) || (outlen == 16)); + v3 ^= k1; + v2 ^= k0; + v1 ^= k1; + v0 ^= k0; + + if (outlen == 16) + v1 ^= 0xee; + + for (; in != end; in += 8) { + m = U8TO64_LE(in); + v3 ^= m; + + TRACE; + for (i = 0; i < cROUNDS; ++i) + SIPROUND; + + v0 ^= m; + } + + switch (left) { + case 7: + b |= ((uint64_t)in[6]) << 48; + /*FALLTHROUGH*/ + case 6: + b |= ((uint64_t)in[5]) << 40; + /*FALLTHROUGH*/ + case 5: + b |= ((uint64_t)in[4]) << 32; + /*FALLTHROUGH*/ + case 4: + b |= ((uint64_t)in[3]) << 24; + /*FALLTHROUGH*/ + case 3: + b |= ((uint64_t)in[2]) << 16; + /*FALLTHROUGH*/ + case 2: + b |= ((uint64_t)in[1]) << 8; + /*FALLTHROUGH*/ + case 1: + b |= ((uint64_t)in[0]); + break; + case 0: + default: + break; + } + + v3 ^= b; + + TRACE; + for (i = 0; i < cROUNDS; ++i) + SIPROUND; + + v0 ^= b; + + if (outlen == 16) + v2 ^= 0xee; + else + v2 ^= 0xff; + + TRACE; + for (i = 0; i < dROUNDS; ++i) + SIPROUND; + + b = v0 ^ v1 ^ v2 ^ v3; + U64TO8_LE(out, b); + + if (outlen == 8) + return 0; + + v1 ^= 0xdd; + + TRACE; + for (i = 0; i < dROUNDS; ++i) + SIPROUND; + + b = v0 ^ v1 ^ v2 ^ v3; + U64TO8_LE(out + 8, b); + + return 0; +} diff --git a/plugins/imgssapi/Makefile.am b/plugins/imgssapi/Makefile.am new file mode 100644 index 0000000..ea01635 --- /dev/null +++ b/plugins/imgssapi/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = imgssapi.la + +imgssapi_la_SOURCES = imgssapi.c +imgssapi_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +imgssapi_la_LDFLAGS = -module -avoid-version +imgssapi_la_LIBADD = $(GSS_LIBS) diff --git a/plugins/imgssapi/Makefile.in b/plugins/imgssapi/Makefile.in new file mode 100644 index 0000000..4b920e6 --- /dev/null +++ b/plugins/imgssapi/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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\ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/imgssapi/imgssapi.c b/plugins/imgssapi/imgssapi.c new file mode 100644 index 0000000..65eceb9 --- /dev/null +++ b/plugins/imgssapi/imgssapi.c @@ -0,0 +1,823 @@ +/* imgssapi.c + * This is the implementation of the GSSAPI input module. + * + * Note: the root gssapi code was contributed by varmojfekoj and is most often + * maintened by him. I am just doing the plumbing around it (I event don't have a + * test lab for gssapi yet... ). I am very grateful for this useful code + * contribution -- rgerhards, 2008-03-05 + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * Copyright 2007, 2017 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Rsyslog is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Rsyslog is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Rsyslog. If not, see <http://www.gnu.org/licenses/>. + * + * A copy of the GPL can be found in the file "COPYING" in this distribution. + */ +#include "config.h" +#include <stdlib.h> +#include <assert.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <stdarg.h> +#include <ctype.h> +#include <netinet/in.h> +#include <netdb.h> +#include <sys/types.h> +#include <sys/socket.h> +#if HAVE_FCNTL_H +#include <fcntl.h> +#endif +#include <gssapi/gssapi.h> +#include "rsyslog.h" +#include "dirty.h" +#include "cfsysline.h" +#include "module-template.h" +#include "unicode-helper.h" +#include "net.h" +#include "srUtils.h" +#include "gss-misc.h" +#include "tcpsrv.h" +#include "tcps_sess.h" +#include "errmsg.h" +#include "netstrm.h" +#include "glbl.h" +#include "debug.h" +#include "unlimited_select.h" +#include "rsconf.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP + +/* defines */ +#define ALLOWEDMETHOD_GSS 2 +#define ALLOWEDMETHOD_TCP 1 + + +/* some forward definitions - they may go away when we no longer include imtcp.c */ +static rsRetVal addGSSListener(void __attribute__((unused)) *pVal, uchar *pNewVal); +static rsRetVal actGSSListener(uchar *port); +static int TCPSessGSSInit(void); +static void TCPSessGSSClose(tcps_sess_t* pSess); +static rsRetVal TCPSessGSSRecv(tcps_sess_t *pSess, void *buf, size_t buf_len, ssize_t *); +static rsRetVal onSessAccept(tcpsrv_t *pThis, tcps_sess_t *ppSess); +static rsRetVal OnSessAcceptGSS(tcpsrv_t *pThis, tcps_sess_t *ppSess); + +/* static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(tcpsrv) +DEFobjCurrIf(tcps_sess) +DEFobjCurrIf(gssutil) +DEFobjCurrIf(netstrm) +DEFobjCurrIf(net) +DEFobjCurrIf(glbl) +DEFobjCurrIf(prop) + +static tcpsrv_t *pOurTcpsrv = NULL; /* our TCP server(listener) TODO: change for multiple instances */ +static gss_cred_id_t gss_server_creds = GSS_C_NO_CREDENTIAL; +static uchar *srvPort; + +/* our usr structure for the tcpsrv object */ +typedef struct gsssrv_s { + char allowedMethods; +} gsssrv_t; + +/* our usr structure for the session object */ +typedef struct gss_sess_s { + OM_uint32 gss_flags; + gss_ctx_id_t gss_context; + char allowedMethods; +} gss_sess_t; + + +/* config variables */ +struct modConfData_s { + EMPTY_STRUCT; +}; + +static uchar *pszLstnPortFileName = NULL; /* file for dynamic port */ +static int iTCPSessMax = 200; /* max number of sessions */ +static char *gss_listen_service_name = NULL; +static int bPermitPlainTcp = 0; /* plain tcp syslog allowed on GSSAPI port? */ +static int bKeepAlive = 0; /* use SO_KEEPALIVE? */ + + +/* methods */ +/* callbacks */ +static rsRetVal OnSessConstructFinalize(void *ppUsr) +{ + DEFiRet; + gss_sess_t **ppGSess = (gss_sess_t**) ppUsr; + gss_sess_t *pGSess; + + assert(ppGSess != NULL); + + if((pGSess = calloc(1, sizeof(gss_sess_t))) == NULL) + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + + pGSess->gss_flags = 0; + pGSess->gss_context = GSS_C_NO_CONTEXT; + pGSess->allowedMethods = 0; + + *ppGSess = pGSess; + +finalize_it: + RETiRet; +} + + +/* Destruct the user session pointer for a GSSAPI session. Please note + * that it *is* valid to receive a NULL user pointer. In this case, the + * sessions is to be torn down before it was fully initialized. This + * happens in error cases, e.g. when the host ACL did not match. + * rgerhards, 2008-03-03 + */ +static rsRetVal +OnSessDestruct(void *ppUsr) +{ + DEFiRet; + gss_sess_t **ppGSess = (gss_sess_t**) ppUsr; + + assert(ppGSess != NULL); + if(*ppGSess == NULL) + FINALIZE; + + if((*ppGSess)->allowedMethods & ALLOWEDMETHOD_GSS) { + OM_uint32 maj_stat, min_stat; + maj_stat = gss_delete_sec_context(&min_stat, &(*ppGSess)->gss_context, GSS_C_NO_BUFFER); + if (maj_stat != GSS_S_COMPLETE) + gssutil.display_status((char*)"deleting context", maj_stat, min_stat); + } + + free(*ppGSess); + *ppGSess = NULL; + +finalize_it: + RETiRet; +} + + +/* Check if the host is permitted to send us messages. + * Note: the pUsrSess may be zero if the server is running in tcp-only mode! + */ +static int +isPermittedHost(struct sockaddr *addr, char *fromHostFQDN, void *pUsrSrv, void*pUsrSess) +{ + gsssrv_t *pGSrv; + gss_sess_t *pGSess; + char allowedMethods = 0; + + assert(pUsrSrv != NULL); + pGSrv = (gsssrv_t*) pUsrSrv; + pGSess = (gss_sess_t*) pUsrSess; + + if((pGSrv->allowedMethods & ALLOWEDMETHOD_TCP) && + net.isAllowedSender2((uchar*)"TCP", addr, (char*)fromHostFQDN, 1)) + allowedMethods |= ALLOWEDMETHOD_TCP; + if((pGSrv->allowedMethods & ALLOWEDMETHOD_GSS) && + net.isAllowedSender2((uchar*)"GSS", addr, (char*)fromHostFQDN, 1)) + allowedMethods |= ALLOWEDMETHOD_GSS; + if(allowedMethods && pGSess != NULL) + pGSess->allowedMethods = allowedMethods; + return allowedMethods; +} + + +static rsRetVal +onSessAccept(tcpsrv_t *pThis, tcps_sess_t *pSess) +{ + DEFiRet; + gsssrv_t *pGSrv; + + pGSrv = (gsssrv_t*) pThis->pUsr; + + if(pGSrv->allowedMethods & ALLOWEDMETHOD_GSS) { + iRet = OnSessAcceptGSS(pThis, pSess); + } + + RETiRet; +} + + +static rsRetVal +onRegularClose(tcps_sess_t *pSess) +{ + DEFiRet; + gss_sess_t *pGSess; + + assert(pSess != NULL); + assert(pSess->pUsr != NULL); + pGSess = (gss_sess_t*) pSess->pUsr; + + if(pGSess->allowedMethods & ALLOWEDMETHOD_GSS) + TCPSessGSSClose(pSess); + else { + /* process any incomplete frames left over */ + tcps_sess.PrepareClose(pSess); + /* Session closed */ + tcps_sess.Close(pSess); + } + RETiRet; +} + + +static rsRetVal +onErrClose(tcps_sess_t *pSess) +{ + DEFiRet; + gss_sess_t *pGSess; + + assert(pSess != NULL); + assert(pSess->pUsr != NULL); + pGSess = (gss_sess_t*) pSess->pUsr; + + if(pGSess->allowedMethods & ALLOWEDMETHOD_GSS) + TCPSessGSSClose(pSess); + else + tcps_sess.Close(pSess); + + RETiRet; +} + + +/* open the listen sockets */ +static rsRetVal +doOpenLstnSocks(tcpsrv_t *pSrv) +{ + gsssrv_t *pGSrv; + DEFiRet; + + ISOBJ_TYPE_assert(pSrv, tcpsrv); + pGSrv = pSrv->pUsr; + assert(pGSrv != NULL); + + /* first apply some config settings */ + if(pGSrv->allowedMethods) { + if(pGSrv->allowedMethods & ALLOWEDMETHOD_GSS) { + if(TCPSessGSSInit()) { + LogError(0, NO_ERRCODE, "GSS-API initialization failed\n"); + pGSrv->allowedMethods &= ~(ALLOWEDMETHOD_GSS); + } + } + if(pGSrv->allowedMethods) { + /* fallback to plain TCP */ + CHKiRet(tcpsrv.create_tcp_socket(pSrv)); + } else { + ABORT_FINALIZE(RS_RET_GSS_ERR); + } + } + +finalize_it: + RETiRet; +} + + +static rsRetVal +doRcvData(tcps_sess_t *pSess, char *buf, size_t lenBuf, ssize_t *piLenRcvd, int *const oserr) +{ + DEFiRet; + int allowedMethods; + gss_sess_t *pGSess; + + assert(pSess != NULL); + assert(pSess->pUsr != NULL); + pGSess = (gss_sess_t*) pSess->pUsr; + assert(piLenRcvd != NULL); + + allowedMethods = pGSess->allowedMethods; + if(allowedMethods & ALLOWEDMETHOD_GSS) { + CHKiRet(TCPSessGSSRecv(pSess, buf, lenBuf, piLenRcvd)); + } else { + *piLenRcvd = lenBuf; + CHKiRet(netstrm.Rcv(pSess->pStrm, (uchar*) buf, piLenRcvd, oserr)); + } + +finalize_it: + RETiRet; +} + + +/* end callbacks */ + +static rsRetVal +addGSSListener(void __attribute__((unused)) *pVal, uchar *pNewVal) +{ + DEFiRet; + + if((ustrcmp(pNewVal, UCHAR_CONSTANT("0")) == 0 && pszLstnPortFileName == NULL) + || ustrcmp(pNewVal, UCHAR_CONSTANT("0")) < 0) { + CHKmalloc(srvPort = (uchar*)strdup("514")); + } else { + srvPort = pNewVal; + } + +finalize_it: + RETiRet; +} + +static rsRetVal +actGSSListener(uchar *port) +{ + DEFiRet; + tcpLstnParams_t *cnf_params = NULL; + gsssrv_t *pGSrv = NULL; + + assert(pOurTcpsrv == NULL); + CHKmalloc(cnf_params = (tcpLstnParams_t*) calloc(1, sizeof(tcpLstnParams_t))); + /* first create/init the gsssrv "object" */ + if((pGSrv = calloc(1, sizeof(gsssrv_t))) == NULL) + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + + pGSrv->allowedMethods = ALLOWEDMETHOD_GSS; + if(bPermitPlainTcp) + pGSrv->allowedMethods |= ALLOWEDMETHOD_TCP; + /* gsssrv initialized */ + + CHKiRet(tcpsrv.Construct(&pOurTcpsrv)); + CHKiRet(tcpsrv.SetUsrP(pOurTcpsrv, pGSrv)); + CHKiRet(tcpsrv.SetCBOnSessConstructFinalize(pOurTcpsrv, OnSessConstructFinalize)); + CHKiRet(tcpsrv.SetCBOnSessDestruct(pOurTcpsrv, OnSessDestruct)); + CHKiRet(tcpsrv.SetCBIsPermittedHost(pOurTcpsrv, isPermittedHost)); + CHKiRet(tcpsrv.SetCBRcvData(pOurTcpsrv, doRcvData)); + CHKiRet(tcpsrv.SetCBOpenLstnSocks(pOurTcpsrv, doOpenLstnSocks)); + CHKiRet(tcpsrv.SetCBOnSessAccept(pOurTcpsrv, onSessAccept)); + CHKiRet(tcpsrv.SetCBOnRegularClose(pOurTcpsrv, onRegularClose)); + CHKiRet(tcpsrv.SetCBOnErrClose(pOurTcpsrv, onErrClose)); + CHKiRet(tcpsrv.SetInputName(pOurTcpsrv, cnf_params, UCHAR_CONSTANT("imgssapi"))); + CHKiRet(tcpsrv.SetKeepAlive(pOurTcpsrv, bKeepAlive)); + CHKiRet(tcpsrv.SetOrigin(pOurTcpsrv, UCHAR_CONSTANT("imgssapi"))); + cnf_params->pszPort = port; + cnf_params->bSuppOctetFram = 1; + tcpsrv.configureTCPListen(pOurTcpsrv, cnf_params); + CHKiRet(tcpsrv.ConstructFinalize(pOurTcpsrv)); + cnf_params = NULL; + +finalize_it: + if(iRet != RS_RET_OK) { + LogError(0, NO_ERRCODE, "error %d trying to add listener", iRet); + if(pOurTcpsrv != NULL) + tcpsrv.Destruct(&pOurTcpsrv); + free(pGSrv); + } + free(cnf_params); + RETiRet; +} + + +/* returns 0 if all went OK, -1 if it failed */ +static int TCPSessGSSInit(void) +{ + gss_buffer_desc name_buf; + gss_name_t server_name; + OM_uint32 maj_stat, min_stat; + + if (gss_server_creds != GSS_C_NO_CREDENTIAL) + return 0; + + name_buf.value = (gss_listen_service_name == NULL) ? (char*)"host" : gss_listen_service_name; + name_buf.length = strlen(name_buf.value) + 1; + maj_stat = gss_import_name(&min_stat, &name_buf, GSS_C_NT_HOSTBASED_SERVICE, &server_name); + if (maj_stat != GSS_S_COMPLETE) { + gssutil.display_status((char*)"importing name", maj_stat, min_stat); + return -1; + } + + maj_stat = gss_acquire_cred(&min_stat, server_name, 0, + GSS_C_NULL_OID_SET, GSS_C_ACCEPT, + &gss_server_creds, NULL, NULL); + if (maj_stat != GSS_S_COMPLETE) { + gssutil.display_status((char*)"acquiring credentials", maj_stat, min_stat); + return -1; + } + + gss_release_name(&min_stat, &server_name); + dbgprintf("GSS-API initialized\n"); + return 0; +} + + +/* returns 0 if all went OK, -1 if it failed + * tries to guess if the connection uses gssapi. + */ +static rsRetVal +OnSessAcceptGSS(tcpsrv_t *pThis, tcps_sess_t *pSess) +{ + DEFiRet; + gss_buffer_desc send_tok, recv_tok; + gss_name_t client; + OM_uint32 maj_stat, min_stat, acc_sec_min_stat; + gss_ctx_id_t *context; + OM_uint32 *sess_flags; + int fdSess; + char allowedMethods; + gsssrv_t *pGSrv; + gss_sess_t *pGSess; + uchar *pszPeer = NULL; + int lenPeer = 0; + char *buf = NULL; + + assert(pSess != NULL); + + pGSrv = (gsssrv_t*) pThis->pUsr; + pGSess = (gss_sess_t*) pSess->pUsr; + allowedMethods = pGSrv->allowedMethods; + if(allowedMethods & ALLOWEDMETHOD_GSS) { + int ret = 0; + const size_t bufsize = glbl.GetMaxLine(runConf); + CHKmalloc(buf = (char*) malloc(bufsize + 1)); + + prop.GetString(pSess->fromHostIP, &pszPeer, &lenPeer); + + dbgprintf("GSS-API Trying to accept TCP session %p from %s\n", pSess, (char *)pszPeer); + + CHKiRet(netstrm.GetSock(pSess->pStrm, &fdSess)); // TODO: method access! + if (allowedMethods & ALLOWEDMETHOD_TCP) { + int len; + struct timeval tv; +#ifdef USE_UNLIMITED_SELECT + fd_set *pFds = malloc(glbl.GetFdSetSize()); +#else + fd_set fds; + fd_set *pFds = &fds; +#endif + + do { + FD_ZERO(pFds); + FD_SET(fdSess, pFds); + tv.tv_sec = 1; + tv.tv_usec = 0; + ret = select(fdSess + 1, pFds, NULL, NULL, &tv); + } while (ret < 0 && errno == EINTR); + if (ret < 0) { + LogError(0, RS_RET_ERR, "TCP session %p from %s will be " + "closed, error ignored\n", pSess, (char *)pszPeer); + ABORT_FINALIZE(RS_RET_ERR); // TODO: define good error codes + } else if (ret == 0) { + dbgprintf("GSS-API Reverting to plain TCP\n"); + pGSess->allowedMethods = ALLOWEDMETHOD_TCP; + ABORT_FINALIZE(RS_RET_OK); // TODO: define good error codes + } + + do { + ret = recv(fdSess, buf, bufsize, MSG_PEEK); + } while (ret < 0 && errno == EINTR); + if (ret <= 0) { + if (ret == 0) { + dbgprintf("GSS-API Connection closed by peer %s\n", (char *)pszPeer); + } else { + LogError(0, RS_RET_ERR, "TCP(GSS) session %p from %s will be closed, " + "error ignored\n", pSess, (char *)pszPeer); + } + ABORT_FINALIZE(RS_RET_ERR); // TODO: define good error codes + } + + if (ret < 4) { + dbgprintf("GSS-API Reverting to plain TCP from %s\n", (char *)pszPeer); + pGSess->allowedMethods = ALLOWEDMETHOD_TCP; + ABORT_FINALIZE(RS_RET_OK); // TODO: define good error codes + } else if (ret == 4) { + /* The client might has been interupted after sending + * the data length (4B), give him another chance. + */ + srSleep(1, 0); + do { + ret = recv(fdSess, buf, bufsize, MSG_PEEK); + } while (ret < 0 && errno == EINTR); + if (ret <= 0) { + if (ret == 0) { + dbgprintf("GSS-API Connection closed by peer %s\n", (char *)pszPeer); + } else { + LogError(0, NO_ERRCODE, "TCP session %p from %s will be " + "closed, error ignored\n", pSess, (char *)pszPeer); + } + ABORT_FINALIZE(RS_RET_ERR); // TODO: define good error codes + } + } + + /* TODO: how does this work together with IPv6? Does it? */ + len = ntohl((buf[0] << 24) + | (buf[1] << 16) + | (buf[2] << 8) + | buf[3]); + if ((ret - 4) < len || len == 0) { + dbgprintf("GSS-API Reverting to plain TCP from %s\n", (char *)pszPeer); + pGSess->allowedMethods = ALLOWEDMETHOD_TCP; + ABORT_FINALIZE(RS_RET_OK); // TODO: define good error codes + } + + freeFdSet(pFds); + } + + context = &pGSess->gss_context; + *context = GSS_C_NO_CONTEXT; + sess_flags = &pGSess->gss_flags; + do { + if (gssutil.recv_token(fdSess, &recv_tok) <= 0) { + LogError(0, NO_ERRCODE, "TCP session %p from %s will be " + "closed, error ignored\n", pSess, (char *)pszPeer); + ABORT_FINALIZE(RS_RET_ERR); // TODO: define good error codes + } + maj_stat = gss_accept_sec_context(&acc_sec_min_stat, context, gss_server_creds, + &recv_tok, GSS_C_NO_CHANNEL_BINDINGS, &client, + NULL, &send_tok, sess_flags, NULL, NULL); + if (recv_tok.value) { + free(recv_tok.value); + recv_tok.value = NULL; + } + if (maj_stat != GSS_S_COMPLETE && maj_stat != GSS_S_CONTINUE_NEEDED) { + gss_release_buffer(&min_stat, &send_tok); + if (*context != GSS_C_NO_CONTEXT) + gss_delete_sec_context(&min_stat, context, GSS_C_NO_BUFFER); + if ((allowedMethods & ALLOWEDMETHOD_TCP) && + (GSS_ROUTINE_ERROR(maj_stat) == GSS_S_DEFECTIVE_TOKEN)) { + dbgprintf("GSS-API Reverting to plain TCP from %s\n", (char *)pszPeer); + dbgprintf("tcp session socket with new data: #%d\n", fdSess); + if(tcps_sess.DataRcvd(pSess, buf, ret) != RS_RET_OK) { + LogError(0, NO_ERRCODE, "Tearing down TCP " + "Session %p from %s - see previous messages " + "for reason(s)\n", pSess, (char *)pszPeer); + ABORT_FINALIZE(RS_RET_ERR); // TODO: define good error codes + } + pGSess->allowedMethods = ALLOWEDMETHOD_TCP; + ABORT_FINALIZE(RS_RET_OK); // TODO: define good error codes + } + gssutil.display_status((char*)"accepting context", maj_stat, acc_sec_min_stat); + ABORT_FINALIZE(RS_RET_ERR); // TODO: define good error codes + } + if (send_tok.length != 0) { + if(gssutil.send_token(fdSess, &send_tok) < 0) { + gss_release_buffer(&min_stat, &send_tok); + LogError(0, NO_ERRCODE, "TCP session %p from %s will be " + "closed, error ignored\n", pSess, (char *)pszPeer); + if (*context != GSS_C_NO_CONTEXT) + gss_delete_sec_context(&min_stat, context, GSS_C_NO_BUFFER); + ABORT_FINALIZE(RS_RET_ERR); // TODO: define good error codes + } + gss_release_buffer(&min_stat, &send_tok); + } + } while (maj_stat == GSS_S_CONTINUE_NEEDED); + + maj_stat = gss_display_name(&min_stat, client, &recv_tok, NULL); + if (maj_stat != GSS_S_COMPLETE) { + gssutil.display_status((char*)"displaying name", maj_stat, min_stat); + } else { + dbgprintf("GSS-API Accepted connection from peer %s: %s\n", (char *)pszPeer, + (char*) recv_tok.value); + } + gss_release_name(&min_stat, &client); + gss_release_buffer(&min_stat, &recv_tok); + + dbgprintf("GSS-API Provided context flags:\n"); + gssutil.display_ctx_flags(*sess_flags); + pGSess->allowedMethods = ALLOWEDMETHOD_GSS; + } + +finalize_it: + free(buf); + RETiRet; +} + + +/* Replaces recv() for gssapi connections. + */ +rsRetVal TCPSessGSSRecv(tcps_sess_t *pSess, void *buf, size_t buf_len, ssize_t *piLenRcvd) +{ + DEFiRet; + gss_buffer_desc xmit_buf, msg_buf; + gss_ctx_id_t *context; + OM_uint32 maj_stat, min_stat; + int fdSess; + int conf_state; + gss_sess_t *pGSess; + + assert(pSess->pUsr != NULL); + assert(piLenRcvd != NULL); + pGSess = (gss_sess_t*) pSess->pUsr; + + netstrm.GetSock(pSess->pStrm, &fdSess); // TODO: method access, CHKiRet! + if(gssutil.recv_token(fdSess, &xmit_buf) <= 0) + ABORT_FINALIZE(RS_RET_GSS_ERR); + + context = &pGSess->gss_context; + maj_stat = gss_unwrap(&min_stat, *context, &xmit_buf, &msg_buf, + &conf_state, (gss_qop_t *) NULL); + if(maj_stat != GSS_S_COMPLETE) { + gssutil.display_status((char*)"unsealing message", maj_stat, min_stat); + if(xmit_buf.value) { + free(xmit_buf.value); + xmit_buf.value = 0; + } + ABORT_FINALIZE(RS_RET_GSS_ERR); + } + if (xmit_buf.value) { + free(xmit_buf.value); + xmit_buf.value = 0; + } + + *piLenRcvd = msg_buf.length < buf_len ? msg_buf.length : buf_len; + memcpy(buf, msg_buf.value, *piLenRcvd); + gss_release_buffer(&min_stat, &msg_buf); + +finalize_it: + RETiRet; +} + + +/* Takes care of cleaning up gssapi stuff and then calls + * TCPSessClose(). + */ +void TCPSessGSSClose(tcps_sess_t* pSess) +{ + OM_uint32 maj_stat, min_stat; + gss_ctx_id_t *context; + gss_sess_t *pGSess; + + assert(pSess->pUsr != NULL); + pGSess = (gss_sess_t*) pSess->pUsr; + + context = &pGSess->gss_context; + maj_stat = gss_delete_sec_context(&min_stat, context, GSS_C_NO_BUFFER); + if (maj_stat != GSS_S_COMPLETE) + gssutil.display_status((char*)"deleting context", maj_stat, min_stat); + *context = GSS_C_NO_CONTEXT; + pGSess->gss_flags = 0; + pGSess->allowedMethods = 0; + + tcps_sess.Close(pSess); +} + + +/* Counterpart of TCPSessGSSInit(). This is called to exit the GSS system + * at all. It is a server-based session exit. + */ +static rsRetVal +TCPSessGSSDeinit(void) +{ + DEFiRet; + OM_uint32 maj_stat, min_stat; + + if (gss_server_creds != GSS_C_NO_CREDENTIAL) { + maj_stat = gss_release_cred(&min_stat, &gss_server_creds); + if (maj_stat != GSS_S_COMPLETE) + gssutil.display_status((char*)"releasing credentials", maj_stat, min_stat); + } + RETiRet; +} + + +#if 0 /* can be used to integrate into new config system */ +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf +#endif + +/* This function is called to gather input. + */ +BEGINrunInput +CODESTARTrunInput + /* This will fail if the priviledges are dropped. Should be + * moved to the '*activateCnfPrePrivDrop' section eventually. + */ + actGSSListener(srvPort); + + iRet = tcpsrv.Run(pOurTcpsrv); +ENDrunInput + + +/* initialize and return if will run or not */ +BEGINwillRun +CODESTARTwillRun + if(srvPort == NULL) + ABORT_FINALIZE(RS_RET_NO_RUN); + + net.PrintAllowedSenders(2); /* TCP */ + net.PrintAllowedSenders(3); /* GSS */ +finalize_it: +ENDwillRun + + + +BEGINmodExit +CODESTARTmodExit + if(pOurTcpsrv != NULL) + iRet = tcpsrv.Destruct(&pOurTcpsrv); + TCPSessGSSDeinit(); + + /* release objects we used */ + objRelease(tcps_sess, LM_TCPSRV_FILENAME); + objRelease(tcpsrv, LM_TCPSRV_FILENAME); + objRelease(gssutil, LM_GSSUTIL_FILENAME); + objRelease(glbl, CORE_COMPONENT); + objRelease(netstrm, LM_NETSTRM_FILENAME); + objRelease(net, LM_NET_FILENAME); + objRelease(prop, CORE_COMPONENT); +ENDmodExit + + +BEGINafterRun +CODESTARTafterRun + /* do cleanup here */ + net.clearAllowedSenders((uchar*)"TCP"); + net.clearAllowedSenders((uchar*)"GSS"); +ENDafterRun + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + if (gss_listen_service_name != NULL) { + free(gss_listen_service_name); + gss_listen_service_name = NULL; + } + if (pszLstnPortFileName != NULL) { + free(pszLstnPortFileName); + pszLstnPortFileName = NULL; + } + bPermitPlainTcp = 0; + iTCPSessMax = 200; + bKeepAlive = 0; + return RS_RET_OK; +} + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current definition */ +CODEmodInit_QueryRegCFSLineHdlr + pOurTcpsrv = NULL; + /* request objects we use */ + CHKiRet(objUse(tcps_sess, LM_TCPSRV_FILENAME)); + CHKiRet(objUse(tcpsrv, LM_TCPSRV_FILENAME)); + CHKiRet(objUse(gssutil, LM_GSSUTIL_FILENAME)); + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(netstrm, LM_NETSTRM_FILENAME)); + CHKiRet(objUse(net, LM_NET_FILENAME)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + + /* register config file handlers */ + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputgssserverpermitplaintcp", 0, eCmdHdlrBinary, + NULL, &bPermitPlainTcp, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputgssserverrun", 0, eCmdHdlrGetWord, + addGSSListener, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputgssserverservicename", 0, eCmdHdlrGetWord, + NULL, &gss_listen_service_name, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputgsslistenportfilename", 0, eCmdHdlrGetWord, + NULL, &pszLstnPortFileName, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputgssservermaxsessions", 0, eCmdHdlrInt, + NULL, &iTCPSessMax, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputgssserverkeepalive", 0, eCmdHdlrBinary, + NULL, &bKeepAlive, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit + +/* vim:set ai: + */ diff --git a/plugins/imjournal/Makefile.am b/plugins/imjournal/Makefile.am new file mode 100644 index 0000000..5306130 --- /dev/null +++ b/plugins/imjournal/Makefile.am @@ -0,0 +1,12 @@ +pkglib_LTLIBRARIES = imjournal.la + +if IMJOURNAL_USE_DUMMY +imjournal_la_SOURCES = dummy.c +imjournal_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) -D MODNAME=imjournal +imjournal_la_LDFLAGS = -module -avoid-version +else +imjournal_la_SOURCES = imjournal.c +imjournal_la_CPPFLAGS = $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) $(LIBSYSTEMD_JOURNAL_CFLAGS) +imjournal_la_LDFLAGS = -module -avoid-version +imjournal_la_LIBADD = $(LIBSYSTEMD_JOURNAL_LIBS) +endif diff --git a/plugins/imjournal/Makefile.in b/plugins/imjournal/Makefile.in new file mode 100644 index 0000000..ff4bd52 --- /dev/null +++ b/plugins/imjournal/Makefile.in @@ -0,0 +1,816 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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\ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/imjournal/dummy.c b/plugins/imjournal/dummy.c new file mode 100644 index 0000000..fe8c249 --- /dev/null +++ b/plugins/imjournal/dummy.c @@ -0,0 +1,171 @@ +/* a dummy module to be loaded if we cannot build this module, but + * configure required it to be "optional". + * + * Copyright 2020 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include <pthread.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" + +#define MODULE_NAME(x) #x + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME(MODULE_NAME(MODNAME)) + + +DEF_OMOD_STATIC_DATA + +/* config variables */ +typedef struct _instanceData { + char *dummy; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +struct modConfData_s { +}; + +/* modConf ptr to use for the current load process */ +static modConfData_t *loadModConf = NULL; +/* modConf ptr to use for the current exec process */ +static modConfData_t *runModConf = NULL; + + + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINsetModCnf +CODESTARTsetModCnf + (void) lst; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME)); +ENDsetModCnf + + +BEGINnewActInst +CODESTARTnewActInst + (void) pData; + (void) ppModData; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME)); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +BEGINdoAction_NoStrings +CODESTARTdoAction + (void) pMsgData; +ENDdoAction + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + /* we only support the current interface specification */ + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + dbgprintf("dummy module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git a/plugins/imjournal/imjournal.c b/plugins/imjournal/imjournal.c new file mode 100644 index 0000000..cda9b4b --- /dev/null +++ b/plugins/imjournal/imjournal.c @@ -0,0 +1,1496 @@ +/* The systemd journal import module + * + * To test under Linux: + * emmit log message into systemd journal + * + * Copyright (C) 2008-2019 Adiscon GmbH + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <dirent.h> +#include <assert.h> +#include <string.h> +#include <stdarg.h> +#include <ctype.h> +#include <stdlib.h> +#include <time.h> +#include <sys/poll.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> +#include <errno.h> +#include <systemd/sd-journal.h> +#include <fcntl.h> + +#include "dirty.h" +#include "cfsysline.h" +#include "obj.h" +#include "msg.h" +#include "module-template.h" +#include "datetime.h" +#include "net.h" +#include "glbl.h" +#include "statsobj.h" +#include "ruleset.h" +#include "parser.h" +#include "prop.h" +#include "errmsg.h" +#include "srUtils.h" +#include "unicode-helper.h" +#include "ratelimit.h" + + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imjournal") + +/* Module static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(datetime) +DEFobjCurrIf(glbl) +DEFobjCurrIf(parser) +DEFobjCurrIf(prop) +DEFobjCurrIf(net) +DEFobjCurrIf(ruleset) +DEFobjCurrIf(statsobj) + +/* Module static data */ +typedef struct journal_etry_s { + pthread_t tid; /* the worker's thread ID */ + ruleset_t *pBindRuleset; + char* stateFile; + struct journalContext_s *journalContext; + struct journal_etry_s *next; +} journal_etry_t; +static journal_etry_t *journal_root = NULL; +static int n_journal = 0; + +struct modConfData_s { + rsconf_t *pConf; + instanceConf_t *root, *tail; +}; + +static struct configSettings_s { + char *stateFile; + int fCreateMode; /* default mode to use when creating new files, e.g. stateFile */ + int iPersistStateInterval; + unsigned int ratelimitInterval; + unsigned int ratelimitBurst; + int bIgnorePrevious; + int bIgnoreNonValidStatefile; + int iDfltSeverity; + int iDfltFacility; + int bUseJnlPID; + char *usePid; + int bWorkAroundJournalBug; /* deprecated, left for backwards compatibility only */ + int bFsync; + int bRemote; + char *dfltTag; +} cs; + +static rsRetVal facilityHdlr(uchar **pp, void *pVal); + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "statefile", eCmdHdlrGetWord, 0 }, + { "filecreatemode", eCmdHdlrFileCreateMode, 0 }, + { "ratelimit.interval", eCmdHdlrInt, 0 }, + { "ratelimit.burst", eCmdHdlrInt, 0 }, + { "persiststateinterval", eCmdHdlrInt, 0 }, + { "ignorepreviousmessages", eCmdHdlrBinary, 0 }, + { "ignorenonvalidstatefile", eCmdHdlrBinary, 0 }, + { "defaultseverity", eCmdHdlrSeverity, 0 }, + { "defaultfacility", eCmdHdlrString, 0 }, + { "usepidfromsystem", eCmdHdlrBinary, 0 }, + { "usepid", eCmdHdlrString, 0 }, + { "workaroundjournalbug", eCmdHdlrBinary, 0 }, + { "fsync", eCmdHdlrBinary, 0 }, + { "remote", eCmdHdlrBinary, 0 }, + { "defaulttag", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "ruleset", eCmdHdlrString, 0 }, + { "main", eCmdHdlrBinary, 0 }, +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; + +struct instanceConf_s { + struct instanceConf_s *next; + char *stateFile; + uchar *pszBindRuleset; + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + int bMain; +}; + +#include "im-helper.h" /* must be included AFTER the type definitions! */ + +#define DFLT_persiststateinterval 10 +#define DFLT_SEVERITY pri2sev(LOG_NOTICE) +#define DFLT_FACILITY pri2fac(LOG_USER) +#define DFLT_TAG "journal" + +static int bLegacyCnfModGlobalsPermitted = 1;/* are legacy module-global config parameters permitted? */ + +static prop_t *pInputName = NULL; +/* there is only one global inputName for all messages generated by this module */ +static prop_t *pLocalHostIP = NULL; /* a pseudo-constant propterty for 127.0.0.1 */ +static const char *pidFieldName; /* read-only after startup */ +static int bPidFallBack; +static ratelimit_t *ratelimiter = NULL; +static struct { + statsobj_t *stats; + STATSCOUNTER_DEF(ctrSubmitted, mutCtrSubmitted) + STATSCOUNTER_DEF(ctrRead, mutCtrRead); + STATSCOUNTER_DEF(ctrDiscarded, mutCtrDiscarded); + STATSCOUNTER_DEF(ctrFailed, mutCtrFailed); + STATSCOUNTER_DEF(ctrPollFailed, mutCtrPollFailed); + STATSCOUNTER_DEF(ctrRotations, mutCtrRotations); + STATSCOUNTER_DEF(ctrRecoveryAttempts, mutCtrRecoveryAttempts); + uint64 ratelimitDiscardedInInterval; + uint64 diskUsageBytes; +} statsCounter; +struct journalContext_s { /* structure encapsulating all the journald_API-related stuff */ + sd_journal *j; /* main object encapsulating journal for us, has to be used in every sd_journal*() call */ + sbool reloaded; /* we have reloaded journal after detecting rotation */ + sbool atHead; /* true if we are at start of journal (no seek was done) */ + char *cursor; /* should point to last valid journald entry we processed */ +}; + +#define MAX_JOURNAL 8 +static struct journalContext_s journalContextArray[MAX_JOURNAL] = { + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for run process */ + +#define J_PROCESS_PERIOD 1024 /* Call sd_journal_process() every 1,024 records */ + +static rsRetVal persistJournalState(struct journalContext_s *journalContext, char* stateFile); +static rsRetVal loadJournalState(struct journalContext_s *journalContext, char* stateFile); + +static rsRetVal openJournal(struct journalContext_s *journalContext) { + + int r; + DEFiRet; + + if (journalContext->j) { + LogMsg(0, RS_RET_OK_WARN, LOG_WARNING, "imjournal: opening journal when already opened.\n"); + } + if ((r = sd_journal_open(&journalContext->j, cs.bRemote? 0 : SD_JOURNAL_LOCAL_ONLY)) < 0) { + LogError(-r, RS_RET_IO_ERROR, "imjournal: sd_journal_open() failed"); + iRet = RS_RET_IO_ERROR; + } + if ((r = sd_journal_set_data_threshold(journalContext->j, glbl.GetMaxLine(runModConf->pConf))) < 0) { + LogError(-r, RS_RET_IO_ERROR, "imjournal: sd_journal_set_data_threshold() failed"); + iRet = RS_RET_IO_ERROR; + } + journalContext->atHead = 1; + RETiRet; +} + +/* trySave shoulod only be true if there is no journald error preceeding this call */ +static void closeJournal(struct journalContext_s *journalContext) { + if (!journalContext->j) { + LogMsg(0, RS_RET_OK_WARN, LOG_WARNING, "imjournal: closing NULL journal.\n"); + } + sd_journal_close(journalContext->j); + journalContext->j = NULL; /* setting to NULL here as journald API will not do that for us... */ +} + +static int journalGetData(struct journalContext_s *journalContext, const char *field, const void **data, size_t *length) +{ + int ret; + + ret = sd_journal_get_data(journalContext->j, field, data, length); + if (ret == -EADDRNOTAVAIL) { + LogError(-ret, RS_RET_ERR, "imjournal: Tried to get data without a 'next' call.\n"); + if ((ret = sd_journal_next(journalContext->j)) < 0) { + LogError(-ret, RS_RET_ERR, "imjournal: sd_journal_next() failed\n"); + } else { + ret = sd_journal_get_data(journalContext->j, field, data, length); + } + } + + return ret; +} + + +/* ugly workaround to handle facility numbers; values + * derived from names need to be eight times smaller, + * i.e.: 0..23 + */ +static rsRetVal facilityHdlr(uchar **pp, void *pVal) +{ + DEFiRet; + char *p; + + skipWhiteSpace(pp); + p = (char *) *pp; + + if (isdigit((int) *p)) { + *((int *) pVal) = (int) strtol(p, (char **) pp, 10); + } else { + int len; + syslogName_t *c; + + for (len = 0; p[len] && !isspace((int) p[len]); len++) + /* noop */; + for (c = syslogFacNames; c->c_name; c++) { + if (!strncasecmp(p, (char *) c->c_name, len)) { + *((int *) pVal) = pri2fac(c->c_val); + break; + } + } + *pp += len; + } + + RETiRet; +} + + +/* Currently just replaces '\0' with ' '. Not doing so would cause + * the value to be truncated. New space is allocated for the resulting + * string. + */ +static rsRetVal +sanitizeValue(const char *in, size_t len, char **out) +{ + char *buf, *p; + DEFiRet; + + CHKmalloc(p = buf = malloc(len + 1)); + memcpy(buf, in, len); + buf[len] = '\0'; + + while ((p = memchr(p, '\0', len + buf - p)) != NULL) { + *p++ = ' '; + } + + *out = buf; + +finalize_it: + RETiRet; +} + + +/* Read JSON part of single journald message and return it as JSON object + */ +static rsRetVal +readJSONfromJournalMsg(struct journalContext_s *journalContext, struct fjson_object **json) +{ + DEFiRet; + const void *get; + const void *equal_sign; + struct fjson_object *jval; + size_t l; + long prefixlen = 0; + + CHKmalloc(*json = fjson_object_new_object()); + + SD_JOURNAL_FOREACH_DATA(journalContext->j, get, l) { + char *data; + char *name; + + /* locate equal sign, this is always present */ + equal_sign = memchr(get, '=', l); + + /* ... but we know better than to trust the specs */ + if (equal_sign == NULL) { + LogError(0, RS_RET_ERR, "SD_JOURNAL_FOREACH_DATA()" + "returned a malformed field (has no '='): '%s'", (char*)get); + continue; /* skip the entry */ + } + + /* get length of journal data prefix */ + prefixlen = ((char *)equal_sign - (char *)get); + + CHKmalloc(name = strndup(get, prefixlen)); + + prefixlen++; /* remove '=' */ + + CHKiRet_Hdlr(sanitizeValue(((const char *)get) + prefixlen, l - prefixlen, &data)) { + free (name); + FINALIZE; + } + + /* and save them to json object */ + jval = fjson_object_new_string((char *)data); + fjson_object_object_add(*json, name, jval); + free (data); + free (name); + } +finalize_it: + RETiRet; +} + + +/* Try to obtain current journald cursor and save it to journalContext struct. + */ +static rsRetVal +updateJournalCursor(struct journalContext_s *journalContext) +{ + DEFiRet; + char *c = NULL; + int r; + + if ((r = sd_journal_get_cursor(journalContext->j, &c)) < 0) { + LogError(-r, RS_RET_ERR, "imjournal: Could not get journald cursor!\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + /* save journal cursor (at this point we can be sure it is valid) */ + free(journalContext->cursor); + journalContext->cursor = c; +finalize_it: + RETiRet; +} + + +/* enqueue the the journal message into the message queue. + * The provided msg string is not freed - thus must be done + * by the caller. + */ +static rsRetVal +enqMsg(uchar *msg, uchar *pszTag, int iFacility, int iSeverity, struct timeval *tp, struct fjson_object *json, +int sharedJsonProperties, ruleset_t *pBindRuleset) +{ + struct syslogTime st; + smsg_t *pMsg; + size_t len; + DEFiRet; + + assert(msg != NULL); + assert(pszTag != NULL); + + if(tp == NULL) { + CHKiRet(msgConstruct(&pMsg)); + } else { + datetime.timeval2syslogTime(tp, &st, TIME_IN_LOCALTIME); + CHKiRet(msgConstructWithTime(&pMsg, &st, tp->tv_sec)); + } + MsgSetFlowControlType(pMsg, eFLOWCTL_LIGHT_DELAY); + MsgSetInputName(pMsg, pInputName); + len = strlen((char*)msg); + MsgSetRawMsg(pMsg, (char*)msg, len); + if(len > 0) + parser.SanitizeMsg(pMsg); + MsgSetMSGoffs(pMsg, 0); /* we do not have a header... */ + MsgSetRcvFrom(pMsg, glbl.GetLocalHostNameProp()); + MsgSetRcvFromIP(pMsg, pLocalHostIP); + MsgSetHOSTNAME(pMsg, glbl.GetLocalHostName(), ustrlen(glbl.GetLocalHostName())); + MsgSetTAG(pMsg, pszTag, ustrlen(pszTag)); + if (pBindRuleset != NULL) { + MsgSetRuleset(pMsg, pBindRuleset); + } + pMsg->iFacility = iFacility; + pMsg->iSeverity = iSeverity; + + if(json != NULL) { + msgAddJSON(pMsg, (uchar*)"!", json, 0, sharedJsonProperties); + } + + CHKiRet(ratelimitAddMsg(ratelimiter, NULL, pMsg)); + STATSCOUNTER_INC(statsCounter.ctrSubmitted, statsCounter.mutCtrSubmitted); + +finalize_it: + if (iRet == RS_RET_DISCARDMSG) { + STATSCOUNTER_INC(statsCounter.ctrDiscarded, statsCounter.mutCtrDiscarded); + } else if (iRet != RS_RET_OK) { + LogError(0, RS_RET_ERR, "imjournal: error during enqMsg().\n"); + } + + RETiRet; +} + + +/* Read journal log while data are available, each read() reads one journald record. + */ +static rsRetVal +readjournal(struct journalContext_s *journalContext, ruleset_t *pBindRuleset) +{ + DEFiRet; + + struct timeval tv; + uint64_t timestamp; + + struct fjson_object *json = NULL; + int r; + + /* Information from messages */ + char *message = NULL; + char *sys_iden; + char *sys_iden_help = NULL; + + const void *get; + const void *pidget; + size_t length; + size_t pidlength; + + int severity = cs.iDfltSeverity; + int facility = cs.iDfltFacility; + + /* Get message text */ + if (journalGetData(journalContext, "MESSAGE", &get, &length) < 0) { + CHKmalloc(message = strdup("")); + } else { + CHKiRet(sanitizeValue(((const char *)get) + 8, length - 8, &message)); + } + STATSCOUNTER_INC(statsCounter.ctrRead, statsCounter.mutCtrRead); + + /* Get message severity ("priority" in journald's terminology) */ + if (journalGetData(journalContext, "PRIORITY", &get, &length) >= 0) { + if (length == 10) { + severity = ((char *)get)[9] - '0'; + if (severity < 0 || 7 < severity) { + LogError(0, RS_RET_ERR, "imjournal: the value of the 'PRIORITY' field is " + "out of bounds: %d, resetting", severity); + severity = cs.iDfltSeverity; + } + } else { + LogError(0, RS_RET_ERR, "The value of the 'PRIORITY' field has an " + "unexpected length: %zu\n", length); + } + } + + /* Get syslog facility */ + if (journalGetData(journalContext, "SYSLOG_FACILITY", &get, &length) >= 0) { + // Note: the journal frequently contains invalid facilities! + if (length == 17 || length == 18) { + facility = ((char *)get)[16] - '0'; + if (length == 18) { + facility *= 10; + facility += ((char *)get)[17] - '0'; + } + if (facility < 0 || 23 < facility) { + DBGPRINTF("The value of the 'FACILITY' field is " + "out of bounds: %d, resetting\n", facility); + facility = cs.iDfltFacility; + } + } else { + DBGPRINTF("The value of the 'FACILITY' field has an " + "unexpected length: %zu value: '%s'\n", length, (const char*)get); + } + } + + /* Get message identifier, client pid and add ':' */ + if (journalGetData(journalContext, "SYSLOG_IDENTIFIER", &get, &length) >= 0) { + CHKiRet(sanitizeValue(((const char *)get) + 18, length - 18, &sys_iden)); + } else if (journalGetData(journalContext, "_COMM", &get, &length) >= 0) { + CHKiRet(sanitizeValue(((const char *)get) + 6, length - 6, &sys_iden)); + } else { + CHKmalloc(sys_iden = strdup(cs.dfltTag)); + } + + /* trying to get PID, default is "SYSLOG_PID" property */ + if (journalGetData(journalContext, pidFieldName, &pidget, &pidlength) >= 0) { + char *sys_pid; + int val_ofs; + + val_ofs = strlen(pidFieldName) + 1; /* name + '=' */ + CHKiRet_Hdlr(sanitizeValue(((const char *)pidget) + val_ofs, pidlength - val_ofs, &sys_pid)) { + free (sys_iden); + FINALIZE; + } + r = asprintf(&sys_iden_help, "%s[%s]:", sys_iden, sys_pid); + free (sys_pid); + } else { + /* this is fallback, "SYSLOG_PID" doesn't exist so trying to get "_PID" property */ + if (bPidFallBack && journalGetData(journalContext, "_PID", &pidget, &pidlength) >= 0) { + char *sys_pid; + int val_ofs; + + val_ofs = strlen("_PID") + 1; /* name + '=' */ + CHKiRet_Hdlr(sanitizeValue(((const char *)pidget) + val_ofs, pidlength - val_ofs, &sys_pid)) { + free (sys_iden); + FINALIZE; + } + r = asprintf(&sys_iden_help, "%s[%s]:", sys_iden, sys_pid); + free (sys_pid); + } else { + /* there is no PID property available */ + r = asprintf(&sys_iden_help, "%s:", sys_iden); + } + } + + free (sys_iden); + + if (-1 == r) { + STATSCOUNTER_INC(statsCounter.ctrFailed, statsCounter.mutCtrFailed); + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + + CHKiRet(readJSONfromJournalMsg(journalContext, &json)); + + /* calculate timestamp */ + if (sd_journal_get_realtime_usec(journalContext->j, ×tamp) >= 0) { + tv.tv_sec = timestamp / 1000000; + tv.tv_usec = timestamp % 1000000; + } + + iRet = updateJournalCursor(journalContext); + + /* submit message */ + enqMsg((uchar *)message, (uchar *) sys_iden_help, facility, severity, &tv, json, 0, pBindRuleset); + +finalize_it: + free(sys_iden_help); + free(message); + RETiRet; +} + + +/* This function saves journal cursor into state file. + * It must be checked that stateFile is configured prior to calling this. + */ +static rsRetVal +persistJournalState(struct journalContext_s *journalContext, char* stateFile) +{ + DEFiRet; + char tmp_sf[MAXFNAME]; + int fd = -1; + size_t len; + ssize_t wr_ret; + + DBGPRINTF("Persisting journal position, cursor: %s, at head? %d\n", + journalContext->cursor, journalContext->atHead); + + /* first check that we have valid cursor */ + if (!journalContext->cursor) { + DBGPRINTF("Journal cursor is not valid, ok...\n"); + ABORT_FINALIZE(RS_RET_OK); + } + + /* we create a temporary name by adding a ".tmp" + * suffix to the end of our state file's name + * + * we use snprintf() to safely honor the boundaries + * of the temporary state file name buffer by using + * a precision specifier, which will limit the number + * of bytes taken from stateFile to what will fit + * + * TODO: figure out a better way to avoid the PATH_MAX + * problem. The truncated stateFile with .tmp at the + * end is not optimal + */ +#define IM_SF_TMP_SUFFIX ".tmp" + snprintf(tmp_sf, sizeof(tmp_sf), "%.*s%s", + /* this calculates the max size for state file name, note that + * sizeof() NOT -1 is intentional - it reserves spaces for the + * NUL terminator. + */ + (int)(sizeof(tmp_sf) - sizeof(IM_SF_TMP_SUFFIX)), + stateFile, IM_SF_TMP_SUFFIX); + + fd = open((char*) tmp_sf, O_WRONLY|O_CREAT|O_CLOEXEC, cs.fCreateMode); + if (fd == -1) { + LogError(errno, RS_RET_FILE_OPEN_ERROR, "imjournal: open() failed for path: '%s'", tmp_sf); + ABORT_FINALIZE(RS_RET_FILE_OPEN_ERROR); + } + + len = strlen(journalContext->cursor); + wr_ret = write(fd, journalContext->cursor, len); + if (wr_ret != (ssize_t)len) { + LogError(errno, RS_RET_IO_ERROR, "imjournal: failed to save cursor to: '%s'," + "write returned %zd, expected %zu", cs.stateFile, wr_ret, len); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + /* change the name of the file to the configured one */ + if (rename(tmp_sf, stateFile) < 0) { + LogError(errno, iRet, "imjournal: rename() failed for new path: '%s'", stateFile); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + if (cs.bFsync) { + if (fsync(fd) != 0) { + LogError(errno, RS_RET_IO_ERROR, "imjournal: fsync on '%s' failed", stateFile); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + /* In order to guarantee physical write we need to force parent sync as well */ + DIR *wd; + if (!(wd = opendir((char *)glbl.GetWorkDir(runModConf->pConf)))) { + LogError(errno, RS_RET_IO_ERROR, "imjournal: failed to open '%s' directory", + glbl.GetWorkDir(runModConf->pConf)); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + if (fsync(dirfd(wd)) != 0) { + LogError(errno, RS_RET_IO_ERROR, "imjournal: fsync on '%s' failed", + glbl.GetWorkDir(runModConf->pConf)); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + closedir(wd); + } + + DBGPRINTF("Persisted journal to '%s'\n", stateFile); + +finalize_it: + if (fd != -1) { + if (close(fd) == -1) { + LogError(errno, RS_RET_IO_ERROR, "imjournal: close() failed for path: '%s'", tmp_sf); + iRet = RS_RET_IO_ERROR; + } + } + RETiRet; +} + + +static rsRetVal skipOldMessages(struct journalContext_s *journalContext); + +static rsRetVal +handleRotation(struct journalContext_s *journalContext, char* stateFile) +{ + DEFiRet; + int r; + + LogMsg(0, RS_RET_OK, LOG_NOTICE, "imjournal: journal files changed, reloading...\n"); + STATSCOUNTER_INC(statsCounter.ctrRotations, statsCounter.mutCtrRotations); + closeJournal(journalContext); + + iRet = openJournal(journalContext); + if (iRet != RS_RET_OK) { + ABORT_FINALIZE(RS_RET_ERR); + } + + /* outside error scenarios we should always have a cursor available at this point */ + if (!journalContext->cursor) + { + if (stateFile) { + iRet = loadJournalState(journalContext, stateFile); + } + else if (cs.bIgnorePrevious) { + /* Seek to the very end of the journal and ignore all older messages. */ + iRet = skipOldMessages(journalContext); + } + FINALIZE; + } + + if (sd_journal_seek_cursor(journalContext->j, journalContext->cursor) != 0) { + LogError(0, RS_RET_ERR, "imjournal: " + "couldn't seek to cursor `%s'\n", journalContext->cursor); + iRet = RS_RET_ERR; + } + journalContext->atHead = 0; + /* Need to advance because cursor points at last processed message */ + if ((r = sd_journal_next(journalContext->j)) < 0) { + LogError(-r, RS_RET_ERR, "imjournal: sd_journal_next() failed"); + iRet = RS_RET_ERR; + } + +finalize_it: + journalContext->reloaded = 1; + RETiRet; +} + +#define POLL_TIMEOUT 900000 /* timeout for poll is 900ms */ + +static rsRetVal +pollJournal(struct journalContext_s *journalContext, char* stateFile) +{ + DEFiRet; + int err; + + err = sd_journal_wait(journalContext->j, POLL_TIMEOUT); + if (err == SD_JOURNAL_INVALIDATE && !journalContext->reloaded) { + CHKiRet(handleRotation(journalContext, stateFile)); + } + else { + journalContext->reloaded = 0; + } + +finalize_it: + RETiRet; +} + + +static rsRetVal +skipOldMessages(struct journalContext_s *journalContext) +{ + int r; + DEFiRet; + + if ((r = sd_journal_seek_tail(journalContext->j)) < 0) { + LogError(-r, RS_RET_ERR, + "imjournal: sd_journal_seek_tail() failed"); + ABORT_FINALIZE(RS_RET_ERR); + } + journalContext->atHead = 0; + if ((r = sd_journal_previous(journalContext->j)) < 0) { + LogError(-r, RS_RET_ERR, + "imjournal: sd_journal_previous() failed"); + ABORT_FINALIZE(RS_RET_ERR); + } + +finalize_it: + RETiRet; +} + +/* This function loads a journal cursor from the state file. + */ +static rsRetVal +loadJournalState(struct journalContext_s *journalContext, char* stateFile) +{ + DEFiRet; + int r; + FILE *r_sf; + + DBGPRINTF("Loading journal position, at head? %d, reloaded? %d\n", + journalContext->atHead, journalContext->reloaded); + + /* if state file not exists (on very first run), skip */ + if (access(stateFile, F_OK|R_OK) == -1 && errno == ENOENT) { + if (cs.bIgnorePrevious) { + /* Seek to the very end of the journal and ignore all older messages. */ + skipOldMessages(journalContext); + } + LogMsg(errno, RS_RET_FILE_NOT_FOUND, LOG_NOTICE, "imjournal: No statefile exists, " + "%s will be created (ignore if this is first run)", stateFile); + FINALIZE; + } + + if ((r_sf = fopen(stateFile, "rb")) != NULL) { + char readCursor[128 + 1]; + if (fscanf(r_sf, "%128s\n", readCursor) != EOF) { + if (sd_journal_seek_cursor(journalContext->j, readCursor) != 0) { + LogError(0, RS_RET_ERR, "imjournal: " + "couldn't seek to cursor `%s'\n", readCursor); + iRet = RS_RET_ERR; + } else { + journalContext->atHead = 0; + char * tmp_cursor = NULL; + sd_journal_next(journalContext->j); + /* + * This is resolving the situation when system is after reboot and boot_id + * doesn't match so cursor pointing into "future". + * Usually sd_journal_next jump to head of journal due to journal aproximation, + * but when system time goes backwards and cursor is still + invalid, rsyslog stops logging. + * We use sd_journal_get_cursor to validate our cursor. + * When cursor is invalid we are trying to jump to the head of journal + * This problem with time should not affect persistent journal, + * but if cursor has been intentionally compromised it could stop logging even + * with persistent journal. + * */ + if ((r = sd_journal_get_cursor(journalContext->j, &tmp_cursor)) < 0) { + LogError(-r, RS_RET_IO_ERROR, "imjournal: " + "loaded invalid cursor, seeking to the head of journal\n"); + if ((r = sd_journal_seek_head(journalContext->j)) < 0) { + LogError(-r, RS_RET_ERR, "imjournal: " + "sd_journal_seek_head() failed, when cursor is invalid\n"); + iRet = RS_RET_ERR; + } + journalContext->atHead = 1; + } + free(tmp_cursor); + } + } else { + LogError(0, RS_RET_IO_ERROR, "imjournal: " + "fscanf on state file `%s' failed\n", stateFile); + iRet = RS_RET_IO_ERROR; + } + + fclose(r_sf); + + if (iRet != RS_RET_OK && cs.bIgnoreNonValidStatefile) { + /* ignore state file errors */ + iRet = RS_RET_OK; + LogError(0, NO_ERRCODE, "imjournal: ignoring invalid state file %s", stateFile); + if (cs.bIgnorePrevious) { + skipOldMessages(journalContext); + } + } + } else { + LogError(0, RS_RET_FOPEN_FAILURE, "imjournal: open on state file `%s' failed\n", stateFile); + if (cs.bIgnorePrevious) { + /* Seek to the very end of the journal and ignore all older messages. */ + skipOldMessages(journalContext); + } + } + +finalize_it: + RETiRet; +} + +static void +tryRecover(struct journalContext_s *journalContext) { + LogMsg(0, RS_RET_OK, LOG_INFO, "imjournal: trying to recover from journal error"); + STATSCOUNTER_INC(statsCounter.ctrRecoveryAttempts, statsCounter.mutCtrRecoveryAttempts); + closeJournal(journalContext); + srSleep(0, 200000); // do not hammer machine with too-frequent retries + openJournal(journalContext); +} + +static rsRetVal +addListner(instanceConf_t *inst, u_int8_t index) +{ + DEFiRet; + if (index >= MAX_JOURNAL) { + iRet = RS_RET_NO_MORE_DATA; + RETiRet; + } + + journal_etry_t *etry; + CHKmalloc(etry = (journal_etry_t*) calloc(1, sizeof(journal_etry_t))); + etry->journalContext = &journalContextArray[index]; + if (inst) { + etry->pBindRuleset = inst->pBindRuleset; + etry->stateFile = inst->stateFile; + } + etry->next = journal_root; + journal_root = etry; + ++n_journal; + +finalize_it: + if(iRet != RS_RET_OK) { + LogError(0, NO_ERRCODE, "imjournal: error %d trying to add listener", iRet); + free(etry); + } + RETiRet; +} + + +static rsRetVal +doRun(journal_etry_t const* etry) +{ + DEFiRet; + uint64_t count = 0; + char* stateFile = cs.stateFile; + if (etry->stateFile) { + stateFile = etry->stateFile; + } + + if (stateFile) { + /* Load our position in the journal from the state file. */ + CHKiRet(loadJournalState(etry->journalContext, stateFile)); + } else if (cs.bIgnorePrevious) { + /* Seek to the very end of the journal and ignore all older messages. */ + skipOldMessages(etry->journalContext); + } + + if (cs.dfltTag == NULL) { + cs.dfltTag = strdup(DFLT_TAG); + } + + if (cs.usePid && (strcmp(cs.usePid, "system") == 0)) { + pidFieldName = "_PID"; + bPidFallBack = 0; + } else if (cs.usePid && (strcmp(cs.usePid, "syslog") == 0)) { + pidFieldName = "SYSLOG_PID"; + bPidFallBack = 0; + } else { + pidFieldName = "SYSLOG_PID"; + bPidFallBack = 1; + if (cs.usePid && (strcmp(cs.usePid, "both") != 0)) { + LogError(0, RS_RET_OK, "option \"usepid\"" + " should contain one of system|syslog|both and no '%s'",cs.usePid); + } + } + + /* this is an endless loop - it is terminated when the thread is + * signalled to do so. This, however, is handled by the framework. + */ + while (glbl.GetGlobalInputTermState() == 0) { + int r; + + r = sd_journal_next(etry->journalContext->j); + if (r < 0) { + LogError(-r, RS_RET_ERR, "imjournal: sd_journal_next() failed"); + tryRecover(etry->journalContext); + continue; + } + + if (r == 0) { + if (etry->journalContext->atHead) { + LogMsg(0, RS_RET_OK, LOG_WARNING, "imjournal: " + "Journal indicates no msgs when positioned at head.\n"); + } + /* No new messages, wait for activity. */ + if (pollJournal(etry->journalContext, stateFile) != RS_RET_OK && + !etry->journalContext->reloaded) { + tryRecover(etry->journalContext); + } + continue; + } + + /* + * update journal disk usage before reading the new message. + */ + const int e = sd_journal_get_usage(etry->journalContext->j, (uint64_t *)&statsCounter.diskUsageBytes); + if (e < 0) { + LogError(-e, RS_RET_ERR, "imjournal: sd_get_usage() failed"); + } + + if (readjournal(etry->journalContext, etry->pBindRuleset) != RS_RET_OK) { + tryRecover(etry->journalContext); + continue; + } + + count++; + etry->journalContext->atHead = 0; + if (stateFile) { /* can't persist without a state file */ + /* TODO: This could use some finer metric. */ + if ((count % cs.iPersistStateInterval) == 0) { + persistJournalState(etry->journalContext, stateFile); + } + } + } +finalize_it: + RETiRet; +} + +static void * +RunServerThread(void *myself) +{ + DEFiRet; + journal_etry_t *const etry = (journal_etry_t*) myself; + iRet = doRun(etry); + if(iRet != RS_RET_OK) { + LogError(0, iRet, "imjournal: error while stopping journal processing; " + "rsyslog may hang on shutdown"); + } + return NULL; +} + +/* support for running multiple servers on multiple threads (one server per thread) */ +static void +startSrvWrkr(journal_etry_t *const etry) +{ + int r; + pthread_attr_t sessThrdAttr; + + /* We need to temporarily block all signals because the new thread + * inherits our signal mask. There is a race if we do not block them + * now, and we have seen in practice that this race causes grief. + * So we 1. save the current set, 2. block evertyhing, 3. start + * threads, and 4 reset the current set to saved state. + * rgerhards, 2019-08-16 + */ + sigset_t sigSet, sigSetSave; + sigfillset(&sigSet); + /* enable signals we still need */ + sigdelset(&sigSet, SIGTTIN); + sigdelset(&sigSet, SIGSEGV); + pthread_sigmask(SIG_SETMASK, &sigSet, &sigSetSave); + + pthread_attr_init(&sessThrdAttr); + pthread_attr_setstacksize(&sessThrdAttr, 4096*1024); + r = pthread_create(&etry->tid, &sessThrdAttr, RunServerThread, etry); + if(r != 0) { + LogError(r, NO_ERRCODE, "imjournal: error creating imjournal thread"); + /* we do NOT abort, as other servers may run - after all, we logged an error */ + } + pthread_attr_destroy(&sessThrdAttr); + pthread_sigmask(SIG_SETMASK, &sigSetSave, NULL); +} + +/* stop server worker thread + */ +static void +stopSrvWrkr(journal_etry_t *const etry) +{ + DBGPRINTF("Wait for thread shutdown etry %p\n", etry); + pthread_kill(etry->tid, SIGTTIN); + pthread_join(etry->tid, NULL); + DBGPRINTF("input %p terminated\n", etry); +} + +BEGINrunInput +CODESTARTrunInput + CHKiRet(ratelimitNew(&ratelimiter, "imjournal", NULL)); + dbgprintf("imjournal: ratelimiting burst %u, interval %u\n", cs.ratelimitBurst, + cs.ratelimitInterval); + ratelimitSetLinuxLike(ratelimiter, cs.ratelimitInterval, cs.ratelimitBurst); + ratelimitSetNoTimeCache(ratelimiter); + + /* handling old "usepidfromsystem" option */ + if (cs.bUseJnlPID != -1) { + free(cs.usePid); + cs.usePid = strdup("system"); + LogError(0, RS_RET_DEPRECATED, + "\"usepidfromsystem\" is deprecated, use \"usepid\" instead"); + } + + journal_etry_t *etry = journal_root->next; + while(etry != NULL) { + startSrvWrkr(etry); + etry = etry->next; + } + + CHKiRet(doRun(journal_root)); + + etry = journal_root->next; + while(etry != NULL) { + stopSrvWrkr(etry); + etry = etry->next; + } + +finalize_it: +ENDrunInput + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + bLegacyCnfModGlobalsPermitted = 1; + + cs.bIgnoreNonValidStatefile = 1; + cs.iPersistStateInterval = DFLT_persiststateinterval; + cs.stateFile = NULL; + cs.fCreateMode = -1; + cs.ratelimitBurst = 20000; + cs.ratelimitInterval = 600; + cs.iDfltSeverity = DFLT_SEVERITY; + cs.iDfltFacility = DFLT_FACILITY; + cs.bUseJnlPID = -1; + cs.usePid = NULL; + cs.bWorkAroundJournalBug = 1; + cs.bFsync = 0; + cs.bRemote = 0; + cs.dfltTag = NULL; +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad + /* bad trick to handle old and new style config all in old-style var */ + if(cs.stateFile != NULL && cs.stateFile[0] != '/') { + char *new_stateFile; + if (-1 == asprintf(&new_stateFile, "%s/%s", + (char *)glbl.GetWorkDir(loadModConf->pConf), cs.stateFile)) { + LogError(0, RS_RET_OUT_OF_MEMORY, "imjournal: asprintf failed\n"); + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + free (cs.stateFile); + cs.stateFile = new_stateFile; + } +finalize_it: +ENDendCnfLoad + + +BEGINcheckCnf + instanceConf_t *inst; +CODESTARTcheckCnf + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + std_checkRuleset(pModConf, inst); + } +ENDcheckCnf + + +BEGINactivateCnf + instanceConf_t *inst; + instanceConf_t *root_inst = NULL; + u_int8_t index = 0; +CODESTARTactivateCnf + runModConf = pModConf; + + /* support statistic gathering */ + CHKiRet(statsobj.Construct(&(statsCounter.stats))); + CHKiRet(statsobj.SetName(statsCounter.stats, (uchar*)"imjournal")); + CHKiRet(statsobj.SetOrigin(statsCounter.stats, (uchar*)"imjournal")); + STATSCOUNTER_INIT(statsCounter.ctrSubmitted, statsCounter.mutCtrSubmitted); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("submitted"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrSubmitted))); + STATSCOUNTER_INIT(statsCounter.ctrRead, statsCounter.mutCtrRead); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("read"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrRead))); + STATSCOUNTER_INIT(statsCounter.ctrDiscarded, statsCounter.mutCtrDiscarded); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("discarded"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrDiscarded))); + STATSCOUNTER_INIT(statsCounter.ctrFailed, statsCounter.mutCtrFailed); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("failed"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrFailed))); + STATSCOUNTER_INIT(statsCounter.ctrPollFailed, statsCounter.mutCtrPollFailed); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("poll_failed"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrPollFailed))); + STATSCOUNTER_INIT(statsCounter.ctrRotations, statsCounter.mutCtrRotations); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("rotations"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrRotations))); + STATSCOUNTER_INIT(statsCounter.ctrRecoveryAttempts, statsCounter.mutCtrRecoveryAttempts); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("recovery_attempts"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrRecoveryAttempts))); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("ratelimit_discarded_in_interval"), + ctrType_Int, CTR_FLAG_NONE, &(statsCounter.ratelimitDiscardedInInterval))); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("disk_usage_bytes"), + ctrType_Int, CTR_FLAG_NONE, &(statsCounter.diskUsageBytes))); + CHKiRet(statsobj.ConstructFinalize(statsCounter.stats)); + /* end stats counter */ + + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + if(cs.stateFile) { + char *new_stateFile; + if (-1 == asprintf(&new_stateFile, "%s/%s", cs.stateFile, inst->pszBindRuleset)) { + LogError(0, RS_RET_OUT_OF_MEMORY, "imjournal: asprintf failed\n"); + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + free(inst->stateFile); + inst->stateFile = new_stateFile;; + } + + // Only the first input module with main enabled will be treated as + // the main process. + if (inst->bMain && root_inst == NULL) { + root_inst = inst; + } else { + if (addListner(inst, index++) != RS_RET_OK) { + LogError(0, RS_RET_NO_MORE_DATA, + "imjournal: Can only support up to %i journals\n", + MAX_JOURNAL); + ABORT_FINALIZE(RS_RET_NO_MORE_DATA); + } + } + } + + // Add all state files as a subfile of original cs.stateFile. + if(runModConf->root != NULL && cs.stateFile) { + char *new_stateFile; + if (-1 == asprintf(&new_stateFile, "%s/default", cs.stateFile)) { + LogError(0, RS_RET_OUT_OF_MEMORY, "imjournal: asprintf failed\n"); + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + + // TODO(need to delete old state file and create the folder. + DIR *stateDir; + if (!(stateDir = opendir(cs.stateFile))) { + remove(cs.stateFile); + mkdir(cs.stateFile, 0700); + } else { + closedir(stateDir); + } + + free(cs.stateFile); + cs.stateFile = new_stateFile;; + } + + // Default Handlers. Will be used as the main process if no `main` + // property is set in the input modules. + if (addListner(NULL, index++) != RS_RET_OK) { + LogError(0, RS_RET_NO_MORE_DATA, + "imjournal: Can only support up to %i journals\n", + MAX_JOURNAL); + ABORT_FINALIZE(RS_RET_NO_MORE_DATA); + } + + // Main process will be the top of journal_root. + if (root_inst != NULL){ + if (addListner(root_inst, index++) != RS_RET_OK) { + LogError(0, RS_RET_NO_MORE_DATA, + "imjournal: Can only support up to %i journals\n", + MAX_JOURNAL); + ABORT_FINALIZE(RS_RET_NO_MORE_DATA); + } + } + +finalize_it: +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; +CODESTARTfreeCnf + for(inst = pModConf->root ; inst != NULL ; ) { + free(inst->pszBindRuleset); + free(inst->stateFile); + del = inst; + inst = inst->next; + free(del); + } + free(cs.stateFile); + free(cs.usePid); + free(cs.dfltTag); + statsobj.Destruct(&(statsCounter.stats)); +ENDfreeCnf + +/* open journal */ +BEGINwillRun + journal_etry_t *etry = journal_root; +CODESTARTwillRun + while(etry != NULL) { + CHKiRet(openJournal(etry->journalContext)); + etry = etry->next; + } +finalize_it: +ENDwillRun + +/* close journal */ +BEGINafterRun + journal_etry_t *etry = journal_root; + journal_etry_t *del; +CODESTARTafterRun + while(etry != NULL) { + char *stateFile = cs.stateFile; + if (etry->stateFile) { + stateFile = etry->stateFile; + } + if (stateFile) { /* can't persist without a state file */ + persistJournalState(etry->journalContext, stateFile); + } + closeJournal(etry->journalContext); + free(etry->journalContext->cursor); + // TODO: check iRet, reprot error + del = etry; + etry = etry->next; + free(del); + } + + if (ratelimiter) { + ratelimitDestruct(ratelimiter); + } +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + if(pInputName != NULL) + prop.Destruct(&pInputName); + if(pLocalHostIP != NULL) + prop.Destruct(&pLocalHostIP); + + /* release objects we used */ + objRelease(statsobj, CORE_COMPONENT); + objRelease(glbl, CORE_COMPONENT); + objRelease(net, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); + objRelease(parser, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); +ENDmodExit + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if (pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if (Debug) { + dbgprintf("module (global) param blk for imjournal:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for (i = 0 ; i < modpblk.nParams ; ++i) { + if (!pvals[i].bUsed) + continue; + if (!strcmp(modpblk.descr[i].name, "persiststateinterval")) { + cs.iPersistStateInterval = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "statefile")) { + cs.stateFile = (char *)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "filecreatemode")) { + cs.fCreateMode = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "ratelimit.burst")) { + cs.ratelimitBurst = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "ratelimit.interval")) { + cs.ratelimitInterval = (unsigned int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "ignorepreviousmessages")) { + cs.bIgnorePrevious = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "ignorenonvalidstatefile")) { + cs.bIgnoreNonValidStatefile = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "defaultseverity")) { + cs.iDfltSeverity = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "defaultfacility")) { + /* ugly workaround to handle facility numbers; values + derived from names need to be eight times smaller */ + + char *fac, *p; + + fac = p = es_str2cstr(pvals[i].val.d.estr, NULL); + facilityHdlr((uchar **) &p, (void *) &cs.iDfltFacility); + free(fac); + } else if (!strcmp(modpblk.descr[i].name, "usepidfromsystem")) { + cs.bUseJnlPID = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "usepid")) { + cs.usePid = (char *)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if (!strcmp(modpblk.descr[i].name, "workaroundjournalbug")) { + cs.bWorkAroundJournalBug = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "fsync")) { + cs.bFsync = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "remote")) { + cs.bRemote = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "defaulttag")) { + cs.dfltTag = (char *)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("imjournal: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + + /* File create mode is not set */ + if (cs.fCreateMode == -1) { + const int fCreateMode = 0644; + LogMsg(0, RS_RET_OK_WARN, LOG_WARNING, "imjournal: filecreatemode is not set, " + "using default %04o", fCreateMode); + cs.fCreateMode = fCreateMode; + } + +finalize_it: + if (pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal ATTR_NONNULL(1) +createInstance(instanceConf_t **const pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->next = NULL; + inst->pBindRuleset = NULL; + inst->pszBindRuleset = NULL; + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = inst; + } else { + loadModConf->tail->next = inst; + loadModConf->tail = inst; + } + + *pinst = inst; +finalize_it: + if(iRet != RS_RET_OK) { + free(inst); + } + RETiRet; +} + + +BEGINnewInpInst + struct cnfparamvals *pvals; + instanceConf_t *inst; + int i; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imjournal)\n"); + + pvals = nvlstGetParams(lst, &inppblk, NULL); + if(pvals == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + DBGPRINTF("input param blk in imjournal:\n"); + cnfparamsPrint(&inppblk, pvals); + } + + CHKiRet(createInstance(&inst)); + + for(i = 0 ; i < inppblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(inppblk.descr[i].name, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "main")) { + inst->bMain = (int) pvals[i].val.d.n; + } else { + DBGPRINTF("program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + } +finalize_it: +CODE_STD_FINALIZERnewInpInst + if (pvals != NULL) + cnfparamvalsDestruct(pvals, &inppblk); +ENDnewInpInst + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +static inline void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + LogError(0, NO_ERRCODE, "imjournal: ruleset '%s' not found - " + "using default ruleset instead", inst->pszBindRuleset); +} + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(parser, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(net, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + + /* we need to create the inputName property (only once during our lifetime) */ + CHKiRet(prop.CreateStringProp(&pInputName, UCHAR_CONSTANT("imjournal"), sizeof("imjournal") - 1)); + CHKiRet(prop.CreateStringProp(&pLocalHostIP, UCHAR_CONSTANT("127.0.0.1"), sizeof("127.0.0.1") - 1)); + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalpersiststateinterval", 0, eCmdHdlrInt, + NULL, &cs.iPersistStateInterval, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalratelimitinterval", 0, eCmdHdlrInt, + NULL, &cs.ratelimitInterval, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalratelimitburst", 0, eCmdHdlrInt, + NULL, &cs.ratelimitBurst, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalstatefile", 0, eCmdHdlrGetWord, + NULL, &cs.stateFile, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalignorepreviousmessages", 0, eCmdHdlrBinary, + NULL, &cs.bIgnorePrevious, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournaldefaultseverity", 0, eCmdHdlrSeverity, + NULL, &cs.iDfltSeverity, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournaldefaultfacility", 0, eCmdHdlrCustomHandler, + facilityHdlr, &cs.iDfltFacility, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalusepidfromsystem", 0, eCmdHdlrBinary, + NULL, &cs.bUseJnlPID, STD_LOADABLE_MODULE_ID)); +ENDmodInit +/* vim:set ai: + */ diff --git a/plugins/imkafka/Makefile.am b/plugins/imkafka/Makefile.am new file mode 100644 index 0000000..c26a0be --- /dev/null +++ b/plugins/imkafka/Makefile.am @@ -0,0 +1,19 @@ +pkglib_LTLIBRARIES = imkafka.la + +if IMKAFKA_USE_DUMMY +imkafka_la_SOURCES = dummy.c +imkafka_la_LDFLAGS = -module -avoid-version +imkafka_la_CPPFLAGS = -I$(top_srcdir) $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) -D MODNAME=imkafka +else +imkafka_la_SOURCES = imkafka.c +if ENABLE_KAFKA_STATIC +imkafka_la_LDFLAGS = -module -avoid-version -Wl,--whole-archive -l:librdkafka-static.a -Wl,--no-whole-archive -ldl -lresolv -lcurl -lssl -lpthread -lcrypto -lsasl2 -lz -llz4 -lrt -lm +else +imkafka_la_LDFLAGS = -module -avoid-version $(LIBRDKAFKA_LIBS) -lm +endif +imkafka_la_CPPFLAGS = -I$(top_srcdir) $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +endif + +imkafka_la_LIBADD = +EXTRA_DIST = + diff --git a/plugins/imkafka/Makefile.in b/plugins/imkafka/Makefile.in new file mode 100644 index 0000000..ac871b3 --- /dev/null +++ b/plugins/imkafka/Makefile.in @@ -0,0 +1,815 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/imkafka/dummy.c b/plugins/imkafka/dummy.c new file mode 100644 index 0000000..fe8c249 --- /dev/null +++ b/plugins/imkafka/dummy.c @@ -0,0 +1,171 @@ +/* a dummy module to be loaded if we cannot build this module, but + * configure required it to be "optional". + * + * Copyright 2020 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include <pthread.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" + +#define MODULE_NAME(x) #x + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME(MODULE_NAME(MODNAME)) + + +DEF_OMOD_STATIC_DATA + +/* config variables */ +typedef struct _instanceData { + char *dummy; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +struct modConfData_s { +}; + +/* modConf ptr to use for the current load process */ +static modConfData_t *loadModConf = NULL; +/* modConf ptr to use for the current exec process */ +static modConfData_t *runModConf = NULL; + + + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINsetModCnf +CODESTARTsetModCnf + (void) lst; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME)); +ENDsetModCnf + + +BEGINnewActInst +CODESTARTnewActInst + (void) pData; + (void) ppModData; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME)); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +BEGINdoAction_NoStrings +CODESTARTdoAction + (void) pMsgData; +ENDdoAction + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + /* we only support the current interface specification */ + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + dbgprintf("dummy module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git a/plugins/imkafka/imkafka.c b/plugins/imkafka/imkafka.c new file mode 100644 index 0000000..6351280 --- /dev/null +++ b/plugins/imkafka/imkafka.c @@ -0,0 +1,904 @@ +/* imkafka.c + * + * This input plugin is a consumer for Apache Kafka. + * + * File begun on 2017-04-25 by alorbach + * + * Copyright 2008-2017 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <sys/uio.h> +#include <librdkafka/rdkafka.h> + +#include "rsyslog.h" +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "atomic.h" +#include "statsobj.h" +#include "unicode-helper.h" +#include "prop.h" +#include "ruleset.h" +#include "glbl.h" +#include "cfsysline.h" +#include "msg.h" +#include "dirty.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imkafka") + +/* static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(prop) +DEFobjCurrIf(ruleset) +DEFobjCurrIf(glbl) +DEFobjCurrIf(statsobj) + +/* forward references */ +static void * imkafkawrkr(void *myself); + + +struct kafka_params { + const char *name; + const char *val; +}; + +/* Module static data */ +static struct configSettings_s { + uchar *topic; + uchar *consumergroup; + char *brokers; + uchar *pszBindRuleset; + int nConfParams; + struct kafka_params *confParams; +} cs; + +struct instanceConf_s { + uchar *topic; + uchar *consumergroup; + char *brokers; + int64_t offset; + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + uchar *pszBindRuleset; /* default name of Ruleset to bind to */ + int bReportErrs; + int nConfParams; + struct kafka_params *confParams; + int bIsConnected; + rd_kafka_conf_t *conf; + rd_kafka_t *rk; + rd_kafka_topic_conf_t *topic_conf; + int partition; + int bIsSubscribed; + int nMsgParsingFlags; + + struct instanceConf_s *next; +}; + + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + uchar *topic; + uchar *consumergroup; + char *brokers; + instanceConf_t *root, *tail; + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + uchar *pszBindRuleset; /* default name of Ruleset to bind to */ +}; + +/* global data */ +pthread_attr_t wrkrThrdAttr; /* Attribute for worker threads ; read only after startup */ +static int activeKafkaworkers = 0; +/* The following structure controls the worker threads. Global data is + * needed for their access. + */ +static struct kafkaWrkrInfo_s { + pthread_t tid; /* the worker's thread ID */ + instanceConf_t *inst; /* Pointer to imkafka instance */ +} *kafkaWrkrInfo; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */ + +static prop_t *pInputName = NULL; +/* there is only one global inputName for all messages generated by this input */ + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "ruleset", eCmdHdlrGetWord, 0 }, +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "topic", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "broker", eCmdHdlrArray, 0 }, + { "confparam", eCmdHdlrArray, 0 }, + { "consumergroup", eCmdHdlrString, 0}, + { "ruleset", eCmdHdlrString, 0 }, + { "parsehostname", eCmdHdlrBinary, 0 }, +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; + +#include "im-helper.h" /* must be included AFTER the type definitions! */ + +/* ------------------------------ callbacks ------------------------------ */ + + + + +/* ------------------------------ end callbacks ------------------------------ */ + +static void +kafkaLogger(const rd_kafka_t __attribute__((unused)) *rk, int level, + const char *fac, const char *buf) +{ + DBGPRINTF("imkafka: kafka log message [%d,%s]: %s\n", + level, fac, buf); +} + + +/* enqueue the kafka message. The provided string is + * not freed - thuis must be done by the caller. + */ +static rsRetVal enqMsg(instanceConf_t *const __restrict__ inst, + rd_kafka_message_t *const __restrict__ rkmessage) +{ + DEFiRet; + smsg_t *pMsg; + + if((int)rkmessage->len == 0) { + /* we do not process empty lines */ + FINALIZE; + } + +DBGPRINTF("imkafka: enqMsg: Msg: %.*s\n", (int)rkmessage->len, (char *)rkmessage->payload); + + CHKiRet(msgConstruct(&pMsg)); + MsgSetInputName(pMsg, pInputName); + MsgSetRawMsg(pMsg, (char*)rkmessage->payload, (int)rkmessage->len); + MsgSetFlowControlType(pMsg, eFLOWCTL_LIGHT_DELAY); + MsgSetRuleset(pMsg, inst->pBindRuleset); + pMsg->msgFlags = inst->nMsgParsingFlags; + /* Optional Fields */ + if (rkmessage->key_len) { + DBGPRINTF("imkafka: enqMsg: Key: %.*s\n", (int)rkmessage->key_len, (char *)rkmessage->key); + MsgSetTAG(pMsg, (const uchar *)rkmessage->key, (int)rkmessage->key_len); + } + MsgSetMSGoffs(pMsg, 0); /* we do not have a header... */ + + CHKiRet(submitMsg2(pMsg)); + +finalize_it: + RETiRet; +} + +/** + * Handle Kafka Consumer Loop until all msgs are processed + */ +static void msgConsume (instanceConf_t *inst) { + rd_kafka_message_t *rkmessage = NULL; + + do { /* Consume messages */ + rkmessage = rd_kafka_consumer_poll(inst->rk, 1000); /* Block for 1000 ms max */ + if(rkmessage == NULL) { + DBGPRINTF("imkafka: msgConsume EMPTY Loop on %s/%s/%s\n", + inst->topic, inst->consumergroup, inst->brokers); + goto done; + } + + if (rkmessage->err) { + if (rkmessage->err == RD_KAFKA_RESP_ERR__PARTITION_EOF) { + /* not an error, just a regular status! */ + DBGPRINTF("imkafka: Consumer " + "reached end of topic \"%s\" [%"PRId32"]" + "message queue offset %"PRId64"\n", + rd_kafka_topic_name(rkmessage->rkt), + rkmessage->partition, + rkmessage->offset); + goto done; + } + if (rkmessage->rkt) { + LogError(0, RS_RET_KAFKA_ERROR, + "imkafka: Consumer error for topic \"%s\" [%"PRId32"]" + "message queue offset %"PRId64": %s\n", + rd_kafka_topic_name(rkmessage->rkt), + rkmessage->partition, + rkmessage->offset, + rd_kafka_message_errstr(rkmessage)); + } else { + LogError(0, RS_RET_KAFKA_ERROR, + "imkafka: Consumer error for topic \"%s\": \"%s\"\n", + rd_kafka_err2str(rkmessage->err), + rd_kafka_message_errstr(rkmessage)); + } + goto done; + } + + DBGPRINTF("imkafka: msgConsume Loop on %s/%s/%s: [%"PRId32"], " + "offset %"PRId64", %zd bytes):\n", + rd_kafka_topic_name(rkmessage->rkt) /*inst->topic*/, + inst->consumergroup, + inst->brokers, + rkmessage->partition, + rkmessage->offset, + rkmessage->len); + enqMsg(inst, rkmessage); + /* Destroy message and continue */ + rd_kafka_message_destroy(rkmessage); + rkmessage = NULL; + } while(1); /* loop broken inside */ +done: + /* Destroy message in case rkmessage->err was set */ + if(rkmessage != NULL) { + rd_kafka_message_destroy(rkmessage); + } + return; +} + + + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->next = NULL; + + inst->brokers = NULL; + inst->topic = NULL; + inst->consumergroup = NULL; + inst->pszBindRuleset = NULL; + inst->nConfParams = 0; + inst->confParams = NULL; + inst->pBindRuleset = NULL; + inst->bReportErrs = 1; /* Fixed for now */ + inst->nMsgParsingFlags = NEEDS_PARSING; + inst->bIsConnected = 0; + inst->bIsSubscribed = 0; + /* Kafka objects */ + inst->conf = NULL; + inst->rk = NULL; + inst->topic_conf = NULL; + inst->partition = RD_KAFKA_PARTITION_UA; + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = inst; + } else { + loadModConf->tail->next = inst; + loadModConf->tail = inst; + } + + *pinst = inst; +finalize_it: + RETiRet; +} + +/* this function checks instance parameters and does some required pre-processing + */ +static rsRetVal ATTR_NONNULL() +checkInstance(instanceConf_t *const inst) +{ + DEFiRet; + char kafkaErrMsg[1024]; + + /* main kafka conf */ + inst->conf = rd_kafka_conf_new(); + if(inst->conf == NULL) { + if(inst->bReportErrs) { + LogError(0, RS_RET_KAFKA_ERROR, + "imkafka: error creating kafka conf obj: %s\n", + rd_kafka_err2str(rd_kafka_last_error())); + } + ABORT_FINALIZE(RS_RET_KAFKA_ERROR); + } + +# ifdef DEBUG + /* enable kafka debug output */ + if(rd_kafka_conf_set(inst->conf, "debug", RD_KAFKA_DEBUG_CONTEXTS, + kafkaErrMsg, sizeof(kafkaErrMsg)) != RD_KAFKA_CONF_OK) { + LogError(0, RS_RET_KAFKA_ERROR, "imkafka: error setting kafka debug option: %s\n", kafkaErrMsg); + /* DO NOT ABORT IN THIS CASE! */ + } +# endif + + /* Set custom configuration parameters */ + for(int i = 0 ; i < inst->nConfParams ; ++i) { + assert(inst->confParams+i != NULL); /* invariant: nConfParams MUST exist! */ + DBGPRINTF("imkafka: setting custom configuration parameter: %s:%s\n", + inst->confParams[i].name, + inst->confParams[i].val); + if(rd_kafka_conf_set(inst->conf, + inst->confParams[i].name, + inst->confParams[i].val, + kafkaErrMsg, sizeof(kafkaErrMsg)) != RD_KAFKA_CONF_OK) { + if(inst->bReportErrs) { + LogError(0, RS_RET_PARAM_ERROR, "error setting custom configuration " + "parameter '%s=%s': %s", + inst->confParams[i].name, + inst->confParams[i].val, kafkaErrMsg); + } else { + DBGPRINTF("imkafka: error setting custom configuration parameter '%s=%s': %s", + inst->confParams[i].name, + inst->confParams[i].val, kafkaErrMsg); + } + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + } + + /* Topic configuration */ + inst->topic_conf = rd_kafka_topic_conf_new(); + + /* Assign kafka group id */ + if (inst->consumergroup != NULL) { + DBGPRINTF("imkafka: setting consumergroup: '%s'\n", inst->consumergroup); + if (rd_kafka_conf_set(inst->conf, "group.id", (char*) inst->consumergroup, + kafkaErrMsg, sizeof(kafkaErrMsg)) != RD_KAFKA_CONF_OK) { + if(inst->bReportErrs) { + LogError(0, RS_RET_KAFKA_ERROR, + "imkafka: error assigning consumergroup %s to " + "kafka config: %s\n", inst->consumergroup, + kafkaErrMsg); + } + ABORT_FINALIZE(RS_RET_KAFKA_ERROR); + } + + + /* Set default for auto offset reset */ + if (rd_kafka_topic_conf_set(inst->topic_conf, "auto.offset.reset", + "smallest", kafkaErrMsg, sizeof(kafkaErrMsg)) != RD_KAFKA_CONF_OK) { + if(inst->bReportErrs) { + LogError(0, RS_RET_KAFKA_ERROR, + "imkafka: error setting kafka auto.offset.reset on %s: %s\n", + inst->consumergroup, + kafkaErrMsg); + } + ABORT_FINALIZE(RS_RET_KAFKA_ERROR); + } + /* Consumer groups always use broker based offset storage */ + if (rd_kafka_topic_conf_set(inst->topic_conf, "offset.store.method", + "broker", kafkaErrMsg, sizeof(kafkaErrMsg)) != RD_KAFKA_CONF_OK) { + if(inst->bReportErrs) { + LogError(0, RS_RET_KAFKA_ERROR, + "imkafka: error setting kafka offset.store.method on %s: %s\n", + inst->consumergroup, + kafkaErrMsg); + } + ABORT_FINALIZE(RS_RET_KAFKA_ERROR); + } + + /* Set default topic config for pattern-matched topics. */ + rd_kafka_conf_set_default_topic_conf(inst->conf, inst->topic_conf); + } + + #if RD_KAFKA_VERSION >= 0x00090001 + rd_kafka_conf_set_log_cb(inst->conf, kafkaLogger); + #endif + + /* Create Kafka Consumer */ + inst->rk = rd_kafka_new(RD_KAFKA_CONSUMER, inst->conf, + kafkaErrMsg, sizeof(kafkaErrMsg)); + if(inst->rk == NULL) { + if(inst->bReportErrs) { + LogError(0, RS_RET_KAFKA_ERROR, + "imkafka: error creating kafka handle: %s\n", kafkaErrMsg); + } + ABORT_FINALIZE(RS_RET_KAFKA_ERROR); + } + #if RD_KAFKA_VERSION < 0x00090001 + rd_kafka_set_logger(inst->rk, kafkaLogger); + #endif + + DBGPRINTF("imkafka: setting brokers: '%s'\n", inst->brokers); + if(rd_kafka_brokers_add(inst->rk, (char*)inst->brokers) == 0) { + if(inst->bReportErrs) { + LogError(0, RS_RET_KAFKA_NO_VALID_BROKERS, + "imkafka: no valid brokers specified: %s", inst->brokers); + } + ABORT_FINALIZE(RS_RET_KAFKA_NO_VALID_BROKERS); + } + + /* Kafka Consumer is opened */ + inst->bIsConnected = 1; + +finalize_it: + if(iRet != RS_RET_OK) { + if(inst->rk == NULL) { + if(inst->conf != NULL) { + rd_kafka_conf_destroy(inst->conf); + inst->conf = NULL; + } + } else { /* inst->rk != NULL ! */ + rd_kafka_destroy(inst->rk); + inst->rk = NULL; + } + } + + RETiRet; +} + +/* function to generate an error message if the ruleset cannot be found */ +static inline void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + if(inst->bReportErrs) { + LogError(0, NO_ERRCODE, "imkafka: ruleset '%s' not found - " + "using default ruleset instead", + inst->pszBindRuleset); + } +} + + +static rsRetVal ATTR_NONNULL(2) +addConsumer(modConfData_t __attribute__((unused)) *modConf, instanceConf_t *inst) +{ + DEFiRet; + rd_kafka_resp_err_t err; + + assert(inst != NULL); + + rd_kafka_topic_partition_list_t *topics = NULL; + DBGPRINTF("imkafka: creating kafka consumer on %s/%s/%s\n", + inst->topic, inst->consumergroup, inst->brokers); + + /* Redirect rd_kafka_poll() to consumer_poll() */ + rd_kafka_poll_set_consumer(inst->rk); + + topics = rd_kafka_topic_partition_list_new(1); + rd_kafka_topic_partition_list_add(topics, (const char*)inst->topic, inst->partition); + DBGPRINTF("imkafka: Created topics(%d) for %s)\n", + topics->cnt, inst->topic); + if ((err = rd_kafka_subscribe(inst->rk, topics))) { + /* Subscription failed */ + inst->bIsSubscribed = 0; + LogError(0, RS_RET_KAFKA_ERROR, "imkafka: Failed to start consuming " + "topics: %s\n", rd_kafka_err2str(err)); + ABORT_FINALIZE(RS_RET_KAFKA_ERROR); + } else { + DBGPRINTF("imkafka: Successfully subscribed to %s/%s/%s\n", + inst->topic, inst->consumergroup, inst->brokers); + /* Subscription is working */ + inst->bIsSubscribed = 1; + } +finalize_it: + if(topics != NULL) + rd_kafka_topic_partition_list_destroy(topics); + RETiRet; +} + +static rsRetVal ATTR_NONNULL() +processKafkaParam(char *const param, + const char **const name, + const char **const paramval) +{ + DEFiRet; + char *val = strstr(param, "="); + if(val == NULL) { + LogError(0, RS_RET_PARAM_ERROR, "missing equal sign in " + "parameter '%s'", param); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + *val = '\0'; /* terminates name */ + ++val; /* now points to begin of value */ + CHKmalloc(*name = strdup(param)); + CHKmalloc(*paramval = strdup(val)); +finalize_it: + RETiRet; +} + +BEGINnewInpInst + struct cnfparamvals *pvals; + instanceConf_t *inst; + int i; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imkafka)\n"); + + if((pvals = nvlstGetParams(lst, &inppblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("input param blk in imkafka:\n"); + cnfparamsPrint(&inppblk, pvals); + } + + CHKiRet(createInstance(&inst)); + + for(i = 0 ; i < inppblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(inppblk.descr[i].name, "broker")) { + es_str_t *es = es_newStr(128); + int bNeedComma = 0; + for(int j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + if(bNeedComma) + es_addChar(&es, ','); + es_addStr(&es, pvals[i].val.d.ar->arr[j]); + bNeedComma = 1; + } + inst->brokers = es_str2cstr(es, NULL); + es_deleteStr(es); + } else if(!strcmp(inppblk.descr[i].name, "confparam")) { + inst->nConfParams = pvals[i].val.d.ar->nmemb; + CHKmalloc(inst->confParams = malloc(sizeof(struct kafka_params)*inst->nConfParams)); + for(int j = 0; j < inst->nConfParams; j++) { + char *cstr = es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + CHKiRet(processKafkaParam(cstr, &inst->confParams[j].name, + &inst->confParams[j].val)); + free(cstr); + } + } else if(!strcmp(inppblk.descr[i].name, "topic")) { + inst->topic = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "consumergroup")) { + inst->consumergroup = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "parsehostname")) { + if (pvals[i].val.d.n) { + inst->nMsgParsingFlags = NEEDS_PARSING | PARSE_HOSTNAME; + } else { + inst->nMsgParsingFlags = NEEDS_PARSING; + } + } else { + dbgprintf("imkafka: program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + } + + if(inst->brokers == NULL) { + CHKmalloc(inst->brokers = strdup("localhost:9092")); + LogMsg(0, NO_ERRCODE, LOG_INFO, "imkafka: \"broker\" parameter not specified " + "using default of localhost:9092 -- this may not be what you want!"); + } + + DBGPRINTF("imkafka: newInpIns brokers=%s, topic=%s, consumergroup=%s\n", + inst->brokers, inst->topic, inst->consumergroup); + +finalize_it: +CODE_STD_FINALIZERnewInpInst + cnfparamvalsDestruct(pvals, &inppblk); +ENDnewInpInst + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->pszBindRuleset = NULL; +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "imkafka: error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for imkafka:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "ruleset")) { + loadModConf->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("imkafka: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(loadModConf->pszBindRuleset == NULL) { + if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) { + loadModConf->pszBindRuleset = NULL; + } else { + CHKmalloc(loadModConf->pszBindRuleset = ustrdup(cs.pszBindRuleset)); + } + } +finalize_it: + free(cs.pszBindRuleset); + cs.pszBindRuleset = NULL; + loadModConf = NULL; /* done loading */ +ENDendCnfLoad + +BEGINcheckCnf + instanceConf_t *inst; +CODESTARTcheckCnf + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + if(inst->pszBindRuleset == NULL && pModConf->pszBindRuleset != NULL) { + CHKmalloc(inst->pszBindRuleset = ustrdup(pModConf->pszBindRuleset)); + } + std_checkRuleset(pModConf, inst); + } +finalize_it: +ENDcheckCnf + + +BEGINactivateCnfPrePrivDrop +CODESTARTactivateCnfPrePrivDrop + runModConf = pModConf; +ENDactivateCnfPrePrivDrop + +BEGINactivateCnf +CODESTARTactivateCnf + for(instanceConf_t *inst = pModConf->root ; inst != NULL ; inst = inst->next) { + iRet = checkInstance(inst); + } +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; +CODESTARTfreeCnf + for(inst = pModConf->root ; inst != NULL ; ) { + free(inst->topic); + free(inst->consumergroup); + free(inst->brokers); + free(inst->pszBindRuleset); + for(int i = 0; i < inst->nConfParams; i++) { + free((void*)inst->confParams[i].name); + free((void*)inst->confParams[i].val); + } + free((void*)inst->confParams); + del = inst; + inst = inst->next; + free(del); + } + free(pModConf->pszBindRuleset); +ENDfreeCnf + + +/* Cleanup imkafka worker threads */ +static void +shutdownKafkaWorkers(void) +{ + int i; + instanceConf_t *inst; + + assert(kafkaWrkrInfo != NULL); + + DBGPRINTF("imkafka: waiting on imkafka workerthread termination\n"); + for(i = 0 ; i < activeKafkaworkers ; ++i) { + pthread_join(kafkaWrkrInfo[i].tid, NULL); + DBGPRINTF("imkafka: Stopped worker %d\n", i); + } + free(kafkaWrkrInfo); + kafkaWrkrInfo = NULL; + + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + DBGPRINTF("imkafka: stop consuming %s/%s/%s\n", + inst->topic, inst->consumergroup, inst->brokers); + rd_kafka_consumer_close(inst->rk); /* Close the consumer, committing final offsets, etc. */ + rd_kafka_destroy(inst->rk); /* Destroy handle object */ + DBGPRINTF("imkafka: stopped consuming %s/%s/%s\n", + inst->topic, inst->consumergroup, inst->brokers); + + #if RD_KAFKA_VERSION < 0x00090001 + /* Wait for kafka being destroyed in old API */ + if (rd_kafka_wait_destroyed(10000) < 0) { + DBGPRINTF("imkafka: error, rd_kafka_destroy did not finish after grace " + "timeout (10s)!\n"); + } else { + DBGPRINTF("imkafka: rd_kafka_destroy successfully finished\n"); + } + #endif + } +} + + +/* This function is called to gather input. */ +BEGINrunInput + int i; + instanceConf_t *inst; +CODESTARTrunInput + DBGPRINTF("imkafka: runInput loop started ...\n"); + activeKafkaworkers = 0; + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + if(inst->rk != NULL) { + ++activeKafkaworkers; + } + } + + if(activeKafkaworkers == 0) { + LogError(0, RS_RET_ERR, "imkafka: no active inputs, input does " + "not run - there should have been additional error " + "messages given previously"); + ABORT_FINALIZE(RS_RET_ERR); + } + + + DBGPRINTF("imkafka: Starting %d imkafka workerthreads\n", activeKafkaworkers); + kafkaWrkrInfo = calloc(activeKafkaworkers, sizeof(struct kafkaWrkrInfo_s)); + if (kafkaWrkrInfo == NULL) { + LogError(errno, RS_RET_OUT_OF_MEMORY, "imkafka: worker-info array allocation failed."); + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + + /* Start worker threads for each imkafka input source + */ + i = 0; + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + /* init worker info structure! */ + kafkaWrkrInfo[i].inst = inst; /* Set reference pointer */ + pthread_create(&kafkaWrkrInfo[i].tid, &wrkrThrdAttr, imkafkawrkr, &(kafkaWrkrInfo[i])); + i++; + } + + while(glbl.GetGlobalInputTermState() == 0) { + + /* Note: the additional 10000ns wait is vitally important. It guards rsyslog + * against totally hogging the CPU if the users selects a polling interval + * of 0 seconds. It doesn't hurt any other valid scenario. So do not remove. + */ + if(glbl.GetGlobalInputTermState() == 0) + srSleep(0, 100000); + } + DBGPRINTF("imkafka: terminating upon request of rsyslog core\n"); + + /* we need to shutdown kafak worker threads here because this operation can + * potentially block (e.g. when no kafka broker is available!). If this + * happens in runInput, the rsyslog core can cancel our thread. However, + * in afterRun this is not possible, because the core does not assume it + * can block there. -- rgerhards, 2018-10-23 + */ + shutdownKafkaWorkers(); +finalize_it: +ENDrunInput + + +BEGINwillRun +CODESTARTwillRun + /* we need to create the inputName property (only once during our lifetime) */ + CHKiRet(prop.Construct(&pInputName)); + CHKiRet(prop.SetString(pInputName, UCHAR_CONSTANT("imkafka"), sizeof("imkafka") - 1)); + CHKiRet(prop.ConstructFinalize(pInputName)); +finalize_it: +ENDwillRun + + +BEGINafterRun +CODESTARTafterRun + if(pInputName != NULL) + prop.Destruct(&pInputName); + +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + pthread_attr_destroy(&wrkrThrdAttr); + /* release objects we used */ + objRelease(statsobj, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); + objRelease(glbl, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); +ENDmodExit + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + /* request objects we use */ + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + + /* initialize "read-only" thread attributes */ + pthread_attr_init(&wrkrThrdAttr); + pthread_attr_setstacksize(&wrkrThrdAttr, 4096*1024); + + DBGPRINTF("imkafka %s using librdkafka version %s, 0x%x\n", + VERSION, rd_kafka_version_str(), rd_kafka_version()); +ENDmodInit + +/* +* Workerthread function for a single kafka consomer + */ +static void * +imkafkawrkr(void *myself) +{ + struct kafkaWrkrInfo_s *me = (struct kafkaWrkrInfo_s*) myself; + DBGPRINTF("imkafka: started kafka consumer workerthread on %s/%s/%s\n", + me->inst->topic, me->inst->consumergroup, me->inst->brokers); + + do { + if(glbl.GetGlobalInputTermState() == 1) + break; /* terminate input! */ + + if(me->inst->rk == NULL) { + continue; + } + + // Try to add consumer only if connected! */ + if(me->inst->bIsConnected == 1 && me->inst->bIsSubscribed == 0 ) { + addConsumer(runModConf, me->inst); + } + if(me->inst->bIsSubscribed == 1 ) { + msgConsume(me->inst); + } + /* Note: the additional 10000ns wait is vitally important. It guards rsyslog + * against totally hogging the CPU if the users selects a polling interval + * of 0 seconds. It doesn't hurt any other valid scenario. So do not remove. + * rgerhards, 2008-02-14 + */ + if(glbl.GetGlobalInputTermState() == 0) + srSleep(0, 100000); + } while(glbl.GetGlobalInputTermState() == 0); + + DBGPRINTF("imkafka: stopped kafka consumer workerthread on %s/%s/%s\n", + me->inst->topic, me->inst->consumergroup, me->inst->brokers); + return NULL; +} diff --git a/plugins/imklog/Makefile.am b/plugins/imklog/Makefile.am new file mode 100644 index 0000000..3626eec --- /dev/null +++ b/plugins/imklog/Makefile.am @@ -0,0 +1,20 @@ +pkglib_LTLIBRARIES = imklog.la +imklog_la_SOURCES = imklog.c imklog.h + +# select klog "driver" +if ENABLE_IMKLOG_BSD +imklog_la_SOURCES += bsd.c +endif + +if ENABLE_IMKLOG_LINUX +imklog_la_SOURCES += bsd.c +endif + +imklog_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +imklog_la_LDFLAGS = -module -avoid-version +imklog_la_LIBADD = + +if ENABLE_LIBLOGGING_STDLOG +imklog_la_CPPFLAGS += $(LIBLOGGING_STDLOG_CFLAGS) +imklog_la_LDFLAGS += $(LIBLOGGING_STDLOG_LIBS) +endif diff --git a/plugins/imklog/Makefile.in b/plugins/imklog/Makefile.in new file mode 100644 index 0000000..54bd041 --- /dev/null +++ b/plugins/imklog/Makefile.in @@ -0,0 +1,818 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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install; \ + fi +mostlyclean-generic: + +clean-generic: + +distclean-generic: + -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES) + -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES) + +maintainer-clean-generic: + @echo "This command is intended for maintainers to use" + @echo "it deletes files that may require special tools to rebuild." +clean: clean-am + +clean-am: clean-generic clean-libtool clean-pkglibLTLIBRARIES \ + mostlyclean-am + +distclean: distclean-am + -rm -f ./$(DEPDIR)/imklog_la-bsd.Plo + -rm -f ./$(DEPDIR)/imklog_la-imklog.Plo + -rm -f Makefile +distclean-am: clean-am distclean-compile distclean-generic \ + distclean-tags + +dvi: dvi-am + +dvi-am: + +html: html-am + +html-am: + +info: info-am + +info-am: + +install-data-am: + +install-dvi: install-dvi-am + +install-dvi-am: + +install-exec-am: install-pkglibLTLIBRARIES + +install-html: install-html-am + +install-html-am: + +install-info: install-info-am + +install-info-am: + +install-man: + +install-pdf: install-pdf-am + +install-pdf-am: + +install-ps: install-ps-am + +install-ps-am: + +installcheck-am: + +maintainer-clean: maintainer-clean-am + -rm -f ./$(DEPDIR)/imklog_la-bsd.Plo + -rm -f ./$(DEPDIR)/imklog_la-imklog.Plo + -rm -f Makefile +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-pkglibLTLIBRARIES + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \ + clean-generic clean-libtool clean-pkglibLTLIBRARIES \ + cscopelist-am ctags ctags-am distclean distclean-compile \ + distclean-generic distclean-libtool distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/imklog/bsd.c b/plugins/imklog/bsd.c new file mode 100644 index 0000000..85331f2 --- /dev/null +++ b/plugins/imklog/bsd.c @@ -0,0 +1,329 @@ +/* combined imklog driver for BSD and Linux + * + * This contains OS-specific functionality to read the BSD + * or Linux kernel log. For a general overview, see head comment in + * imklog.c. This started out as the BSD-specific drivers, but it + * turned out that on modern Linux the implementation details + * are very small, and so we use a single driver for both OS's with + * a little help of conditional compilation. + * + * Copyright 2008-2023 Adiscon GmbH + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <string.h> +#include <ctype.h> +#ifdef OS_LINUX +# include <sys/klog.h> +#endif + +#include "rsyslog.h" +#include "srUtils.h" +#include "debug.h" +#include "imklog.h" + +/* globals */ +static int fklog = -1; /* kernel log fd */ + +#ifndef _PATH_KLOG +# ifdef OS_LINUX +# define _PATH_KLOG "/proc/kmsg" +# else +# define _PATH_KLOG "/dev/klog" +# endif +#endif + + +#ifdef OS_LINUX +/* submit a message to imklog Syslog() API. In this function, we check if + * a kernel timestamp is present and, if so, extract and strip it. + * Note that this is heavily Linux specific and thus is not compiled or + * used for BSD. + * Special thanks to Lennart Poettering for suggesting on how to convert + * the kernel timestamp to a realtime timestamp. This method depends on + * the fact the the kernel timestamp is written using the monotonic clock. + * Shall that change (very unlikely), this code must be changed as well. Note + * that due to the way we generate the delta, we are unable to write the + * absolutely correct timestamp (system call overhead of the clock calls + * prevents us from doing so). However, the difference is very minor. + * rgerhards, 2011-06-24 + */ +static void +submitSyslog(modConfData_t *pModConf, syslog_pri_t pri, uchar *buf) +{ + long secs; + long usecs; + long secOffs; + long usecOffs; + unsigned i; + unsigned bufsize; + struct timespec monotonic, realtime; + struct timeval tv; + struct timeval *tp = NULL; + + /* find end of pri */ + int endpri = 1; + while(buf[endpri] != '>' && endpri < 5) + ++endpri; + if(endpri > 4 || buf[endpri + 1] != '[') + goto done; + DBGPRINTF("imklog: kernel timestamp detected, extracting it\n"); + + /* we now try to parse the timestamp. iff it parses, we assume + * it is a timestamp. Otherwise we know for sure it is no ts ;) + */ + i = endpri + 2; /* space or first digit after '[' */ + while(buf[i] && isspace(buf[i])) + ++i; /* skip space */ + secs = 0; + while(buf[i] && isdigit(buf[i])) { + secs = secs * 10 + buf[i] - '0'; + ++i; + } + if(buf[i] != '.') { + DBGPRINTF("no dot --> no kernel timestamp\n"); + goto done; /* no TS! */ + } + + ++i; /* skip dot */ + usecs = 0; + while(buf[i] && isdigit(buf[i])) { + usecs = usecs * 10 + buf[i] - '0'; + ++i; + } + if(buf[i] != ']') { + DBGPRINTF("no trailing ']' --> no kernel timestamp\n"); + goto done; /* no TS! */ + } + ++i; /* skip ']' */ + + /* we have a timestamp */ + DBGPRINTF("kernel timestamp is %ld %ld\n", secs, usecs); + if(!pModConf->bKeepKernelStamp) { + bufsize= strlen((char*)buf); + memmove(buf+endpri+1, buf+i, bufsize - i + 1); + } + + if(!pModConf->bParseKernelStamp) { + DBGPRINTF("imklog/bsd: parseKernelStamp not set, ignoring kernel timestamp\n"); + goto done; + } + + clock_gettime(CLOCK_MONOTONIC, &monotonic); + clock_gettime(CLOCK_REALTIME, &realtime); + secOffs = realtime.tv_sec - monotonic.tv_sec; + usecOffs = (realtime.tv_nsec - monotonic.tv_nsec) / 1000; + if(usecOffs < 0) { + secOffs--; + usecOffs += 1000000l; + } + + usecs += usecOffs; + if(usecs > 999999l) { + secs++; + usecs -= 1000000l; + } + secs += secOffs; + tv.tv_sec = secs; + tv.tv_usec = usecs; + tp = &tv; + +done: + Syslog(pModConf, pri, buf, tp); +} +#else /* now comes the BSD "code" (just a shim) */ +static void +submitSyslog(modConfData_t *pModConf, syslog_pri_t pri, uchar *buf) +{ + Syslog(pModConf, pri, buf, NULL); +} +#endif /* #ifdef LINUX */ + + +static uchar *GetPath(modConfData_t *pModConf) +{ + return pModConf->pszPath ? pModConf->pszPath : (uchar*) _PATH_KLOG; +} + +/* open the kernel log - will be called inside the willRun() imklog + * entry point. -- rgerhards, 2008-04-09 + */ +rsRetVal +klogWillRunPrePrivDrop(modConfData_t *pModConf) +{ + char errmsg[2048]; + DEFiRet; + + fklog = open((char*)GetPath(pModConf), O_RDONLY, 0); + if (fklog < 0) { + imklogLogIntMsg(LOG_ERR, "imklog: cannot open kernel log (%s): %s.", + GetPath(pModConf), rs_strerror_r(errno, errmsg, sizeof(errmsg))); + ABORT_FINALIZE(RS_RET_ERR_OPEN_KLOG); + } + +# ifdef OS_LINUX + /* Set level of kernel console messaging.. */ + if(pModConf->console_log_level != -1) { + int r = klogctl(8, NULL, pModConf->console_log_level); + if(r != 0) { + imklogLogIntMsg(LOG_WARNING, "imklog: cannot set console log level: %s", + rs_strerror_r(errno, errmsg, sizeof(errmsg))); + /* make sure we do not try to re-set! */ + pModConf->console_log_level = -1; + } + } +# endif /* #ifdef OS_LINUX */ + +finalize_it: + RETiRet; +} + +/* make sure the kernel log is readable after dropping privileges + */ +rsRetVal +klogWillRunPostPrivDrop(modConfData_t *pModConf) +{ + char errmsg[2048]; + int r; + DEFiRet; + + /* this normally returns EINVAL */ + /* on an OpenVZ VM, we get EPERM */ + r = read(fklog, NULL, 0); + if (r < 0 && errno != EINVAL) { + imklogLogIntMsg(LOG_ERR, "imklog: cannot open kernel log (%s): %s.", + GetPath(pModConf), rs_strerror_r(errno, errmsg, sizeof(errmsg))); + fklog = -1; + ABORT_FINALIZE(RS_RET_ERR_OPEN_KLOG); + } + +finalize_it: + RETiRet; +} + + +/* Read kernel log while data are available, split into lines. + */ +static void +readklog(modConfData_t *pModConf) +{ + char *p, *q; + int len, i; + int iMaxLine; + uchar bufRcv[128*1024+1]; + char errmsg[2048]; + uchar *pRcv = NULL; /* receive buffer */ + + iMaxLine = klog_getMaxLine(); + + /* we optimize performance: if iMaxLine is below our fixed size buffer (which + * usually is sufficiently large), we use this buffer. if it is higher, heap memory + * is used. We could use alloca() to achive a similar aspect, but there are so + * many issues with alloca() that I do not want to take that route. + * rgerhards, 2008-09-02 + */ + if((size_t) iMaxLine < sizeof(bufRcv) - 1) { + pRcv = bufRcv; + } else { + if((pRcv = (uchar*) malloc(iMaxLine + 1)) == NULL) { + iMaxLine = sizeof(bufRcv) - 1; /* better this than noting */ + pRcv = bufRcv; + } + } + + len = 0; + for (;;) { + dbgprintf("imklog(BSD/Linux) waiting for kernel log line\n"); + i = read(fklog, pRcv + len, iMaxLine - len); + if (i > 0) { + pRcv[i + len] = '\0'; + } else { + if (i < 0 && errno != EINTR && errno != EAGAIN) { + imklogLogIntMsg(LOG_ERR, + "imklog: error reading kernel log - shutting down: %s", + rs_strerror_r(errno, errmsg, sizeof(errmsg))); + fklog = -1; + } + break; + } + + for (p = (char*)pRcv; (q = strchr(p, '\n')) != NULL; p = q + 1) { + *q = '\0'; + submitSyslog(pModConf, LOG_INFO, (uchar*) p); + } + len = strlen(p); + if (len >= iMaxLine - 1) { + submitSyslog(pModConf, LOG_INFO, (uchar*)p); + len = 0; + } + if(len > 0) + memmove(pRcv, p, len + 1); + } + if (len > 0) + submitSyslog(pModConf, LOG_INFO, pRcv); + + if(pRcv != bufRcv) + free(pRcv); +} + + +/* to be called in the module's AfterRun entry point + * rgerhards, 2008-04-09 + */ +rsRetVal ATTR_NONNULL() +klogAfterRun(modConfData_t *const pModConf __attribute__((unused))) +{ + DEFiRet; + if(fklog != -1) + close(fklog); +# ifdef OS_LINUX + /* Turn on logging of messages to console, but only if a log level was speficied */ + if(pModConf->console_log_level != -1) + klogctl(7, NULL, 0); +# endif + RETiRet; +} + + + +/* to be called in the module's WillRun entry point, this is the main + * "message pull" mechanism. + * rgerhards, 2008-04-09 + */ +rsRetVal klogLogKMsg(modConfData_t *pModConf) +{ + DEFiRet; + readklog(pModConf); + RETiRet; +} + + +/* provide the (system-specific) default facility for internal messages + * rgerhards, 2008-04-14 + */ +int +klogFacilIntMsg(void) +{ + return LOG_SYSLOG; +} diff --git a/plugins/imklog/imklog.c b/plugins/imklog/imklog.c new file mode 100644 index 0000000..3935026 --- /dev/null +++ b/plugins/imklog/imklog.c @@ -0,0 +1,549 @@ +/* The kernel log module. + * + * This is an abstracted module. As Linux and BSD kernel log is conceptually the + * same, we do not do different input plugins for them but use + * imklog in both cases, just with different "backend drivers" for + * the different platforms. This also enables a rsyslog.conf to + * be used on multiple platforms without the need to take care of + * what the kernel log is coming from. + * + * See platform-specific files (e.g. linux.c, bsd.c) in the plugin's + * working directory. For other systems with similar kernel logging + * functionality, no new input plugin shall be written but rather a + * driver be developed for imklog. Please note that imklog itself is + * mostly concerned with handling the interface. Any real action happens + * in the drivers, as things may be pretty different on different + * platforms. + * + * Please note that this file replaces the klogd daemon that was + * also present in pre-v3 versions of rsyslog. + * + * To test under Linux: + * echo test1 > /dev/kmsg + * + * Copyright (C) 2008-2020 Adiscon GmbH + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <assert.h> +#include <string.h> +#include <stdarg.h> +#include <ctype.h> +#include <stdlib.h> +#include <sys/socket.h> + +#include "dirty.h" +#include "cfsysline.h" +#include "parserif.h" +#include "obj.h" +#include "msg.h" +#include "module-template.h" +#include "datetime.h" +#include "imklog.h" +#include "net.h" +#include "glbl.h" +#include "prop.h" +#include "errmsg.h" +#include "unicode-helper.h" +#include "ruleset.h" + + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imklog") + +/* Module static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(datetime) +DEFobjCurrIf(ruleset) +DEFobjCurrIf(glbl) +DEFobjCurrIf(prop) +DEFobjCurrIf(net) + +/* config settings */ +typedef struct configSettings_s { + int bPermitNonKernel; /* permit logging of messages not having LOG_KERN facility */ + int bParseKernelStamp; /* if try to parse kernel timestamps for message time */ + int bKeepKernelStamp; /* keep the kernel timestamp in the message */ + int iFacilIntMsg; /* the facility to use for internal messages (set by driver) */ + uchar *pszPath; + int console_log_level; /* still used for BSD */ + unsigned int ratelimitInterval; + unsigned int ratelimitBurst; +} configSettings_t; +static configSettings_t cs; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */ +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "ruleset", eCmdHdlrString, 0 }, + { "logpath", eCmdHdlrGetWord, 0 }, + { "permitnonkernelfacility", eCmdHdlrBinary, 0 }, + { "consoleloglevel", eCmdHdlrInt, 0 }, + { "parsekerneltimestamp", eCmdHdlrBinary, 0 }, + { "keepkerneltimestamp", eCmdHdlrBinary, 0 }, + { "internalmsgfacility", eCmdHdlrFacility, 0 }, + { "ratelimitinterval", eCmdHdlrInt, 0 }, + { "ratelimitburst", eCmdHdlrInt, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +static prop_t *pInputName = NULL; +/* there is only one global inputName for all messages generated by this module */ +static prop_t *pLocalHostIP = NULL; + +/** POTENTIAL COMMON CODE FOR RULESET CHECK **/ +static inline void std_mod_checkRuleset_genErrMsg(const modConfData_t *const modConf); +static inline rsRetVal +std_mod_checkRuleset(modConfData_t *const modConf) +{ + ruleset_t *pRuleset; + rsRetVal localRet; + DEFiRet; + + modConf->pBindRuleset = NULL; /* assume default ruleset */ + + if(modConf->pszBindRuleset == NULL) + FINALIZE; + + localRet = ruleset.GetRuleset(modConf->pConf, &pRuleset, modConf->pszBindRuleset); + if(localRet == RS_RET_NOT_FOUND) { + std_mod_checkRuleset_genErrMsg(modConf); + } + CHKiRet(localRet); + modConf->pBindRuleset = pRuleset; + +finalize_it: + RETiRet; +} +/** END POTENTIAL COMMON CODE FOR RULESET CHECK **/ +static inline void +std_mod_checkRuleset_genErrMsg(const modConfData_t *const modConf) +{ + LogError(0, NO_ERRCODE, "imklog: ruleset '%s' not found - " + "using default ruleset instead", modConf->pszBindRuleset); +} + +static void +initConfigSettings(void) +{ + cs.bPermitNonKernel = 0; + cs.bParseKernelStamp = 0; + cs.bKeepKernelStamp = 0; + cs.console_log_level = -1; + cs.pszPath = NULL; + cs.iFacilIntMsg = klogFacilIntMsg(); +} + + +/* enqueue the the kernel message into the message queue. + * The provided msg string is not freed - thus must be done + * by the caller. + * rgerhards, 2008-04-12 + */ +static rsRetVal +enqMsg(uchar *const __restrict__ msg, + uchar* pszTag, + const syslog_pri_t pri, + struct timeval *tp, + ratelimit_t *ratelimiter) +{ + struct syslogTime st; + smsg_t *pMsg; + DEFiRet; + + assert(msg != NULL); + assert(pszTag != NULL); + + if(tp == NULL) { + CHKiRet(msgConstruct(&pMsg)); + } else { + datetime.timeval2syslogTime(tp, &st, TIME_IN_LOCALTIME); + CHKiRet(msgConstructWithTime(&pMsg, &st, tp->tv_sec)); + } + MsgSetFlowControlType(pMsg, eFLOWCTL_LIGHT_DELAY); + MsgSetInputName(pMsg, pInputName); + MsgSetRawMsgWOSize(pMsg, (char*)msg); + MsgSetRuleset(pMsg, runModConf->pBindRuleset); + MsgSetMSGoffs(pMsg, 0); /* we do not have a header... */ + MsgSetRcvFrom(pMsg, glbl.GetLocalHostNameProp()); + MsgSetRcvFromIP(pMsg, pLocalHostIP); + MsgSetHOSTNAME(pMsg, glbl.GetLocalHostName(), ustrlen(glbl.GetLocalHostName())); + MsgSetTAG(pMsg, pszTag, ustrlen(pszTag)); + msgSetPRI(pMsg, pri); + ratelimitAddMsg(ratelimiter, NULL, pMsg); +finalize_it: + RETiRet; +} + +/* parse the PRI from a kernel message. At least BSD seems to have + * non-kernel messages inside the kernel log... + * Expected format: "<pri>". piPri is only valid if the function + * successfully returns. If there was a proper pri ppSz is advanced to the + * position right after ">". + * rgerhards, 2008-04-14 + */ +static rsRetVal +parsePRI(uchar **ppSz, syslog_pri_t *piPri) +{ + DEFiRet; + syslog_pri_t i; + uchar *pSz; + + assert(ppSz != NULL); + pSz = *ppSz; + assert(pSz != NULL); + assert(piPri != NULL); + + if(*pSz != '<' || !isdigit(*(pSz+1))) + ABORT_FINALIZE(RS_RET_INVALID_PRI); + + ++pSz; + i = 0; + while(isdigit(*pSz) && i <= LOG_MAXPRI) { + i = i * 10 + *pSz++ - '0'; + } + + if(*pSz != '>' || i > LOG_MAXPRI) + ABORT_FINALIZE(RS_RET_INVALID_PRI); + + /* OK, we have a valid PRI */ + *piPri = i; + *ppSz = pSz + 1; /* update msg ptr to position after PRI */ + +finalize_it: + RETiRet; +} + + +/* log an imklog-internal message + * rgerhards, 2008-04-14 + */ +rsRetVal imklogLogIntMsg(syslog_pri_t priority, const char *fmt, ...) +{ + DEFiRet; + va_list ap; + uchar msgBuf[2048]; /* we use the same size as sysklogd to remain compatible */ + + va_start(ap, fmt); + vsnprintf((char*)msgBuf, sizeof(msgBuf), fmt, ap); + va_end(ap); + + logmsgInternal(NO_ERRCODE, priority, msgBuf, 0); + + RETiRet; +} + + +/* log a kernel message. If tp is non-NULL, it contains the message creation + * time to use. + * rgerhards, 2008-04-14 + */ +rsRetVal Syslog(modConfData_t *pModConf, syslog_pri_t priority, uchar *pMsg, struct timeval *tp) +{ + syslog_pri_t pri; + int bPRISet = 0; + rsRetVal localRet; + DEFiRet; + + /* then check if we have two PRIs. This can happen in case of systemd, + * in which case the second PRI is the right one. + */ + if(pMsg[3] == '<' || (pMsg[3] == ' ' && pMsg[4] == '<')) { /* could be a pri... */ + uchar *pMsgTmp = pMsg + ((pMsg[3] == '<') ? 3 : 4); + localRet = parsePRI(&pMsgTmp, &pri); + if(localRet == RS_RET_OK && pri >= 8 && pri <= LOG_MAXPRI) { + /* *this* is our PRI */ + DBGPRINTF("imklog detected secondary PRI(%d) in klog msg\n", pri); + pMsg = pMsgTmp; + priority = pri; + bPRISet = 1; + } + } + if(!bPRISet) { + localRet = parsePRI(&pMsg, &priority); + if(localRet != RS_RET_INVALID_PRI && localRet != RS_RET_OK) + FINALIZE; + } + /* if we don't get the pri, we use whatever we were supplied */ + + /* ignore non-kernel messages if not permitted */ + if(pModConf->bPermitNonKernel == 0 && pri2fac(priority) != LOG_KERN) + FINALIZE; /* silently ignore */ + iRet = enqMsg((uchar*)pMsg, (uchar*) "kernel:", priority, tp, pModConf->ratelimiter); + +finalize_it: + RETiRet; +} + + +/* helper for some klog drivers which need to know the MaxLine global setting. They can + * not obtain it themselfs, because they are no modules and can not query the object hander. + * It would probably be a good idea to extend the interface to support it, but so far + * we create a (sufficiently valid) work-around. -- rgerhards, 2008-11-24 + */ +int klog_getMaxLine(void) +{ + return glbl.GetMaxLine(runConf); +} + + +BEGINrunInput +CODESTARTrunInput + /* this is an endless loop - it is terminated when the thread is + * signalled to do so. This, however, is handled by the framework, + * right into the sleep below. + */ + while(!pThrd->bShallStop) { + /* klogLogKMsg() waits for the next kernel message, obtains it + * and then submits it to the rsyslog main queue. + * rgerhards, 2008-04-09 + */ + CHKiRet(klogLogKMsg(runModConf)); + } +finalize_it: +ENDrunInput + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + /* init our settings */ + pModConf->pszPath = NULL; + pModConf->bPermitNonKernel = 0; + pModConf->bParseKernelStamp = 0; + pModConf->bKeepKernelStamp = 0; + pModConf->console_log_level = -1; + pModConf->bKeepKernelStamp = 0; + pModConf->iFacilIntMsg = klogFacilIntMsg(); + loadModConf->configSetViaV2Method = 0; + pModConf->ratelimiter = NULL; + pModConf->ratelimitBurst = 10000; /* arbitrary high limit */ + pModConf->ratelimitInterval = 0; /* off */ + bLegacyCnfModGlobalsPermitted = 1; + /* init legacy config vars */ + initConfigSettings(); +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for imklog:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "logpath")) { + loadModConf->pszPath = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "permitnonkernelfacility")) { + loadModConf->bPermitNonKernel = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "parsekerneltimestamp")) { + loadModConf->bParseKernelStamp = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "keepkerneltimestamp")) { + loadModConf->bKeepKernelStamp = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "consoleloglevel")) { + loadModConf->console_log_level= (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "internalmsgfacility")) { + loadModConf->iFacilIntMsg = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "ratelimitburst")) { + loadModConf->ratelimitBurst = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "ratelimitinterval")) { + loadModConf->ratelimitInterval = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "ruleset")) { + loadModConf->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + LogMsg(0, RS_RET_INTERNAL_ERROR, LOG_WARNING, + "imklog: RSYSLOG BUG, non-handled param '%s' in " + "beginCnfLoad\n", modpblk.descr[i].name); + } + } + + /* disable legacy module-global config directives */ + bLegacyCnfModGlobalsPermitted = 0; + loadModConf->configSetViaV2Method = 1; + +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(!loadModConf->configSetViaV2Method) { + /* persist module-specific settings from legacy config system */ + loadModConf->bPermitNonKernel = cs.bPermitNonKernel; + loadModConf->bParseKernelStamp = cs.bParseKernelStamp; + loadModConf->bKeepKernelStamp = cs.bKeepKernelStamp; + loadModConf->iFacilIntMsg = cs.iFacilIntMsg; + loadModConf->console_log_level = cs.console_log_level; + if((cs.pszPath == NULL) || (cs.pszPath[0] == '\0')) { + loadModConf->pszPath = NULL; + if(cs.pszPath != NULL) + free(cs.pszPath); + } else { + loadModConf->pszPath = cs.pszPath; + } + cs.pszPath = NULL; + } + + loadModConf = NULL; /* done loading */ +ENDendCnfLoad + + +BEGINcheckCnf +CODESTARTcheckCnf + std_mod_checkRuleset(pModConf); +ENDcheckCnf + + +BEGINactivateCnfPrePrivDrop +CODESTARTactivateCnfPrePrivDrop + runModConf = pModConf; + iRet = klogWillRunPrePrivDrop(runModConf); +ENDactivateCnfPrePrivDrop + + +BEGINactivateCnf +CODESTARTactivateCnf + CHKiRet(ratelimitNew(&runModConf->ratelimiter, "imklog", NULL)); + ratelimitSetLinuxLike(runModConf->ratelimiter, + runModConf->ratelimitInterval, + runModConf->ratelimitBurst); +finalize_it: +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf + free(pModConf->pszBindRuleset); +ENDfreeCnf + + +BEGINwillRun +CODESTARTwillRun + pLocalHostIP = glbl.GetLocalHostIP(); + iRet = klogWillRunPostPrivDrop(runModConf); +ENDwillRun + + +BEGINafterRun +CODESTARTafterRun + ratelimitDestruct(runModConf->ratelimiter); + iRet = klogAfterRun(runModConf); +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + if(pInputName != NULL) + prop.Destruct(&pInputName); + + /* release objects we used */ + objRelease(glbl, CORE_COMPONENT); + objRelease(net, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES +ENDqueryEtryPt + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + cs.bPermitNonKernel = 0; + cs.bParseKernelStamp = 0; + cs.bKeepKernelStamp = 0; + if(cs.pszPath != NULL) { + free(cs.pszPath); + cs.pszPath = NULL; + } + cs.iFacilIntMsg = klogFacilIntMsg(); + return RS_RET_OK; +} + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + CHKiRet(objUse(net, CORE_COMPONENT)); + + /* we need to create the inputName property (only once during our lifetime) */ + CHKiRet(prop.CreateStringProp(&pInputName, UCHAR_CONSTANT("imklog"), sizeof("imklog") - 1)); + + /* init legacy config settings */ + initConfigSettings(); + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"klogLocalipif", 0, eCmdHdlrGoneAway, + NULL, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"debugprintkernelsymbols", 0, eCmdHdlrGoneAway, + NULL, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(regCfSysLineHdlr2((uchar *)"klogpath", 0, eCmdHdlrGetWord, + NULL, &cs.pszPath, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"klogsymbollookup", 0, eCmdHdlrGoneAway, + NULL, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"klogsymbolstwice", 0, eCmdHdlrGoneAway, + NULL, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"klogusesyscallinterface", 0, eCmdHdlrGoneAway, + NULL, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(regCfSysLineHdlr2((uchar *)"klogpermitnonkernelfacility", 0, eCmdHdlrBinary, + NULL, &cs.bPermitNonKernel, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"klogconsoleloglevel", 0, eCmdHdlrInt, + NULL, &cs.console_log_level, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"kloginternalmsgfacility", 0, eCmdHdlrFacility, + NULL, &cs.iFacilIntMsg, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"klogparsekerneltimestamp", 0, eCmdHdlrBinary, + NULL, &cs.bParseKernelStamp, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"klogkeepkerneltimestamp", 0, eCmdHdlrBinary, + NULL, &cs.bKeepKernelStamp, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit diff --git a/plugins/imklog/imklog.h b/plugins/imklog/imklog.h new file mode 100644 index 0000000..0ccc320 --- /dev/null +++ b/plugins/imklog/imklog.h @@ -0,0 +1,77 @@ +/* imklog.h + * These are the definitions for the klog message generation module. + * + * File begun on 2007-12-17 by RGerhards + * Major change: 2008-04-09: switched to a driver interface for + * several platforms + * + * Copyright 2007-2015 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef IMKLOG_H_INCLUDED +#define IMKLOG_H_INCLUDED 1 + +#include "rsyslog.h" +#include "dirty.h" +#include "ratelimit.h" + +/* we need to have the modConf type present in all submodules */ +struct modConfData_s { + rsconf_t *pConf; + int iFacilIntMsg; + uchar *pszPath; + int console_log_level; + sbool bParseKernelStamp; + sbool bKeepKernelStamp; + sbool bPermitNonKernel; + sbool configSetViaV2Method; + ratelimit_t *ratelimiter; + int ratelimitInterval; + int ratelimitBurst; + ruleset_t *pBindRuleset; /* ruleset to bind (use system default if unspecified) */ + uchar *pszBindRuleset; +}; + +/* interface to "drivers" + * the platform specific drivers must implement these entry points. Only one + * driver may be active at any given time, thus we simply rely on the linker + * to resolve the addresses. + * rgerhards, 2008-04-09 + */ +rsRetVal klogLogKMsg(modConfData_t *pModConf); +rsRetVal klogAfterRun(modConfData_t *pModConf); +rsRetVal klogWillRunPrePrivDrop(modConfData_t *pModConf); +rsRetVal klogWillRunPostPrivDrop(modConfData_t *pModConf); +int klogFacilIntMsg(void); + +/* the functions below may be called by the drivers */ +rsRetVal imklogLogIntMsg(syslog_pri_t priority, const char *fmt, ...) __attribute__((format(printf,2, 3))); +rsRetVal Syslog(modConfData_t *pModConf, syslog_pri_t priority, uchar *msg, struct timeval *tp); + +/* prototypes */ +extern int klog_getMaxLine(void); /* work-around for klog drivers to get configured max line size */ +extern int InitKsyms(modConfData_t*); +extern void DeinitKsyms(void); +extern int InitMsyms(void); +extern void DeinitMsyms(void); +extern char * ExpandKadds(char *, char *); +extern void SetParanoiaLevel(int); + +#endif /* #ifndef IMKLOG_H_INCLUDED */ +/* vi:set ai: + */ diff --git a/plugins/immark/Makefile.am b/plugins/immark/Makefile.am new file mode 100644 index 0000000..85b2e14 --- /dev/null +++ b/plugins/immark/Makefile.am @@ -0,0 +1,11 @@ +pkglib_LTLIBRARIES = immark.la + +immark_la_SOURCES = immark.c immark.h +immark_la_CPPFLAGS = $(RSRT_CFLAGS) -I$(top_srcdir) $(PTHREADS_CFLAGS) +immark_la_LDFLAGS = -module -avoid-version +immark_la_LIBADD = + +if ENABLE_LIBLOGGING_STDLOG +immark_la_CPPFLAGS += $(LIBLOGGING_STDLOG_CFLAGS) +immark_la_LDFLAGS += $(LIBLOGGING_STDLOG_LIBS) +endif diff --git a/plugins/immark/Makefile.in b/plugins/immark/Makefile.in new file mode 100644 index 0000000..3d73940 --- /dev/null +++ b/plugins/immark/Makefile.in @@ -0,0 +1,799 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/immark/immark.c b/plugins/immark/immark.c new file mode 100644 index 0000000..af893a3 --- /dev/null +++ b/plugins/immark/immark.c @@ -0,0 +1,337 @@ +/* immark.c + * This is the implementation of the build-in mark message input module. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * File begun on 2007-07-20 by RGerhards (extracted from syslogd.c) + * This file is under development and has not yet arrived at being fully + * self-contained and a real object. So far, it is mostly an excerpt + * of the "old" message code without any modifications. However, it + * helps to have things at the right place one we go to the meat of it. + * + * Copyright 2007-2020 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdlib.h> +#include <stdio.h> +#include <assert.h> +#include <signal.h> +#include <string.h> +#include <pthread.h> +#include "dirty.h" +#include "cfsysline.h" +#include "module-template.h" +#include "errmsg.h" +#include "msg.h" +#include "srUtils.h" +#include "glbl.h" +#include "unicode-helper.h" +#include "ruleset.h" +#include "prop.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("immark") + +/* defines */ +#define DEFAULT_MARK_PERIOD (20 * 60) + +/* Module static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(prop) +DEFobjCurrIf(ruleset) + +static int iMarkMessagePeriod = DEFAULT_MARK_PERIOD; +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + const char *pszMarkMsgText; + size_t lenMarkMsgText; + uchar *pszBindRuleset; + ruleset_t *pBindRuleset; + int flags; + int bUseMarkFlag; + int bUseSyslogAPI; + int iMarkMessagePeriod; + sbool configSetViaV2Method; +}; + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "ruleset", eCmdHdlrString, 0 }, + { "markmessagetext", eCmdHdlrString, 0 }, + { "use.syslogcall", eCmdHdlrBinary, 0 }, + { "use.markflag", eCmdHdlrBinary, 0 }, + { "interval", eCmdHdlrInt, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ +static prop_t *pInternalInputName = NULL; + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINafterRun +CODESTARTafterRun +ENDafterRun + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + /* init our settings */ + pModConf->pszMarkMsgText = NULL; + pModConf->iMarkMessagePeriod = DEFAULT_MARK_PERIOD; + pModConf->bUseSyslogAPI = 1; + pModConf->bUseMarkFlag = 1; + pModConf->pszBindRuleset = NULL; + pModConf->pBindRuleset = NULL; + loadModConf->configSetViaV2Method = 0; + bLegacyCnfModGlobalsPermitted = 1; +ENDbeginCnfLoad + +static rsRetVal +checkRuleset(modConfData_t *modConf) +{ + ruleset_t *pRuleset; + rsRetVal localRet; + DEFiRet; + + if(modConf->pszBindRuleset == NULL) + FINALIZE; + + localRet = ruleset.GetRuleset(modConf->pConf, &pRuleset, modConf->pszBindRuleset); + if(localRet == RS_RET_NOT_FOUND) { + LogError(0, NO_ERRCODE, "immark: ruleset '%s' not found - " + "using default ruleset instead", modConf->pszBindRuleset); + } + CHKiRet(localRet); + modConf->pBindRuleset = pRuleset; + +finalize_it: + RETiRet; +} + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for immark:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "interval")) { + loadModConf->iMarkMessagePeriod = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "use.syslogcall")) { + loadModConf->bUseSyslogAPI = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "use.markflag")) { + loadModConf->bUseMarkFlag = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "ruleset")) { + loadModConf->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "markmessagetext")) { + loadModConf->pszMarkMsgText = es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("immark: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + + /* disable legacy module-global config directives */ + bLegacyCnfModGlobalsPermitted = 0; + loadModConf->configSetViaV2Method = 1; + +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(!loadModConf->configSetViaV2Method) { + pModConf->iMarkMessagePeriod = iMarkMessagePeriod; + } +ENDendCnfLoad + + +BEGINcheckCnf +CODESTARTcheckCnf + pModConf->flags = (pModConf->bUseMarkFlag) ? MARK : 0; + if(pModConf->pszMarkMsgText == NULL) { + pModConf->pszMarkMsgText = strdup("-- MARK --"); + } + pModConf->lenMarkMsgText = strlen(pModConf->pszMarkMsgText); + if(pModConf->pszBindRuleset != NULL) { + checkRuleset(pModConf); + if(pModConf->bUseSyslogAPI) { + LogError(0, NO_ERRCODE, "immark: ruleset specified, but configured to log " + "via syslog call - switching to rsyslog-internal logging"); + pModConf->bUseSyslogAPI = 0; + } + } + if(pModConf->iMarkMessagePeriod == 0) { + LogError(0, NO_ERRCODE, "immark: mark message period must not be 0, can not run"); + ABORT_FINALIZE(RS_RET_NO_RUN); /* we can not run with this error */ + } +finalize_it: +ENDcheckCnf + + +BEGINactivateCnf +CODESTARTactivateCnf + MarkInterval = pModConf->iMarkMessagePeriod; + DBGPRINTF("immark set MarkInterval to %d\n", MarkInterval); +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +static rsRetVal +injectMarkMessage(const int pri) +{ + smsg_t *pMsg; + DEFiRet; + + CHKiRet(msgConstruct(&pMsg)); + pMsg->msgFlags = loadModConf->flags; + MsgSetInputName(pMsg, pInternalInputName); + MsgSetRawMsg(pMsg, loadModConf->pszMarkMsgText,loadModConf->lenMarkMsgText); + MsgSetHOSTNAME(pMsg, glbl.GetLocalHostName(), ustrlen(glbl.GetLocalHostName())); + MsgSetRcvFrom(pMsg, glbl.GetLocalHostNameProp()); + MsgSetRcvFromIP(pMsg, glbl.GetLocalHostIP()); + MsgSetMSGoffs(pMsg, 0); + MsgSetTAG(pMsg, (const uchar*)"rsyslogd:", sizeof("rsyslogd:")-1); + msgSetPRI(pMsg, pri); + MsgSetRuleset(pMsg, loadModConf->pBindRuleset); + submitMsg2(pMsg); +finalize_it: + RETiRet; +} + +/* This function is called to gather input. It must terminate only + * a) on failure (iRet set accordingly) + * b) on termination of the input module (as part of the unload process) + * Code begun 2007-12-12 rgerhards + * + * This code must simply spawn emit a mark message at each mark interval. + * We are running on our own thread, so this is extremely easy: we just + * sleep MarkInterval seconds and each time we awake, we inject the message. + * Please note that we do not do the other fancy things that sysklogd + * (and pre 1.20.2 releases of rsyslog) did in mark procesing. They simply + * do not belong here. + */ +BEGINrunInput +CODESTARTrunInput + /* this is an endless loop - it is terminated when the thread is + * signalled to do so. This, however, is handled by the framework, + * right into the sleep below. + */ + while(1) { + srSleep(MarkInterval, 0); /* seconds, micro seconds */ + + if(glbl.GetGlobalInputTermState() == 1) + break; /* terminate input! */ + + dbgprintf("immark: injecting mark message\n"); + if(loadModConf->bUseSyslogAPI) { + logmsgInternal(NO_ERRCODE, LOG_SYSLOG|LOG_INFO, + (uchar*)loadModConf->pszMarkMsgText, loadModConf->flags); + } else { + injectMarkMessage(LOG_SYSLOG|LOG_INFO); + } + } +ENDrunInput + + +BEGINwillRun +CODESTARTwillRun +ENDwillRun + + +BEGINmodExit +CODESTARTmodExit + if(pInternalInputName != NULL) + prop.Destruct(&pInternalInputName); + objRelease(ruleset, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + iMarkMessagePeriod = DEFAULT_MARK_PERIOD; + return RS_RET_OK; +} + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + + /* we need to create the inputName property (only once during our lifetime) */ + CHKiRet(prop.Construct(&pInternalInputName)); + CHKiRet(prop.SetString(pInternalInputName, UCHAR_CONSTANT("immark"), sizeof("immark") - 1)); + CHKiRet(prop.ConstructFinalize(pInternalInputName)); + + /* legacy config handlers */ + CHKiRet(regCfSysLineHdlr2((uchar *)"markmessageperiod", 0, eCmdHdlrInt, NULL, + &iMarkMessagePeriod, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit diff --git a/plugins/immark/immark.h b/plugins/immark/immark.h new file mode 100644 index 0000000..bdb029b --- /dev/null +++ b/plugins/immark/immark.h @@ -0,0 +1,34 @@ +/* immark.h + * These are the definitions for the built-in mark message generation module. This + * file may disappear when this has become a loadable module. + * + * File begun on 2007-12-12 by RGerhards (extracted from syslogd.c) + * + * Copyright 2007-2012 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef IMMARK_H_INCLUDED +#define IMMARK_H_INCLUDED 1 + +/* prototypes */ +rsRetVal immark_runInput(void); + +#endif /* #ifndef IMMARK_H_INCLUDED */ +/* + * vi:set ai: + */ diff --git a/plugins/impstats/Makefile.am b/plugins/impstats/Makefile.am new file mode 100644 index 0000000..187bbca --- /dev/null +++ b/plugins/impstats/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = impstats.la + +impstats_la_SOURCES = impstats.c +impstats_la_CPPFLAGS = $(RSRT_CFLAGS) -I$(top_srcdir) $(PTHREADS_CFLAGS) +impstats_la_LDFLAGS = -module -avoid-version +impstats_la_LIBADD = diff --git a/plugins/impstats/Makefile.in b/plugins/impstats/Makefile.in new file mode 100644 index 0000000..58bdf49 --- /dev/null +++ b/plugins/impstats/Makefile.in @@ -0,0 +1,796 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/impstats/impstats.c b/plugins/impstats/impstats.c new file mode 100644 index 0000000..6dbe935 --- /dev/null +++ b/plugins/impstats/impstats.c @@ -0,0 +1,635 @@ +/* impstats.c + * A module to periodically output statistics gathered by rsyslog. + * + * Copyright 2010-2018 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdlib.h> +#include <stdio.h> +#include <assert.h> +#include <signal.h> +#include <string.h> +#include <pthread.h> +#include <fcntl.h> +#include <unistd.h> +#include <sys/uio.h> +#include <sys/stat.h> +#include <errno.h> +#include <sys/time.h> +#include <sys/resource.h> +#ifdef OS_LINUX +#include <sys/types.h> +#include <dirent.h> +#endif + +#include "dirty.h" +#include "cfsysline.h" +#include "module-template.h" +#include "errmsg.h" +#include "msg.h" +#include "srUtils.h" +#include "unicode-helper.h" +#include "glbl.h" +#include "statsobj.h" +#include "prop.h" +#include "ruleset.h" +#include "parserif.h" + + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("impstats") + +/* defines */ +#define DEFAULT_STATS_PERIOD (5 * 60) +#define DEFAULT_FACILITY 5 /* syslog */ +#define DEFAULT_SEVERITY 6 /* info */ + +/* Module static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(prop) +DEFobjCurrIf(statsobj) +DEFobjCurrIf(ruleset) + +typedef struct configSettings_s { + int iStatsInterval; + int iFacility; + int iSeverity; + int bJSON; + int bCEE; +} configSettings_t; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + int iStatsInterval; + int iFacility; + int iSeverity; + int logfd; /* fd if logging to file, or -1 if closed */ + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + statsFmtType_t statsFmt; + sbool bLogToSyslog; + sbool bResetCtrs; + sbool bBracketing; + char *logfile; + sbool configSetViaV2Method; + uchar *pszBindRuleset; /* name of ruleset to bind to */ +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */ + +static configSettings_t cs; +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ +static prop_t *pInputName = NULL; + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "interval", eCmdHdlrInt, 0 }, + { "facility", eCmdHdlrInt, 0 }, + { "severity", eCmdHdlrInt, 0 }, + { "bracketing", eCmdHdlrBinary, 0 }, + { "log.syslog", eCmdHdlrBinary, 0 }, + { "resetcounters", eCmdHdlrBinary, 0 }, + { "log.file", eCmdHdlrGetWord, 0 }, + { "format", eCmdHdlrGetWord, 0 }, + { "ruleset", eCmdHdlrString, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + + +/* resource use stats counters */ +#ifdef OS_LINUX +static int st_openfiles; +#endif +static intctr_t st_ru_utime; +static intctr_t st_ru_stime; +static intctr_t st_ru_maxrss; +static intctr_t st_ru_minflt; +static intctr_t st_ru_majflt; +static intctr_t st_ru_inblock; +static intctr_t st_ru_oublock; +static intctr_t st_ru_nvcsw; +static intctr_t st_ru_nivcsw; +static statsobj_t *statsobj_resources; + +static pthread_mutex_t hup_mutex = PTHREAD_MUTEX_INITIALIZER; + +BEGINmodExit +CODESTARTmodExit + prop.Destruct(&pInputName); + /* release objects we used */ + objRelease(glbl, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(statsobj, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); +ENDmodExit + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +#ifdef OS_LINUX +/* count number of open files (linux specific) */ +static void +countOpenFiles(void) +{ + char proc_path[MAXFNAME]; + DIR *dp; + struct dirent *files; + + st_openfiles = 0; + snprintf(proc_path, sizeof(proc_path), "/proc/%d/fd", glblGetOurPid()); + if((dp = opendir(proc_path)) == NULL) { + LogError(errno, RS_RET_ERR, "impstats: error reading %s\n", proc_path); + goto done; + } + while((files=readdir(dp)) != NULL) { + if(!strcmp(files->d_name, ".") || !strcmp(files->d_name, "..")) + continue; + st_openfiles++; + } + closedir(dp); + +done: + return; +} +#endif + + +static void +initConfigSettings(void) +{ + cs.iStatsInterval = DEFAULT_STATS_PERIOD; + cs.iFacility = DEFAULT_FACILITY; + cs.iSeverity = DEFAULT_SEVERITY; + cs.bJSON = 0; + cs.bCEE = 0; +} + + +/* actually submit a message to the rsyslog core + */ +static void +doSubmitMsg(uchar *line) +{ + smsg_t *pMsg; + + if(msgConstruct(&pMsg) != RS_RET_OK) + goto finalize_it; + MsgSetInputName(pMsg, pInputName); + MsgSetRawMsgWOSize(pMsg, (char*)line); + MsgSetHOSTNAME(pMsg, glbl.GetLocalHostName(), ustrlen(glbl.GetLocalHostName())); + MsgSetRcvFrom(pMsg, glbl.GetLocalHostNameProp()); + MsgSetRcvFromIP(pMsg, glbl.GetLocalHostIP()); + MsgSetMSGoffs(pMsg, 0); + MsgSetRuleset(pMsg, runModConf->pBindRuleset); + MsgSetTAG(pMsg, UCHAR_CONSTANT("rsyslogd-pstats:"), sizeof("rsyslogd-pstats:") - 1); + pMsg->iFacility = runModConf->iFacility; + pMsg->iSeverity = runModConf->iSeverity; + pMsg->msgFlags = 0; + + /* we do not use rate-limiting, as the stats message always need to be emitted */ + submitMsg2(pMsg); + DBGPRINTF("impstats: submit [%d,%d] msg '%s'\n", runModConf->iFacility, + runModConf->iSeverity, line); + +finalize_it: + return; +} + + +/* log stats message to file; limited error handling done */ +static void +doLogToFile(const char *ln, const size_t lenLn) +{ + struct iovec iov[4]; + ssize_t nwritten; + ssize_t nexpect; + time_t t; + char timebuf[32]; + + pthread_mutex_lock(&hup_mutex); + + if(lenLn == 0) + goto done; + + if(runModConf->logfd == -1) { + runModConf->logfd = open(runModConf->logfile, O_WRONLY|O_CREAT|O_APPEND|O_CLOEXEC, S_IRUSR|S_IWUSR); + if(runModConf->logfd == -1) { + DBGPRINTF("impstats: error opening stats file %s\n", + runModConf->logfile); + goto done; + } else { + DBGPRINTF("impstats: opened stats file %s\n", + runModConf->logfile); + } + } + + time(&t); + iov[0].iov_base = ctime_r(&t, timebuf); + iov[0].iov_len = nexpect = strlen(iov[0].iov_base) - 1; /* -1: strip \n */ + iov[1].iov_base = (void*)": "; + iov[1].iov_len = 2; + nexpect += 2; + iov[2].iov_base = (void*)ln; + iov[2].iov_len = lenLn; + nexpect += lenLn; + iov[3].iov_base = (void*)"\n"; + iov[3].iov_len = 1; + nexpect++; + nwritten = writev(runModConf->logfd, iov, 4); + + if(nwritten != nexpect) { + dbgprintf("error writing stats file %s, nwritten %lld, expected %lld\n", + runModConf->logfile, (long long) nwritten, (long long) nexpect); + } +done: + pthread_mutex_unlock(&hup_mutex); + return; +} + + +/* submit a line to our log destinations. Line must be fully formatted as + * required (but may be a simple verb like "BEGIN" and "END". + */ +static rsRetVal +submitLine(const char *const ln, const size_t lenLn) +{ + DEFiRet; + if(runModConf->bLogToSyslog) + doSubmitMsg((uchar*)ln); + if(runModConf->logfile != NULL) + doLogToFile(ln, lenLn); + RETiRet; +} + +/* callback for statsobj + * Note: usrptr exists only to satisfy requirements of statsobj callback interface! + */ +static rsRetVal +doStatsLine(void __attribute__((unused)) *usrptr, const char *const str) +{ + DEFiRet; + iRet = submitLine(str, strlen(str)); + RETiRet; +} + + +/* the function to generate the actual statistics messages + * rgerhards, 2010-09-09 + */ +static void +generateStatsMsgs(void) +{ + struct rusage ru; + int r; + r = getrusage(RUSAGE_SELF, &ru); + if(r != 0) { + dbgprintf("impstats: getrusage() failed with error %d, zeroing out\n", errno); + memset(&ru, 0, sizeof(ru)); + } +# ifdef OS_LINUX + countOpenFiles(); +# endif + st_ru_utime = ru.ru_utime.tv_sec * 1000000 + ru.ru_utime.tv_usec; + st_ru_stime = ru.ru_stime.tv_sec * 1000000 + ru.ru_stime.tv_usec; + st_ru_maxrss = ru.ru_maxrss; + st_ru_minflt = ru.ru_minflt; + st_ru_majflt = ru.ru_majflt; + st_ru_inblock = ru.ru_inblock; + st_ru_oublock = ru.ru_oublock; + st_ru_nvcsw = ru.ru_nvcsw; + st_ru_nivcsw = ru.ru_nivcsw; + statsobj.GetAllStatsLines(doStatsLine, NULL, runModConf->statsFmt, runModConf->bResetCtrs); +} + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + /* init our settings */ + loadModConf->configSetViaV2Method = 0; + loadModConf->iStatsInterval = DEFAULT_STATS_PERIOD; + loadModConf->iFacility = DEFAULT_FACILITY; + loadModConf->iSeverity = DEFAULT_SEVERITY; + loadModConf->statsFmt = statsFmt_Legacy; + loadModConf->logfd = -1; + loadModConf->logfile = NULL; + loadModConf->pszBindRuleset = NULL; + loadModConf->bLogToSyslog = 1; + loadModConf->bBracketing = 0; + loadModConf->bResetCtrs = 0; + bLegacyCnfModGlobalsPermitted = 1; + /* init legacy config vars */ + initConfigSettings(); +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + char *mode; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for impstats:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "interval")) { + loadModConf->iStatsInterval = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "facility")) { + loadModConf->iFacility = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "severity")) { + loadModConf->iSeverity = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "bracketing")) { + loadModConf->bBracketing = (sbool) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "log.syslog")) { + loadModConf->bLogToSyslog = (sbool) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "resetcounters")) { + loadModConf->bResetCtrs = (sbool) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "log.file")) { + loadModConf->logfile = es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "format")) { + mode = es_str2cstr(pvals[i].val.d.estr, NULL); + if(!strcasecmp(mode, "json")) { + loadModConf->statsFmt = statsFmt_JSON; + } else if(!strcasecmp(mode, "json-elasticsearch")) { + loadModConf->statsFmt = statsFmt_JSON_ES; + } else if(!strcasecmp(mode, "cee")) { + loadModConf->statsFmt = statsFmt_CEE; + } else if(!strcasecmp(mode, "legacy")) { + loadModConf->statsFmt = statsFmt_Legacy; + } else { + LogError(0, RS_RET_ERR, "impstats: invalid format %s", + mode); + } + free(mode); + } else if(!strcmp(modpblk.descr[i].name, "ruleset")) { + loadModConf->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("impstats: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + + if(loadModConf->pszBindRuleset != NULL && loadModConf->bLogToSyslog == 0) { + parser_warnmsg("impstats: log.syslog set to \"off\" but ruleset specified - with " + "these settings, the ruleset will never be used, because regular syslog " + "processing is turned off - ruleset parameter is ignored"); + free(loadModConf->pszBindRuleset); + loadModConf->pszBindRuleset = NULL; + } + + loadModConf->configSetViaV2Method = 1; + bLegacyCnfModGlobalsPermitted = 0; + +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(!loadModConf->configSetViaV2Method) { + /* persist module-specific settings from legacy config system */ + loadModConf->iStatsInterval = cs.iStatsInterval; + loadModConf->iFacility = cs.iFacility; + loadModConf->iSeverity = cs.iSeverity; + if (cs.bCEE == 1) { + loadModConf->statsFmt = statsFmt_CEE; + } else if (cs.bJSON == 1) { + loadModConf->statsFmt = statsFmt_JSON; + } else { + loadModConf->statsFmt = statsFmt_Legacy; + } + } +ENDendCnfLoad + + +/* we need our special version of checkRuleset(), as we do not have any instances */ +static rsRetVal +checkRuleset(modConfData_t *modConf) +{ + ruleset_t *pRuleset; + rsRetVal localRet; + DEFiRet; + + modConf->pBindRuleset = NULL; /* assume default ruleset */ + + if(modConf->pszBindRuleset == NULL) + FINALIZE; + + localRet = ruleset.GetRuleset(modConf->pConf, &pRuleset, modConf->pszBindRuleset); + if(localRet == RS_RET_NOT_FOUND) { + LogError(0, NO_ERRCODE, "impstats: ruleset '%s' not found - " + "using default ruleset instead", modConf->pszBindRuleset); + } + CHKiRet(localRet); + modConf->pBindRuleset = pRuleset; +finalize_it: + RETiRet; +} + + +/* to use HUP, we need to have an instanceData type, as this was + * originally designed for actions. However, we do not, and cannot, + * use the content. The core will always provide a NULL pointer. + */ +typedef struct _instanceData { + int dummy; +} instanceData; +BEGINdoHUP +CODESTARTdoHUP + DBGPRINTF("impstats: received HUP\n") + pthread_mutex_lock(&hup_mutex); + if(runModConf->logfd != -1) { + DBGPRINTF("impstats: closing log file due to HUP\n"); + close(runModConf->logfd); + runModConf->logfd = -1; + } + pthread_mutex_unlock(&hup_mutex); +ENDdoHUP + + +BEGINcheckCnf +CODESTARTcheckCnf + if(pModConf->iStatsInterval == 0) { + LogError(0, NO_ERRCODE, "impstats: stats interval zero not permitted, using " + "default of %d seconds", DEFAULT_STATS_PERIOD); + pModConf->iStatsInterval = DEFAULT_STATS_PERIOD; + } + checkRuleset(pModConf); +ENDcheckCnf + + +BEGINactivateCnf + rsRetVal localRet; +CODESTARTactivateCnf + runModConf = pModConf; + DBGPRINTF("impstats: stats interval %d seconds, reset %d, logToSyslog %d, logFile %s\n", + runModConf->iStatsInterval, runModConf->bResetCtrs, runModConf->bLogToSyslog, + runModConf->logfile == NULL ? "deactivated" : (char*)runModConf->logfile); + localRet = statsobj.EnableStats(); + if(localRet != RS_RET_OK) { + LogError(0, localRet, "impstats: error enabling statistics gathering"); + ABORT_FINALIZE(RS_RET_NO_RUN); + } + /* initialize our own counters */ + CHKiRet(statsobj.Construct(&statsobj_resources)); + CHKiRet(statsobj.SetName(statsobj_resources, (uchar*)"resource-usage")); + CHKiRet(statsobj.SetOrigin(statsobj_resources, (uchar*)"impstats")); + CHKiRet(statsobj.AddCounter(statsobj_resources, UCHAR_CONSTANT("utime"), + ctrType_IntCtr, CTR_FLAG_NONE, &st_ru_utime)); + CHKiRet(statsobj.AddCounter(statsobj_resources, UCHAR_CONSTANT("stime"), + ctrType_IntCtr, CTR_FLAG_NONE, &st_ru_stime)); + CHKiRet(statsobj.AddCounter(statsobj_resources, UCHAR_CONSTANT("maxrss"), + ctrType_IntCtr, CTR_FLAG_NONE, &st_ru_maxrss)); + CHKiRet(statsobj.AddCounter(statsobj_resources, UCHAR_CONSTANT("minflt"), + ctrType_IntCtr, CTR_FLAG_NONE, &st_ru_minflt)); + CHKiRet(statsobj.AddCounter(statsobj_resources, UCHAR_CONSTANT("majflt"), + ctrType_IntCtr, CTR_FLAG_NONE, &st_ru_majflt)); + CHKiRet(statsobj.AddCounter(statsobj_resources, UCHAR_CONSTANT("inblock"), + ctrType_IntCtr, CTR_FLAG_NONE, &st_ru_inblock)); + CHKiRet(statsobj.AddCounter(statsobj_resources, UCHAR_CONSTANT("oublock"), + ctrType_IntCtr, CTR_FLAG_NONE, &st_ru_oublock)); + CHKiRet(statsobj.AddCounter(statsobj_resources, UCHAR_CONSTANT("nvcsw"), + ctrType_IntCtr, CTR_FLAG_NONE, &st_ru_nvcsw)); + CHKiRet(statsobj.AddCounter(statsobj_resources, UCHAR_CONSTANT("nivcsw"), + ctrType_IntCtr, CTR_FLAG_NONE, &st_ru_nivcsw)); +# ifdef OS_LINUX + CHKiRet(statsobj.AddCounter(statsobj_resources, UCHAR_CONSTANT("openfiles"), + ctrType_Int, CTR_FLAG_NONE, &st_openfiles)); +# endif + CHKiRet(statsobj.ConstructFinalize(statsobj_resources)); +finalize_it: + if(iRet != RS_RET_OK) { + LogError(0, iRet, "impstats: error activating module"); + iRet = RS_RET_NO_RUN; + } +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf + if(runModConf->logfd != -1) + close(runModConf->logfd); + free(runModConf->logfile); + free(runModConf->pszBindRuleset); +ENDfreeCnf + + +BEGINrunInput +CODESTARTrunInput + /* this is an endless loop - it is terminated when the thread is + * signalled to do so. This, however, is handled by the framework, + * right into the sleep below. Note that we DELIBERATLY output + * final set of stats counters on termination request. Depending + * on configuration, they may not make it to the final destination... + */ + while(glbl.GetGlobalInputTermState() == 0) { + srSleep(runModConf->iStatsInterval, 0); /* seconds, micro seconds */ + DBGPRINTF("impstats: woke up, generating messages\n"); + if(runModConf->bBracketing) + submitLine("BEGIN", sizeof("BEGIN")-1); + generateStatsMsgs(); + if(runModConf->bBracketing) + submitLine("END", sizeof("END")-1); + } +ENDrunInput + + +BEGINwillRun +CODESTARTwillRun +ENDwillRun + + +BEGINafterRun +CODESTARTafterRun +ENDafterRun + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +CODEqueryEtryPt_doHUP +ENDqueryEtryPt + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + initConfigSettings(); + return RS_RET_OK; +} + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + DBGPRINTF("impstats version %s loading\n", VERSION); + initConfigSettings(); + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + /* the pstatsinverval is an alias to support a previous screwed-up syntax... */ + CHKiRet(regCfSysLineHdlr2((uchar *)"pstatsinterval", 0, eCmdHdlrInt, NULL, &cs.iStatsInterval, + STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"pstatinterval", 0, eCmdHdlrInt, NULL, &cs.iStatsInterval, + STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"pstatfacility", 0, eCmdHdlrInt, NULL, &cs.iFacility, + STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"pstatseverity", 0, eCmdHdlrInt, NULL, &cs.iSeverity, + STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"pstatjson", 0, eCmdHdlrBinary, NULL, &cs.bJSON, + STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"pstatcee", 0, eCmdHdlrBinary, NULL, &cs.bCEE, + STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); + + CHKiRet(prop.Construct(&pInputName)); + CHKiRet(prop.SetString(pInputName, UCHAR_CONSTANT("impstats"), sizeof("impstats") - 1)); + CHKiRet(prop.ConstructFinalize(pInputName)); +ENDmodInit +/* vi:set ai: + */ diff --git a/plugins/imptcp/Makefile.am b/plugins/imptcp/Makefile.am new file mode 100644 index 0000000..bfacc88 --- /dev/null +++ b/plugins/imptcp/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = imptcp.la + +imptcp_la_SOURCES = imptcp.c +imptcp_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +imptcp_la_LDFLAGS = -module -avoid-version +imptcp_la_LIBADD = diff --git a/plugins/imptcp/Makefile.in b/plugins/imptcp/Makefile.in new file mode 100644 index 0000000..a24d6fe --- /dev/null +++ b/plugins/imptcp/Makefile.in @@ -0,0 +1,796 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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It is intentionally + * duplicate work (imtcp). The intent is to gain very fast and simple + * native ptcp support, utilizing the best interfaces Linux (no cross- + * platform intended!) has to offer. + * + * Note that in this module we try out some new naming conventions, + * so it may look a bit "different" from the other modules. We are + * investigating if removing prefixes can help make code more readable. + * + * File begun on 2010-08-10 by RGerhards + * + * Copyright 2007-2022 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#if !defined(HAVE_EPOLL_CREATE) +# error imptcp requires OS support for epoll - can not build + /* imptcp gains speed by using modern Linux capabilities. As such, + * it can only be build on platforms supporting the epoll API. + */ +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <assert.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <stdarg.h> +#include <ctype.h> +#include <netinet/in.h> +#include <netdb.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <sys/epoll.h> +#include <sys/queue.h> +#include <netinet/tcp.h> +#include <stdint.h> +#include <zlib.h> +#include <sys/stat.h> +#include <regex.h> +#if HAVE_FCNTL_H +#include <fcntl.h> +#endif +#ifdef HAVE_SYS_PRCTL_H +# include <sys/prctl.h> +#endif +#include "rsyslog.h" +#include "cfsysline.h" +#include "prop.h" +#include "dirty.h" +#include "module-template.h" +#include "unicode-helper.h" +#include "glbl.h" +#include "errmsg.h" +#include "srUtils.h" +#include "datetime.h" +#include "ruleset.h" +#include "msg.h" +#include "parserif.h" +#include "statsobj.h" +#include "ratelimit.h" +#include "net.h" /* for permittedPeers, may be removed when this is removed */ + +/* the define is from tcpsrv.h, we need to find a new (but easier!!!) abstraction layer some time ... */ +#define TCPSRV_NO_ADDTL_DELIMITER -1 /* specifies that no additional delimiter is to be used in TCP framing */ + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imptcp") + +/* static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(net) +DEFobjCurrIf(prop) +DEFobjCurrIf(datetime) +DEFobjCurrIf(ruleset) +DEFobjCurrIf(statsobj) + +/* forward references */ +static void * wrkr(void *myself); + +/* unfortunately, on some platforms EAGAIN == EWOULDBOLOCK and so checking against + * both of them generates a gcc 8 warning for this reason. We do not want to disable + * the warning, so we need to work around this via a macro. + */ +#if EAGAIN == EWOULDBLOCK + #define CHK_EAGAIN_EWOULDBLOCK (errno == EAGAIN) +#else + #define CHK_EAGAIN_EWOULDBLOCK (errno == EAGAIN | errno == EWOULDBLOCK) +#endif /* #if EAGAIN == EWOULDBOLOCK */ + +#define DFLT_wrkrMax 2 +#define DFLT_inlineDispatchThreshold 1 + +#define COMPRESS_NEVER 0 +#define COMPRESS_SINGLE_MSG 1 /* old, single-message compression */ +/* all other settings are for stream-compression */ +#define COMPRESS_STREAM_ALWAYS 2 + +/* config settings */ +typedef struct configSettings_s { + int bKeepAlive; /* support keep-alive packets */ + int iKeepAliveIntvl; + int iKeepAliveProbes; + int iKeepAliveTime; + int bEmitMsgOnClose; /* emit an informational message on close by remote peer */ + int bEmitMsgOnOpen; + int bSuppOctetFram; /* support octet-counted framing? */ + int iAddtlFrameDelim; /* addtl frame delimiter, e.g. for netscreen, default none */ + int maxFrameSize; + uchar *pszInputName; /* value for inputname property, NULL is OK and handled by core engine */ + uchar *lstnIP; /* which IP we should listen on? */ + uchar *pszBindRuleset; + int wrkrMax; /* max number of workers (actually "helper workers") */ + int iTCPSessMax; /* max open connections per instance */ +} configSettings_t; +static configSettings_t cs; + +struct instanceConf_s { + int bKeepAlive; /* support keep-alive packets */ + int iKeepAliveIntvl; + int iKeepAliveProbes; + int iKeepAliveTime; + int bEmitMsgOnClose; + int bEmitMsgOnOpen; + int bSuppOctetFram; /* support octet-counted framing? */ + int bSPFramingFix; + int iAddtlFrameDelim; + int socketBacklog; + sbool multiLine; + uint8_t compressionMode; + uchar *pszBindPort; /* port to bind to */ + uchar *pszLstnPortFileName; /* Name of the file with dynamic port used by testbench*/ + uchar *pszBindAddr; /* IP to bind socket to */ + uchar *pszBindPath; /* Path to bind socket to */ + uchar *pszBindRuleset; /* name of ruleset to bind to */ + uchar *pszInputName; /* value for inputname property, NULL is OK and handled by core engine */ + int fCreateMode; /* file creation mode for open() */ + uid_t fileUID; /* IDs for creation */ + gid_t fileGID; + int maxFrameSize; + int bFailOnPerms; /* fail creation if chown fails? */ + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + uchar *dfltTZ; + sbool bUnlink; + sbool discardTruncatedMsg; + sbool flowControl; + unsigned int ratelimitInterval; + unsigned int ratelimitBurst; + uchar *startRegex; + regex_t start_preg; /* compiled version of startRegex */ + int iTCPSessMax; /* max open connections */ + struct instanceConf_s *next; +}; + + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + instanceConf_t *root, *tail; + int wrkrMax; + int bProcessOnPoller; + int iTCPSessMax; + sbool configSetViaV2Method; +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */ + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "threads", eCmdHdlrPositiveInt, 0 }, + { "maxsessions", eCmdHdlrInt, 0 }, + { "processOnPoller", eCmdHdlrBinary, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "port", eCmdHdlrString, 0 }, /* legacy: InputTCPServerRun */ + { "address", eCmdHdlrString, 0 }, + { "path", eCmdHdlrString, 0 }, + { "unlink", eCmdHdlrBinary, 0 }, + { "discardtruncatedmsg", eCmdHdlrBinary, 0 }, + { "fileowner", eCmdHdlrUID, 0 }, + { "fileownernum", eCmdHdlrInt, 0 }, + { "filegroup", eCmdHdlrGID, 0 }, + { "filegroupnum", eCmdHdlrInt, 0 }, + { "filecreatemode", eCmdHdlrFileCreateMode, 0 }, + { "failonchownfailure", eCmdHdlrBinary, 0 }, + { "flowcontrol", eCmdHdlrBinary, 0 }, + { "name", eCmdHdlrString, 0 }, + { "maxframesize", eCmdHdlrInt, 0 }, + { "framing.delimiter.regex", eCmdHdlrString, 0 }, + { "ruleset", eCmdHdlrString, 0 }, + { "defaulttz", eCmdHdlrString, 0 }, + { "supportoctetcountedframing", eCmdHdlrBinary, 0 }, + { "framingfix.cisco.asa", eCmdHdlrBinary, 0 }, + { "maxsessions", eCmdHdlrInt, 0 }, + { "notifyonconnectionclose", eCmdHdlrBinary, 0 }, + { "notifyonconnectionopen", eCmdHdlrBinary, 0 }, + { "compression.mode", eCmdHdlrGetWord, 0 }, + { "keepalive", eCmdHdlrBinary, 0 }, + { "keepalive.probes", eCmdHdlrInt, 0 }, + { "keepalive.time", eCmdHdlrInt, 0 }, + { "keepalive.interval", eCmdHdlrInt, 0 }, + { "addtlframedelimiter", eCmdHdlrInt, 0 }, + { "ratelimit.interval", eCmdHdlrInt, 0 }, + { "ratelimit.burst", eCmdHdlrInt, 0 }, + { "multiline", eCmdHdlrBinary, 0 }, + { "listenportfilename", eCmdHdlrString, 0 }, + { "socketbacklog", eCmdHdlrInt, 0 } +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; + +#include "im-helper.h" /* must be included AFTER the type definitions! */ +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ + +/* data elements describing our running config */ +typedef struct ptcpsrv_s ptcpsrv_t; +typedef struct ptcplstn_s ptcplstn_t; +typedef struct ptcpsess_s ptcpsess_t; +typedef struct epolld_s epolld_t; + +/* the ptcp server (listener) object + * Note that the object contains support for forming a linked list + * of them. It does not make sense to do this seperately. + */ +struct ptcpsrv_s { + ptcpsrv_t *pNext; /* linked list maintenance */ + uchar *port; /* Port to listen to */ + uchar *lstnIP; /* which IP we should listen on? */ + uchar *path; /* Use a unix socket instead */ + int fCreateMode; /* file creation mode for open() */ + uid_t fileUID; /* IDs for creation */ + gid_t fileGID; + int maxFrameSize; + int bFailOnPerms; /* fail creation if chown fails? */ + sbool bUnixSocket; + int socketBacklog; + uchar *pszLstnPortFileName; + int iAddtlFrameDelim; + sbool multiLine; + int iKeepAliveIntvl; + int iKeepAliveProbes; + int iKeepAliveTime; + uint8_t compressionMode; + uchar *pszInputName; + uchar *dfltTZ; + prop_t *pInputName; /* InputName in (fast to process) property format */ + ruleset_t *pRuleset; + ptcplstn_t *pLstn; /* root of our listeners */ + ptcpsess_t *pSess; /* root of our sessions */ + int iTCPSessCnt; + int iTCPSessMax; + pthread_mutex_t mutSessLst; + sbool bKeepAlive; /* support keep-alive packets */ + sbool bEmitMsgOnClose; + sbool bEmitMsgOnOpen; + sbool bSuppOctetFram; + sbool bSPFramingFix; + sbool bUnlink; + sbool discardTruncatedMsg; + sbool flowControl; + ratelimit_t *ratelimiter; + instanceConf_t *inst; +}; + +/* the ptcp session object. Describes a single active session. + * includes support for doubly-linked list. + */ +struct ptcpsess_s { + ptcplstn_t *pLstn; /* our listener */ + ptcpsess_t *prev, *next; + int sock; + epolld_t *epd; + sbool bzInitDone; /* did we do an init of zstrm already? */ + z_stream zstrm; /* zip stream to use for tcp compression */ + uint8_t compressionMode; + int iMsg; /* index of next char to store in msg */ + int iCurrLine; /* 2nd char of current line in regex framing mode */ + int bAtStrtOfFram; /* are we at the very beginning of a new frame? */ + sbool bSuppOctetFram; /**< copy from listener, to speed up access */ + sbool bSPFramingFix; + enum { + eAtStrtFram, + eInOctetCnt, + eInMsg, + eInMsgTruncation + } inputState; /* our current state */ + int iOctetsRemain; /* Number of Octets remaining in message */ + TCPFRAMINGMODE eFraming; + uchar *pMsg; /* message (fragment) received */ + uchar *pMsg_save; /* message (fragment) save area in regex framing mode */ + prop_t *peerName; /* host name we received messages from */ + prop_t *peerIP; + const uchar *startRegex;/* cache for performance reasons */ + int iAddtlFrameDelim; /* cache for performance reasons */ +}; + + +/* the ptcp listener object. Describes a single active listener. + */ +struct ptcplstn_s { + ptcpsrv_t *pSrv; /* our server */ + ptcplstn_t *prev, *next; + int sock; + sbool bSuppOctetFram; + sbool bSPFramingFix; + epolld_t *epd; + statsobj_t *stats; /* listener stats */ + intctr_t rcvdBytes; + intctr_t rcvdDecompressed; + STATSCOUNTER_DEF(ctrSubmit, mutCtrSubmit) + STATSCOUNTER_DEF(ctrSessOpen, mutCtrSessOpen) + STATSCOUNTER_DEF(ctrSessOpenErr, mutCtrSessOpenErr) + STATSCOUNTER_DEF(ctrSessClose, mutCtrSessClose) + DEF_ATOMIC_HELPER_MUT64(mut_rcvdBytes) +}; + + +/* The following structure controls the worker threads. Global data is + * needed for their access. + */ +static struct wrkrInfo_s { + pthread_t tid; /* the worker's thread ID */ + long long unsigned numCalled; /* how often was this called */ + int wrkrIdx; /* index for this worker - shortcut for thread name */ +} *wrkrInfo; +static int wrkrRunning; + + +/* type of object stored in epoll descriptor */ +typedef enum { + epolld_lstn, + epolld_sess +} epolld_type_t; + +/* an epoll descriptor. contains all information necessary to process + * the result of epoll. + */ +struct epolld_s { + epolld_type_t typ; + void *ptr; + int sock; + struct epoll_event ev; +}; + +typedef struct io_req_s { + STAILQ_ENTRY(io_req_s) link; + epolld_t *epd; +} io_req_t; + +typedef struct io_q_s { + STAILQ_HEAD(ioq_s, io_req_s) q; + STATSCOUNTER_DEF(ctrEnq, mutCtrEnq); + int ctrMaxSz; //TODO: discuss potential problems around concurrent reads and writes + int sz; //current q size + statsobj_t *stats; + pthread_mutex_t mut; + pthread_cond_t wakeup_worker; +} io_q_t; + +/* global data */ +pthread_attr_t wrkrThrdAttr; /* Attribute for session threads; read only after startup */ +static ptcpsrv_t *pSrvRoot = NULL; +static int epollfd = -1; /* (sole) descriptor for epoll */ +static int iMaxLine; /* maximum size of a single message */ +static io_q_t io_q; + +/* forward definitions */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); +static rsRetVal addLstn(ptcpsrv_t *pSrv, int sock, int isIPv6); + + +/* function to suppress TSAN known-good case + * We do not use a mutex an epd, but we do always access it in + * pure sequence. Adding a mutex just to cover this "cosmetic" + * would result in uncesseary performance penalty. + */ +static void ATTR_NONNULL() +imptcp_destruct_epd(ptcpsess_t *const pSess) { + free(pSess->epd); + pSess->epd = NULL; +} + +/* some simple constructors/destructors */ +static void ATTR_NONNULL() +destructSess(ptcpsess_t *const pSess) +{ + imptcp_destruct_epd(pSess); + free(pSess->pMsg_save); + free(pSess->pMsg); + prop.Destruct(&pSess->peerName); + prop.Destruct(&pSess->peerIP); + /* TODO: make these inits compile-time switch depending: */ + pSess->pMsg = NULL; + free(pSess); +} + +/* remove session from server */ +static void +unlinkSess(ptcpsess_t *pSess) { + ptcpsrv_t *pSrv = pSess->pLstn->pSrv; + pthread_mutex_lock(&pSrv->mutSessLst); + pSrv->iTCPSessCnt--; + /* finally unlink session from structures */ + if(pSess->next != NULL) + pSess->next->prev = pSess->prev; + if(pSess->prev == NULL) { + /* need to update root! */ + pSrv->pSess = pSess->next; + } else { + pSess->prev->next = pSess->next; + } + pthread_mutex_unlock(&pSrv->mutSessLst); +} + +static void +destructSrv(ptcpsrv_t *pSrv) +{ + if(pSrv->ratelimiter != NULL) + ratelimitDestruct(pSrv->ratelimiter); + if(pSrv->pInputName != NULL) + prop.Destruct(&pSrv->pInputName); + pthread_mutex_destroy(&pSrv->mutSessLst); + free(pSrv->pszInputName); + free(pSrv->port); + free(pSrv->pszLstnPortFileName); + free(pSrv->path); + free(pSrv->lstnIP); + free(pSrv); +} + +/****************************************** TCP SUPPORT FUNCTIONS ***********************************/ +/* We may later think about moving this into a helper library again. But the whole point + * so far was to keep everything related close togehter. -- rgerhards, 2010-08-10 + */ + +static rsRetVal startupUXSrv(ptcpsrv_t *pSrv) { + DEFiRet; + int sock; + int sockflags; + struct sockaddr_un local; + + uchar *path = pSrv->path == NULL ? UCHAR_CONSTANT("") : pSrv->path; + DBGPRINTF("imptcp: creating listen unix socket at %s\n", path); + + sock = socket(AF_UNIX, SOCK_STREAM, 0); + if(sock < 0) { + LogError(errno, RS_RET_ERR_CRE_AFUX, "imptcp: error creating unix socket"); + ABORT_FINALIZE(RS_RET_ERR_CRE_AFUX); + } + + local.sun_family = AF_UNIX; + strncpy(local.sun_path, (char*) path, sizeof(local.sun_path)-1); + if (pSrv->bUnlink) { + unlink(local.sun_path); + } + + /* We use non-blocking IO! */ + if ((sockflags = fcntl(sock, F_GETFL)) != -1) { + sockflags |= O_NONBLOCK; + /* SETFL could fail too, so get it caught by the subsequent error check. */ + sockflags = fcntl(sock, F_SETFL, sockflags); + } + + if (sockflags == -1) { + LogError(errno, RS_RET_ERR_CRE_AFUX, "imptcp: error setting fcntl(O_NONBLOCK) on unix socket"); + ABORT_FINALIZE(RS_RET_ERR_CRE_AFUX); + } + + if (bind(sock, (struct sockaddr *)&local, SUN_LEN(&local)) < 0) { + LogError(errno, RS_RET_ERR_CRE_AFUX, "imptcp: error while binding unix socket"); + ABORT_FINALIZE(RS_RET_ERR_CRE_AFUX); + } + + if (listen(sock, pSrv->socketBacklog) < 0) { + LogError(errno, RS_RET_ERR_CRE_AFUX, "imptcp: unix socket listen error"); + ABORT_FINALIZE(RS_RET_ERR_CRE_AFUX); + } + + if(chown(local.sun_path, pSrv->fileUID, pSrv->fileGID) != 0) { + if(pSrv->bFailOnPerms) { + LogError(errno, RS_RET_ERR_CRE_AFUX, "imptcp: unix socket chown error"); + ABORT_FINALIZE(RS_RET_ERR_CRE_AFUX); + } + } + + if(chmod(local.sun_path, pSrv->fCreateMode) != 0) { + if(pSrv->bFailOnPerms) { + LogError(errno, RS_RET_ERR_CRE_AFUX, "imptcp: unix socket chmod error"); + ABORT_FINALIZE(RS_RET_ERR_CRE_AFUX); + } + } + + CHKiRet(addLstn(pSrv, sock, 0)); + +finalize_it: + if (iRet != RS_RET_OK) { + if (sock != -1) { + close(sock); + } + } + + RETiRet; +} + +/* Start up a server. That means all of its listeners are created. + * Does NOT yet accept/process any incoming data (but binds ports). Hint: this + * code is to be executed before dropping privileges. + */ +PRAGMA_DIAGNOSTIC_PUSH +static rsRetVal +startupSrv(ptcpsrv_t *pSrv) +{ + DEFiRet; + int error, maxs, on = 1; + int sock = -1; + int numSocks; + int sockflags; + struct addrinfo hints, *res = NULL, *r; + uchar *lstnIP; + int isIPv6 = 0; + int port_override = 0; /* if dyn port (0): use this for actually bound port */ + union { + struct sockaddr *sa; + struct sockaddr_in *ipv4; + struct sockaddr_in6 *ipv6; + } savecast; + + if (pSrv->bUnixSocket) { + return startupUXSrv(pSrv); + } + + lstnIP = pSrv->lstnIP == NULL ? UCHAR_CONSTANT("") : pSrv->lstnIP; + + DBGPRINTF("imptcp: creating listen socket on server '%s', port %s\n", lstnIP, pSrv->port); + + memset(&hints, 0, sizeof(hints)); + hints.ai_flags = AI_PASSIVE; + hints.ai_family = glbl.GetDefPFFamily(runModConf->pConf); + hints.ai_socktype = SOCK_STREAM; + + error = getaddrinfo((char*)pSrv->lstnIP, (char*) pSrv->port, &hints, &res); + if(error) { + DBGPRINTF("error %d querying server '%s', port '%s'\n", error, pSrv->lstnIP, pSrv->port); + ABORT_FINALIZE(RS_RET_INVALID_PORT); + } + + /* Count max number of sockets we may open */ + for(maxs = 0, r = res; r != NULL ; r = r->ai_next, maxs++) { + /* EMPTY */; + } + + numSocks = 0; /* num of sockets counter at start of array */ + for(r = res; r != NULL ; r = r->ai_next) { + if(port_override != 0) { + savecast.sa = (struct sockaddr*)r->ai_addr; + if(r->ai_family == AF_INET6) { + savecast.ipv6->sin6_port = port_override; + } else { + savecast.ipv4->sin_port = port_override; + } + } + sock = socket(r->ai_family, r->ai_socktype, r->ai_protocol); + if(sock < 0) { + if(!(r->ai_family == PF_INET6 && errno == EAFNOSUPPORT)) { + DBGPRINTF("error %d creating tcp listen socket", errno); + /* it is debatable if PF_INET with EAFNOSUPPORT should + * also be ignored... + */ + } + continue; + } + + if(r->ai_family == AF_INET6) { + isIPv6 = 1; +#ifdef IPV6_V6ONLY + int iOn = 1; + if(setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&iOn, sizeof (iOn)) < 0) { + close(sock); + sock = -1; + continue; + } +#endif + } else { + isIPv6 = 0; + } + + if(setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *) &on, sizeof(on)) < 0 ) { + DBGPRINTF("error %d setting tcp socket option\n", errno); + close(sock); + sock = -1; + continue; + } + + /* We use non-blocking IO! */ + if((sockflags = fcntl(sock, F_GETFL)) != -1) { + sockflags |= O_NONBLOCK; + /* SETFL could fail too, so get it caught by the subsequent + * error check. + */ + sockflags = fcntl(sock, F_SETFL, sockflags); + } + if(sockflags == -1) { + DBGPRINTF("error %d setting fcntl(O_NONBLOCK) on tcp socket", errno); + close(sock); + sock = -1; + continue; + } + + + + /* We need to enable BSD compatibility. Otherwise an attacker + * could flood our log files by sending us tons of ICMP errors. + */ +#if !defined (_AIX) +#ifndef BSD + if(net.should_use_so_bsdcompat()) { + if (setsockopt(sock, SOL_SOCKET, SO_BSDCOMPAT, + (char *) &on, sizeof(on)) < 0) { + LogError(errno, NO_ERRCODE, "TCP setsockopt(BSDCOMPAT)"); + close(sock); + sock = -1; + continue; + } + } +#endif +#endif + if( (bind(sock, r->ai_addr, r->ai_addrlen) < 0) +#ifndef IPV6_V6ONLY + && (errno != EADDRINUSE) +#endif + ) { + /* TODO: check if *we* bound the socket - else we *have* an error! */ + LogError(errno, NO_ERRCODE, "Error while binding tcp socket"); + close(sock); + sock = -1; + continue; + } + + /* if we bind to dynamic port (port 0 given), we will do so consistently. Thus + * once we got a dynamic port, we will keep it and use it for other protocols + * as well. As of my understanding, this should always work as the OS does not + * pick a port that is used by some protocol (well, at least this looks very + * unlikely...). If our asusmption is wrong, we should iterate until we find a + * combination that works - it is very unusual to have the same service listen + * on differnt ports on IPv4 and IPv6. + */ + savecast.sa = (struct sockaddr*)r->ai_addr; + const int currport = (isIPv6) ? savecast.ipv6->sin6_port : savecast.ipv4->sin_port; + if(currport == 0) { + socklen_t socklen_r = r->ai_addrlen; + if(getsockname(sock, r->ai_addr, &socklen_r) == -1) { + LogError(errno, NO_ERRCODE, "nsd_ptcp: ListenPortFileName: getsockname:" + "error while trying to get socket"); + } + r->ai_addrlen = socklen_r; + savecast.sa = (struct sockaddr*)r->ai_addr; + port_override = (isIPv6) ? savecast.ipv6->sin6_port : savecast.ipv4->sin_port; + if(pSrv->pszLstnPortFileName != NULL) { + FILE *fp; + if((fp = fopen((const char*)pSrv->pszLstnPortFileName, "w+")) == NULL) { + LogError(errno, RS_RET_IO_ERROR, "imptcp: ListenPortFileName: " + "error while trying to open file"); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + if(isIPv6) { + fprintf(fp, "%d", ntohs(savecast.ipv6->sin6_port)); + } else { + fprintf(fp, "%d", ntohs(savecast.ipv4->sin_port)); + } + fclose(fp); + } + } + + if(listen(sock, pSrv->socketBacklog) < 0) { + LogError(errno, NO_ERRCODE, "imptcp error listening on port"); + DBGPRINTF("tcp listen error %d, suspending\n", errno); + close(sock); + sock = -1; + continue; + } + + /* if we reach this point, we were able to obtain a valid socket, so we can + * create our listener object. -- rgerhards, 2010-08-10 + */ + CHKiRet(addLstn(pSrv, sock, isIPv6)); + ++numSocks; + } + + if(numSocks != maxs) { + DBGPRINTF("We could initialize %d TCP listen sockets out of %d we received " + "- this may or may not be an error indication.\n", numSocks, maxs); + } + + if(numSocks == 0) { + DBGPRINTF("No TCP listen sockets could successfully be initialized"); + ABORT_FINALIZE(RS_RET_COULD_NOT_BIND); + } + +finalize_it: + if(res != NULL) { + freeaddrinfo(res); + } + + if(iRet != RS_RET_OK) { + if(sock != -1) { + close(sock); + } + } + + RETiRet; +} +PRAGMA_DIAGNOSTIC_POP + +/* Set pRemHost based on the address provided. This is to be called upon accept()ing + * a connection request. It must be provided by the socket we received the + * message on as well as a NI_MAXHOST size large character buffer for the FQDN. + * Please see http://www.hmug.org/man/3/getnameinfo.php (under Caveats) + * for some explanation of the code found below. If we detect a malicious + * hostname, we return RS_RET_MALICIOUS_HNAME and let the caller decide + * on how to deal with that. + * rgerhards, 2008-03-31 + */ +static rsRetVal +getPeerNames(prop_t **peerName, prop_t **peerIP, struct sockaddr *pAddr, sbool bUXServer) +{ + int error; + uchar szIP[NI_MAXHOST+1] = ""; + uchar szHname[NI_MAXHOST+1] = ""; + struct addrinfo hints, *res; + sbool bMaliciousHName = 0; + + DEFiRet; + + *peerName = NULL; + *peerIP = NULL; + + if (bUXServer) { + strncpy((char *) szHname, (char *) glbl.GetLocalHostName(), NI_MAXHOST); + strncpy((char *) szIP, (char *) glbl.GetLocalHostIP(), NI_MAXHOST); + szHname[NI_MAXHOST] = '\0'; + szIP[NI_MAXHOST] = '\0'; + } else { + error = getnameinfo(pAddr, SALEN(pAddr), (char *) szIP, sizeof(szIP), NULL, 0, NI_NUMERICHOST); + if (error) { + DBGPRINTF("Malformed from address %s\n", gai_strerror(error)); + strcpy((char *) szHname, "???"); + strcpy((char *) szIP, "???"); + ABORT_FINALIZE(RS_RET_INVALID_HNAME); + } + + if (!glbl.GetDisableDNS(runConf)) { + error = getnameinfo(pAddr, SALEN(pAddr), (char *) szHname, NI_MAXHOST, NULL, 0, NI_NAMEREQD); + if (error == 0) { + memset(&hints, 0, sizeof(struct addrinfo)); + hints.ai_flags = AI_NUMERICHOST; + hints.ai_socktype = SOCK_STREAM; + /* we now do a lookup once again. This one should fail, + * because we should not have obtained a non-numeric address. If + * we got a numeric one, someone messed with DNS! + */ + if (getaddrinfo((char *) szHname, NULL, &hints, &res) == 0) { + freeaddrinfo(res); + /* OK, we know we have evil, so let's indicate this to our caller */ + snprintf((char *) szHname, sizeof(szHname), "[MALICIOUS:IP=%s]", szIP); + DBGPRINTF("Malicious PTR record, IP = \"%s\" HOST = \"%s\"", szIP, szHname); + bMaliciousHName = 1; + } + } else { + strcpy((char *) szHname, (char *) szIP); + } + } else { + strcpy((char *) szHname, (char *) szIP); + } + } + + /* We now have the names, so now let's allocate memory and store them permanently. */ + CHKiRet(prop.Construct(peerName)); + CHKiRet(prop.SetString(*peerName, szHname, ustrlen(szHname))); + CHKiRet(prop.ConstructFinalize(*peerName)); + CHKiRet(prop.Construct(peerIP)); + CHKiRet(prop.SetString(*peerIP, szIP, ustrlen(szIP))); + CHKiRet(prop.ConstructFinalize(*peerIP)); + +finalize_it: + if(iRet != RS_RET_OK) { + if(*peerName != NULL) + prop.Destruct(peerName); + if(*peerIP != NULL) + prop.Destruct(peerIP); + } + if(bMaliciousHName) + iRet = RS_RET_MALICIOUS_HNAME; + RETiRet; +} + + +/* Enable KEEPALIVE handling on the socket. */ +static rsRetVal +EnableKeepAlive(ptcplstn_t *pLstn, int sock) +{ + int ret; + int optval; + socklen_t optlen; + DEFiRet; + + optval = 1; + optlen = sizeof(optval); + ret = setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &optval, optlen); + if(ret < 0) { + dbgprintf("EnableKeepAlive socket call returns error %d\n", ret); + ABORT_FINALIZE(RS_RET_ERR); + } + +# if defined(TCP_KEEPCNT) + if(pLstn->pSrv->iKeepAliveProbes > 0) { + optval = pLstn->pSrv->iKeepAliveProbes; + optlen = sizeof(optval); + ret = setsockopt(sock, IPPROTO_TCP, TCP_KEEPCNT, &optval, optlen); + } else { + ret = 0; + } +# else + ret = -1; +# endif + if(ret < 0) { + LogError(ret, NO_ERRCODE, "imptcp cannot set keepalive probes - ignored"); + } + +# if defined(TCP_KEEPCNT) + if(pLstn->pSrv->iKeepAliveTime > 0) { + optval = pLstn->pSrv->iKeepAliveTime; + optlen = sizeof(optval); + ret = setsockopt(sock, IPPROTO_TCP, TCP_KEEPIDLE, &optval, optlen); + } else { + ret = 0; + } +# else + ret = -1; +# endif + if(ret < 0) { + LogError(ret, NO_ERRCODE, "imptcp cannot set keepalive time - ignored"); + } + +# if defined(TCP_KEEPCNT) + if(pLstn->pSrv->iKeepAliveIntvl > 0) { + optval = pLstn->pSrv->iKeepAliveIntvl; + optlen = sizeof(optval); + ret = setsockopt(sock, IPPROTO_TCP, TCP_KEEPINTVL, &optval, optlen); + } else { + ret = 0; + } +# else + ret = -1; +# endif + if(ret < 0) { + LogError(errno, NO_ERRCODE, "imptcp cannot set keepalive intvl - ignored"); + } + + dbgprintf("KEEPALIVE enabled for socket %d\n", sock); + +finalize_it: + RETiRet; +} + + +/* accept an incoming connection request + * rgerhards, 2008-04-22 + */ +static rsRetVal ATTR_NONNULL() +AcceptConnReq(ptcplstn_t *const pLstn, int *const newSock, prop_t **peerName, prop_t **peerIP) +{ + int sockflags; + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + int iNewSock = -1; + + DEFiRet; + + *peerName = NULL; /* ensure we know if we don't have one! */ + iNewSock = accept(pLstn->sock, (struct sockaddr*) &addr, &addrlen); + if(iNewSock < 0) { + if(CHK_EAGAIN_EWOULDBLOCK || errno == EMFILE) + ABORT_FINALIZE(RS_RET_NO_MORE_DATA); + LogError(errno, RS_RET_ACCEPT_ERR, "error accepting connection " + "on listen socket %d", pLstn->sock); + ABORT_FINALIZE(RS_RET_ACCEPT_ERR); + } + if(addrlen == 0) { + LogError(errno, RS_RET_ACCEPT_ERR, "AcceptConnReq could not obtain " + "remote peer identification on listen socket %d", pLstn->sock); + } + + if(pLstn->pSrv->bKeepAlive) + EnableKeepAlive(pLstn, iNewSock);/* we ignore errors, best to do! */ + + CHKiRet(getPeerNames(peerName, peerIP, (struct sockaddr *) &addr, pLstn->pSrv->bUnixSocket)); + + /* set the new socket to non-blocking IO */ + if((sockflags = fcntl(iNewSock, F_GETFL)) != -1) { + sockflags |= O_NONBLOCK; + /* SETFL could fail too, so get it caught by the subsequent + * error check. + */ + sockflags = fcntl(iNewSock, F_SETFL, sockflags); + } + + if(sockflags == -1) { + LogError(errno, RS_RET_IO_ERROR, "error setting fcntl(O_NONBLOCK) on " + "tcp socket %d", iNewSock); + prop.Destruct(peerName); + prop.Destruct(peerIP); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + if(pLstn->pSrv->bEmitMsgOnOpen) { + LogMsg(0, RS_RET_NO_ERRCODE, LOG_INFO, + "imptcp: connection established with host: %s", + propGetSzStr(*peerName)); + } + + STATSCOUNTER_INC(pLstn->ctrSessOpen, pLstn->mutCtrSessOpen); + *newSock = iNewSock; + +finalize_it: + DBGPRINTF("iRet: %d\n", iRet); + if(iRet != RS_RET_OK) { + if(iRet != RS_RET_NO_MORE_DATA && pLstn->pSrv->bEmitMsgOnOpen) { + LogError(0, NO_ERRCODE, "imptcp: connection could not be " + "established with host: %s", + *peerName == NULL ? "(could not query)" + : (const char*)propGetSzStr(*peerName)); + } + STATSCOUNTER_INC(pLstn->ctrSessOpenErr, pLstn->mutCtrSessOpenErr); + /* the close may be redundant, but that doesn't hurt... */ + if(iNewSock != -1) + close(iNewSock); + } + + RETiRet; +} + + +/* This is a helper for submitting the message to the rsyslog core. + * It does some common processing, including resetting the various + * state variables to a "processed" state. + * Note that this function is also called if we had a buffer overflow + * due to a too-long message. So far, there is no indication this + * happened and it may be worth thinking about different handling + * of this case (what obviously would require a change to this + * function or some related code). + * rgerhards, 2009-04-23 + * EXTRACT from tcps_sess.c + */ +static rsRetVal +doSubmitMsg(ptcpsess_t *pThis, struct syslogTime *stTime, time_t ttGenTime, multi_submit_t *pMultiSub) +{ + smsg_t *pMsg; + ptcpsrv_t *pSrv; + DEFiRet; + + if(pThis->iMsg == 0) { + DBGPRINTF("discarding zero-sized message\n"); + FINALIZE; + } + pSrv = pThis->pLstn->pSrv; + + /* we now create our own message object and submit it to the queue */ + CHKiRet(msgConstructWithTime(&pMsg, stTime, ttGenTime)); + MsgSetRawMsg(pMsg, (char*)pThis->pMsg, pThis->iMsg); + MsgSetInputName(pMsg, pSrv->pInputName); + MsgSetFlowControlType(pMsg, eFLOWCTL_LIGHT_DELAY); + if(pSrv->dfltTZ != NULL) + MsgSetDfltTZ(pMsg, (char*) pSrv->dfltTZ); + MsgSetFlowControlType(pMsg, pSrv->flowControl + ? eFLOWCTL_LIGHT_DELAY : eFLOWCTL_NO_DELAY); + pMsg->msgFlags = NEEDS_PARSING | PARSE_HOSTNAME; + MsgSetRcvFrom(pMsg, pThis->peerName); + CHKiRet(MsgSetRcvFromIP(pMsg, pThis->peerIP)); + MsgSetRuleset(pMsg, pSrv->pRuleset); + STATSCOUNTER_INC(pThis->pLstn->ctrSubmit, pThis->pLstn->mutCtrSubmit); + + ratelimitAddMsg(pSrv->ratelimiter, pMultiSub, pMsg); + +finalize_it: + /* reset status variables */ + pThis->bAtStrtOfFram = 1; + pThis->iMsg = 0; + + RETiRet; +} + + +/* process the data received, special case if the framing is specified via + * a regex. For more info see processDataRcvd(). + */ +static rsRetVal ATTR_NONNULL() +processDataRcvd_regexFraming(ptcpsess_t *const __restrict__ pThis, + char **const buff, + struct syslogTime *const stTime, + const time_t ttGenTime, + multi_submit_t *const pMultiSub, + unsigned *const __restrict__ pnMsgs) +{ + DEFiRet; + const instanceConf_t *const inst = pThis->pLstn->pSrv->inst; + assert(inst->startRegex != NULL); + const char c = **buff; + + pThis->pMsg[pThis->iMsg++] = c; + pThis->pMsg[pThis->iMsg] = '\0'; + + if(pThis->iMsg == 2*iMaxLine) { + LogError(0, RS_RET_OVERSIZE_MSG, "imptcp: more then double max message size (%d) " + "received without finding frame terminator via regex - assuming " + "end of frame now.", pThis->iMsg+1); + doSubmitMsg(pThis, stTime, ttGenTime, pMultiSub); + ++(*pnMsgs); + pThis->iMsg = 0; + pThis->iCurrLine = 1; + } + + + if(c == '\n') { + pThis->iCurrLine = pThis->iMsg; + } else { + const int isMatch = !regexec(&inst->start_preg, (char*)pThis->pMsg+pThis->iCurrLine, 0, NULL, 0); + if(isMatch) { + DBGPRINTF("regex match (%d), framing line: %s\n", pThis->iCurrLine, pThis->pMsg); + strcpy((char*)pThis->pMsg_save, (char*) pThis->pMsg+pThis->iCurrLine); + pThis->iMsg = pThis->iCurrLine - 1; + + doSubmitMsg(pThis, stTime, ttGenTime, pMultiSub); + ++(*pnMsgs); + + strcpy((char*)pThis->pMsg, (char*)pThis->pMsg_save); + pThis->iMsg = ustrlen(pThis->pMsg_save); + pThis->iCurrLine = 1; + } + } + + RETiRet; +} + + +/* process the data received. As TCP is stream based, we need to process the + * data inside a state machine. The actual data received is passed in byte-by-byte + * from DataRcvd, and this function here compiles messages from them and submits + * the end result to the queue. Introducing this function fixes a long-term bug ;) + * rgerhards, 2008-03-14 + * EXTRACT from tcps_sess.c + */ +static rsRetVal ATTR_NONNULL(1, 2) +processDataRcvd(ptcpsess_t *const __restrict__ pThis, + char **buff, + const int buffLen, + struct syslogTime *stTime, + const time_t ttGenTime, + multi_submit_t *pMultiSub, + unsigned *const __restrict__ pnMsgs) +{ + DEFiRet; + const char c = **buff; + int octetsToCopy, octetsToDiscard; + + if(pThis->startRegex != NULL) { + processDataRcvd_regexFraming(pThis, buff, stTime, ttGenTime, pMultiSub, pnMsgs); + FINALIZE; + } + + if(pThis->inputState == eAtStrtFram) { + if(pThis->bSuppOctetFram && isdigit((int) c)) { + pThis->inputState = eInOctetCnt; + pThis->iOctetsRemain = 0; + pThis->eFraming = TCP_FRAMING_OCTET_COUNTING; + } else if(pThis->bSPFramingFix && c == ' ') { + /* Cisco very occasionally sends a SP after a LF, which + * thrashes framing if not taken special care of. Here, + * we permit space *in front of the next frame* and + * ignore it. + */ + FINALIZE; + } else { + pThis->inputState = eInMsg; + pThis->eFraming = TCP_FRAMING_OCTET_STUFFING; + } + } + + if(pThis->inputState == eInOctetCnt) { + uchar *propPeerName = NULL; + int lenPeerName = 0; + uchar *propPeerIP = NULL; + int lenPeerIP = 0; + if(isdigit(c)) { + if(pThis->iOctetsRemain <= 200000000) { + pThis->iOctetsRemain = pThis->iOctetsRemain * 10 + c - '0'; + } + if(pThis->iMsg < iMaxLine) { + *(pThis->pMsg + pThis->iMsg++) = c; + } + } else { /* done with the octet count, so this must be the SP terminator */ + DBGPRINTF("TCP Message with octet-counter, size %d.\n", pThis->iOctetsRemain); + prop.GetString(pThis->peerName, &propPeerName, &lenPeerName); + prop.GetString(pThis->peerIP, &propPeerIP, &lenPeerIP); + if(c != ' ') { + LogError(0, NO_ERRCODE, "Framing Error in received TCP message " + "from peer: (hostname) %s, (ip) %s: delimiter is not " + "SP but has ASCII value %d.", propPeerName, propPeerIP, c); + } + if(pThis->iOctetsRemain < 1) { + /* TODO: handle the case where the octet count is 0! */ + LogError(0, NO_ERRCODE, "Framing Error in received TCP message" + " from peer: (hostname) %s, (ip) %s: invalid octet count %d.", + propPeerName, propPeerIP, pThis->iOctetsRemain); + pThis->eFraming = TCP_FRAMING_OCTET_STUFFING; + } else if(pThis->iOctetsRemain > iMaxLine) { + /* while we can not do anything against it, we can at least log an indication + * that something went wrong) -- rgerhards, 2008-03-14 + */ + DBGPRINTF("truncating message with %d octets - max msg size is %d\n", + pThis->iOctetsRemain, iMaxLine); + LogError(0, NO_ERRCODE, "received oversize message from peer: " + "(hostname) %s, (ip) %s: size is %d bytes, max msg " + "size is %d, truncating...", propPeerName, propPeerIP, + pThis->iOctetsRemain, iMaxLine); + } + if(pThis->iOctetsRemain > pThis->pLstn->pSrv->maxFrameSize) { + LogError(0, NO_ERRCODE, "Framing Error in received TCP message " + "from peer: (hostname) %s, (ip) %s: frame too large: %d, " + "change to octet stuffing", propPeerName, propPeerIP, + pThis->iOctetsRemain); + pThis->eFraming = TCP_FRAMING_OCTET_STUFFING; + } else { + pThis->iMsg = 0; + } + pThis->inputState = eInMsg; + } + } else if(pThis->inputState == eInMsgTruncation) { + if ((c == '\n') + || ((pThis->iAddtlFrameDelim != TCPSRV_NO_ADDTL_DELIMITER) + && (c == pThis->iAddtlFrameDelim))) { + pThis->inputState = eAtStrtFram; + } + } else { + assert(pThis->inputState == eInMsg); + if (pThis->eFraming == TCP_FRAMING_OCTET_STUFFING) { + int iMsg = pThis->iMsg; /* cache value for faster access */ + if(iMsg >= iMaxLine) { + /* emergency, we now need to flush, no matter if we are at end of message or not... */ + int i = 1; + char currBuffChar; + while(i < buffLen && ((currBuffChar = (*buff)[i]) != '\n' + && (pThis->iAddtlFrameDelim == TCPSRV_NO_ADDTL_DELIMITER + || currBuffChar != pThis->iAddtlFrameDelim))) { + i++; + } + LogError(0, NO_ERRCODE, "imptcp %s: message received is at least %d byte larger than " + "max msg size; message will be split starting at: \"%.*s\"\n", + pThis->pLstn->pSrv->pszInputName, i, (i < 32) ? i : 32, *buff); + doSubmitMsg(pThis, stTime, ttGenTime, pMultiSub); + iMsg = 0; + ++(*pnMsgs); + if(pThis->pLstn->pSrv->discardTruncatedMsg == 1) { + pThis->inputState = eInMsgTruncation; + } + /* we might think if it is better to ignore the rest of the + * message than to treat it as a new one. Maybe this is a good + * candidate for a configuration parameter... + * rgerhards, 2006-12-04 + */ + } + if ((c == '\n') + || ((pThis->iAddtlFrameDelim != TCPSRV_NO_ADDTL_DELIMITER) + && (c == pThis->iAddtlFrameDelim)) + ) { /* record delimiter? */ + if(pThis->pLstn->pSrv->multiLine) { + if((buffLen == 1) || ((*buff)[1] == '<')) { + doSubmitMsg(pThis, stTime, ttGenTime, pMultiSub); + iMsg = 0; /* Reset cached value! */ + ++(*pnMsgs); + pThis->inputState = eAtStrtFram; + } else { + if(iMsg < iMaxLine) { + pThis->pMsg[iMsg++] = c; + } + } + } else { + doSubmitMsg(pThis, stTime, ttGenTime, pMultiSub); + iMsg = 0; /* Reset cached value! */ + ++(*pnMsgs); + pThis->inputState = eAtStrtFram; + } + } else { + /* IMPORTANT: here we copy the actual frame content to the message - for BOTH + * framing modes! If we have a message that is larger than the max msg size, + * we truncate it. This is the best we can do in light of what the engine supports. + * -- rgerhards, 2008-03-14 + */ + if(likely(iMsg < iMaxLine)) { + pThis->pMsg[iMsg++] = c; + } + } + pThis->iMsg = iMsg; /* update "real value" with cached one */ + } else { + assert(pThis->eFraming == TCP_FRAMING_OCTET_COUNTING); + octetsToCopy = pThis->iOctetsRemain; + octetsToDiscard = 0; + if (buffLen < octetsToCopy) { + octetsToCopy = buffLen; + } + if (octetsToCopy + pThis->iMsg > iMaxLine) { + octetsToDiscard = octetsToCopy - (iMaxLine - pThis->iMsg); + octetsToCopy = iMaxLine - pThis->iMsg; + } + + memcpy(pThis->pMsg + pThis->iMsg, *buff, octetsToCopy); + pThis->iMsg += octetsToCopy; + pThis->iOctetsRemain -= (octetsToCopy + octetsToDiscard); + *buff += (octetsToCopy + octetsToDiscard - 1); + if (pThis->iOctetsRemain == 0) { + /* we have end of frame! */ + doSubmitMsg(pThis, stTime, ttGenTime, pMultiSub); + ++(*pnMsgs); + pThis->inputState = eAtStrtFram; + } + } + + } + +finalize_it: + RETiRet; +} + + +/* Processes the data received via a TCP session. If there + * is no other way to handle it, data is discarded. + * Input parameter data is the data received, iLen is its + * len as returned from recv(). iLen must be 1 or more (that + * is errors must be handled by caller!). iTCPSess must be + * the index of the TCP session that received the data. + * rgerhards 2005-07-04 + * And another change while generalizing. We now return either + * RS_RET_OK, which means the session should be kept open + * or anything else, which means it must be closed. + * rgerhards, 2008-03-01 + * As a performance optimization, we pick up the timestamp here. Acutally, + * this *is* the *correct* reception step for all the data we received, because + * we have just received a bunch of data! -- rgerhards, 2009-06-16 + * EXTRACT from tcps_sess.c + */ +static rsRetVal ATTR_NONNULL(1, 2) +DataRcvdUncompressed(ptcpsess_t *pThis, char *pData, const size_t iLen, struct syslogTime *stTime, time_t ttGenTime) +{ + multi_submit_t multiSub; + smsg_t *pMsgs[CONF_NUM_MULTISUB]; + char *pEnd; + unsigned nMsgs = 0; + DEFiRet; + + assert(iLen > 0); + + if(ttGenTime == 0) + datetime.getCurrTime(stTime, &ttGenTime, TIME_IN_LOCALTIME); + multiSub.ppMsgs = pMsgs; + multiSub.maxElem = CONF_NUM_MULTISUB; + multiSub.nElem = 0; + + /* We now copy the message to the session buffer. */ + pEnd = pData + iLen; /* this is one off, which is intensional */ + + while(pData < pEnd) { + CHKiRet(processDataRcvd(pThis, &pData, pEnd - pData, stTime, ttGenTime, &multiSub, &nMsgs)); + pData++; + } + + iRet = multiSubmitFlush(&multiSub); + + if(runConf->globals.senderKeepTrack) + statsRecordSender(propGetSzStr(pThis->peerName), nMsgs, ttGenTime); + +finalize_it: + RETiRet; +} + +static rsRetVal +DataRcvdCompressed(ptcpsess_t *pThis, char *buf, size_t len) +{ + struct syslogTime stTime; + time_t ttGenTime; + int zRet; /* zlib return state */ + unsigned outavail; + uchar zipBuf[64*1024]; // TODO: alloc on heap, and much larger (512KiB? batch size!) + DEFiRet; + // TODO: can we do stats counters? Even if they are not 100% correct under all cases, + // by simply updating the input and output sizes? + uint64_t outtotal; + + datetime.getCurrTime(&stTime, &ttGenTime, TIME_IN_LOCALTIME); + outtotal = 0; + + if(!pThis->bzInitDone) { + /* allocate deflate state */ + pThis->zstrm.zalloc = Z_NULL; + pThis->zstrm.zfree = Z_NULL; + pThis->zstrm.opaque = Z_NULL; + zRet = inflateInit(&pThis->zstrm); + if(zRet != Z_OK) { + DBGPRINTF("imptcp: error %d returned from zlib/inflateInit()\n", zRet); + ABORT_FINALIZE(RS_RET_ZLIB_ERR); + } + pThis->bzInitDone = RSTRUE; + } + + pThis->zstrm.next_in = (Bytef*) buf; + pThis->zstrm.avail_in = len; + /* run inflate() on buffer until everything has been uncompressed */ + do { + DBGPRINTF("imptcp: in inflate() loop, avail_in %d, total_in %ld\n", + pThis->zstrm.avail_in, pThis->zstrm.total_in); + pThis->zstrm.avail_out = sizeof(zipBuf); + pThis->zstrm.next_out = zipBuf; + zRet = inflate(&pThis->zstrm, Z_SYNC_FLUSH); /* no bad return value */ + //zRet = inflate(&pThis->zstrm, Z_NO_FLUSH); /* no bad return value */ + DBGPRINTF("after inflate, ret %d, avail_out %d\n", zRet, pThis->zstrm.avail_out); + outavail = sizeof(zipBuf) - pThis->zstrm.avail_out; + if(outavail != 0) { + outtotal += outavail; + pThis->pLstn->rcvdDecompressed += outavail; + CHKiRet(DataRcvdUncompressed(pThis, (char*)zipBuf, outavail, &stTime, ttGenTime)); + } + } while (pThis->zstrm.avail_out == 0); + + dbgprintf("end of DataRcvCompress, sizes: in %lld, out %llu\n", (long long) len, + (long long unsigned) outtotal); +finalize_it: + RETiRet; +} + +static rsRetVal +DataRcvd(ptcpsess_t *pThis, char *pData, size_t iLen) +{ + struct syslogTime stTime; + DEFiRet; + ATOMIC_ADD_uint64(&pThis->pLstn->rcvdBytes, &pThis->pLstn->mut_rcvdBytes, iLen); + if(pThis->compressionMode >= COMPRESS_STREAM_ALWAYS) + iRet = DataRcvdCompressed(pThis, pData, iLen); + else + iRet = DataRcvdUncompressed(pThis, pData, iLen, &stTime, 0); + RETiRet; +} + + +/****************************************** --END-- TCP SUPPORT FUNCTIONS ***********************************/ + + +static void +initConfigSettings(void) +{ + cs.bEmitMsgOnClose = 0; + cs.bEmitMsgOnOpen = 0; + cs.wrkrMax = DFLT_wrkrMax; + cs.bSuppOctetFram = 1; + cs.iAddtlFrameDelim = TCPSRV_NO_ADDTL_DELIMITER; + cs.maxFrameSize = 200000; + cs.pszInputName = NULL; + cs.pszBindRuleset = NULL; + cs.pszInputName = NULL; + cs.lstnIP = NULL; +} + + +/* add socket to the epoll set + */ +static rsRetVal +addEPollSock(epolld_type_t typ, void *ptr, int sock, epolld_t **pEpd) +{ + DEFiRet; + epolld_t *epd = NULL; + + CHKmalloc(epd = calloc(1, sizeof(epolld_t))); + epd->typ = typ; + epd->ptr = ptr; + epd->sock = sock; + *pEpd = epd; + epd->ev.events = EPOLLIN|EPOLLONESHOT; + epd->ev.data.ptr = (void*) epd; + + if(epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &(epd->ev)) != 0) { + LogError(errno, RS_RET_EPOLL_CTL_FAILED, "os error during epoll ADD"); + ABORT_FINALIZE(RS_RET_EPOLL_CTL_FAILED); + } + + DBGPRINTF("imptcp: added socket %d to epoll[%d] set\n", sock, epollfd); + +finalize_it: + if(iRet != RS_RET_OK) { + if (epd != NULL) { + LogError(0, RS_RET_INTERNAL_ERROR, "error: could not initialize mutex for ptcp " + "connection for socket: %d", sock); + } + free(epd); + } + RETiRet; +} + + +/* add a listener to the server + */ +static rsRetVal +addLstn(ptcpsrv_t *pSrv, int sock, int isIPv6) +{ + DEFiRet; + ptcplstn_t *pLstn = NULL; + uchar statname[64]; + + CHKmalloc(pLstn = calloc(1, sizeof(ptcplstn_t))); + pLstn->pSrv = pSrv; + pLstn->bSuppOctetFram = pSrv->bSuppOctetFram; + pLstn->bSPFramingFix = pSrv->bSPFramingFix; + pLstn->sock = sock; + /* support statistics gathering */ + uchar *inputname; + if(pSrv->pszInputName == NULL) { + inputname = (uchar*)"imptcp"; + } else { + inputname = pSrv->pszInputName; + } + CHKiRet(statsobj.Construct(&(pLstn->stats))); + snprintf((char*)statname, sizeof(statname), "%s(%s/%s/%s)", inputname, + (pSrv->lstnIP == NULL) ? "*" : (char*)pSrv->lstnIP, pSrv->port, + isIPv6 ? "IPv6" : "IPv4"); + statname[sizeof(statname)-1] = '\0'; /* just to be on the save side... */ + CHKiRet(statsobj.SetName(pLstn->stats, statname)); + CHKiRet(statsobj.SetOrigin(pLstn->stats, (uchar*)"imptcp")); + STATSCOUNTER_INIT(pLstn->ctrSubmit, pLstn->mutCtrSubmit); + CHKiRet(statsobj.AddCounter(pLstn->stats, UCHAR_CONSTANT("submitted"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pLstn->ctrSubmit))); + STATSCOUNTER_INIT(pLstn->ctrSessOpen, pLstn->mutCtrSessOpen); + CHKiRet(statsobj.AddCounter(pLstn->stats, UCHAR_CONSTANT("sessions.opened"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pLstn->ctrSessOpen))); + STATSCOUNTER_INIT(pLstn->ctrSessOpenErr, pLstn->mutCtrSessOpenErr); + CHKiRet(statsobj.AddCounter(pLstn->stats, UCHAR_CONSTANT("sessions.openfailed"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pLstn->ctrSessOpenErr))); + STATSCOUNTER_INIT(pLstn->ctrSessClose, pLstn->mutCtrSessClose); + CHKiRet(statsobj.AddCounter(pLstn->stats, UCHAR_CONSTANT("sessions.closed"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pLstn->ctrSessClose))); + /* the following counters are not protected by mutexes; we accept + * that they may not be 100% correct */ + pLstn->rcvdBytes = 0, + pLstn->rcvdDecompressed = 0; + INIT_ATOMIC_HELPER_MUT64(pLstn->mut_rcvdBytes); + CHKiRet(statsobj.AddCounter(pLstn->stats, UCHAR_CONSTANT("bytes.received"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pLstn->rcvdBytes))); + CHKiRet(statsobj.AddCounter(pLstn->stats, UCHAR_CONSTANT("bytes.decompressed"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pLstn->rcvdDecompressed))); + CHKiRet(statsobj.ConstructFinalize(pLstn->stats)); + + CHKiRet(addEPollSock(epolld_lstn, pLstn, sock, &pLstn->epd)); + + /* add to start of server's listener list */ + pLstn->prev = NULL; + pLstn->next = pSrv->pLstn; + if(pSrv->pLstn != NULL) + pSrv->pLstn->prev = pLstn; + pSrv->pLstn = pLstn; + +finalize_it: + if(iRet != RS_RET_OK) { + if(pLstn != NULL) { + if(pLstn->stats != NULL) + statsobj.Destruct(&(pLstn->stats)); + free(pLstn); + } + } + + RETiRet; +} + + +/* add a session to the server + */ +static rsRetVal +addSess(ptcplstn_t *pLstn, int sock, prop_t *peerName, prop_t *peerIP) +{ + DEFiRet; + ptcpsess_t *pSess = NULL; + ptcpsrv_t *pSrv = pLstn->pSrv; + int pmsg_size_factor; + + CHKmalloc(pSess = malloc(sizeof(ptcpsess_t))); + pSess->next = NULL; + if(pLstn->pSrv->inst->startRegex == NULL) { + pmsg_size_factor = 1; + pSess->pMsg_save = NULL; + } else { + pmsg_size_factor = 2; + pSess->pMsg = NULL; + CHKmalloc(pSess->pMsg_save = malloc(1 + iMaxLine * pmsg_size_factor)); + } + CHKmalloc(pSess->pMsg = malloc(1 + iMaxLine * pmsg_size_factor)); + pSess->pLstn = pLstn; + pSess->sock = sock; + pSess->bSuppOctetFram = pLstn->bSuppOctetFram; + pSess->bSPFramingFix = pLstn->bSPFramingFix; + pSess->inputState = eAtStrtFram; + pSess->iMsg = 0; + pSess->iCurrLine = 1; + pSess->bzInitDone = 0; + pSess->bAtStrtOfFram = 1; + pSess->peerName = peerName; + pSess->peerIP = peerIP; + pSess->compressionMode = pLstn->pSrv->compressionMode; + pSess->startRegex = pLstn->pSrv->inst->startRegex; + pSess->iAddtlFrameDelim = pLstn->pSrv->iAddtlFrameDelim; + + /* add to start of server's listener list */ + pSess->prev = NULL; + + pthread_mutex_lock(&pSrv->mutSessLst); + int iTCPSessMax = pSrv->inst->iTCPSessMax; + if (iTCPSessMax > 0 && pSrv->iTCPSessCnt >= iTCPSessMax) { + pthread_mutex_unlock(&pSrv->mutSessLst); + LogError(0, RS_RET_MAX_SESS_REACHED, + "too many tcp sessions - dropping incoming request"); + ABORT_FINALIZE(RS_RET_MAX_SESS_REACHED); + } + + pSrv->iTCPSessCnt++; + pSess->next = pSrv->pSess; + if(pSrv->pSess != NULL) + pSrv->pSess->prev = pSess; + pSrv->pSess = pSess; + pthread_mutex_unlock(&pSrv->mutSessLst); + + CHKiRet(addEPollSock(epolld_sess, pSess, sock, &pSess->epd)); + +finalize_it: + if(iRet != RS_RET_OK) { + if(pSess != NULL) { + if (pSess->next != NULL) { + unlinkSess(pSess); + } + free(pSess->pMsg_save); + free(pSess->pMsg); + free(pSess); + } + } + + RETiRet; +} + + +/* finish zlib buffer, to be called before closing the session. + */ +static rsRetVal +doZipFinish(ptcpsess_t *pSess) +{ + int zRet; /* zlib return state */ + DEFiRet; + unsigned outavail; + struct syslogTime stTime; + uchar zipBuf[32*1024]; // TODO: use "global" one from pSess + + if(!pSess->bzInitDone) + goto done; + + pSess->zstrm.avail_in = 0; + /* run inflate() on buffer until everything has been compressed */ + do { + DBGPRINTF("doZipFinish: in inflate() loop, avail_in %d, total_in %ld\n", pSess->zstrm.avail_in, + pSess->zstrm.total_in); + pSess->zstrm.avail_out = sizeof(zipBuf); + pSess->zstrm.next_out = zipBuf; + zRet = inflate(&pSess->zstrm, Z_FINISH); /* no bad return value */ + DBGPRINTF("after inflate, ret %d, avail_out %d\n", zRet, pSess->zstrm.avail_out); + outavail = sizeof(zipBuf) - pSess->zstrm.avail_out; + if(outavail != 0) { + pSess->pLstn->rcvdDecompressed += outavail; + CHKiRet(DataRcvdUncompressed(pSess, (char*)zipBuf, outavail, &stTime, 0)); + // TODO: query time! + } + } while (pSess->zstrm.avail_out == 0); + +finalize_it: + zRet = inflateEnd(&pSess->zstrm); + if(zRet != Z_OK) { + DBGPRINTF("imptcp: error %d returned from zlib/inflateEnd()\n", zRet); + } + + pSess->bzInitDone = 0; +done: RETiRet; +} + +/* close/remove a session + * NOTE: we do not need to remove the socket from the epoll set, as according + * to the epoll man page it is automatically removed on close (Q6). The only + * exception is duplicated file handles, which we do not create. + */ +static rsRetVal +closeSess(ptcpsess_t *pSess) +{ + DEFiRet; + + if(pSess->compressionMode >= COMPRESS_STREAM_ALWAYS) + doZipFinish(pSess); + + const int sock = pSess->sock; + close(sock); + + unlinkSess(pSess); + + if(pSess->pLstn->pSrv->bEmitMsgOnClose) { + LogMsg(0, RS_RET_NO_ERRCODE, LOG_INFO, "imptcp: session on socket %d closed " + "with iRet %d.\n", sock, iRet); + } + STATSCOUNTER_INC(pSess->pLstn->ctrSessClose, pSess->pLstn->mutCtrSessClose); + + /* unlinked, now remove structure */ + destructSess(pSess); + + DBGPRINTF("imptcp: session on socket %d closed with iRet %d.\n", sock, iRet); + RETiRet; +} + + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->next = NULL; + + inst->pszBindPort = NULL; + inst->pszBindAddr = NULL; + inst->pszBindPath = NULL; + inst->fileUID = -1; + inst->fileGID = -1; + inst->maxFrameSize = 200000; + inst->fCreateMode = 0644; + inst->bFailOnPerms = 1; + inst->bUnlink = 0; + inst->discardTruncatedMsg = 0; + inst->flowControl = 1; + inst->pszBindRuleset = NULL; + inst->pszInputName = NULL; + inst->bSuppOctetFram = 1; + inst->bSPFramingFix = 0; + inst->bKeepAlive = 0; + inst->iKeepAliveIntvl = 0; + inst->iKeepAliveProbes = 0; + inst->iKeepAliveTime = 0; + inst->bEmitMsgOnClose = 0; + inst->bEmitMsgOnOpen = 0; + inst->dfltTZ = NULL; + inst->iAddtlFrameDelim = TCPSRV_NO_ADDTL_DELIMITER; + inst->startRegex = NULL; + inst->pBindRuleset = NULL; + inst->ratelimitBurst = 10000; /* arbitrary high limit */ + inst->ratelimitInterval = 0; /* off */ + inst->compressionMode = COMPRESS_SINGLE_MSG; + inst->multiLine = 0; + inst->socketBacklog = 5; + inst->pszLstnPortFileName = NULL; + inst->iTCPSessMax = -1; + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = inst; + } else { + loadModConf->tail->next = inst; + loadModConf->tail = inst; + } + + *pinst = inst; +finalize_it: + RETiRet; +} + + +/* This function is called when a new listener instace shall be added to + * the current config object via the legacy config system. It just shuffles + * all parameters to the listener in-memory instance. + */ +static rsRetVal addInstance(void __attribute__((unused)) *pVal, uchar *const pNewVal) +{ + instanceConf_t *inst; + DEFiRet; + + if(pNewVal == NULL || *pNewVal == '\0') { + parser_errmsg("imptcp: port number must be specified, listener ignored"); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + + /* if we reach this point, a valid port is given in pNewVal */ + CHKiRet(createInstance(&inst)); + CHKmalloc(inst->pszBindPort = ustrdup(pNewVal)); + if((cs.lstnIP == NULL) || (cs.lstnIP[0] == '\0')) { + inst->pszBindAddr = NULL; + } else { + CHKmalloc(inst->pszBindAddr = ustrdup(cs.lstnIP)); + } + if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) { + inst->pszBindRuleset = NULL; + } else { + CHKmalloc(inst->pszBindRuleset = ustrdup(cs.pszBindRuleset)); + } + if((cs.pszInputName == NULL) || (cs.pszInputName[0] == '\0')) { + inst->pszInputName = NULL; + } else { + CHKmalloc(inst->pszInputName = ustrdup(cs.pszInputName)); + } + inst->pBindRuleset = NULL; + inst->bSuppOctetFram = cs.bSuppOctetFram; + inst->bKeepAlive = cs.bKeepAlive; + inst->iKeepAliveIntvl = cs.iKeepAliveIntvl; + inst->iKeepAliveProbes = cs.iKeepAliveProbes; + inst->iKeepAliveTime = cs.iKeepAliveTime; + inst->bEmitMsgOnClose = cs.bEmitMsgOnClose; + inst->bEmitMsgOnOpen = cs.bEmitMsgOnOpen; + inst->iAddtlFrameDelim = cs.iAddtlFrameDelim; + inst->maxFrameSize = cs.maxFrameSize; + inst->iTCPSessMax = cs.iTCPSessMax; + +finalize_it: + free(pNewVal); + RETiRet; +} + + +static rsRetVal +addListner(modConfData_t __attribute__((unused)) *modConf, instanceConf_t *inst) +{ + DEFiRet; + ptcpsrv_t *pSrv = NULL; + + CHKmalloc(pSrv = calloc(1, sizeof(ptcpsrv_t))); + pthread_mutex_init(&pSrv->mutSessLst, NULL); + pSrv->ratelimiter = NULL; + pSrv->pSess = NULL; + pSrv->pLstn = NULL; + pSrv->inst = inst; + pSrv->bSuppOctetFram = inst->bSuppOctetFram; + pSrv->bSPFramingFix = inst->bSPFramingFix; + pSrv->bKeepAlive = inst->bKeepAlive; + pSrv->iKeepAliveIntvl = inst->iKeepAliveIntvl; + pSrv->iKeepAliveProbes = inst->iKeepAliveProbes; + pSrv->iKeepAliveTime = inst->iKeepAliveTime; + pSrv->bEmitMsgOnClose = inst->bEmitMsgOnClose; + pSrv->bEmitMsgOnOpen = inst->bEmitMsgOnOpen; + pSrv->compressionMode = inst->compressionMode; + pSrv->dfltTZ = inst->dfltTZ; + if (inst->pszBindPort != NULL) { + CHKmalloc(pSrv->port = ustrdup(inst->pszBindPort)); + } + pSrv->iAddtlFrameDelim = inst->iAddtlFrameDelim; + pSrv->multiLine = inst->multiLine; + pSrv->socketBacklog = inst->socketBacklog; + pSrv->pszLstnPortFileName = inst->pszLstnPortFileName; + pSrv->maxFrameSize = inst->maxFrameSize; + if (inst->pszBindAddr == NULL) { + pSrv->lstnIP = NULL; + } else { + CHKmalloc(pSrv->lstnIP = ustrdup(inst->pszBindAddr)); + } + if (inst->pszBindPath == NULL) { + pSrv->path = NULL; + } else { + CHKmalloc(pSrv->path = ustrdup(inst->pszBindPath)); + CHKmalloc(pSrv->port = ustrdup(inst->pszBindPath)); + pSrv->bUnixSocket = 1; + pSrv->fCreateMode = inst->fCreateMode; + pSrv->fileUID = inst->fileUID; + pSrv->fileGID = inst->fileGID; + pSrv->bFailOnPerms = inst->bFailOnPerms; + } + + pSrv->bUnlink = inst->bUnlink; + pSrv->discardTruncatedMsg = inst->discardTruncatedMsg; + pSrv->flowControl = inst->flowControl; + pSrv->pRuleset = inst->pBindRuleset; + pSrv->pszInputName = ustrdup((inst->pszInputName == NULL) ? UCHAR_CONSTANT("imptcp") : inst->pszInputName); + pSrv->iTCPSessMax = inst->iTCPSessMax; + CHKiRet(prop.Construct(&pSrv->pInputName)); + CHKiRet(prop.SetString(pSrv->pInputName, pSrv->pszInputName, ustrlen(pSrv->pszInputName))); + CHKiRet(prop.ConstructFinalize(pSrv->pInputName)); + + CHKiRet(ratelimitNew(&pSrv->ratelimiter, "imptcp", (char*) pSrv->port)); + ratelimitSetLinuxLike(pSrv->ratelimiter, inst->ratelimitInterval, inst->ratelimitBurst); + ratelimitSetThreadSafe(pSrv->ratelimiter); + /* add to linked list */ + pSrv->pNext = pSrvRoot; + pSrvRoot = pSrv; + + /* all config vars are auto-reset -- this also is very useful with the + * new config format effort (v6). + */ + resetConfigVariables(NULL, NULL); + +finalize_it: + if(iRet != RS_RET_OK) { + LogError(0, NO_ERRCODE, "error %d trying to add listener", iRet); + if(pSrv != NULL) { + destructSrv(pSrv); + } + } + RETiRet; +} + + +/* destroy worker pool structures and wait for workers to terminate + */ +static void +startWorkerPool(void) +{ + int i; + pthread_mutex_lock(&io_q.mut); /* locking to keep Coverity happy */ + wrkrRunning = 0; + pthread_mutex_unlock(&io_q.mut); + DBGPRINTF("imptcp: starting worker pool, %d workers\n", runModConf->wrkrMax); + wrkrInfo = calloc(runModConf->wrkrMax, sizeof(struct wrkrInfo_s)); + if (wrkrInfo == NULL) { + LogError(errno, RS_RET_OUT_OF_MEMORY, "imptcp: worker-info array allocation failed."); + return; + } + for(i = 0 ; i < runModConf->wrkrMax ; ++i) { + /* init worker info structure! */ + wrkrInfo[i].wrkrIdx = i; + wrkrInfo[i].numCalled = 0; + pthread_create(&wrkrInfo[i].tid, &wrkrThrdAttr, wrkr, &(wrkrInfo[i])); + } + +} + +/* destroy worker pool structures and wait for workers to terminate + */ +static void +stopWorkerPool(void) +{ + int i; + DBGPRINTF("imptcp: stopping worker pool\n"); + pthread_mutex_lock(&io_q.mut); + pthread_cond_broadcast(&io_q.wakeup_worker); /* awake wrkr if not running */ + pthread_mutex_unlock(&io_q.mut); + for(i = 0 ; i < runModConf->wrkrMax ; ++i) { + pthread_join(wrkrInfo[i].tid, NULL); + DBGPRINTF("imptcp: info: worker %d was called %llu times\n", i, wrkrInfo[i].numCalled); + } + free(wrkrInfo); +} + + + +/* start up all listeners + * This is a one-time stop once the module is set to start. + */ +static rsRetVal +startupServers(void) +{ + DEFiRet; + rsRetVal localRet, lastErr; + int iOK; + int iAll; + ptcpsrv_t *pSrv; + + iAll = iOK = 0; + lastErr = RS_RET_ERR; + pSrv = pSrvRoot; + while(pSrv != NULL) { + DBGPRINTF("imptcp: starting up server for port %s, name '%s'\n", pSrv->port, pSrv->pszInputName); + localRet = startupSrv(pSrv); + if(localRet == RS_RET_OK) + iOK++; + else + lastErr = localRet; + ++iAll; + pSrv = pSrv->pNext; + } + + DBGPRINTF("imptcp: %d out of %d servers started successfully\n", iOK, iAll); + if(iOK == 0) /* iff all fails, we report an error */ + iRet = lastErr; + + RETiRet; +} + +/* process new activity on listener. This means we need to accept a new + * connection. + */ +static rsRetVal ATTR_NONNULL() +lstnActivity(ptcplstn_t *const pLstn) +{ + int newSock = -1; + prop_t *peerName; + prop_t *peerIP; + rsRetVal localRet; + DEFiRet; + + DBGPRINTF("imptcp: new connection on listen socket %d\n", pLstn->sock); + while(glbl.GetGlobalInputTermState() == 0) { + localRet = AcceptConnReq(pLstn, &newSock, &peerName, &peerIP); + DBGPRINTF("imptcp: AcceptConnReq on listen socket %d returned %d\n", pLstn->sock, localRet); + if(localRet == RS_RET_NO_MORE_DATA || glbl.GetGlobalInputTermState() == 1) { + break; + } + CHKiRet(localRet); + localRet = addSess(pLstn, newSock, peerName, peerIP); + if(localRet != RS_RET_OK) { + close(newSock); + prop.Destruct(&peerName); + prop.Destruct(&peerIP); + ABORT_FINALIZE(localRet); + } + } + +finalize_it: + RETiRet; +} + +/* process new activity on session. This means we need to accept data + * or close the session. + */ +static rsRetVal +sessActivity(ptcpsess_t *const pSess, int *const continue_polling) +{ + int lenRcv; + int lenBuf; + uchar *peerName; + int lenPeer; + int remsock = 0; /* init just to keep compiler happy... :-( */ + sbool bEmitOnClose = 0; + char rcvBuf[128*1024]; + int runs = 0; + DEFiRet; + + DBGPRINTF("imptcp: new activity on session socket %d\n", pSess->sock); + + while(runs++ < 16) { + lenBuf = sizeof(rcvBuf); + lenRcv = recv(pSess->sock, rcvBuf, lenBuf, 0); + + if(lenRcv > 0) { + /* have data, process it */ + DBGPRINTF("imptcp: data(%d) on socket %d: %s\n", lenBuf, pSess->sock, rcvBuf); + CHKiRet(DataRcvd(pSess, rcvBuf, lenRcv)); + } else if (lenRcv == 0) { + /* session was closed, do clean-up */ + if(pSess->pLstn->pSrv->bEmitMsgOnClose) { + prop.GetString(pSess->peerName, &peerName, &lenPeer), + remsock = pSess->sock; + bEmitOnClose = 1; + } + *continue_polling = 0; + if(bEmitOnClose) { + LogError(0, RS_RET_PEER_CLOSED_CONN, "imptcp session %d closed by " + "remote peer %s.", remsock, peerName); + } + CHKiRet(closeSess(pSess)); /* close may emit more messages in strmzip mode! */ + break; + } else { + if(CHK_EAGAIN_EWOULDBLOCK) + break; + DBGPRINTF("imptcp: error on session socket %d - closed.\n", pSess->sock); + *continue_polling = 0; + closeSess(pSess); /* try clean-up by dropping session */ + break; + } + } + +finalize_it: + RETiRet; +} + + +/* This function is called to process a single request. This may + * be carried out by the main worker or a helper. It can be run + * concurrently. + */ +static void +processWorkItem(epolld_t *epd) +{ + + int continue_polling = 1; + + switch(epd->typ) { + case epolld_lstn: + /* listener never stops polling (except server shutdown) */ + lstnActivity((ptcplstn_t *) epd->ptr); + break; + case epolld_sess: + sessActivity((ptcpsess_t *) epd->ptr, &continue_polling); + break; + default: + LogError(0, RS_RET_INTERNAL_ERROR, "error: invalid epolld_type_t %d after epoll", epd->typ); + break; + } + if (continue_polling == 1) { + epoll_ctl(epollfd, EPOLL_CTL_MOD, epd->sock, &(epd->ev)); + } +} + + +static rsRetVal +initIoQ(void) +{ + DEFiRet; + CHKiConcCtrl(pthread_mutex_init(&io_q.mut, NULL)); + CHKiConcCtrl(pthread_cond_init(&io_q.wakeup_worker, NULL)); + STAILQ_INIT(&io_q.q); + io_q.sz = 0; + io_q.ctrMaxSz = 0; /* TODO: discuss this and fix potential concurrent read/write issues */ + CHKiRet(statsobj.Construct(&io_q.stats)); + CHKiRet(statsobj.SetName(io_q.stats, (uchar*) "io-work-q")); + CHKiRet(statsobj.SetOrigin(io_q.stats, (uchar*) "imptcp")); + STATSCOUNTER_INIT(io_q.ctrEnq, io_q.mutCtrEnq); + CHKiRet(statsobj.AddCounter(io_q.stats, UCHAR_CONSTANT("enqueued"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &io_q.ctrEnq)); + CHKiRet(statsobj.AddCounter(io_q.stats, UCHAR_CONSTANT("maxqsize"), + ctrType_Int, CTR_FLAG_NONE, &io_q.ctrMaxSz)); + CHKiRet(statsobj.ConstructFinalize(io_q.stats)); +finalize_it: + RETiRet; +} + +static void +destroyIoQ(void) +{ + io_req_t *n; + if (io_q.stats != NULL) { + statsobj.Destruct(&io_q.stats); + } + pthread_mutex_lock(&io_q.mut); + while (!STAILQ_EMPTY(&io_q.q)) { + n = STAILQ_FIRST(&io_q.q); + STAILQ_REMOVE_HEAD(&io_q.q, link); + LogError(0, RS_RET_INTERNAL_ERROR, "imptcp: discarded enqueued io-work to allow shutdown " + "- ignored"); + free(n); + } + io_q.sz = 0; + pthread_mutex_unlock(&io_q.mut); + pthread_cond_destroy(&io_q.wakeup_worker); + pthread_mutex_destroy(&io_q.mut); +} + +static rsRetVal +enqueueIoWork(epolld_t *epd, int dispatchInlineIfQueueFull) { + io_req_t *n; + int dispatchInline; + int inlineDispatchThreshold; + DEFiRet; + + CHKmalloc(n = malloc(sizeof(io_req_t))); + n->epd = epd; + + inlineDispatchThreshold = DFLT_inlineDispatchThreshold * runModConf->wrkrMax; + dispatchInline = 0; + + pthread_mutex_lock(&io_q.mut); + if (dispatchInlineIfQueueFull && io_q.sz > inlineDispatchThreshold) { + dispatchInline = 1; + } else { + STAILQ_INSERT_TAIL(&io_q.q, n, link); + io_q.sz++; + STATSCOUNTER_INC(io_q.ctrEnq, io_q.mutCtrEnq); + STATSCOUNTER_SETMAX_NOMUT(io_q.ctrMaxSz, io_q.sz); + pthread_cond_signal(&io_q.wakeup_worker); + } + pthread_mutex_unlock(&io_q.mut); + + if (dispatchInline == 1) { + free(n); + processWorkItem(epd); + } +finalize_it: + if (iRet != RS_RET_OK) { + if (n == NULL) { + LogError(0, iRet, "imptcp: couldn't allocate memory to enqueue io-request - ignored"); + } + } + RETiRet; +} + +/* This function is called to process a complete workset, that + * is a set of events returned from epoll. + */ +static void +processWorkSet(int nEvents, struct epoll_event events[]) +{ + int iEvt; + int remainEvents; + remainEvents = nEvents; + epolld_t *epd; + + for(iEvt = 0 ; (iEvt < nEvents) && (glbl.GetGlobalInputTermState() == 0) ; ++iEvt) { + epd = (epolld_t*)events[iEvt].data.ptr; + if(runModConf->bProcessOnPoller && remainEvents == 1) { + /* process self, save context switch */ + processWorkItem(epd); + } else { + enqueueIoWork(epd, runModConf->bProcessOnPoller); + } + --remainEvents; + } +} + + +/* worker to process incoming requests + */ +static void * +wrkr(void *myself) +{ + struct wrkrInfo_s *me = (struct wrkrInfo_s*) myself; + pthread_mutex_lock(&io_q.mut); + ++wrkrRunning; + pthread_mutex_unlock(&io_q.mut); + + uchar thrdName[32]; + snprintf((char*)thrdName, sizeof(thrdName), "imptcp/w%d", me->wrkrIdx); +# if defined(HAVE_PRCTL) && defined(PR_SET_NAME) + /* set thread name - we ignore if the call fails, has no harsh consequences... */ + if(prctl(PR_SET_NAME, thrdName, 0, 0, 0) != 0) { + DBGPRINTF("prctl failed, not setting thread name for '%s'\n", thrdName); + } +# endif + + io_req_t *n; + while(1) { + n = NULL; + pthread_mutex_lock(&io_q.mut); + if (io_q.sz == 0) { + --wrkrRunning; + if (glbl.GetGlobalInputTermState() != 0) { + pthread_mutex_unlock(&io_q.mut); + break; + } else { + DBGPRINTF("imptcp: worker %llu waiting on new work items\n", + (unsigned long long) me->tid); + pthread_cond_wait(&io_q.wakeup_worker, &io_q.mut); + DBGPRINTF("imptcp: worker %llu awoken\n", (unsigned long long) me->tid); + } + ++wrkrRunning; + } + if (io_q.sz > 0) { + n = STAILQ_FIRST(&io_q.q); + STAILQ_REMOVE_HEAD(&io_q.q, link); + io_q.sz--; + } + pthread_mutex_unlock(&io_q.mut); + + if (n != NULL) { + ++me->numCalled; + processWorkItem(n->epd); + free(n); + } + } + return NULL; +} + + +BEGINnewInpInst + struct cnfparamvals *pvals; + instanceConf_t *inst; + char *cstr; + int i; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imptcp)\n"); + + if((pvals = nvlstGetParams(lst, &inppblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("input param blk in imptcp:\n"); + cnfparamsPrint(&inppblk, pvals); + } + + CHKiRet(createInstance(&inst)); + + for(i = 0 ; i < inppblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(inppblk.descr[i].name, "port")) { + inst->pszBindPort = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "address")) { + inst->pszBindAddr = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "path")) { + inst->pszBindPath = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "unlink")) { + inst->bUnlink = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "discardtruncatedmsg")) { + inst->discardTruncatedMsg = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "flowcontrol")) { + inst->flowControl = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "fileowner")) { + inst->fileUID = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "fileownernum")) { + inst->fileUID = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "filegroup")) { + inst->fileGID = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "filegroupnum")) { + inst->fileGID = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "filecreatemode")) { + inst->fCreateMode = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "failonpermsfailure")) { + inst->bFailOnPerms = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "name")) { + inst->pszInputName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "maxframesize")) { + const int max = (int) pvals[i].val.d.n; + if(max <= 200000000) { + inst->maxFrameSize = max; + } else { + parser_errmsg("imptcp: invalid value for 'maxFrameSize' " + "parameter given is %d, max is 200000000", max); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + } else if(!strcmp(inppblk.descr[i].name, "framing.delimiter.regex")) { + inst->startRegex = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "supportoctetcountedframing")) { + inst->bSuppOctetFram = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "framingfix.cisco.asa")) { + inst->bSPFramingFix = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "compression.mode")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + if(!strcasecmp(cstr, "stream:always")) { + inst->compressionMode = COMPRESS_STREAM_ALWAYS; + } else if(!strcasecmp(cstr, "none")) { + inst->compressionMode = COMPRESS_NEVER; + } else { + parser_errmsg("imptcp: invalid value for 'compression.mode' " + "parameter (given is '%s')", cstr); + free(cstr); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + free(cstr); + } else if(!strcmp(inppblk.descr[i].name, "maxsessions")) { + inst->iTCPSessMax = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive")) { + inst->bKeepAlive = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.probes")) { + inst->iKeepAliveProbes = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.time")) { + inst->iKeepAliveTime = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.interval")) { + inst->iKeepAliveIntvl = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "addtlframedelimiter")) { + inst->iAddtlFrameDelim = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "notifyonconnectionclose")) { + inst->bEmitMsgOnClose = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "notifyonconnectionopen")) { + inst->bEmitMsgOnOpen = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "defaulttz")) { + inst->dfltTZ = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "ratelimit.burst")) { + inst->ratelimitBurst = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ratelimit.interval")) { + inst->ratelimitInterval = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "multiline")) { + inst->multiLine = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "listenportfilename")) { + inst->pszLstnPortFileName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "socketbacklog")) { + inst->socketBacklog = (int) pvals[i].val.d.n; + } else { + dbgprintf("imptcp: program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + + char *bindPort = (char *) inst->pszBindPort; + char *bindPath = (char *) inst->pszBindPath; + if ((bindPort == NULL || strlen(bindPort) < 1) && (bindPath == NULL || strlen (bindPath) < 1)) { + parser_errmsg("imptcp: Must have either port or path defined"); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + } + + if(inst->startRegex != NULL) { + const int errcode = regcomp(&inst->start_preg, (char*)inst->startRegex, REG_EXTENDED); + if(errcode != 0) { + char errbuff[512]; + regerror(errcode, &inst->start_preg, errbuff, sizeof(errbuff)); + parser_errmsg("imptcp: error in framing.delimiter.regex expansion: %s", errbuff); + ABORT_FINALIZE(RS_RET_ERR); + } + } + + if (inst->iTCPSessMax == -1) { + inst->iTCPSessMax = loadModConf->iTCPSessMax; + } +finalize_it: +CODE_STD_FINALIZERnewInpInst + cnfparamvalsDestruct(pvals, &inppblk); +ENDnewInpInst + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + /* init our settings */ + loadModConf->wrkrMax = DFLT_wrkrMax; + loadModConf->bProcessOnPoller = 1; + loadModConf->configSetViaV2Method = 0; + bLegacyCnfModGlobalsPermitted = 1; + /* init legacy config vars */ + initConfigSettings(); +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "imptcp: error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for imptcp:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "threads")) { + loadModConf->wrkrMax = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "maxsessions")) { + loadModConf->iTCPSessMax = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "processOnPoller")) { + loadModConf->bProcessOnPoller = (int) pvals[i].val.d.n; + } else { + dbgprintf("imptcp: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + + /* remove all of our legacy handlers, as they can not used in addition + * the the new-style config method. + */ + bLegacyCnfModGlobalsPermitted = 0; + loadModConf->configSetViaV2Method = 1; + +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(!loadModConf->configSetViaV2Method) { + /* persist module-specific settings from legacy config system */ + loadModConf->wrkrMax = cs.wrkrMax; + } + + loadModConf = NULL; /* done loading */ + /* free legacy config vars */ + free(cs.pszInputName); + free(cs.lstnIP); + cs.pszInputName = NULL; + cs.lstnIP = NULL; +ENDendCnfLoad + + +/* function to generate error message if framework does not find requested ruleset */ +static inline void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + LogError(0, NO_ERRCODE, "imptcp: ruleset '%s' for port %s not found - " + "using default ruleset instead", inst->pszBindRuleset, + inst->pszBindPort); +} +BEGINcheckCnf + instanceConf_t *inst; +CODESTARTcheckCnf + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + std_checkRuleset(pModConf, inst); + } +ENDcheckCnf + + +BEGINactivateCnfPrePrivDrop + instanceConf_t *inst; +CODESTARTactivateCnfPrePrivDrop + iMaxLine = glbl.GetMaxLine(runConf); /* get maximum size we currently support */ + DBGPRINTF("imptcp: config params iMaxLine %d\n", iMaxLine); + + runModConf = pModConf; + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + addListner(pModConf, inst); + } + if(pSrvRoot == NULL) { + LogError(0, RS_RET_NO_LSTN_DEFINED, "imptcp: no ptcp server defined, module can not run."); + ABORT_FINALIZE(RS_RET_NO_RUN); + } + +# if defined(EPOLL_CLOEXEC) && defined(HAVE_EPOLL_CREATE1) + DBGPRINTF("imptcp uses epoll_create1()\n"); + epollfd = epoll_create1(EPOLL_CLOEXEC); + if(epollfd < 0 && errno == ENOSYS) +# endif + { + DBGPRINTF("imptcp uses epoll_create()\n"); + /* reading the docs, the number of epoll events passed to + * epoll_create() seems not to be used at all in kernels. So + * we just provide "a" number, happens to be 10. + */ + epollfd = epoll_create(10); + } + + if(epollfd < 0) { + LogError(0, RS_RET_EPOLL_CR_FAILED, "error: epoll_create() failed"); + ABORT_FINALIZE(RS_RET_NO_RUN); + } + + /* start up servers, but do not yet read input data */ + CHKiRet(startupServers()); + DBGPRINTF("imptcp started up, but not yet receiving data\n"); +finalize_it: +ENDactivateCnfPrePrivDrop + + +BEGINactivateCnf +CODESTARTactivateCnf + /* nothing to do, all done pre priv drop */ +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; +CODESTARTfreeCnf + for(inst = pModConf->root ; inst != NULL ; ) { + free(inst->pszBindPort); + free(inst->pszBindPath); + free(inst->pszBindAddr); + free(inst->pszBindRuleset); + free(inst->pszInputName); + free(inst->dfltTZ); + if(inst->startRegex != NULL) { + regfree(&inst->start_preg); + free(inst->startRegex); + } + del = inst; + inst = inst->next; + free(del); + } +ENDfreeCnf + + +/* This function is called to gather input. + */ +BEGINrunInput + int nEvents; + struct epoll_event events[128]; +CODESTARTrunInput + initIoQ(); + startWorkerPool(); + DBGPRINTF("imptcp: now beginning to process input data\n"); + while(glbl.GetGlobalInputTermState() == 0) { + DBGPRINTF("imptcp going on epoll_wait\n"); + nEvents = epoll_wait(epollfd, events, sizeof(events)/sizeof(struct epoll_event), -1); + DBGPRINTF("imptcp: epoll returned %d events\n", nEvents); + processWorkSet(nEvents, events); + } + DBGPRINTF("imptcp: successfully terminated\n"); + /* we stop the worker pool in AfterRun, in case we get cancelled for some reason (old Interface) */ +ENDrunInput + + +/* initialize and return if will run or not */ +BEGINwillRun +CODESTARTwillRun +ENDwillRun + + +/* completely shut down a server, that means closing all of its + * listeners and sessions. + */ +static void +shutdownSrv(ptcpsrv_t *pSrv) +{ + ptcplstn_t *pLstn, *lstnDel; + ptcpsess_t *pSess, *sessDel; + + /* listeners */ + pLstn = pSrv->pLstn; + while(pLstn != NULL) { + close(pLstn->sock); + statsobj.Destruct(&(pLstn->stats)); + /* now unlink listner */ + lstnDel = pLstn; + pLstn = pLstn->next; + DBGPRINTF("imptcp shutdown listen socket %d (rcvd %lld bytes, " + "decompressed %lld)\n", lstnDel->sock, lstnDel->rcvdBytes, + lstnDel->rcvdDecompressed); + free(lstnDel->epd); + free(lstnDel); + } + + if (pSrv->bUnixSocket && pSrv->bUnlink) { + unlink((char*) pSrv->path); + } + + /* sessions */ + pSess = pSrv->pSess; + while(pSess != NULL) { + close(pSess->sock); + sessDel = pSess; + pSess = pSess->next; + DBGPRINTF("imptcp shutdown session socket %d\n", sessDel->sock); + destructSess(sessDel); + } +} + + +BEGINafterRun + ptcpsrv_t *pSrv, *srvDel; +CODESTARTafterRun + stopWorkerPool(); + destroyIoQ(); + + /* we need to close everything that is still open */ + pSrv = pSrvRoot; + while(pSrv != NULL) { + srvDel = pSrv; + pSrv = pSrv->pNext; + shutdownSrv(srvDel); + destructSrv(srvDel); + } + + close(epollfd); +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + pthread_attr_destroy(&wrkrThrdAttr); + /* release objects we used */ + objRelease(glbl, CORE_COMPONENT); + objRelease(statsobj, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(net, LM_NET_FILENAME); + objRelease(datetime, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); +ENDmodExit + + +static rsRetVal +resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + cs.bEmitMsgOnClose = 0; + cs.bEmitMsgOnOpen = 0; + cs.wrkrMax = DFLT_wrkrMax; + cs.bKeepAlive = 0; + cs.iKeepAliveProbes = 0; + cs.iKeepAliveTime = 0; + cs.iKeepAliveIntvl = 0; + cs.bSuppOctetFram = 1; + cs.iAddtlFrameDelim = TCPSRV_NO_ADDTL_DELIMITER; + cs.maxFrameSize = 200000; + free(cs.pszInputName); + cs.pszInputName = NULL; + free(cs.lstnIP); + cs.lstnIP = NULL; + return RS_RET_OK; +} + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + /* request objects we use */ + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(net, LM_NET_FILENAME)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + + /* initialize "read-only" thread attributes */ + pthread_attr_init(&wrkrThrdAttr); + pthread_attr_setstacksize(&wrkrThrdAttr, 4096*1024); + + /* init legacy config settings */ + initConfigSettings(); + + /* register config file handlers */ + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpserverrun"), 0, eCmdHdlrGetWord, + addInstance, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpserverkeepalive"), 0, eCmdHdlrBinary, + NULL, &cs.bKeepAlive, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpserverkeepalive_probes"), 0, eCmdHdlrInt, + NULL, &cs.iKeepAliveProbes, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpserverkeepalive_time"), 0, eCmdHdlrInt, + NULL, &cs.iKeepAliveTime, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpserverkeepalive_intvl"), 0, eCmdHdlrInt, + NULL, &cs.iKeepAliveIntvl, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpserversupportoctetcountedframing"), 0, eCmdHdlrBinary, + NULL, &cs.bSuppOctetFram, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpservernotifyonconnectionclose"), 0, + eCmdHdlrBinary, NULL, &cs.bEmitMsgOnClose, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpserveraddtlframedelimiter"), 0, eCmdHdlrInt, + NULL, &cs.iAddtlFrameDelim, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpserverinputname"), 0, + eCmdHdlrGetWord, NULL, &cs.pszInputName, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpserverlistenip"), 0, + eCmdHdlrGetWord, NULL, &cs.lstnIP, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputptcpserverbindruleset"), 0, + eCmdHdlrGetWord, NULL, &cs.pszBindRuleset, STD_LOADABLE_MODULE_ID)); + /* module-global parameters */ + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputptcpserverhelperthreads"), 0, eCmdHdlrInt, + NULL, &cs.wrkrMax, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("resetconfigvariables"), 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit + + +/* vim:set ai: + */ diff --git a/plugins/imrelp/Makefile.am b/plugins/imrelp/Makefile.am new file mode 100644 index 0000000..8c6faff --- /dev/null +++ b/plugins/imrelp/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = imrelp.la + +imrelp_la_SOURCES = imrelp.c +imrelp_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RELP_CFLAGS) $(RSRT_CFLAGS) +imrelp_la_LDFLAGS = -module -avoid-version +imrelp_la_LIBADD = $(RELP_LIBS) diff --git a/plugins/imrelp/Makefile.in b/plugins/imrelp/Makefile.in new file mode 100644 index 0000000..d5c2dd0 --- /dev/null +++ b/plugins/imrelp/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/imrelp/imrelp.c b/plugins/imrelp/imrelp.c new file mode 100644 index 0000000..4f9295c --- /dev/null +++ b/plugins/imrelp/imrelp.c @@ -0,0 +1,954 @@ +/* imrelp.c + * + * This is the implementation of the RELP input module. + * + * File begun on 2008-03-13 by RGerhards + * + * Copyright 2008-2019 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdlib.h> +#include <assert.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <stdarg.h> +#include <ctype.h> +#include <netinet/in.h> +#include <netdb.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <signal.h> +#include <librelp.h> +#include "rsyslog.h" +#include "dirty.h" +#include "errmsg.h" +#include "cfsysline.h" +#include "module-template.h" +#include "net.h" +#include "msg.h" +#include "unicode-helper.h" +#include "prop.h" +#include "ruleset.h" +#include "glbl.h" +#include "statsobj.h" +#include "srUtils.h" +#include "parserif.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imrelp") + +/* static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(net) +DEFobjCurrIf(prop) +DEFobjCurrIf(ruleset) +DEFobjCurrIf(glbl) +DEFobjCurrIf(statsobj) + +/* forward definitions */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + + +/* Module static data */ +/* config vars for legacy config system */ +static relpEngine_t *pRelpEngine; /* our relp engine */ + +/* config settings */ +typedef struct configSettings_s { + uchar *pszBindRuleset; /* name of Ruleset to bind to */ +} configSettings_t; +static configSettings_t cs; + +struct instanceConf_s { + uchar *pszBindPort; /* port to bind to */ + uchar *pszBindAddr; /* address to bind to */ + uchar *pszBindRuleset; /* name of ruleset to bind to */ + uchar *pszInputName; /* value for inputname property */ + prop_t *pInputName; /* InputName in property format for fast access */ + ruleset_t *pBindRuleset; /* ruleset to bind listener to */ + sbool bKeepAlive; /* support keep-alive packets */ + sbool bEnableTLS; + sbool bEnableTLSZip; + sbool bEnableLstn; /* flag to permit disabling of listener in error case */ + int dhBits; + size_t maxDataSize; + int oversizeMode; + uchar *pristring; /* GnuTLS priority string (NULL if not to be provided) */ + uchar *authmode; /* TLS auth mode */ + uchar *caCertFile; + uchar *myCertFile; + uchar *myPrivKeyFile; +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + uchar *tlscfgcmd; +#endif + int iKeepAliveIntvl; + int iKeepAliveProbes; + int iKeepAliveTime; + flowControl_t flowCtlType; + struct { + int nmemb; + uchar **name; + } permittedPeers; + + struct instanceConf_s *next; + /* with librelp, this module does not have any own specific session + * or listener active data item. As a "work-around", we keep some + * data items inside the configuration object. To keep things + * decently clean, we put them all into their dedicated struct. So + * it is easy to judge what is actual configuration and what is + * dynamic runtime data. -- rgerhards, 2013-06-18 + */ + struct { + statsobj_t *stats; /* listener stats */ + STATSCOUNTER_DEF(ctrSubmit, mutCtrSubmit) + } data; +}; + + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + instanceConf_t *root, *tail; + const char *tlslib; + uchar *pszBindRuleset; /* default name of Ruleset to bind to */ +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */ + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "ruleset", eCmdHdlrGetWord, 0 }, + { "tls.tlslib", eCmdHdlrString, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "port", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "address", eCmdHdlrString, 0 }, + { "name", eCmdHdlrString, 0 }, + { "ruleset", eCmdHdlrString, 0 }, + { "keepalive", eCmdHdlrBinary, 0 }, + { "keepalive.probes", eCmdHdlrInt, 0 }, + { "keepalive.time", eCmdHdlrInt, 0 }, + { "keepalive.interval", eCmdHdlrInt, 0 }, + { "maxdatasize", eCmdHdlrSize, 0 }, + { "oversizemode", eCmdHdlrString, 0 }, + { "flowcontrol", eCmdHdlrGetWord, 0 }, + { "tls", eCmdHdlrBinary, 0 }, + { "tls.permittedpeer", eCmdHdlrArray, 0 }, + { "tls.authmode", eCmdHdlrString, 0 }, + { "tls.dhbits", eCmdHdlrInt, 0 }, + { "tls.prioritystring", eCmdHdlrString, 0 }, + { "tls.cacert", eCmdHdlrString, 0 }, + { "tls.mycert", eCmdHdlrString, 0 }, + { "tls.myprivkey", eCmdHdlrString, 0 }, + { "tls.tlscfgcmd", eCmdHdlrString, 0 }, + { "tls.compression", eCmdHdlrBinary, 0 } +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; + +#include "im-helper.h" /* must be included AFTER the type definitions! */ +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ + +/* ------------------------------ callbacks ------------------------------ */ + +PRAGMA_DIAGNOSTIC_PUSH +PRAGMA_IGNORE_Wformat_nonliteral +static void __attribute__((format(printf, 1, 2))) +imrelp_dbgprintf(const char *fmt, ...) +{ + va_list ap; + char pszWriteBuf[32*1024+1]; //this function has to be able to + /*generate a buffer longer than that of r_dbgprintf, so + r_dbgprintf can properly truncate*/ + + if(!(Debug && debugging_on)) { + return; + } + + va_start(ap, fmt); + vsnprintf(pszWriteBuf, sizeof(pszWriteBuf), fmt, ap); + va_end(ap); + r_dbgprintf("imrelp.c", "%s", pszWriteBuf); +} +PRAGMA_DIAGNOSTIC_POP + +static void +onErr(void *pUsr, char *objinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode) +{ + instanceConf_t *inst = (instanceConf_t*) pUsr; + LogError(0, RS_RET_RELP_AUTH_FAIL, "imrelp[%s]: error '%s', object " + " '%s' - input may not work as intended", + inst->pszBindPort, errmesg, objinfo); +} + +static void +onGenericErr(char *objinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode) +{ + LogError(0, RS_RET_RELP_ERR, "imrelp: librelp error '%s', object " + " '%s' - input may not work as intended", errmesg, objinfo); +} + +static void +onAuthErr(void *pUsr, char *authinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode) +{ + instanceConf_t *inst = (instanceConf_t*) pUsr; + LogError(0, RS_RET_RELP_AUTH_FAIL, "imrelp[%s]: authentication error '%s', peer " + "is '%s'", inst->pszBindPort, errmesg, authinfo); +} + +/* callback for receiving syslog messages. This function is invoked from the + * RELP engine when a syslog message arrived. It must return a relpRetVal, + * with anything else but RELP_RET_OK terminating the relp session. Please note + * that RELP_RET_OK is equal to RS_RET_OK and the other libRELP error codes + * are different from our rsRetVal. So we can simply use our own iRet system + * to fulfill the requirement. + * rgerhards, 2008-03-21 + * Note: librelp 1.0.0 is required in order to receive the IP address, otherwise + * we will only see the hostname (twice). -- rgerhards, 2009-10-14 + */ +static relpRetVal +onSyslogRcv(void *pUsr, uchar *pHostname, uchar *pIP, uchar *msg, size_t lenMsg) +{ + prop_t *pProp = NULL; + smsg_t *pMsg; + instanceConf_t *inst = (instanceConf_t*) pUsr; + DEFiRet; + + CHKiRet(msgConstruct(&pMsg)); + MsgSetInputName(pMsg, inst->pInputName); + MsgSetRawMsg(pMsg, (char*)msg, lenMsg); + MsgSetFlowControlType(pMsg, inst->flowCtlType); + MsgSetRuleset(pMsg, inst->pBindRuleset); + pMsg->msgFlags = PARSE_HOSTNAME | NEEDS_PARSING; + + /* TODO: optimize this, we can store it inside the session */ + MsgSetRcvFromStr(pMsg, pHostname, ustrlen(pHostname), &pProp); + CHKiRet(prop.Destruct(&pProp)); + CHKiRet(MsgSetRcvFromIPStr(pMsg, pIP, ustrlen(pIP), &pProp)); + CHKiRet(prop.Destruct(&pProp)); + CHKiRet(submitMsg2(pMsg)); + STATSCOUNTER_INC(inst->data.ctrSubmit, inst->data.mutCtrSubmit); + +finalize_it: + + RETiRet; +} + + +/* ------------------------------ end callbacks ------------------------------ */ + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->next = NULL; + + inst->pszBindPort = NULL; + inst->pszBindAddr = NULL; + inst->pszBindRuleset = NULL; + inst->pszInputName = NULL; + inst->pBindRuleset = NULL; + inst->bKeepAlive = 0; + inst->iKeepAliveIntvl = 0; + inst->iKeepAliveProbes = 0; + inst->iKeepAliveTime = 0; + inst->bEnableTLS = 0; + inst->bEnableTLSZip = 0; + inst->bEnableLstn = 0; + inst->dhBits = 0; + inst->pristring = NULL; + inst->authmode = NULL; + inst->permittedPeers.nmemb = 0; + inst->caCertFile = NULL; + inst->myCertFile = NULL; + inst->myPrivKeyFile = NULL; +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + inst->tlscfgcmd = NULL; +#endif + inst->maxDataSize = 0; + inst->flowCtlType = eFLOWCTL_LIGHT_DELAY; +#ifdef HAVE_RELPSRVSETOVERSIZEMODE + inst->oversizeMode = RELP_OVERSIZE_TRUNCATE; +#endif + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = inst; + } else { + loadModConf->tail->next = inst; + loadModConf->tail = inst; + } + + *pinst = inst; +finalize_it: + RETiRet; +} + + +/* function to generate an error message if the ruleset cannot be found */ +static inline void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + LogError(0, NO_ERRCODE, "imrelp[%s]: ruleset '%s' not found - " + "using default ruleset instead", + inst->pszBindPort, inst->pszBindRuleset); +} + + +/* This function is called when a new listener instance shall be added to + * the current config object via the legacy config system. It just shuffles + * all parameters to the listener in-memory instance. + * rgerhards, 2011-05-04 + */ +static rsRetVal addInstance(void __attribute__((unused)) *pVal, uchar *pNewVal) +{ + instanceConf_t *inst; + DEFiRet; + + CHKiRet(createInstance(&inst)); + + if(pNewVal == NULL || *pNewVal == '\0') { + LogError(0, NO_ERRCODE, "imrelp: port number must be specified, listener ignored"); + } + if((pNewVal == NULL) || (*pNewVal == '\0')) { + inst->pszBindPort = NULL; + } else { + CHKmalloc(inst->pszBindPort = ustrdup(pNewVal)); + } + if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) { + inst->pszBindRuleset = NULL; + } else { + CHKmalloc(inst->pszBindRuleset = ustrdup(cs.pszBindRuleset)); + } + inst->pBindRuleset = NULL; + + inst->bEnableLstn = -1; /* all ok, ready to start up */ +finalize_it: + free(pNewVal); + RETiRet; +} + + +static rsRetVal +addListner(modConfData_t __attribute__((unused)) *modConf, instanceConf_t *inst) +{ + relpSrv_t *pSrv; + int relpRet; + uchar statname[64]; + int i; + DEFiRet; + + if(!inst->bEnableLstn) { + DBGPRINTF("listener not started because it is disabled by config error\n"); + FINALIZE; + } + + if(pRelpEngine == NULL) { + CHKiRet(relpEngineConstruct(&pRelpEngine)); + CHKiRet(relpEngineSetDbgprint(pRelpEngine, (void (*)(char *, ...))imrelp_dbgprintf)); + CHKiRet(relpEngineSetFamily(pRelpEngine, glbl.GetDefPFFamily(runModConf->pConf))); + CHKiRet(relpEngineSetEnableCmd(pRelpEngine, (uchar*) "syslog", eRelpCmdState_Required)); + CHKiRet(relpEngineSetSyslogRcv2(pRelpEngine, onSyslogRcv)); + CHKiRet(relpEngineSetOnErr(pRelpEngine, onErr)); + CHKiRet(relpEngineSetOnGenericErr(pRelpEngine, onGenericErr)); + CHKiRet(relpEngineSetOnAuthErr(pRelpEngine, onAuthErr)); + if (!glbl.GetDisableDNS(runModConf->pConf)) { + CHKiRet(relpEngineSetDnsLookupMode(pRelpEngine, 1)); + } + #if defined(HAVE_RELPENGINESETTLSLIBBYNAME) + if(modConf->tlslib != NULL) { + if(relpEngineSetTLSLibByName(pRelpEngine, modConf->tlslib) != RELP_RET_OK) { + LogMsg(0, RS_RET_CONF_PARAM_INVLD, LOG_WARNING, + "imrelp: tlslib '%s' not accepted as valid by librelp - using default", + modConf->tlslib); + } + } + #endif + } + + CHKiRet(relpEngineListnerConstruct(pRelpEngine, &pSrv)); + CHKiRet(relpSrvSetMaxDataSize(pSrv, inst->maxDataSize)); + CHKiRet(relpSrvSetLstnPort(pSrv, inst->pszBindPort)); + #if defined(HAVE_RELPSRVSETLSTNADDR) + CHKiRet(relpSrvSetLstnAddr(pSrv, inst->pszBindAddr)); + #endif + +#ifdef HAVE_RELPSRVSETOVERSIZEMODE + CHKiRet(relpSrvSetOversizeMode(pSrv, inst->oversizeMode)); +#endif + inst->pszInputName = ustrdup((inst->pszInputName == NULL) ? UCHAR_CONSTANT("imrelp") : inst->pszInputName); + CHKiRet(prop.Construct(&inst->pInputName)); + CHKiRet(prop.SetString(inst->pInputName, inst->pszInputName, ustrlen(inst->pszInputName))); + CHKiRet(prop.ConstructFinalize(inst->pInputName)); + /* support statistics gathering */ + CHKiRet(statsobj.Construct(&(inst->data.stats))); + snprintf((char*)statname, sizeof(statname), "%s(%s)", + inst->pszInputName, inst->pszBindPort); + statname[sizeof(statname)-1] = '\0'; /* just to be on the save side... */ + CHKiRet(statsobj.SetName(inst->data.stats, statname)); + CHKiRet(statsobj.SetOrigin(inst->data.stats, (uchar*)"imrelp")); + STATSCOUNTER_INIT(inst->data.ctrSubmit, inst->data.mutCtrSubmit); + CHKiRet(statsobj.AddCounter(inst->data.stats, UCHAR_CONSTANT("submitted"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(inst->data.ctrSubmit))); + CHKiRet(statsobj.ConstructFinalize(inst->data.stats)); + /* end stats counters */ + relpSrvSetUsrPtr(pSrv, inst); + relpSrvSetKeepAlive(pSrv, inst->bKeepAlive, inst->iKeepAliveIntvl, + inst->iKeepAliveProbes, inst->iKeepAliveTime); + if(inst->bEnableTLS) { + relpRet = relpSrvEnableTLS2(pSrv); + if(relpRet == RELP_RET_ERR_NO_TLS) { + LogError(0, RS_RET_RELP_NO_TLS, + "imrelp: could not activate relp TLS, librelp " + "does not support it (most probably GnuTLS lib " + "is too old)!"); + ABORT_FINALIZE(RS_RET_RELP_NO_TLS); + } else if(relpRet == RELP_RET_ERR_NO_TLS_AUTH) { + LogError(0, RS_RET_RELP_NO_TLS_AUTH, + "imrelp: could not activate relp TLS with " + "authentication, librelp does not support it " + "(most probably GnuTLS lib is too old)! " + "Note: anonymous TLS is probably supported."); + ABORT_FINALIZE(RS_RET_RELP_NO_TLS_AUTH); + } else if(relpRet != RELP_RET_OK) { + LogError(0, RS_RET_RELP_ERR, + "imrelp: could not activate relp TLS, code %d", relpRet); + ABORT_FINALIZE(RS_RET_RELP_ERR); + } + if(inst->bEnableTLSZip) { + relpSrvEnableTLSZip2(pSrv); + } + if(inst->dhBits) { + relpSrvSetDHBits(pSrv, inst->dhBits); + } + relpSrvSetGnuTLSPriString(pSrv, (char*)inst->pristring); + if(relpSrvSetAuthMode(pSrv, (char*)inst->authmode) != RELP_RET_OK) { + LogError(0, RS_RET_RELP_ERR, + "imrelp: invalid auth mode '%s'", inst->authmode); + ABORT_FINALIZE(RS_RET_RELP_ERR); + } + if(relpSrvSetCACert(pSrv, (char*) inst->caCertFile) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + if(relpSrvSetOwnCert(pSrv, (char*) inst->myCertFile) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + if(relpSrvSetPrivKey(pSrv, (char*) inst->myPrivKeyFile) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + if (inst->tlscfgcmd != NULL) { + if(relpSrvSetTlsConfigCmd(pSrv, (char*) inst->tlscfgcmd) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + } +#endif + for(i = 0 ; i < inst->permittedPeers.nmemb ; ++i) { + relpSrvAddPermittedPeer(pSrv, (char*)inst->permittedPeers.name[i]); + } + } + relpRet = relpEngineListnerConstructFinalize(pRelpEngine, pSrv); + /* re-check error TLS error codes. librelp seems to emit them only + * after finalize in some cases... + */ + if(relpRet == RELP_RET_ERR_NO_TLS) { + LogError(0, RS_RET_RELP_NO_TLS, + "imrelp: could not activate relp TLS listener, librelp " + "does not support it (most probably GnuTLS lib " + "is too old)!"); + ABORT_FINALIZE(RS_RET_RELP_NO_TLS); + } else if(relpRet == RELP_RET_ERR_NO_TLS_AUTH) { + LogError(0, RS_RET_RELP_NO_TLS_AUTH, + "imrelp: could not activate relp TLS listener with " + "authentication, librelp does not support it " + "(most probably GnuTLS lib is too old)! " + "Note: anonymous TLS is probably supported."); + ABORT_FINALIZE(RS_RET_RELP_NO_TLS_AUTH); + } else if(relpRet != RELP_RET_OK) { + LogError(0, RS_RET_RELP_ERR, + "imrelp: could not activate relp listener, code %d", relpRet); + ABORT_FINALIZE(RS_RET_RELP_ERR); + } + + DBGPRINTF("imrelp: max data size %zd\n", inst->maxDataSize); + resetConfigVariables(NULL,NULL); + +finalize_it: + RETiRet; +} + + +BEGINnewInpInst + struct cnfparamvals *pvals; + instanceConf_t *inst = NULL; + int i,j; + FILE *fp; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imrelp)\n"); + + if((pvals = nvlstGetParams(lst, &inppblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("input param blk in imrelp:\n"); + cnfparamsPrint(&inppblk, pvals); + } + + CHKiRet(createInstance(&inst)); + + for(i = 0 ; i < inppblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(inppblk.descr[i].name, "port")) { + inst->pszBindPort = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "address")) { + #if defined(HAVE_RELPSRVSETLSTNADDR) + inst->pszBindAddr = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + #else + parser_errmsg("imrelp: librelp does not support input parameter 'address'; " + "it probably is too old (1.2.16 should be fine); ignoring setting now, " + "listening on all interfaces"); + #endif + } else if(!strcmp(inppblk.descr[i].name, "name")) { + inst->pszInputName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "maxdatasize")) { + inst->maxDataSize = (size_t) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "flowcontrol")) { + if(!es_strconstcmp(pvals[i].val.d.estr, "none")) { + inst->flowCtlType = eFLOWCTL_NO_DELAY; + } else if(!es_strconstcmp(pvals[i].val.d.estr, "light")) { + inst->flowCtlType = eFLOWCTL_LIGHT_DELAY; + } else if(!es_strconstcmp(pvals[i].val.d.estr, "full")) { + inst->flowCtlType = eFLOWCTL_FULL_DELAY; + } else { + const char *const mode = es_str2cstr(pvals[i].val.d.estr, NULL); + parser_errmsg("imrelp: wrong flowcontrol parameter " + "value '%s', using default: 'light'; possible " + "values: 'no', 'light', 'full'\n", mode); + free((void*)mode); + } + } else if(!strcmp(inppblk.descr[i].name, "oversizemode")) { +#ifdef HAVE_RELPSRVSETOVERSIZEMODE + char *mode = es_str2cstr(pvals[i].val.d.estr, NULL); + if(!strcmp(mode, "abort")) { + inst->oversizeMode = RELP_OVERSIZE_ABORT; + } else if(!strcmp(mode, "truncate")) { + inst->oversizeMode = RELP_OVERSIZE_TRUNCATE; + } else if(!strcmp(mode, "accept")) { + inst->oversizeMode = RELP_OVERSIZE_ACCEPT; + } else { + parser_errmsg("imrelp: wrong oversizeMode parameter " + "value %s, using default: truncate\n", mode); + inst->oversizeMode = RELP_OVERSIZE_TRUNCATE; + } +#else + parser_errmsg("imrelp: parameter oversizeMode is not available in " + "this relp version and is therefore disabled."); +#endif + } else if(!strcmp(inppblk.descr[i].name, "keepalive")) { + inst->bKeepAlive = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.probes")) { + inst->iKeepAliveProbes = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.time")) { + inst->iKeepAliveTime = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.interval")) { + inst->iKeepAliveIntvl = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "tls")) { + inst->bEnableTLS = (unsigned) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "tls.dhbits")) { + inst->dhBits = (unsigned) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "tls.prioritystring")) { + inst->pristring = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "tls.authmode")) { + inst->authmode = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "tls.compression")) { + inst->bEnableTLSZip = (unsigned) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "tls.cacert")) { + inst->caCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)inst->caCertFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + inst->caCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(inppblk.descr[i].name, "tls.mycert")) { + inst->myCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)inst->myCertFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + inst->myCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(inppblk.descr[i].name, "tls.myprivkey")) { + inst->myPrivKeyFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)inst->myPrivKeyFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + inst->myPrivKeyFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(inppblk.descr[i].name, "tls.tlscfgcmd")) { +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + inst->tlscfgcmd = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); +#else + parser_errmsg("imrelp: librelp does not support input parameter 'tls.tlscfgcmd'; " + "it probably is too old (1.5.0 or higher should be fine); ignoring setting now."); +#endif + } else if(!strcmp(inppblk.descr[i].name, "tls.permittedpeer")) { + inst->permittedPeers.nmemb = pvals[i].val.d.ar->nmemb; + CHKmalloc(inst->permittedPeers.name = + malloc(sizeof(uchar*) * inst->permittedPeers.nmemb)); + for(j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + inst->permittedPeers.name[j] = (uchar*)es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + } + } else { + dbgprintf("imrelp: program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + } + + if(inst->myCertFile != NULL && inst->myPrivKeyFile == NULL) { + LogError(0, RS_RET_ERR, "imrelp: certificate file given but no corresponding " + "private key file - this is invalid, listener cannot be started"); + ABORT_FINALIZE(RS_RET_ERR); + } + if(inst->myCertFile == NULL && inst->myPrivKeyFile != NULL) { + LogError(0, RS_RET_ERR, "imrelp: private key file given but no corresponding " + "certificate file - this is invalid, listener cannot be started"); + ABORT_FINALIZE(RS_RET_ERR); + } + + inst->bEnableLstn = -1; /* all ok, ready to start up */ + +finalize_it: +CODE_STD_FINALIZERnewInpInst + cnfparamvalsDestruct(pvals, &inppblk); + if(iRet != RS_RET_OK) { + if(inst != NULL) { + free(inst->myCertFile); + inst->myCertFile = NULL; + free(inst->myPrivKeyFile); + inst->myPrivKeyFile = NULL; + } + } +ENDnewInpInst + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->pszBindRuleset = NULL; + pModConf->tlslib = NULL; + /* init legacy config variables */ + cs.pszBindRuleset = NULL; + bLegacyCnfModGlobalsPermitted = 1; +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for imrelp:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "ruleset")) { + loadModConf->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "tls.tlslib")) { + #if defined(HAVE_RELPENGINESETTLSLIBBYNAME) + loadModConf->tlslib = es_str2cstr(pvals[i].val.d.estr, NULL); + #else + LogError(0, RS_RET_NOT_IMPLEMENTED, + "imrelp warning: parameter tls.tlslib ignored - librelp does not support " + "this API call. Using whatever librelp was compiled with."); + #endif + } else { + dbgprintf("imrelp: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + /* remove all of our legacy module handlers, as they can not used in addition + * the the new-style config method. + */ + bLegacyCnfModGlobalsPermitted = 0; +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(loadModConf->pszBindRuleset == NULL) { + if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) { + loadModConf->pszBindRuleset = NULL; + } else { + CHKmalloc(loadModConf->pszBindRuleset = ustrdup(cs.pszBindRuleset)); + } + } else { + if((cs.pszBindRuleset != NULL) && (cs.pszBindRuleset[0] != '\0')) { + LogError(0, RS_RET_DUP_PARAM, "imrelp: ruleset " + "set via legacy directive ignored"); + } + } +finalize_it: + free(cs.pszBindRuleset); + cs.pszBindRuleset = NULL; + loadModConf = NULL; /* done loading */ +ENDendCnfLoad + +BEGINcheckCnf + instanceConf_t *inst; + size_t maxMessageSize; +CODESTARTcheckCnf + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + if(inst->pszBindRuleset == NULL && pModConf->pszBindRuleset != NULL) { + CHKmalloc(inst->pszBindRuleset = ustrdup(pModConf->pszBindRuleset)); + } + std_checkRuleset(pModConf, inst); + + + if(inst->maxDataSize == 0) { + /* We set default value for maxDataSize here because + * otherwise the maxMessageSize isn't set. + */ + inst->maxDataSize = glbl.GetMaxLine(loadConf); + } + maxMessageSize = (size_t)glbl.GetMaxLine(loadConf); + if(inst->maxDataSize < maxMessageSize) { + LogError(0, RS_RET_INVALID_PARAMS, "error: " + "maxDataSize (%zu) is smaller than global parameter " + "maxMessageSize (%zu) - global parameter will be used.", + inst->maxDataSize, maxMessageSize); + inst->maxDataSize = maxMessageSize; + } + } + +finalize_it: +ENDcheckCnf + + +BEGINactivateCnfPrePrivDrop + instanceConf_t *inst; +CODESTARTactivateCnfPrePrivDrop + runModConf = pModConf; + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + addListner(pModConf, inst); + } + if(pRelpEngine == NULL) { + LogError(0, RS_RET_NO_LSTN_DEFINED, "imrelp: no RELP listener defined, module can not run."); + ABORT_FINALIZE(RS_RET_NO_RUN); + } +finalize_it: +ENDactivateCnfPrePrivDrop + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; + int i; +CODESTARTfreeCnf + for(inst = pModConf->root ; inst != NULL ; ) { + free(inst->pszBindPort); + if (inst->pszBindAddr != NULL) { + free(inst->pszBindAddr); + } + free(inst->pszBindRuleset); + free(inst->pszInputName); + free(inst->pristring); + free(inst->authmode); + for(i = 0 ; i < inst->permittedPeers.nmemb ; ++i) { + free(inst->permittedPeers.name[i]); + } + if(inst->bEnableLstn) { + prop.Destruct(&inst->pInputName); + statsobj.Destruct(&(inst->data.stats)); + } + del = inst; + inst = inst->next; + free(del); + } + free(pModConf->pszBindRuleset); +ENDfreeCnf + +/* This is used to terminate the plugin. Note that the signal handler blocks + * other activity on the thread. As such, it is safe to request the stop. When + * we terminate, relpEngine is called, and it's select() loop interrupted. But + * only *after this function is done*. So we do not have a race! + */ +static void +doSIGTTIN(int __attribute__((unused)) sig) +{ + const int bTerminate = ATOMIC_FETCH_32BIT(&bTerminateInputs, &mutTerminateInputs); + if(bTerminate && (pRelpEngine != NULL)) { + relpEngineSetStop(pRelpEngine); + } +} + + +/* This function is called to gather input. + */ +BEGINrunInput + sigset_t sigSet; + struct sigaction sigAct; +CODESTARTrunInput + /* we want to support non-cancel input termination. To do so, we must signal librelp + * when to stop. As we run on the same thread, we need to register as SIGTTIN handler, + * which will be used to put the terminating condition into librelp. + */ + sigfillset(&sigSet); + pthread_sigmask(SIG_BLOCK, &sigSet, NULL); + sigemptyset(&sigSet); + sigaddset(&sigSet, SIGTTIN); + pthread_sigmask(SIG_UNBLOCK, &sigSet, NULL); + memset(&sigAct, 0, sizeof (sigAct)); + sigemptyset(&sigAct.sa_mask); + sigAct.sa_handler = doSIGTTIN; + sigaction(SIGTTIN, &sigAct, NULL); + + iRet = relpEngineRun(pRelpEngine); +ENDrunInput + + +BEGINwillRun +CODESTARTwillRun +ENDwillRun + + +BEGINafterRun +CODESTARTafterRun + /* do cleanup here */ +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + struct sigaction newAct; + memset(&newAct, 0, sizeof (newAct)); + sigemptyset(&newAct.sa_mask); + newAct.sa_handler = SIG_IGN; + sigaction(SIGTTIN, &newAct, NULL); + + if(pRelpEngine != NULL) + iRet = relpEngineDestruct(&pRelpEngine); + + /* release objects we used */ + objRelease(statsobj, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); + objRelease(glbl, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(net, LM_NET_FILENAME); +ENDmodExit + + +static rsRetVal +resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + free(cs.pszBindRuleset); + cs.pszBindRuleset = NULL; + return RS_RET_OK; +} + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + pRelpEngine = NULL; + /* request objects we use */ + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(net, LM_NET_FILENAME)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + + #ifndef HAVE_RELPSRVSETOVERSIZEMODE + LogMsg(0, RS_RET_OK_WARN, LOG_WARNING, "imrelp: librelp too old, oversizemode " + "defaults to \"abort\""); + #endif + + /* register config file handlers */ + CHKiRet(regCfSysLineHdlr2((uchar*)"inputrelpserverbindruleset", 0, eCmdHdlrGetWord, + NULL, &cs.pszBindRuleset, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputrelpserverrun", 0, eCmdHdlrGetWord, + addInstance, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit diff --git a/plugins/imsolaris/Makefile.am b/plugins/imsolaris/Makefile.am new file mode 100644 index 0000000..b4ee1c2 --- /dev/null +++ b/plugins/imsolaris/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = imsolaris.la + +imsolaris_la_SOURCES = imsolaris.c sun_cddl.c sun_cddl.h imsolaris.h +imsolaris_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +imsolaris_la_LDFLAGS = -module -avoid-version +imsolaris_la_LIBADD = -ldoor -lpthread diff --git a/plugins/imsolaris/Makefile.in b/plugins/imsolaris/Makefile.in new file mode 100644 index 0000000..e47a50c --- /dev/null +++ b/plugins/imsolaris/Makefile.in @@ -0,0 +1,808 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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\ + distclean-generic distclean-libtool distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/imsolaris/imsolaris.c b/plugins/imsolaris/imsolaris.c new file mode 100644 index 0000000..eff8ffb --- /dev/null +++ b/plugins/imsolaris/imsolaris.c @@ -0,0 +1,437 @@ +/* imsolaris.c + * This input module is used to gather local log data under Solaris. This + * includes messages from local applications AS WELL AS the kernel log. + * I first considered to make all of this available via imklog, but that + * did not lock appropriately on second thought. So I created this module + * that does anything for local message recption. + * + * This module is not meant to be used on plaforms other than Solaris. As + * such, trying to compile it elswhere will probably fail with all sorts + * of errors. + * + * Some notes on the Solaris syslog mechanism: + * Both system (kernel) and application log messages are provided via + * a single message stream. + * + * Solaris checks if the syslogd is running. If so, syslog() emits messages + * to the log socket, only. Otherwise, it emits messages to the console. + * It is possible to gather these console messages as well. However, then + * we clutter the console. + * Solaris does this "syslogd alive check" in a somewhat unexpected way + * (at least unexpected for me): it uses the so-called "door" mechanism, a + * fast RPC facility. I first thought that the door API was used to submit + * the actual syslog messages. But this is not the case. Instead, a door + * call is done, and the server process inside rsyslog simply does NOTHING + * but return. All that Solaris sylsogd() is interested in is if the door + * server (we) responds and thus can be considered alive. The actual message + * is then submitted via the usual stream. I have to admit I do not + * understand why the message itself is not passed via this high-performance + * API. But anyhow, that's nothing I can change, so the most important thing + * is to note how Solaris does this thing ;) + * The syslog() library call checks syslogd state for *each* call (what a + * waste of time...) and decides each time if the message should go to the + * console or not. According to OpenSolaris sources, it looks like there is + * message loss potential when the door file is created before all data has + * been pulled from the stream. While I have to admit that I do not fully + * understand that problem, I will follow the original code advise and do + * one complete pull cycle on the log socket (until it has no further data + * available) and only thereafter create the door file and start the "regular" + * pull cycle. As of my understanding, there is a minimal race between the + * point where the intial pull cycle has ended and the door file is created, + * but that race is also present in OpenSolaris syslogd code, so it should + * not matter that much (plus, I do not know how to avoid it...) + * + * File begun on 2010-04-15 by RGerhards + * + * Copyright 2010 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Rsyslog is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Rsyslog is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Rsyslog. If not, see <http://www.gnu.org/licenses/>. + * + * A copy of the GPL can be found in the file "COPYING" in this distribution. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <assert.h> +#include <string.h> +#include <stropts.h> +#include <sys/strlog.h> +#include <errno.h> +#include "dirty.h" +#include "cfsysline.h" +#include "unicode-helper.h" +#include "module-template.h" +#include "srUtils.h" +#include "errmsg.h" +#include "net.h" +#include "glbl.h" +#include "msg.h" +#include "prop.h" +#include "sun_cddl.h" +#include "datetime.h" +#include "rsconf.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imsolaris") + +/* defines */ +#define PATH_LOG "/dev/log" + + +/* Module static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(prop) +DEFobjCurrIf(datetime) + + +/* config settings */ +struct modConfData_s { + EMPTY_STRUCT; +}; + +static prop_t *pInputName = NULL; /* our inputName currently is always "imuxsock", and this will hold it */ +static char *LogName = NULL; /* the log socket name TODO: make configurable! */ + + +/* a function to replace the sun logerror() function. + * It generates an error message from the supplied string. The main + * reason for not calling logError directly is that sun_cddl.c does not + * know or has acces to rsyslog objects (namely errmsg) -- and we do not + * want to do this effort. -- rgerhards, 2010-04-19 + */ +void +imsolaris_logerror(int err, char *errStr) +{ + LogError(err, RS_RET_ERR_DOOR, "%s", errStr); +} + + +/* we try to recover a failed file by closing and re-opening + * it. We loop until the re-open works, but wait between each + * failure. If the open succeeds, we assume all is well. If it is + * not, we will run into the retry process with the next + * iteration. + * rgerhards, 2010-04-19 + */ +static void +tryRecover(void) +{ + int tryNum = 1; + int waitsecs; + int waitusecs; + rsRetVal iRet; + + close(sun_Pfd.fd); + sun_Pfd.fd = -1; + + while(1) { /* loop broken inside */ + iRet = sun_openklog((LogName == NULL) ? PATH_LOG : LogName); + if(iRet == RS_RET_OK) { + if(tryNum > 1) { + LogError(0, iRet, "failure on system log socket recovered."); + } + break; + } + /* failure, so sleep a bit. We wait try*10 ms, with a max of 15 seconds */ + if(tryNum == 1) { + LogError(0, iRet, "failure on system log socket, trying to recover..."); + } + waitusecs = tryNum * 10000; + waitsecs = waitusecs / 1000000; + DBGPRINTF("imsolaris: try %d to recover system log socket in %d.%d seconds\n", + tryNum, waitsecs, waitusecs); + if(waitsecs > 15) { + waitsecs = 15; + waitusecs = 0; + } else { + waitusecs = waitusecs % 1000000; + } + srSleep(waitsecs, waitusecs); + ++tryNum; + } +} + + +/* This function receives data from a socket indicated to be ready + * to receive and submits the message received for processing. + * rgerhards, 2007-12-20 + * Interface changed so that this function is passed the array index + * of the socket which is to be processed. This eases access to the + * growing number of properties. -- rgerhards, 2008-08-01 + */ +static rsRetVal +readLog(int fd, uchar *pRcv, int iMaxLine) +{ + DEFiRet; + struct strbuf data; + struct strbuf ctl; + struct log_ctl hdr; + struct timeval tim; + int flags; + smsg_t *pMsg; + int ret; + char errStr[1024]; + + data.buf = (char*)pRcv; + data.maxlen = iMaxLine; + ctl.maxlen = sizeof (struct log_ctl); + ctl.buf = (caddr_t)&hdr; + flags = 0; + ret = getmsg(fd, &ctl, &data, &flags); + if(ret < 0) { + if(errno == EINTR) { + FINALIZE; + } else { + int en = errno; + rs_strerror_r(errno, errStr, sizeof(errStr)); + DBGPRINTF("imsolaris: stream input error on fd %d: %s.\n", fd, errStr); + LogError(en, NO_ERRCODE, "imsolaris: stream input error: %s", errStr); + tryRecover(); + } + } else { + DBGPRINTF("imsolaris: message from log stream %d: %s\n", fd, pRcv); + pRcv[data.len] = '\0'; /* make sure it is a valid C-String */ + CHKiRet(msgConstruct(&pMsg)); + MsgSetInputName(pMsg, pInputName); + MsgSetRawMsg(pMsg, (char*)pRcv, strlen((char*)pRcv)); + MsgSetHOSTNAME(pMsg, glbl.GetLocalHostName(), ustrlen(glbl.GetLocalHostName())); + msgSetPRI(pMsg, hdr.pri); + pMsg->msgFlags = NEEDS_PARSING | NO_PRI_IN_RAW | IGNDATE; + + /* Construct timestamp from msg ctl struct */ + tim.tv_usec = 0; + tim.tv_sec = hdr.ttime; + datetime.timeval2syslogTime(&tim, &pMsg->tRcvdAt, TIME_IN_LOCALTIME); + CHKiRet(submitMsg(pMsg)); + } + +finalize_it: + RETiRet; +} + + +/* once the system is fully initialized, we wait for new messages. + * We may think about replacing this with a read-loop, thus saving + * us the overhead of the poll. + * The timeout variable is the timeout to use for poll. During startup, + * it should be set to 0 (non-blocking) and later to -1 (infinit, blocking). + * This mimics the (strange) behaviour of the original syslogd. + * rgerhards, 2010-04-19 + */ +static rsRetVal +getMsgs(thrdInfo_t *pThrd, int timeout) +{ + DEFiRet; + int nfds; + int iMaxLine; + uchar *pRcv = NULL; /* receive buffer */ + uchar bufRcv[4096+1]; + char errStr[1024]; + + iMaxLine = glbl.GetMaxLine(runConf); + + /* we optimize performance: if iMaxLine is below 4K (which it is in almost all + * cases, we use a fixed buffer on the stack. Only if it is higher, heap memory + * is used. We could use alloca() to achive a similar aspect, but there are so + * many issues with alloca() that I do not want to take that route. + * rgerhards, 2008-09-02 + */ + if((size_t) iMaxLine < sizeof(bufRcv) - 1) { + pRcv = bufRcv; + } else { + CHKmalloc(pRcv = (uchar*) malloc(iMaxLine + 1)); + } + + while(pThrd->bShallStop != RSTRUE) { + DBGPRINTF("imsolaris: waiting for next message (timeout %d)...\n", timeout); + if(timeout == 0) { + nfds = poll(&sun_Pfd, 1, timeout); /* wait without timeout */ + + if(pThrd->bShallStop == RSTRUE) { + break; + } + + if(nfds == 0) { + if(timeout == 0) { + DBGPRINTF("imsolaris: no more messages, getMsgs() terminates\n"); + FINALIZE; + } else { + continue; + } + } + + if(nfds < 0) { + if(errno != EINTR) { + int en = errno; + rs_strerror_r(en, errStr, sizeof(errStr)); + DBGPRINTF("imsolaris: poll error: %d = %s.\n", errno, errStr); + LogError(en, NO_ERRCODE, "imsolaris: poll error: %s", + errStr); + } + continue; + } + if(sun_Pfd.revents & POLLIN) { + readLog(sun_Pfd.fd, pRcv, iMaxLine); + } else if(sun_Pfd.revents & (POLLNVAL|POLLHUP|POLLERR)) { + tryRecover(); + } + } else { + /* if we have an infinite wait, we do not use poll at all + * I'd consider this a waste of time. However, I do not totally + * remove the code, as it may be useful if we decide at some + * point to provide a capability to support multiple input streams + * at once (this may be useful for a jail). In that case, the poll() + * loop would be needed, and so it doesn't make much sense to change + * the code to not support it. -- rgerhards, 2010-04-20 + */ + readLog(sun_Pfd.fd, pRcv, iMaxLine); + } + + } + +finalize_it: + if(pRcv != NULL && (size_t) iMaxLine >= sizeof(bufRcv) - 1) + free(pRcv); + + RETiRet; +} + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +/* This function is called to gather input. */ +BEGINrunInput +CODESTARTrunInput + /* this is an endless loop - it is terminated when the thread is + * signalled to do so. This, however, is handled by the framework, + * right into the sleep below. + */ + + DBGPRINTF("imsolaris: doing startup poll before openeing door()\n"); + CHKiRet(getMsgs(pThrd, 0)); + + /* note: sun's syslogd code claims that the door should only + * be opened when the log stream has been polled. So file header + * comment of this file for more details. + */ + sun_open_door(); + DBGPRINTF("imsolaris: starting regular poll loop\n"); + iRet = getMsgs(pThrd, -1); /* this is the primary poll loop, infinite timeout */ + + DBGPRINTF("imsolaris: terminating (bShallStop=%d)\n", pThrd->bShallStop); +finalize_it: + RETiRet; +ENDrunInput + + +BEGINwillRun +CODESTARTwillRun + /* we need to create the inputName property (only once during our lifetime) */ + CHKiRet(prop.Construct(&pInputName)); + CHKiRet(prop.SetString(pInputName, UCHAR_CONSTANT("imsolaris"), sizeof("imsolaris") - 1)); + CHKiRet(prop.ConstructFinalize(pInputName)); + + iRet = sun_openklog((LogName == NULL) ? PATH_LOG : LogName); + if(iRet != RS_RET_OK) { + LogError(0, iRet, "error opening system log socket"); + } +finalize_it: +ENDwillRun + + +BEGINafterRun +CODESTARTafterRun + /* do cleanup here */ + if(pInputName != NULL) + prop.Destruct(&pInputName); + free(LogName); +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + sun_delete_doorfiles(); + objRelease(glbl, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); +ENDmodExit + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, + void __attribute__((unused)) *pVal) +{ + return RS_RET_OK; +} + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + + DBGPRINTF("imsolaris version %s initializing\n", PACKAGE_VERSION); + + /* register config file handlers */ + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imsolarislogsocketname", 0, eCmdHdlrGetWord, + NULL, &LogName, STD_LOADABLE_MODULE_ID)); +ENDmodInit +/* vim:set ai: + */ diff --git a/plugins/imsolaris/imsolaris.h b/plugins/imsolaris/imsolaris.h new file mode 100644 index 0000000..e73380f --- /dev/null +++ b/plugins/imsolaris/imsolaris.h @@ -0,0 +1,2 @@ +rsRetVal solaris_readLog(int fd); +void imsolaris_logerror(int err, char *errStr); diff --git a/plugins/imsolaris/sun_cddl.c b/plugins/imsolaris/sun_cddl.c new file mode 100644 index 0000000..6bdc31c --- /dev/null +++ b/plugins/imsolaris/sun_cddl.c @@ -0,0 +1,420 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* Portions Copyright 2010-2014 by Rainer Gerhards and Adiscon + */ +/* + * Copyright 2008 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* + * Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T + * All Rights Reserved + */ + +/* + * University Copyright- Copyright (c) 1982, 1986, 1988 + * The Regents of the University of California + * All Rights Reserved + * + * University Acknowledgment- Portions of this document are derived from + * software developed by the University of California, Berkeley, and its + * contributors. + */ +#include "config.h" +#include <unistd.h> +#include <errno.h> +#include <sys/types.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> +#include <pthread.h> +#include <fcntl.h> +#include <stropts.h> +#include <assert.h> + +#include <sys/param.h> +#include <sys/strlog.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/poll.h> +#include <door.h> +#include <sys/door.h> + +#include "rsyslog.h" +#include "srUtils.h" +#include "debug.h" +#include "imsolaris.h" + +#define DOORFILE "/var/run/syslog_door" +#define RELATIVE_DOORFILE "../var/run/syslog_door" +#define OLD_DOORFILE "/etc/.syslog_door" + +/* Buffer to allocate for error messages: */ +#define ERRMSG_LEN 1024 + +/* Max number of door server threads for syslogd. Since door is used + * to check the health of syslogd, we don't need large number of + * server threads. + */ +#define MAX_DOOR_SERVER_THR 3 + + +struct pollfd sun_Pfd; /* Pollfd for local log device */ + +static int DoorFd = -1; +static int DoorCreated = 0; +static char *DoorFileName = DOORFILE; + +/* for managing door server threads */ +static pthread_mutex_t door_server_cnt_lock = PTHREAD_MUTEX_INITIALIZER; +static uint_t door_server_cnt = 0; +static pthread_attr_t door_thr_attr; + +/* the 'server' function that we export via the door. It does + * nothing but return. + */ +/*ARGSUSED*/ +static void +server( void __attribute__((unused)) *cookie, + char __attribute__((unused)) *argp, + size_t __attribute__((unused)) arg_size, + door_desc_t __attribute__((unused)) *dp, + __attribute__((unused)) uint_t n ) +{ + (void) door_return(NULL, 0, NULL, 0); + /* NOTREACHED */ +} + +/*ARGSUSED*/ +static void * +create_door_thr(void __attribute__((unused)) *arg) +{ + (void) pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL); + (void) door_return(NULL, 0, NULL, 0); + + /* If there is an error in door_return(), it will return here and + * the thread will exit. Hence we need to decrement door_server_cnt. + */ + (void) pthread_mutex_lock(&door_server_cnt_lock); + door_server_cnt--; + (void) pthread_mutex_unlock(&door_server_cnt_lock); + return (NULL); +} + +/* + * Manage door server thread pool. + */ +/*ARGSUSED*/ +static void +door_server_pool(door_info_t __attribute__((unused)) *dip) +{ + (void) pthread_mutex_lock(&door_server_cnt_lock); + if (door_server_cnt <= MAX_DOOR_SERVER_THR && + pthread_create(NULL, &door_thr_attr, create_door_thr, NULL) == 0) { + door_server_cnt++; + (void) pthread_mutex_unlock(&door_server_cnt_lock); + return; + } + + (void) pthread_mutex_unlock(&door_server_cnt_lock); +} + +void +sun_delete_doorfiles(void) +{ + struct stat sb; + int err; + char line[ERRMSG_LEN+1]; + + if (lstat(DoorFileName, &sb) == 0 && !S_ISDIR(sb.st_mode)) { + if (unlink(DoorFileName) < 0) { + err = errno; + (void) snprintf(line, sizeof (line), + "unlink() of %s failed - fatal", DoorFileName); + imsolaris_logerror(err, line); + DBGPRINTF("delete_doorfiles: error: %s, " + "errno=%d\n", line, err); + exit(1); + } + + DBGPRINTF("delete_doorfiles: deleted %s\n", DoorFileName); + } + + if (strcmp(DoorFileName, DOORFILE) == 0) { + if (lstat(OLD_DOORFILE, &sb) == 0 && !S_ISDIR(sb.st_mode)) { + if (unlink(OLD_DOORFILE) < 0) { + err = errno; + (void) snprintf(line, sizeof (line), + "unlink() of %s failed", OLD_DOORFILE); + DBGPRINTF("delete_doorfiles: %s\n", line); + + if (err != EROFS) { + errno = err; + (void) strlcat(line, " - fatal", + sizeof (line)); + imsolaris_logerror(err, line); + DBGPRINTF("delete_doorfiles: " + "error: %s, errno=%d\n", + line, err); + exit(1); + } + + DBGPRINTF("delete_doorfiles: unlink() " + "failure OK on RO file system\n"); + } + + DBGPRINTF("delete_doorfiles: deleted %s\n", + OLD_DOORFILE); + } + } + + if (DoorFd != -1) { + (void) door_revoke(DoorFd); + } + + DBGPRINTF("delete_doorfiles: revoked door: DoorFd=%d\n", + DoorFd); +} + + +/* Create the door file. If the filesystem + * containing /etc is writable, create symlinks /etc/.syslog_door + * to them. On systems that do not support /var/run, create + * /etc/.syslog_door directly. + */ +void +sun_open_door(void) +{ + struct stat buf; + door_info_t info; + char line[ERRMSG_LEN+1]; + int err; + + /* first see if another instance of imsolaris OR another + * syslogd is running by trying a door call - if it succeeds, + * there is already one active. + */ + + if (!DoorCreated) { + int door; + + if ((door = open(DoorFileName, O_RDONLY)) >= 0) { + DBGPRINTF("open_door: %s opened " + "successfully\n", DoorFileName); + + if (door_info(door, &info) >= 0) { + DBGPRINTF("open_door: " + "door_info:info.di_target = %ld\n", + info.di_target); + + if (info.di_target > 0) { + (void) sprintf(line, "syslogd pid %ld" + " already running. Cannot " + "start another syslogd pid %ld", + info.di_target, getpid()); + DBGPRINTF("open_door: error: " + "%s\n", line); + imsolaris_logerror(0, line); + exit(1); + } + } + + (void) close(door); + } else { + if (lstat(DoorFileName, &buf) < 0) { + err = errno; + + DBGPRINTF("open_door: lstat() of %s " + "failed, errno=%d\n", + DoorFileName, err); + + if ((door = creat(DoorFileName, 0644)) < 0) { + err = errno; + (void) snprintf(line, sizeof (line), + "creat() of %s failed - fatal", + DoorFileName); + DBGPRINTF("open_door: error: %s, " + "errno=%d\n", line, + err); + imsolaris_logerror(err, line); + sun_delete_doorfiles(); + exit(1); + } + + (void) fchmod(door, + S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH); + + DBGPRINTF("open_door: creat() of %s " + "succeeded\n", + DoorFileName); + + (void) close(door); + } + } + + if (strcmp(DoorFileName, DOORFILE) == 0) { + if (lstat(OLD_DOORFILE, &buf) == 0) { + DBGPRINTF("open_door: lstat() of %s " + "succeeded\n", OLD_DOORFILE); + + if (S_ISDIR(buf.st_mode)) { + (void) snprintf(line, sizeof (line), + "%s is a directory - fatal", + OLD_DOORFILE); + DBGPRINTF("open_door: error: " + "%s\n", line); + imsolaris_logerror(0, line); + sun_delete_doorfiles(); + exit(1); + } + + DBGPRINTF("open_door: %s is not a " + "directory\n", OLD_DOORFILE); + if (unlink(OLD_DOORFILE) < 0) { + err = errno; + (void) snprintf(line, sizeof (line), + "unlink() of %s failed", + OLD_DOORFILE); + DBGPRINTF("open_door: %s\n", + line); + + if (err != EROFS) { + DBGPRINTF("open_door: " + "error: %s, " + "errno=%d\n", + line, err); + (void) strcat(line, " - fatal"); + imsolaris_logerror(err, line); + sun_delete_doorfiles(); + exit(1); + } + + DBGPRINTF("open_door: unlink " + "failure OK on RO file " + "system\n"); + } + } else { + DBGPRINTF("open_door: file %s doesn't " + "exist\n", OLD_DOORFILE); + } + + if (symlink(RELATIVE_DOORFILE, OLD_DOORFILE) < 0) { + err = errno; + (void) snprintf(line, sizeof (line), + "symlink %s -> %s failed", OLD_DOORFILE, + RELATIVE_DOORFILE); + DBGPRINTF("open_door: %s\n", + line); + + if (err != EROFS) { + DBGPRINTF("open_door: error: %s, " + "errno=%d\n", line, + err); + (void) strcat(line, " - fatal"); + imsolaris_logerror(err, line); + sun_delete_doorfiles(); + exit(1); + } + + DBGPRINTF("open_door: symlink failure OK " + "on RO file system\n"); + } else { + DBGPRINTF("open_door: symlink %s -> %s " + "succeeded\n", + OLD_DOORFILE, RELATIVE_DOORFILE); + } + } + + if ((DoorFd = door_create(server, 0, + DOOR_REFUSE_DESC)) < 0) { + //???? DOOR_NO_CANEL requires newer libs??? DOOR_REFUSE_DESC | DOOR_NO_CANCEL)) < 0) { + err = errno; + (void) sprintf(line, "door_create() failed - fatal"); + DBGPRINTF("open_door: error: %s, errno=%d\n", + line, err); + imsolaris_logerror(err, line); + sun_delete_doorfiles(); + exit(1); + } + //???? (void) door_setparam(DoorFd, DOOR_PARAM_DATA_MAX, 0); + DBGPRINTF("open_door: door_create() succeeded, " + "DoorFd=%d\n", DoorFd); + + DoorCreated = 1; + } + + (void) fdetach(DoorFileName); /* just in case... */ + + (void) door_server_create(door_server_pool); + + if (fattach(DoorFd, DoorFileName) < 0) { + err = errno; + (void) snprintf(line, sizeof (line), "fattach() of fd" + " %d to %s failed - fatal", DoorFd, DoorFileName); + DBGPRINTF("open_door: error: %s, errno=%d\n", + line, err); + imsolaris_logerror(err, line); + sun_delete_doorfiles(); + exit(1); + } + + DBGPRINTF("open_door: attached server() to %s\n", + DoorFileName); + +} + + +/* Attempts to open the local log device + * and return a file descriptor. + */ +rsRetVal +sun_openklog(char *name) +{ + DEFiRet; + int fd; + struct strioctl str; + char errBuf[1024]; + + if((fd = open(name, O_RDONLY)) < 0) { + rs_strerror_r(errno, errBuf, sizeof(errBuf)); + DBGPRINTF("imsolaris:openklog: cannot open %s: %s\n", + name, errBuf); + ABORT_FINALIZE(RS_RET_ERR_OPEN_KLOG); + } + str.ic_cmd = I_CONSLOG; + str.ic_timout = 0; + str.ic_len = 0; + str.ic_dp = NULL; + if (ioctl(fd, I_STR, &str) < 0) { + rs_strerror_r(errno, errBuf, sizeof(errBuf)); + DBGPRINTF("imsolaris:openklog: cannot register to log " + "console messages: %s\n", errBuf); + ABORT_FINALIZE(RS_RET_ERR_AQ_CONLOG); + } + sun_Pfd.fd = fd; + sun_Pfd.events = POLLIN; + DBGPRINTF("imsolaris/openklog: opened '%s' as fd %d.\n", name, fd); + +finalize_it: + RETiRet; +} diff --git a/plugins/imsolaris/sun_cddl.h b/plugins/imsolaris/sun_cddl.h new file mode 100644 index 0000000..42e4b79 --- /dev/null +++ b/plugins/imsolaris/sun_cddl.h @@ -0,0 +1,7 @@ +rsRetVal sun_openklog(char *name); +void prepare_sys_poll(void); +void sun_sys_poll(void); +void sun_open_door(void); +void sun_delete_doorfiles(void); + +extern struct pollfd sun_Pfd; /* Pollfd for local log device */ diff --git a/plugins/imtcp/Makefile.am b/plugins/imtcp/Makefile.am new file mode 100644 index 0000000..f2ab10f --- /dev/null +++ b/plugins/imtcp/Makefile.am @@ -0,0 +1,11 @@ +pkglib_LTLIBRARIES = imtcp.la + +imtcp_la_SOURCES = imtcp.c +imtcp_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +imtcp_la_LDFLAGS = -module -avoid-version +imtcp_la_LIBADD = + +if ENABLE_LIBLOGGING_STDLOG +imtcp_la_CPPFLAGS += $(LIBLOGGING_STDLOG_CFLAGS) +imtcp_la_LDFLAGS += $(LIBLOGGING_STDLOG_LIBS) +endif diff --git a/plugins/imtcp/Makefile.in b/plugins/imtcp/Makefile.in new file mode 100644 index 0000000..b3aaedc --- /dev/null +++ b/plugins/imtcp/Makefile.in @@ -0,0 +1,799 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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+installcheck-am: + +maintainer-clean: maintainer-clean-am + -rm -f ./$(DEPDIR)/imtcp_la-imtcp.Plo + -rm -f Makefile +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-pkglibLTLIBRARIES + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \ + clean-generic clean-libtool clean-pkglibLTLIBRARIES \ + cscopelist-am ctags ctags-am distclean distclean-compile \ + distclean-generic distclean-libtool distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/imtcp/imtcp.c b/plugins/imtcp/imtcp.c new file mode 100644 index 0000000..0c31c93 --- /dev/null +++ b/plugins/imtcp/imtcp.c @@ -0,0 +1,1192 @@ +/* imtcp.c + * This is the implementation of the TCP input module. + * + * File begun on 2007-12-21 by RGerhards (extracted from syslogd.c, + * which at the time of the rsyslog fork was BSD-licensed) + * + * Copyright 2007-2022 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/* This note shall explain the calling sequence while we do not have + * have full RainerScript support for (TLS) sender authentication: + * + * imtcp --> tcpsrv --> netstrms (this sequence stored pPermPeers in netstrms class) + * then a callback (doOpenLstnSocks) into imtcp happens, which in turn calls + * into tcpsrv.create_tcp_socket(), + * which calls into netstrm.LstnInit(), which receives a pointer to netstrms obj + * which calls into the driver function LstnInit (again, netstrms obj passed) + * which finally calls back into netstrms obj's get functions to obtain the auth + * parameters and then applies them to the driver object instance + * + * rgerhards, 2008-05-19 + */ +#include "config.h" +#include <stdlib.h> +#include <assert.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <stdarg.h> +#include <ctype.h> +#include <netinet/in.h> +#include <netdb.h> +#include <signal.h> +#include <sys/types.h> +#include <sys/socket.h> +#if HAVE_FCNTL_H +#include <fcntl.h> +#endif +#include "rsyslog.h" +#include "dirty.h" +#include "cfsysline.h" +#include "module-template.h" +#include "unicode-helper.h" +#include "net.h" +#include "netstrm.h" +#include "errmsg.h" +#include "tcpsrv.h" +#include "ruleset.h" +#include "rainerscript.h" +#include "net.h" +#include "parserif.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imtcp") + +/* static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(tcpsrv) +DEFobjCurrIf(tcps_sess) +DEFobjCurrIf(net) +DEFobjCurrIf(netstrm) +DEFobjCurrIf(ruleset) + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + +/* Module static data */ +typedef struct tcpsrv_etry_s { + tcpsrv_t *tcpsrv; + pthread_t tid; /* the worker's thread ID */ + struct tcpsrv_etry_s *next; +} tcpsrv_etry_t; +static tcpsrv_etry_t *tcpsrv_root = NULL; +static int n_tcpsrv = 0; + +static permittedPeers_t *pPermPeersRoot = NULL; + +#define FRAMING_UNSET -1 + +/* config settings */ +static struct configSettings_s { + int iTCPSessMax; + int iTCPLstnMax; + int bSuppOctetFram; + int iStrmDrvrMode; + int bKeepAlive; + int iKeepAliveIntvl; + int iKeepAliveProbes; + int iKeepAliveTime; + int bEmitMsgOnClose; + int bEmitMsgOnOpen; + int iAddtlFrameDelim; + int maxFrameSize; + int bDisableLFDelim; + int discardTruncatedMsg; + int bUseFlowControl; + int bPreserveCase; + uchar *gnutlsPriorityString; + uchar *pszStrmDrvrAuthMode; + uchar *pszStrmDrvrPermitExpiredCerts; + uchar *pszInputName; + uchar *pszBindRuleset; + uchar *lstnIP; /* which IP we should listen on? */ + uchar *lstnPortFile; +} cs; + +struct instanceConf_s { + int iTCPSessMax; + int iTCPLstnMax; + tcpLstnParams_t *cnf_params; /**< listener config parameters */ + uchar *pszBindRuleset; /* name of ruleset to bind to */ + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + uchar *pszInputName; /* value for inputname property, NULL is OK and handled by core engine */ + uchar *dfltTZ; + sbool bSPFramingFix; + unsigned int ratelimitInterval; + unsigned int ratelimitBurst; + int iAddtlFrameDelim; /* addtl frame delimiter, e.g. for netscreen, default none */ + int maxFrameSize; + int bUseFlowControl; + int bDisableLFDelim; + int discardTruncatedMsg; + int bEmitMsgOnClose; + int bEmitMsgOnOpen; + int bPreserveCase; + uchar *pszStrmDrvrName; /* stream driver to use */ + int iStrmDrvrMode; + uchar *pszStrmDrvrAuthMode; + uchar *pszStrmDrvrPermitExpiredCerts; + uchar *pszStrmDrvrCAFile; + uchar *pszStrmDrvrCRLFile; + uchar *pszStrmDrvrKeyFile; + uchar *pszStrmDrvrCertFile; + permittedPeers_t *pPermPeersRoot; + uchar *gnutlsPriorityString; + int iStrmDrvrExtendedCertCheck; + int iStrmDrvrSANPreference; + int iStrmTlsVerifyDepth; + int bKeepAlive; + int iKeepAliveIntvl; + int iKeepAliveProbes; + int iKeepAliveTime; + struct instanceConf_s *next; +}; + + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + instanceConf_t *root, *tail; + int iTCPSessMax; /* max number of sessions */ + int iTCPLstnMax; /* max number of sessions */ + int iStrmDrvrMode; /* mode for stream driver, driver-dependent (0 mostly means plain tcp) */ + int iStrmDrvrExtendedCertCheck; /* verify also purpose OID in certificate extended field */ + int iStrmDrvrSANPreference; /* ignore CN when any SAN set */ + int iStrmTlsVerifyDepth; /**< Verify Depth for certificate chains */ + int iAddtlFrameDelim; /* addtl frame delimiter, e.g. for netscreen, default none */ + int maxFrameSize; + int bSuppOctetFram; + sbool bDisableLFDelim; /* disable standard LF delimiter */ + sbool discardTruncatedMsg; + sbool bUseFlowControl; /* use flow control, what means indicate ourselfs a "light delayable" */ + sbool bKeepAlive; + int iKeepAliveIntvl; + int iKeepAliveProbes; + int iKeepAliveTime; + sbool bEmitMsgOnClose; /* emit an informational message on close by remote peer */ + sbool bEmitMsgOnOpen; /* emit an informational message on close by remote peer */ + uchar *gnutlsPriorityString; + uchar *pszStrmDrvrName; /* stream driver to use */ + uchar *pszStrmDrvrAuthMode; /* authentication mode to use */ + uchar *pszStrmDrvrPermitExpiredCerts; /* control how to handly expired certificates */ + uchar *pszStrmDrvrCAFile; + uchar *pszStrmDrvrCRLFile; + uchar *pszStrmDrvrKeyFile; + uchar *pszStrmDrvrCertFile; + permittedPeers_t *pPermPeersRoot; + sbool configSetViaV2Method; + sbool bPreserveCase; /* preserve case of fromhost; true by default */ +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */ + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "flowcontrol", eCmdHdlrBinary, 0 }, + { "disablelfdelimiter", eCmdHdlrBinary, 0 }, + { "discardtruncatedmsg", eCmdHdlrBinary, 0 }, + { "octetcountedframing", eCmdHdlrBinary, 0 }, + { "notifyonconnectionclose", eCmdHdlrBinary, 0 }, + { "notifyonconnectionopen", eCmdHdlrBinary, 0 }, + { "addtlframedelimiter", eCmdHdlrNonNegInt, 0 }, + { "maxframesize", eCmdHdlrInt, 0 }, + { "maxsessions", eCmdHdlrPositiveInt, 0 }, + { "maxlistners", eCmdHdlrPositiveInt, 0 }, + { "maxlisteners", eCmdHdlrPositiveInt, 0 }, + { "streamdriver.mode", eCmdHdlrNonNegInt, 0 }, + { "streamdriver.authmode", eCmdHdlrString, 0 }, + { "streamdriver.permitexpiredcerts", eCmdHdlrString, 0 }, + { "streamdriver.name", eCmdHdlrString, 0 }, + { "streamdriver.CheckExtendedKeyPurpose", eCmdHdlrBinary, 0 }, + { "streamdriver.PrioritizeSAN", eCmdHdlrBinary, 0 }, + { "streamdriver.TlsVerifyDepth", eCmdHdlrPositiveInt, 0 }, + { "permittedpeer", eCmdHdlrArray, 0 }, + { "keepalive", eCmdHdlrBinary, 0 }, + { "keepalive.probes", eCmdHdlrNonNegInt, 0 }, + { "keepalive.time", eCmdHdlrNonNegInt, 0 }, + { "keepalive.interval", eCmdHdlrNonNegInt, 0 }, + { "gnutlsprioritystring", eCmdHdlrString, 0 }, + { "preservecase", eCmdHdlrBinary, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "port", eCmdHdlrString, CNFPARAM_REQUIRED }, /* legacy: InputTCPServerRun */ + { "maxsessions", eCmdHdlrPositiveInt, 0 }, + { "maxlisteners", eCmdHdlrPositiveInt, 0 }, + { "flowcontrol", eCmdHdlrBinary, 0 }, + { "disablelfdelimiter", eCmdHdlrBinary, 0 }, + { "discardtruncatedmsg", eCmdHdlrBinary, 0 }, + { "notifyonconnectionclose", eCmdHdlrBinary, 0 }, + { "notifyonconnectionopen", eCmdHdlrBinary, 0 }, + { "addtlframedelimiter", eCmdHdlrNonNegInt, 0 }, + { "maxframesize", eCmdHdlrInt, 0 }, + { "preservecase", eCmdHdlrBinary, 0 }, + { "listenportfilename", eCmdHdlrString, 0 }, + { "address", eCmdHdlrString, 0 }, + { "name", eCmdHdlrString, 0 }, + { "defaulttz", eCmdHdlrString, 0 }, + { "ruleset", eCmdHdlrString, 0 }, + { "streamdriver.mode", eCmdHdlrNonNegInt, 0 }, + { "streamdriver.authmode", eCmdHdlrString, 0 }, + { "streamdriver.permitexpiredcerts", eCmdHdlrString, 0 }, + { "streamdriver.name", eCmdHdlrString, 0 }, + { "streamdriver.CheckExtendedKeyPurpose", eCmdHdlrBinary, 0 }, + { "streamdriver.PrioritizeSAN", eCmdHdlrBinary, 0 }, + { "streamdriver.TlsVerifyDepth", eCmdHdlrPositiveInt, 0 }, + { "streamdriver.cafile", eCmdHdlrString, 0 }, + { "streamdriver.keyfile", eCmdHdlrString, 0 }, + { "streamdriver.certfile", eCmdHdlrString, 0 }, + { "permittedpeer", eCmdHdlrArray, 0 }, + { "gnutlsprioritystring", eCmdHdlrString, 0 }, + { "keepalive", eCmdHdlrBinary, 0 }, + { "keepalive.probes", eCmdHdlrNonNegInt, 0 }, + { "keepalive.time", eCmdHdlrNonNegInt, 0 }, + { "keepalive.interval", eCmdHdlrNonNegInt, 0 }, + { "supportoctetcountedframing", eCmdHdlrBinary, 0 }, + { "ratelimit.interval", eCmdHdlrInt, 0 }, + { "framingfix.cisco.asa", eCmdHdlrBinary, 0 }, + { "ratelimit.burst", eCmdHdlrInt, 0 } +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; + +#include "im-helper.h" /* must be included AFTER the type definitions! */ + +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ + +/* callbacks */ +/* this shall go into a specific ACL module! */ +static int +isPermittedHost(struct sockaddr *addr, char *fromHostFQDN, void __attribute__((unused)) *pUsrSrv, + void __attribute__((unused)) *pUsrSess) +{ + return net.isAllowedSender2(UCHAR_CONSTANT("TCP"), addr, fromHostFQDN, 1); +} + + +static rsRetVal +doOpenLstnSocks(tcpsrv_t *pSrv) +{ + ISOBJ_TYPE_assert(pSrv, tcpsrv); + dbgprintf("in imtcp doOpenLstnSocks\n"); + return tcpsrv.create_tcp_socket(pSrv); +} + + +static rsRetVal +doRcvData(tcps_sess_t *pSess, char *buf, size_t lenBuf, ssize_t *piLenRcvd, int *const oserr) +{ + assert(pSess != NULL); + assert(piLenRcvd != NULL); + *piLenRcvd = lenBuf; + return netstrm.Rcv(pSess->pStrm, (uchar*) buf, piLenRcvd, oserr); +} + +static rsRetVal +onRegularClose(tcps_sess_t *pSess) +{ + DEFiRet; + assert(pSess != NULL); + + /* process any incomplete frames left over */ + tcps_sess.PrepareClose(pSess); + /* Session closed */ + tcps_sess.Close(pSess); + RETiRet; +} + + +static rsRetVal +onErrClose(tcps_sess_t *pSess) +{ + DEFiRet; + assert(pSess != NULL); + + tcps_sess.Close(pSess); + RETiRet; +} + +/* ------------------------------ end callbacks ------------------------------ */ + + +/* set permitted peer -- rgerhards, 2008-05-19 + */ +static rsRetVal +setPermittedPeer(void __attribute__((unused)) *pVal, uchar *pszID) +{ + DEFiRet; + CHKiRet(net.AddPermittedPeer(&pPermPeersRoot, pszID)); + free(pszID); /* no longer needed, but we need to free as of interface def */ +finalize_it: + RETiRet; +} + + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst = NULL; + + DEFiRet; + CHKmalloc(inst = (instanceConf_t*) calloc(1, sizeof(instanceConf_t))); + CHKmalloc(inst->cnf_params = (tcpLstnParams_t*) calloc(1, sizeof(tcpLstnParams_t))); + inst->next = NULL; + inst->pszBindRuleset = NULL; + inst->pszInputName = NULL; + inst->dfltTZ = NULL; + inst->cnf_params->bSuppOctetFram = -1; /* unset */ + inst->bSPFramingFix = 0; + inst->ratelimitInterval = 0; + inst->ratelimitBurst = 10000; + + inst->pszStrmDrvrName = NULL; + inst->pszStrmDrvrAuthMode = NULL; + inst->pszStrmDrvrPermitExpiredCerts = NULL; + inst->pszStrmDrvrCAFile = NULL; + inst->pszStrmDrvrCRLFile = NULL; + inst->pszStrmDrvrKeyFile = NULL; + inst->pszStrmDrvrCertFile = NULL; + inst->pPermPeersRoot = NULL; + inst->gnutlsPriorityString = NULL; + inst->iStrmDrvrMode = loadModConf->iStrmDrvrMode; + inst->iStrmDrvrExtendedCertCheck = loadModConf->iStrmDrvrExtendedCertCheck; + inst->iStrmDrvrSANPreference = loadModConf->iStrmDrvrSANPreference; + inst->iStrmTlsVerifyDepth = loadModConf->iStrmTlsVerifyDepth; + inst->bKeepAlive = loadModConf->bKeepAlive; + inst->iKeepAliveIntvl = loadModConf->iKeepAliveIntvl; + inst->iKeepAliveProbes = loadModConf->iKeepAliveProbes; + inst->iKeepAliveTime = loadModConf->iKeepAliveTime; + inst->iAddtlFrameDelim = loadModConf->iAddtlFrameDelim; + inst->maxFrameSize = loadModConf->maxFrameSize; + inst->bUseFlowControl = loadModConf->bUseFlowControl; + inst->bDisableLFDelim = loadModConf->bDisableLFDelim; + inst->discardTruncatedMsg = loadModConf->discardTruncatedMsg; + inst->bEmitMsgOnClose = loadModConf->bEmitMsgOnClose; + inst->bEmitMsgOnOpen = loadModConf->bEmitMsgOnOpen; + inst->bPreserveCase = loadModConf->bPreserveCase; + inst->iTCPLstnMax = loadModConf->iTCPLstnMax; + inst->iTCPSessMax = loadModConf->iTCPSessMax; + + inst->cnf_params->pszLstnPortFileName = NULL; + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = inst; + } else { + loadModConf->tail->next = inst; + loadModConf->tail = inst; + } + + *pinst = inst; +finalize_it: + if(iRet != RS_RET_OK) { + free(inst->cnf_params); + free(inst); + } + RETiRet; +} + + +/* This function is called when a new listener instace shall be added to + * the current config object via the legacy config system. It just shuffles + * all parameters to the listener in-memory instance. + * rgerhards, 2011-05-04 + */ +static rsRetVal addInstance(void __attribute__((unused)) *pVal, uchar *pNewVal) +{ + instanceConf_t *inst; + DEFiRet; + + CHKiRet(createInstance(&inst)); + + CHKmalloc(inst->cnf_params->pszPort = ustrdup((pNewVal == NULL || *pNewVal == '\0') + ? (uchar*) "10514" : pNewVal)); + if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) { + inst->pszBindRuleset = NULL; + } else { + CHKmalloc(inst->pszBindRuleset = ustrdup(cs.pszBindRuleset)); + } + if((cs.lstnIP == NULL) || (cs.lstnIP[0] == '\0')) { + inst->cnf_params->pszAddr = NULL; + } else { + CHKmalloc(inst->cnf_params->pszAddr = ustrdup(cs.lstnIP)); + } + if((cs.lstnPortFile == NULL) || (cs.lstnPortFile[0] == '\0')) { + inst->cnf_params->pszLstnPortFileName = NULL; + } else { + CHKmalloc(inst->cnf_params->pszLstnPortFileName = ustrdup(cs.lstnPortFile)); + } + + if((cs.pszInputName == NULL) || (cs.pszInputName[0] == '\0')) { + inst->pszInputName = NULL; + } else { + CHKmalloc(inst->pszInputName = ustrdup(cs.pszInputName)); + } + inst->cnf_params->bSuppOctetFram = cs.bSuppOctetFram; + inst->iStrmDrvrMode = cs.iStrmDrvrMode; + inst->bKeepAlive = cs.bKeepAlive ; + inst->bUseFlowControl = cs.bUseFlowControl; + inst->bDisableLFDelim = cs.bDisableLFDelim; + inst->bEmitMsgOnClose = cs.bEmitMsgOnClose; + inst->bPreserveCase = cs.bPreserveCase; + inst->iKeepAliveProbes = cs.iKeepAliveProbes; + inst->iKeepAliveIntvl = cs.iKeepAliveIntvl; + inst->iKeepAliveTime = cs.iKeepAliveTime; + inst->iKeepAliveTime = cs.iKeepAliveTime; + inst->iAddtlFrameDelim = cs.iAddtlFrameDelim; + inst->iTCPLstnMax = cs.iTCPLstnMax; + inst->iTCPSessMax = cs.iTCPSessMax; + inst->iStrmDrvrMode = cs.iStrmDrvrMode; + +finalize_it: + free(pNewVal); + RETiRet; +} + + +static rsRetVal +addListner(modConfData_t *modConf, instanceConf_t *inst) +{ + DEFiRet; + uchar *psz; /* work variable */ + permittedPeers_t *peers; + + tcpsrv_t *pOurTcpsrv; + CHKiRet(tcpsrv.Construct(&pOurTcpsrv)); + /* callbacks */ + CHKiRet(tcpsrv.SetCBIsPermittedHost(pOurTcpsrv, isPermittedHost)); + CHKiRet(tcpsrv.SetCBRcvData(pOurTcpsrv, doRcvData)); + CHKiRet(tcpsrv.SetCBOpenLstnSocks(pOurTcpsrv, doOpenLstnSocks)); + CHKiRet(tcpsrv.SetCBOnRegularClose(pOurTcpsrv, onRegularClose)); + CHKiRet(tcpsrv.SetCBOnErrClose(pOurTcpsrv, onErrClose)); + /* params */ + CHKiRet(tcpsrv.SetKeepAlive(pOurTcpsrv, inst->bKeepAlive)); + CHKiRet(tcpsrv.SetKeepAliveIntvl(pOurTcpsrv, inst->iKeepAliveIntvl)); + CHKiRet(tcpsrv.SetKeepAliveProbes(pOurTcpsrv, inst->iKeepAliveProbes)); + CHKiRet(tcpsrv.SetKeepAliveTime(pOurTcpsrv, inst->iKeepAliveTime)); + CHKiRet(tcpsrv.SetSessMax(pOurTcpsrv, inst->iTCPSessMax)); + CHKiRet(tcpsrv.SetLstnMax(pOurTcpsrv, inst->iTCPLstnMax)); + CHKiRet(tcpsrv.SetDrvrMode(pOurTcpsrv, inst->iStrmDrvrMode)); + CHKiRet(tcpsrv.SetDrvrCheckExtendedKeyUsage(pOurTcpsrv, inst->iStrmDrvrExtendedCertCheck)); + CHKiRet(tcpsrv.SetDrvrPrioritizeSAN(pOurTcpsrv, inst->iStrmDrvrSANPreference)); + CHKiRet(tcpsrv.SetDrvrTlsVerifyDepth(pOurTcpsrv, inst->iStrmTlsVerifyDepth)); + CHKiRet(tcpsrv.SetUseFlowControl(pOurTcpsrv, inst->bUseFlowControl)); + CHKiRet(tcpsrv.SetAddtlFrameDelim(pOurTcpsrv, inst->iAddtlFrameDelim)); + CHKiRet(tcpsrv.SetMaxFrameSize(pOurTcpsrv, inst->maxFrameSize)); + CHKiRet(tcpsrv.SetbDisableLFDelim(pOurTcpsrv, inst->bDisableLFDelim)); + CHKiRet(tcpsrv.SetDiscardTruncatedMsg(pOurTcpsrv, inst->discardTruncatedMsg)); + CHKiRet(tcpsrv.SetNotificationOnRemoteClose(pOurTcpsrv, inst->bEmitMsgOnClose)); + CHKiRet(tcpsrv.SetNotificationOnRemoteOpen(pOurTcpsrv, inst->bEmitMsgOnOpen)); + CHKiRet(tcpsrv.SetPreserveCase(pOurTcpsrv, inst->bPreserveCase)); + /* now set optional params, but only if they were actually configured */ + psz = (inst->pszStrmDrvrName == NULL) ? modConf->pszStrmDrvrName : inst->pszStrmDrvrName; + if(psz != NULL) { + CHKiRet(tcpsrv.SetDrvrName(pOurTcpsrv, psz)); + } + psz = (inst->pszStrmDrvrAuthMode == NULL) ? modConf->pszStrmDrvrAuthMode : inst->pszStrmDrvrAuthMode; + if(psz != NULL) { + CHKiRet(tcpsrv.SetDrvrAuthMode(pOurTcpsrv, psz)); + } + psz = (inst->gnutlsPriorityString == NULL) + ? modConf->gnutlsPriorityString : inst->gnutlsPriorityString; + CHKiRet(tcpsrv.SetGnutlsPriorityString(pOurTcpsrv, psz)); + /* Call SetDrvrPermitExpiredCerts required + * when param is NULL default handling for ExpiredCerts is set! */ + psz = (inst->pszStrmDrvrPermitExpiredCerts == NULL) + ? modConf->pszStrmDrvrPermitExpiredCerts : inst->pszStrmDrvrPermitExpiredCerts; + CHKiRet(tcpsrv.SetDrvrPermitExpiredCerts(pOurTcpsrv, psz)); + + psz = (inst->pszStrmDrvrCAFile == NULL) + ? modConf->pszStrmDrvrCAFile : inst->pszStrmDrvrCAFile; + CHKiRet(tcpsrv.SetDrvrCAFile(pOurTcpsrv, psz)); + + psz = (inst->pszStrmDrvrCRLFile == NULL) + ? modConf->pszStrmDrvrCRLFile : inst->pszStrmDrvrCRLFile; + CHKiRet(tcpsrv.SetDrvrCRLFile(pOurTcpsrv, psz)); + + psz = (inst->pszStrmDrvrKeyFile == NULL) + ? modConf->pszStrmDrvrKeyFile : inst->pszStrmDrvrKeyFile; + CHKiRet(tcpsrv.SetDrvrKeyFile(pOurTcpsrv, psz)); + + psz = (inst->pszStrmDrvrCertFile == NULL) + ? modConf->pszStrmDrvrCertFile : inst->pszStrmDrvrCertFile; + CHKiRet(tcpsrv.SetDrvrCertFile(pOurTcpsrv, psz)); + + peers = (inst->pPermPeersRoot == NULL) + ? modConf->pPermPeersRoot : inst->pPermPeersRoot; + if(peers != NULL) { + CHKiRet(tcpsrv.SetDrvrPermPeers(pOurTcpsrv, peers)); + } + + /* initialized, now add socket and listener params */ + DBGPRINTF("imtcp: trying to add port *:%s\n", inst->cnf_params->pszPort); + inst->cnf_params->pRuleset = inst->pBindRuleset; + CHKiRet(tcpsrv.SetInputName(pOurTcpsrv, inst->cnf_params, inst->pszInputName == NULL ? + UCHAR_CONSTANT("imtcp") : inst->pszInputName)); + CHKiRet(tcpsrv.SetOrigin(pOurTcpsrv, (uchar*)"imtcp")); + CHKiRet(tcpsrv.SetDfltTZ(pOurTcpsrv, (inst->dfltTZ == NULL) ? (uchar*)"" : inst->dfltTZ)); + CHKiRet(tcpsrv.SetbSPFramingFix(pOurTcpsrv, inst->bSPFramingFix)); + CHKiRet(tcpsrv.SetLinuxLikeRatelimiters(pOurTcpsrv, inst->ratelimitInterval, inst->ratelimitBurst)); + + if((ustrcmp(inst->cnf_params->pszPort, UCHAR_CONSTANT("0")) == 0 + && inst->cnf_params->pszLstnPortFileName == NULL) + || ustrcmp(inst->cnf_params->pszPort, UCHAR_CONSTANT("0")) < 0) { + LogMsg(0, RS_RET_OK, LOG_WARNING, "imtcp: port 0 and no port file set -> using port 514 instead"); + CHKmalloc(inst->cnf_params->pszPort = (uchar*)strdup("514")); + } + tcpsrv.configureTCPListen(pOurTcpsrv, inst->cnf_params); + + tcpsrv_etry_t *etry; + CHKmalloc(etry = (tcpsrv_etry_t*) calloc(1, sizeof(tcpsrv_etry_t))); + etry->tcpsrv = pOurTcpsrv; + etry->next = tcpsrv_root; + tcpsrv_root = etry; + ++n_tcpsrv; + +finalize_it: + if(iRet != RS_RET_OK) { + LogError(0, NO_ERRCODE, "imtcp: error %d trying to add listener", iRet); + } + RETiRet; +} + + +BEGINnewInpInst + struct cnfparamvals *pvals; + instanceConf_t *inst; + int i; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imtcp)\n"); + + pvals = nvlstGetParams(lst, &inppblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, + "imtcp: required parameter are missing\n"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("input param blk in imtcp:\n"); + cnfparamsPrint(&inppblk, pvals); + } + + CHKiRet(createInstance(&inst)); + + for(i = 0 ; i < inppblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(inppblk.descr[i].name, "port")) { + inst->cnf_params->pszPort = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "address")) { + inst->cnf_params->pszAddr = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "name")) { + inst->pszInputName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "defaulttz")) { + inst->dfltTZ = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "framingfix.cisco.asa")) { + inst->bSPFramingFix = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.mode")) { + inst->iStrmDrvrMode = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.CheckExtendedKeyPurpose")) { + inst->iStrmDrvrExtendedCertCheck = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.PrioritizeSAN")) { + inst->iStrmDrvrSANPreference = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.TlsVerifyDepth")) { + if (pvals[i].val.d.n >= 2) { + inst->iStrmTlsVerifyDepth = (int) pvals[i].val.d.n; + } else { + parser_errmsg("streamdriver.TlsVerifyDepth must be 2 or higher but is %d", + (int) pvals[i].val.d.n); + } + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.authmode")) { + inst->pszStrmDrvrAuthMode = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.permitexpiredcerts")) { + inst->pszStrmDrvrPermitExpiredCerts = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.cafile")) { + inst->pszStrmDrvrCAFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.crlfile")) { + inst->pszStrmDrvrCRLFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.keyfile")) { + inst->pszStrmDrvrKeyFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.certfile")) { + inst->pszStrmDrvrCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "streamdriver.name")) { + inst->pszStrmDrvrName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "gnutlsprioritystring")) { + inst->gnutlsPriorityString = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "permittedpeer")) { + for(int j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + uchar *const peer = (uchar*) es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + CHKiRet(net.AddPermittedPeer(&inst->pPermPeersRoot, peer)); + free(peer); + } + } else if(!strcmp(inppblk.descr[i].name, "flowcontrol")) { + inst->bUseFlowControl = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "disablelfdelimiter")) { + inst->bDisableLFDelim = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "discardtruncatedmsg")) { + inst->discardTruncatedMsg = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "notifyonconnectionclose")) { + inst->bEmitMsgOnClose = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "notifyonconnectionopen")) { + inst->bEmitMsgOnOpen = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "addtlframedelimiter")) { + inst->iAddtlFrameDelim = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "maxframesize")) { + const int max = (int) pvals[i].val.d.n; + if(max <= 200000000) { + inst->maxFrameSize = max; + } else { + LogError(0, RS_RET_PARAM_ERROR, "imtcp: invalid value for 'maxFrameSize' " + "parameter given is %d, max is 200000000", max); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + } else if(!strcmp(inppblk.descr[i].name, "maxsessions")) { + inst->iTCPSessMax = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "maxlisteners")) { + inst->iTCPLstnMax = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "supportoctetcountedframing")) { + inst->cnf_params->bSuppOctetFram = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive")) { + inst->bKeepAlive = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.probes")) { + inst->iKeepAliveProbes = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.time")) { + inst->iKeepAliveTime = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.interval")) { + inst->iKeepAliveIntvl = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ratelimit.burst")) { + inst->ratelimitBurst = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ratelimit.interval")) { + inst->ratelimitInterval = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "preservecase")) { + inst->bPreserveCase = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "listenportfilename")) { + inst->cnf_params->pszLstnPortFileName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("imtcp: program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + } +finalize_it: +CODE_STD_FINALIZERnewInpInst + cnfparamvalsDestruct(pvals, &inppblk); +ENDnewInpInst + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + /* init our settings */ + loadModConf->iTCPSessMax = 200; + loadModConf->iTCPLstnMax = 20; + loadModConf->bSuppOctetFram = 1; + loadModConf->iStrmDrvrMode = 0; + loadModConf->iStrmDrvrExtendedCertCheck = 0; + loadModConf->iStrmDrvrSANPreference = 0; + loadModConf->iStrmTlsVerifyDepth = 0; + loadModConf->bUseFlowControl = 1; + loadModConf->bKeepAlive = 0; + loadModConf->iKeepAliveIntvl = 0; + loadModConf->iKeepAliveProbes = 0; + loadModConf->iKeepAliveTime = 0; + loadModConf->bEmitMsgOnClose = 0; + loadModConf->bEmitMsgOnOpen = 0; + loadModConf->iAddtlFrameDelim = TCPSRV_NO_ADDTL_DELIMITER; + loadModConf->maxFrameSize = 200000; + loadModConf->bDisableLFDelim = 0; + loadModConf->discardTruncatedMsg = 0; + loadModConf->gnutlsPriorityString = NULL; + loadModConf->pszStrmDrvrName = NULL; + loadModConf->pszStrmDrvrAuthMode = NULL; + loadModConf->pszStrmDrvrPermitExpiredCerts = NULL; + loadModConf->pszStrmDrvrCAFile = NULL; + loadModConf->pszStrmDrvrCRLFile = NULL; + loadModConf->pszStrmDrvrKeyFile = NULL; + loadModConf->pszStrmDrvrCertFile = NULL; + loadModConf->pPermPeersRoot = NULL; + loadModConf->configSetViaV2Method = 0; + loadModConf->bPreserveCase = 1; /* default to true */ + bLegacyCnfModGlobalsPermitted = 1; + /* init legacy config variables */ + resetConfigVariables(NULL, NULL); /* dummy parameters just to fulfill interface def */ +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "imtcp: error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for imtcp:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "flowcontrol")) { + loadModConf->bUseFlowControl = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "disablelfdelimiter")) { + loadModConf->bDisableLFDelim = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "discardtruncatedmsg")) { + loadModConf->discardTruncatedMsg = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "octetcountedframing")) { + loadModConf->bSuppOctetFram = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "notifyonconnectionclose")) { + loadModConf->bEmitMsgOnClose = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "notifyonconnectionopen")) { + loadModConf->bEmitMsgOnOpen = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "addtlframedelimiter")) { + loadModConf->iAddtlFrameDelim = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "maxframesize")) { + const int max = (int) pvals[i].val.d.n; + if(max <= 200000000) { + loadModConf->maxFrameSize = max; + } else { + LogError(0, RS_RET_PARAM_ERROR, "imtcp: invalid value for 'maxFrameSize' " + "parameter given is %d, max is 200000000", max); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + } else if(!strcmp(modpblk.descr[i].name, "maxsessions")) { + loadModConf->iTCPSessMax = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "maxlisteners") || + !strcmp(modpblk.descr[i].name, "maxlistners")) { /* keep old name for a while */ + loadModConf->iTCPLstnMax = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "keepalive")) { + loadModConf->bKeepAlive = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "keepalive.probes")) { + loadModConf->iKeepAliveProbes = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "keepalive.time")) { + loadModConf->iKeepAliveTime = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "keepalive.interval")) { + loadModConf->iKeepAliveIntvl = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "gnutlsprioritystring")) { + loadModConf->gnutlsPriorityString = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.mode")) { + loadModConf->iStrmDrvrMode = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.CheckExtendedKeyPurpose")) { + loadModConf->iStrmDrvrExtendedCertCheck = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.PrioritizeSAN")) { + loadModConf->iStrmDrvrSANPreference = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.TlsVerifyDepth")) { + if (pvals[i].val.d.n >= 2) { + loadModConf->iStrmTlsVerifyDepth = (int) pvals[i].val.d.n; + } else { + parser_errmsg("streamdriver.TlsVerifyDepth must be 2 or higher but is %d", + (int) pvals[i].val.d.n); + } + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.authmode")) { + loadModConf->pszStrmDrvrAuthMode = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.permitexpiredcerts")) { + loadModConf->pszStrmDrvrPermitExpiredCerts = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.cafile")) { + loadModConf->pszStrmDrvrCAFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.crlfile")) { + loadModConf->pszStrmDrvrCRLFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.keyfile")) { + loadModConf->pszStrmDrvrKeyFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.certfile")) { + loadModConf->pszStrmDrvrCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "streamdriver.name")) { + loadModConf->pszStrmDrvrName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "permittedpeer")) { + for(int j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + uchar *const peer = (uchar*) es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + CHKiRet(net.AddPermittedPeer(&loadModConf->pPermPeersRoot, peer)); + free(peer); + } + } else if(!strcmp(modpblk.descr[i].name, "preservecase")) { + loadModConf->bPreserveCase = (int) pvals[i].val.d.n; + } else { + dbgprintf("imtcp: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + + /* remove all of our legacy handlers, as they can not used in addition + * the the new-style config method. + */ + bLegacyCnfModGlobalsPermitted = 0; + loadModConf->configSetViaV2Method = 1; + +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(!loadModConf->configSetViaV2Method) { + /* persist module-specific settings from legacy config system */ + pModConf->iTCPSessMax = cs.iTCPSessMax; + pModConf->iTCPLstnMax = cs.iTCPLstnMax; + pModConf->iStrmDrvrMode = cs.iStrmDrvrMode; + pModConf->bEmitMsgOnClose = cs.bEmitMsgOnClose; + pModConf->bSuppOctetFram = cs.bSuppOctetFram; + pModConf->iAddtlFrameDelim = cs.iAddtlFrameDelim; + pModConf->maxFrameSize = cs.maxFrameSize; + pModConf->bDisableLFDelim = cs.bDisableLFDelim; + pModConf->bUseFlowControl = cs.bUseFlowControl; + pModConf->bKeepAlive = cs.bKeepAlive; + pModConf->iKeepAliveProbes = cs.iKeepAliveProbes; + pModConf->iKeepAliveIntvl = cs.iKeepAliveIntvl; + pModConf->iKeepAliveTime = cs.iKeepAliveTime; + if(pPermPeersRoot != NULL) { + assert(pModConf->pPermPeersRoot == NULL); + pModConf->pPermPeersRoot = pPermPeersRoot; + pPermPeersRoot = NULL; /* memory handed over! */ + } + if((cs.pszStrmDrvrAuthMode == NULL) || (cs.pszStrmDrvrAuthMode[0] == '\0')) { + loadModConf->pszStrmDrvrAuthMode = NULL; + } else { + loadModConf->pszStrmDrvrAuthMode = cs.pszStrmDrvrAuthMode; + cs.pszStrmDrvrAuthMode = NULL; + } + pModConf->bPreserveCase = cs.bPreserveCase; + } + free(cs.pszStrmDrvrAuthMode); + cs.pszStrmDrvrAuthMode = NULL; + + loadModConf = NULL; /* done loading */ +ENDendCnfLoad + + +/* function to generate error message if framework does not find requested ruleset */ +static inline void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + LogError(0, NO_ERRCODE, "imtcp: ruleset '%s' for port %s not found - " + "using default ruleset instead", inst->pszBindRuleset, + inst->cnf_params->pszPort); +} + +BEGINcheckCnf + instanceConf_t *inst; +CODESTARTcheckCnf + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + std_checkRuleset(pModConf, inst); + if(inst->cnf_params->bSuppOctetFram == FRAMING_UNSET) + inst->cnf_params->bSuppOctetFram = pModConf->bSuppOctetFram; + } + if(pModConf->root == NULL) { + LogError(0, RS_RET_NO_LISTNERS , "imtcp: module loaded, but " + "no listeners defined - no input will be gathered"); + iRet = RS_RET_NO_LISTNERS; + } +ENDcheckCnf + + +BEGINactivateCnfPrePrivDrop + instanceConf_t *inst; +CODESTARTactivateCnfPrePrivDrop + runModConf = pModConf; + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + addListner(runModConf, inst); + } + if(tcpsrv_root == NULL) + ABORT_FINALIZE(RS_RET_NO_RUN); + tcpsrv_etry_t *etry = tcpsrv_root; + while(etry != NULL) { + CHKiRet(tcpsrv.ConstructFinalize(etry->tcpsrv)); + etry = etry->next; + } +finalize_it: +ENDactivateCnfPrePrivDrop + + +BEGINactivateCnf +CODESTARTactivateCnf + /* sorry, nothing to do here... */ +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; +CODESTARTfreeCnf + free(pModConf->gnutlsPriorityString); + free(pModConf->pszStrmDrvrName); + free(pModConf->pszStrmDrvrAuthMode); + free(pModConf->pszStrmDrvrPermitExpiredCerts); + free(pModConf->pszStrmDrvrCAFile); + free(pModConf->pszStrmDrvrCRLFile); + free(pModConf->pszStrmDrvrKeyFile); + free(pModConf->pszStrmDrvrCertFile); + if(pModConf->pPermPeersRoot != NULL) { + net.DestructPermittedPeers(&pModConf->pPermPeersRoot); + } + + for(inst = pModConf->root ; inst != NULL ; ) { + free((void*)inst->pszBindRuleset); + free((void*)inst->pszStrmDrvrAuthMode); + free((void*)inst->pszStrmDrvrName); + free((void*)inst->pszStrmDrvrPermitExpiredCerts); + free((void*)inst->pszStrmDrvrCAFile); + free((void*)inst->pszStrmDrvrCRLFile); + free((void*)inst->pszStrmDrvrKeyFile); + free((void*)inst->pszStrmDrvrCertFile); + free((void*)inst->gnutlsPriorityString); + free((void*)inst->pszInputName); + free((void*)inst->dfltTZ); + if(inst->pPermPeersRoot != NULL) { + net.DestructPermittedPeers(&inst->pPermPeersRoot); + } + del = inst; + inst = inst->next; + free(del); + } +ENDfreeCnf + +static void * +RunServerThread(void *myself) +{ + tcpsrv_etry_t *const etry = (tcpsrv_etry_t*) myself; + rsRetVal iRet; + iRet = tcpsrv.Run(etry->tcpsrv); + if(iRet != RS_RET_OK) { + LogError(0, iRet, "imtcp: error while terminating server; rsyslog may hang on shutdown"); + } + return NULL; +} + + +/* support for running multiple servers on multiple threads (one server per thread) */ +static void +startSrvWrkr(tcpsrv_etry_t *const etry) +{ + int r; + pthread_attr_t sessThrdAttr; + + /* We need to temporarily block all signals because the new thread + * inherits our signal mask. There is a race if we do not block them + * now, and we have seen in practice that this race causes grief. + * So we 1. save the current set, 2. block evertyhing, 3. start + * threads, and 4 reset the current set to saved state. + * rgerhards, 2019-08-16 + */ + sigset_t sigSet, sigSetSave; + sigfillset(&sigSet); + /* enable signals we still need */ + sigdelset(&sigSet, SIGTTIN); + sigdelset(&sigSet, SIGSEGV); + pthread_sigmask(SIG_SETMASK, &sigSet, &sigSetSave); + + pthread_attr_init(&sessThrdAttr); + pthread_attr_setstacksize(&sessThrdAttr, 4096*1024); + r = pthread_create(&etry->tid, &sessThrdAttr, RunServerThread, etry); + if(r != 0) { + LogError(r, NO_ERRCODE, "imtcp error creating server thread"); + /* we do NOT abort, as other servers may run - after all, we logged an error */ + } + pthread_attr_destroy(&sessThrdAttr); + pthread_sigmask(SIG_SETMASK, &sigSetSave, NULL); +} + +/* stop server worker thread + */ +static void +stopSrvWrkr(tcpsrv_etry_t *const etry) +{ + DBGPRINTF("Wait for thread shutdown etry %p\n", etry); + pthread_kill(etry->tid, SIGTTIN); + pthread_join(etry->tid, NULL); + DBGPRINTF("input %p terminated\n", etry); +} + +/* This function is called to gather input. + */ +BEGINrunInput +CODESTARTrunInput + tcpsrv_etry_t *etry = tcpsrv_root->next; + while(etry != NULL) { + startSrvWrkr(etry); + etry = etry->next; + } + + iRet = tcpsrv.Run(tcpsrv_root->tcpsrv); + + /* de-init remaining servers */ + etry = tcpsrv_root->next; + while(etry != NULL) { + stopSrvWrkr(etry); + etry = etry->next; + } +ENDrunInput + + +/* initialize and return if will run or not */ +BEGINwillRun +CODESTARTwillRun + net.PrintAllowedSenders(2); /* TCP */ +ENDwillRun + + +BEGINafterRun +CODESTARTafterRun + tcpsrv_etry_t *etry = tcpsrv_root; + tcpsrv_etry_t *del; + while(etry != NULL) { + iRet = tcpsrv.Destruct(&etry->tcpsrv); + // TODO: check iRet, reprot error + del = etry; + etry = etry->next; + free(del); + } + net.clearAllowedSenders(UCHAR_CONSTANT("TCP")); +ENDafterRun + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINmodExit +CODESTARTmodExit + /* release objects we used */ + objRelease(net, LM_NET_FILENAME); + objRelease(netstrm, LM_NETSTRMS_FILENAME); + objRelease(tcps_sess, LM_TCPSRV_FILENAME); + objRelease(tcpsrv, LM_TCPSRV_FILENAME); + objRelease(ruleset, CORE_COMPONENT); +ENDmodExit + + +static rsRetVal +resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + cs.iTCPSessMax = 200; + cs.iTCPLstnMax = 20; + cs.bSuppOctetFram = 1; + cs.iStrmDrvrMode = 0; + cs.bUseFlowControl = 1; + cs.bKeepAlive = 0; + cs.iKeepAliveProbes = 0; + cs.iKeepAliveTime = 0; + cs.iKeepAliveIntvl = 0; + cs.bEmitMsgOnClose = 0; + cs.iAddtlFrameDelim = TCPSRV_NO_ADDTL_DELIMITER; + cs.maxFrameSize = 200000; + cs.bDisableLFDelim = 0; + cs.bPreserveCase = 1; + free(cs.pszStrmDrvrAuthMode); + cs.pszStrmDrvrAuthMode = NULL; + free(cs.pszInputName); + cs.pszInputName = NULL; + free(cs.lstnPortFile); + cs.lstnPortFile = NULL; + return RS_RET_OK; +} + + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + tcpsrv_root = NULL; + /* request objects we use */ + CHKiRet(objUse(net, LM_NET_FILENAME)); + CHKiRet(objUse(netstrm, LM_NETSTRMS_FILENAME)); + CHKiRet(objUse(tcps_sess, LM_TCPSRV_FILENAME)); + CHKiRet(objUse(tcpsrv, LM_TCPSRV_FILENAME)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + + /* register config file handlers */ + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputtcpserverrun"), 0, eCmdHdlrGetWord, + addInstance, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputtcpserverinputname"), 0, eCmdHdlrGetWord, + NULL, &cs.pszInputName, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("inputtcpserverbindruleset"), 0, eCmdHdlrGetWord, + NULL, &cs.pszBindRuleset, STD_LOADABLE_MODULE_ID)); + /* module-global config params - will be disabled in configs that are loaded + * via module(...). + */ + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserverstreamdriverpermittedpeer"), 0, eCmdHdlrGetWord, + setPermittedPeer, NULL, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserverstreamdriverauthmode"), 0, eCmdHdlrGetWord, + NULL, &cs.pszStrmDrvrAuthMode, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserverkeepalive"), 0, eCmdHdlrBinary, + NULL, &cs.bKeepAlive, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserverkeepalive_probes"), 0, eCmdHdlrInt, + NULL, &cs.iKeepAliveProbes, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserverkeepalive_intvl"), 0, eCmdHdlrInt, + NULL, &cs.iKeepAliveIntvl, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserverkeepalive_time"), 0, eCmdHdlrInt, + NULL, &cs.iKeepAliveTime, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpflowcontrol"), 0, eCmdHdlrBinary, + NULL, &cs.bUseFlowControl, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserverdisablelfdelimiter"), 0, eCmdHdlrBinary, + NULL, &cs.bDisableLFDelim, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserveraddtlframedelimiter"), 0, eCmdHdlrInt, + NULL, &cs.iAddtlFrameDelim, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserversupportoctetcountedframing"), 0, eCmdHdlrBinary, + NULL, &cs.bSuppOctetFram, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpmaxsessions"), 0, eCmdHdlrInt, + NULL, &cs.iTCPSessMax, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpmaxlisteners"), 0, eCmdHdlrInt, + NULL, &cs.iTCPLstnMax, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpservernotifyonconnectionclose"), 0, eCmdHdlrBinary, + NULL, &cs.bEmitMsgOnClose, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserverstreamdrivermode"), 0, eCmdHdlrInt, + NULL, &cs.iStrmDrvrMode, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserverpreservecase"), 1, eCmdHdlrBinary, + NULL, &cs.bPreserveCase, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2(UCHAR_CONSTANT("inputtcpserverlistenportfile"), 1, eCmdHdlrGetWord, + NULL, &cs.lstnPortFile, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(omsdRegCFSLineHdlr(UCHAR_CONSTANT("resetconfigvariables"), 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit diff --git a/plugins/imudp/Makefile.am b/plugins/imudp/Makefile.am new file mode 100644 index 0000000..32d3d86 --- /dev/null +++ b/plugins/imudp/Makefile.am @@ -0,0 +1,11 @@ +pkglib_LTLIBRARIES = imudp.la + +imudp_la_SOURCES = imudp.c +imudp_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +imudp_la_LDFLAGS = -module -avoid-version +imudp_la_LIBADD = $(IMUDP_LIBS) + +if ENABLE_LIBLOGGING_STDLOG +imudp_la_CPPFLAGS += $(LIBLOGGING_STDLOG_CFLAGS) +imudp_la_LDFLAGS += $(LIBLOGGING_STDLOG_LIBS) +endif diff --git a/plugins/imudp/Makefile.in b/plugins/imudp/Makefile.in new file mode 100644 index 0000000..5b94114 --- /dev/null +++ b/plugins/imudp/Makefile.in @@ -0,0 +1,800 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/imudp/imudp.c b/plugins/imudp/imudp.c new file mode 100644 index 0000000..982f6c4 --- /dev/null +++ b/plugins/imudp/imudp.c @@ -0,0 +1,1419 @@ +/* imudp.c + * This is the implementation of the UDP input module. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * Copyright 2007-2018 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Rsyslog is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Rsyslog is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Rsyslog. If not, see <http://www.gnu.org/licenses/>. + * + * A copy of the GPL can be found in the file "COPYING" in this distribution. + */ +#include "config.h" +#include <stdio.h> +#include <stdlib.h> +#include <assert.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <netdb.h> +#include <sys/socket.h> +#include <pthread.h> +#include <signal.h> +#include <poll.h> +#ifdef HAVE_SYS_EPOLL_H +# include <sys/epoll.h> +#endif +#ifdef HAVE_SCHED_H +# include <sched.h> +#endif +#ifdef HAVE_SYS_PRCTL_H +# include <sys/prctl.h> +#endif +#include "rsyslog.h" +#include "dirty.h" +#include "net.h" +#include "cfsysline.h" +#include "module-template.h" +#include "srUtils.h" +#include "errmsg.h" +#include "glbl.h" +#include "msg.h" +#include "parser.h" +#include "datetime.h" +#include "prop.h" +#include "ruleset.h" +#include "statsobj.h" +#include "ratelimit.h" +#include "unicode-helper.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imudp") + +/* defines */ +#define MAX_WRKR_THREADS 32 + +/* Module static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(net) +DEFobjCurrIf(datetime) +DEFobjCurrIf(prop) +DEFobjCurrIf(ruleset) +DEFobjCurrIf(statsobj) + + +static struct lstn_s { + struct lstn_s *next; + int sock; /* socket */ + ruleset_t *pRuleset; /* bound ruleset */ + prop_t *pInputName; + statsobj_t *stats; /* listener stats */ + ratelimit_t *ratelimiter; + uchar *dfltTZ; + STATSCOUNTER_DEF(ctrSubmit, mutCtrSubmit) + STATSCOUNTER_DEF(ctrDisallowed, mutCtrDisallowed) +} *lcnfRoot = NULL, *lcnfLast = NULL; + + +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ +static int bDoACLCheck; /* are ACL checks neeed? Cached once immediately before listener startup */ +static int iMaxLine; /* maximum UDP message size supported */ +#define BATCH_SIZE_DFLT 32 /* do not overdo, has heavy toll on memory, especially with large msgs */ +#define TIME_REQUERY_DFLT 2 +#define SCHED_PRIO_UNSET -12345678 /* a value that indicates that the scheduling priority has not been set */ +/* config vars for legacy config system */ +static struct configSettings_s { + uchar *pszBindAddr; /* IP to bind socket to */ + char *pszBindDevice; /* Device to bind socket to */ + uchar *pszSchedPolicy; /* scheduling policy string */ + uchar *pszBindRuleset; /* name of Ruleset to bind to */ + int iSchedPrio; /* scheduling priority */ + int iTimeRequery; /* how often is time to be queried inside tight recv loop? 0=always */ +} cs; + +struct instanceConf_s { + uchar *pszBindAddr; /* IP to bind socket to */ + char *pszBindDevice; /* Device to bind socket to */ + uchar *pszBindPort; /* Port to bind socket to */ + uchar *pszBindRuleset; /* name of ruleset to bind to */ + uchar *inputname; + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + uchar *dfltTZ; + unsigned int ratelimitInterval; + unsigned int ratelimitBurst; + int rcvbuf; /* 0 means: do not set, keep OS default */ + /* 0 means: IP_FREEBIND is disabled + 1 means: IP_FREEBIND enabled + warning disabled + 1+ means: IP+FREEBIND enabled + warning enabled */ + int ipfreebind; + struct instanceConf_s *next; + sbool bAppendPortToInpname; +}; + +/* The following structure controls the worker threads. Global data is + * needed for their access. + */ +static struct wrkrInfo_s { + pthread_t tid; /* the worker's thread ID */ + int id; + thrdInfo_t *pThrd; + statsobj_t *stats; /* worker thread stats */ + STATSCOUNTER_DEF(ctrCall_recvmmsg, mutCtrCall_recvmmsg) + STATSCOUNTER_DEF(ctrCall_recvmsg, mutCtrCall_recvmsg) + STATSCOUNTER_DEF(ctrMsgsRcvd, mutCtrMsgsRcvd) + uchar *pRcvBuf; /* receive buffer (for a single packet) */ +# ifdef HAVE_RECVMMSG + struct sockaddr_storage *frominet; + struct mmsghdr *recvmsg_mmh; + struct iovec *recvmsg_iov; +# endif +} wrkrInfo[MAX_WRKR_THREADS]; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + instanceConf_t *root, *tail; + uchar *pszSchedPolicy; /* scheduling policy string */ + int iSchedPolicy; /* scheduling policy as SCHED_xxx */ + int iSchedPrio; /* scheduling priority */ + int iTimeRequery; /* how often is time to be queried inside tight recv loop? 0=always */ + int batchSize; /* max nbr of input batch --> also recvmmsg() max count */ + int8_t wrkrMax; /* max nbr of worker threads */ + sbool configSetViaV2Method; + sbool bPreserveCase; /* preserves the case of fromhost; "off" by default */ +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */ + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "schedulingpolicy", eCmdHdlrGetWord, 0 }, + { "schedulingpriority", eCmdHdlrInt, 0 }, + { "batchsize", eCmdHdlrInt, 0 }, + { "threads", eCmdHdlrPositiveInt, 0 }, + { "timerequery", eCmdHdlrInt, 0 }, + { "preservecase", eCmdHdlrBinary, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "port", eCmdHdlrArray, CNFPARAM_REQUIRED }, /* legacy: InputTCPServerRun */ + { "defaulttz", eCmdHdlrString, 0 }, + { "inputname", eCmdHdlrGetWord, 0 }, + { "inputname.appendport", eCmdHdlrBinary, 0 }, + { "name", eCmdHdlrGetWord, 0 }, + { "name.appendport", eCmdHdlrBinary, 0 }, + { "address", eCmdHdlrString, 0 }, + { "device", eCmdHdlrString, 0 }, + { "ratelimit.interval", eCmdHdlrInt, 0 }, + { "ratelimit.burst", eCmdHdlrInt, 0 }, + { "rcvbufsize", eCmdHdlrSize, 0 }, + { "ipfreebind", eCmdHdlrInt, 0 }, + { "ruleset", eCmdHdlrString, 0 } +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; + +#include "im-helper.h" /* must be included AFTER the type definitions! */ + + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->next = NULL; + inst->pBindRuleset = NULL; + + inst->pszBindPort = NULL; + inst->pszBindAddr = NULL; + inst->pszBindDevice = NULL; + inst->pszBindRuleset = NULL; + inst->inputname = NULL; + inst->bAppendPortToInpname = 0; + inst->ratelimitBurst = 10000; /* arbitrary high limit */ + inst->ratelimitInterval = 0; /* off */ + inst->rcvbuf = 0; + inst->ipfreebind = IPFREEBIND_ENABLED_WITH_LOG; + inst->dfltTZ = NULL; + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = inst; + } else { + loadModConf->tail->next = inst; + loadModConf->tail = inst; + } + + *pinst = inst; +finalize_it: + RETiRet; +} + +/* This function is called when a new listener instace shall be added to + * the current config object via the legacy config system. It just shuffles + * all parameters to the listener in-memory instance. + * rgerhards, 2011-05-04 + */ +static rsRetVal addInstance(void __attribute__((unused)) *pVal, uchar *pNewVal) +{ + instanceConf_t *inst; + DEFiRet; + + CHKiRet(createInstance(&inst)); + CHKmalloc(inst->pszBindPort = ustrdup((pNewVal == NULL || *pNewVal == '\0') + ? (uchar*) "514" : pNewVal)); + if((cs.pszBindAddr == NULL) || (cs.pszBindAddr[0] == '\0')) { + inst->pszBindAddr = NULL; + } else { + CHKmalloc(inst->pszBindAddr = ustrdup(cs.pszBindAddr)); + } + if((cs.pszBindDevice == NULL) || (cs.pszBindDevice[0] == '\0')) { + inst->pszBindDevice= NULL; + } else { + CHKmalloc(inst->pszBindDevice = strdup(cs.pszBindDevice)); + } + if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) { + inst->pszBindRuleset = NULL; + } else { + CHKmalloc(inst->pszBindRuleset = ustrdup(cs.pszBindRuleset)); + } + +finalize_it: + free(pNewVal); + RETiRet; +} + + +/* This function is called when a new listener shall be added. It takes + * the instance config description, tries to bind the socket and, if that + * succeeds, adds it to the list of existing listen sockets. + */ +static rsRetVal +addListner(instanceConf_t *inst) +{ + DEFiRet; + uchar *bindAddr; + int *newSocks; + int iSrc; + struct lstn_s *newlcnfinfo; + uchar *bindName; + uchar *port; + uchar dispname[64], inpnameBuf[128]; + uchar *inputname; + + /* check which address to bind to. We could do this more compact, but have not + * done so in order to make the code more readable. -- rgerhards, 2007-12-27 + */ + if(inst->pszBindAddr == NULL) + bindAddr = NULL; + else if(inst->pszBindAddr[0] == '*' && inst->pszBindAddr[1] == '\0') + bindAddr = NULL; + else + bindAddr = inst->pszBindAddr; + bindName = (bindAddr == NULL) ? (uchar*)"*" : bindAddr; + port = (inst->pszBindPort == NULL || *inst->pszBindPort == '\0') ? (uchar*) "514" : inst->pszBindPort; + + DBGPRINTF("Trying to open syslog UDP ports at %s:%s.\n", bindName, inst->pszBindPort); + + newSocks = net.create_udp_socket(bindAddr, port, 1, inst->rcvbuf, 0, inst->ipfreebind, inst->pszBindDevice); + if(newSocks != NULL) { + /* we now need to add the new sockets to the existing set */ + /* ready to copy */ + for(iSrc = 1 ; iSrc <= newSocks[0] ; ++iSrc) { + struct sockaddr_in sa; + socklen_t salen = sizeof(sa); + const char *suffix; + CHKmalloc(newlcnfinfo = (struct lstn_s*) calloc(1, sizeof(struct lstn_s))); + newlcnfinfo->next = NULL; + newlcnfinfo->sock = newSocks[iSrc]; + newlcnfinfo->pRuleset = inst->pBindRuleset; + newlcnfinfo->dfltTZ = inst->dfltTZ; + newlcnfinfo->ratelimiter = NULL; + /* query socket IPv4 vs IPv6 */ + sa.sin_family = 0; /* just to keep CLANG static analyzer happy! */ + if(getsockname(newlcnfinfo->sock, (struct sockaddr*) &sa, &salen) != 0) { + suffix = "error_getting_AF..."; + } else { + if(sa.sin_family == AF_INET) { + suffix = "IPv4"; + } else if(sa.sin_family == AF_INET6) { + suffix = "IPv6"; + } else { + suffix = "AF_unknown"; + } + } + if(inst->inputname == NULL) { + inputname = (uchar*)"imudp"; + } else { + inputname = inst->inputname; + } + snprintf((char*)dispname, sizeof(dispname), "%s(%s/%s/%s)", + inputname, bindName, port, suffix); + dispname[sizeof(dispname)-1] = '\0'; /* just to be on the save side... */ + CHKiRet(ratelimitNew(&newlcnfinfo->ratelimiter, (char*)dispname, NULL)); + ratelimitSetLinuxLike(newlcnfinfo->ratelimiter, inst->ratelimitInterval, + inst->ratelimitBurst); + ratelimitSetThreadSafe(newlcnfinfo->ratelimiter); + if(inst->bAppendPortToInpname) { + snprintf((char*)inpnameBuf, sizeof(inpnameBuf), "%s%s", + inputname, port); + inpnameBuf[sizeof(inpnameBuf)-1] = '\0'; + inputname = inpnameBuf; + } + CHKiRet(prop.Construct(&newlcnfinfo->pInputName)); + CHKiRet(prop.SetString(newlcnfinfo->pInputName, + inputname, ustrlen(inputname))); + CHKiRet(prop.ConstructFinalize(newlcnfinfo->pInputName)); + /* support statistics gathering */ + CHKiRet(statsobj.Construct(&(newlcnfinfo->stats))); + CHKiRet(statsobj.SetName(newlcnfinfo->stats, dispname)); + CHKiRet(statsobj.SetOrigin(newlcnfinfo->stats, (uchar*)"imudp")); + STATSCOUNTER_INIT(newlcnfinfo->ctrSubmit, newlcnfinfo->mutCtrSubmit); + CHKiRet(statsobj.AddCounter(newlcnfinfo->stats, UCHAR_CONSTANT("submitted"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(newlcnfinfo->ctrSubmit))); + STATSCOUNTER_INIT(newlcnfinfo->ctrDisallowed, newlcnfinfo->mutCtrDisallowed); + CHKiRet(statsobj.AddCounter(newlcnfinfo->stats, UCHAR_CONSTANT("disallowed"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(newlcnfinfo->ctrDisallowed))); + CHKiRet(statsobj.ConstructFinalize(newlcnfinfo->stats)); + /* link to list. Order must be preserved to take care for + * conflicting matches. + */ + if(lcnfRoot == NULL) + lcnfRoot = newlcnfinfo; + if(lcnfLast == NULL) + lcnfLast = newlcnfinfo; + else { + lcnfLast->next = newlcnfinfo; + lcnfLast = newlcnfinfo; + } + } + } else { + LogError(0, NO_ERRCODE, "imudp: Could not create udp listener," + " ignoring port %s bind-address %s.", + port, bindAddr); + } + +finalize_it: + if(iRet != RS_RET_OK) { + if(newlcnfinfo != NULL) { + if(newlcnfinfo->ratelimiter != NULL) + ratelimitDestruct(newlcnfinfo->ratelimiter); + if(newlcnfinfo->pInputName != NULL) + prop.Destruct(&newlcnfinfo->pInputName); + if(newlcnfinfo->stats != NULL) + statsobj.Destruct(&newlcnfinfo->stats); + free(newlcnfinfo); + } + /* close the rest of the open sockets as there's + nowhere to put them */ + for(; iSrc <= newSocks[0]; iSrc++) { + close(newSocks[iSrc]); + } + } + + free(newSocks); + RETiRet; +} + + +static inline void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + LogError(0, NO_ERRCODE, "imudp: ruleset '%s' for %s:%s not found - " + "using default ruleset instead", inst->pszBindRuleset, + inst->pszBindAddr == NULL ? "*" : (char*) inst->pszBindAddr, + inst->pszBindPort); +} + + +/* This function processes received data. It provides unified handling + * in cases where recvmmsg() is available and not. + */ +static rsRetVal +processPacket(struct lstn_s *lstn, struct sockaddr_storage *frominetPrev, int *pbIsPermitted, + uchar *rcvBuf, ssize_t lenRcvBuf, struct syslogTime *stTime, time_t ttGenTime, + struct sockaddr_storage *frominet, socklen_t socklen, multi_submit_t *multiSub) +{ + DEFiRet; + smsg_t *pMsg = NULL; + + if(lenRcvBuf == 0) + FINALIZE; /* this looks a bit strange, but practice shows it happens... */ + + /* if we reach this point, we had a good receive and can process the packet received */ + /* check if we have a different sender than before, if so, we need to query some new values */ + if(bDoACLCheck) { + socklen = sizeof(struct sockaddr_storage); + if(net.CmpHost(frominet, frominetPrev, socklen) != 0) { + memcpy(frominetPrev, frominet, socklen); /* update cache indicator */ + /* Here we check if a host is permitted to send us syslog messages. If it isn't, + * we do not further process the message but log a warning (if we are + * configured to do this). However, if the check would require name resolution, + * it is postponed to the main queue. See also my blog post at + * http://blog.gerhards.net/2009/11/acls-imudp-and-accepting-messages.html + * rgerhards, 2009-11-16 + */ + *pbIsPermitted = net.isAllowedSender2((uchar*)"UDP", + (struct sockaddr *)frominet, "", 0); + + if(*pbIsPermitted == 0) { + DBGPRINTF("msg is not from an allowed sender\n"); + STATSCOUNTER_INC(lstn->ctrDisallowed, lstn->mutCtrDisallowed); + if(glbl.GetOptionDisallowWarning(runModConf->pConf)) { + LogError(0, NO_ERRCODE, + "imudp: UDP message from disallowed sender discarded"); + } + } + } + } else { + *pbIsPermitted = 1; /* no check -> everything permitted */ + } + + DBGPRINTF("recv(%d,%d),acl:%d,msg:%.*s\n", lstn->sock, (int) lenRcvBuf, *pbIsPermitted, + (int)lenRcvBuf, rcvBuf); + + if(*pbIsPermitted != 0) { + /* we now create our own message object and submit it to the queue */ + CHKiRet(msgConstructWithTime(&pMsg, stTime, ttGenTime)); + MsgSetRawMsg(pMsg, (char*)rcvBuf, lenRcvBuf); + MsgSetInputName(pMsg, lstn->pInputName); + MsgSetRuleset(pMsg, lstn->pRuleset); + MsgSetFlowControlType(pMsg, eFLOWCTL_NO_DELAY); + if(lstn->dfltTZ != NULL) + MsgSetDfltTZ(pMsg, (char*) lstn->dfltTZ); + pMsg->msgFlags = NEEDS_PARSING | PARSE_HOSTNAME | NEEDS_DNSRESOL; + if(*pbIsPermitted == 2) { + pMsg->msgFlags |= NEEDS_ACLCHK_U; /* request ACL check after resolution */ + } + if(runModConf->bPreserveCase) { + pMsg->msgFlags |= PRESERVE_CASE; /* preserve case of fromhost */ + } + CHKiRet(msgSetFromSockinfo(pMsg, frominet)); + CHKiRet(ratelimitAddMsg(lstn->ratelimiter, multiSub, pMsg)); + STATSCOUNTER_INC(lstn->ctrSubmit, lstn->mutCtrSubmit); + } + +finalize_it: + if(iRet != RS_RET_OK) { + if(pMsg != NULL && iRet != RS_RET_DISCARDMSG) { + msgDestruct(&pMsg); + } + } + + RETiRet; +} + + + + +/* The following "two" functions are helpers to runInput. Actually, it is + * just one function. Depending on whether or not we have recvmmsg(), + * an appropriate version is compiled (as such we need to maintain both!). + */ +#ifdef HAVE_RECVMMSG +static rsRetVal +processSocket(struct wrkrInfo_s *pWrkr, struct lstn_s *lstn, struct sockaddr_storage *frominetPrev, +int *pbIsPermitted) +{ + DEFiRet; + int iNbrTimeUsed; + time_t ttGenTime = 0; /* to avoid clang static analyzer false positive */ + /* note: we do never use this time, because we always get a + * requery below on first loop iteration */ + struct syslogTime stTime; + char errStr[1024]; + smsg_t *pMsgs[CONF_NUM_MULTISUB]; + multi_submit_t multiSub; + int nelem; + int i; + + multiSub.ppMsgs = pMsgs; + multiSub.maxElem = CONF_NUM_MULTISUB; + multiSub.nElem = 0; + iNbrTimeUsed = 0; + while(1) { /* loop is terminated if we have a "bad" receive, done below in the body */ + if(pWrkr->pThrd->bShallStop == RSTRUE) + ABORT_FINALIZE(RS_RET_FORCE_TERM); + memset(pWrkr->recvmsg_iov, 0, runModConf->batchSize * sizeof(struct iovec)); + memset(pWrkr->recvmsg_mmh, 0, runModConf->batchSize * sizeof(struct mmsghdr)); + for(i = 0 ; i < runModConf->batchSize ; ++i) { + pWrkr->recvmsg_iov[i].iov_base = pWrkr->pRcvBuf+(i*(iMaxLine+1)); + pWrkr->recvmsg_iov[i].iov_len = iMaxLine; + pWrkr->recvmsg_mmh[i].msg_hdr.msg_namelen = sizeof(struct sockaddr_storage); + pWrkr->recvmsg_mmh[i].msg_hdr.msg_name = &(pWrkr->frominet[i]); + pWrkr->recvmsg_mmh[i].msg_hdr.msg_iov = &(pWrkr->recvmsg_iov[i]); + pWrkr->recvmsg_mmh[i].msg_hdr.msg_iovlen = 1; + } + nelem = recvmmsg(lstn->sock, pWrkr->recvmsg_mmh, runModConf->batchSize, 0, NULL); + STATSCOUNTER_INC(pWrkr->ctrCall_recvmmsg, pWrkr->mutCtrCall_recvmmsg); + DBGPRINTF("imudp: recvmmsg returned %d\n", nelem); + if(nelem < 0 && errno == ENOSYS) { + /* be careful: some versions of valgrind do not support recvmmsg()! */ + DBGPRINTF("imudp: error ENOSYS on call to recvmmsg() - fall back to recvmsg\n"); + nelem = recvmsg(lstn->sock, &(pWrkr->recvmsg_mmh[0].msg_hdr), 0); + STATSCOUNTER_INC(pWrkr->ctrCall_recvmsg, pWrkr->mutCtrCall_recvmsg); + if(nelem >= 0) { + pWrkr->recvmsg_mmh[0].msg_len = nelem; + nelem = 1; + } + } + if(nelem < 0) { + if(errno != EINTR && errno != EAGAIN) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + DBGPRINTF("INET socket error: %d = %s.\n", errno, errStr); + LogError(errno, NO_ERRCODE, "imudp: error receiving on socket: %s", errStr); + } + ABORT_FINALIZE(RS_RET_ERR); + // this most often is NOT an error, state is not checked by caller! + } + + if((runModConf->iTimeRequery == 0) || (iNbrTimeUsed++ % runModConf->iTimeRequery) == 0) { + datetime.getCurrTime(&stTime, &ttGenTime, TIME_IN_LOCALTIME); + } + + pWrkr->ctrMsgsRcvd += nelem; + for(i = 0 ; i < nelem ; ++i) { + processPacket(lstn, frominetPrev, pbIsPermitted, + pWrkr->recvmsg_mmh[i].msg_hdr.msg_iov->iov_base, + pWrkr->recvmsg_mmh[i].msg_len, &stTime, ttGenTime, &(pWrkr->frominet[i]), + pWrkr->recvmsg_mmh[i].msg_hdr.msg_namelen, &multiSub); + } + } + +finalize_it: + multiSubmitFlush(&multiSub); + RETiRet; +} +#else /* we do not have recvmmsg() */ +/* This function is a helper to runInput. I have extracted it + * from the main loop just so that we do not have that large amount of code + * in a single place. This function takes a socket and pulls messages from + * it until the socket does not have any more waiting. + * rgerhards, 2008-01-08 + * We try to read from the file descriptor until there + * is no more data. This is done in the hope to get better performance + * out of the system. However, this also means that a descriptor + * monopolizes processing while it contains data. This can lead to + * data loss in other descriptors. However, if the system is incapable of + * handling the workload, we will loss data in any case. So it doesn't really + * matter where the actual loss occurs - it is always random, because we depend + * on scheduling order. -- rgerhards, 2008-10-02 + */ +static rsRetVal +processSocket(struct wrkrInfo_s *pWrkr, struct lstn_s *lstn, struct sockaddr_storage *frominetPrev, +int *pbIsPermitted) +{ + int iNbrTimeUsed; + time_t ttGenTime; + struct syslogTime stTime; + ssize_t lenRcvBuf; + struct sockaddr_storage frominet; + multi_submit_t multiSub; + smsg_t *pMsgs[CONF_NUM_MULTISUB]; + char errStr[1024]; + struct msghdr mh; + struct iovec iov[1]; + DEFiRet; + + multiSub.ppMsgs = pMsgs; + multiSub.maxElem = CONF_NUM_MULTISUB; + multiSub.nElem = 0; + iNbrTimeUsed = 0; + while(1) { /* loop is terminated if we have a bad receive, done below in the body */ + if(pWrkr->pThrd->bShallStop == RSTRUE) + ABORT_FINALIZE(RS_RET_FORCE_TERM); + memset(iov, 0, sizeof(iov)); + iov[0].iov_base = pWrkr->pRcvBuf; + iov[0].iov_len = iMaxLine; + memset(&mh, 0, sizeof(mh)); + mh.msg_name = &frominet; + mh.msg_namelen = sizeof(struct sockaddr_storage); + mh.msg_iov = iov; + mh.msg_iovlen = 1; + lenRcvBuf = recvmsg(lstn->sock, &mh, 0); + STATSCOUNTER_INC(pWrkr->ctrCall_recvmsg, pWrkr->mutCtrCall_recvmsg); + if(lenRcvBuf < 0) { + if(errno != EINTR && errno != EAGAIN) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + DBGPRINTF("INET socket error: %d = %s.\n", errno, errStr); + LogError(errno, NO_ERRCODE, "imudp: error receiving on socket: %s", errStr); + } + ABORT_FINALIZE(RS_RET_ERR); + // this most often is NOT an error, state is not checked by caller! + } + + ++pWrkr->ctrMsgsRcvd; + if((runModConf->iTimeRequery == 0) || (iNbrTimeUsed++ % runModConf->iTimeRequery) == 0) { + datetime.getCurrTime(&stTime, &ttGenTime, TIME_IN_LOCALTIME); + } + + CHKiRet(processPacket(lstn, frominetPrev, pbIsPermitted, pWrkr->pRcvBuf, lenRcvBuf, &stTime, + ttGenTime, &frominet, mh.msg_namelen, &multiSub)); + } + + +finalize_it: + multiSubmitFlush(&multiSub); + RETiRet; +} +#endif /* #ifdef HAVE_RECVMMSG */ + + +/* check configured scheduling priority. + * Precondition: iSchedPolicy must have been set + */ +static rsRetVal +checkSchedulingPriority(modConfData_t *modConf) +{ + DEFiRet; + +#ifdef HAVE_SCHED_GET_PRIORITY_MAX + if( modConf->iSchedPrio < sched_get_priority_min(modConf->iSchedPolicy) + || modConf->iSchedPrio > sched_get_priority_max(modConf->iSchedPolicy)) { + LogError(0, NO_ERRCODE, + "imudp: scheduling priority %d out of range (%d - %d)" + " for scheduling policy '%s' - ignoring settings", + modConf->iSchedPrio, + sched_get_priority_min(modConf->iSchedPolicy), + sched_get_priority_max(modConf->iSchedPolicy), + modConf->pszSchedPolicy); + ABORT_FINALIZE(RS_RET_VALIDATION_RUN); + } +finalize_it: +#endif + RETiRet; +} + + +/* check scheduling policy string and, if valid, set its + * numeric equivalent in current load config + */ +static rsRetVal +checkSchedulingPolicy(modConfData_t *modConf) +{ + DEFiRet; + + if (0) { /* trick to use conditional compilation */ +#ifdef SCHED_FIFO + } else if (!strcasecmp((char*)modConf->pszSchedPolicy, "fifo")) { + modConf->iSchedPolicy = SCHED_FIFO; +#endif +#ifdef SCHED_RR + } else if (!strcasecmp((char*)modConf->pszSchedPolicy, "rr")) { + modConf->iSchedPolicy = SCHED_RR; +#endif +#ifdef SCHED_OTHER + } else if (!strcasecmp((char*)modConf->pszSchedPolicy, "other")) { + modConf->iSchedPolicy = SCHED_OTHER; +#endif + } else { + LogError(errno, NO_ERRCODE, + "imudp: invalid scheduling policy '%s' " + "- ignoring setting", modConf->pszSchedPolicy); + ABORT_FINALIZE(RS_RET_ERR_SCHED_PARAMS); + } +finalize_it: + RETiRet; +} + +/* checks scheduling parameters during config check phase */ +static rsRetVal +checkSchedParam(modConfData_t *modConf) +{ + DEFiRet; + + if(modConf->pszSchedPolicy != NULL && modConf->iSchedPrio == SCHED_PRIO_UNSET) { + LogError(0, RS_RET_ERR_SCHED_PARAMS, + "imudp: scheduling policy set, but without priority - ignoring settings"); + ABORT_FINALIZE(RS_RET_ERR_SCHED_PARAMS); + } else if(modConf->pszSchedPolicy == NULL && modConf->iSchedPrio != SCHED_PRIO_UNSET) { + LogError(0, RS_RET_ERR_SCHED_PARAMS, + "imudp: scheduling priority set, but without policy - ignoring settings"); + ABORT_FINALIZE(RS_RET_ERR_SCHED_PARAMS); + } else if(modConf->pszSchedPolicy != NULL && modConf->iSchedPrio != SCHED_PRIO_UNSET) { + /* we have parameters set, so check them */ + CHKiRet(checkSchedulingPolicy(modConf)); + CHKiRet(checkSchedulingPriority(modConf)); + } else { /* nothing set */ + modConf->iSchedPrio = SCHED_PRIO_UNSET; /* prevents doing the activation call */ + } +#ifndef HAVE_PTHREAD_SETSCHEDPARAM + LogError(0, NO_ERRCODE, + "imudp: cannot set thread scheduling policy, " + "pthread_setschedparam() not available"); + ABORT_FINALIZE(RS_RET_ERR_SCHED_PARAMS); +#endif + +finalize_it: + if(iRet != RS_RET_OK) + modConf->iSchedPrio = SCHED_PRIO_UNSET; /* prevents doing the activation call */ + + RETiRet; +} + +/* set the configured scheduling policy (if possible) */ +static rsRetVal +setSchedParams(modConfData_t *modConf) +{ + DEFiRet; + +# ifdef HAVE_PTHREAD_SETSCHEDPARAM + int err; + struct sched_param sparam; + + if(modConf->iSchedPrio == SCHED_PRIO_UNSET) + FINALIZE; + + memset(&sparam, 0, sizeof sparam); + sparam.sched_priority = modConf->iSchedPrio; + dbgprintf("imudp trying to set sched policy to '%s', prio %d\n", + modConf->pszSchedPolicy, modConf->iSchedPrio); + err = pthread_setschedparam(pthread_self(), modConf->iSchedPolicy, &sparam); + if(err != 0) { + LogError(err, NO_ERRCODE, "imudp: pthread_setschedparam() failed - ignoring"); + } +finalize_it: +# endif + + RETiRet; +} + + +/* This function implements the main reception loop. Depending on the environment, + * we either use the traditional (but slower) select() or the Linux-specific epoll() + * interface. ./configure settings control which one is used. + * rgerhards, 2009-09-09 + */ +#if defined(HAVE_EPOLL_CREATE1) || defined(HAVE_EPOLL_CREATE) +#define NUM_EPOLL_EVENTS 10 +static rsRetVal +rcvMainLoop(struct wrkrInfo_s *const __restrict__ pWrkr) +{ + DEFiRet; + int nfds; + int efd; + int i; + struct sockaddr_storage frominetPrev; + int bIsPermitted; + struct epoll_event *udpEPollEvt = NULL; + struct epoll_event currEvt[NUM_EPOLL_EVENTS]; + char errStr[1024]; + struct lstn_s *lstn; + int nLstn; + + /* start "name caching" algo by making sure the previous system indicator + * is invalidated. + */ + bIsPermitted = 0; + memset(&frominetPrev, 0, sizeof(frominetPrev)); + + /* count num listeners -- do it here in order to avoid inconsistency */ + nLstn = 0; + for(lstn = lcnfRoot ; lstn != NULL ; lstn = lstn->next) + ++nLstn; + + if(nLstn == 0) { + LogError(errno, RS_RET_ERR, + "imudp error: we have 0 listeners, terminating" + "worker thread"); + ABORT_FINALIZE(RS_RET_ERR); + } + CHKmalloc(udpEPollEvt = calloc(nLstn, sizeof(struct epoll_event))); + +#if defined(EPOLL_CLOEXEC) && defined(HAVE_EPOLL_CREATE1) + DBGPRINTF("imudp uses epoll_create1()\n"); + efd = epoll_create1(EPOLL_CLOEXEC); + if(efd < 0 && errno == ENOSYS) +#endif + { + DBGPRINTF("imudp uses epoll_create()\n"); + efd = epoll_create(NUM_EPOLL_EVENTS); + } + + if(efd < 0) { + DBGPRINTF("epoll_create1() could not create fd\n"); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + /* fill the epoll set - we need to do this only once, as the set + * can not change dyamically. + */ + i = 0; + for(lstn = lcnfRoot ; lstn != NULL ; lstn = lstn->next) { + if(lstn->sock != -1) { + udpEPollEvt[i].events = EPOLLIN | EPOLLET; + udpEPollEvt[i].data.ptr = lstn; + if(epoll_ctl(efd, EPOLL_CTL_ADD, lstn->sock, &(udpEPollEvt[i])) < 0) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(errno, NO_ERRCODE, "epoll_ctrl failed on fd %d with %s\n", + lstn->sock, errStr); + } + } + i++; + } + + while(1) { + /* wait for io to become ready */ + nfds = epoll_wait(efd, currEvt, NUM_EPOLL_EVENTS, -1); + DBGPRINTF("imudp: epoll_wait() returned with %d fds\n", nfds); + + if(pWrkr->pThrd->bShallStop == RSTRUE) + break; /* terminate input! */ + + for(i = 0 ; i < nfds ; ++i) { + processSocket(pWrkr, currEvt[i].data.ptr, &frominetPrev, &bIsPermitted); + } + if(pWrkr->pThrd->bShallStop == RSTRUE) + break; /* terminate input! */ + } + +finalize_it: + if(udpEPollEvt != NULL) + free(udpEPollEvt); + + RETiRet; +} +#else /* #if HAVE_EPOLL_CREATE1 */ +/* this is the code for the select() interface */ +static rsRetVal ATTR_NONNULL() +rcvMainLoop(struct wrkrInfo_s *const __restrict__ pWrkr) +{ + DEFiRet; + int nfds; + struct sockaddr_storage frominetPrev; + int bIsPermitted; + int i = 0; + struct lstn_s *lstn; + + DBGPRINTF("imudp uses poll() [ex-select]\n"); + /* start "name caching" algo by making sure the previous system indicator + * is invalidated. */ + bIsPermitted = 0; + memset(&frominetPrev, 0, sizeof(frominetPrev)); + + /* setup poll() subsystem */ + int nfd = 0; + for(lstn = lcnfRoot ; lstn != NULL ; lstn = lstn->next) { + if(lstn->sock != -1) { + if(Debug) { + net.debugListenInfo(lstn->sock, (char*)"UDP"); + } + ++nfd; + } + } + struct pollfd *const pollfds = calloc(nfd, sizeof(struct pollfd)); + CHKmalloc(pollfds); + + for(lstn = lcnfRoot ; lstn != NULL ; lstn = lstn->next) { + assert(i < nfd); + if (lstn->sock != -1) { + pollfds[i].fd = lstn->sock; + pollfds[i].events = POLLIN; + ++i; + } + } + + while(1) { + DBGPRINTF("--------imudp calling poll() on %d fds\n", nfd); + nfds = poll(pollfds, nfd, -1); + if(glbl.GetGlobalInputTermState() == 1) + break; /* terminate input! */ + + if(nfds < 0) { + if(errno == EINTR) { + DBGPRINTF("imudp: EINTR occurred\n"); + } else { + LogMsg(errno, RS_RET_POLL_ERR, LOG_WARNING, "imudp: poll " + "system call failed, may cause further troubles"); + } + nfds = 0; + } + + i = 0; + for(lstn = lcnfRoot ; nfds && lstn != NULL ; lstn = lstn->next) { + assert(i < nfd); + if(lstn->sock != -1) { + if(glbl.GetGlobalInputTermState() == 1) + ABORT_FINALIZE(RS_RET_FORCE_TERM); /* terminate input! */ + if(pollfds[i].revents & POLLIN) { + processSocket(pWrkr, lstn, &frominetPrev, &bIsPermitted); + --nfds; + } + ++i; + } + } + /* end of a run, back to loop for next recv() */ + } + +finalize_it: + RETiRet; +} +#endif /* #if HAVE_EPOLL_CREATE1 */ + + +static rsRetVal +createListner(es_str_t *port, struct cnfparamvals *pvals) +{ + instanceConf_t *inst; + int i; + int bAppendPortUsed = 0; + DEFiRet; + + CHKiRet(createInstance(&inst)); + inst->pszBindPort = (uchar*)es_str2cstr(port, NULL); + for(i = 0 ; i < inppblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(inppblk.descr[i].name, "port")) { + continue; /* array, handled by caller */ + } else if(!strcmp(inppblk.descr[i].name, "name")) { + if(inst->inputname != NULL) { + LogError(0, RS_RET_INVALID_PARAMS, "imudp: name and inputname " + "parameter specified - only one can be used"); + ABORT_FINALIZE(RS_RET_INVALID_PARAMS); + } + inst->inputname = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "name.appendport")) { + if(bAppendPortUsed) { + LogError(0, RS_RET_INVALID_PARAMS, "imudp: name.appendport and " + "inputname.appendport parameter specified - only one can be used"); + ABORT_FINALIZE(RS_RET_INVALID_PARAMS); + } + inst->bAppendPortToInpname = (int) pvals[i].val.d.n; + bAppendPortUsed = 1; + } else if(!strcmp(inppblk.descr[i].name, "inputname")) { + LogError(0, RS_RET_DEPRECATED , "imudp: deprecated parameter inputname " + "used. Suggest to use name instead"); + if(inst->inputname != NULL) { + LogError(0, RS_RET_INVALID_PARAMS, "imudp: name and inputname " + "parameter specified - only one can be used"); + ABORT_FINALIZE(RS_RET_INVALID_PARAMS); + } + inst->inputname = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "inputname.appendport")) { + LogError(0, RS_RET_DEPRECATED , "imudp: deprecated parameter inputname.appendport " + "used. Suggest to use name.appendport instead"); + if(bAppendPortUsed) { + LogError(0, RS_RET_INVALID_PARAMS, "imudp: name.appendport and " + "inputname.appendport parameter specified - only one can be used"); + ABORT_FINALIZE(RS_RET_INVALID_PARAMS); + } + bAppendPortUsed = 1; + inst->bAppendPortToInpname = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "defaulttz")) { + inst->dfltTZ = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "address")) { + inst->pszBindAddr = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "device")) { + inst->pszBindDevice = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "ratelimit.burst")) { + inst->ratelimitBurst = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ratelimit.interval")) { + inst->ratelimitInterval = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "rcvbufsize")) { + const uint64_t val = pvals[i].val.d.n; + if(val > 1024 * 1024 * 1024) { + LogError(0, RS_RET_MISSING_CNFPARAMS, + "imudp: rcvbufsize maximum is 1 GiB, using " + "default instead"); + } else { + inst->rcvbuf = (int) val; + } + } else if(!strcmp(inppblk.descr[i].name, "ipfreebind")) { + inst->ipfreebind = (int) pvals[i].val.d.n; + } else { + dbgprintf("imudp: program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + } +finalize_it: + RETiRet; +} + + +BEGINnewInpInst + struct cnfparamvals *pvals; + int i; + int portIdx; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imudp)\n"); + + if((pvals = nvlstGetParams(lst, &inppblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + if(Debug) { + dbgprintf("input param blk in imudp:\n"); + cnfparamsPrint(&inppblk, pvals); + } + + portIdx = cnfparamGetIdx(&inppblk, "port"); + assert(portIdx != -1); + for(i = 0 ; i < pvals[portIdx].val.d.ar->nmemb ; ++i) { + createListner(pvals[portIdx].val.d.ar->arr[i], pvals); + } + +finalize_it: +CODE_STD_FINALIZERnewInpInst + cnfparamvalsDestruct(pvals, &inppblk); +ENDnewInpInst + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + /* init our settings */ + loadModConf->configSetViaV2Method = 0; + loadModConf->wrkrMax = 1; /* conservative, but least msg reordering */ + loadModConf->batchSize = BATCH_SIZE_DFLT; + loadModConf->iTimeRequery = TIME_REQUERY_DFLT; + loadModConf->iSchedPrio = SCHED_PRIO_UNSET; + loadModConf->pszSchedPolicy = NULL; + loadModConf->bPreserveCase = 0; /* off */ + bLegacyCnfModGlobalsPermitted = 1; + /* init legacy config vars */ + cs.pszBindRuleset = NULL; + cs.pszSchedPolicy = NULL; + cs.pszBindAddr = NULL; + cs.pszBindDevice = NULL; + cs.iSchedPrio = SCHED_PRIO_UNSET; + cs.iTimeRequery = TIME_REQUERY_DFLT; +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; + int wrkrMax; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "imudp: error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for imudp:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "timerequery")) { + loadModConf->iTimeRequery = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "batchsize")) { + loadModConf->batchSize = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "schedulingpriority")) { + loadModConf->iSchedPrio = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "schedulingpolicy")) { + loadModConf->pszSchedPolicy = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "threads")) { + wrkrMax = (int) pvals[i].val.d.n; + if(wrkrMax > MAX_WRKR_THREADS) { + LogError(0, RS_RET_PARAM_ERROR, "imudp: configured for %d" + "worker threads, but maximum permitted is %d", + wrkrMax, MAX_WRKR_THREADS); + loadModConf->wrkrMax = MAX_WRKR_THREADS; + } else { + loadModConf->wrkrMax = wrkrMax; + } + } else if(!strcmp(modpblk.descr[i].name, "preservecase")) { + loadModConf->bPreserveCase = (int) pvals[i].val.d.n; + } else { + dbgprintf("imudp: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + + /* remove all of our legacy handlers, as they can not used in addition + * the the new-style config method. + */ + bLegacyCnfModGlobalsPermitted = 0; + loadModConf->configSetViaV2Method = 1; + +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(!loadModConf->configSetViaV2Method) { + /* persist module-specific settings from legacy config system */ + loadModConf->iSchedPrio = cs.iSchedPrio; + loadModConf->iTimeRequery = cs.iTimeRequery; + if((cs.pszSchedPolicy != NULL) && (cs.pszSchedPolicy[0] != '\0')) { + CHKmalloc(loadModConf->pszSchedPolicy = ustrdup(cs.pszSchedPolicy)); + } + } + +finalize_it: + loadModConf = NULL; /* done loading */ + /* free legacy config vars */ + free(cs.pszBindRuleset); + free(cs.pszSchedPolicy); + free(cs.pszBindAddr); + free(cs.pszBindDevice); +ENDendCnfLoad + + +BEGINcheckCnf + instanceConf_t *inst; +CODESTARTcheckCnf + checkSchedParam(pModConf); /* this can not cause fatal errors */ + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + std_checkRuleset(pModConf, inst); + } + if(pModConf->root == NULL) { + LogError(0, RS_RET_NO_LISTNERS , "imudp: module loaded, but " + "no listeners defined - no input will be gathered"); + iRet = RS_RET_NO_LISTNERS; + } +ENDcheckCnf + + +BEGINactivateCnfPrePrivDrop + instanceConf_t *inst; +CODESTARTactivateCnfPrePrivDrop + runModConf = pModConf; + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + addListner(inst); + } + /* if we could not set up any listeners, there is no point in running... */ + if(lcnfRoot == NULL) { + LogError(0, NO_ERRCODE, "imudp: no listeners could be started, " + "input not activated.\n"); + ABORT_FINALIZE(RS_RET_NO_RUN); + } + +finalize_it: +ENDactivateCnfPrePrivDrop + + +BEGINactivateCnf + int i; + int lenRcvBuf; +CODESTARTactivateCnf + /* caching various settings */ + iMaxLine = glbl.GetMaxLine(runConf); + lenRcvBuf = iMaxLine + 1; +# ifdef HAVE_RECVMMSG + lenRcvBuf *= runModConf->batchSize; +# endif + DBGPRINTF("imudp: config params iMaxLine %d, lenRcvBuf %d\n", iMaxLine, lenRcvBuf); + for(i = 0 ; i < runModConf->wrkrMax ; ++i) { +# ifdef HAVE_RECVMMSG + CHKmalloc(wrkrInfo[i].recvmsg_iov = malloc(runModConf->batchSize * sizeof(struct iovec))); + CHKmalloc(wrkrInfo[i].recvmsg_mmh = malloc(runModConf->batchSize * sizeof(struct mmsghdr))); + CHKmalloc(wrkrInfo[i].frominet = malloc(runModConf->batchSize * sizeof(struct sockaddr_storage))); +# endif + CHKmalloc(wrkrInfo[i].pRcvBuf = malloc(lenRcvBuf)); + wrkrInfo[i].id = i; + } +finalize_it: +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; +CODESTARTfreeCnf + for(inst = pModConf->root ; inst != NULL ; ) { + free(inst->pszBindPort); + free(inst->pszBindAddr); + free(inst->pszBindDevice); + free(inst->pszBindRuleset); + free(inst->inputname); + free(inst->dfltTZ); + del = inst; + inst = inst->next; + free(del); + } +ENDfreeCnf + + +static void * +wrkr(void *myself) +{ + struct wrkrInfo_s *pWrkr = (struct wrkrInfo_s*) myself; + uchar thrdName[32]; + + snprintf((char*)thrdName, sizeof(thrdName), "imudp(w%d)", pWrkr->id); +# if defined(HAVE_PRCTL) && defined(PR_SET_NAME) + /* set thread name - we ignore if the call fails, has no harsh consequences... */ + if(prctl(PR_SET_NAME, thrdName, 0, 0, 0) != 0) { + DBGPRINTF("prctl failed, not setting thread name for '%s'\n", thrdName); + } +# endif + dbgOutputTID((char*)thrdName); + + /* Note well: the setting of scheduling parameters will not work + * when we dropped privileges (if the user is not sufficiently + * privileged, of course). Howerver, we can't change the + * scheduling params in PrePrivDrop(), as at that point our thread + * is not yet created. So at least as an interim solution, we do + * NOT support both setting sched parameters and dropping + * privileges within the same instance. + */ + setSchedParams(runModConf); + + /* support statistics gathering */ + statsobj.Construct(&(pWrkr->stats)); + statsobj.SetName(pWrkr->stats, thrdName); + statsobj.SetOrigin(pWrkr->stats, (uchar*)"imudp"); + STATSCOUNTER_INIT(pWrkr->ctrCall_recvmmsg, pWrkr->mutCtrCall_recvmmsg); + statsobj.AddCounter(pWrkr->stats, UCHAR_CONSTANT("called.recvmmsg"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pWrkr->ctrCall_recvmmsg)); + STATSCOUNTER_INIT(pWrkr->ctrCall_recvmsg, pWrkr->mutCtrCall_recvmsg); + statsobj.AddCounter(pWrkr->stats, UCHAR_CONSTANT("called.recvmsg"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pWrkr->ctrCall_recvmsg)); + STATSCOUNTER_INIT(pWrkr->ctrMsgsRcvd, pWrkr->mutCtrMsgsRcvd); + statsobj.AddCounter(pWrkr->stats, UCHAR_CONSTANT("msgs.received"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pWrkr->ctrMsgsRcvd)); + statsobj.ConstructFinalize(pWrkr->stats); + + rcvMainLoop(pWrkr); + + /* cleanup */ + return NULL; +} + +/* This function is called to gather input. + * In essence, it just starts the pool of workers. To save resources, + * we run one of the workers on our own thread -- otherwise that thread would + * just idle around and wait for the workers to finish. + */ +BEGINrunInput + int i; + pthread_attr_t wrkrThrdAttr; +CODESTARTrunInput + pthread_attr_init(&wrkrThrdAttr); + pthread_attr_setstacksize(&wrkrThrdAttr, 4096*1024); + for(i = 0 ; i < runModConf->wrkrMax - 1 ; ++i) { + wrkrInfo[i].pThrd = pThrd; + pthread_create(&wrkrInfo[i].tid, &wrkrThrdAttr, wrkr, &(wrkrInfo[i])); + } + pthread_attr_destroy(&wrkrThrdAttr); + + wrkrInfo[i].pThrd = pThrd; + wrkrInfo[i].id = i; + wrkr(&wrkrInfo[i]); + + for(i = 0 ; i < runModConf->wrkrMax - 1 ; ++i) { + pthread_kill(wrkrInfo[i].tid, SIGTTIN); + } + for(i = 0 ; i < runModConf->wrkrMax - 1 ; ++i) { + pthread_join(wrkrInfo[i].tid, NULL); + } +ENDrunInput + + +/* initialize and return if will run or not */ +BEGINwillRun +CODESTARTwillRun + net.PrintAllowedSenders(1); /* UDP */ + net.HasRestrictions(UCHAR_CONSTANT("UDP"), &bDoACLCheck); /* UDP */ +ENDwillRun + + +BEGINafterRun + struct lstn_s *lstn, *lstnDel; + int i; +CODESTARTafterRun + /* do cleanup here */ + net.clearAllowedSenders((uchar*)"UDP"); + for(lstn = lcnfRoot ; lstn != NULL ; ) { + statsobj.Destruct(&(lstn->stats)); + ratelimitDestruct(lstn->ratelimiter); + close(lstn->sock); + prop.Destruct(&lstn->pInputName); + lstnDel = lstn; + lstn = lstn->next; + free(lstnDel); + } + lcnfRoot = lcnfLast = NULL; + for(i = 0 ; i < runModConf->wrkrMax ; ++i) { +# ifdef HAVE_RECVMMSG + free(wrkrInfo[i].recvmsg_iov); + free(wrkrInfo[i].recvmsg_mmh); + free(wrkrInfo[i].frominet); +# endif + free(wrkrInfo[i].pRcvBuf); + } +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + /* release what we no longer need */ + objRelease(glbl, CORE_COMPONENT); + objRelease(statsobj, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); + objRelease(net, LM_NET_FILENAME); +ENDmodExit + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + free(cs.pszBindAddr); + cs.pszBindAddr = NULL; + free(cs.pszBindDevice); + cs.pszBindDevice = NULL; + free(cs.pszSchedPolicy); + cs.pszSchedPolicy = NULL; + free(cs.pszBindRuleset); + cs.pszBindRuleset = NULL; + cs.iSchedPrio = SCHED_PRIO_UNSET; + cs.iTimeRequery = TIME_REQUERY_DFLT;/* the default is to query only every second time */ + return RS_RET_OK; +} + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + CHKiRet(objUse(net, LM_NET_FILENAME)); + + DBGPRINTF("imudp: version %s initializing\n", VERSION); +# ifdef HAVE_RECVMMSG + DBGPRINTF("imdup: support for recvmmsg() present\n"); +# endif + + /* register config file handlers */ + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputudpserverbindruleset", 0, eCmdHdlrGetWord, + NULL, &cs.pszBindRuleset, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"udpserverrun", 0, eCmdHdlrGetWord, + addInstance, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"udpserveraddress", 0, eCmdHdlrGetWord, + NULL, &cs.pszBindAddr, STD_LOADABLE_MODULE_ID)); + /* module-global config params - will be disabled in configs that are loaded + * via module(...). + */ + CHKiRet(regCfSysLineHdlr2((uchar *)"imudpschedulingpolicy", 0, eCmdHdlrGetWord, + NULL, &cs.pszSchedPolicy, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"imudpschedulingpriority", 0, eCmdHdlrInt, + NULL, &cs.iSchedPrio, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"udpservertimerequery", 0, eCmdHdlrInt, + NULL, &cs.iTimeRequery, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit +/* vim:set ai: + */ diff --git a/plugins/imuxsock/Makefile.am b/plugins/imuxsock/Makefile.am new file mode 100644 index 0000000..6bf9c20 --- /dev/null +++ b/plugins/imuxsock/Makefile.am @@ -0,0 +1,11 @@ +pkglib_LTLIBRARIES = imuxsock.la + +imuxsock_la_SOURCES = imuxsock.c +imuxsock_la_CPPFLAGS = -DSD_EXPORT_SYMBOLS -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +imuxsock_la_LDFLAGS = -module -avoid-version +imuxsock_la_LIBADD = + +if ENABLE_LIBLOGGING_STDLOG +imuxsock_la_CPPFLAGS += $(LIBLOGGING_STDLOG_CFLAGS) +imuxsock_la_LDFLAGS += $(LIBLOGGING_STDLOG_LIBS) +endif diff --git a/plugins/imuxsock/Makefile.in b/plugins/imuxsock/Makefile.in new file mode 100644 index 0000000..88cca18 --- /dev/null +++ b/plugins/imuxsock/Makefile.in @@ -0,0 +1,799 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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GmbH. + * + * This file is part of rsyslog. + * + * Rsyslog is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Rsyslog is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Rsyslog. If not, see <http://www.gnu.org/licenses/>. + * + * A copy of the GPL can be found in the file "COPYING" in this distribution. + */ +#ifdef __sun +#define _XPG4_2 +#endif +#include "config.h" +#include <stdlib.h> +#include <stdio.h> +#include <ctype.h> +#include <assert.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> +#include <poll.h> +#include <sys/stat.h> +#include <sys/un.h> +#include <sys/socket.h> +#ifdef HAVE_LIBSYSTEMD +# include <systemd/sd-daemon.h> +#endif +#if defined(__FreeBSD__) + #include <sys/param.h> +#endif +#include "rsyslog.h" +#include "dirty.h" +#include "cfsysline.h" +#include "unicode-helper.h" +#include "module-template.h" +#include "srUtils.h" +#include "errmsg.h" +#include "net.h" +#include "glbl.h" +#include "msg.h" +#include "parser.h" +#include "prop.h" +#include "debug.h" +#include "ruleset.h" +#include "unlimited_select.h" +#include "statsobj.h" +#include "datetime.h" +#include "hashtable.h" +#include "ratelimit.h" + + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imuxsock") + +/* defines */ +#ifndef _PATH_LOG +#ifdef BSD +#define _PATH_LOG "/var/run/log" +#else +#define _PATH_LOG "/dev/log" +#endif +#endif +#ifndef SYSTEMD_JOURNAL +#define SYSTEMD_JOURNAL "/run/systemd/journal" +#endif +#ifndef SYSTEMD_PATH_LOG +#define SYSTEMD_PATH_LOG SYSTEMD_JOURNAL "/syslog" +#endif +#define UNSET -1 /* to indicate a value has not been configured */ + +/* forward definitions */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + +#if defined(_AIX) +#define ucred ucred_t +#endif +/* emulate struct ucred for platforms that do not have it */ +#ifndef HAVE_SCM_CREDENTIALS +struct ucred { int pid; uid_t uid; gid_t gid; }; +#endif + +/* handle some defines missing on more than one platform */ +#ifndef SUN_LEN +#define SUN_LEN(su) \ + (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path)) +#endif +/* Module static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(prop) +DEFobjCurrIf(net) +DEFobjCurrIf(parser) +DEFobjCurrIf(datetime) +DEFobjCurrIf(statsobj) +DEFobjCurrIf(ruleset) + + +statsobj_t *modStats; +STATSCOUNTER_DEF(ctrSubmit, mutCtrSubmit) +STATSCOUNTER_DEF(ctrLostRatelimit, mutCtrLostRatelimit) +STATSCOUNTER_DEF(ctrNumRatelimiters, mutCtrNumRatelimiters) + + +/* a very simple "hash function" for process IDs - we simply use the + * pid itself: it is quite expected that all pids may log some time, but + * from a collision point of view it is likely that long-running daemons + * start early and so will stay right in the top spots of the + * collision list. + */ +static unsigned int +hash_from_key_fn(void *k) +{ + return((unsigned) *((pid_t*) k)); +} + +static int +key_equals_fn(void *key1, void *key2) +{ + return *((pid_t*) key1) == *((pid_t*) key2); +} + + +/* structure to describe a specific listener */ +typedef struct lstn_s { + uchar *sockName; /* read-only after startup */ + prop_t *hostName; /* host-name override - if set, use this instead of actual name */ + int fd; /* read-only after startup */ + int flags; /* should parser parse host name? read-only after startup */ + int flowCtl; /* flow control settings for this socket */ + unsigned int ratelimitInterval; + unsigned int ratelimitBurst; + ratelimit_t *dflt_ratelimiter;/*ratelimiter to apply if none else is to be used */ + intTiny ratelimitSev; /* severity level (and below) for which rate-limiting shall apply */ + struct hashtable *ht; /* our hashtable for rate-limiting */ + sbool bParseHost; /* should parser parse host name? read-only after startup */ + sbool bCreatePath; /* auto-creation of socket directory? */ + sbool bUseCreds; /* pull original creator credentials from socket */ + sbool bAnnotate; /* annotate events with trusted properties */ + sbool bParseTrusted; /* parse trusted properties */ + sbool bWritePid; /* write original PID into tag */ + sbool bDiscardOwnMsgs; /* discard messages that originated from ourselves */ + sbool bUseSysTimeStamp; /* use timestamp from system (instead of from message) */ + sbool bUnlink; /* unlink&re-create socket at start and end of processing */ + sbool bUseSpecialParser;/* use "canned" log socket parser instead of parser chain? */ + ruleset_t *pRuleset; +} lstn_t; +static lstn_t *listeners; + +static prop_t *pLocalHostIP = NULL; /* there is only one global IP for all internally-generated messages */ +static prop_t *pInputName = NULL; /* our inputName currently is always "imuxsock", and this will hold it */ +static int startIndexUxLocalSockets; /* process fd from that index on (used to + * suppress local logging. rgerhards 2005-08-01 + * read-only after startup + */ +static int nfd = 1; /* number of active unix sockets (socket 0 is always reserved for the system + socket, even if it is not enabled. */ +static int sd_fds = 0; /* number of systemd activated sockets */ + +#if (defined(__FreeBSD__) && (__FreeBSD_version >= 1200061)) + #define DFLT_bUseSpecialParser 0 +#else + #define DFLT_bUseSpecialParser 1 +#endif +#define DFLT_bCreatePath 0 +#define DFLT_ratelimitInterval 0 +#define DFLT_ratelimitBurst 200 +#define DFLT_ratelimitSeverity 1 /* do not rate-limit emergency messages */ +/* config vars for the legacy config system */ +static struct configSettings_s { + int bOmitLocalLogging; + uchar *pLogSockName; + uchar *pLogHostName; /* host name to use with this socket */ + int bUseFlowCtl; /* use flow control or not (if yes, only LIGHT is used!) */ + int bUseFlowCtlSysSock; + int bIgnoreTimestamp; /* ignore timestamps present in the incoming message? */ + int bIgnoreTimestampSysSock; + int bUseSysTimeStamp; /* use timestamp from system (rather than from message) */ + int bUseSysTimeStampSysSock; /* same, for system log socket */ + int bWritePid; /* use credentials from recvmsg() and fixup PID in TAG */ + int bWritePidSysSock; /* use credentials from recvmsg() and fixup PID in TAG */ + int bCreatePath; /* auto-create socket path? */ + unsigned int ratelimitInterval; /* interval in seconds, 0 = off */ + unsigned int ratelimitIntervalSysSock; + unsigned int ratelimitBurst; /* max nbr of messages in interval */ + unsigned int ratelimitBurstSysSock; + int ratelimitSeverity; + int ratelimitSeveritySysSock; + int bAnnotate; /* annotate trusted properties */ + int bAnnotateSysSock; /* same, for system log socket */ + int bParseTrusted; /* parse trusted properties */ +} cs; + +/* config vars for the v2 config system (rsyslog v6+) */ +struct instanceConf_s { + uchar *sockName; + uchar *pLogHostName; /* host name to use with this socket */ + sbool bUseFlowCtl; /* use flow control or not (if yes, only LIGHT is used! */ + sbool bIgnoreTimestamp; /* ignore timestamps present in the incoming message? */ + sbool bWritePid; /* use credentials from recvmsg() and fixup PID in TAG */ + sbool bUseSysTimeStamp; /* use timestamp from system (instead of from message) */ + int bCreatePath; /* auto-create socket path? */ + unsigned int ratelimitInterval; /* interval in seconds, 0 = off */ + unsigned int ratelimitBurst; /* max nbr of messages in interval */ + int ratelimitSeverity; + int bAnnotate; /* annotate trusted properties */ + int bParseTrusted; /* parse trusted properties */ + sbool bDiscardOwnMsgs; /* discard messages that originated from our own pid? */ + sbool bUnlink; + sbool bUseSpecialParser; + sbool bParseHost; + uchar *pszBindRuleset; /* name of ruleset to bind to */ + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + struct instanceConf_s *next; +}; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + instanceConf_t *root, *tail; + uchar *pLogSockName; + unsigned int ratelimitIntervalSysSock; + unsigned int ratelimitBurstSysSock; + int ratelimitSeveritySysSock; + int bAnnotateSysSock; + int bParseTrusted; + int bUseSpecialParser; + int bParseHost; + sbool bIgnoreTimestamp; /* ignore timestamps present in the incoming message? */ + sbool bUseFlowCtl; /* use flow control or not (if yes, only LIGHT is used! */ + sbool bOmitLocalLogging; + sbool bWritePidSysSock; + sbool bUseSysTimeStamp; + sbool bDiscardOwnMsgs; + sbool configSetViaV2Method; + sbool bUnlink; +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */ + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "syssock.use", eCmdHdlrBinary, 0 }, + { "syssock.name", eCmdHdlrGetWord, 0 }, + { "syssock.unlink", eCmdHdlrBinary, 0 }, + { "syssock.ignoretimestamp", eCmdHdlrBinary, 0 }, + { "syssock.ignoreownmessages", eCmdHdlrBinary, 0 }, + { "syssock.flowcontrol", eCmdHdlrBinary, 0 }, + { "syssock.usesystimestamp", eCmdHdlrBinary, 0 }, + { "syssock.annotate", eCmdHdlrBinary, 0 }, + { "syssock.parsetrusted", eCmdHdlrBinary, 0 }, + { "syssock.usespecialparser", eCmdHdlrBinary, 0 }, + { "syssock.parsehostname", eCmdHdlrBinary, 0 }, + { "syssock.usepidfromsystem", eCmdHdlrBinary, 0 }, + { "syssock.ratelimit.interval", eCmdHdlrInt, 0 }, + { "syssock.ratelimit.burst", eCmdHdlrInt, 0 }, + { "syssock.ratelimit.severity", eCmdHdlrInt, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "socket", eCmdHdlrString, CNFPARAM_REQUIRED }, /* legacy: addunixlistensocket */ + { "unlink", eCmdHdlrBinary, 0 }, + { "createpath", eCmdHdlrBinary, 0 }, + { "parsetrusted", eCmdHdlrBinary, 0 }, + { "ignoreownmessages", eCmdHdlrBinary, 0 }, + { "hostname", eCmdHdlrString, 0 }, + { "ignoretimestamp", eCmdHdlrBinary, 0 }, + { "flowcontrol", eCmdHdlrBinary, 0 }, + { "usesystimestamp", eCmdHdlrBinary, 0 }, + { "annotate", eCmdHdlrBinary, 0 }, + { "usespecialparser", eCmdHdlrBinary, 0 }, + { "parsehostname", eCmdHdlrBinary, 0 }, + { "usepidfromsystem", eCmdHdlrBinary, 0 }, + { "ruleset", eCmdHdlrString, 0 }, + { "ratelimit.interval", eCmdHdlrInt, 0 }, + { "ratelimit.burst", eCmdHdlrInt, 0 }, + { "ratelimit.severity", eCmdHdlrInt, 0 } +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; + +#include "im-helper.h" /* must be included AFTER the type definitions! */ + +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ + + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->sockName = NULL; + inst->pLogHostName = NULL; + inst->pszBindRuleset = NULL; + inst->pBindRuleset = NULL; + inst->ratelimitInterval = DFLT_ratelimitInterval; + inst->ratelimitBurst = DFLT_ratelimitBurst; + inst->ratelimitSeverity = DFLT_ratelimitSeverity; + inst->bUseFlowCtl = 0; + inst->bUseSpecialParser = DFLT_bUseSpecialParser; + inst->bParseHost = UNSET; + inst->bIgnoreTimestamp = 1; + inst->bCreatePath = DFLT_bCreatePath; + inst->bUseSysTimeStamp = 1; + inst->bWritePid = 0; + inst->bAnnotate = 0; + inst->bParseTrusted = 0; + inst->bDiscardOwnMsgs = loadModConf->pConf->globals.bProcessInternalMessages; + inst->bUnlink = 1; + inst->next = NULL; + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = inst; + } else { + loadModConf->tail->next = inst; + loadModConf->tail = inst; + } + + *pinst = inst; +finalize_it: + RETiRet; +} + + +/* This function is called when a new listen socket instance shall be added to + * the current config object via the legacy config system. It just shuffles + * all parameters to the listener in-memory instance. + * rgerhards, 2011-05-12 + */ +static rsRetVal addInstance(void __attribute__((unused)) *pVal, uchar *pNewVal) +{ + instanceConf_t *inst; + DEFiRet; + + if(pNewVal == NULL || pNewVal[0] == '\0') { + LogError(0, RS_RET_SOCKNAME_MISSING , "imuxsock: socket name must be specified, " + "but is not - listener not created\n"); + if(pNewVal != NULL) + free(pNewVal); + ABORT_FINALIZE(RS_RET_SOCKNAME_MISSING); + } + + CHKiRet(createInstance(&inst)); + inst->sockName = pNewVal; + inst->ratelimitInterval = cs.ratelimitInterval; + inst->pLogHostName = cs.pLogHostName; + inst->ratelimitBurst = cs.ratelimitBurst; + inst->ratelimitSeverity = cs.ratelimitSeverity; + inst->bUseFlowCtl = cs.bUseFlowCtl; + inst->bIgnoreTimestamp = cs.bIgnoreTimestamp; + inst->bCreatePath = cs.bCreatePath; + inst->bUseSysTimeStamp = cs.bUseSysTimeStamp; + inst->bWritePid = cs.bWritePid; + inst->bAnnotate = cs.bAnnotate; + inst->bParseTrusted = cs.bParseTrusted; + inst->bParseHost = UNSET; + inst->next = NULL; + + /* reset hostname for next socket */ + cs.pLogHostName = NULL; + +finalize_it: + RETiRet; +} + + +/* add an additional listen socket. + * added capability to specify hostname for socket -- rgerhards, 2008-08-01 + */ +static rsRetVal +addListner(instanceConf_t *inst) +{ + DEFiRet; + + if(inst->bParseHost == UNSET) { + if(*inst->sockName == ':') { + listeners[nfd].bParseHost = 1; + } else { + listeners[nfd].bParseHost = 0; + } + } else { + listeners[nfd].bParseHost = inst->bParseHost; + } + if(inst->pLogHostName == NULL) { + listeners[nfd].hostName = NULL; + } else { + CHKiRet(prop.Construct(&(listeners[nfd].hostName))); + CHKiRet(prop.SetString(listeners[nfd].hostName, inst->pLogHostName, ustrlen(inst->pLogHostName))); + CHKiRet(prop.ConstructFinalize(listeners[nfd].hostName)); + } + if(inst->ratelimitInterval > 0) { + if((listeners[nfd].ht = create_hashtable(100, hash_from_key_fn, key_equals_fn, + (void(*)(void*))ratelimitDestruct)) == NULL) { + /* in this case, we simply turn off rate-limiting */ + DBGPRINTF("imuxsock: turning off rate limiting because we could not " + "create hash table\n"); + inst->ratelimitInterval = 0; + } + } else { + listeners[nfd].ht = NULL; + } + listeners[nfd].ratelimitInterval = inst->ratelimitInterval; + listeners[nfd].ratelimitBurst = inst->ratelimitBurst; + listeners[nfd].ratelimitSev = inst->ratelimitSeverity; + listeners[nfd].flowCtl = inst->bUseFlowCtl ? eFLOWCTL_LIGHT_DELAY : eFLOWCTL_NO_DELAY; + listeners[nfd].flags = inst->bIgnoreTimestamp ? IGNDATE : NOFLAG; + listeners[nfd].bCreatePath = inst->bCreatePath; + listeners[nfd].sockName = ustrdup(inst->sockName); + listeners[nfd].bUseCreds = (inst->bDiscardOwnMsgs || inst->bWritePid || inst->ratelimitInterval + || inst->bAnnotate || inst->bUseSysTimeStamp) ? 1 : 0; + listeners[nfd].bAnnotate = inst->bAnnotate; + listeners[nfd].bParseTrusted = inst->bParseTrusted; + listeners[nfd].bDiscardOwnMsgs = inst->bDiscardOwnMsgs; + listeners[nfd].bUnlink = inst->bUnlink; + listeners[nfd].bWritePid = inst->bWritePid; + listeners[nfd].bUseSysTimeStamp = inst->bUseSysTimeStamp; + listeners[nfd].bUseSpecialParser = inst->bUseSpecialParser; + listeners[nfd].pRuleset = inst->pBindRuleset; + CHKiRet(ratelimitNew(&listeners[nfd].dflt_ratelimiter, "imuxsock", NULL)); + ratelimitSetLinuxLike(listeners[nfd].dflt_ratelimiter, + listeners[nfd].ratelimitInterval, + listeners[nfd].ratelimitBurst); + ratelimitSetSeverity(listeners[nfd].dflt_ratelimiter, + listeners[nfd].ratelimitSev); + nfd++; + +finalize_it: + RETiRet; +} + + +static rsRetVal discardLogSockets(void) +{ + int i; + + /* Check whether the system socket is in use */ + if(startIndexUxLocalSockets == 0) { + /* Clean up rate limiting data for the system socket */ + if(listeners[0].ht != NULL) { + hashtable_destroy(listeners[0].ht, 1); /* 1 => free all values automatically */ + } + ratelimitDestruct(listeners[0].dflt_ratelimiter); + } + + /* Clean up all other sockets */ + for (i = 1; i < nfd; i++) { + if(listeners[i].sockName != NULL) { + free(listeners[i].sockName); + listeners[i].sockName = NULL; + } + if(listeners[i].hostName != NULL) { + prop.Destruct(&(listeners[i].hostName)); + } + if(listeners[i].ht != NULL) { + hashtable_destroy(listeners[i].ht, 1); /* 1 => free all values automatically */ + } + ratelimitDestruct(listeners[i].dflt_ratelimiter); + } + + return RS_RET_OK; +} + + +/* used to create a log socket if NOT passed in via systemd. + */ +/* note: the linux SUN_LEN macro uses a sizeof based on a NULL pointer. This + * triggers UBSan warning. As such, we turn that warning off for the fuction. + * As it is OS-provided, there is no way to solve it ourselves. The problem + * may also exist on other platforms, we have just noticed it on Linux. + */ +#if defined(__clang__) +#pragma GCC diagnostic ignored "-Wunknown-attributes" +#endif +static rsRetVal +#if defined(__clang__) +__attribute__((no_sanitize("undefined"))) +#endif +createLogSocket(lstn_t *pLstn) +{ + struct sockaddr_un sunx; + DEFiRet; + + if(pLstn->bUnlink) + unlink((char*)pLstn->sockName); + memset(&sunx, 0, sizeof(sunx)); + sunx.sun_family = AF_UNIX; + if(pLstn->bCreatePath) { + makeFileParentDirs((uchar*)pLstn->sockName, ustrlen(pLstn->sockName), 0755, -1, -1, 0); + } + strncpy(sunx.sun_path, (char*)pLstn->sockName, sizeof(sunx.sun_path)); + sunx.sun_path[sizeof(sunx.sun_path)-1] = '\0'; + pLstn->fd = socket(AF_UNIX, SOCK_DGRAM, 0); + if(pLstn->fd < 0 ) { + ABORT_FINALIZE(RS_RET_ERR_CRE_AFUX); + } + if(bind(pLstn->fd, (struct sockaddr *) &sunx, SUN_LEN(&sunx)) < 0) { + ABORT_FINALIZE(RS_RET_ERR_CRE_AFUX); + } + if(chmod((char*)pLstn->sockName, 0666) < 0) { + ABORT_FINALIZE(RS_RET_ERR_CRE_AFUX); + } +finalize_it: + if(iRet != RS_RET_OK) { + LogError(errno, iRet, "cannot create '%s'", pLstn->sockName); + if(pLstn->fd != -1) { + close(pLstn->fd); + pLstn->fd = -1; + } + } + RETiRet; +} + + +static rsRetVal +openLogSocket(lstn_t *pLstn) +{ + DEFiRet; +# ifdef HAVE_SCM_CREDENTIALS + int one; +# endif /* HAVE_SCM_CREDENTIALS */ + + if(pLstn->sockName[0] == '\0') + return -1; + + pLstn->fd = -1; + +#ifdef HAVE_LIBSYSTEMD + if (sd_fds > 0) { + /* Check if the current socket is a systemd activated one. + * If so, just use it. + */ + int fd; + + for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + sd_fds; fd++) { + if( sd_is_socket_unix(fd, SOCK_DGRAM, -1, (const char*) pLstn->sockName, 0) == 1) { + /* ok, it matches -- just use as is */ + pLstn->fd = fd; + + LogMsg(0, NO_ERRCODE, LOG_INFO, + "imuxsock: Acquired UNIX socket '%s' (fd %d) from systemd.\n", + pLstn->sockName, pLstn->fd); + break; + } + /* + * otherwise it either didn't match *this* socket and + * we just continue to check the next one or there was + * an error and we will create a new socket below. + */ + } + } +#endif + + if (pLstn->fd == -1) { + CHKiRet(createLogSocket(pLstn)); + assert(pLstn->fd != -1); /* else createLogSocket() should have failed! */ + } + +# ifdef HAVE_SCM_CREDENTIALS + if(pLstn->bUseCreds) { + one = 1; + if(setsockopt(pLstn->fd, SOL_SOCKET, SO_PASSCRED, &one, (socklen_t) sizeof(one)) != 0) { + LogError(errno, NO_ERRCODE, "set SO_PASSCRED failed on '%s'", pLstn->sockName); + pLstn->bUseCreds = 0; + } +// TODO: move to its own #if + if(setsockopt(pLstn->fd, SOL_SOCKET, SO_TIMESTAMP, &one, sizeof(one)) != 0) { + LogError(errno, NO_ERRCODE, "set SO_TIMESTAMP failed on '%s'", pLstn->sockName); + } + } +# else /* HAVE_SCM_CREDENTIALS */ + pLstn->bUseCreds = 0; + pLstn->bAnnotate = 0; +# endif /* HAVE_SCM_CREDENTIALS */ + +finalize_it: + if(iRet != RS_RET_OK) { + if(pLstn->fd != -1) { + close(pLstn->fd); + pLstn->fd = -1; + } + } + + RETiRet; +} + + +/* find ratelimiter to use for this message. Currently, we use the + * pid, but may change to cgroup later (probably via a config switch). + * Returns NULL if not found or rate-limiting not activated for this + * listener (the latter being a performance enhancement). + */ +static rsRetVal +findRatelimiter(lstn_t *pLstn, struct ucred *cred, ratelimit_t **prl) +{ + ratelimit_t *rl = NULL; + int r; + pid_t *keybuf; + char pinfobuf[512]; + DEFiRet; + + if(cred == NULL) + FINALIZE; +#if 0 // TODO: check deactivated? + if(pLstn->ratelimitInterval == 0) { + *prl = NULL; + FINALIZE; + } +#endif + if(pLstn->ht == NULL) { + *prl = NULL; + FINALIZE; + } + + rl = hashtable_search(pLstn->ht, &cred->pid); + if(rl == NULL) { + /* we need to add a new ratelimiter, process not seen before! */ + DBGPRINTF("imuxsock: no ratelimiter for pid %lu, creating one\n", + (unsigned long) cred->pid); + STATSCOUNTER_INC(ctrNumRatelimiters, mutCtrNumRatelimiters); + /* read process name from system */ + char procName[256]; /* enough for any sane process name */ + snprintf(procName, sizeof(procName), "/proc/%lu/cmdline", (unsigned long) cred->pid); + FILE *f = fopen(procName, "r"); + if (f) { + size_t len; + len = fread(procName, sizeof(char), 256, f); + if (len > 0) { + snprintf(pinfobuf, sizeof(pinfobuf), "pid: %lu, name: %s", + (unsigned long) cred->pid, procName); + } + fclose(f); + } + else { + snprintf(pinfobuf, sizeof(pinfobuf), "pid: %lu", + (unsigned long) cred->pid); + } + pinfobuf[sizeof(pinfobuf)-1] = '\0'; /* to be on safe side */ + CHKiRet(ratelimitNew(&rl, "imuxsock", pinfobuf)); + ratelimitSetLinuxLike(rl, pLstn->ratelimitInterval, pLstn->ratelimitBurst); + ratelimitSetSeverity(rl, pLstn->ratelimitSev); + CHKmalloc(keybuf = malloc(sizeof(pid_t))); + *keybuf = cred->pid; + r = hashtable_insert(pLstn->ht, keybuf, rl); + if(r == 0) + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + + *prl = rl; + rl = NULL; + +finalize_it: + if(rl != NULL) + ratelimitDestruct(rl); + if(*prl == NULL) + *prl = pLstn->dflt_ratelimiter; + RETiRet; +} + + +/* patch correct pid into tag. bufTAG MUST be CONF_TAG_MAXSIZE long! + */ +static void +fixPID(uchar *bufTAG, int *lenTag, struct ucred *cred) +{ + int i; + char bufPID[16]; + int lenPID; + + if(cred == NULL) + return; + + lenPID = snprintf(bufPID, sizeof(bufPID), "[%lu]:", (unsigned long) cred->pid); + + for(i = *lenTag ; i >= 0 && bufTAG[i] != '[' ; --i) + /*JUST SKIP*/; + + if(i < 0) + i = *lenTag - 1; /* go right at end of TAG, pid was not present (-1 for ':') */ + + if(i + lenPID > CONF_TAG_MAXSIZE) + return; /* do not touch, as things would break */ + + memcpy(bufTAG + i, bufPID, lenPID); + *lenTag = i + lenPID; +} + + +/* Get an "trusted property" from the system. Returns an empty string if the + * property can not be obtained. Inspired by similiar functionality inside + * journald. Currently works with Linux /proc filesystem, only. + */ +static rsRetVal +getTrustedProp(struct ucred *cred, const char *propName, uchar *buf, size_t lenBuf, int *lenProp) +{ + int fd; + int i; + int lenRead; + char namebuf[1024]; + DEFiRet; + + if(snprintf(namebuf, sizeof(namebuf), "/proc/%lu/%s", (long unsigned) cred->pid, + propName) >= (int) sizeof(namebuf)) { + ABORT_FINALIZE(RS_RET_ERR); + } + + if((fd = open(namebuf, O_RDONLY)) == -1) { + DBGPRINTF("error reading '%s'\n", namebuf); + ABORT_FINALIZE(RS_RET_ERR); + } + if((lenRead = read(fd, buf, lenBuf - 1)) == -1) { + DBGPRINTF("error reading file data for '%s'\n", namebuf); + close(fd); + ABORT_FINALIZE(RS_RET_ERR); + } + + /* we strip after the first \n */ + for(i = 0 ; i < lenRead ; ++i) { + if(buf[i] == '\n') + break; + else if(iscntrl(buf[i])) + buf[i] = ' '; + } + buf[i] = '\0'; + *lenProp = i; + + close(fd); + +finalize_it: + RETiRet; +} + + +/* read the exe trusted property path (so far, /proc fs only) + */ +static rsRetVal +getTrustedExe(struct ucred *cred, uchar *buf, size_t lenBuf, int* lenProp) +{ + int lenRead; + char namebuf[1024]; + DEFiRet; + + if(snprintf(namebuf, sizeof(namebuf), "/proc/%lu/exe", (long unsigned) cred->pid) + >= (int) sizeof(namebuf)) { + ABORT_FINALIZE(RS_RET_ERR); + } + + if((lenRead = readlink(namebuf, (char*)buf, lenBuf - 1)) == -1) { + DBGPRINTF("error reading link '%s'\n", namebuf); + ABORT_FINALIZE(RS_RET_ERR); + } + + buf[lenRead] = '\0'; + *lenProp = lenRead; + +finalize_it: + RETiRet; +} + + +/* copy a trusted property in escaped mode. That is, the property can contain + * any character and so it must be properly quoted AND escaped. + * It is assumed the output buffer is large enough. Returns the number of + * characters added. + */ +static int +copyescaped(uchar *dstbuf, uchar *inbuf, int inlen) +{ + int iDst, iSrc; + + *dstbuf = '"'; + for(iDst=1, iSrc=0 ; iSrc < inlen ; ++iDst, ++iSrc) { + if(inbuf[iSrc] == '"' || inbuf[iSrc] == '\\') { + dstbuf[iDst++] = '\\'; + } + dstbuf[iDst] = inbuf[iSrc]; + } + dstbuf[iDst++] = '"'; + return iDst; +} + + +/* submit received message to the queue engine + * We now parse the message according to expected format so that we + * can also mangle it if necessary. + */ +static rsRetVal +SubmitMsg(uchar *pRcv, int lenRcv, lstn_t *pLstn, struct ucred *cred, struct timeval *ts) +{ + smsg_t *pMsg = NULL; + int lenMsg; + int offs; + int i; + uchar *parse; + syslog_pri_t pri; + uchar bufParseTAG[CONF_TAG_MAXSIZE]; + struct syslogTime st; + time_t tt; + ratelimit_t *ratelimiter = NULL; + struct syslogTime dummyTS; + DEFiRet; + + if(pLstn->bDiscardOwnMsgs && cred != NULL && cred->pid == glblGetOurPid()) { + DBGPRINTF("imuxsock: discarding message from our own pid\n"); + FINALIZE; + } + + /* TODO: handle format errors?? */ + /* we need to parse the pri first, because we need the severity for + * rate-limiting as well. + */ + parse = pRcv; + lenMsg = lenRcv; + offs = 1; /* '<' */ + + parse++; + pri = 0; + while(offs < lenMsg && isdigit(*parse)) { + pri = pri * 10 + *parse - '0'; + ++parse; + ++offs; + } + + findRatelimiter(pLstn, cred, &ratelimiter); /* ignore error, better so than others... */ + + if(ts == NULL) { + datetime.getCurrTime(&st, &tt, TIME_IN_LOCALTIME); + } else { + datetime.timeval2syslogTime(ts, &st, TIME_IN_LOCALTIME); + tt = ts->tv_sec; + } + +#if 0 // TODO: think about stats counters (or wait for request...?) + if(ratelimiter != NULL && !withinRatelimit(ratelimiter, tt, cred->pid)) { + STATSCOUNTER_INC(ctrLostRatelimit, mutCtrLostRatelimit); + FINALIZE; + } +#endif + + /* we now create our own message object and submit it to the queue */ + CHKiRet(msgConstructWithTime(&pMsg, &st, tt)); + + /* created trusted properties */ + if(cred != NULL && pLstn->bAnnotate) { + uchar propBuf[1024]; + int lenProp; + + if (pLstn->bParseTrusted) { + struct json_object *json, *jval; + +#define CHKjson(operation, toBeFreed) \ + if((operation) == NULL) { \ + json_object_put(toBeFreed); \ + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); \ + } + + CHKmalloc(json = json_object_new_object()); + /* create value string, create field, and add it */ + CHKjson(jval = json_object_new_int(cred->pid), json); + json_object_object_add(json, "pid", jval); + CHKjson(jval = json_object_new_int(cred->uid), json); + json_object_object_add(json, "uid", jval); + CHKjson(jval = json_object_new_int(cred->gid), json); + json_object_object_add(json, "gid", jval); + if(getTrustedProp(cred, "comm", propBuf, sizeof(propBuf), &lenProp) == RS_RET_OK) { + CHKjson(jval = json_object_new_string((char*)propBuf), json); + json_object_object_add(json, "appname", jval); + } + if(getTrustedExe(cred, propBuf, sizeof(propBuf), &lenProp) == RS_RET_OK) { + CHKjson(jval = json_object_new_string((char*)propBuf), json); + json_object_object_add(json, "exe", jval); + } + if(getTrustedProp(cred, "cmdline", propBuf, sizeof(propBuf), &lenProp) == RS_RET_OK) { + CHKjson(jval = json_object_new_string((char*)propBuf), json); + json_object_object_add(json, "cmd", jval); + } +#undef CHKjson + + /* as per lumberjack spec, these properties need to go into + * the CEE root. + */ + msgAddJSON(pMsg, (uchar*)"!", json, 0, 0); + + MsgSetRawMsg(pMsg, (char*)pRcv, lenRcv); + } else { + uchar msgbuf[8192]; + uchar *pmsgbuf = msgbuf; + int toffs; /* offset for trusted properties */ + + if((unsigned) (lenRcv + 4096) >= sizeof(msgbuf)) { + CHKmalloc(pmsgbuf = malloc(lenRcv+4096)); + } + + memcpy(pmsgbuf, pRcv, lenRcv); + memcpy(pmsgbuf+lenRcv, " @[", 3); + toffs = lenRcv + 3; /* next free location */ + lenProp = snprintf((char*)propBuf, sizeof(propBuf), "_PID=%lu _UID=%lu _GID=%lu", + (long unsigned) cred->pid, (long unsigned) cred->uid, + (long unsigned) cred->gid); + memcpy(pmsgbuf+toffs, propBuf, lenProp); + toffs = toffs + lenProp; + + if(getTrustedProp(cred, "comm", propBuf, sizeof(propBuf), &lenProp) == RS_RET_OK) { + memcpy(pmsgbuf+toffs, " _COMM=", 7); + memcpy(pmsgbuf+toffs+7, propBuf, lenProp); + toffs = toffs + 7 + lenProp; + } + if(getTrustedExe(cred, propBuf, sizeof(propBuf), &lenProp) == RS_RET_OK) { + memcpy(pmsgbuf+toffs, " _EXE=", 6); + memcpy(pmsgbuf+toffs+6, propBuf, lenProp); + toffs = toffs + 6 + lenProp; + } + if(getTrustedProp(cred, "cmdline", propBuf, sizeof(propBuf), &lenProp) == RS_RET_OK) { + memcpy(pmsgbuf+toffs, " _CMDLINE=", 10); + toffs = toffs + 10 + + copyescaped(pmsgbuf+toffs+10, propBuf, lenProp); + } + + /* finalize string */ + pmsgbuf[toffs] = ']'; + pmsgbuf[toffs+1] = '\0'; + + MsgSetRawMsg(pMsg, (char*)pmsgbuf, toffs + 1); + if (pmsgbuf != msgbuf) { + free(pmsgbuf); + } + } + } else { + /* just add the unmodified message */ + MsgSetRawMsg(pMsg, (char*)pRcv, lenRcv); + } + + MsgSetFlowControlType(pMsg, pLstn->flowCtl); + MsgSetInputName(pMsg, pInputName); + if(pLstn->bParseHost) { + pMsg->msgFlags = pLstn->flags | PARSE_HOSTNAME; + } else { + pMsg->msgFlags = pLstn->flags; + } + + if(pLstn->bUseSpecialParser) { + /* this is the legacy "log socket" parser which was written on the assumption + * that the log socket format would be fixed. While many folks said so, it + * seems to be different in practice, and this is why we now have choices... + * rgerhards, 2015-03-03 + */ + parser.SanitizeMsg(pMsg); + lenMsg = pMsg->iLenRawMsg - offs; /* SanitizeMsg() may have changed the size */ + msgSetPRI(pMsg, pri); + MsgSetAfterPRIOffs(pMsg, offs); + + parse++; lenMsg--; /* '>' */ + if(ts == NULL) { + if((pLstn->flags & IGNDATE)) { + /* in this case, we still need to find out if we have a valid + * datestamp or not .. and advance the parse pointer accordingly. + */ + if (datetime.ParseTIMESTAMP3339(&dummyTS, &parse, &lenMsg) != RS_RET_OK) { + datetime.ParseTIMESTAMP3164(&dummyTS, &parse, &lenMsg, + NO_PARSE3164_TZSTRING, NO_PERMIT_YEAR_AFTER_TIME); + } + } else { + if(datetime.ParseTIMESTAMP3339(&(pMsg->tTIMESTAMP), &parse, &lenMsg) != RS_RET_OK && + datetime.ParseTIMESTAMP3164(&(pMsg->tTIMESTAMP), &parse, &lenMsg, + NO_PARSE3164_TZSTRING, NO_PERMIT_YEAR_AFTER_TIME) != RS_RET_OK) { + DBGPRINTF("we have a problem, invalid timestamp in msg!\n"); + } + } + } else { /* if we pulled the time from the system, we need to update the message text */ + uchar *tmpParse = parse; /* just to check correctness of TS */ + if(datetime.ParseTIMESTAMP3339(&dummyTS, &tmpParse, &lenMsg) == RS_RET_OK || + datetime.ParseTIMESTAMP3164(&dummyTS, &tmpParse, &lenMsg, NO_PARSE3164_TZSTRING, + NO_PERMIT_YEAR_AFTER_TIME) == RS_RET_OK) { + /* We modify the message only if it contained a valid timestamp, + otherwise we do not touch it at all. */ + datetime.formatTimestamp3164(&st, (char*)parse, 0); + parse[15] = ' '; /* re-write \0 from fromatTimestamp3164 by SP */ + /* update "counters" to reflect processed timestamp */ + parse += 16; + } + } + + /* pull tag */ + + i = 0; + while(lenMsg > 0 && *parse != ' ' && i < CONF_TAG_MAXSIZE - 1) { + bufParseTAG[i++] = *parse++; + --lenMsg; + } + bufParseTAG[i] = '\0'; /* terminate string */ + if(pLstn->bWritePid) + fixPID(bufParseTAG, &i, cred); + MsgSetTAG(pMsg, bufParseTAG, i); + MsgSetMSGoffs(pMsg, pMsg->iLenRawMsg - lenMsg); + } else { /* we are configured to use regular parser chain */ + pMsg->msgFlags |= NEEDS_PARSING; + } + + MsgSetRcvFrom(pMsg, pLstn->hostName == NULL ? glbl.GetLocalHostNameProp() : pLstn->hostName); + CHKiRet(MsgSetRcvFromIP(pMsg, pLocalHostIP)); + MsgSetRuleset(pMsg, pLstn->pRuleset); + ratelimitAddMsg(ratelimiter, NULL, pMsg); + STATSCOUNTER_INC(ctrSubmit, mutCtrSubmit); +finalize_it: + if(iRet != RS_RET_OK) { + if(pMsg != NULL) + msgDestruct(&pMsg); + } + RETiRet; +} + + +/* This function receives data from a socket indicated to be ready + * to receive and submits the message received for processing. + * rgerhards, 2007-12-20 + * Interface changed so that this function is passed the array index + * of the socket which is to be processed. This eases access to the + * growing number of properties. -- rgerhards, 2008-08-01 + */ +static rsRetVal readSocket(lstn_t *pLstn) +{ + DEFiRet; + int iRcvd; + int iMaxLine; + struct msghdr msgh; + struct iovec msgiov; + struct ucred cred; + struct timeval ts; + int cred_set = 0; + int ts_set = 0; + uchar bufRcv[4096+1]; + uchar *pRcv = NULL; /* receive buffer */ +# ifdef HAVE_SCM_CREDENTIALS + /* aux is a union rather than a direct char array to force alignment with cmsghdr */ + union { + char buf[128]; + struct cmsghdr cm; + } aux; +# endif + + assert(pLstn->fd >= 0); + + iMaxLine = glbl.GetMaxLine(runConf); + + /* we optimize performance: if iMaxLine is below 4K (which it is in almost all + * cases, we use a fixed buffer on the stack. Only if it is higher, heap memory + * is used. We could use alloca() to achive a similar aspect, but there are so + * many issues with alloca() that I do not want to take that route. + * rgerhards, 2008-09-02 + */ + if((size_t) iMaxLine < sizeof(bufRcv) - 1) { + pRcv = bufRcv; + } else { + CHKmalloc(pRcv = (uchar*) malloc(iMaxLine + 1)); + } + + memset(&msgh, 0, sizeof(msgh)); + memset(&msgiov, 0, sizeof(msgiov)); +# ifdef HAVE_SCM_CREDENTIALS + if(pLstn->bUseCreds) { + memset(&aux, 0, sizeof(aux)); + msgh.msg_control = &aux; + msgh.msg_controllen = sizeof(aux); + } +# endif + msgiov.iov_base = (char*)pRcv; + msgiov.iov_len = iMaxLine; + msgh.msg_iov = &msgiov; + msgh.msg_iovlen = 1; +/* AIXPORT : MSG_DONTWAIT not supported */ +#if defined (_AIX) +#define MSG_DONTWAIT MSG_NONBLOCK +#endif + iRcvd = recvmsg(pLstn->fd, &msgh, MSG_DONTWAIT); + + DBGPRINTF("Message from UNIX socket: #%d, size %d\n", pLstn->fd, (int) iRcvd); + if(iRcvd > 0) { +# if defined(HAVE_SCM_CREDENTIALS) || defined(HAVE_SO_TIMESTAMP) + if(pLstn->bUseCreds) { + struct cmsghdr *cm; + for(cm = CMSG_FIRSTHDR(&msgh); cm; cm = CMSG_NXTHDR(&msgh, cm)) { +# ifdef HAVE_SCM_CREDENTIALS + if( pLstn->bUseCreds + && cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SCM_CREDENTIALS) { + memcpy(&cred, CMSG_DATA(cm), sizeof(cred)); + cred_set = 1; + } +# endif /* HAVE_SCM_CREDENTIALS */ +# if HAVE_SO_TIMESTAMP + if( pLstn->bUseSysTimeStamp + && cm->cmsg_level == SOL_SOCKET && cm->cmsg_type == SO_TIMESTAMP) { + memcpy(&ts, CMSG_DATA(cm), sizeof(ts)); + ts_set = 1; + } +# endif /* HAVE_SO_TIMESTAMP */ + } + } +# endif /* defined(HAVE_SCM_CREDENTIALS) || defined(HAVE_SO_TIMESTAMP) */ + CHKiRet(SubmitMsg(pRcv, iRcvd, pLstn, (cred_set ? &cred : NULL), (ts_set ? &ts : NULL))); + } else if(iRcvd < 0 && errno != EINTR && errno != EAGAIN) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + DBGPRINTF("UNIX socket error: %d = %s.\n", errno, errStr); + LogError(errno, NO_ERRCODE, "imuxsock: recvfrom UNIX"); + } + +finalize_it: + if(pRcv != NULL && (size_t) iMaxLine >= sizeof(bufRcv) - 1) + free(pRcv); + + RETiRet; +} + + +/* activate current listeners */ +static rsRetVal +activateListeners(void) +{ + int actSocks; + int i; + DEFiRet; + + /* Initialize the system socket only if it's in use */ + if(startIndexUxLocalSockets == 0) { + /* first apply some config settings */ + listeners[0].sockName = UCHAR_CONSTANT(_PATH_LOG); + if(runModConf->pLogSockName != NULL) { + listeners[0].sockName = runModConf->pLogSockName; + } +#ifdef HAVE_LIBSYSTEMD + else if(sd_booted()) { + struct stat st; + if(stat(SYSTEMD_PATH_LOG, &st) != -1 && S_ISSOCK(st.st_mode)) { + listeners[0].sockName = (uchar*) SYSTEMD_PATH_LOG; + } + } +#endif + if(runModConf->ratelimitIntervalSysSock > 0) { + if((listeners[0].ht = create_hashtable(100, hash_from_key_fn, key_equals_fn, NULL)) == NULL) { + /* in this case, we simply turn of rate-limiting */ + LogError(0, NO_ERRCODE, "imuxsock: turning off rate limiting because " + "we could not create hash table\n"); + runModConf->ratelimitIntervalSysSock = 0; + } + } else { + listeners[0].ht = NULL; + } + listeners[0].fd = -1; + listeners[0].pRuleset = NULL; + listeners[0].hostName = NULL; + listeners[0].bParseHost = 0; + listeners[0].bCreatePath = 0; + listeners[0].ratelimitInterval = runModConf->ratelimitIntervalSysSock; + listeners[0].ratelimitBurst = runModConf->ratelimitBurstSysSock; + listeners[0].ratelimitSev = runModConf->ratelimitSeveritySysSock; + listeners[0].bUseCreds = (runModConf->bWritePidSysSock || runModConf->ratelimitIntervalSysSock + || runModConf->bAnnotateSysSock || runModConf->bDiscardOwnMsgs + || runModConf->bUseSysTimeStamp) ? 1 : 0; + listeners[0].bWritePid = runModConf->bWritePidSysSock; + listeners[0].bAnnotate = runModConf->bAnnotateSysSock; + listeners[0].bParseTrusted = runModConf->bParseTrusted; + listeners[0].bParseHost = runModConf->bParseHost; + listeners[0].bUseSpecialParser = runModConf->bUseSpecialParser; + listeners[0].bDiscardOwnMsgs = runModConf->bDiscardOwnMsgs; + listeners[0].bUnlink = runModConf->bUnlink; + listeners[0].bUseSysTimeStamp = runModConf->bUseSysTimeStamp; + listeners[0].flags = runModConf->bIgnoreTimestamp ? IGNDATE : NOFLAG; + listeners[0].flowCtl = runModConf->bUseFlowCtl ? eFLOWCTL_LIGHT_DELAY : eFLOWCTL_NO_DELAY; + CHKiRet(ratelimitNew(&listeners[0].dflt_ratelimiter, "imuxsock", NULL)); + ratelimitSetLinuxLike(listeners[0].dflt_ratelimiter, + listeners[0].ratelimitInterval, + listeners[0].ratelimitBurst); + ratelimitSetSeverity(listeners[0].dflt_ratelimiter,listeners[0].ratelimitSev); + } + +#ifdef HAVE_LIBSYSTEMD + sd_fds = sd_listen_fds(0); + if(sd_fds < 0) { + LogError(-sd_fds, NO_ERRCODE, "imuxsock: Failed to acquire systemd socket"); + ABORT_FINALIZE(RS_RET_ERR_CRE_AFUX); + } +#endif + + /* initialize and return if will run or not */ + actSocks = 0; + for (i = startIndexUxLocalSockets ; i < nfd ; i++) { + if(openLogSocket(&(listeners[i])) == RS_RET_OK) { + ++actSocks; + DBGPRINTF("imuxsock: Opened UNIX socket '%s' (fd %d).\n", + listeners[i].sockName, listeners[i].fd); + } + } + + if(actSocks == 0) { + LogError(0, RS_RET_ERR, "imuxsock does not run because we could not " + "acquire any socket\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + +finalize_it: + RETiRet; +} + + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + /* init our settings */ + pModConf->pLogSockName = NULL; + pModConf->bOmitLocalLogging = 0; + pModConf->bIgnoreTimestamp = 1; + pModConf->bUseFlowCtl = 0; + pModConf->bUseSysTimeStamp = 1; + pModConf->bWritePidSysSock = 0; + pModConf->bAnnotateSysSock = 0; + pModConf->bParseTrusted = 0; + pModConf->bParseHost = UNSET; + pModConf->bUseSpecialParser = DFLT_bUseSpecialParser; + /* if we do not process internal messages, we will see messages + * from ourselves, and so we need to permit this. + */ + pModConf->bDiscardOwnMsgs = pConf->globals.bProcessInternalMessages; + pModConf->bUnlink = 1; + pModConf->ratelimitIntervalSysSock = DFLT_ratelimitInterval; + pModConf->ratelimitBurstSysSock = DFLT_ratelimitBurst; + pModConf->ratelimitSeveritySysSock = DFLT_ratelimitSeverity; + bLegacyCnfModGlobalsPermitted = 1; + /* reset legacy config vars */ + resetConfigVariables(NULL, NULL); +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for imuxsock:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "syssock.use")) { + loadModConf->bOmitLocalLogging = ((int) pvals[i].val.d.n) ? 0 : 1; + } else if(!strcmp(modpblk.descr[i].name, "syssock.name")) { + loadModConf->pLogSockName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "syssock.ignoretimestamp")) { + loadModConf->bIgnoreTimestamp = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.ignoreownmessages")) { + loadModConf->bDiscardOwnMsgs = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.unlink")) { + loadModConf->bUnlink = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.flowcontrol")) { + loadModConf->bUseFlowCtl = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.usesystimestamp")) { + loadModConf->bUseSysTimeStamp = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.annotate")) { + loadModConf->bAnnotateSysSock = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.parsetrusted")) { + loadModConf->bParseTrusted = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.parsehostname")) { + loadModConf->bParseHost = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.usespecialparser")) { + loadModConf->bUseSpecialParser = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.usepidfromsystem")) { + loadModConf->bWritePidSysSock = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.ratelimit.interval")) { + loadModConf->ratelimitIntervalSysSock = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.ratelimit.burst")) { + loadModConf->ratelimitBurstSysSock = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "syssock.ratelimit.severity")) { + loadModConf->ratelimitSeveritySysSock = (int) pvals[i].val.d.n; + } else { + dbgprintf("imuxsock: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + + /* disable legacy module-global config directives */ + bLegacyCnfModGlobalsPermitted = 0; + loadModConf->configSetViaV2Method = 1; + +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + + +BEGINnewInpInst + struct cnfparamvals *pvals; + instanceConf_t *inst; + int i; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imuxsock)\n"); + + pvals = nvlstGetParams(lst, &inppblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, + "imuxsock: required parameter are missing\n"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("input param blk in imuxsock:\n"); + cnfparamsPrint(&inppblk, pvals); + } + + CHKiRet(createInstance(&inst)); + + for(i = 0 ; i < inppblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(inppblk.descr[i].name, "socket")) { + inst->sockName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "createpath")) { + inst->bCreatePath = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "parsetrusted")) { + inst->bParseTrusted = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ignoreownmessages")) { + inst->bDiscardOwnMsgs = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "unlink")) { + inst->bUnlink = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "hostname")) { + inst->pLogHostName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "ignoretimestamp")) { + inst->bIgnoreTimestamp = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "flowcontrol")) { + inst->bUseFlowCtl = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "usesystimestamp")) { + inst->bUseSysTimeStamp = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "annotate")) { + inst->bAnnotate = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "usepidfromsystem")) { + inst->bWritePid = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "parsehostname")) { + inst->bParseHost = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "usespecialparser")) { + inst->bUseSpecialParser = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "ratelimit.interval")) { + inst->ratelimitInterval = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ratelimit.burst")) { + inst->ratelimitBurst = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "ratelimit.severity")) { + inst->ratelimitSeverity = (int) pvals[i].val.d.n; + } else { + dbgprintf("imuxsock: program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + } +finalize_it: +CODE_STD_FINALIZERnewInpInst + cnfparamvalsDestruct(pvals, &inppblk); +ENDnewInpInst + + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(!loadModConf->configSetViaV2Method) { + /* persist module-specific settings from legacy config system */ + /* these are used to initialize the system log socket (listeners[0]) */ + loadModConf->bOmitLocalLogging = cs.bOmitLocalLogging; + loadModConf->pLogSockName = cs.pLogSockName; + loadModConf->bIgnoreTimestamp = cs.bIgnoreTimestampSysSock; + loadModConf->bUseSysTimeStamp = cs.bUseSysTimeStampSysSock; + loadModConf->bUseFlowCtl = cs.bUseFlowCtlSysSock; + loadModConf->bAnnotateSysSock = cs.bAnnotateSysSock; + loadModConf->bWritePidSysSock = cs.bWritePidSysSock; + loadModConf->bParseTrusted = cs.bParseTrusted; + loadModConf->ratelimitIntervalSysSock = cs.ratelimitIntervalSysSock; + loadModConf->ratelimitBurstSysSock = cs.ratelimitBurstSysSock; + loadModConf->ratelimitSeveritySysSock = cs.ratelimitSeveritySysSock; + } + + loadModConf = NULL; /* done loading */ + /* free legacy config vars */ + free(cs.pLogHostName); + cs.pLogSockName = NULL; + cs.pLogHostName = NULL; +ENDendCnfLoad + + +/* function to generate error message if framework does not find requested ruleset */ +static void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + LogError(0, NO_ERRCODE, "imuxsock: ruleset '%s' for socket %s not found - " + "using default ruleset instead", inst->pszBindRuleset, + inst->sockName); +} +BEGINcheckCnf + instanceConf_t *inst; +CODESTARTcheckCnf + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + std_checkRuleset(pModConf, inst); + } +ENDcheckCnf + + +BEGINactivateCnfPrePrivDrop + instanceConf_t *inst; + int nLstn; + int i; +CODESTARTactivateCnfPrePrivDrop + runModConf = pModConf; +# ifdef OS_SOLARIS + /* under solaris, we must NEVER process the local log socket, because + * it is implemented there differently. If we used it, we would actually + * delete it and render the system partly unusable. So don't do that. + * rgerhards, 2010-03-26 + */ + startIndexUxLocalSockets = 1; +# else + startIndexUxLocalSockets = runModConf->bOmitLocalLogging ? 1 : 0; +# endif + /* we first calculate the number of listeners so that we can + * appropriately size the listener array. Note that we will + * always allocate memory for the system log socket. + */ + nLstn = 0; + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + ++nLstn; + } + if(nLstn > 0 || startIndexUxLocalSockets == 0) { + DBGPRINTF("imuxsock: allocating memory for %d listeners\n", nLstn); + lstn_t *const listeners_new = realloc(listeners, (1+nLstn)*sizeof(lstn_t)); + CHKmalloc(listeners_new); + listeners = listeners_new; + for(i = 1 ; i < nLstn ; ++i) { + listeners[i].sockName = NULL; + listeners[i].fd = -1; + } + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + addListner(inst); + } + CHKiRet(activateListeners()); + } +finalize_it: +ENDactivateCnfPrePrivDrop + + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; +CODESTARTfreeCnf + free(pModConf->pLogSockName); + for(inst = pModConf->root ; inst != NULL ; ) { + free(inst->sockName); + free(inst->pszBindRuleset); + free(inst->pLogHostName); + del = inst; + inst = inst->next; + free(del); + } +ENDfreeCnf + + +/* This function is called to gather input. */ +BEGINrunInput + int nfds; + int i; +CODESTARTrunInput + struct pollfd *const pollfds = calloc(nfd, sizeof(struct pollfd)); + CHKmalloc(pollfds); + if(startIndexUxLocalSockets == 1 && nfd == 1) { + /* No sockets were configured, no reason to run. */ + ABORT_FINALIZE(RS_RET_OK); + } + if(startIndexUxLocalSockets == 1) { + pollfds[0].fd = -1; + } + for (i = startIndexUxLocalSockets; i < nfd; i++) { + pollfds[i].fd = listeners[i].fd; + pollfds[i].events = POLLIN; + } + + /* this is an endless loop - it is terminated when the thread is + * signalled to do so. + */ + while(1) { + DBGPRINTF("--------imuxsock calling poll() on %d fds\n", nfd); + + nfds = poll(pollfds, nfd, -1); + if(glbl.GetGlobalInputTermState() == 1) + break; /* terminate input! */ + + if(nfds < 0) { + if(errno == EINTR) { + DBGPRINTF("imuxsock: EINTR occurred\n"); + } else { + LogMsg(errno, RS_RET_POLL_ERR, LOG_WARNING, "imuxsock: poll " + "system call failed, may cause further troubles"); + } + nfds = 0; + } + + for (i = startIndexUxLocalSockets ; i < nfd && nfds > 0; i++) { + if(glbl.GetGlobalInputTermState() == 1) + ABORT_FINALIZE(RS_RET_FORCE_TERM); /* terminate input! */ + if(pollfds[i].revents & POLLIN) { + readSocket(&(listeners[i])); + --nfds; /* indicate we have processed one */ + } + } + } + +finalize_it: + free(pollfds); +ENDrunInput + + +BEGINwillRun +CODESTARTwillRun +ENDwillRun + + +BEGINafterRun + int i; +CODESTARTafterRun + /* do cleanup here */ + if(startIndexUxLocalSockets == 1 && nfd == 1) { + /* No sockets were configured, no cleanup needed. */ + return RS_RET_OK; + } + + /* Close the UNIX sockets. */ + for (i = 0; i < nfd; i++) + if (listeners[i].fd != -1) + close(listeners[i].fd); + + /* Clean-up files. */ + for(i = startIndexUxLocalSockets; i < nfd; i++) + if (listeners[i].sockName && listeners[i].fd != -1) { + /* If systemd passed us a socket it is systemd's job to clean it up. + * Do not unlink it -- we will get same socket (node) from systemd + * e.g. on restart again. + */ + if (sd_fds > 0 +# ifdef HAVE_LIBSYSTEMD + && listeners[i].fd >= SD_LISTEN_FDS_START && + listeners[i].fd < SD_LISTEN_FDS_START + sd_fds +# endif + ) + continue; + + if(listeners[i].bUnlink) { + DBGPRINTF("imuxsock: unlinking unix socket file[%d] %s\n", i, listeners[i].sockName); + unlink((char*) listeners[i].sockName); + } + } + + discardLogSockets(); + nfd = 1; +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + free(listeners); + if(pInputName != NULL) + prop.Destruct(&pInputName); + + statsobj.Destruct(&modStats); + + objRelease(parser, CORE_COMPONENT); + objRelease(glbl, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(statsobj, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); +ENDmodExit + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + free(cs.pLogSockName); + cs.pLogSockName = NULL; + free(cs.pLogHostName); + cs.bOmitLocalLogging = 0; + cs.pLogHostName = NULL; + cs.bIgnoreTimestamp = 1; + cs.bIgnoreTimestampSysSock = 1; + cs.bUseFlowCtl = 0; + cs.bUseFlowCtlSysSock = 0; + cs.bUseSysTimeStamp = 1; + cs.bUseSysTimeStampSysSock = 1; + cs.bWritePid = 0; + cs.bWritePidSysSock = 0; + cs.bAnnotate = 0; + cs.bAnnotateSysSock = 0; + cs.bParseTrusted = 0; + cs.bCreatePath = DFLT_bCreatePath; + cs.ratelimitInterval = DFLT_ratelimitInterval; + cs.ratelimitIntervalSysSock = DFLT_ratelimitInterval; + cs.ratelimitBurst = DFLT_ratelimitBurst; + cs.ratelimitBurstSysSock = DFLT_ratelimitBurst; + cs.ratelimitSeverity = DFLT_ratelimitSeverity; + cs.ratelimitSeveritySysSock = DFLT_ratelimitSeverity; + + return RS_RET_OK; +} + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(net, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(parser, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + + DBGPRINTF("imuxsock version %s initializing\n", PACKAGE_VERSION); + + /* init legacy config vars */ + cs.pLogSockName = NULL; + cs.pLogHostName = NULL; /* host name to use with this socket */ + + /* we need to create the inputName property (only once during our lifetime) */ + CHKiRet(prop.Construct(&pInputName)); + CHKiRet(prop.SetString(pInputName, UCHAR_CONSTANT("imuxsock"), sizeof("imuxsock") - 1)); + CHKiRet(prop.ConstructFinalize(pInputName)); + + /* right now, glbl does not permit per-instance IP address notation. As long as this + * is the case, it is OK to query the HostIP once here at this location. HOWEVER, the + * whole concept is not 100% clean and needs to be addressed on a higher layer. + * TODO / rgerhards, 2012-04-11 + */ + pLocalHostIP = glbl.GetLocalHostIP(); + + /* register config file handlers */ + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputunixlistensocketignoremsgtimestamp", 0, eCmdHdlrBinary, + NULL, &cs.bIgnoreTimestamp, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputunixlistensockethostname", 0, eCmdHdlrGetWord, + NULL, &cs.pLogHostName, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputunixlistensocketflowcontrol", 0, eCmdHdlrBinary, + NULL, &cs.bUseFlowCtl, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputunixlistensocketannotate", 0, eCmdHdlrBinary, + NULL, &cs.bAnnotate, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputunixlistensocketcreatepath", 0, eCmdHdlrBinary, + NULL, &cs.bCreatePath, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputunixlistensocketusesystimestamp", 0, eCmdHdlrBinary, + NULL, &cs.bUseSysTimeStamp, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"addunixlistensocket", 0, eCmdHdlrGetWord, + addInstance, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputunixlistensocketusepidfromsystem", 0, eCmdHdlrBinary, + NULL, &cs.bWritePid, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imuxsockratelimitinterval", 0, eCmdHdlrInt, + NULL, &cs.ratelimitInterval, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imuxsockratelimitburst", 0, eCmdHdlrInt, + NULL, &cs.ratelimitBurst, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imuxsockratelimitseverity", 0, eCmdHdlrInt, + NULL, &cs.ratelimitSeverity, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); + /* the following one is a (dirty) trick: the system log socket is not added via + * an "addUnixListenSocket" config format. As such, it's properties can not be modified + * via $InputUnixListenSocket*". So we need to add a special directive + * for that. We should revisit all of that once we have the new config format... + * rgerhards, 2008-03-06 + */ + CHKiRet(regCfSysLineHdlr2((uchar *)"omitlocallogging", 0, eCmdHdlrBinary, + NULL, &cs.bOmitLocalLogging, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"systemlogsocketname", 0, eCmdHdlrGetWord, + NULL, &cs.pLogSockName, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"systemlogsocketignoremsgtimestamp", 0, eCmdHdlrBinary, + NULL, &cs.bIgnoreTimestampSysSock, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"systemlogsocketflowcontrol", 0, eCmdHdlrBinary, + NULL, &cs.bUseFlowCtlSysSock, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"systemlogusesystimestamp", 0, eCmdHdlrBinary, + NULL, &cs.bUseSysTimeStampSysSock, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"systemlogsocketannotate", 0, eCmdHdlrBinary, + NULL, &cs.bAnnotateSysSock, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"systemlogparsetrusted", 0, eCmdHdlrBinary, + NULL, &cs.bParseTrusted, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"systemlogusepidfromsystem", 0, eCmdHdlrBinary, + NULL, &cs.bWritePidSysSock, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"systemlogratelimitinterval", 0, eCmdHdlrInt, + NULL, &cs.ratelimitIntervalSysSock, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"systemlogratelimitburst", 0, eCmdHdlrInt, + NULL, &cs.ratelimitBurstSysSock, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(regCfSysLineHdlr2((uchar *)"systemlogratelimitseverity", 0, eCmdHdlrInt, + NULL, &cs.ratelimitSeveritySysSock, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + + /* support statistics gathering */ + CHKiRet(statsobj.Construct(&modStats)); + CHKiRet(statsobj.SetName(modStats, UCHAR_CONSTANT("imuxsock"))); + CHKiRet(statsobj.SetOrigin(modStats, UCHAR_CONSTANT("imuxsock"))); + STATSCOUNTER_INIT(ctrSubmit, mutCtrSubmit); + CHKiRet(statsobj.AddCounter(modStats, UCHAR_CONSTANT("submitted"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrSubmit)); + STATSCOUNTER_INIT(ctrLostRatelimit, mutCtrLostRatelimit); + CHKiRet(statsobj.AddCounter(modStats, UCHAR_CONSTANT("ratelimit.discarded"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrLostRatelimit)); + STATSCOUNTER_INIT(ctrNumRatelimiters, mutCtrNumRatelimiters); + CHKiRet(statsobj.AddCounter(modStats, UCHAR_CONSTANT("ratelimit.numratelimiters"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrNumRatelimiters)); + CHKiRet(statsobj.ConstructFinalize(modStats)); + +ENDmodInit diff --git a/plugins/mmanon/Makefile.am b/plugins/mmanon/Makefile.am new file mode 100644 index 0000000..98f0da2 --- /dev/null +++ b/plugins/mmanon/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = mmanon.la + +mmanon_la_SOURCES = mmanon.c +mmanon_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +mmanon_la_LDFLAGS = -module -avoid-version +mmanon_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/mmanon/Makefile.in b/plugins/mmanon/Makefile.in new file mode 100644 index 0000000..e3fc686 --- /dev/null +++ b/plugins/mmanon/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <ctype.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" +#include "hashtable.h" + + + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmanon") + + +DEF_OMOD_STATIC_DATA + +/* config variables */ + +// enumerator for the mode +enum mode {ZERO, RANDOMINT, SIMPLE}; + +union node { + struct { + union node* more; + union node* less; + } pointer; + struct { + char ip_high[16]; + char ip_low[16]; + } ips; +}; + +struct ipv6_int { + unsigned long long high; + unsigned long long low; + }; +/* define operation modes we have */ +#define SIMPLE_MODE 0 /* just overwrite */ +#define REWRITE_MODE 1 /* rewrite IP address, canoninized */ +typedef struct _instanceData { + struct { + sbool enable; + int8_t bits; + union node* Root; + int randConsis; + enum mode mode; + uchar replaceChar; + } ipv4; + + struct { + sbool enable; + uint8_t bits; + enum mode anonmode; + int randConsis; + struct hashtable* hash; + } ipv6; + + struct { + sbool enable; + uint8_t bits; + enum mode anonmode; + int randConsis; + struct hashtable* hash; + } embeddedIPv4; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + unsigned randstatus; +} wrkrInstanceData_t; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "ipv4.enable", eCmdHdlrBinary, 0 }, + { "ipv4.mode", eCmdHdlrGetWord, 0 }, + { "mode", eCmdHdlrGetWord, 0 }, + { "ipv4.bits", eCmdHdlrPositiveInt, 0 }, + { "ipv4.replacechar", eCmdHdlrGetChar, 0}, + { "replacementchar", eCmdHdlrGetChar, 0}, + { "ipv6.enable", eCmdHdlrBinary, 0 }, + { "ipv6.anonmode", eCmdHdlrGetWord, 0 }, + { "ipv6.bits", eCmdHdlrPositiveInt, 0 }, + { "embeddedipv4.enable", eCmdHdlrBinary, 0 }, + { "embeddedipv4.anonmode", eCmdHdlrGetWord, 0 }, + { "embeddedipv4.bits", eCmdHdlrPositiveInt, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pWrkrData->randstatus = time(NULL); +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +static void +delTree(union node* node, const int layer) +{ + if(node == NULL){ + return; + } + if(layer == 31){ + free(node); + } else { + delTree(node->pointer.more, layer + 1); + delTree(node->pointer.less, layer + 1); + free(node); + } +} + + +BEGINfreeInstance +CODESTARTfreeInstance + delTree(pData->ipv4.Root, 0); + if(pData->ipv6.hash != NULL) { + hashtable_destroy(pData->ipv6.hash, 1); + } + if(pData->embeddedIPv4.hash != NULL) { + hashtable_destroy(pData->embeddedIPv4.hash, 1); + } +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->ipv4.enable = 1; + pData->ipv4.bits = 16; + pData->ipv4.Root = NULL; + pData->ipv4.randConsis = 0; + pData->ipv4.mode = ZERO; + pData->ipv4.replaceChar = 'x'; + + pData->ipv6.enable = 1; + pData->ipv6.bits = 96; + pData->ipv6.anonmode = ZERO; + pData->ipv6.randConsis = 0; + pData->ipv6.hash = NULL; + + pData->embeddedIPv4.enable = 1; + pData->embeddedIPv4.bits = 96; + pData->embeddedIPv4.anonmode = ZERO; + pData->embeddedIPv4.randConsis = 0; + pData->embeddedIPv4.hash = NULL; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + DBGPRINTF("newActInst (mmanon)\n"); + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "ipv4.mode") || !strcmp(actpblk.descr[i].name, "mode")) { + if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"zero", + sizeof("zero")-1)) { + pData->ipv4.mode = ZERO; + } else if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"random", + sizeof("random")-1)) { + pData->ipv4.mode = RANDOMINT; + } else if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"simple", + sizeof("simple")-1) || + !es_strbufcmp(pvals[i].val.d.estr, (uchar*)"rewrite", + sizeof("rewrite")-1)) { + pData->ipv4.mode = SIMPLE; + } else if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"random-consistent", + sizeof("random-consistent")-1)) { + pData->ipv4.mode = RANDOMINT; + pData->ipv4.randConsis = 1; + } else { + parser_errmsg("mmanon: configuration error, unknown option for ipv4.mode, " + "will use \"zero\"\n"); + } + } else if(!strcmp(actpblk.descr[i].name, "ipv4.bits")) { + if((int8_t) pvals[i].val.d.n <= 32) { + pData->ipv4.bits = (int8_t) pvals[i].val.d.n; + } else { + pData->ipv4.bits = 32; + parser_errmsg("warning: invalid number of ipv4.bits (%d), corrected " + "to 32", (int) pvals[i].val.d.n); + } + } else if(!strcmp(actpblk.descr[i].name, "ipv4.enable")) { + pData->ipv4.enable = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "ipv4.replacechar") || !strcmp(actpblk.descr[i].name, + "replacementchar")) { + uchar* tmp = (uchar*) es_str2cstr(pvals[i].val.d.estr, NULL); + pData->ipv4.replaceChar = tmp[0]; + free(tmp); + } else if(!strcmp(actpblk.descr[i].name, "ipv6.enable")) { + pData->ipv6.enable = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "ipv6.bits")) { + if((uint8_t) pvals[i].val.d.n <= 128) { + pData->ipv6.bits = (uint8_t) pvals[i].val.d.n; + } else { + pData->ipv6.bits = 128; + parser_errmsg("warning: invalid number of ipv6.bits (%d), corrected " + "to 128", (int) pvals[i].val.d.n); + } + } else if(!strcmp(actpblk.descr[i].name, "ipv6.anonmode")) { + if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"zero", + sizeof("zero")-1)) { + pData->ipv6.anonmode = ZERO; + } else if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"random", + sizeof("random")-1)) { + pData->ipv6.anonmode = RANDOMINT; + } else if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"random-consistent", + sizeof("random-consistent")-1)) { + pData->ipv6.anonmode = RANDOMINT; + pData->ipv6.randConsis = 1; + } else { + parser_errmsg("mmanon: configuration error, unknown option for " + "ipv6.anonmode, will use \"zero\"\n"); + } + } else if(!strcmp(actpblk.descr[i].name, "embeddedipv4.enable")) { + pData->embeddedIPv4.enable = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "embeddedipv4.bits")) { + if((uint8_t) pvals[i].val.d.n <= 128) { + pData->embeddedIPv4.bits = (uint8_t) pvals[i].val.d.n; + } else { + pData->embeddedIPv4.bits = 128; + parser_errmsg("warning: invalid number of embeddedipv4.bits (%d), " + "corrected to 128", (int) pvals[i].val.d.n); + } + } else if(!strcmp(actpblk.descr[i].name, "embeddedipv4.anonmode")) { + if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"zero", + sizeof("zero")-1)) { + pData->embeddedIPv4.anonmode = ZERO; + } else if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"random", + sizeof("random")-1)) { + pData->embeddedIPv4.anonmode = RANDOMINT; + } else if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"random-consistent", + sizeof("random-consistent")-1)) { + pData->embeddedIPv4.anonmode = RANDOMINT; + pData->embeddedIPv4.randConsis = 1; + } else { + parser_errmsg("mmanon: configuration error, unknown option for ipv6.anonmode, " + "will use \"zero\"\n"); + } + } else { + parser_errmsg("mmanon: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + int bHadBitsErr = 0; + if(pData->ipv4.mode == SIMPLE) { + if(pData->ipv4.bits < 8 && pData->ipv4.bits > -1) { + pData->ipv4.bits = 8; + bHadBitsErr = 1; + } else if(pData->ipv4.bits < 16 && pData->ipv4.bits > 8) { + pData->ipv4.bits = 16; + bHadBitsErr = 1; + } else if(pData->ipv4.bits < 24 && pData->ipv4.bits > 16) { + pData->ipv4.bits = 24; + bHadBitsErr = 1; + } else if((pData->ipv4.bits != 32 && pData->ipv4.bits > 24) || pData->ipv4.bits < 0) { + pData->ipv4.bits = 32; + bHadBitsErr = 1; + } + if(bHadBitsErr) { + LogError(0, RS_RET_INVLD_ANON_BITS, + "mmanon: invalid number of ipv4 bits " + "in simple mode, corrected to %d", + pData->ipv4.bits); + } + } + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +static int +getHexVal(char c) +{ + if('0' <= c && c <= '9') { + return c - '0'; + } else if('a' <= c && c <= 'f') { + return (c - 'a') + 10; + } else if('A' <= c && c <= 'F') { + return (c - 'A') + 10; + } else { + return -1; + } +} + + +/* returns 1 if valid IPv4 digit, 0 if not */ +static int +isPosByte(const uchar *const __restrict__ buf, + const size_t buflen, + size_t *const __restrict__ nprocessed) +{ + int val = 0; /* Default means no byte found */ + size_t i; + for(i = 0 ; i < buflen; i++) { + if('0' <= buf[i] && buf[i] <= '9') { + /* Maximum 3 digits for single IPv4 Number, we only copy up to 4 numbers + * but process forward to non digits */ + if (i < 4) { + val = val*10 + buf[i]-'0'; + } + } else + break; + } + *nprocessed = i; + /* Return 1 if more than 1 and less the 4 digits and between 0 and 255 */ + if( i > 0 && + i < 4 && + (val >= 0 && val <= 255)) { + return 1; + } else { + return 0; + } +} + +/* 1 - is IPv4, 0 not */ +static int +syntax_ipv4(const uchar *const __restrict__ buf, + const size_t buflen, + size_t *const __restrict__ nprocessed) +{ + size_t nproc = 0; + size_t i; + int r = 0; + if(isPosByte(buf, buflen, &i) == 0) { + goto done; + } + if(i >= buflen || buf[i] != '.') { + goto done; + } + i++; + if(isdigit(buf[i]) == 0 || isPosByte(buf+i, buflen-i, &nproc) == 0) { + goto done; + } + i += nproc; + + if(i >= buflen || buf[i] != '.') { + goto done; + } + i++; + if(isdigit(buf[i]) == 0 || isPosByte(buf+i, buflen-i, &nproc) == 0) { + goto done; + } + i += nproc; + + if(i >= buflen || buf[i] != '.') { + goto done; + } + i++; + if(isdigit(buf[i]) == 0 || isPosByte(buf+i, buflen-i, &nproc) == 0) { + goto done; + } + i += nproc; + + *nprocessed = i; + r = 1; +done: + return r; +} + + +static int +isValidHexNum(const uchar *const __restrict__ buf, + const size_t buflen, + size_t *const __restrict__ nprocessed, + int handleDot) +{ + size_t idx = 0; + int cyc = 0; + + while(idx < buflen) { + switch(buf[idx]) { + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + + case 'a': + case 'b': + case 'c': + case 'd': + case 'e': + case 'f': + + case 'A': + case 'B': + case 'C': + case 'D': + case 'E': + case 'F': + cyc++; + (*nprocessed)++; + if(cyc == 5) { + goto done; + } + break; + case '.': + if(handleDot && cyc == 0) { + (*nprocessed)++; + cyc = -2; + } + goto done; + case ':': + if(cyc == 0) { + (*nprocessed)++; + cyc = -1; + } + goto done; + default: + goto done; + } + idx++; + } +done: + return cyc; +} + + +static int +syntax_ipv6(const uchar *const __restrict__ buf, + const size_t buflen, + size_t *const __restrict__ nprocessed) +{ + int lastSep = 0; + sbool hadAbbrev = 0; + sbool lastAbbrev = 0; + int ipParts = 0; + int numLen; + int isIP = 0; + + while(*nprocessed < buflen) { + numLen = isValidHexNum(buf + *nprocessed, buflen - *nprocessed, nprocessed, 0); + if(numLen > 0 && numLen < 5) { //found a valid num + if((ipParts == 7 && hadAbbrev) || ipParts > 7) { + isIP = 0; + goto done; + } + if (ipParts == 0 && lastSep && !hadAbbrev) { + isIP = 0; + goto done; + } + lastSep = 0; + lastAbbrev = 0; + ipParts++; + } else if (numLen < 0) { //':' + if(lastSep) { + if(hadAbbrev) { + isIP = 0; + goto done; + } else { + hadAbbrev = 1; + lastAbbrev = 1; + } + } + lastSep = 1; + } else if (numLen == 5) { // maybe truncated with port + if(hadAbbrev && ipParts >= 2) { + isIP = 1; + /* we need to go back 6 chars: + * 5 digits plus leading ":" which designates port! + */ + *nprocessed -= 6; + } else { + isIP = 0; + /* nprocessed need not be corrected - it's only used if isIP == 1 */ + } + goto done; + } else { //no valid num + if(lastSep) { + if(lastAbbrev && ipParts < 8) { + isIP = 1; + goto done; + } + isIP = 0; + goto done; + } + if((ipParts == 8 && !hadAbbrev) || (ipParts < 8 && hadAbbrev)) { + isIP = 1; + goto done; + } else { + isIP = 0; + goto done; + } + } + if(ipParts == 8 && !hadAbbrev) { + isIP = 1; + goto done; + } + } + + if((!lastSep && (ipParts == 8 && !hadAbbrev)) || (ipParts < 8 && hadAbbrev)) { + isIP = 1; + } + +done: + return isIP; +} + + +static unsigned +ipv42num(const char *str) +{ + unsigned num[4] = {0, 0, 0, 0}; + unsigned value = -1; + size_t len = strlen(str); + int cyc = 0; + for(unsigned i = 0 ; i < len ; i++) { + switch(str[i]) { + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + num[cyc] = num[cyc]*10+(str[i]-'0'); + break; + case '.': + cyc++; + break; + } + } + + value = num[0]*256*256*256+num[1]*256*256+num[2]*256+num[3]; + return(value); +} + + +static unsigned +code_int(unsigned ip, wrkrInstanceData_t *pWrkrData){ + unsigned random; + unsigned long long shiftIP_subst = ip; + // variable needed because shift operation of 32nd bit in unsigned does not work + switch(pWrkrData->pData->ipv4.mode) { + case ZERO: + shiftIP_subst = ((shiftIP_subst>>(pWrkrData->pData->ipv4.bits))<<(pWrkrData->pData->ipv4.bits)); + return (unsigned)shiftIP_subst; + case RANDOMINT: + shiftIP_subst = ((shiftIP_subst>>(pWrkrData->pData->ipv4.bits))<<(pWrkrData->pData->ipv4.bits)); + // multiply the random number between 0 and 1 with a mask of (2^n)-1: + random = (unsigned)((rand_r(&(pWrkrData->randstatus))/(double)RAND_MAX)* + ((1ull<<(pWrkrData->pData->ipv4.bits))-1)); + return (unsigned)shiftIP_subst + random; + case SIMPLE: //can't happen, since this case is caught at the start of anonipv4() + default: + LogError(0, RS_RET_INTERNAL_ERROR, "mmanon: unexpected code path reached in code_int function"); + return 0; + } +} + + +static int +num2ipv4(unsigned num, char *str) { + int numip[4]; + size_t len; + for(int i = 0 ; i < 4 ; i++){ + numip[i] = num % 256; + num = num / 256; + } + len = snprintf(str, 16, "%d.%d.%d.%d", numip[3], numip[2], numip[1], numip[0]); + return len; +} + + +static void +getip(uchar *start, size_t end, char *address) +{ + size_t i; + + for(i = 0; i < end; i++){ + address[i] = *(start+i); + } + address[i] = '\0'; +} + +/* in case of error with malloc causing abort of function, the + * string at the target of address remains the same */ +static rsRetVal +findip(char* address, wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + int i; + unsigned num; + union node* current; + union node* Last; + int MoreLess; + char* CurrentCharPtr; + + current = pWrkrData->pData->ipv4.Root; + num = ipv42num(address); + for(i = 0; i < 31; i++){ + if(pWrkrData->pData->ipv4.Root == NULL) { + CHKmalloc(current = (union node*)calloc(1, sizeof(union node))); + pWrkrData->pData->ipv4.Root = current; + } + Last = current; + if((num >> (31 - i)) & 1){ + current = current->pointer.more; + MoreLess = 1; + } else { + current = current->pointer.less; + MoreLess = 0; + } + if(current == NULL){ + CHKmalloc(current = (union node*)calloc(1, sizeof(union node))); + if(MoreLess == 1){ + Last->pointer.more = current; + } else { + Last->pointer.less = current; + } + } + } + if(num & 1){ + CurrentCharPtr = current->ips.ip_high; + } else { + CurrentCharPtr = current->ips.ip_low; + } + if(CurrentCharPtr[0] != '\0'){ + strcpy(address, CurrentCharPtr); + } else { + num = code_int(num, pWrkrData); + num2ipv4(num, CurrentCharPtr); + strcpy(address, CurrentCharPtr); + } +finalize_it: + RETiRet; +} + + +static void +process_IPv4 (char* address, wrkrInstanceData_t *pWrkrData) +{ + unsigned num; + + if(pWrkrData->pData->ipv4.randConsis){ + findip(address, pWrkrData); + }else { + num = ipv42num(address); + num = code_int(num, pWrkrData); + num2ipv4(num, address); + } +} + + +static void +simpleAnon(wrkrInstanceData_t *const pWrkrData, uchar *const msg, int *const hasChanged, int iplen) +{ + int maxidx = iplen - 1; + + int j = -1; + for(int i = (pWrkrData->pData->ipv4.bits / 8); i > 0; i--) { + j++; + while('0' <= msg[maxidx - j] && msg[maxidx - j] <= '9') { + if(msg[maxidx - j] != pWrkrData->pData->ipv4.replaceChar) { + msg[maxidx - j] = pWrkrData->pData->ipv4.replaceChar; + *hasChanged = 1; + } + j++; + } + } +} + + +static void +anonipv4(wrkrInstanceData_t *pWrkrData, uchar **msg, int *pLenMsg, int *idx, int *hasChanged) +{ + char address[16]; + char caddress[16]; + int offset = *idx; + uchar* msgcpy = *msg; + size_t iplen; + size_t caddresslen; + int oldLen = *pLenMsg; + + if(syntax_ipv4((*msg) + offset, *pLenMsg - offset, &iplen)) { + if(pWrkrData->pData->ipv4.mode == SIMPLE) { + simpleAnon(pWrkrData, *msg + *idx, hasChanged, iplen); + *idx += iplen; + return; + } + + assert(iplen < sizeof(address)); + getip(*msg + offset, iplen, address); + offset += iplen; + strcpy(caddress, address); + process_IPv4(caddress, pWrkrData); + caddresslen = strlen(caddress); + *hasChanged = 1; + + if(caddresslen != strlen(address)) { + *pLenMsg = *pLenMsg + ((int)caddresslen - (int)strlen(address)); + *msg = (uchar*) malloc(*pLenMsg); + memcpy(*msg, msgcpy, *idx); + } + memcpy(*msg + *idx, caddress, caddresslen); + *idx = *idx + caddresslen; + if(*idx < *pLenMsg) { + memcpy(*msg + *idx, msgcpy + offset, oldLen - offset); + } + if(msgcpy != *msg) { + free(msgcpy); + } + } +} + + +static void +code_ipv6_int(struct ipv6_int* ip, wrkrInstanceData_t *pWrkrData, int useEmbedded) +{ + unsigned long long randlow = 0; + unsigned long long randhigh = 0; + unsigned tmpRand; + int fullbits; + + int bits = useEmbedded ? pWrkrData->pData->embeddedIPv4.bits : pWrkrData->pData->ipv6.bits; + enum mode anonmode = useEmbedded ? pWrkrData->pData->embeddedIPv4.anonmode : pWrkrData->pData->ipv6.anonmode; + + if(bits == 128) { //has to be handled separately, since shift + //128 bits doesn't work on unsigned long long + ip->high = 0; + ip->low = 0; + } else if(bits > 64) { + ip->low = 0; + ip->high = (ip->high >> (bits - 64)) << (bits - 64); + } else if(bits == 64) { + ip->low = 0; + } else { + ip->low = (ip->low >> bits) << bits; + } + switch(anonmode) { + case ZERO: + break; + case RANDOMINT: + if(bits == 128) { + for(int i = 0; i < 8; i++) { + tmpRand = (unsigned)((rand_r(&(pWrkrData->randstatus))/(double)RAND_MAX)*0xff); + ip->high <<= 8; + ip->high |= tmpRand; + + tmpRand = (unsigned)((rand_r(&(pWrkrData->randstatus))/(double)RAND_MAX)*0xff); + ip->low <<= 8; + ip->low |= tmpRand; + } + } else if(bits > 64) { + for(int i = 0; i < 8; i++) { + tmpRand = (unsigned)((rand_r(&(pWrkrData->randstatus))/(double)RAND_MAX)*0xff); + ip->low <<= 8; + ip->low |= tmpRand; + } + + bits -= 64; + fullbits = bits / 8; + bits = bits % 8; + while(fullbits > 0) { + tmpRand = (unsigned)((rand_r(&(pWrkrData->randstatus))/(double)RAND_MAX)*0xff); + randhigh <<= 8; + randhigh |= tmpRand; + fullbits--; + } + tmpRand = (unsigned)((rand_r(&(pWrkrData->randstatus))/(double)RAND_MAX)*((1 << bits) - 1)); + randhigh <<= bits; + randhigh |= tmpRand; + + ip->high |= randhigh; + } else if(bits == 64) { + for(int i = 0; i < 8; i++) { + tmpRand = (unsigned)((rand_r(&(pWrkrData->randstatus))/(double)RAND_MAX)*0xff); + ip->low <<= 8; + ip->low |= tmpRand; + } + } else { + fullbits = bits / 8; + bits = bits % 8; + while(fullbits > 0) { + tmpRand = (unsigned)((rand_r(&(pWrkrData->randstatus))/(double)RAND_MAX)*0xff); + randlow <<= 8; + randlow |= tmpRand; + fullbits--; + } + tmpRand = (unsigned)((rand_r(&(pWrkrData->randstatus))/(double)RAND_MAX)*((1 << bits) - 1)); + randlow <<= bits; + randlow |= tmpRand; + + ip->low |= randlow; + } + break; + case SIMPLE: //can't happen, since this case is caught at the start of anonipv4() + default: + LogError(0, RS_RET_INTERNAL_ERROR, "mmanon: unexpected code path reached in code_int function"); + } +} + + +//separate function from recognising ipv6, since the recognition might get more +//complex. This function always stays +//the same, since it always gets an valid ipv6 input +static void +ipv62num(char* const address, const size_t iplen, struct ipv6_int* const ip) +{ + int num[8] = {0, 0, 0, 0, 0, 0, 0, 0}; + int cyc = 0; + int dots = 0; + int val; + unsigned i; + + for(i = 0; i < iplen && dots < 2; i++) { + val = getHexVal(address[i]); + if(val == -1) { + dots++; + if(dots < 2) { + cyc++; + } + } else { + num[cyc] = num[cyc] * 16 + val; + dots = 0; + } + } + if(dots == 2) { + if(i < iplen - 1) { + int shift = 0; + cyc = 7; + for(unsigned j = iplen - 1; j >= i; j--) { + val = getHexVal(address[j]); + if(val == -1) { + cyc--; + shift = 0; + } else { + val <<= shift; + shift += 4; + num[cyc] += val; + } + } + } else { + while(cyc < 8) { + num[cyc] = 0; + cyc++; + } + } + } + + for(i = 0; i < 4; i++) { + ip->high <<= 16; + ip->high |= num[i]; + } + while(i < 8) { + ip->low <<= 16; + ip->low |= num[i]; + i++; + } +} + + +static void +num2ipv6 (struct ipv6_int* ip, char* address) +{ + int num[8]; + int i; + + for(i = 7; i > 3; i--) { + num[i] = ip->low & 0xffff; + ip->low >>= 16; + } + while(i > -1) { + num[i] = ip->high & 0xffff; + ip->high >>= 16; + i--; + } + + snprintf(address, 40, "%x:%x:%x:%x:%x:%x:%x:%x", num[0], num[1], num[2], num[3], num[4], num[5], + num[6], num[7]); +} + + +static int +keys_equal_fn(void* key1, void* key2) +{ + struct ipv6_int *const k1 = (struct ipv6_int*) key1; + struct ipv6_int *const k2 = (struct ipv6_int*) key2; + + return((k1->high == k2->high) && (k1->low == k2->low)); +} + + +static unsigned +hash_from_key_fn (void* k) +{ + struct ipv6_int *const key = (struct ipv6_int*) k; + unsigned hashVal; + + hashVal = (key->high & 0xFFC00000) | (key->low & 0x3FFFFF); + return hashVal; +} + + +static void +num2embedded (struct ipv6_int* ip, char* address) +{ + int num[8]; + int i; + + for(i = 7; i > 3; i--) { + num[i] = ip->low & 0xffff; + ip->low >>= 16; + } + while(i > -1) { + num[i] = ip->high & 0xffff; + ip->high >>= 16; + i--; + } + + snprintf(address, 46, "%x:%x:%x:%x:%x:%x:%d.%d.%d.%d", num[0], num[1], num[2], num[3], num[4], num[5], + (num[6] & 0xff00) >> 8, num[6] & 0xff, (num[7] & 0xff00) >> 8, num[7] & 0xff); +} + + +static rsRetVal +findIPv6(struct ipv6_int* num, char* address, wrkrInstanceData_t *const pWrkrData, int useEmbedded) +{ + struct ipv6_int* hashKey = NULL; + DEFiRet; + struct hashtable* hash = useEmbedded? pWrkrData->pData->embeddedIPv4.hash : pWrkrData->pData->ipv6.hash; + + + if(hash == NULL) { + CHKmalloc(hash = create_hashtable(512, hash_from_key_fn, keys_equal_fn, NULL)); + if(useEmbedded) { + pWrkrData->pData->embeddedIPv4.hash = hash; + } else { + pWrkrData->pData->ipv6.hash = hash; + } + } + + char* val = (char*)(hashtable_search(hash, num)); + + if(val != NULL) { + strcpy(address, val); + } else { + CHKmalloc(hashKey = (struct ipv6_int*) malloc(sizeof(struct ipv6_int))); + hashKey->low = num->low; + hashKey->high = num->high; + + if(useEmbedded) { + code_ipv6_int(num, pWrkrData, 1); + num2embedded(num, address); + } else { + code_ipv6_int(num, pWrkrData, 0); + num2ipv6(num, address); + } + char* hashString; + CHKmalloc(hashString = strdup(address)); + + if(!hashtable_insert(hash, hashKey, hashString)) { + DBGPRINTF("hashtable error: insert to %s-table failed", + useEmbedded ? "embedded ipv4" : "ipv6"); + free(hashString); + ABORT_FINALIZE(RS_RET_ERR); + } + hashKey = NULL; + } +finalize_it: + free(hashKey); + RETiRet; +} + + +static void +process_IPv6 (char* address, wrkrInstanceData_t *pWrkrData, const size_t iplen) +{ + struct ipv6_int num = {0, 0}; + + ipv62num(address, iplen, &num); + + if(pWrkrData->pData->ipv6.randConsis) { + findIPv6(&num, address, pWrkrData, 0); + } else { + code_ipv6_int(&num, pWrkrData, 0); + num2ipv6(&num, address); + } +} + + +static void +anonipv6(wrkrInstanceData_t *pWrkrData, uchar **msg, int *pLenMsg, int *idx, int *hasChanged) +{ + size_t iplen = 0; + int offset = *idx; + char address[40]; + uchar* msgcpy = *msg; + size_t caddresslen; + size_t oldLen = *pLenMsg; + + int syn = syntax_ipv6(*msg + offset, *pLenMsg - offset, &iplen); + if(syn) { + assert(iplen < sizeof(address)); //has to be < instead of <= since address includes space for a '\0' + getip(*msg + offset, iplen, address); + offset += iplen; + process_IPv6(address, pWrkrData, iplen); + + caddresslen = strlen(address); + *hasChanged = 1; + + if(caddresslen != iplen) { + *pLenMsg = *pLenMsg + ((int)caddresslen - (int)iplen); + *msg = (uchar*) malloc(*pLenMsg); + memcpy(*msg, msgcpy, *idx); + } + memcpy(*msg + *idx, address, caddresslen); + *idx = *idx + caddresslen; + if(*idx < *pLenMsg) { + memcpy(*msg + *idx, msgcpy + offset, oldLen - offset); + } + if(msgcpy != *msg) { + free(msgcpy); + } + } +} + + +static size_t +findV4Start(const uchar *const __restrict__ buf, size_t dotPos) +{ + while(dotPos > 0) { + if(buf[dotPos] == ':') { + return dotPos + 1; + } + dotPos--; + } + return -1; //should not happen +} + + +static int +syntax_embedded(const uchar *const __restrict__ buf, + const size_t buflen, + size_t *const __restrict__ nprocessed, + size_t * v4Start) +{ + int lastSep = 0; + sbool hadAbbrev = 0; + int ipParts = 0; + int numLen; + int isIP = 0; + size_t ipv4Len; + + while(*nprocessed < buflen) { + numLen = isValidHexNum(buf + *nprocessed, buflen - *nprocessed, nprocessed, 1); + if(numLen > 0) { //found a valid num + if((ipParts == 6 && hadAbbrev) || ipParts > 6) { //is 6 since the first part of + //IPv4 will also result in a valid hexvalue + isIP = 0; + goto done; + } + if (ipParts == 0 && lastSep && !hadAbbrev) { + isIP = 0; + goto done; + } + lastSep = 0; + ipParts++; + } else if (numLen == -1) { //':' + if(lastSep) { + if(hadAbbrev) { + isIP = 0; + goto done; + } else { + hadAbbrev = 1; + } + } + lastSep = 1; + } else if (numLen == -2) { //'.' + if (lastSep || (ipParts == 0 && hadAbbrev) || (ipParts <= 6 && !hadAbbrev)) { + isIP = 0; + goto done; + } + *v4Start = findV4Start(buf, (*nprocessed) - 1); + if(syntax_ipv4(buf + (*v4Start), buflen, &ipv4Len)) { + *nprocessed += (ipv4Len - ((*nprocessed) - (*v4Start))); + isIP = 1; + goto done; + } else { + isIP = 0; + goto done; + } + } else { //no valid num + isIP = 0; + goto done; + } + } + + isIP = 0; + +done: + return isIP; +} + + +static void +embedded2num(char* address, size_t v4Start, struct ipv6_int* ip) +{ + int num[8] = {0, 0, 0, 0, 0, 0, 0, 0}; + int cyc = 0; + int dots = 0; + int val; + unsigned i; + + unsigned v4Val = ipv42num(address + v4Start); + num[7] = v4Val & 0xffff; + num[6] = (v4Val & 0xffff0000) >> 16; + + for(i = 0; i < v4Start && dots < 2; i++) { + val = getHexVal(address[i]); + if(val == -1) { + dots++; + if(dots < 2) { + cyc++; + } + } else { + num[cyc] = num[cyc] * 16 + val; + dots = 0; + } + } + if(dots == 2) { + if(i < v4Start) { + int shift = 0; + cyc = 5; + for(unsigned j = v4Start - 1; j >= i; j--) { + val = getHexVal(address[j]); + if(val == -1) { + cyc--; + shift = 0; + } else { + val <<= shift; + shift += 4; + num[cyc] += val; + } + } + } else { + while(cyc < 6) { + num[cyc] = 0; + cyc++; + } + } + } + + for(i = 0; i < 4; i++) { + ip->high <<= 16; + ip->high |= num[i]; + } + while(i < 8) { + ip->low <<= 16; + ip->low |= num[i]; + i++; + } +} + + +static void +process_embedded (char* address, wrkrInstanceData_t *pWrkrData, size_t v4Start) +{ + struct ipv6_int num = {0, 0}; + + embedded2num(address, v4Start, &num); + + if(pWrkrData->pData->embeddedIPv4.randConsis) { + findIPv6(&num, address, pWrkrData, 1); + } else { + code_ipv6_int(&num, pWrkrData, 1); + num2embedded(&num, address); + } +} + + +static void +anonEmbedded(wrkrInstanceData_t *pWrkrData, uchar **msg, int *pLenMsg, int *idx, int *hasChanged) +{ + size_t iplen = 0; + int offset = *idx; + char address[46]; + uchar* msgcpy = *msg; + unsigned caddresslen; + size_t oldLen = *pLenMsg; + size_t v4Start; + + int syn = syntax_embedded(*msg + offset, *pLenMsg - offset, &iplen, &v4Start); + if(syn) { + assert(iplen < sizeof(address)); + getip(*msg + offset, iplen, address); + offset += iplen; + process_embedded(address, pWrkrData, v4Start); + + caddresslen = strlen(address); + *hasChanged = 1; + + if(caddresslen != iplen) { + *pLenMsg = *pLenMsg + ((int)caddresslen - (int)iplen); + *msg = (uchar*) malloc(*pLenMsg); + memcpy(*msg, msgcpy, *idx); + } + memcpy(*msg + *idx, address, caddresslen); + *idx = *idx + caddresslen; + if(*idx < *pLenMsg) { + memcpy(*msg + *idx, msgcpy + offset, oldLen - offset); + } + if(msgcpy != *msg) { + free(msgcpy); + } + } +} + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; + uchar *msg; + int lenMsg; + int i; + int hasChanged = 0; +CODESTARTdoAction + lenMsg = getMSGLen(pMsg); + msg = (uchar*)strdup((char*)getMSG(pMsg)); + + for(i = 0 ; i <= lenMsg - 2 ; i++) { + if(pWrkrData->pData->embeddedIPv4.enable) { + anonEmbedded(pWrkrData, &msg, &lenMsg, &i, &hasChanged); + } + if(pWrkrData->pData->ipv4.enable) { + anonipv4(pWrkrData, &msg, &lenMsg, &i, &hasChanged); + } + if(pWrkrData->pData->ipv6.enable) { + anonipv6(pWrkrData, &msg, &lenMsg, &i, &hasChanged); + } + } + if(hasChanged) { + MsgReplaceMSG(pMsg, msg, lenMsg); + } + free(msg); +ENDdoAction + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + DBGPRINTF("mmanon: module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git a/plugins/mmaudit/Makefile.am b/plugins/mmaudit/Makefile.am new file mode 100644 index 0000000..77b2e85 --- /dev/null +++ b/plugins/mmaudit/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = mmaudit.la + +mmaudit_la_SOURCES = mmaudit.c +mmaudit_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +mmaudit_la_LDFLAGS = -module -avoid-version +mmaudit_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/mmaudit/Makefile.in b/plugins/mmaudit/Makefile.in new file mode 100644 index 0000000..4f88459 --- /dev/null +++ b/plugins/mmaudit/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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The module tries to identify the provided + * message as being a Linux audit record and, if so, converts it into + * cee-enhanced syslog format. + * + * NOTE WELL: + * Right now, we do not do any trust checks. So it is possible that a + * malicous user emits something that looks like an audit record and + * tries to fool the system with that. Solving this trust issue is NOT + * an easy thing to do. This will be worked on, as the lumberjack effort + * continues. Please consider the module in its current state as a proof + * of concept. + * + * File begun on 2012-02-23 by RGerhards + * + * Copyright 2013-2016 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <ctype.h> +#include <json.h> +#include "conf.h" +#include "syslogd-types.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "cfsysline.h" +#include "dirty.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP + + +/* static data */ + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +typedef struct _instanceData { + int dummy; /* remove when the first real parameter is needed */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars +ENDinitConfVars + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + dbgprintf("mmaudit\n"); +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +static void +skipWhitespace(uchar **buf) +{ + while(**buf && isspace(**buf)) + ++(*buf); +} + + +static rsRetVal +parseName(uchar **buf, char *name, unsigned lenName) +{ + unsigned i; + skipWhitespace(buf); + --lenName; /* reserve space for '\0' */ + i = 0; + while(**buf && **buf != '=' && lenName) { + name[i++] = **buf; + ++(*buf), --lenName; + } + name[i] = '\0'; + return RS_RET_OK; +} + + +static rsRetVal +parseValue(uchar **buf, char *val, unsigned lenval) +{ + char termc; + unsigned i; + DEFiRet; + + --lenval; /* reserve space for '\0' */ + i = 0; + if(**buf == '\0') { + FINALIZE; + } else if(**buf == '\'') { + termc = '\''; + ++(*buf); + } else if(**buf == '"') { + termc = '"'; + ++(*buf); + } else { + termc = ' '; + } + + while(**buf && **buf != termc && lenval) { + val[i++] = **buf; + ++(*buf), --lenval; + } + val[i] = '\0'; + +finalize_it: + RETiRet; +} + + +/* parse the audit record and create json structure + */ +static rsRetVal +audit_parse(uchar *buf, struct json_object **jsonRoot) +{ + struct json_object *json; + struct json_object *jval; + char name[1024]; + char val[1024]; + DEFiRet; + + *jsonRoot = json_object_new_object(); + if(*jsonRoot == NULL) { + ABORT_FINALIZE(RS_RET_ERR); + } + json = json_object_new_object(); + json_object_object_add(*jsonRoot, "data", json); + + while(*buf) { + CHKiRet(parseName(&buf, name, sizeof(name))); + if(*buf != '=') { + ABORT_FINALIZE(RS_RET_ERR); + } + ++buf; + CHKiRet(parseValue(&buf, val, sizeof(val))); + jval = json_object_new_string(val); + json_object_object_add(json, name, jval); + } + + +finalize_it: + RETiRet; +} + + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; + uchar *buf; + int typeID; + struct json_object *jsonRoot; + struct json_object *json; + struct json_object *jval; + int i; + char auditID[1024]; + int bSuccess = 0; +CODESTARTdoAction + /* note that we can performance-optimize the interface, but this also + * requires changes to the libraries. For now, we accept message + * duplication. -- rgerhards, 2010-12-01 + */ + buf = getMSG(pMsg); + + while(*buf && isspace(*buf)) { + ++buf; + } + + if(*buf == '\0' || strncmp((char*)buf, "type=", 5)) { + DBGPRINTF("mmaudit: type= undetected: '%s'\n", buf); + FINALIZE; + } + buf += 5; + + typeID = 0; + while(*buf && isdigit(*buf)) { + typeID = typeID * 10 + *buf - '0'; + ++buf; + } + + if(*buf == '\0' || strncmp((char*)buf, " audit(", sizeof(" audit(")-1)) { + DBGPRINTF("mmaudit: audit( header not found: %s'\n", buf); + FINALIZE; + } + buf += sizeof(" audit("); + + for(i = 0 ; i < (int) (sizeof(auditID)-2) && *buf && *buf != ')' ; ++i) { + auditID[i] = *buf++; + } + auditID[i] = '\0'; + if(*buf != ')' || *(buf+1) != ':') { + DBGPRINTF("mmaudit: trailer '):' not found, no audit record: %s'\n", buf); + FINALIZE; + } + buf += 2; + + audit_parse(buf, &jsonRoot); + if(jsonRoot == NULL) { + DBGPRINTF("mmaudit: audit parse error, assuming no " + "audit message: '%s'\n", buf); + FINALIZE; + } + + /* we now need to shuffle the "outer" properties into that stream */ + json = json_object_new_object(); + json_object_object_add(jsonRoot, "hdr", json); + jval = json_object_new_string(auditID); + json_object_object_add(json, "auditid", jval); + jval = json_object_new_int(typeID); + json_object_object_add(json, "type", jval); + + msgAddJSON(pMsg, (uchar*)"!audit", jsonRoot, 0, 0); + bSuccess = 1; + +finalize_it: + MsgSetParseSuccess(pMsg, bSuccess); +ENDdoAction + + +BEGINparseSelectorAct +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* first check if this config line is actually for us */ + if(strncmp((char*) p, ":mmaudit:", sizeof(":mmaudit:") - 1)) { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + p += sizeof(":mmaudit:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + CHKiRet(createInstance(&pData)); + + /* check if a non-standard template is to be applied */ + if(*(p-1) == ';') + --p; + /* we call the function below because we need to call it via our interface definition. However, + * the format specified (if any) is always ignored. + */ + iRet = cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_TPL_AS_MSG, (uchar*) "RSYSLOG_FileFormat"); +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() + rsRetVal localRet; + rsRetVal (*pomsrGetSupportedTplOpts)(unsigned long *pOpts); + unsigned long opts; + int bMsgPassingSupported; +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; + /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + /* check if the rsyslog core supports parameter passing code */ + bMsgPassingSupported = 0; + localRet = pHostQueryEtryPt((uchar*)"OMSRgetSupportedTplOpts", + &pomsrGetSupportedTplOpts); + if(localRet == RS_RET_OK) { + /* found entry point, so let's see if core supports msg passing */ + CHKiRet((*pomsrGetSupportedTplOpts)(&opts)); + if(opts & OMSR_TPL_AS_MSG) + bMsgPassingSupported = 1; + } else if(localRet != RS_RET_ENTRY_POINT_NOT_FOUND) { + ABORT_FINALIZE(localRet); /* Something else went wrong, not acceptable */ + } + + if(!bMsgPassingSupported) { + DBGPRINTF("mmaudit: msg-passing is not supported by rsyslog core, " + "can not continue.\n"); + ABORT_FINALIZE(RS_RET_NO_MSG_PASSING); + } + +ENDmodInit + +/* vi:set ai: + */ diff --git a/plugins/mmdblookup/Makefile.am b/plugins/mmdblookup/Makefile.am new file mode 100644 index 0000000..bb7c156 --- /dev/null +++ b/plugins/mmdblookup/Makefile.am @@ -0,0 +1,14 @@ +pkglib_LTLIBRARIES = mmdblookup.la + +if MMDBLOOKUP_USE_DUMMY +mmdblookup_la_SOURCES = dummy.c +mmdblookup_la_LDFLAGS = -module -avoid-version +else +mmdblookup_la_SOURCES = mmdblookup.c +mmdblookup_la_LDFLAGS = -module -avoid-version -lmaxminddb +endif + +mmdblookup_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +mmdblookup_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/mmdblookup/Makefile.in b/plugins/mmdblookup/Makefile.in new file mode 100644 index 0000000..15f2a88 --- /dev/null +++ b/plugins/mmdblookup/Makefile.in @@ -0,0 +1,814 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/mmdblookup/dummy.c b/plugins/mmdblookup/dummy.c new file mode 100644 index 0000000..1b18aef --- /dev/null +++ b/plugins/mmdblookup/dummy.c @@ -0,0 +1,172 @@ +/* a dummy module to be loaded if we cannot build this module, but + * configure required it to be "optional". + * + * Copyright 2020 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define MODULE_NAME "mmdblookup" /* how are we named? */ + +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include <pthread.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" + + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME(MODULE_NAME) + + +DEF_OMOD_STATIC_DATA + +/* config variables */ +typedef struct _instanceData { + char *dummy; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData ATTR_UNUSED; +} wrkrInstanceData_t; + +struct modConfData_s { +}; + +/* modConf ptr to use for the current load process */ +static modConfData_t *loadModConf = NULL; +/* modConf ptr to use for the current exec process */ +static modConfData_t *runModConf = NULL; + + + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINsetModCnf +CODESTARTsetModCnf + (void) lst; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME); +ENDsetModCnf + + +BEGINnewActInst +CODESTARTnewActInst + (void) pData; + (void) ppModData; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +BEGINdoAction_NoStrings +CODESTARTdoAction + (void) pMsgData; +ENDdoAction + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + /* we only support the current interface specification */ + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + dbgprintf("mmdblookup: module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git a/plugins/mmdblookup/mmdblookup.c b/plugins/mmdblookup/mmdblookup.c new file mode 100644 index 0000000..f9f3c73 --- /dev/null +++ b/plugins/mmdblookup/mmdblookup.c @@ -0,0 +1,517 @@ +/* mmdblookup.c + * Parse ipaddress field of the message into structured data using + * MaxMindDB. + * + * Copyright 2013 Rao Chenlin. + * Copyright 2017 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include <pthread.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" + +#include "maxminddb.h" + +#define JSON_IPLOOKUP_NAME "!iplocation" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmdblookup") + + +DEF_OMOD_STATIC_DATA + +/* config variables */ +typedef struct _instanceData { + char *pszKey; + char *pszMmdbFile; + struct { + int nmemb; + char **name; + char **varname; + } fieldList; + sbool reloadOnHup; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + MMDB_s mmdb; + pthread_mutex_t mmdbMutex; + sbool mmdb_is_open; +} wrkrInstanceData_t; + +struct modConfData_s { + /* our overall config object */ + rsconf_t *pConf; + const char *container; +}; + +/* modConf ptr to use for the current load process */ +static modConfData_t *loadModConf = NULL; +/* modConf ptr to use for the current exec process */ +static modConfData_t *runModConf = NULL; + + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "container", eCmdHdlrGetWord, 0 }, +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* tables for interfacing with the v6 config system + * action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "key", eCmdHdlrGetWord, CNFPARAM_REQUIRED }, + { "mmdbfile", eCmdHdlrGetWord, CNFPARAM_REQUIRED }, + { "fields", eCmdHdlrArray, CNFPARAM_REQUIRED }, + { "reloadonhup", eCmdHdlrBinary, 0 }, +}; +static struct cnfparamblk actpblk = { + CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr +}; + + +/* protype functions */ +void str_split(char **membuf); + +int open_mmdb(const char *file, MMDB_s *mmdb); +void close_mmdb(MMDB_s *mmdb); + + +int open_mmdb(const char *file, MMDB_s *mmdb) { + int status = MMDB_open(file, MMDB_MODE_MMAP, mmdb); + if (MMDB_SUCCESS != status) { + dbgprintf("Can't open %s - %s\n", file, MMDB_strerror(status)); + if (MMDB_IO_ERROR == status) { + dbgprintf(" IO error: %s\n", strerror(errno)); + } + LogError(0, RS_RET_SUSPENDED, "maxminddb error: cannot open database file"); + return RS_RET_SUSPENDED; + } + + return RS_RET_OK; +} + +void close_mmdb(MMDB_s *mmdb) { + MMDB_close(mmdb); +} + +static rsRetVal wrkr_reopen_mmdb(wrkrInstanceData_t *pWrkrData) { + DEFiRet; + pthread_mutex_lock(&pWrkrData->mmdbMutex); + LogMsg(0, NO_ERRCODE, LOG_INFO, "mmdblookup: reopening MMDB file"); + if (pWrkrData->mmdb_is_open) close_mmdb(&pWrkrData->mmdb); + pWrkrData->mmdb_is_open = 0; + CHKiRet(open_mmdb(pWrkrData->pData->pszMmdbFile, &pWrkrData->mmdb)); + pWrkrData->mmdb_is_open = 1; + +finalize_it: + pthread_mutex_unlock(&pWrkrData->mmdbMutex); + RETiRet; +} + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf + free((void*)runModConf->container); +ENDfreeCnf + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + CHKiRet(open_mmdb(pData->pszMmdbFile, &pWrkrData->mmdb)); + pWrkrData->mmdb_is_open = 1; + CHKiConcCtrl(pthread_mutex_init(&pWrkrData->mmdbMutex, NULL)); +finalize_it: +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + if(pData->fieldList.name != NULL) { + for(int i = 0 ; i < pData->fieldList.nmemb ; ++i) { + free(pData->fieldList.name[i]); + free(pData->fieldList.varname[i]); + } + free(pData->fieldList.name); + free(pData->fieldList.varname); + } + free(pData->pszKey); + free(pData->pszMmdbFile); +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + if (pWrkrData->mmdb_is_open) close_mmdb(&pWrkrData->mmdb); + pWrkrData->mmdb_is_open = 0; + pthread_mutex_destroy(&pWrkrData->mmdbMutex); +ENDfreeWrkrInstance + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + loadModConf->container = NULL; + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "mmdblookup: error processing module " + "config parameters missing [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for mmdblookup:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "container")) { + loadModConf->container = es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("mmdblookup: program error, non-handled " + "param '%s' in setModCnf\n", modpblk.descr[i].name); + } + } + + if(loadModConf->container == NULL) { + CHKmalloc(loadModConf->container = strdup(JSON_IPLOOKUP_NAME)); + } + +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->pszKey = NULL; + pData->pszMmdbFile = NULL; + pData->fieldList.nmemb = 0; + pData->reloadOnHup = 1; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + dbgprintf("newActInst (mmdblookup)\n"); + if ((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for (i = 0; i < actpblk.nParams; ++i) { + if (!pvals[i].bUsed) + continue; + if (!strcmp(actpblk.descr[i].name, "key")) { + pData->pszKey = es_str2cstr(pvals[i].val.d.estr, NULL); + } else if (!strcmp(actpblk.descr[i].name, "mmdbfile")) { + pData->pszMmdbFile = es_str2cstr(pvals[i].val.d.estr, NULL); + } else if (!strcmp(actpblk.descr[i].name, "fields")) { + pData->fieldList.nmemb = pvals[i].val.d.ar->nmemb; + CHKmalloc(pData->fieldList.name = calloc(pData->fieldList.nmemb, sizeof(char *))); + CHKmalloc(pData->fieldList.varname = calloc(pData->fieldList.nmemb, sizeof(char *))); + for (int j = 0; j < pvals[i].val.d.ar->nmemb; ++j) { + char *const param = es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + char *varname = NULL; + char *name; + if(*param == ':') { + char *b = strchr(param+1, ':'); + if(b == NULL) { + parser_errmsg("mmdblookup: missing closing colon: '%s'", param); + ABORT_FINALIZE(RS_RET_ERR); + } + *b = '\0'; /* split name & varname */ + varname = param+1; + name = b+1; + } else { + name = param; + } + if(*name == '!') + ++name; + CHKmalloc(pData->fieldList.name[j] = strdup(name)); + char vnamebuf[1024]; + snprintf(vnamebuf, sizeof(vnamebuf), + "%s!%s", loadModConf->container, + (varname == NULL) ? name : varname); + CHKmalloc(pData->fieldList.varname[j] = strdup(vnamebuf)); + free(param); + } + } else if(!strcmp(actpblk.descr[i].name, "reloadonhup")) { + pData->reloadOnHup = pvals[i].val.d.n; + } else { + dbgprintf("mmdblookup: program error, non-handled" + " param '%s'\n", actpblk.descr[i].name); + } + } + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume + iRet = wrkr_reopen_mmdb(pWrkrData); +ENDtryResume + + +void +str_split(char **membuf) +{ + int in_quotes = 0; + char *buf = *membuf; + char tempbuf[strlen(buf)]; + memset(tempbuf, 0, strlen(buf)); + + while (*buf++ != '\0') { + if (in_quotes) { + if (*buf == '"' && *(buf - 1) != '\\') { + in_quotes = !in_quotes; + strncat(tempbuf, buf, 1); + } else { + strncat(tempbuf, buf, 1); + } + } else { + if (*buf == '\n' || *buf == '\t' || *buf == ' ') + continue; + if (*buf == '<') { + char *p = strchr(buf, '>'); + buf = buf + (int)(p - buf); + strcat(tempbuf, ","); + } else if (*buf == '}') { + strcat(tempbuf, "},"); + } else if (*buf == ']') { + strcat(tempbuf, "],"); + } else if (*buf == '"' && *(buf - 1) != '\\') { + in_quotes = !in_quotes; + strncat(tempbuf, buf, 1); + } else { + strncat(tempbuf, buf, 1); + } + } + } + + memcpy(*membuf, tempbuf, strlen(tempbuf)+1); +} + + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; + struct json_object *keyjson = NULL; + const char *pszValue; + instanceData *const pData = pWrkrData->pData; + json_object *total_json = NULL; + MMDB_entry_data_list_s *entry_data_list = NULL; +CODESTARTdoAction + /* ensure file is open before beginning */ + if (!pWrkrData->mmdb_is_open) { + CHKiRet(wrkr_reopen_mmdb(pWrkrData)); + } + + /* key is given, so get the property json */ + msgPropDescr_t pProp; + msgPropDescrFill(&pProp, (uchar*)pData->pszKey, strlen(pData->pszKey)); + rsRetVal localRet = msgGetJSONPropJSON(pMsg, &pProp, &keyjson); + msgPropDescrDestruct(&pProp); + + pthread_mutex_lock(&pWrkrData->mmdbMutex); + if (localRet != RS_RET_OK) { + /* key not found in the message. nothing to do */ + ABORT_FINALIZE(RS_RET_OK); + } + /* key found, so get the value */ + pszValue = (char*)json_object_get_string(keyjson); + if(pszValue == NULL) { /* json null object returns NULL! */ + pszValue = ""; + } + + int gai_err, mmdb_err; + MMDB_lookup_result_s result = MMDB_lookup_string(&pWrkrData->mmdb, pszValue, &gai_err, &mmdb_err); + + if (0 != gai_err) { + dbgprintf("Error from call to getaddrinfo for %s - %s\n", pszValue, gai_strerror(gai_err)); + ABORT_FINALIZE(RS_RET_OK); + } + if (MMDB_SUCCESS != mmdb_err) { + dbgprintf("Got an error from the maxminddb library: %s\n", MMDB_strerror(mmdb_err)); + close_mmdb(&pWrkrData->mmdb); + pWrkrData->mmdb_is_open = 0; + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + if (!result.found_entry) { + dbgprintf("No entry found in database for '%s'\n", pszValue); + ABORT_FINALIZE(RS_RET_OK); + } + + + int status = MMDB_get_entry_data_list(&result.entry, &entry_data_list); + + if (MMDB_SUCCESS != status) { + dbgprintf("Got an error looking up the entry data - %s\n", MMDB_strerror(status)); + ABORT_FINALIZE(RS_RET_OK); + } + + size_t memlen; + char *membuf; + FILE *memstream; + CHKmalloc(memstream = open_memstream(&membuf, &memlen)); + + if (entry_data_list != NULL && memstream != NULL) { + MMDB_dump_entry_data_list(memstream, entry_data_list, 2); + fflush(memstream); + str_split(&membuf); + } + + DBGPRINTF("maxmindb returns: '%s'\n", membuf); + total_json = json_tokener_parse(membuf); + fclose(memstream); + free(membuf); + + /* extract and amend fields (to message) as configured */ + for (int i = 0 ; i < pData->fieldList.nmemb; ++i) { + char *strtok_save; + char buf[(strlen((char *)(pData->fieldList.name[i])))+1]; + strcpy(buf, (char *)pData->fieldList.name[i]); + + json_object *temp_json = total_json; + json_object *sub_obj = temp_json; + int j = 0; + const char *SEP = "!"; + + /* find lowest level JSON object */ + char *s = strtok_r(buf, SEP, &strtok_save); + for (; s != NULL; j++) { + json_object_object_get_ex(temp_json, s, &sub_obj); + temp_json = sub_obj; + s = strtok_r(NULL, SEP, &strtok_save); + } + /* temp_json now contains the value we want to have, so set it */ + json_object_get(temp_json); + msgAddJSON(pMsg, (uchar *)pData->fieldList.varname[i], temp_json, 0, 0); + } + +finalize_it: + pthread_mutex_unlock(&pWrkrData->mmdbMutex); + if(entry_data_list != NULL) + MMDB_free_entry_data_list(entry_data_list); + json_object_put(keyjson); + if(total_json != NULL) + json_object_put(total_json); +ENDdoAction + +// HUP handling for the worker... +BEGINdoHUPWrkr +CODESTARTdoHUPWrkr + dbgprintf("mmdblookup: HUP received\n"); + if (pWrkrData->pData->reloadOnHup) { + iRet = wrkr_reopen_mmdb(pWrkrData); + } +ENDdoHUPWrkr + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_doHUPWrkr +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + /* we only support the current interface specification */ + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + dbgprintf("mmdblookup: module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git 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This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/wait.h> +#include <sys/uio.h> +#include "rsyslog.h" +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "module-template.h" +#include "msg.h" +#include "errmsg.h" +#include "cfsysline.h" +#include "glbl.h" +#include "rsconf.h" + + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmexternal") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +typedef struct _instanceData { + uchar *szBinary; /* name of binary to call */ + char **aParams; /* Optional Parameters for binary command */ + int iParams; /* Holds the count of parameters if set*/ + int bForceSingleInst; /* only a single wrkr instance of program permitted? */ + int inputProp; /* what to provide as input to the external program? */ +#define INPUT_MSG 0 +#define INPUT_RAWMSG 1 +#define INPUT_JSON 2 + uchar *outputFileName; /* name of file for std[out/err] or NULL if to discard */ + pthread_mutex_t mut; /* make sure only one instance is active */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + pid_t pid; /* pid of currently running process */ + int fdOutput; /* it's fd (-1 if closed) */ + int fdPipeOut; /* file descriptor to write to */ + int fdPipeIn; /* fd we receive messages from the program (if we want to) */ + int bIsRunning; /* is binary currently running? 0-no, 1-yes */ + char *respBuf; /* buffer to read exernal plugin's response */ + int maxLenRespBuf; /* (current) maximum length of response buffer */ + int lenRespBuf; /* actual nbr of chars in response buffer */ + int idxRespBuf; /* last char read from response buffer */ +} wrkrInstanceData_t; + +typedef struct configSettings_s { + uchar *szBinary; /* name of binary to call */ +} configSettings_t; +static configSettings_t cs; + + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "binary", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "interface.input", eCmdHdlrString, 0 }, + { "output", eCmdHdlrString, 0 }, + { "forcesingleinstance", eCmdHdlrBinary, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + cs.szBinary = NULL; /* name of binary to call */ +ENDinitConfVars + +/* config settings */ + +BEGINcreateInstance +CODESTARTcreateInstance + pData->inputProp = INPUT_MSG; + pthread_mutex_init(&pData->mut, NULL); +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pWrkrData->fdPipeIn = -1; + pWrkrData->fdPipeOut = -1; + pWrkrData->fdOutput = -1; + pWrkrData->bIsRunning = 0; + pWrkrData->respBuf = NULL; + pWrkrData->maxLenRespBuf = 0; + pWrkrData->lenRespBuf = 0; + pWrkrData->idxRespBuf = 0; +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINfreeInstance + int i; +CODESTARTfreeInstance + pthread_mutex_destroy(&pData->mut); + free(pData->szBinary); + free(pData->outputFileName); + if(pData->aParams != NULL) { + for (i = 0; i < pData->iParams; i++) { + free(pData->aParams[i]); + } + free(pData->aParams); + } +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + free(pWrkrData->respBuf); +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +/* As this is just a debug function, we only make + * best effort to write the message but do *not* try very + * hard to handle errors. -- rgerhards, 2014-01-16 + */ +static void +writeOutputDebug(wrkrInstanceData_t *__restrict__ const pWrkrData, + const char *__restrict__ const buf, + const ssize_t lenBuf) +{ + char errStr[1024]; + ssize_t r; + + if(pWrkrData->pData->outputFileName == NULL) + goto done; + + if(pWrkrData->fdOutput == -1) { + pWrkrData->fdOutput = open((char*)pWrkrData->pData->outputFileName, + O_WRONLY | O_APPEND | O_CREAT, 0600); + if(pWrkrData->fdOutput == -1) { + DBGPRINTF("mmexternal: error opening output file %s: %s\n", + pWrkrData->pData->outputFileName, + rs_strerror_r(errno, errStr, sizeof(errStr))); + goto done; + } + } + + r = write(pWrkrData->fdOutput, buf, (size_t) lenBuf); + if(r != lenBuf) { + DBGPRINTF("mmexternal: problem writing output file %s: bytes " + "requested %lld, written %lld, msg: %s\n", + pWrkrData->pData->outputFileName, (long long) lenBuf, (long long) r, + rs_strerror_r(errno, errStr, sizeof(errStr))); + } +done: return; +} + + +/* Get reply from external program. Note that we *must* receive one + * reply for each message sent (half-duplex protocol). As such, the last + * char we read MUST be \n ... we cannot have multiple LF as this is + * forbidden by the plugin interface. We cannot have multiple responses + * for multiple messages, as we are in half-duplex mode! This makes + * things quite a bit simpler. So don't think the simple code does + * not handle those border-cases that are describe to cannot exist! + */ +static void +processProgramReply(wrkrInstanceData_t *__restrict__ const pWrkrData, smsg_t *const pMsg) +{ + rsRetVal iRet; + char errStr[1024]; + ssize_t r; + int numCharsRead; + char *newptr; + + numCharsRead = 0; + do { + if(pWrkrData->maxLenRespBuf < numCharsRead + 256) { /* 256 to permit at least a decent read */ + pWrkrData->maxLenRespBuf += 4096; + if((newptr = realloc(pWrkrData->respBuf, pWrkrData->maxLenRespBuf)) == NULL) { + DBGPRINTF("mmexternal: error realloc responseBuf: %s\n", + rs_strerror_r(errno, errStr, sizeof(errStr))); + /* emergency - fake no update */ + strcpy(pWrkrData->respBuf, "{}\n"); + numCharsRead = 3; + break; + } + pWrkrData->respBuf = newptr; + } + r = read(pWrkrData->fdPipeIn, pWrkrData->respBuf+numCharsRead, + pWrkrData->maxLenRespBuf-numCharsRead-1); + if(r > 0) { + numCharsRead += r; + pWrkrData->respBuf[numCharsRead] = '\0'; /* space reserved in read! */ + } else { + /* emergency - fake no update */ + strcpy(pWrkrData->respBuf, "{}\n"); + numCharsRead = 3; + } + if(Debug && r == -1) { + DBGPRINTF("mmexternal: error reading from external program: %s\n", + rs_strerror_r(errno, errStr, sizeof(errStr))); + } + } while(pWrkrData->respBuf[numCharsRead-1] != '\n'); + + writeOutputDebug(pWrkrData, pWrkrData->respBuf, numCharsRead); + /* strip LF, which is not part of the JSON message but framing */ + pWrkrData->respBuf[numCharsRead-1] = '\0'; + iRet = MsgSetPropsViaJSON(pMsg, (uchar*)pWrkrData->respBuf); + if(iRet != RS_RET_OK) { + LogError(0, iRet, "mmexternal: invalid reply '%s' from program '%s'", + pWrkrData->respBuf, pWrkrData->pData->szBinary); + } + + return; +} + + + +/* execute the child process (must be called in child context + * after fork). + * Note: all output will go to std[err/out] of the **child**, so + * rsyslog will never see it except as script output. Do NOT + * use dbgprintf() or LogError() and friends. + */ +static void __attribute__((noreturn)) +execBinary(wrkrInstanceData_t *pWrkrData, const int fdStdin, const int fdStdOutErr) +{ + int i; + struct sigaction sigAct; + sigset_t set; + char *newenviron[] = { NULL }; + + if(dup2(fdStdin, STDIN_FILENO) == -1) { + perror("mmexternal: dup() stdin failed\n"); + } + if(dup2(fdStdOutErr, STDOUT_FILENO) == -1) { + perror("mmexternal: dup() stdout failed\n"); + } + if(dup2(fdStdOutErr, STDERR_FILENO) == -1) { + perror("mmexternal: dup() stderr failed\n"); + } + + /* we close all file handles as we fork soon + * Is there a better way to do this? - mail me! rgerhards@adiscon.com + */ +# ifndef VALGRIND /* we can not use this with valgrind - too many errors... */ + for(i = 3 ; i <= 65535 ; ++i) + close(i); +# endif + + /* reset signal handlers to default */ + memset(&sigAct, 0, sizeof(sigAct)); + sigemptyset(&sigAct.sa_mask); + sigAct.sa_handler = SIG_DFL; + for(i = 1 ; i < NSIG ; ++i) + sigaction(i, &sigAct, NULL); + /* we need to block SIGINT, otherwise the external program is cancelled when we are + * stopped in debug mode. + */ + sigAct.sa_handler = SIG_IGN; + sigaction(SIGINT, &sigAct, NULL); + sigemptyset(&set); + sigprocmask(SIG_SETMASK, &set, NULL); + + alarm(0); + + /* finally exec child */ + execve((char*)pWrkrData->pData->szBinary, pWrkrData->pData->aParams, newenviron); + + /* we should never reach this point, but if we do, we complain and terminate */ + char errstr[1024]; + char errbuf[2048]; + rs_strerror_r(errno, errstr, sizeof(errstr)); + errstr[sizeof(errstr)-1] = '\0'; + const size_t lenbuf = snprintf(errbuf, sizeof(errbuf), + "mmexternal: failed to execute binary '%s': %s\n", + pWrkrData->pData->szBinary, errstr); + errbuf[sizeof(errbuf)-1] = '\0'; + if(write(2, errbuf, lenbuf) != (ssize_t) lenbuf) { + /* just keep static analyzers happy... */ + exit(2); + } + exit(1); +} + + +/* creates a pipe and starts program, uses pipe as stdin for program. + * rgerhards, 2009-04-01 + */ +static rsRetVal +openPipe(wrkrInstanceData_t *pWrkrData) +{ + int pipestdin[2]; + int pipestdout[2]; + pid_t cpid; + DEFiRet; + + if(pipe(pipestdin) == -1) { + ABORT_FINALIZE(RS_RET_ERR_CREAT_PIPE); + } + if(pipe(pipestdout) == -1) { + ABORT_FINALIZE(RS_RET_ERR_CREAT_PIPE); + } + + DBGPRINTF("mmexternal: executing program '%s' with '%d' parameters\n", + pWrkrData->pData->szBinary, pWrkrData->pData->iParams); + + /* final sanity check */ + assert(pWrkrData->pData->szBinary != NULL); + assert(pWrkrData->pData->aParams != NULL); + + /* NO OUTPUT AFTER FORK! */ + cpid = fork(); + if(cpid == -1) { + ABORT_FINALIZE(RS_RET_ERR_FORK); + } + pWrkrData->pid = cpid; + + if(cpid == 0) { + /* we are now the child, just exec the binary. */ + close(pipestdin[1]); /* close those pipe "ports" that */ + close(pipestdout[0]); /* we don't need */ + execBinary(pWrkrData, pipestdin[0], pipestdout[1]); + /*NO CODE HERE - WILL NEVER BE REACHED!*/ + } + + DBGPRINTF("mmexternal: child has pid %d\n", (int) cpid); + pWrkrData->fdPipeIn = dup(pipestdout[0]); + close(pipestdin[0]); + close(pipestdout[1]); + pWrkrData->pid = cpid; + pWrkrData->fdPipeOut = pipestdin[1]; + pWrkrData->bIsRunning = 1; +finalize_it: + RETiRet; +} + + +/* clean up after a terminated child + */ +static rsRetVal +cleanup(wrkrInstanceData_t *pWrkrData) +{ + int status; + int ret; + DEFiRet; + + assert(pWrkrData->bIsRunning == 1); + ret = waitpid(pWrkrData->pid, &status, 0); + + /* waitpid will fail with errno == ECHILD if the child process has already + been reaped by the rsyslogd main loop (see rsyslogd.c) */ + if(ret == pWrkrData->pid) { + glblReportChildProcessExit(runConf, pWrkrData->pData->szBinary, pWrkrData->pid, status); + } + + if(pWrkrData->fdOutput != -1) { + close(pWrkrData->fdOutput); + pWrkrData->fdOutput = -1; + } + if(pWrkrData->fdPipeIn != -1) { + close(pWrkrData->fdPipeIn); + pWrkrData->fdPipeIn = -1; + } + if(pWrkrData->fdPipeOut != -1) { + close(pWrkrData->fdPipeOut); + pWrkrData->fdPipeOut = -1; + } + pWrkrData->bIsRunning = 0; + pWrkrData->bIsRunning = 0; + RETiRet; +} + + +/* try to restart the binary when it has stopped. + */ +static rsRetVal +tryRestart(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + assert(pWrkrData->bIsRunning == 0); + + iRet = openPipe(pWrkrData); + RETiRet; +} + +/* write to pipe + * note that we do not try to run block-free. If the users fears something + * may block (and this not be acceptable), the action should be run on its + * own action queue. + */ +static rsRetVal +callExtProg(wrkrInstanceData_t *__restrict__ const pWrkrData, smsg_t *__restrict__ const pMsg) +{ + int lenWritten; + int lenWrite; + int writeOffset; + int i_iov; + struct iovec iov[2]; + int bFreeInputstr = 1; /* we must only free if it does not point to msg-obj mem! */ + const uchar *inputstr = NULL; /* string to be processed by external program */ + DEFiRet; + + if(pWrkrData->pData->inputProp == INPUT_MSG) { + inputstr = getMSG(pMsg); + lenWrite = getMSGLen(pMsg); + bFreeInputstr = 0; + } else if(pWrkrData->pData->inputProp == INPUT_RAWMSG) { + getRawMsg(pMsg, (uchar**)&inputstr, &lenWrite); + bFreeInputstr = 0; + } else { + inputstr = msgGetJSONMESG(pMsg); + lenWrite = strlen((const char*)inputstr); + } + + writeOffset = 0; + do { + DBGPRINTF("mmexternal: writing to prog (fd %d, offset %d): %s\n", + pWrkrData->fdPipeOut, (int) writeOffset, inputstr); + i_iov = 0; + if(writeOffset < lenWrite) { + iov[0].iov_base = (char*)inputstr+writeOffset; + iov[0].iov_len = lenWrite - writeOffset; + ++i_iov; + } + iov[i_iov].iov_base = (void*)"\n"; + iov[i_iov].iov_len = 1; + lenWritten = writev(pWrkrData->fdPipeOut, iov, i_iov+1); + if(lenWritten == -1) { + switch(errno) { + case EPIPE: + LogMsg(0, RS_RET_ERR_WRITE_PIPE, LOG_WARNING, + "mmexternal: program '%s' (pid %ld) terminated; will be restarted", + pWrkrData->pData->szBinary, (long) pWrkrData->pid); + CHKiRet(cleanup(pWrkrData)); + CHKiRet(tryRestart(pWrkrData)); + writeOffset = 0; + break; + default: + LogError(errno, RS_RET_ERR_WRITE_PIPE, "mmexternal: error sending message to program"); + ABORT_FINALIZE(RS_RET_ERR_WRITE_PIPE); + break; + } + } else { + writeOffset += lenWritten; + } + } while(lenWritten != lenWrite+1); + + processProgramReply(pWrkrData, pMsg); + +finalize_it: + /* we need to free json input strings, only. All others point to memory + * inside the msg object, which is destroyed when the msg is destroyed. + */ + if(bFreeInputstr) { + free((void*)inputstr); + } + RETiRet; +} + + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; + instanceData *pData; +CODESTARTdoAction + pData = pWrkrData->pData; + if(pData->bForceSingleInst) + pthread_mutex_lock(&pData->mut); + if(pWrkrData->bIsRunning == 0) { + openPipe(pWrkrData); + } + + iRet = callExtProg(pWrkrData, pMsg); + + if(iRet != RS_RET_OK) + iRet = RS_RET_SUSPENDED; + if(pData->bForceSingleInst) + pthread_mutex_unlock(&pData->mut); +ENDdoAction + + +static void +setInstParamDefaults(instanceData *pData) +{ + pData->szBinary = NULL; + pData->aParams = NULL; + pData->outputFileName = NULL; + pData->iParams = 0; + pData->bForceSingleInst = 0; +} + + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; + const char *cstr = NULL; +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + CODE_STD_STRING_REQUESTnewActInst(1) + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "binary")) { + CHKiRet(split_binary_parameters(&pData->szBinary, &pData->aParams, &pData->iParams, + pvals[i].val.d.estr)); + } else if(!strcmp(actpblk.descr[i].name, "output")) { + pData->outputFileName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "forcesingleinstance")) { + pData->bForceSingleInst = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "interface.input")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + if(!strcmp(cstr, "msg")) + pData->inputProp = INPUT_MSG; + else if(!strcmp(cstr, "rawmsg")) + pData->inputProp = INPUT_RAWMSG; + else if(!strcmp(cstr, "fulljson")) + pData->inputProp = INPUT_JSON; + else { + LogError(0, RS_RET_INVLD_INTERFACE_INPUT, + "mmexternal: invalid interface.input parameter '%s'", + cstr); + ABORT_FINALIZE(RS_RET_INVLD_INTERFACE_INPUT); + } + } else { + DBGPRINTF("mmexternal: program error, non-handled param '%s'\n", actpblk.descr[i].name); + } + } + + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + DBGPRINTF("mmexternal: bForceSingleInst %d\n", pData->bForceSingleInst); + DBGPRINTF("mmexternal: interface.input '%s', mode %d\n", cstr, pData->inputProp); +CODE_STD_FINALIZERnewActInst + free((void*)cstr); + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit + free(cs.szBinary); + cs.szBinary = NULL; +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_CNFNAME_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +ENDqueryEtryPt + +BEGINmodInit() +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr +CODEmodInit_QueryRegCFSLineHdlr +ENDmodInit diff --git a/plugins/mmfields/Makefile.am b/plugins/mmfields/Makefile.am new file mode 100644 index 0000000..08170d5 --- /dev/null +++ b/plugins/mmfields/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = mmfields.la + +mmfields_la_SOURCES = mmfields.c +mmfields_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +mmfields_la_LDFLAGS = -module -avoid-version +mmfields_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/mmfields/Makefile.in b/plugins/mmfields/Makefile.in new file mode 100644 index 0000000..faf99c3 --- /dev/null +++ b/plugins/mmfields/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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+ * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmfields") + + +DEF_OMOD_STATIC_DATA + +/* config variables */ + +/* define operation modes we have */ +#define SIMPLE_MODE 0 /* just overwrite */ +#define REWRITE_MODE 1 /* rewrite IP address, canoninized */ +typedef struct _instanceData { + char separator; + uchar *jsonRoot; /**< container where to store fields */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "separator", eCmdHdlrGetChar, 0 }, + { "jsonroot", eCmdHdlrString, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->jsonRoot); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->separator = ','; + pData->jsonRoot = NULL; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + DBGPRINTF("newActInst (mmfields)\n"); + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "separator")) { + pData->separator = es_getBufAddr(pvals[i].val.d.estr)[0]; + } else if(!strcmp(actpblk.descr[i].name, "jsonroot")) { + pData->jsonRoot = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("mmfields: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + if(pData->jsonRoot == NULL) { + CHKmalloc(pData->jsonRoot = (uchar*) strdup("!")); + } + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +static rsRetVal +extractField(instanceData *pData, uchar *msgtext, int lenMsg, int *curridx, uchar *fieldbuf) +{ + int i, j; + DEFiRet; + i = *curridx; + j = 0; + while(i < lenMsg && msgtext[i] != pData->separator) { + fieldbuf[j++] = msgtext[i++]; + } + fieldbuf[j] = '\0'; + if(i < lenMsg) + ++i; + *curridx = i; + + RETiRet; +} + + +static rsRetVal +parse_fields(instanceData *pData, smsg_t *pMsg, uchar *msgtext, int lenMsg) +{ + uchar fieldbuf[32*1024]; + uchar fieldname[512]; + struct json_object *json; + struct json_object *jval; + int field; + uchar *buf; + int currIdx = 0; + DEFiRet; + + if(lenMsg < (int) sizeof(fieldbuf)) { + buf = fieldbuf; + } else { + CHKmalloc(buf = malloc(lenMsg+1)); + } + + json = json_object_new_object(); + if(json == NULL) { + ABORT_FINALIZE(RS_RET_ERR); + } + field = 1; + while(currIdx < lenMsg) { + CHKiRet(extractField(pData, msgtext, lenMsg, &currIdx, buf)); + DBGPRINTF("mmfields: field %d: '%s'\n", field, buf); + snprintf((char*)fieldname, sizeof(fieldname), "f%d", field); + fieldname[sizeof(fieldname)-1] = '\0'; + jval = json_object_new_string((char*)buf); + json_object_object_add(json, (char*)fieldname, jval); + field++; + } + msgAddJSON(pMsg, pData->jsonRoot, json, 0, 0); +finalize_it: + if(buf != fieldbuf) + free(buf); + RETiRet; +} + + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; + uchar *msg; + int lenMsg; +CODESTARTdoAction + lenMsg = getMSGLen(pMsg); + msg = getMSG(pMsg); + iRet = parse_fields(pWrkrData->pData, pMsg, msg, lenMsg); +ENDdoAction + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + 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If give, it extracts JSON data + * and populates the EE event structure with it. + * + * NOTE: read comments in module-template.h for details on the calling interface! + * + * File begun on 2012-02-20 by RGerhards + * + * Copyright 2012-2018 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <ctype.h> +#include <json.h> + +#include "rsyslog.h" +#include "conf.h" +#include "syslogd-types.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "cfsysline.h" +#include "parserif.h" +#include "dirty.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmjsonparse") + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + +/* static data */ + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +typedef struct _instanceData { + sbool bUseRawMsg; /**< use %rawmsg% instead of %msg% */ + char *cookie; + uchar *container; + int lenCookie; + /* REMOVE dummy when real data items are to be added! */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + struct json_tokener *tokener; +} wrkrInstanceData_t; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "cookie", eCmdHdlrString, 0 }, + { "container", eCmdHdlrString, 0 }, + { "userawmsg", eCmdHdlrBinary, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateInstance +CODESTARTcreateInstance + CHKmalloc(pData->container = (uchar*)strdup("!")); + CHKmalloc(pData->cookie = strdup(CONST_CEE_COOKIE)); + pData->lenCookie = CONST_LEN_CEE_COOKIE; +finalize_it: +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pWrkrData->tokener = json_tokener_new(); + if(pWrkrData->tokener == NULL) { + LogError(0, RS_RET_ERR, "error: could not create json " + "tokener, cannot activate instance"); + ABORT_FINALIZE(RS_RET_ERR); + } +finalize_it: +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->cookie); + free(pData->container); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + if(pWrkrData->tokener != NULL) + json_tokener_free(pWrkrData->tokener); +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + DBGPRINTF("mmjsonparse\n"); +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +static rsRetVal +processJSON(wrkrInstanceData_t *pWrkrData, smsg_t *pMsg, char *buf, size_t lenBuf) +{ + struct json_object *json; + const char *errMsg; + DEFiRet; + + assert(pWrkrData->tokener != NULL); + DBGPRINTF("mmjsonparse: toParse: '%s'\n", buf); + json_tokener_reset(pWrkrData->tokener); + + json = json_tokener_parse_ex(pWrkrData->tokener, buf, lenBuf); + if(Debug) { + errMsg = NULL; + if(json == NULL) { + enum json_tokener_error err; + + err = pWrkrData->tokener->err; + if(err != json_tokener_continue) + errMsg = json_tokener_error_desc(err); + else + errMsg = "Unterminated input"; + } else if((size_t)pWrkrData->tokener->char_offset < lenBuf) + errMsg = "Extra characters after JSON object"; + else if(!json_object_is_type(json, json_type_object)) + errMsg = "JSON value is not an object"; + if(errMsg != NULL) { + DBGPRINTF("mmjsonparse: Error parsing JSON '%s': %s\n", + buf, errMsg); + } + } + if(json == NULL + || ((size_t)pWrkrData->tokener->char_offset < lenBuf) + || (!json_object_is_type(json, json_type_object))) { + if(json != NULL) { + /* Release json object as we are not going to add it to pMsg */ + json_object_put(json); + } + ABORT_FINALIZE(RS_RET_NO_CEE_MSG); + } + + msgAddJSON(pMsg, pWrkrData->pData->container, json, 0, 0); +finalize_it: + RETiRet; +} + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; + uchar *buf; + rs_size_t len; + int bSuccess = 0; + struct json_object *jval; + struct json_object *json; + instanceData *pData; +CODESTARTdoAction + pData = pWrkrData->pData; + /* note that we can performance-optimize the interface, but this also + * requires changes to the libraries. For now, we accept message + * duplication. -- rgerhards, 2010-12-01 + */ + if(pWrkrData->pData->bUseRawMsg) + getRawMsg(pMsg, &buf, &len); + else + buf = getMSG(pMsg); + + while(*buf && isspace(*buf)) { + ++buf; + } + + if(*buf == '\0' || strncmp((char*)buf, pData->cookie, pData->lenCookie)) { + DBGPRINTF("mmjsonparse: no JSON cookie: '%s'\n", buf); + ABORT_FINALIZE(RS_RET_NO_CEE_MSG); + } + buf += pData->lenCookie; + CHKiRet(processJSON(pWrkrData, pMsg, (char*) buf, strlen((char*)buf))); + bSuccess = 1; +finalize_it: + if(iRet == RS_RET_NO_CEE_MSG) { + /* add buf as msg */ + json = json_object_new_object(); + jval = json_object_new_string((char*)buf); + json_object_object_add(json, "msg", jval); + msgAddJSON(pMsg, pData->container, json, 0, 0); + iRet = RS_RET_OK; + } + MsgSetParseSuccess(pMsg, bSuccess); +ENDdoAction + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->bUseRawMsg = 0; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + DBGPRINTF("newActInst (mmjsonparse)\n"); + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "cookie")) { + free(pData->cookie); + pData->cookie = es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "container")) { + free(pData->container); + size_t lenvar = es_strlen(pvals[i].val.d.estr); + pData->container = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + if(pData->container[0] == '$') { + /* pre 8.35, the container name needed to be specified without + * the leading $. This was confusing, so we now require a full + * variable name. Nevertheless, we still need to support the + * version without $. -- rgerhards, 2018-05-16 + */ + /* copy lenvar size because of \0 string terminator */ + memmove(pData->container, pData->container+1, lenvar); + --lenvar; + } + if( (lenvar == 0) + || ( !( pData->container[0] == '!' + || pData->container[0] == '.' + || pData->container[0] == '/' ) ) + ) { + parser_errmsg("mmjsonparse: invalid container name '%s', name must " + "start with either '$!', '$.', or '$/'", pData->container); + ABORT_FINALIZE(RS_RET_INVALID_VAR); + } + } else if(!strcmp(actpblk.descr[i].name, "userawmsg")) { + pData->bUseRawMsg = (int) pvals[i].val.d.n; + } else { + dbgprintf("mmjsonparse: program error, non-handled param '%s'\n", actpblk.descr[i].name); + } + } + + if(pData->container == NULL) + CHKmalloc(pData->container = (uchar*) strdup("!")); + pData->lenCookie = strlen(pData->cookie); +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + +BEGINparseSelectorAct +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* first check if this config line is actually for us */ + if(strncmp((char*) p, ":mmjsonparse:", sizeof(":mmjsonparse:") - 1)) { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + p += sizeof(":mmjsonparse:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + CHKiRet(createInstance(&pData)); + + /* check if a non-standard template is to be applied */ + if(*(p-1) == ';') + --p; + /* we call the function below because we need to call it via our interface definition. However, + * the format specified (if any) is always ignored. + */ + iRet = cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_TPL_AS_MSG, (uchar*) "RSYSLOG_FileFormat"); +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + + +/* Reset config variables for this module to default values. + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + RETiRet; +} + + +BEGINmodInit() + rsRetVal localRet; + rsRetVal (*pomsrGetSupportedTplOpts)(unsigned long *pOpts); + unsigned long opts; + int bMsgPassingSupported; +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; + /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + DBGPRINTF("mmjsonparse: module compiled with rsyslog version %s.\n", VERSION); + /* check if the rsyslog core supports parameter passing code */ + bMsgPassingSupported = 0; + localRet = pHostQueryEtryPt((uchar*)"OMSRgetSupportedTplOpts", + &pomsrGetSupportedTplOpts); + if(localRet == RS_RET_OK) { + /* found entry point, so let's see if core supports msg passing */ + CHKiRet((*pomsrGetSupportedTplOpts)(&opts)); + if(opts & OMSR_TPL_AS_MSG) + bMsgPassingSupported = 1; + } else if(localRet != RS_RET_ENTRY_POINT_NOT_FOUND) { + ABORT_FINALIZE(localRet); /* Something else went wrong, not acceptable */ + } + + if(!bMsgPassingSupported) { + DBGPRINTF("mmjsonparse: msg-passing is not supported by rsyslog core, " + "can not continue.\n"); + ABORT_FINALIZE(RS_RET_NO_MSG_PASSING); + } + + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit + +/* vi:set ai: + */ diff --git a/plugins/mmnormalize/Makefile.am b/plugins/mmnormalize/Makefile.am new file mode 100644 index 0000000..6376248 --- /dev/null +++ b/plugins/mmnormalize/Makefile.am @@ -0,0 +1,14 @@ +pkglib_LTLIBRARIES = mmnormalize.la + +if OS_AIX +LIBMATH=-lm +else +LIBMATH= +endif + +mmnormalize_la_SOURCES = mmnormalize.c +mmnormalize_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) $(LIBLOGNORM_CFLAGS) +mmnormalize_la_LDFLAGS = -module -avoid-version $(LIBLOGNORM_LIBS) $(LIBMATH) +mmnormalize_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/mmnormalize/Makefile.in b/plugins/mmnormalize/Makefile.in new file mode 100644 index 0000000..aa0da14 --- /dev/null +++ b/plugins/mmnormalize/Makefile.in @@ -0,0 +1,800 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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+install-dvi-am: + +install-exec-am: install-pkglibLTLIBRARIES + +install-html: install-html-am + +install-html-am: + +install-info: install-info-am + +install-info-am: + +install-man: + +install-pdf: install-pdf-am + +install-pdf-am: + +install-ps: install-ps-am + +install-ps-am: + +installcheck-am: + +maintainer-clean: maintainer-clean-am + -rm -f ./$(DEPDIR)/mmnormalize_la-mmnormalize.Plo + -rm -f Makefile +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-pkglibLTLIBRARIES + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \ + clean-generic clean-libtool clean-pkglibLTLIBRARIES \ + cscopelist-am ctags ctags-am distclean distclean-compile \ + distclean-generic distclean-libtool distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/mmnormalize/mmnormalize.c b/plugins/mmnormalize/mmnormalize.c new file mode 100644 index 0000000..db69ebb --- /dev/null +++ b/plugins/mmnormalize/mmnormalize.c @@ -0,0 +1,551 @@ +/* mmnormalize.c + * This is a message modification module. It normalizes the input message with + * the help of liblognorm. The message's JSON variables are updated. + * + * NOTE: read comments in module-template.h for details on the calling interface! + * + * File begun on 2010-01-01 by RGerhards + * + * Copyright 2010-2015 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Rsyslog is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Rsyslog is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Rsyslog. If not, see <http://www.gnu.org/licenses/>. + * + * A copy of the GPL can be found in the file "COPYING" in this distribution. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <libestr.h> +#include <json.h> +#include <liblognorm.h> +#include "conf.h" +#include "syslogd-types.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "cfsysline.h" +#include "dirty.h" +#include "unicode-helper.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmnormalize") + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + +/* static data */ + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +static struct cnfparamdescr modpdescr[] = { + { "allowregex", eCmdHdlrBinary, 0 } +}; + +static struct cnfparamblk modpblk = { + CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr +}; + +typedef struct _instanceData { + sbool bUseRawMsg; /**< use %rawmsg% instead of %msg% */ + uchar *rule; /* rule to use */ + uchar *rulebase; /**< name of rulebase to use */ + ln_ctx ctxln; /**< context to be used for liblognorm */ + char *pszPath; /**< path of normalized data */ + msgPropDescr_t *varDescr;/**< name of variable to use */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +typedef struct configSettings_s { + uchar *rulebase; /**< name of normalization rulebase to use */ + uchar *rule; + int bUseRawMsg; /**< use %rawmsg% instead of %msg% */ +} configSettings_t; +static configSettings_t cs; + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "rulebase", eCmdHdlrGetWord, 0 }, + { "rule", eCmdHdlrArray, 0 }, + { "path", eCmdHdlrGetWord, 0 }, + { "userawmsg", eCmdHdlrBinary, 0 }, + { "variable", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + int allow_regex; +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + +/* callback for liblognorm error messages */ +static void +errCallBack(void __attribute__((unused)) *cookie, const char *msg, + size_t __attribute__((unused)) lenMsg) +{ + LogError(0, RS_RET_ERR_LIBLOGNORM, "liblognorm error: %s", msg); +} + +/* to be called to build the liblognorm part of the instance ONCE ALL PARAMETERS ARE CORRECT + * (and set within pData!). + */ +static rsRetVal +buildInstance(instanceData *pData) +{ + DEFiRet; + if((pData->ctxln = ln_initCtx()) == NULL) { + LogError(0, RS_RET_ERR_LIBLOGNORM_INIT, "error: could not initialize " + "liblognorm ctx, cannot activate action"); + ABORT_FINALIZE(RS_RET_ERR_LIBLOGNORM_INIT); + } + ln_setCtxOpts(pData->ctxln, loadModConf->allow_regex); + ln_setErrMsgCB(pData->ctxln, errCallBack, NULL); + if(pData->rule !=NULL && pData->rulebase == NULL) { + if(ln_loadSamplesFromString(pData->ctxln, (char*) pData->rule) !=0) { + LogError(0, RS_RET_NO_RULEBASE, "error: normalization rule '%s' " + "could not be loaded cannot activate action", pData->rule); + ln_exitCtx(pData->ctxln); + ABORT_FINALIZE(RS_RET_ERR_LIBLOGNORM_SAMPDB_LOAD); + } + free(pData->rule); + pData->rule = NULL; + } else if(pData->rule ==NULL && pData->rulebase != NULL) { + if(ln_loadSamples(pData->ctxln, (char*) pData->rulebase) != 0) { + LogError(0, RS_RET_NO_RULEBASE, "error: normalization rulebase '%s' " + "could not be loaded cannot activate action", pData->rulebase); + ln_exitCtx(pData->ctxln); + ABORT_FINALIZE(RS_RET_ERR_LIBLOGNORM_SAMPDB_LOAD); + } + } +finalize_it: + RETiRet; +} + + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + resetConfigVariables(NULL, NULL); +ENDinitConfVars + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad + loadModConf = NULL; /* done loading */ + /* free legacy config vars */ + free(cs.rulebase); + free(cs.rule); + cs.rulebase = NULL; + cs.rule = NULL; +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->rulebase); + free(pData->rule); + ln_exitCtx(pData->ctxln); + free(pData->pszPath); + msgPropDescrDestruct(pData->varDescr); + free(pData->varDescr); +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + dbgprintf("mmnormalize\n"); + dbgprintf("\tvariable='%s'\n", pData->varDescr->name); + dbgprintf("\trulebase='%s'\n", pData->rulebase); + dbgprintf("\trule='%s'\n", pData->rule); + dbgprintf("\tpath='%s'\n", pData->pszPath); + dbgprintf("\tbUseRawMsg='%d'\n", pData->bUseRawMsg); +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; + uchar *buf; + rs_size_t len; + int r; + struct json_object *json = NULL; + unsigned short freeBuf = 0; +CODESTARTdoAction + if(pWrkrData->pData->bUseRawMsg) { + getRawMsg(pMsg, &buf, &len); + } else if (pWrkrData->pData->varDescr) { + buf = MsgGetProp(pMsg, NULL, pWrkrData->pData->varDescr, &len, &freeBuf, NULL); + } else { + buf = getMSG(pMsg); + len = getMSGLen(pMsg); + } + r = ln_normalize(pWrkrData->pData->ctxln, (char*)buf, len, &json); + if (freeBuf) { + free(buf); + buf = NULL; + } + if(r != 0) { + DBGPRINTF("error %d during ln_normalize\n", r); + MsgSetParseSuccess(pMsg, 0); + } else { + MsgSetParseSuccess(pMsg, 1); + } + + msgAddJSON(pMsg, (uchar*)pWrkrData->pData->pszPath + 1, json, 0, 0); + +ENDdoAction + + +static void +setInstParamDefaults(instanceData *pData) +{ + pData->rulebase = NULL; + pData->rule = NULL; + pData->bUseRawMsg = 0; + pData->pszPath = strdup("$!"); + pData->varDescr = NULL; +} + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "mmnormalize: error processing module " + "config parameters missing [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for mmnormalize:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "allowregex")) { + loadModConf->allow_regex = (int) pvals[i].val.d.n; + } else { + dbgprintf("mmnormalize: program error, non-handled " + "param '%s' in setModCnf\n", modpblk.descr[i].name); + } + } + +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; + int bDestructPValsOnExit; + char *cstr; + char *varName = NULL; + char *buffer; + char *tStr; + int size = 0; +CODESTARTnewActInst + DBGPRINTF("newActInst (mmnormalize)\n"); + + bDestructPValsOnExit = 0; + pvals = nvlstGetParams(lst, &actpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "mmnormalize: error reading " + "config parameters"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + bDestructPValsOnExit = 1; + + if(Debug) { + dbgprintf("action param blk in mmnormalize:\n"); + cnfparamsPrint(&actpblk, pvals); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "rulebase")) { + pData->rulebase = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "rule")) { + for(int j=0; j < pvals[i].val.d.ar->nmemb; ++j) { + tStr = (char*)es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + size += strlen(tStr); + free(tStr); + } + buffer = malloc(size + pvals[i].val.d.ar->nmemb + 1); + tStr = (char*)es_str2cstr(pvals[i].val.d.ar->arr[0], NULL); + strcpy(buffer, tStr); + free(tStr); + strcat(buffer, "\n"); + for(int j=1; j < pvals[i].val.d.ar->nmemb; ++j) { + tStr = (char*)es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + strcat(buffer, tStr); + free(tStr); + strcat(buffer, "\n"); + } + strcat(buffer, "\0"); + pData->rule = (uchar*)buffer; + } else if(!strcmp(actpblk.descr[i].name, "userawmsg")) { + pData->bUseRawMsg = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "variable")) { + varName = es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "path")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + if (strlen(cstr) < 2) { + LogError(0, RS_RET_VALUE_NOT_SUPPORTED, + "mmnormalize: valid path name should be at least " + "2 symbols long, got %s", cstr); + free(cstr); + } else if (cstr[0] != '$') { + LogError(0, RS_RET_VALUE_NOT_SUPPORTED, + "mmnormalize: valid path name should start with $," + "got %s", cstr); + free(cstr); + } else { + free(pData->pszPath); + pData->pszPath = cstr; + } + continue; + } else { + DBGPRINTF("mmnormalize: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + if (varName) { + if(pData->bUseRawMsg) { + LogError(0, RS_RET_CONFIG_ERROR, + "mmnormalize: 'variable' param can't be used with 'useRawMsg'. " + "Ignoring 'variable', will use raw message."); + } else { + CHKmalloc(pData->varDescr = malloc(sizeof(msgPropDescr_t))); + CHKiRet(msgPropDescrFill(pData->varDescr, (uchar*) varName, strlen(varName))); + } + free(varName); + varName = NULL; + } + if(!pData->rulebase) { + if(!pData->rule) { + LogError(0, RS_RET_CONFIG_ERROR, "mmnormalize: rulebase needed. " + "Use option rulebase or rule."); + } + } + if(pData->rulebase) { + if(pData->rule) { + LogError(0, RS_RET_CONFIG_ERROR, + "mmnormalize: only one rulebase possible, rulebase " + "can't be used with rule"); + } + } + + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + iRet = buildInstance(pData); +CODE_STD_FINALIZERnewActInst + if(bDestructPValsOnExit) + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINparseSelectorAct +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* first check if this config line is actually for us */ + if(strncmp((char*) p, ":mmnormalize:", sizeof(":mmnormalize:") - 1)) { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + if(cs.rulebase == NULL && cs.rule == NULL) { + LogError(0, RS_RET_NO_RULEBASE, "error: no normalization rulebase was specified, use " + "$MMNormalizeSampleDB directive first!"); + ABORT_FINALIZE(RS_RET_NO_RULEBASE); + } + + /* ok, if we reach this point, we have something for us */ + p += sizeof(":mmnormalize:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + CHKiRet(createInstance(&pData)); + + pData->rulebase = cs.rulebase; + pData->rule = cs.rule; + pData->bUseRawMsg = cs.bUseRawMsg; + pData->pszPath = strdup("$!"); /* old interface does not support this feature */ + /* all config vars auto-reset! */ + cs.bUseRawMsg = 0; + cs.rulebase = NULL; /* we used it up! */ + cs.rule = NULL; + + /* check if a non-standard template is to be applied */ + if(*(p-1) == ';') + --p; + /* we call the function below because we need to call it via our interface definition. However, + * the format specified (if any) is always ignored. + */ + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_TPL_AS_MSG, (uchar*) "RSYSLOG_FileFormat")); + CHKiRet(buildInstance(pData)); +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +ENDqueryEtryPt + + + +/* Reset config variables for this module to default values. + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + cs.rulebase = NULL; + cs.rule = NULL; + cs.bUseRawMsg = 0; + RETiRet; +} + +/* set the rulebase name */ +static rsRetVal +setRuleBase(void __attribute__((unused)) *pVal, uchar *pszName) +{ + DEFiRet; + cs.rulebase = pszName; + pszName = NULL; + RETiRet; +} + +BEGINmodInit() + rsRetVal localRet; + rsRetVal (*pomsrGetSupportedTplOpts)(unsigned long *pOpts); + unsigned long opts; + int bMsgPassingSupported; +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; + /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + DBGPRINTF("mmnormalize: module compiled with rsyslog version %s.\n", VERSION); + /* check if the rsyslog core supports parameter passing code */ + bMsgPassingSupported = 0; + localRet = pHostQueryEtryPt((uchar*)"OMSRgetSupportedTplOpts", + &pomsrGetSupportedTplOpts); + if(localRet == RS_RET_OK) { + /* found entry point, so let's see if core supports msg passing */ + CHKiRet((*pomsrGetSupportedTplOpts)(&opts)); + if(opts & OMSR_TPL_AS_MSG) + bMsgPassingSupported = 1; + } else if(localRet != RS_RET_ENTRY_POINT_NOT_FOUND) { + ABORT_FINALIZE(localRet); /* Something else went wrong, not acceptable */ + } + + if(!bMsgPassingSupported) { + DBGPRINTF("mmnormalize: msg-passing is not supported by rsyslog core, " + "can not continue.\n"); + ABORT_FINALIZE(RS_RET_NO_MSG_PASSING); + } + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"mmnormalizerulebase", 0, eCmdHdlrGetWord, + setRuleBase, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"mmnormalizerule", 0, eCmdHdlrGetWord, NULL, + NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"mmnormalizeuserawmsg", 0, eCmdHdlrBinary, + NULL, &cs.bUseRawMsg, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit + +/* vi:set ai: + */ diff --git a/plugins/mmpstrucdata/Makefile.am b/plugins/mmpstrucdata/Makefile.am new file mode 100644 index 0000000..090150a --- /dev/null +++ b/plugins/mmpstrucdata/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = mmpstrucdata.la + +mmpstrucdata_la_SOURCES = mmpstrucdata.c +mmpstrucdata_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +mmpstrucdata_la_LDFLAGS = -module -avoid-version +mmpstrucdata_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/mmpstrucdata/Makefile.in b/plugins/mmpstrucdata/Makefile.in new file mode 100644 index 0000000..85341e2 --- /dev/null +++ b/plugins/mmpstrucdata/Makefile.in @@ -0,0 +1,798 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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* JSON tree. + * + * Copyright 2013-2018 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include <ctype.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmpstrucdata") + + +DEF_OMOD_STATIC_DATA + +/* config variables */ + +typedef struct _instanceData { + uchar *jsonRoot; /**< container where to store fields */ + int lowercase_SD_ID; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "jsonroot", eCmdHdlrString, 0 }, + { "sd_name.lowercase", eCmdHdlrBinary, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->jsonRoot); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->jsonRoot = NULL; + pData->lowercase_SD_ID = 1; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + DBGPRINTF("newActInst (mmpstrucdata)\n"); + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "jsonroot")) { + size_t lenvar = es_strlen(pvals[i].val.d.estr); + pData->jsonRoot = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + if(pData->jsonRoot[0] == '$') { + /* pre 8.35, the jsonRoot name needed to be specified without + * the leading $. This was confusing, so we now require a full + * variable name. Nevertheless, we still need to support the + * version without $. -- rgerhards, 2018-05-16 + */ + /* copy lenvar size because of \0 string terminator */ + memmove(pData->jsonRoot, pData->jsonRoot+1, lenvar); + --lenvar; + } + if( (lenvar == 0) + || ( !( pData->jsonRoot[0] == '!' + || pData->jsonRoot[0] == '.' + || pData->jsonRoot[0] == '/' ) ) + ) { + parser_errmsg("mmpstrucdata: invalid jsonRoot name '%s', name must " + "start with either '$!', '$.', or '$/'", pData->jsonRoot); + ABORT_FINALIZE(RS_RET_INVALID_VAR); + } + } else if(!strcmp(actpblk.descr[i].name, "sd_name.lowercase")) { + pData->lowercase_SD_ID = pvals[i].val.d.n; + } else { + LogError(0, RS_RET_INTERNAL_ERROR, + "mmpstrucdata: internal program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + if(pData->jsonRoot == NULL) { + CHKmalloc(pData->jsonRoot = (uchar*) strdup("!")); + } + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +static rsRetVal +parsePARAM_VALUE(uchar *sdbuf, int lenbuf, int *curridx, uchar *fieldbuf) +{ + int i, j; + DEFiRet; + i = *curridx; + j = 0; + while(i < lenbuf && sdbuf[i] != '"') { + if(sdbuf[i] == '\\') { + if(++i == lenbuf) { + fieldbuf[j++] = '\\'; + } else { + if(sdbuf[i] == '"') { + fieldbuf[j++] = '"'; + } else if(sdbuf[i] == '\\') { + fieldbuf[j++] = '\\'; + } else if(sdbuf[i] == ']') { + fieldbuf[j++] = ']'; + } else { + fieldbuf[j++] = '\\'; + fieldbuf[j++] = sdbuf[i]; + } + ++i; + } + } else { + fieldbuf[j++] = sdbuf[i++]; + } + } + fieldbuf[j] = '\0'; + *curridx = i; + RETiRet; +} + + +static rsRetVal ATTR_NONNULL() +parseSD_NAME(instanceData *const pData, uchar *sdbuf, int lenbuf, int *curridx, uchar *namebuf) +{ + int i, j; + DEFiRet; + i = *curridx; + for(j = 0 ; i < lenbuf && j < 32; ++j) { + if( sdbuf[i] == '=' || sdbuf[i] == '"' + || sdbuf[i] == ']' || sdbuf[i] == ' ') + break; + namebuf[j] = pData->lowercase_SD_ID ? tolower(sdbuf[i]) : sdbuf[i]; + ++i; + } + namebuf[j] = '\0'; + *curridx = i; + RETiRet; +} + + +static rsRetVal ATTR_NONNULL() +parseSD_PARAM(instanceData *const pData, uchar *sdbuf, int lenbuf, int *curridx, struct json_object *jroot) +{ + int i; + uchar pName[33]; + uchar pVal[32*1024]; + struct json_object *jval; + DEFiRet; + + i = *curridx; + CHKiRet(parseSD_NAME(pData, sdbuf, lenbuf, &i, pName)); + if(sdbuf[i] != '=') { + ABORT_FINALIZE(RS_RET_STRUC_DATA_INVLD); + } + ++i; + if(sdbuf[i] != '"') { + ABORT_FINALIZE(RS_RET_STRUC_DATA_INVLD); + } + ++i; + CHKiRet(parsePARAM_VALUE(sdbuf, lenbuf, &i, pVal)); + if(sdbuf[i] != '"') { + ABORT_FINALIZE(RS_RET_STRUC_DATA_INVLD); + } + ++i; + + jval = json_object_new_string((char*)pVal); + json_object_object_add(jroot, (char*)pName, jval); + + *curridx = i; +finalize_it: + RETiRet; +} + + +static rsRetVal ATTR_NONNULL() +parseSD_ELEMENT(instanceData *const pData, uchar *sdbuf, int lenbuf, int *curridx, struct json_object *jroot) +{ + int i; + uchar sd_id[33]; + struct json_object *json = NULL; + DEFiRet; + + i = *curridx; + if(sdbuf[i] != '[') { + ABORT_FINALIZE(RS_RET_STRUC_DATA_INVLD); + } + ++i; /* eat '[' */ + + CHKiRet(parseSD_NAME(pData, sdbuf, lenbuf, &i, sd_id)); + json = json_object_new_object(); + + while(i < lenbuf) { + if(sdbuf[i] == ']') { + break; + } else if(sdbuf[i] != ' ') { + ABORT_FINALIZE(RS_RET_STRUC_DATA_INVLD); + } + ++i; + while(i < lenbuf && sdbuf[i] == ' ') + ++i; + CHKiRet(parseSD_PARAM(pData, sdbuf, lenbuf, &i, json)); + } + + if(sdbuf[i] != ']') { + DBGPRINTF("mmpstrucdata: SD-ELEMENT does not terminate with " + "']': '%s'\n", sdbuf+i); + ABORT_FINALIZE(RS_RET_STRUC_DATA_INVLD); + } + ++i; /* eat ']' */ + *curridx = i; + json_object_object_add(jroot, (char*)sd_id, json); +finalize_it: + if(iRet != RS_RET_OK && json != NULL) + json_object_put(json); + RETiRet; +} + +static rsRetVal ATTR_NONNULL() +parse_sd(instanceData *const pData, smsg_t *const pMsg) +{ + struct json_object *json, *jroot; + uchar *sdbuf; + int lenbuf; + int i = 0; + DEFiRet; + + json = json_object_new_object(); + if(json == NULL) { + ABORT_FINALIZE(RS_RET_ERR); + } + MsgGetStructuredData(pMsg, &sdbuf,&lenbuf); + while(i < lenbuf) { + CHKiRet(parseSD_ELEMENT(pData, sdbuf, lenbuf, &i, json)); + } + + jroot = json_object_new_object(); + if(jroot == NULL) { + ABORT_FINALIZE(RS_RET_ERR); + } + json_object_object_add(jroot, "rfc5424-sd", json); + msgAddJSON(pMsg, pData->jsonRoot, jroot, 0, 0); +finalize_it: + if(iRet != RS_RET_OK && json != NULL) + json_object_put(json); + RETiRet; +} + + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; +CODESTARTdoAction + DBGPRINTF("mmpstrucdata: enter\n"); + if(!MsgHasStructuredData(pMsg)) { + DBGPRINTF("mmpstrucdata: message does not have structured data\n"); + FINALIZE; + } + /* don't check return code - we never want rsyslog to retry + * or suspend this action! + */ + parse_sd(pWrkrData->pData, pMsg); +finalize_it: +ENDdoAction + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +NO_LEGACY_CONF_parseSelectorAct +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + DBGPRINTF("mmpstrucdata: module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git a/plugins/mmrm1stspace/Makefile.am b/plugins/mmrm1stspace/Makefile.am new file mode 100644 index 0000000..47bf462 --- /dev/null +++ b/plugins/mmrm1stspace/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = mmrm1stspace.la + +mmrm1stspace_la_SOURCES = mmrm1stspace.c +mmrm1stspace_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +mmrm1stspace_la_LDFLAGS = -module -avoid-version +mmrm1stspace_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/mmrm1stspace/Makefile.in b/plugins/mmrm1stspace/Makefile.in new file mode 100644 index 0000000..1d6c8b9 --- /dev/null +++ b/plugins/mmrm1stspace/Makefile.in @@ -0,0 +1,798 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/mmrm1stspace/mmrm1stspace.c b/plugins/mmrm1stspace/mmrm1stspace.c new file mode 100644 index 0000000..b40d111 --- /dev/null +++ b/plugins/mmrm1stspace/mmrm1stspace.c @@ -0,0 +1,178 @@ +/* mmrm1stspace.c + * removes leading space inside the syslog message part + * + * Copyright 2016 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmrm1stspace") + + +DEF_OMOD_STATIC_DATA + +/* config variables */ + +/* define operation modes we have */ +typedef struct _instanceData { + int dummy; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + + +BEGINfreeInstance +CODESTARTfreeInstance +ENDfreeInstance + +BEGINnewActInst +CODESTARTnewActInst + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + CHKiRet(createInstance(&pData)); +CODE_STD_FINALIZERnewActInst +ENDnewActInst + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; + uchar *msg; + int lenMsg; + int i; +CODESTARTdoAction + lenMsg = getMSGLen(pMsg); + if(lenMsg > 0) { + msg = getMSG(pMsg); + if(msg[0]==' ') { + for(i = 1; i < lenMsg; i++) { + msg[i-1] = msg[i]; + } + msg[i-1] = '\0'; + lenMsg -= 1; + } + } + if(lenMsg != getMSGLen(pMsg)) + setMSGLen(pMsg, lenMsg); +ENDdoAction + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +NO_LEGACY_CONF_parseSelectorAct + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +ENDqueryEtryPt + + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + DBGPRINTF("mmrm1stspace: module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git a/plugins/mmsnmptrapd/Makefile.am b/plugins/mmsnmptrapd/Makefile.am new file mode 100644 index 0000000..ca027ca --- /dev/null +++ b/plugins/mmsnmptrapd/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = mmsnmptrapd.la + +mmsnmptrapd_la_SOURCES = mmsnmptrapd.c 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It takes messages generated + * from snmptrapd and modifies them so that the look like they + * originated from the real originator. + * + * NOTE: read comments in module-template.h for details on the calling interface! + * + * File begun on 2011-05-05 by RGerhards + * + * Copyright 2011-2017 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Rsyslog is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Rsyslog is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Rsyslog. If not, see <http://www.gnu.org/licenses/>. + * + * A copy of the GPL can be found in the file "COPYING" in this distribution. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <ctype.h> +#include "conf.h" +#include "msg.h" +#include "syslogd-types.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "cfsysline.h" +#include "unicode-helper.h" +#include "dirty.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmsnmptrapd") + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + +/* static data */ + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +struct severMap_s { + uchar *name; + int code; + struct severMap_s *next; +}; + +typedef struct _instanceData { + uchar *pszTagName; + uchar *pszTagID; /* cached: name plus trailing shlash (for compares) */ + int lenTagID; /* cached: length of tag ID, for performance reasons */ + struct severMap_s *severMap; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +typedef struct configSettings_s { + uchar *pszTagName; /**< name of tag start value that indicates snmptrapd initiated message */ + uchar *pszSeverityMapping; /**< severitystring to numerical code mapping for snmptrapd string */ +} configSettings_t; +static configSettings_t cs; + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + cs.pszTagName = NULL; + cs.pszSeverityMapping = NULL; + resetConfigVariables(NULL, NULL); +ENDinitConfVars + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance + struct severMap_s *node, *nodeDel; +CODESTARTfreeInstance + for(node = pData->severMap ; node != NULL ; ) { + nodeDel = node; + node = node->next; + free(nodeDel->name); + free(nodeDel); + } + free(pData->pszTagName); + free(pData->pszTagID); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + dbgprintf("mmsnmptrapd\n"); +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +/* check if a string is numeric (int) */ +static int +isNumeric(uchar *str) +{ + int r = 1; + if(*str == '-' || *str == '+') + ++str; + while(*str) { + if(!isdigit(*str)) { + r = 0; + goto done; + } + ++str; + } +done: + return r; +} + +/* get a substring delimited by a character (or end of string). The + * string is trimmed, that is leading and trailing spaces are removed. + * The caller must provide a buffer which shall receive the substring. + * String length is returned as result. The input string is updated + * on exit, so that it may be used for another query starting at that + * position. + */ +static int +getSubstring(uchar **psrc, uchar delim, uchar *dst, int lenDst) +{ + uchar *dstwrk = dst; + uchar *src = *psrc; + while(*src && isspace(*src)) { + ++src; /* trim leading spaces */ + } + while(*src && *src != delim && --lenDst > 0) { + *dstwrk++ = *src++; + } + dstwrk--; + while(dstwrk > dst && isspace(*dst)) + --dstwrk; /* trim trailing spaces */ + *++dstwrk = '\0'; + + /* final results */ + if(*src == delim) + ++src; + *psrc = src; + return(dstwrk - dst); +} + + +/* get string up to the next SP or '/'. Stops at max size. + * dst, lenDst (receive buffer) must be given. lenDst is + * max length on entry and actual length on exit. + */ +static int ATTR_NONNULL() +getTagComponent(uchar *tag, uchar *const dst, int *const lenDst) +{ + int end = *lenDst - 1; /* -1 for NUL-char! */ + int i; + + i = 0; + if(tag[i] == '/') { + ++tag; + while(i < end && tag[i] != '\0' && tag[i] != ' ' && tag[i] != '/') { + dst[i] = tag[i]; + ++i; + } + } + dst[i] = '\0'; + *lenDst = i; + return i; +} + + +/* lookup severity code based on provided severity + * returns -1 if severity could not be found. + */ +static int +lookupSeverityCode(instanceData *pData, uchar *sever) +{ + struct severMap_s *node; + int sevCode = -1; + + for(node = pData->severMap ; node != NULL ; node = node->next) { + if(!ustrcmp(node->name, sever)) { + sevCode = node->code; + break; + } + } + return sevCode; +} + + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; + int lenTAG; + int lenSever; + int lenHost; + int sevCode; + uchar *pszTag; + uchar pszSever[512]; + uchar pszHost[512]; + instanceData *pData; +CODESTARTdoAction + pData = pWrkrData->pData; + getTAG(pMsg, &pszTag, &lenTAG, LOCK_MUTEX); + if(strncmp((char*)pszTag, (char*)pData->pszTagID, pData->lenTagID)) { + DBGPRINTF("tag '%s' not matching, mmsnmptrapd ignoring this message\n", + pszTag); + FINALIZE; + } + + lenSever = sizeof(pszSever); + getTagComponent(pszTag+pData->lenTagID-1, pszSever, &lenSever); + lenHost = sizeof(pszHost); + getTagComponent(pszTag+pData->lenTagID+lenSever, pszHost, &lenHost); + DBGPRINTF("mmsnmptrapd: sever '%s'(%d), host '%s'(%d)\n", pszSever, lenSever, pszHost,lenHost); + + if(lenHost > 0 && pszHost[lenHost-1] == ':') { + pszHost[lenHost-1] = '\0'; + --lenHost; + } + sevCode = lookupSeverityCode(pData, pszSever); + /* now apply new settings */ + MsgSetTAG(pMsg, pData->pszTagName, pData->lenTagID); + MsgSetHOSTNAME(pMsg, pszHost, lenHost); + if(sevCode != -1) + pMsg->iSeverity = sevCode; /* we update like the parser does! */ +finalize_it: +ENDdoAction + + +/* Build the severity mapping table based on user-provided configuration + * settings. + */ +static rsRetVal ATTR_NONNULL() +buildSeverityMapping(instanceData *const pData) +{ + uchar pszSev[512]; + uchar pszSevCode[512]; + int sevCode; + uchar *mapping; + struct severMap_s *node = NULL; + DEFiRet; + + mapping = cs.pszSeverityMapping; + + while(1) { /* broken inside when all entries are processed */ + if(getSubstring(&mapping, '/', pszSev, sizeof(pszSev)) == 0) { + FINALIZE; + } + if(getSubstring(&mapping, ',', pszSevCode, sizeof(pszSevCode)) == 0) { + LogError(0, RS_RET_ERR, "error: invalid severity mapping, cannot " + "extract code. given: '%s'\n", cs.pszSeverityMapping); + ABORT_FINALIZE(RS_RET_ERR); + } + sevCode = atoi((char*) pszSevCode); + if(!isNumeric(pszSevCode)) + sevCode = -1; + if(sevCode < 0 || sevCode > 7) { + LogError(0, RS_RET_ERR, "error: severity code %d outside of valid " + "range 0..7 (was string '%s')\n", sevCode, pszSevCode); + ABORT_FINALIZE(RS_RET_ERR); + } + CHKmalloc(node = malloc(sizeof(struct severMap_s))); + CHKmalloc(node->name = ustrdup(pszSev)); + node->code = sevCode; + /* we enqueue at the top, so the two lines below do all we need! */ + node->next = pData->severMap; + pData->severMap = node; + node = NULL; + DBGPRINTF("mmsnmptrapd: severity string '%s' mapped to code %d\n", + pszSev, sevCode); + } + +finalize_it: + if(iRet != RS_RET_OK) { + free(node); + } + RETiRet; +} + + +BEGINparseSelectorAct +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* first check if this config line is actually for us */ + if(strncmp((char*) p, ":mmsnmptrapd:", sizeof(":mmsnmptrapd:") - 1)) { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + p += sizeof(":mmsnmptrapd:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + CHKiRet(createInstance(&pData)); + + /* check if a non-standard template is to be applied */ + if(*(p-1) == ';') + --p; + /* we call the function below because we need to call it via our interface definition. However, + * the format specified (if any) is always ignored. + */ + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_TPL_AS_MSG, (uchar*) "RSYSLOG_FileFormat")); + + /* finally build the instance */ + if(cs.pszTagName == NULL) { + CHKmalloc(pData->pszTagName = (uchar*) strdup("snmptrapd:")); + CHKmalloc(pData->pszTagID = (uchar*) strdup("snmptrapd/")); + } else { + int lenTag = ustrlen(cs.pszTagName); + /* new tag value (with colon at the end) */ + CHKmalloc(pData->pszTagName = malloc(lenTag + 2)); + memcpy(pData->pszTagName, cs.pszTagName, lenTag); + memcpy(pData->pszTagName+lenTag, ":", 2); + /* tag ID for comparisions */ + CHKmalloc(pData->pszTagID = malloc(lenTag + 2)); + memcpy(pData->pszTagID, cs.pszTagName, lenTag); + memcpy(pData->pszTagID+lenTag, "/", 2); + free(cs.pszTagName); /* no longer needed */ + } + pData->lenTagID = ustrlen(pData->pszTagID); + if(cs.pszSeverityMapping != NULL) { + CHKiRet(buildSeverityMapping(pData)); + } + + /* all config vars auto-reset! */ + cs.pszTagName = NULL; + free(cs.pszSeverityMapping); + cs.pszSeverityMapping = NULL; +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_CNFNAME_QUERIES +ENDqueryEtryPt + + + +/* Reset config variables for this module to default values. + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + free(cs.pszTagName); + cs.pszTagName = NULL; + free(cs.pszSeverityMapping); + cs.pszSeverityMapping = NULL; + RETiRet; +} + + +BEGINmodInit() + rsRetVal localRet; + rsRetVal (*pomsrGetSupportedTplOpts)(unsigned long *pOpts); + unsigned long opts; + int bMsgPassingSupported; +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; + /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + /* check if the rsyslog core supports parameter passing code */ + bMsgPassingSupported = 0; + localRet = pHostQueryEtryPt((uchar*)"OMSRgetSupportedTplOpts", + &pomsrGetSupportedTplOpts); + if(localRet == RS_RET_OK) { + /* found entry point, so let's see if core supports msg passing */ + CHKiRet((*pomsrGetSupportedTplOpts)(&opts)); + if(opts & OMSR_TPL_AS_MSG) + bMsgPassingSupported = 1; + } else if(localRet != RS_RET_ENTRY_POINT_NOT_FOUND) { + ABORT_FINALIZE(localRet); /* Something else went wrong, not acceptable */ + } + + if(!bMsgPassingSupported) { + DBGPRINTF("mmsnmptrapd: msg-passing is not supported by rsyslog core, " + "can not continue.\n"); + ABORT_FINALIZE(RS_RET_NO_MSG_PASSING); + } + + + /* TODO: config vars ininit can be replaced by commented-out code above in v6 */ + cs.pszTagName = NULL; + cs.pszSeverityMapping = NULL; + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"mmsnmptrapdtag", 0, eCmdHdlrGetWord, + NULL, &cs.pszTagName, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"mmsnmptrapdseveritymapping", 0, eCmdHdlrGetWord, + NULL, &cs.pszSeverityMapping, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit + +/* vi:set ai: + */ diff --git a/plugins/mmutf8fix/Makefile.am b/plugins/mmutf8fix/Makefile.am new file mode 100644 index 0000000..2c0f283 --- /dev/null +++ b/plugins/mmutf8fix/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = mmutf8fix.la + +mmutf8fix_la_SOURCES = mmutf8fix.c +mmutf8fix_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +mmutf8fix_la_LDFLAGS = -module -avoid-version +mmutf8fix_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/mmutf8fix/Makefile.in b/plugins/mmutf8fix/Makefile.in new file mode 100644 index 0000000..f7de487 --- /dev/null +++ b/plugins/mmutf8fix/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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This is begun as a very simple replacer + * of non-control characters, and actually breaks some UTF-8 encoding + * right now. If the module turns out to be useful, it should be enhanced + * to support modes that really detect invalid UTF8. In the longer term + * it could also be evolved into an any-charset-to-UTF8 converter. But + * first let's see if it really gets into widespread enough use. + * + * Copyright 2013-2016 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("mmutf8fix") + + +DEF_OMOD_STATIC_DATA + +/* define operation modes we have */ +#define MODE_CC 0 /* just fix control characters */ +#define MODE_UTF8 1 /* do real UTF-8 fixing */ + +/* config variables */ +typedef struct _instanceData { + uchar replChar; + uint8_t mode; /* operations mode */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "mode", eCmdHdlrGetWord, 0 }, + { "replacementchar", eCmdHdlrGetChar, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->mode = MODE_UTF8; + pData->replChar = ' '; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + DBGPRINTF("newActInst (mmutf8fix)\n"); + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "mode")) { + if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"utf-8", + sizeof("utf-8")-1)) { + pData->mode = MODE_UTF8; + } else if(!es_strbufcmp(pvals[i].val.d.estr, (uchar*)"controlcharacters", + sizeof("controlcharacters")-1)) { + pData->mode = MODE_CC; + } else { + char *cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + LogError(0, RS_RET_INVLD_MODE, + "mmutf8fix: invalid mode '%s' - ignored", + cstr); + free(cstr); + } + } else if(!strcmp(actpblk.descr[i].name, "replacementchar")) { + pData->replChar = es_getBufAddr(pvals[i].val.d.estr)[0]; + } else { + dbgprintf("mmutf8fix: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +static void +doCC(instanceData *pData, uchar *msg, int lenMsg) +{ + int i; + + for(i = 0 ; i < lenMsg ; ++i) { + if(msg[i] < 32 || msg[i] > 126) { + msg[i] = pData->replChar; + } + } +} + +/* fix an invalid multibyte sequence */ +static void +fixInvldMBSeq(instanceData *pData, uchar *msg, int lenMsg, int strtIdx, int cnt) +{ + int i, endIdx; + + /* Actually strtIdx + cnt will not exceed msgLen, + but this check does bring peace of mind */ + endIdx = strtIdx + cnt; + if(endIdx > lenMsg) + endIdx = lenMsg; + for(i = strtIdx ; i < endIdx ; ++i) + msg[i] = pData->replChar; +} + +static void +doUTF8(instanceData *pData, uchar *msg, int lenMsg) +{ + uchar c; + int8_t bytesLeft = 0; + uint32_t codepoint; + int strtIdx = 0; + int i; + + for(i = 0 ; i < lenMsg ; ++i) { + c = msg[i]; + if(bytesLeft) { + if((c & 0xc0) != 0x80) { + /* invalid continuation byte, invalidate all bytes + up to (but not including) the current byte + startIdx is always set if bytesLeft is set */ + fixInvldMBSeq(pData, msg, lenMsg, strtIdx, i - strtIdx); + bytesLeft = 0; + goto startOfSequence; + } else { + codepoint = (codepoint << 6) | (c & 0x3f); + --bytesLeft; + if(bytesLeft == 0) { + int seqLen = i - strtIdx + 1; + + if ( + /* an overlong encoding? (a codepoint must use only + the minimum number of bytes to represent its value) */ + (((2 == seqLen) && (codepoint < 0x80)) || + ((3 == seqLen) && (codepoint < 0x800)) || + ((4 == seqLen) && (codepoint < 0x10000))) + || + /* UTF-16 surrogates? */ + ((codepoint >= 0xD800) && (codepoint <= 0xDFFF)) + || + /* too-large codepoint? */ + (codepoint > 0x10FFFF) + ) { + /* sequence invalid, invalidate all bytes + startIdx is always set if bytesLeft is set */ + fixInvldMBSeq(pData, msg, lenMsg, strtIdx, seqLen); + } + } + } + } else { +startOfSequence: + if((c & 0x80) == 0) { + /* 1-byte sequence, US-ASCII */ + ; /* nothing to do, all well */ + } else if((c & 0xe0) == 0xc0) { + /* 2-byte sequence */ + strtIdx = i; + bytesLeft = 1; + codepoint = c & 0x1f; + } else if((c & 0xf0) == 0xe0) { + /* 3-byte sequence */ + strtIdx = i; + bytesLeft = 2; + codepoint = c & 0x0f; + } else if((c & 0xf8) == 0xf0) { + /* 4-byte sequence */ + strtIdx = i; + bytesLeft = 3; + codepoint = c & 0x07; + } else { /* invalid, either: + - stray continuation byte (0x80 <= x <= 0xBF) + - 5&6 byte sequence start (x >= 0xF8) forbidden by RFC3629 + */ + msg[i] = pData->replChar; + } + } + } + if (bytesLeft) { + /* invalid, there was not enough bytes to complete a sequence + startIdx is always set if bytesLeft is set */ + fixInvldMBSeq(pData, msg, lenMsg, strtIdx, i - strtIdx); + } +} + +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg = ppMsg[0]; + uchar *msg; + int lenMsg; +CODESTARTdoAction + lenMsg = getMSGLen(pMsg); + msg = getMSG(pMsg); + if(pWrkrData->pData->mode == MODE_CC) { + doCC(pWrkrData->pData, msg, lenMsg); + } else { + doUTF8(pWrkrData->pData, msg, lenMsg); + } +ENDdoAction + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + DBGPRINTF("mmutf8fix: module compiled with rsyslog version %s.\n", VERSION); 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-f ./$(DEPDIR)/omazureeventhubs_la-omazureeventhubs.Plo + -rm -f Makefile +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-pkglibLTLIBRARIES + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \ + clean-generic clean-libtool clean-pkglibLTLIBRARIES \ + cscopelist-am ctags ctags-am distclean distclean-compile \ + distclean-generic distclean-libtool distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omazureeventhubs/omazureeventhubs.c b/plugins/omazureeventhubs/omazureeventhubs.c new file mode 100644 index 0000000..a2bd8b3 --- /dev/null +++ b/plugins/omazureeventhubs/omazureeventhubs.c @@ -0,0 +1,1354 @@ +/* omazureeventhubs.c + * This output plugin make rsyslog talk to Azure EventHubs. + * + * Copyright 2014-2017 by Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> +#include <assert.h> +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <sys/uio.h> +#include <sys/queue.h> +#include <sys/types.h> +#include <math.h> +#ifdef HAVE_SYS_STAT_H +# include <sys/stat.h> +#endif +#include <sys/time.h> +#include <time.h> + +// Include Proton headers +#include <proton/version.h> +#include <proton/condition.h> +#include <proton/connection.h> +#include <proton/delivery.h> +#include <proton/link.h> +#include <proton/listener.h> +#include <proton/netaddr.h> +#include <proton/message.h> +#include <proton/object.h> +#include <proton/proactor.h> +#include <proton/sasl.h> +#include <proton/session.h> +#include <proton/transport.h> +#include <proton/ssl.h> + +// Include rsyslog headers +#include "rsyslog.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "atomic.h" +#include "statsobj.h" +#include "unicode-helper.h" +#include "datetime.h" +#include "glbl.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omazureeventhubs") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(datetime) +DEFobjCurrIf(strm) +DEFobjCurrIf(statsobj) + +statsobj_t *azureStats; +STATSCOUNTER_DEF(ctrMessageSubmit, mutCtrMessageSubmit); +STATSCOUNTER_DEF(ctrAzureFail, mutCtrAzureFail); +STATSCOUNTER_DEF(ctrCacheMiss, mutCtrCacheMiss); +STATSCOUNTER_DEF(ctrCacheEvict, mutCtrCacheEvict); +STATSCOUNTER_DEF(ctrCacheSkip, mutCtrCacheSkip); +STATSCOUNTER_DEF(ctrAzureAck, mutCtrAzureAck); +STATSCOUNTER_DEF(ctrAzureMsgTooLarge, mutCtrAzureMsgTooLarge); +STATSCOUNTER_DEF(ctrAzureQueueFull, mutCtrAzureQueueFull); +STATSCOUNTER_DEF(ctrAzureOtherErrors, mutCtrAzureOtherErrors); +STATSCOUNTER_DEF(ctrAzureRespTimedOut, mutCtrAzureRespTimedOut); +STATSCOUNTER_DEF(ctrAzureRespTransport, mutCtrAzureRespTransport); +STATSCOUNTER_DEF(ctrAzureRespBrokerDown, mutCtrAzureRespBrokerDown); +STATSCOUNTER_DEF(ctrAzureRespAuth, mutCtrAzureRespAuth); +STATSCOUNTER_DEF(ctrAzureRespSSL, mutCtrAzureRespSSL); +STATSCOUNTER_DEF(ctrAzureRespOther, mutCtrAzureRespOther); + +#define MAX_ERRMSG 1024 /* max size of error messages that we support */ +#define MAX_DEFAULTMSGS 1024 /* Initial max size of the proton message helper array */ + +#define SETUP_PROTON_NONE 0 +#define SETUP_PROTON_AUTOCLOSE 1 + +/* flags for writeAzure: shall we resubmit a failed message? */ +#define RESUBMIT 1 +#define NO_RESUBMIT 0 + +/* flags for transaction Handling */ +enum proton_submission_status +{ + PROTON_UNSUBMITTED = 0, // Message not submitted yet + PROTON_SUBMITTED, // Message submitted to proton sender instance + PROTON_ACCEPTED, // Message accepted from remote target + PROTON_REJECTED, // Message rejected from remote target (zero credit?) +}; + +// event_property NEEDED? +struct event_property { + const char *key; + const char *val; +}; + +static pn_timestamp_t time_now(void); + +/* Struct for Proton Messages Listitems */ +struct s_protonmsg_entry { + uchar* payload; + size_t payload_len; + uchar* MsgID; + size_t MsgID_len; + + uchar* address; + char status; +}; +typedef struct s_protonmsg_entry protonmsg_entry; + +/* Struct for module InstanceData */ +typedef struct _instanceData { + uchar *amqp_address; + uchar *azurehost; + uchar *azureport; + uchar *azure_key_name; + uchar *azure_key; + uchar *container; + uchar *tplName; /* assigned output template */ + + int nEventProperties; + struct event_property *eventProperties; + + uchar *statsName; + statsobj_t *stats; + STATSCOUNTER_DEF(ctrMessageSubmit, mutCtrMessageSubmit); + STATSCOUNTER_DEF(ctrAzureFail, mutCtrAzureFail); + STATSCOUNTER_DEF(ctrAzureAck, mutCtrAzureAck); + STATSCOUNTER_DEF(ctrAzureOtherErrors, mutCtrAzureOtherErrors); +} instanceData; + +/* Struct for module workerInstanceData */ +typedef struct wrkrInstanceData { + instanceData *pData; + + protonmsg_entry **aProtonMsgs; /* dynamically sized array for transactional outputs */ + unsigned int nProtonMsgs; /* current used proton msgs */ + unsigned int nMaxProtonMsgs; /* current max */ + + int bIsConnecting; /* 1 if connecting, 0 if disconnected */ + int bIsConnected; /* 1 if connected, 0 if disconnected */ + int bIsSuspended; /* when broker fail, we need to suspend the action */ + pthread_rwlock_t pnLock; + + // PROTON Handles + pn_proactor_t *pnProactor; + pn_transport_t *pnTransport; + pn_connection_t *pnConn; + pn_link_t* pnSender; + pn_rwbytes_t pnMessageBuffer; /* Buffer for messages */ + int pnStatus; + + // Message Counters for sender link in worker instance + unsigned int iMsgSeq; + unsigned int iMaxMsgSeq; + + /* The following structure controls the proton handling threads. Passes necessary pointers + * needed for their access. + */ + sbool bThreadRunning; + pthread_t tid; /* the worker's thread ID */ + +} wrkrInstanceData_t; + +#define INST_STATSCOUNTER_INC(inst, ctr, mut) \ + do { \ + if (inst->stats) { STATSCOUNTER_INC(ctr, mut); } \ + } while(0); + +// QPID Proton Handler functions +static rsRetVal proton_run_thread(wrkrInstanceData_t *pWrkrData); +static rsRetVal proton_shutdown_thread(wrkrInstanceData_t *pWrkrData); +static void * proton_thread(void *myInfo); +static void handleProtonDelivery(wrkrInstanceData_t *const pWrkrData); +static void handleProton(wrkrInstanceData_t *const pWrkrData, pn_event_t *event); +static rsRetVal writeProton(wrkrInstanceData_t *__restrict__ const pWrkrData, + const actWrkrIParams_t *__restrict__ const pParam, + const int iMsg); + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "azurehost", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "azureport", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "azure_key_name", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "azure_key", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "amqp_address", eCmdHdlrString, 0 }, + { "container", eCmdHdlrString, 0 }, + { "eventproperties", eCmdHdlrArray, 0 }, + { "template", eCmdHdlrGetWord, 0 }, + { "statsname", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars +ENDinitConfVars + +static void ATTR_NONNULL(1) +protonmsg_entry_destruct(protonmsg_entry *const __restrict__ fmsgEntry) { + free(fmsgEntry->MsgID); + free(fmsgEntry->payload); + free(fmsgEntry->address); + free(fmsgEntry); +} + +/* note: we need the length of message as we need to deal with + * non-NUL terminated strings under some circumstances. + */ +static protonmsg_entry * ATTR_NONNULL(1,3) +protonmsg_entry_construct( const char *const MsgID, const size_t msgidlen, + const char *const msg, const size_t msglen, + const char *const address) +{ + protonmsg_entry *etry = NULL; + + if((etry = malloc(sizeof(struct s_protonmsg_entry))) == NULL) { + return NULL; + } + etry->status = PROTON_UNSUBMITTED; // Unsubmitted default */ + + etry->MsgID_len = msgidlen; + if((etry->MsgID = (uchar*)malloc(msgidlen+1)) == NULL) { + free(etry); + return NULL; + } + memcpy(etry->MsgID, MsgID, msgidlen); + etry->MsgID[msgidlen] = '\0'; + + etry->payload_len = msglen; + if((etry->payload = (uchar*)malloc(msglen+1)) == NULL) { + free(etry->MsgID); + free(etry); + return NULL; + } + memcpy(etry->payload, msg, msglen); + etry->payload[msglen] = '\0'; + + if((etry->address = (uchar*)strdup(address)) == NULL) { + free(etry->MsgID); + free(etry->payload); + free(etry); + return NULL; + } + return etry; +} + +/* Create a message with a map { "sequence" : number } encode it and return the encoded buffer. */ +static pn_message_t* proton_encode_message(wrkrInstanceData_t *const pWrkrData, protonmsg_entry* pMsgEntry) { + instanceData *const pData = (instanceData *const) pWrkrData->pData; + /* Construct a message with the map */ + pn_message_t* message = pn_message(); + // Optionally include Address? + // pn_message_set_address(message, (char *) pWrkrData->amqp_address); + + // Send in BINARY MODE ( as Stream ) + pn_message_set_content_type(message, (char*) "application/octect-stream"); + pn_message_set_creation_time(message, time_now()); + pn_message_set_inferred(message, true); + // Set message ID + pn_message_set_id(message, (pn_atom_t){ + .type=PN_STRING, + .u.as_bytes.start = (char*)pMsgEntry->MsgID, + .u.as_bytes.size = pMsgEntry->MsgID_len + }); + + if (pData->nEventProperties > 0) { + // Add Event properties + pn_data_t *props = pn_message_properties(message); + pn_data_put_map(props); + pn_data_enter(props); + + for(int i = 0 ; i < pData->nEventProperties ; ++i) { + DBGPRINTF("proton_encode_message: add eventproperty %s:%s\n", + pData->eventProperties[i].key, + pData->eventProperties[i].val); + pn_data_put_string(props, pn_bytes(strlen(pData->eventProperties[i].key), + pData->eventProperties[i].key)); + pn_data_put_string(props, pn_bytes(strlen(pData->eventProperties[i].val), + pData->eventProperties[i].val)); + } + pn_data_exit(props); + } + + // Set message BODY + pn_data_t* body = pn_message_body(message); + pn_data_enter(body); + pn_data_put_binary(body, pn_bytes(pMsgEntry->payload_len, (char*)pMsgEntry->payload)); + pn_data_exit(body); + + DBGPRINTF("proton_encode_message: created message id '%s': '%.*s'\n", + (char*)pMsgEntry->MsgID, + (pMsgEntry->payload_len > 0 ? (int)pMsgEntry->payload_len-1 : 0), + (char*)pMsgEntry->payload); + + return message; +} + +static rsRetVal +closeProton(wrkrInstanceData_t *const __restrict__ pWrkrData) +{ + DEFiRet; + instanceData *const pData = (instanceData *const) pWrkrData->pData; +#ifndef NDEBUG + DBGPRINTF("closeProton[%p]: ENTER\n", pWrkrData); +#endif + if (pWrkrData->pnSender) { + pn_link_close(pWrkrData->pnSender); + DBGPRINTF("closeProton[%p]: pn_link_close\n", pWrkrData); + pn_session_close(pn_link_session(pWrkrData->pnSender)); + DBGPRINTF("closeProton[%p]: pn_session_close\n", pWrkrData); + } + if (pWrkrData->pnConn) { + DBGPRINTF("closeProton[%p]: pn_connection_close connection\n", pWrkrData); + pn_connection_close(pWrkrData->pnConn); + } + + pWrkrData->bIsConnecting = 0; + pWrkrData->bIsConnected = 0; + pWrkrData->pnStatus = PN_EVENT_NONE; + + pWrkrData->pnSender = NULL; + pWrkrData->pnConn = NULL; + pWrkrData->iMsgSeq = 0; + pWrkrData->iMaxMsgSeq = 0; + + // Mark all remaining entries as REJECTED + if(pWrkrData->aProtonMsgs != NULL) { + for(unsigned int i = 0 ; i < pWrkrData->nProtonMsgs ; ++i) { + if (pWrkrData->aProtonMsgs[i] != NULL && ( + pWrkrData->aProtonMsgs[i]->status == PROTON_UNSUBMITTED || + pWrkrData->aProtonMsgs[i]->status == PROTON_SUBMITTED) + ) { + pWrkrData->aProtonMsgs[i]->status = PROTON_REJECTED; + DBGPRINTF("closeProton[%p]: Setting ProtonMsg %s to PROTON_REJECTED \n", + pWrkrData, pWrkrData->aProtonMsgs[i]->MsgID); + // Increment Stats Counter + STATSCOUNTER_INC(ctrAzureFail, mutCtrAzureFail); + INST_STATSCOUNTER_INC(pData, pData->ctrAzureFail, pData->mutCtrAzureFail); + } + } + } + + FINALIZE; +finalize_it: + RETiRet; + +} + +static rsRetVal +openProton(wrkrInstanceData_t *const __restrict__ pWrkrData) +{ + DEFiRet; + instanceData *const pData = (instanceData *const) pWrkrData->pData; + int pnErr = PN_OK; + char szAddr[PN_MAX_ADDR]; + pn_ssl_t* pnSsl; +#ifndef NDEBUG + DBGPRINTF("openProton[%p]: ENTER\n", pWrkrData); +#endif + if(pWrkrData->bIsConnecting == 1 || pWrkrData->bIsConnected == 1) + FINALIZE; + pWrkrData->pnStatus = PN_EVENT_NONE; + + pn_proactor_addr(szAddr, sizeof(szAddr), + (const char *) pData->azurehost, + (const char *) pData->azureport); + + // Configure a transport for SSL. The transport will be freed by the proactor. + pWrkrData->pnTransport = pn_transport(); + DBGPRINTF("openProton[%p]: create transport to '%s:%s'\n", + pWrkrData, pData->azurehost, pData->azureport); + pnSsl = pn_ssl(pWrkrData->pnTransport); + if (pnSsl != NULL) { + pn_ssl_domain_t* pnDomain = pn_ssl_domain(PN_SSL_MODE_CLIENT); + if (pData->azure_key_name != NULL && pData->azure_key != NULL) { + pnErr = pn_ssl_init(pnSsl, pnDomain, NULL); + if (pnErr) { + DBGPRINTF("openProton[%p]: pn_ssl_init failed for '%s:%s' with error %d: %s\n", + pWrkrData, pData->azurehost, pData->azureport, + pnErr, pn_code(pnErr)); + } + pn_sasl_allowed_mechs(pn_sasl(pWrkrData->pnTransport), "PLAIN"); + } else { + pnErr = pn_ssl_domain_set_peer_authentication(pnDomain, PN_SSL_ANONYMOUS_PEER, NULL); + if (!pnErr) { + pnErr = pn_ssl_init(pnSsl, pnDomain, NULL); + } else { + DBGPRINTF( + "openProton[%p]: pn_ssl_domain_set_peer_authentication failed with '%d'\n", + pWrkrData, pnErr); + } + } + pn_ssl_domain_free(pnDomain); + } else { + LogError(0, RS_RET_ERR, "openProton[%p]: openProton pn_ssl_init NULL", pWrkrData); + } + + // Handle ERROR Output + if (pnErr) { + LogError(0, RS_RET_IO_ERROR, "openProton[%p]: creating transport to '%s:%s' " + "failed with error %d: %s\n", + pWrkrData, pData->azurehost, pData->azureport, + pnErr, pn_code(pnErr)); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + // Connect to Azure Event Hubs + pn_proactor_connect2(pWrkrData->pnProactor, NULL, pWrkrData->pnTransport, szAddr); + + // Successfully connecting + pWrkrData->bIsConnecting = 1; + pWrkrData->bIsSuspended = 0; +finalize_it: + if(iRet != RS_RET_OK) { + closeProton(pWrkrData); // Make sure to free ressources + } + RETiRet; +} + +static sbool +proton_check_condition( pn_event_t *event, + wrkrInstanceData_t *const __restrict__ pWrkrData, + pn_condition_t *cond, + const char * pszReason) { + if (pn_condition_is_set(cond)) { + DBGPRINTF("proton_check_condition: %s %s: %s: %s", + pszReason, + pn_event_type_name(pn_event_type(event)), + pn_condition_get_name(cond), + pn_condition_get_description(cond)); + LogError(0, RS_RET_ERR, "omazureeventhubs: %s %s: %s: %s", + pszReason, + pn_event_type_name(pn_event_type(event)), + pn_condition_get_name(cond), + pn_condition_get_description(cond)); + + // Connection can be closed + closeProton(pWrkrData); + + // Set Worker to suspended state! + pWrkrData->bIsSuspended = 1; + + return 0; + } else { + return 1; + } +} + +static rsRetVal +setupProtonHandle(wrkrInstanceData_t *const __restrict__ pWrkrData, int autoclose) +{ + DEFiRet; + DBGPRINTF("omazureeventhubs[%p]: setupProtonHandle ENTER\n", pWrkrData); + + pthread_rwlock_wrlock(&pWrkrData->pnLock); + if (autoclose == SETUP_PROTON_AUTOCLOSE && (pWrkrData->bIsConnected == 1)) { + DBGPRINTF("omazureeventhubs[%p]: setupProtonHandle closeProton\n", pWrkrData); + closeProton(pWrkrData); + } + CHKiRet(openProton(pWrkrData)); +finalize_it: + if (iRet != RS_RET_OK) { + /* Parameter Error's cannot be resumed, so we need to disable the action */ + if (iRet == RS_RET_PARAM_ERROR) { + iRet = RS_RET_DISABLE_ACTION; + LogError(0, iRet, "omazureeventhubs: action will be disabled due invalid " + "configuration parameters\n"); + } + } + pthread_rwlock_unlock(&pWrkrData->pnLock); + RETiRet; +} + +static rsRetVal +writeProton(wrkrInstanceData_t *__restrict__ const pWrkrData, + const actWrkrIParams_t *__restrict__ const pParam, + const int iMsg) +{ + DEFiRet; + instanceData *const pData = (instanceData *const) pWrkrData->pData; + protonmsg_entry* fmsgEntry; + + // Create Unqiue Message ID + char szMsgID[64]; + sprintf(szMsgID, "%d", pWrkrData->iMsgSeq); + + const char* pszParamStr = (const char*)actParam(pParam, 1 /*pData->iNumTpls*/, iMsg, 0).param; + size_t tzParamStrLen = actParam(pParam, 1 /*pData->iNumTpls*/, iMsg, 0).lenStr; + + DBGPRINTF("omazureeventhubs[%p]: writeProton for msg %d (seq %d) msg:'%.*s%s'\n", + pWrkrData, + iMsg, pWrkrData->iMsgSeq, + (int)(tzParamStrLen > 0 ? (tzParamStrLen > 64 ? 64 : tzParamStrLen-1) : 0), + pszParamStr, + (tzParamStrLen > 64 ? "..." : "")); + // Increment Message sequence number + pWrkrData->iMsgSeq++; + + // Add message to LIST for sending + CHKmalloc(fmsgEntry = protonmsg_entry_construct( + szMsgID, sizeof(szMsgID), + pszParamStr, + tzParamStrLen, + (const char*)pData->amqp_address)); + // Add to helper Array + pWrkrData->aProtonMsgs[iMsg] = fmsgEntry; +finalize_it: + RETiRet; +} + +BEGINcreateInstance +CODESTARTcreateInstance + DBGPRINTF("createInstance[%p]: ENTER\n", pData); + pData->amqp_address = NULL; + pData->azurehost = NULL; + pData->azureport = NULL; + pData->azure_key_name = NULL; + pData->azure_key = NULL; + pData->container = NULL; +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + DBGPRINTF("createWrkrInstance[%p]: ENTER\n", pWrkrData); + pWrkrData->bIsConnecting = 0; + pWrkrData->bIsConnected = 0; + pWrkrData->bIsSuspended = 0; + + // Create Proton proActor in Worker Instance + pWrkrData->pnProactor = pn_proactor(); + pWrkrData->pnConn = NULL; + pWrkrData->pnTransport = NULL; + pWrkrData->pnSender = NULL; + + pWrkrData->iMsgSeq = 0; + pWrkrData->iMaxMsgSeq = 0; + pWrkrData->pnMessageBuffer.start = NULL; + + pWrkrData->nProtonMsgs = 0; + pWrkrData->nMaxProtonMsgs = MAX_DEFAULTMSGS; + CHKmalloc(pWrkrData->aProtonMsgs = calloc(MAX_DEFAULTMSGS, sizeof(struct s_protonmsg_entry))); + + CHKiRet(pthread_rwlock_init(&pWrkrData->pnLock, NULL)); + + pWrkrData->bThreadRunning = 0; + pWrkrData->tid = 0; + + // Run Proton Worker Thread now + proton_run_thread(pWrkrData); +finalize_it: + DBGPRINTF("createWrkrInstance[%p] returned %d\n", pWrkrData, iRet); +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + DBGPRINTF("freeInstance[%p]: ENTER\n", pData); + + if (pData->stats) { + statsobj.Destruct(&pData->stats); + } + + /* Free other mem */ + free(pData->amqp_address); + free(pData->azurehost); + free(pData->azureport); + free(pData->azure_key_name); + free(pData->azure_key); + free(pData->container); + + free(pData->tplName); + free(pData->statsName); + for(int i = 0 ; i < pData->nEventProperties ; ++i) { + free((void*) pData->eventProperties[i].key); + free((void*) pData->eventProperties[i].val); + } + free(pData->eventProperties); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + DBGPRINTF("freeWrkrInstance[%p]: ENTER\n", pWrkrData); + + /* Closing azure first! */ + pthread_rwlock_wrlock(&pWrkrData->pnLock); + + // Close Proton Connection + closeProton(pWrkrData); + + // Stop Proton Handle Thread + proton_shutdown_thread(pWrkrData); + + // Free Proton Ressources + if (pWrkrData->pnProactor != NULL) { + DBGPRINTF("freeWrkrInstance[%p]: FREE proactor\n", pWrkrData); + pn_proactor_free(pWrkrData->pnProactor); + pWrkrData->pnProactor = NULL; + } + free(pWrkrData->pnMessageBuffer.start); + + pthread_rwlock_unlock(&pWrkrData->pnLock); + + // Free our proton helper array + if(pWrkrData->aProtonMsgs != NULL) { + for(unsigned int i = 0 ; i < pWrkrData->nProtonMsgs ; ++i) { + if (pWrkrData->aProtonMsgs[i] != NULL) { + protonmsg_entry_destruct(pWrkrData->aProtonMsgs[i]); + } + } + free(pWrkrData->aProtonMsgs); + } + + pthread_rwlock_destroy(&pWrkrData->pnLock); +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + +BEGINtryResume +CODESTARTtryResume +#ifndef NDEBUG + DBGPRINTF("omazureeventhubs[%p]: tryResume ENTER\n", pWrkrData); +#endif + if (pWrkrData->bIsConnecting == 0 && pWrkrData->bIsConnected == 0) { + DBGPRINTF("omazureeventhubs[%p]: tryResume setupProtonHandle\n", pWrkrData); + CHKiRet(setupProtonHandle(pWrkrData, SETUP_PROTON_AUTOCLOSE)); + } +finalize_it: + DBGPRINTF("omazureeventhubs[%p]: tryResume returned %d\n", pWrkrData, iRet); +ENDtryResume + +BEGINbeginTransaction +CODESTARTbeginTransaction + /* we have nothing to do to begin a transaction */ + DBGPRINTF("omazureeventhubs[%p]: beginTransaction ENTER\n", pWrkrData); + if (pWrkrData->bIsConnecting == 0 && pWrkrData->bIsConnected == 0) { + CHKiRet(setupProtonHandle(pWrkrData, SETUP_PROTON_NONE)); + } +finalize_it: + RETiRet; +ENDbeginTransaction + +/* + * New Transaction action interface +*/ +BEGINcommitTransaction + // instanceData *__restrict__ const pData = pWrkrData->pData; + unsigned i; + unsigned iNeedSubmission; + sbool bDone = 0; + protonmsg_entry* pMsgEntry = NULL; +CODESTARTcommitTransaction +#ifndef NDEBUG + DBGPRINTF("omazureeventhubs[%p]: commitTransaction [%d msgs] ENTER\n", pWrkrData, nParams); +#endif + + // Handle/Expand our proton helper array + if (nParams > pWrkrData->nMaxProtonMsgs) { + // Free old Array + if(pWrkrData->aProtonMsgs != NULL) { + free(pWrkrData->aProtonMsgs); + } + // Expand our proton helper array + DBGPRINTF("omazureeventhubs[%p]: commitTransaction expand helper array from %d to %d\n", + pWrkrData, pWrkrData->nMaxProtonMsgs, nParams); + pWrkrData->nMaxProtonMsgs = nParams; // Set new MAX + CHKmalloc(pWrkrData->aProtonMsgs = calloc(pWrkrData->nMaxProtonMsgs, sizeof(struct s_protonmsg_entry))); + } + // Copy count of New Messages and increase MaxMsgSeq + pWrkrData->nProtonMsgs = nParams; + pWrkrData->iMaxMsgSeq += nParams; + + do { + iNeedSubmission = 0; + // Put unsubmitted messages into Proton + for(i = 0 ; i < nParams ; ++i) { + // Get reference to Proton Array Helper + pMsgEntry = ((protonmsg_entry*)pWrkrData->aProtonMsgs[i]); + if ( pMsgEntry == NULL) { + // Send Message to Proton + writeProton(pWrkrData, pParams, i); + } else if ( pMsgEntry->status == PROTON_REJECTED) { + // Reset Message Entry, it will be retried + pMsgEntry->status = PROTON_UNSUBMITTED; + } + } + bDone = 1; + + // Wait 100 microseconds + srSleep(0, 100000); + + // Verify if messages have been submitted successfully + for(i = 0 ; i < nParams ; ++i) { + // Get reference to Proton Array Helper + pMsgEntry = ((protonmsg_entry*)pWrkrData->aProtonMsgs[i]); + if (pMsgEntry != NULL) { + if ( pMsgEntry->status == PROTON_UNSUBMITTED) { + iNeedSubmission++; + // we need to retry check later + bDone = 0; + } else if ( pMsgEntry->status == PROTON_SUBMITTED) { + // we need to retry check later + bDone = 0; + } + } + } + + if (iNeedSubmission > 0) { + if ( pWrkrData->bIsConnected == 1) { + int credits = pn_link_credit(pWrkrData->pnSender); + if (pn_link_credit(pWrkrData->pnSender) > 0) { + DBGPRINTF("omazureeventhubs[%p]: trigger pn_connection_wake\n", + pWrkrData); + pn_connection_wake(pWrkrData->pnConn); + } else { + DBGPRINTF("omazureeventhubs[%p]: warning pn_link_credit returned %d\n", + pWrkrData, credits); + } + } else { + DBGPRINTF("omazureeventhubs[%p]: commitTransaction Suspended=%s Connecting=%s\n", + pWrkrData, + pWrkrData->bIsSuspended == 1 ? "YES" : "NO", + pWrkrData->bIsConnecting == 1 ? "YES" : "NO"); + if (pWrkrData->bIsSuspended == 1 && pWrkrData->bIsConnecting == 0) { + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + } + } + } while (bDone == 0); +finalize_it: + // Free Proton Message Helpers + if (pWrkrData->aProtonMsgs != NULL) { + for(i = 0 ; i < nParams ; ++i) { + if (pWrkrData->aProtonMsgs[i] != NULL) { + // Destroy + protonmsg_entry_destruct(pWrkrData->aProtonMsgs[i]); + pWrkrData->aProtonMsgs[i] = NULL; + } + } + } + + /* TODO: Suspend Action if broker problems were reported in error callback */ + if (pWrkrData->bIsSuspended == 1) { + DBGPRINTF("omazureeventhubs[%p]: commitTransaction failed to send messages, suspending action\n", + pWrkrData); + iRet = RS_RET_SUSPENDED; + } + if(iRet != RS_RET_OK) { + DBGPRINTF("omazureeventhubs[%p]: commitTransaction failed with status %d\n", pWrkrData, iRet); + } + DBGPRINTF("omazureeventhubs[%p]: commitTransaction [%d msgs] EXIT\n", pWrkrData, nParams); +ENDcommitTransaction + +static void +setInstParamDefaults(instanceData *pData) { + DBGPRINTF("setInstParamDefaults[%p]: ENTER\n", pData); + pData->amqp_address = NULL; + pData->azurehost = NULL; + pData->azureport = NULL; + pData->azure_key_name = NULL; + pData->azure_key = NULL; + pData->container = NULL; + pData->nEventProperties = 0; + pData->eventProperties = NULL; +} + +static rsRetVal +processEventProperty(char *const param, + const char **const name, + const char **const paramval) { + DEFiRet; + char *val = strstr(param, "="); + if(val == NULL) { + LogError(0, RS_RET_PARAM_ERROR, "missing equal sign in " + "parameter '%s'", param); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + *val = '\0'; /* terminates name */ + ++val; /* now points to begin of value */ + CHKmalloc(*name = strdup(param)); + CHKmalloc(*paramval = strdup(val)); +finalize_it: + RETiRet; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; + int iNumTpls; + DBGPRINTF("newActInst: ENTER\n"); +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "amqp_address")) { + pData->amqp_address = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "azurehost")) { + pData->azurehost = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "azureport")) { + pData->azureport = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "azure_key_name")) { + pData->azure_key_name = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "azure_key")) { + pData->azure_key = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "container")) { + pData->container = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "eventproperties")) { + pData->nEventProperties = pvals[i].val.d.ar->nmemb; + CHKmalloc(pData->eventProperties = malloc(sizeof(struct event_property) * + pvals[i].val.d.ar->nmemb )); + for(int j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + char *cstr = es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + CHKiRet(processEventProperty(cstr, &pData->eventProperties[j].key, + &pData->eventProperties[j].val)); + free(cstr); + } + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "statsname")) { + pData->statsName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + LogError(0, RS_RET_INTERNAL_ERROR, + "omazureeventhubs: program error, non-handled param '%s'\n", actpblk.descr[i].name); + } + } + + if(pData->azure_key_name == NULL || pData->azure_key == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, + "omazureeventhubs: azure_key_name and azure_key are requires to access azure eventhubs" + " - action definition invalid"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + + if(pData->container == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, + "omazureeventhubs: Event Hubs \"container\" parameter (which is instance) not specified " + " - action definition invalid"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + + if(pData->amqp_address == NULL) { + if(pData->azurehost == NULL) { + LogMsg(0, NO_ERRCODE, LOG_INFO, "omazureeventhubs: \"azurehost\" parameter not specified " + "(youreventhubinstance.servicebus.windows.net- action definition invalid!"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + if(pData->azureport== NULL) { + // Set default + CHKmalloc(pData->azureport = (uchar *) strdup("5671")); + } + + // Create amqps URL from parameters + char szAddress[1024]; + sprintf(szAddress, "amqps://%s:%s@%s:%s/%s", + pData->azure_key_name, + pData->azure_key, + pData->azurehost, + pData->azureport, + pData->container); + CHKmalloc(pData->amqp_address = (uchar*) strdup(szAddress)); + } + + iNumTpls = 1; + CODE_STD_STRING_REQUESTnewActInst(iNumTpls); + + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*)strdup((pData->tplName == NULL) ? + "RSYSLOG_FileFormat" : (char*)pData->tplName), + OMSR_NO_RQD_TPL_OPTS)); + + if (pData->statsName) { + CHKiRet(statsobj.Construct(&pData->stats)); + CHKiRet(statsobj.SetName(pData->stats, (uchar *)pData->statsName)); + CHKiRet(statsobj.SetOrigin(pData->stats, (uchar *)"omazureeventhubs")); + + /* Track following stats */ + STATSCOUNTER_INIT(pData->ctrMessageSubmit, pData->mutCtrMessageSubmit); + CHKiRet(statsobj.AddCounter(pData->stats, (uchar *)"submitted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &pData->ctrMessageSubmit)); + STATSCOUNTER_INIT(pData->ctrAzureFail, pData->mutCtrAzureFail); + CHKiRet(statsobj.AddCounter(pData->stats, (uchar *)"failures", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &pData->ctrAzureFail)); + STATSCOUNTER_INIT(pData->ctrAzureAck, pData->mutCtrAzureAck); + CHKiRet(statsobj.AddCounter(pData->stats, (uchar *)"accepted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &pData->ctrAzureAck)); + STATSCOUNTER_INIT(pData->ctrAzureOtherErrors, pData->mutCtrAzureOtherErrors); + CHKiRet(statsobj.AddCounter(pData->stats, (uchar *)"othererrors", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &pData->ctrAzureOtherErrors)); + CHKiRet(statsobj.ConstructFinalize(pData->stats)); + } + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINmodExit +CODESTARTmodExit + DBGPRINTF("modExit: ENTER\n"); + statsobj.Destruct(&azureStats); + CHKiRet(objRelease(statsobj, CORE_COMPONENT)); + DESTROY_ATOMIC_HELPER_MUT(mutClock); + + objRelease(glbl, CORE_COMPONENT); +finalize_it: +ENDmodExit + +NO_LEGACY_CONF_parseSelectorAct +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMODTX_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_CNFNAME_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit +// uchar *pTmp; + DBGPRINTF("modInit: ENTER\n"); +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + /* request objects we use */ + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(strm, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + +// INIT_ATOMIC_HELPER_MUT(mutClock); + DBGPRINTF("omazureeventhubs %s using qpid-proton library %d.%d.%d\n", + VERSION, PN_VERSION_MAJOR, PN_VERSION_MINOR, PN_VERSION_POINT); + + CHKiRet(statsobj.Construct(&azureStats)); + CHKiRet(statsobj.SetName(azureStats, (uchar *)"omazureeventhubs")); + CHKiRet(statsobj.SetOrigin(azureStats, (uchar*)"omazureeventhubs")); + STATSCOUNTER_INIT(ctrMessageSubmit, mutCtrMessageSubmit); + CHKiRet(statsobj.AddCounter(azureStats, (uchar *)"submitted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrMessageSubmit)); + STATSCOUNTER_INIT(ctrAzureFail, mutCtrAzureFail); + CHKiRet(statsobj.AddCounter(azureStats, (uchar *)"failures", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrAzureFail)); + STATSCOUNTER_INIT(ctrAzureAck, mutCtrAzureAck); + CHKiRet(statsobj.AddCounter(azureStats, (uchar *)"accepted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrAzureAck)); + STATSCOUNTER_INIT(ctrAzureOtherErrors, mutCtrAzureOtherErrors); + CHKiRet(statsobj.AddCounter(azureStats, (uchar *)"failures_other", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrAzureOtherErrors)); + CHKiRet(statsobj.ConstructFinalize(azureStats)); +ENDmodInit + +pn_timestamp_t time_now(void) +{ + struct timeval now; + if (gettimeofday(&now, NULL)) return 0; + return ((pn_timestamp_t)now.tv_sec) * 1000 + (now.tv_usec / 1000); +} + +/* +* Start PROTON Handling Thread +*/ +static rsRetVal proton_run_thread(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + int iErr = 0; + if ( !pWrkrData->bThreadRunning) { + DBGPRINTF("omazureeventhubs[%p]: proton_run_thread\n", pWrkrData); + + do { + iErr = pthread_create(&pWrkrData->tid, + NULL, + proton_thread, + pWrkrData); + if (!iErr) { + pWrkrData->bThreadRunning = 1; + DBGPRINTF("omazureeventhubs[%p]: proton_run_thread (tid %lx) created\n", + pWrkrData, pWrkrData->tid); + FINALIZE; + } + } while (iErr == EAGAIN); + } else { + DBGPRINTF("omazureeventhubs[%p]: proton_run_thread (tid %ld) already running\n", + pWrkrData, pWrkrData->tid); + } +finalize_it: + if (iRet != RS_RET_OK) { + LogError(0, RS_RET_SYS_ERR, "omazureeventhubs: proton_run_thread thread create failed with error: %d", + iErr); + } + RETiRet; +} +/* Stop PROTON Handling Thread +*/ +static rsRetVal +proton_shutdown_thread(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + if ( pWrkrData->bThreadRunning) { + DBGPRINTF("omazureeventhubs[%p]: STOPPING Thread\n", pWrkrData); + int r = pthread_cancel(pWrkrData->tid); + if(r == 0) { + pthread_join(pWrkrData->tid, NULL); + } + DBGPRINTF("omazureeventhubs[%p]: STOPPED Thread\n", pWrkrData); + pWrkrData->bThreadRunning = 0; + } + FINALIZE; +finalize_it: + RETiRet; +} + +/* +* Workerthread function for a single ProActor Handler + */ +static void * +proton_thread(void __attribute__((unused)) *pVoidWrkrData) +{ + wrkrInstanceData_t *const pWrkrData = (wrkrInstanceData_t *const) pVoidWrkrData; + instanceData *const pData = (instanceData *const) pWrkrData->pData; + + DBGPRINTF("proton_thread[%p]: started protocol workerthread(%lx) for %s:%s/%s\n", + pWrkrData, pthread_self(), pData->azurehost, pData->azureport, pData->container); + + do { + if ( pWrkrData->pnProactor != NULL) { + // Process Protocol events + pn_event_batch_t *events = pn_proactor_wait(pWrkrData->pnProactor); + pn_event_t *event; + while ((event = pn_event_batch_next(events))) { + handleProton(pWrkrData, event); + } + pn_proactor_done(pWrkrData->pnProactor, events); + } else { + // Wait 10 microseconds + srSleep(0, 10000); + } + } while(glbl.GetGlobalInputTermState() == 0); + + DBGPRINTF("proton_thread[%p]: stopped protocol workerthread\n", pWrkrData); + return NULL; +} + +static void +handleProtonDelivery(wrkrInstanceData_t *const pWrkrData) { + instanceData *const pData = (instanceData *const) pWrkrData->pData; + + /* Process messages from ARRAY */ + for(unsigned int i = 0 ; i < pWrkrData->nProtonMsgs ; ++i) { + protonmsg_entry* pMsgEntry = (protonmsg_entry*) pWrkrData->aProtonMsgs[i]; + // Process Unsubmitted messages only + if (pMsgEntry != NULL) { + if (pMsgEntry->status == PROTON_UNSUBMITTED) { + int iCreditBalance = pn_link_credit(pWrkrData->pnSender); + if (iCreditBalance > 0) { + DBGPRINTF( + "handleProtonDelivery: PN_LINK_FLOW deliver '%s' @ %p:%s:%s/%s, msg:'%.*s'\n", + pMsgEntry->MsgID, + pWrkrData, + pData->azurehost, + pData->azureport, + pData->container, + (pMsgEntry->payload_len > 0 ? + (int)pMsgEntry->payload_len-1 : 0), + pMsgEntry->payload); + + /* Use sent counter as unique delivery tag. */ + pn_delivery(pWrkrData->pnSender, pn_dtag((const char *)pMsgEntry->MsgID, + pMsgEntry->MsgID_len)); + + /* Construct a message with the map */ + pn_message_t* message = proton_encode_message(pWrkrData, pMsgEntry); + /* + * pn_message_send does performs the following steps: + * - call pn_message_encode2() to encode the message to a buffer + * - call pn_link_send() to send the encoded message bytes + * - call pn_link_advance() to indicate the message is complete + */ + if (pn_message_send( message, + pWrkrData->pnSender, + &pWrkrData->pnMessageBuffer) < 0) { + LogMsg(0, NO_ERRCODE, LOG_INFO, + "handleProtonDelivery: PN_LINK_FLOW deliver SEND ERROR %s\n", + pn_error_text(pn_message_error(message))); + pn_message_free(message); + break; + } else { + DBGPRINTF("handleProtonDelivery: PN_LINK_FLOW deliver SUCCESS\n"); + pn_message_free(message); + } + + STATSCOUNTER_INC(ctrMessageSubmit, mutCtrMessageSubmit); + INST_STATSCOUNTER_INC( pData, + pData->ctrMessageSubmit, + pData->mutCtrMessageSubmit); + pMsgEntry->status = PROTON_SUBMITTED; + } else { + DBGPRINTF("handleProtonDelivery: sender credit balance reached %d. " + "extend credit for %d\n", iCreditBalance, pWrkrData->nProtonMsgs); + pn_link_flow(pWrkrData->pnSender, pWrkrData->nProtonMsgs); + + // TODO: MAKE CONFIGUREABLE + // Wait 10 microseconds + // srSleep(0, 10000); + break; + } + } + } else { + // Abort further processing if pMsgEntry is NULL + break; + } + } +} + +/* Handles PROTON Communication in this Function +* +*/ +#pragma GCC diagnostic ignored "-Wswitch" +static void +handleProton(wrkrInstanceData_t *const pWrkrData, pn_event_t *event) { + instanceData *const pData = (instanceData *const) pWrkrData->pData; + /* Handle Proton Events */ + switch (pn_event_type(event)) { + case PN_CONNECTION_BOUND: { + DBGPRINTF("handleProton: PN_CONNECTION_BOUND to %p:%s:%s/%s\n", + pWrkrData, pData->azurehost, pData->azureport, pData->container); + break; + } + case PN_SESSION_INIT : { + DBGPRINTF("handleProton: PN_SESSION_INIT to %p:%s:%s/%s\n", + pWrkrData, pData->azurehost, pData->azureport, pData->container); + break; + } + case PN_LINK_INIT: { + DBGPRINTF("handleProton: PN_LINK_INIT to %p:%s:%s/%s\n", + pWrkrData, pData->azurehost, pData->azureport, pData->container); + break; + } + case PN_LINK_REMOTE_OPEN: { + DBGPRINTF("handleProton: PN_LINK_REMOTE_OPEN to %p:%s:%s/%s\n", + pWrkrData, pData->azurehost, pData->azureport, pData->container); + pWrkrData->bIsConnected = 1; + pWrkrData->bIsConnecting = 0; + break; + } + case PN_CONNECTION_INIT: { + DBGPRINTF("handleProton: PN_CONNECTION_INIT to %p:%s:%s/%s\n", + pWrkrData, pData->azurehost, pData->azureport, pData->container); + pWrkrData->pnStatus = PN_CONNECTION_INIT; + + // Get Connection + pWrkrData->pnConn = pn_event_connection(event); + // Set AMQP Properties + pn_connection_set_container(pWrkrData->pnConn, (const char *) pData->container); + pn_connection_set_hostname(pWrkrData->pnConn, (const char *) pData->azurehost); + pn_connection_set_user(pWrkrData->pnConn, (const char *) pData->azure_key_name); + pn_connection_set_password(pWrkrData->pnConn, (const char *) pData->azure_key); + + pn_connection_open(pWrkrData->pnConn); // Open Connection + pn_session_t* pnSession = pn_session(pWrkrData->pnConn); // Create Session + pn_session_open(pnSession); // Open Session + pWrkrData->pnSender = pn_sender(pnSession, (char *)pData->azure_key_name); // Create Link + + DBGPRINTF("handleProton: PN_CONNECTION_INIT with amqp address: %s\n", + pData->amqp_address); + pn_terminus_set_address(pn_link_target(pWrkrData->pnSender), + (const char *) pData->amqp_address); + + pn_link_open(pWrkrData->pnSender); + pn_link_flow(pWrkrData->pnSender, pWrkrData->nProtonMsgs); + break; + } + case PN_CONNECTION_REMOTE_OPEN: { + DBGPRINTF("handleProton: PN_CONNECTION_REMOTE_OPEN to %p:%s:%s/%s\n", + pWrkrData, pData->azurehost, pData->azureport, pData->container); + pWrkrData->pnStatus = PN_CONNECTION_REMOTE_OPEN; + pn_ssl_t *ssl = pn_ssl(pn_event_transport(event)); + if (ssl) { + char name[1024]; + pn_ssl_get_protocol_name(ssl, name, sizeof(name)); + { + const char *subject = pn_ssl_get_remote_subject(ssl); + if (subject) { + DBGPRINTF( + "handleProton: handleProton secure connection: to %s using %s\n", + subject, name); + } else { + DBGPRINTF( + "handleProton: handleProton anonymous connection: using %s\n", + name); + } + fflush(stdout); + } + } + break; + } + case PN_CONNECTION_WAKE: { + DBGPRINTF("handleProton: PN_CONNECTION_WAKE (%d) to %p:%s:%s/%s\n", + pWrkrData->nProtonMsgs, + pWrkrData, pData->azurehost, pData->azureport, pData->container); + /* Process messages */ + handleProtonDelivery(pWrkrData); + break; + } + case PN_LINK_FLOW: { + pWrkrData->pnStatus = PN_LINK_FLOW; + /* The peer has given us some credit, now we can send messages */ + pWrkrData->pnSender = pn_event_link(event); + + /* Process messages */ + handleProtonDelivery(pWrkrData); + break; + } + case PN_DELIVERY: { + pWrkrData->pnStatus = PN_DELIVERY; + /* We received acknowledgement from the peer that a message was delivered. */ + pn_delivery_t* pDeliveryStatus = pn_event_delivery(event); + pn_delivery_tag_t pnTag = pn_delivery_tag(pDeliveryStatus); + + if (pnTag.start != NULL) { + // Convert Tag into Number! + unsigned int iTagNum = (unsigned int) atoi((pnTag.start != NULL ? pnTag.start : "")); + // Calc QueueNumber from Tagnum + unsigned int iQueueNum = pWrkrData->nProtonMsgs - (pWrkrData->iMaxMsgSeq - iTagNum); + // Get proton Msg Helper (checks for out of bound array access) + protonmsg_entry* pMsgEntry = NULL; + if (pWrkrData->nMaxProtonMsgs > iQueueNum) { + pMsgEntry = (protonmsg_entry*) pWrkrData->aProtonMsgs[iQueueNum]; + } + // Process if found + if (pMsgEntry != NULL) { + if (pn_delivery_remote_state(pDeliveryStatus) == PN_ACCEPTED) { + DBGPRINTF( + "handleProton: PN_DELIVERY SUCCESS for MSG '%s(Q %d, MAX %d)' @ %p:%s:%s/%s\n", + (pnTag.start != NULL ? (char*) pnTag.start : "NULL"), + iQueueNum, + pWrkrData->nMaxProtonMsgs, + pWrkrData, pData->azurehost, pData->azureport, pData->container); + pMsgEntry->status = PROTON_ACCEPTED; + + // Increment Stats Counter + STATSCOUNTER_INC(ctrAzureAck, mutCtrAzureAck); + INST_STATSCOUNTER_INC(pData, pData->ctrAzureAck, pData->mutCtrAzureAck); + } else if (pn_delivery_remote_state(pDeliveryStatus) == PN_REJECTED) { + LogError(0, RS_RET_ERR, + "omazureeventhubs: PN_DELIVERY REJECTED for MSG '%s'" + " - @ %p:%s:%s/%s\n", + (pnTag.start != NULL ? (char*) pnTag.start : "NULL"), + pWrkrData, pData->azurehost, pData->azureport, pData->container); + pMsgEntry->status = PROTON_REJECTED; + + // Increment Stats Counter + STATSCOUNTER_INC(ctrAzureFail, mutCtrAzureFail); + INST_STATSCOUNTER_INC(pData, pData->ctrAzureFail, pData->mutCtrAzureFail); + } + } else { + DBGPRINTF("handleProton: PN_DELIVERY MISSING MSG '%d(Q %d,MAX %d)' - @ %p:%s:%s/%s\n", + iTagNum, + iQueueNum, + pWrkrData->nMaxProtonMsgs, + pWrkrData, pData->azurehost, pData->azureport, pData->container); + STATSCOUNTER_INC(ctrAzureOtherErrors, mutCtrAzureOtherErrors); + INST_STATSCOUNTER_INC(pData, pData->ctrAzureOtherErrors, pData->mutCtrAzureOtherErrors); + } + } else { + LogError(0, RS_RET_ERR,"handleProton: PN_DELIVERY HELPER ARRAY is NULL - @ %p:%s:%s/%s\n", + pWrkrData, pData->azurehost, pData->azureport, pData->container); + STATSCOUNTER_INC(ctrAzureOtherErrors, mutCtrAzureOtherErrors); + INST_STATSCOUNTER_INC(pData, pData->ctrAzureOtherErrors, pData->mutCtrAzureOtherErrors); + } + break; + } + case PN_TRANSPORT_CLOSED: + DBGPRINTF("handleProton: transport closed for %p:%s\n", pWrkrData, pData->azurehost); + proton_check_condition(event, pWrkrData, pn_transport_condition(pn_event_transport(event)), + "transport closed"); + break; + case PN_CONNECTION_REMOTE_CLOSE: + DBGPRINTF("handleProton: connection closed for %p:%s\n", pWrkrData, pData->azurehost); + proton_check_condition(event, pWrkrData, pn_connection_remote_condition(pn_event_connection(event)), + "connection closed"); + break; + case PN_SESSION_REMOTE_CLOSE: + DBGPRINTF("handleProton: remote session closed for %p:%s\n", pWrkrData, pData->azurehost); + proton_check_condition(event, pWrkrData, pn_session_remote_condition(pn_event_session(event)), + "remote session closed"); + break; + case PN_LINK_REMOTE_CLOSE: + case PN_LINK_REMOTE_DETACH: + DBGPRINTF("handleProton: remote link closed for %p:%s\n", pWrkrData, pData->azurehost); + proton_check_condition(event, pWrkrData, pn_link_remote_condition(pn_event_link(event)), + "remote link closed"); + break; + case PN_PROACTOR_INACTIVE: + DBGPRINTF("handleProton: INAKTIVE for %p:%s\n", pWrkrData, pData->azurehost); + break; +/* Workarround compiler warning: +* error: enumeration value '...' not handled in switch [-Werror=switch-enum] +*/ +#ifdef __GNU_C + default: + DBGPRINTF("handleProton: UNHANDELED EVENT %d for %p:%s\n", pn_event_type(event), + pWrkrData, pData->azurehost); + break; +#endif + } +} diff --git a/plugins/omclickhouse/Makefile.am b/plugins/omclickhouse/Makefile.am new file mode 100644 index 0000000..8ddd358 --- /dev/null +++ b/plugins/omclickhouse/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = omclickhouse.la + +omclickhouse_la_SOURCES = omclickhouse.c +omclickhouse_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) $(CURL_CFLAGS) +omclickhouse_la_LDFLAGS = -module -avoid-version +omclickhouse_la_LIBADD = $(CURL_LIBS) $(LIBM) + +EXTRA_DIST = diff --git a/plugins/omclickhouse/Makefile.in b/plugins/omclickhouse/Makefile.in new file mode 100644 index 0000000..2a04c8f --- /dev/null +++ b/plugins/omclickhouse/Makefile.in @@ -0,0 +1,800 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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+install-exec-am: install-pkglibLTLIBRARIES + +install-html: install-html-am + +install-html-am: + +install-info: install-info-am + +install-info-am: + +install-man: + +install-pdf: install-pdf-am + +install-pdf-am: + +install-ps: install-ps-am + +install-ps-am: + +installcheck-am: + +maintainer-clean: maintainer-clean-am + -rm -f ./$(DEPDIR)/omclickhouse_la-omclickhouse.Plo + -rm -f Makefile +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-pkglibLTLIBRARIES + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \ + clean-generic clean-libtool clean-pkglibLTLIBRARIES \ + cscopelist-am ctags ctags-am distclean distclean-compile \ + distclean-generic distclean-libtool distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omclickhouse/omclickhouse.c b/plugins/omclickhouse/omclickhouse.c new file mode 100644 index 0000000..2c67e5e --- /dev/null +++ b/plugins/omclickhouse/omclickhouse.c @@ -0,0 +1,1032 @@ +/* omclickhouse.c + * This is the https://clickhouse.yandex/ output module. + * + * Copyright 2018 Pascal Withopf and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <memory.h> +#include <string.h> +#include <curl/curl.h> +#include <curl/easy.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <time.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#if defined(__FreeBSD__) +#include <unistd.h> +#endif +#include <json.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "statsobj.h" +#include "cfsysline.h" +#include "unicode-helper.h" +#include "obj-types.h" +#include "ratelimit.h" +#include "ruleset.h" + +#ifndef O_LARGEFILE +# define O_LARGEFILE 0 +#endif + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omclickhouse") + +/* internal structures */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(statsobj) +DEFobjCurrIf(prop) +DEFobjCurrIf(ruleset) + +statsobj_t *indexStats; +STATSCOUNTER_DEF(indexSubmit, mutIndexSubmit) +STATSCOUNTER_DEF(indexHTTPFail, mutIndexHTTPFail) +STATSCOUNTER_DEF(indexHTTPReqFail, mutIndexHTTPReqFail) +STATSCOUNTER_DEF(indexFail, mutIndexFail) +STATSCOUNTER_DEF(indexSuccess, mutIndexSuccess) + + + +typedef struct curl_slist HEADER; +typedef struct instanceConf_s { + uchar *serverBaseUrl; + int port; + uchar *user; + uchar *pwd; + long healthCheckTimeout; + long timeout; + uchar *authBuf; + uchar *tplName; + sbool useHttps; + sbool allowUnsignedCerts; + sbool skipVerifyHost; + int fdErrFile; + uchar *errorFile; + sbool bulkmode; + size_t maxbytes; + uchar *caCertFile; + uchar *myCertFile; + uchar *myPrivKeyFile; + struct instanceConf_s *next; +} instanceData; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + instanceConf_t *root, *tail; +}; +static modConfData_t *loadModConf = NULL; /* modConf ptr to use for the current load process */ + +typedef struct wrkrInstanceData { + PTR_ASSERT_DEF + instanceData *pData; + CURL *curlPostHandle; /* libcurl session handle for posting data to the server */ + HEADER *curlHeader; /* json POST request info */ + CURL *curlCheckConnHandle; /* libcurl session handle for checking the server connection */ + int replyLen; + char *reply; + uchar *restURL; + struct { + es_str_t *data; + int nmemb; /* number of messages in batch (for statistics counting) */ + } batch; + sbool insertErrorSent; /* needed for insert error message */ +} wrkrInstanceData_t; + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "server", eCmdHdlrGetWord, 0 }, + { "port", eCmdHdlrInt, 0 }, + { "user", eCmdHdlrGetWord, 0 }, + { "pwd", eCmdHdlrGetWord, 0 }, + { "healthchecktimeout", eCmdHdlrInt, 0 }, + { "timeout", eCmdHdlrInt, 0 }, + { "template", eCmdHdlrGetWord, 0 }, + { "usehttps", eCmdHdlrBinary, 0 }, + { "allowunsignedcerts", eCmdHdlrBinary, 0 }, + { "skipverifyhost", eCmdHdlrBinary, 0 }, + { "errorfile", eCmdHdlrGetWord, 0 }, + { "bulkmode", eCmdHdlrBinary, 0 }, + { "maxbytes", eCmdHdlrSize, 0 }, + { "tls.cacert", eCmdHdlrString, 0 }, + { "tls.mycert", eCmdHdlrString, 0 }, + { "tls.myprivkey", eCmdHdlrString, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +static rsRetVal curlSetup(wrkrInstanceData_t *pWrkrData); + +BEGINcreateInstance +CODESTARTcreateInstance + pData->fdErrFile = -1; + pData->caCertFile = NULL; + pData->myCertFile = NULL; + pData->myPrivKeyFile = NULL; +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pWrkrData->curlHeader = NULL; + pWrkrData->curlPostHandle = NULL; + pWrkrData->curlCheckConnHandle = NULL; + pWrkrData->restURL = NULL; + if(pData->bulkmode) { + if((pWrkrData->batch.data = es_newStr(1024)) == NULL) { + LogError(0, RS_RET_OUT_OF_MEMORY, + "omclickhouse: error creating batch string " + "turned off bulk mode\n"); + pData->bulkmode = 0; /* at least it works */ + } + } + pWrkrData->insertErrorSent = 0; + + iRet = curlSetup(pWrkrData); +ENDcreateWrkrInstance + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->serverBaseUrl); + free(pData->user); + free(pData->pwd); + free(pData->authBuf); + if(pData->fdErrFile != -1) + close(pData->fdErrFile); + free(pData->errorFile); + free(pData->tplName); + free(pData->caCertFile); + free(pData->myCertFile); + free(pData->myPrivKeyFile); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + if(pWrkrData->curlHeader != NULL) { + curl_slist_free_all(pWrkrData->curlHeader); + pWrkrData->curlHeader = NULL; + } + if(pWrkrData->curlCheckConnHandle != NULL) { + curl_easy_cleanup(pWrkrData->curlCheckConnHandle); + pWrkrData->curlCheckConnHandle = NULL; + } + if(pWrkrData->curlPostHandle != NULL) { + curl_easy_cleanup(pWrkrData->curlPostHandle); + pWrkrData->curlPostHandle = NULL; + } + if (pWrkrData->restURL != NULL) { + free(pWrkrData->restURL); + pWrkrData->restURL = NULL; + } + es_deleteStr(pWrkrData->batch.data); +ENDfreeWrkrInstance + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + dbgprintf("omclickhouse\n"); + dbgprintf("\tserver='%s'\n", pData->serverBaseUrl); + dbgprintf("\tport='%d'\n", pData->port); + dbgprintf("\tuser='%s'\n", pData->user); + dbgprintf("\tpwd='%s'\n", pData->pwd); + dbgprintf("\thealthCheckTimeout=%lu\n", pData->healthCheckTimeout); + dbgprintf("\ttimeout=%lu\n", pData->timeout); + dbgprintf("\ttemplate='%s'\n", pData->tplName); + dbgprintf("\tusehttps='%d'\n", pData->useHttps); + dbgprintf("\tallowunsignedcerts='%d'\n", pData->allowUnsignedCerts); + dbgprintf("\tskipverifyhost='%d'\n", pData->skipVerifyHost); + dbgprintf("\terrorFile='%s'\n", pData->errorFile); + dbgprintf("\tbulkmode='%d'\n", pData->bulkmode); + dbgprintf("\tmaxbytes='%zu'\n", pData->maxbytes); + dbgprintf("\ttls.cacert='%s'\n", pData->caCertFile); + dbgprintf("\ttls.mycert='%s'\n", pData->myCertFile); + dbgprintf("\ttls.myprivkey='%s'\n", pData->myPrivKeyFile); +ENDdbgPrintInstInfo + + +/* checks if connection to clickhouse can be established + */ +static rsRetVal ATTR_NONNULL() +checkConn(wrkrInstanceData_t *const pWrkrData) +{ + CURL *curl; + CURLcode res; + char errbuf[CURL_ERROR_SIZE] = ""; + const char* healthCheckMessage ="SELECT 1"; + DEFiRet; + + pWrkrData->reply = NULL; + pWrkrData->replyLen = 0; + curl = pWrkrData->curlCheckConnHandle; + + + curl_easy_setopt(curl, CURLOPT_URL, pWrkrData->restURL); + curl_easy_setopt(curl, CURLOPT_POSTFIELDS, healthCheckMessage); + curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, strlen(healthCheckMessage)); + curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errbuf); + res = curl_easy_perform(curl); + + if (res == CURLE_OK) { + DBGPRINTF("omclickhouse: checkConn completed with success\n"); + ABORT_FINALIZE(RS_RET_OK); + } + + DBGPRINTF("omclickhouse: checkConn failed: %s\n", + curl_easy_strerror(res)); + + LogMsg(0, RS_RET_SUSPENDED, LOG_WARNING, + "omclickhouse: checkConn failed."); + ABORT_FINALIZE(RS_RET_SUSPENDED); + +finalize_it: + free(pWrkrData->reply); + pWrkrData->reply = NULL; /* don't leave dangling pointer */ + RETiRet; +} + + +BEGINtryResume +CODESTARTtryResume + dbgprintf("omclickhouse: tryResume called\n"); + iRet = checkConn(pWrkrData); +ENDtryResume + + +/* + * Dumps entire bulk request and response in error log + */ +static rsRetVal +getDataErrorDefault(wrkrInstanceData_t *pWrkrData, char *reply, uchar *reqmsg, char **rendered) +{ + DEFiRet; + fjson_object *req=NULL; + fjson_object *errRoot=NULL; + + if((req=fjson_object_new_object()) == NULL) ABORT_FINALIZE(RS_RET_ERR); + fjson_object_object_add(req, "url", fjson_object_new_string((char*)pWrkrData->restURL)); + fjson_object_object_add(req, "postdata", fjson_object_new_string((char*)reqmsg)); + + if((errRoot=fjson_object_new_object()) == NULL) ABORT_FINALIZE(RS_RET_ERR); + fjson_object_object_add(errRoot, "request", req); + fjson_object_object_add(errRoot, "reply", fjson_object_new_string(reply)); + *rendered = strdup((char*)fjson_object_to_json_string(errRoot)); + + req=NULL; + fjson_object_put(errRoot); + + finalize_it: + fjson_object_put(req); + RETiRet; +} + + +/* write data error request/replies to separate error file + * Note: we open the file but never close it before exit. If it + * needs to be closed, HUP must be sent. + */ +static rsRetVal ATTR_NONNULL() +writeDataError(wrkrInstanceData_t *const pWrkrData, uchar *const reqmsg) +{ + DEFiRet; + instanceData *pData = pWrkrData->pData; + char *rendered = pWrkrData->reply; + size_t toWrite; + ssize_t wrRet; + + if(pData->errorFile == NULL) { + dbgprintf("omclickhouse: no local error logger defined - " + "ignoring ClickHouse error information\n"); + FINALIZE; + } + + + if(pData->fdErrFile == -1) { + pData->fdErrFile = open((char*)pData->errorFile, + O_WRONLY|O_CREAT|O_APPEND|O_LARGEFILE|O_CLOEXEC, + S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP); + if(pData->fdErrFile == -1) { + LogError(errno, RS_RET_ERR, "omclickhouse: error opening error file %s", + pData->errorFile); + ABORT_FINALIZE(RS_RET_ERR); + } + } + + if(getDataErrorDefault(pWrkrData, pWrkrData->reply, reqmsg, &rendered) != RS_RET_OK) { + ABORT_FINALIZE(RS_RET_ERR); + } + + /* we do not do real error-handling on the err file, as this finally complicates + * things way to much. + */ + dbgprintf("omclickhouse: message sent: '%s'\n", reqmsg); + dbgprintf("omclickhouse: error record: '%s'\n", rendered); + toWrite = strlen(rendered) + 1; + /* Note: we overwrite the '\0' terminator with '\n' -- so we avoid + * caling malloc() -- write() does NOT need '\0'! + */ + rendered[toWrite-1] = '\n'; /* NO LONGER A STRING! */ + wrRet = write(pData->fdErrFile, rendered, toWrite); + if(wrRet != (ssize_t) toWrite) { + LogError(errno, RS_RET_IO_ERROR, + "omclickhouse: error writing error file %s, write returned %lld", + pData->errorFile, (long long) wrRet); + } + +finalize_it: + RETiRet; +} + + +static rsRetVal +checkResult(wrkrInstanceData_t *pWrkrData, uchar *reqmsg) +{ + DEFiRet; + + if((strstr(pWrkrData->reply, " = DB::Exception" ) != NULL) + || (strstr(pWrkrData->reply, "DB::NetException" ) != NULL) + || (strstr(pWrkrData->reply, "DB::ParsingException" ) != NULL)) { + dbgprintf("omclickhouse: action failed with error: %s\n", pWrkrData->reply); + iRet = RS_RET_DATAFAIL; + } + + if(iRet == RS_RET_DATAFAIL) { + STATSCOUNTER_INC(indexFail, mutIndexFail); + writeDataError(pWrkrData, reqmsg); + iRet = RS_RET_OK; /* we have handled the problem! */ + } + + + if(iRet != RS_RET_OK) { + STATSCOUNTER_INC(indexFail, mutIndexFail); + } + RETiRet; +} + +static rsRetVal ATTR_NONNULL(1) +setPostURL(wrkrInstanceData_t *const pWrkrData) +{ + char* baseUrl; + es_str_t *url; + DEFiRet; + instanceData *const pData = pWrkrData->pData; + + baseUrl = (char*)pData->serverBaseUrl; + url = es_newStrFromCStr(baseUrl, strlen(baseUrl)); + if (url == NULL) { + LogError(0, RS_RET_OUT_OF_MEMORY, + "omclickhouse: error allocating new estr for POST url."); + ABORT_FINALIZE(RS_RET_ERR); + } + + if(pWrkrData->restURL != NULL) + free(pWrkrData->restURL); + + pWrkrData->restURL = (uchar*)es_str2cstr(url, NULL); + curl_easy_setopt(pWrkrData->curlPostHandle, CURLOPT_URL, pWrkrData->restURL); + dbgprintf("omclickhouse: using REST URL: '%s'\n", pWrkrData->restURL); + +finalize_it: + if (url != NULL) + es_deleteStr(url); + RETiRet; +} + + +/* this method computes the next data set to be added to the batch + * returns the expected size of adding the next message into the + * batched request to clickhouse + */ +static size_t +computeBulkMessage(const wrkrInstanceData_t *const pWrkrData, + const uchar *const message, char **newMessage) +{ + size_t r = 0; + char *v; + if (pWrkrData->batch.nmemb != 0 + && (v = strstr((const char *)message, "VALUES")) != NULL + && (v = strchr(v, '(')) != NULL + ) { + *newMessage = v; + r = strlen(*newMessage); + } else { + *newMessage = (char*)message; + r = strlen(*newMessage); + } + dbgprintf("omclickhouse: computeBulkMessage: new message part: %s\n", *newMessage); + + return r; +} + + +/* This method builds the batch, that will be submitted. + */ +static rsRetVal +buildBatch(wrkrInstanceData_t *pWrkrData, char *message) +{ + DEFiRet; + int length = strlen(message); + int r; + + r = es_addBuf(&pWrkrData->batch.data, message, length); + if(r != 0) { + LogError(0, RS_RET_ERR, "omclickhouse: growing batch failed with code %d", r); + ABORT_FINALIZE(RS_RET_ERR); + } + ++pWrkrData->batch.nmemb; + iRet = RS_RET_OK; + +finalize_it: + RETiRet; +} + + +static void ATTR_NONNULL() +initializeBatch(wrkrInstanceData_t *pWrkrData) +{ + es_emptyStr(pWrkrData->batch.data); + pWrkrData->batch.nmemb = 0; +} + + +static rsRetVal ATTR_NONNULL(1, 2) +curlPost(wrkrInstanceData_t *pWrkrData, uchar *message, int msglen, const int nmsgs) +{ + CURLcode code; + CURL *const curl = pWrkrData->curlPostHandle; + char errbuf[CURL_ERROR_SIZE] = ""; + DEFiRet; + + if(!strstr((char*)message, "INSERT INTO") && !pWrkrData->insertErrorSent) { + indexHTTPFail += nmsgs; + LogError(0, RS_RET_ERR, "omclickhouse: Message is no Insert query: " + "Message suspended: %s", (char*)message); + pWrkrData->insertErrorSent = 1; + ABORT_FINALIZE(RS_RET_ERR); + } + + pWrkrData->reply = NULL; + pWrkrData->replyLen = 0; + + CHKiRet(setPostURL(pWrkrData)); + + curl_easy_setopt(curl, CURLOPT_POSTFIELDS, (char *)message); + curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, msglen); + curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errbuf); + code = curl_easy_perform(curl); + dbgprintf("curl returned %lld\n", (long long) code); + if (code != CURLE_OK && code != CURLE_HTTP_RETURNED_ERROR) { + STATSCOUNTER_INC(indexHTTPReqFail, mutIndexHTTPReqFail); + indexHTTPFail += nmsgs; + LogError(0, RS_RET_SUSPENDED, + "omclickhouse: we are suspending ourselfs due " + "to server failure %lld: %s", (long long) code, errbuf); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + if(pWrkrData->reply == NULL) { + dbgprintf("omclickhouse: pWrkrData reply==NULL, replyLen = '%d'\n", + pWrkrData->replyLen); + STATSCOUNTER_INC(indexSuccess, mutIndexSuccess); + } else { + dbgprintf("omclickhouse: pWrkrData replyLen = '%d'\n", pWrkrData->replyLen); + if(pWrkrData->replyLen > 0) { + pWrkrData->reply[pWrkrData->replyLen] = '\0'; + /* Append 0 Byte if replyLen is above 0 - byte has been reserved in malloc */ + } + dbgprintf("omclickhouse: pWrkrData reply: '%s'\n", pWrkrData->reply); + CHKiRet(checkResult(pWrkrData, message)); + } + +finalize_it: + free(pWrkrData->reply); + pWrkrData->reply = NULL; /* don't leave dangling pointer */ + RETiRet; +} + + +static rsRetVal +submitBatch(wrkrInstanceData_t *pWrkrData) +{ + char *cstr = NULL; + DEFiRet; + + cstr = es_str2cstr(pWrkrData->batch.data, NULL); + dbgprintf("omclickhouse: submitBatch, batch: '%s'\n", cstr); + + CHKiRet(curlPost(pWrkrData, (uchar*) cstr, strlen(cstr), pWrkrData->batch.nmemb)); + +finalize_it: + free(cstr); + RETiRet; +} + + +BEGINbeginTransaction +CODESTARTbeginTransaction + if(!pWrkrData->pData->bulkmode) { + FINALIZE; + } + + initializeBatch(pWrkrData); +finalize_it: +ENDbeginTransaction + + +BEGINdoAction + char *batchPart = NULL; +CODESTARTdoAction + dbgprintf("CODESTARTdoAction: entered\n"); + STATSCOUNTER_INC(indexSubmit, mutIndexSubmit); + + if(pWrkrData->pData->bulkmode) { + const size_t nBytes = computeBulkMessage(pWrkrData, ppString[0], &batchPart); + dbgprintf("pascal: doAction: message: %s\n", batchPart); + + /* If max bytes is set and this next message will put us over the limit, + * submit the current buffer and reset */ + if(pWrkrData->pData->maxbytes > 0 + && es_strlen(pWrkrData->batch.data) + nBytes > pWrkrData->pData->maxbytes) { + + dbgprintf("omclickhouse: maxbytes limit reached, submitting partial " + "batch of %d elements.\n", pWrkrData->batch.nmemb); + CHKiRet(submitBatch(pWrkrData)); + initializeBatch(pWrkrData); + batchPart = (char*)ppString[0]; + } + + CHKiRet(buildBatch(pWrkrData, batchPart)); + + iRet = pWrkrData->batch.nmemb == 1 ? RS_RET_PREVIOUS_COMMITTED : RS_RET_DEFER_COMMIT; + } else { + CHKiRet(curlPost(pWrkrData, ppString[0], strlen((char*)ppString[0]), 1)); + } +finalize_it: +ENDdoAction + + +BEGINendTransaction +CODESTARTendTransaction +/* End Transaction only if batch data is not empty */ + if (pWrkrData->batch.data != NULL && pWrkrData->batch.nmemb > 0) { + CHKiRet(submitBatch(pWrkrData)); + } else { + dbgprintf("omclickhouse: endTransaction, pWrkrData->batch.data is NULL, " + "nothing to send. \n"); + } +finalize_it: +ENDendTransaction + +static void ATTR_NONNULL() +setInstParamDefaults(instanceData *const pData) +{ + pData->serverBaseUrl = NULL; + pData->port = 8123; + pData->user = NULL; + pData->pwd = NULL; + pData->healthCheckTimeout = 3500; + pData->timeout = 0; + pData->authBuf = NULL; + pData->tplName = NULL; + pData->useHttps = 1; + pData->allowUnsignedCerts = 1; + pData->skipVerifyHost = 0; + pData->errorFile = NULL; + pData->bulkmode = 1; + pData->maxbytes = 104857600; //100MB + pData->caCertFile = NULL; + pData->myCertFile = NULL; + pData->myPrivKeyFile = NULL; +} + +/* POST result string ... useful for debugging */ +static size_t +curlResult(void *ptr, size_t size, size_t nmemb, void *userdata) +{ + char *p = (char *)ptr; + wrkrInstanceData_t *pWrkrData = (wrkrInstanceData_t*) userdata; + char *buf; + size_t newlen; + newlen = pWrkrData->replyLen + size*nmemb; + if((buf = realloc(pWrkrData->reply, newlen + 1)) == NULL) { + LogError(errno, RS_RET_ERR, "omclickhouse: realloc failed in curlResult"); + return 0; /* abort due to failure */ + } + memcpy(buf+pWrkrData->replyLen, p, size*nmemb); + pWrkrData->replyLen = newlen; + pWrkrData->reply = buf; + return size*nmemb; +} + +static void ATTR_NONNULL() +curlSetupCommon(wrkrInstanceData_t *const pWrkrData, CURL *const handle) +{ + curl_easy_setopt(handle, CURLOPT_HTTPHEADER, pWrkrData->curlHeader); + curl_easy_setopt(handle, CURLOPT_NOSIGNAL, TRUE); + curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, curlResult); + curl_easy_setopt(handle, CURLOPT_WRITEDATA, pWrkrData); + if(pWrkrData->pData->allowUnsignedCerts) + curl_easy_setopt(handle, CURLOPT_SSL_VERIFYPEER, FALSE); + if(pWrkrData->pData->skipVerifyHost) + curl_easy_setopt(handle, CURLOPT_SSL_VERIFYHOST, FALSE); + if(pWrkrData->pData->authBuf != NULL) { + curl_easy_setopt(handle, CURLOPT_USERPWD, pWrkrData->pData->authBuf); + curl_easy_setopt(handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY); + } + + if(pWrkrData->pData->caCertFile) { + curl_easy_setopt(handle, CURLOPT_CAINFO, pWrkrData->pData->caCertFile); + } + if(pWrkrData->pData->myCertFile) { + curl_easy_setopt(handle, CURLOPT_SSLCERT, pWrkrData->pData->myCertFile); + } + if(pWrkrData->pData->myPrivKeyFile) { + curl_easy_setopt(handle, CURLOPT_SSLKEY, pWrkrData->pData->myPrivKeyFile); + } + /* uncomment for in-dept debuggung: + curl_easy_setopt(handle, CURLOPT_VERBOSE, TRUE); */ +} + + +static void ATTR_NONNULL() +curlCheckConnSetup(wrkrInstanceData_t *const pWrkrData) +{ + curlSetupCommon(pWrkrData, pWrkrData->curlCheckConnHandle); + curl_easy_setopt(pWrkrData->curlCheckConnHandle, + CURLOPT_TIMEOUT_MS, pWrkrData->pData->healthCheckTimeout); +} + + +static void ATTR_NONNULL(1) +curlPostSetup(wrkrInstanceData_t *const pWrkrData) +{ + curlSetupCommon(pWrkrData, pWrkrData->curlPostHandle); + curl_easy_setopt(pWrkrData->curlPostHandle, CURLOPT_POST, 1); + if(pWrkrData->pData->timeout) { + curl_easy_setopt(pWrkrData->curlPostHandle, + CURLOPT_TIMEOUT_MS, pWrkrData->pData->timeout); + } +} + +#define CONTENT_JSON "Content-Type: application/json; charset=utf-8" + +static rsRetVal ATTR_NONNULL() +curlSetup(wrkrInstanceData_t *const pWrkrData) +{ + DEFiRet; + pWrkrData->curlHeader = curl_slist_append(NULL, CONTENT_JSON); + CHKmalloc(pWrkrData->curlPostHandle = curl_easy_init()); + curlPostSetup(pWrkrData); + + CHKmalloc(pWrkrData->curlCheckConnHandle = curl_easy_init()); + curlCheckConnSetup(pWrkrData); + +finalize_it: + if(iRet != RS_RET_OK && pWrkrData->curlPostHandle != NULL) { + curl_easy_cleanup(pWrkrData->curlPostHandle); + pWrkrData->curlPostHandle = NULL; + } + RETiRet; +} + +static rsRetVal +computeAuthHeader(char* user, char* pwd, uchar** authBuf) +{ + DEFiRet; + int r; + + es_str_t* auth = es_newStr(1024); + if (auth == NULL) { + LogError(0, RS_RET_OUT_OF_MEMORY, + "omclickhouse: failed to allocate es_str auth for auth header construction"); + ABORT_FINALIZE(RS_RET_ERR); + } + + r = es_addBuf(&auth, user, strlen(user)); + if(r == 0) + r = es_addChar(&auth, ':'); + if(r == 0 && pwd != NULL) + r = es_addBuf(&auth, pwd, strlen(pwd)); + if(r == 0) + *authBuf = (uchar*) es_str2cstr(auth, NULL); + + if (r != 0 || *authBuf == NULL) { + LogError(0, RS_RET_ERR, "omclickhouse: failed to build auth header\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + +finalize_it: + if (auth != NULL) + es_deleteStr(auth); + RETiRet; +} + +/* Build basic URL part, which includes hostname, port, user, pwd as follows: + * http://user:pwd@hostname:port/ based on a server param + * Newly creates a cstr for this purpose. + */ +static rsRetVal +computeBaseUrl(const char* server, const int port, const sbool useHttps, instanceData *pData) +{ +# define SCHEME_HTTPS "https://" +# define SCHEME_HTTP "http://" + + char portBuf[64]; + int r = 0; + const char *host = server; + DEFiRet; + + assert(server[strlen(server)-1] != '/'); + + es_str_t *urlBuf = es_newStr(256); + if (urlBuf == NULL) { + LogError(0, RS_RET_OUT_OF_MEMORY, + "omclickhouse: failed to allocate es_str urlBuf in computeBaseUrl"); + ABORT_FINALIZE(RS_RET_ERR); + } + + /* Find where the hostname/ip of the server starts. If the scheme is not specified + in the uri, start the buffer with a scheme corresponding to the useHttps parameter. + */ + if(strcasestr(server, SCHEME_HTTP)) { + host = server + strlen(SCHEME_HTTP); + } else if(strcasestr(server, SCHEME_HTTPS)) { + host = server + strlen(SCHEME_HTTPS); + } else { + r = useHttps ? es_addBuf(&urlBuf, SCHEME_HTTPS, sizeof(SCHEME_HTTPS)-1) : + es_addBuf(&urlBuf, SCHEME_HTTP, sizeof(SCHEME_HTTP)-1); + } + if (r == 0) + r = es_addBuf(&urlBuf, (char *)server, strlen(server)); + if (r == 0 && !strchr(host, ':')) { + snprintf(portBuf, sizeof(portBuf), ":%d", port); + r = es_addBuf(&urlBuf, portBuf, strlen(portBuf)); + } + if (r == 0) + r = es_addChar(&urlBuf, '/'); + if (r == 0) + pData->serverBaseUrl = (uchar*) es_str2cstr(urlBuf, NULL); + + if (r != 0 || pData->serverBaseUrl == NULL) { + LogError(0, RS_RET_ERR, "omclickhouse: error occurred computing baseUrl from " + "server %s", server); + ABORT_FINALIZE(RS_RET_ERR); + } +finalize_it: + if (urlBuf) { + es_deleteStr(urlBuf); + } + RETiRet; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + uchar *server = NULL; + int i; + FILE *fp; + char errStr[1024]; +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "server")) { + server = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "port")) { + pData->port = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "user")) { + pData->user = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "pwd")) { + pData->pwd = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "healthchecktimeout")) { + pData->healthCheckTimeout = (long) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "timeout")) { + pData->timeout = (long) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "usehttps")) { + pData->useHttps = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "allowunsignedcerts")) { + pData->allowUnsignedCerts = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "skipverifyhost")) { + pData->skipVerifyHost = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "errorfile")) { + pData->errorFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "bulkmode")) { + pData->bulkmode = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "maxbytes")) { + pData->maxbytes = (size_t) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "tls.cacert")) { + pData->caCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->caCertFile, "r"); + if(fp == NULL) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: omclickhouse: 'tls.cacert' file %s couldn't be accessed: %s\n", + pData->caCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "tls.mycert")) { + pData->myCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->myCertFile, "r"); + if(fp == NULL) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: omclickhouse: 'tls.mycert' file %s couldn't be accessed: %s\n", + pData->myCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "tls.myprivkey")) { + pData->myPrivKeyFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->myPrivKeyFile, "r"); + if(fp == NULL) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: omclickhouse: 'tls.myprivkey' file %s couldn't be accessed: %s\n", + pData->myPrivKeyFile, errStr); + } else { + fclose(fp); + } + } else { + LogError(0, RS_RET_INTERNAL_ERROR, "omclickhouse: program error, " + "non-handled param '%s'", actpblk.descr[i].name); + } + } + + + if(pData->user == NULL && pData->pwd != NULL) { + LogMsg(0, RS_RET_OK, LOG_WARNING, "omclickhouse: No user was specified " + "but a password was given."); + } + + if(pData->user != NULL) + CHKiRet(computeAuthHeader((char*) pData->user, (char*) pData->pwd, &pData->authBuf)); + + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*)strdup((pData->tplName == NULL) ? + " StdClickHouseFmt" : (char*)pData->tplName), OMSR_RQD_TPL_OPT_SQL)); + + if(server != NULL) { + CHKiRet(computeBaseUrl((const char*)server, pData->port, pData->useHttps, pData)); + } else { + LogMsg(0, RS_RET_OK, LOG_WARNING, + "omclickhouse: No servers specified, using localhost"); + CHKiRet(computeBaseUrl("localhost", pData->port, pData->useHttps, + pData)); + } + + /* node created, let's add to list of instance configs for the module */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = pData; + } else { + loadModConf->tail->next = pData; + loadModConf->tail = pData; + } + +CODE_STD_FINALIZERnewActInst + free(server); + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->root = pModConf->tail = NULL; +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad + loadModConf = NULL; /* done loading */ +ENDendCnfLoad + + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINdoHUP +CODESTARTdoHUP + if(pData->fdErrFile != -1) { + close(pData->fdErrFile); + pData->fdErrFile = -1; + } +ENDdoHUP + + +BEGINmodExit +CODESTARTmodExit + curl_global_cleanup(); + statsobj.Destruct(&indexStats); + objRelease(statsobj, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); +ENDmodExit + +NO_LEGACY_CONF_parseSelectorAct + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_doHUP +CODEqueryEtryPt_TXIF_OMOD_QUERIES /* we support the transactional interface! */ +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + + if (curl_global_init(CURL_GLOBAL_ALL) != 0) { + LogError(0, RS_RET_OBJ_CREATION_FAILED, "CURL fail. -indexing disabled"); + ABORT_FINALIZE(RS_RET_OBJ_CREATION_FAILED); + } + + /* support statistics gathering */ + CHKiRet(statsobj.Construct(&indexStats)); + CHKiRet(statsobj.SetName(indexStats, (uchar *)"omclickhouse")); + CHKiRet(statsobj.SetOrigin(indexStats, (uchar *)"omclickhouse")); + STATSCOUNTER_INIT(indexSubmit, mutIndexSubmit); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"submitted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexSubmit)); + STATSCOUNTER_INIT(indexHTTPFail, mutIndexHTTPFail); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"failed.http", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexHTTPFail)); + STATSCOUNTER_INIT(indexHTTPReqFail, mutIndexHTTPReqFail); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"failed.httprequests", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexHTTPReqFail)); + STATSCOUNTER_INIT(indexFail, mutIndexFail); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"failed.clickhouse", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexFail)); + STATSCOUNTER_INIT(indexSuccess, mutIndexSuccess); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"response.success", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexSuccess)); + CHKiRet(statsobj.ConstructFinalize(indexStats)); + +ENDmodInit + +/* vi:set ai: + */ diff --git a/plugins/omdtls/Makefile.am b/plugins/omdtls/Makefile.am new file mode 100644 index 0000000..8451028 --- /dev/null +++ b/plugins/omdtls/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = omdtls.la +omdtls_la_DEPENDENCIES = ../../runtime/lmnsd_ossl.la +omdtls_la_SOURCES = omdtls.c +omdtls_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) $(OPENSSL_CFLAGS) +omdtls_la_LDFLAGS = -module -avoid-version +omdtls_la_LIBADD = $(OPENSSL_LIBS) ../../runtime/lmnsd_ossl.la diff --git a/plugins/omdtls/Makefile.in b/plugins/omdtls/Makefile.in new file mode 100644 index 0000000..6978ece --- /dev/null +++ b/plugins/omdtls/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omdtls/omdtls.c b/plugins/omdtls/omdtls.c new file mode 100644 index 0000000..c5ba167 --- /dev/null +++ b/plugins/omdtls/omdtls.c @@ -0,0 +1,853 @@ +/* omdtls.c + * The dtls output module, uses OpenSSL as library to implement DTLS. + * + * \author Andre Lorbach <alorbach@adiscon.com> + * + * Copyright (C) 2023 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> +#include <assert.h> +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <sys/uio.h> +#include <sys/queue.h> +#include <netdb.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <math.h> +#ifdef HAVE_SYS_STAT_H +# include <sys/stat.h> +#endif +#include <sys/time.h> +#include <time.h> + +// --- Include openssl headers as well +#include <openssl/ssl.h> +#include <openssl/x509v3.h> +#include <openssl/err.h> +#if OPENSSL_VERSION_NUMBER >= 0x30000000L && !defined(LIBRESSL_VERSION_NUMBER) +# include <openssl/bioerr.h> +#endif +#include <openssl/engine.h> +// --- + +// Include rsyslog headers +#include "rsyslog.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "glbl.h" +#include "errmsg.h" +#include "atomic.h" +#include "statsobj.h" +#include "unicode-helper.h" +#include "datetime.h" +#include "net_ossl.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omdtls") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(datetime) +DEFobjCurrIf(statsobj) +DEFobjCurrIf(net_ossl) + +statsobj_t *dtlsStats; +STATSCOUNTER_DEF(ctrDtlsSubmit, mutCtrDtlsSubmit); +STATSCOUNTER_DEF(ctrDtlsFail, mutCtrDtlsFail); + +#define DTLS_MAX_RCVBUF 8192 /* Maximum DTLS packet is 8192 bytes which fits into Jumbo Frames. If not enabled + * message fragmentation (Ethernet MTU of ~ 1500 bytes) can occur.*/ +#define SETUP_DTLS_NONE 0 +#define SETUP_DTLS_AUTOCLOSE 1 + +enum DTLSState { + DTLS_CONNECTED, + DTLS_CONNECTING, + DTLS_DISCONNECTED +}; + +/* Struct for module InstanceData */ +typedef struct _instanceData { + uchar *tplName; /* name of assigned template */ + + uchar *target; + uchar *port; + + uchar *tlscfgcmd; /* OpenSSL Config Command used to override any OpenSSL Settings */ + int bHaveSess; /* True if DTLS session is established */ + int CertVerifyDepth; /* Verify Depth for certificate chains */ + + /* OpenSSL and Config Cert vars inside net_ossl_t now */ + net_ossl_t *pNetOssl; /* OSSL shared Config and object vars are here */ + + uchar *statsName; + statsobj_t *stats; /* listener stats */ + STATSCOUNTER_DEF(ctrDtlsSubmit, mutCtrDtlsSubmit) + STATSCOUNTER_DEF(ctrDtlsFail, mutCtrDtlsFail); + + struct _instanceData *next; + struct _instanceData *prev; +} instanceData; + +/* Struct for module workerInstanceData */ +typedef struct wrkrInstanceData { + instanceData *pData; + + enum DTLSState ConnectState; /* DTLS Connection State Status */ + pthread_rwlock_t pnLock; + + // DTLS Helpers + struct sockaddr_in dtls_client_addr; /* local bind socket*/ + struct addrinfo* dtls_rcvr_addrinfo; /* remote receiver address */ + + int sockin; /* UDP Socket used to receive DTLS */ + int sockout; /* UDP Socket used to send DTLS */ + SSL *sslClient; /* DTSL (SSL) Client */ +} wrkrInstanceData_t; + +#define INST_STATSCOUNTER_INC(inst, ctr, mut) \ + do { \ + if (inst->stats) { STATSCOUNTER_INC(ctr, mut); } \ + } while(0); + +// QPID Proton Handler functions +static rsRetVal dtls_create_socket(wrkrInstanceData_t *const __restrict__ pWrkrData, int autoclose); +static rsRetVal dtls_init(wrkrInstanceData_t *pWrkrData); +static rsRetVal dtls_connect(wrkrInstanceData_t *pWrkrData); +static rsRetVal dtls_close(wrkrInstanceData_t *pWrkrData); +static rsRetVal dtls_send(wrkrInstanceData_t *pWrkrData, const actWrkrIParams_t *__restrict__ const pParam, + const int iMsg); + + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "target", eCmdHdlrGetWord, 0 }, + { "port", eCmdHdlrGetWord, 0 }, + { "tls.authmode", eCmdHdlrString, 0 }, + { "tls.cacert", eCmdHdlrString, 0 }, + { "tls.mycert", eCmdHdlrString, 0 }, + { "tls.myprivkey", eCmdHdlrString, 0 }, + { "tls.tlscfgcmd", eCmdHdlrString, 0 }, + { "template", eCmdHdlrGetWord, 0 }, + { "statsname", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "template", eCmdHdlrGetWord, 0 }, +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + instanceData *root, *tail; + uchar *tplName; /* default template */ +}; + +static modConfData_t *loadModConf = NULL; /* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL; /* modConf ptr to use for the current exec process */ + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars +ENDinitConfVars + +static rsRetVal +dtls_create_socket(wrkrInstanceData_t *const __restrict__ pWrkrData, int autoclose) +{ + DEFiRet; + DBGPRINTF("omdtls[%p]: dtls_create_socket ENTER\n", pWrkrData); + pthread_rwlock_wrlock(&pWrkrData->pnLock); + + if (autoclose == SETUP_DTLS_AUTOCLOSE) { + // Close Existing Connection + dtls_close(pWrkrData); + } + + // Init & Open Connection + CHKiRet(dtls_init(pWrkrData)); +finalize_it: + if (iRet != RS_RET_OK) { + /* Parameter Error's cannot be resumed, so we need to disable the action */ + if (iRet == RS_RET_PARAM_ERROR) { + iRet = RS_RET_DISABLE_ACTION; + LogError(0, iRet, "omdtls[%p]: action will be disabled due invalid " + "configuration parameters\n", pWrkrData); + } + } + pthread_rwlock_unlock(&pWrkrData->pnLock); + RETiRet; +} + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->tplName = NULL; +ENDbeginCnfLoad + +BEGINsetModCnf + int i; +CODESTARTsetModCnf + const struct cnfparamvals *const __restrict__ pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for omdtls:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "template")) { + loadModConf->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("omdtls: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +BEGINendCnfLoad +CODESTARTendCnfLoad + loadModConf = NULL; /* done loading */ +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnfPrePrivDrop + instanceData *inst; +CODESTARTactivateCnfPrePrivDrop + runModConf = pModConf; + DBGPRINTF("omdtls: activateCnfPrePrivDrop\n"); + + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + CHKiRet(net_ossl.osslCtxInit(inst->pNetOssl, DTLS_method())); + // Run openssl config commands in Context + CHKiRet(net_ossl_apply_tlscgfcmd(inst->pNetOssl, inst->tlscfgcmd)); + } +finalize_it: +ENDactivateCnfPrePrivDrop + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf + free(pModConf->tplName); +ENDfreeCnf + +BEGINcreateInstance +CODESTARTcreateInstance + DBGPRINTF("createInstance[%p]: ENTER\n", pData); + pData->tplName = NULL; + pData->target = NULL; + pData->port = NULL; + pData->tlscfgcmd = NULL; + pData->statsName = NULL; + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = pData; + } else { + loadModConf->tail->next = pData; + loadModConf->tail = pData; + } + + // Construct pNetOssl helper + CHKiRet(net_ossl.Construct(&pData->pNetOssl)); + pData->pNetOssl->authMode = OSSL_AUTH_CERTANON; +finalize_it: +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + DBGPRINTF("createWrkrInstance[%p]: ENTER\n", pWrkrData); + pWrkrData->ConnectState = DTLS_DISCONNECTED; + + CHKiRet(pthread_rwlock_init(&pWrkrData->pnLock, NULL)); +finalize_it: + DBGPRINTF("createWrkrInstance[%p] returned %d\n", pWrkrData, iRet); +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + DBGPRINTF("freeInstance[%p]: ENTER\n", pData); + + if (pData->stats) { + statsobj.Destruct(&pData->stats); + } + + // DeConstruct pNetOssl helper + net_ossl.Destruct(&pData->pNetOssl); + + /* Free other mem */ + free(pData->target); + free(pData->port); + free(pData->tlscfgcmd); + + free(pData->tplName); + free(pData->statsName); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + DBGPRINTF("freeWrkrInstance[%p]: ENTER\n", pWrkrData); + pthread_rwlock_wrlock(&pWrkrData->pnLock); + + // Close DTLS Connection + dtls_close(pWrkrData); + + pthread_rwlock_unlock(&pWrkrData->pnLock); + pthread_rwlock_destroy(&pWrkrData->pnLock); +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + +BEGINtryResume +CODESTARTtryResume + DBGPRINTF("omdtls[%p]: tryResume ENTER\n", pWrkrData); + if (pWrkrData->ConnectState == DTLS_DISCONNECTED) { + CHKiRet(dtls_create_socket(pWrkrData, SETUP_DTLS_AUTOCLOSE)); + } +finalize_it: + DBGPRINTF("omdtls[%p]: tryResume returned %d\n", pWrkrData, iRet); +ENDtryResume + +BEGINbeginTransaction +CODESTARTbeginTransaction + /* we have nothing to do to begin a transaction */ + DBGPRINTF("omdtls[%p]: beginTransaction ENTER\n", pWrkrData); + if (pWrkrData->ConnectState == DTLS_DISCONNECTED) { + CHKiRet(dtls_create_socket(pWrkrData, SETUP_DTLS_NONE)); + } +finalize_it: + RETiRet; +ENDbeginTransaction + +/* + * New Transaction action interface +*/ +BEGINcommitTransaction + unsigned i; + sbool bDone = 0; +CODESTARTcommitTransaction +#ifndef NDEBUG + DBGPRINTF("omdtls[%p]: commitTransaction [%d msgs] ENTER\n", pWrkrData, nParams); +#endif + do { + for(i = 0 ; i < nParams ; ++i) { + CHKiRet(dtls_send(pWrkrData, pParams, i)); + } + bDone = 1; + } while (bDone == 0); +finalize_it: + if(iRet != RS_RET_OK) { + DBGPRINTF("omdtls[%p]: commitTransaction failed with status %d\n", pWrkrData, iRet); + pWrkrData->ConnectState = DTLS_DISCONNECTED; + iRet = RS_RET_SUSPENDED; + } + DBGPRINTF("omdtls[%p]: commitTransaction [%d msgs] EXIT\n", pWrkrData, nParams); +ENDcommitTransaction + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; + int iNumTpls; + FILE *fp; + DBGPRINTF("newActInst: ENTER\n"); +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + // Create new instance and set default params + CHKiRet(createInstance(&pData)); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "target")) { + pData->target = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "port")) { + pData->port = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "statsname")) { + pData->statsName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "tls.authmode")) { + char* pszAuthMode = es_str2cstr(pvals[i].val.d.estr, NULL); + if(!strcasecmp(pszAuthMode, "fingerprint")) + pData->pNetOssl->authMode = OSSL_AUTH_CERTFINGERPRINT; + else if(!strcasecmp(pszAuthMode, "name")) + pData->pNetOssl->authMode = OSSL_AUTH_CERTNAME; + else if(!strcasecmp(pszAuthMode, "certvalid")) + pData->pNetOssl->authMode = OSSL_AUTH_CERTVALID; + else + pData->pNetOssl->authMode = OSSL_AUTH_CERTANON; + free(pszAuthMode); + } else if(!strcmp(actpblk.descr[i].name, "tls.cacert")) { + pData->pNetOssl->pszCAFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->pNetOssl->pszCAFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + pData->pNetOssl->pszCAFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "tls.mycert")) { + pData->pNetOssl->pszCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->pNetOssl->pszCertFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + pData->pNetOssl->pszCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "tls.myprivkey")) { + pData->pNetOssl->pszKeyFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->pNetOssl->pszKeyFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + pData->pNetOssl->pszKeyFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "tls.tlscfgcmd")) { + pData->tlscfgcmd = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + LogError(0, RS_RET_INTERNAL_ERROR, + "omdtls: program error, non-handled param '%s'\n", actpblk.descr[i].name); + } + } + + /* check if no port is set. If so, we use DEFAULT of 433 */ + if(pData->port == NULL) { + CHKmalloc(pData->port = (uchar *)strdup("443")); + } + + iNumTpls = 1; + CODE_STD_STRING_REQUESTnewActInst(iNumTpls); + + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*)strdup((pData->tplName == NULL) ? + "RSYSLOG_FileFormat" : (char*)pData->tplName), + OMSR_NO_RQD_TPL_OPTS)); + + if (pData->statsName) { + CHKiRet(statsobj.Construct(&pData->stats)); + CHKiRet(statsobj.SetName(pData->stats, (uchar *)pData->statsName)); + CHKiRet(statsobj.SetOrigin(pData->stats, (uchar *)"omdtls")); + + /* Track following stats */ + STATSCOUNTER_INIT(pData->ctrDtlsSubmit, pData->mutCtrDtlsSubmit); + CHKiRet(statsobj.AddCounter(pData->stats, (uchar *)"submitted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &pData->ctrDtlsSubmit)); + STATSCOUNTER_INIT(pData->ctrDtlsFail, pData->mutCtrDtlsFail); + CHKiRet(statsobj.AddCounter(pData->stats, (uchar *)"failures", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &pData->ctrDtlsFail)); + CHKiRet(statsobj.ConstructFinalize(pData->stats)); + } +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINmodExit +CODESTARTmodExit + DBGPRINTF("modExit: ENTER\n"); + statsobj.Destruct(&dtlsStats); + objRelease(net_ossl, LM_NET_OSSL_FILENAME); + objRelease(statsobj, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); + objRelease(glbl, CORE_COMPONENT); +ENDmodExit + +NO_LEGACY_CONF_parseSelectorAct +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMODTX_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + DBGPRINTF("modInit: ENTER\n"); +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + /* request objects we use */ + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(net_ossl, LM_NET_OSSL_FILENAME)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + + CHKiRet(statsobj.Construct(&dtlsStats)); + CHKiRet(statsobj.SetName(dtlsStats, (uchar *)"omdtls")); + CHKiRet(statsobj.SetOrigin(dtlsStats, (uchar*)"omdtls")); + STATSCOUNTER_INIT(ctrDtlsSubmit, mutCtrDtlsSubmit); + CHKiRet(statsobj.AddCounter(dtlsStats, (uchar *)"submitted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrDtlsSubmit)); + STATSCOUNTER_INIT(ctrDtlsFail, mutCtrDtlsFail); + CHKiRet(statsobj.AddCounter(dtlsStats, (uchar *)"failures", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrDtlsFail)); + + CHKiRet(statsobj.ConstructFinalize(dtlsStats)); +ENDmodInit + +/* +* Setup socket and establish virtual Connect on a SOCKET Level for DTLS +*/ +static rsRetVal +dtls_send(wrkrInstanceData_t *pWrkrData, const actWrkrIParams_t *__restrict__ const pParam, const int iMsg) +{ + DEFiRet; + int iErr, sslerr; + instanceData *const pData = (instanceData *const) pWrkrData->pData; + + // Get Msg String + const char* pszParamStr = (const char*)actParam(pParam, 1 /*pData->iNumTpls*/, iMsg, 0).param; + size_t tzParamStrLen = actParam(pParam, 1 /*pData->iNumTpls*/, iMsg, 0).lenStr; + DBGPRINTF("dtls_send[%p]: msg %d msg:'%.*s%s'\n", + pWrkrData, + iMsg, + (int)(tzParamStrLen > 0 ? (tzParamStrLen > 64 ? 64 : tzParamStrLen-1) : 0), + pszParamStr, + (tzParamStrLen > 64 ? "..." : "")); + + iErr = SSL_write(pWrkrData->sslClient, pszParamStr, tzParamStrLen); + if(iErr > 0) { + DBGPRINTF("dtls_send[%p]: Successfully send message '%s' with %ld bytes to %s:%s\n", + pWrkrData, pszParamStr, tzParamStrLen, pData->target, pData->port); + + // Increment Stats Counter + STATSCOUNTER_INC(ctrDtlsSubmit, mutCtrDtlsSubmit); + INST_STATSCOUNTER_INC(pData, pData->ctrDtlsSubmit, pData->mutCtrDtlsSubmit); + } else { + sslerr = SSL_get_error(pWrkrData->sslClient, iErr); + if (sslerr == SSL_ERROR_SYSCALL) { + dbgprintf("dtls_send[%p]: SSL_write failed with SSL_ERROR_SYSCALL(%s)" + " - Aborting Connection.\n", pWrkrData, strerror(errno)); + net_ossl_lastOpenSSLErrorMsg(pData->target, iErr, pWrkrData->sslClient, LOG_WARNING, + "omdtls", "SSL_write"); + ABORT_FINALIZE(RS_RET_ERR); + } else { + dbgprintf("dtls_send[%p]: SSL_write failed with ERROR [%d]: %s" + " - Aborting Connection.\n", pWrkrData, sslerr, ERR_error_string(sslerr, NULL)); + net_ossl_lastOpenSSLErrorMsg(pData->target, iErr, pWrkrData->sslClient, LOG_WARNING, + "omdtls", "SSL_write"); + ABORT_FINALIZE(RS_RET_ERR); + } + + // Increment Stats Counter + STATSCOUNTER_INC(ctrDtlsFail, mutCtrDtlsFail); + INST_STATSCOUNTER_INC(pData, pData->ctrDtlsFail, pData->mutCtrDtlsFail); + } +finalize_it: + DBGPRINTF("dtls_send[%p]: Exit with %d for %s:%s\n", pWrkrData, iRet, pData->target, pData->port); + if(iRet != RS_RET_OK) { + dtls_close(pWrkrData); + } + RETiRet; +} + +/* +* Setup socket and establish virtual Connect on a SOCKET Level for DTLS +*/ +static rsRetVal +dtls_connect(wrkrInstanceData_t *pWrkrData) { + DEFiRet; + int iErr; + instanceData *const pData = (instanceData *const) pWrkrData->pData; + BIO *bio_client; + const SSL_CIPHER *sslCipher; + + DBGPRINTF("dtls_connect[%p]: setup DTLS for %s:%s\n", pWrkrData, pData->target, pData->port); + pWrkrData->ConnectState = DTLS_CONNECTING; + + // Create SSL object + pWrkrData->sslClient = SSL_new(pData->pNetOssl->ctx); + if(!pWrkrData->sslClient) { + dbgprintf("dtls_connect[%p]: SSL_new failed failed\n", pWrkrData); + net_ossl_lastOpenSSLErrorMsg(pData->target, 0, pWrkrData->sslClient, LOG_WARNING, "omdtls", "SSL_new"); + ABORT_FINALIZE(RS_RET_ERR); + } + + // Set certifcate check callback + if (pData->pNetOssl->authMode != OSSL_AUTH_CERTANON) { + dbgprintf("dtls_connect[%p]: enable certificate checking (Mode=%d, VerifyDepth=%d)\n", + pWrkrData, pData->pNetOssl->authMode, pData->CertVerifyDepth); + /* Enable certificate valid checking */ + net_ossl_set_ssl_verify_callback(pWrkrData->sslClient, SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT); + if (pData->CertVerifyDepth != 0) { + SSL_set_verify_depth(pWrkrData->sslClient, pData->CertVerifyDepth); + } + } else { + dbgprintf("dtls_connect[%p]: disable certificate checking\n", pWrkrData); + net_ossl_set_ssl_verify_callback(pWrkrData->sslClient, SSL_VERIFY_NONE); + } + + /* Create BIO from socket array! */ + bio_client = BIO_new_dgram(pWrkrData->sockout, BIO_NOCLOSE); + if (!bio_client) { + net_ossl_lastOpenSSLErrorMsg(pData->target, 0, pWrkrData->sslClient, LOG_INFO, + "dtls_connect", "BIO_new_dgram"); + ABORT_FINALIZE(RS_RET_ERR); + } + BIO_ctrl(bio_client, BIO_CTRL_DGRAM_SET_CONNECTED, 0, &pWrkrData->dtls_client_addr); + SSL_set_bio(pWrkrData->sslClient, bio_client, bio_client); + + /* Set debug Callback for conn BIO as well! */ + net_ossl_set_bio_callback(bio_client); + + dbgprintf("dtls_connect[%p]: Starting DTLS session ...\n", pWrkrData); + /* Perform handshake */ + iErr = SSL_connect(pWrkrData->sslClient); + if (iErr <= 0) { + net_ossl_lastOpenSSLErrorMsg(pData->target, iErr, pWrkrData->sslClient, LOG_INFO, + "dtls_connect", "SSL_connect"); + ABORT_FINALIZE(RS_RET_ERR); + } + + // Print Cipher info + sslCipher = SSL_get_current_cipher(pWrkrData->sslClient); + dbgprintf("dtls_connect[%p]: Cipher Version: %s Name: %s\n", pWrkrData, + SSL_CIPHER_get_version(sslCipher), SSL_CIPHER_get_name(sslCipher)); + + if(Debug) { + // Print Peer Certificate info + X509 *cert = SSL_get_peer_certificate(pWrkrData->sslClient); + if (cert != NULL) { + char *line; + line = X509_NAME_oneline(X509_get_subject_name(cert), 0, 0); + dbgprintf("dtls_connect[%p]: Subject: %s\n", pWrkrData, line); + OPENSSL_free(line); + + line = X509_NAME_oneline(X509_get_issuer_name(cert), 0, 0); + dbgprintf("dtls_connect[%p]: Issuer: %s\n", pWrkrData, line); + OPENSSL_free(line); + X509_free(cert); + } else { + dbgprintf("dtls_connect[%p]: No certificates.\n", pWrkrData); + } + } + + /* Set reference in SSL obj */ + SSL_set_ex_data(pWrkrData->sslClient, 0, NULL); + SSL_set_ex_data(pWrkrData->sslClient, 1, NULL); + + /* Set and activate timeouts */ + struct timeval timeout; + timeout.tv_sec = 3; + timeout.tv_usec = 0; + BIO_ctrl(bio_client, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout); + + pWrkrData->ConnectState = DTLS_CONNECTED; +finalize_it: + DBGPRINTF("dtls_connect[%p]: Exit with %d for %s:%s\n", pWrkrData, iRet, pData->target, pData->port); + if(iRet != RS_RET_OK) { + pWrkrData->ConnectState = DTLS_DISCONNECTED; + } + RETiRet; +} + +/* +* Setup socket and establish virtual Connect on a SOCKET Level for DTLS +*/ +static rsRetVal +dtls_init(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + int iErr; + instanceData *const pData = (instanceData *const) pWrkrData->pData; + struct addrinfo *addrResolved = NULL; + struct addrinfo hints; + DBGPRINTF("dtls_init[%p]: setup for %s:%s\n", pWrkrData, pData->target, pData->port); + + // Close previous ressources if any left open + dtls_close(pWrkrData); + + // Setup receiving Socket for DTLS + if((pWrkrData->sockin = socket(AF_INET, SOCK_DGRAM, 0)) == -1) + return 1; + memset(&pWrkrData->dtls_client_addr, 0, sizeof(pWrkrData->dtls_client_addr)); + pWrkrData->dtls_client_addr.sin_family = AF_INET; + pWrkrData->dtls_client_addr.sin_port = htons(0); + pWrkrData->dtls_client_addr.sin_addr.s_addr = INADDR_ANY; + if (bind(pWrkrData->sockin, + (struct sockaddr*)&pWrkrData->dtls_client_addr, + sizeof(pWrkrData->dtls_client_addr)) < 0) { + LogError(0, RS_RET_SUSPENDED, "omdtls[%p]: dtls_init Unable to bind DTLS CLient socket with errno %d", + pWrkrData, errno); + ABORT_FINALIZE(RS_RET_COULD_NOT_BIND); + } + + // Resolve target address + memset(&hints, 0, sizeof(hints)); + /* port must be numeric, because config file syntax requires this */ + hints.ai_family = glbl.GetDefPFFamily(runModConf->pConf); + hints.ai_socktype = SOCK_DGRAM; + if((iErr = (getaddrinfo((char*)pData->target, (char*)pData->port, &hints, &addrResolved))) != 0) { + LogError(0, RS_RET_SUSPENDED, + "omdtls[%p]: could not get addrinfo for hostname '%s':'%s': %s", + pWrkrData, pData->target, pData->port, gai_strerror(iErr)); + ABORT_FINALIZE(RS_RET_ADDRESS_UNKNOWN); + } + pWrkrData->dtls_rcvr_addrinfo = addrResolved; + addrResolved = NULL; + + // Init Socket Connection (Which technically does not connect but prepares socket for DTLS) + DBGPRINTF("dtls_init[%p]: Init Session to %s:%s\n", pWrkrData, pData->target, pData->port); + + // Connect the UDP socket to the receiver's address + pWrkrData->sockout = socket(AF_INET, SOCK_DGRAM, 0); + if (connect(pWrkrData->sockout, + pWrkrData->dtls_rcvr_addrinfo->ai_addr, + pWrkrData->dtls_rcvr_addrinfo->ai_addrlen) < 0) { + LogError(0, RS_RET_SUSPENDED, + "dtls_init[%p]: Failed to connect to hostname '%s':'%s': %s", + pWrkrData, pData->target, pData->port, gai_strerror(iErr)); + ABORT_FINALIZE(RS_RET_ERR); + } + + // Socket Connect successfull, no continue with TLS + CHKiRet(dtls_connect(pWrkrData)); + + // We reached this position means we are ready to send! + pWrkrData->ConnectState = DTLS_CONNECTED; +finalize_it: + DBGPRINTF("dtls_init[%p]: doTryResume %s iRet %d\n", pWrkrData, pData->target, iRet); + if(addrResolved != NULL) { + freeaddrinfo(addrResolved); + } + if(iRet != RS_RET_OK) { + if(pWrkrData->dtls_rcvr_addrinfo != NULL) { + freeaddrinfo(pWrkrData->dtls_rcvr_addrinfo); + pWrkrData->dtls_rcvr_addrinfo = NULL; + } + iRet = RS_RET_SUSPENDED; + + // Force DTLS Disconnect State + dtls_close(pWrkrData); + // pWrkrData->ConnectState = DTLS_DISCONNECTED; + } + RETiRet; +} + +static rsRetVal +dtls_close(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + int iErr; + instanceData *const pData = (instanceData *const) pWrkrData->pData; + if (pWrkrData->ConnectState == DTLS_CONNECTED) { + DBGPRINTF("dtls_close[%p]: close session for %s:%s\n", pWrkrData, pData->target, pData->port); + if ( pWrkrData->sslClient != NULL && + pWrkrData->ConnectState == DTLS_CONNECTED) { + iErr = SSL_shutdown(pWrkrData->sslClient); + if (iErr <= 0){ + /* Shutdown not finished, call SSL_read to do a bidirectional shutdown, see doc: + * https://www.openssl.org/docs/man1.1.1/man3/SSL_shutdown.html + * We do a single SSL_read which should be fine for protocol handling. + * No data is to be expected from the receiver side. + */ + char rcvBuf[DTLS_MAX_RCVBUF]; + SSL_read(pWrkrData->sslClient, rcvBuf, DTLS_MAX_RCVBUF); + } + SSL_free(pWrkrData->sslClient); + pWrkrData->sslClient = NULL; + } + } + + // Close Sockets + if ( pWrkrData->sockout != 0) { + close(pWrkrData->sockout); + pWrkrData->sockout = 0; + } + if ( pWrkrData->sockin != 0) { + close(pWrkrData->sockin); + pWrkrData->sockin = 0; + } + + // Free Memory + if(pWrkrData->dtls_rcvr_addrinfo != NULL) { + freeaddrinfo(pWrkrData->dtls_rcvr_addrinfo); + pWrkrData->dtls_rcvr_addrinfo = NULL; + } + + // Reset Helpers + pWrkrData->ConnectState = DTLS_DISCONNECTED; +FINALIZE; +finalize_it: + RETiRet; +} diff --git a/plugins/omelasticsearch/Makefile.am b/plugins/omelasticsearch/Makefile.am new file mode 100644 index 0000000..ddaa59a --- /dev/null +++ b/plugins/omelasticsearch/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = omelasticsearch.la + +omelasticsearch_la_SOURCES = omelasticsearch.c +omelasticsearch_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) $(CURL_CFLAGS) +omelasticsearch_la_LDFLAGS = -module -avoid-version +omelasticsearch_la_LIBADD = $(CURL_LIBS) $(LIBM) + +EXTRA_DIST = diff --git a/plugins/omelasticsearch/Makefile.in b/plugins/omelasticsearch/Makefile.in new file mode 100644 index 0000000..e329e68 --- /dev/null +++ b/plugins/omelasticsearch/Makefile.in @@ -0,0 +1,801 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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b/plugins/omelasticsearch/README @@ -0,0 +1,21 @@ +How to access ElasticSearch on local machine (for testing): +=========================================================== +see: https://github.com/mobz/elasticsearch-head + +How to produce an error: +======================== +It's quite easy to get 400, if you put a wrong mapping to your +index. That would be easy to reproduce in "normal" omelasticsearch usage +conditions, by only altering the ES configuration: + +1. Make your index first. Let's call it "testindex": +$ curl -XPUT localhost:9200/testindex/ + +2. Put your mapping for a search type called "mytype", where you specify +that date property should be an integer: +$ curl -XPUT localhost:9200/testindex/mytype/_mapping -d '{"mytype":{"properties": {"timegenerated":{"type":"integer"}}}}' + +3. Now try to insert something where date is not an integer: +$ curl -XPOST localhost:9200/testindex/mytype/ -d '{"timegenerated":"bla"}' +{"error":"MapperParsingException[Failed to parse [date]]; nested: NumberFormatException[For input string: \"bla\"]; ","status":400} + diff --git a/plugins/omelasticsearch/omelasticsearch.c b/plugins/omelasticsearch/omelasticsearch.c new file mode 100644 index 0000000..b297a92 --- /dev/null +++ b/plugins/omelasticsearch/omelasticsearch.c @@ -0,0 +1,2319 @@ +/* omelasticsearch.c + * This is the http://www.elasticsearch.org/ output module. + * + * NOTE: read comments in module-template.h for more specifics! + * + * Copyright 2011 Nathan Scott. + * Copyright 2009-2022 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <memory.h> +#include <string.h> +#include <curl/curl.h> +#include <curl/easy.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <time.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#if defined(__FreeBSD__) +#include <unistd.h> +#endif +#include <json.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "statsobj.h" +#include "cfsysline.h" +#include "unicode-helper.h" +#include "obj-types.h" +#include "ratelimit.h" +#include "ruleset.h" + +#ifndef O_LARGEFILE +# define O_LARGEFILE 0 +#endif + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omelasticsearch") + +/* internal structures */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(statsobj) +DEFobjCurrIf(prop) +DEFobjCurrIf(ruleset) + +statsobj_t *indexStats; +STATSCOUNTER_DEF(indexSubmit, mutIndexSubmit) +STATSCOUNTER_DEF(indexHTTPFail, mutIndexHTTPFail) +STATSCOUNTER_DEF(indexHTTPReqFail, mutIndexHTTPReqFail) +STATSCOUNTER_DEF(checkConnFail, mutCheckConnFail) +STATSCOUNTER_DEF(indexESFail, mutIndexESFail) +STATSCOUNTER_DEF(indexSuccess, mutIndexSuccess) +STATSCOUNTER_DEF(indexBadResponse, mutIndexBadResponse) +STATSCOUNTER_DEF(indexDuplicate, mutIndexDuplicate) +STATSCOUNTER_DEF(indexBadArgument, mutIndexBadArgument) +STATSCOUNTER_DEF(indexBulkRejection, mutIndexBulkRejection) +STATSCOUNTER_DEF(indexOtherResponse, mutIndexOtherResponse) +STATSCOUNTER_DEF(rebinds, mutRebinds) + +static prop_t *pInputName = NULL; + +# define META_STRT "{\"index\":{\"_index\": \"" +# define META_STRT_CREATE "{\"create\":{" /* \"_index\": \" */ +# define META_IX "\"_index\": \"" +# define META_TYPE "\",\"_type\":\"" +# define META_PIPELINE "\",\"pipeline\":\"" +# define META_PARENT "\",\"_parent\":\"" +# define META_ID "\", \"_id\":\"" +# define META_END "\"}}\n" +# define META_END_NOQUOTE " }}\n" + +typedef enum { + ES_WRITE_INDEX, + ES_WRITE_CREATE, + ES_WRITE_UPDATE, /* not supported */ + ES_WRITE_UPSERT /* not supported */ +} es_write_ops_t; + +#define WRKR_DATA_TYPE_ES 0xBADF0001 + +#define DEFAULT_REBIND_INTERVAL -1 + +/* REST API for elasticsearch hits this URL: + * http://<hostName>:<restPort>/<searchIndex>/<searchType> + */ +/* bulk API uses /_bulk */ +typedef struct curl_slist HEADER; +typedef struct instanceConf_s { + int defaultPort; + int fdErrFile; /* error file fd or -1 if not open */ + pthread_mutex_t mutErrFile; + uchar **serverBaseUrls; + int numServers; + long healthCheckTimeout; + long indexTimeout; + uchar *uid; + uchar *pwd; + uchar *authBuf; + uchar *searchIndex; + uchar *searchType; + uchar *pipelineName; + sbool skipPipelineIfEmpty; + uchar *parent; + uchar *tplName; + uchar *timeout; + uchar *bulkId; + uchar *errorFile; + int esVersion; + sbool errorOnly; + sbool interleaved; + sbool dynSrchIdx; + sbool dynSrchType; + sbool dynParent; + sbool dynBulkId; + sbool dynPipelineName; + sbool bulkmode; + size_t maxbytes; + sbool useHttps; + sbool allowUnsignedCerts; + sbool skipVerifyHost; + uchar *caCertFile; + uchar *myCertFile; + uchar *myPrivKeyFile; + es_write_ops_t writeOperation; + sbool retryFailures; + unsigned int ratelimitInterval; + unsigned int ratelimitBurst; + /* for retries */ + ratelimit_t *ratelimiter; + uchar *retryRulesetName; + ruleset_t *retryRuleset; + int rebindInterval; + struct instanceConf_s *next; +} instanceData; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + instanceConf_t *root, *tail; +}; +static modConfData_t *loadModConf = NULL; /* modConf ptr to use for the current load process */ + +typedef struct wrkrInstanceData { + PTR_ASSERT_DEF + instanceData *pData; + int serverIndex; + int replyLen; + size_t replyBufLen; + char *reply; + CURL *curlCheckConnHandle; /* libcurl session handle for checking the server connection */ + CURL *curlPostHandle; /* libcurl session handle for posting data to the server */ + HEADER *curlHeader; /* json POST request info */ + uchar *restURL; /* last used URL for error reporting */ + struct { + es_str_t *data; + int nmemb; /* number of messages in batch (for statistics counting) */ + uchar *currTpl1; + uchar *currTpl2; + } batch; + int nOperations; /* counter used with rebindInterval */ +} wrkrInstanceData_t; + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "server", eCmdHdlrArray, 0 }, + { "serverport", eCmdHdlrInt, 0 }, + { "healthchecktimeout", eCmdHdlrInt, 0 }, + { "indextimeout", eCmdHdlrInt, 0 }, + { "uid", eCmdHdlrGetWord, 0 }, + { "pwd", eCmdHdlrGetWord, 0 }, + { "searchindex", eCmdHdlrGetWord, 0 }, + { "searchtype", eCmdHdlrGetWord, 0 }, + { "pipelinename", eCmdHdlrGetWord, 0 }, + { "skippipelineifempty", eCmdHdlrBinary, 0 }, + { "parent", eCmdHdlrGetWord, 0 }, + { "dynsearchindex", eCmdHdlrBinary, 0 }, + { "dynsearchtype", eCmdHdlrBinary, 0 }, + { "dynparent", eCmdHdlrBinary, 0 }, + { "bulkmode", eCmdHdlrBinary, 0 }, + { "maxbytes", eCmdHdlrSize, 0 }, + { "asyncrepl", eCmdHdlrGoneAway, 0 }, + { "usehttps", eCmdHdlrBinary, 0 }, + { "timeout", eCmdHdlrGetWord, 0 }, + { "errorfile", eCmdHdlrGetWord, 0 }, + { "erroronly", eCmdHdlrBinary, 0 }, + { "interleaved", eCmdHdlrBinary, 0 }, + { "template", eCmdHdlrGetWord, 0 }, + { "dynbulkid", eCmdHdlrBinary, 0 }, + { "dynpipelinename", eCmdHdlrBinary, 0 }, + { "bulkid", eCmdHdlrGetWord, 0 }, + { "allowunsignedcerts", eCmdHdlrBinary, 0 }, + { "skipverifyhost", eCmdHdlrBinary, 0 }, + { "tls.cacert", eCmdHdlrString, 0 }, + { "tls.mycert", eCmdHdlrString, 0 }, + { "tls.myprivkey", eCmdHdlrString, 0 }, + { "writeoperation", eCmdHdlrGetWord, 0 }, + { "retryfailures", eCmdHdlrBinary, 0 }, + { "ratelimit.interval", eCmdHdlrInt, 0 }, + { "ratelimit.burst", eCmdHdlrInt, 0 }, + { "retryruleset", eCmdHdlrString, 0 }, + { "rebindinterval", eCmdHdlrInt, 0 }, + { "esversion.major", eCmdHdlrPositiveInt, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +static rsRetVal curlSetup(wrkrInstanceData_t *pWrkrData); + +BEGINcreateInstance +CODESTARTcreateInstance + int r; + pData->fdErrFile = -1; + if((r = pthread_mutex_init(&pData->mutErrFile, NULL)) != 0) { + LogError(r, RS_RET_ERR, "omelasticsearch: cannot create " + "error file mutex, failing this action"); + ABORT_FINALIZE(RS_RET_ERR); + } + pData->caCertFile = NULL; + pData->myCertFile = NULL; + pData->myPrivKeyFile = NULL; + pData->ratelimiter = NULL; + pData->retryRulesetName = NULL; + pData->retryRuleset = NULL; + pData->rebindInterval = DEFAULT_REBIND_INTERVAL; + pData->esVersion = 0; +finalize_it: +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + PTR_ASSERT_SET_TYPE(pWrkrData, WRKR_DATA_TYPE_ES); + pWrkrData->curlHeader = NULL; + pWrkrData->curlPostHandle = NULL; + pWrkrData->curlCheckConnHandle = NULL; + pWrkrData->serverIndex = 0; + pWrkrData->restURL = NULL; + if(pData->bulkmode) { + pWrkrData->batch.currTpl1 = NULL; + pWrkrData->batch.currTpl2 = NULL; + if((pWrkrData->batch.data = es_newStr(1024)) == NULL) { + LogError(0, RS_RET_OUT_OF_MEMORY, + "omelasticsearch: error creating batch string " + "turned off bulk mode\n"); + pData->bulkmode = 0; /* at least it works */ + } + } + pWrkrData->nOperations = 0; + pWrkrData->reply = NULL; + pWrkrData->replyLen = 0; + pWrkrData->replyBufLen = 0; + iRet = curlSetup(pWrkrData); +ENDcreateWrkrInstance + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + +BEGINfreeInstance + int i; +CODESTARTfreeInstance + if(pData->fdErrFile != -1) + close(pData->fdErrFile); + + if(loadModConf != NULL) { + /* we keep our instances in our own internal list - this also + * means we need to cleanup that list, else we cause grief. + */ + instanceData *prev = NULL; + for(instanceData *inst = loadModConf->root ; inst != NULL ; inst = inst->next) { + if(inst == pData) { + if(loadModConf->tail == inst) { + loadModConf->tail = prev; + } + prev->next = inst->next; + /* no need to correct inst back to prev - we exit now! */ + break; + } else { + prev = inst; + } + } + } + + pthread_mutex_destroy(&pData->mutErrFile); + for(i = 0 ; i < pData->numServers ; ++i) + free(pData->serverBaseUrls[i]); + free(pData->serverBaseUrls); + free(pData->uid); + free(pData->pwd); + free(pData->authBuf); + free(pData->searchIndex); + free(pData->searchType); + free(pData->pipelineName); + free(pData->parent); + free(pData->tplName); + free(pData->timeout); + free(pData->errorFile); + free(pData->bulkId); + free(pData->caCertFile); + free(pData->myCertFile); + free(pData->myPrivKeyFile); + free(pData->retryRulesetName); + if (pData->ratelimiter != NULL) + ratelimitDestruct(pData->ratelimiter); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + if(pWrkrData->curlHeader != NULL) { + curl_slist_free_all(pWrkrData->curlHeader); + pWrkrData->curlHeader = NULL; + } + if(pWrkrData->curlCheckConnHandle != NULL) { + curl_easy_cleanup(pWrkrData->curlCheckConnHandle); + pWrkrData->curlCheckConnHandle = NULL; + } + if(pWrkrData->curlPostHandle != NULL) { + curl_easy_cleanup(pWrkrData->curlPostHandle); + pWrkrData->curlPostHandle = NULL; + } + if (pWrkrData->restURL != NULL) { + free(pWrkrData->restURL); + pWrkrData->restURL = NULL; + } + es_deleteStr(pWrkrData->batch.data); + free(pWrkrData->reply); +ENDfreeWrkrInstance + +BEGINdbgPrintInstInfo + int i; +CODESTARTdbgPrintInstInfo + dbgprintf("omelasticsearch\n"); + dbgprintf("\ttemplate='%s'\n", pData->tplName); + dbgprintf("\tnumServers=%d\n", pData->numServers); + dbgprintf("\thealthCheckTimeout=%lu\n", pData->healthCheckTimeout); + dbgprintf("\tindexTimeout=%lu\n", pData->indexTimeout); + dbgprintf("\tserverBaseUrls="); + for(i = 0 ; i < pData->numServers ; ++i) + dbgprintf("%c'%s'", i == 0 ? '[' : ' ', pData->serverBaseUrls[i]); + dbgprintf("]\n"); + dbgprintf("\tdefaultPort=%d\n", pData->defaultPort); + dbgprintf("\tuid='%s'\n", pData->uid == NULL ? (uchar*)"(not configured)" : pData->uid); + dbgprintf("\tpwd=(%sconfigured)\n", pData->pwd == NULL ? "not " : ""); + dbgprintf("\tsearch index='%s'\n", pData->searchIndex == NULL + ? (uchar*)"(not configured)" : pData->searchIndex); + dbgprintf("\tsearch type='%s'\n", pData->searchType == NULL + ? (uchar*)"(not configured)" : pData->searchType); + dbgprintf("\tpipeline name='%s'\n", pData->pipelineName); + dbgprintf("\tdynamic pipeline name=%d\n", pData->dynPipelineName); + dbgprintf("\tskipPipelineIfEmpty=%d\n", pData->skipPipelineIfEmpty); + dbgprintf("\tparent='%s'\n", pData->parent); + dbgprintf("\ttimeout='%s'\n", pData->timeout); + dbgprintf("\tdynamic search index=%d\n", pData->dynSrchIdx); + dbgprintf("\tdynamic search type=%d\n", pData->dynSrchType); + dbgprintf("\tdynamic parent=%d\n", pData->dynParent); + dbgprintf("\tuse https=%d\n", pData->useHttps); + dbgprintf("\tbulkmode=%d\n", pData->bulkmode); + dbgprintf("\tmaxbytes=%zu\n", pData->maxbytes); + dbgprintf("\tallowUnsignedCerts=%d\n", pData->allowUnsignedCerts); + dbgprintf("\tskipVerifyHost=%d\n", pData->skipVerifyHost); + dbgprintf("\terrorfile='%s'\n", pData->errorFile == NULL ? + (uchar*)"(not configured)" : pData->errorFile); + dbgprintf("\terroronly=%d\n", pData->errorOnly); + dbgprintf("\tinterleaved=%d\n", pData->interleaved); + dbgprintf("\tdynbulkid=%d\n", pData->dynBulkId); + dbgprintf("\tbulkid='%s'\n", pData->bulkId); + dbgprintf("\ttls.cacert='%s'\n", pData->caCertFile); + dbgprintf("\ttls.mycert='%s'\n", pData->myCertFile); + dbgprintf("\ttls.myprivkey='%s'\n", pData->myPrivKeyFile); + dbgprintf("\twriteoperation='%d'\n", pData->writeOperation); + dbgprintf("\tretryfailures='%d'\n", pData->retryFailures); + dbgprintf("\tratelimit.interval='%u'\n", pData->ratelimitInterval); + dbgprintf("\tratelimit.burst='%u'\n", pData->ratelimitBurst); + dbgprintf("\trebindinterval='%d'\n", pData->rebindInterval); +ENDdbgPrintInstInfo + + +/* elasticsearch POST result string ... useful for debugging */ +static size_t +curlResult(void *const ptr, const size_t size, const size_t nmemb, void *const userdata) +{ + const char *const p = (const char *)ptr; + wrkrInstanceData_t *const pWrkrData = (wrkrInstanceData_t*) userdata; + char *buf; + const size_t size_add = size*nmemb; + size_t newlen; + PTR_ASSERT_CHK(pWrkrData, WRKR_DATA_TYPE_ES); + newlen = pWrkrData->replyLen + size_add; + if(newlen + 1 > pWrkrData->replyBufLen) { + if((buf = realloc(pWrkrData->reply, pWrkrData->replyBufLen + size_add + 1)) == NULL) { + LogError(errno, RS_RET_ERR, "omelasticsearch: realloc failed in curlResult"); + return 0; /* abort due to failure */ + } + pWrkrData->replyBufLen += size_add + 1; + pWrkrData->reply = buf; + } + memcpy(pWrkrData->reply+pWrkrData->replyLen, p, size_add); + pWrkrData->replyLen = newlen; + return size_add; +} + +/* Build basic URL part, which includes hostname and port as follows: + * http://hostname:port/ based on a server param + * Newly creates a cstr for this purpose. + * Note: serverParam MUST NOT end in '/' (caller must strip if it exists) + */ +static rsRetVal +computeBaseUrl(const char*const serverParam, + const int defaultPort, + const sbool useHttps, + uchar **baseUrl) +{ +# define SCHEME_HTTPS "https://" +# define SCHEME_HTTP "http://" + + char portBuf[64]; + int r = 0; + const char *host = serverParam; + DEFiRet; + + assert(serverParam[strlen(serverParam)-1] != '/'); + + es_str_t *urlBuf = es_newStr(256); + if (urlBuf == NULL) { + LogError(0, RS_RET_OUT_OF_MEMORY, + "omelasticsearch: failed to allocate es_str urlBuf in computeBaseUrl"); + ABORT_FINALIZE(RS_RET_ERR); + } + + /* Find where the hostname/ip of the server starts. If the scheme is not specified + in the uri, start the buffer with a scheme corresponding to the useHttps parameter. + */ + if (strcasestr(serverParam, SCHEME_HTTP)) + host = serverParam + strlen(SCHEME_HTTP); + else if (strcasestr(serverParam, SCHEME_HTTPS)) + host = serverParam + strlen(SCHEME_HTTPS); + else + r = useHttps ? es_addBuf(&urlBuf, SCHEME_HTTPS, sizeof(SCHEME_HTTPS)-1) : + es_addBuf(&urlBuf, SCHEME_HTTP, sizeof(SCHEME_HTTP)-1); + + if (r == 0) r = es_addBuf(&urlBuf, (char *)serverParam, strlen(serverParam)); + if (r == 0 && !strchr(host, ':')) { + snprintf(portBuf, sizeof(portBuf), ":%d", defaultPort); + r = es_addBuf(&urlBuf, portBuf, strlen(portBuf)); + } + if (r == 0) r = es_addChar(&urlBuf, '/'); + if (r == 0) *baseUrl = (uchar*) es_str2cstr(urlBuf, NULL); + + if (r != 0 || baseUrl == NULL) { + LogError(0, RS_RET_ERR, + "omelasticsearch: error occurred computing baseUrl from server %s", serverParam); + ABORT_FINALIZE(RS_RET_ERR); + } +finalize_it: + if (urlBuf) { + es_deleteStr(urlBuf); + } + RETiRet; +} + +static inline void +incrementServerIndex(wrkrInstanceData_t *pWrkrData) +{ + pWrkrData->serverIndex = (pWrkrData->serverIndex + 1) % pWrkrData->pData->numServers; +} + + +/* checks if connection to ES can be established; also iterates over + * potential servers to support high availability (HA) feature. If it + * needs to switch server, will record new one in curl handle. + */ +static rsRetVal ATTR_NONNULL() +checkConn(wrkrInstanceData_t *const pWrkrData) +{ +# define HEALTH_URI "_cat/health" + CURL *curl; + CURLcode res; + es_str_t *urlBuf; + char* healthUrl = NULL; + char* serverUrl; + int i; + int r; + DEFiRet; + + pWrkrData->replyLen = 0; + curl = pWrkrData->curlCheckConnHandle; + urlBuf = es_newStr(256); + if (urlBuf == NULL) { + LogError(0, RS_RET_OUT_OF_MEMORY, + "omelasticsearch: unable to allocate buffer for health check uri."); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + for(i = 0; i < pWrkrData->pData->numServers; ++i) { + serverUrl = (char*) pWrkrData->pData->serverBaseUrls[pWrkrData->serverIndex]; + + es_emptyStr(urlBuf); + r = es_addBuf(&urlBuf, serverUrl, strlen(serverUrl)); + if(r == 0) r = es_addBuf(&urlBuf, HEALTH_URI, sizeof(HEALTH_URI)-1); + if(r == 0) healthUrl = es_str2cstr(urlBuf, NULL); + if(r != 0 || healthUrl == NULL) { + LogError(0, RS_RET_OUT_OF_MEMORY, + "omelasticsearch: unable to allocate buffer for health check uri."); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + curl_easy_setopt(curl, CURLOPT_URL, healthUrl); + curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curlResult); + res = curl_easy_perform(curl); + free(healthUrl); + + if (res == CURLE_OK) { + DBGPRINTF("omelasticsearch: checkConn %s completed with success " + "on attempt %d\n", serverUrl, i); + ABORT_FINALIZE(RS_RET_OK); + } + + DBGPRINTF("omelasticsearch: checkConn %s failed on attempt %d: %s\n", + serverUrl, i, curl_easy_strerror(res)); + STATSCOUNTER_INC(checkConnFail, mutCheckConnFail); + incrementServerIndex(pWrkrData); + } + + LogMsg(0, RS_RET_SUSPENDED, LOG_WARNING, + "omelasticsearch: checkConn failed after %d attempts.", i); + ABORT_FINALIZE(RS_RET_SUSPENDED); + +finalize_it: + if(urlBuf != NULL) + es_deleteStr(urlBuf); + RETiRet; +} + + +BEGINtryResume +CODESTARTtryResume + DBGPRINTF("omelasticsearch: tryResume called\n"); + iRet = checkConn(pWrkrData); +ENDtryResume + + +/* get the current index and type for this message */ +static void ATTR_NONNULL(1) +getIndexTypeAndParent(const instanceData *const pData, uchar **const tpls, + uchar **const srchIndex, uchar **const srchType, uchar **const parent, + uchar **const bulkId, uchar **const pipelineName) +{ + *srchIndex = pData->searchIndex; + *parent = pData->parent; + *srchType = pData->searchType; + *bulkId = pData->bulkId; + *pipelineName = pData->pipelineName; + if(tpls == NULL) { + goto done; + } + + int iNumTpls = 1; + if(pData->dynSrchIdx) { + *srchIndex = tpls[iNumTpls]; + ++iNumTpls; + } + if(pData->dynSrchType) { + *srchType = tpls[iNumTpls]; + ++iNumTpls; + } + if(pData->dynParent) { + *parent = tpls[iNumTpls]; + ++iNumTpls; + } + if(pData->dynBulkId) { + *bulkId = tpls[iNumTpls]; + ++iNumTpls; + } + if(pData->dynPipelineName) { + *pipelineName = tpls[iNumTpls]; + ++iNumTpls; + } + +done: + return; +} + + +static rsRetVal ATTR_NONNULL(1) +setPostURL(wrkrInstanceData_t *const pWrkrData, uchar **const tpls) +{ + uchar *searchIndex = NULL; + uchar *searchType; + uchar *pipelineName; + uchar *parent; + uchar *bulkId; + char* baseUrl; + /* since 7.0, the API always requires /idx/_doc, so use that if searchType is not explicitly set */ + uchar* actualSearchType = (uchar*)"_doc"; + es_str_t *url; + int r = 0; + DEFiRet; + instanceData *const pData = pWrkrData->pData; + char separator; + const int bulkmode = pData->bulkmode; + + baseUrl = (char*)pData->serverBaseUrls[pWrkrData->serverIndex]; + url = es_newStrFromCStr(baseUrl, strlen(baseUrl)); + if (url == NULL) { + LogError(0, RS_RET_OUT_OF_MEMORY, + "omelasticsearch: error allocating new estr for POST url."); + ABORT_FINALIZE(RS_RET_ERR); + } + + separator = '?'; + + if(bulkmode) { + r = es_addBuf(&url, "_bulk", sizeof("_bulk")-1); + parent = NULL; + } else { + getIndexTypeAndParent(pData, tpls, &searchIndex, &searchType, &parent, &bulkId, &pipelineName); + if(searchIndex != NULL) { + r = es_addBuf(&url, (char*)searchIndex, ustrlen(searchIndex)); + if(searchType != NULL && searchType[0] != '\0') { + actualSearchType = searchType; + } + if(r == 0) r = es_addChar(&url, '/'); + if(r == 0) r = es_addBuf(&url, (char*)actualSearchType, ustrlen(actualSearchType)); + } + if(pipelineName != NULL && (!pData->skipPipelineIfEmpty || pipelineName[0] != '\0')) { + if(r == 0) r = es_addChar(&url, separator); + if(r == 0) r = es_addBuf(&url, "pipeline=", sizeof("pipeline=")-1); + if(r == 0) r = es_addBuf(&url, (char*)pipelineName, ustrlen(pipelineName)); + separator = '&'; + } + } + + if(pData->timeout != NULL) { + if(r == 0) r = es_addChar(&url, separator); + if(r == 0) r = es_addBuf(&url, "timeout=", sizeof("timeout=")-1); + if(r == 0) r = es_addBuf(&url, (char*)pData->timeout, ustrlen(pData->timeout)); + separator = '&'; + } + + if(parent != NULL) { + if(r == 0) r = es_addChar(&url, separator); + if(r == 0) r = es_addBuf(&url, "parent=", sizeof("parent=")-1); + if(r == 0) es_addBuf(&url, (char*)parent, ustrlen(parent)); + } + + if(pWrkrData->restURL != NULL) + free(pWrkrData->restURL); + + pWrkrData->restURL = (uchar*)es_str2cstr(url, NULL); + curl_easy_setopt(pWrkrData->curlPostHandle, CURLOPT_URL, pWrkrData->restURL); + DBGPRINTF("omelasticsearch: using REST URL: '%s'\n", pWrkrData->restURL); + +finalize_it: + if (url != NULL) + es_deleteStr(url); + RETiRet; +} + + +/* this method computes the expected size of adding the next message into + * the batched request to elasticsearch + */ +static size_t +computeMessageSize(const wrkrInstanceData_t *const pWrkrData, + const uchar *const message, + uchar **const tpls) +{ + size_t r = sizeof(META_END)-1 + sizeof("\n")-1; + if (pWrkrData->pData->writeOperation == ES_WRITE_CREATE) + r += sizeof(META_STRT_CREATE)-1; + else + r += sizeof(META_STRT)-1; + + uchar *searchIndex = NULL; + uchar *searchType; + uchar *parent = NULL; + uchar *bulkId = NULL; + uchar *pipelineName; + + getIndexTypeAndParent(pWrkrData->pData, tpls, &searchIndex, &searchType, &parent, &bulkId, &pipelineName); + r += ustrlen((char *)message); + if(searchIndex != NULL) { + r += ustrlen(searchIndex); + } + if(searchType != NULL) { + if(searchType[0] == '\0') { + r += 4; // "_doc" + } else { + r += ustrlen(searchType); + } + } + if(parent != NULL) { + r += sizeof(META_PARENT)-1 + ustrlen(parent); + } + if(bulkId != NULL) { + r += sizeof(META_ID)-1 + ustrlen(bulkId); + } + if(pipelineName != NULL && (!pWrkrData->pData->skipPipelineIfEmpty || pipelineName[0] != '\0')) { + r += sizeof(META_PIPELINE)-1 + ustrlen(pipelineName); + } + + return r; +} + + +/* this method does not directly submit but builds a batch instead. It + * may submit, if we have dynamic index/type and the current type or + * index changes. + */ +static rsRetVal +buildBatch(wrkrInstanceData_t *pWrkrData, uchar *message, uchar **tpls) +{ + int length = strlen((char *)message); + int r; + int endQuote = 1; + uchar *searchIndex = NULL; + uchar *searchType; + uchar *parent = NULL; + uchar *bulkId = NULL; + uchar *pipelineName; + DEFiRet; + + getIndexTypeAndParent(pWrkrData->pData, tpls, &searchIndex, &searchType, &parent, &bulkId, &pipelineName); + if (pWrkrData->pData->writeOperation == ES_WRITE_CREATE) { + r = es_addBuf(&pWrkrData->batch.data, META_STRT_CREATE, sizeof(META_STRT_CREATE)-1); + endQuote = 0; + } else + r = es_addBuf(&pWrkrData->batch.data, META_STRT, sizeof(META_STRT)-1); + if(searchIndex != NULL) { + endQuote = 1; + if (pWrkrData->pData->writeOperation == ES_WRITE_CREATE) + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, META_IX, sizeof(META_IX)-1); + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, (char*)searchIndex, + ustrlen(searchIndex)); + if(searchType != NULL && searchType[0] != '\0') { + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, META_TYPE, sizeof(META_TYPE)-1); + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, (char*)searchType, + ustrlen(searchType)); + } + } + if(parent != NULL) { + endQuote = 1; + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, META_PARENT, sizeof(META_PARENT)-1); + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, (char*)parent, ustrlen(parent)); + } + if(pipelineName != NULL && (!pWrkrData->pData->skipPipelineIfEmpty || pipelineName[0] != '\0')) { + endQuote = 1; + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, META_PIPELINE, sizeof(META_PIPELINE)-1); + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, (char*)pipelineName, ustrlen(pipelineName)); + } + if(bulkId != NULL) { + endQuote = 1; + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, META_ID, sizeof(META_ID)-1); + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, (char*)bulkId, ustrlen(bulkId)); + } + if(endQuote == 0) { + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, META_END_NOQUOTE, sizeof(META_END_NOQUOTE)-1); + } else { + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, META_END, sizeof(META_END)-1); + } + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, (char*)message, length); + if(r == 0) r = es_addBuf(&pWrkrData->batch.data, "\n", sizeof("\n")-1); + if(r != 0) { + LogError(0, RS_RET_ERR, + "omelasticsearch: growing batch failed with code %d", r); + ABORT_FINALIZE(RS_RET_ERR); + } + ++pWrkrData->batch.nmemb; + iRet = RS_RET_OK; + +finalize_it: + RETiRet; +} + +/* + * Dumps entire bulk request and response in error log + */ +static rsRetVal +getDataErrorDefault(wrkrInstanceData_t *pWrkrData,fjson_object **pReplyRoot,uchar *reqmsg,char **rendered) +{ + DEFiRet; + fjson_object *req=NULL; + fjson_object *errRoot=NULL; + fjson_object *replyRoot = *pReplyRoot; + + if((req=fjson_object_new_object()) == NULL) ABORT_FINALIZE(RS_RET_ERR); + fjson_object_object_add(req, "url", fjson_object_new_string((char*)pWrkrData->restURL)); + fjson_object_object_add(req, "postdata", fjson_object_new_string((char*)reqmsg)); + + if((errRoot=fjson_object_new_object()) == NULL) ABORT_FINALIZE(RS_RET_ERR); + fjson_object_object_add(errRoot, "request", req); + fjson_object_object_add(errRoot, "reply", replyRoot); + *rendered = strdup((char*)fjson_object_to_json_string(errRoot)); + + req=NULL; + fjson_object_put(errRoot); + + *pReplyRoot = NULL; /* tell caller not to delete once again! */ + + finalize_it: + fjson_object_put(req); + RETiRet; +} + +/* + * Sets bulkRequestNextSectionStart pointer to next sections start in the buffer pointed by bulkRequest. + * Sections are marked by { and } + */ +static rsRetVal +getSection(const char* bulkRequest, const char **bulkRequestNextSectionStart ) +{ + DEFiRet; + char* idx =0; + if( (idx = strchr(bulkRequest,'\n')) != 0)/*intermediate section*/ + { + *bulkRequestNextSectionStart = ++idx; + } + else + { + *bulkRequestNextSectionStart=0; + ABORT_FINALIZE(RS_RET_ERR); + } + + finalize_it: + RETiRet; +} + +/* + * Sets the new string in singleRequest for one request in bulkRequest + * and sets lastLocation pointer to the location till which bulkrequest has been parsed. + * (used as input to make function thread safe.) + */ +static rsRetVal +getSingleRequest(const char* bulkRequest, char** singleRequest, const char **lastLocation) +{ + DEFiRet; + const char *req = bulkRequest; + const char *start = bulkRequest; + if (getSection(req,&req)!=RS_RET_OK) + ABORT_FINALIZE(RS_RET_ERR); + + if (getSection(req,&req)!=RS_RET_OK) + ABORT_FINALIZE(RS_RET_ERR); + + CHKmalloc(*singleRequest = (char*) calloc (req - start+ 1 + 1,1)); + /* (req - start+ 1 == length of data + 1 for terminal char)*/ + memcpy(*singleRequest,start,req - start); + *lastLocation=req; + +finalize_it: + RETiRet; +} + +/* + * check the status of response from ES + */ +static int checkReplyStatus(fjson_object* ok) { + return (ok == NULL || !fjson_object_is_type(ok, fjson_type_int) || fjson_object_get_int(ok) < 0 || + fjson_object_get_int(ok) > 299); +} + +/* + * Context object for error file content creation or status check + * response_item - the full {"create":{"_index":"idxname",.....}} + * response_body - the inner hash of the response_item - {"_index":"idxname",...} + * status - the "status" field from the inner hash - "status":500 + * should be able to use fjson_object_get_int(status) to get the http result code + */ +typedef struct exeContext{ + int statusCheckOnly; + fjson_object *errRoot; + rsRetVal (*prepareErrorFileContent)(struct exeContext *ctx,int itemStatus,char *request,char *response, + fjson_object *response_item, fjson_object *response_body, fjson_object *status); + es_write_ops_t writeOperation; + ratelimit_t *ratelimiter; + ruleset_t *retryRuleset; + struct json_tokener *jTokener; +} context; + +/* + * get content to be written in error file using context passed + */ +static rsRetVal +parseRequestAndResponseForContext(wrkrInstanceData_t *pWrkrData,fjson_object **pReplyRoot,uchar *reqmsg,context *ctx) +{ + DEFiRet; + fjson_object *replyRoot = *pReplyRoot; + int i; + int numitems; + fjson_object *items=NULL, *jo_errors = NULL; + + /*iterate over items*/ + if(!fjson_object_object_get_ex(replyRoot, "items", &items)) { + LogError(0, RS_RET_DATAFAIL, + "omelasticsearch: error in elasticsearch reply: " + "bulkmode insert does not return array, reply is: %s", + pWrkrData->reply); + ABORT_FINALIZE(RS_RET_DATAFAIL); + } + + numitems = fjson_object_array_length(items); + + int errors = 0; + if(fjson_object_object_get_ex(replyRoot, "errors", &jo_errors)) { + errors = fjson_object_get_boolean(jo_errors); + if (!errors && pWrkrData->pData->retryFailures) { + STATSCOUNTER_ADD(indexSuccess, mutIndexSuccess, numitems); + return RS_RET_OK; + } + } + + if (reqmsg) { + DBGPRINTF("omelasticsearch: Entire request %s\n", reqmsg); + } else { + DBGPRINTF("omelasticsearch: Empty request\n"); + } + const char *lastReqRead= (char*)reqmsg; + + DBGPRINTF("omelasticsearch: %d items in reply\n", numitems); + for(i = 0 ; i < numitems ; ++i) { + + fjson_object *item=NULL; + fjson_object *result=NULL; + fjson_object *ok=NULL; + int itemStatus=0; + item = fjson_object_array_get_idx(items, i); + if(item == NULL) { + LogError(0, RS_RET_DATAFAIL, + "omelasticsearch: error in elasticsearch reply: " + "cannot obtain reply array item %d", i); + ABORT_FINALIZE(RS_RET_DATAFAIL); + } + fjson_object_object_get_ex(item, "create", &result); + if(result == NULL || !fjson_object_is_type(result, fjson_type_object)) { + fjson_object_object_get_ex(item, "index", &result); + if(result == NULL || !fjson_object_is_type(result, fjson_type_object)) { + LogError(0, RS_RET_DATAFAIL, + "omelasticsearch: error in elasticsearch reply: " + "cannot obtain 'result' item for #%d", i); + ABORT_FINALIZE(RS_RET_DATAFAIL); + } + } + + fjson_object_object_get_ex(result, "status", &ok); + itemStatus = checkReplyStatus(ok); + + char *request =0; + char *response =0; + if(ctx->statusCheckOnly || (NULL == lastReqRead)) { + if(itemStatus) { + DBGPRINTF("omelasticsearch: error in elasticsearch reply: item %d, " + "status is %d\n", i, fjson_object_get_int(ok)); + DBGPRINTF("omelasticsearch: status check found error.\n"); + ABORT_FINALIZE(RS_RET_DATAFAIL); + } + + } else { + if(getSingleRequest(lastReqRead,&request,&lastReqRead) != RS_RET_OK) { + DBGPRINTF("omelasticsearch: Couldn't get post request\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + response = (char*)fjson_object_to_json_string_ext(result, FJSON_TO_STRING_PLAIN); + + if(response==NULL) { + free(request);/*as its has been assigned.*/ + DBGPRINTF("omelasticsearch: Error getting fjson_object_to_string_ext. Cannot " + "continue\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + + /*call the context*/ + rsRetVal ret = ctx->prepareErrorFileContent(ctx, itemStatus, request, + response, item, result, ok); + + /*free memory in any case*/ + free(request); + + if(ret != RS_RET_OK) { + DBGPRINTF("omelasticsearch: Error in preparing errorfileContent. Cannot continue\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + } + } + +finalize_it: + RETiRet; +} + +/* + * Dumps only failed requests of bulk insert + */ +static rsRetVal +getDataErrorOnly(context *ctx,int itemStatus,char *request,char *response, + fjson_object *response_item, fjson_object *response_body, fjson_object *status) +{ + DEFiRet; + (void)response_item; /* unused */ + (void)response_body; /* unused */ + (void)status; /* unused */ + if(itemStatus) { + fjson_object *onlyErrorResponses =NULL; + fjson_object *onlyErrorRequests=NULL; + + if(!fjson_object_object_get_ex(ctx->errRoot, "reply", &onlyErrorResponses)) { + DBGPRINTF("omelasticsearch: Failed to get reply json array. Invalid context. Cannot " + "continue\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + fjson_object_array_add(onlyErrorResponses, fjson_object_new_string(response)); + + if(!fjson_object_object_get_ex(ctx->errRoot, "request", &onlyErrorRequests)) { + DBGPRINTF("omelasticsearch: Failed to get request json array. Invalid context. Cannot " + "continue\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + + fjson_object_array_add(onlyErrorRequests, fjson_object_new_string(request)); + + } + +finalize_it: + RETiRet; +} + +/* + * Dumps all requests of bulk insert interleaved with request and response + */ + +static rsRetVal +getDataInterleaved(context *ctx, + int __attribute__((unused)) itemStatus, + char *request, + char *response, + fjson_object *response_item, + fjson_object *response_body, + fjson_object *status +) +{ + DEFiRet; + (void)response_item; /* unused */ + (void)response_body; /* unused */ + (void)status; /* unused */ + fjson_object *interleaved =NULL; + if(!fjson_object_object_get_ex(ctx->errRoot, "response", &interleaved)) { + DBGPRINTF("omelasticsearch: Failed to get response json array. Invalid context. Cannot continue\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + + fjson_object *interleavedNode=NULL; + /*create interleaved node that has req and response json data*/ + if((interleavedNode=fjson_object_new_object()) == NULL) + { + DBGPRINTF("omelasticsearch: Failed to create interleaved node. Cann't continue\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + fjson_object_object_add(interleavedNode,"request", fjson_object_new_string(request)); + fjson_object_object_add(interleavedNode,"reply", fjson_object_new_string(response)); + + fjson_object_array_add(interleaved, interleavedNode); + + + + finalize_it: + RETiRet; +} + + +/* + * Dumps only failed requests of bulk insert interleaved with request and response + */ + +static rsRetVal +getDataErrorOnlyInterleaved(context *ctx,int itemStatus,char *request,char *response, + fjson_object *response_item, fjson_object *response_body, fjson_object *status) +{ + DEFiRet; + if (itemStatus) { + if(getDataInterleaved(ctx, itemStatus,request,response, + response_item, response_body, status)!= RS_RET_OK) { + ABORT_FINALIZE(RS_RET_ERR); + } + } + + finalize_it: + RETiRet; +} + +/* input JSON looks like this: + * {"someoperation":{"field1":"value1","field2":{.....}}} + * output looks like this: + * {"writeoperation":"someoperation","field1":"value1","field2":{.....}} + */ +static rsRetVal +formatBulkReqOrResp(fjson_object *jo_input, fjson_object *jo_output) +{ + DEFiRet; + fjson_object *jo = NULL; + struct json_object_iterator it = json_object_iter_begin(jo_input); + struct json_object_iterator itEnd = json_object_iter_end(jo_input); + + /* set the writeoperation if not already set */ + if (!fjson_object_object_get_ex(jo_output, "writeoperation", NULL)) { + const char *optype = NULL; + if (!json_object_iter_equal(&it, &itEnd)) + optype = json_object_iter_peek_name(&it); + if (optype) { + jo = json_object_new_string(optype); + } else { + jo = json_object_new_string("unknown"); + } + CHKmalloc(jo); + json_object_object_add(jo_output, "writeoperation", jo); + } + if (!json_object_iter_equal(&it, &itEnd)) { + /* now iterate the operation object */ + jo = json_object_iter_peek_value(&it); + it = json_object_iter_begin(jo); + itEnd = json_object_iter_end(jo); + while (!json_object_iter_equal(&it, &itEnd)) { + const char *name = json_object_iter_peek_name(&it); + /* do not overwrite existing fields */ + if (!fjson_object_object_get_ex(jo_output, name, NULL)) { + json_object_object_add(jo_output, name, + json_object_get(json_object_iter_peek_value(&it))); + } + json_object_iter_next(&it); + } + } +finalize_it: + RETiRet; +} + +/* request string looks like this (other fields are "_parent" and "pipeline") + * "{\"create\":{\"_index\": \"rsyslog_testbench\",\"_type\":\"test-type\", + * \"_id\":\"FAEAFC0D17C847DA8BD6F47BC5B3800A\"}}\n + * {\"msgnum\":\"x00000000\",\"viaq_msg_id\":\"FAEAFC0D17C847DA8BD6F47BC5B3800A\"}\n" + * store the metadata header fields in the metadata object + * start = first \n + 1 + * end = last \n + */ +static rsRetVal +createMsgFromRequest(const char *request, context *ctx, smsg_t **msg, fjson_object *omes) +{ + DEFiRet; + fjson_object *jo_msg = NULL, *jo_metadata = NULL, *jo_request = NULL; + const char *datastart, *dataend; + size_t datalen; + enum json_tokener_error json_error; + + *msg = NULL; + if (!(datastart = strchr(request, '\n')) || (datastart[1] != '{')) { + LogError(0, RS_RET_ERR, + "omelasticsearch: malformed original request - " + "could not find start of original data [%s]", + request); + ABORT_FINALIZE(RS_RET_ERR); + } + datalen = datastart - request; + json_tokener_reset(ctx->jTokener); + jo_metadata = json_tokener_parse_ex(ctx->jTokener, request, datalen); + json_error = fjson_tokener_get_error(ctx->jTokener); + if (!jo_metadata || (json_error != fjson_tokener_success)) { + LogError(0, RS_RET_ERR, + "omelasticsearch: parse error [%s] - could not convert original " + "request metadata header JSON back into JSON object [%s]", + fjson_tokener_error_desc(json_error), request); + ABORT_FINALIZE(RS_RET_ERR); + } + CHKiRet(formatBulkReqOrResp(jo_metadata, omes)); + + datastart++; /* advance to '{' */ + if (!(dataend = strchr(datastart, '\n')) || (dataend[1] != '\0')) { + LogError(0, RS_RET_ERR, + "omelasticsearch: malformed original request - " + "could not find end of original data [%s]", + request); + ABORT_FINALIZE(RS_RET_ERR); + } + datalen = dataend - datastart; + json_tokener_reset(ctx->jTokener); + jo_request = json_tokener_parse_ex(ctx->jTokener, datastart, datalen); + json_error = fjson_tokener_get_error(ctx->jTokener); + if (!jo_request || (json_error != fjson_tokener_success)) { + LogError(0, RS_RET_ERR, + "omelasticsearch: parse error [%s] - could not convert original " + "request JSON back into JSON object [%s]", + fjson_tokener_error_desc(json_error), request); + ABORT_FINALIZE(RS_RET_ERR); + } + + CHKiRet(msgConstruct(msg)); + MsgSetFlowControlType(*msg, eFLOWCTL_FULL_DELAY); + MsgSetInputName(*msg, pInputName); + if (fjson_object_object_get_ex(jo_request, "message", &jo_msg)) { + const char *rawmsg = json_object_get_string(jo_msg); + const size_t msgLen = (size_t)json_object_get_string_len(jo_msg); + MsgSetRawMsg(*msg, rawmsg, msgLen); + } else { + /* use entire data part of request as rawmsg */ + MsgSetRawMsg(*msg, datastart, datalen); + } + MsgSetMSGoffs(*msg, 0); /* we do not have a header... */ + MsgSetTAG(*msg, (const uchar *)"omes", 4); + CHKiRet(msgAddJSON(*msg, (uchar*)"!", jo_request, 0, 0)); + +finalize_it: + if (jo_metadata) + json_object_put(jo_metadata); + RETiRet; +} + + +static rsRetVal +getDataRetryFailures(context *ctx,int itemStatus,char *request,char *response, + fjson_object *response_item, fjson_object *response_body, fjson_object *status) +{ + DEFiRet; + fjson_object *omes = NULL, *jo = NULL; + int istatus = fjson_object_get_int(status); + int iscreateop = 0; + const char *optype = NULL; + smsg_t *msg = NULL; + int need_free_omes = 0; + + (void)response; + (void)itemStatus; + (void)response_body; + CHKmalloc(omes = json_object_new_object()); + need_free_omes = 1; + /* this adds metadata header fields to omes */ + if (RS_RET_OK != (iRet = createMsgFromRequest(request, ctx, &msg, omes))) { + if (iRet != RS_RET_OUT_OF_MEMORY) { + STATSCOUNTER_INC(indexBadResponse, mutIndexBadResponse); + } else { + ABORT_FINALIZE(iRet); + } + } + CHKmalloc(msg); + /* this adds response fields as local variables to omes */ + if (RS_RET_OK != (iRet = formatBulkReqOrResp(response_item, omes))) { + if (iRet != RS_RET_OUT_OF_MEMORY) { + STATSCOUNTER_INC(indexBadResponse, mutIndexBadResponse); + } else { + ABORT_FINALIZE(iRet); + } + } + if (fjson_object_object_get_ex(omes, "writeoperation", &jo)) { + optype = json_object_get_string(jo); + if (optype && !strcmp("create", optype)) + iscreateop = 1; + if (optype && !strcmp("index", optype) && (ctx->writeOperation == ES_WRITE_INDEX)) + iscreateop = 1; + } + + if (!optype) { + STATSCOUNTER_INC(indexBadResponse, mutIndexBadResponse); + LogMsg(0, RS_RET_ERR, LOG_INFO, + "omelasticsearch: no recognized operation type in response [%s]", + response); + } else if ((istatus == 200) || (istatus == 201)) { + STATSCOUNTER_INC(indexSuccess, mutIndexSuccess); + } else if ((istatus == 409) && iscreateop) { + STATSCOUNTER_INC(indexDuplicate, mutIndexDuplicate); + } else if ((istatus == 400) || (istatus < 200)) { + STATSCOUNTER_INC(indexBadArgument, mutIndexBadArgument); + } else { + fjson_object *error = NULL, *errtype = NULL; + if(fjson_object_object_get_ex(omes, "error", &error) && + fjson_object_object_get_ex(error, "type", &errtype)) { + if (istatus == 429) { + STATSCOUNTER_INC(indexBulkRejection, mutIndexBulkRejection); + } else { + STATSCOUNTER_INC(indexOtherResponse, mutIndexOtherResponse); + } + } else { + STATSCOUNTER_INC(indexBadResponse, mutIndexBadResponse); + LogMsg(0, RS_RET_ERR, LOG_INFO, + "omelasticsearch: unexpected error response [%s]", + response); + } + } + + need_free_omes = 0; + CHKiRet(msgAddJSON(msg, (uchar*)".omes", omes, 0, 0)); + MsgSetRuleset(msg, ctx->retryRuleset); + CHKiRet(ratelimitAddMsg(ctx->ratelimiter, NULL, msg)); +finalize_it: + if (need_free_omes) + json_object_put(omes); + RETiRet; +} + +/* + * get erroronly context + */ +static rsRetVal +initializeErrorOnlyConext(wrkrInstanceData_t *pWrkrData,context *ctx){ + DEFiRet; + ctx->statusCheckOnly=0; + fjson_object *errRoot=NULL; + fjson_object *onlyErrorResponses =NULL; + fjson_object *onlyErrorRequests=NULL; + if((errRoot=fjson_object_new_object()) == NULL) ABORT_FINALIZE(RS_RET_ERR); + + if((onlyErrorResponses=fjson_object_new_array()) == NULL) { + fjson_object_put(errRoot); + ABORT_FINALIZE(RS_RET_ERR); + } + if((onlyErrorRequests=fjson_object_new_array()) == NULL) { + fjson_object_put(errRoot); + fjson_object_put(onlyErrorResponses); + ABORT_FINALIZE(RS_RET_ERR); + } + + fjson_object_object_add(errRoot, "url", fjson_object_new_string((char*)pWrkrData->restURL)); + fjson_object_object_add(errRoot,"request",onlyErrorRequests); + fjson_object_object_add(errRoot, "reply", onlyErrorResponses); + ctx->errRoot = errRoot; + ctx->prepareErrorFileContent= &getDataErrorOnly; + finalize_it: + RETiRet; +} + +/* + * get interleaved context + */ +static rsRetVal +initializeInterleavedConext(wrkrInstanceData_t *pWrkrData,context *ctx){ + DEFiRet; + ctx->statusCheckOnly=0; + fjson_object *errRoot=NULL; + fjson_object *interleaved =NULL; + if((errRoot=fjson_object_new_object()) == NULL) ABORT_FINALIZE(RS_RET_ERR); + if((interleaved=fjson_object_new_array()) == NULL) { + fjson_object_put(errRoot); + ABORT_FINALIZE(RS_RET_ERR); + } + + + fjson_object_object_add(errRoot, "url", fjson_object_new_string((char*)pWrkrData->restURL)); + fjson_object_object_add(errRoot,"response",interleaved); + ctx->errRoot = errRoot; + ctx->prepareErrorFileContent= &getDataInterleaved; + finalize_it: + RETiRet; +} + +/*get interleaved context*/ +static rsRetVal +initializeErrorInterleavedConext(wrkrInstanceData_t *pWrkrData,context *ctx){ + DEFiRet; + ctx->statusCheckOnly=0; + fjson_object *errRoot=NULL; + fjson_object *interleaved =NULL; + if((errRoot=fjson_object_new_object()) == NULL) ABORT_FINALIZE(RS_RET_ERR); + if((interleaved=fjson_object_new_array()) == NULL) { + fjson_object_put(errRoot); + ABORT_FINALIZE(RS_RET_ERR); + } + + + fjson_object_object_add(errRoot, "url", fjson_object_new_string((char*)pWrkrData->restURL)); + fjson_object_object_add(errRoot,"response",interleaved); + ctx->errRoot = errRoot; + ctx->prepareErrorFileContent= &getDataErrorOnlyInterleaved; + finalize_it: + RETiRet; +} + +/*get retry failures context*/ +static rsRetVal +initializeRetryFailuresContext(wrkrInstanceData_t *pWrkrData,context *ctx){ + DEFiRet; + ctx->statusCheckOnly=0; + fjson_object *errRoot=NULL; + if((errRoot=fjson_object_new_object()) == NULL) ABORT_FINALIZE(RS_RET_ERR); + + + fjson_object_object_add(errRoot, "url", fjson_object_new_string((char*)pWrkrData->restURL)); + ctx->errRoot = errRoot; + ctx->prepareErrorFileContent= &getDataRetryFailures; + CHKmalloc(ctx->jTokener = json_tokener_new()); + finalize_it: + RETiRet; +} + + +/* write data error request/replies to separate error file + * Note: we open the file but never close it before exit. If it + * needs to be closed, HUP must be sent. + */ +static rsRetVal ATTR_NONNULL() +writeDataError(wrkrInstanceData_t *const pWrkrData, + instanceData *const pData, fjson_object **const pReplyRoot, + uchar *const reqmsg) +{ + char *rendered = NULL; + size_t toWrite; + ssize_t wrRet; + sbool bMutLocked = 0; + context ctx; + ctx.errRoot=0; + ctx.writeOperation = pWrkrData->pData->writeOperation; + ctx.ratelimiter = pWrkrData->pData->ratelimiter; + ctx.retryRuleset = pWrkrData->pData->retryRuleset; + ctx.jTokener = NULL; + DEFiRet; + + if(pData->errorFile == NULL) { + DBGPRINTF("omelasticsearch: no local error logger defined - " + "ignoring ES error information\n"); + FINALIZE; + } + + pthread_mutex_lock(&pData->mutErrFile); + bMutLocked = 1; + + DBGPRINTF("omelasticsearch: error file mode: erroronly='%d' errorInterleaved='%d'\n", + pData->errorOnly, pData->interleaved); + + if(pData->interleaved ==0 && pData->errorOnly ==0)/*default write*/ + { + if(getDataErrorDefault(pWrkrData,pReplyRoot, reqmsg, &rendered) != RS_RET_OK) { + ABORT_FINALIZE(RS_RET_ERR); + } + } else { + /*get correct context.*/ + if(pData->interleaved && pData->errorOnly) + { + if(initializeErrorInterleavedConext(pWrkrData, &ctx) != RS_RET_OK) { + DBGPRINTF("omelasticsearch: error initializing error interleaved context.\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + + } else if(pData->errorOnly) { + if(initializeErrorOnlyConext(pWrkrData, &ctx) != RS_RET_OK) { + + DBGPRINTF("omelasticsearch: error initializing error only context.\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + } else if(pData->interleaved) { + if(initializeInterleavedConext(pWrkrData, &ctx) != RS_RET_OK) { + DBGPRINTF("omelasticsearch: error initializing error interleaved context.\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + } else if(pData->retryFailures) { + if(initializeRetryFailuresContext(pWrkrData, &ctx) != RS_RET_OK) { + DBGPRINTF("omelasticsearch: error initializing retry failures context.\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + } else { + DBGPRINTF("omelasticsearch: None of the modes match file write. No data to write.\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + + /*execute context*/ + if(parseRequestAndResponseForContext(pWrkrData, pReplyRoot, reqmsg, &ctx)!= RS_RET_OK) { + DBGPRINTF("omelasticsearch: error creating file content.\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + CHKmalloc(rendered = strdup((char*)fjson_object_to_json_string(ctx.errRoot))); + } + + + if(pData->fdErrFile == -1) { + pData->fdErrFile = open((char*)pData->errorFile, + O_WRONLY|O_CREAT|O_APPEND|O_LARGEFILE|O_CLOEXEC, + S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP); + if(pData->fdErrFile == -1) { + LogError(errno, RS_RET_ERR, "omelasticsearch: error opening error file %s", + pData->errorFile); + ABORT_FINALIZE(RS_RET_ERR); + } + } + + /* we do not do real error-handling on the err file, as this finally complicates + * things way to much. + */ + DBGPRINTF("omelasticsearch: error record: '%s'\n", rendered); + toWrite = strlen(rendered) + 1; + /* Note: we overwrite the '\0' terminator with '\n' -- so we avoid + * caling malloc() -- write() does NOT need '\0'! + */ + rendered[toWrite-1] = '\n'; /* NO LONGER A STRING! */ + wrRet = write(pData->fdErrFile, rendered, toWrite); + if(wrRet != (ssize_t) toWrite) { + LogError(errno, RS_RET_IO_ERROR, + "omelasticsearch: error writing error file %s, write returned %lld", + pData->errorFile, (long long) wrRet); + } + +finalize_it: + if(bMutLocked) + pthread_mutex_unlock(&pData->mutErrFile); + free(rendered); + fjson_object_put(ctx.errRoot); + if (ctx.jTokener) + json_tokener_free(ctx.jTokener); + RETiRet; +} + + +static rsRetVal +checkResultBulkmode(wrkrInstanceData_t *pWrkrData, fjson_object *root, uchar *reqmsg) +{ + DEFiRet; + context ctx; + ctx.errRoot = 0; + ctx.writeOperation = pWrkrData->pData->writeOperation; + ctx.ratelimiter = pWrkrData->pData->ratelimiter; + ctx.retryRuleset = pWrkrData->pData->retryRuleset; + ctx.statusCheckOnly=1; + ctx.jTokener = NULL; + if (pWrkrData->pData->retryFailures) { + ctx.statusCheckOnly=0; + CHKiRet(initializeRetryFailuresContext(pWrkrData, &ctx)); + } + if(parseRequestAndResponseForContext(pWrkrData,&root,reqmsg,&ctx)!= RS_RET_OK) { + DBGPRINTF("omelasticsearch: error found in elasticsearch reply\n"); + ABORT_FINALIZE(RS_RET_DATAFAIL); + } + +finalize_it: + fjson_object_put(ctx.errRoot); + if (ctx.jTokener) + json_tokener_free(ctx.jTokener); + RETiRet; +} + + +static rsRetVal +checkResult(wrkrInstanceData_t *pWrkrData, uchar *reqmsg) +{ + fjson_object *root; + fjson_object *status; + DEFiRet; + + root = fjson_tokener_parse(pWrkrData->reply); + if(root == NULL) { + LogMsg(0, RS_RET_ERR, LOG_WARNING, + "omelasticsearch: could not parse JSON result"); + ABORT_FINALIZE(RS_RET_ERR); + } + + if(pWrkrData->pData->bulkmode) { + iRet = checkResultBulkmode(pWrkrData, root, reqmsg); + } else { + if(fjson_object_object_get_ex(root, "status", &status)) { + iRet = RS_RET_DATAFAIL; + } + } + + /* Note: we ignore errors writing the error file, as we cannot handle + * these in any case. + */ + if(iRet == RS_RET_DATAFAIL) { + STATSCOUNTER_INC(indexESFail, mutIndexESFail); + writeDataError(pWrkrData, pWrkrData->pData, &root, reqmsg); + iRet = RS_RET_OK; /* we have handled the problem! */ + } + +finalize_it: + if(root != NULL) + fjson_object_put(root); + if(iRet != RS_RET_OK) { + STATSCOUNTER_INC(indexESFail, mutIndexESFail); + } + RETiRet; +} + +static void ATTR_NONNULL() +initializeBatch(wrkrInstanceData_t *pWrkrData) +{ + es_emptyStr(pWrkrData->batch.data); + pWrkrData->batch.nmemb = 0; +} + +static rsRetVal ATTR_NONNULL(1, 2) +curlPost(wrkrInstanceData_t *pWrkrData, uchar *message, int msglen, uchar **tpls, const int nmsgs) +{ + CURLcode code; + CURL *const curl = pWrkrData->curlPostHandle; + char errbuf[CURL_ERROR_SIZE] = ""; + DEFiRet; + + PTR_ASSERT_SET_TYPE(pWrkrData, WRKR_DATA_TYPE_ES); + + if ((pWrkrData->pData->rebindInterval > -1) && + (pWrkrData->nOperations > pWrkrData->pData->rebindInterval)) { + curl_easy_setopt(curl, CURLOPT_FRESH_CONNECT, 1); + pWrkrData->nOperations = 0; + STATSCOUNTER_INC(rebinds, mutRebinds); + } else { + /* by default, reuse existing connections */ + curl_easy_setopt(curl, CURLOPT_FRESH_CONNECT, 0); + } + if ((pWrkrData->pData->rebindInterval > -1) && + (pWrkrData->nOperations == pWrkrData->pData->rebindInterval)) { + curl_easy_setopt(curl, CURLOPT_FORBID_REUSE, 1); + } else { + curl_easy_setopt(curl, CURLOPT_FORBID_REUSE, 0); + } + + if(pWrkrData->pData->numServers > 1) { + /* needs to be called to support ES HA feature */ + CHKiRet(checkConn(pWrkrData)); + } + pWrkrData->replyLen = 0; + CHKiRet(setPostURL(pWrkrData, tpls)); + + curl_easy_setopt(curl, CURLOPT_POSTFIELDS, (char *)message); + curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, msglen); + curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errbuf); + code = curl_easy_perform(curl); + DBGPRINTF("curl returned %lld\n", (long long) code); + if (code != CURLE_OK && code != CURLE_HTTP_RETURNED_ERROR) { + STATSCOUNTER_INC(indexHTTPReqFail, mutIndexHTTPReqFail); + indexHTTPFail += nmsgs; + LogError(0, RS_RET_SUSPENDED, + "omelasticsearch: we are suspending ourselfs due " + "to server failure %lld: %s", (long long) code, errbuf); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + if (pWrkrData->pData->rebindInterval > -1) + pWrkrData->nOperations++; + + if(pWrkrData->reply == NULL) { + DBGPRINTF("omelasticsearch: pWrkrData reply==NULL, replyLen = '%d'\n", + pWrkrData->replyLen); + } else { + DBGPRINTF("omelasticsearch: pWrkrData replyLen = '%d'\n", pWrkrData->replyLen); + if(pWrkrData->replyLen > 0) { + pWrkrData->reply[pWrkrData->replyLen] = '\0'; + /* Append 0 Byte if replyLen is above 0 - byte has been reserved in malloc */ + } + DBGPRINTF("omelasticsearch: pWrkrData reply: '%s'\n", pWrkrData->reply); + CHKiRet(checkResult(pWrkrData, message)); + } + +finalize_it: + incrementServerIndex(pWrkrData); + RETiRet; +} + +static rsRetVal +submitBatch(wrkrInstanceData_t *pWrkrData) +{ + char *cstr = NULL; + DEFiRet; + + cstr = es_str2cstr(pWrkrData->batch.data, NULL); + dbgprintf("omelasticsearch: submitBatch, batch: '%s'\n", cstr); + + CHKiRet(curlPost(pWrkrData, (uchar*) cstr, strlen(cstr), NULL, pWrkrData->batch.nmemb)); + +finalize_it: + free(cstr); + RETiRet; +} + +BEGINbeginTransaction +CODESTARTbeginTransaction + if(!pWrkrData->pData->bulkmode) { + FINALIZE; + } + + initializeBatch(pWrkrData); +finalize_it: +ENDbeginTransaction + +BEGINdoAction +CODESTARTdoAction + STATSCOUNTER_INC(indexSubmit, mutIndexSubmit); + + if(pWrkrData->pData->bulkmode) { + const size_t nBytes = computeMessageSize(pWrkrData, ppString[0], ppString); + + /* If max bytes is set and this next message will put us over the limit, + * submit the current buffer and reset */ + if(pWrkrData->pData->maxbytes > 0 + && es_strlen(pWrkrData->batch.data) + nBytes > pWrkrData->pData->maxbytes ) { + dbgprintf("omelasticsearch: maxbytes limit reached, submitting partial " + "batch of %d elements.\n", pWrkrData->batch.nmemb); + CHKiRet(submitBatch(pWrkrData)); + initializeBatch(pWrkrData); + } + CHKiRet(buildBatch(pWrkrData, ppString[0], ppString)); + + /* If there is only one item in the batch, all previous items have been + * submitted or this is the first item for this transaction. Return previous + * committed so that all items leading up to the current (exclusive) + * are not replayed should a failure occur anywhere else in the transaction. */ + iRet = pWrkrData->batch.nmemb == 1 ? RS_RET_PREVIOUS_COMMITTED : RS_RET_DEFER_COMMIT; + } else { + CHKiRet(curlPost(pWrkrData, ppString[0], strlen((char*)ppString[0]), + ppString, 1)); + } +finalize_it: +ENDdoAction + + +BEGINendTransaction +CODESTARTendTransaction + /* End Transaction only if batch data is not empty */ + if (pWrkrData->batch.data != NULL && pWrkrData->batch.nmemb > 0) { + CHKiRet(submitBatch(pWrkrData)); + } else { + dbgprintf("omelasticsearch: endTransaction, pWrkrData->batch.data is NULL, " + "nothing to send. \n"); + } +finalize_it: +ENDendTransaction + +static rsRetVal +computeAuthHeader(char* uid, char* pwd, uchar** authBuf) { + int r; + DEFiRet; + + es_str_t* auth = es_newStr(1024); + if (auth == NULL) { + LogError(0, RS_RET_OUT_OF_MEMORY, + "omelasticsearch: failed to allocate es_str auth for auth header construction"); + ABORT_FINALIZE(RS_RET_ERR); + } + + r = es_addBuf(&auth, uid, strlen(uid)); + if(r == 0) r = es_addChar(&auth, ':'); + if(r == 0 && pwd != NULL) r = es_addBuf(&auth, pwd, strlen(pwd)); + if(r == 0) *authBuf = (uchar*) es_str2cstr(auth, NULL); + + if (r != 0 || *authBuf == NULL) { + LogError(0, RS_RET_ERR, "omelasticsearch: failed to build auth header\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + +finalize_it: + if (auth != NULL) + es_deleteStr(auth); + RETiRet; +} + +static void ATTR_NONNULL() +curlSetupCommon(wrkrInstanceData_t *const pWrkrData, CURL *const handle) +{ + PTR_ASSERT_SET_TYPE(pWrkrData, WRKR_DATA_TYPE_ES); + curl_easy_setopt(handle, CURLOPT_HTTPHEADER, pWrkrData->curlHeader); + curl_easy_setopt(handle, CURLOPT_NOSIGNAL, TRUE); + curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, curlResult); + curl_easy_setopt(handle, CURLOPT_WRITEDATA, pWrkrData); + if(pWrkrData->pData->allowUnsignedCerts) + curl_easy_setopt(handle, CURLOPT_SSL_VERIFYPEER, FALSE); + if(pWrkrData->pData->skipVerifyHost) + curl_easy_setopt(handle, CURLOPT_SSL_VERIFYHOST, FALSE); + if(pWrkrData->pData->authBuf != NULL) { + curl_easy_setopt(handle, CURLOPT_USERPWD, pWrkrData->pData->authBuf); + curl_easy_setopt(handle, CURLOPT_PROXYAUTH, CURLAUTH_ANY); + } + if(pWrkrData->pData->caCertFile) + curl_easy_setopt(handle, CURLOPT_CAINFO, pWrkrData->pData->caCertFile); + if(pWrkrData->pData->myCertFile) + curl_easy_setopt(handle, CURLOPT_SSLCERT, pWrkrData->pData->myCertFile); + if(pWrkrData->pData->myPrivKeyFile) + curl_easy_setopt(handle, CURLOPT_SSLKEY, pWrkrData->pData->myPrivKeyFile); + /* uncomment for in-dept debuggung: + curl_easy_setopt(handle, CURLOPT_VERBOSE, TRUE); */ +} + +static void ATTR_NONNULL() +curlCheckConnSetup(wrkrInstanceData_t *const pWrkrData) +{ + PTR_ASSERT_SET_TYPE(pWrkrData, WRKR_DATA_TYPE_ES); + curlSetupCommon(pWrkrData, pWrkrData->curlCheckConnHandle); + curl_easy_setopt(pWrkrData->curlCheckConnHandle, + CURLOPT_TIMEOUT_MS, pWrkrData->pData->healthCheckTimeout); +} + +static void ATTR_NONNULL(1) +curlPostSetup(wrkrInstanceData_t *const pWrkrData) +{ + PTR_ASSERT_SET_TYPE(pWrkrData, WRKR_DATA_TYPE_ES); + curlSetupCommon(pWrkrData, pWrkrData->curlPostHandle); + curl_easy_setopt(pWrkrData->curlPostHandle, CURLOPT_POST, 1); + curl_easy_setopt(pWrkrData->curlPostHandle, + CURLOPT_TIMEOUT_MS, pWrkrData->pData->indexTimeout); +} + +#define CONTENT_JSON "Content-Type: application/json; charset=utf-8" + +static rsRetVal ATTR_NONNULL() +curlSetup(wrkrInstanceData_t *const pWrkrData) +{ + DEFiRet; + pWrkrData->curlHeader = curl_slist_append(NULL, CONTENT_JSON); + CHKmalloc(pWrkrData->curlPostHandle = curl_easy_init());; + curlPostSetup(pWrkrData); + + CHKmalloc(pWrkrData->curlCheckConnHandle = curl_easy_init()); + curlCheckConnSetup(pWrkrData); + +finalize_it: + if(iRet != RS_RET_OK && pWrkrData->curlPostHandle != NULL) { + curl_easy_cleanup(pWrkrData->curlPostHandle); + pWrkrData->curlPostHandle = NULL; + } + RETiRet; +} + +static void ATTR_NONNULL() +setInstParamDefaults(instanceData *const pData) +{ + pData->serverBaseUrls = NULL; + pData->defaultPort = 9200; + pData->healthCheckTimeout = 3500; + pData->indexTimeout = 0; + pData->uid = NULL; + pData->pwd = NULL; + pData->authBuf = NULL; + pData->searchIndex = NULL; + pData->searchType = NULL; + pData->pipelineName = NULL; + pData->dynPipelineName = 0; + pData->skipPipelineIfEmpty = 0; + pData->parent = NULL; + pData->timeout = NULL; + pData->dynSrchIdx = 0; + pData->dynSrchType = 0; + pData->dynParent = 0; + pData->useHttps = 0; + pData->bulkmode = 0; + pData->maxbytes = 104857600; //100 MB Is the default max message size that ships with ElasticSearch + pData->allowUnsignedCerts = 0; + pData->skipVerifyHost = 0; + pData->tplName = NULL; + pData->errorFile = NULL; + pData->errorOnly=0; + pData->interleaved=0; + pData->dynBulkId= 0; + pData->bulkId = NULL; + pData->caCertFile = NULL; + pData->myCertFile = NULL; + pData->myPrivKeyFile = NULL; + pData->writeOperation = ES_WRITE_INDEX; + pData->retryFailures = 0; + pData->ratelimitBurst = 20000; + pData->ratelimitInterval = 600; + pData->ratelimiter = NULL; + pData->retryRulesetName = NULL; + pData->retryRuleset = NULL; + pData->rebindInterval = DEFAULT_REBIND_INTERVAL; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + char* serverParam = NULL; + struct cnfarray* servers = NULL; + int i; + int iNumTpls; + FILE *fp; + char errStr[1024]; +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "server")) { + servers = pvals[i].val.d.ar; + } else if(!strcmp(actpblk.descr[i].name, "errorfile")) { + pData->errorFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "erroronly")) { + pData->errorOnly = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "interleaved")) { + pData->interleaved = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "serverport")) { + pData->defaultPort = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "healthchecktimeout")) { + pData->healthCheckTimeout = (long) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "indextimeout")) { + pData->indexTimeout = (long) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "uid")) { + pData->uid = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "pwd")) { + pData->pwd = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "searchindex")) { + pData->searchIndex = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "searchtype")) { + pData->searchType = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "pipelinename")) { + pData->pipelineName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "dynpipelinename")) { + pData->dynPipelineName = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "skippipelineifempty")) { + pData->skipPipelineIfEmpty = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "parent")) { + pData->parent = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "dynsearchindex")) { + pData->dynSrchIdx = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "dynsearchtype")) { + pData->dynSrchType = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "dynparent")) { + pData->dynParent = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "bulkmode")) { + pData->bulkmode = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "maxbytes")) { + pData->maxbytes = (size_t) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "allowunsignedcerts")) { + pData->allowUnsignedCerts = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "skipverifyhost")) { + pData->skipVerifyHost = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "timeout")) { + pData->timeout = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "usehttps")) { + pData->useHttps = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "dynbulkid")) { + pData->dynBulkId = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "bulkid")) { + pData->bulkId = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "tls.cacert")) { + pData->caCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->caCertFile, "r"); + if(fp == NULL) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: 'tls.cacert' file %s couldn't be accessed: %s\n", + pData->caCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "tls.mycert")) { + pData->myCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->myCertFile, "r"); + if(fp == NULL) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: 'tls.mycert' file %s couldn't be accessed: %s\n", + pData->myCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "tls.myprivkey")) { + pData->myPrivKeyFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->myPrivKeyFile, "r"); + if(fp == NULL) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: 'tls.myprivkey' file %s couldn't be accessed: %s\n", + pData->myPrivKeyFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "writeoperation")) { + char *writeop = es_str2cstr(pvals[i].val.d.estr, NULL); + if (writeop && !strcmp(writeop, "create")) { + pData->writeOperation = ES_WRITE_CREATE; + } else if (writeop && !strcmp(writeop, "index")) { + pData->writeOperation = ES_WRITE_INDEX; + } else if (writeop) { + LogError(0, RS_RET_CONFIG_ERROR, + "omelasticsearch: invalid value '%s' for writeoperation: " + "must be one of 'index' or 'create' - using default value 'index'", writeop); + pData->writeOperation = ES_WRITE_INDEX; + } + free(writeop); + } else if(!strcmp(actpblk.descr[i].name, "retryfailures")) { + pData->retryFailures = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "ratelimit.burst")) { + pData->ratelimitBurst = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "ratelimit.interval")) { + pData->ratelimitInterval = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "retryruleset")) { + pData->retryRulesetName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "rebindinterval")) { + pData->rebindInterval = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "esversion.major")) { + pData->esVersion = pvals[i].val.d.n; + } else { + LogError(0, RS_RET_INTERNAL_ERROR, "omelasticsearch: program error, " + "non-handled param '%s'", actpblk.descr[i].name); + } + } + + if(pData->pwd != NULL && pData->uid == NULL) { + LogError(0, RS_RET_UID_MISSING, + "omelasticsearch: password is provided, but no uid " + "- action definition invalid"); + ABORT_FINALIZE(RS_RET_UID_MISSING); + } + if(pData->dynSrchIdx && pData->searchIndex == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, + "omelasticsearch: requested dynamic search index, but no " + "name for index template given - action definition invalid"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + if(pData->dynSrchType && pData->searchType == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, + "omelasticsearch: requested dynamic search type, but no " + "name for type template given - action definition invalid"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + if(pData->dynParent && pData->parent == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, + "omelasticsearch: requested dynamic parent, but no " + "name for parent template given - action definition invalid"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + if(pData->dynBulkId && pData->bulkId == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, + "omelasticsearch: requested dynamic bulkid, but no " + "name for bulkid template given - action definition invalid"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + if(pData->dynPipelineName && pData->pipelineName == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, + "omelasticsearch: requested dynamic pipeline name, but no " + "name for pipelineName template given - action definition invalid"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + + if (pData->uid != NULL) + CHKiRet(computeAuthHeader((char*) pData->uid, (char*) pData->pwd, &pData->authBuf)); + + iNumTpls = 1; + if(pData->dynSrchIdx) ++iNumTpls; + if(pData->dynSrchType) ++iNumTpls; + if(pData->dynParent) ++iNumTpls; + if(pData->dynBulkId) ++iNumTpls; + if(pData->dynPipelineName) ++iNumTpls; + DBGPRINTF("omelasticsearch: requesting %d templates\n", iNumTpls); + CODE_STD_STRING_REQUESTnewActInst(iNumTpls) + + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*)strdup((pData->tplName == NULL) ? + " StdJSONFmt" : (char*)pData->tplName), + OMSR_NO_RQD_TPL_OPTS)); + + + /* we need to request additional templates. If we have a dynamic search index, + * it will always be string 1. Type may be 1 or 2, depending on whether search + * index is dynamic as well. Rule needs to be followed throughout the module. + */ + iNumTpls = 1; + if(pData->dynSrchIdx) { + CHKiRet(OMSRsetEntry(*ppOMSR, iNumTpls, ustrdup(pData->searchIndex), + OMSR_NO_RQD_TPL_OPTS)); + ++iNumTpls; + } + if(pData->dynSrchType) { + CHKiRet(OMSRsetEntry(*ppOMSR, iNumTpls, ustrdup(pData->searchType), + OMSR_NO_RQD_TPL_OPTS)); + ++iNumTpls; + } + if(pData->dynParent) { + CHKiRet(OMSRsetEntry(*ppOMSR, iNumTpls, ustrdup(pData->parent), + OMSR_NO_RQD_TPL_OPTS)); + ++iNumTpls; + } + if(pData->dynBulkId) { + CHKiRet(OMSRsetEntry(*ppOMSR, iNumTpls, ustrdup(pData->bulkId), + OMSR_NO_RQD_TPL_OPTS)); + ++iNumTpls; + } + if(pData->dynPipelineName) { + CHKiRet(OMSRsetEntry(*ppOMSR, iNumTpls, ustrdup(pData->pipelineName), + OMSR_NO_RQD_TPL_OPTS)); + ++iNumTpls; + } + + + if (servers != NULL) { + pData->numServers = servers->nmemb; + pData->serverBaseUrls = malloc(servers->nmemb * sizeof(uchar*)); + if (pData->serverBaseUrls == NULL) { + LogError(0, RS_RET_ERR, "omelasticsearch: unable to allocate buffer " + "for ElasticSearch server configuration."); + ABORT_FINALIZE(RS_RET_ERR); + } + + for(i = 0 ; i < servers->nmemb ; ++i) { + serverParam = es_str2cstr(servers->arr[i], NULL); + if (serverParam == NULL) { + LogError(0, RS_RET_ERR, "omelasticsearch: unable to allocate buffer " + "for ElasticSearch server configuration."); + ABORT_FINALIZE(RS_RET_ERR); + } + /* Remove a trailing slash if it exists */ + const size_t serverParamLastChar = strlen(serverParam)-1; + if (serverParam[serverParamLastChar] == '/') { + serverParam[serverParamLastChar] = '\0'; + } + CHKiRet(computeBaseUrl(serverParam, pData->defaultPort, pData->useHttps, + pData->serverBaseUrls + i)); + free(serverParam); + serverParam = NULL; + } + } else { + LogMsg(0, RS_RET_OK, LOG_WARNING, + "omelasticsearch: No servers specified, using localhost"); + pData->numServers = 1; + pData->serverBaseUrls = malloc(sizeof(uchar*)); + if (pData->serverBaseUrls == NULL) { + LogError(0, RS_RET_ERR, "omelasticsearch: unable to allocate buffer " + "for ElasticSearch server configuration."); + ABORT_FINALIZE(RS_RET_ERR); + } + CHKiRet(computeBaseUrl("localhost", pData->defaultPort, pData->useHttps, pData->serverBaseUrls)); + } + + if(pData->esVersion < 8) { + if(pData->searchIndex == NULL) + pData->searchIndex = (uchar*) strdup("system"); + if(pData->searchType == NULL) + pData->searchType = (uchar*) strdup("events"); + + if ((pData->writeOperation != ES_WRITE_INDEX) && (pData->bulkId == NULL)) { + LogError(0, RS_RET_CONFIG_ERROR, + "omelasticsearch: writeoperation '%d' requires bulkid", pData->writeOperation); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + } + + if (pData->retryFailures) { + CHKiRet(ratelimitNew(&pData->ratelimiter, "omelasticsearch", NULL)); + ratelimitSetLinuxLike(pData->ratelimiter, pData->ratelimitInterval, pData->ratelimitBurst); + ratelimitSetNoTimeCache(pData->ratelimiter); + } + + /* node created, let's add to list of instance configs for the module */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = pData; + } else { + loadModConf->tail->next = pData; + loadModConf->tail = pData; + } + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); + if (serverParam) + free(serverParam); +ENDnewActInst + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->root = pModConf->tail = NULL; +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad + loadModConf = NULL; /* done loading */ +ENDendCnfLoad + + +BEGINcheckCnf + instanceConf_t *inst; +CODESTARTcheckCnf + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + ruleset_t *pRuleset; + rsRetVal localRet; + + if (inst->retryRulesetName) { + localRet = ruleset.GetRuleset(pModConf->pConf, &pRuleset, inst->retryRulesetName); + if(localRet == RS_RET_NOT_FOUND) { + LogError(0, localRet, "omelasticsearch: retryruleset '%s' not found - " + "no retry ruleset will be used", inst->retryRulesetName); + } else { + inst->retryRuleset = pRuleset; + } + } + } +ENDcheckCnf + + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINdoHUP +CODESTARTdoHUP + pthread_mutex_lock(&pData->mutErrFile); + if(pData->fdErrFile != -1) { + close(pData->fdErrFile); + pData->fdErrFile = -1; + } + pthread_mutex_unlock(&pData->mutErrFile); +ENDdoHUP + + +BEGINmodExit +CODESTARTmodExit + if(pInputName != NULL) + prop.Destruct(&pInputName); + curl_global_cleanup(); + statsobj.Destruct(&indexStats); + objRelease(statsobj, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); +ENDmodExit + +NO_LEGACY_CONF_parseSelectorAct + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_doHUP +CODEqueryEtryPt_TXIF_OMOD_QUERIES /* we support the transactional interface! */ +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + + if (curl_global_init(CURL_GLOBAL_ALL) != 0) { + LogError(0, RS_RET_OBJ_CREATION_FAILED, "CURL fail. -elasticsearch indexing disabled"); + ABORT_FINALIZE(RS_RET_OBJ_CREATION_FAILED); + } + + /* support statistics gathering */ + CHKiRet(statsobj.Construct(&indexStats)); + CHKiRet(statsobj.SetName(indexStats, (uchar *)"omelasticsearch")); + CHKiRet(statsobj.SetOrigin(indexStats, (uchar *)"omelasticsearch")); + STATSCOUNTER_INIT(indexSubmit, mutIndexSubmit); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"submitted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexSubmit)); + STATSCOUNTER_INIT(indexHTTPFail, mutIndexHTTPFail); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"failed.http", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexHTTPFail)); + STATSCOUNTER_INIT(indexHTTPReqFail, mutIndexHTTPReqFail); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"failed.httprequests", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexHTTPReqFail)); + STATSCOUNTER_INIT(checkConnFail, mutCheckConnFail); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"failed.checkConn", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &checkConnFail)); + STATSCOUNTER_INIT(indexESFail, mutIndexESFail); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"failed.es", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexESFail)); + STATSCOUNTER_INIT(indexSuccess, mutIndexSuccess); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"response.success", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexSuccess)); + STATSCOUNTER_INIT(indexBadResponse, mutIndexBadResponse); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"response.bad", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexBadResponse)); + STATSCOUNTER_INIT(indexDuplicate, mutIndexDuplicate); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"response.duplicate", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexDuplicate)); + STATSCOUNTER_INIT(indexBadArgument, mutIndexBadArgument); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"response.badargument", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexBadArgument)); + STATSCOUNTER_INIT(indexBulkRejection, mutIndexBulkRejection); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"response.bulkrejection", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexBulkRejection)); + STATSCOUNTER_INIT(indexOtherResponse, mutIndexOtherResponse); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"response.other", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &indexOtherResponse)); + STATSCOUNTER_INIT(rebinds, mutRebinds); + CHKiRet(statsobj.AddCounter(indexStats, (uchar *)"rebinds", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &rebinds)); + CHKiRet(statsobj.ConstructFinalize(indexStats)); + CHKiRet(prop.Construct(&pInputName)); + CHKiRet(prop.SetString(pInputName, UCHAR_CONSTANT("omelasticsearch"), sizeof("omelasticsearch") - 1)); + CHKiRet(prop.ConstructFinalize(pInputName)); +ENDmodInit + +/* vi:set ai: + */ diff --git a/plugins/omgssapi/Makefile.am b/plugins/omgssapi/Makefile.am new file mode 100644 index 0000000..a57a64b --- /dev/null +++ b/plugins/omgssapi/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = omgssapi.la + +omgssapi_la_SOURCES = omgssapi.c +omgssapi_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +omgssapi_la_LDFLAGS = -module -avoid-version +omgssapi_la_LIBADD = $(GSS_LIBS) diff --git a/plugins/omgssapi/Makefile.in b/plugins/omgssapi/Makefile.in new file mode 100644 index 0000000..7b364ff --- /dev/null +++ b/plugins/omgssapi/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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\ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omgssapi/omgssapi.c b/plugins/omgssapi/omgssapi.c new file mode 100644 index 0000000..9d9d12e --- /dev/null +++ b/plugins/omgssapi/omgssapi.c @@ -0,0 +1,720 @@ +/* omgssapi.c + * This is the implementation of the build-in forwarding output module. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * Copyright 2007-2017 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Rsyslog is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Rsyslog is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Rsyslog. If not, see <http://www.gnu.org/licenses/>. + * + * A copy of the GPL can be found in the file "COPYING" in this distribution. + */ +#include "config.h" +#ifdef USE_GSSAPI +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <netinet/in.h> +#include <netdb.h> +#include <fnmatch.h> +#include <assert.h> +#include <errno.h> +#include <ctype.h> +#include <unistd.h> +#include <zlib.h> +#include <pthread.h> +#include <gssapi/gssapi.h> +#include "dirty.h" +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "net.h" +#include "template.h" +#include "msg.h" +#include "cfsysline.h" +#include "module-template.h" +#include "gss-misc.h" +#include "tcpclt.h" +#include "glbl.h" +#include "errmsg.h" +#include "rsconf.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP + + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + +/* internal structures + */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(gssutil) +DEFobjCurrIf(tcpclt) + +typedef struct _instanceData { + char *f_hname; + short sock; /* file descriptor */ + enum { /* TODO: we shoud revisit these definitions */ + eDestFORW, + eDestFORW_SUSP, + eDestFORW_UNKN + } eDestState; + struct addrinfo *f_addr; + int compressionLevel; /* 0 - no compression, else level for zlib */ + char *port; + tcpclt_t *pTCPClt; /* our tcpclt object */ + gss_ctx_id_t gss_context; + OM_uint32 gss_flags; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +/* config data */ + +typedef enum gss_mode_e { + GSSMODE_MIC, + GSSMODE_ENC +} gss_mode_t; + +static struct configSettings_s { + uchar *pszTplName; /* name of the default template to use */ + char *gss_base_service_name; + gss_mode_t gss_mode; +} cs; + +static pthread_mutex_t mutDoAct = PTHREAD_MUTEX_INITIALIZER; + +/* get the syslog forward port from selector_t. The passed in + * struct must be one that is setup for forwarding. + * rgerhards, 2007-06-28 + * We may change the implementation to try to lookup the port + * if it is unspecified. So far, we use the IANA default auf 514. + */ +static const char * +getFwdSyslogPt(instanceData *pData) +{ + assert(pData != NULL); + if(pData->port == NULL) + return("514"); + else + return(pData->port); +} + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINfreeInstance +OM_uint32 maj_stat, min_stat; +CODESTARTfreeInstance + switch (pData->eDestState) { + case eDestFORW: + case eDestFORW_SUSP: + freeaddrinfo(pData->f_addr); + /* fall through */ + case eDestFORW_UNKN: + if(pData->port != NULL) + free(pData->port); + break; + } + + if (pData->gss_context != GSS_C_NO_CONTEXT) { + maj_stat = gss_delete_sec_context(&min_stat, &pData->gss_context, GSS_C_NO_BUFFER); + if (maj_stat != GSS_S_COMPLETE) + gssutil.display_status((char*)"deleting context", maj_stat, min_stat); + } + /* this is meant to be done when module is unloaded, + but since this module is static... + */ + free(cs.gss_base_service_name); + cs.gss_base_service_name = NULL; + + /* final cleanup */ + tcpclt.Destruct(&pData->pTCPClt); + if(pData->sock >= 0) + close(pData->sock); + + if(pData->f_hname != NULL) + free(pData->f_hname); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + printf("%s", pData->f_hname); +ENDdbgPrintInstInfo + + +/* This function is called immediately before a send retry is attempted. + * It shall clean up whatever makes sense. + * rgerhards, 2007-12-28 + */ +static rsRetVal TCPSendGSSPrepRetry(void __attribute__((unused)) *pData) +{ + /* in case of TCP/GSS, there is nothing to do */ + return RS_RET_OK; +} + + +static rsRetVal TCPSendGSSInit(void *pvData) +{ + DEFiRet; + int s = -1; + const char *base; + OM_uint32 maj_stat, min_stat, init_sec_min_stat, *sess_flags, ret_flags; + gss_buffer_desc out_tok, in_tok; + gss_buffer_t tok_ptr; + gss_name_t target_name; + gss_ctx_id_t *context; + instanceData *pData = (instanceData *) pvData; + + assert(pData != NULL); + + /* if the socket is already initialized, we are done */ + if(pData->sock > 0) + ABORT_FINALIZE(RS_RET_OK); + + base = (cs.gss_base_service_name == NULL) ? "host" : cs.gss_base_service_name; + out_tok.length = strlen(pData->f_hname) + strlen(base) + 2; + CHKmalloc(out_tok.value = malloc(out_tok.length)); + strcpy(out_tok.value, base); + strcat(out_tok.value, "@"); + strcat(out_tok.value, pData->f_hname); + dbgprintf("GSS-API service name: %s\n", (char*) out_tok.value); + + tok_ptr = GSS_C_NO_BUFFER; + context = &pData->gss_context; + *context = GSS_C_NO_CONTEXT; + + maj_stat = gss_import_name(&min_stat, &out_tok, GSS_C_NT_HOSTBASED_SERVICE, &target_name); + free(out_tok.value); + out_tok.value = NULL; + out_tok.length = 0; + + if (maj_stat != GSS_S_COMPLETE) { + gssutil.display_status((char*)"parsing name", maj_stat, min_stat); + goto fail; + } + + sess_flags = &pData->gss_flags; + *sess_flags = GSS_C_MUTUAL_FLAG; + if (cs.gss_mode == GSSMODE_MIC) { + *sess_flags |= GSS_C_INTEG_FLAG; + } + if (cs.gss_mode == GSSMODE_ENC) { + *sess_flags |= GSS_C_CONF_FLAG; + } + dbgprintf("GSS-API requested context flags:\n"); + gssutil.display_ctx_flags(*sess_flags); + + do { + maj_stat = gss_init_sec_context(&init_sec_min_stat, GSS_C_NO_CREDENTIAL, context, + target_name, GSS_C_NO_OID, *sess_flags, 0, NULL, + tok_ptr, NULL, &out_tok, &ret_flags, NULL); + if (tok_ptr != GSS_C_NO_BUFFER) + free(in_tok.value); + + if (maj_stat != GSS_S_COMPLETE + && maj_stat != GSS_S_CONTINUE_NEEDED) { + gssutil.display_status((char*)"initializing context", maj_stat, init_sec_min_stat); + goto fail; + } + + if (s == -1) + if ((s = pData->sock = tcpclt.CreateSocket(pData->f_addr)) == -1) + goto fail; + + if (out_tok.length != 0) { + dbgprintf("GSS-API Sending init_sec_context token (length: %ld)\n", (long) out_tok.length); + if (gssutil.send_token(s, &out_tok) < 0) { + goto fail; + } + } + gss_release_buffer(&min_stat, &out_tok); + + if (maj_stat == GSS_S_CONTINUE_NEEDED) { + dbgprintf("GSS-API Continue needed...\n"); + if (gssutil.recv_token(s, &in_tok) <= 0) { + goto fail; + } + tok_ptr = &in_tok; + } + } while (maj_stat == GSS_S_CONTINUE_NEEDED); + + dbgprintf("GSS-API Provided context flags:\n"); + *sess_flags = ret_flags; + gssutil.display_ctx_flags(*sess_flags); + + dbgprintf("GSS-API Context initialized\n"); + gss_release_name(&min_stat, &target_name); + +finalize_it: + RETiRet; + +fail: + LogError(0, RS_RET_GSS_SENDINIT_ERROR, "GSS-API Context initialization failed\n"); + gss_release_name(&min_stat, &target_name); + gss_release_buffer(&min_stat, &out_tok); + if (*context != GSS_C_NO_CONTEXT) { + gss_delete_sec_context(&min_stat, context, GSS_C_NO_BUFFER); + *context = GSS_C_NO_CONTEXT; + } + if (s != -1) + close(s); + pData->sock = -1; + ABORT_FINALIZE(RS_RET_GSS_SENDINIT_ERROR); +} + + +static rsRetVal TCPSendGSSSend(void *pvData, char *msg, size_t len) +{ + int s; + gss_ctx_id_t *context; + OM_uint32 maj_stat, min_stat; + gss_buffer_desc in_buf, out_buf; + instanceData *pData = (instanceData *) pvData; + + assert(pData != NULL); + assert(msg != NULL); + assert(len > 0); + + s = pData->sock; + context = &pData->gss_context; + in_buf.value = msg; + in_buf.length = len; + maj_stat = gss_wrap(&min_stat, *context, (cs.gss_mode == GSSMODE_ENC) ? 1 : 0, GSS_C_QOP_DEFAULT, + &in_buf, NULL, &out_buf); + if (maj_stat != GSS_S_COMPLETE) { + gssutil.display_status((char*)"wrapping message", maj_stat, min_stat); + goto fail; + } + + if (gssutil.send_token(s, &out_buf) < 0) { + goto fail; + } + gss_release_buffer(&min_stat, &out_buf); + + return RS_RET_OK; + +fail: + close(s); + pData->sock = -1; + gss_delete_sec_context(&min_stat, context, GSS_C_NO_BUFFER); + *context = GSS_C_NO_CONTEXT; + gss_release_buffer(&min_stat, &out_buf); + dbgprintf("message not (GSS/tcp)send"); + return RS_RET_GSS_SEND_ERROR; +} + + +/* try to resume connection if it is not ready + * rgerhards, 2007-08-02 + */ +static rsRetVal doTryResume(instanceData *pData) +{ + DEFiRet; + struct addrinfo *res; + struct addrinfo hints; + + switch (pData->eDestState) { + case eDestFORW_SUSP: + iRet = RS_RET_OK; /* the actual check happens during doAction() only */ + pData->eDestState = eDestFORW; + break; + + case eDestFORW_UNKN: + /* The remote address is not yet known and needs to be obtained */ + dbgprintf(" %s\n", pData->f_hname); + memset(&hints, 0, sizeof(hints)); + /* port must be numeric, because config file syntax requests this */ + /* TODO: this code is a duplicate from cfline() - we should later create + * a common function. + */ + hints.ai_flags = AI_NUMERICSERV; + hints.ai_family = glbl.GetDefPFFamily(runConf); + hints.ai_socktype = SOCK_STREAM; + if(getaddrinfo(pData->f_hname, getFwdSyslogPt(pData), &hints, &res) == 0) { + dbgprintf("%s found, resuming.\n", pData->f_hname); + pData->f_addr = res; + pData->eDestState = eDestFORW; + } else { + iRet = RS_RET_SUSPENDED; + } + break; + case eDestFORW: + /* NOOP */ + break; + } + + RETiRet; +} + + +BEGINtryResume +CODESTARTtryResume + pthread_mutex_lock(&mutDoAct); + iRet = doTryResume(pWrkrData->pData); + pthread_mutex_unlock(&mutDoAct); +ENDtryResume + +BEGINdoAction + char *psz = NULL; /* temporary buffering */ + register unsigned l; + int iMaxLine; + instanceData *pData; +CODESTARTdoAction + pthread_mutex_lock(&mutDoAct); + pData = pWrkrData->pData; + switch (pData->eDestState) { + case eDestFORW_SUSP: + dbgprintf("internal error in omgssapi.c, eDestFORW_SUSP in doAction()!\n"); + iRet = RS_RET_SUSPENDED; + break; + + case eDestFORW_UNKN: + dbgprintf("doAction eDestFORW_UNKN\n"); + iRet = doTryResume(pData); + break; + + case eDestFORW: + dbgprintf(" %s:%s/%s\n", pData->f_hname, getFwdSyslogPt(pData), "tcp-gssapi"); + iMaxLine = glbl.GetMaxLine(runConf); + psz = (char*) ppString[0]; + l = strlen((char*) psz); + if((int) l > iMaxLine) + l = iMaxLine; + + /* Check if we should compress and, if so, do it. We also + * check if the message is large enough to justify compression. + * The smaller the message, the less likely is a gain in compression. + * To save CPU cycles, we do not try to compress very small messages. + * What "very small" means needs to be configured. Currently, it is + * hard-coded but this may be changed to a config parameter. + * rgerhards, 2006-11-30 + */ + if(pData->compressionLevel && (l > CONF_MIN_SIZE_FOR_COMPRESS)) { + Bytef *out; + uLongf destLen = iMaxLine + iMaxLine/100 +12; /* recommended value from zlib doc */ + uLong srcLen = l; + int ret; + /* TODO: optimize malloc sequence? -- rgerhards, 2008-09-02 */ + CHKmalloc(out = (Bytef*) malloc(iMaxLine + iMaxLine/100 + 12)); + out[0] = 'z'; + out[1] = '\0'; + ret = compress2((Bytef*) out+1, &destLen, (Bytef*) psz, + srcLen, pData->compressionLevel); + dbgprintf("Compressing message, length was %d now %d, return state %d.\n", + l, (int) destLen, ret); + if(ret != Z_OK) { + /* if we fail, we complain, but only in debug mode + * Otherwise, we are silent. In any case, we ignore the + * failed compression and just sent the uncompressed + * data, which is still valid. So this is probably the + * best course of action. + * rgerhards, 2006-11-30 + */ + dbgprintf("Compression failed, sending uncompressed message\n"); + free(out); + } else if(destLen+1 < l) { + /* only use compression if there is a gain in using it! */ + dbgprintf("there is gain in compression, so we do it\n"); + psz = (char*) out; + l = destLen + 1; /* take care for the "z" at message start! */ + } else { + free(out); + } + ++destLen; + } + + CHKiRet_Hdlr(tcpclt.Send(pData->pTCPClt, pData, psz, l)) { + /* error! */ + dbgprintf("error forwarding via tcp, suspending\n"); + pData->eDestState = eDestFORW_SUSP; + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + break; + } +finalize_it: + if((psz != NULL) && (psz != (char*) ppString[0])) { + /* we need to free temporary buffer, alloced above - Naoya Nakazawa, 2010-01-11 */ + free(psz); + } + pthread_mutex_unlock(&mutDoAct); +ENDdoAction + + +BEGINparseSelectorAct + uchar *q; + int i; + int bErr; + struct addrinfo hints, *res; + TCPFRAMINGMODE tcp_framing = TCP_FRAMING_OCTET_STUFFING; +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* first check if this config line is actually for us + * The first test [*p == '>'] can be skipped if a module shall only + * support the newer slection syntax [:modname:]. This is in fact + * recommended for new modules. Please note that over time this part + * will be handled by rsyslogd itself, but for the time being it is + * a good compromise to do it at the module level. + * rgerhards, 2007-10-15 + */ + + if(!strncmp((char*) p, ":omgssapi:", sizeof(":omgssapi:") - 1)) { + p += sizeof(":omgssapi:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + } else { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + if((iRet = createInstance(&pData)) != RS_RET_OK) + goto finalize_it; + + /* we are now after the protocol indicator. Now check if we should + * use compression. We begin to use a new option format for this: + * @(option,option)host:port + * The first option defined is "z[0..9]" where the digit indicates + * the compression level. If it is not given, 9 (best compression) is + * assumed. An example action statement might be: + * @@(z5,o)127.0.0.1:1400 + * Which means send via TCP with medium (5) compresion (z) to the local + * host on port 1400. The '0' option means that octet-couting (as in + * IETF I-D syslog-transport-tls) is to be used for framing (this option + * applies to TCP-based syslog only and is ignored when specified with UDP). + * That is not yet implemented. + * rgerhards, 2006-12-07 + */ + if(*p == '(') { + /* at this position, it *must* be an option indicator */ + do { + ++p; /* eat '(' or ',' (depending on when called) */ + /* check options */ + if(*p == 'z') { /* compression */ + ++p; /* eat */ + if(isdigit((int) *p)) { + int iLevel; + iLevel = *p - '0'; + ++p; /* eat */ + pData->compressionLevel = iLevel; + } else { + LogError(0, NO_ERRCODE, "Invalid compression level '%c' specified in " + "forwarding action - NOT turning on compression.", + *p); + } + } else if(*p == 'o') { /* octet-couting based TCP framing? */ + ++p; /* eat */ + /* no further options settable */ + tcp_framing = TCP_FRAMING_OCTET_COUNTING; + } else { /* invalid option! Just skip it... */ + LogError(0, NO_ERRCODE, "Invalid option %c in forwarding action - " + "ignoring.", *p); + ++p; /* eat invalid option */ + } + /* the option processing is done. We now do a generic skip + * to either the next option or the end of the option + * block. + */ + while(*p && *p != ')' && *p != ',') + ++p; /* just skip it */ + } while(*p && *p == ','); /* Attention: do.. while() */ + if(*p == ')') + ++p; /* eat terminator, on to next */ + else + /* we probably have end of string - leave it for the rest + * of the code to handle it (but warn the user) + */ + LogError(0, NO_ERRCODE, "Option block not terminated in gssapi forward action."); + } + /* extract the host first (we do a trick - we replace the ';' or ':' with a '\0') + * now skip to port and then template name. rgerhards 2005-07-06 + */ + for(q = p ; *p && *p != ';' && *p != ':' && *p != '#' ; ++p) + /* JUST SKIP */; + + pData->port = NULL; + if(*p == ':') { /* process port */ + uchar * tmp; + + *p = '\0'; /* trick to obtain hostname (later)! */ + tmp = ++p; + for(i=0 ; *p && isdigit((int) *p) ; ++p, ++i) + /* SKIP AND COUNT */; + pData->port = malloc(i + 1); + if(pData->port == NULL) { + LogError(0, NO_ERRCODE, "Could not get memory to store syslog forwarding port, " + "using default port, results may not be what you intend\n"); + /* we leave f_forw.port set to NULL, this is then handled by + * getFwdSyslogPt(). + */ + } else { + memcpy(pData->port, tmp, i); + *(pData->port + i) = '\0'; + } + } + + + /* now skip to template */ + bErr = 0; + while(*p && *p != ';') { + if(*p && *p != ';' && !isspace((int) *p)) { + if(bErr == 0) { /* only 1 error msg! */ + bErr = 1; + errno = 0; + LogError(0, NO_ERRCODE, "invalid selector line (port), probably not doing " + "what was intended"); + } + } + ++p; + } + + /* TODO: make this if go away! */ + if(*p == ';' || *p == '#' || isspace(*p)) { + uchar cTmp = *p; + *p = '\0'; /* trick to obtain hostname (later)! */ + CHKmalloc(pData->f_hname = strdup((char*) q)); + *p = cTmp; + } else { + CHKmalloc(pData->f_hname = strdup((char*) q)); + } + + /* process template */ + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_NO_RQD_TPL_OPTS, + (cs.pszTplName == NULL) ? (uchar*)"RSYSLOG_TraditionalForwardFormat" : cs.pszTplName)); + + /* first set the pData->eDestState */ + memset(&hints, 0, sizeof(hints)); + /* port must be numeric, because config file syntax requests this */ + hints.ai_flags = AI_NUMERICSERV; + hints.ai_family = glbl.GetDefPFFamily(loadConf); + hints.ai_socktype = SOCK_STREAM; + if(getaddrinfo(pData->f_hname, getFwdSyslogPt(pData), &hints, &res) != 0) { + pData->eDestState = eDestFORW_UNKN; + } else { + pData->eDestState = eDestFORW; + pData->f_addr = res; + } + + /* now create our tcpclt */ + CHKiRet(tcpclt.Construct(&pData->pTCPClt)); + /* and set callbacks */ + CHKiRet(tcpclt.SetSendInit(pData->pTCPClt, TCPSendGSSInit)); + CHKiRet(tcpclt.SetSendFrame(pData->pTCPClt, TCPSendGSSSend)); + CHKiRet(tcpclt.SetSendPrepRetry(pData->pTCPClt, TCPSendGSSPrepRetry)); + CHKiRet(tcpclt.SetFraming(pData->pTCPClt, tcp_framing)); + + /* TODO: do we need to call freeInstance if we failed - this is a general question for + * all output modules. I'll address it lates as the interface evolves. rgerhards, 2007-07-25 + */ +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit + objRelease(glbl, CORE_COMPONENT); + objRelease(gssutil, LM_GSSUTIL_FILENAME); + objRelease(tcpclt, LM_TCPCLT_FILENAME); + + if(cs.pszTplName != NULL) { + free(cs.pszTplName); + cs.pszTplName = NULL; + } +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +ENDqueryEtryPt + + +/* set a new GSSMODE based on config directive */ +static rsRetVal setGSSMode(void __attribute__((unused)) *pVal, uchar *mode) +{ + DEFiRet; + + if (!strcmp((char *) mode, "integrity")) { + cs.gss_mode = GSSMODE_MIC; + dbgprintf("GSS-API gssmode set to GSSMODE_MIC\n"); + } else if (!strcmp((char *) mode, "encryption")) { + cs.gss_mode = GSSMODE_ENC; + dbgprintf("GSS-API gssmode set to GSSMODE_ENC\n"); + } else { + LogError(0, RS_RET_INVALID_PARAMS, "unknown gssmode parameter: %s", (char *) mode); + iRet = RS_RET_INVALID_PARAMS; + } + free(mode); + + RETiRet; +} + + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + cs.gss_mode = GSSMODE_ENC; + free(cs.gss_base_service_name); + cs.gss_base_service_name = NULL; + free(cs.pszTplName); + cs.pszTplName = NULL; + return RS_RET_OK; +} + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(gssutil, LM_GSSUTIL_FILENAME)); + CHKiRet(objUse(tcpclt, LM_TCPCLT_FILENAME)); + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"gssforwardservicename", 0, eCmdHdlrGetWord, NULL, + &cs.gss_base_service_name, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"gssmode", 0, eCmdHdlrGetWord, setGSSMode, &cs.gss_mode, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actiongssforwarddefaulttemplate", 0, eCmdHdlrGetWord, NULL, + &cs.pszTplName, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit + +#endif /* #ifdef USE_GSSAPI */ +/* vi:set ai: + */ diff --git a/plugins/omhdfs/Makefile.am b/plugins/omhdfs/Makefile.am new file mode 100644 index 0000000..95e6b10 --- /dev/null +++ b/plugins/omhdfs/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = omhdfs.la + +omhdfs_la_SOURCES = omhdfs.c +omhdfs_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) $(JAVA_INCLUDES) +omhdfs_la_LDFLAGS = -module -avoid-version -lhdfs $(JAVA_LIBS) +omhdfs_la_LIBADD = $(RSRT_LIBS) diff --git a/plugins/omhdfs/Makefile.in b/plugins/omhdfs/Makefile.in new file mode 100644 index 0000000..0aaa22a --- /dev/null +++ b/plugins/omhdfs/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <assert.h> +#include <errno.h> +#include <ctype.h> +#include <unistd.h> +#include <sys/file.h> +#include <pthread.h> +#ifdef HAVE_HDFS_H +# include <hdfs.h> +#endif +#ifdef HAVE_HADOOP_HDFS_H +# include <hadoop/hdfs.h> +#endif + +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "conf.h" +#include "cfsysline.h" +#include "module-template.h" +#include "unicode-helper.h" +#include "errmsg.h" +#include "hashtable.h" +#include "hashtable_itr.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +/* MODULE_CNFNAME("omhdfs") we need this only when we convert the module to v2 config system */ + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +/* global data */ +static struct hashtable *files; /* holds all file objects that we know */ +static pthread_mutex_t mutDoAct = PTHREAD_MUTEX_INITIALIZER; + +typedef struct configSettings_s { + uchar *fileName; + uchar *hdfsHost; + uchar *dfltTplName; /* default template name to use */ + int hdfsPort; +} configSettings_t; +static configSettings_t cs; + +typedef struct { + uchar *name; + hdfsFS fs; + hdfsFile fh; + const char *hdfsHost; + tPort hdfsPort; + int nUsers; + pthread_mutex_t mut; +} file_t; + + +typedef struct _instanceData { + file_t *pFile; + uchar ioBuf[64*1024]; + size_t offsBuf; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +/* forward definitions (down here, need data types) */ +static inline rsRetVal fileClose(file_t *pFile); + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + printf("omhdfs: file:%s", pData->pFile->name); +ENDdbgPrintInstInfo + + +/* note that hdfsFileExists() does not work, so we did our + * own function to see if a pathname exists. Returns 0 if the + * file does not exists, something else otherwise. Note that + * we can also check a directroy (if that matters...) + */ +static int +HDFSFileExists(hdfsFS fs, uchar *name) +{ + int r; + hdfsFileInfo *info; + + info = hdfsGetPathInfo(fs, (char*)name); + /* if things go wrong, we assume it is because the file + * does not exist. We do not get too much information... + */ + if(info == NULL) { + r = 0; + } else { + r = 1; + hdfsFreeFileInfo(info, 1); + } + return r; +} + +static inline rsRetVal +HDFSmkdir(hdfsFS fs, uchar *name) +{ + DEFiRet; + if(hdfsCreateDirectory(fs, (char*)name) == -1) + ABORT_FINALIZE(RS_RET_ERR); + +finalize_it: + RETiRet; +} + + +/* ---BEGIN FILE OBJECT---------------------------------------------------- */ +/* This code handles the "file object". This is split from the actual + * instance data, because several instances may write into the same file. + * If so, we need to use a single object, and also synchronize their writes. + * So we keep the file object separately, and just stick a reference into + * the instance data. + */ + +static rsRetVal +fileObjConstruct(file_t **ppFile) +{ + file_t *pFile; + DEFiRet; + + CHKmalloc(pFile = malloc(sizeof(file_t))); + pFile->name = NULL; + pFile->hdfsHost = NULL; + pFile->fh = NULL; + pFile->nUsers = 0; + + *ppFile = pFile; +finalize_it: + RETiRet; +} + +static void +fileObjAddUser(file_t *pFile) +{ + /* init mutex only when second user is added */ + ++pFile->nUsers; + if(pFile->nUsers == 2) + pthread_mutex_init(&pFile->mut, NULL); + DBGPRINTF("omhdfs: file %s now being used by %d actions\n", pFile->name, pFile->nUsers); +} + +static rsRetVal +fileObjDestruct(file_t **ppFile) +{ + file_t *pFile = *ppFile; + if(pFile->nUsers > 1) + pthread_mutex_destroy(&pFile->mut); + fileClose(pFile); + free(pFile->name); + free((char*)pFile->hdfsHost); + free(pFile->fh); + + return RS_RET_OK; +} + + +/* check, and potentially create, all names inside a path */ +static rsRetVal +filePrepare(file_t *pFile) +{ + uchar *p; + uchar *pszWork; + size_t len; + DEFiRet; + + if(HDFSFileExists(pFile->fs, pFile->name)) + FINALIZE; + + /* file does not exist, create it (and eventually parent directories */ + if(1) { // check if bCreateDirs + len = ustrlen(pFile->name) + 1; + CHKmalloc(pszWork = malloc(len)); + memcpy(pszWork, pFile->name, len); + for(p = pszWork+1 ; *p ; p++) + if(*p == '/') { + /* temporarily terminate string, create dir and go on */ + *p = '\0'; + if(!HDFSFileExists(pFile->fs, pszWork)) { + CHKiRet(HDFSmkdir(pFile->fs, pszWork)); + } + *p = '/'; + } + free(pszWork); + return 0; + } + +finalize_it: + RETiRet; +} + + +/* this function is to be used as destructor for the + * hash table code. + */ +static void +fileObjDestruct4Hashtable(void *ptr) +{ + file_t *pFile = (file_t*) ptr; + fileObjDestruct(&pFile); +} + + +static rsRetVal +fileOpen(file_t *pFile) +{ + DEFiRet; + + assert(pFile->fh == NULL); + if(pFile->nUsers > 1) + d_pthread_mutex_lock(&pFile->mut); + + DBGPRINTF("omhdfs: try to connect to HDFS at host '%s', port %d\n", + pFile->hdfsHost, pFile->hdfsPort); + pFile->fs = hdfsConnect(pFile->hdfsHost, pFile->hdfsPort); + if(pFile->fs == NULL) { + DBGPRINTF("omhdfs: error can not connect to hdfs\n"); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + CHKiRet(filePrepare(pFile)); + + pFile->fh = hdfsOpenFile(pFile->fs, (char*)pFile->name, O_WRONLY|O_APPEND, 0, 0, 0); + if(pFile->fh == NULL) { + /* maybe the file does not exist, so we try to create it now. + * Note that we can not use hdfsExists() because of a deficit in + * it: https://issues.apache.org/jira/browse/HDFS-1154 + * As of my testing, libhdfs at least seems to return ENOENT if + * the file does not exist. + */ + if(errno == ENOENT) { + DBGPRINTF("omhdfs: ENOENT trying to append to '%s', now trying create\n", + pFile->name); + pFile->fh = hdfsOpenFile(pFile->fs, + (char*)pFile->name, O_WRONLY|O_CREAT, 0, 0, 0); + } + } + if(pFile->fh == NULL) { + DBGPRINTF("omhdfs: failed to open %s for writing!\n", pFile->name); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + +finalize_it: + if(pFile->nUsers > 1) + d_pthread_mutex_unlock(&pFile->mut); + RETiRet; +} + + +/* Note: lenWrite is reset to zero on successful write! */ +static rsRetVal +fileWrite(file_t *pFile, uchar *buf, size_t *lenWrite) +{ + DEFiRet; + + if(*lenWrite == 0) + FINALIZE; + + if(pFile->nUsers > 1) + d_pthread_mutex_lock(&pFile->mut); + + /* open file if not open. This must be done *here* and while mutex-protected + * because of HUP handling (which is async to normal processing!). + */ + if(pFile->fh == NULL) { + fileOpen(pFile); + if(pFile->fh == NULL) { + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + } + + tSize num_written_bytes = hdfsWrite(pFile->fs, pFile->fh, buf, *lenWrite); + if((unsigned) num_written_bytes != *lenWrite) { + LogError(errno, RS_RET_ERR_HDFS_WRITE, + "omhdfs: failed to write %s, expected %lu bytes, " + "written %lu\n", pFile->name, (unsigned long) *lenWrite, + (unsigned long) num_written_bytes); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + *lenWrite = 0; + +finalize_it: + RETiRet; +} + + +static rsRetVal +fileClose(file_t *pFile) +{ + DEFiRet; + + if(pFile->fh == NULL) + FINALIZE; + + if(pFile->nUsers > 1) + d_pthread_mutex_lock(&pFile->mut); + + hdfsCloseFile(pFile->fs, pFile->fh); + pFile->fh = NULL; + + if(pFile->nUsers > 1) + d_pthread_mutex_unlock(&pFile->mut); + +finalize_it: + RETiRet; +} + +/* ---END FILE OBJECT---------------------------------------------------- */ + +/* This adds data to the output buffer and performs an actual write + * if the new data does not fit into the buffer. Note that we never write + * partial data records. Other actions may write into the same file, and if + * we would write partial records, data could become severely mixed up. + * Note that we must check of some new data arrived is large than our + * buffer. In that case, the new data will written with its own + * write operation. + */ +static rsRetVal +addData(instanceData *pData, uchar *buf) +{ + size_t len; + DEFiRet; + + len = strlen((char*)buf); + if(pData->offsBuf + len < sizeof(pData->ioBuf)) { + /* new data fits into remaining buffer */ + memcpy((char*) pData->ioBuf + pData->offsBuf, buf, len); + pData->offsBuf += len; + } else { + CHKiRet(fileWrite(pData->pFile, pData->ioBuf, &pData->offsBuf)); + if(len >= sizeof(pData->ioBuf)) { + CHKiRet(fileWrite(pData->pFile, buf, &len)); + } else { + memcpy((char*) pData->ioBuf + pData->offsBuf, buf, len); + pData->offsBuf += len; + } + } + + iRet = RS_RET_DEFER_COMMIT; +finalize_it: + RETiRet; +} + +BEGINcreateInstance +CODESTARTcreateInstance + pData->pFile = NULL; +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINfreeInstance +CODESTARTfreeInstance + if(pData->pFile != NULL) + fileObjDestruct(&pData->pFile); +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINtryResume + instanceData *pData = pWrkrData->pData; +CODESTARTtryResume + pthread_mutex_lock(&mutDoAct); + fileClose(pData->pFile); + fileOpen(pData->pFile); + if(pData->pFile->fh == NULL){ + dbgprintf("omhdfs: tried to resume file %s, but still no luck...\n", + pData->pFile->name); + iRet = RS_RET_SUSPENDED; + } + pthread_mutex_unlock(&mutDoAct); +ENDtryResume + + +BEGINbeginTransaction +CODESTARTbeginTransaction + DBGPRINTF("omhdfs: beginTransaction\n"); +ENDbeginTransaction + + +BEGINdoAction + instanceData *pData = pWrkrData->pData; +CODESTARTdoAction + DBGPRINTF("omhdfs: action to to write to %s\n", pData->pFile->name); + pthread_mutex_lock(&mutDoAct); + iRet = addData(pData, ppString[0]); + DBGPRINTF("omhdfs: done doAction\n"); + pthread_mutex_unlock(&mutDoAct); +ENDdoAction + + +BEGINendTransaction + instanceData *pData = pWrkrData->pData; +CODESTARTendTransaction + DBGPRINTF("omhdfs: endTransaction\n"); + pthread_mutex_lock(&mutDoAct); + if(pData->offsBuf != 0) { + DBGPRINTF("omhdfs: data unwritten at end of transaction, persisting...\n"); + iRet = fileWrite(pData->pFile, pData->ioBuf, &pData->offsBuf); + } + pthread_mutex_unlock(&mutDoAct); +ENDendTransaction + + +BEGINparseSelectorAct + file_t *pFile; + int r; + uchar *keybuf; +CODESTARTparseSelectorAct + + /* first check if this config line is actually for us */ + if(strncmp((char*) p, ":omhdfs:", sizeof(":omhdfs:") - 1)) { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + p += sizeof(":omhdfs:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + CHKiRet(createInstance(&pData)); + CODE_STD_STRING_REQUESTparseSelectorAct(1) + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, 0, + (cs.dfltTplName == NULL) ? (uchar*)"RSYSLOG_FileFormat" : cs.dfltTplName)); + + if(cs.fileName == NULL) { + LogError(0, RS_RET_ERR_HDFS_OPEN, "omhdfs: no file name specified, can not continue"); + ABORT_FINALIZE(RS_RET_FILE_NOT_SPECIFIED); + } + + pFile = hashtable_search(files, cs.fileName); + if(pFile == NULL) { + /* we need a new file object, this one not seen before */ + CHKiRet(fileObjConstruct(&pFile)); + CHKmalloc(pFile->name = cs.fileName); + CHKmalloc(keybuf = ustrdup(cs.fileName)); + cs.fileName = NULL; /* re-set, data passed to file object */ + CHKmalloc(pFile->hdfsHost = strdup((cs.hdfsHost == NULL) ? "default" : (char*) cs.hdfsHost)); + pFile->hdfsPort = cs.hdfsPort; + fileOpen(pFile); + if(pFile->fh == NULL){ + LogError(0, RS_RET_ERR_HDFS_OPEN, "omhdfs: failed to open %s - " + "retrying later", pFile->name); + iRet = RS_RET_SUSPENDED; + } + r = hashtable_insert(files, keybuf, pFile); + if(r == 0) + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + fileObjAddUser(pFile); + pData->pFile = pFile; + pData->offsBuf = 0; + +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINdoHUP + file_t *pFile; + struct hashtable_itr *itr; +CODESTARTdoHUP + DBGPRINTF("omhdfs: HUP received (file count %d)\n", hashtable_count(files)); + /* Iterator constructor only returns a valid iterator if + * the hashtable is not empty */ + itr = hashtable_iterator(files); + if(hashtable_count(files) > 0) + { + do { + pFile = (file_t *) hashtable_iterator_value(itr); + fileClose(pFile); + DBGPRINTF("omhdfs: HUP, closing file %s\n", pFile->name); + } while (hashtable_iterator_advance(itr)); + } +ENDdoHUP + + +/* Reset config variables for this module to default values. + * rgerhards, 2007-07-17 + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + cs.hdfsHost = NULL; + cs.hdfsPort = 0; + free(cs.fileName); + cs.fileName = NULL; + free(cs.dfltTplName); + cs.dfltTplName = NULL; + return RS_RET_OK; +} + + +BEGINmodExit +CODESTARTmodExit + if(files != NULL) + hashtable_destroy(files, 1); /* 1 => free all values automatically */ +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_TXIF_OMOD_QUERIES /* we support the transactional interface! */ +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_doHUP +ENDqueryEtryPt + + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + CHKmalloc(files = create_hashtable(20, hash_from_string, key_equals_string, + fileObjDestruct4Hashtable)); + + CHKiRet(regCfSysLineHdlr((uchar *)"omhdfsfilename", 0, eCmdHdlrGetWord, NULL, &cs.fileName, NULL)); + CHKiRet(regCfSysLineHdlr((uchar *)"omhdfshost", 0, eCmdHdlrGetWord, NULL, &cs.hdfsHost, NULL)); + CHKiRet(regCfSysLineHdlr((uchar *)"omhdfsport", 0, eCmdHdlrInt, NULL, &cs.hdfsPort, NULL)); + CHKiRet(regCfSysLineHdlr((uchar *)"omhdfsdefaulttemplate", 0, eCmdHdlrGetWord, NULL, &cs.dfltTplName, NULL)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); + DBGPRINTF("omhdfs: module compiled with rsyslog version %s.\n", VERSION); +CODEmodInit_QueryRegCFSLineHdlr +ENDmodInit diff --git a/plugins/omjournal/Makefile.am b/plugins/omjournal/Makefile.am new file mode 100644 index 0000000..4cfbbd9 --- /dev/null +++ b/plugins/omjournal/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = omjournal.la + +omjournal_la_SOURCES = omjournal.c +omjournal_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) $(LIBSYSTEMD_JOURNAL_CFLAGS) +omjournal_la_LDFLAGS = -module -avoid-version +omjournal_la_LIBADD = $(LIBSYSTEMD_JOURNAL_LIBS) + +EXTRA_DIST = diff --git a/plugins/omjournal/Makefile.in b/plugins/omjournal/Makefile.in new file mode 100644 index 0000000..623330d --- /dev/null +++ b/plugins/omjournal/Makefile.in @@ -0,0 +1,798 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omjournal/omjournal.c b/plugins/omjournal/omjournal.c new file mode 100644 index 0000000..7668db9 --- /dev/null +++ b/plugins/omjournal/omjournal.c @@ -0,0 +1,323 @@ +/* omjournal.c + * send messages to the Linux Journal. This is meant to be used + * in cases where journal serves as the whole system log database. + * Note that we may get into a loop if journald re-injects messages + * into the syslog stream and we read that via imuxsock. Thus there + * is an option in imuxsock to ignore messages from ourselves + * (actually from our pid). So there are some module-interdependencies. + * + * Copyright 2013-2017 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include "conf.h" +#include "cfsysline.h" +#include <json.h> +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include <systemd/sd-journal.h> +#include "unicode-helper.h" +#include <sys/uio.h> +#include "parserif.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omjournal") + + +DEF_OMOD_STATIC_DATA + +/* config variables */ + + +typedef struct _instanceData { + uchar *tplName; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +static struct cnfparamdescr actpdescr[] = { + { "template", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ +}; +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->tplName); +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->tplName = NULL; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + DBGPRINTF("newActInst (mmjournal)\n"); + pvals = nvlstGetParams(lst, &actpblk, NULL); + if(pvals == NULL) { + parser_errmsg("error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + CODE_STD_STRING_REQUESTnewActInst(1) + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + + if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("ommongodb: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + if(pData->tplName == NULL) { + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + } else { + CHKiRet(OMSRsetEntry(*ppOMSR, 0, ustrdup(pData->tplName), + OMSR_TPL_AS_JSON)); + } + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +static struct iovec * +build_iovec(size_t *retargc, struct json_object *json) +{ + struct iovec *iov; + const char *key; + const char *val; + size_t key_len; + size_t val_len; + size_t vec_len; + size_t i; + + const size_t argc = json_object_object_length(json); + if(argc == 0) + return NULL; + iov = malloc( sizeof(struct iovec) * argc ); + if(NULL == iov) + goto fail; + + /* note: as we know the number of subobjects, we use the for loop + * to iterate over them instead of the _iter_ API. This is guaranteed + * to work. The somewhat cleaner case causes clang static analyzer to + * complain and we need to avoid that. + */ + struct json_object_iterator it = json_object_iter_begin(json); + for(i = 0 ; i < argc ; ++i) { + key = json_object_iter_peek_name(&it); + val = json_object_get_string(json_object_iter_peek_value(&it)); + + key_len = strlen(key); + val_len = strlen(val); + // vec length is len(key=val) + vec_len = key_len + val_len + 1; + + char *buf = malloc(vec_len + 1); + if(NULL == buf) + goto fail; + + memcpy(buf, key, key_len); + memcpy(buf + key_len, "=", 1); + memcpy(buf + key_len + 1, val, val_len+1); + + iov[i].iov_base = buf; + iov[i].iov_len = vec_len; + + json_object_iter_next(&it); + } + *retargc = argc; + return iov; + +fail: + if( NULL == iov) + return NULL; + + size_t j; + // iterate over any iovecs that were initalised above and free them. + for(j = 0; j < i; j++) { + free(iov[j].iov_base); + } + + free(iov); + return NULL; +} + + +static void +send_non_template_message(smsg_t *const __restrict__ pMsg) +{ + uchar *tag; + int lenTag; + int sev; + + MsgGetSeverity(pMsg, &sev); + getTAG(pMsg, &tag, &lenTag, LOCK_MUTEX); + /* we can use more properties here, but let's see if there + * is some real user interest. We can always add later... + */ + sd_journal_send("MESSAGE=%s", getMSG(pMsg), + "PRIORITY=%d", sev, + "SYSLOG_FACILITY=%d", pMsg->iFacility, + "SYSLOG_IDENTIFIER=%s", tag, + NULL); +} + +static void +send_template_message(struct json_object *const __restrict__ json) +{ + size_t argc; + struct iovec *iovec; + size_t i; + + iovec = build_iovec(&argc, json); + if( NULL != iovec) { + sd_journal_sendv(iovec, argc); + for (i =0; i< argc; i++) + free(iovec[i].iov_base); + free(iovec); + } +} + +BEGINdoAction_NoStrings + instanceData *pData; +CODESTARTdoAction + pData = pWrkrData->pData; + + if (pData->tplName == NULL) { + send_non_template_message((smsg_t*) ((void**)pMsgData)[0]); + } else { + send_template_message((struct json_object*) ((void**)pMsgData)[0]); + } +ENDdoAction + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +NO_LEGACY_CONF_parseSelectorAct + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + DBGPRINTF("omjournal: module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git a/plugins/omkafka/Makefile.am b/plugins/omkafka/Makefile.am new file mode 100644 index 0000000..dd7b69a --- /dev/null +++ b/plugins/omkafka/Makefile.am @@ -0,0 +1,18 @@ +pkglib_LTLIBRARIES = omkafka.la + +if OMKAFKA_USE_DUMMY +omkafka_la_SOURCES = dummy.c +omkafka_la_LDFLAGS = -module -avoid-version +omkafka_la_CPPFLAGS = -I$(top_srcdir) $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) -D MODNAME=omkafka +else +omkafka_la_SOURCES = omkafka.c +if ENABLE_KAFKA_STATIC +omkafka_la_LDFLAGS = -module -avoid-version -Wl,--whole-archive -l:librdkafka-static.a -Wl,--no-whole-archive -ldl -lresolv -lcurl -lssl -lpthread -lcrypto -lsasl2 -lz -llz4 -lrt -lm +else +omkafka_la_LDFLAGS = -module -avoid-version $(LIBRDKAFKA_LIBS) -lm +endif +omkafka_la_CPPFLAGS = -I$(top_srcdir) $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +endif + +omkafka_la_LIBADD = +EXTRA_DIST = diff --git a/plugins/omkafka/Makefile.in b/plugins/omkafka/Makefile.in new file mode 100644 index 0000000..c0148d0 --- /dev/null +++ b/plugins/omkafka/Makefile.in @@ -0,0 +1,815 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-pkglibLTLIBRARIES + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \ + clean-generic clean-libtool clean-pkglibLTLIBRARIES \ + cscopelist-am ctags ctags-am distclean distclean-compile \ + distclean-generic distclean-libtool distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omkafka/dummy.c b/plugins/omkafka/dummy.c new file mode 100644 index 0000000..fe8c249 --- /dev/null +++ b/plugins/omkafka/dummy.c @@ -0,0 +1,171 @@ +/* a dummy module to be loaded if we cannot build this module, but + * configure required it to be "optional". + * + * Copyright 2020 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include <pthread.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" + +#define MODULE_NAME(x) #x + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME(MODULE_NAME(MODNAME)) + + +DEF_OMOD_STATIC_DATA + +/* config variables */ +typedef struct _instanceData { + char *dummy; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +struct modConfData_s { +}; + +/* modConf ptr to use for the current load process */ +static modConfData_t *loadModConf = NULL; +/* modConf ptr to use for the current exec process */ +static modConfData_t *runModConf = NULL; + + + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINsetModCnf +CODESTARTsetModCnf + (void) lst; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME)); +ENDsetModCnf + + +BEGINnewActInst +CODESTARTnewActInst + (void) pData; + (void) ppModData; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME)); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +BEGINdoAction_NoStrings +CODESTARTdoAction + (void) pMsgData; +ENDdoAction + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + /* we only support the current interface specification */ + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + dbgprintf("dummy module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git a/plugins/omkafka/omkafka.c b/plugins/omkafka/omkafka.c new file mode 100644 index 0000000..e8eae08 --- /dev/null +++ b/plugins/omkafka/omkafka.c @@ -0,0 +1,2141 @@ +/* omkafka.c + * This output plugin make rsyslog talk to Apache Kafka. + * + * Copyright 2014-2017 by Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> +#include <assert.h> +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <sys/uio.h> +#include <sys/queue.h> +#include <sys/types.h> +#include <math.h> +#ifdef HAVE_SYS_STAT_H +# include <sys/stat.h> +#endif +#include <unistd.h> +#include <librdkafka/rdkafka.h> + +#include "rsyslog.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "atomic.h" +#include "statsobj.h" +#include "unicode-helper.h" +#include "datetime.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omkafka") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(datetime) +DEFobjCurrIf(strm) +DEFobjCurrIf(statsobj) + +statsobj_t *kafkaStats; +STATSCOUNTER_DEF(ctrQueueSize, mutCtrQueueSize); +STATSCOUNTER_DEF(ctrTopicSubmit, mutCtrTopicSubmit); +STATSCOUNTER_DEF(ctrKafkaFail, mutCtrKafkaFail); +STATSCOUNTER_DEF(ctrCacheMiss, mutCtrCacheMiss); +STATSCOUNTER_DEF(ctrCacheEvict, mutCtrCacheEvict); +STATSCOUNTER_DEF(ctrCacheSkip, mutCtrCacheSkip); +STATSCOUNTER_DEF(ctrKafkaAck, mutCtrKafkaAck); +STATSCOUNTER_DEF(ctrKafkaMsgTooLarge, mutCtrKafkaMsgTooLarge); +STATSCOUNTER_DEF(ctrKafkaUnknownTopic, mutCtrKafkaUnknownTopic); +STATSCOUNTER_DEF(ctrKafkaQueueFull, mutCtrKafkaQueueFull); +STATSCOUNTER_DEF(ctrKafkaUnknownPartition, mutCtrKafkaUnknownPartition); +STATSCOUNTER_DEF(ctrKafkaOtherErrors, mutCtrKafkaOtherErrors); +STATSCOUNTER_DEF(ctrKafkaRespTimedOut, mutCtrKafkaRespTimedOut); +STATSCOUNTER_DEF(ctrKafkaRespTransport, mutCtrKafkaRespTransport); +STATSCOUNTER_DEF(ctrKafkaRespBrokerDown, mutCtrKafkaRespBrokerDown); +STATSCOUNTER_DEF(ctrKafkaRespAuth, mutCtrKafkaRespAuth); +STATSCOUNTER_DEF(ctrKafkaRespSSL, mutCtrKafkaRespSSL); +STATSCOUNTER_DEF(ctrKafkaRespOther, mutCtrKafkaRespOther); + +#define MAX_ERRMSG 1024 /* max size of error messages that we support */ + +#ifndef SLIST_INIT +#define SLIST_INIT(head) do { \ + (head)->slh_first = NULL; \ +} while (/*CONSTCOND*/0) +#endif + +#ifndef SLIST_ENTRY +#define SLIST_ENTRY(type) \ + struct { \ + struct type *sle_next; /* next element */ \ + } +#endif + +#ifndef SLIST_HEAD +#define SLIST_HEAD(name, type) \ +struct name { \ + struct type *slh_first; /* first element */ \ +} +#endif + +#ifndef SLIST_INSERT_HEAD +#define SLIST_INSERT_HEAD(head, elm, field) do { \ + (elm)->field.sle_next = (head)->slh_first; \ + (head)->slh_first = (elm); \ +} while (/*CONSTCOND*/0) +#endif + +#ifndef SLIST_REMOVE_HEAD +#define SLIST_REMOVE_HEAD(head, field) do { \ + (head)->slh_first = (head)->slh_first->field.sle_next; \ +} while (/*CONSTCOND*/0) +#endif + +#ifndef SLIST_FIRST +#define SLIST_FIRST(head) ((head)->slh_first) +#endif + +#ifndef SLIST_NEXT +#define SLIST_NEXT(elm, field) ((elm)->field.sle_next) +#endif + +#ifndef SLIST_EMPTY +#define SLIST_EMPTY(head) ((head)->slh_first == NULL) +#endif + +#ifndef SLIST_REMOVE +#define SLIST_REMOVE(head, elm, type, field) do { \ + if ((head)->slh_first == (elm)) { \ + SLIST_REMOVE_HEAD((head), field); \ + } \ + else { \ + struct type *curelm = (head)->slh_first; \ + while(curelm->field.sle_next != (elm)) \ + curelm = curelm->field.sle_next; \ + curelm->field.sle_next = curelm->field.sle_next->field.sle_next; \ + } \ +} while (/*CONSTCOND*/0) +#endif + +#define NO_FIXED_PARTITION -1 /* signifies that no fixed partition config exists */ + +struct kafka_params { + const char *name; + const char *val; +}; + +#ifndef O_LARGEFILE +#define O_LARGEFILE 0 +#endif + +/* flags for writeKafka: shall we resubmit a failed message? */ +#define RESUBMIT 1 +#define NO_RESUBMIT 0 + +#ifdef HAVE_ATOMIC_BUILTINS64 +static uint64 clockTopicAccess = 0; +#else +static unsigned clockTopicAccess = 0; +#endif +/* and the "tick" function */ +#ifndef HAVE_ATOMIC_BUILTINS +static pthread_mutex_t mutClock; +#endif +static uint64 +getClockTopicAccess(void) +{ +#ifdef HAVE_ATOMIC_BUILTINS64 + return ATOMIC_INC_AND_FETCH_uint64(&clockTopicAccess, &mutClock); +#else + return ATOMIC_INC_AND_FETCH_unsigned(&clockTopicAccess, &mutClock); +#endif +} + +/* Needed for Kafka timestamp librdkafka > 0.9.4 */ +#define KAFKA_TimeStamp "\"%timestamp:::date-unixtimestamp%\"" + +static int closeTimeout = 1000; +static pthread_mutex_t closeTimeoutMut = PTHREAD_MUTEX_INITIALIZER; + +/* stats callback window metrics */ +static uint64 rtt_avg_usec; +static uint64 throttle_avg_msec; +static uint64 int_latency_avg_usec; + +/* dynamic topic cache */ +struct s_dynaTopicCacheEntry { + uchar *pName; + rd_kafka_topic_t *pTopic; + uint64 clkTickAccessed; + pthread_rwlock_t lock; +}; +typedef struct s_dynaTopicCacheEntry dynaTopicCacheEntry; + +/* Struct for Failed Messages Listitems */ +struct s_failedmsg_entry { + uchar* key; + uchar* payload; + uchar* topicname; + SLIST_ENTRY(s_failedmsg_entry) entries; /* List. */ +} ; +typedef struct s_failedmsg_entry failedmsg_entry; + +typedef struct _instanceData { + uchar *topic; + sbool dynaKey; + sbool dynaTopic; + dynaTopicCacheEntry **dynCache; + pthread_mutex_t mutDynCache; + rd_kafka_topic_t *pTopic; + int iCurrElt; + int iCurrCacheSize; + int bReportErrs; + int iDynaTopicCacheSize; + uchar *tplName; /* assigned output template */ + char *brokers; + sbool autoPartition; + int fixedPartition; + int nPartitions; + uint32_t currPartition; + DEF_ATOMIC_HELPER_MUT(mutCurrPartition); + int nConfParams; + struct kafka_params *confParams; + int nTopicConfParams; + struct kafka_params *topicConfParams; + uchar *errorFile; + uchar *key; + int bReopenOnHup; + int bResubmitOnFailure; /* Resubmit failed messages into kafka queue*/ + int bKeepFailedMessages;/* Keep Failed messages in memory, + only works if bResubmitOnFailure is enabled */ + uchar *failedMsgFile; /* file in which failed messages are being stored on + shutdown and loaded on startup */ + + int fdErrFile; /* error file fd or -1 if not open */ + pthread_mutex_t mutErrFile; + uchar *statsFile; + int fdStatsFile; /* stats file fd or -1 if not open */ + pthread_mutex_t mutStatsFile; + int bIsOpen; + int bIsSuspended; /* when broker fail, we need to suspend the action */ + pthread_rwlock_t rkLock; + pthread_mutex_t mut_doAction; /* make sure one wrkr instance max in parallel */ + rd_kafka_t *rk; + int closeTimeout; + SLIST_HEAD(failedmsg_listhead, s_failedmsg_entry) failedmsg_head; + + uchar *statsName; + statsobj_t *stats; + STATSCOUNTER_DEF(ctrTopicSubmit, mutCtrTopicSubmit); + STATSCOUNTER_DEF(ctrKafkaFail, mutCtrKafkaFail); + STATSCOUNTER_DEF(ctrKafkaAck, mutCtrKafkaAck); +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +#define INST_STATSCOUNTER_INC(inst, ctr, mut) \ + do { \ + if (inst->stats) { STATSCOUNTER_INC(ctr, mut); } \ + } while(0); + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "topic", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "dynatopic", eCmdHdlrBinary, 0 }, + { "dynatopic.cachesize", eCmdHdlrInt, 0 }, + { "dynakey", eCmdHdlrBinary, 0 }, + { "partitions.auto", eCmdHdlrBinary, 0 }, /* use librdkafka's automatic partitioning function */ + { "partitions.number", eCmdHdlrPositiveInt, 0 }, + { "partitions.usefixed", eCmdHdlrNonNegInt, 0 }, /* expert parameter, "nails" partition */ + { "broker", eCmdHdlrArray, 0 }, + { "confparam", eCmdHdlrArray, 0 }, + { "topicconfparam", eCmdHdlrArray, 0 }, + { "errorfile", eCmdHdlrGetWord, 0 }, + { "statsfile", eCmdHdlrGetWord, 0 }, + { "key", eCmdHdlrGetWord, 0 }, + { "template", eCmdHdlrGetWord, 0 }, + { "closetimeout", eCmdHdlrPositiveInt, 0 }, + { "reopenonhup", eCmdHdlrBinary, 0 }, + { "resubmitonfailure", eCmdHdlrBinary, 0 }, /* Resubmit message into kafaj queue on failure */ + { "keepfailedmessages", eCmdHdlrBinary, 0 }, + { "failedmsgfile", eCmdHdlrGetWord, 0 }, + { "statsname", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars +ENDinitConfVars + +static uint32_t +getPartition(instanceData *const __restrict__ pData) +{ + if (pData->autoPartition) { + return RD_KAFKA_PARTITION_UA; + } else { + return (pData->fixedPartition == NO_FIXED_PARTITION) ? + ATOMIC_INC_AND_FETCH_unsigned(&pData->currPartition, + &pData->mutCurrPartition) % pData->nPartitions + : (unsigned) pData->fixedPartition; + } +} + +/* must always be called with appropriate locks taken */ +static void +free_topic(rd_kafka_topic_t **topic) +{ + if (*topic != NULL) { + DBGPRINTF("omkafka: closing topic %s\n", rd_kafka_topic_name(*topic)); + rd_kafka_topic_destroy(*topic); + *topic = NULL; + } +} + +static void ATTR_NONNULL(1) +failedmsg_entry_destruct(failedmsg_entry *const __restrict__ fmsgEntry) { + free(fmsgEntry->key); + free(fmsgEntry->payload); + free(fmsgEntry->topicname); + free(fmsgEntry); +} + +/* note: we need the length of message as we need to deal with + * non-NUL terminated strings under some circumstances. + */ +static failedmsg_entry * ATTR_NONNULL(3,5) +failedmsg_entry_construct(const char *const key, const size_t keylen, const char *const msg, +const size_t msglen, const char *const topicname) +{ + failedmsg_entry *etry = NULL; + + if((etry = malloc(sizeof(struct s_failedmsg_entry))) == NULL) { + return NULL; + } + + if (key) { + if((etry->key = (uchar*)malloc(keylen+1)) == NULL) { + free(etry); + return NULL; + } + memcpy(etry->key, key, keylen); + etry->key[keylen] = '\0'; + } else { + etry->key=NULL; + } + + if((etry->payload = (uchar*)malloc(msglen+1)) == NULL) { + free(etry->key); + free(etry); + return NULL; + } + memcpy(etry->payload, msg, msglen); + etry->payload[msglen] = '\0'; + if((etry->topicname = (uchar*)strdup(topicname)) == NULL) { + free(etry->key); + free(etry->payload); + free(etry); + return NULL; + } + return etry; +} + +/* destroy topic item */ +/* must be called with write(rkLock) */ +static void +closeTopic(instanceData *__restrict__ const pData) +{ + free_topic(&pData->pTopic); +} + +/* these dynaTopic* functions are only slightly modified versions of those found in omfile.c. + * check the sources in omfile.c for more descriptive comments about each of these functions. + * i will only put the bare descriptions in this one. 2015-01-09 - Tait Clarridge + */ + +/* delete a cache entry from the dynamic topic cache */ +/* must be called with lock(mutDynCache) */ +static rsRetVal +dynaTopicDelCacheEntry(instanceData *__restrict__ const pData, const int iEntry, const int bFreeEntry) +{ + dynaTopicCacheEntry **pCache = pData->dynCache; + DEFiRet; + assert(pCache != NULL); + + if(pCache[iEntry] == NULL) + FINALIZE; + pthread_rwlock_wrlock(&pCache[iEntry]->lock); + + DBGPRINTF("Removing entry %d for topic '%s' from dynaCache.\n", iEntry, + pCache[iEntry]->pName == NULL ? UCHAR_CONSTANT("[OPEN FAILED]") : pCache[iEntry]->pName); + + if(pCache[iEntry]->pName != NULL) { + free(pCache[iEntry]->pName); + pCache[iEntry]->pName = NULL; + } + + pthread_rwlock_unlock(&pCache[iEntry]->lock); + + if(bFreeEntry) { + pthread_rwlock_destroy(&pCache[iEntry]->lock); + free(pCache[iEntry]); + pCache[iEntry] = NULL; + } + +finalize_it: + RETiRet; +} + +/* clear the entire dynamic topic cache */ +static void +dynaTopicFreeCacheEntries(instanceData *__restrict__ const pData) +{ + register int i; + assert(pData != NULL); + + pthread_mutex_lock(&pData->mutDynCache); + for(i = 0 ; i < pData->iCurrCacheSize ; ++i) { + dynaTopicDelCacheEntry(pData, i, 1); + } + pData->iCurrElt = -1; /* invalidate current element */ + pthread_mutex_unlock(&pData->mutDynCache); +} + +/* create the topic object */ +/* must be called with _atleast_ read(rkLock) */ +static rsRetVal +createTopic(instanceData *__restrict__ const pData, const uchar *__restrict__ const newTopicName, +rd_kafka_topic_t** topic) { +/* Get a new topic conf */ + rd_kafka_topic_conf_t *const topicconf = rd_kafka_topic_conf_new(); + char errstr[MAX_ERRMSG]; + rd_kafka_topic_t *rkt = NULL; + DEFiRet; + + *topic = NULL; + + if(topicconf == NULL) { + LogError(0, RS_RET_KAFKA_ERROR, + "omkafka: error creating kafka topic conf obj: %s\n", + rd_kafka_err2str(rd_kafka_last_error())); + ABORT_FINALIZE(RS_RET_KAFKA_ERROR); + } + for(int i = 0 ; i < pData->nTopicConfParams ; ++i) { + DBGPRINTF("omkafka: setting custom topic configuration parameter: %s:%s\n", + pData->topicConfParams[i].name, + pData->topicConfParams[i].val); + if(rd_kafka_topic_conf_set(topicconf, pData->topicConfParams[i].name, + pData->topicConfParams[i].val, errstr, sizeof(errstr)) != RD_KAFKA_CONF_OK) { + if(pData->bReportErrs) { + LogError(0, RS_RET_PARAM_ERROR, "error in kafka " + "topic conf parameter '%s=%s': %s", + pData->topicConfParams[i].name, + pData->topicConfParams[i].val, errstr); + } else { + DBGPRINTF("omkafka: setting custom topic configuration parameter '%s=%s': %s", + pData->topicConfParams[i].name, + pData->topicConfParams[i].val, errstr); + } + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + } + rkt = rd_kafka_topic_new(pData->rk, (char *)newTopicName, topicconf); + if(rkt == NULL) { + LogError(0, RS_RET_KAFKA_ERROR, + "omkafka: error creating kafka topic: %s\n", + rd_kafka_err2str(rd_kafka_last_error())); + ABORT_FINALIZE(RS_RET_KAFKA_ERROR); + } + *topic = rkt; +finalize_it: + RETiRet; +} + +/* create the topic object */ +/* must be called with write(rkLock) */ +static rsRetVal +prepareTopic(instanceData *__restrict__ const pData, const uchar *__restrict__ const newTopicName) +{ + DEFiRet; + iRet = createTopic(pData, newTopicName, &pData->pTopic); + if(iRet != RS_RET_OK) { + if(pData->pTopic != NULL) { + closeTopic(pData); + } + } + RETiRet; +} + +/* check dynamic topic cache for existence of the already created topic. + * if it does not exist, create a new one, or if we are currently using it + * as of the last message, keep using it. + * + * must be called with read(rkLock) + * must be called with mutDynCache locked + */ +static rsRetVal ATTR_NONNULL() +prepareDynTopic(instanceData *__restrict__ const pData, const uchar *__restrict__ const newTopicName, + rd_kafka_topic_t** topic, pthread_rwlock_t** lock) +{ + uint64 ctOldest; + int iOldest; + int i; + int iFirstFree; + rsRetVal localRet; + dynaTopicCacheEntry **pCache; + dynaTopicCacheEntry *entry = NULL; + rd_kafka_topic_t *tmpTopic = NULL; + DEFiRet; + assert(pData != NULL); + assert(newTopicName != NULL); + + pCache = pData->dynCache; + /* first check, if we still have the current topic */ + if ((pData->iCurrElt != -1) + && !ustrcmp(newTopicName, pCache[pData->iCurrElt]->pName)) { + /* great, we are all set */ + pCache[pData->iCurrElt]->clkTickAccessed = getClockTopicAccess(); + entry = pCache[pData->iCurrElt]; + STATSCOUNTER_INC(ctrCacheSkip, mutCtrCacheSkip); + FINALIZE; + } + + /* ok, no luck. Now let's search the table if we find a matching spot. + * While doing so, we also prepare for creation of a new one. + */ + pData->iCurrElt = -1; + iFirstFree = -1; + iOldest = 0; + ctOldest = getClockTopicAccess(); + for(i = 0 ; i < pData->iCurrCacheSize ; ++i) { + if(pCache[i] == NULL || pCache[i]->pName == NULL) { + if(iFirstFree == -1) + iFirstFree = i; + } else { /*got an element, let's see if it matches */ + if(!ustrcmp(newTopicName, pCache[i]->pName)) { + /* we found our element! */ + entry = pCache[i]; + pData->iCurrElt = i; + /* update "timestamp" for LRU */ + pCache[i]->clkTickAccessed = getClockTopicAccess(); + FINALIZE; + } + /* did not find it - so lets keep track of the counters for LRU */ + if(pCache[i]->clkTickAccessed < ctOldest) { + ctOldest = pCache[i]->clkTickAccessed; + iOldest = i; + } + } + } + STATSCOUNTER_INC(ctrCacheMiss, mutCtrCacheMiss); + + /* invalidate iCurrElt as we may error-exit out of this function when the currrent + * iCurrElt has been freed or otherwise become unusable. This is a precaution, and + * performance-wise it may be better to do that in each of the exits. However, that + * is error-prone, so I prefer to do it here. -- rgerhards, 2010-03-02 + */ + pData->iCurrElt = -1; + + if(iFirstFree == -1 && (pData->iCurrCacheSize < pData->iDynaTopicCacheSize)) { + /* there is space left, so set it to that index */ + iFirstFree = pData->iCurrCacheSize++; + } + + if(iFirstFree == -1) { + dynaTopicDelCacheEntry(pData, iOldest, 0); + STATSCOUNTER_INC(ctrCacheEvict, mutCtrCacheEvict); + iFirstFree = iOldest; /* this one *is* now free ;) */ + } else { + pCache[iFirstFree] = NULL; + } + /* we need to allocate memory for the cache structure */ + if(pCache[iFirstFree] == NULL) { + CHKmalloc(pCache[iFirstFree] = + (dynaTopicCacheEntry*) calloc(1, sizeof(dynaTopicCacheEntry))); + CHKiRet(pthread_rwlock_init(&pCache[iFirstFree]->lock, NULL)); + } + + /* Ok, we finally can open the topic */ + localRet = createTopic(pData, newTopicName, &tmpTopic); + + if(localRet != RS_RET_OK) { + LogError(0, localRet, "Could not open dynamic topic '%s' " + "[state %d] - discarding message", + newTopicName, localRet); + ABORT_FINALIZE(localRet); + } + + if((pCache[iFirstFree]->pName = ustrdup(newTopicName)) == NULL) { + free_topic(&tmpTopic); + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + pCache[iFirstFree]->pTopic = tmpTopic; + pCache[iFirstFree]->clkTickAccessed = getClockTopicAccess(); + entry = pCache[iFirstFree]; + pData->iCurrElt = iFirstFree; + DBGPRINTF("Added new entry %d for topic cache, topic '%s'.\n", iFirstFree, newTopicName); + +finalize_it: + if (iRet == RS_RET_OK) { + *topic = entry->pTopic; + *lock = &entry->lock; + } + RETiRet; +} + +/* write data error request/replies to separate error file + * Note: we open the file but never close it before exit. If it + * needs to be closed, HUP must be sent. + */ +static rsRetVal +writeDataError(instanceData *const pData, + const char *const __restrict__ data, + const size_t lenData, + const int kafkaErr) +{ + int bLocked = 0; + struct json_object *json = NULL; + DEFiRet; + + if(pData->errorFile == NULL) { + FINALIZE; + } + + json = json_object_new_object(); + if(json == NULL) { + ABORT_FINALIZE(RS_RET_ERR); + } + struct json_object *jval; + jval = json_object_new_int(kafkaErr); + json_object_object_add(json, "errcode", jval); + jval = json_object_new_string(rd_kafka_err2str(kafkaErr)); + json_object_object_add(json, "errmsg", jval); + jval = json_object_new_string_len(data, lenData); + json_object_object_add(json, "data", jval); + + struct iovec iov[2]; + iov[0].iov_base = (void*) json_object_get_string(json); + iov[0].iov_len = strlen(iov[0].iov_base); + iov[1].iov_base = (char *) "\n"; + iov[1].iov_len = 1; + + /* we must protect the file write do operations due to other wrks & HUP */ + pthread_mutex_lock(&pData->mutErrFile); + bLocked = 1; + if(pData->fdErrFile == -1) { + pData->fdErrFile = open((char*)pData->errorFile, + O_WRONLY|O_CREAT|O_APPEND|O_LARGEFILE|O_CLOEXEC, + S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP); + if(pData->fdErrFile == -1) { + LogError(errno, RS_RET_ERR, "omkafka: error opening error file %s", + pData->errorFile); + ABORT_FINALIZE(RS_RET_ERR); + } + } + + /* Note: we do not do real error-handling on the err file, as this + * complicates things way to much. + */ + const ssize_t nwritten = writev(pData->fdErrFile, iov, sizeof(iov)/sizeof(struct iovec)); + if(nwritten != (ssize_t) iov[0].iov_len + 1) { + LogError(errno, RS_RET_ERR, + "omkafka: error writing error file, write returns %lld\n", + (long long) nwritten); + } + +finalize_it: + if(bLocked) + pthread_mutex_unlock(&pData->mutErrFile); + if(json != NULL) + json_object_put(json); + RETiRet; +} + +/* write librdkafka stats object to a file + * Note: we open the file but never close it before exit. If it + * needs to be closed, HUP must be sent. + * Assumes pData->statsFile != NULL. + */ +static rsRetVal +writeStats(instanceData *const pData, + char *statsData, + const size_t lenData) +{ + int bLocked = 0; + DEFiRet; + + /* Protect the file write from operations due to other wrks & HUP */ + pthread_mutex_lock(&pData->mutStatsFile); + bLocked = 1; + if(pData->fdStatsFile == -1) { + pData->fdStatsFile = open((char*)pData->statsFile, + O_WRONLY|O_CREAT|O_APPEND|O_LARGEFILE|O_CLOEXEC, + S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP); + if(pData->fdStatsFile == -1) { + LogError(errno, RS_RET_ERR, "omkafka: error opening stats file %s", + pData->statsFile); + ABORT_FINALIZE(RS_RET_ERR); + } + } + + ssize_t nwritten = write(pData->fdStatsFile, statsData, lenData); + nwritten += write(pData->fdStatsFile, "\n", 1); + if(nwritten != (ssize_t) lenData + 1) { + LogError(errno, RS_RET_ERR, + "omkafka: error writing stats file, write returns %lld, expected %lld\n", + (long long) nwritten, (long long)(lenData + 1)); + } + +finalize_it: + if(bLocked) + pthread_mutex_unlock(&pData->mutStatsFile); + RETiRet; +} + +/* identify and count specific types of kafka failures. + */ +static rsRetVal +updateKafkaFailureCounts(rd_kafka_resp_err_t err) { + DEFiRet; + if (err == RD_KAFKA_RESP_ERR_MSG_SIZE_TOO_LARGE) { + STATSCOUNTER_INC(ctrKafkaMsgTooLarge, mutCtrKafkaMsgTooLarge); + } else if (err == RD_KAFKA_RESP_ERR__UNKNOWN_TOPIC) { + STATSCOUNTER_INC(ctrKafkaUnknownTopic, mutCtrKafkaUnknownTopic); + } else if (err == RD_KAFKA_RESP_ERR__QUEUE_FULL) { + STATSCOUNTER_INC(ctrKafkaQueueFull, mutCtrKafkaQueueFull); + } else if (err == RD_KAFKA_RESP_ERR__UNKNOWN_PARTITION) { + STATSCOUNTER_INC(ctrKafkaUnknownPartition, mutCtrKafkaUnknownPartition); + } else { + STATSCOUNTER_INC(ctrKafkaOtherErrors, mutCtrKafkaOtherErrors); + } + + RETiRet; +} + +/* must be called with read(rkLock) + * b_do_resubmit tells if we shall resubmit on error or not. This is needed + * when we submit already resubmitted messages. + */ +static rsRetVal ATTR_NONNULL(1, 3) +writeKafka(instanceData *const pData, uchar *const key, uchar *const msg, + uchar *const msgTimestamp, uchar *const topic, const int b_do_resubmit) +{ + DEFiRet; + const int partition = getPartition(pData); + rd_kafka_topic_t *rkt = NULL; + pthread_rwlock_t *dynTopicLock = NULL; + failedmsg_entry* fmsgEntry; + int topic_mut_locked = 0; + rd_kafka_resp_err_t msg_kafka_response; +#if RD_KAFKA_VERSION >= 0x00090400 + int64_t ttMsgTimestamp; +#else + int msg_enqueue_status = 0; +#endif + + DBGPRINTF("omkafka: trying to send: key:'%s', msg:'%s', timestamp:'%s'\n", + key, msg, msgTimestamp); + + if(pData->dynaTopic) { + DBGPRINTF("omkafka: topic to insert to: %s\n", topic); + /* ensure locking happens all inside this function */ + pthread_mutex_lock(&pData->mutDynCache); + const rsRetVal localRet = prepareDynTopic(pData, topic, &rkt, &dynTopicLock); + if (localRet == RS_RET_OK) { + pthread_rwlock_rdlock(dynTopicLock); + topic_mut_locked = 1; + } + pthread_mutex_unlock(&pData->mutDynCache); + CHKiRet(localRet); + } else { + rkt = pData->pTopic; + } + +#if RD_KAFKA_VERSION >= 0x00090400 + if (msgTimestamp == NULL) { + /* Resubmitted items don't have a timestamp */ + ttMsgTimestamp = 0; + } else { + ttMsgTimestamp = atoi((char*)msgTimestamp); /* Convert timestamp into int */ + ttMsgTimestamp *= 1000; /* Timestamp in Milliseconds for kafka */ + } + DBGPRINTF("omkafka: rd_kafka_producev timestamp=%s/%" PRId64 "\n", msgTimestamp, ttMsgTimestamp); + + /* Using new kafka producev API, includes Timestamp! */ + if (key == NULL) { + msg_kafka_response = rd_kafka_producev(pData->rk, + RD_KAFKA_V_RKT(rkt), + RD_KAFKA_V_PARTITION(partition), + RD_KAFKA_V_VALUE(msg, strlen((char*)msg)), + RD_KAFKA_V_MSGFLAGS(RD_KAFKA_MSG_F_COPY), + RD_KAFKA_V_TIMESTAMP(ttMsgTimestamp), + RD_KAFKA_V_KEY(NULL, 0), + RD_KAFKA_V_END); + } else { + DBGPRINTF("omkafka: rd_kafka_producev key=%s\n", key); + msg_kafka_response = rd_kafka_producev(pData->rk, + RD_KAFKA_V_RKT(rkt), + RD_KAFKA_V_PARTITION(partition), + RD_KAFKA_V_VALUE(msg, strlen((char*)msg)), + RD_KAFKA_V_MSGFLAGS(RD_KAFKA_MSG_F_COPY), + RD_KAFKA_V_TIMESTAMP(ttMsgTimestamp), + RD_KAFKA_V_KEY(key,strlen((char*)key)), + RD_KAFKA_V_END); + } + + if (msg_kafka_response != RD_KAFKA_RESP_ERR_NO_ERROR ) { + updateKafkaFailureCounts(msg_kafka_response); + + /* Put into kafka queue, again if configured! */ + if (pData->bResubmitOnFailure && + b_do_resubmit && + msg_kafka_response != RD_KAFKA_RESP_ERR_MSG_SIZE_TOO_LARGE) { + DBGPRINTF("omkafka: Failed to produce to topic '%s' (rd_kafka_producev)" + "partition %d: '%d/%s' - adding MSG '%s' to failed for RETRY!\n", + rd_kafka_topic_name(rkt), partition, msg_kafka_response, + rd_kafka_err2str(msg_kafka_response), msg); + CHKmalloc(fmsgEntry = failedmsg_entry_construct((char*) key, key ? strlen((char*)key) : 0, + (char*) msg, strlen((char*)msg),rd_kafka_topic_name(rkt))); + SLIST_INSERT_HEAD(&pData->failedmsg_head, fmsgEntry, entries); + } else { + LogError(0, RS_RET_KAFKA_PRODUCE_ERR, + "omkafka: Failed to produce to topic '%s' (rd_kafka_producev)" + "partition %d: %d/%s - KEY '%s' -MSG '%s'\n", + rd_kafka_topic_name(rkt), partition, msg_kafka_response, + rd_kafka_err2str(msg_kafka_response), key, msg); + } + } +#else + + DBGPRINTF("omkafka: rd_kafka_produce\n"); + /* Using old kafka produce API */ + msg_enqueue_status = rd_kafka_produce(rkt, partition, RD_KAFKA_MSG_F_COPY, + msg, strlen((char*)msg), key, + key ? strlen((char*)key) : 0, + NULL); + if(msg_enqueue_status == -1) { + msg_kafka_response = rd_kafka_last_error(); + updateKafkaFailureCounts(msg_kafka_response); + + /* Put into kafka queue, again if configured! */ + if (pData->bResubmitOnFailure && + b_do_resubmit && + msg_kafka_response != RD_KAFKA_RESP_ERR_MSG_SIZE_TOO_LARGE) { + DBGPRINTF("omkafka: Failed to produce to topic '%s' (rd_kafka_produce)" + "partition %d: '%d/%s' - adding MSG '%s' KEY '%s' to failed for RETRY!\n", + rd_kafka_topic_name(rkt), partition, msg_kafka_response, + rd_kafka_err2str(rd_kafka_errno2err(errno)), msg, key ? (const char*) key : ""); + CHKmalloc(fmsgEntry = failedmsg_entry_construct((char*) key, key ? strlen((char*)key) : 0, + (char*) msg, strlen((char*)msg),rd_kafka_topic_name(rkt))); + SLIST_INSERT_HEAD(&pData->failedmsg_head, fmsgEntry, entries); + } else { + LogError(0, RS_RET_KAFKA_PRODUCE_ERR, + "omkafka: Failed to produce to topic '%s' (rd_kafka_produce) " + "partition %d: %d/%s - MSG '%s' KEY '%s'\n", + rd_kafka_topic_name(rkt), partition, msg_kafka_response, + rd_kafka_err2str(msg_kafka_response), msg, key); + } + } +#endif + + const int callbacksCalled = rd_kafka_poll(pData->rk, 0); /* call callbacks */ + DBGPRINTF("omkafka: writeKafka kafka outqueue length: %d, callbacks called %d\n", + rd_kafka_outq_len(pData->rk), callbacksCalled); + +#if RD_KAFKA_VERSION >= 0x00090400 + if (msg_kafka_response != RD_KAFKA_RESP_ERR_NO_ERROR) { +#else + if (msg_enqueue_status == -1) { +#endif + STATSCOUNTER_INC(ctrKafkaFail, mutCtrKafkaFail); + INST_STATSCOUNTER_INC(pData, pData->ctrKafkaFail, pData->mutCtrKafkaFail); + ABORT_FINALIZE(RS_RET_KAFKA_PRODUCE_ERR); + /* ABORT_FINALIZE isn't absolutely necessary as of now, + because this is the last line anyway, but its useful to ensure + correctness in case we add more stuff below this line at some point*/ + } + +finalize_it: + if(topic_mut_locked) { + pthread_rwlock_unlock(dynTopicLock); + } + DBGPRINTF("omkafka: writeKafka returned %d\n", iRet); + if(iRet != RS_RET_OK) { + iRet = RS_RET_SUSPENDED; + } + STATSCOUNTER_SETMAX_NOMUT(ctrQueueSize, (unsigned) rd_kafka_outq_len(pData->rk)); + STATSCOUNTER_INC(ctrTopicSubmit, mutCtrTopicSubmit); + INST_STATSCOUNTER_INC(pData, pData->ctrTopicSubmit, pData->mutCtrTopicSubmit); + RETiRet; +} + +static void +deliveryCallback(rd_kafka_t __attribute__((unused)) *rk, + const rd_kafka_message_t *rkmessage, + void *opaque) +{ + instanceData *const pData = (instanceData *) opaque; + failedmsg_entry* fmsgEntry; + DEFiRet; + + if (rkmessage->err) { + updateKafkaFailureCounts(rkmessage->err); + + /* Put into kafka queue, again if configured! */ + if (pData->bResubmitOnFailure) { + DBGPRINTF("omkafka: kafka delivery FAIL on Topic '%s', msg '%.*s', key '%.*s' -" + " adding to FAILED MSGs for RETRY!\n", + rd_kafka_topic_name(rkmessage->rkt), + (int)(rkmessage->len-1), (char*)rkmessage->payload, + (int)(rkmessage->key_len), (char*)rkmessage->key); + CHKmalloc(fmsgEntry = failedmsg_entry_construct(rkmessage->key, rkmessage->key_len, + rkmessage->payload, rkmessage->len,rd_kafka_topic_name(rkmessage->rkt))); + SLIST_INSERT_HEAD(&pData->failedmsg_head, fmsgEntry, entries); + } else { + LogError(0, RS_RET_ERR, + "omkafka: kafka delivery FAIL on Topic '%s', msg '%.*s', key '%.*s'\n", + rd_kafka_topic_name(rkmessage->rkt), + (int)(rkmessage->len-1), (char*)rkmessage->payload, + (int)(rkmessage->key_len), (char*)rkmessage->key); + writeDataError(pData, (char*) rkmessage->payload, rkmessage->len, rkmessage->err); + } + STATSCOUNTER_INC(ctrKafkaFail, mutCtrKafkaFail); + INST_STATSCOUNTER_INC(pData, pData->ctrKafkaFail, pData->mutCtrKafkaFail); + } else { + DBGPRINTF("omkafka: kafka delivery SUCCESS on msg '%.*s'\n", (int)(rkmessage->len-1), + (char*)rkmessage->payload); + STATSCOUNTER_INC(ctrKafkaAck, mutCtrKafkaAck); + INST_STATSCOUNTER_INC(pData, pData->ctrKafkaAck, pData->mutCtrKafkaAck); + } +finalize_it: + if(iRet != RS_RET_OK) { + DBGPRINTF("omkafka: deliveryCallback returned failure %d\n", iRet); + } +} + +/** + * This function looks for a json object that corresponds to the + * passed name and returns it is found. Otherwise returns NULL. + * It will be used for processing stats callback json object. + */ +static struct fjson_object * +get_object(struct fjson_object *fj_obj, const char * name) { + struct fjson_object_iterator it = fjson_object_iter_begin(fj_obj); + struct fjson_object_iterator itEnd = fjson_object_iter_end(fj_obj); + while (!fjson_object_iter_equal (&it, &itEnd)) { + const char * key = fjson_object_iter_peek_name (&it); + struct fjson_object * val = fjson_object_iter_peek_value(&it); + if(!strncmp(key, name, strlen(name))){ + return val; + } + fjson_object_iter_next (&it); + } + + return NULL; +} + +/** + * This function performs a two level search in stats callback json + * object. It iterates over broker objects and for each broker object + * returns desired level2 value (such as avg/min/max) for specified + * level1 window statistic (such as rtt/throttle/int_latency). Threshold + * allows skipping values that are too small, so that they don't + * impact on aggregate averaged value that is returned. + */ +static uint64 +jsonExtractWindoStats(struct fjson_object * stats_object, + const char * level1_obj_name, const char * level2_obj_name, + unsigned long skip_threshold) { + uint64 level2_val; + uint64 agg_val = 0; + uint64 ret_val = 0; + int active_brokers = 0; + + struct fjson_object * brokers_obj = get_object(stats_object, "brokers"); + if (brokers_obj == NULL) { + LogMsg(0, NO_ERRCODE, LOG_ERR, "jsonExtractWindowStat: failed to find brokers object"); + return ret_val; + } + + /* iterate over borkers to get level1 window objects at level2 (min, max, avg, etc.) */ + struct fjson_object_iterator it = fjson_object_iter_begin(brokers_obj); + struct fjson_object_iterator itEnd = fjson_object_iter_end(brokers_obj); + while (!fjson_object_iter_equal (&it, &itEnd)) { + struct fjson_object * val = fjson_object_iter_peek_value(&it); + struct fjson_object * level1_obj = get_object(val, level1_obj_name); + if(level1_obj == NULL) + return ret_val; + + struct fjson_object * level2_obj = get_object(level1_obj, level2_obj_name); + if(level2_obj == NULL) + return ret_val; + + level2_val = fjson_object_get_int64(level2_obj); + if (level2_val > skip_threshold) { + agg_val += level2_val; + active_brokers++; + } + fjson_object_iter_next (&it); + } + if(active_brokers > 0) { + ret_val = agg_val/active_brokers; + } + + return ret_val; +} + +/** + * librdkafka will call this function after every statistics.interval.ms + * interval, which is specified in confParam. See the explanation at: + * https://github.com/edenhill/librdkafka/wiki/Statistics + * + * Here we have extracted windows stats: rtt, throttle time, and internal + * latency averages. These values will be logged as impstats messages. + */ +static int +statsCallback(rd_kafka_t __attribute__((unused)) *rk, + char *json, size_t __attribute__((unused)) json_len, + void __attribute__((unused)) *opaque) { + instanceData *const pData = (instanceData *) opaque; + char buf[2048]; + char handler_name[1024] = "unknown"; + int replyq = 0; + int msg_cnt = 0; + int msg_size = 0; + uint64 msg_max = 0; + uint64 msg_size_max = 0; + + struct fjson_object * stats_object = NULL; + struct fjson_object * fj_obj = NULL; + + DBGPRINTF("omkafka: librdkafka stats callback: %s\n", json); + + /* prepare fjson object from stats callback for parsing */ + stats_object = fjson_tokener_parse(json); + if (stats_object == NULL) { + LogMsg(0, NO_ERRCODE, LOG_ERR, "statsCallback: fjson tokenizer failed:"); + return 0; + } + enum fjson_type type = fjson_object_get_type(stats_object); + if (type != fjson_type_object) { + LogMsg(0, NO_ERRCODE, LOG_ERR, "statsCallback: json is not of type object; can't process statsCB\n"); + return 0; + } + + /* top level stats extraction through libfastjson based parsing */ + fj_obj = get_object(stats_object, "name"); + if (fj_obj != NULL) + snprintf(handler_name, sizeof(handler_name), "%s", (char *)fjson_object_get_string(fj_obj)); + fj_obj = get_object(stats_object, "replyq"); + replyq = (fj_obj == NULL) ? 0 : fjson_object_get_int(fj_obj); + fj_obj = get_object(stats_object, "msg_cnt"); + msg_cnt = (fj_obj == NULL) ? 0 : fjson_object_get_int(fj_obj); + fj_obj = get_object(stats_object, "msg_size"); + msg_size = (fj_obj == NULL) ? 0 : fjson_object_get_int(fj_obj); + fj_obj = get_object(stats_object, "msg_max"); + msg_max = (fj_obj == NULL) ? 0 : fjson_object_get_int64(fj_obj); + fj_obj = get_object(stats_object, "msg_size_max"); + msg_size_max = (fj_obj == NULL) ? 0 : fjson_object_get_int64(fj_obj); + + /* window stats extraction to be picked up by impstats counters */ + rtt_avg_usec = jsonExtractWindoStats(stats_object, "rtt", "avg", 100); + throttle_avg_msec = jsonExtractWindoStats(stats_object, "throttle", "avg", 0); + int_latency_avg_usec = jsonExtractWindoStats(stats_object, "int_latency", "avg", 0); + json_object_put (stats_object); + + /* emit a log line to get stats visibility per librdkafka client */ + snprintf(buf, sizeof(buf), + "statscb_window_stats: handler_name=%s replyq=%d msg_cnt=%d msg_size=%d " + "msg_max=%lld msg_size_max=%lld rtt_avg_usec=%lld throttle_avg_msec=%lld " + "int_latency_avg_usec=%lld", + handler_name, replyq, msg_cnt, msg_size, msg_max, msg_size_max, + rtt_avg_usec, throttle_avg_msec, int_latency_avg_usec); + LogMsg(0, NO_ERRCODE, LOG_INFO, "%s\n", buf); + + /* Write the entire json stats object, if requested */ + if (pData->statsFile != NULL) + writeStats(pData, json, json_len); + + return 0; +} + +static void +kafkaLogger(const rd_kafka_t __attribute__((unused)) *rk, int level, + const char *fac, const char *buf) +{ + DBGPRINTF("omkafka: kafka log message [%d,%s]: %s\n", + level, fac, buf); +} + +/* should be called with write(rkLock) */ +static void +do_rd_kafka_destroy(instanceData *const __restrict__ pData) +{ + if (pData->rk == NULL) { + DBGPRINTF("omkafka: onDestroy can't close, handle wasn't open\n"); + goto done; + } + int queuedCount = rd_kafka_outq_len(pData->rk); + DBGPRINTF("omkafka: onDestroy closing - items left in outqueue: %d\n", queuedCount); + + struct timespec tOut; + timeoutComp(&tOut, pData->closeTimeout); + + while (timeoutVal(&tOut) > 0) { + queuedCount = rd_kafka_outq_len(pData->rk); + if (queuedCount > 0) { + /* Flush all remaining kafka messages (rd_kafka_poll is called inside) */ + const int flushStatus = rd_kafka_flush(pData->rk, pData->closeTimeout); + if (flushStatus == RD_KAFKA_RESP_ERR_NO_ERROR) { + DBGPRINTF("omkafka: onDestroyflushed remaining '%d' messages " + "to kafka topic '%s'\n", queuedCount, + (pData->pTopic == NULL ? "NULL" : rd_kafka_topic_name(pData->pTopic)) + ); + + /* Trigger callbacks a last time before shutdown */ + const int callbacksCalled = rd_kafka_poll(pData->rk, 0); /* call callbacks */ + DBGPRINTF("omkafka: onDestroy kafka outqueue length: %d, " + "callbacks called %d\n", rd_kafka_outq_len(pData->rk), + callbacksCalled); + } else /* TODO: Handle unsend messages here! */ { + /* timeout = RD_KAFKA_RESP_ERR__TIMED_OUT */ + LogError(0, RS_RET_KAFKA_ERROR, "omkafka: onDestroy " + "Failed to send remaining '%d' messages to " + "topic '%s' on shutdown with error: '%s'", + queuedCount, + (pData->pTopic == NULL ? "NULL" : rd_kafka_topic_name(pData->pTopic)), + rd_kafka_err2str(flushStatus)); +#if RD_KAFKA_VERSION >= 0x010001ff + rd_kafka_purge(pData->rk, RD_KAFKA_PURGE_F_QUEUE | RD_KAFKA_PURGE_F_INFLIGHT); + /* Trigger callbacks a last time before shutdown */ + const int callbacksCalled = rd_kafka_poll(pData->rk, 0); /* call callbacks */ + DBGPRINTF("omkafka: onDestroy kafka outqueue length: %d, " + "callbacks called %d\n", rd_kafka_outq_len(pData->rk), + callbacksCalled); +#endif + } + } else { + break; + } + } + if (queuedCount > 0) { + LogMsg(0, RS_RET_ERR, LOG_WARNING, + "omkafka: queue-drain for close timed-out took too long, " + "items left in outqueue: %d -- this may indicate data loss", + rd_kafka_outq_len(pData->rk)); + } + if (pData->dynaTopic) { + dynaTopicFreeCacheEntries(pData); + } else { + closeTopic(pData); + } + + /* Final destroy of kafka!*/ + rd_kafka_destroy(pData->rk); + +# if RD_KAFKA_VERSION < 0x00090001 + /* Wait for kafka being destroyed in old API */ + if (rd_kafka_wait_destroyed(10000) < 0) { + LogError(0, RS_RET_ERR, "omkafka: rd_kafka_destroy did not finish after grace timeout (10s)!"); + } else { + DBGPRINTF("omkafka: rd_kafka_destroy successfully finished\n"); + } +# endif + + pData->rk = NULL; +done: return; +} + +/* should be called with write(rkLock) */ +static void +closeKafka(instanceData *const __restrict__ pData) +{ + if(pData->bIsOpen) { + do_rd_kafka_destroy(pData); + pData->bIsOpen = 0; + } +} + +static void +errorCallback(rd_kafka_t __attribute__((unused)) *rk, + int __attribute__((unused)) err, + const char *reason, + void __attribute__((unused)) *opaque) +{ + /* Get InstanceData pointer */ + instanceData *const pData = (instanceData *) opaque; + + /* count kafka transport errors that cause action suspension */ + if (err == RD_KAFKA_RESP_ERR__MSG_TIMED_OUT) { + STATSCOUNTER_INC(ctrKafkaRespTimedOut, mutCtrKafkaRespTimedOut); + } else if (err == RD_KAFKA_RESP_ERR__TRANSPORT) { + STATSCOUNTER_INC(ctrKafkaRespTransport, mutCtrKafkaRespTransport); + } else if (err == RD_KAFKA_RESP_ERR__ALL_BROKERS_DOWN) { + STATSCOUNTER_INC(ctrKafkaRespBrokerDown, mutCtrKafkaRespBrokerDown); + } else if (err == RD_KAFKA_RESP_ERR__AUTHENTICATION) { + STATSCOUNTER_INC(ctrKafkaRespAuth, mutCtrKafkaRespAuth); + } else if (err == RD_KAFKA_RESP_ERR__SSL) { + STATSCOUNTER_INC(ctrKafkaRespSSL, mutCtrKafkaRespSSL); + } else { + STATSCOUNTER_INC(ctrKafkaRespOther, mutCtrKafkaRespOther); + } + + /* Handle common transport error codes*/ + if (err == RD_KAFKA_RESP_ERR__MSG_TIMED_OUT || + err == RD_KAFKA_RESP_ERR__TRANSPORT || + err == RD_KAFKA_RESP_ERR__ALL_BROKERS_DOWN || + err == RD_KAFKA_RESP_ERR__AUTHENTICATION || + err == RD_KAFKA_RESP_ERR__SSL) { + /* Broker transport error, we need to disable the action for now!*/ + pData->bIsSuspended = 1; + LogMsg(0, RS_RET_KAFKA_ERROR, LOG_WARNING, + "omkafka: action will suspended due to kafka error %d: %s", + err, rd_kafka_err2str(err)); + } else { + LogError(0, RS_RET_KAFKA_ERROR, "omkafka: kafka error message: %d,'%s','%s'", + err, rd_kafka_err2str(err), reason); + } +} + + + +#if 0 /* the stock librdkafka version in Ubuntu 14.04 LTS does NOT support metadata :-( */ +/* Note: this is a skeleton, with some code missing--> add it when it is actually implemented. */ +static int +getConfiguredPartitions() +{ + struct rd_kafka_metadata *pMetadata; + if(rd_kafka_metadata(pData->rk, 0, rkt, &pMetadata, 8) + == RD_KAFKA_RESP_ERR_NO_ERROR) { + dbgprintf("omkafka: topic '%s' has %d partitions\n", + pData->topic, pMetadata->topics[0]->partition_cnt); + rd_kafka_metadata_destroy(pMetadata); + } else { + dbgprintf("omkafka: error reading metadata\n"); + // TODO: handle this gracefull **when** we actually need + // the metadata -- or remove completely. 2014-12-12 rgerhards + } +} +#endif + +/* should be called with write(rkLock) */ +static rsRetVal +openKafka(instanceData *const __restrict__ pData) +{ + char errstr[MAX_ERRMSG]; + DEFiRet; + + if(pData->bIsOpen) + FINALIZE; + + pData->pTopic = NULL; + + /* main conf */ + rd_kafka_conf_t *const conf = rd_kafka_conf_new(); + if(conf == NULL) { + LogError(0, RS_RET_KAFKA_ERROR, "omkafka: error creating kafka conf obj: %s\n", + rd_kafka_err2str(rd_kafka_last_error())); + ABORT_FINALIZE(RS_RET_KAFKA_ERROR); + } + +#ifdef DEBUG + /* enable kafka debug output */ + if(rd_kafka_conf_set(conf, "debug", RD_KAFKA_DEBUG_CONTEXTS, + errstr, sizeof(errstr)) != RD_KAFKA_CONF_OK) { + LogError(0, RS_RET_KAFKA_ERROR, "omkafka: error setting kafka debug option: %s\n", errstr); + /* DO NOT ABORT IN THIS CASE! */ + } +#endif + + for(int i = 0 ; i < pData->nConfParams ; ++i) { + DBGPRINTF("omkafka: setting custom configuration parameter: %s:%s\n", + pData->confParams[i].name, + pData->confParams[i].val); + if(rd_kafka_conf_set(conf, pData->confParams[i].name, + pData->confParams[i].val, errstr, sizeof(errstr)) + != RD_KAFKA_CONF_OK) { + if(pData->bReportErrs) { + LogError(0, RS_RET_PARAM_ERROR, "error setting custom configuration " + "parameter '%s=%s': %s", + pData->confParams[i].name, + pData->confParams[i].val, errstr); + } else { + DBGPRINTF("omkafka: error setting custom configuration parameter '%s=%s': %s", + pData->confParams[i].name, + pData->confParams[i].val, errstr); + } + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + } + rd_kafka_conf_set_opaque(conf, (void *) pData); + rd_kafka_conf_set_dr_msg_cb(conf, deliveryCallback); + rd_kafka_conf_set_error_cb(conf, errorCallback); + rd_kafka_conf_set_stats_cb(conf, statsCallback); +# if RD_KAFKA_VERSION >= 0x00090001 + rd_kafka_conf_set_log_cb(conf, kafkaLogger); +# endif + + char kafkaErrMsg[1024]; + pData->rk = rd_kafka_new(RD_KAFKA_PRODUCER, conf, kafkaErrMsg, sizeof(kafkaErrMsg)); + if(pData->rk == NULL) { + LogError(0, RS_RET_KAFKA_ERROR, + "omkafka: error creating kafka handle: %s\n", kafkaErrMsg); + ABORT_FINALIZE(RS_RET_KAFKA_ERROR); + } + +# if RD_KAFKA_VERSION < 0x00090001 + rd_kafka_conf_set_log_cb(pData->rk, kafkaLogger); +# endif + DBGPRINTF("omkafka setting brokers: '%s'n", pData->brokers); + if(rd_kafka_brokers_add(pData->rk, (char*)pData->brokers) == 0) { + LogError(0, RS_RET_KAFKA_NO_VALID_BROKERS, + "omkafka: no valid brokers specified: %s\n", pData->brokers); + ABORT_FINALIZE(RS_RET_KAFKA_NO_VALID_BROKERS); + } + + pData->bIsOpen = 1; +finalize_it: + if(iRet == RS_RET_OK) { + pData->bReportErrs = 1; + } else { + pData->bReportErrs = 0; + if(pData->rk != NULL) { + do_rd_kafka_destroy(pData); + } + } + RETiRet; +} + +static rsRetVal +setupKafkaHandle(instanceData *const __restrict__ pData, int recreate) +{ + DEFiRet; + pthread_rwlock_wrlock(&pData->rkLock); + if (recreate) { + closeKafka(pData); + } + CHKiRet(openKafka(pData)); + if (! pData->dynaTopic) { + if( pData->pTopic == NULL) + CHKiRet(prepareTopic(pData, pData->topic)); + } +finalize_it: + if (iRet != RS_RET_OK) { + if (pData->rk != NULL) { + closeKafka(pData); + } + + /* Parameter Error's cannot be resumed, so we need to disable the action */ + if (iRet == RS_RET_PARAM_ERROR) { + iRet = RS_RET_DISABLE_ACTION; + LogError(0, iRet, "omkafka: action will be disabled due invalid " + "kafka configuration parameters\n"); + } + + } + pthread_rwlock_unlock(&pData->rkLock); + RETiRet; +} + +static rsRetVal +checkFailedMessages(instanceData *const __restrict__ pData) +{ + failedmsg_entry* fmsgEntry; + DEFiRet; + + /* Loop through failed messages, reprocess them first! */ + while (!SLIST_EMPTY(&pData->failedmsg_head)) { + fmsgEntry = SLIST_FIRST(&pData->failedmsg_head); + assert(fmsgEntry != NULL); + /* Put back into kafka! */ + iRet = writeKafka(pData, (uchar*) fmsgEntry->key, (uchar*) fmsgEntry->payload, NULL, + fmsgEntry->topicname,NO_RESUBMIT); + if(iRet != RS_RET_OK) { + LogMsg(0, RS_RET_SUSPENDED, LOG_WARNING, + "omkafka: failed to deliver failed msg '%.*s' with status %d. " + "- suspending AGAIN!", + (int)(strlen((char*)fmsgEntry->payload)-1), + (char*)fmsgEntry->payload, iRet); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } else { + DBGPRINTF("omkafka: successfully delivered failed msg '%.*s'.\n", + (int)(strlen((char*)fmsgEntry->payload)-1), + (char*)fmsgEntry->payload); + /* Note: we can use SLIST even though it is o(n), because the element + * in question is always either the root or the next element and + * SLIST_REMOVE iterates only until the element to be deleted is found. + * We cannot use SLIST_REMOVE_HEAD() as new elements may have been + * added in the delivery callback! + * TODO: sounds like bad logic -- why do we add and remove, just simply + * keep it in queue? + */ + SLIST_REMOVE(&pData->failedmsg_head, fmsgEntry, s_failedmsg_entry, entries); + failedmsg_entry_destruct(fmsgEntry); + } + } + +finalize_it: + RETiRet; +} + +/* This function persists failed messages into a data file, so they can + * be resend on next startup. + * alorbach, 2017-06-02 + */ +static rsRetVal ATTR_NONNULL(1) +persistFailedMsgs(instanceData *const __restrict__ pData) +{ + DEFiRet; + int fdMsgFile = -1; + ssize_t nwritten; + + if(SLIST_EMPTY(&pData->failedmsg_head)) { + DBGPRINTF("omkafka: persistFailedMsgs: We do not need to persist failed messages.\n"); + FINALIZE; + } + + fdMsgFile = open((char*)pData->failedMsgFile, + O_WRONLY|O_CREAT|O_APPEND|O_LARGEFILE|O_CLOEXEC, + S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP); + if(fdMsgFile == -1) { + LogError(errno, RS_RET_ERR, "omkafka: persistFailedMsgs error opening failed msg file %s", + pData->failedMsgFile); + ABORT_FINALIZE(RS_RET_ERR); + } + + while (!SLIST_EMPTY(&pData->failedmsg_head)) { + failedmsg_entry* fmsgEntry = SLIST_FIRST(&pData->failedmsg_head); + assert(fmsgEntry != NULL); + nwritten = write(fdMsgFile, fmsgEntry->topicname, ustrlen(fmsgEntry->topicname) ); + if(nwritten != -1) + nwritten = write(fdMsgFile, "\t", 1); + if((nwritten != -1) && (fmsgEntry->key)) + nwritten = write(fdMsgFile, fmsgEntry->key, ustrlen(fmsgEntry->key) ); + if(nwritten != -1) + nwritten = write(fdMsgFile, "\t", 1); + if(nwritten != -1) + nwritten = write(fdMsgFile, fmsgEntry->payload, ustrlen(fmsgEntry->payload) ); + if(nwritten == -1) { + LogError(errno, RS_RET_ERR, "omkafka: persistFailedMsgs error writing failed msg file"); + ABORT_FINALIZE(RS_RET_ERR); + } else { + DBGPRINTF("omkafka: persistFailedMsgs successfully written loaded msg '%.*s' for " + "topic '%s'\n", (int)(strlen((char*)fmsgEntry->payload)-1), + fmsgEntry->payload, fmsgEntry->topicname); + } + SLIST_REMOVE_HEAD(&pData->failedmsg_head, entries); + failedmsg_entry_destruct(fmsgEntry); + } + +finalize_it: + if(fdMsgFile != -1) { + close(fdMsgFile); + } + if(iRet != RS_RET_OK) { + LogError(0, iRet, "omkafka: could not persist failed messages " + "file %s - failed messages will be lost.", + (char*)pData->failedMsgFile); + } + RETiRet; +} + +/* This function loads failed messages from a data file, so they can + * be resend after action startup. + * alorbach, 2017-06-06 + */ +static rsRetVal +loadFailedMsgs(instanceData *const __restrict__ pData) +{ + DEFiRet; + struct stat stat_buf; + failedmsg_entry* fmsgEntry; + strm_t *pstrmFMSG = NULL; + cstr_t *pCStr = NULL; + uchar *puStr; + char *pStrTabPos; + char *pStrTabPos2; + + assert(pData->failedMsgFile != NULL); + + /* check if the file exists */ + if(stat((char*) pData->failedMsgFile, &stat_buf) == -1) { + if(errno == ENOENT) { + DBGPRINTF("omkafka: loadFailedMsgs failed messages file %s wasn't found, " + "continue startup\n", pData->failedMsgFile); + ABORT_FINALIZE(RS_RET_FILE_NOT_FOUND); + } else { + LogError(errno, RS_RET_IO_ERROR, + "omkafka: loadFailedMsgs could not open failed messages file %s", + pData->failedMsgFile); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + } else { + DBGPRINTF("omkafka: loadFailedMsgs found failed message file %s.\n", + pData->failedMsgFile); + } + + /* File exists, we can load and process it */ + CHKiRet(strm.Construct(&pstrmFMSG)); + CHKiRet(strm.SettOperationsMode(pstrmFMSG, STREAMMODE_READ)); + CHKiRet(strm.SetsType(pstrmFMSG, STREAMTYPE_FILE_SINGLE)); + CHKiRet(strm.SetFName(pstrmFMSG, pData->failedMsgFile, ustrlen(pData->failedMsgFile))); + CHKiRet(strm.ConstructFinalize(pstrmFMSG)); + + while(strm.ReadLine(pstrmFMSG, &pCStr, 0, 0, NULL, 0, NULL) == RS_RET_OK) { + if(rsCStrLen(pCStr) == 0) { + /* we do not process empty lines */ + DBGPRINTF("omkafka: loadFailedMsgs msg was empty!"); + } else { + puStr = rsCStrGetSzStrNoNULL(pCStr); //topic + pStrTabPos = index((char*)puStr, '\t'); //key + pStrTabPos2 = index((char*)pStrTabPos+1, '\t'); //msg + if ((pStrTabPos != NULL) && (pStrTabPos2 != NULL)) { + *pStrTabPos = '\0'; /* split string into two */ + *pStrTabPos2 = '\0'; /* split string into two */ + DBGPRINTF("omkafka: loadFailedMsgs successfully loaded msg '%s' for " + "topic '%s' key '%s' \n", + pStrTabPos2+1, (char*)puStr, pStrTabPos+1); + if (strlen(pStrTabPos+1)) { + CHKmalloc(fmsgEntry = failedmsg_entry_construct( + pStrTabPos+1,strlen(pStrTabPos+1), + pStrTabPos2+1,strlen(pStrTabPos2+1), + (char*)puStr)); + } else { + CHKmalloc(fmsgEntry = failedmsg_entry_construct( + NULL,0, + pStrTabPos2+1,strlen(pStrTabPos2+1), + (char*)puStr)); + } + SLIST_INSERT_HEAD(&pData->failedmsg_head, fmsgEntry, entries); + } else { + LogError(0, RS_RET_ERR, "omkafka: loadFailedMsgs droping invalid msg found: %s", + (char*)rsCStrGetSzStrNoNULL(pCStr)); + } + } + + rsCStrDestruct(&pCStr); /* discard string (must be done by us!) */ + } +finalize_it: + if(pstrmFMSG != NULL) { + strm.Destruct(&pstrmFMSG); + } + + if(iRet != RS_RET_OK) { + /* We ignore FILE NOT FOUND here */ + if (iRet != RS_RET_FILE_NOT_FOUND) { + LogError(0, iRet, "omkafka: could not load failed messages " + "from file %s error %d - failed messages will not be resend.", + (char*)pData->failedMsgFile, iRet); + } + } else { + DBGPRINTF("omkafka: loadFailedMsgs unlinking '%s'\n", (char*)pData->failedMsgFile); + /* Delete file if still exists! */ + const int r = unlink((char*)pData->failedMsgFile); + if(r != 0 && r != ENOENT) { + LogError(errno, RS_RET_ERR, "omkafka: loadFailedMsgs failed to remove " + "file \"%s\"", (char*)pData->failedMsgFile); + } + } + + RETiRet; +} + +BEGINdoHUP +CODESTARTdoHUP + pthread_mutex_lock(&pData->mutErrFile); + if(pData->fdErrFile != -1) { + close(pData->fdErrFile); + pData->fdErrFile = -1; + } + pthread_mutex_unlock(&pData->mutErrFile); + pthread_mutex_lock(&pData->mutStatsFile); + if(pData->fdStatsFile != -1) { + close(pData->fdStatsFile); + pData->fdStatsFile = -1; + } + pthread_mutex_unlock(&pData->mutStatsFile); + if (pData->bReopenOnHup) { + CHKiRet(setupKafkaHandle(pData, 1)); + } else { + /* Optional */ + const int callbacksCalled = rd_kafka_poll(pData->rk, 0); /* call callbacks */ + LogMsg(0, NO_ERRCODE, LOG_INFO, "omkafka: doHUP kafka - '%s' outqueue length: %d," + "callbacks called %d\n", pData->tplName, + rd_kafka_outq_len(pData->rk), callbacksCalled); + } +finalize_it: +ENDdoHUP + +BEGINcreateInstance +CODESTARTcreateInstance + pData->currPartition = 0; + pData->bIsOpen = 0; + pData->bIsSuspended = 0; + pData->fdErrFile = -1; + pData->fdStatsFile = -1; + pData->pTopic = NULL; + pData->bReportErrs = 1; + pData->bReopenOnHup = 1; + pData->bResubmitOnFailure = 0; + pData->bKeepFailedMessages = 0; + pData->failedMsgFile = NULL; + SLIST_INIT(&pData->failedmsg_head); + CHKiRet(pthread_mutex_init(&pData->mut_doAction, NULL)); + CHKiRet(pthread_mutex_init(&pData->mutErrFile, NULL)); + CHKiRet(pthread_mutex_init(&pData->mutStatsFile, NULL)); + CHKiRet(pthread_rwlock_init(&pData->rkLock, NULL)); + CHKiRet(pthread_mutex_init(&pData->mutDynCache, NULL)); + INIT_ATOMIC_HELPER_MUT(pData->mutCurrPartition); +finalize_it: +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + /* Helpers for Failed Msg List */ + failedmsg_entry* fmsgEntry1; + failedmsg_entry* fmsgEntry2; + if(pData->fdErrFile != -1) + close(pData->fdErrFile); + if(pData->fdStatsFile != -1) + close(pData->fdStatsFile); + /* Closing Kafka first! */ + pthread_rwlock_wrlock(&pData->rkLock); + closeKafka(pData); + if(pData->dynaTopic && pData->dynCache != NULL) { + free(pData->dynCache); + pData->dynCache = NULL; + } + /* Persist failed messages */ + if (pData->bResubmitOnFailure && pData->bKeepFailedMessages && pData->failedMsgFile != NULL) { + persistFailedMsgs(pData); + } + pthread_rwlock_unlock(&pData->rkLock); + + if (pData->stats) { + statsobj.Destruct(&pData->stats); + } + + /* Delete Linked List for failed msgs */ + fmsgEntry1 = SLIST_FIRST(&pData->failedmsg_head); + while (fmsgEntry1 != NULL) { + fmsgEntry2 = SLIST_NEXT(fmsgEntry1, entries); + failedmsg_entry_destruct(fmsgEntry1); + fmsgEntry1 = fmsgEntry2; + } + SLIST_INIT(&pData->failedmsg_head); + /* Free other mem */ + free(pData->errorFile); + free(pData->statsFile); + free(pData->failedMsgFile); + free(pData->topic); + free(pData->brokers); + free(pData->tplName); + free(pData->statsName); + for(int i = 0 ; i < pData->nConfParams ; ++i) { + free((void*) pData->confParams[i].name); + free((void*) pData->confParams[i].val); + } + free(pData->confParams); + for(int i = 0 ; i < pData->nTopicConfParams ; ++i) { + free((void*) pData->topicConfParams[i].name); + free((void*) pData->topicConfParams[i].val); + } + free(pData->topicConfParams); + DESTROY_ATOMIC_HELPER_MUT(pData->mutCurrPartition); + pthread_rwlock_destroy(&pData->rkLock); + pthread_mutex_destroy(&pData->mut_doAction); + pthread_mutex_destroy(&pData->mutErrFile); + pthread_mutex_destroy(&pData->mutStatsFile); + pthread_mutex_destroy(&pData->mutDynCache); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume + int iKafkaRet; + const struct rd_kafka_metadata *metadata; +CODESTARTtryResume + pthread_mutex_lock(&pWrkrData->pData->mut_doAction); /* see doAction header comment! */ + CHKiRet(setupKafkaHandle(pWrkrData->pData, 0)); + + if ((iKafkaRet = rd_kafka_metadata(pWrkrData->pData->rk, 0, NULL, &metadata, 1000)) + != RD_KAFKA_RESP_ERR_NO_ERROR) { + DBGPRINTF("omkafka: tryResume failed, brokers down %d,%s\n", iKafkaRet, rd_kafka_err2str(iKafkaRet)); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } else { + DBGPRINTF("omkafka: tryResume success, %d brokers UP\n", metadata->broker_cnt); + /* Reset suspended state */ + pWrkrData->pData->bIsSuspended = 0; + /* free mem*/ + rd_kafka_metadata_destroy(metadata); + } + +finalize_it: + pthread_mutex_unlock(&pWrkrData->pData->mut_doAction); /* see doAction header comment! */ + DBGPRINTF("omkafka: tryResume returned %d\n", iRet); +ENDtryResume + + +/* IMPORTANT NOTE on multithreading: + * librdkafka creates background threads itself. So omkafka basically needs to move + * memory buffers over to librdkafka, which then does the heavy hauling. As such, we + * think that it is best to run max one wrkr instance of omkafka -- otherwise we just + * get additional locking (contention) overhead without any real gain. As such, + * we use a global mutex for doAction which ensures only one worker can be active + * at any given time. That mutex is also used to guard utility functions (like + * tryResume) which may also be accessed by multiple workers in parallel. + * Note: shall this method be changed, the kafka connection/suspension handling needs + * to be refactored. The current code assumes that all workers share state information + * including librdkafka handles. + */ +BEGINdoAction +CODESTARTdoAction + failedmsg_entry* fmsgEntry; + instanceData *const pData = pWrkrData->pData; + int need_unlock = 0; + int dynaTopicID = 0; + int dynaKeyID = 0; + + if (pData->dynaKey) { + dynaKeyID=2; + if (pData->dynaTopic) { + dynaTopicID=3; + } + } else { + if (pData->dynaTopic) { + dynaTopicID=2; + } + } + pthread_mutex_lock(&pData->mut_doAction); + if (! pData->bIsOpen) + CHKiRet(setupKafkaHandle(pData, 0)); + + /* Lock here to prevent msg loss */ + pthread_rwlock_rdlock(&pData->rkLock); + need_unlock = 1; + + /* We need to trigger callbacks first in order to suspend the Action properly on failure */ + const int callbacksCalled = rd_kafka_poll(pData->rk, 0); /* call callbacks */ + DBGPRINTF("omkafka: doAction kafka outqueue length: %d, callbacks called %d\n", + rd_kafka_outq_len(pData->rk), callbacksCalled); + + /* Reprocess failed messages! */ + if (pData->bResubmitOnFailure) { + iRet = checkFailedMessages(pData); + if(iRet != RS_RET_OK) { + DBGPRINTF("omkafka: doAction failed to submit FAILED messages with status %d\n", iRet); + + if (pData->bResubmitOnFailure) { + if (pData->dynaKey || pData->key) { + DBGPRINTF("omkafka: also adding MSG '%.*s' for topic '%s' key '%s' " + "to failed for RETRY!\n", + (int)(strlen((char*)ppString[0])-1), ppString[0], + pData->dynaTopic ? ppString[dynaTopicID] : pData->topic, + pData->dynaKey ? ppString[dynaKeyID] : pData->key); + } else { + DBGPRINTF("omkafka: also adding MSG '%.*s' for topic '%s' " + "to failed for RETRY!\n", + (int)(strlen((char*)ppString[0])-1), ppString[0], + pData->dynaTopic ? ppString[dynaTopicID] : pData->topic); + } + CHKmalloc(fmsgEntry = failedmsg_entry_construct( + (char*) (pData->dynaKey ? ppString[dynaKeyID] : pData->key), + pData->dynaKey || pData->key ? + strlen((char*)(pData->dynaKey ? ppString[dynaKeyID] : pData->key)) : 0, + (char*)ppString[0], strlen((char*)ppString[0]), + (char*) (pData->dynaTopic ? ppString[dynaTopicID] : pData->topic))); + SLIST_INSERT_HEAD(&pData->failedmsg_head, fmsgEntry, entries); + } + ABORT_FINALIZE(iRet); + } + } + + /* support dynamic topic */ + iRet = writeKafka(pData, pData->dynaKey ? ppString[dynaKeyID] : pData->key, ppString[0], ppString[1], + pData->dynaTopic ? ppString[dynaTopicID] : pData->topic, RESUBMIT); + +finalize_it: + if(need_unlock) { + pthread_rwlock_unlock(&pData->rkLock); + } + + if(iRet != RS_RET_OK) { + DBGPRINTF("omkafka: doAction failed with status %d\n", iRet); + } + + /* Suspend Action if broker problems were reported in error callback */ + if (pData->bIsSuspended) { + DBGPRINTF("omkafka: doAction broker failure detected, suspending action\n"); + iRet = RS_RET_SUSPENDED; + } + pthread_mutex_unlock(&pData->mut_doAction); /* must be after last pData access! */ +ENDdoAction + + +static void +setInstParamDefaults(instanceData *pData) +{ + pData->topic = NULL; + pData->pTopic = NULL; + pData->dynaKey = 0; + pData->dynaTopic = 0; + pData->iDynaTopicCacheSize = 50; + pData->brokers = NULL; + pData->autoPartition = 0; + pData->fixedPartition = NO_FIXED_PARTITION; + pData->nPartitions = 1; + pData->nConfParams = 0; + pData->confParams = NULL; + pData->nTopicConfParams = 0; + pData->topicConfParams = NULL; + pData->errorFile = NULL; + pData->statsFile = NULL; + pData->failedMsgFile = NULL; + pData->key = NULL; + pData->closeTimeout = 2000; +} + +static rsRetVal +processKafkaParam(char *const param, + const char **const name, + const char **const paramval) +{ + DEFiRet; + char *val = strstr(param, "="); + if(val == NULL) { + LogError(0, RS_RET_PARAM_ERROR, "missing equal sign in " + "parameter '%s'", param); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + *val = '\0'; /* terminates name */ + ++val; /* now points to begin of value */ + CHKmalloc(*name = strdup(param)); + CHKmalloc(*paramval = strdup(val)); +finalize_it: + RETiRet; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; + int iNumTpls; +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "topic")) { + pData->topic = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "dynakey")) { + pData->dynaKey = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "dynatopic")) { + pData->dynaTopic = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "dynatopic.cachesize")) { + pData->iDynaTopicCacheSize = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "closetimeout")) { + pData->closeTimeout = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "partitions.auto")) { + pData->autoPartition = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "partitions.number")) { + pData->nPartitions = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "partitions.usefixed")) { + pData->fixedPartition = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "broker")) { + es_str_t *es = es_newStr(128); + int bNeedComma = 0; + for(int j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + if(bNeedComma) + es_addChar(&es, ','); + es_addStr(&es, pvals[i].val.d.ar->arr[j]); + bNeedComma = 1; + } + pData->brokers = es_str2cstr(es, NULL); + es_deleteStr(es); + } else if(!strcmp(actpblk.descr[i].name, "confparam")) { + pData->nConfParams = pvals[i].val.d.ar->nmemb; + CHKmalloc(pData->confParams = malloc(sizeof(struct kafka_params) * + pvals[i].val.d.ar->nmemb )); + for(int j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + char *cstr = es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + CHKiRet(processKafkaParam(cstr, &pData->confParams[j].name, + &pData->confParams[j].val)); + free(cstr); + } + } else if(!strcmp(actpblk.descr[i].name, "topicconfparam")) { + pData->nTopicConfParams = pvals[i].val.d.ar->nmemb; + CHKmalloc(pData->topicConfParams = malloc(sizeof(struct kafka_params) * + pvals[i].val.d.ar->nmemb )); + for(int j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + char *cstr = es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + CHKiRet(processKafkaParam(cstr, &pData->topicConfParams[j].name, + &pData->topicConfParams[j].val)); + free(cstr); + } + } else if(!strcmp(actpblk.descr[i].name, "errorfile")) { + pData->errorFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "statsfile")) { + pData->statsFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "key")) { + pData->key = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "reopenonhup")) { + pData->bReopenOnHup = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "resubmitonfailure")) { + pData->bResubmitOnFailure = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "keepfailedmessages")) { + pData->bKeepFailedMessages = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "failedmsgfile")) { + pData->failedMsgFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "statsname")) { + pData->statsName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + LogError(0, RS_RET_INTERNAL_ERROR, + "omkafka: program error, non-handled param '%s'\n", actpblk.descr[i].name); + } + } + + if(pData->brokers == NULL) { + CHKmalloc(pData->brokers = strdup("localhost:9092")); + LogMsg(0, NO_ERRCODE, LOG_INFO, "imkafka: \"broker\" parameter not specified " + "using default of localhost:9092 -- this may not be what you want!"); + } + + if(pData->dynaKey && pData->key == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, + "omkafka: requested dynamic key, but no " + "name for key template given - action definition invalid"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + + if(pData->dynaTopic && pData->topic == NULL) { + LogError(0, RS_RET_CONFIG_ERROR, + "omkafka: requested dynamic topic, but no " + "name for topic template given - action definition invalid"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + + iNumTpls = 2; + if(pData->dynaKey) ++iNumTpls; + if(pData->dynaTopic) ++iNumTpls; + CODE_STD_STRING_REQUESTnewActInst(iNumTpls); + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*)strdup((pData->tplName == NULL) ? + "RSYSLOG_FileFormat" : (char*)pData->tplName), + OMSR_NO_RQD_TPL_OPTS)); + + CHKiRet(OMSRsetEntry(*ppOMSR, 1, (uchar*)strdup(" KAFKA_TimeStamp"), + OMSR_NO_RQD_TPL_OPTS)); + if(pData->dynaKey) + CHKiRet(OMSRsetEntry(*ppOMSR, 2, ustrdup(pData->key), OMSR_NO_RQD_TPL_OPTS)); + + if(pData->dynaTopic) { + CHKiRet(OMSRsetEntry(*ppOMSR, pData->dynaKey?3:2, ustrdup(pData->topic), OMSR_NO_RQD_TPL_OPTS)); + CHKmalloc(pData->dynCache = (dynaTopicCacheEntry**) + calloc(pData->iDynaTopicCacheSize, sizeof(dynaTopicCacheEntry*))); + pData->iCurrElt = -1; + } + + pthread_mutex_lock(&closeTimeoutMut); + if (closeTimeout < pData->closeTimeout) { + closeTimeout = pData->closeTimeout; + } + pthread_mutex_unlock(&closeTimeoutMut); + + /* Load failed messages here (If enabled), do NOT check for IRET!*/ + if (pData->bKeepFailedMessages && pData->failedMsgFile != NULL) { + loadFailedMsgs(pData); + } + + if (pData->statsName) { + CHKiRet(statsobj.Construct(&pData->stats)); + CHKiRet(statsobj.SetName(pData->stats, (uchar *)pData->statsName)); + CHKiRet(statsobj.SetOrigin(pData->stats, (uchar *)"omkafka")); + + /* Track following stats */ + STATSCOUNTER_INIT(pData->ctrTopicSubmit, pData->mutCtrTopicSubmit); + CHKiRet(statsobj.AddCounter(pData->stats, (uchar *)"submitted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &pData->ctrTopicSubmit)); + STATSCOUNTER_INIT(pData->ctrKafkaFail, pData->mutCtrKafkaFail); + CHKiRet(statsobj.AddCounter(pData->stats, (uchar *)"failures", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &pData->ctrKafkaFail)); + STATSCOUNTER_INIT(pData->ctrKafkaAck, pData->mutCtrKafkaAck); + CHKiRet(statsobj.AddCounter(pData->stats, (uchar *)"acked", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &pData->ctrKafkaAck)); + CHKiRet(statsobj.ConstructFinalize(pData->stats)); + } + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINmodExit +CODESTARTmodExit + statsobj.Destruct(&kafkaStats); + CHKiRet(objRelease(statsobj, CORE_COMPONENT)); + DESTROY_ATOMIC_HELPER_MUT(mutClock); + + pthread_mutex_lock(&closeTimeoutMut); + int timeout = closeTimeout; + pthread_mutex_unlock(&closeTimeoutMut); + pthread_mutex_destroy(&closeTimeoutMut); + if (rd_kafka_wait_destroyed(timeout) != 0) { + LogMsg(0, RS_RET_OK, LOG_WARNING, + "omkafka: could not terminate librdkafka gracefully, " + "%d threads still remain.\n", rd_kafka_thread_cnt()); + } +finalize_it: +ENDmodExit + + +NO_LEGACY_CONF_parseSelectorAct +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_CNFNAME_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_doHUP +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + uchar *pTmp; +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + dbgprintf("just because librdkafka needs it, sqrt of 4 is %f\n", sqrt(4.0)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(strm, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + + INIT_ATOMIC_HELPER_MUT(mutClock); + + DBGPRINTF("omkafka %s using librdkafka version %s, 0x%x\n", + VERSION, rd_kafka_version_str(), rd_kafka_version()); + CHKiRet(statsobj.Construct(&kafkaStats)); + CHKiRet(statsobj.SetName(kafkaStats, (uchar *)"omkafka")); + CHKiRet(statsobj.SetOrigin(kafkaStats, (uchar*)"omkafka")); + STATSCOUNTER_INIT(ctrTopicSubmit, mutCtrTopicSubmit); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"submitted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrTopicSubmit)); + STATSCOUNTER_INIT(ctrQueueSize, mutCtrQueueSize); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"maxoutqsize", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrQueueSize)); + STATSCOUNTER_INIT(ctrKafkaFail, mutCtrKafkaFail); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"failures", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaFail)); + STATSCOUNTER_INIT(ctrCacheSkip, mutCtrCacheSkip); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"topicdynacache.skipped", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrCacheSkip)); + STATSCOUNTER_INIT(ctrCacheMiss, mutCtrCacheMiss); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"topicdynacache.miss", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrCacheMiss)); + STATSCOUNTER_INIT(ctrCacheEvict, mutCtrCacheEvict); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"topicdynacache.evicted", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrCacheEvict)); + STATSCOUNTER_INIT(ctrKafkaAck, mutCtrKafkaAck); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"acked", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaAck)); + STATSCOUNTER_INIT(ctrKafkaMsgTooLarge, mutCtrKafkaMsgTooLarge); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"failures_msg_too_large", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaMsgTooLarge)); + STATSCOUNTER_INIT(ctrKafkaUnknownTopic, mutCtrKafkaUnknownTopic); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"failures_unknown_topic", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaUnknownTopic)); + STATSCOUNTER_INIT(ctrKafkaQueueFull, mutCtrKafkaQueueFull); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"failures_queue_full", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaQueueFull)); + STATSCOUNTER_INIT(ctrKafkaUnknownPartition, mutCtrKafkaUnknownPartition); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"failures_unknown_partition", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaUnknownPartition)); + STATSCOUNTER_INIT(ctrKafkaOtherErrors, mutCtrKafkaOtherErrors); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"failures_other", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaOtherErrors)); + STATSCOUNTER_INIT(ctrKafkaRespTimedOut, mutCtrKafkaRespTimedOut); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"errors_timed_out", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaRespTimedOut)); + STATSCOUNTER_INIT(ctrKafkaRespTransport, mutCtrKafkaRespTransport); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"errors_transport", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaRespTransport)); + STATSCOUNTER_INIT(ctrKafkaRespBrokerDown, mutCtrKafkaRespBrokerDown); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"errors_broker_down", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaRespBrokerDown)); + STATSCOUNTER_INIT(ctrKafkaRespAuth, mutCtrKafkaRespAuth); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"errors_auth", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaRespAuth)); + STATSCOUNTER_INIT(ctrKafkaRespSSL, mutCtrKafkaRespSSL); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"errors_ssl", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaRespSSL)); + STATSCOUNTER_INIT(ctrKafkaRespOther, mutCtrKafkaRespOther); + CHKiRet(statsobj.AddCounter(kafkaStats, (uchar *)"errors_other", + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &ctrKafkaRespOther)); + CHKiRet(statsobj.AddCounter(kafkaStats, UCHAR_CONSTANT("rtt_avg_usec"), + ctrType_Int, CTR_FLAG_NONE, &rtt_avg_usec)); + CHKiRet(statsobj.AddCounter(kafkaStats, UCHAR_CONSTANT("throttle_avg_msec"), + ctrType_Int, CTR_FLAG_NONE, &throttle_avg_msec)); + CHKiRet(statsobj.AddCounter(kafkaStats, UCHAR_CONSTANT("int_latency_avg_usec"), + ctrType_Int, CTR_FLAG_NONE, &int_latency_avg_usec)); + CHKiRet(statsobj.ConstructFinalize(kafkaStats)); + + DBGPRINTF("omkafka: Add KAFKA_TimeStamp to template system ONCE\n"); + pTmp = (uchar*) KAFKA_TimeStamp; + tplAddLine(ourConf, " KAFKA_TimeStamp", &pTmp); +ENDmodInit diff --git a/plugins/omlibdbi/Makefile.am b/plugins/omlibdbi/Makefile.am new file mode 100644 index 0000000..144dd66 --- /dev/null +++ b/plugins/omlibdbi/Makefile.am @@ -0,0 +1,12 @@ +pkglib_LTLIBRARIES = omlibdbi.la + +if LIBDBI_USE_DUMMY +omlibdbi_la_SOURCES = dummy.c +omlibdbi_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) -D MODNAME=omlibdbi +omlibdbi_la_LDFLAGS = -module -avoid-version +else +omlibdbi_la_SOURCES = omlibdbi.c +omlibdbi_la_CPPFLAGS = -I$(top_srcdir) $(LIBDBI_CFLAGS) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +omlibdbi_la_LDFLAGS = -module -avoid-version +omlibdbi_la_LIBADD = $(LIBDBI_LIBS) +endif diff --git a/plugins/omlibdbi/Makefile.in b/plugins/omlibdbi/Makefile.in new file mode 100644 index 0000000..365e087 --- /dev/null +++ b/plugins/omlibdbi/Makefile.in @@ -0,0 +1,815 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omlibdbi/dummy.c b/plugins/omlibdbi/dummy.c new file mode 100644 index 0000000..fe8c249 --- /dev/null +++ b/plugins/omlibdbi/dummy.c @@ -0,0 +1,171 @@ +/* a dummy module to be loaded if we cannot build this module, but + * configure required it to be "optional". + * + * Copyright 2020 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include <pthread.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" + +#define MODULE_NAME(x) #x + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME(MODULE_NAME(MODNAME)) + + +DEF_OMOD_STATIC_DATA + +/* config variables */ +typedef struct _instanceData { + char *dummy; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +struct modConfData_s { +}; + +/* modConf ptr to use for the current load process */ +static modConfData_t *loadModConf = NULL; +/* modConf ptr to use for the current exec process */ +static modConfData_t *runModConf = NULL; + + + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINsetModCnf +CODESTARTsetModCnf + (void) lst; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME)); +ENDsetModCnf + + +BEGINnewActInst +CODESTARTnewActInst + (void) pData; + (void) ppModData; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME)); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +BEGINdoAction_NoStrings +CODESTARTdoAction + (void) pMsgData; +ENDdoAction + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + /* we only support the current interface specification */ + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + dbgprintf("dummy module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git a/plugins/omlibdbi/omlibdbi.c b/plugins/omlibdbi/omlibdbi.c new file mode 100644 index 0000000..5fd5df2 --- /dev/null +++ b/plugins/omlibdbi/omlibdbi.c @@ -0,0 +1,660 @@ +/* omlibdbi.c + * This is the implementation of the dbi output module. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * This depends on libdbi being present with the proper settings. Older + * versions do not necessarily have them. Please visit this bug tracker + * for details: http://bugzilla.adiscon.com/show_bug.cgi?id=31 + * + * File begun on 2008-02-14 by RGerhards (extracted from syslogd.c) + * + * Copyright 2008-2016 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <time.h> +#include <libgen.h> +#include <dbi/dbi.h> +#include "dirty.h" +#include "syslogd-types.h" +#include "cfsysline.h" +#include "conf.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "debug.h" +#include "errmsg.h" +#include "conf.h" + +#undef HAVE_DBI_TXSUPP +/* transaction support disabled in v8 -- TODO: reenable */ + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omlibdbi") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA +static int bDbiInitialized = 0; /* dbi_initialize() can only be called one - this keeps track of it */ + +typedef struct _instanceData { + uchar *dbiDrvrDir; /* where do the dbi drivers reside? */ + dbi_conn conn; /* handle to database */ + uchar *drvrName; /* driver to use */ + uchar *host; /* host to connect to */ + uchar *usrName; /* user name for connect */ + uchar *pwd; /* password for connect */ + uchar *dbName; /* database to use */ + unsigned uLastDBErrno; /* last errno returned by libdbi or 0 if all is well */ + uchar *tplName; /* format template to use */ + int txSupport; /* transaction support */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +typedef struct configSettings_s { + uchar *dbiDrvrDir; /* global: where do the dbi drivers reside? */ + uchar *drvrName; /* driver to use */ + uchar *host; /* host to connect to */ + uchar *usrName; /* user name for connect */ + uchar *pwd; /* password for connect */ + uchar *dbName; /* database to use */ +} configSettings_t; +static configSettings_t cs; +static uchar *pszFileDfltTplName; /* name of the default template to use */ + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + uchar *dbiDrvrDir; /* where do the dbi drivers reside? */ + uchar *tplName; /* default template */ +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ + +static pthread_mutex_t mutDoAct = PTHREAD_MUTEX_INITIALIZER; + + +/* tables for interfacing with the v6 config system */ +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "template", eCmdHdlrGetWord, 0 }, + { "driverdirectory", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "server", eCmdHdlrGetWord, 1 }, + { "db", eCmdHdlrGetWord, 1 }, + { "uid", eCmdHdlrGetWord, 1 }, + { "pwd", eCmdHdlrGetWord, 1 }, + { "driver", eCmdHdlrGetWord, 1 }, + { "template", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +/* this function gets the default template. It coordinates action between + * old-style and new-style configuration parts. + */ +static uchar* +getDfltTpl(void) +{ + if(loadModConf != NULL && loadModConf->tplName != NULL) + return loadModConf->tplName; + else if(pszFileDfltTplName == NULL) + return (uchar*)" StdDBFmt"; + else + return pszFileDfltTplName; +} + + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + cs.dbiDrvrDir = NULL; + cs.drvrName = NULL; + cs.host = NULL; + cs.usrName = NULL; + cs.pwd = NULL; + cs.dbName = NULL; +ENDinitConfVars + + +/* config settings */ +#ifdef HAVE_DBI_R +static dbi_inst dbiInst; +#endif + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + /* we do not like repeated message reduction inside the database */ +ENDisCompatibleWithFeature + + +/* The following function is responsible for closing a + * database connection. + */ +static void closeConn(instanceData *pData) +{ + assert(pData != NULL); + if(pData->conn != NULL) { /* just to be on the safe side... */ + dbi_conn_close(pData->conn); + pData->conn = NULL; + } +} + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->drvrName); + free(pData->host); + free(pData->usrName); + free(pData->pwd); + free(pData->dbName); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + closeConn(pWrkrData->pData); +ENDfreeWrkrInstance + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + /* nothing special here */ +ENDdbgPrintInstInfo + + +/* log a database error with descriptive message. + * We check if we have a valid database handle. If not, we simply + * report an error, but can not be specific. RGerhards, 2007-01-30 + */ +static void +reportDBError(instanceData *pData, int bSilent) +{ + unsigned uDBErrno; + char errMsg[1024]; + const char *pszDbiErr; + + assert(pData != NULL); + + /* output log message */ + errno = 0; + if(pData->conn == NULL) { + LogError(0, NO_ERRCODE, "unknown DB error occurred - could not obtain connection handle"); + } else { /* we can ask dbi for the error description... */ + uDBErrno = dbi_conn_error(pData->conn, &pszDbiErr); + snprintf(errMsg, sizeof(errMsg), "db error (%d): %s\n", uDBErrno, pszDbiErr); + if(bSilent || uDBErrno == pData->uLastDBErrno) + dbgprintf("libdbi, DBError(silent): %s\n", errMsg); + else { + pData->uLastDBErrno = uDBErrno; + LogError(0, NO_ERRCODE, "%s", errMsg); + } + } + +} + + +/* The following function is responsible for initializing a connection + */ +static rsRetVal initConn(instanceData *pData, int bSilent) +{ + DEFiRet; + int iDrvrsLoaded; + + assert(pData != NULL); + assert(pData->conn == NULL); + + if(bDbiInitialized == 0) { + /* we need to init libdbi first */ +# ifdef HAVE_DBI_R + iDrvrsLoaded = dbi_initialize_r((char*) pData->dbiDrvrDir, &dbiInst); +# else + iDrvrsLoaded = dbi_initialize((char*) pData->dbiDrvrDir); +# endif + if(iDrvrsLoaded == 0) { + LogError(0, RS_RET_SUSPENDED, "libdbi error: libdbi or libdbi drivers not " + "present on this system - suspending."); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } else if(iDrvrsLoaded < 0) { + LogError(0, RS_RET_SUSPENDED, "libdbi error: libdbi could not be " + "initialized (do you have any dbi drivers installed?) - suspending."); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + bDbiInitialized = 1; /* we are done for the rest of our existence... */ + } + +# ifdef HAVE_DBI_R + pData->conn = dbi_conn_new_r((char*)pData->drvrName, dbiInst); +# else + pData->conn = dbi_conn_new((char*)pData->drvrName); +# endif + if(pData->conn == NULL) { + LogError(0, RS_RET_SUSPENDED, "can not initialize libdbi connection"); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } else { /* we could get the handle, now on with work... */ + /* Connect to database */ + dbi_conn_set_option(pData->conn, "host", (char*) pData->host); + dbi_conn_set_option(pData->conn, "username", (char*) pData->usrName); + + /* libdbi-driver-sqlite(2/3) requires to provide sqlite3_db dir which is absolute + path, where database file lives, + * and dbname, which is database file name itself. So in order to keep the config API unchanged, + * we split the dbname to path and filename. + */ + int is_sqlite2 = !strcmp((const char *)pData->drvrName, "sqlite"); + int is_sqlite3 = !strcmp((const char *)pData->drvrName, "sqlite3"); + if(is_sqlite2 || is_sqlite3) { + char *const dn_org = strdup((char*)pData->dbName); + char *const dn = dirname(dn_org); + dbi_conn_set_option(pData->conn, is_sqlite3 ? "sqlite3_dbdir" : "sqlite_dbdir",dn); + free(dn_org); /* Free original buffer - dirname may return different pointer */ + + char *tmp = strdup((char*)pData->dbName); + char *bn = basename(tmp); + dbi_conn_set_option(pData->conn, "dbname", bn); + free(tmp); + } else { + dbi_conn_set_option(pData->conn, "dbname", (char*) pData->dbName); + } + if(pData->pwd != NULL) + dbi_conn_set_option(pData->conn, "password", (char*) pData->pwd); + if(dbi_conn_connect(pData->conn) < 0) { + reportDBError(pData, bSilent); + closeConn(pData); /* ignore any error we may get */ + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + pData->txSupport = dbi_conn_cap_get(pData->conn, "transaction_support"); + } + +finalize_it: + RETiRet; +} + + +/* The following function writes the current log entry + * to an established database connection. + */ +static rsRetVal +writeDB(const uchar *psz, instanceData *const __restrict__ pData) +{ + DEFiRet; + dbi_result dbiRes = NULL; + + assert(psz != NULL); + assert(pData != NULL); + + /* see if we are ready to proceed */ + if(pData->conn == NULL) { + CHKiRet(initConn(pData, 0)); + } + + /* try insert */ + if((dbiRes = dbi_conn_query(pData->conn, (const char*)psz)) == NULL) { + /* error occurred, try to re-init connection and retry */ + closeConn(pData); /* close the current handle */ + CHKiRet(initConn(pData, 0)); /* try to re-open */ + if((dbiRes = dbi_conn_query(pData->conn, (const char*)psz)) == NULL) { /* re-try insert */ + /* we failed, giving up for now */ + reportDBError(pData, 0); + closeConn(pData); /* free ressources */ + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + } + +finalize_it: + if(iRet == RS_RET_OK) { + pData->uLastDBErrno = 0; /* reset error for error supression */ + } + + if(dbiRes != NULL) + dbi_result_free(dbiRes); + + RETiRet; +} + + +BEGINtryResume +CODESTARTtryResume + if(pWrkrData->pData->conn == NULL) { + iRet = initConn(pWrkrData->pData, 1); + } +ENDtryResume + +/* transaction support 2013-03 */ +BEGINbeginTransaction +CODESTARTbeginTransaction + if(pWrkrData->pData->conn == NULL) { + CHKiRet(initConn(pWrkrData->pData, 0)); + } +# ifdef HAVE_DBI_TXSUPP + if (pData->txSupport == 1) { + if (dbi_conn_transaction_begin(pData->conn) != 0) { + const char *emsg; + dbi_conn_error(pData->conn, &emsg); + dbgprintf("libdbi server error: begin transaction " + "not successful: %s\n", emsg); + closeConn(pData); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + } +# endif +finalize_it: +ENDbeginTransaction +/* end transaction */ + +BEGINdoAction +CODESTARTdoAction + pthread_mutex_lock(&mutDoAct); + CHKiRet(writeDB(ppString[0], pWrkrData->pData)); +# ifdef HAVE_DBI_TXSUPP + if (pData->txSupport == 1) { + iRet = RS_RET_DEFER_COMMIT; + } +# endif +finalize_it: + pthread_mutex_unlock(&mutDoAct); +ENDdoAction + +/* transaction support 2013-03 */ +BEGINendTransaction +CODESTARTendTransaction +# ifdef HAVE_DBI_TXSUPP + if (dbi_conn_transaction_commit(pData->conn) != 0) { + const char *emsg; + dbi_conn_error(pData->conn, &emsg); + dbgprintf("libdbi server error: transaction not committed: %s\n", + emsg); + closeConn(pData); + iRet = RS_RET_SUSPENDED; + } +# endif +ENDendTransaction +/* end transaction */ + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->tplName = NULL; + bLegacyCnfModGlobalsPermitted = 1; +ENDbeginCnfLoad + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "omlibdbi: error processing " + "module config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for omlibdbi:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "template")) { + loadModConf->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + if(pszFileDfltTplName != NULL) { + LogError(0, RS_RET_DUP_PARAM, "omlibdbi: warning: default template " + "was already set via legacy directive - may lead to inconsistent " + "results."); + } + } else if(!strcmp(modpblk.descr[i].name, "driverdirectory")) { + loadModConf->dbiDrvrDir = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("omlibdbi: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + bLegacyCnfModGlobalsPermitted = 0; +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +BEGINendCnfLoad +CODESTARTendCnfLoad + loadModConf = NULL; /* done loading */ + /* free legacy config vars */ + free(cs.dbiDrvrDir); + free(cs.drvrName); + free(cs.host); + free(cs.usrName); + free(cs.pwd); + free(cs.dbName); + cs.dbiDrvrDir = NULL; + cs.drvrName = NULL; + cs.host = NULL; + cs.usrName = NULL; + cs.pwd = NULL; + cs.dbName = NULL; + free(pszFileDfltTplName); + pszFileDfltTplName = NULL; +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf + free(pModConf->tplName); + free(pModConf->dbiDrvrDir); +ENDfreeCnf + + + + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->tplName = NULL; +} + + +BEGINnewActInst + struct cnfparamvals *pvals; + uchar *tplToUse; + int i; +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + CODE_STD_STRING_REQUESTnewActInst(1) + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "server")) { + pData->host = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "db")) { + pData->dbName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "uid")) { + pData->usrName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "pwd")) { + pData->pwd = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "driver")) { + pData->drvrName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("omlibdbi: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + tplToUse = (pData->tplName == NULL) ? (uchar*)strdup((char*)getDfltTpl()) : pData->tplName; + CHKiRet(OMSRsetEntry(*ppOMSR, 0, tplToUse, OMSR_RQD_TPL_OPT_SQL)); +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINparseSelectorAct +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + if(!strncmp((char*) p, ":omlibdbi:", sizeof(":omlibdbi:") - 1)) { + p += sizeof(":omlibdbi:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + } else { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + CHKiRet(createInstance(&pData)); + /* no create the instance based on what we currently have */ + if(cs.drvrName == NULL) { + LogError(0, RS_RET_NO_DRIVERNAME, "omlibdbi: no db driver name given - action can not " + "be created"); + ABORT_FINALIZE(RS_RET_NO_DRIVERNAME); + } + + if((pData->drvrName = (uchar*) strdup((char*)cs.drvrName)) == NULL) ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + /* NULL values are supported because drivers have different needs. + * They will err out on connect. -- rgerhards, 2008-02-15 + */ + if(cs.host != NULL) + CHKmalloc(pData->host = (uchar*) strdup((char*)cs.host)); + if(cs.usrName != NULL) + CHKmalloc(pData->usrName = (uchar*) strdup((char*)cs.usrName)); + if(cs.dbName != NULL) + CHKmalloc(pData->dbName = (uchar*) strdup((char*)cs.dbName)); + if(cs.pwd != NULL) + CHKmalloc(pData->pwd = (uchar*) strdup((char*)cs.pwd)); + if(cs.dbiDrvrDir != NULL) + CHKmalloc(loadModConf->dbiDrvrDir = (uchar*) strdup((char*)cs.dbiDrvrDir)); + iRet = cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_RQD_TPL_OPT_SQL, getDfltTpl()); +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit + /* if we initialized libdbi, we now need to cleanup */ + if(bDbiInitialized) { +# ifdef HAVE_DBI_R + dbi_shutdown_r(dbiInst); +# else + dbi_shutdown(); +# endif + } +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_TXIF_OMOD_QUERIES /* we support the transactional interface! */ +ENDqueryEtryPt + + +/* Reset config variables for this module to default values. + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + free(cs.dbiDrvrDir); + cs.dbiDrvrDir = NULL; + free(cs.drvrName); + cs.drvrName = NULL; + free(cs.host); + cs.host = NULL; + free(cs.usrName); + cs.usrName = NULL; + free(cs.pwd); + cs.pwd = NULL; + free(cs.dbName); + cs.dbName = NULL; + RETiRet; +} + + +BEGINmodInit() +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr +# ifndef HAVE_DBI_TXSUPP + DBGPRINTF("omlibdbi: no transaction support in libdbi\n"); +# endif + CHKiRet(regCfSysLineHdlr2((uchar *)"actionlibdbidriverdirectory", 0, eCmdHdlrGetWord, NULL, &cs.dbiDrvrDir, + STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionlibdbidriver", 0, eCmdHdlrGetWord, NULL, &cs.drvrName, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionlibdbihost", 0, eCmdHdlrGetWord, NULL, &cs.host, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionlibdbiusername", 0, eCmdHdlrGetWord, NULL, &cs.usrName, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionlibdbipassword", 0, eCmdHdlrGetWord, NULL, &cs.pwd, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionlibdbidbname", 0, eCmdHdlrGetWord, NULL, &cs.dbName, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); + DBGPRINTF("omlibdbi compiled with version %s loaded, libdbi version %s\n", VERSION, dbi_version()); +ENDmodInit + +/* vim:set ai: + */ diff --git a/plugins/ommail/Makefile.am b/plugins/ommail/Makefile.am new file mode 100644 index 0000000..97c9296 --- /dev/null +++ b/plugins/ommail/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = ommail.la + +ommail_la_SOURCES = ommail.c +ommail_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +ommail_la_LDFLAGS = -module -avoid-version +ommail_la_LIBADD = diff --git a/plugins/ommail/Makefile.in b/plugins/ommail/Makefile.in new file mode 100644 index 0000000..a352aab --- /dev/null +++ b/plugins/ommail/Makefile.in @@ -0,0 +1,796 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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So far, we + * only support direct SMTP, that is talking to a SMTP server. In the long + * term, support for using sendmail should also be implemented. Please note + * that the SMTP protocol implementation is a very bare one. We support + * RFC821/822 messages, without any authentication and any other nice + * features (no MIME, no nothing). It is assumed that proper firewalling + * and/or STMP server configuration is used together with this module. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * File begun on 2008-04-04 by RGerhards + * + * Copyright 2008-2014 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <unistd.h> +#include <errno.h> +#include <netdb.h> +#include <time.h> +#include <sys/socket.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "cfsysline.h" +#include "module-template.h" +#include "errmsg.h" +#include "datetime.h" +#include "glbl.h" +#include "parserif.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("ommail") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(datetime) + +/* we add a little support for multiple recipients. We do this via a + * singly-linked list, enqueued from the top. -- rgerhards, 2008-08-04 + */ +typedef struct toRcpt_s toRcpt_t; +struct toRcpt_s { + uchar *pszTo; + toRcpt_t *pNext; +}; + +typedef struct _instanceData { + uchar *tplName; /* format template to use */ + uchar *constSubject; /* if non-NULL, constant string to be used as subject */ + int8_t iMode; /* 0 - smtp, 1 - sendmail */ + sbool bHaveSubject; /* is a subject configured? (if so, it is the second string provided by rsyslog core) */ + sbool bEnableBody; /* is a body configured? (if so, it is the second string provided by rsyslog core) */ + union { + struct { + uchar *pszSrv; + uchar *pszSrvPort; + uchar *pszFrom; + toRcpt_t *lstRcpt; + } smtp; + } md; /* mode-specific data */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + union { + struct { + char RcvBuf[1024]; /* buffer for receiving server responses */ + size_t lenRcvBuf; + size_t iRcvBuf; /* current index into the rcvBuf (buf empty if iRcvBuf == lenRcvBuf) */ + int sock; /* socket to this server (most important when we do multiple msgs per mail) */ + } smtp; + } md; /* mode-specific data */ +} wrkrInstanceData_t; + +typedef struct configSettings_s { + toRcpt_t *lstRcpt; + uchar *pszSrv; + uchar *pszSrvPort; + uchar *pszFrom; + uchar *pszSubject; + int bEnableBody; /* should a mail body be generated? (set to 0 eg for SMS gateways) */ +} configSettings_t; +static configSettings_t cs; + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "server", eCmdHdlrGetWord, CNFPARAM_REQUIRED }, + { "port", eCmdHdlrGetWord, CNFPARAM_REQUIRED }, + { "mailfrom", eCmdHdlrGetWord, CNFPARAM_REQUIRED }, + { "mailto", eCmdHdlrArray, CNFPARAM_REQUIRED }, + { "subject.template", eCmdHdlrGetWord, 0 }, + { "subject.text", eCmdHdlrString, 0 }, + { "body.enable", eCmdHdlrBinary, 0 }, + { "template", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + + + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + cs.lstRcpt = NULL; + cs.pszSrv = NULL; + cs.pszSrvPort = NULL; + cs.pszFrom = NULL; + cs.pszSubject = NULL; + cs.bEnableBody = 1; /* should a mail body be generated? (set to 0 eg for SMS gateways) */ +ENDinitConfVars + +/* forward definitions (as few as possible) */ +static rsRetVal Send(int sock, const char *msg, size_t len); +static rsRetVal readResponse(wrkrInstanceData_t *pWrkrData, int *piState, int iExpected); + + +/* helpers for handling the recipient lists */ + +/* destroy a complete recipient list */ +static void lstRcptDestruct(toRcpt_t *pRoot) +{ + toRcpt_t *pDel; + + while(pRoot != NULL) { + pDel = pRoot; + pRoot = pRoot->pNext; + /* ready to disalloc */ + free(pDel->pszTo); + free(pDel); + } +} + + +/* This function adds a recipient to the specified list. + * The recipient address storage is handed over -- the caller must NOT delete it. + */ +static rsRetVal +addRcpt(toRcpt_t **ppLstRcpt, uchar *newRcpt) +{ + DEFiRet; + toRcpt_t *pNew = NULL; + + CHKmalloc(pNew = calloc(1, sizeof(toRcpt_t))); + + pNew->pszTo = newRcpt; + pNew->pNext = *ppLstRcpt; + *ppLstRcpt = pNew; + + DBGPRINTF("ommail::addRcpt adds recipient %s\n", newRcpt); + +finalize_it: + if(iRet != RS_RET_OK) { + free(pNew); + free(newRcpt); /* in any case, this is no longer needed */ + } + + RETiRet; +} + +/* This function is called when a new recipient email address is to be + * added. rgerhards, 2008-08-04 + */ +static rsRetVal +legacyConfAddRcpt(void __attribute__((unused)) *pVal, uchar *pNewVal) +{ + return addRcpt(&cs.lstRcpt, pNewVal); +} + + +/* output the recipient list to the mail server + * iStatusToCheck < 0 means no checking should happen + */ +static rsRetVal +WriteRcpts(wrkrInstanceData_t *pWrkrData, uchar *pszOp, size_t lenOp, int iStatusToCheck) +{ + toRcpt_t *pRcpt; + int iState; + DEFiRet; + + assert(lenOp != 0); + + for(pRcpt = pWrkrData->pData->md.smtp.lstRcpt ; pRcpt != NULL ; pRcpt = pRcpt->pNext) { + DBGPRINTF("Sending '%s: <%s>'\n", pszOp, pRcpt->pszTo); + CHKiRet(Send(pWrkrData->md.smtp.sock, (char*)pszOp, lenOp)); + CHKiRet(Send(pWrkrData->md.smtp.sock, ":<", sizeof(":<") - 1)); + CHKiRet(Send(pWrkrData->md.smtp.sock, (char*)pRcpt->pszTo, strlen((char*)pRcpt->pszTo))); + CHKiRet(Send(pWrkrData->md.smtp.sock, ">\r\n", sizeof(">\r\n") - 1)); + if(iStatusToCheck >= 0) + CHKiRet(readResponse(pWrkrData, &iState, iStatusToCheck)); + } + +finalize_it: + RETiRet; +} + + +/* output the recipient list in rfc2822 format + */ +static rsRetVal +WriteTos(wrkrInstanceData_t *pWrkrData, uchar *pszOp, size_t lenOp) +{ + toRcpt_t *pRcpt; + int iTos; + DEFiRet; + + assert(lenOp != 0); + + CHKiRet(Send(pWrkrData->md.smtp.sock, (char*)pszOp, lenOp)); + CHKiRet(Send(pWrkrData->md.smtp.sock, ": ", sizeof(": ") - 1)); + + for(pRcpt = pWrkrData->pData->md.smtp.lstRcpt, iTos = 0; pRcpt != NULL ; pRcpt = pRcpt->pNext, iTos++) { + DBGPRINTF("Sending '%s: <%s>'\n", pszOp, pRcpt->pszTo); + if(iTos) + CHKiRet(Send(pWrkrData->md.smtp.sock, ", ", sizeof(", ") - 1)); + CHKiRet(Send(pWrkrData->md.smtp.sock, "<", sizeof("<") - 1)); + CHKiRet(Send(pWrkrData->md.smtp.sock, (char*)pRcpt->pszTo, strlen((char*)pRcpt->pszTo))); + CHKiRet(Send(pWrkrData->md.smtp.sock, ">", sizeof(">") - 1)); + } + + CHKiRet(Send(pWrkrData->md.smtp.sock, "\r\n", sizeof("\r\n") - 1)); + +finalize_it: + RETiRet; +} +/* end helpers for handling the recipient lists */ + +BEGINcreateInstance +CODESTARTcreateInstance + pData->constSubject = NULL; + pData->bEnableBody = 1; +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->tplName); + if(pData->iMode == 0) { + free(pData->md.smtp.pszSrv); + free(pData->md.smtp.pszSrvPort); + free(pData->md.smtp.pszFrom); + lstRcptDestruct(pData->md.smtp.lstRcpt); + } +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + printf("mail"); /* TODO: extend! */ +ENDdbgPrintInstInfo + + +/* TCP support code, should probably be moved to net.c or some place else... -- rgerhards, 2008-04-04 */ + +/* "receive" a character from the remote server. A single character + * is returned. Returns RS_RET_NO_MORE_DATA if the server has closed + * the connection and RS_RET_IO_ERROR if something goes wrong. This + * is a blocking read. + * rgerhards, 2008-04-04 + */ +static rsRetVal +getRcvChar(wrkrInstanceData_t *pWrkrData, char *pC) +{ + DEFiRet; + ssize_t lenBuf; + + if(pWrkrData->md.smtp.iRcvBuf == pWrkrData->md.smtp.lenRcvBuf) { /* buffer empty? */ + /* yes, we need to read the next server response */ + do { + lenBuf = recv(pWrkrData->md.smtp.sock, pWrkrData->md.smtp.RcvBuf, + sizeof(pWrkrData->md.smtp.RcvBuf), 0); + if(lenBuf == 0) { + ABORT_FINALIZE(RS_RET_NO_MORE_DATA); + } else if(lenBuf < 0) { + if(errno != EAGAIN) { + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + } else { + /* good read */ + pWrkrData->md.smtp.iRcvBuf = 0; + pWrkrData->md.smtp.lenRcvBuf = lenBuf; + } + + } while(lenBuf < 1); + } + + /* when we reach this point, we have a non-empty buffer */ + *pC = pWrkrData->md.smtp.RcvBuf[pWrkrData->md.smtp.iRcvBuf++]; + +finalize_it: + RETiRet; +} + + +/* close the mail server connection + * rgerhards, 2008-04-08 + */ +static rsRetVal +serverDisconnect(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + assert(pWrkrData != NULL); + + if(pWrkrData->md.smtp.sock != -1) { + close(pWrkrData->md.smtp.sock); + pWrkrData->md.smtp.sock = -1; + } + + RETiRet; +} + + +/* open a connection to the mail server + * rgerhards, 2008-04-04 + */ +static rsRetVal +serverConnect(wrkrInstanceData_t *pWrkrData) +{ + struct addrinfo *res = NULL; + struct addrinfo hints; + const char *smtpPort; + const char *smtpSrv; + char errStr[1024]; + instanceData *pData; + DEFiRet; + + pData = pWrkrData->pData; + + if(pData->md.smtp.pszSrv == NULL) + smtpSrv = "127.0.0.1"; + else + smtpSrv = (char*)pData->md.smtp.pszSrv; + + if(pData->md.smtp.pszSrvPort == NULL) + smtpPort = "25"; + else + smtpPort = (char*)pData->md.smtp.pszSrvPort; + + memset(&hints, 0, sizeof(hints)); + hints.ai_family = AF_UNSPEC; /* TODO: make configurable! */ + hints.ai_socktype = SOCK_STREAM; + if(getaddrinfo(smtpSrv, smtpPort, &hints, &res) != 0) { + DBGPRINTF("error %d in getaddrinfo\n", errno); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + if((pWrkrData->md.smtp.sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol)) == -1) { + DBGPRINTF("couldn't create send socket, reason %s", rs_strerror_r(errno, errStr, sizeof(errStr))); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + if(connect(pWrkrData->md.smtp.sock, res->ai_addr, res->ai_addrlen) != 0) { + DBGPRINTF("create tcp connection failed, reason %s", rs_strerror_r(errno, errStr, sizeof(errStr))); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + +finalize_it: + if(res != NULL) + freeaddrinfo(res); + + if(iRet != RS_RET_OK) { + if(pWrkrData->md.smtp.sock != -1) { + close(pWrkrData->md.smtp.sock); + pWrkrData->md.smtp.sock = -1; + } + } + + RETiRet; +} + + +/* send text to the server, blocking send */ +static rsRetVal +Send(const int sock, const char *const __restrict__ msg, const size_t len) +{ + DEFiRet; + size_t offsBuf = 0; + ssize_t lenSend; + + assert(msg != NULL); + + if(len == 0) /* it's valid, but does not make much sense ;) */ + FINALIZE; + + do { + lenSend = send(sock, msg + offsBuf, len - offsBuf, 0); + if(lenSend == -1) { + if(errno != EAGAIN) { + DBGPRINTF("message not (smtp/tcp)send, errno %d", errno); + ABORT_FINALIZE(RS_RET_TCP_SEND_ERROR); + } + } else if(lenSend != (ssize_t) (len - offsBuf)) { + offsBuf += lenSend; /* on to next round... */ + } else { + FINALIZE; + } + } while(1); + +finalize_it: + RETiRet; +} + + +/* send body text to the server, blocking send + * The body is special in that we must escape a leading dot inside a line + */ +static rsRetVal +bodySend(wrkrInstanceData_t *pWrkrData, char *msg, size_t len) +{ + DEFiRet; + char szBuf[2048]; + size_t iSrc; + size_t iBuf = 0; + int bHadCR = 0; + int bInStartOfLine = 1; + + assert(pWrkrData != NULL); + assert(msg != NULL); + + for(iSrc = 0 ; iSrc < len ; ++iSrc) { + if(iBuf >= sizeof(szBuf) - 1) { /* one is reserved for our extra dot */ + CHKiRet(Send(pWrkrData->md.smtp.sock, szBuf, iBuf)); + iBuf = 0; + } + szBuf[iBuf++] = msg[iSrc]; + switch(msg[iSrc]) { + case '\r': + bHadCR = 1; + break; + case '\n': + if(bHadCR) + bInStartOfLine = 1; + bHadCR = 0; + break; + case '.': + if(bInStartOfLine) + szBuf[iBuf++] = '.'; /* space is always reserved for this! */ + /*FALLTHROUGH*/ + default: + bInStartOfLine = 0; + bHadCR = 0; + break; + } + } + + if(iBuf > 0) { /* incomplete buffer to send (the *usual* case)? */ + CHKiRet(Send(pWrkrData->md.smtp.sock, szBuf, iBuf)); + } + +finalize_it: + RETiRet; +} + + +/* read response line from server + */ +static rsRetVal +readResponseLn(wrkrInstanceData_t *pWrkrData, char *pLn, size_t lenLn, size_t *const __restrict__ respLen) +{ + DEFiRet; + size_t i = 0; + char c; + + assert(pWrkrData != NULL); + assert(pLn != NULL); + + do { + CHKiRet(getRcvChar(pWrkrData, &c)); + if(c == '\n') + break; + if(i < (lenLn - 1)) /* if line is too long, we simply discard the rest */ + pLn[i++] = c; + } while(1); + DBGPRINTF("smtp server response: %s\n", pLn); + /* do not remove, this is helpful in troubleshooting SMTP probs! */ + +finalize_it: + pLn[i] = '\0'; + *respLen = i; + RETiRet; +} + + +/* read numerical response code from server and compare it to requried response code. + * If they two don't match, return RS_RET_SMTP_ERROR. + * rgerhards, 2008-04-07 + */ +static rsRetVal +readResponse(wrkrInstanceData_t *pWrkrData, int *piState, int iExpected) +{ + DEFiRet; + int bCont; + char buf[128]; + size_t respLen; + + assert(pWrkrData != NULL); + assert(piState != NULL); + + bCont = 1; + do { + CHKiRet(readResponseLn(pWrkrData, buf, sizeof(buf), &respLen)); + if(respLen < 4) /* we treat too-short responses as error */ + ABORT_FINALIZE(RS_RET_SMTP_ERROR); + if(buf[3] != '-') { /* last or only response line? */ + bCont = 0; + *piState = buf[0] - '0'; + *piState = *piState * 10 + buf[1] - '0'; + *piState = *piState * 10 + buf[2] - '0'; + if(*piState != iExpected) + ABORT_FINALIZE(RS_RET_SMTP_ERROR); + } + } while(bCont); + +finalize_it: + RETiRet; +} + + +/* create a timestamp suitable for use with the Date: SMTP body header + * rgerhards, 2008-04-08 + */ +static void +mkSMTPTimestamp(uchar *pszBuf, size_t lenBuf) +{ + time_t tCurr; + struct tm tmCurr; + static const char szDay[][4] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; + static const char szMonth[][4] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", + "Oct", "Nov", "Dec"}; + + datetime.GetTime(&tCurr); + gmtime_r(&tCurr, &tmCurr); + snprintf((char*)pszBuf, lenBuf, "Date: %s, %2d %s %4d %02d:%02d:%02d +0000\r\n", szDay[tmCurr.tm_wday], + tmCurr.tm_mday, + szMonth[tmCurr.tm_mon], 1900 + tmCurr.tm_year, tmCurr.tm_hour, tmCurr.tm_min, tmCurr.tm_sec); +} + + +/* send a message via SMTP + * rgerhards, 2008-04-04 + */ +static rsRetVal +sendSMTP(wrkrInstanceData_t *pWrkrData, uchar *body, uchar *subject) +{ + DEFiRet; + int iState; /* SMTP state */ + instanceData *pData; + uchar szDateBuf[64]; + + pData = pWrkrData->pData; + + CHKiRet(serverConnect(pWrkrData)); + CHKiRet(readResponse(pWrkrData, &iState, 220)); + + CHKiRet(Send(pWrkrData->md.smtp.sock, "HELO ", 5)); + CHKiRet(Send(pWrkrData->md.smtp.sock, (char*)glbl.GetLocalHostName(), + strlen((char*)glbl.GetLocalHostName()))); + CHKiRet(Send(pWrkrData->md.smtp.sock, "\r\n", sizeof("\r\n") - 1)); + CHKiRet(readResponse(pWrkrData, &iState, 250)); + + CHKiRet(Send(pWrkrData->md.smtp.sock, "MAIL FROM:<", sizeof("MAIL FROM:<") - 1)); + CHKiRet(Send(pWrkrData->md.smtp.sock, (char*)pData->md.smtp.pszFrom, strlen((char*)pData->md.smtp.pszFrom))); + CHKiRet(Send(pWrkrData->md.smtp.sock, ">\r\n", sizeof(">\r\n") - 1)); + CHKiRet(readResponse(pWrkrData, &iState, 250)); + + CHKiRet(WriteRcpts(pWrkrData, (uchar*)"RCPT TO", sizeof("RCPT TO") - 1, 250)); + + CHKiRet(Send(pWrkrData->md.smtp.sock, "DATA\r\n", sizeof("DATA\r\n") - 1)); + CHKiRet(readResponse(pWrkrData, &iState, 354)); + + /* now come the data part */ + /* header */ + mkSMTPTimestamp(szDateBuf, sizeof(szDateBuf)); + CHKiRet(Send(pWrkrData->md.smtp.sock, (char*)szDateBuf, strlen((char*)szDateBuf))); + + CHKiRet(Send(pWrkrData->md.smtp.sock, "From: <", sizeof("From: <") - 1)); + CHKiRet(Send(pWrkrData->md.smtp.sock, (char*)pData->md.smtp.pszFrom, strlen((char*)pData->md.smtp.pszFrom))); + CHKiRet(Send(pWrkrData->md.smtp.sock, ">\r\n", sizeof(">\r\n") - 1)); + + CHKiRet(WriteTos(pWrkrData, (uchar*)"To", sizeof("To") - 1)); + + CHKiRet(Send(pWrkrData->md.smtp.sock, "Subject: ", sizeof("Subject: ") - 1)); + CHKiRet(Send(pWrkrData->md.smtp.sock, (char*)subject, strlen((char*)subject))); + CHKiRet(Send(pWrkrData->md.smtp.sock, "\r\n", sizeof("\r\n") - 1)); + + CHKiRet(Send(pWrkrData->md.smtp.sock, "X-Mailer: rsyslog-ommail\r\n", + sizeof("x-mailer: rsyslog-ommail\r\n") - 1)); + + CHKiRet(Send(pWrkrData->md.smtp.sock, "\r\n", sizeof("\r\n") - 1)); /* indicate end of header */ + + /* body */ + if(pData->bEnableBody) + CHKiRet(bodySend(pWrkrData, (char*)body, strlen((char*) body))); + + /* end of data, back to envelope transaction */ + CHKiRet(Send(pWrkrData->md.smtp.sock, "\r\n.\r\n", sizeof("\r\n.\r\n") - 1)); + CHKiRet(readResponse(pWrkrData, &iState, 250)); + + CHKiRet(Send(pWrkrData->md.smtp.sock, "QUIT\r\n", sizeof("QUIT\r\n") - 1)); + CHKiRet(readResponse(pWrkrData, &iState, 221)); + + /* we are finished, a new connection is created for each request, so let's close it now */ + CHKiRet(serverDisconnect(pWrkrData)); + +finalize_it: + RETiRet; +} + + +/* in tryResume we check if we can connect to the server in question. If that is OK, + * we close the connection without doing any actual SMTP transaction. It will be + * reopened during the actual send process. This may not be the best way to do it if + * there is a problem inside the SMTP transaction. However, we can't find that out without + * actually initiating something, and that would be bad. The logic here helps us + * correctly recover from an unreachable/down mail server, which is probably the majority + * of problem cases. For SMTP transaction problems, we will do lots of retries, but if it + * is a temporary problem, it will be fixed anyhow. So I consider this implementation to + * be clean enough, especially as I think other approaches have other weaknesses. + * rgerhards, 2008-04-08 + */ +BEGINtryResume +CODESTARTtryResume + CHKiRet(serverConnect(pWrkrData)); + CHKiRet(serverDisconnect(pWrkrData)); /* if we fail, we will never reach this line */ +finalize_it: + if(iRet == RS_RET_IO_ERROR) + iRet = RS_RET_SUSPENDED; +ENDtryResume + + +BEGINdoAction + uchar *subject; + const instanceData *const __restrict__ pData = pWrkrData->pData; +CODESTARTdoAction + DBGPRINTF("ommail doAction()\n"); + + if(pData->constSubject != NULL) + subject = pData->constSubject; + else if(pData->bHaveSubject) + subject = ppString[1]; + else + subject = (uchar*)"message from rsyslog"; + + iRet = sendSMTP(pWrkrData, ppString[0], subject); + if(iRet != RS_RET_OK) { + DBGPRINTF("error sending mail, suspending\n"); + iRet = RS_RET_SUSPENDED; + } +ENDdoAction + + + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->tplName = NULL; + pData->constSubject = NULL; +} + + +BEGINnewActInst + struct cnfparamvals *pvals; + uchar *tplSubject = NULL; + int i, j; +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "server")) { + pData->md.smtp.pszSrv = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "port")) { + pData->md.smtp.pszSrvPort = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "mailfrom")) { + pData->md.smtp.pszFrom = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "mailto")) { + for(j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + addRcpt(&(pData->md.smtp.lstRcpt), + (uchar*)es_str2cstr(pvals[i].val.d.ar->arr[j], NULL)); + } + } else if(!strcmp(actpblk.descr[i].name, "subject.template")) { + if(pData->constSubject != NULL) { + parser_errmsg("ommail: only one of subject.template, subject.text " + "can be set"); + ABORT_FINALIZE(RS_RET_DUP_PARAM); + } + tplSubject = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "subject.text")) { + if(tplSubject != NULL) { + parser_errmsg("ommail: only one of subject.template, subject.text " + "can be set"); + ABORT_FINALIZE(RS_RET_DUP_PARAM); + } + pData->constSubject = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "body.enable")) { + pData->bEnableBody = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + DBGPRINTF("ommail: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + if(tplSubject == NULL) { + /* if no subject is configured, we need just one template string */ + CODE_STD_STRING_REQUESTparseSelectorAct(1) + } else { + CODE_STD_STRING_REQUESTparseSelectorAct(2) + pData->bHaveSubject = 1; + /* NOTE: tplSubject memory is *handed over* down here below - do NOT free() */ + CHKiRet(OMSRsetEntry(*ppOMSR, 1, tplSubject, OMSR_NO_RQD_TPL_OPTS)); + } + + if(pData->tplName == NULL) { + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*) strdup("RSYSLOG_FileFormat"), + OMSR_NO_RQD_TPL_OPTS)); + } else { + CHKiRet(OMSRsetEntry(*ppOMSR, 0, + (uchar*) strdup((char*) pData->tplName), + OMSR_NO_RQD_TPL_OPTS)); + } +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINparseSelectorAct +CODESTARTparseSelectorAct + if(!strncmp((char*) p, ":ommail:", sizeof(":ommail:") - 1)) { + p += sizeof(":ommail:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + } else { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + if((iRet = createInstance(&pData)) != RS_RET_OK) + FINALIZE; + + /* TODO: check strdup() result */ + + if(cs.pszFrom == NULL) { + LogError(0, RS_RET_MAIL_NO_FROM, "no sender address given - specify $ActionMailFrom"); + ABORT_FINALIZE(RS_RET_MAIL_NO_FROM); + } + if(cs.lstRcpt == NULL) { + LogError(0, RS_RET_MAIL_NO_TO, "no recipient address given - specify $ActionMailTo"); + ABORT_FINALIZE(RS_RET_MAIL_NO_TO); + } + + pData->md.smtp.pszFrom = (uchar*) strdup((char*)cs.pszFrom); + pData->md.smtp.lstRcpt = cs.lstRcpt; /* we "hand over" this memory */ + cs.lstRcpt = NULL; /* note: this is different from pre-3.21.2 versions! */ + + if(cs.pszSubject == NULL) { + /* if no subject is configured, we need just one template string */ + CODE_STD_STRING_REQUESTparseSelectorAct(1) + } else { + CODE_STD_STRING_REQUESTparseSelectorAct(2) + pData->bHaveSubject = 1; + CHKiRet(OMSRsetEntry(*ppOMSR, 1, (uchar*)strdup((char*) cs.pszSubject), OMSR_NO_RQD_TPL_OPTS)); + } + if(cs.pszSrv != NULL) + pData->md.smtp.pszSrv = (uchar*) strdup((char*)cs.pszSrv); + if(cs.pszSrvPort != NULL) + pData->md.smtp.pszSrvPort = (uchar*) strdup((char*)cs.pszSrvPort); + pData->bEnableBody = cs.bEnableBody; + + /* process template */ + iRet = cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_NO_RQD_TPL_OPTS, (uchar*) "RSYSLOG_FileFormat"); +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +/* Free string config variables and reset them to NULL (not necessarily the default!) */ +static rsRetVal freeConfigVariables(void) +{ + DEFiRet; + + free(cs.pszSrv); + cs.pszSrv = NULL; + free(cs.pszSrvPort); + cs.pszSrvPort = NULL; + free(cs.pszFrom); + cs.pszFrom = NULL; + lstRcptDestruct(cs.lstRcpt); + cs.lstRcpt = NULL; + + RETiRet; +} + + +BEGINmodExit +CODESTARTmodExit + /* cleanup our allocations */ + freeConfigVariables(); + + /* release what we no longer need */ + objRelease(datetime, CORE_COMPONENT); + objRelease(glbl, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_CNFNAME_QUERIES +ENDqueryEtryPt + + +/* Reset config variables for this module to default values. + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + cs.bEnableBody = 1; + iRet = freeConfigVariables(); + RETiRet; +} + + +BEGINmodInit() +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + /* tell which objects we need */ + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + + DBGPRINTF("ommail version %s initializing\n", VERSION); + + CHKiRet(omsdRegCFSLineHdlr( (uchar *)"actionmailsmtpserver", 0, eCmdHdlrGetWord, NULL, &cs.pszSrv, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr( (uchar *)"actionmailsmtpport", 0, eCmdHdlrGetWord, NULL, &cs.pszSrvPort, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr( (uchar *)"actionmailfrom", 0, eCmdHdlrGetWord, NULL, &cs.pszFrom, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr( (uchar *)"actionmailto", 0, eCmdHdlrGetWord, legacyConfAddRcpt, NULL, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr( (uchar *)"actionmailsubject", 0, eCmdHdlrGetWord, NULL, &cs.pszSubject, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr( (uchar *)"actionmailenablebody", 0, eCmdHdlrBinary, NULL, &cs.bEnableBody, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr( (uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); 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action(type="ommongodb" db="..." collection="..." template="...") + +Note: if no template is specified, a default schema will be used. That schema +contains proper data types. However, if a template is specified, only strings +are supported. This is a restriction of the rsyslog v6 core engine. This +changed in v7. + +If templates are used, it is suggested to use list-based templates. Constants +can ONLY be inserted with list-based templates, as only these provide the +capability to specify a field name (outname parameter). + +A very basic example is: + +*.* action(type="ommongodb" db="logs" collection="syslog") + +A more complex example: +*.* action(type="ommongodb" uristr="mongodb://vulture:9091,vulture2:9091/?replicaset=Vulture&ssl=true" ssl_cert="/var/db/mongodb/mongod.pem" ssl_ca="/var/db/mongodb/ca.pem" db="logs" collection="syslog" allowed_error_codes="11000") + +Please see the script clean-mongo-syslog for an example of how to +purge old records from MongoDB using PyMongo. It can be run +daily or weekly from cron. + +You may also wish to index some or all of the columns in MongoDB. +The following statements may help to create the indexes: + +To see the existing indexes: + + db.syslog.getIndexes() + +To create them: + + db.syslog.ensureIndex( { sys : 1 } ) + db.syslog.ensureIndex( { time : 1 } ) + db.syslog.ensureIndex( { syslog_fac : 1 } ) + db.syslog.ensureIndex( { syslog_sever : 1 } ) + db.syslog.ensureIndex( { syslog_tag : 1 } ) + db.syslog.ensureIndex( { procid : 1 } ) + db.syslog.ensureIndex( { pid : 1 } ) + + diff --git a/plugins/ommongodb/ommongodb.c b/plugins/ommongodb/ommongodb.c new file mode 100644 index 0000000..83f3656 --- /dev/null +++ b/plugins/ommongodb/ommongodb.c @@ -0,0 +1,786 @@ +/* ommongodb.c + * Output module for mongodb. + * + * Copyright 2007-2019 Rainer Gerhards and Adiscon GmbH. + * + * Copyright 2017 Jeremie Jourdin and Hugo Soszynski and aDvens + * Remove deprecated libmongo-client and use libmongoc (mongo-c-driver) + * This new library handle TLS and replicaset + * + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <ctype.h> +#include <errno.h> +#include <assert.h> +#include <signal.h> +#include <stdint.h> +#include <time.h> +#include <json.h> +#include "rsyslog.h" +/* we need this to avoid issues with older versions of libbson */ +PRAGMA_DIAGNOSTIC_PUSH +PRAGMA_IGNORE_Wpragmas +PRAGMA_IGNORE_Wunknown_warning_option +PRAGMA_IGNORE_Wunknown_attribute +PRAGMA_IGNORE_Wexpansion_to_defined +PRAGMA_IGNORE_Wstrict_prototypes +PRAGMA_IGNORE_Wold_style_definition +#include <mongoc.h> +#include <bson.h> +PRAGMA_DIAGNOSTIC_POP + +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "datetime.h" +#include "errmsg.h" +#include "cfsysline.h" +#include "parserif.h" +#include "unicode-helper.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("ommongodb") +/* internal structures + */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(datetime) + +typedef struct _instanceData { + struct json_tokener *json_tokener; /* only if (tplName != NULL) */ + mongoc_client_t *client; + mongoc_collection_t *collection; + bson_error_t error; + char *server; + char *port; + char *uristr; + char *ssl_ca; + char *ssl_cert; + char *uid; + char *pwd; + uint32_t allowed_error_codes[256]; + int allowed_error_codes_nbr; + char *db; + char *collection_name; + char *tplName; + int bErrMsgPermitted; /* only one errmsg permitted per connection */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "server", eCmdHdlrGetWord, 0 }, + { "serverport", eCmdHdlrGetWord, 0 }, + { "uristr", eCmdHdlrGetWord, 0 }, + { "ssl_ca", eCmdHdlrGetWord, 0 }, + { "ssl_cert", eCmdHdlrGetWord, 0 }, + { "uid", eCmdHdlrGetWord, 0 }, + { "pwd", eCmdHdlrGetWord, 0 }, + { "db", eCmdHdlrGetWord, 0 }, + { "collection", eCmdHdlrGetWord, 0 }, + { "template", eCmdHdlrGetWord, 0 }, + { "allowed_error_codes", eCmdHdlrArray, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +static pthread_mutex_t mutDoAct = PTHREAD_MUTEX_INITIALIZER; + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + /* use this to specify if select features are supported by this + * plugin. If not, the framework will handle that. Currently, only + * RepeatedMsgReduction ("last message repeated n times") is optional. + */ + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + +static void closeMongoDB(instanceData *pData) +{ + if(pData->client != NULL) { + if (pData->collection != NULL) { + mongoc_collection_destroy (pData->collection); + pData->collection = NULL; + } + mongoc_client_destroy (pData->client); + pData->client = NULL; + mongoc_cleanup (); + DBGPRINTF("ommongodb: Mongodb connection closed."); + } +} + + +BEGINfreeInstance +CODESTARTfreeInstance + closeMongoDB(pData); + + if (pData->json_tokener != NULL) + json_tokener_free(pData->json_tokener); + free(pData->server); + free(pData->port); + free(pData->ssl_ca); + free(pData->ssl_cert); + free(pData->uristr); + free(pData->uid); + free(pData->pwd); + free(pData->db); + free(pData->collection_name); + free(pData->tplName); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + /* nothing special here */ + (void)pData; +ENDdbgPrintInstInfo + + +/* report error that occurred during *last* operation + */ +static void +reportMongoError(instanceData *pData) +{ + if(pData->bErrMsgPermitted) { + LogError(0, RS_RET_ERR, "ommongodb: error: %s", pData->error.message); + pData->bErrMsgPermitted = 0; + } +} + + +/* The following function is responsible for initializing a + * MongoDB connection. + * Initially added 2004-10-28 mmeckelein + * Improved to check if server is available (ping) @kguillemot 2021-06-30 + */ +static rsRetVal initMongoDB(instanceData *pData, int bSilent) +{ + DEFiRet; + unsigned char retval; + + DBGPRINTF("ommongodb: uristr is '%s'", pData->uristr); + mongoc_init (); + pData->client = mongoc_client_new (pData->uristr); + if (pData->ssl_cert && pData->ssl_ca) { +#ifdef HAVE_MONGOC_CLIENT_SET_SSL_OPTS + mongoc_ssl_opt_t ssl_opts; + memset(&ssl_opts, 0, sizeof(mongoc_ssl_opt_t)); + ssl_opts.pem_file = pData->ssl_cert; + ssl_opts.ca_file = pData->ssl_ca; + mongoc_client_set_ssl_opts (pData->client, &ssl_opts); +#else + dbgprintf("ommongodb: mongo-c-driver was not built with SSL options, ssl directives will not be used."); +#endif + } + if(!pData->client) { + if(!bSilent) { + reportMongoError(pData); + dbgprintf("ommongodb: can not initialize MongoDB handle"); + } + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + pData->collection = mongoc_client_get_collection (pData->client, pData->db, pData->collection_name); + + // Try to contact server + bson_t *command, reply; + bson_error_t error; + command = BCON_NEW ("ping", BCON_INT32 (1)); + retval = mongoc_client_command_simple(pData->client, pData->db, command, NULL, &reply, &error); + bson_destroy(&reply); + bson_destroy(command); + if( !retval ) { + DBGPRINTF("ommongodb: ping server error (%u): %s \n", error.code, error.message); + closeMongoDB(pData); + reportMongoError(pData); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + +finalize_it: + RETiRet; +} + + +/* map syslog severity to lumberjack level + * TODO: consider moving this to msg.c - make some dirty "friend" references... + * rgerhards, 2012-03-19 + */ +static const char * +getLumberjackLevel(short severity) +{ + switch(severity) { + case 0: return "FATAL"; + case 1: + case 2: + case 3: return "ERROR"; + case 4: return "WARN"; + case 5: + case 6: return "INFO"; + case 7: return "DEBUG"; + default:DBGPRINTF("ommongodb: invalid syslog severity %u\n", severity); + return "INVLD"; + } +} + + +/* small helper: get integer power of 10 */ +static int +i10pow(int exp) +{ + int r = 1; + while(exp > 0) { + r *= 10; + exp--; + } + return r; +} +/* Return a BSON document when an user hasn't specified a template. + * In this mode, we use the standard document format, which is somewhat + * aligned to cee (as described in project lumberjack). Note that this is + * a moving target, so we may run out of sync (and stay so to retain + * backward compatibility, which we consider pretty important). + */ +static bson_t *getDefaultBSON(smsg_t *pMsg) +{ + bson_t *doc = NULL; + char *procid; short unsigned procid_free; rs_size_t procid_len; + char *tag; short unsigned tag_free; rs_size_t tag_len; + char *pid; short unsigned pid_free; rs_size_t pid_len; + char *sys; short unsigned sys_free; rs_size_t sys_len; + char *msg; short unsigned msg_free; rs_size_t msg_len; + int severity, facil; + int64 ts_gen, ts_rcv; /* timestamps: generated, received */ + int secfrac; + msgPropDescr_t cProp; /* we use internal implementation knowledge... */ + + cProp.id = PROP_PROGRAMNAME; + procid = (char*)MsgGetProp(pMsg, NULL, &cProp, &procid_len, &procid_free, NULL); + cProp.id = PROP_SYSLOGTAG; + tag = (char*)MsgGetProp(pMsg, NULL, &cProp, &tag_len, &tag_free, NULL); + cProp.id = PROP_PROCID; + pid = (char*)MsgGetProp(pMsg, NULL, &cProp, &pid_len, &pid_free, NULL); + cProp.id = PROP_HOSTNAME; + sys = (char*)MsgGetProp(pMsg, NULL, &cProp, &sys_len, &sys_free, NULL); + cProp.id = PROP_MSG; + msg = (char*)MsgGetProp(pMsg, NULL, &cProp, &msg_len, &msg_free, NULL); + + /* TODO: move to datetime? Refactor in any case! rgerhards, 2012-03-30 */ + ts_gen = (int64) datetime.syslogTime2time_t(&pMsg->tTIMESTAMP) * 1000; /* ms! */ + DBGPRINTF("ommongodb: ts_gen is %lld\n", (long long) ts_gen); + DBGPRINTF("ommongodb: secfrac is %d, precision %d\n", + pMsg->tTIMESTAMP.secfrac, + pMsg->tTIMESTAMP.secfracPrecision); + if(pMsg->tTIMESTAMP.secfracPrecision > 3) { + secfrac = pMsg->tTIMESTAMP.secfrac / i10pow(pMsg->tTIMESTAMP.secfracPrecision - 3); + } else if(pMsg->tTIMESTAMP.secfracPrecision < 3) { + secfrac = pMsg->tTIMESTAMP.secfrac * i10pow(3 - pMsg->tTIMESTAMP.secfracPrecision); + } else { + secfrac = pMsg->tTIMESTAMP.secfrac; + } + ts_gen += secfrac; + ts_rcv = (int64) datetime.syslogTime2time_t(&pMsg->tRcvdAt) * 1000; /* ms! */ + if(pMsg->tRcvdAt.secfracPrecision > 3) { + secfrac = pMsg->tRcvdAt.secfrac / i10pow(pMsg->tRcvdAt.secfracPrecision - 3); + } else if(pMsg->tRcvdAt.secfracPrecision < 3) { + secfrac = pMsg->tRcvdAt.secfrac * i10pow(3 - pMsg->tRcvdAt.secfracPrecision); + } else { + secfrac = pMsg->tRcvdAt.secfrac; + } + ts_rcv += secfrac; + + /* the following need to be int, but are short, so we need to xlat */ + severity = pMsg->iSeverity; + facil = pMsg->iFacility; + + doc = bson_new (); + bson_oid_t oid; + bson_oid_init (&oid, NULL); + BSON_APPEND_OID (doc, "_id", &oid); + BSON_APPEND_UTF8 (doc, "sys", sys); + BSON_APPEND_DATE_TIME (doc, "time", ts_gen); + BSON_APPEND_DATE_TIME (doc, "time_rcvd", ts_rcv); + BSON_APPEND_UTF8 (doc, "msg", msg); + BSON_APPEND_INT32 (doc, "syslog_fac", facil); + BSON_APPEND_INT32 (doc, "syslog_sever", severity); + BSON_APPEND_UTF8 (doc, "syslog_tag", tag); + BSON_APPEND_UTF8 (doc, "procid", procid); + BSON_APPEND_UTF8 (doc, "pid", pid); + BSON_APPEND_UTF8 (doc, "level", getLumberjackLevel(pMsg->iSeverity)); + + if(procid_free) free(procid); + if(tag_free) free(tag); + if(pid_free) free(pid); + if(sys_free) free(sys); + if(msg_free) free(msg); + + return doc; +} + +static bson_t *BSONFromJSONArray(struct json_object *json); +static bson_t *BSONFromJSONObject(struct json_object *json); +static int BSONAppendExtendedJSON(bson_t *doc, const char *name, struct json_object *json); + +/* Append a BSON variant of json to doc using name. Return TRUE on success */ +static int +BSONAppendJSONObject(bson_t *doc, const char *name, struct json_object *json) +{ + + switch(json != NULL ? json_object_get_type(json) : json_type_null) { + + case json_type_null: + return BSON_APPEND_NULL(doc, name); + case json_type_boolean: + return BSON_APPEND_BOOL(doc, name, json_object_get_boolean(json)); + case json_type_double: + return BSON_APPEND_DOUBLE(doc, name, json_object_get_double(json)); + case json_type_int: { + int64_t i; + + i = json_object_get_int64(json); + if (i >= INT32_MIN && i <= INT32_MAX) + return BSON_APPEND_INT32(doc, name, i); + else + return BSON_APPEND_INT64(doc, name, i); + } + case json_type_object: { + if (BSONAppendExtendedJSON(doc, name, json) == TRUE) + return TRUE; + + bson_t *sub; + int ok; + + sub = BSONFromJSONObject(json); + if (sub == NULL) + return FALSE; + ok = BSON_APPEND_DOCUMENT(doc, name, sub); + bson_destroy(sub); + return ok; + } + case json_type_array: { + bson_t *sub; + int ok; + + sub = BSONFromJSONArray(json); + if (sub == NULL) + return FALSE; + ok = BSON_APPEND_DOCUMENT(doc, name, sub); + bson_destroy(sub); + return ok; + } + case json_type_string: { + /* Convert text to ISODATE when needed */ + if (strncmp(name, "date", 5) == 0 || strncmp(name, "time", 5) == 0 ) { + struct tm tm; + const char *datestr = json_object_get_string(json); + if( strptime(datestr, "%Y-%m-%dT%H:%M:%S:%Z", &tm) != NULL || + strptime(datestr, "%Y-%m-%dT%H:%M:%S%Z", &tm) != NULL || + strptime(datestr, "%Y-%m-%dT%H:%M:%SZ", &tm) != NULL) { + tm.tm_isdst = -1; + time_t epoch; + int64 ts; + epoch = mktime(&tm); + ts = 1000 * (int64) epoch; + return BSON_APPEND_DATE_TIME (doc, name, ts); + } else { + DBGPRINTF("Unknown date format of field '%s' : '%s' \n", name, datestr); + } + } + else { + return BSON_APPEND_UTF8(doc, name, json_object_get_string(json)); + } + } + default: + return FALSE; + } +} + +/* Note: this function assumes that at max a single sub-object exists. This + * may need to be extended to cover cases where multiple objects are contained. + * However, I am not sure about the original intent of this contribution and + * just came across it when refactoring the json calls. As everything seems + * to work since quite a while, I do not make any changes now. + * rgerhards, 2016-04-09 + */ +static int +BSONAppendExtendedJSON(bson_t *doc, const char *name, struct json_object *json) +{ + struct json_object_iterator itEnd = json_object_iter_end(json); + struct json_object_iterator it = json_object_iter_begin(json); + + if (!json_object_iter_equal(&it, &itEnd)) { + const char *const key = json_object_iter_peek_name(&it); + if (strcmp(key, "$date") == 0) { + struct tm tm; + int64 ts; + struct json_object *val; + + val = json_object_iter_peek_value(&it); + DBGPRINTF("ommongodb: extended json date detected %s", json_object_get_string(val)); + tm.tm_isdst = -1; + strptime(json_object_get_string(val), "%Y-%m-%dT%H:%M:%S%z", &tm); + ts = 1000 * (int64) mktime(&tm); + return BSON_APPEND_DATE_TIME (doc, name, ts); + } + } + return FALSE; +} + +/* Return a BSON variant of json, which must be a json_type_array */ +static bson_t *BSONFromJSONArray(struct json_object *json) +{ + /* Way more than necessary */ + bson_t *doc = NULL; + size_t i, array_len; + + doc = bson_new(); + if(doc == NULL) + goto error; + + array_len = json_object_array_length(json); + for (i = 0; i < array_len; i++) { + char buf[sizeof(size_t) * CHAR_BIT + 1]; + + if ((size_t)snprintf(buf, sizeof(buf), "%zu", i) >= sizeof(buf)) + goto error; + if (BSONAppendJSONObject(doc, buf, json_object_array_get_idx(json, i)) == FALSE) + goto error; + } + + return doc; + +error: + if(doc != NULL) + bson_destroy(doc); + return NULL; +} + +/* Return a BSON variant of json, which must be a json_type_object */ +static bson_t *BSONFromJSONObject(struct json_object *json) +{ + bson_t *doc = NULL; + + doc = bson_new(); + if(doc == NULL) + return NULL; + + struct json_object_iterator it = json_object_iter_begin(json); + struct json_object_iterator itEnd = json_object_iter_end(json); + while (!json_object_iter_equal(&it, &itEnd)) { + if (BSONAppendJSONObject(doc, json_object_iter_peek_name(&it), + json_object_iter_peek_value(&it)) == FALSE) + goto error; + json_object_iter_next(&it); + } + + return doc; + +error: + if(doc != NULL) + bson_destroy(doc); + return NULL; + +} + +BEGINtryResume +CODESTARTtryResume + if(pWrkrData->pData->client == NULL) { + iRet = initMongoDB(pWrkrData->pData, 1); + } +ENDtryResume + +/* + * Check if `code` is in the allowed error codes. + * Return 1 if so, 0 otherwise. + */ +static int is_allowed_error_code(instanceData const* pData, uint32_t code) +{ + int i; + + i = 0; + while (i < pData->allowed_error_codes_nbr) { + if (code == pData->allowed_error_codes[i]) + return 1; + ++i; + } + return 0; +} + +BEGINdoAction_NoStrings + bson_t *doc = NULL; + instanceData *pData; +CODESTARTdoAction + pthread_mutex_lock(&mutDoAct); + pData = pWrkrData->pData; + /* see if we are ready to proceed */ + if(pData->client == NULL) { + CHKiRet(initMongoDB(pData, 0)); + } + + if(pData->tplName == NULL) { + doc = getDefaultBSON(*(smsg_t**)pMsgData); + } else { + doc = BSONFromJSONObject(*(struct json_object **)pMsgData); + } + if(doc == NULL) { + dbgprintf("ommongodb: error creating BSON doc\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + if (mongoc_collection_insert (pData->collection, MONGOC_INSERT_NONE, doc, NULL, &(pData->error) ) ) { + pData->bErrMsgPermitted = 1; + } else if (is_allowed_error_code(pData, pData->error.code)) { + dbgprintf("ommongodb: insert error: allowing error code\n"); + } else { + dbgprintf("ommongodb: insert error %u : %s \n", pData->error.code, pData->error.message); + reportMongoError(pData); + /* close on insert error to permit resume */ + closeMongoDB(pData); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + +finalize_it: + pthread_mutex_unlock(&mutDoAct); + if(doc != NULL) + bson_destroy(doc); +ENDdoAction + + +static void setInstParamDefaults(instanceData *pData) +{ + pData->server = NULL; + pData->port = NULL; + pData->uristr = NULL; + pData->ssl_ca = NULL; + pData->ssl_cert = NULL; + pData->uid = NULL; + pData->pwd = NULL; + pData->db = NULL; + pData->collection = NULL; + pData->tplName = NULL; + memset (pData->allowed_error_codes, 0, 256 * sizeof(uint32_t)); + pData->allowed_error_codes_nbr = 0; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + dbgprintf("ommongodb: Getting configuration.\n"); + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + dbgprintf("ommongodb: Parsing configuration directives.\n"); + CODE_STD_STRING_REQUESTnewActInst(1) + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "uristr")) { + pData->uristr = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "server")) { + pData->server = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "serverport")) { + pData->port = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "db")) { + pData->db = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "collection")) { + pData->collection_name = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "ssl_ca")) { + pData->ssl_ca = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "ssl_cert")) { + pData->ssl_cert = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "uid")) { + pData->uid = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "pwd")) { + pData->pwd = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (char*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "allowed_error_codes")) { + const int maxerrcodes = sizeof(pData->allowed_error_codes) / sizeof(uint32_t); + pData->allowed_error_codes_nbr = pvals[i].val.d.ar->nmemb; + if(pData->allowed_error_codes_nbr > maxerrcodes) { + parser_errmsg("ommongodb: %d allowed_error_codes given, but max " + "supported number is %d. Only the first %d error codes will " + "be accepted", pData->allowed_error_codes_nbr, maxerrcodes, maxerrcodes); + pData->allowed_error_codes_nbr = maxerrcodes; + } + for(int j = 0 ; j < pData->allowed_error_codes_nbr ; ++j) { + const char *const str = es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + assert(str != NULL); + pData->allowed_error_codes[j] = (unsigned)atoi(str); + free((void*)str); + } + } else { + dbgprintf("ommongodb: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + if(pData->tplName == NULL) { + CHKiRet(OMSRsetEntry(*ppOMSR, 0, NULL, OMSR_TPL_AS_MSG)); + } else { + CHKiRet(OMSRsetEntry(*ppOMSR, 0, ustrdup(pData->tplName), + OMSR_TPL_AS_JSON)); + CHKmalloc(pData->json_tokener = json_tokener_new()); + } + + if(pData->db == NULL) + CHKmalloc(pData->db = (char*)strdup("syslog")); + if(pData->collection_name == NULL) + CHKmalloc(pData->collection_name = (char*)strdup("log")); + + /* + * If we don't have a uristr, we need to build it + */ + dbgprintf("ommongodb: Checking the uristr.\n"); + if(pData->uristr == NULL){ + dbgprintf("ommongodb: No uristr, building one.\n"); + char* tmp = NULL; + if(pData->server == NULL) + CHKmalloc(pData->server = (char*)strdup("127.0.0.1")); + if(pData->port == NULL) + CHKmalloc(pData->port = (char*)strdup("27017")); + + /* We need to calculate the total length of the connection uri. + * We will let it readable and let gcc do the optimisation for us. + */ + size_t server = strlen(pData->server); + size_t port = strlen(pData->port); + size_t uid = 0; + size_t pwd = 0; + size_t uri_len = strlen("mongodb://") + server + port + 2; + if(pData->uid && pData->pwd){ + uid = strlen(pData->uid); + pwd = strlen(pData->pwd); + uri_len += uid + pwd + 2; + } + if(pData->ssl_ca && pData->ssl_cert) + uri_len += strlen("?ssl=true"); /* "?ssl=true" & "&ssl=true" are the same size */ + + /* + * Formatting string "by hand" is a lot faster on execution than a snprintf for example. + */ + CHKmalloc(pData->uristr = malloc(uri_len + 1)); + tmp = stpncpy(pData->uristr, "mongodb://", 11); + if(pData->uid && pData->pwd){ + dbgprintf("ommongodb: Adding uid & pwd to uristr.\n"); + tmp = stpncpy(tmp, pData->uid, uid); + *tmp = ':'; + ++tmp; + tmp = stpncpy(tmp, pData->pwd, pwd); + *tmp = '@'; + ++tmp; + } + dbgprintf("ommongodb: Adding server & port to uristr.\n"); + tmp = stpncpy(tmp, pData->server, server); + *tmp = ':'; + ++tmp; + tmp = stpncpy(tmp, pData->port, port); + *tmp = '/'; + ++tmp; + if(pData->ssl_ca && pData->ssl_cert){ + dbgprintf("ommongodb: Adding ssl to uristr.\n"); + if(pData->uid && pData->pwd) + tmp = stpncpy(tmp, "&ssl=true", 10); + else + tmp = stpncpy(tmp, "?ssl=true", 10); + } + *tmp = '\0'; + } + dbgprintf("ommongodb: The uristr: %s\n", pData->uristr); + dbgprintf("ommongodb: End of the configuration.\n"); + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit + objRelease(datetime, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +ENDqueryEtryPt + +BEGINmodInit() + rsRetVal localRet; + rsRetVal (*pomsrGetSupportedTplOpts)(unsigned long *pOpts); + unsigned long opts; + int bJSONPassingSupported; +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(datetime, CORE_COMPONENT)); + INITChkCoreFeature(bCoreSupportsBatching, CORE_FEATURE_BATCHING); + DBGPRINTF("ommongodb: module compiled with rsyslog version %s.\n", VERSION); + + /* check if the rsyslog core supports parameter passing code */ + bJSONPassingSupported = 0; + localRet = pHostQueryEtryPt((uchar*)"OMSRgetSupportedTplOpts", + &pomsrGetSupportedTplOpts); + if(localRet == RS_RET_OK) { + /* found entry point, so let's see if core supports msg passing */ + CHKiRet((*pomsrGetSupportedTplOpts)(&opts)); + if(opts & OMSR_TPL_AS_JSON) + bJSONPassingSupported = 1; + } else if(localRet != RS_RET_ENTRY_POINT_NOT_FOUND) { + ABORT_FINALIZE(localRet); /* Something else went wrong, not acceptable */ + } + if(!bJSONPassingSupported) { + DBGPRINTF("ommongodb: JSON-passing is not supported by rsyslog core, " + "can not continue.\n"); + ABORT_FINALIZE(RS_RET_NO_JSON_PASSING); + } +ENDmodInit diff --git a/plugins/ommysql/Makefile.am b/plugins/ommysql/Makefile.am new file mode 100644 index 0000000..7bec7e4 --- /dev/null +++ b/plugins/ommysql/Makefile.am @@ -0,0 +1,16 @@ +pkglib_LTLIBRARIES = ommysql.la + +# under RHEL 7, we have an issue when gnutls is linked. For some reason +# (autoconf magic?) we link ommysql against gnutls. I have not found the +# root cause, but setting LIBS= below makes the problem go away. A better +# solution would be appreciated, but for the time being this seems to +# solve the issue. +# more info: https://github.com/rsyslog/rsyslog/issues/408 +# rgerhards, 2015-07-08 +LIBS= +ommysql_la_SOURCES = ommysql.c +ommysql_la_CPPFLAGS = $(RSRT_CFLAGS) $(MYSQL_CFLAGS) $(PTHREADS_CFLAGS) +ommysql_la_LDFLAGS = -module -avoid-version +ommysql_la_LIBADD = $(MYSQL_LIBS) + +EXTRA_DIST = createDB.sql diff --git a/plugins/ommysql/Makefile.in b/plugins/ommysql/Makefile.in new file mode 100644 index 0000000..74496cc --- /dev/null +++ b/plugins/ommysql/Makefile.in @@ -0,0 +1,806 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +am__is_gnu_make = { \ + if test -z '$(MAKELEVEL)'; then \ + false; \ + elif test -n '$(MAKE_HOST)'; then \ + true; \ + elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \ + true; \ + else \ + false; \ + fi; \ +} +am__make_running_with_option = \ + case $${target_option-} in \ + ?) ;; \ + *) echo "am__make_running_with_option: internal error: invalid" \ + "target option '$${target_option-}' specified" >&2; \ + exit 1;; \ + esac; \ + has_opt=no; \ + sane_makeflags=$$MAKEFLAGS; \ + if $(am__is_gnu_make); then \ + sane_makeflags=$$MFLAGS; \ + else \ + case $$MAKEFLAGS in \ + *\\[\ \ ]*) \ + bs=\\; \ + sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \ + | sed "s/$$bs$$bs[$$bs $$bs ]*//g"`;; \ + esac; \ + fi; \ + skip_next=no; \ + strip_trailopt () \ + { \ + flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \ + }; \ + for flg in $$sane_makeflags; do \ + test $$skip_next = yes && { skip_next=no; continue; }; \ + case $$flg in \ + *=*|--*) continue;; \ + -*I) strip_trailopt 'I'; skip_next=yes;; \ + -*I?*) strip_trailopt 'I';; \ + -*O) strip_trailopt 'O'; skip_next=yes;; \ + -*O?*) strip_trailopt 'O';; \ + -*l) strip_trailopt 'l'; skip_next=yes;; \ + -*l?*) strip_trailopt 'l';; \ + -[dEDm]) skip_next=yes;; \ + -[JT]) skip_next=yes;; \ + esac; \ + case $$flg in \ + *$$target_option*) has_opt=yes; break;; \ + esac; \ + done; \ + test $$has_opt = yes +am__make_dryrun = (target_option=n; $(am__make_running_with_option)) +am__make_keepgoing = (target_option=k; $(am__make_running_with_option)) +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = plugins/ommysql +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/ac_check_define.m4 \ + $(top_srcdir)/m4/atomic_operations.m4 \ + $(top_srcdir)/m4/atomic_operations_64bit.m4 \ + $(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltoptions.m4 \ + $(top_srcdir)/m4/ltsugar.m4 $(top_srcdir)/m4/ltversion.m4 \ + $(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/configure.ac +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +DIST_COMMON = $(srcdir)/Makefile.am $(am__DIST_COMMON) +mkinstalldirs = $(install_sh) -d +CONFIG_HEADER = $(top_builddir)/config.h +CONFIG_CLEAN_FILES = +CONFIG_CLEAN_VPATH_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; +am__vpath_adj = case $$p in \ + $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ + *) f=$$p;; \ + esac; +am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`; +am__install_max = 40 +am__nobase_strip_setup = \ + srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'` +am__nobase_strip = \ + for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||" +am__nobase_list = $(am__nobase_strip_setup); \ + for p in $$list; do echo "$$p $$p"; done | \ + sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \ + $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \ + if (++n[$$2] == $(am__install_max)) \ + { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \ + END { for (dir in files) print dir, files[dir] }' +am__base_list = \ + sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \ + sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' +am__uninstall_files_from_dir = { \ + test -z "$$files" \ + || { test ! 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For some reason +# (autoconf magic?) we link ommysql against gnutls. I have not found the +# root cause, but setting LIBS= below makes the problem go away. A better +# solution would be appreciated, but for the time being this seems to +# solve the issue. +# more info: https://github.com/rsyslog/rsyslog/issues/408 +# rgerhards, 2015-07-08 +LIBS = +LIBSYSTEMD_CFLAGS = @LIBSYSTEMD_CFLAGS@ +LIBSYSTEMD_JOURNAL_CFLAGS = @LIBSYSTEMD_JOURNAL_CFLAGS@ +LIBSYSTEMD_JOURNAL_LIBS = @LIBSYSTEMD_JOURNAL_LIBS@ +LIBSYSTEMD_LIBS = @LIBSYSTEMD_LIBS@ +LIBTOOL = @LIBTOOL@ +LIBUUID_CFLAGS = @LIBUUID_CFLAGS@ +LIBUUID_LIBS = @LIBUUID_LIBS@ +LIPO = @LIPO@ +LN_S = @LN_S@ +LTLIBOBJS = @LTLIBOBJS@ +LT_SYS_LIBRARY_PATH = @LT_SYS_LIBRARY_PATH@ +MAKEINFO = @MAKEINFO@ +MANIFEST_TOOL = @MANIFEST_TOOL@ +MKDIR_P = @MKDIR_P@ +MYSQL_CFLAGS = @MYSQL_CFLAGS@ +MYSQL_CONFIG = @MYSQL_CONFIG@ +MYSQL_LIBS = @MYSQL_LIBS@ +NM = @NM@ +NMEDIT = @NMEDIT@ +OBJDUMP = @OBJDUMP@ +OBJEXT = @OBJEXT@ +OPENSSL_CFLAGS = @OPENSSL_CFLAGS@ +OPENSSL_LIBS = @OPENSSL_LIBS@ +OTOOL = @OTOOL@ +OTOOL64 = @OTOOL64@ +PACKAGE = @PACKAGE@ +PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@ +PACKAGE_NAME = @PACKAGE_NAME@ +PACKAGE_STRING = @PACKAGE_STRING@ +PACKAGE_TARNAME = @PACKAGE_TARNAME@ +PACKAGE_URL = @PACKAGE_URL@ +PACKAGE_VERSION = @PACKAGE_VERSION@ +PATH_SEPARATOR = @PATH_SEPARATOR@ +PGSQL_CFLAGS = @PGSQL_CFLAGS@ +PGSQL_LIBS = @PGSQL_LIBS@ +PG_CONFIG = @PG_CONFIG@ +PID_FILE_PATH = @PID_FILE_PATH@ +PKG_CONFIG = @PKG_CONFIG@ +PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@ +PKG_CONFIG_PATH = @PKG_CONFIG_PATH@ +PROTON_CFLAGS = @PROTON_CFLAGS@ +PROTON_LIBS = @PROTON_LIBS@ +PROTON_PROACTOR_CFLAGS = @PROTON_PROACTOR_CFLAGS@ +PROTON_PROACTOR_LIBS = @PROTON_PROACTOR_LIBS@ +PTHREADS_CFLAGS = @PTHREADS_CFLAGS@ +PTHREADS_LIBS = @PTHREADS_LIBS@ +PYTHON = @PYTHON@ +PYTHON_EXEC_PREFIX = @PYTHON_EXEC_PREFIX@ +PYTHON_PLATFORM = @PYTHON_PLATFORM@ +PYTHON_PREFIX = @PYTHON_PREFIX@ +PYTHON_VERSION = @PYTHON_VERSION@ +RABBITMQ_CFLAGS = @RABBITMQ_CFLAGS@ +RABBITMQ_LIBS = @RABBITMQ_LIBS@ +RANLIB = @RANLIB@ +READLINK = @READLINK@ +REDIS = @REDIS@ +RELP_CFLAGS = @RELP_CFLAGS@ +RELP_LIBS = @RELP_LIBS@ +RSRT_CFLAGS = @RSRT_CFLAGS@ +RSRT_CFLAGS1 = @RSRT_CFLAGS1@ +RSRT_LIBS = @RSRT_LIBS@ +RSRT_LIBS1 = @RSRT_LIBS1@ +RST2MAN = @RST2MAN@ +RT_LIBS = @RT_LIBS@ +SED = @SED@ +SET_MAKE = @SET_MAKE@ +SHELL = @SHELL@ +SNMP_CFLAGS = @SNMP_CFLAGS@ +SNMP_LIBS = @SNMP_LIBS@ +SOL_LIBS = @SOL_LIBS@ +STRIP = @STRIP@ +TCL_BIN_DIR = @TCL_BIN_DIR@ +TCL_INCLUDE_SPEC = @TCL_INCLUDE_SPEC@ +TCL_LIB_FILE = @TCL_LIB_FILE@ +TCL_LIB_FLAG = @TCL_LIB_FLAG@ +TCL_LIB_SPEC = @TCL_LIB_SPEC@ +TCL_PATCH_LEVEL = @TCL_PATCH_LEVEL@ +TCL_SRC_DIR = @TCL_SRC_DIR@ +TCL_STUB_LIB_FILE = @TCL_STUB_LIB_FILE@ +TCL_STUB_LIB_FLAG = @TCL_STUB_LIB_FLAG@ +TCL_STUB_LIB_SPEC = @TCL_STUB_LIB_SPEC@ +TCL_VERSION = @TCL_VERSION@ +UDPSPOOF_CFLAGS = @UDPSPOOF_CFLAGS@ +UDPSPOOF_LIBS = @UDPSPOOF_LIBS@ +VALGRIND = @VALGRIND@ +VERSION = @VERSION@ +WARN_CFLAGS = @WARN_CFLAGS@ +WARN_LDFLAGS = @WARN_LDFLAGS@ +WARN_SCANNERFLAGS = @WARN_SCANNERFLAGS@ +WGET = @WGET@ +YACC = @YACC@ +YACC_FOUND = @YACC_FOUND@ +YFLAGS = @YFLAGS@ +ZLIB_CFLAGS = @ZLIB_CFLAGS@ +ZLIB_LIBS = @ZLIB_LIBS@ +ZSTD_CFLAGS = @ZSTD_CFLAGS@ +ZSTD_LIBS = @ZSTD_LIBS@ +abs_builddir = @abs_builddir@ +abs_srcdir = @abs_srcdir@ +abs_top_builddir = @abs_top_builddir@ +abs_top_srcdir = @abs_top_srcdir@ +ac_ct_AR = @ac_ct_AR@ +ac_ct_CC = @ac_ct_CC@ +ac_ct_DUMPBIN = @ac_ct_DUMPBIN@ +am__include = @am__include@ +am__leading_dot = @am__leading_dot@ +am__quote = @am__quote@ +am__tar = @am__tar@ +am__untar = @am__untar@ +bindir = @bindir@ +build = @build@ +build_alias = @build_alias@ +build_cpu = @build_cpu@ +build_os = @build_os@ +build_vendor = @build_vendor@ +builddir = @builddir@ +datadir = @datadir@ +datarootdir = @datarootdir@ +docdir = @docdir@ +dvidir = @dvidir@ +exec_prefix = @exec_prefix@ +host = @host@ +host_alias = @host_alias@ +host_cpu = @host_cpu@ +host_os = @host_os@ +host_vendor = @host_vendor@ +htmldir = @htmldir@ +includedir = @includedir@ +infodir = @infodir@ +install_sh = @install_sh@ +libdir = @libdir@ +libexecdir = @libexecdir@ +localedir = @localedir@ +localstatedir = @localstatedir@ +mandir = @mandir@ +mkdir_p = @mkdir_p@ +moddirs = @moddirs@ +oldincludedir = @oldincludedir@ +pdfdir = @pdfdir@ +pkgpyexecdir = @pkgpyexecdir@ +pkgpythondir = @pkgpythondir@ +prefix = @prefix@ +program_transform_name = @program_transform_name@ +psdir = @psdir@ +pyexecdir = @pyexecdir@ +pythondir = @pythondir@ +runstatedir = @runstatedir@ +sbindir = @sbindir@ +sharedstatedir = @sharedstatedir@ +srcdir = @srcdir@ +sysconfdir = @sysconfdir@ +target_alias = @target_alias@ +top_build_prefix = @top_build_prefix@ +top_builddir = @top_builddir@ +top_srcdir = @top_srcdir@ +pkglib_LTLIBRARIES = ommysql.la +ommysql_la_SOURCES = ommysql.c +ommysql_la_CPPFLAGS = $(RSRT_CFLAGS) $(MYSQL_CFLAGS) $(PTHREADS_CFLAGS) +ommysql_la_LDFLAGS = -module -avoid-version +ommysql_la_LIBADD = $(MYSQL_LIBS) +EXTRA_DIST = createDB.sql +all: all-am + +.SUFFIXES: +.SUFFIXES: .c .lo .o .obj +$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps) + @for dep in $?; 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\ + else \ + $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \ + install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \ + "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \ + fi +mostlyclean-generic: + +clean-generic: + +distclean-generic: + -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES) + -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES) + +maintainer-clean-generic: + @echo "This command is intended for maintainers to use" + @echo "it deletes files that may require special tools to rebuild." +clean: clean-am + +clean-am: clean-generic clean-libtool clean-pkglibLTLIBRARIES \ + mostlyclean-am + +distclean: distclean-am + -rm -f ./$(DEPDIR)/ommysql_la-ommysql.Plo + -rm -f Makefile +distclean-am: clean-am distclean-compile distclean-generic \ + distclean-tags + +dvi: dvi-am + +dvi-am: + +html: html-am + +html-am: + +info: info-am + +info-am: + +install-data-am: + +install-dvi: install-dvi-am + +install-dvi-am: + +install-exec-am: install-pkglibLTLIBRARIES + +install-html: install-html-am + +install-html-am: + +install-info: install-info-am + +install-info-am: + +install-man: + +install-pdf: install-pdf-am + +install-pdf-am: + +install-ps: install-ps-am + +install-ps-am: + +installcheck-am: + +maintainer-clean: maintainer-clean-am + -rm -f ./$(DEPDIR)/ommysql_la-ommysql.Plo + -rm -f Makefile +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-pkglibLTLIBRARIES + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \ + clean-generic clean-libtool clean-pkglibLTLIBRARIES \ + cscopelist-am ctags ctags-am distclean distclean-compile \ + distclean-generic distclean-libtool distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/ommysql/createDB.sql b/plugins/ommysql/createDB.sql new file mode 100644 index 0000000..6261284 --- /dev/null +++ b/plugins/ommysql/createDB.sql @@ -0,0 +1,37 @@ +CREATE DATABASE Syslog; +USE Syslog; +CREATE TABLE SystemEvents +( + ID int unsigned not null auto_increment primary key, + CustomerID bigint, + ReceivedAt datetime NULL, + DeviceReportedTime datetime NULL, + Facility smallint NULL, + Priority smallint NULL, + FromHost varchar(63) NULL, + Message text, + NTSeverity int NULL, + Importance int NULL, + EventSource varchar(60), + EventUser varchar(60) NULL, + EventCategory int NULL, + EventID int NULL, + EventBinaryData text NULL, + MaxAvailable int NULL, + CurrUsage int NULL, + MinUsage int NULL, + MaxUsage int NULL, + InfoUnitID int NULL , + SysLogTag varchar(60), + EventLogType varchar(60), + GenericFileName VarChar(60), + SystemID int NULL +); + +CREATE TABLE SystemEventsProperties +( + ID int unsigned not null auto_increment primary key, + SystemEventID int NULL , + ParamName varchar(255) NULL , + ParamValue text NULL +); diff --git a/plugins/ommysql/ommysql.c b/plugins/ommysql/ommysql.c new file mode 100644 index 0000000..37434e3 --- /dev/null +++ b/plugins/ommysql/ommysql.c @@ -0,0 +1,599 @@ +/* ommysql.c + * This is the implementation of the build-in output module for MySQL. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * File begun on 2007-07-20 by RGerhards (extracted from syslogd.c) + * + * Copyright 2007-2021 Adiscon GmbH. + * + * This file is part of rsyslog. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <time.h> +#include <netdb.h> +#include <mysql.h> +#include <mysqld_error.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "cfsysline.h" +#include "parserif.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("ommysql") + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +typedef struct _instanceData { + char dbsrv[MAXHOSTNAMELEN+1]; /* IP or hostname of DB server*/ + unsigned int dbsrvPort; /* port of MySQL server */ + char dbname[_DB_MAXDBLEN+1]; /* DB name */ + char dbuid[_DB_MAXUNAMELEN+1]; /* DB user */ + char dbpwd[_DB_MAXPWDLEN+1]; /* DB user's password */ + uchar *configfile; /* MySQL Client Configuration File */ + uchar *configsection; /* MySQL Client Configuration Section */ + uchar *tplName; /* format template to use */ + uchar *socket; /* MySQL socket path */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + MYSQL *hmysql; /* handle to MySQL */ + unsigned uLastMySQLErrno; /* last errno returned by MySQL or 0 if all is well */ +} wrkrInstanceData_t; + +typedef struct configSettings_s { + int iSrvPort; /* database server port */ + uchar *pszMySQLConfigFile; /* MySQL Client Configuration File */ + uchar *pszMySQLConfigSection; /* MySQL Client Configuration Section */ +} configSettings_t; +static configSettings_t cs; + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "server", eCmdHdlrGetWord, 1 }, + { "db", eCmdHdlrGetWord, 1 }, + { "uid", eCmdHdlrGetWord, 1 }, + { "pwd", eCmdHdlrGetWord, 1 }, + { "serverport", eCmdHdlrInt, 0 }, + { "mysqlconfig.file", eCmdHdlrGetWord, 0 }, + { "mysqlconfig.section", eCmdHdlrGetWord, 0 }, + { "template", eCmdHdlrGetWord, 0 }, + { "socket", eCmdHdlrGetWord, 0 }, +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +/* we need to synchronize access to the mysql handle, because multiple threads + * use it and we may need to (re)init it during processing. This could lead to + * races with potentially wrong addresses or NULL accesses. + */ +pthread_rwlock_t rwlock_hmysql; + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + resetConfigVariables(NULL, NULL); +ENDinitConfVars + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pthread_rwlock_wrlock(&rwlock_hmysql); + pWrkrData->hmysql = NULL; + pthread_rwlock_unlock(&rwlock_hmysql); +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +/* The following function is responsible for closing a + * MySQL connection. + * Initially added 2004-10-28 + */ +static void closeMySQL(wrkrInstanceData_t *pWrkrData) +{ + pthread_rwlock_unlock(&rwlock_hmysql); + pthread_rwlock_wrlock(&rwlock_hmysql); + if(pWrkrData->hmysql != NULL) { /* just to be on the safe side... */ + mysql_close(pWrkrData->hmysql); + pWrkrData->hmysql = NULL; + } + pthread_rwlock_unlock(&rwlock_hmysql); + pthread_rwlock_rdlock(&rwlock_hmysql); +} + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->configfile); + free(pData->configsection); + free(pData->tplName); + free(pData->socket); +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + pthread_rwlock_rdlock(&rwlock_hmysql); + closeMySQL(pWrkrData); + mysql_thread_end(); + pthread_rwlock_unlock(&rwlock_hmysql); +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + /* nothing special here */ +ENDdbgPrintInstInfo + + +/* log a database error with descriptive message. + * We check if we have a valid MySQL handle. If not, we simply + * report an error, but can not be specific. RGerhards, 2007-01-30 + */ +static void reportDBError(wrkrInstanceData_t *pWrkrData, int bSilent) +{ + char errMsg[512]; + unsigned uMySQLErrno; + + /* output log message */ + errno = 0; + if(pWrkrData->hmysql == NULL) { + LogError(0, NO_ERRCODE, "ommysql: unknown DB error occurred - could not obtain MySQL handle"); + } else { /* we can ask mysql for the error description... */ + uMySQLErrno = mysql_errno(pWrkrData->hmysql); + snprintf(errMsg, sizeof(errMsg), "db error (%u): %s\n", uMySQLErrno, + mysql_error(pWrkrData->hmysql)); + if(bSilent || uMySQLErrno == pWrkrData->uLastMySQLErrno) + dbgprintf("mysql, DBError(silent): %s\n", errMsg); + else { + pWrkrData->uLastMySQLErrno = uMySQLErrno; + LogError(0, NO_ERRCODE, "ommysql: %s", errMsg); + } + } + + return; +} + + +/* The following function is responsible for initializing a + * MySQL connection. + * Initially added 2004-10-28 mmeckelein + */ +static rsRetVal initMySQL(wrkrInstanceData_t *pWrkrData, int bSilent) +{ + instanceData *pData; + DEFiRet; + + assert(pWrkrData->hmysql == NULL); + pData = pWrkrData->pData; + + pthread_rwlock_unlock(&rwlock_hmysql); + pthread_rwlock_wrlock(&rwlock_hmysql); + + pWrkrData->hmysql = mysql_init(NULL); + if(pWrkrData->hmysql == NULL) { + LogError(0, RS_RET_SUSPENDED, "can not initialize MySQL handle"); + iRet = RS_RET_SUSPENDED; + } else { /* we could get the handle, now on with work... */ + mysql_options(pWrkrData->hmysql,MYSQL_READ_DEFAULT_GROUP, + ((pData->configsection!=NULL)?(char*)pData->configsection:"client")); + if(pData->configfile!=NULL){ + FILE * fp; + fp=fopen((char*)pData->configfile,"r"); + int err=errno; + if(fp==NULL){ + char msg[512]; + snprintf(msg,sizeof(msg),"Could not open '%s' for reading",pData->configfile); + if(bSilent) { + char errStr[512]; + rs_strerror_r(err, errStr, sizeof(errStr)); + dbgprintf("mysql configuration error(%d): %s - %s\n",err,msg,errStr); + } else + LogError(err,NO_ERRCODE,"mysql configuration error: %s\n",msg); + } else { + fclose(fp); + mysql_options(pWrkrData->hmysql,MYSQL_READ_DEFAULT_FILE,pData->configfile); + } + } + /* Connect to database */ + if(mysql_real_connect(pWrkrData->hmysql, pData->dbsrv, pData->dbuid, + pData->dbpwd, pData->dbname, pData->dbsrvPort, + (const char *)pData->socket, 0) == NULL) { + reportDBError(pWrkrData, bSilent); + closeMySQL(pWrkrData); /* ignore any error we may get */ + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + if(mysql_autocommit(pWrkrData->hmysql, 0)) { + LogMsg(0, NO_ERRCODE, LOG_WARNING, "ommysql: activating autocommit failed, " + "some data may be duplicated\n"); + reportDBError(pWrkrData, 0); + } + } + +finalize_it: + pthread_rwlock_unlock(&rwlock_hmysql); + pthread_rwlock_rdlock(&rwlock_hmysql); + RETiRet; +} + + +/* The following function writes the current log entry + * to an established MySQL session. + * Initially added 2004-10-28 mmeckelein + */ +static rsRetVal writeMySQL(wrkrInstanceData_t *pWrkrData, const uchar *const psz) +{ + DEFiRet; + + /* see if we are ready to proceed */ + if(pWrkrData->hmysql == NULL) { + CHKiRet(initMySQL(pWrkrData, 0)); + } + + /* try insert */ + if(mysql_query(pWrkrData->hmysql, (char*)psz)) { + const int mysql_err = mysql_errno(pWrkrData->hmysql); + /* We assume server error codes are non-recoverable, mainly data errors. + * This also means we need to differentiate between client and server error + * codes. Unfortunately, the API does not provide a specified function for + * this. Howerver, error codes 2000..2999 are currently client error codes. + * So we use this as guideline. + */ + if(mysql_err < 2000 || mysql_err > 2999) { + reportDBError(pWrkrData, 0); + LogError(0, RS_RET_DATAFAIL, "The error statement was: %s", psz); + ABORT_FINALIZE(RS_RET_DATAFAIL); + } + /* potentially recoverable error occurred, try to re-init connection and retry */ + closeMySQL(pWrkrData); /* close the current handle */ + CHKiRet(initMySQL(pWrkrData, 0)); /* try to re-open */ + if(mysql_query(pWrkrData->hmysql, (char*)psz)) { /* re-try insert */ + /* we failed, giving up for now */ + DBGPRINTF("ommysql: suspending due to failed write of '%s'\n", psz); + reportDBError(pWrkrData, 0); + closeMySQL(pWrkrData); /* free ressources */ + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + } + +finalize_it: + if(iRet == RS_RET_OK) { + pWrkrData->uLastMySQLErrno = 0; /* reset error for error supression */ + } + + RETiRet; +} + + +BEGINtryResume +CODESTARTtryResume + pthread_rwlock_rdlock(&rwlock_hmysql); + if(pWrkrData->hmysql == NULL) { + iRet = initMySQL(pWrkrData, 1); + } + pthread_rwlock_unlock(&rwlock_hmysql); +ENDtryResume + +BEGINbeginTransaction +CODESTARTbeginTransaction + // NOTHING TO DO IN HERE +ENDbeginTransaction + +BEGINcommitTransaction +CODESTARTcommitTransaction + DBGPRINTF("ommysql: commitTransaction\n"); + pthread_rwlock_rdlock(&rwlock_hmysql); + CHKiRet(writeMySQL(pWrkrData, (uchar*)"START TRANSACTION")); + + for(unsigned i = 0 ; i < nParams ; ++i) { + iRet = writeMySQL(pWrkrData, actParam(pParams, 1, i, 0).param); + if(iRet != RS_RET_OK + && iRet != RS_RET_DEFER_COMMIT + && iRet != RS_RET_PREVIOUS_COMMITTED) { + if(pWrkrData->hmysql == NULL) { + DBGPRINTF("ommysql: server error: hmysql is closed, transaction rollback " + "willl not be tried (it probably already happened)\n"); + } else { + if(mysql_rollback(pWrkrData->hmysql) != 0) { + DBGPRINTF("ommysql: server error: transaction could not be rolled back\n"); + } + closeMySQL(pWrkrData); + } + FINALIZE; + } + } + + if(mysql_commit(pWrkrData->hmysql) != 0) { + DBGPRINTF("ommysql: server error: transaction not committed\n"); + reportDBError(pWrkrData, 0); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + DBGPRINTF("ommysql: transaction committed\n"); +finalize_it: + pthread_rwlock_unlock(&rwlock_hmysql); +ENDcommitTransaction + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->dbsrvPort = 0; + pData->configfile = NULL; + pData->configsection = NULL; + pData->tplName = NULL; + pData->socket = NULL; +} + + +/* note: we use the fixed-size buffers inside the config object to avoid + * changing too much of the previous plumbing. rgerhards, 2012-02-02 + */ +BEGINnewActInst + struct cnfparamvals *pvals; + int i; + char *cstr; + size_t len; +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + CODE_STD_STRING_REQUESTparseSelectorAct(1) + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "server")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + len = es_strlen(pvals[i].val.d.estr); + if(len >= sizeof(pData->dbsrv)-1) { + parser_errmsg("ommysql: dbname parameter longer than supported " + "maximum of %d characters", (int)sizeof(pData->dbsrv)-1); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + memcpy(pData->dbsrv, cstr, len+1); + free(cstr); + } else if(!strcmp(actpblk.descr[i].name, "serverport")) { + pData->dbsrvPort = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "db")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + len = es_strlen(pvals[i].val.d.estr); + if(len >= sizeof(pData->dbname)-1) { + parser_errmsg("ommysql: dbname parameter longer than supported " + "maximum of %d characters", (int)sizeof(pData->dbname)-1); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + memcpy(pData->dbname, cstr, len+1); + free(cstr); + } else if(!strcmp(actpblk.descr[i].name, "uid")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + len = es_strlen(pvals[i].val.d.estr); + if(len >= sizeof(pData->dbuid)-1) { + parser_errmsg("ommysql: uid parameter longer than supported " + "maximum of %d characters", (int)sizeof(pData->dbuid)-1); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + memcpy(pData->dbuid, cstr, len+1); + free(cstr); + } else if(!strcmp(actpblk.descr[i].name, "pwd")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + len = es_strlen(pvals[i].val.d.estr); + if(len >= sizeof(pData->dbpwd)-1) { + parser_errmsg("ommysql: pwd parameter longer than supported " + "maximum of %d characters", (int)sizeof(pData->dbpwd)-1); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + memcpy(pData->dbpwd, cstr, len+1); + free(cstr); + } else if(!strcmp(actpblk.descr[i].name, "mysqlconfig.file")) { + pData->configfile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "mysqlconfig.section")) { + pData->configsection = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "socket")) { + pData->socket = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("ommysql: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + if(pData->tplName == NULL) { + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*) strdup(" StdDBFmt"), + OMSR_RQD_TPL_OPT_SQL)); + } else { + CHKiRet(OMSRsetEntry(*ppOMSR, 0, + (uchar*) strdup((char*) pData->tplName), + OMSR_RQD_TPL_OPT_SQL)); + } +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINparseSelectorAct + int iMySQLPropErr = 0; +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* first check if this config line is actually for us + * The first test [*p == '>'] can be skipped if a module shall only + * support the newer slection syntax [:modname:]. This is in fact + * recommended for new modules. Please note that over time this part + * will be handled by rsyslogd itself, but for the time being it is + * a good compromise to do it at the module level. + * rgerhards, 2007-10-15 + */ + if(*p == '>') { + p++; /* eat '>' '*/ + } else if(!strncmp((char*) p, ":ommysql:", sizeof(":ommysql:") - 1)) { + p += sizeof(":ommysql:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + } else { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + CHKiRet(createInstance(&pData)); + + /* rger 2004-10-28: added support for MySQL + * >server,dbname,userid,password + * Now we read the MySQL connection properties + * and verify that the properties are valid. + */ + if(getSubString(&p, pData->dbsrv, MAXHOSTNAMELEN+1, ',')) + iMySQLPropErr++; + if(*pData->dbsrv == '\0') + iMySQLPropErr++; + if(getSubString(&p, pData->dbname, _DB_MAXDBLEN+1, ',')) + iMySQLPropErr++; + if(*pData->dbname == '\0') + iMySQLPropErr++; + if(getSubString(&p, pData->dbuid, _DB_MAXUNAMELEN+1, ',')) + iMySQLPropErr++; + if(*pData->dbuid == '\0') + iMySQLPropErr++; + if(getSubString(&p, pData->dbpwd, _DB_MAXPWDLEN+1, ';')) + iMySQLPropErr++; + /* now check for template + * We specify that the SQL option must be present in the template. + * This is for your own protection (prevent sql injection). + */ + if(*(p-1) == ';') + --p; /* TODO: the whole parsing of the MySQL module needs to be re-thought - but this here + * is clean enough for the time being -- rgerhards, 2007-07-30 + */ + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_RQD_TPL_OPT_SQL, (uchar*) " StdDBFmt")); + + /* If we detect invalid properties, we disable logging, + * because right properties are vital at this place. + * Retries make no sense. + */ + if (iMySQLPropErr) { + LogError(0, RS_RET_INVALID_PARAMS, "Trouble with MySQL connection properties. " + "-MySQL logging disabled"); + ABORT_FINALIZE(RS_RET_INVALID_PARAMS); + } else { + pData->dbsrvPort = (unsigned) cs.iSrvPort; /* set configured port */ + pData->configfile = cs.pszMySQLConfigFile; + pData->configsection = cs.pszMySQLConfigSection; + pData->socket = NULL; + } + +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit + pthread_rwlock_destroy(&rwlock_hmysql); +# ifdef HAVE_MYSQL_LIBRARY_INIT + mysql_library_end(); +# else + mysql_server_end(); +# endif +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMODTX_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +ENDqueryEtryPt + + +/* Reset config variables for this module to default values. + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + cs.iSrvPort = 0; /* zero is the default port */ + free(cs.pszMySQLConfigFile); + cs.pszMySQLConfigFile = NULL; + free(cs.pszMySQLConfigSection); + cs.pszMySQLConfigSection = NULL; + RETiRet; +} + +BEGINmodInit() +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + INITChkCoreFeature(bCoreSupportsBatching, CORE_FEATURE_BATCHING); + if(!bCoreSupportsBatching) { + LogError(0, NO_ERRCODE, "ommysql: rsyslog core too old"); + ABORT_FINALIZE(RS_RET_ERR); + } + + /* we need to init the MySQL library. If that fails, we cannot run */ + if( +# ifdef HAVE_MYSQL_LIBRARY_INIT + mysql_library_init(0, NULL, NULL) +# else + mysql_server_init(0, NULL, NULL) +# endif + ) { + LogError(0, NO_ERRCODE, "ommysql: initializing mysql client failed, plugin " + "can not run"); + ABORT_FINALIZE(RS_RET_ERR); + } + + pthread_rwlock_init(&rwlock_hmysql, NULL); + + /* register our config handlers */ + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionommysqlserverport", 0, eCmdHdlrInt, NULL, &cs.iSrvPort, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"ommysqlconfigfile",0,eCmdHdlrGetWord,NULL,&cs.pszMySQLConfigFile, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"ommysqlconfigsection",0,eCmdHdlrGetWord,NULL,&cs.pszMySQLConfigSection, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit diff --git a/plugins/ompgsql/Makefile.am b/plugins/ompgsql/Makefile.am new file mode 100644 index 0000000..b777f38 --- /dev/null +++ b/plugins/ompgsql/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = ompgsql.la + +ompgsql_la_SOURCES = ompgsql.c +ompgsql_la_CPPFLAGS = -I$(top_srcdir) $(PGSQL_CFLAGS) $(RSRT_CFLAGS) +ompgsql_la_LDFLAGS = -module -avoid-version +ompgsql_la_LIBADD = $(PGSQL_LIBS) + +EXTRA_DIST = createDB.sql diff --git a/plugins/ompgsql/Makefile.in b/plugins/ompgsql/Makefile.in new file mode 100644 index 0000000..3c702fb --- /dev/null +++ b/plugins/ompgsql/Makefile.in @@ -0,0 +1,798 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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NULL, + FromHost varchar(63) NULL, + Message text, + NTSeverity int NULL, + Importance int NULL, + EventSource varchar(60), + EventUser varchar(60) NULL, + EventCategory int NULL, + EventID int NULL, + EventBinaryData text NULL, + MaxAvailable int NULL, + CurrUsage int NULL, + MinUsage int NULL, + MaxUsage int NULL, + InfoUnitID int NULL , + SysLogTag varchar(60), + EventLogType varchar(60), + GenericFileName VarChar(60), + SystemID int NULL +); + +CREATE TABLE SystemEventsProperties +( + ID serial not null primary key, + SystemEventID int NULL , + ParamName varchar(255) NULL , + ParamValue text NULL +); diff --git a/plugins/ompgsql/ompgsql.c b/plugins/ompgsql/ompgsql.c new file mode 100644 index 0000000..27248ff --- /dev/null +++ b/plugins/ompgsql/ompgsql.c @@ -0,0 +1,580 @@ +/* ompgsql.c + * This is the implementation of the build-in output module for PgSQL. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * File begun on 2007-10-18 by sur5r (converted from ommysql.c) + * + * Copyright 2007-2018 Rainer Gerhards and Adiscon GmbH. + * + * The following link my be useful for the not-so-postgres literate + * when setting up a test environment (on Fedora): + * http://www.jboss.org/community/wiki/InstallPostgreSQLonFedora + * + * This file is part of rsyslog. + * + * Rsyslog is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Rsyslog is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Rsyslog. If not, see <http://www.gnu.org/licenses/>. + * + * A copy of the GPL can be found in the file "COPYING" in this distribution. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <time.h> +#include <netdb.h> +#include <libpq-fe.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("ompgsql") + + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +typedef struct _instanceData { + char srv[MAXHOSTNAMELEN+1]; /* IP or hostname of DB server*/ + char dbname[_DB_MAXDBLEN+1]; /* DB name */ + char user[_DB_MAXUNAMELEN+1]; /* DB user */ + char pass[_DB_MAXPWDLEN+1]; /* DB user's password */ + char conninfo[_DB_MAXCONNINFOLEN+1]; /* Connection parameters or URI */ + unsigned int trans_age; + unsigned int trans_commit; + unsigned short multi_row; + int port; + uchar *tpl; /* format template to use */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + PGconn *f_hpgsql; /* handle to PgSQL */ + ConnStatusType eLastPgSQLStatus; /* last status from postgres */ +} wrkrInstanceData_t; + +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "server", eCmdHdlrGetWord, 0 }, + { "db", eCmdHdlrGetWord, 0 }, + { "user", eCmdHdlrGetWord, 0 }, + { "uid", eCmdHdlrGetWord, 0 }, + { "pass", eCmdHdlrGetWord, 0 }, + { "pwd", eCmdHdlrGetWord, 0 }, + { "multirows", eCmdHdlrInt, 0 }, + { "trans_size", eCmdHdlrInt, 0 }, + { "trans_age", eCmdHdlrInt, 0 }, + { "serverport", eCmdHdlrInt, 0 }, + { "port", eCmdHdlrInt, 0 }, + { "template", eCmdHdlrGetWord, 0 }, + { "conninfo", eCmdHdlrGetWord, 0 } +}; + + +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars +ENDinitConfVars + + +static rsRetVal writePgSQL(uchar *psz, wrkrInstanceData_t *pData); + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pWrkrData->f_hpgsql = NULL; +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if (eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +/* The following function is responsible for closing a + * PgSQL connection. + */ +static void closePgSQL(wrkrInstanceData_t *pWrkrData) +{ + assert(pWrkrData != NULL); + + if (pWrkrData->f_hpgsql != NULL) { /* just to be on the safe side... */ + PQfinish(pWrkrData->f_hpgsql); + pWrkrData->f_hpgsql = NULL; + } +} + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->tpl); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + closePgSQL(pWrkrData); +ENDfreeWrkrInstance + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + /* nothing special here */ +ENDdbgPrintInstInfo + + +/* log a database error with descriptive message. + * We check if we have a valid handle. If not, we simply + * report an error, but can not be specific. RGerhards, 2007-01-30 + */ +static void reportDBError(wrkrInstanceData_t *pWrkrData, int bSilent) +{ + char errMsg[512]; + ConnStatusType ePgSQLStatus; + + assert(pWrkrData != NULL); + bSilent = 0; + + /* output log message */ + errno = 0; + if (pWrkrData->f_hpgsql == NULL) { + LogError(0, NO_ERRCODE, "unknown DB error occurred - could not obtain PgSQL handle"); + } else { /* we can ask pgsql for the error description... */ + ePgSQLStatus = PQstatus(pWrkrData->f_hpgsql); + snprintf(errMsg, sizeof(errMsg), "db error (%d): %s\n", ePgSQLStatus, + PQerrorMessage(pWrkrData->f_hpgsql)); + if (bSilent || ePgSQLStatus == pWrkrData->eLastPgSQLStatus) + dbgprintf("pgsql, DBError(silent): %s\n", errMsg); + else { + pWrkrData->eLastPgSQLStatus = ePgSQLStatus; + LogError(0, NO_ERRCODE, "%s", errMsg); + } + } + + return; +} + + +/* The following function is responsible for initializing a + * PgSQL connection. + */ +static rsRetVal initPgSQL(wrkrInstanceData_t *pWrkrData, int bSilent) +{ + int sslStatus; + instanceData *pData; + DEFiRet; + + pData = pWrkrData->pData; + assert(pData != NULL); + assert(pWrkrData->f_hpgsql == NULL); + + if (strlen(pData->conninfo) > 0) { + /* Don't log the whole connection string, because it contains the DB password */ + dbgprintf("initPgSQL: using connection string provided by conninfo\n"); + pWrkrData->f_hpgsql = PQconnectdb(pData->conninfo); + } else { + dbgprintf("initPgSQL: host=%s port=%d dbname=%s uid=%s\n", pData->srv, pData->port, + pData->dbname, pData->user); + + /* Force PostgreSQL to use ANSI-SQL conforming strings, otherwise we may + * get all sorts of side effects (e.g.: backslash escapes) and warnings + * + * Note: PostgreSQL versions since 9.3 have this already on by default. + */ + const char *PgConnectionOptions = "-c standard_conforming_strings=on"; + + /* Connect to database */ + char port[6]; + snprintf(port, sizeof(port), "%d", pData->port); + + pWrkrData->f_hpgsql = PQsetdbLogin(pData->srv, port, PgConnectionOptions, NULL, + pData->dbname, pData->user, pData->pass); + } + + if (pWrkrData->f_hpgsql == NULL) { + reportDBError(pWrkrData, bSilent); + closePgSQL(pWrkrData); /* ignore any error we may get */ + iRet = RS_RET_SUSPENDED; + } + +#ifdef HAVE_PGSSLINUSE + sslStatus = PQsslInUse(pWrkrData->f_hpgsql); +#else + sslStatus = PQgetssl(pWrkrData->f_hpgsql) == NULL ? 0 : 1; +#endif + dbgprintf("initPgSQL: ssl status: %d\n", sslStatus); + + RETiRet; +} + + +/* try the insert into postgres and return if that failed or not + * (1 = had error, 0=ok). We do not use the standard IRET calling convention + * rgerhards, 2009-04-17 + */ +static int +tryExec(uchar *pszCmd, wrkrInstanceData_t *pWrkrData) +{ + PGresult *pgRet; + ExecStatusType execState; + int bHadError = 0; + + /* try insert */ + pgRet = PQexec(pWrkrData->f_hpgsql, (char*)pszCmd); + execState = PQresultStatus(pgRet); + if (execState != PGRES_COMMAND_OK && execState != PGRES_TUPLES_OK) { + dbgprintf("postgres query execution failed: %s\n", PQresStatus(PQresultStatus(pgRet))); + bHadError = 1; + } + PQclear(pgRet); + + return(bHadError); +} + + +/* The following function writes the current log entry + * to an established PgSQL session. + * Enhanced function to take care of the returned error + * value (if there is such). Note that this may happen due to + * a sql format error - connection aborts were properly handled + * before my patch. -- rgerhards, 2009-04-17 + */ +static rsRetVal +writePgSQL(uchar *psz, wrkrInstanceData_t *pWrkrData) +{ + int bHadError = 0; + DEFiRet; + + assert(psz != NULL); + assert(pWrkrData != NULL); + + dbgprintf("writePgSQL: %s\n", psz); + + bHadError = tryExec(psz, pWrkrData); /* try insert */ + + if (bHadError || (PQstatus(pWrkrData->f_hpgsql) != CONNECTION_OK)) { +#if 0 /* re-enable once we have transaction support */ + /* error occurred, try to re-init connection and retry */ + int inTransaction = 0; + if(pData->f_hpgsql != NULL) { + PGTransactionStatusType xactStatus = PQtransactionStatus(pData->f_hpgsql); + if((xactStatus == PQTRANS_INTRANS) || (xactStatus == PQTRANS_ACTIVE)) { + inTransaction = 1; + } + } + if ( inTransaction == 0 ) +#endif + { + closePgSQL(pWrkrData); /* close the current handle */ + CHKiRet(initPgSQL(pWrkrData, 0)); /* try to re-open */ + bHadError = tryExec(psz, pWrkrData); /* retry */ + } + if(bHadError || (PQstatus(pWrkrData->f_hpgsql) != CONNECTION_OK)) { + /* we failed, giving up for now */ + reportDBError(pWrkrData, 0); + closePgSQL(pWrkrData); /* free ressources */ + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + } + +finalize_it: + if (iRet == RS_RET_OK) { + pWrkrData->eLastPgSQLStatus = CONNECTION_OK; /* reset error for error supression */ + } + + RETiRet; +} + + +BEGINtryResume +CODESTARTtryResume + if (pWrkrData->f_hpgsql == NULL) { + iRet = initPgSQL(pWrkrData, 1); + if (iRet == RS_RET_OK) { + /* the code above seems not to actually connect to the database. As such, we do a + * dummy statement (a pointless select...) to verify the connection and return + * success only when that statemetn succeeds. Note that I am far from being a + * PostgreSQL expert, so any patch that does the desired result in a more + * intelligent way is highly welcome. -- rgerhards, 2009-12-16 + */ + iRet = writePgSQL((uchar*)"select 'a' as a", pWrkrData); + } + } +ENDtryResume + + +BEGINbeginTransaction +CODESTARTbeginTransaction +ENDbeginTransaction + + +BEGINcommitTransaction +CODESTARTcommitTransaction + dbgprintf("ompgsql: beginTransaction\n"); + if (pWrkrData->f_hpgsql == NULL) + initPgSQL(pWrkrData, 0); + CHKiRet(writePgSQL((uchar*) "BEGIN", pWrkrData)); /* TODO: make user-configurable */ + + for (unsigned i = 0 ; i < nParams ; ++i) { + iRet = writePgSQL(actParam(pParams, 1, i, 0).param, pWrkrData); + if (iRet != RS_RET_OK + && iRet != RS_RET_DEFER_COMMIT + && iRet != RS_RET_PREVIOUS_COMMITTED) { + /*if(mysql_rollback(pWrkrData->hmysql) != 0) { + DBGPRINTF("ommysql: server error: transaction could not be rolled back\n"); + }*/ + // closeMySQL(pWrkrData); + // FINALIZE; + } + } + + CHKiRet(writePgSQL((uchar*) "COMMIT", pWrkrData)); /* TODO: make user-configurable */ + +finalize_it: + if (iRet == RS_RET_OK) { + pWrkrData->eLastPgSQLStatus = CONNECTION_OK; /* reset error for error supression */ + } + +ENDcommitTransaction + + +static inline void +setInstParamDefaults(instanceData *pData) +{ + pData->tpl = NULL; + pData->multi_row = 100; + pData->trans_commit = 100; + pData->trans_age = 60; + pData->port = 5432; + strcpy(pData->user, "postgres"); + strcpy(pData->pass, "postgres"); +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; + char *cstr; + size_t len; +CODESTARTnewActInst + if ((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + CODE_STD_STRING_REQUESTparseSelectorAct(1) + for (i = 0 ; i < actpblk.nParams ; ++i) { + if (!pvals[i].bUsed) + continue; + if (!strcmp(actpblk.descr[i].name, "server")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + len = es_strlen(pvals[i].val.d.estr); + if(len >= sizeof(pData->srv)-1) { + parser_errmsg("ompgsql: srv parameter longer than supported " + "maximum of %d characters", (int)sizeof(pData->srv)-1); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + memcpy(pData->srv, cstr, len+1); + free(cstr); + } else if (!strcmp(actpblk.descr[i].name, "port")) { + pData->port = (int) pvals[i].val.d.n; + } else if (!strcmp(actpblk.descr[i].name, "serverport")) { + pData->port = (int) pvals[i].val.d.n; + } else if (!strcmp(actpblk.descr[i].name, "multirows")) { + pData->multi_row = (int) pvals[i].val.d.n; + } else if (!strcmp(actpblk.descr[i].name, "trans_size")) { + pData->trans_commit = (int) pvals[i].val.d.n; + } else if (!strcmp(actpblk.descr[i].name, "trans_age")) { + pData->trans_age = (int) pvals[i].val.d.n; + } else if (!strcmp(actpblk.descr[i].name, "db")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + len = es_strlen(pvals[i].val.d.estr); + if(len >= sizeof(pData->dbname)-1) { + parser_errmsg("ompgsql: db parameter longer than supported " + "maximum of %d characters", (int)sizeof(pData->dbname)-1); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + memcpy(pData->dbname, cstr, len+1); + free(cstr); + } else if ( !strcmp(actpblk.descr[i].name, "user") + || !strcmp(actpblk.descr[i].name, "uid")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + len = es_strlen(pvals[i].val.d.estr); + if(len >= sizeof(pData->user)-1) { + parser_errmsg("ompgsql: user/uid parameter longer than supported " + "maximum of %d characters", (int)sizeof(pData->user)-1); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + memcpy(pData->user, cstr, len+1); + free(cstr); + } else if ( !strcmp(actpblk.descr[i].name, "pass") + || !strcmp(actpblk.descr[i].name, "pwd")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + len = es_strlen(pvals[i].val.d.estr); + if(len >= sizeof(pData->pass)-1) { + parser_errmsg("ompgsql: pass/pwd parameter longer than supported " + "maximum of %d characters", (int)sizeof(pData->pass)-1); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + memcpy(pData->pass, cstr, len+1); + free(cstr); + } else if (!strcmp(actpblk.descr[i].name, "template")) { + pData->tpl = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if (!strcmp(actpblk.descr[i].name, "conninfo")) { + cstr = es_str2cstr(pvals[i].val.d.estr, NULL); + len = es_strlen(pvals[i].val.d.estr); + if(len >= sizeof(pData->conninfo)-1) { + parser_errmsg("ompgsql: conninfo parameter longer than supported " + "maximum of %d characters", (int)sizeof(pData->conninfo)-1); + ABORT_FINALIZE(RS_RET_PARAM_ERROR); + } + memcpy(pData->conninfo, cstr, len+1); + free(cstr); + } else { + dbgprintf("ompgsql: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + if (strlen(pData->conninfo) == 0 && (strlen(pData->srv) == 0 || strlen(pData->dbname) == 0)) { + parser_errmsg("ompgsql: must provide conninfo or server and dbname"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if (pData->tpl == NULL) { + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*) strdup(" StdPgSQLFmt"), OMSR_RQD_TPL_OPT_SQL)); + } else { + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*) strdup((char*) pData->tpl), OMSR_RQD_TPL_OPT_SQL)); + } + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + +BEGINparseSelectorAct + int iPgSQLPropErr = 0; +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* first check if this config line is actually for us + * The first test [*p == '>'] can be skipped if a module shall only + * support the newer slection syntax [:modname:]. This is in fact + * recommended for new modules. Please note that over time this part + * will be handled by rsyslogd itself, but for the time being it is + * a good compromise to do it at the module level. + * rgerhards, 2007-10-15 + */ + + if (!strncmp((char*) p, ":ompgsql:", sizeof(":ompgsql:") - 1)) + p += sizeof(":ompgsql:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + else + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + + /* ok, if we reach this point, we have something for us */ + if ((iRet = createInstance(&pData)) != RS_RET_OK) + goto finalize_it; + setInstParamDefaults(pData); + + /* sur5r 2007-10-18: added support for PgSQL + * :ompgsql:server,dbname,userid,password + * Now we read the PgSQL connection properties + * and verify that the properties are valid. + */ + if (getSubString(&p, pData->srv, MAXHOSTNAMELEN+1, ',')) + iPgSQLPropErr++; + dbgprintf("%p:%s\n",p,p); + if (*pData->srv == '\0') + iPgSQLPropErr++; + if (getSubString(&p, pData->dbname, _DB_MAXDBLEN+1, ',')) + iPgSQLPropErr++; + if (*pData->dbname == '\0') + iPgSQLPropErr++; + if (getSubString(&p, pData->user, _DB_MAXUNAMELEN+1, ',')) + iPgSQLPropErr++; + if (*pData->user == '\0') + iPgSQLPropErr++; + if (getSubString(&p, pData->pass, _DB_MAXPWDLEN+1, ';')) + iPgSQLPropErr++; + /* now check for template + * We specify that the SQL option must be present in the template. + * This is for your own protection (prevent sql injection). + */ + if (*(p - 1) == ';') { + p--; + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_RQD_TPL_OPT_SQL, (uchar*) pData->tpl)); + } else { + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_RQD_TPL_OPT_SQL, (uchar*)" StdPgSQLFmt")); + } + + /* If we detect invalid properties, we disable logging, + * because right properties are vital at this place. + * Retries make no sense. + */ + if (iPgSQLPropErr) { + LogError(0, RS_RET_INVALID_PARAMS, "Trouble with PgSQL connection properties. " + "-PgSQL logging disabled"); + ABORT_FINALIZE(RS_RET_INVALID_PARAMS); + } + +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMODTX_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +/* CODEqueryEtryPt_TXIF_OMOD_QUERIES currently no TX support! */ /* we support the transactional interface! */ +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + INITChkCoreFeature(bCoreSupportsBatching, CORE_FEATURE_BATCHING); + if (!bCoreSupportsBatching) { + LogError(0, NO_ERRCODE, "ompgsql: rsyslog core too old"); + ABORT_FINALIZE(RS_RET_ERR); + } +ENDmodInit + +/* vi:set ai: */ diff --git a/plugins/omprog/Makefile.am b/plugins/omprog/Makefile.am new file mode 100644 index 0000000..63fe09b --- /dev/null +++ b/plugins/omprog/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = omprog.la + +omprog_la_SOURCES = omprog.c +omprog_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +omprog_la_LDFLAGS = -module -avoid-version +omprog_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/omprog/Makefile.in b/plugins/omprog/Makefile.in new file mode 100644 index 0000000..f54047d --- /dev/null +++ b/plugins/omprog/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omprog/omprog.c b/plugins/omprog/omprog.c new file mode 100644 index 0000000..f21169a --- /dev/null +++ b/plugins/omprog/omprog.c @@ -0,0 +1,1281 @@ +/* omprog.c + * This output plugin enables rsyslog to execute a program and + * feed it the message stream as standard input. + * + * NOTE: read comments in module-template.h for more specifics! + * + * File begun on 2009-04-01 by RGerhards + * + * Copyright 2009-2020 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include <stdio.h> +#include <syslog.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/wait.h> +#include <pthread.h> +#include <poll.h> + +#include "rsyslog.h" +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "cfsysline.h" +#include "glbl.h" +#include "rsconf.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omprog") + +extern char **environ; /* POSIX environment ptr, by std not in a header... (see man 7 environ) */ + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +#define NO_HUP_FORWARD -1 /* indicates that HUP should NOT be forwarded */ +#define DEFAULT_CONFIRM_TIMEOUT_MS 10000 +#define DEFAULT_CLOSE_TIMEOUT_MS 5000 +#define RESPONSE_LINE_BUFFER_SIZE 4096 +#define OUTPUT_CAPTURE_BUFFER_SIZE 4096 +#define MAX_FD_TO_CLOSE 65535 + +typedef struct childProcessCtx { + int bIsRunning; /* is the program running? (if 0, next fields are uninitialized) */ + pid_t pid; /* pid of currently running child process */ + int fdPipeOut; /* fd for sending messages to the program */ + int fdPipeIn; /* fd for receiving status messages from the program, or -1 */ +} childProcessCtx_t; + +typedef struct outputCaptureCtx { + uchar *szFileName; /* name of file to write the program output to, or NULL */ + mode_t fCreateMode; /* output file creation permissions */ + pthread_mutex_t mutStart; /* mutex for starting the output-capture thread */ + pthread_mutex_t mutWrite; /* mutex for reopening the output file on HUP while being written */ + pthread_mutex_t mutTerm; /* mutex for signaling the termination of the thread */ + pthread_cond_t condTerm; /* condition for signaling the termination of the thread */ + int bIsRunning; /* is the thread running? (if 0, next fields are uninitialized) */ + pthread_t thrdID; /* ID of the output-capture thread */ + int fdPipe[2]; /* pipe for capturing the output of the child processes */ + int fdFile; /* fd of the output file (-1 if it could not be opened) */ + int bFileErr; /* file open error occurred? (to avoid reporting too many errors) */ + int bReadErr; /* read error occurred? (to avoid reporting too many errors) */ + int bWriteErr; /* write error occurred? (to avoid reporting too many errors) */ +} outputCaptureCtx_t; + +typedef struct _instanceData { + uchar *szBinary; /* name of external program to call */ + char **aParams; /* optional parameters to pass to external program */ + int iParams; /* holds the count of parameters if set */ + uchar *szTemplateName; /* assigned output template */ + int bConfirmMessages; /* does the program provide feedback via stdout? */ + long lConfirmTimeout; /* how long to wait for feedback from the program (ms) */ + int bReportFailures; /* report failures returned by the program as warning logs? */ + int bUseTransactions; /* send begin/end transaction marks to program? */ + uchar *szBeginTransactionMark; /* mark message for begin transaction */ + uchar *szCommitTransactionMark; /* mark message for commit transaction */ + int iHUPForward; /* signal to forward on HUP (or NO_HUP_FORWARD) */ + int bSignalOnClose; /* should send SIGTERM to program before closing pipe? */ + long lCloseTimeout; /* how long to wait for program to terminate after closing pipe (ms) */ + int bKillUnresponsive; /* should send SIGKILL if closeTimeout is reached? */ + int bForceSingleInst; /* start only one instance of program, even with multiple workers? */ + childProcessCtx_t *pSingleChildCtx; /* child process context when bForceSingleInst=true */ + pthread_mutex_t *pSingleChildMut; /* mutex for interacting with single child process */ + outputCaptureCtx_t *pOutputCaptureCtx; /* settings and state for the output capture thread */ + time_t block_if_err; /* time until which interface error is not to be shown */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + childProcessCtx_t *pChildCtx; /* child process context (can be equal to pSingleChildCtx) */ +} wrkrInstanceData_t; + +typedef struct configSettings_s { + uchar *szBinary; /* name of external program to call */ +} configSettings_t; +static configSettings_t cs; + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "binary", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "confirmMessages", eCmdHdlrBinary, 0 }, + { "confirmTimeout", eCmdHdlrInt, 0 }, + { "reportFailures", eCmdHdlrBinary, 0 }, + { "useTransactions", eCmdHdlrBinary, 0 }, + { "beginTransactionMark", eCmdHdlrString, 0 }, + { "commitTransactionMark", eCmdHdlrString, 0 }, + { "forceSingleInstance", eCmdHdlrBinary, 0 }, + { "hup.signal", eCmdHdlrGetWord, 0 }, + { "template", eCmdHdlrGetWord, 0 }, + { "signalOnClose", eCmdHdlrBinary, 0 }, + { "closeTimeout", eCmdHdlrInt, 0 }, + { "killUnresponsive", eCmdHdlrBinary, 0 }, + { "output", eCmdHdlrString, 0 }, + { "fileCreateMode", eCmdHdlrFileCreateMode, 0 } +}; + +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +/* execute the external program (must be called in child context after fork). + */ +static __attribute__((noreturn)) void +execBinary(const instanceData *pData, int fdStdin, int fdStdout) +{ + int fdOutput, maxFd, fd, sigNum; + struct sigaction sigAct; + sigset_t sigSet; + char errStr[1024]; + + if(dup2(fdStdin, STDIN_FILENO) == -1) { + goto failed; + } + + if(pData->pOutputCaptureCtx != NULL) { + fdOutput = pData->pOutputCaptureCtx->fdPipe[1]; + } else { + fdOutput = open("/dev/null", O_WRONLY); + if(fdOutput == -1) { + goto failed; + } + } + + if(fdStdout != -1) { + /* confirmMessages enabled: redirect stdout to parent via pipe. After + * this point, anything written to the child's stdout will be treated + * by omprog as initialization feedback (see startChild). This + * includes debug messages (DBGPRINTF) when in debug mode. So we + * cannot use DBGPRINTF from this point on, except for error cases. + */ + if(dup2(fdStdout, STDOUT_FILENO) == -1) { + goto failed; + } + } else { + /* confirmMessages disabled: redirect stdout to file or /dev/null */ + if(dup2(fdOutput, STDOUT_FILENO) == -1) { + goto failed; + } + } + + /* redirect stderr to file or /dev/null */ + if(dup2(fdOutput, STDERR_FILENO) == -1) { + goto failed; + } + + /* close the file handles the child process doesn't need (all above STDERR). + * The following way is simple and portable, though not perfect. + * See https://stackoverflow.com/a/918469 for alternatives. + */ + maxFd = sysconf(_SC_OPEN_MAX); + if(maxFd < 0 || maxFd > MAX_FD_TO_CLOSE) { + maxFd = MAX_FD_TO_CLOSE; + } +# ifdef VALGRIND + else { /* don't close valgrind reserved fds, to avoid warnings */ + maxFd -= 10; + } +# endif + for(fd = STDERR_FILENO + 1 ; fd <= maxFd ; ++fd) { + close(fd); + } + + /* reset signal handlers to default */ + memset(&sigAct, 0, sizeof(sigAct)); + sigemptyset(&sigAct.sa_mask); + sigAct.sa_handler = SIG_DFL; + for(sigNum = 1 ; sigNum < NSIG ; ++sigNum) { + sigaction(sigNum, &sigAct, NULL); + } + + /* we need to block SIGINT, otherwise our program is cancelled when we are + * stopped in debug mode. + */ + sigAct.sa_handler = SIG_IGN; + sigaction(SIGINT, &sigAct, NULL); + sigemptyset(&sigSet); + sigprocmask(SIG_SETMASK, &sigSet, NULL); + + alarm(0); + + /* finally exec program */ + execve((char*)pData->szBinary, pData->aParams, environ); + +failed: + /* an error occurred: log it and exit the child process. We use the + * 'syslog' system call to log the error (we cannot use LogMsg/LogError, + * since these functions add directly to the rsyslog input queue). + */ + rs_strerror_r(errno, errStr, sizeof(errStr)); + DBGPRINTF("omprog: failed to execute program '%s': %s\n", + pData->szBinary, errStr); + openlog("rsyslogd", 0, LOG_SYSLOG); + syslog(LOG_ERR, "omprog: failed to execute program '%s': %s\n", + pData->szBinary, errStr); + exit(1); +} + +/* creates a pipe and starts program, uses pipe as stdin for program. + * rgerhards, 2009-04-01 + */ +static rsRetVal +openPipe(instanceData *pData, childProcessCtx_t *pChildCtx) +{ + int pipeStdin[2] = { -1, -1 }; + int pipeStdout[2] = { -1, -1 }; + pid_t cpid; + DEFiRet; + + /* open a pipe to send messages to the program */ + if(pipe(pipeStdin) == -1) { + ABORT_FINALIZE(RS_RET_ERR_CREAT_PIPE); + } + + /* if the 'confirmMessages' setting is enabled, open a pipe to receive + message confirmations from the program */ + if(pData->bConfirmMessages && pipe(pipeStdout) == -1) { + ABORT_FINALIZE(RS_RET_ERR_CREAT_PIPE); + } + + DBGPRINTF("omprog: executing program '%s' with '%d' parameters\n", pData->szBinary, + pData->iParams); + + cpid = fork(); + if(cpid == -1) { + ABORT_FINALIZE(RS_RET_ERR_FORK); + } + + if(cpid == 0) { /* we are now the child process: execute the program */ + /* close the pipe ends that the child doesn't need */ + close(pipeStdin[1]); + if(pipeStdout[0] != -1) { + close(pipeStdout[0]); + } + + execBinary(pData, pipeStdin[0], pipeStdout[1]); + /* NO CODE HERE - WILL NEVER BE REACHED! */ + } + + DBGPRINTF("omprog: child has pid %d\n", (int) cpid); + + /* close the pipe ends that the parent doesn't need */ + close(pipeStdin[0]); + if(pipeStdout[1] != -1) { + close(pipeStdout[1]); + } + + pChildCtx->fdPipeOut = pipeStdin[1]; /* we'll send messages to the program via this fd */ + pChildCtx->fdPipeIn = pipeStdout[0]; /* we'll receive message confirmations via this fd */ + pChildCtx->pid = cpid; + pChildCtx->bIsRunning = 1; + +finalize_it: + if(iRet != RS_RET_OK) { + if(pipeStdin[0] != -1) { + close(pipeStdin[0]); + close(pipeStdin[1]); + } + if(pipeStdout[0] != -1) { + close(pipeStdout[0]); + close(pipeStdout[1]); + } + } + RETiRet; +} + +static void +waitForChild(instanceData *pData, childProcessCtx_t *pChildCtx) +{ + int status; + int ret; + long counter; + + counter = pData->lCloseTimeout / 10; + while ((ret = waitpid(pChildCtx->pid, &status, WNOHANG)) == 0 && counter > 0) { + srSleep(0, 10000); /* 0 seconds, 10 milliseconds */ + --counter; + } + + if (ret == 0) { /* timeout reached */ + if (!pData->bKillUnresponsive) { + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: program '%s' (pid %ld) did not terminate " + "within timeout (%ld ms); ignoring it", pData->szBinary, + (long) pChildCtx->pid, pData->lCloseTimeout); + return; + } + + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: program '%s' (pid %ld) did not terminate " + "within timeout (%ld ms); killing it", pData->szBinary, (long) pChildCtx->pid, + pData->lCloseTimeout); + if (kill(pChildCtx->pid, SIGKILL) == -1) { + LogError(errno, RS_RET_SYS_ERR, "omprog: could not send SIGKILL to child process"); + return; + } + + ret = waitpid(pChildCtx->pid, &status, 0); + } + + /* waitpid will fail with errno == ECHILD if the child process has already + been reaped by the rsyslogd main loop (see rsyslogd.c) */ + if(ret == pChildCtx->pid) { + glblReportChildProcessExit(runConf, pData->szBinary, pChildCtx->pid, status); + } +} + +/* close pipe and wait for child to terminate + */ +static void +cleanupChild(instanceData *pData, childProcessCtx_t *pChildCtx) +{ + assert(pChildCtx->bIsRunning); + + if(pChildCtx->fdPipeIn != -1) { + close(pChildCtx->fdPipeIn); + pChildCtx->fdPipeIn = -1; + } + if(pChildCtx->fdPipeOut != -1) { + close(pChildCtx->fdPipeOut); + pChildCtx->fdPipeOut = -1; + } + + /* wait for the child AFTER closing the pipe, so it receives EOF */ + waitForChild(pData, pChildCtx); + + pChildCtx->bIsRunning = 0; +} + +/* Send SIGTERM to child process if configured to do so, close pipe + * and wait for child to terminate. + */ +static void +terminateChild(instanceData *pData, childProcessCtx_t *pChildCtx) +{ + DBGPRINTF("terminateChild called\n"); + assert(pChildCtx->bIsRunning); + + if (pData->bSignalOnClose) { + kill(pChildCtx->pid, SIGTERM); + } + + cleanupChild(pData, pChildCtx); +} + +/* write message to pipe + * note that we do not try to run block-free. If the user fears something + * may block (and this is not acceptable), the action should be run on its + * own action queue. + */ +static rsRetVal +sendMessage(instanceData *pData, childProcessCtx_t *pChildCtx, const uchar *szMsg) +{ + ssize_t written; + size_t offset = 0; + DEFiRet; + + const size_t len = strlen((char*)szMsg); + + do { + written = write(pChildCtx->fdPipeOut, ((char*)szMsg) + offset, len - offset); + if(written == -1) { + if(errno == EINTR) { + continue; /* call interrupted: retry write */ + } + if(errno == EPIPE) { + LogMsg(0, RS_RET_ERR_WRITE_PIPE, LOG_WARNING, + "omprog: program '%s' (pid %ld) terminated; will be restarted", + pData->szBinary, (long) pChildCtx->pid); + cleanupChild(pData, pChildCtx); /* force restart in tryResume() */ + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + LogError(errno, RS_RET_ERR_WRITE_PIPE, "omprog: error sending message to program"); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + offset += written; + } while(offset < len); + +finalize_it: + RETiRet; +} + +static rsRetVal +lineToStatusCode(instanceData *pData, const char* line) +{ + DEFiRet; + + /* strip leading dots (.) from the line, so the program can use them as a keep-alive mechanism */ + while(line[0] == '.') { + ++line; + } + + if(strcmp(line, "OK") == 0) { + iRet = RS_RET_OK; + } else if(strcmp(line, "DEFER_COMMIT") == 0) { + iRet = RS_RET_DEFER_COMMIT; + } else if(strcmp(line, "PREVIOUS_COMMITTED") == 0) { + iRet = RS_RET_PREVIOUS_COMMITTED; + } else { + /* anything else is considered a recoverable error */ + DBGPRINTF("omprog: program '%s' returned: %s\n", pData->szBinary, line); + if(pData->bReportFailures) { + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: program '%s' returned: %s", + pData->szBinary, line); + } + iRet = RS_RET_SUSPENDED; + } + RETiRet; +} + +static rsRetVal +readStatus(instanceData *pData, childProcessCtx_t *pChildCtx) +{ + struct pollfd fdToPoll[1]; + int numReady; + char lineBuf[RESPONSE_LINE_BUFFER_SIZE]; + ssize_t lenRead; + size_t offset = 0; + int lineEnded = 0; + DEFiRet; + + fdToPoll[0].fd = pChildCtx->fdPipeIn; + fdToPoll[0].events = POLLIN; + + do { + numReady = poll(fdToPoll, 1, pData->lConfirmTimeout); + if(numReady == -1) { + if(errno == EINTR) { + continue; /* call interrupted: retry poll */ + } + LogError(errno, RS_RET_SYS_ERR, "omprog: error polling for response from program"); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + if(numReady == 0) { /* timeout reached */ + LogMsg(0, RS_RET_TIMED_OUT, LOG_WARNING, "omprog: program '%s' (pid %ld) did not respond " + "within timeout (%ld ms); will be restarted", pData->szBinary, + (long) pChildCtx->pid, pData->lConfirmTimeout); + terminateChild(pData, pChildCtx); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + lenRead = read(pChildCtx->fdPipeIn, lineBuf + offset, sizeof(lineBuf) - offset - 1); + if(lenRead == -1) { + if(errno == EINTR) { + continue; /* call interrupted: retry poll + read */ + } + LogError(errno, RS_RET_READ_ERR, "omprog: error reading response from program"); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + if(lenRead == 0) { + LogMsg(0, RS_RET_READ_ERR, LOG_WARNING, "omprog: program '%s' (pid %ld) terminated; " + "will be restarted", pData->szBinary, (long) pChildCtx->pid); + cleanupChild(pData, pChildCtx); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + offset += lenRead; + lineBuf[offset] = '\0'; + lineEnded = (lineBuf[offset-1] == '\n'); + + /* check that the program has not returned multiple lines. This should not occur if + * the program honors the specified interface. Otherwise, we force a restart of the + * program, since we have probably lost synchronism with it. + */ + if(!lineEnded && strchr(lineBuf + offset - lenRead, '\n') != NULL) { + DBGPRINTF("omprog: program '%s' returned: %s\n", pData->szBinary, lineBuf); + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: program '%s' returned a multiline response; " + "will be restarted", pData->szBinary); + if(pData->bReportFailures) { + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: program '%s' returned: %s", + pData->szBinary, lineBuf); + } + terminateChild(pData, pChildCtx); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + } while(!lineEnded && offset < sizeof(lineBuf) - 1); + + if(!lineEnded) { + DBGPRINTF("omprog: program '%s' returned: %s\n", pData->szBinary, lineBuf); + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: program '%s' returned a too long response; " + "will be restarted", pData->szBinary); + if(pData->bReportFailures) { + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: program '%s' returned: %s", + pData->szBinary, lineBuf); + } + terminateChild(pData, pChildCtx); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + lineBuf[offset-1] = '\0'; /* strip newline char */ + + /* NOTE: coverity does not like CHKiRet() if it is the last thing before finalize_it. + * Reason is that the if() inside that macro than does not lead to different code paths. + */ + iRet = lineToStatusCode(pData, lineBuf); + +finalize_it: + RETiRet; +} + +static rsRetVal +allocChildCtx(childProcessCtx_t **ppChildCtx) +{ + childProcessCtx_t *pChildCtx; + DEFiRet; + + CHKmalloc(pChildCtx = calloc(1, sizeof(childProcessCtx_t))); + *ppChildCtx = pChildCtx; + + pChildCtx->bIsRunning = 0; + pChildCtx->pid = -1; + pChildCtx->fdPipeOut = -1; + pChildCtx->fdPipeIn = -1; + +finalize_it: + RETiRet; +} + +static rsRetVal +startChild(instanceData *pData, childProcessCtx_t *pChildCtx) +{ + DEFiRet; + + assert(!pChildCtx->bIsRunning); + + CHKiRet(openPipe(pData, pChildCtx)); + + if(pData->bConfirmMessages) { + /* wait for program to confirm successful initialization */ + CHKiRet(readStatus(pData, pChildCtx)); + } + +finalize_it: + if(iRet != RS_RET_OK && pChildCtx->bIsRunning) { + /* if initialization has failed, terminate program */ + terminateChild(pData, pChildCtx); + } + RETiRet; +} + +static rsRetVal +startSingleChildOnce(instanceData *pData) +{ + DEFiRet; + + assert(pData->bForceSingleInst); + CHKiConcCtrl(pthread_mutex_lock(pData->pSingleChildMut)); + + if(pData->pSingleChildCtx->bIsRunning) + goto finalize_it; /* child process already started: nothing to do */ + + iRet = startChild(pData, pData->pSingleChildCtx); + +finalize_it: + pthread_mutex_unlock(pData->pSingleChildMut); + RETiRet; +} + +static void +writeOutputToFile(outputCaptureCtx_t *pCtx, char *buf, ssize_t len) +{ + ssize_t written; + ssize_t offset = 0; + + assert(pCtx->bIsRunning); + pthread_mutex_lock(&pCtx->mutWrite); + + if(pCtx->fdFile == -1) { + if(pCtx->bFileErr) { /* discarding output because file couldn't be opened */ + goto done; + } + + pCtx->fdFile = open((char*)pCtx->szFileName, O_WRONLY | O_APPEND | O_CREAT, + pCtx->fCreateMode); + if(pCtx->fdFile == -1) { + LogError(errno, RS_RET_NO_FILE_ACCESS, "omprog: error opening output file %s; " + "output from program will be discarded", pCtx->szFileName); + pCtx->bFileErr = 1; /* avoid reporting too many errors */ + goto done; + } + } + + do { + written = write(pCtx->fdFile, buf + offset, len - offset); + if(written == -1) { + if(errno == EINTR) { + continue; /* call interrupted: retry write */ + } + + if(!pCtx->bWriteErr) { + LogError(errno, RS_RET_SYS_ERR, "omprog: error writing to output file " + "(subsequent errors will not be reported)"); + pCtx->bWriteErr = 1; /* avoid reporting too many errors */ + } + break; + } + + if(pCtx->bWriteErr) { + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: resumed writing to output file"); + pCtx->bWriteErr = 0; + } + + offset += written; + } while(offset < len); + +done: + pthread_mutex_unlock(&pCtx->mutWrite); +} + +static void +closeOutputFile(outputCaptureCtx_t *pCtx) +{ + DBGPRINTF("omprog: reopening output file upon reception of HUP signal\n"); + pthread_mutex_lock(&pCtx->mutWrite); + + if(pCtx->fdFile != -1) { + close(pCtx->fdFile); + pCtx->fdFile = -1; + } + pCtx->bFileErr = 0; /* if there was an error opening the file, we'll retry */ + + pthread_mutex_unlock(&pCtx->mutWrite); +} + +/* This code runs in a dedicated thread. Captures the output of the child processes + * through a shared pipe (one reader and multiple writers), and writes the output + * to a file. The lines concurrently emmitted to stdout/stderr by the child processes + * will not appear intermingled in the output file if 1) the lines are short enough + * (less than PIPE_BUF bytes long: 4KB on Linux, and 512 bytes or more on other + * POSIX systems), and 2) the program outputs each line using a single 'write' + * syscall (line buffering mode). When a HUP signal is received, the output file is + * reopened (this provides support for external rotation of the file). + */ +static void * +captureOutput(void *_pCtx) { + outputCaptureCtx_t *pCtx = (outputCaptureCtx_t *)_pCtx; + sigset_t sigSet; + char readBuf[OUTPUT_CAPTURE_BUFFER_SIZE]; + ssize_t lenRead; + + DBGPRINTF("omprog: starting output capture thread\n"); + + /* block signals for this thread (otherwise shutdown hangs on FreeBSD) */ + sigfillset(&sigSet); + pthread_sigmask(SIG_SETMASK, &sigSet, NULL); + + for(;;) { + lenRead = read(pCtx->fdPipe[0], readBuf, sizeof(readBuf)); + if(lenRead == -1) { + if(errno == EINTR) { + continue; /* call interrupted: retry read */ + } + + if(!pCtx->bReadErr) { + LogError(errno, RS_RET_SYS_ERR, "omprog: error capturing output from program " + "(subsequent errors will not be reported)"); + pCtx->bReadErr = 1; /* avoid reporting too many errors */ + } + continue; /* continue with next line */ + } + + if(lenRead == 0) { + break; /* all write ends of pipe closed: exit loop and terminate thread */ + } + + if(pCtx->bReadErr) { + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: resumed capturing output from program"); + pCtx->bReadErr = 0; + } + + writeOutputToFile(pCtx, readBuf, lenRead); + } + + DBGPRINTF("omprog: all output-capture pipe ends closed, terminating output capture thread\n"); + pthread_mutex_lock(&pCtx->mutTerm); + pCtx->bIsRunning = 0; + pthread_cond_signal(&pCtx->condTerm); + pthread_mutex_unlock(&pCtx->mutTerm); + return NULL; +} + +static rsRetVal +allocOutputCaptureCtx(outputCaptureCtx_t **ppCtx) +{ + outputCaptureCtx_t *pCtx; + DEFiRet; + + CHKmalloc(pCtx = calloc(1, sizeof(outputCaptureCtx_t))); + *ppCtx = pCtx; + + pCtx->szFileName = NULL; + pCtx->fCreateMode = 0600; + pCtx->bIsRunning = 0; + + CHKiConcCtrl(pthread_mutex_init(&pCtx->mutStart, NULL)); + CHKiConcCtrl(pthread_mutex_init(&pCtx->mutWrite, NULL)); + CHKiConcCtrl(pthread_mutex_init(&pCtx->mutTerm, NULL)); + CHKiConcCtrl(pthread_cond_init(&pCtx->condTerm, NULL)); + +finalize_it: + RETiRet; +} + +static void +freeOutputCaptureCtx(outputCaptureCtx_t *pCtx) { + if(pCtx->szFileName != NULL) { + free(pCtx->szFileName); + } + + pthread_cond_destroy(&pCtx->condTerm); + pthread_mutex_destroy(&pCtx->mutTerm); + pthread_mutex_destroy(&pCtx->mutWrite); + pthread_mutex_destroy(&pCtx->mutStart); + + free(pCtx); +} + +static rsRetVal +startOutputCaptureOnce(outputCaptureCtx_t *pCtx) +{ + int pip[2] = { -1, -1 }; + DEFiRet; + + CHKiConcCtrl(pthread_mutex_lock(&pCtx->mutStart)); + + if(pCtx->bIsRunning) + goto finalize_it; /* output capture thread already started: nothing to do */ + + /* open a (single) pipe to capture output from (all) child processes */ + if(pipe(pip) == -1) { + ABORT_FINALIZE(RS_RET_ERR_CREAT_PIPE); + } + + pCtx->fdPipe[0] = pip[0]; + pCtx->fdPipe[1] = pip[1]; + pCtx->fdFile = -1; + pCtx->bFileErr = 0; + pCtx->bReadErr = 0; + pCtx->bWriteErr = 0; + + /* start a thread to read lines from the pipe and write them to the output file */ + CHKiConcCtrl(pthread_create(&pCtx->thrdID, NULL, captureOutput, (void *)pCtx)); + + pCtx->bIsRunning = 1; + +finalize_it: + if(iRet != RS_RET_OK && pip[0] != -1) { + close(pip[0]); + close(pip[1]); + } + pthread_mutex_unlock(&pCtx->mutStart); + RETiRet; +} + +static void +endOutputCapture(outputCaptureCtx_t *pCtx, long timeoutMs) +{ + struct timespec ts; + int bTimedOut; + + assert(pCtx->bIsRunning); + + /* close our write end of the output-capture pipe */ + close(pCtx->fdPipe[1]); + + /* the output capture thread will now terminate because there are no more + * writers attached to the output-capture pipe. However, if a child becomes + * unresponsive without closing its pipe end (assuming killUnresponsive=off), + * we would wait forever. To avoid this, we wait for the thread to terminate + * during a maximum timeout (we reuse the 'closeTimeout' setting for this). + */ + timeoutComp(&ts, timeoutMs); + pthread_mutex_lock(&pCtx->mutTerm); + bTimedOut = 0; + while(pCtx->bIsRunning && !bTimedOut) { + if(pthread_cond_timedwait(&pCtx->condTerm, &pCtx->mutTerm, &ts) == ETIMEDOUT) { + bTimedOut = 1; + } + } + pthread_mutex_unlock(&pCtx->mutTerm); + + if(bTimedOut) { + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: forcing termination of output capture " + "thread because of unresponsive child process"); + pthread_cancel(pCtx->thrdID); + pCtx->bIsRunning = 0; + } + + pthread_join(pCtx->thrdID, NULL); + + /* close the read end of the output-capture pipe */ + close(pCtx->fdPipe[0]); + + /* close the output file (if it could be opened) */ + if(pCtx->fdFile != -1) { + close(pCtx->fdFile); + } +} + + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + cs.szBinary = NULL; /* name of binary to call */ +ENDinitConfVars + + +BEGINcreateInstance +CODESTARTcreateInstance + pData->szBinary = NULL; + pData->szTemplateName = NULL; + pData->aParams = NULL; + pData->iParams = 0; + pData->bConfirmMessages = 0; + pData->block_if_err = 0; + pData->lConfirmTimeout = DEFAULT_CONFIRM_TIMEOUT_MS; + pData->bReportFailures = 0; + pData->bUseTransactions = 0; + pData->szBeginTransactionMark = NULL; + pData->szCommitTransactionMark = NULL; + pData->iHUPForward = NO_HUP_FORWARD; + pData->bSignalOnClose = 0; + pData->lCloseTimeout = DEFAULT_CLOSE_TIMEOUT_MS; + pData->bKillUnresponsive = -1; + pData->bForceSingleInst = 0; + pData->pSingleChildCtx = NULL; + pData->pSingleChildMut = NULL; + pData->pOutputCaptureCtx = NULL; +ENDcreateInstance + + +static rsRetVal +postInitInstance(instanceData *pData) +{ + DEFiRet; + + if(pData->bUseTransactions && pData->szBeginTransactionMark == NULL) { + pData->szBeginTransactionMark = (uchar*)strdup("BEGIN TRANSACTION"); + } + if(pData->bUseTransactions && pData->szCommitTransactionMark == NULL) { + pData->szCommitTransactionMark = (uchar*)strdup("COMMIT TRANSACTION"); + } + if(pData->bKillUnresponsive == -1) { /* default value: bSignalOnClose */ + pData->bKillUnresponsive = pData->bSignalOnClose; + } + + if(pData->pOutputCaptureCtx != NULL && pData->pOutputCaptureCtx->szFileName == NULL) { + LogError(0, RS_RET_CONF_PARAM_INVLD, "omprog: the 'fileCreateMode' parameter requires " + "specifying the 'output' parameter also"); + ABORT_FINALIZE(RS_RET_CONF_PARAM_INVLD); + } + + if(pData->bForceSingleInst) { + CHKmalloc(pData->pSingleChildMut = calloc(1, sizeof(pthread_mutex_t))); + CHKiConcCtrl(pthread_mutex_init(pData->pSingleChildMut, NULL)); + CHKiRet(allocChildCtx(&pData->pSingleChildCtx)); + /* do not start the child here. The config is still being parsed, and the daemon + has not been forked yet. When the daemon is forked, all fds will be closed! */ + } + +finalize_it: + /* no cleanup needed on error: newActInst() will call freeInstance() */ + RETiRet; +} + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pWrkrData->pChildCtx = NULL; + + if(pWrkrData->pData->pOutputCaptureCtx != NULL) { + CHKiRet(startOutputCaptureOnce(pWrkrData->pData->pOutputCaptureCtx)); + } + + if(pWrkrData->pData->bForceSingleInst) { + CHKiRet(startSingleChildOnce(pWrkrData->pData)); + pWrkrData->pChildCtx = pData->pSingleChildCtx; + } else { + CHKiRet(allocChildCtx(&pWrkrData->pChildCtx)); + CHKiRet(startChild(pWrkrData->pData, pWrkrData->pChildCtx)); + } + +finalize_it: +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) { + iRet = RS_RET_OK; + } +ENDisCompatibleWithFeature + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume + if(pWrkrData->pData->bForceSingleInst) { + CHKiConcCtrl(pthread_mutex_lock(pWrkrData->pData->pSingleChildMut)); + } + if(!pWrkrData->pChildCtx->bIsRunning) { + CHKiRet(startChild(pWrkrData->pData, pWrkrData->pChildCtx)); + } + +finalize_it: + if(pWrkrData->pData->bForceSingleInst) { + pthread_mutex_unlock(pWrkrData->pData->pSingleChildMut); + } +ENDtryResume + + +BEGINbeginTransaction +CODESTARTbeginTransaction + if(pWrkrData->pData->bForceSingleInst) { + CHKiConcCtrl(pthread_mutex_lock(pWrkrData->pData->pSingleChildMut)); + } + if(!pWrkrData->pData->bUseTransactions) { + FINALIZE; + } + + CHKiRet(sendMessage(pWrkrData->pData, pWrkrData->pChildCtx, + pWrkrData->pData->szBeginTransactionMark)); + CHKiRet(sendMessage(pWrkrData->pData, pWrkrData->pChildCtx, (uchar*) "\n")); + + if(pWrkrData->pData->bConfirmMessages) { + CHKiRet(readStatus(pWrkrData->pData, pWrkrData->pChildCtx)); + } + +finalize_it: + if(pWrkrData->pData->bForceSingleInst) { + pthread_mutex_unlock(pWrkrData->pData->pSingleChildMut); + } +ENDbeginTransaction + + +BEGINdoAction +CODESTARTdoAction + if(pWrkrData->pData->bForceSingleInst) { + CHKiConcCtrl(pthread_mutex_lock(pWrkrData->pData->pSingleChildMut)); + } + if(!pWrkrData->pChildCtx->bIsRunning) { /* should not occur */ + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + const uchar *const szMsg = ppString[0]; + const size_t len = strlen((char*)szMsg); + CHKiRet(sendMessage(pWrkrData->pData, pWrkrData->pChildCtx, szMsg)); + if(szMsg[len-1] != '\n') { + const time_t tt = time(NULL); + if(tt > pWrkrData->pData->block_if_err) { + LogMsg(0, NO_ERRCODE, LOG_WARNING, "omprog: messages must be terminated with \\n " + "at end of message, but this message is not: '%s'\n", ppString[0]); + pWrkrData->pData->block_if_err = tt + 30; + } + CHKiRet(sendMessage(pWrkrData->pData, pWrkrData->pChildCtx, (uchar*) "\n")); + } + + if(pWrkrData->pData->bConfirmMessages) { + CHKiRet(readStatus(pWrkrData->pData, pWrkrData->pChildCtx)); + } else if(pWrkrData->pData->bUseTransactions) { + /* ensure endTransaction will be called */ + iRet = RS_RET_DEFER_COMMIT; + } + +finalize_it: + if(pWrkrData->pData->bForceSingleInst) { + pthread_mutex_unlock(pWrkrData->pData->pSingleChildMut); + } +ENDdoAction + + +BEGINendTransaction +CODESTARTendTransaction + if(pWrkrData->pData->bForceSingleInst) { + CHKiConcCtrl(pthread_mutex_lock(pWrkrData->pData->pSingleChildMut)); + } + if(!pWrkrData->pData->bUseTransactions) { + FINALIZE; + } + + CHKiRet(sendMessage(pWrkrData->pData, pWrkrData->pChildCtx, + pWrkrData->pData->szCommitTransactionMark)); + CHKiRet(sendMessage(pWrkrData->pData, pWrkrData->pChildCtx, (uchar*) "\n")); + + if(pWrkrData->pData->bConfirmMessages) { + CHKiRet(readStatus(pWrkrData->pData, pWrkrData->pChildCtx)); + } + +finalize_it: + if(pWrkrData->pData->bForceSingleInst) { + pthread_mutex_unlock(pWrkrData->pData->pSingleChildMut); + } +ENDendTransaction + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + if(!pWrkrData->pData->bForceSingleInst) { + if(pWrkrData->pChildCtx->bIsRunning) { + terminateChild(pWrkrData->pData, pWrkrData->pChildCtx); + } + free(pWrkrData->pChildCtx); + } +ENDfreeWrkrInstance + + +BEGINfreeInstance + int i; +CODESTARTfreeInstance + if(pData->pSingleChildCtx != NULL) { + if(pData->pSingleChildCtx->bIsRunning) { + terminateChild(pData, pData->pSingleChildCtx); + } + free(pData->pSingleChildCtx); + } + + if(pData->pSingleChildMut != NULL) { + pthread_mutex_destroy(pData->pSingleChildMut); + free(pData->pSingleChildMut); + } + + if(pData->pOutputCaptureCtx != NULL) { + if(pData->pOutputCaptureCtx->bIsRunning) { + endOutputCapture(pData->pOutputCaptureCtx, pData->lCloseTimeout); + } + freeOutputCaptureCtx(pData->pOutputCaptureCtx); + } + + free(pData->szBinary); + free(pData->szTemplateName); + free(pData->szBeginTransactionMark); + free(pData->szCommitTransactionMark); + + if(pData->aParams != NULL) { + for (i = 0; i < pData->iParams; i++) { + free(pData->aParams[i]); + } + free(pData->aParams); + } +ENDfreeInstance + + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "binary")) { + CHKiRet(split_binary_parameters(&pData->szBinary, &pData->aParams, &pData->iParams, + pvals[i].val.d.estr)); + } else if(!strcmp(actpblk.descr[i].name, "confirmMessages")) { + pData->bConfirmMessages = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "confirmTimeout")) { + pData->lConfirmTimeout = (long) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "reportFailures")) { + pData->bReportFailures = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "useTransactions")) { + pData->bUseTransactions = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "beginTransactionMark")) { + pData->szBeginTransactionMark = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "commitTransactionMark")) { + pData->szCommitTransactionMark = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "forceSingleInstance")) { + pData->bForceSingleInst = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "signalOnClose")) { + pData->bSignalOnClose = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "closeTimeout")) { + pData->lCloseTimeout = (long) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "killUnresponsive")) { + pData->bKillUnresponsive = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "hup.signal")) { + const char *const sig = es_str2cstr(pvals[i].val.d.estr, NULL); + if(!strcmp(sig, "HUP")) + pData->iHUPForward = SIGHUP; + else if(!strcmp(sig, "USR1")) + pData->iHUPForward = SIGUSR1; + else if(!strcmp(sig, "USR2")) + pData->iHUPForward = SIGUSR2; + else if(!strcmp(sig, "INT")) + pData->iHUPForward = SIGINT; + else if(!strcmp(sig, "TERM")) + pData->iHUPForward = SIGTERM; + else { + LogError(0, RS_RET_CONF_PARAM_INVLD, + "omprog: hup.signal '%s' in hup.signal parameter", sig); + ABORT_FINALIZE(RS_RET_CONF_PARAM_INVLD); + } + free((void*)sig); + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->szTemplateName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "output")) { + if(pData->pOutputCaptureCtx == NULL) { + CHKiRet(allocOutputCaptureCtx(&pData->pOutputCaptureCtx)); + } + pData->pOutputCaptureCtx->szFileName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "fileCreateMode")) { + if(pData->pOutputCaptureCtx == NULL) { + CHKiRet(allocOutputCaptureCtx(&pData->pOutputCaptureCtx)); + } + pData->pOutputCaptureCtx->fCreateMode = (mode_t) pvals[i].val.d.n; + } else { + DBGPRINTF("omprog: program error, non-handled param '%s'\n", actpblk.descr[i].name); + } + } + + CODE_STD_STRING_REQUESTnewActInst(1) + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*)strdup(pData->szTemplateName == NULL ? + "RSYSLOG_FileFormat" : (char*)pData->szTemplateName), OMSR_NO_RQD_TPL_OPTS)); + + iRet = postInitInstance(pData); + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINparseSelectorAct +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* first check if this config line is actually for us */ + if(strncmp((char*) p, ":omprog:", sizeof(":omprog:") - 1)) { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + p += sizeof(":omprog:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + if(cs.szBinary == NULL) { + LogError(0, RS_RET_CONF_RQRD_PARAM_MISSING, "no binary to execute specified"); + ABORT_FINALIZE(RS_RET_CONF_RQRD_PARAM_MISSING); + } + + CHKiRet(createInstance(&pData)); + CHKmalloc(pData->szBinary = (uchar*) strdup((char*)cs.szBinary)); + + /* check if a non-standard template is to be applied */ + if(*(p-1) == ';') + --p; + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, 0, (uchar*) "RSYSLOG_FileFormat")); + + iRet = postInitInstance(pData); + +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINdoHUP +CODESTARTdoHUP + if(pData->bForceSingleInst && pData->iHUPForward != NO_HUP_FORWARD && + pData->pSingleChildCtx->bIsRunning) { + DBGPRINTF("omprog: forwarding HUP to program '%s' (pid %ld) as signal %d\n", + pData->szBinary, (long) pData->pSingleChildCtx->pid, pData->iHUPForward); + kill(pData->pSingleChildCtx->pid, pData->iHUPForward); + } + + if(pData->pOutputCaptureCtx != NULL && pData->pOutputCaptureCtx->bIsRunning) { + closeOutputFile(pData->pOutputCaptureCtx); + } +ENDdoHUP + + +BEGINdoHUPWrkr +CODESTARTdoHUPWrkr + if(!pWrkrData->pData->bForceSingleInst && pWrkrData->pData->iHUPForward != NO_HUP_FORWARD && + pWrkrData->pChildCtx->bIsRunning) { + DBGPRINTF("omprog: forwarding HUP to program '%s' (pid %ld) as signal %d\n", + pWrkrData->pData->szBinary, (long) pWrkrData->pChildCtx->pid, + pWrkrData->pData->iHUPForward); + kill(pWrkrData->pChildCtx->pid, pWrkrData->pData->iHUPForward); + } +ENDdoHUPWrkr + + +BEGINmodExit +CODESTARTmodExit + free(cs.szBinary); + cs.szBinary = NULL; +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_TXIF_OMOD_QUERIES /* we support the transactional interface */ +CODEqueryEtryPt_doHUP +CODEqueryEtryPt_doHUPWrkr +ENDqueryEtryPt + + +/* Reset legacy config variables for this module to default values. + */ +static rsRetVal +resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + free(cs.szBinary); + cs.szBinary = NULL; + RETiRet; +} + +BEGINmodInit() +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + /* tell engine which objects we need */ + + /* check that rsyslog core supports transactional plugins */ + INITChkCoreFeature(bCoreSupportsBatching, CORE_FEATURE_BATCHING); + if (!bCoreSupportsBatching) { + LogError(0, NO_ERRCODE, "omprog: rsyslog core too old (does not support batching)"); + ABORT_FINALIZE(RS_RET_ERR); + } + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionomprogbinary", 0, eCmdHdlrGetWord, NULL, &cs.szBinary, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); +CODEmodInit_QueryRegCFSLineHdlr +ENDmodInit diff --git a/plugins/omrelp/Makefile.am b/plugins/omrelp/Makefile.am new file mode 100644 index 0000000..906aab4 --- /dev/null +++ b/plugins/omrelp/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = omrelp.la + +omrelp_la_SOURCES = omrelp.c +omrelp_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RELP_CFLAGS) $(RSRT_CFLAGS) +omrelp_la_LDFLAGS = -module -avoid-version +omrelp_la_LIBADD = $(RELP_LIBS) diff --git a/plugins/omrelp/Makefile.in b/plugins/omrelp/Makefile.in new file mode 100644 index 0000000..c74c33a --- /dev/null +++ b/plugins/omrelp/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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install-ps-am + +install-ps-am: + +installcheck-am: + +maintainer-clean: maintainer-clean-am + -rm -f ./$(DEPDIR)/omrelp_la-omrelp.Plo + -rm -f Makefile +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-pkglibLTLIBRARIES + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \ + clean-generic clean-libtool clean-pkglibLTLIBRARIES \ + cscopelist-am ctags ctags-am distclean distclean-compile \ + distclean-generic distclean-libtool distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-data install-data-am install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-pdf \ + install-pdf-am install-pkglibLTLIBRARIES install-ps \ + install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omrelp/omrelp.c b/plugins/omrelp/omrelp.c new file mode 100644 index 0000000..5fc1dcc --- /dev/null +++ b/plugins/omrelp/omrelp.c @@ -0,0 +1,826 @@ +/* omrelp.c + * + * This is the implementation of the RELP output module. + * + * Note that when multiple action workers are activated, we currently + * also create multiple actions. This may be the source of some mild + * message loss (!) if the worker instance is shut down while the + * connection to the remote system is in retry state. + * TODO: think if we should implement a mode where we do NOT + * support multiple action worker instances. This would be + * slower, but not have this loss opportunity. But it should + * definitely be optional and by default off due to the + * performance implications (and given the fact that message + * loss is pretty unlikely in usual cases). + * + * + * File begun on 2008-03-13 by RGerhards + * + * Copyright 2008-2019 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <errno.h> +#include <ctype.h> +#include <librelp.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "cfsysline.h" +#include "module-template.h" +#include "glbl.h" +#include "errmsg.h" +#include "debug.h" +#include "parserif.h" +#include "unicode-helper.h" + +#ifndef RELP_DFLT_PT +# define RELP_DFLT_PT "514" +#endif + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omrelp") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(glbl) + +#define DFLT_ENABLE_TLS 0 +#define DFLT_ENABLE_TLSZIP 0 + +static relpEngine_t *pRelpEngine; /* our relp engine */ + +typedef struct _instanceData { + uchar *target; + uchar *port; + int sizeWindow; /**< the RELP window size - 0=use default */ + unsigned timeout; + int connTimeout; + unsigned rebindInterval; + sbool bEnableTLS; + sbool bEnableTLSZip; + sbool bHadAuthFail; /**< set on auth failure, will cause retry to disable action */ + uchar *pristring; /* GnuTLS priority string (NULL if not to be provided) */ + uchar *authmode; + uchar *caCertFile; + uchar *myCertFile; + uchar *myPrivKeyFile; +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + uchar *tlscfgcmd; +#endif + uchar *tplName; + uchar *localClientIP; + struct { + int nmemb; + uchar **name; + } permittedPeers; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + int bInitialConnect; /* is this the initial connection request of our module? (0-no, 1-yes) */ + int bIsConnected; /* currently connected to server? 0 - no, 1 - yes */ + int bIsSuspended; /* currently suspended (than no more error messages) */ + relpClt_t *pRelpClt; /* relp client for this instance */ + unsigned nSent; /* number msgs sent - for rebind support */ +} wrkrInstanceData_t; + +typedef struct configSettings_s { + EMPTY_STRUCT +} configSettings_t; +static configSettings_t __attribute__((unused)) cs; + +static rsRetVal doCreateRelpClient(instanceData *pData, relpClt_t **pRelpClt); + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + const char *tlslib; +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + +/* tables for interfacing with the v6 config system */ +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "tls.tlslib", eCmdHdlrString, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "target", eCmdHdlrGetWord, 1 }, + { "tls", eCmdHdlrBinary, 0 }, + { "tls.compression", eCmdHdlrBinary, 0 }, + { "tls.prioritystring", eCmdHdlrString, 0 }, + { "tls.cacert", eCmdHdlrString, 0 }, + { "tls.mycert", eCmdHdlrString, 0 }, + { "tls.myprivkey", eCmdHdlrString, 0 }, + { "tls.authmode", eCmdHdlrString, 0 }, + { "tls.tlscfgcmd", eCmdHdlrString, 0 }, + { "tls.permittedpeer", eCmdHdlrArray, 0 }, + { "port", eCmdHdlrGetWord, 0 }, + { "rebindinterval", eCmdHdlrInt, 0 }, + { "windowsize", eCmdHdlrInt, 0 }, + { "timeout", eCmdHdlrInt, 0 }, + { "conn.timeout", eCmdHdlrInt, 0 }, + { "localclientip", eCmdHdlrGetWord, 0 }, + { "template", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars +ENDinitConfVars + +/* We may change the implementation to try to lookup the port + * if it is unspecified. So far, we use 514 as default (what probably + * is not a really bright idea, but kept for backward compatibility). + */ + +PRAGMA_DIAGNOSTIC_PUSH +PRAGMA_IGNORE_Wformat_nonliteral +static void __attribute__((format(printf, 1, 2))) +omrelp_dbgprintf(const char *fmt, ...) +{ + va_list ap; + char pszWriteBuf[32*1024+1]; //this function has to be able to + /*generate a buffer longer than that of r_dbgprintf, so + r_dbgprintf can properly truncate*/ + if(!(Debug && debugging_on)) { + return; + } + + va_start(ap, fmt); + vsnprintf(pszWriteBuf, sizeof(pszWriteBuf), fmt, ap); + va_end(ap); + r_dbgprintf("omrelp.c", "%s", pszWriteBuf); +} +PRAGMA_DIAGNOSTIC_POP + + +static uchar *getRelpPt(instanceData *pData) +{ + assert(pData != NULL); + if(pData->port == NULL) + return((uchar*)RELP_DFLT_PT); + else + return(pData->port); +} + +static void +onErr(void *pUsr, char *objinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode) +{ + wrkrInstanceData_t *pWrkrData = (wrkrInstanceData_t*) pUsr; + LogError(0, RS_RET_RELP_AUTH_FAIL, "omrelp[%s:%s]: error '%s', object " + " '%s' - action may not work as intended", + pWrkrData->pData->target, pWrkrData->pData->port, errmesg, objinfo); +} + +static void +onGenericErr(char *objinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode) +{ + LogError(0, RS_RET_RELP_ERR, "omrelp: librelp error '%s', object " + "'%s' - action may not work as intended", + errmesg, objinfo); +} + +static void +onAuthErr(void *pUsr, char *authinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode) +{ + instanceData *pData = ((wrkrInstanceData_t*) pUsr)->pData; + LogError(0, RS_RET_RELP_AUTH_FAIL, "omrelp[%s:%s]: authentication error '%s', peer " + "is '%s' - DISABLING action", pData->target, pData->port, errmesg, authinfo); + pData->bHadAuthFail = 1; +} + +static rsRetVal +doCreateRelpClient(instanceData *pData, relpClt_t **pRelpClt) +{ + int i; + DEFiRet; + + if(relpEngineCltConstruct(pRelpEngine, pRelpClt) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + if(relpCltSetTimeout(*pRelpClt, pData->timeout) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + if(relpCltSetConnTimeout(*pRelpClt, pData->connTimeout) != RELP_RET_OK) { + ABORT_FINALIZE(RS_RET_RELP_ERR); + } + if(relpCltSetWindowSize(*pRelpClt, pData->sizeWindow) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + if(pData->bEnableTLS) { + if(relpCltEnableTLS(*pRelpClt) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + if(pData->bEnableTLSZip) { + if(relpCltEnableTLSZip(*pRelpClt) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + } + if(relpCltSetGnuTLSPriString(*pRelpClt, (char*) pData->pristring) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + + + if(relpCltSetAuthMode(*pRelpClt, (char*) pData->authmode) != RELP_RET_OK) { + LogError(0, RS_RET_RELP_ERR, + "omrelp: invalid auth mode '%s'\n", pData->authmode); + ABORT_FINALIZE(RS_RET_RELP_ERR); + } + + if(relpCltSetCACert(*pRelpClt, (char*) pData->caCertFile) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + if(relpCltSetOwnCert(*pRelpClt, (char*) pData->myCertFile) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + if(relpCltSetPrivKey(*pRelpClt, (char*) pData->myPrivKeyFile) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + if (pData->tlscfgcmd != NULL) { + if(relpCltSetTlsConfigCmd(*pRelpClt, (char*) pData->tlscfgcmd) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + } +#endif + for(i = 0 ; i < pData->permittedPeers.nmemb ; ++i) { + relpCltAddPermittedPeer(*pRelpClt, (char*)pData->permittedPeers.name[i]); + } + } + if(pData->localClientIP != NULL) { + if(relpCltSetClientIP(*pRelpClt, pData->localClientIP) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + } +finalize_it: + + RETiRet; +} + +BEGINendCnfLoad +CODESTARTendCnfLoad + loadModConf = NULL; + runModConf = pModConf; +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf + free((void*)pModConf->tlslib); +ENDfreeCnf + +BEGINcreateInstance +CODESTARTcreateInstance + pData->sizeWindow = 0; + pData->timeout = 90; + pData->connTimeout = 10; + pData->rebindInterval = 0; + pData->bEnableTLS = DFLT_ENABLE_TLS; + pData->bEnableTLSZip = DFLT_ENABLE_TLSZIP; + pData->bHadAuthFail = 0; + pData->pristring = NULL; + pData->authmode = NULL; + pData->localClientIP = NULL; + pData->caCertFile = NULL; + pData->myCertFile = NULL; + pData->myPrivKeyFile = NULL; +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + pData->tlscfgcmd = NULL; +#endif + pData->permittedPeers.nmemb = 0; +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pWrkrData->pRelpClt = NULL; + iRet = doCreateRelpClient(pWrkrData->pData, &pWrkrData->pRelpClt); + if(relpCltSetUsrPtr(pWrkrData->pRelpClt, pWrkrData) != RELP_RET_OK) + LogError(0, RS_RET_NO_ERRCODE, "omrelp: error when creating relp client"); + pWrkrData->bInitialConnect = 1; + pWrkrData->nSent = 0; +ENDcreateWrkrInstance + +BEGINfreeInstance + int i; +CODESTARTfreeInstance + free(pData->target); + free(pData->port); + free(pData->tplName); + free(pData->pristring); + free(pData->authmode); + free(pData->localClientIP); + free(pData->caCertFile); + free(pData->myCertFile); + free(pData->myPrivKeyFile); +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + free(pData->tlscfgcmd); +#endif + if(pData->permittedPeers.name != NULL) { + for(i = 0 ; i < pData->permittedPeers.nmemb ; ++i) { + free(pData->permittedPeers.name[i]); + } + } +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + if(pWrkrData->pRelpClt != NULL) + relpEngineCltDestruct(pRelpEngine, &pWrkrData->pRelpClt); +ENDfreeWrkrInstance + +static void +setInstParamDefaults(instanceData *pData) +{ + pData->target = NULL; + pData->port = NULL; + pData->tplName = NULL; + pData->timeout = 90; + pData->connTimeout = 10; + pData->sizeWindow = 0; + pData->rebindInterval = 0; + pData->bEnableTLS = DFLT_ENABLE_TLS; + pData->bEnableTLSZip = DFLT_ENABLE_TLSZIP; + pData->pristring = NULL; + pData->authmode = NULL; + if(glbl.GetSourceIPofLocalClient() == NULL) + pData->localClientIP = NULL; + else + pData->localClientIP = (uchar*)strdup((char*)glbl.GetSourceIPofLocalClient()); + pData->caCertFile = NULL; + pData->myCertFile = NULL; + pData->myPrivKeyFile = NULL; +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + pData->tlscfgcmd = NULL; +#endif + pData->permittedPeers.name = NULL; + pData->permittedPeers.nmemb = 0; +} + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->tlslib = NULL; + /* create our relp engine */ + CHKiRet(relpEngineConstruct(&pRelpEngine)); + CHKiRet(relpEngineSetDbgprint(pRelpEngine, (void (*)(char *, ...))omrelp_dbgprintf)); + CHKiRet(relpEngineSetOnAuthErr(pRelpEngine, onAuthErr)); + CHKiRet(relpEngineSetOnGenericErr(pRelpEngine, onGenericErr)); + CHKiRet(relpEngineSetOnErr(pRelpEngine, onErr)); + CHKiRet(relpEngineSetEnableCmd(pRelpEngine, (uchar*) "syslog", eRelpCmdState_Required)); +finalize_it: +ENDbeginCnfLoad + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + parser_errmsg("imrelp: error processing module config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for omrelp:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) { + continue; + } + if(!strcmp(modpblk.descr[i].name, "tls.tlslib")) { + #if defined(HAVE_RELPENGINESETTLSLIBBYNAME) + loadModConf->tlslib = es_str2cstr(pvals[i].val.d.estr, NULL); + if(relpEngineSetTLSLibByName(pRelpEngine, loadModConf->tlslib) != RELP_RET_OK) { + LogMsg(0, RS_RET_CONF_PARAM_INVLD, LOG_WARNING, + "omrelp: tlslib '%s' not accepted as valid by librelp - using default", + loadModConf->tlslib); + } + #else + LogError(0, RS_RET_NOT_IMPLEMENTED, + "omrelp warning: parameter tls.tlslib ignored - librelp does not support " + "this API call. Using whatever librelp was compiled with."); + #endif + } else { + dbgprintf("imfile: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +BEGINnewActInst + struct cnfparamvals *pvals; + int i,j; + FILE *fp; + relpClt_t *pRelpClt = NULL; +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "target")) { + pData->target = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "port")) { + pData->port = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "localclientip")) { + pData->localClientIP = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "timeout")) { + pData->timeout = (unsigned) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "conn.timeout")) { + pData->connTimeout = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "rebindinterval")) { + pData->rebindInterval = (unsigned) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "windowsize")) { + pData->sizeWindow = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "tls")) { + pData->bEnableTLS = (unsigned) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "tls.compression")) { + pData->bEnableTLSZip = (unsigned) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "tls.prioritystring")) { + pData->pristring = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "tls.cacert")) { + pData->caCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->caCertFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + pData->caCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "tls.mycert")) { + pData->myCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->myCertFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + pData->myCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "tls.myprivkey")) { + pData->myPrivKeyFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)pData->myPrivKeyFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + pData->myPrivKeyFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(actpblk.descr[i].name, "tls.tlscfgcmd")) { +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + pData->tlscfgcmd = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); +#else + LogError(0, RS_RET_NOT_IMPLEMENTED, "omrelp: librelp does not support input parameter " + "'tls.tlscfgcmd'; it probably is too old (1.5.0 or higher should be fine); " + "ignoring setting now."); +#endif + } else if(!strcmp(actpblk.descr[i].name, "tls.authmode")) { + pData->authmode = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "tls.permittedpeer")) { + pData->permittedPeers.nmemb = pvals[i].val.d.ar->nmemb; + CHKmalloc(pData->permittedPeers.name = + malloc(sizeof(uchar*) * pData->permittedPeers.nmemb)); + for(j = 0 ; j < pData->permittedPeers.nmemb ; ++j) { + pData->permittedPeers.name[j] = (uchar*)es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + } + } else { + dbgprintf("omrelp: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + CODE_STD_STRING_REQUESTnewActInst(1) + + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*)strdup((pData->tplName == NULL) ? + "RSYSLOG_ForwardFormat" : (char*)pData->tplName), + OMSR_NO_RQD_TPL_OPTS)); + + iRet = doCreateRelpClient(pData, &pRelpClt); + if(pRelpClt != NULL) + relpEngineCltDestruct(pRelpEngine, &pRelpClt); + +CODE_STD_FINALIZERnewActInst + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + +BEGINSetShutdownImmdtPtr +CODESTARTSetShutdownImmdtPtr + relpEngineSetShutdownImmdtPtr(pRelpEngine, pPtr); + DBGPRINTF("omrelp: shutdownImmediate ptr now is %p\n", pPtr); +ENDSetShutdownImmdtPtr + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + dbgprintf("RELP/%s", pData->target); +ENDdbgPrintInstInfo + + +/* try to connect to server + * rgerhards, 2008-03-21 + */ +static rsRetVal ATTR_NONNULL() +doConnect(wrkrInstanceData_t *const pWrkrData) +{ + DEFiRet; + + if(pWrkrData->bInitialConnect) { + iRet = relpCltConnect(pWrkrData->pRelpClt, glbl.GetDefPFFamily(runModConf->pConf), + getRelpPt(pWrkrData->pData), pWrkrData->pData->target); + if(iRet == RELP_RET_OK) + pWrkrData->bInitialConnect = 0; + } else { + iRet = relpCltReconnect(pWrkrData->pRelpClt); + } + + if(iRet == RELP_RET_OK) { + pWrkrData->bIsConnected = 1; + } else if(iRet == RELP_RET_ERR_NO_TLS) { + LogError(0, iRet, "omrelp: Could not connect, librelp does NOT " + "support TLS (most probably GnuTLS lib " + "is too old)!"); + FINALIZE; + } else if(iRet == RELP_RET_ERR_NO_TLS_AUTH) { + LogError(0, iRet, "omrelp: could not activate relp TLS with " + "authentication, librelp does not support it " + "(most probably GnuTLS lib is too old)! " + "Note: anonymous TLS is probably supported."); + FINALIZE; + } else { + if(pWrkrData->bIsSuspended == 0) { + LogError(0, RS_RET_RELP_ERR, "omrelp: could not connect to " + "remote server, librelp error %d", iRet); + } + pWrkrData->bIsConnected = 0; + pWrkrData->bIsSuspended = 1; + iRet = RS_RET_SUSPENDED; + } + +finalize_it: + RETiRet; +} + + +BEGINtryResume +CODESTARTtryResume + if(pWrkrData->pData->bHadAuthFail) { + ABORT_FINALIZE(RS_RET_DISABLE_ACTION); + } + iRet = doConnect(pWrkrData); +finalize_it: +ENDtryResume + +static rsRetVal +doRebind(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + DBGPRINTF("omrelp: destructing relp client due to rebindInterval\n"); + CHKiRet(relpEngineCltDestruct(pRelpEngine, &pWrkrData->pRelpClt)); + pWrkrData->bIsConnected = 0; + CHKiRet(doCreateRelpClient(pWrkrData->pData, &pWrkrData->pRelpClt)); + if(relpCltSetUsrPtr(pWrkrData->pRelpClt, pWrkrData) != RELP_RET_OK) + LogError(0, RS_RET_NO_ERRCODE, "omrelp: error when creating relp client"); + pWrkrData->bInitialConnect = 1; + pWrkrData->nSent = 0; +finalize_it: + RETiRet; +} + +BEGINbeginTransaction +CODESTARTbeginTransaction + DBGPRINTF("omrelp: beginTransaction\n"); + if(!pWrkrData->bIsConnected) { + CHKiRet(doConnect(pWrkrData)); + } + relpCltHintBurstBegin(pWrkrData->pRelpClt); +finalize_it: +ENDbeginTransaction + +BEGINdoAction + uchar *pMsg; /* temporary buffering */ + size_t lenMsg; + relpRetVal ret; + instanceData *pData; +CODESTARTdoAction + pData = pWrkrData->pData; + dbgprintf(" %s:%s/RELP\n", pData->target, getRelpPt(pData)); + + if(!pWrkrData->bIsConnected) { + CHKiRet(doConnect(pWrkrData)); + } + + pMsg = ppString[0]; + lenMsg = strlen((char*) pMsg); /* TODO: don't we get this? */ + + /* we need to truncate oversize msgs - no way around that... */ + if((int) lenMsg > glbl.GetMaxLine(runModConf->pConf)) + lenMsg = glbl.GetMaxLine(runModConf->pConf); + + /* forward */ + ret = relpCltSendSyslog(pWrkrData->pRelpClt, (uchar*) pMsg, lenMsg); + if(ret != RELP_RET_OK) { + LogError(0, RS_RET_RELP_ERR, "librelp error %d%s forwarding " + "to server %s:%s - suspending\n", ret, + (ret == RELP_RET_SESSION_BROKEN) ? + "[connection broken]" : "", + pData->target, getRelpPt(pData)); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + + if(pData->rebindInterval != 0 && + (++pWrkrData->nSent >= pData->rebindInterval)) { + doRebind(pWrkrData); + } +finalize_it: + if(pData->bHadAuthFail) + iRet = RS_RET_DISABLE_ACTION; + if(iRet == RS_RET_OK) { + /* we mimic non-commit, as otherwise our endTransaction handler + * will not get called. While this is not 100% correct, the worst + * that can happen is some message duplication, something that + * rsyslog generally accepts and prefers over message loss. + */ + iRet = RS_RET_PREVIOUS_COMMITTED; + } else if(iRet == RS_RET_SUSPENDED) { + pWrkrData->bIsSuspended = 1; + } +ENDdoAction + + +BEGINendTransaction +CODESTARTendTransaction + DBGPRINTF("omrelp: endTransaction, connected %d\n", pWrkrData->bIsConnected); + if(pWrkrData->bIsConnected) { + relpCltHintBurstEnd(pWrkrData->pRelpClt); + } +ENDendTransaction + +BEGINparseSelectorAct + uchar *q; + int i; + int bErr; +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + if(!strncmp((char*) p, ":omrelp:", sizeof(":omrelp:") - 1)) { + p += sizeof(":omrelp:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + } else { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + if((iRet = createInstance(&pData)) != RS_RET_OK) + FINALIZE; + + /* extract the host first (we do a trick - we replace the ';' or ':' with a '\0') + * now skip to port and then template name. rgerhards 2005-07-06 + */ + if(*p == '[') { /* everything is hostname upto ']' */ + ++p; /* skip '[' */ + for(q = p ; *p && *p != ']' ; ++p) + /* JUST SKIP */; + if(*p == ']') { + *p = '\0'; /* trick to obtain hostname (later)! */ + ++p; /* eat it */ + } + } else { /* traditional view of hostname */ + for(q = p ; *p && *p != ';' && *p != ':' && *p != '#' ; ++p) + /* JUST SKIP */; + } + + pData->port = NULL; + if(*p == ':') { /* process port */ + uchar * tmp; + + *p = '\0'; /* trick to obtain hostname (later)! */ + tmp = ++p; + for(i=0 ; *p && isdigit((int) *p) ; ++p, ++i) + /* SKIP AND COUNT */; + pData->port = malloc(i + 1); + if(pData->port == NULL) { + LogError(0, NO_ERRCODE, "Could not get memory to store relp port, " + "using default port, results may not be what you intend\n"); + /* we leave f_forw.port set to NULL, this is then handled by getRelpPt() */ + } else { + memcpy(pData->port, tmp, i); + *(pData->port + i) = '\0'; + } + } + + /* now skip to template */ + bErr = 0; + while(*p && *p != ';') { + if(*p && *p != ';' && !isspace((int) *p)) { + if(bErr == 0) { /* only 1 error msg! */ + bErr = 1; + errno = 0; + LogError(0, NO_ERRCODE, "invalid selector line (port), probably not doing " + "what was intended"); + } + } + ++p; + } + + if(*p == ';') { + *p = '\0'; /* trick to obtain hostname (later)! */ + CHKmalloc(pData->target = ustrdup(q)); + *p = ';'; + } else { + CHKmalloc(pData->target = ustrdup(q)); + } + + /* process template */ + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_NO_RQD_TPL_OPTS, (uchar*) "RSYSLOG_ForwardFormat")); + +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit + relpEngineDestruct(&pRelpEngine); + + /* release what we no longer need */ + objRelease(glbl, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_CNFNAME_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_TXIF_OMOD_QUERIES +CODEqueryEtryPt_SetShutdownImmdtPtr +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + /* tell which objects we need */ + CHKiRet(objUse(glbl, CORE_COMPONENT)); +ENDmodInit diff --git a/plugins/omruleset/Makefile.am b/plugins/omruleset/Makefile.am new file mode 100644 index 0000000..fdd91a6 --- /dev/null +++ b/plugins/omruleset/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = omruleset.la + +omruleset_la_SOURCES = omruleset.c +omruleset_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +omruleset_la_LDFLAGS = -module -avoid-version +omruleset_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/omruleset/Makefile.in b/plugins/omruleset/Makefile.in new file mode 100644 index 0000000..c559138 --- /dev/null +++ b/plugins/omruleset/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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It permits to pass a message object + * to another rule set. While this is a very simple action, it enables very + * complex configurations, e.g. it supports high-speed "and" conditions, sending + * data to the same file in a non-racy way, include functionality as well as + * some high-performance optimizations (in case the rule sets have the necessary + * queue definitions). So while this code is small, it is pretty important. + * + * NOTE: read comments in module-template.h for details on the calling interface! + * + * File begun on 2009-11-02 by RGerhards + * + * Copyright 2009-2016 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include "conf.h" +#include "syslogd-types.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "ruleset.h" +#include "cfsysline.h" +#include "dirty.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omruleset") + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + +/* static data */ +DEFobjCurrIf(ruleset); + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +/* config variables */ + + +typedef struct _instanceData { + ruleset_t *pRuleset; /* ruleset to enqueue to */ + uchar *pszRulesetName; /* primarily for debugging/display purposes */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +typedef struct configSettings_s { + ruleset_t *pRuleset; /* ruleset to enqueue message to (NULL = Default, not recommended) */ + uchar *pszRulesetName; +} configSettings_t; +static configSettings_t cs; + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + resetConfigVariables(NULL, NULL); +ENDinitConfVars + + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->pszRulesetName); +ENDfreeInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + dbgprintf("omruleset target %s[%p]\n", (char*) pData->pszRulesetName, pData->pRuleset); +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + +/* Note that we change the flow control type to "no delay", because at this point in + * rsyslog procesing we can not really slow down the producer any longer, as we already + * work off a queue. So a delay would just block out execution for longer than needed. + */ +BEGINdoAction_NoStrings + smsg_t **ppMsg = (smsg_t **) pMsgData; + smsg_t *pMsg; +CODESTARTdoAction + CHKmalloc(pMsg = MsgDup(ppMsg[0])); + DBGPRINTF(":omruleset: forwarding message %p to ruleset %s[%p]\n", pMsg, + (char*) pWrkrData->pData->pszRulesetName, pWrkrData->pData->pRuleset); + MsgSetFlowControlType(pMsg, eFLOWCTL_NO_DELAY); + MsgSetRuleset(pMsg, pWrkrData->pData->pRuleset); + /* Note: we intentionally use submitMsg2() here, as we process messages + * that were already run through the rate-limiter. So it is (at least) + * questionable if they were rate-limited again. + */ + submitMsg2(pMsg); +finalize_it: +ENDdoAction + +/* set the ruleset name */ +static rsRetVal +setRuleset(void __attribute__((unused)) *pVal, uchar *pszName) +{ + rsRetVal localRet; + DEFiRet; + + localRet = ruleset.GetRuleset(ourConf, &cs.pRuleset, pszName); + if(localRet == RS_RET_NOT_FOUND) { + LogError(0, RS_RET_RULESET_NOT_FOUND, "error: ruleset '%s' not found - ignored", pszName); + } + CHKiRet(localRet); + cs.pszRulesetName = pszName; /* save for later display purposes */ + +finalize_it: + if(iRet != RS_RET_OK) { /* cleanup needed? */ + free(pszName); + } + RETiRet; +} + + +BEGINparseSelectorAct + int iTplOpts; +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* first check if this config line is actually for us */ + if(strncmp((char*) p, ":omruleset:", sizeof(":omruleset:") - 1)) { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + if(cs.pRuleset == NULL) { + LogError(0, RS_RET_NO_RULESET, "error: no ruleset was specified, use " + "$ActionOmrulesetRulesetName directive first!"); + ABORT_FINALIZE(RS_RET_NO_RULESET); + } + + /* ok, if we reach this point, we have something for us */ + p += sizeof(":omruleset:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + CHKiRet(createInstance(&pData)); + + LogMsg(0, RS_RET_DEPRECATED, LOG_WARNING, + "warning: omruleset is deprecated, consider " + "using the 'call' statement instead"); + + /* check if a non-standard template is to be applied */ + if(*(p-1) == ';') + --p; + iTplOpts = OMSR_TPL_AS_MSG; + /* we call the message below because we need to call it via our interface definition. However, + * the format specified (if any) is always ignored. + */ + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, iTplOpts, (uchar*) "RSYSLOG_FileFormat")); + pData->pRuleset = cs.pRuleset; + pData->pszRulesetName = cs.pszRulesetName; + cs.pRuleset = NULL; +/* re-set, because there is a high risk of unwanted behavior if we leave it in! */ + cs.pszRulesetName = NULL; +/* note: we must not free, as we handed over this pointer to the instanceDat to the instanceDataa! */ +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit + free(cs.pszRulesetName); + objRelease(ruleset, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_CNFNAME_QUERIES +ENDqueryEtryPt + + + +/* Reset config variables for this module to default values. + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + cs.pRuleset = NULL; + free(cs.pszRulesetName); + cs.pszRulesetName = NULL; + RETiRet; +} + + +BEGINmodInit() + rsRetVal localRet; + rsRetVal (*pomsrGetSupportedTplOpts)(unsigned long *pOpts); + unsigned long opts; + int bMsgPassingSupported; /* does core support template passing as an array? */ +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + /* check if the rsyslog core supports parameter passing code */ + bMsgPassingSupported = 0; + localRet = pHostQueryEtryPt((uchar*)"OMSRgetSupportedTplOpts", &pomsrGetSupportedTplOpts); + if(localRet == RS_RET_OK) { + /* found entry point, so let's see if core supports msg passing */ + CHKiRet((*pomsrGetSupportedTplOpts)(&opts)); + if(opts & OMSR_TPL_AS_MSG) + bMsgPassingSupported = 1; + } else if(localRet != RS_RET_ENTRY_POINT_NOT_FOUND) { + ABORT_FINALIZE(localRet); /* Something else went wrong, what is not acceptable */ + } + + if(!bMsgPassingSupported) { + DBGPRINTF("omruleset: msg-passing is not supported by rsyslog core, can not continue.\n"); + ABORT_FINALIZE(RS_RET_NO_MSG_PASSING); + } + + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + + LogMsg(0, RS_RET_DEPRECATED, LOG_WARNING, + "warning: omruleset is deprecated, consider " + "using the 'call' statement instead"); + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionomrulesetrulesetname", 0, eCmdHdlrGetWord, + setRuleset, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit + +/* vi:set ai: + */ diff --git a/plugins/omsnmp/Makefile.am b/plugins/omsnmp/Makefile.am new file mode 100644 index 0000000..f75fb09 --- /dev/null +++ b/plugins/omsnmp/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = omsnmp.la + +omsnmp_la_SOURCES = omsnmp.c omsnmp.h +omsnmp_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +omsnmp_la_LDFLAGS = -module -avoid-version +omsnmp_la_LIBADD = $(SNMP_LIBS) diff --git a/plugins/omsnmp/Makefile.in b/plugins/omsnmp/Makefile.in new file mode 100644 index 0000000..10ab9b4 --- /dev/null +++ b/plugins/omsnmp/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omsnmp/omsnmp.c b/plugins/omsnmp/omsnmp.c new file mode 100644 index 0000000..fbf4dfe --- /dev/null +++ b/plugins/omsnmp/omsnmp.c @@ -0,0 +1,658 @@ +/* omsnmp.c + * + * This module sends an snmp trap. + * + * Copyright 2007-2018 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <netinet/in.h> +#include <sys/time.h> +#include <sys/socket.h> +#include <arpa/inet.h> +#include <netdb.h> +#include <ctype.h> +#include <assert.h> +#include "conf.h" +#include "syslogd-types.h" +#include "cfsysline.h" +#include "module-template.h" + +#include <net-snmp/net-snmp-config.h> +#include <net-snmp/net-snmp-includes.h> +#include "omsnmp.h" +#include "errmsg.h" +#include "parserif.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omsnmp") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +static oid objid_snmptrap[] = { 1, 3, 6, 1, 6, 3, 1, 1, 4, 1, 0 }; +static oid objid_sysuptime[] = { 1, 3, 6, 1, 2, 1, 1, 3, 0 }; + +/* 4 */ +#define SNMP_SOURCETEMPLATE "\"%fromhost-ip%\"" + + +typedef struct _instanceData { + uchar *szTransport; /* Transport - Can be udp, tcp, udp6, tcp6 and other types + supported by NET-SNMP */ + uchar *szTarget; /* IP/hostname of Snmp Target*/ + uchar *szCommunity; /* Snmp Community */ + uchar *szEnterpriseOID; /* Snmp Enterprise OID-default is (1.3.6.1.4.1.3.1.1 = enterprises.cmu.1.1) */ + uchar *szSnmpTrapOID; /* Snmp Trap OID - default is (1.3.6.1.4.1.19406.1.2.1 = + ADISCON-MONITORWARE-MIB::syslogtrap) */ + uchar *szSyslogMessageOID; /* Snmp OID used for the Syslog Message: + * default is 1.3.6.1.4.1.19406.1.1.2.1 - ADISCON-MONITORWARE-MIB::syslogMsg + * You will need the ADISCON-MONITORWARE-MIB and ADISCON-MIB mibs installed on the receiver + * side in order to decode this mib. + * Downloads of these mib files can be found here: + * http://www.adiscon.org/download/ADISCON-MONITORWARE-MIB.txt + * http://www.adiscon.org/download/ADISCON-MIB.txt + */ + uchar *szSnmpV1Source; /* If PDU source property needs to be overwritten, only valid for SNMPv1*/ + + int iPort; /* Target Port */ + int iSNMPVersion; /* SNMP Version to use */ + int iTrapType; /* Snmp TrapType or GenericType */ + int iSpecificType; /* Snmp Specific Type */ + + uchar *tplName; /* format template to use */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + netsnmp_session *snmpsession; /* Holds to SNMP Session, NULL if not initialized */ +} wrkrInstanceData_t; + +typedef struct configSettings_s { + uchar* pszTransport; /* default transport */ + uchar* pszTarget; + /* note using an unsigned for a port number is not a good idea from an IPv6 point of view */ + int iPort; + int iSNMPVersion; /* 0 Means SNMPv1, 1 Means SNMPv2c */ + uchar* pszCommunity; + uchar* pszEnterpriseOID; + uchar* pszSnmpTrapOID; + uchar* pszSyslogMessageOID; + + int iSpecificType; + int iTrapType; /*Default is SNMP_TRAP_ENTERPRISESPECIFIC */ + /* + Possible Values + SNMP_TRAP_COLDSTART (0) + SNMP_TRAP_WARMSTART (1) + SNMP_TRAP_LINKDOWN (2) + SNMP_TRAP_LINKUP (3) + SNMP_TRAP_AUTHFAIL (4) + SNMP_TRAP_EGPNEIGHBORLOSS (5) + SNMP_TRAP_ENTERPRISESPECIFIC (6) + */ +} configSettings_t; +static configSettings_t cs; + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "server", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "port", eCmdHdlrInt, 0 }, + { "transport", eCmdHdlrString, 0 }, + { "version", eCmdHdlrInt, 0 }, + { "community", eCmdHdlrString, 0 }, + { "enterpriseoid", eCmdHdlrString, 0 }, + { "trapoid", eCmdHdlrString, 0 }, + { "messageoid", eCmdHdlrString, 0 }, + { "snmpv1dynsource", eCmdHdlrString, 0 }, + { "traptype", eCmdHdlrInt, 0 }, + { "specifictype", eCmdHdlrInt, 0 }, + { "template", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + cs.pszTransport = NULL; + cs.pszTarget = NULL; + cs.iPort = 0; + cs.iSNMPVersion = 1; + cs.pszCommunity = NULL; + cs.pszEnterpriseOID = NULL; + cs.pszSnmpTrapOID = NULL; + cs.pszSyslogMessageOID = NULL; + cs.iSpecificType = 0; + cs.iTrapType = SNMP_TRAP_ENTERPRISESPECIFIC; +ENDinitConfVars + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pWrkrData->snmpsession = NULL; +ENDcreateWrkrInstance + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + dbgprintf("SNMPTransport: %s\n", pData->szTransport); + dbgprintf("SNMPTarget: %s\n", pData->szTarget); + dbgprintf("SNMPPort: %d\n", pData->iPort); + dbgprintf("SNMPVersion (0=v1, 1=v2c): %d\n", pData->iSNMPVersion); + dbgprintf("Community: %s\n", pData->szCommunity); + dbgprintf("EnterpriseOID: %s\n", pData->szEnterpriseOID); + dbgprintf("SnmpTrapOID: %s\n", pData->szSnmpTrapOID); + dbgprintf("SyslogMessageOID: %s\n", pData->szSyslogMessageOID); + dbgprintf("SnmpV1Source: %s\n", pData->szSnmpV1Source); + dbgprintf("TrapType: %d\n", pData->iTrapType); + dbgprintf("SpecificType: %d\n", pData->iSpecificType); +ENDdbgPrintInstInfo + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + /* we are not compatible with repeated msg reduction feature, so do not allow it */ +ENDisCompatibleWithFeature + +/* Exit SNMP Session + * alorbach, 2008-02-12 + */ +static rsRetVal +omsnmp_exitSession(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + + if(pWrkrData->snmpsession != NULL) { + DBGPRINTF("omsnmp_exitSession: Clearing Session to '%s' on Port = '%d'\n", + pWrkrData->pData->szTarget, pWrkrData->pData->iPort); + snmp_close(pWrkrData->snmpsession); + pWrkrData->snmpsession = NULL; + } + + RETiRet; +} + +/* Init SNMP Session + * alorbach, 2008-02-12 + */ +static rsRetVal +omsnmp_initSession(wrkrInstanceData_t *pWrkrData) +{ + netsnmp_session session; + instanceData *pData; + char szTargetAndPort[MAXHOSTNAMELEN+128]; /* work buffer for specifying a full target and port string */ + DEFiRet; + + /* should not happen, but if session is not cleared yet - we do it now! */ + if (pWrkrData->snmpsession != NULL) + omsnmp_exitSession(pWrkrData); + + pData = pWrkrData->pData; + + snprintf((char*)szTargetAndPort, sizeof(szTargetAndPort), "%s:%s:%d", + (pData->szTransport == NULL) ? "udp" : (char*)pData->szTransport, + pData->szTarget, pData->iPort == 0 ? 162 : pData->iPort); + + dbgprintf( "omsnmp_initSession: ENTER - Target = '%s' on Port = '%d'\n", pData->szTarget, pData->iPort); + + if (setenv("POSIXLY_CORRECT", "1", 1) == -1) + ABORT_FINALIZE(RS_RET_ERR); + + snmp_sess_init(&session); + session.version = pData->iSNMPVersion; + session.callback = NULL; /* NOT NEEDED */ + session.callback_magic = NULL; + session.peername = (char*) szTargetAndPort; + + /* Set SNMP Community */ + if (session.version == SNMP_VERSION_1 || session.version == SNMP_VERSION_2c) { + session.community = (unsigned char *) pData->szCommunity + == NULL ? (uchar*)"public" : pData->szCommunity; + session.community_len = strlen((char*) session.community); + } + + pWrkrData->snmpsession = snmp_open(&session); + if (pWrkrData->snmpsession == NULL) { + LogError(0, RS_RET_SUSPENDED, "omsnmp_initSession: snmp_open to host '%s' on Port '%d' " + "failed\n", pData->szTarget, pData->iPort); + /* Stay suspended */ + iRet = RS_RET_SUSPENDED; + } + +finalize_it: + RETiRet; +} + +static rsRetVal omsnmp_sendsnmp(wrkrInstanceData_t *pWrkrData, uchar *psz, uchar *pszSource) +{ + DEFiRet; + + netsnmp_pdu *pdu = NULL; + oid enterpriseoid[MAX_OID_LEN]; + size_t enterpriseoidlen = MAX_OID_LEN; + oid oidSyslogMessage[MAX_OID_LEN]; + size_t oLen = MAX_OID_LEN; + int status; + char *trap = NULL; + const char *strErr = NULL; + struct sockaddr_in srcAddr; + instanceData *pData; + + pData = pWrkrData->pData; + /* Init SNMP Session if necessary */ + if (pWrkrData->snmpsession == NULL) { + CHKiRet(omsnmp_initSession(pWrkrData)); + } + + /* String should not be NULL */ + assert(psz != NULL); + dbgprintf( "omsnmp_sendsnmp: ENTER - Syslogmessage = '%s'\n", (char*)psz); + + /* If SNMP Version1 is configured !*/ + if(pWrkrData->snmpsession->version == SNMP_VERSION_1) { + dbgprintf( "omsnmp_sendsnmp: Create SNMPv1 Trap - Source = '%s'\n", (char*)pszSource); + pdu = snmp_pdu_create(SNMP_MSG_TRAP); + + /* Set enterprise */ + if(!snmp_parse_oid(pData->szEnterpriseOID == NULL ? "1.3.6.1.4.1.3.1.1" : + (char*)pData->szEnterpriseOID, enterpriseoid, &enterpriseoidlen )) { + strErr = snmp_api_errstring(snmp_errno); + LogError(0, RS_RET_DISABLE_ACTION, "omsnmp_sendsnmp: Parsing EnterpriseOID " + "failed '%s' with error '%s' \n", pData->szSyslogMessageOID, strErr); + ABORT_FINALIZE(RS_RET_DISABLE_ACTION); + } + CHKmalloc(pdu->enterprise = (oid *) malloc(enterpriseoidlen * sizeof(oid))); + memcpy(pdu->enterprise, enterpriseoid, enterpriseoidlen * sizeof(oid)); + pdu->enterprise_length = enterpriseoidlen; + + /* Set Traptype */ + pdu->trap_type = pData->iTrapType; + + /* Set SpecificType */ + pdu->specific_type = pData->iSpecificType; + + /* Set Updtime */ + pdu->time = get_uptime(); + + /* Set PDU SOurce property if available */ + if (pszSource != NULL) { + if (inet_aton((const char *)pszSource, &srcAddr.sin_addr) != 0) { + pdu->agent_addr[0] = (srcAddr.sin_addr.s_addr) & 0xFF; + pdu->agent_addr[1] = (srcAddr.sin_addr.s_addr >> 8) & 0xFF; + pdu->agent_addr[2] = (srcAddr.sin_addr.s_addr >> 16) & 0xFF; + pdu->agent_addr[3] = (srcAddr.sin_addr.s_addr >> 24) & 0xFF; + dbgprintf( "omsnmp_sendsnmp: SNMPv1 Source Property set to %d.%d.%d.%d\n", + (srcAddr.sin_addr.s_addr) & 0xFF, + (srcAddr.sin_addr.s_addr >> 8) & 0xFF, + (srcAddr.sin_addr.s_addr >> 16) & 0xFF, + (srcAddr.sin_addr.s_addr >> 24) & 0xFF); + } else { + LogError(0, NO_ERRCODE, "omsnmp_sendsnmp: Failed to convert '%s' into a valid IPv4" + "address\n", pszSource); + } + } + } + /* If SNMP Version2c is configured !*/ + else if (pWrkrData->snmpsession->version == SNMP_VERSION_2c) + { + long sysuptime; + char csysuptime[20]; + dbgprintf( "omsnmp_sendsnmp: Create SNMPv2 Trap\n"); + + /* Create PDU */ + pdu = snmp_pdu_create(SNMP_MSG_TRAP2); + + /* Set uptime */ + sysuptime = get_uptime(); + snprintf( csysuptime, sizeof(csysuptime) , "%ld", sysuptime); + trap = csysuptime; + snmp_add_var(pdu, objid_sysuptime, sizeof(objid_sysuptime) / sizeof(oid), 't', trap); + + /* Now set the SyslogMessage Trap OID */ + if ( snmp_add_var(pdu, objid_snmptrap, sizeof(objid_snmptrap) / sizeof(oid), 'o', + pData->szSnmpTrapOID == NULL ? "1.3.6.1.4.1.19406.1.2.1" : (char*) pData->szSnmpTrapOID + ) != 0) { + strErr = snmp_api_errstring(snmp_errno); + LogError(0, RS_RET_DISABLE_ACTION, "omsnmp_sendsnmp: Adding trap OID failed '%s' " + "with error '%s' \n", pData->szSnmpTrapOID, strErr); + ABORT_FINALIZE(RS_RET_DISABLE_ACTION); + } + } + + /* SET TRAP PARAMETER for SyslogMessage! */ + + /* First create new OID object */ + if (snmp_parse_oid(pData->szSyslogMessageOID == NULL ? + "1.3.6.1.4.1.19406.1.1.2.1" : (char*)pData->szSyslogMessageOID, + oidSyslogMessage, &oLen)) { + int iErrCode = snmp_add_var(pdu, oidSyslogMessage, oLen, 's', (char*) psz); + if (iErrCode) { + const char *str = snmp_api_errstring(iErrCode); + LogError(0, RS_RET_DISABLE_ACTION, "omsnmp_sendsnmp: Invalid SyslogMessage OID, " + "error code '%d' - '%s'\n", iErrCode, str ); + ABORT_FINALIZE(RS_RET_DISABLE_ACTION); + } + } else { + strErr = snmp_api_errstring(snmp_errno); + LogError(0, RS_RET_DISABLE_ACTION, "omsnmp_sendsnmp: Parsing SyslogMessageOID failed '%s' " + "with error '%s' \n", pData->szSyslogMessageOID, strErr); + + ABORT_FINALIZE(RS_RET_DISABLE_ACTION); + } + + /* Send the TRAP */ + status = snmp_send(pWrkrData->snmpsession, pdu) == 0; + if (status) + { + /* Debug Output! */ + int iErrorCode = pWrkrData->snmpsession->s_snmp_errno; + LogError(0, RS_RET_SUSPENDED, "omsnmp_sendsnmp: snmp_send failed error '%d', " + "Description='%s'\n", iErrorCode*(-1), api_errors[iErrorCode*(-1)]); + + /* Clear Session */ + omsnmp_exitSession(pWrkrData); + + ABORT_FINALIZE(RS_RET_SUSPENDED); + } else { + dbgprintf( "omsnmp_sendsnmp: Successfully send SNMP Trap to %s:%d\n", + pData->szTarget, pData->iPort); + } + +finalize_it: + if(iRet != RS_RET_OK) { + if(pdu != NULL) { + snmp_free_pdu(pdu); + } + } + + dbgprintf( "omsnmp_sendsnmp: LEAVE\n"); + RETiRet; +} + + +BEGINtryResume +CODESTARTtryResume + iRet = omsnmp_initSession(pWrkrData); +ENDtryResume + +BEGINdoAction +CODESTARTdoAction + /* Abort if the STRING is not set, should never happen */ + if (ppString[0] == NULL) { + ABORT_FINALIZE(RS_RET_INVALID_PARAMS); + } + + /* This will generate and send the SNMP Trap */ + iRet = omsnmp_sendsnmp(pWrkrData, ppString[0], ppString[1]); +finalize_it: +ENDdoAction + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->tplName); + free(pData->szTarget); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + omsnmp_exitSession(pWrkrData); +ENDfreeWrkrInstance + +static void +setInstParamDefaults(instanceData *pData) +{ + pData->tplName = NULL; + pData->szCommunity = NULL; + pData->szEnterpriseOID = NULL; + pData->szSnmpTrapOID = NULL; + pData->szSyslogMessageOID = NULL; + pData->szSnmpV1Source = NULL; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; +CODESTARTnewActInst + if((pvals = nvlstGetParams(lst, &actpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + CODE_STD_STRING_REQUESTnewActInst(2) + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "server")) { + pData->szTarget = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "port")) { + pData->iPort = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "transport")) { + pData->szTransport = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "version")) { + pData->iSNMPVersion = pvals[i].val.d.n; + if(pData->iSNMPVersion < 0 || cs.iSNMPVersion > 1) + pData->iSNMPVersion = 1; + } else if(!strcmp(actpblk.descr[i].name, "community")) { + pData->szCommunity = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "enterpriseoid")) { + pData->szEnterpriseOID = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "trapoid")) { + pData->szSnmpTrapOID = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "messageoid")) { + pData->szSyslogMessageOID = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "snmpv1dynsource")) { + pData->szSnmpV1Source = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "traptype")) { + pData->iTrapType = pvals[i].val.d.n; + if(cs.iTrapType < 0 || cs.iTrapType > 6) { + parser_errmsg("omsnmp: traptype invalid, setting to ENTERPRISESPECIFIC"); + pData->iTrapType = SNMP_TRAP_ENTERPRISESPECIFIC; + } + } else if(!strcmp(actpblk.descr[i].name, "specifictype")) { + pData->iSpecificType = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("ompipe: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + /* Init NetSNMP library and read in MIB database */ + init_snmp("rsyslog"); + + /* Set some defaults in the NetSNMP library */ + netsnmp_ds_set_int(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_DEFAULT_PORT, pData->iPort ); + + CHKiRet(OMSRsetEntry(*ppOMSR, 0, (uchar*)strdup((pData->tplName == NULL) ? + "RSYSLOG_FileFormat" : (char*)pData->tplName), + OMSR_NO_RQD_TPL_OPTS)); + + CHKiRet(OMSRsetEntry(*ppOMSR, 1, (uchar*)strdup((pData->szSnmpV1Source == NULL) ? + " SNMP_SOURCETEMPLATE" : (char*)pData->szSnmpV1Source), + OMSR_NO_RQD_TPL_OPTS)); + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINparseSelectorAct +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + if(!strncmp((char*) p, ":omsnmp:", sizeof(":omsnmp:") - 1)) { + p += sizeof(":omsnmp:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + } else { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + if((iRet = createInstance(&pData)) != RS_RET_OK) + FINALIZE; + + /* Check Target */ + if(cs.pszTarget == NULL) { + ABORT_FINALIZE( RS_RET_PARAM_ERROR ); + } else { + CHKmalloc(pData->szTarget = (uchar*) strdup((char*)cs.pszTarget)); + } + + /* copy config params */ + pData->szTransport = (uchar*) ((cs.pszTransport == NULL) ? NULL : strdup((char*)cs.pszTransport)); + pData->szCommunity = (uchar*) ((cs.pszCommunity == NULL) ? NULL : strdup((char*)cs.pszCommunity)); + pData->szEnterpriseOID = (uchar*) ((cs.pszEnterpriseOID == NULL) ? NULL : strdup((char*)cs.pszEnterpriseOID)); + pData->szSnmpTrapOID = (uchar*) ((cs.pszSnmpTrapOID == NULL) ? NULL : strdup((char*)cs.pszSnmpTrapOID)); + pData->szSyslogMessageOID = (uchar*) ((cs.pszSyslogMessageOID == NULL) ? NULL : + strdup((char*)cs.pszSyslogMessageOID)); + pData->iPort = cs.iPort; + pData->iSpecificType = cs.iSpecificType; + + /* Set SNMPVersion */ + if ( cs.iSNMPVersion < 0 || cs.iSNMPVersion > 1) /* Set default to 1 if out of range */ + pData->iSNMPVersion = 1; + else + pData->iSNMPVersion = cs.iSNMPVersion; + + /* Copy TrapType */ + if ( cs.iTrapType < 0 || cs.iTrapType >= 6) /* Only allow values from 0 to 6 !*/ + pData->iTrapType = SNMP_TRAP_ENTERPRISESPECIFIC; + else + pData->iTrapType = cs.iTrapType; + + /* Print Debug info */ + dbgprintf("SNMPTransport: %s\n", pData->szTransport); + dbgprintf("SNMPTarget: %s\n", pData->szTarget); + dbgprintf("SNMPPort: %d\n", pData->iPort); + dbgprintf("SNMPVersion (0=v1, 1=v2c): %d\n", pData->iSNMPVersion); + dbgprintf("Community: %s\n", pData->szCommunity); + dbgprintf("EnterpriseOID: %s\n", pData->szEnterpriseOID); + dbgprintf("SnmpTrapOID: %s\n", pData->szSnmpTrapOID); + dbgprintf("SyslogMessageOID: %s\n", pData->szSyslogMessageOID); + dbgprintf("SnmpV1Source: %s\n", pData->szSnmpV1Source); + dbgprintf("TrapType: %d\n", pData->iTrapType); + dbgprintf("SpecificType: %d\n", pData->iSpecificType); + + /* process template */ + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_NO_RQD_TPL_OPTS, + (uchar*) "RSYSLOG_TraditionalForwardFormat")); + + /* Init NetSNMP library and read in MIB database */ + init_snmp("rsyslog"); + + /* Set some defaults in the NetSNMP library */ + netsnmp_ds_set_int(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_DEFAULT_PORT, pData->iPort ); +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +/* Reset config variables for this module to default values. + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + free(cs.pszTarget); + cs.pszTarget = NULL; + free(cs.pszCommunity); + cs.pszCommunity = NULL; + free(cs.pszEnterpriseOID); + cs.pszEnterpriseOID = NULL; + free(cs.pszSnmpTrapOID); + cs.pszSnmpTrapOID = NULL; + free(cs.pszSyslogMessageOID); + cs.pszSyslogMessageOID = NULL; + cs.iPort = 0; + cs.iSNMPVersion = 1; + cs.iSpecificType = 0; + cs.iTrapType = SNMP_TRAP_ENTERPRISESPECIFIC; + RETiRet; +} + + +BEGINmodExit +CODESTARTmodExit + free(cs.pszTarget); + free(cs.pszCommunity); + free(cs.pszEnterpriseOID); + free(cs.pszSnmpTrapOID); + free(cs.pszSyslogMessageOID); + + /* release what we no longer need */ +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_CNFNAME_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + uchar *pTmp; + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + initConfVars(); + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionsnmptransport", 0, eCmdHdlrGetWord, NULL, &cs.pszTransport, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionsnmptarget", 0, eCmdHdlrGetWord, NULL, &cs.pszTarget, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionsnmptargetport", 0, eCmdHdlrInt, NULL, &cs.iPort, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionsnmpversion", 0, eCmdHdlrInt, NULL, &cs.iSNMPVersion, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionsnmpcommunity", 0, eCmdHdlrGetWord, NULL, &cs.pszCommunity, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionsnmpenterpriseoid", 0, eCmdHdlrGetWord, NULL, + &cs.pszEnterpriseOID, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionsnmptrapoid", 0, eCmdHdlrGetWord, NULL, &cs.pszSnmpTrapOID, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionsnmpsyslogmessageoid", 0, eCmdHdlrGetWord, NULL, + &cs.pszSyslogMessageOID, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionsnmpspecifictype", 0, eCmdHdlrInt, NULL, &cs.iSpecificType, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionsnmptraptype", 0, eCmdHdlrInt, NULL, &cs.iTrapType, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); + + DBGPRINTF("omsnmp: Add SNMP_SOURCETEMPLATE to template system ONCE\n"); + pTmp = (uchar*) SNMP_SOURCETEMPLATE; + tplAddLine(ourConf, " SNMP_SOURCETEMPLATE", &pTmp); +ENDmodInit +/* + * vi:set ai: + */ diff --git a/plugins/omsnmp/omsnmp.h b/plugins/omsnmp/omsnmp.h new file mode 100644 index 0000000..dcb1537 --- /dev/null +++ b/plugins/omsnmp/omsnmp.h @@ -0,0 +1,104 @@ +/* omsnmp.h + * These are the definitions for the build-in MySQL output module. + * + * Copyright 2007-2012 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef OMSNMP_H_INCLUDED +#define OMSNMP_H_INCLUDED 1 + +#define OMSNMP_MAXTRANSPORLENGTH 10 +#define OMSNMP_MAXPORTLENGTH 5 +#define OMSNMP_MAXCOMMUNITYLENGTH 255 +#define OMSNMP_MAXOIDLENGTH 255 + + +#endif /* #ifndef OMMYSQL_H_INCLUDED */ +/* + * vi:set ai: + */ + +#include <net-snmp/library/snmp_api.h> + +static const char *api_errors[-SNMPERR_MAX + 1] = { + "No error", /* SNMPERR_SUCCESS */ + "Generic error", /* SNMPERR_GENERR */ + "Invalid local port", /* SNMPERR_BAD_LOCPORT */ + "Unknown host", /* SNMPERR_BAD_ADDRESS */ + "Unknown session", /* SNMPERR_BAD_SESSION */ + "Too long", /* SNMPERR_TOO_LONG */ + "No socket", /* SNMPERR_NO_SOCKET */ + "Cannot send V2 PDU on V1 session", /* SNMPERR_V2_IN_V1 */ + "Cannot send V1 PDU on V2 session", /* SNMPERR_V1_IN_V2 */ + "Bad value for non-repeaters", /* SNMPERR_BAD_REPEATERS */ + "Bad value for max-repetitions", /* SNMPERR_BAD_REPETITIONS */ + "Error building ASN.1 representation", /* SNMPERR_BAD_ASN1_BUILD */ + "Failure in sendto", /* SNMPERR_BAD_SENDTO */ + "Bad parse of ASN.1 type", /* SNMPERR_BAD_PARSE */ + "Bad version specified", /* SNMPERR_BAD_VERSION */ + "Bad source party specified", /* SNMPERR_BAD_SRC_PARTY */ + "Bad destination party specified", /* SNMPERR_BAD_DST_PARTY */ + "Bad context specified", /* SNMPERR_BAD_CONTEXT */ + "Bad community specified", /* SNMPERR_BAD_COMMUNITY */ + "Cannot send noAuth/Priv", /* SNMPERR_NOAUTH_DESPRIV */ + "Bad ACL definition", /* SNMPERR_BAD_ACL */ + "Bad Party definition", /* SNMPERR_BAD_PARTY */ + "Session abort failure", /* SNMPERR_ABORT */ + "Unknown PDU type", /* SNMPERR_UNKNOWN_PDU */ + "Timeout", /* SNMPERR_TIMEOUT */ + "Failure in recvfrom", /* SNMPERR_BAD_RECVFROM */ + "Unable to determine contextEngineID", /* SNMPERR_BAD_ENG_ID */ + "No securityName specified", /* SNMPERR_BAD_SEC_NAME */ + "Unable to determine securityLevel", /* SNMPERR_BAD_SEC_LEVEL */ + "ASN.1 parse error in message", /* SNMPERR_ASN_PARSE_ERR */ + "Unknown security model in message", /* SNMPERR_UNKNOWN_SEC_MODEL */ + "Invalid message (e.g. msgFlags)", /* SNMPERR_INVALID_MSG */ + "Unknown engine ID", /* SNMPERR_UNKNOWN_ENG_ID */ + "Unknown user name", /* SNMPERR_UNKNOWN_USER_NAME */ + "Unsupported security level", /* SNMPERR_UNSUPPORTED_SEC_LEVEL */ + "Authentication failure (incorrect password, community or key)", /* SNMPERR_AUTHENTICATION_FAILURE */ + "Not in time window", /* SNMPERR_NOT_IN_TIME_WINDOW */ + "Decryption error", /* SNMPERR_DECRYPTION_ERR */ + "SCAPI general failure", /* SNMPERR_SC_GENERAL_FAILURE */ + "SCAPI sub-system not configured", /* SNMPERR_SC_NOT_CONFIGURED */ + "Key tools not available", /* SNMPERR_KT_NOT_AVAILABLE */ + "Unknown Report message", /* SNMPERR_UNKNOWN_REPORT */ + "USM generic error", /* SNMPERR_USM_GENERICERROR */ + "USM unknown security name (no such user exists)", /* SNMPERR_USM_UNKNOWNSECURITYNAME */ + "USM unsupported security level (this user has not been configured for that level of security)", + /* SNMPERR_USM_UNSUPPORTEDSECURITYLEVEL */ + "USM encryption error", /* SNMPERR_USM_ENCRYPTIONERROR */ + "USM authentication failure (incorrect password or key)", /* SNMPERR_USM_AUTHENTICATIONFAILURE */ + "USM parse error", /* SNMPERR_USM_PARSEERROR */ + "USM unknown engineID", /* SNMPERR_USM_UNKNOWNENGINEID */ + "USM not in time window", /* SNMPERR_USM_NOTINTIMEWINDOW */ + "USM decryption error", /* SNMPERR_USM_DECRYPTIONERROR */ + "MIB not initialized", /* SNMPERR_NOMIB */ + "Value out of range", /* SNMPERR_RANGE */ + "Sub-id out of range", /* SNMPERR_MAX_SUBID */ + "Bad sub-id in object identifier", /* SNMPERR_BAD_SUBID */ + "Object identifier too long", /* SNMPERR_LONG_OID */ + "Bad value name", /* SNMPERR_BAD_NAME */ + "Bad value notation", /* SNMPERR_VALUE */ + "Unknown Object Identifier", /* SNMPERR_UNKNOWN_OBJID */ + "No PDU in snmp_send", /* SNMPERR_NULL_PDU */ + "Missing variables in PDU", /* SNMPERR_NO_VARS */ + "Bad variable type", /* SNMPERR_VAR_TYPE */ + "Out of memory (malloc failure)", /* SNMPERR_MALLOC */ + "Kerberos related error", /* SNMPERR_KRB5 */ +}; diff --git a/plugins/omstdout/Makefile.am b/plugins/omstdout/Makefile.am new file mode 100644 index 0000000..9f5d497 --- /dev/null +++ b/plugins/omstdout/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = omstdout.la + +omstdout_la_SOURCES = omstdout.c +omstdout_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +omstdout_la_LDFLAGS = -module -avoid-version +omstdout_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/omstdout/Makefile.in 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install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omstdout/omstdout.c b/plugins/omstdout/omstdout.c new file mode 100644 index 0000000..776e0b6 --- /dev/null +++ b/plugins/omstdout/omstdout.c @@ -0,0 +1,372 @@ +/* omstdout.c + * send all output to stdout - this is primarily a test driver (but may + * be used for weired use cases). Not tested for robustness! + * + * NOTE: read comments in module-template.h for more specifics! + * + * File begun on 2009-03-19 by RGerhards + * + * Copyright 2009-2017 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "cfsysline.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omstdout") + +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + +/* static data */ + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +/* config variables */ + +typedef struct _instanceData { + int bUseArrayInterface; /* uses action use array instead of string template interface? */ + int bEnsureLFEnding; /* ensure that a linefeed is written at the end of EACH + record (test aid for nettester) */ + uchar *templateName; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +typedef struct configSettings_s { + int bUseArrayInterface; /* shall action use array instead of string template interface? */ + int bEnsureLFEnding; + int templateName; +} configSettings_t; +static configSettings_t cs; + +/* tables for interfacing with the v6 config system */ +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "ensurelfending", eCmdHdlrBinary, 0 }, + { "template", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + + + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + resetConfigVariables(NULL, NULL); +ENDinitConfVars + +BEGINcreateInstance +CODESTARTcreateInstance +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad + loadModConf = NULL; /* done loading */ +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + dbgprintf("omstdout\n"); + dbgprintf("\tensureLFEnding='%d'\n", pData->bEnsureLFEnding); + dbgprintf("\ttemplate='%s'\n", pData->templateName); +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + +BEGINdoAction + char **szParams; + char *toWrite; + int iParamVal; + int iParam; + int iBuf; + char szBuf[65564]; + size_t len; + int r; +CODESTARTdoAction +dbgprintf("omstdout: in doAction\n"); + if(pWrkrData->pData->bUseArrayInterface) { +dbgprintf("omstdout: in ArrayInterface\n"); + /* if we use array passing, we need to put together a string + * ourselves. At this point, please keep in mind that omstdout is + * primarily a testing aid. Other modules may do different processing + * if they would like to support downlevel versions which do not support + * array-passing, but also use that interface on cores who do... + * So this code here is also more or less an example of how to do that. + * rgerhards, 2009-04-03 + */ + szParams = (char**)(void*) (ppString[0]); + /* In array-passing mode, ppString[] contains a NULL-terminated array + * of char *pointers. + */ + iParam = 0; + iBuf = 0; + while(szParams[iParam] != NULL && iBuf < (int)sizeof(szBuf)-1) { + if(iParam > 0) + szBuf[iBuf++] = ','; /* all but first need a delimiter */ + iParamVal = 0; + while(szParams[iParam][iParamVal] != '\0' && iBuf < (int) sizeof(szBuf)-1) { + szBuf[iBuf++] = szParams[iParam][iParamVal++]; + } + ++iParam; + } + szBuf[iBuf] = '\0'; + toWrite = szBuf; + } else { +dbgprintf("omstdout: in else\n"); + toWrite = (char*) ppString[0]; + } + len = strlen(toWrite); + /* the following if's are just to silence compiler warnings. If someone + * actually intends to use this module in production (why???), this code + * needs to be more solid. -- rgerhards, 2012-11-28 + */ +dbgprintf("omstdout: len: %d, toWrite: %s\n", (int) len, toWrite); + if((r = write(1, toWrite, len)) != (int) len) { /* 1 is stdout! */ + DBGPRINTF("omstdout: error %d writing to stdout[%zd]: %s\n", + r, len, toWrite); + } + if(pWrkrData->pData->bEnsureLFEnding && toWrite[len-1] != '\n') { + if((r = write(1, "\n", 1)) != 1) { /* write missing LF */ + DBGPRINTF("omstdout: error %d writing \\n to stdout\n", + r); + } + } +ENDdoAction + +static void +setInstParamDefaults(instanceData *pData) +{ + pData->bEnsureLFEnding = 1; + pData->templateName = (uchar*) "RSYSLOG_FileFormat"; + pData->bUseArrayInterface = 0; +} + + +BEGINnewActInst + struct cnfparamvals *pvals; + int i; + int bDestructPValsOnExit; + uchar *tplToUse; +CODESTARTnewActInst + DBGPRINTF("newActInst (omstdout)\n"); + + bDestructPValsOnExit = 0; + pvals = nvlstGetParams(lst, &actpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "omstdout: error reading " + "config parameters"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + bDestructPValsOnExit = 1; + + if(Debug) { + dbgprintf("action param blk in omstdout:\n"); + cnfparamsPrint(&actpblk, pvals); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) { + continue; + } else if(!strcmp(actpblk.descr[i].name, "ensurelfending")) { + pData->bEnsureLFEnding = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->templateName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + DBGPRINTF("omstdout: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + + CODE_STD_STRING_REQUESTnewActInst(1) + //TODO: make the template a parameter + tplToUse = (uchar*) strdup((pData->templateName == NULL) ? "RSYSLOG_FileFormat" : (char *)pData->templateName); + CHKiRet(OMSRsetEntry(*ppOMSR, 0, tplToUse, OMSR_NO_RQD_TPL_OPTS)); +CODE_STD_FINALIZERnewActInst + if(bDestructPValsOnExit) + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + + +BEGINparseSelectorAct + int iTplOpts; +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* first check if this config line is actually for us */ + if(strncmp((char*) p, ":omstdout:", sizeof(":omstdout:") - 1)) { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + p += sizeof(":omstdout:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + CHKiRet(createInstance(&pData)); + + /* check if a non-standard template is to be applied */ + if(*(p-1) == ';') + --p; + iTplOpts = (cs.bUseArrayInterface == 0) ? 0 : OMSR_TPL_AS_ARRAY; + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, iTplOpts, (uchar*) "RSYSLOG_FileFormat")); + pData->bUseArrayInterface = cs.bUseArrayInterface; + pData->bEnsureLFEnding = cs.bEnsureLFEnding; +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_CNFNAME_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +ENDqueryEtryPt + + + +/* Reset config variables for this module to default values. + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + DEFiRet; + cs.bUseArrayInterface = 0; + cs.bEnsureLFEnding = 1; + RETiRet; +} + + +BEGINmodInit() + rsRetVal localRet; + rsRetVal (*pomsrGetSupportedTplOpts)(unsigned long *pOpts); + unsigned long opts; + int bArrayPassingSupported; /* does core support template passing as an array? */ +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + /* check if the rsyslog core supports parameter passing code */ + bArrayPassingSupported = 0; + localRet = pHostQueryEtryPt((uchar*)"OMSRgetSupportedTplOpts", &pomsrGetSupportedTplOpts); + if(localRet == RS_RET_OK) { + /* found entry point, so let's see if core supports array passing */ + CHKiRet((*pomsrGetSupportedTplOpts)(&opts)); + if(opts & OMSR_TPL_AS_ARRAY) + bArrayPassingSupported = 1; + } else if(localRet != RS_RET_ENTRY_POINT_NOT_FOUND) { + ABORT_FINALIZE(localRet); /* Something else went wrong, what is not acceptable */ + } + DBGPRINTF("omstdout: array-passing is %ssupported by rsyslog core.\n", bArrayPassingSupported ? "" : "not "); + + if(bArrayPassingSupported) { + /* enable config comand only if core supports it */ + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionomstdoutarrayinterface", 0, eCmdHdlrBinary, NULL, + &cs.bUseArrayInterface, STD_LOADABLE_MODULE_ID)); + } + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionomstdoutensurelfending", 0, eCmdHdlrBinary, NULL, + &cs.bEnsureLFEnding, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit + +/* vi:set ai: + */ diff --git a/plugins/omtesting/Makefile.am b/plugins/omtesting/Makefile.am new file mode 100644 index 0000000..e35c471 --- /dev/null +++ b/plugins/omtesting/Makefile.am @@ -0,0 +1,11 @@ +pkglib_LTLIBRARIES = omtesting.la + +omtesting_la_SOURCES = omtesting.c +omtesting_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) +omtesting_la_LDFLAGS = -module -avoid-version +omtesting_la_LIBADD = + +if ENABLE_LIBLOGGING_STDLOG +omtesting_la_CPPFLAGS += $(LIBLOGGING_STDLOG_CFLAGS) +omtesting_la_LDFLAGS += $(LIBLOGGING_STDLOG_LIBS) +endif diff --git a/plugins/omtesting/Makefile.in b/plugins/omtesting/Makefile.in new file mode 100644 index 0000000..a48429f --- /dev/null +++ b/plugins/omtesting/Makefile.in @@ -0,0 +1,799 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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It is not meant to be used in production. I have + * initially written it to introduce delays of custom length to action processing. + * This is needed for development of new message queueing methods. However, I think + * there are other uses for this module. For example, I can envision that it is a good + * thing to have an output module that requests a retry on every "n"th invocation + * and such things. I implement only what I need. But should further testing needs + * arise, it makes much sense to add them here. + * + * This module will become part of the CVS and the rsyslog project because I think + * it is a generally useful debugging, testing and development aid for everyone + * involved with rsyslog. + * + * CURRENT SUPPORTED COMMANDS: + * + * :omtesting:sleep <seconds> <microseconds> + * + * Must be specified exactly as above. Keep in mind microseconds are a millionth + * of a second! + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * Copyright 2007-2017 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <time.h> +#include <string.h> +#include <ctype.h> +#include <assert.h> +#include <pthread.h> +#include "dirty.h" +#include "syslogd-types.h" +#include "module-template.h" +#include "conf.h" +#include "cfsysline.h" +#include "srUtils.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omtesting") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA + +typedef struct _instanceData { + enum { MD_SLEEP, MD_FAIL, MD_RANDFAIL, MD_ALWAYS_SUSPEND } + mode; + int bEchoStdout; + int iWaitSeconds; + int iWaitUSeconds; /* micro-seconds (one millionth of a second, just to make sure...) */ + int iCurrCallNbr; + int iFailFrequency; + int iResumeAfter; + int iCurrRetries; + int bFailed; /* indicates if we are already in failed state - this is necessary + * to work properly together with multiple worker instances. + */ + pthread_mutex_t mut; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +typedef struct configSettings_s { + int bEchoStdout; /* echo non-failed messages to stdout */ +} configSettings_t; +static configSettings_t cs; + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + cs.bEchoStdout = 0; +ENDinitConfVars + +BEGINcreateInstance +CODESTARTcreateInstance + pData->iWaitSeconds = 1; + pData->iWaitUSeconds = 0; + pthread_mutex_init(&pData->mut, NULL); +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + dbgprintf("Action delays rule by %d second(s) and %d microsecond(s)\n", + pData->iWaitSeconds, pData->iWaitUSeconds); + /* do nothing */ +ENDdbgPrintInstInfo + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + /* we are not compatible with repeated msg reduction feature, so do not allow it */ +ENDisCompatibleWithFeature + + +/* implement "fail" command in retry processing */ +static rsRetVal doFailOnResume(instanceData *pData) +{ + DEFiRet; + + dbgprintf("fail retry curr %d, max %d\n", pData->iCurrRetries, pData->iResumeAfter); + if(++pData->iCurrRetries == pData->iResumeAfter) { + iRet = RS_RET_OK; + pData->bFailed = 0; + } else { + iRet = RS_RET_SUSPENDED; + } + + RETiRet; +} + + +/* implement "fail" command */ +static rsRetVal doFail(instanceData *pData) +{ + DEFiRet; + + dbgprintf("fail curr %d, frequency %d, bFailed %d\n", pData->iCurrCallNbr, + pData->iFailFrequency, pData->bFailed); + if(pData->bFailed) { + ABORT_FINALIZE(RS_RET_SUSPENDED); + } else { + if(pData->iCurrCallNbr++ % pData->iFailFrequency == 0) { + pData->iCurrRetries = 0; + pData->bFailed = 1; + iRet = RS_RET_SUSPENDED; + } + } +finalize_it: + RETiRet; +} + + +/* implement "sleep" command */ +static rsRetVal doSleep(instanceData *pData) +{ + DEFiRet; + struct timeval tvSelectTimeout; + + dbgprintf("sleep(%d, %d)\n", pData->iWaitSeconds, pData->iWaitUSeconds); + tvSelectTimeout.tv_sec = pData->iWaitSeconds; + tvSelectTimeout.tv_usec = pData->iWaitUSeconds; /* microseconds */ + select(0, NULL, NULL, NULL, &tvSelectTimeout); + RETiRet; +} + + +/* implement "randomfail" command */ +static rsRetVal doRandFail(void) +{ + DEFiRet; + if((randomNumber() >> 4) < (RAND_MAX >> 5)) { /* rougly same probability */ + iRet = RS_RET_OK; + dbgprintf("omtesting randfail: succeeded this time\n"); + } else { + iRet = RS_RET_SUSPENDED; + dbgprintf("omtesting randfail: failed this time\n"); + } + RETiRet; +} + + +BEGINtryResume +CODESTARTtryResume + dbgprintf("omtesting tryResume() called\n"); + pthread_mutex_lock(&pWrkrData->pData->mut); + switch(pWrkrData->pData->mode) { + case MD_SLEEP: + break; + case MD_FAIL: + iRet = doFailOnResume(pWrkrData->pData); + break; + case MD_RANDFAIL: + iRet = doRandFail(); + break; + case MD_ALWAYS_SUSPEND: + iRet = RS_RET_SUSPENDED; + } + pthread_mutex_unlock(&pWrkrData->pData->mut); + dbgprintf("omtesting tryResume() returns iRet %d\n", iRet); +ENDtryResume + + +BEGINdoAction + instanceData *pData; +CODESTARTdoAction + dbgprintf("omtesting received msg '%s'\n", ppString[0]); + pData = pWrkrData->pData; + pthread_mutex_lock(&pData->mut); + switch(pData->mode) { + case MD_SLEEP: + iRet = doSleep(pData); + break; + case MD_FAIL: + iRet = doFail(pData); + break; + case MD_RANDFAIL: + iRet = doRandFail(); + break; + case MD_ALWAYS_SUSPEND: + iRet = RS_RET_SUSPENDED; + break; + } + + if(iRet == RS_RET_OK && pData->bEchoStdout) { + fprintf(stdout, "%s", ppString[0]); + fflush(stdout); + } + pthread_mutex_unlock(&pData->mut); + dbgprintf(":omtesting: end doAction(), iRet %d\n", iRet); +ENDdoAction + + +BEGINfreeInstance +CODESTARTfreeInstance + pthread_mutex_destroy(&pData->mut); +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINparseSelectorAct + int i; + uchar szBuf[1024]; +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + /* code here is quick and dirty - if you like, clean it up. But keep + * in mind it is just a testing aid ;) -- rgerhards, 2007-12-31 + */ + if(!strncmp((char*) p, ":omtesting:", sizeof(":omtesting:") - 1)) { + p += sizeof(":omtesting:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + } else { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + if((iRet = createInstance(&pData)) != RS_RET_OK) + goto finalize_it; + + /* check mode */ + for(i = 0 ; *p && !isspace((char) *p) && ((unsigned) i < sizeof(szBuf) - 1) ; ++i) { + szBuf[i] = (uchar) *p++; + } + szBuf[i] = '\0'; + if(isspace(*p)) + ++p; + + dbgprintf("omtesting command: '%s'\n", szBuf); + if(!strcmp((char*) szBuf, "sleep")) { + /* parse seconds */ + for(i = 0 ; *p && !isspace(*p) && ((unsigned) i < sizeof(szBuf) - 1) ; ++i) { + szBuf[i] = *p++; + } + szBuf[i] = '\0'; + if(isspace(*p)) + ++p; + pData->iWaitSeconds = atoi((char*) szBuf); + /* parse microseconds */ + for(i = 0 ; *p && !isspace(*p) && ((unsigned) i < sizeof(szBuf) - 1) ; ++i) { + szBuf[i] = *p++; + } + szBuf[i] = '\0'; + if(isspace(*p)) + ++p; + pData->iWaitUSeconds = atoi((char*) szBuf); + pData->mode = MD_SLEEP; + } else if(!strcmp((char*) szBuf, "fail")) { + /* "fail fail-freqency resume-after" + * fail-frequency specifies how often doAction() fails + * resume-after speicifes how fast tryResume() should come back with success + * all numbers being "times called" + */ + /* parse fail-frequence */ + for(i = 0 ; *p && !isspace(*p) && ((unsigned) i < sizeof(szBuf) - 1) ; ++i) { + szBuf[i] = *p++; + } + szBuf[i] = '\0'; + if(isspace(*p)) + ++p; + pData->iFailFrequency = atoi((char*) szBuf); + /* parse resume-after */ + for(i = 0 ; *p && !isspace(*p) && ((unsigned) i < sizeof(szBuf) - 1) ; ++i) { + szBuf[i] = *p++; + } + szBuf[i] = '\0'; + if(isspace(*p)) + ++p; + pData->iResumeAfter = atoi((char*) szBuf); + pData->iCurrCallNbr = 1; + pData->mode = MD_FAIL; + } else if(!strcmp((char*) szBuf, "randfail")) { + pData->mode = MD_RANDFAIL; + } else if(!strcmp((char*) szBuf, "always_suspend")) { + pData->mode = MD_ALWAYS_SUSPEND; + } else { + dbgprintf("invalid mode '%s', doing 'sleep 1 0' - fix your config\n", szBuf); + } + + pData->bEchoStdout = cs.bEchoStdout; + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_NO_RQD_TPL_OPTS, + (uchar*)"RSYSLOG_TraditionalForwardFormat")); + +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_CNFNAME_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionomtestingechostdout", 0, eCmdHdlrBinary, NULL, + &cs.bEchoStdout, STD_LOADABLE_MODULE_ID)); + /* we seed the random-number generator in any case... */ + srand(time(NULL)); +ENDmodInit +/* + * vi:set ai: + */ diff --git a/plugins/omudpspoof/Makefile.am b/plugins/omudpspoof/Makefile.am new file mode 100644 index 0000000..79c495a --- /dev/null +++ b/plugins/omudpspoof/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = omudpspoof.la + +omudpspoof_la_SOURCES = omudpspoof.c +omudpspoof_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) $(UDPSPOOF_CFLAGS) +omudpspoof_la_LDFLAGS = -module -avoid-version +omudpspoof_la_LIBADD = $(UDPSPOOF_LIBS) + +EXTRA_DIST = diff --git a/plugins/omudpspoof/Makefile.in b/plugins/omudpspoof/Makefile.in new file mode 100644 index 0000000..3babfc7 --- /dev/null +++ b/plugins/omudpspoof/Makefile.in @@ -0,0 +1,798 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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I then created a "real" rsyslog module + * out of that code and omfwd. I decided to make it a separate module because + * omfwd already mixes up too many things (TCP & UDP & a different modes, + * this has historic reasons), it would not be a good idea to also add + * spoofing to it. And, looking at the requirements, there is little in + * common between omfwd and this module. + * + * Note: I have briefly checked libnet source code and I somewhat have the feeling + * that under some circumstances we may get into trouble with the lib. For + * example, it registers an atexit() handler, which should not play nicely + * with our dynamically loaded modules. Anyhow, I refrain from looking deeper + * at libnet code, especially as testing does not show any real issues. If some + * occur, it may be easier to modify libnet for dynamic load environments than + * using a work-around (as a side not, libnet looks somewhat unmaintained, the CVS + * I can see on sourceforge dates has no updates done less than 7 years ago). + * On the other hand, it looks like libnet is thread safe (at least is appropriately + * compiled, which I hope the standard packages are). So I do not guard calls to + * it with my own mutex calls. + * rgerhards, 2009-07-10 + * + * Copyright 2009 David Lang (spoofing code) + * Copyright 2009-2016 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Rsyslog is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Rsyslog is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Rsyslog. If not, see <http://www.gnu.org/licenses/>. + * + * A copy of the GPL can be found in the file "COPYING" in this distribution. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <netinet/in.h> +#include <netdb.h> +#include <fnmatch.h> +#include <assert.h> +#include <errno.h> +#include <ctype.h> +#include <unistd.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "net.h" +#include "template.h" +#include "msg.h" +#include "cfsysline.h" +#include "module-template.h" +#include "glbl.h" +#include "errmsg.h" +#include "dirty.h" +#include "unicode-helper.h" +#include "debug.h" + + +#include <libnet.h> +#define _BSD_SOURCE 1 +#define __BSD_SOURCE 1 +#define __FAVOR_BSD 1 + + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omudpspoof") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(net) + +typedef struct _instanceData { + uchar *tplName; /* name of assigned template */ + uchar *host; + uchar *port; + uchar *sourceTpl; + int mtu; + u_short sourcePortStart; /* for sorce port iteration */ + u_short sourcePortEnd; + int bReportLibnetInitErr; /* help prevent multiple error messages on init err */ +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; + libnet_t *libnet_handle; + u_short sourcePort; + int *pSockArray; /* sockets to use for UDP */ + struct addrinfo *f_addr; + char errbuf[LIBNET_ERRBUF_SIZE]; +} wrkrInstanceData_t; + +#define DFLT_SOURCE_PORT_START 32000 +#define DFLT_SOURCE_PORT_END 42000 + +typedef struct configSettings_s { + uchar *tplName; /* name of the default template to use */ + uchar *pszSourceNameTemplate; /* name of the template containing the spoofing address */ + uchar *pszTargetHost; + uchar *pszTargetPort; + int iSourcePortStart; + int iSourcePortEnd; +} configSettings_t; +static configSettings_t cs; + +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "target", eCmdHdlrGetWord, 1 }, + { "port", eCmdHdlrGetWord, 0 }, + { "sourcetemplate", eCmdHdlrGetWord, 0 }, + { "sourceport.start", eCmdHdlrInt, 0 }, + { "sourceport.end", eCmdHdlrInt, 0 }, + { "mtu", eCmdHdlrInt, 0 }, + { "template", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "template", eCmdHdlrGetWord, 0 }, +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + uchar *tplName; /* default template */ +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + cs.tplName = NULL; + cs.pszSourceNameTemplate = NULL; + cs.pszTargetHost = NULL; + cs.pszTargetPort = NULL; + cs.iSourcePortStart = DFLT_SOURCE_PORT_START; + cs.iSourcePortEnd = DFLT_SOURCE_PORT_END; +ENDinitConfVars + + +/* add some variables needed for libnet */ +pthread_mutex_t mutLibnet; + +/* forward definitions */ +static rsRetVal doTryResume(wrkrInstanceData_t *pWrkrData); + +/* this function gets the default template. It coordinates action between + * old-style and new-style configuration parts. + */ +static uchar* +getDfltTpl(void) +{ + if(loadModConf != NULL && loadModConf->tplName != NULL) + return loadModConf->tplName; + else if(cs.tplName == NULL) + return (uchar*)"RSYSLOG_TraditionalForwardFormat"; + else + return cs.tplName; +} + + +/* set the default template to be used + * This is a module-global parameter, and as such needs special handling. It needs to + * be coordinated with values set via the v2 config system (rsyslog v6+). What we do + * is we do not permit this directive after the v2 config system has been used to set + * the parameter. + */ +static rsRetVal +setLegacyDfltTpl(void __attribute__((unused)) *pVal, uchar* newVal) +{ + DEFiRet; + + if(loadModConf != NULL && loadModConf->tplName != NULL) { + free(newVal); + LogError(0, RS_RET_ERR, "omudpspoof default template already set via module " + "global parameter - can no longer be changed"); + ABORT_FINALIZE(RS_RET_ERR); + } + free(cs.tplName); + cs.tplName = newVal; +finalize_it: + RETiRet; +} + +/* Close the UDP sockets. + * rgerhards, 2009-05-29 + */ +static rsRetVal +closeUDPSockets(wrkrInstanceData_t *pWrkrData) +{ + DEFiRet; + if(pWrkrData->pSockArray != NULL) { + net.closeUDPListenSockets(pWrkrData->pSockArray); + pWrkrData->pSockArray = NULL; + freeaddrinfo(pWrkrData->f_addr); + pWrkrData->f_addr = NULL; + } + RETiRet; +} + + +/* get the syslog forward port + * We may change the implementation to try to lookup the port + * if it is unspecified. So far, we use the IANA default auf 514. + * rgerhards, 2007-06-28 + */ +static inline uchar *getFwdPt(instanceData *pData) +{ + return (pData->port == NULL) ? UCHAR_CONSTANT("514") : pData->port; +} + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->tplName = NULL; +ENDbeginCnfLoad + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for omudpspoof:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "template")) { + loadModConf->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + if(cs.tplName != NULL) { + LogError(0, RS_RET_DUP_PARAM, "omudpspoof: warning: default template " + "was already set via legacy directive - may lead to inconsistent " + "results."); + } + } else { + dbgprintf("omudpspoof: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +BEGINendCnfLoad +CODESTARTendCnfLoad + loadModConf = NULL; /* done loading */ + /* free legacy config vars */ + free(cs.tplName); + cs.tplName = NULL; +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf + free(pModConf->tplName); +ENDfreeCnf + + +BEGINcreateInstance +CODESTARTcreateInstance + pData->mtu = 1500; + pData->bReportLibnetInitErr = 1; +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance + pWrkrData->libnet_handle = NULL; + pWrkrData->sourcePort = pData->sourcePortStart; +ENDcreateWrkrInstance + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + /* final cleanup */ + free(pData->tplName); + free(pData->port); + free(pData->host); + free(pData->sourceTpl); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance + closeUDPSockets(pWrkrData); + if(pWrkrData->libnet_handle != NULL) + libnet_destroy(pWrkrData->libnet_handle); +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + DBGPRINTF("%s", pData->host); +ENDdbgPrintInstInfo + + +/* Send a message via UDP + * Note: libnet is not thread-safe, so we need to ensure that only one + * instance ever is calling libnet code. + * rgehards, 2007-12-20 + */ +#ifdef __GNUC__ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-align" +#endif +static rsRetVal +UDPSend(wrkrInstanceData_t *pWrkrData, uchar *pszSourcename, char *msg, size_t len) +{ + struct addrinfo *r; + int lsent = 0; + int bSendSuccess; + instanceData *pData; + struct sockaddr_in *tempaddr,source_ip; + libnet_ptag_t ip; + libnet_ptag_t udp; + sbool bNeedUnlock = 0; + /* hdrOffs = fragmentation flags + offset (in bytes) + * divided by 8 */ + unsigned msgOffs, hdrOffs; + unsigned maxPktLen, pktLen, udpPktLen; + uint16_t ip_id; + DEFiRet; + + if(pWrkrData->pSockArray == NULL) { + CHKiRet(doTryResume(pWrkrData)); + } + pData = pWrkrData->pData; + + if(len > 65528) { + DBGPRINTF("omudpspoof: msg with length %d truncated to 64k: '%.768s'\n", + (int) len, msg); + len = 65528; + } + + ip = udp = 0; + if(pWrkrData->sourcePort++ >= pData->sourcePortEnd){ + pWrkrData->sourcePort = pData->sourcePortStart; + } + + /* We need a non-zero id number for the IP headers, + * otherwise libnet will increase it after each + * build_ipv4, breaking the fragments */ + ip_id = (uint16_t)libnet_get_prand(LIBNET_PR16); + + inet_pton(AF_INET, (char*)pszSourcename, &(source_ip.sin_addr)); + bSendSuccess = RSFALSE; + d_pthread_mutex_lock(&mutLibnet); + bNeedUnlock = 1; + for (r = pWrkrData->f_addr; r && bSendSuccess == RSFALSE ; r = r->ai_next) { + tempaddr = (struct sockaddr_in *)r->ai_addr; + /* Getting max payload size (must be multiple of 8) */ + maxPktLen = (pData->mtu - LIBNET_IPV4_H) & ~0x07; + msgOffs = 0; + /* We're doing (payload size - UDP header size) and not + * checking if it's a multiple of 8 because we know the + * header is 8 bytes long */ + if(len > (maxPktLen - LIBNET_UDP_H) ) { + hdrOffs = IP_MF; + pktLen = maxPktLen - LIBNET_UDP_H; + udpPktLen = len; + } else { + hdrOffs = 0; + pktLen = len; + udpPktLen = len; + } + DBGPRINTF("omudpspoof: stage 1: MF:%d, msgOffs %d, hdrOffs %d, pktLen %d, udpPktLen %d, maxPktLen %d\n", + (hdrOffs & IP_MF) >> 13, (hdrOffs & 0x1FFF) << 3, hdrOffs, pktLen, udpPktLen, maxPktLen); + libnet_clear_packet(pWrkrData->libnet_handle); + + /* note: libnet does need ports in host order NOT in network byte order! -- rgerhards, 2009-11-12 */ + udp = libnet_build_udp( + pWrkrData->sourcePort, /* source port */ + ntohs(tempaddr->sin_port), /* destination port */ + udpPktLen+LIBNET_UDP_H, /* packet length - use the FULL UDP Packet Length here */ + 0, /* checksum */ + (u_char*)msg, /* payload */ + pktLen, /* payload size */ + pWrkrData->libnet_handle, /* libnet handle */ + udp); /* libnet id */ + if (udp == -1) { + DBGPRINTF("omudpspoof: can't build UDP header: %s\n", + libnet_geterror(pWrkrData->libnet_handle)); + } + + ip = libnet_build_ipv4( + LIBNET_IPV4_H+LIBNET_UDP_H+pktLen, /* length */ + 0, /* TOS */ + ip_id, /* IP ID */ + hdrOffs, /* IP Frag */ + 64, /* TTL */ + IPPROTO_UDP, /* protocol */ + 0, /* checksum */ + source_ip.sin_addr.s_addr, + tempaddr->sin_addr.s_addr, + NULL, /* payload */ + 0, /* payload size */ + pWrkrData->libnet_handle, /* libnet handle */ + ip); /* libnet id */ + if (ip == -1) { + DBGPRINTF("omudpspoof: can't build IP header: %s\n", + libnet_geterror(pWrkrData->libnet_handle)); + } + + // Disable UDP Checksum CALC if Packjet exceeds MTU + if(len > (maxPktLen - LIBNET_UDP_H) ) { + libnet_toggle_checksum(pWrkrData->libnet_handle, udp, 1); + } + /* Write it to the wire. */ + lsent = libnet_write(pWrkrData->libnet_handle); + if(lsent != (int) (LIBNET_IPV4_H+LIBNET_UDP_H+pktLen)) { + /* note: access to fd is a libnet internal. If a newer version of libnet does + * not expose that member, we should simply remove it. However, while it is there + * it is useful for consolidating with strace output. + */ + DBGPRINTF("omudpspoof: write error (total len %d): pktLen %d, sent %d, fd %d: %s\n", + (int) len, LIBNET_IPV4_H+LIBNET_UDP_H+pktLen, lsent, pWrkrData->libnet_handle->fd, + libnet_geterror(pWrkrData->libnet_handle)); + if(lsent != -1) { + bSendSuccess = RSTRUE; + } + } else { + bSendSuccess = RSTRUE; + } + msgOffs += pktLen; + + /* We need to get rid of the UDP header to build the other fragments */ + libnet_clear_packet(pWrkrData->libnet_handle); + ip = LIBNET_PTAG_INITIALIZER; + while(len > msgOffs ) { /* loop until all payload is sent */ + /* check if there will be more fragments */ + if((len - msgOffs) > maxPktLen) { + /* In IP's eyes, the UDP header in the first packet + * needs to be in the offset, so we add its size to + * the payload offset here */ + hdrOffs = IP_MF + (msgOffs + LIBNET_UDP_H)/8; + pktLen = maxPktLen; + } else { + /* See above */ + hdrOffs = (msgOffs + LIBNET_UDP_H)/8; + pktLen = len - msgOffs; + } + DBGPRINTF("omudpspoof: stage 2: MF:%d, hdrOffs %d, pktLen %d\n", + (hdrOffs & IP_MF) >> 13, (hdrOffs & 0x1FFF) << 3, pktLen); + ip = libnet_build_ipv4( + LIBNET_IPV4_H + pktLen, /* length */ + 0, /* TOS */ + ip_id, /* IP ID */ + hdrOffs, /* IP Frag */ + 64, /* TTL */ + IPPROTO_UDP, /* protocol */ + 0, /* checksum */ + source_ip.sin_addr.s_addr, + tempaddr->sin_addr.s_addr, + (uint8_t*)(msg+msgOffs), /* payload */ + pktLen, /* payload size */ + pWrkrData->libnet_handle, /* libnet handle */ + ip); /* libnet id */ + if (ip == -1) { + DBGPRINTF("omudpspoof: can't build IP fragment header: %s\n", + libnet_geterror(pWrkrData->libnet_handle)); + } + /* Write it to the wire. */ + lsent = libnet_write(pWrkrData->libnet_handle); + if(lsent != (int) (LIBNET_IPV4_H+pktLen)) { + DBGPRINTF("omudpspoof: fragment write error len %d, sent %d: %s\n", + (int) (LIBNET_IPV4_H+LIBNET_UDP_H+len), lsent, + libnet_geterror(pWrkrData->libnet_handle)); + bSendSuccess = RSFALSE; + continue; + } + msgOffs += pktLen; + } + } + +finalize_it: + if(iRet != RS_RET_OK) { + if(pWrkrData->libnet_handle != NULL) { + libnet_destroy(pWrkrData->libnet_handle); + pWrkrData->libnet_handle = NULL; + } + } + if(bNeedUnlock) { + d_pthread_mutex_unlock(&mutLibnet); + } + RETiRet; +} +#ifdef _GNUC__ +#pragma GCC diagnostic pop +#endif + +/* try to resume connection if it is not ready + * rgerhards, 2007-08-02 + */ +static rsRetVal doTryResume(wrkrInstanceData_t *pWrkrData) +{ + int iErr; + struct addrinfo *res; + struct addrinfo hints; + instanceData *pData; + DEFiRet; + + if(pWrkrData->pSockArray != NULL) + FINALIZE; + pData = pWrkrData->pData; + + if(pWrkrData->libnet_handle == NULL) { + /* Initialize the libnet library. Root priviledges are required. + * this initializes a IPv4 socket to use for forging UDP packets. + */ + pWrkrData->libnet_handle = libnet_init( + LIBNET_RAW4, /* injection type */ + NULL, /* network interface */ + pWrkrData->errbuf); /* errbuf */ + + if(pWrkrData->libnet_handle == NULL) { + if(pData->bReportLibnetInitErr) { + LogError(0, RS_RET_ERR_LIBNET_INIT, "omudpsoof: error " + "initializing libnet - are you running as root?"); + pData->bReportLibnetInitErr = 0; + } + ABORT_FINALIZE(RS_RET_ERR_LIBNET_INIT); + } + } + DBGPRINTF("omudpspoof: libnit_init() ok\n"); + pData->bReportLibnetInitErr = 1; + + /* The remote address is not yet known and needs to be obtained */ + DBGPRINTF("omudpspoof trying resume for '%s'\n", pData->host); + memset(&hints, 0, sizeof(hints)); + /* port must be numeric, because config file syntax requires this */ + hints.ai_flags = AI_NUMERICSERV; + hints.ai_family = glbl.GetDefPFFamily(runModConf->pConf); + hints.ai_socktype = SOCK_DGRAM; + if((iErr = (getaddrinfo((char*)pData->host, (char*)getFwdPt(pData), &hints, &res))) != 0) { + DBGPRINTF("could not get addrinfo for hostname '%s':'%s': %d%s\n", + pData->host, getFwdPt(pData), iErr, gai_strerror(iErr)); + ABORT_FINALIZE(RS_RET_SUSPENDED); + } + DBGPRINTF("%s found, resuming.\n", pData->host); + pWrkrData->f_addr = res; + pWrkrData->pSockArray = net.create_udp_socket((uchar*)pData->host, NULL, 0, 0, 0, 0, NULL); + +finalize_it: + if(iRet != RS_RET_OK) { + if(pWrkrData->f_addr != NULL) { + freeaddrinfo(pWrkrData->f_addr); + pWrkrData->f_addr = NULL; + } + iRet = RS_RET_SUSPENDED; + } + + RETiRet; +} + +BEGINtryResume +CODESTARTtryResume + iRet = doTryResume(pWrkrData); +ENDtryResume + +BEGINdoAction + char *psz; /* temporary buffering */ + unsigned l; + int iMaxLine; +CODESTARTdoAction + CHKiRet(doTryResume(pWrkrData)); + + DBGPRINTF(" %s:%s/omudpspoof, src '%s', msg strt '%.256s'\n", pWrkrData->pData->host, + getFwdPt(pWrkrData->pData), ppString[1], ppString[0]); + + iMaxLine = glbl.GetMaxLine(runModConf->pConf); + psz = (char*) ppString[0]; + l = strlen((char*) psz); + if((int) l > iMaxLine) + l = iMaxLine; + + CHKiRet(UDPSend(pWrkrData, ppString[1], psz, l)); + +finalize_it: +ENDdoAction + + +static void +setInstParamDefaults(instanceData *pData) +{ + pData->tplName = NULL; + pData->sourcePortStart = DFLT_SOURCE_PORT_START; + pData->sourcePortEnd = DFLT_SOURCE_PORT_END; + pData->host = NULL; + pData->port = NULL; + pData->sourceTpl = (uchar*) strdup("RSYSLOG_omudpspoofDfltSourceTpl"); + pData->mtu = 1500; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + uchar *tplToUse; + int i; +CODESTARTnewActInst + DBGPRINTF("newActInst (omudpspoof)\n"); + + pvals = nvlstGetParams(lst, &actpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "omudpspoof: mandatory " + "parameters missing"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("action param blk in omudpspoof:\n"); + cnfparamsPrint(&actpblk, pvals); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "target")) { + pData->host = (uchar*) es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "port")) { + pData->port = (uchar*) es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "sourcetemplate")) { + free(pData->sourceTpl); + pData->sourceTpl = (uchar*) es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "sourceport.start")) { + pData->sourcePortStart = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "sourceport.end")) { + pData->sourcePortEnd = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "mtu")) { + pData->mtu = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + DBGPRINTF("omudpspoof: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + CODE_STD_STRING_REQUESTnewActInst(2) + + tplToUse = ustrdup((pData->tplName == NULL) ? getDfltTpl() : pData->tplName); + CHKiRet(OMSRsetEntry(*ppOMSR, 0, tplToUse, OMSR_NO_RQD_TPL_OPTS)); + CHKiRet(OMSRsetEntry(*ppOMSR, 1, ustrdup(pData->sourceTpl), OMSR_NO_RQD_TPL_OPTS)); + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINparseSelectorAct + uchar *sourceTpl; +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(2) + /* first check if this config line is actually for us */ + if(strncmp((char*) p, ":omudpspoof:", sizeof(":omudpspoof:") - 1)) { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + p += sizeof(":omudpspoof:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + CHKiRet(createInstance(&pData)); + + sourceTpl = (cs.pszSourceNameTemplate == NULL) ? UCHAR_CONSTANT("RSYSLOG_omudpspoofDfltSourceTpl") + : cs.pszSourceNameTemplate; + + if(cs.pszTargetHost == NULL) { + LogError(0, NO_ERRCODE, "No $ActionOMUDPSpoofTargetHost given, can not continue " + "with this action."); + ABORT_FINALIZE(RS_RET_HOST_NOT_SPECIFIED); + } + + /* fill instance properties */ + CHKmalloc(pData->host = ustrdup(cs.pszTargetHost)); + if(cs.pszTargetPort == NULL) + pData->port = NULL; + else + CHKmalloc(pData->port = ustrdup(cs.pszTargetPort)); + CHKiRet(OMSRsetEntry(*ppOMSR, 1, ustrdup(sourceTpl), OMSR_NO_RQD_TPL_OPTS)); + pData->sourcePortStart = cs.iSourcePortStart; + pData->sourcePortEnd = cs.iSourcePortEnd; + + /* process template */ + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, OMSR_NO_RQD_TPL_OPTS, + (cs.tplName == NULL) ? (uchar*)"RSYSLOG_TraditionalForwardFormat" : cs.tplName)); + +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +/* a common function to free our configuration variables - used both on exit + * and on $ResetConfig processing. -- rgerhards, 2008-05-16 + */ +static void +freeConfigVars(void) +{ + free(cs.tplName); + cs.tplName = NULL; + free(cs.pszTargetHost); + cs.pszTargetHost = NULL; + free(cs.pszTargetPort); + cs.pszTargetPort = NULL; +} + + +BEGINmodExit +CODESTARTmodExit + /* destroy the libnet state needed for forged UDP sources */ + pthread_mutex_destroy(&mutLibnet); + /* release what we no longer need */ + objRelease(glbl, CORE_COMPONENT); + objRelease(net, LM_NET_FILENAME); + freeConfigVars(); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +ENDqueryEtryPt + + +/* Reset config variables for this module to default values. + * rgerhards, 2008-03-28 + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + freeConfigVars(); + /* we now must reset all non-string values */ + cs.iSourcePortStart = DFLT_SOURCE_PORT_START; + cs.iSourcePortEnd = DFLT_SOURCE_PORT_END; + return RS_RET_OK; +} + + +BEGINmodInit() +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(net,LM_NET_FILENAME)); + + pthread_mutex_init(&mutLibnet, NULL); + + CHKiRet(regCfSysLineHdlr((uchar *)"actionomudpspoofdefaulttemplate", 0, eCmdHdlrGetWord, + setLegacyDfltTpl, NULL, NULL)); + CHKiRet(regCfSysLineHdlr((uchar *)"actionomudpspoofsourcenametemplate", 0, eCmdHdlrGetWord, NULL, + &cs.pszSourceNameTemplate, NULL)); + CHKiRet(regCfSysLineHdlr((uchar *)"actionomudpspooftargethost", 0, eCmdHdlrGetWord, NULL, + &cs.pszTargetHost, NULL)); + CHKiRet(regCfSysLineHdlr((uchar *)"actionomudpspooftargetport", 0, eCmdHdlrGetWord, NULL, + &cs.pszTargetPort, NULL)); + CHKiRet(regCfSysLineHdlr((uchar *)"actionomudpspoofsourceportstart", 0, eCmdHdlrInt, NULL, + &cs.iSourcePortStart, NULL)); + CHKiRet(regCfSysLineHdlr((uchar *)"actionomudpspoofsourceportend", 0, eCmdHdlrInt, NULL, + &cs.iSourcePortEnd, NULL)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit + +/* vim:set ai: + */ diff --git a/plugins/omuxsock/Makefile.am b/plugins/omuxsock/Makefile.am new file mode 100644 index 0000000..997232d --- /dev/null +++ b/plugins/omuxsock/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = omuxsock.la + +omuxsock_la_SOURCES = omuxsock.c +omuxsock_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) +omuxsock_la_LDFLAGS = -module -avoid-version +omuxsock_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/omuxsock/Makefile.in b/plugins/omuxsock/Makefile.in new file mode 100644 index 0000000..bb8beef --- /dev/null +++ b/plugins/omuxsock/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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install-ps-am install-strip installcheck installcheck-am \ + installdirs maintainer-clean maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/omuxsock/omuxsock.c b/plugins/omuxsock/omuxsock.c new file mode 100644 index 0000000..99fbc22 --- /dev/null +++ b/plugins/omuxsock/omuxsock.c @@ -0,0 +1,454 @@ +/* omuxsock.c + * This is the implementation of datgram unix domain socket forwarding. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * Copyright 2010-2016 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <assert.h> +#include <errno.h> +#include <unistd.h> +#include "conf.h" +#include "srUtils.h" +#include "template.h" +#include "msg.h" +#include "cfsysline.h" +#include "module-template.h" +#include "glbl.h" +#include "errmsg.h" +#include "unicode-helper.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omuxsock") + +/* internal structures + */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(glbl) + +#define INVLD_SOCK -1 + +typedef struct _instanceData { + permittedPeers_t *pPermPeers; + uchar *sockName; + int sock; + struct sockaddr_un addr; +} instanceData; + + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +/* config data */ +typedef struct configSettings_s { + uchar *tplName; /* name of the default template to use */ + uchar *sockName; /* name of the default template to use */ +} configSettings_t; +static configSettings_t cs; + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "template", eCmdHdlrGetWord, 0 }, +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + uchar *tplName; /* default template */ +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current exec process */ + + +static pthread_mutex_t mutDoAct = PTHREAD_MUTEX_INITIALIZER; + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + cs.tplName = NULL; + cs.sockName = NULL; +ENDinitConfVars + + +static rsRetVal doTryResume(instanceData *pData); + + +/* this function gets the default template. It coordinates action between + * old-style and new-style configuration parts. + */ +static uchar* +getDfltTpl(void) +{ + if(loadModConf != NULL && loadModConf->tplName != NULL) + return loadModConf->tplName; + else if(cs.tplName == NULL) + return (uchar*)"RSYSLOG_TraditionalForwardFormat"; + else + return cs.tplName; +} + +/* set the default template to be used + * This is a module-global parameter, and as such needs special handling. It needs to + * be coordinated with values set via the v2 config system (rsyslog v6+). What we do + * is we do not permit this directive after the v2 config system has been used to set + * the parameter. + */ +static rsRetVal +setLegacyDfltTpl(void __attribute__((unused)) *pVal, uchar* newVal) +{ + DEFiRet; + + if(loadModConf != NULL && loadModConf->tplName != NULL) { + free(newVal); + LogError(0, RS_RET_ERR, "omuxsock default template already set via module " + "global parameter - can no longer be changed"); + ABORT_FINALIZE(RS_RET_ERR); + } + free(cs.tplName); + cs.tplName = newVal; +finalize_it: + RETiRet; +} + + +static rsRetVal +closeSocket(instanceData *pData) +{ + DEFiRet; + if(pData->sock != INVLD_SOCK) { + close(pData->sock); + pData->sock = INVLD_SOCK; + } + RETiRet; +} + + + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->tplName = NULL; +ENDbeginCnfLoad + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for omuxsock:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "template")) { + loadModConf->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + if(cs.tplName != NULL) { + LogError(0, RS_RET_DUP_PARAM, "omuxsock: default template " + "was already set via legacy directive - may lead to inconsistent " + "results."); + } + } else { + dbgprintf("omuxsock: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +BEGINendCnfLoad +CODESTARTendCnfLoad + loadModConf = NULL; /* done loading */ + /* free legacy config vars */ + free(cs.tplName); + cs.tplName = NULL; +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf + free(pModConf->tplName); +ENDfreeCnf + +BEGINcreateInstance +CODESTARTcreateInstance + pData->sock = INVLD_SOCK; +ENDcreateInstance + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance + /* final cleanup */ + closeSocket(pData); + free(pData->sockName); +ENDfreeInstance + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + DBGPRINTF("%s", pData->sockName); +ENDdbgPrintInstInfo + + +/* Send a message via UDP + * rgehards, 2007-12-20 + */ +static rsRetVal sendMsg(instanceData *pData, char *msg, size_t len) +{ + DEFiRet; + unsigned lenSent = 0; + + if(pData->sock == INVLD_SOCK) { + CHKiRet(doTryResume(pData)); + } + + if(pData->sock != INVLD_SOCK) { + lenSent = sendto(pData->sock, msg, len, 0, (const struct sockaddr *)&pData->addr, + sizeof(pData->addr)); + if(lenSent != len) { + int eno = errno; + char errStr[1024]; + DBGPRINTF("omuxsock suspending: sendto(), socket %d, error: %d = %s.\n", + pData->sock, eno, rs_strerror_r(eno, errStr, sizeof(errStr))); + } + } + +finalize_it: + RETiRet; +} + + +/* open socket to remote system + */ +static rsRetVal +openSocket(instanceData *pData) +{ + DEFiRet; + assert(pData->sock == INVLD_SOCK); + + if((pData->sock = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0) { + char errStr[1024]; + int eno = errno; + DBGPRINTF("error %d creating AF_UNIX/SOCK_DGRAM: %s.\n", + eno, rs_strerror_r(eno, errStr, sizeof(errStr))); + pData->sock = INVLD_SOCK; + ABORT_FINALIZE(RS_RET_NO_SOCKET); + + } + + /* set up server address structure */ + memset(&pData->addr, 0, sizeof(pData->addr)); + pData->addr.sun_family = AF_UNIX; + strncpy(pData->addr.sun_path, (char*)pData->sockName, sizeof(pData->addr.sun_path)); + pData->addr.sun_path[sizeof(pData->addr.sun_path)-1] = '\0'; + +finalize_it: + if(iRet != RS_RET_OK) { + closeSocket(pData); + } + RETiRet; +} + + + +/* try to resume connection if it is not ready + */ +static rsRetVal doTryResume(instanceData *pData) +{ + DEFiRet; + + DBGPRINTF("omuxsock trying to resume\n"); + closeSocket(pData); + iRet = openSocket(pData); + + if(iRet != RS_RET_OK) { + iRet = RS_RET_SUSPENDED; + } + + RETiRet; +} + + +BEGINtryResume +CODESTARTtryResume + iRet = doTryResume(pWrkrData->pData); +ENDtryResume + +BEGINdoAction + char *psz = NULL; /* temporary buffering */ + register unsigned l; + int iMaxLine; +CODESTARTdoAction + pthread_mutex_lock(&mutDoAct); + CHKiRet(doTryResume(pWrkrData->pData)); + + iMaxLine = glbl.GetMaxLine(runModConf->pConf); + + DBGPRINTF(" omuxsock:%s\n", pWrkrData->pData->sockName); + + psz = (char*) ppString[0]; + l = strlen((char*) psz); + if((int) l > iMaxLine) + l = iMaxLine; + + CHKiRet(sendMsg(pWrkrData->pData, psz, l)); + +finalize_it: + pthread_mutex_unlock(&mutDoAct); +ENDdoAction + + +BEGINparseSelectorAct +CODESTARTparseSelectorAct +CODE_STD_STRING_REQUESTparseSelectorAct(1) + + /* first check if this config line is actually for us */ + if(strncmp((char*) p, ":omuxsock:", sizeof(":omuxsock:") - 1)) { + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* ok, if we reach this point, we have something for us */ + p += sizeof(":omuxsock:") - 1; /* eat indicator sequence (-1 because of '\0'!) */ + CHKiRet(createInstance(&pData)); + + /* check if a non-standard template is to be applied */ + if(*(p-1) == ';') + --p; + CHKiRet(cflineParseTemplateName(&p, *ppOMSR, 0, 0, getDfltTpl())); + + if(cs.sockName == NULL) { + LogError(0, RS_RET_NO_SOCK_CONFIGURED, "No output socket configured for omuxsock\n"); + ABORT_FINALIZE(RS_RET_NO_SOCK_CONFIGURED); + } + + pData->sockName = cs.sockName; + cs.sockName = NULL; /* pData is now owner and will fee it */ + +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +/* a common function to free our configuration variables - used both on exit + * and on $ResetConfig processing. -- rgerhards, 2008-05-16 + */ +static void +freeConfigVars(void) +{ + free(cs.tplName); + cs.tplName = NULL; + free(cs.sockName); + cs.sockName = NULL; +} + + +BEGINmodExit +CODESTARTmodExit + /* release what we no longer need */ + objRelease(glbl, CORE_COMPONENT); + + freeConfigVars(); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +ENDqueryEtryPt + + +/* Reset config variables for this module to default values. + * rgerhards, 2008-03-28 + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + freeConfigVars(); + return RS_RET_OK; +} + + +BEGINmodInit() +CODESTARTmodInit +INITLegCnfVars + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + + CHKiRet(regCfSysLineHdlr((uchar *)"omuxsockdefaulttemplate", 0, eCmdHdlrGetWord, setLegacyDfltTpl, + NULL, NULL)); + CHKiRet(regCfSysLineHdlr((uchar *)"omuxsocksocket", 0, eCmdHdlrGetWord, NULL, &cs.sockName, NULL)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); 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+ * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <errno.h> +#include <ctype.h> +#include "conf.h" +#include "syslogd-types.h" +#include "template.h" +#include "msg.h" +#include "module-template.h" +#include "glbl.h" +#include "errmsg.h" +#include "parser.h" +#include "datetime.h" +#include "unicode-helper.h" + +MODULE_TYPE_PARSER +MODULE_TYPE_NOKEEP +PARSER_NAME("rsyslog.ciscoios") +MODULE_CNFNAME("pmciscoios") + +/* internal structures */ +DEF_PMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(parser) +DEFobjCurrIf(datetime) + + +/* parser instance parameters */ +static struct cnfparamdescr parserpdescr[] = { + { "present.origin", eCmdHdlrBinary, 0 }, + { "present.xr", eCmdHdlrBinary, 0 } +}; +static struct cnfparamblk parserpblk = + { CNFPARAMBLK_VERSION, + sizeof(parserpdescr)/sizeof(struct cnfparamdescr), + parserpdescr + }; + +struct instanceConf_s { + int bOriginPresent; /* is ORIGIN field present? */ + int bXrPresent; /* is XR? */ +}; + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATUREAutomaticSanitazion) + iRet = RS_RET_OK; + if(eFeat == sFEATUREAutomaticPRIParsing) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->bOriginPresent = 0; + inst->bXrPresent = 0; + *pinst = inst; +finalize_it: + RETiRet; +} + + +BEGINfreeParserInst +CODESTARTfreeParserInst + dbgprintf("pmciscoios: free parser instance %p\n", pInst); +ENDfreeParserInst + + +BEGINnewParserInst + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTnewParserInst + DBGPRINTF("newParserInst (pmciscoios)\n"); + + inst = NULL; + CHKiRet(createInstance(&inst)); + + if(lst == NULL) + FINALIZE; /* just set defaults, no param block! */ + + if((pvals = nvlstGetParams(lst, &parserpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("parser param blk in pmciscoios:\n"); + cnfparamsPrint(&parserpblk, pvals); + } + + for(i = 0 ; i < parserpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(parserpblk.descr[i].name, "present.origin")) { + inst->bOriginPresent = (int) pvals[i].val.d.n; + } else if(!strcmp(parserpblk.descr[i].name, "present.xr")) { + inst->bXrPresent = (int) pvals[i].val.d.n; + } else { + dbgprintf("pmciscoios: program error, non-handled " + "param '%s'\n", parserpblk.descr[i].name); + } + } +finalize_it: +CODE_STD_FINALIZERnewParserInst + if(lst != NULL) + cnfparamvalsDestruct(pvals, &parserpblk); + if(iRet != RS_RET_OK) + freeParserInst(inst); +ENDnewParserInst + + +BEGINparse2 + uchar *p2parse; + long long msgcounter; + int lenMsg; + int i; + int iHostname = 0; + uchar bufParseTAG[512]; + uchar bufParseHOSTNAME[CONF_HOSTNAME_MAXSIZE]; /* used by origin */ +CODESTARTparse2 + DBGPRINTF("Message will now be parsed by pmciscoios\n"); + assert(pMsg != NULL); + assert(pMsg->pszRawMsg != NULL); + lenMsg = pMsg->iLenRawMsg - pMsg->offAfterPRI; + /* note: offAfterPRI is already the number of PRI chars (do not add one!) */ + p2parse = pMsg->pszRawMsg + pMsg->offAfterPRI; /* point to start of text, after PRI */ + + /* first obtain the MESSAGE COUNTER. It must be numeric up until + * the ": " terminator sequence + */ + msgcounter = 0; + while(lenMsg > 0 && (*p2parse >= '0' && *p2parse <= '9') ) { + msgcounter = msgcounter * 10 + *p2parse - '0'; + ++p2parse, --lenMsg; + } + DBGPRINTF("pmciscoios: msgcntr %lld\n", msgcounter); + + /* delimiter check */ + if(lenMsg < 2 || *p2parse != ':' || *(p2parse+1) != ' ') { + DBGPRINTF("pmciscoios: fail after seqno: '%s'\n", p2parse); + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + p2parse += 2; + + /* ORIGIN (optional) */ + if(pInst->bOriginPresent) { + iHostname = 0; + while( lenMsg > 1 + && !(*p2parse == ':' && *(p2parse+1) == ' ') /* IPv6 is e.g. "::1" (loopback) */ + && iHostname < (int) sizeof(bufParseHOSTNAME) - 1 ) { + bufParseHOSTNAME[iHostname++] = *p2parse++; + --lenMsg; + } + bufParseHOSTNAME[iHostname] = '\0'; + /* delimiter check */ + if(lenMsg < 2 || *(p2parse+1) != ' ') { + DBGPRINTF("pmciscoios: fail after origin: '%s'\n", p2parse); + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + p2parse += 2; + } + + /* XR RSP (optional) */ + if(pInst->bXrPresent) { + while( lenMsg > 1 + && !(*p2parse == ':')) { + --lenMsg; + ++p2parse; + } + /* delimiter check */ + if(lenMsg < 2) { + DBGPRINTF("pmciscoios: fail after XR: '%s'\n", p2parse); + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + p2parse += 1; + } + + /* TIMESTAMP */ + if(p2parse[0] == '*' || p2parse[0] == '.') p2parse++; + if(datetime.ParseTIMESTAMP3164(&(pMsg->tTIMESTAMP), &p2parse, &lenMsg, PARSE3164_TZSTRING, + NO_PERMIT_YEAR_AFTER_TIME) == RS_RET_OK) { + if(pMsg->dfltTZ[0] != '\0') + applyDfltTZ(&pMsg->tTIMESTAMP, pMsg->dfltTZ); + } else { + DBGPRINTF("pmciscoios: fail at timestamp: '%s'\n", p2parse); + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + /* Note: date parser strips ": ", so we cannot do the delimiter check here */ + + /* XR RSP (optional) */ + if(pInst->bXrPresent) { + while( lenMsg > 1 + && !(*p2parse == '%')) { + --lenMsg; + p2parse++; + } + /* delimiter check */ + if(lenMsg < 2) { + DBGPRINTF("pmciscoios: fail after XR tag search: '%s'\n", p2parse); + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + } + + /* parse SYSLOG TAG. must always start with '%', else we have a field mismatch */ + if(lenMsg < 1 || *p2parse != '%') { + DBGPRINTF("pmciscoios: fail at tag begin (no '%%'): '%s'\n", p2parse); + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + + i = 0; + while(lenMsg > 0 && *p2parse != ':' && *p2parse != ' ' && i < (int) sizeof(bufParseTAG) - 2) { + bufParseTAG[i++] = *p2parse++; + --lenMsg; + } + /* delimiter check */ + if(pInst->bXrPresent) p2parse++; + if(lenMsg < 2 || *p2parse != ':' || *(p2parse+1) != ' ') { + DBGPRINTF("pmciscoios: fail after tag: '%s'\n", p2parse); + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + + ++p2parse; + bufParseTAG[i++] = ':'; + bufParseTAG[i] = '\0'; /* terminate string */ + + /* if we reach this point, we have a wellformed message and can persist the values */ + MsgSetTAG(pMsg, bufParseTAG, i); + /* if bOriginPresent !=0 iHostname gets initialized */ + if(pInst->bOriginPresent) + MsgSetHOSTNAME(pMsg, bufParseHOSTNAME, iHostname); + MsgSetMSGoffs(pMsg, p2parse - pMsg->pszRawMsg); + setProtocolVersion(pMsg, MSG_LEGACY_PROTOCOL); +finalize_it: +ENDparse2 + + +BEGINmodExit +CODESTARTmodExit + /* release what we no longer need */ + objRelease(glbl, CORE_COMPONENT); + objRelease(parser, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_PMOD2_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(parser, CORE_COMPONENT)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + + DBGPRINTF("pmciscoios parser init called\n"); +ENDmodInit diff --git a/plugins/pmlastmsg/Makefile.am b/plugins/pmlastmsg/Makefile.am new file mode 100644 index 0000000..f360243 --- /dev/null +++ b/plugins/pmlastmsg/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = pmlastmsg.la + +pmlastmsg_la_SOURCES = pmlastmsg.c +pmlastmsg_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) -I ../../tools +pmlastmsg_la_LDFLAGS = -module -avoid-version +pmlastmsg_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/pmlastmsg/Makefile.in b/plugins/pmlastmsg/Makefile.in new file mode 100644 index 0000000..207579f --- /dev/null +++ b/plugins/pmlastmsg/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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Note that this parser should be placed + * on top of the parser stack -- it takes out only these messages and + * leaves all others for processing by the other parsers. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * File begun on 2010-07-13 by RGerhards + * + * Copyright 2014-2016 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <ctype.h> +#include "conf.h" +#include "syslogd-types.h" +#include "template.h" +#include "msg.h" +#include "module-template.h" +#include "glbl.h" +#include "errmsg.h" +#include "parser.h" +#include "datetime.h" +#include "unicode-helper.h" +#include "rsconf.h" + +MODULE_TYPE_PARSER +MODULE_TYPE_NOKEEP +PARSER_NAME("rsyslog.lastline") + +/* internal structures + */ +DEF_PMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(parser) +DEFobjCurrIf(datetime) + + +/* static data */ +static int bParseHOSTNAMEandTAG; /* cache for the equally-named global param - performance enhancement */ + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATUREAutomaticSanitazion) + iRet = RS_RET_OK; + if(eFeat == sFEATUREAutomaticPRIParsing) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +/* parse a legay-formatted syslog message. + */ +BEGINparse + uchar *p2parse; + int lenMsg; +#define OpeningText "last message repeated " +#define ClosingText " times" +CODESTARTparse + dbgprintf("Message will now be parsed by \"last message repated n times\" parser.\n"); + assert(pMsg != NULL); + assert(pMsg->pszRawMsg != NULL); + lenMsg = pMsg->iLenRawMsg - pMsg->offAfterPRI; + /* note: offAfterPRI is already the number of PRI chars (do not add one!) */ + p2parse = pMsg->pszRawMsg + pMsg->offAfterPRI; /* point to start of text, after PRI */ + + /* check if this message is of the type we handle in this (very limited) parser */ + /* first, we permit SP */ + while(lenMsg && *p2parse == ' ') { + --lenMsg; + ++p2parse; + } + if((unsigned) lenMsg < sizeof(OpeningText)-1 + sizeof(ClosingText)-1 + 1) { + /* too short, can not be "our" message */ + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + + if(strncasecmp((char*) p2parse, OpeningText, sizeof(OpeningText)-1) != 0) { + /* wrong opening text */ + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + lenMsg -= sizeof(OpeningText) - 1; + p2parse += sizeof(OpeningText) - 1; + + /* now we need an integer --> digits */ + while(lenMsg && isdigit(*p2parse)) { + --lenMsg; + ++p2parse; + } + + if(lenMsg != sizeof(ClosingText)-1) { + /* size must fit, else it is not "our" message... */ + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + + if(strncasecmp((char*) p2parse, ClosingText, lenMsg) != 0) { + /* wrong closing text */ + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } + + /* OK, now we know we need to process this message, so we do that + * (and it is fairly simple in our case...) + */ + DBGPRINTF("pmlastmsg detected a \"last message repeated n times\" message\n"); + + setProtocolVersion(pMsg, MSG_LEGACY_PROTOCOL); + memcpy(&pMsg->tTIMESTAMP, &pMsg->tRcvdAt, sizeof(struct syslogTime)); + MsgSetMSGoffs(pMsg, pMsg->offAfterPRI); /* we don't have a header! */ + MsgSetTAG(pMsg, (uchar*)"", 0); + +finalize_it: +ENDparse + + +BEGINmodExit +CODESTARTmodExit + /* release what we no longer need */ + objRelease(glbl, CORE_COMPONENT); + objRelease(parser, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_PMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(parser, CORE_COMPONENT)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + + dbgprintf("lastmsg parser init called, compiled with version %s\n", VERSION); + bParseHOSTNAMEandTAG = glbl.GetParseHOSTNAMEandTAG(loadConf); + /* cache value, is set only during rsyslogd option processing */ + + +ENDmodInit + +/* vim:set ai: + */ diff --git a/plugins/pmnormalize/Makefile.am b/plugins/pmnormalize/Makefile.am new file mode 100644 index 0000000..e286760 --- /dev/null +++ b/plugins/pmnormalize/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = pmnormalize.la + +pmnormalize_la_SOURCES = pmnormalize.c +pmnormalize_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) $(LIBLOGNORM_CFLAGS) -I ../../tools +pmnormalize_la_LDFLAGS = -module -avoid-version $(LIBLOGNORM_LIBS) +pmnormalize_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/pmnormalize/Makefile.in b/plugins/pmnormalize/Makefile.in new file mode 100644 index 0000000..432b109 --- /dev/null +++ b/plugins/pmnormalize/Makefile.in @@ -0,0 +1,798 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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+ * + * File begun on 2017-03-03 by Pascal Withopf. + * + * Copyright 2014-2019 Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <errno.h> +#include <ctype.h> +#include <liblognorm.h> +#include <json.h> +#include "conf.h" +#include "syslogd-types.h" +#include "template.h" +#include "msg.h" +#include "module-template.h" +#include "glbl.h" +#include "errmsg.h" +#include "parser.h" +#include "datetime.h" +#include "unicode-helper.h" + +MODULE_TYPE_PARSER +MODULE_TYPE_NOKEEP +PARSER_NAME("rsyslog.pmnormalize") +MODULE_CNFNAME("pmnormalize") + +/* internal structures */ +DEF_PMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(parser) +DEFobjCurrIf(datetime) + + +/* parser instance parameters */ +static struct cnfparamdescr parserpdescr[] = { + { "rulebase", eCmdHdlrGetWord, 0 }, + { "rule", eCmdHdlrArray, 0 }, + { "undefinedpropertyerror", eCmdHdlrBinary, 0 } +}; +static struct cnfparamblk parserpblk = + { CNFPARAMBLK_VERSION, + sizeof(parserpdescr)/sizeof(struct cnfparamdescr), + parserpdescr + }; + +struct instanceConf_s { + sbool undefPropErr; + char *rulebase; + char *rule; + ln_ctx ctxln; /*context to be used for liblognorm*/ + char *pszPath; /*path of normalized data*/ +}; + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATUREAutomaticSanitazion) + iRet = RS_RET_OK; + if(eFeat == sFEATUREAutomaticPRIParsing) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->undefPropErr = 0; + inst->rulebase = NULL; + inst->rule = NULL; + inst->ctxln = NULL; + *pinst = inst; +finalize_it: + RETiRet; +} + +/* callback for liblognorm error messages */ +static void +errCallBack(void __attribute__((unused)) *cookie, const char *msg, + size_t __attribute__((unused)) lenMsg) +{ + LogError(0, RS_RET_ERR_LIBLOGNORM, "liblognorm error: %s", msg); +} + +/* to be called to build the liblognorm part of the instance ONCE ALL PARAMETERS ARE CORRECT + * (and set within inst!). + */ +static rsRetVal +buildInstance(instanceConf_t *inst) +{ + DEFiRet; + if((inst->ctxln = ln_initCtx()) == NULL) { + LogError(0, RS_RET_ERR_LIBLOGNORM_INIT, "error: could not initialize " + "liblognorm ctx, cannot activate action"); + ABORT_FINALIZE(RS_RET_ERR_LIBLOGNORM_INIT); + } + ln_setErrMsgCB(inst->ctxln, errCallBack, NULL); + + if(inst->rule != NULL && inst->rulebase == NULL) { + if(ln_loadSamplesFromString(inst->ctxln, inst->rule) !=0) { + LogError(0, RS_RET_NO_RULEBASE, "error: normalization rules '%s' " + "could not be loaded, cannot activate action", inst->rule); + ABORT_FINALIZE(RS_RET_ERR_LIBLOGNORM_SAMPDB_LOAD); + } + } else if(inst->rulebase != NULL && inst->rule == NULL) { + if(ln_loadSamples(inst->ctxln, (char*) inst->rulebase) != 0) { + LogError(0, RS_RET_NO_RULEBASE, "error: normalization rulebase '%s' " + "could not be loaded, cannot activate action", inst->rulebase); + ABORT_FINALIZE(RS_RET_ERR_LIBLOGNORM_SAMPDB_LOAD); + } + } +finalize_it: + RETiRet; +} + + +BEGINfreeParserInst +CODESTARTfreeParserInst + dbgprintf("pmnormalize: free parser instance %p\n", pInst); + free(pInst->rulebase); + free(pInst->rule); + if(pInst->ctxln != NULL) { + ln_exitCtx(pInst->ctxln); + } +ENDfreeParserInst + + +BEGINnewParserInst + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTnewParserInst + DBGPRINTF("newParserInst (pmnormalize)\n"); + + inst = NULL; + CHKiRet(createInstance(&inst)); + + if(lst == NULL) + FINALIZE; /* just set defaults, no param block! */ + + if((pvals = nvlstGetParams(lst, &parserpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("parser param blk in pmnormalize:\n"); + cnfparamsPrint(&parserpblk, pvals); + } + + for(i = 0 ; i < parserpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(parserpblk.descr[i].name, "undefinedpropertyerror")) { + inst->undefPropErr = (int) pvals[i].val.d.n; + } else if(!strcmp(parserpblk.descr[i].name, "rulebase")) { + inst->rulebase = (char *) es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(parserpblk.descr[i].name, "rule")) { + es_str_t *rules; + CHKmalloc(rules = es_newStr(128)); + for(int j=0; j < pvals[i].val.d.ar->nmemb; ++j) { + CHKiRet(es_addStr(&rules, pvals[i].val.d.ar->arr[j])); + CHKiRet(es_addChar(&rules, '\n')); + } + inst->rule = (char*)es_str2cstr(rules, NULL); + if(rules != NULL) + es_deleteStr(rules); + } else { + LogError(0, RS_RET_INTERNAL_ERROR , + "pmnormalize: program error, non-handled param '%s'", + parserpblk.descr[i].name); + } + } + if(!inst->rulebase && !inst->rule) { + LogError(0, RS_RET_CONFIG_ERROR, "pmnormalize: you need to specify " + "either parameter 'rule' or 'rulebase'."); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + if(inst->rulebase && inst->rule) { + LogError(0, RS_RET_CONFIG_ERROR, "pmnormalize: you need to specify " + "one of the parameters 'rule' and 'rulebase', but not both"); + ABORT_FINALIZE(RS_RET_CONFIG_ERROR); + } + + iRet = buildInstance(inst); +finalize_it: +CODE_STD_FINALIZERnewParserInst + if(lst != NULL) + cnfparamvalsDestruct(pvals, &parserpblk); + if(iRet != RS_RET_OK && inst != NULL) + freeParserInst(inst); +ENDnewParserInst + + +BEGINparse2 + uchar *buf; + rs_size_t len; + int r; + struct json_object *json = NULL; +CODESTARTparse2 + DBGPRINTF("Message will now be parsed by pmnormalize\n"); + /*Msg OffSet needs to be set*/ + MsgSetMSGoffs(pMsg, 0); + + getRawMsg(pMsg, &buf, &len); + r = ln_normalize(pInst->ctxln, (char*)buf, len, &json); + if(r != 0) { + DBGPRINTF("error %d during ln_normalize\n", r); + if(pInst->undefPropErr) { + LogError(0, RS_RET_ERR, "error %d during ln_normalize; " + "json: %s\n", r, fjson_object_to_json_string(json)); + } + fjson_object_put(json); + ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE); + } else { + iRet = MsgSetPropsViaJSON_Object(pMsg, json); + } +finalize_it: +ENDparse2 + + +BEGINmodExit +CODESTARTmodExit + /* release what we no longer need */ + objRelease(glbl, CORE_COMPONENT); + objRelease(parser, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_PMOD2_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(parser, CORE_COMPONENT)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + + DBGPRINTF("pmnormalize parser init called\n"); +ENDmodInit diff --git a/plugins/pmnull/Makefile.am b/plugins/pmnull/Makefile.am new file mode 100644 index 0000000..eb310a1 --- /dev/null +++ b/plugins/pmnull/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = pmnull.la + +pmnull_la_SOURCES = pmnull.c +pmnull_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) -I ../../tools +pmnull_la_LDFLAGS = -module -avoid-version +pmnull_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/pmnull/Makefile.in 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http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "config.h" +#include "rsyslog.h" +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <errno.h> +#include <ctype.h> +#include "conf.h" +#include "syslogd-types.h" +#include "template.h" +#include "msg.h" +#include "module-template.h" +#include "glbl.h" +#include "errmsg.h" +#include "parser.h" +#include "datetime.h" +#include "unicode-helper.h" + +MODULE_TYPE_PARSER +MODULE_TYPE_NOKEEP +PARSER_NAME("rsyslog.pmnull") +MODULE_CNFNAME("pmnull") + +/* internal structures */ +DEF_PMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(parser) +DEFobjCurrIf(datetime) + + +/* parser instance parameters */ +static struct cnfparamdescr parserpdescr[] = { + { "tag", eCmdHdlrString, 0 }, + { "syslogfacility", eCmdHdlrFacility, 0 }, + { "syslogseverity", eCmdHdlrSeverity, 0 } +}; +static struct cnfparamblk parserpblk = + { CNFPARAMBLK_VERSION, + sizeof(parserpdescr)/sizeof(struct cnfparamdescr), + parserpdescr + }; + +struct instanceConf_s { + const char *tag; + size_t lenTag; + int pri; +}; + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATUREAutomaticSanitazion) + iRet = RS_RET_OK; + if(eFeat == sFEATUREAutomaticPRIParsing) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->tag = NULL; + *pinst = inst; +finalize_it: + RETiRet; +} + + +BEGINfreeParserInst +CODESTARTfreeParserInst + dbgprintf("pmnull: free parser instance %p\n", pInst); +ENDfreeParserInst + + +BEGINnewParserInst + struct cnfparamvals *pvals = NULL; + int i; + int syslogfacility = 1; /* default as of rfc3164 */ + int syslogseverity = 5; /* default as of rfc3164 */ +CODESTARTnewParserInst + DBGPRINTF("newParserInst (pmnull)\n"); + + inst = NULL; + CHKiRet(createInstance(&inst)); + + if(lst == NULL) + FINALIZE; /* just set defaults, no param block! */ + + if((pvals = nvlstGetParams(lst, &parserpblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("parser param blk in pmnull:\n"); + cnfparamsPrint(&parserpblk, pvals); + } + + for(i = 0 ; i < parserpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(parserpblk.descr[i].name, "tag")) { + inst->tag = (const char *) es_str2cstr(pvals[i].val.d.estr, NULL); + inst->lenTag = strlen(inst->tag); + } else if(!strcmp(parserpblk.descr[i].name, "syslogfacility")) { + syslogfacility = pvals[i].val.d.n; + } else if(!strcmp(parserpblk.descr[i].name, "syslogseverity")) { + syslogseverity = pvals[i].val.d.n; + } else { + dbgprintf("pmnull: program error, non-handled " + "param '%s'\n", parserpblk.descr[i].name); + } + } + inst->pri = syslogfacility*8 + syslogseverity; +finalize_it: +CODE_STD_FINALIZERnewParserInst + if(lst != NULL) + cnfparamvalsDestruct(pvals, &parserpblk); + if(iRet != RS_RET_OK) + freeParserInst(inst); +ENDnewParserInst + + +BEGINparse2 +CODESTARTparse2 + DBGPRINTF("Message will now be parsed by pmnull\n"); + if(pInst->tag != NULL) { + MsgSetTAG(pMsg, (uchar *)pInst->tag, pInst->lenTag); + } + msgSetPRI(pMsg, pInst->pri); + MsgSetMSGoffs(pMsg, 0); +ENDparse2 + + +BEGINmodExit +CODESTARTmodExit + /* release what we no longer need */ + objRelease(glbl, CORE_COMPONENT); + objRelease(parser, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_PMOD2_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(parser, CORE_COMPONENT)); + CHKiRet(objUse(datetime, CORE_COMPONENT)); + + DBGPRINTF("pmnull parser init called\n"); +ENDmodInit |