diff options
Diffstat (limited to 'plugins/omuxsock')
| -rw-r--r-- | plugins/omuxsock/Makefile.am | 8 | ||||
| -rw-r--r-- | plugins/omuxsock/Makefile.in | 797 | ||||
| -rw-r--r-- | plugins/omuxsock/omuxsock.c | 454 |
3 files changed, 1259 insertions, 0 deletions
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) $(PTHREADS_CFLAGS) +omuxsock_la_LDFLAGS = -module -avoid-version +omuxsock_la_LIBADD = + +EXTRA_DIST = diff --git a/plugins/omuxsock/Makefile.in b/plugins/omuxsock/Makefile.in new file mode 100644 index 0000000..bb8beef --- /dev/null +++ b/plugins/omuxsock/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +am__is_gnu_make = { \ + if test -z '$(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/omuxsock +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-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)); +ENDmodInit + +/* vim:set ai: + */ |