diff options
Diffstat (limited to 'plugins/omgssapi')
| -rw-r--r-- | plugins/omgssapi/Makefile.am | 6 | ||||
| -rw-r--r-- | plugins/omgssapi/Makefile.in | 797 | ||||
| -rw-r--r-- | plugins/omgssapi/omgssapi.c | 720 |
3 files changed, 1523 insertions, 0 deletions
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 = $(GSS_LIBS) diff --git a/plugins/omgssapi/Makefile.in b/plugins/omgssapi/Makefile.in new file mode 100644 index 0000000..7b364ff --- /dev/null +++ b/plugins/omgssapi/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +am__is_gnu_make = { \ + if test -z '$(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/omgssapi +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-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: + */ |