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-rw-r--r--plugins/pmaixforwardedfrom/Makefile.am8
-rw-r--r--plugins/pmaixforwardedfrom/pmaixforwardedfrom.c167
2 files changed, 175 insertions, 0 deletions
diff --git a/plugins/pmaixforwardedfrom/Makefile.am b/plugins/pmaixforwardedfrom/Makefile.am
new file mode 100644
index 00000000..af359d31
--- /dev/null
+++ b/plugins/pmaixforwardedfrom/Makefile.am
@@ -0,0 +1,8 @@
+pkglib_LTLIBRARIES = pmaixforwardedfrom.la
+
+pmaixforwardedfrom_la_SOURCES = pmaixforwardedfrom.c
+pmaixforwardedfrom_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) -I ../../tools
+pmaixforwardedfrom_la_LDFLAGS = -module -avoid-version
+pmaixforwardedfrom_la_LIBADD =
+
+EXTRA_DIST =
diff --git a/plugins/pmaixforwardedfrom/pmaixforwardedfrom.c b/plugins/pmaixforwardedfrom/pmaixforwardedfrom.c
new file mode 100644
index 00000000..11634199
--- /dev/null
+++ b/plugins/pmaixforwardedfrom/pmaixforwardedfrom.c
@@ -0,0 +1,167 @@
+/* pmaixforwardedfrom.c
+ *
+ * this detects logs sent by Cisco devices that mangle their syslog output when you tell them to log by name by adding ' :' between the name and the %XXX-X-XXXXXXX: tag
+ *
+ * instead of actually parsing the message, this modifies the message and then falls through to allow a later parser to handle the now modified message
+ *
+ * created 2010-12-13 by David Lang based on pmlastmsg
+ *
+ * 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 <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"
+
+MODULE_TYPE_PARSER
+PARSER_NAME("rsyslog.aixforwardedfrom")
+
+/* internal structures
+ */
+DEF_PMOD_STATIC_DATA
+DEFobjCurrIf(errmsg)
+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
+
+
+BEGINparse
+ uchar *p2parse;
+ uchar *opening;
+ int lenMsg;
+#define OpeningText "Message forwarded from "
+CODESTARTparse
+ dbgprintf("Message will now be parsed by fix AIX Forwarded From 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;
+ }
+dbgprintf("pmaixforwardedfrom: msg to look at: [%d]'%s'\n", lenMsg, p2parse);
+ if((unsigned) lenMsg < 42) {
+ /* too short, can not be "our" message */
+ /* minimum message, 16 character timestamp, 'Message forwarded from ", 1 character name, ': '*/
+dbgprintf("msg too short!\n");
+ ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE);
+ }
+
+ /* skip over timestamp */
+ lenMsg -=16;
+ p2parse +=16;
+ /* if there is the string "Message forwarded from " were the hostname should be */
+ if(strncasecmp((char*) p2parse, OpeningText, sizeof(OpeningText)-1) != 0) {
+ /* wrong opening text */
+dbgprintf("not a AIX message forwarded from mangled log!\n");
+ ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE);
+ }
+ /* bump the message portion up by 23 characters to overwrite the "Message forwarded from " with the hostname */
+ lenMsg -=23;
+ memmove(p2parse, p2parse + 23, lenMsg);
+ *(p2parse + lenMsg) = '\n';
+ *(p2parse + lenMsg + 1) = '\0';
+ pMsg->iLenRawMsg -=23;
+ pMsg->iLenMSG -=23;
+ /* now look for the : after the hostname to walk past the hostname, also watch for a space in case this isn't really an AIX log, but has a similar preamble */
+ while(lenMsg && *p2parse != ' ' && *p2parse != ':') {
+ --lenMsg;
+ ++p2parse;
+ }
+ if (lenMsg && *p2parse != ':') {
+dbgprintf("not a AIX message forwarded from mangled log but similar enough that the preamble has been removed\n");
+ ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE);
+ }
+ /* bump the message portion up by one character to overwrite the extra : */
+ lenMsg -=1;
+ memmove(p2parse, p2parse + 1, lenMsg);
+ *(p2parse + lenMsg) = '\n';
+ *(p2parse + lenMsg + 1) = '\0';
+ pMsg->iLenRawMsg -=1;
+ pMsg->iLenMSG -=1;
+ /* now, claim to abort so that something else can parse the now modified message */
+ DBGPRINTF("pmaixforwardedfrom: new mesage: [%d]'%s'\n", lenMsg, pMsg->pszRawMsg + pMsg->offAfterPRI);
+ ABORT_FINALIZE(RS_RET_COULD_NOT_PARSE);
+
+finalize_it:
+ENDparse
+
+
+BEGINmodExit
+CODESTARTmodExit
+ /* release what we no longer need */
+ objRelease(errmsg, CORE_COMPONENT);
+ 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(errmsg, CORE_COMPONENT));
+ CHKiRet(objUse(parser, CORE_COMPONENT));
+ CHKiRet(objUse(datetime, CORE_COMPONENT));
+
+ DBGPRINTF("aixforwardedfrom parser init called, compiled with version %s\n", VERSION);
+ bParseHOSTNAMEandTAG = glbl.GetParseHOSTNAMEandTAG(); /* cache value, is set only during rsyslogd option processing */
+
+
+ENDmodInit
+
+/* vim:set ai:
+ */