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/* smfwd.c
* This is a strgen module for the traditional (network) forwarding format.
*
* Format generated:
* "<%PRI%>%TIMESTAMP:::date-rfc3339% %HOSTNAME% %syslogtag:1:32%%msg:::sp-if-no-1st-sp%%msg%"
*
* NOTE: read comments in module-template.h to understand how this file
* works!
*
* File begun on 2010-06-01 by RGerhards
*
* Copyright 2010-2013 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 <string.h>
#include <assert.h>
#include <errno.h>
#include "syslogd.h"
#include "conf.h"
#include "syslogd-types.h"
#include "template.h"
#include "msg.h"
#include "module-template.h"
#include "unicode-helper.h"
MODULE_TYPE_STRGEN
MODULE_TYPE_NOKEEP
STRGEN_NAME("RSYSLOG_ForwardFormat")
/* internal structures
*/
DEF_SMOD_STATIC_DATA
/* config data */
/* This strgen tries to minimize the amount of reallocs be first obtaining pointers to all strings
* needed (including their length) and then calculating the actual space required. So when we
* finally copy, we know exactly what we need. So we do at most one alloc.
*/
BEGINstrgen
register int iBuf;
char *pPRI;
size_t lenPRI;
uchar *pTimeStamp;
size_t lenTimeStamp;
uchar *pHOSTNAME;
size_t lenHOSTNAME;
uchar *pTAG;
int lenTAG;
uchar *pMSG;
size_t lenMSG;
size_t lenTotal;
CODESTARTstrgen
/* first obtain all strings and their length (if not fixed) */
pPRI = getPRI(pMsg);
lenPRI = strlen(pPRI);
pTimeStamp = (uchar*) getTimeReported(pMsg, tplFmtRFC3339Date);
lenTimeStamp = ustrlen(pTimeStamp);
pHOSTNAME = (uchar*) getHOSTNAME(pMsg);
lenHOSTNAME = getHOSTNAMELen(pMsg);
getTAG(pMsg, &pTAG, &lenTAG);
if(lenTAG > 32)
lenTAG = 32; /* for forwarding, a max of 32 chars is permitted (RFC!) */
pMSG = getMSG(pMsg);
lenMSG = getMSGLen(pMsg);
/* calculate len, constants for spaces and similar fixed strings */
lenTotal = 1 + lenPRI + 1 + lenTimeStamp + 1 + lenHOSTNAME + 1 + lenTAG + lenMSG + 1;
if(pMSG[0] != ' ')
++lenTotal; /* then we need to introduce one additional space */
/* now make sure buffer is large enough */
if(lenTotal >= iparam->lenBuf)
CHKiRet(ExtendBuf(iparam, lenTotal));
/* and concatenate the resulting string */
iparam->param[0] = '<';
memcpy(iparam->param + 1, pPRI, lenPRI);
iBuf = lenPRI + 1;
iparam->param[iBuf++] = '>';
memcpy(iparam->param + iBuf, pTimeStamp, lenTimeStamp);
iBuf += lenTimeStamp;
iparam->param[iBuf++] = ' ';
memcpy(iparam->param + iBuf, pHOSTNAME, lenHOSTNAME);
iBuf += lenHOSTNAME;
iparam->param[iBuf++] = ' ';
memcpy(iparam->param + iBuf, pTAG, lenTAG);
iBuf += lenTAG;
if(pMSG[0] != ' ')
iparam->param[iBuf++] = ' ';
memcpy(iparam->param + iBuf, pMSG, lenMSG);
iBuf += lenMSG;
/* string terminator */
iparam->param[iBuf] = '\0';
iparam->lenStr = lenTotal - 1; /* do not count \0! */
finalize_it:
ENDstrgen
BEGINmodExit
CODESTARTmodExit
ENDmodExit
BEGINqueryEtryPt
CODESTARTqueryEtryPt
CODEqueryEtryPt_STD_SMOD_QUERIES
ENDqueryEtryPt
BEGINmodInit(smfwd)
CODESTARTmodInit
*ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */
CODEmodInit_QueryRegCFSLineHdlr
dbgprintf("rsyslog standard (network) forward format strgen init called, compiled with version %s\n", VERSION);
ENDmodInit
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