/* 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 . * * A copy of the GPL can be found in the file "COPYING" in this distribution. */ #include "config.h" #include "rsyslog.h" #include #include #include #include #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