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Diffstat (limited to 'tools/smfwd.c')
| -rw-r--r-- | tools/smfwd.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/tools/smfwd.c b/tools/smfwd.c new file mode 100644 index 00000000..fe33fb2c --- /dev/null +++ b/tools/smfwd.c @@ -0,0 +1,142 @@ +/* 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 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 +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 >= *pLenBuf) + CHKiRet(ExtendBuf(ppBuf, pLenBuf, lenTotal)); + + /* and concatenate the resulting string */ + **ppBuf = '<'; + memcpy(*ppBuf + 1, pPRI, lenPRI); + iBuf = lenPRI + 1; + *(*ppBuf + iBuf++) = '>'; + + memcpy(*ppBuf + iBuf, pTimeStamp, lenTimeStamp); + iBuf += lenTimeStamp; + *(*ppBuf + iBuf++) = ' '; + + memcpy(*ppBuf + iBuf, pHOSTNAME, lenHOSTNAME); + iBuf += lenHOSTNAME; + *(*ppBuf + iBuf++) = ' '; + + memcpy(*ppBuf + iBuf, pTAG, lenTAG); + iBuf += lenTAG; + + if(pMSG[0] != ' ') + *(*ppBuf + iBuf++) = ' '; + memcpy(*ppBuf + iBuf, pMSG, lenMSG); + iBuf += lenMSG; + + /* string terminator */ + *(*ppBuf + iBuf) = '\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 |