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Diffstat (limited to 'tools/smfile.c')
| -rw-r--r-- | tools/smfile.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/tools/smfile.c b/tools/smfile.c new file mode 100644 index 0000000..afd919b --- /dev/null +++ b/tools/smfile.c @@ -0,0 +1,137 @@ +/* smfile.c + * This is a strgen module for the traditional file format. + * + * Format generated: + * "%TIMESTAMP:::date-rfc3339% %HOSTNAME% %syslogtag%%msg:::sp-if-no-1st-sp%%msg:::drop-last-lf%\n" + * Note that this is the same as smtradfile.c, except that we do have a RFC3339 timestamp. However, + * we have copied over the code from there, it is too simple to go through all the hassle + * of having a single code base. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * File begun on 2010-06-01 by RGerhards + * + * Copyright 2010-2014 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#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_FileFormat") + +/* 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; + 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) */ + pTimeStamp = (uchar*) getTimeReported(pMsg, tplFmtRFC3339Date); + lenTimeStamp = ustrlen(pTimeStamp); + pHOSTNAME = (uchar*) getHOSTNAME(pMsg); + lenHOSTNAME = getHOSTNAMELen(pMsg); + getTAG(pMsg, &pTAG, &lenTAG, LOCK_MUTEX); + pMSG = getMSG(pMsg); + lenMSG = getMSGLen(pMsg); + + /* calculate len, constants for spaces and similar fixed strings */ + lenTotal = lenTimeStamp + 1 + lenHOSTNAME + 1 + lenTAG + lenMSG + 2; + 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 */ + memcpy(iparam->param, 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; + + /* trailer */ + iparam->param[iBuf++] = '\n'; + 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(smfile) +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + + dbgprintf("rsyslog standard file format strgen init called, compiled with version %s\n", VERSION); +ENDmodInit |