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/* pmnull.c
* This is a parser module for CISCO IOS "syslog" format.
*
* File begun on 2014-07-07 by RGerhards
*
* Copyright 2014-2015 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 <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
MODULE_TYPE_NOKEEP;
PARSER_NAME("rsyslog.pmnull")
MODULE_CNFNAME("pmnull")
/* internal structures */
DEF_PMOD_STATIC_DATA;
DEFobjCurrIf(glbl) DEFobjCurrIf(parser) DEFobjCurrIf(datetime)
/* parser instance parameters */
static struct cnfparamdescr parserpdescr[] = {
{"tag", eCmdHdlrString, 0}, {"syslogfacility", eCmdHdlrFacility, 0}, {"syslogseverity", eCmdHdlrSeverity, 0}};
static struct cnfparamblk parserpblk = {CNFPARAMBLK_VERSION, sizeof(parserpdescr) / sizeof(struct cnfparamdescr),
parserpdescr};
struct instanceConf_s {
const char *tag;
size_t lenTag;
int pri;
};
BEGINisCompatibleWithFeature
CODESTARTisCompatibleWithFeature;
if (eFeat == sFEATUREAutomaticSanitazion) iRet = RS_RET_OK;
if (eFeat == sFEATUREAutomaticPRIParsing) iRet = RS_RET_OK;
ENDisCompatibleWithFeature
/* create input instance, set default parameters, and
* add it to the list of instances.
*/
static rsRetVal createInstance(instanceConf_t **pinst) {
instanceConf_t *inst;
DEFiRet;
CHKmalloc(inst = malloc(sizeof(instanceConf_t)));
inst->tag = NULL;
*pinst = inst;
finalize_it:
RETiRet;
}
BEGINfreeParserInst
CODESTARTfreeParserInst;
dbgprintf("pmnull: free parser instance %p\n", pInst);
ENDfreeParserInst
BEGINcheckParserInst
CODESTARTcheckParserInst;
ENDcheckParserInst
BEGINnewParserInst
struct cnfparamvals *pvals = NULL;
int i;
int syslogfacility = 1; /* default as of rfc3164 */
int syslogseverity = 5; /* default as of rfc3164 */
CODESTARTnewParserInst;
DBGPRINTF("newParserInst (pmnull)\n");
inst = NULL;
CHKiRet(createInstance(&inst));
if (lst == NULL) FINALIZE; /* just set defaults, no param block! */
if ((pvals = nvlstGetParams(lst, &parserpblk, NULL)) == NULL) {
ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS);
}
if (Debug) {
dbgprintf("parser param blk in pmnull:\n");
cnfparamsPrint(&parserpblk, pvals);
}
for (i = 0; i < parserpblk.nParams; ++i) {
if (!pvals[i].bUsed) continue;
if (!strcmp(parserpblk.descr[i].name, "tag")) {
inst->tag = (const char *)es_str2cstr(pvals[i].val.d.estr, NULL);
inst->lenTag = strlen(inst->tag);
} else if (!strcmp(parserpblk.descr[i].name, "syslogfacility")) {
syslogfacility = pvals[i].val.d.n;
} else if (!strcmp(parserpblk.descr[i].name, "syslogseverity")) {
syslogseverity = pvals[i].val.d.n;
} else {
dbgprintf(
"pmnull: program error, non-handled "
"param '%s'\n",
parserpblk.descr[i].name);
}
}
inst->pri = syslogfacility * 8 + syslogseverity;
finalize_it:
CODE_STD_FINALIZERnewParserInst if (lst != NULL) cnfparamvalsDestruct(pvals, &parserpblk);
if (iRet != RS_RET_OK) freeParserInst(inst);
ENDnewParserInst
BEGINparse2
CODESTARTparse2;
DBGPRINTF("Message will now be parsed by pmnull\n");
if (pInst->tag != NULL) {
MsgSetTAG(pMsg, (uchar *)pInst->tag, pInst->lenTag);
}
msgSetPRI(pMsg, pInst->pri);
MsgSetMSGoffs(pMsg, 0);
ENDparse2
BEGINmodExit
CODESTARTmodExit;
/* release what we no longer need */
objRelease(glbl, CORE_COMPONENT);
objRelease(parser, CORE_COMPONENT);
objRelease(datetime, CORE_COMPONENT);
ENDmodExit
BEGINqueryEtryPt
CODESTARTqueryEtryPt;
CODEqueryEtryPt_STD_PMOD2_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(parser, CORE_COMPONENT));
CHKiRet(objUse(datetime, CORE_COMPONENT));
DBGPRINTF("pmnull parser init called\n");
ENDmodInit
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