/* omshell.c
 * This is the implementation of the build-in shell output module.
 *
 * NOTE: read comments in module-template.h to understand how this file
 *       works!
 *
 * shell support was initially written by bkalkbrenner 2005-09-20
 *
 * File begun on 2007-07-20 by RGerhards (extracted from syslogd.c)
 * This file is under development and has not yet arrived at being fully
 * self-contained and a real object. So far, it is mostly an excerpt
 * of the "old" message code without any modifications. However, it
 * helps to have things at the right place one we go to the meat of it.
 *
 * Copyright 2007 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 <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "conf.h"
#include "syslogd-types.h"
#include "srUtils.h"
#include "omshell.h"
#include "module-template.h"
#include "errmsg.h"

MODULE_TYPE_OUTPUT

/* internal structures
 */
DEF_OMOD_STATIC_DATA
DEFobjCurrIf(errmsg)

typedef struct _instanceData {
	uchar	progName[MAXFNAME]; /* program  to execute */
} instanceData;


BEGINcreateInstance
CODESTARTcreateInstance
ENDcreateInstance


BEGINisCompatibleWithFeature
CODESTARTisCompatibleWithFeature
	if(eFeat == sFEATURERepeatedMsgReduction)
		iRet = RS_RET_OK;
ENDisCompatibleWithFeature


BEGINfreeInstance
CODESTARTfreeInstance
ENDfreeInstance


BEGINdbgPrintInstInfo
CODESTARTdbgPrintInstInfo
	printf("%s", pData->progName);
ENDdbgPrintInstInfo


BEGINtryResume
CODESTARTtryResume
ENDtryResume

BEGINdoAction
CODESTARTdoAction
	/* TODO: using pData->progName is not clean from the point of
	 * modularization. We'll change that as we go ahead with modularization.
	 * rgerhards, 2007-07-20
	 */
	dbgprintf("\n");
	if(execProg((uchar*) pData->progName, 1, ppString[0]) == 0)
	 	errmsg.LogError(0, NO_ERRCODE, "Executing program '%s' failed", (char*)pData->progName);
ENDdoAction


BEGINparseSelectorAct
CODESTARTparseSelectorAct
CODE_STD_STRING_REQUESTparseSelectorAct(1)
	/* yes, the if below is redundant, but I need it now. Will go away as
	 * the code further changes.  -- rgerhards, 2007-07-25
	 */
	if(*p == '^') {
		if((iRet = createInstance(&pData)) != RS_RET_OK)
			goto finalize_it;
	}


	switch (*p)
	{
	case '^': /* bkalkbrenner 2005-09-20: execute shell command */
		dbgprintf("exec\n");
		++p;
		iRet = cflineParseFileName(p, (uchar*) pData->progName, *ppOMSR, 0, OMSR_NO_RQD_TPL_OPTS,
			                   (uchar*)"RSYSLOG_TraditionalFileFormat");
		break;
	default:
		iRet = RS_RET_CONFLINE_UNPROCESSED;
		break;
	}

CODE_STD_FINALIZERparseSelectorAct
ENDparseSelectorAct


BEGINmodExit
CODESTARTmodExit
ENDmodExit


BEGINqueryEtryPt
CODESTARTqueryEtryPt
CODEqueryEtryPt_STD_OMOD_QUERIES
ENDqueryEtryPt


BEGINmodInit(Shell)
CODESTARTmodInit
	*ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */
CODEmodInit_QueryRegCFSLineHdlr
	CHKiRet(objUse(errmsg, CORE_COMPONENT));
ENDmodInit

/*
 * vi:set ai:
 */
