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/* Copyright (C) 2012-2020 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* This program 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
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* \file
*
* \author Xavier Lange <xrlange@gmail.com>
*
*/
#include "suricata-common.h"
#include "threads.h"
#include "decode.h"
#include "detect.h"
#include "detect-parse.h"
#include "detect-pkt-data.h"
#include "detect-engine.h"
#include "detect-engine-mpm.h"
#include "detect-engine-state.h"
#include "flow.h"
#include "flow-var.h"
#include "flow-util.h"
#include "util-debug.h"
#include "util-spm-bm.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
static int DetectPktDataSetup (DetectEngineCtx *, Signature *, const char *);
#ifdef UNITTESTS
static void DetectPktDataTestRegister(void);
#endif
/**
* \brief Registration function for keyword: file_data
*/
void DetectPktDataRegister(void)
{
sigmatch_table[DETECT_PKT_DATA].name = "pkt_data";
sigmatch_table[DETECT_PKT_DATA].Setup = DetectPktDataSetup;
#ifdef UNITTESTS
sigmatch_table[DETECT_PKT_DATA].RegisterTests = DetectPktDataTestRegister;
#endif
sigmatch_table[DETECT_PKT_DATA].flags = SIGMATCH_NOOPT;
}
/**
* \brief this function is used to parse pkt_data options
* \brief into the current signature
*
* \param de_ctx pointer to the Detection Engine Context
* \param s pointer to the current signature
* \param unused unused for keyword with SIGMATCH_NOOPT set
*
* \retval 0 on Success
* \retval -1 on Failure
*/
static int DetectPktDataSetup (DetectEngineCtx *de_ctx, Signature *s, const char *unused)
{
SCEnter();
if (s->init_data->transforms.cnt) {
SCLogError("previous transforms not consumed before 'pkt_data'");
SCReturnInt(-1);
}
s->init_data->list = DETECT_SM_LIST_NOTSET;
SCReturnInt(0);
}
#ifdef UNITTESTS
/************************************Unittests*********************************/
static int DetectPktDataTest02(void)
{
DetectEngineCtx *de_ctx = DetectEngineCtxInit();
FAIL_IF_NULL(de_ctx);
de_ctx->flags |= DE_QUIET;
Signature *sig = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any "
"(file_data; compress_whitespace; "
" pkt_data; content:\"in pkt data\"; sid:1;)");
FAIL_IF_NOT_NULL(sig);
DetectEngineCtxFree(de_ctx);
PASS;
}
static void DetectPktDataTestRegister(void)
{
UtRegisterTest("DetectPktDataTest02", DetectPktDataTest02);
}
#endif
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