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/* Copyright (C) 2007-2010 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 Victor Julien <victor@inliniac.net>
*
* Implements the rev keyword
*/
#include "suricata-common.h"
#include "detect.h"
#include "util-debug.h"
#include "util-error.h"
static int DetectRevSetup (DetectEngineCtx *, Signature *, char *);
void DetectRevRegister (void)
{
sigmatch_table[DETECT_REV].name = "rev";
sigmatch_table[DETECT_REV].desc = "set version of the rule";
sigmatch_table[DETECT_REV].url = "https://redmine.openinfosecfoundation.org/projects/suricata/wiki/Meta-settings#Rev-Revision";
sigmatch_table[DETECT_REV].Match = NULL;
sigmatch_table[DETECT_REV].Setup = DetectRevSetup;
sigmatch_table[DETECT_REV].Free = NULL;
sigmatch_table[DETECT_REV].RegisterTests = NULL;
}
static int DetectRevSetup (DetectEngineCtx *de_ctx, Signature *s, char *rawstr)
{
char *str = rawstr;
char dubbed = 0;
/* strip "'s */
if (rawstr[0] == '\"' && rawstr[strlen(rawstr)-1] == '\"') {
str = SCStrdup(rawstr+1);
if (unlikely(str == NULL))
return -1;
str[strlen(rawstr)-2] = '\0';
dubbed = 1;
}
unsigned long rev = 0;
char *endptr = NULL;
rev = strtoul(rawstr, &endptr, 10);
if (endptr == NULL || *endptr != '\0') {
SCLogError(SC_ERR_INVALID_SIGNATURE, "invalid character as arg "
"to rev keyword");
goto error;
}
if (rev >= UINT_MAX) {
SCLogError(SC_ERR_INVALID_NUMERIC_VALUE, "rev value to high, max %u", UINT_MAX);
goto error;
}
s->rev = (uint32_t)rev;
if (dubbed)
SCFree(str);
return 0;
error:
if (dubbed)
SCFree(str);
return -1;
}
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