mirror of https://github.com/OISF/suricata
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/* 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;
|
|
}
|
|
|