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78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
/* Copyright (C) 2007-2010 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Victor Julien <victor@inliniac.net>
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*
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* Implements the sid keyword
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*/
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#include "suricata-common.h"
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#include "detect.h"
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#include "util-debug.h"
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#include "util-error.h"
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static int DetectSidSetup (DetectEngineCtx *, Signature *, char *);
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void DetectSidRegister (void) {
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sigmatch_table[DETECT_SID].name = "sid";
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sigmatch_table[DETECT_SID].desc = "set rule id";
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sigmatch_table[DETECT_SID].url = "https://redmine.openinfosecfoundation.org/projects/suricata/wiki/Meta-settings#Sid-signature-id";
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sigmatch_table[DETECT_SID].Match = NULL;
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sigmatch_table[DETECT_SID].Setup = DetectSidSetup;
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sigmatch_table[DETECT_SID].Free = NULL;
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sigmatch_table[DETECT_SID].RegisterTests = NULL;
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}
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static int DetectSidSetup (DetectEngineCtx *de_ctx, Signature *s, char *sidstr)
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{
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char *str = sidstr;
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char dubbed = 0;
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/* strip "'s */
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if (sidstr[0] == '\"' && sidstr[strlen(sidstr)-1] == '\"') {
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str = SCStrdup(sidstr+1);
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if (unlikely(str == NULL))
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return -1;
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str[strlen(sidstr)-2] = '\0';
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dubbed = 1;
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}
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unsigned long id = 0;
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char *endptr = NULL;
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id = strtoul(sidstr, &endptr, 10);
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if (endptr == NULL || *endptr != '\0') {
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SCLogError(SC_ERR_INVALID_SIGNATURE, "Saw an invalid character as arg "
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"to sid keyword");
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goto error;
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}
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s->id = (uint32_t)id;
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if (dubbed)
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SCFree(str);
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return 0;
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error:
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if (dubbed)
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SCFree(str);
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return -1;
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}
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