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92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
12 years ago
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/* Copyright (C) 2013 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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* \ingroup dnslayer
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*
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* @{
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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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#include "suricata-common.h"
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#include "threads.h"
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#include "debug.h"
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#include "decode.h"
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#include "detect.h"
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#include "detect-parse.h"
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#include "detect-engine.h"
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#include "detect-engine-mpm.h"
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#include "detect-content.h"
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#include "detect-pcre.h"
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#include "flow.h"
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#include "flow-var.h"
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#include "util-debug.h"
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#include "util-unittest.h"
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#include "util-spm.h"
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#include "util-print.h"
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#include "app-layer.h"
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#include "detect-dns-query.h"
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static int DetectDnsQuerySetup (DetectEngineCtx *, Signature *, char *);
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/**
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* \brief Registration function for keyword: http_uri
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*/
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void DetectDnsQueryRegister (void) {
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sigmatch_table[DETECT_AL_DNS_QUERY].name = "dns_query";
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sigmatch_table[DETECT_AL_DNS_QUERY].desc = "content modifier to match specifically and only on the DNS query-buffer";
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sigmatch_table[DETECT_AL_DNS_QUERY].Match = NULL;
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sigmatch_table[DETECT_AL_DNS_QUERY].AppLayerMatch = NULL;
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sigmatch_table[DETECT_AL_DNS_QUERY].alproto = ALPROTO_DNS;
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sigmatch_table[DETECT_AL_DNS_QUERY].Setup = DetectDnsQuerySetup;
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sigmatch_table[DETECT_AL_DNS_QUERY].Free = NULL;
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sigmatch_table[DETECT_AL_DNS_QUERY].RegisterTests = NULL;
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sigmatch_table[DETECT_AL_DNS_QUERY].flags |= SIGMATCH_PAYLOAD;
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}
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/**
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* \brief this function setups the dns_query modifier keyword used in the rule
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*
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* \param de_ctx Pointer to the Detection Engine Context
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* \param s Pointer to the Signature to which the current keyword belongs
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* \param str Should hold an empty string always
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*
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* \retval 0 On success
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* \retval -1 On failure
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*/
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static int DetectDnsQuerySetup(DetectEngineCtx *de_ctx, Signature *s, char *str)
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{
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return DetectEngineContentModifierBufferSetup(de_ctx, s, str,
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DETECT_AL_DNS_QUERY,
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DETECT_SM_LIST_DNSQUERY_MATCH,
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ALPROTO_DNS, NULL);
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}
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