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1537 lines
51 KiB
C
1537 lines
51 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 Anoop Saldanha <anoopsaldanha@gmail.com>
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*
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* Implements checksum keyword.
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*/
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#include "suricata-common.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-csum.h"
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#include "util-unittest.h"
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#include "util-debug.h"
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/* prototypes for the "ipv4-csum" rule keyword */
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int DetectIPV4CsumMatch(ThreadVars *, DetectEngineThreadCtx *, Packet *,
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Signature *, SigMatch *);
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static int DetectIPV4CsumSetup(DetectEngineCtx *, Signature *, char *);
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void DetectIPV4CsumFree(void *);
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/* prototypes for the "tcpv4-csum" rule keyword */
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int DetectTCPV4CsumMatch(ThreadVars *, DetectEngineThreadCtx *, Packet *,
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Signature *, SigMatch *);
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static int DetectTCPV4CsumSetup(DetectEngineCtx *, Signature *, char *);
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void DetectTCPV4CsumFree(void *);
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/* prototypes for the "tcpv6-csum" rule keyword */
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int DetectTCPV6CsumMatch(ThreadVars *, DetectEngineThreadCtx *, Packet *,
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Signature *, SigMatch *);
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static int DetectTCPV6CsumSetup(DetectEngineCtx *, Signature *, char *);
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void DetectTCPV6CsumFree(void *);
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/* prototypes for the "udpv4-csum" rule keyword */
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int DetectUDPV4CsumMatch(ThreadVars *, DetectEngineThreadCtx *, Packet *,
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Signature *, SigMatch *);
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static int DetectUDPV4CsumSetup(DetectEngineCtx *, Signature *, char *);
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void DetectUDPV4CsumFree(void *);
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/* prototypes for the "udpv6-csum" rule keyword */
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int DetectUDPV6CsumMatch(ThreadVars *, DetectEngineThreadCtx *, Packet *,
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Signature *, SigMatch *);
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static int DetectUDPV6CsumSetup(DetectEngineCtx *, Signature *, char *);
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void DetectUDPV6CsumFree(void *);
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/* prototypes for the "icmpv4-csum" rule keyword */
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int DetectICMPV4CsumMatch(ThreadVars *, DetectEngineThreadCtx *, Packet *,
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Signature *, SigMatch *);
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static int DetectICMPV4CsumSetup(DetectEngineCtx *, Signature *, char *);
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void DetectICMPV4CsumFree(void *);
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/* prototypes for the "icmpv6-csum" rule keyword */
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int DetectICMPV6CsumMatch(ThreadVars *, DetectEngineThreadCtx *, Packet *,
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Signature *, SigMatch *);
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static int DetectICMPV6CsumSetup(DetectEngineCtx *, Signature *, char *);
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void DetectICMPV6CsumFree(void *);
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void DetectCsumRegisterTests(void);
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/**
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* \brief Registers handlers for all the checksum keywords. The checksum
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* keywords that are registered are ipv4-sum, tcpv4-csum, tcpv6-csum,
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* udpv4-csum, udpv6-csum, icmpv4-csum and icmpv6-csum.
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*
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* Each of the checksum keywords implemented here takes 2 arguments -
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* "valid" or "invalid". If the rule keyword in the signature is
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* specified as "valid", the Match function would return TRUE if the
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* checksum for that particular packet and protocol is valid. Similarly
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* for "invalid".
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*
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* The Setup functions takes 4 arguments -
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*
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* DetectEngineCtx * (de_ctx) - A pointer to the detection engine context
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* Signature *(s) - Pointer to signature for the current Signature being
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* parsed from the rules
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* SigMatch * (m) - Pointer to the head of the SigMatchs added to the
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* current Signature being parsed
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* char * (csum_str) - Pointer to a string holding the keyword value
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*
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* The Setup function returns 0 if it successfully parses the keyword
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* value, and -1 otherwise.
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*
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* The Match function takes 5 arguments -
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*
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* ThreadVars * (t) - Pointer to the tv for the detection module instance
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* DetectEngineThreadCtx * (det_ctx) - Pointer to the detection engine
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* thread context
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* Packet * (p) - Pointer to the Packet currently being handled
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* Signature * (s) - Pointer to the Signature, the packet is being
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* currently matched with
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* SigMatch * (m) - Pointer to the keyword structure from the above
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* Signature, the Packet is being currently matched
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* with
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*
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* The Match function returns 1 if the Packet contents match the keyword,
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* and 0 otherwise
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*
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* The Free function takes a single argument -
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*
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* void * (ptr) - Pointer to the DetectCsumData for a keyword
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*/
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void DetectCsumRegister (void)
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{
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sigmatch_table[DETECT_IPV4_CSUM].name = "ipv4-csum";
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sigmatch_table[DETECT_IPV4_CSUM].Match = DetectIPV4CsumMatch;
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sigmatch_table[DETECT_IPV4_CSUM].Setup = DetectIPV4CsumSetup;
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sigmatch_table[DETECT_IPV4_CSUM].Free = DetectIPV4CsumFree;
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sigmatch_table[DETECT_IPV4_CSUM].RegisterTests = DetectCsumRegisterTests;
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sigmatch_table[DETECT_TCPV4_CSUM].name = "tcpv4-csum";
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sigmatch_table[DETECT_TCPV4_CSUM].Match = DetectTCPV4CsumMatch;
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sigmatch_table[DETECT_TCPV4_CSUM].Setup = DetectTCPV4CsumSetup;
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sigmatch_table[DETECT_TCPV4_CSUM].Free = DetectTCPV4CsumFree;
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sigmatch_table[DETECT_TCPV4_CSUM].RegisterTests = NULL;
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sigmatch_table[DETECT_TCPV6_CSUM].name = "tcpv6-csum";
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sigmatch_table[DETECT_TCPV6_CSUM].Match = DetectTCPV6CsumMatch;
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sigmatch_table[DETECT_TCPV6_CSUM].Setup = DetectTCPV6CsumSetup;
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sigmatch_table[DETECT_TCPV6_CSUM].Free = DetectTCPV6CsumFree;
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sigmatch_table[DETECT_TCPV6_CSUM].RegisterTests = NULL;
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sigmatch_table[DETECT_UDPV4_CSUM].name = "udpv4-csum";
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sigmatch_table[DETECT_UDPV4_CSUM].Match = DetectUDPV4CsumMatch;
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sigmatch_table[DETECT_UDPV4_CSUM].Setup = DetectUDPV4CsumSetup;
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sigmatch_table[DETECT_UDPV4_CSUM].Free = DetectUDPV4CsumFree;
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sigmatch_table[DETECT_UDPV4_CSUM].RegisterTests = NULL;
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sigmatch_table[DETECT_UDPV6_CSUM].name = "udpv6-csum";
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sigmatch_table[DETECT_UDPV6_CSUM].Match = DetectUDPV6CsumMatch;
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sigmatch_table[DETECT_UDPV6_CSUM].Setup = DetectUDPV6CsumSetup;
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sigmatch_table[DETECT_UDPV6_CSUM].Free = DetectUDPV6CsumFree;
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sigmatch_table[DETECT_UDPV6_CSUM].RegisterTests = NULL;
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sigmatch_table[DETECT_ICMPV4_CSUM].name = "icmpv4-csum";
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sigmatch_table[DETECT_ICMPV4_CSUM].Match = DetectICMPV4CsumMatch;
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sigmatch_table[DETECT_ICMPV4_CSUM].Setup = DetectICMPV4CsumSetup;
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sigmatch_table[DETECT_ICMPV4_CSUM].Free = DetectICMPV4CsumFree;
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sigmatch_table[DETECT_ICMPV4_CSUM].RegisterTests = NULL;
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sigmatch_table[DETECT_ICMPV6_CSUM].name = "icmpv6-csum";
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sigmatch_table[DETECT_ICMPV6_CSUM].Match = DetectICMPV6CsumMatch;
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sigmatch_table[DETECT_ICMPV6_CSUM].Setup = DetectICMPV6CsumSetup;
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sigmatch_table[DETECT_ICMPV6_CSUM].Free = DetectICMPV6CsumFree;
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sigmatch_table[DETECT_ICMPV6_CSUM].RegisterTests = NULL;
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return;
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}
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/**
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* \brief Validates and parses the argument supplied with the checksum keyword.
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* Accepts strings both with and without quotes, i.e. valid, \"valid\",
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* invalid and \"invalid\"
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*
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* \param key Pointer to a const character string holding the csum keyword value
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* \param cd Pointer to the DetectCsumData structure that holds the keyword
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* value sent as argument
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*
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* \retval 1 the keyvalue has been parsed successfully
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* \retval 0 error
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*/
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static int DetectCsumParseArg(const char *key, DetectCsumData *cd)
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{
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char *str;
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if (key[0] == '\"' && key[strlen(key) - 1] == '\"') {
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str = SCStrdup(key + 1);
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if (str == NULL) {
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goto error;
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}
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str[strlen(key) - 2] = '\0';
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} else {
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str = SCStrdup(key);
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if (str == NULL) {
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goto error;
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}
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}
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if (strcasecmp(str, DETECT_CSUM_VALID) == 0 ||
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strcasecmp(str, DETECT_CSUM_INVALID) == 0) {
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cd->valid = (strcasecmp(key, DETECT_CSUM_VALID) == 0);
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SCFree(str);
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return 1;
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}
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error:
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if (str != NULL)
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SCFree(str);
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return 0;
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}
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/**
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* \brief Checks if the packet sent as the argument, has a valid or invalid
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* ipv4 checksum, based on whether ipv4-csum option for this rule
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* has been supplied with "valid" or "invalid" argument
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*
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* \param t Pointer to the tv for this detection module instance
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* \param det_ctx Pointer to the detection engine thread context
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* \param p Pointer to the Packet currently being matched
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* \param s Pointer to the Signature, the packet is being currently
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* matched with
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* \param m Pointer to the keyword_structure(SigMatch) from the above
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* Signature, the Packet is being currently matched with
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*
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* \retval 1 if the Packet contents match the keyword option; 0 otherwise
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*/
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int DetectIPV4CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
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Packet *p, Signature *s, SigMatch *m)
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{
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DetectCsumData *cd = (DetectCsumData *)m->ctx;
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if (p->ip4h == NULL || PKT_IS_PSEUDOPKT(p))
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return 0;
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if (p->flags & PKT_IGNORE_CHECKSUM) {
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return cd->valid;
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}
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if (p->ip4vars.comp_csum == -1)
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p->ip4vars.comp_csum = IPV4CalculateChecksum((uint16_t *)p->ip4h,
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IPV4_GET_HLEN(p));
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if (p->ip4vars.comp_csum == p->ip4h->ip_csum && cd->valid == 1)
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return 1;
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else if (p->ip4vars.comp_csum != p->ip4h->ip_csum && cd->valid == 0)
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return 1;
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else
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return 0;
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}
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/**
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* \brief Creates a SigMatch for the ipv4-csum keyword being sent as argument,
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* and appends it to the Signature(s). Accepts 2 values for the
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* keyword - "valid" and "invalid", both with and without quotes
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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 signature for the current Signature being parsed
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* from the rules
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* \param csum_str Pointer to the string holding the keyword value
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*
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* \retval 0 on success, -1 on failure
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*/
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static int DetectIPV4CsumSetup(DetectEngineCtx *de_ctx, Signature *s, char *csum_str)
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{
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DetectCsumData *cd = NULL;
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SigMatch *sm = NULL;
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//printf("DetectCsumSetup: \'%s\'\n", csum_str);
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sm = SigMatchAlloc();
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if (sm == NULL)
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goto error;
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sm->type = DETECT_IPV4_CSUM;
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if ( (cd = SCMalloc(sizeof(DetectCsumData))) == NULL)
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goto error;
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memset(cd, 0, sizeof(DetectCsumData));
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if (DetectCsumParseArg(csum_str, cd) == 0)
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goto error;
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sm->ctx = (void *)cd;
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SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_MATCH);
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return 0;
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error:
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if (cd != NULL) DetectIPV4CsumFree(cd);
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if (sm != NULL) SCFree(sm);
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return -1;
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}
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void DetectIPV4CsumFree(void *ptr)
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{
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DetectCsumData *cd = (DetectCsumData *)ptr;
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if (cd != NULL)
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SCFree(cd);
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return;
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}
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/**
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* \brief Checks if the packet sent as the argument, has a valid or invalid
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* tcpv4 checksum, based on whether tcpv4-csum option for this rule
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* has been supplied with "valid" or "invalid" argument
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*
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* \param t Pointer to the tv for this detection module instance
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* \param det_ctx Pointer to the detection engine thread context
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* \param p Pointer to the Packet currently being matched
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* \param s Pointer to the Signature, the packet is being currently
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* matched with
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* \param m Pointer to the keyword_structure(SigMatch) from the above
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* Signature, the Packet is being currently matched with
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*
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* \retval 1 if the Packet contents match the keyword option; 0 otherwise
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*/
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int DetectTCPV4CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
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Packet *p, Signature *s, SigMatch *m)
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{
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DetectCsumData *cd = (DetectCsumData *)m->ctx;
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if (p->ip4h == NULL || p->tcph == NULL || p->proto != IPPROTO_TCP || PKT_IS_PSEUDOPKT(p))
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return 0;
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if (p->flags & PKT_IGNORE_CHECKSUM) {
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return cd->valid;
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}
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if (p->tcpvars.comp_csum == -1)
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p->tcpvars.comp_csum = TCPCalculateChecksum(p->ip4h->s_ip_addrs,
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(uint16_t *)p->tcph,
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(p->payload_len + TCP_GET_HLEN(p)));
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if (p->tcpvars.comp_csum == p->tcph->th_sum && cd->valid == 1)
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return 1;
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else if (p->tcpvars.comp_csum != p->tcph->th_sum && cd->valid == 0)
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return 1;
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else
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return 0;
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}
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|
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/**
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* \brief Creates a SigMatch for the tcpv4-csum keyword being sent as argument,
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* and appends it to the Signature(s). Accepts 2 values for the
|
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* keyword - "valid" and "invalid", both with and without quotes
|
|
*
|
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* \param de_ctx Pointer to the detection engine context
|
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* \param s Pointer to signature for the current Signature being parsed
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* from the rules
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* \param csum_str Pointer to the string holding the keyword value
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*
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* \retval 0 on success, -1 on failure
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*/
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static int DetectTCPV4CsumSetup(DetectEngineCtx *de_ctx, Signature *s, char *csum_str)
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{
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DetectCsumData *cd = NULL;
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SigMatch *sm = NULL;
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//printf("DetectCsumSetup: \'%s\'\n", csum_str);
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sm = SigMatchAlloc();
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if (sm == NULL)
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goto error;
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sm->type = DETECT_TCPV4_CSUM;
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|
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if ( (cd = SCMalloc(sizeof(DetectCsumData))) == NULL)
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goto error;
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memset(cd, 0, sizeof(DetectCsumData));
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|
|
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if (DetectCsumParseArg(csum_str, cd) == 0)
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goto error;
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|
|
|
sm->ctx = (void *)cd;
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|
|
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SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_MATCH);
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|
|
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return 0;
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|
|
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error:
|
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if (cd != NULL) DetectTCPV4CsumFree(cd);
|
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if (sm != NULL) SCFree(sm);
|
|
|
|
return -1;
|
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}
|
|
|
|
void DetectTCPV4CsumFree(void *ptr)
|
|
{
|
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DetectCsumData *cd = (DetectCsumData *)ptr;
|
|
|
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if (cd != NULL)
|
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SCFree(cd);
|
|
|
|
return;
|
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}
|
|
|
|
/**
|
|
* \brief Checks if the packet sent as the argument, has a valid or invalid
|
|
* tcpv6 checksum, based on whether tcpv6-csum option for this rule
|
|
* has been supplied with "valid" or "invalid" argument
|
|
*
|
|
* \param t Pointer to the tv for this detection module instance
|
|
* \param det_ctx Pointer to the detection engine thread context
|
|
* \param p Pointer to the Packet currently being matched
|
|
* \param s Pointer to the Signature, the packet is being currently
|
|
* matched with
|
|
* \param m Pointer to the keyword_structure(SigMatch) from the above
|
|
* Signature, the Packet is being currently matched with
|
|
*
|
|
* \retval 1 if the Packet contents match the keyword option; 0 otherwise
|
|
*/
|
|
int DetectTCPV6CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
|
|
Packet *p, Signature *s, SigMatch *m)
|
|
{
|
|
DetectCsumData *cd = (DetectCsumData *)m->ctx;
|
|
|
|
if (p->ip6h == NULL || p->tcph == NULL || p->proto != IPPROTO_TCP || PKT_IS_PSEUDOPKT(p))
|
|
return 0;
|
|
|
|
if (p->flags & PKT_IGNORE_CHECKSUM) {
|
|
return cd->valid;
|
|
}
|
|
|
|
if (p->tcpvars.comp_csum == -1)
|
|
p->tcpvars.comp_csum = TCPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
|
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(uint16_t *)p->tcph,
|
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(p->payload_len + TCP_GET_HLEN(p)));
|
|
|
|
if (p->tcpvars.comp_csum == p->tcph->th_sum && cd->valid == 1)
|
|
return 1;
|
|
else if (p->tcpvars.comp_csum != p->tcph->th_sum && cd->valid == 0)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* \brief Creates a SigMatch for the tcpv6-csum keyword being sent as argument,
|
|
* and appends it to the Signature(s). Accepts 2 values for the
|
|
* keyword - "valid" and "invalid", both with and without quotes
|
|
*
|
|
* \param de_ctx Pointer to the detection engine context
|
|
* \param s Pointer to signature for the current Signature being parsed
|
|
* from the rules
|
|
* \param csum_str Pointer to the string holding the keyword value
|
|
*
|
|
* \retval 0 on success, -1 on failure
|
|
*/
|
|
static int DetectTCPV6CsumSetup(DetectEngineCtx *de_ctx, Signature *s, char *csum_str)
|
|
{
|
|
DetectCsumData *cd = NULL;
|
|
SigMatch *sm = NULL;
|
|
|
|
//printf("DetectCsumSetup: \'%s\'\n", csum_str);
|
|
|
|
sm = SigMatchAlloc();
|
|
if (sm == NULL)
|
|
goto error;
|
|
|
|
sm->type = DETECT_TCPV6_CSUM;
|
|
|
|
if ( (cd = SCMalloc(sizeof(DetectCsumData))) == NULL)
|
|
goto error;
|
|
memset(cd, 0, sizeof(DetectCsumData));
|
|
|
|
if (DetectCsumParseArg(csum_str, cd) == 0)
|
|
goto error;
|
|
|
|
sm->ctx = (void *)cd;
|
|
|
|
SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_MATCH);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
if (cd != NULL) DetectTCPV6CsumFree(cd);
|
|
if (sm != NULL) SCFree(sm);
|
|
|
|
return -1;
|
|
}
|
|
|
|
void DetectTCPV6CsumFree(void *ptr)
|
|
{
|
|
DetectCsumData *cd = (DetectCsumData *)ptr;
|
|
|
|
if (cd != NULL)
|
|
SCFree(cd);
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* \brief Checks if the packet sent as the argument, has a valid or invalid
|
|
* udpv4 checksum, based on whether udpv4-csum option for this rule
|
|
* has been supplied with "valid" or "invalid" argument
|
|
*
|
|
* \param t Pointer to the tv for this detection module instance
|
|
* \param det_ctx Pointer to the detection engine thread context
|
|
* \param p Pointer to the Packet currently being matched
|
|
* \param s Pointer to the Signature, the packet is being currently
|
|
* matched with
|
|
* \param m Pointer to the keyword_structure(SigMatch) from the above
|
|
* Signature, the Packet is being currently matched with
|
|
*
|
|
* \retval 1 if the Packet contents match the keyword option; 0 otherwise
|
|
*/
|
|
int DetectUDPV4CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
|
|
Packet *p, Signature *s, SigMatch *m)
|
|
{
|
|
DetectCsumData *cd = (DetectCsumData *)m->ctx;
|
|
|
|
if (p->ip4h == NULL || p->udph == NULL || p->proto != IPPROTO_UDP || PKT_IS_PSEUDOPKT(p))
|
|
return 0;
|
|
|
|
if (p->flags & PKT_IGNORE_CHECKSUM) {
|
|
return cd->valid;
|
|
}
|
|
|
|
if (p->udpvars.comp_csum == -1)
|
|
p->udpvars.comp_csum = UDPV4CalculateChecksum(p->ip4h->s_ip_addrs,
|
|
(uint16_t *)p->udph,
|
|
(p->payload_len +
|
|
UDP_HEADER_LEN) );
|
|
|
|
if (p->udpvars.comp_csum == p->udph->uh_sum && cd->valid == 1)
|
|
return 1;
|
|
else if (p->udpvars.comp_csum != p->udph->uh_sum && cd->valid == 0)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* \brief Creates a SigMatch for the udpv4-csum keyword being sent as argument,
|
|
* and appends it to the Signature(s). Accepts 2 values for the
|
|
* keyword - "valid" and "invalid", both with and without quotes
|
|
*
|
|
* \param de_ctx Pointer to the detection engine context
|
|
* \param s Pointer to signature for the current Signature being parsed
|
|
* from the rules
|
|
* \param csum_str Pointer to the string holding the keyword value
|
|
*
|
|
* \retval 0 on success, -1 on failure
|
|
*/
|
|
static int DetectUDPV4CsumSetup(DetectEngineCtx *de_ctx, Signature *s, char *csum_str)
|
|
{
|
|
DetectCsumData *cd = NULL;
|
|
SigMatch *sm = NULL;
|
|
|
|
//printf("DetectCsumSetup: \'%s\'\n", csum_str);
|
|
|
|
sm = SigMatchAlloc();
|
|
if (sm == NULL)
|
|
goto error;
|
|
|
|
sm->type = DETECT_UDPV4_CSUM;
|
|
|
|
if ( (cd = SCMalloc(sizeof(DetectCsumData))) == NULL)
|
|
goto error;
|
|
memset(cd, 0, sizeof(DetectCsumData));
|
|
|
|
if (DetectCsumParseArg(csum_str, cd) == 0)
|
|
goto error;
|
|
|
|
sm->ctx = (void *)cd;
|
|
|
|
SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_MATCH);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
if (cd != NULL) DetectUDPV4CsumFree(cd);
|
|
if (sm != NULL) SCFree(sm);
|
|
|
|
return -1;
|
|
}
|
|
|
|
void DetectUDPV4CsumFree(void *ptr)
|
|
{
|
|
DetectCsumData *cd = (DetectCsumData *)ptr;
|
|
|
|
if (cd != NULL)
|
|
SCFree(cd);
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* \brief Checks if the packet sent as the argument, has a valid or invalid
|
|
* udpv6 checksum, based on whether udpv6-csum option for this rule
|
|
* has been supplied with "valid" or "invalid" argument
|
|
*
|
|
* \param t Pointer to the tv for this detection module instance
|
|
* \param det_ctx Pointer to the detection engine thread context
|
|
* \param p Pointer to the Packet currently being matched
|
|
* \param s Pointer to the Signature, the packet is being currently
|
|
* matched with
|
|
* \param m Pointer to the keyword_structure(SigMatch) from the above
|
|
* Signature, the Packet is being currently matched with
|
|
*
|
|
* \retval 1 if the Packet contents match the keyword option; 0 otherwise
|
|
*/
|
|
int DetectUDPV6CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
|
|
Packet *p, Signature *s, SigMatch *m)
|
|
{
|
|
DetectCsumData *cd = (DetectCsumData *)m->ctx;
|
|
|
|
if (p->ip6h == NULL || p->udph == NULL || p->proto != IPPROTO_UDP || PKT_IS_PSEUDOPKT(p))
|
|
return 0;
|
|
|
|
if (p->flags & PKT_IGNORE_CHECKSUM) {
|
|
return cd->valid;
|
|
}
|
|
|
|
if (p->udpvars.comp_csum == -1)
|
|
p->udpvars.comp_csum = UDPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
|
|
(uint16_t *)p->udph,
|
|
(p->payload_len +
|
|
UDP_HEADER_LEN) );
|
|
|
|
if (p->udpvars.comp_csum == p->udph->uh_sum && cd->valid == 1)
|
|
return 1;
|
|
else if (p->udpvars.comp_csum != p->udph->uh_sum && cd->valid == 0)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* \brief Creates a SigMatch for the udpv6-csum keyword being sent as argument,
|
|
* and appends it to the Signature(s). Accepts 2 values for the
|
|
* keyword - "valid" and "invalid", both with and without quotes
|
|
*
|
|
* \param de_ctx Pointer to the detection engine context
|
|
* \param s Pointer to signature for the current Signature being parsed
|
|
* from the rules
|
|
* \param csum_str Pointer to the string holding the keyword value
|
|
*
|
|
* \retval 0 on success, -1 on failure
|
|
*/
|
|
static int DetectUDPV6CsumSetup(DetectEngineCtx *de_ctx, Signature *s, char *csum_str)
|
|
{
|
|
DetectCsumData *cd = NULL;
|
|
SigMatch *sm = NULL;
|
|
|
|
//printf("DetectCsumSetup: \'%s\'\n", csum_str);
|
|
|
|
sm = SigMatchAlloc();
|
|
if (sm == NULL)
|
|
goto error;
|
|
|
|
sm->type = DETECT_UDPV6_CSUM;
|
|
|
|
if ( (cd = SCMalloc(sizeof(DetectCsumData))) == NULL)
|
|
goto error;
|
|
memset(cd, 0, sizeof(DetectCsumData));
|
|
|
|
if (DetectCsumParseArg(csum_str, cd) == 0)
|
|
goto error;
|
|
|
|
sm->ctx = (void *)cd;
|
|
|
|
SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_MATCH);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
if (cd != NULL) DetectUDPV6CsumFree(cd);
|
|
if (sm != NULL) SCFree(sm);
|
|
|
|
return -1;
|
|
}
|
|
|
|
void DetectUDPV6CsumFree(void *ptr)
|
|
{
|
|
DetectCsumData *cd = (DetectCsumData *)ptr;
|
|
|
|
if (cd != NULL)
|
|
SCFree(cd);
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* \brief Checks if the packet sent as the argument, has a valid or invalid
|
|
* icmpv4 checksum, based on whether icmpv4-csum option for this rule
|
|
* has been supplied with "valid" or "invalid" argument
|
|
*
|
|
* \param t Pointer to the tv for this detection module instance
|
|
* \param det_ctx Pointer to the detection engine thread context
|
|
* \param p Pointer to the Packet currently being matched
|
|
* \param s Pointer to the Signature, the packet is being currently
|
|
* matched with
|
|
* \param m Pointer to the keyword_structure(SigMatch) from the above
|
|
* Signature, the Packet is being currently matched with
|
|
*
|
|
* \retval 1 if the Packet contents match the keyword option; 0 otherwise
|
|
*/
|
|
int DetectICMPV4CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
|
|
Packet *p, Signature *s, SigMatch *m)
|
|
{
|
|
DetectCsumData *cd = (DetectCsumData *)m->ctx;
|
|
|
|
if (p->ip4h == NULL || p->icmpv4h == NULL || p->proto != IPPROTO_ICMP || PKT_IS_PSEUDOPKT(p))
|
|
return 0;
|
|
|
|
if (p->flags & PKT_IGNORE_CHECKSUM) {
|
|
return cd->valid;
|
|
}
|
|
|
|
if (p->icmpv4vars.comp_csum == -1)
|
|
p->icmpv4vars.comp_csum = ICMPV4CalculateChecksum((uint16_t *)p->icmpv4h,
|
|
ntohs(IPV4_GET_RAW_IPLEN(p->ip4h)) -
|
|
IPV4_GET_RAW_HLEN(p->ip4h) * 4);
|
|
|
|
if (p->icmpv4vars.comp_csum == p->icmpv4h->checksum && cd->valid == 1)
|
|
return 1;
|
|
else if (p->icmpv4vars.comp_csum != p->icmpv4h->checksum && cd->valid == 0)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* \brief Creates a SigMatch for the icmpv4-csum keyword being sent as argument,
|
|
* and appends it to the Signature(s). Accepts 2 values for the
|
|
* keyword - "valid" and "invalid", both with and without quotes
|
|
*
|
|
* \param de_ctx Pointer to the detection engine context
|
|
* \param s Pointer to signature for the current Signature being parsed
|
|
* from the rules
|
|
* \param csum_str Pointer to the string holding the keyword value
|
|
*
|
|
* \retval 0 on success, -1 on failure
|
|
*/
|
|
static int DetectICMPV4CsumSetup(DetectEngineCtx *de_ctx, Signature *s, char *csum_str)
|
|
{
|
|
DetectCsumData *cd = NULL;
|
|
SigMatch *sm = NULL;
|
|
|
|
//printf("DetectCsumSetup: \'%s\'\n", csum_str);
|
|
|
|
sm = SigMatchAlloc();
|
|
if (sm == NULL)
|
|
goto error;
|
|
|
|
sm->type = DETECT_ICMPV4_CSUM;
|
|
|
|
if ( (cd = SCMalloc(sizeof(DetectCsumData))) == NULL)
|
|
goto error;
|
|
memset(cd, 0, sizeof(DetectCsumData));
|
|
|
|
if (DetectCsumParseArg(csum_str, cd) == 0)
|
|
goto error;
|
|
|
|
sm->ctx = (void *)cd;
|
|
|
|
SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_MATCH);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
if (cd != NULL) DetectICMPV4CsumFree(cd);
|
|
if (sm != NULL) SCFree(sm);
|
|
|
|
return -1;
|
|
}
|
|
|
|
void DetectICMPV4CsumFree(void *ptr)
|
|
{
|
|
DetectCsumData *cd = (DetectCsumData *)ptr;
|
|
|
|
if (cd != NULL)
|
|
SCFree(cd);
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* \brief Checks if the packet sent as the argument, has a valid or invalid
|
|
* icmpv6 checksum, based on whether icmpv6-csum option for this rule
|
|
* has been supplied with "valid" or "invalid" argument
|
|
*
|
|
* \param t Pointer to the tv for this detection module instance
|
|
* \param det_ctx Pointer to the detection engine thread context
|
|
* \param p Pointer to the Packet currently being matched
|
|
* \param s Pointer to the Signature, the packet is being currently
|
|
* matched with
|
|
* \param m Pointer to the keyword_structure(SigMatch) from the above
|
|
* Signature, the Packet is being currently matched with
|
|
*
|
|
* \retval 1 if the Packet contents match the keyword option; 0 otherwise
|
|
*/
|
|
int DetectICMPV6CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
|
|
Packet *p, Signature *s, SigMatch *m)
|
|
{
|
|
DetectCsumData *cd = (DetectCsumData *)m->ctx;
|
|
|
|
if (p->ip6h == NULL || p->icmpv6h == NULL || p->proto != IPPROTO_ICMPV6 || PKT_IS_PSEUDOPKT(p))
|
|
return 0;
|
|
|
|
if (p->flags & PKT_IGNORE_CHECKSUM) {
|
|
return cd->valid;
|
|
}
|
|
|
|
if (p->icmpv6vars.comp_csum == -1)
|
|
p->icmpv6vars.comp_csum = ICMPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
|
|
(uint16_t *)p->icmpv6h,
|
|
IPV6_GET_PLEN(p));
|
|
|
|
if (p->icmpv6vars.comp_csum == p->icmpv6h->csum && cd->valid == 1)
|
|
return 1;
|
|
else if (p->icmpv6vars.comp_csum != p->icmpv6h->csum && cd->valid == 0)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* \brief Creates a SigMatch for the icmpv6-csum keyword being sent as argument,
|
|
* and appends it to the Signature(s). Accepts 2 values for the
|
|
* keyword - "valid" and "invalid", both with and without quotes
|
|
*
|
|
* \param de_ctx Pointer to the detection engine context
|
|
* \param s Pointer to signature for the current Signature being parsed
|
|
* from the rules
|
|
* \param csum_str Pointer to the string holding the keyword value
|
|
*
|
|
* \retval 0 on success, -1 on failure
|
|
*/
|
|
static int DetectICMPV6CsumSetup(DetectEngineCtx *de_ctx, Signature *s, char *csum_str)
|
|
{
|
|
DetectCsumData *cd = NULL;
|
|
SigMatch *sm = NULL;
|
|
|
|
sm = SigMatchAlloc();
|
|
if (sm == NULL)
|
|
goto error;
|
|
|
|
sm->type = DETECT_ICMPV6_CSUM;
|
|
|
|
if ( (cd = SCMalloc(sizeof(DetectCsumData))) == NULL)
|
|
goto error;
|
|
memset(cd, 0, sizeof(DetectCsumData));
|
|
|
|
if (DetectCsumParseArg(csum_str, cd) == 0)
|
|
goto error;
|
|
|
|
sm->ctx = (void *)cd;
|
|
|
|
SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_MATCH);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
if (cd != NULL) DetectICMPV6CsumFree(cd);
|
|
if (sm != NULL) SCFree(sm);
|
|
|
|
return -1;
|
|
}
|
|
|
|
void DetectICMPV6CsumFree(void *ptr)
|
|
{
|
|
DetectCsumData *cd = (DetectCsumData *)ptr;
|
|
|
|
if (cd != NULL)
|
|
SCFree(cd);
|
|
|
|
return;
|
|
}
|
|
|
|
/* ---------------------------------- Unit Tests --------------------------- */
|
|
|
|
#ifdef UNITTESTS
|
|
|
|
int DetectCsumIPV4ValidArgsTestParse01(void)
|
|
{
|
|
Signature s;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectIPV4CsumSetup(NULL, &s, "\"valid\"") == 0);
|
|
result &= (DetectIPV4CsumSetup(NULL, &s, "\"invalid\"") == 0);
|
|
result &= (DetectIPV4CsumSetup(NULL, &s, "\"vaLid\"") == 0);
|
|
result &= (DetectIPV4CsumSetup(NULL, &s, "\"VALID\"") == 0);
|
|
result &= (DetectIPV4CsumSetup(NULL, &s, "\"iNvaLid\"") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectIPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumIPV4InValidArgsTestParse02(void)
|
|
{
|
|
Signature s;
|
|
int result = -1;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectIPV4CsumSetup(NULL, &s, "vaid") == -1);
|
|
result &= (DetectIPV4CsumSetup(NULL, &s, "invaalid") == -1);
|
|
result &= (DetectIPV4CsumSetup(NULL, &s, "vaLiid") == -1);
|
|
result &= (DetectIPV4CsumSetup(NULL, &s, "VALieD") == -1);
|
|
result &= (DetectIPV4CsumSetup(NULL, &s, "iNvamid") == -1);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectIPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumIPV4ValidArgsTestParse03(void)
|
|
{
|
|
Signature s;
|
|
DetectCsumData *cd = NULL;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectIPV4CsumSetup(NULL, &s, "valid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 1);
|
|
}
|
|
DetectIPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = NULL;
|
|
|
|
result &= (DetectIPV4CsumSetup(NULL, &s, "INVALID") == 0);
|
|
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 0);
|
|
}
|
|
DetectIPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumICMPV4ValidArgsTestParse01(void)
|
|
{
|
|
Signature s;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectICMPV4CsumSetup(NULL, &s, "valid") == 0);
|
|
result &= (DetectICMPV4CsumSetup(NULL, &s, "invalid") == 0);
|
|
result &= (DetectICMPV4CsumSetup(NULL, &s, "vaLid") == 0);
|
|
result &= (DetectICMPV4CsumSetup(NULL, &s, "VALID") == 0);
|
|
result &= (DetectICMPV4CsumSetup(NULL, &s, "iNvaLid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectICMPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumICMPV4InValidArgsTestParse02(void) {
|
|
Signature s;
|
|
int result = -1;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectICMPV4CsumSetup(NULL, &s, "vaid") == -1);
|
|
result &= (DetectICMPV4CsumSetup(NULL, &s, "invaalid") == -1);
|
|
result &= (DetectICMPV4CsumSetup(NULL, &s, "vaLiid") == -1);
|
|
result &= (DetectICMPV4CsumSetup(NULL, &s, "VALieD") == -1);
|
|
result &= (DetectICMPV4CsumSetup(NULL, &s, "iNvamid") == -1);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectICMPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumICMPV4ValidArgsTestParse03(void) {
|
|
Signature s;
|
|
DetectCsumData *cd = NULL;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectICMPV4CsumSetup(NULL, &s, "valid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 1);
|
|
}
|
|
DetectICMPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = NULL;
|
|
|
|
result &= (DetectICMPV4CsumSetup(NULL, &s, "INVALID") == 0);
|
|
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 0);
|
|
}
|
|
DetectICMPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumTCPV4ValidArgsTestParse01(void)
|
|
{
|
|
Signature s;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectTCPV4CsumSetup(NULL, &s, "valid") == 0);
|
|
result &= (DetectTCPV4CsumSetup(NULL, &s, "invalid") == 0);
|
|
result &= (DetectTCPV4CsumSetup(NULL, &s, "vaLid") == 0);
|
|
result &= (DetectTCPV4CsumSetup(NULL, &s, "VALID") == 0);
|
|
result &= (DetectTCPV4CsumSetup(NULL, &s, "iNvaLid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectTCPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumTCPV4InValidArgsTestParse02(void) {
|
|
Signature s;
|
|
int result = -1;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectTCPV4CsumSetup(NULL, &s, "vaid") == -1);
|
|
result &= (DetectTCPV4CsumSetup(NULL, &s, "invaalid") == -1);
|
|
result &= (DetectTCPV4CsumSetup(NULL, &s, "vaLiid") == -1);
|
|
result &= (DetectTCPV4CsumSetup(NULL, &s, "VALieD") == -1);
|
|
result &= (DetectTCPV4CsumSetup(NULL, &s, "iNvamid") == -1);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectTCPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumTCPV4ValidArgsTestParse03(void) {
|
|
Signature s;
|
|
DetectCsumData *cd = NULL;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectTCPV4CsumSetup(NULL, &s, "valid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 1);
|
|
}
|
|
DetectTCPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = NULL;
|
|
|
|
result &= (DetectTCPV4CsumSetup(NULL, &s, "INVALID") == 0);
|
|
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 0);
|
|
}
|
|
DetectTCPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumUDPV4ValidArgsTestParse01(void)
|
|
{
|
|
Signature s;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectUDPV4CsumSetup(NULL, &s, "valid") == 0);
|
|
result &= (DetectUDPV4CsumSetup(NULL, &s, "invalid") == 0);
|
|
result &= (DetectUDPV4CsumSetup(NULL, &s, "vaLid") == 0);
|
|
result &= (DetectUDPV4CsumSetup(NULL, &s, "VALID") == 0);
|
|
result &= (DetectUDPV4CsumSetup(NULL, &s, "iNvaLid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectUDPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumUDPV4InValidArgsTestParse02(void) {
|
|
Signature s;
|
|
int result = -1;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectUDPV4CsumSetup(NULL, &s, "vaid") == -1);
|
|
result &= (DetectUDPV4CsumSetup(NULL, &s, "invaalid") == -1);
|
|
result &= (DetectUDPV4CsumSetup(NULL, &s, "vaLiid") == -1);
|
|
result &= (DetectUDPV4CsumSetup(NULL, &s, "VALieD") == -1);
|
|
result &= (DetectUDPV4CsumSetup(NULL, &s, "iNvamid") == -1);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectUDPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumUDPV4ValidArgsTestParse03(void) {
|
|
Signature s;
|
|
DetectCsumData *cd = NULL;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectUDPV4CsumSetup(NULL, &s, "valid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 1);
|
|
}
|
|
DetectUDPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = NULL;
|
|
|
|
result &= (DetectUDPV4CsumSetup(NULL, &s, "INVALID") == 0);
|
|
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 0);
|
|
}
|
|
DetectUDPV4CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumTCPV6ValidArgsTestParse01(void)
|
|
{
|
|
Signature s;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectTCPV6CsumSetup(NULL, &s, "valid") == 0);
|
|
result &= (DetectTCPV6CsumSetup(NULL, &s, "invalid") == 0);
|
|
result &= (DetectTCPV6CsumSetup(NULL, &s, "vaLid") == 0);
|
|
result &= (DetectTCPV6CsumSetup(NULL, &s, "VALID") == 0);
|
|
result &= (DetectTCPV6CsumSetup(NULL, &s, "iNvaLid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectTCPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumTCPV6InValidArgsTestParse02(void) {
|
|
Signature s;
|
|
int result = -1;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectTCPV6CsumSetup(NULL, &s, "vaid") == -1);
|
|
result &= (DetectTCPV6CsumSetup(NULL, &s, "invaalid") == -1);
|
|
result &= (DetectTCPV6CsumSetup(NULL, &s, "vaLiid") == -1);
|
|
result &= (DetectTCPV6CsumSetup(NULL, &s, "VALieD") == -1);
|
|
result &= (DetectTCPV6CsumSetup(NULL, &s, "iNvamid") == -1);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectTCPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumTCPV6ValidArgsTestParse03(void) {
|
|
Signature s;
|
|
DetectCsumData *cd = NULL;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectTCPV6CsumSetup(NULL, &s, "valid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 1);
|
|
}
|
|
DetectTCPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = NULL;
|
|
|
|
result &= (DetectTCPV6CsumSetup(NULL, &s, "INVALID") == 0);
|
|
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 0);
|
|
}
|
|
DetectTCPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumUDPV6ValidArgsTestParse01(void)
|
|
{
|
|
Signature s;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectUDPV6CsumSetup(NULL, &s, "valid") == 0);
|
|
result &= (DetectUDPV6CsumSetup(NULL, &s, "invalid") == 0);
|
|
result &= (DetectUDPV6CsumSetup(NULL, &s, "vaLid") == 0);
|
|
result &= (DetectUDPV6CsumSetup(NULL, &s, "VALID") == 0);
|
|
result &= (DetectUDPV6CsumSetup(NULL, &s, "iNvaLid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectUDPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumUDPV6InValidArgsTestParse02(void) {
|
|
Signature s;
|
|
int result = -1;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectUDPV6CsumSetup(NULL, &s, "vaid") == -1);
|
|
result &= (DetectUDPV6CsumSetup(NULL, &s, "invaalid") == -1);
|
|
result &= (DetectUDPV6CsumSetup(NULL, &s, "vaLiid") == -1);
|
|
result &= (DetectUDPV6CsumSetup(NULL, &s, "VALieD") == -1);
|
|
result &= (DetectUDPV6CsumSetup(NULL, &s, "iNvamid") == -1);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectUDPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumUDPV6ValidArgsTestParse03(void) {
|
|
Signature s;
|
|
DetectCsumData *cd = NULL;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectUDPV6CsumSetup(NULL, &s, "valid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 1);
|
|
}
|
|
DetectUDPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = NULL;
|
|
|
|
result &= (DetectUDPV6CsumSetup(NULL, &s, "INVALID") == 0);
|
|
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 0);
|
|
}
|
|
DetectUDPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumICMPV6ValidArgsTestParse01(void)
|
|
{
|
|
Signature s;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectICMPV6CsumSetup(NULL, &s, "valid") == 0);
|
|
result &= (DetectICMPV6CsumSetup(NULL, &s, "invalid") == 0);
|
|
result &= (DetectICMPV6CsumSetup(NULL, &s, "vaLid") == 0);
|
|
result &= (DetectICMPV6CsumSetup(NULL, &s, "VALID") == 0);
|
|
result &= (DetectICMPV6CsumSetup(NULL, &s, "iNvaLid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectICMPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumICMPV6InValidArgsTestParse02(void) {
|
|
Signature s;
|
|
int result = -1;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectICMPV6CsumSetup(NULL, &s, "vaid") == -1);
|
|
result &= (DetectICMPV6CsumSetup(NULL, &s, "invaalid") == -1);
|
|
result &= (DetectICMPV6CsumSetup(NULL, &s, "vaLiid") == -1);
|
|
result &= (DetectICMPV6CsumSetup(NULL, &s, "VALieD") == -1);
|
|
result &= (DetectICMPV6CsumSetup(NULL, &s, "iNvamid") == -1);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
DetectICMPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int DetectCsumICMPV6ValidArgsTestParse03(void) {
|
|
Signature s;
|
|
DetectCsumData *cd = NULL;
|
|
int result = 0;
|
|
SigMatch *temp = NULL;
|
|
|
|
memset(&s, 0, sizeof(Signature));
|
|
|
|
result = (DetectICMPV6CsumSetup(NULL, &s, "valid") == 0);
|
|
|
|
while (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 1);
|
|
}
|
|
DetectICMPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = NULL;
|
|
|
|
result &= (DetectICMPV6CsumSetup(NULL, &s, "INVALID") == 0);
|
|
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH] != NULL) {
|
|
if (s.sm_lists[DETECT_SM_LIST_MATCH]->ctx != NULL) {
|
|
cd = (DetectCsumData *)s.sm_lists[DETECT_SM_LIST_MATCH]->ctx;
|
|
result &= (cd->valid == 0);
|
|
}
|
|
DetectICMPV6CsumFree(s.sm_lists[DETECT_SM_LIST_MATCH]->ctx);
|
|
temp = s.sm_lists[DETECT_SM_LIST_MATCH];
|
|
s.sm_lists[DETECT_SM_LIST_MATCH] = s.sm_lists[DETECT_SM_LIST_MATCH]->next;
|
|
SCFree(temp);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
#endif /* UNITTESTS */
|
|
|
|
void DetectCsumRegisterTests(void)
|
|
{
|
|
|
|
#ifdef UNITTESTS
|
|
|
|
UtRegisterTest("DetectCsumIPV4ValidArgsTestParse01",
|
|
DetectCsumIPV4ValidArgsTestParse01, 1);
|
|
UtRegisterTest("DetectCsumIPV4InValidArgsTestParse02",
|
|
DetectCsumIPV4InValidArgsTestParse02, 1);
|
|
UtRegisterTest("DetectCsumIPV4ValidArgsTestParse03",
|
|
DetectCsumIPV4ValidArgsTestParse03, 1);
|
|
|
|
UtRegisterTest("DetectCsumICMPV4ValidArgsTestParse01",
|
|
DetectCsumICMPV4ValidArgsTestParse01, 1);
|
|
UtRegisterTest("DetectCsumICMPV4InValidArgsTestParse02",
|
|
DetectCsumICMPV4InValidArgsTestParse02, 1);
|
|
UtRegisterTest("DetectCsumICMPV4ValidArgsTestParse03",
|
|
DetectCsumICMPV4ValidArgsTestParse03, 1);
|
|
|
|
UtRegisterTest("DetectCsumTCPV4ValidArgsTestParse01",
|
|
DetectCsumTCPV4ValidArgsTestParse01, 1);
|
|
UtRegisterTest("DetectCsumTCPV4InValidArgsTestParse02",
|
|
DetectCsumTCPV4InValidArgsTestParse02, 1);
|
|
UtRegisterTest("DetectCsumTCPV4ValidArgsTestParse03",
|
|
DetectCsumTCPV4ValidArgsTestParse03, 1);
|
|
|
|
UtRegisterTest("DetectCsumUDPV4ValidArgsTestParse01",
|
|
DetectCsumUDPV4ValidArgsTestParse01, 1);
|
|
UtRegisterTest("DetectCsumUDPV4InValidArgsTestParse02",
|
|
DetectCsumUDPV4InValidArgsTestParse02, 1);
|
|
UtRegisterTest("DetectCsumUDPV4ValidArgsTestParse03",
|
|
DetectCsumUDPV4ValidArgsTestParse03, 1);
|
|
|
|
UtRegisterTest("DetectCsumUDPV6ValidArgsTestParse01",
|
|
DetectCsumUDPV6ValidArgsTestParse01, 1);
|
|
UtRegisterTest("DetectCsumUDPV6InValidArgsTestParse02",
|
|
DetectCsumUDPV6InValidArgsTestParse02, 1);
|
|
UtRegisterTest("DetectCsumUDPV6ValidArgsTestParse03",
|
|
DetectCsumUDPV6ValidArgsTestParse03, 1);
|
|
|
|
UtRegisterTest("DetectCsumTCPV6ValidArgsTestParse01",
|
|
DetectCsumTCPV6ValidArgsTestParse01, 1);
|
|
UtRegisterTest("DetectCsumTCPV6InValidArgsTestParse02",
|
|
DetectCsumTCPV6InValidArgsTestParse02, 1);
|
|
UtRegisterTest("DetectCsumTCPV6ValidArgsTestParse03",
|
|
DetectCsumTCPV6ValidArgsTestParse03, 1);
|
|
|
|
UtRegisterTest("DetectCsumICMPV6ValidArgsTestParse01",
|
|
DetectCsumICMPV6ValidArgsTestParse01, 1);
|
|
UtRegisterTest("DetectCsumICMPV6InValidArgsTestParse02",
|
|
DetectCsumICMPV6InValidArgsTestParse02, 1);
|
|
UtRegisterTest("DetectCsumICMPV6ValidArgsTestParse03",
|
|
DetectCsumICMPV6ValidArgsTestParse03, 1);
|
|
|
|
#endif /* UNITTESTS */
|
|
|
|
}
|