diff options
Diffstat (limited to 'framework/src/suricata/src/decode-icmpv4.c')
-rw-r--r-- | framework/src/suricata/src/decode-icmpv4.c | 784 |
1 files changed, 0 insertions, 784 deletions
diff --git a/framework/src/suricata/src/decode-icmpv4.c b/framework/src/suricata/src/decode-icmpv4.c deleted file mode 100644 index 5af012ce..00000000 --- a/framework/src/suricata/src/decode-icmpv4.c +++ /dev/null @@ -1,784 +0,0 @@ -/* 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. - */ - -/** - * \ingroup decode - * - * @{ - */ - - -/** - * \file - * - * \author Victor Julien <victor@inliniac.net> - * - * Decode ICMPv4 - */ - -#include "suricata-common.h" - -#include "decode.h" -#include "decode-events.h" -#include "decode-ipv4.h" -#include "decode-icmpv4.h" - -#include "flow.h" - -#include "util-unittest.h" -#include "util-unittest-helper.h" -#include "util-debug.h" -#include "util-print.h" - -/** - * Note, this is the IP header, plus a bit of the original packet, not the whole thing! - */ -void DecodePartialIPV4( Packet* p, uint8_t* partial_packet, uint16_t len ) -{ - /** Check the sizes, the header must fit at least */ - if (len < IPV4_HEADER_LEN) { - SCLogDebug("DecodePartialIPV4: ICMPV4_IPV4_TRUNC_PKT"); - ENGINE_SET_INVALID_EVENT(p, ICMPV4_IPV4_TRUNC_PKT); - return; - } - - IPV4Hdr *icmp4_ip4h = (IPV4Hdr*)partial_packet; - - /** Check the embedded version */ - if (IPV4_GET_RAW_VER(icmp4_ip4h) != 4) { - /** Check the embedded version */ - SCLogDebug("DecodePartialIPV4: ICMPv4 contains Unknown IPV4 version " - "ICMPV4_IPV4_UNKNOWN_VER"); - ENGINE_SET_INVALID_EVENT(p, ICMPV4_IPV4_UNKNOWN_VER); - return; - } - - /** We need to fill icmpv4vars */ - p->icmpv4vars.emb_ipv4h = icmp4_ip4h; - - /** Get the IP address from the contained packet */ - p->icmpv4vars.emb_ip4_src = IPV4_GET_RAW_IPSRC(icmp4_ip4h); - p->icmpv4vars.emb_ip4_dst = IPV4_GET_RAW_IPDST(icmp4_ip4h); - - p->icmpv4vars.emb_ip4_hlen=IPV4_GET_RAW_HLEN(icmp4_ip4h) << 2; - - switch (IPV4_GET_RAW_IPPROTO(icmp4_ip4h)) { - case IPPROTO_TCP: - if (len >= IPV4_HEADER_LEN + TCP_HEADER_LEN ) { - p->icmpv4vars.emb_tcph = (TCPHdr*)(partial_packet + IPV4_HEADER_LEN); - p->icmpv4vars.emb_sport = ntohs(p->icmpv4vars.emb_tcph->th_sport); - p->icmpv4vars.emb_dport = ntohs(p->icmpv4vars.emb_tcph->th_dport); - p->icmpv4vars.emb_ip4_proto = IPPROTO_TCP; - - SCLogDebug("DecodePartialIPV4: ICMPV4->IPV4->TCP header sport: " - "%"PRIu8" dport %"PRIu8"", p->icmpv4vars.emb_sport, - p->icmpv4vars.emb_dport); - } else if (len >= IPV4_HEADER_LEN + 4) { - /* only access th_sport and th_dport */ - TCPHdr *emb_tcph = (TCPHdr*)(partial_packet + IPV4_HEADER_LEN); - - p->icmpv4vars.emb_tcph = NULL; - p->icmpv4vars.emb_sport = ntohs(emb_tcph->th_sport); - p->icmpv4vars.emb_dport = ntohs(emb_tcph->th_dport); - p->icmpv4vars.emb_ip4_proto = IPPROTO_TCP; - SCLogDebug("DecodePartialIPV4: ICMPV4->IPV4->TCP partial header sport: " - "%"PRIu8" dport %"PRIu8"", p->icmpv4vars.emb_sport, - p->icmpv4vars.emb_dport); - } else { - SCLogDebug("DecodePartialIPV4: Warning, ICMPV4->IPV4->TCP " - "header Didn't fit in the packet!"); - p->icmpv4vars.emb_sport = 0; - p->icmpv4vars.emb_dport = 0; - } - - break; - case IPPROTO_UDP: - if (len >= IPV4_HEADER_LEN + UDP_HEADER_LEN ) { - p->icmpv4vars.emb_udph = (UDPHdr*)(partial_packet + IPV4_HEADER_LEN); - p->icmpv4vars.emb_sport = ntohs(p->icmpv4vars.emb_udph->uh_sport); - p->icmpv4vars.emb_dport = ntohs(p->icmpv4vars.emb_udph->uh_dport); - p->icmpv4vars.emb_ip4_proto = IPPROTO_UDP; - - SCLogDebug("DecodePartialIPV4: ICMPV4->IPV4->UDP header sport: " - "%"PRIu8" dport %"PRIu8"", p->icmpv4vars.emb_sport, - p->icmpv4vars.emb_dport); - } else { - SCLogDebug("DecodePartialIPV4: Warning, ICMPV4->IPV4->UDP " - "header Didn't fit in the packet!"); - p->icmpv4vars.emb_sport = 0; - p->icmpv4vars.emb_dport = 0; - } - - break; - case IPPROTO_ICMP: - p->icmpv4vars.emb_icmpv4h = (ICMPV4Hdr*)(partial_packet + IPV4_HEADER_LEN); - p->icmpv4vars.emb_sport = 0; - p->icmpv4vars.emb_dport = 0; - p->icmpv4vars.emb_ip4_proto = IPPROTO_ICMP; - - SCLogDebug("DecodePartialIPV4: ICMPV4->IPV4->ICMP header"); - - break; - } - - /* debug print */ -#ifdef DEBUG - char s[16], d[16]; - PrintInet(AF_INET, &(p->icmpv4vars.emb_ip4_src), s, sizeof(s)); - PrintInet(AF_INET, &(p->icmpv4vars.emb_ip4_dst), d, sizeof(d)); - SCLogDebug("ICMPv4 embedding IPV4 %s->%s - PROTO: %" PRIu32 " ID: %" PRIu32 "", s,d, - IPV4_GET_RAW_IPPROTO(icmp4_ip4h), IPV4_GET_RAW_IPID(icmp4_ip4h)); -#endif - - return; - -} - -/** DecodeICMPV4 - * \brief Main ICMPv4 decoding function - */ -int DecodeICMPV4(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p, uint8_t *pkt, uint16_t len, PacketQueue *pq) -{ - StatsIncr(tv, dtv->counter_icmpv4); - - if (len < ICMPV4_HEADER_LEN) { - ENGINE_SET_INVALID_EVENT(p, ICMPV4_PKT_TOO_SMALL); - return TM_ECODE_FAILED; - } - - p->icmpv4h = (ICMPV4Hdr *)pkt; - - SCLogDebug("ICMPV4 TYPE %" PRIu32 " CODE %" PRIu32 "", p->icmpv4h->type, p->icmpv4h->code); - - p->proto = IPPROTO_ICMP; - p->type = p->icmpv4h->type; - p->code = p->icmpv4h->code; - p->payload = pkt + ICMPV4_HEADER_LEN; - p->payload_len = len - ICMPV4_HEADER_LEN; - - ICMPV4ExtHdr* icmp4eh = (ICMPV4ExtHdr*) p->icmpv4h; - - switch (p->icmpv4h->type) - { - case ICMP_ECHOREPLY: - p->icmpv4vars.id=icmp4eh->id; - p->icmpv4vars.seq=icmp4eh->seq; - if (p->icmpv4h->code!=0) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } - break; - - case ICMP_DEST_UNREACH: - if (p->icmpv4h->code > NR_ICMP_UNREACH) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } else { - /* parse IP header plus 64 bytes */ - if (len > ICMPV4_HEADER_PKT_OFFSET) { - DecodePartialIPV4( p, (uint8_t *)(pkt + ICMPV4_HEADER_PKT_OFFSET), len - ICMPV4_HEADER_PKT_OFFSET ); - - /* ICMP ICMP_DEST_UNREACH influence TCP/UDP flows */ - if (ICMPV4_DEST_UNREACH_IS_VALID(p)) { - FlowHandlePacket(tv, dtv, p); - } - } - } - - - break; - - case ICMP_SOURCE_QUENCH: - if (p->icmpv4h->code!=0) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } else { - // parse IP header plus 64 bytes - if (len >= ICMPV4_HEADER_PKT_OFFSET) - DecodePartialIPV4( p, (uint8_t*) (pkt + ICMPV4_HEADER_PKT_OFFSET), len - ICMPV4_HEADER_PKT_OFFSET ); - } - break; - - case ICMP_REDIRECT: - if (p->icmpv4h->code>ICMP_REDIR_HOSTTOS) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } else { - // parse IP header plus 64 bytes - if (len > ICMPV4_HEADER_PKT_OFFSET) - DecodePartialIPV4( p, (uint8_t*) (pkt + ICMPV4_HEADER_PKT_OFFSET), len - ICMPV4_HEADER_PKT_OFFSET ); - } - break; - - case ICMP_ECHO: - p->icmpv4vars.id=icmp4eh->id; - p->icmpv4vars.seq=icmp4eh->seq; - if (p->icmpv4h->code!=0) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } - break; - - case ICMP_TIME_EXCEEDED: - if (p->icmpv4h->code>ICMP_EXC_FRAGTIME) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } else { - // parse IP header plus 64 bytes - if (len > ICMPV4_HEADER_PKT_OFFSET) - DecodePartialIPV4( p, (uint8_t*) (pkt + ICMPV4_HEADER_PKT_OFFSET), len - ICMPV4_HEADER_PKT_OFFSET ); - } - break; - - case ICMP_PARAMETERPROB: - if (p->icmpv4h->code!=0) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } else { - // parse IP header plus 64 bytes - if (len > ICMPV4_HEADER_PKT_OFFSET) - DecodePartialIPV4( p, (uint8_t*) (pkt + ICMPV4_HEADER_PKT_OFFSET), len - ICMPV4_HEADER_PKT_OFFSET ); - } - break; - - case ICMP_TIMESTAMP: - p->icmpv4vars.id=icmp4eh->id; - p->icmpv4vars.seq=icmp4eh->seq; - if (p->icmpv4h->code!=0) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } - break; - - case ICMP_TIMESTAMPREPLY: - p->icmpv4vars.id=icmp4eh->id; - p->icmpv4vars.seq=icmp4eh->seq; - if (p->icmpv4h->code!=0) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } - break; - - case ICMP_INFO_REQUEST: - p->icmpv4vars.id=icmp4eh->id; - p->icmpv4vars.seq=icmp4eh->seq; - if (p->icmpv4h->code!=0) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } - break; - - case ICMP_INFO_REPLY: - p->icmpv4vars.id=icmp4eh->id; - p->icmpv4vars.seq=icmp4eh->seq; - if (p->icmpv4h->code!=0) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } - break; - - case ICMP_ADDRESS: - p->icmpv4vars.id=icmp4eh->id; - p->icmpv4vars.seq=icmp4eh->seq; - if (p->icmpv4h->code!=0) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } - break; - - case ICMP_ADDRESSREPLY: - p->icmpv4vars.id=icmp4eh->id; - p->icmpv4vars.seq=icmp4eh->seq; - if (p->icmpv4h->code!=0) { - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_CODE); - } - break; - - default: - ENGINE_SET_EVENT(p,ICMPV4_UNKNOWN_TYPE); - - } - - return TM_ECODE_OK; -} - -#ifdef UNITTESTS - -/** DecodeICMPV4test01 - * \brief - * \retval 1 Expected test value - */ -static int DecodeICMPV4test01(void) -{ - uint8_t raw_icmpv4[] = { - 0x08, 0x00, 0x78, 0x47, 0xfc, 0x55, 0x00, 0x04, - 0x52, 0xab, 0x86, 0x4a, 0x84, 0x50, 0x0e, 0x00, - 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, - 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, - 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, - 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, 0xab, - 0xab }; - Packet *p = SCMalloc(SIZE_OF_PACKET); - if (unlikely(p == NULL)) - return 0; - ThreadVars tv; - DecodeThreadVars dtv; - int ret = 0; - IPV4Hdr ip4h; - - memset(&ip4h, 0, sizeof(IPV4Hdr)); - memset(&tv, 0, sizeof(ThreadVars)); - memset(p, 0, SIZE_OF_PACKET); - memset(&ip4h, 0, sizeof(IPV4Hdr)); - memset(&dtv, 0, sizeof(DecodeThreadVars)); - - FlowInitConfig(FLOW_QUIET); - - p->src.family = AF_INET; - p->dst.family = AF_INET; - p->src.addr_data32[0] = UTHSetIPv4Address("4.3.2.1");; - p->dst.addr_data32[0] = UTHSetIPv4Address("1.2.3.4");; - - ip4h.s_ip_src.s_addr = p->src.addr_data32[0]; - ip4h.s_ip_dst.s_addr = p->dst.addr_data32[0]; - p->ip4h = &ip4h; - - DecodeICMPV4(&tv, &dtv, p, raw_icmpv4, sizeof(raw_icmpv4), NULL); - - if (NULL!=p->icmpv4h) { - if (p->icmpv4h->type==8 && p->icmpv4h->code==0) { - ret = 1; - } - } - - FlowShutdown(); - SCFree(p); - return ret; -} - -/** DecodeICMPV4test02 - * \brief - * \retval 1 Expected test value - */ -static int DecodeICMPV4test02(void) -{ - uint8_t raw_icmpv4[] = { - 0x00, 0x00, 0x57, 0x64, 0xfb, 0x55, 0x00, 0x03, - 0x43, 0xab, 0x86, 0x4a, 0xf6, 0x49, 0x02, 0x00, - 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, - 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, - 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, - 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, - 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f }; - Packet *p = SCMalloc(SIZE_OF_PACKET); - if (unlikely(p == NULL)) - return 0; - ThreadVars tv; - DecodeThreadVars dtv; - int ret = 0; - IPV4Hdr ip4h; - - memset(&ip4h, 0, sizeof(IPV4Hdr)); - memset(&tv, 0, sizeof(ThreadVars)); - memset(p, 0, SIZE_OF_PACKET); - memset(&dtv, 0, sizeof(DecodeThreadVars)); - - FlowInitConfig(FLOW_QUIET); - - p->src.family = AF_INET; - p->dst.family = AF_INET; - p->src.addr_data32[0] = UTHSetIPv4Address("4.3.2.1");; - p->dst.addr_data32[0] = UTHSetIPv4Address("1.2.3.4");; - - ip4h.s_ip_src.s_addr = p->src.addr_data32[0]; - ip4h.s_ip_dst.s_addr = p->dst.addr_data32[0]; - p->ip4h = &ip4h; - - DecodeICMPV4(&tv, &dtv, p, raw_icmpv4, sizeof(raw_icmpv4), NULL); - - if (NULL!=p->icmpv4h) { - if (p->icmpv4h->type==0 && p->icmpv4h->code==0) { - ret = 1; - } - } - - FlowShutdown(); - SCFree(p); - return ret; -} - -/** DecodeICMPV4test03 - * \brief TTL exceeded - * \retval Expected test value: 1 - */ -static int DecodeICMPV4test03(void) -{ - uint8_t raw_icmpv4[] = { - 0x0b, 0x00, 0x6a, 0x3d, 0x00, 0x00, 0x00, 0x00, - 0x45, 0x00, 0x00, 0x3c, 0x64, 0x15, 0x00, 0x00, - 0x01, 0x11, 0xde, 0xfd, 0xc0, 0xa8, 0x01, 0x0d, - 0xd1, 0x55, 0xe3, 0x93, 0x8b, 0x12, 0x82, 0xaa, - 0x00, 0x28, 0x7c, 0xdd }; - Packet *p = SCMalloc(SIZE_OF_PACKET); - if (unlikely(p == NULL)) - return 0; - ThreadVars tv; - DecodeThreadVars dtv; - int ret = 0; - IPV4Hdr ip4h; - - memset(&ip4h, 0, sizeof(IPV4Hdr)); - memset(&tv, 0, sizeof(ThreadVars)); - memset(p, 0, SIZE_OF_PACKET); - memset(&dtv, 0, sizeof(DecodeThreadVars)); - - FlowInitConfig(FLOW_QUIET); - - p->src.family = AF_INET; - p->dst.family = AF_INET; - p->src.addr_data32[0] = UTHSetIPv4Address("4.3.2.1");; - p->dst.addr_data32[0] = UTHSetIPv4Address("1.2.3.4");; - - ip4h.s_ip_src.s_addr = p->src.addr_data32[0]; - ip4h.s_ip_dst.s_addr = p->dst.addr_data32[0]; - p->ip4h = &ip4h; - - DecodeICMPV4(&tv, &dtv, p, raw_icmpv4, sizeof(raw_icmpv4), NULL); - - if (NULL == p->icmpv4h) { - printf("NULL == p->icmpv4h: "); - goto end; - } - - /* check it's type 11 code 0 */ - if (p->icmpv4h->type != 11 || p->icmpv4h->code != 0) { - printf("p->icmpv4h->type %u, p->icmpv4h->code %u: ", - p->icmpv4h->type, p->icmpv4h->code); - goto end; - } - - /* check it's source port 35602 to port 33450 */ - if (p->icmpv4vars.emb_sport != 35602 || - p->icmpv4vars.emb_dport != 33450) { - printf("p->icmpv4vars.emb_sport %u, p->icmpv4vars.emb_dport %u: ", - p->icmpv4vars.emb_sport, p->icmpv4vars.emb_dport); - goto end; - } - - /* check the src,dst IPs contained inside */ - char s[16], d[16]; - - PrintInet(AF_INET, &(p->icmpv4vars.emb_ip4_src), s, sizeof(s)); - PrintInet(AF_INET, &(p->icmpv4vars.emb_ip4_dst), d, sizeof(d)); - - /* ICMPv4 embedding IPV4 192.168.1.13->209.85.227.147 pass */ - if (strcmp(s, "192.168.1.13") == 0 && strcmp(d, "209.85.227.147") == 0) { - ret = 1; - } - else { - printf("s %s, d %s: ", s, d); - } - -end: - FlowShutdown(); - SCFree(p); - return ret; -} - -/** DecodeICMPV4test04 - * \brief dest. unreachable, administratively prohibited - * \retval 1 Expected test value - */ -static int DecodeICMPV4test04(void) -{ - uint8_t raw_icmpv4[] = { - 0x03, 0x0a, 0x36, 0xc3, 0x00, 0x00, 0x00, 0x00, - 0x45, 0x00, 0x00, 0x3c, 0x62, 0xee, 0x40, 0x00, - 0x33, 0x06, 0xb4, 0x8f, 0xc0, 0xa8, 0x01, 0x0d, - 0x58, 0x60, 0x16, 0x29, 0xb1, 0x0a, 0x00, 0x32, - 0x3e, 0x36, 0x38, 0x7c, 0x00, 0x00, 0x00, 0x00, - 0xa0, 0x02, 0x16, 0xd0, 0x72, 0x04, 0x00, 0x00, - 0x02, 0x04, 0x05, 0x8a, 0x04, 0x02, 0x08, 0x0a }; - Packet *p = SCMalloc(SIZE_OF_PACKET); - if (unlikely(p == NULL)) - return 0; - ThreadVars tv; - DecodeThreadVars dtv; - int ret = 0; - IPV4Hdr ip4h; - - memset(&ip4h, 0, sizeof(IPV4Hdr)); - memset(&tv, 0, sizeof(ThreadVars)); - memset(p, 0, SIZE_OF_PACKET); - memset(&dtv, 0, sizeof(DecodeThreadVars)); - - FlowInitConfig(FLOW_QUIET); - - p->src.family = AF_INET; - p->dst.family = AF_INET; - p->src.addr_data32[0] = UTHSetIPv4Address("4.3.2.1");; - p->dst.addr_data32[0] = UTHSetIPv4Address("1.2.3.4");; - - ip4h.s_ip_src.s_addr = p->src.addr_data32[0]; - ip4h.s_ip_dst.s_addr = p->dst.addr_data32[0]; - p->ip4h = &ip4h; - - DecodeICMPV4(&tv, &dtv, p, raw_icmpv4, sizeof(raw_icmpv4), NULL); - - if (NULL == p->icmpv4h) { - goto end; - } - - /* check the type,code pair is correct - type 3, code 10 */ - if (p->icmpv4h->type != 3 || p->icmpv4h->code != 10) { - goto end; - } - - /* check it's src port 45322 to dst port 50 */ - if (p->icmpv4vars.emb_sport != 45322 || - p->icmpv4vars.emb_dport != 50) { - goto end; - } - - // check the src,dst IPs contained inside - char s[16], d[16]; - - PrintInet(AF_INET, &(p->icmpv4vars.emb_ip4_src), s, sizeof(s)); - PrintInet(AF_INET, &(p->icmpv4vars.emb_ip4_dst), d, sizeof(d)); - - // ICMPv4 embedding IPV4 192.168.1.13->88.96.22.41 - if (strcmp(s, "192.168.1.13") == 0 && strcmp(d, "88.96.22.41") == 0) { - ret = 1; - } - -end: - FlowShutdown(); - SCFree(p); - return ret; -} - -/** DecodeICMPV4test05 - * \brief dest. unreachable, administratively prohibited - * \retval 1 Expected test value - */ -static int DecodeICMPV4test05(void) -{ - uint8_t raw_icmpv4[] = { - 0x0b, 0x00, 0x5c, 0x46, 0x00, 0x00, 0x00, 0x00, 0x45, - 0x00, 0x00, 0x30, 0x02, 0x17, 0x40, 0x00, 0x01, 0x06, - 0xd6, 0xbd, 0xc0, 0xa8, 0x02, 0x05, 0x3d, 0x23, 0xa1, - 0x23, 0x04, 0x18, 0x00, 0x50, 0xd2, 0x08, 0xc2, 0x48, - }; - Packet *p = SCMalloc(SIZE_OF_PACKET); - if (unlikely(p == NULL)) - return 0; - ThreadVars tv; - DecodeThreadVars dtv; - int ret = 0; - IPV4Hdr ip4h; - - memset(&ip4h, 0, sizeof(IPV4Hdr)); - memset(&tv, 0, sizeof(ThreadVars)); - memset(p, 0, SIZE_OF_PACKET); - memset(&dtv, 0, sizeof(DecodeThreadVars)); - - FlowInitConfig(FLOW_QUIET); - - p->src.family = AF_INET; - p->dst.family = AF_INET; - p->src.addr_data32[0] = UTHSetIPv4Address("4.3.2.1");; - p->dst.addr_data32[0] = UTHSetIPv4Address("1.2.3.4");; - - ip4h.s_ip_src.s_addr = p->src.addr_data32[0]; - ip4h.s_ip_dst.s_addr = p->dst.addr_data32[0]; - p->ip4h = &ip4h; - - DecodeICMPV4(&tv, &dtv, p, raw_icmpv4, sizeof(raw_icmpv4), NULL); - - if (NULL == p->icmpv4h) { - goto end; - } - - /* check the type,code pair is correct - type 11, code 0 */ - if (p->icmpv4h->type != 11 || p->icmpv4h->code != 0) { - goto end; - } - - /* check it's src port 1048 to dst port 80 */ - if (p->icmpv4vars.emb_sport != 1048 || - p->icmpv4vars.emb_dport != 80) { - goto end; - } - - // check the src,dst IPs contained inside - char s[16], d[16]; - - PrintInet(AF_INET, &(p->icmpv4vars.emb_ip4_src), s, sizeof(s)); - PrintInet(AF_INET, &(p->icmpv4vars.emb_ip4_dst), d, sizeof(d)); - - // ICMPv4 embedding IPV4 192.168.2.5->61.35.161.35 - if (strcmp(s, "192.168.2.5") == 0 && strcmp(d, "61.35.161.35") == 0) { - ret = 1; - } - -end: - FlowShutdown(); - SCFree(p); - return ret; -} - -static int ICMPV4CalculateValidChecksumtest05(void) -{ - uint16_t csum = 0; - - uint8_t raw_icmpv4[] = { - 0x08, 0x00, 0xab, 0x9b, 0x7f, 0x2b, 0x05, 0x2c, - 0x3f, 0x72, 0x93, 0x4a, 0x00, 0x4d, 0x0a, 0x00, - 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, - 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, - 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, - 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, - 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, - 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37}; - - csum = *( ((uint16_t *)raw_icmpv4) + 1); - return (csum == ICMPV4CalculateChecksum((uint16_t *)raw_icmpv4, sizeof(raw_icmpv4))); -} - -static int ICMPV4CalculateInvalidChecksumtest06(void) -{ - uint16_t csum = 0; - - uint8_t raw_icmpv4[] = { - 0x08, 0x00, 0xab, 0x9b, 0x7f, 0x2b, 0x05, 0x2c, - 0x3f, 0x72, 0x93, 0x4a, 0x00, 0x4d, 0x0a, 0x00, - 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, - 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, - 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, - 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, - 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, - 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x38}; - - csum = *( ((uint16_t *)raw_icmpv4) + 1); - return (csum == ICMPV4CalculateChecksum((uint16_t *)raw_icmpv4, sizeof(raw_icmpv4))); -} - -static int ICMPV4InvalidType07(void) -{ - - uint8_t raw_icmpv4[] = { - 0xff, 0x00, 0xab, 0x9b, 0x7f, 0x2b, 0x05, 0x2c, - 0x3f, 0x72, 0x93, 0x4a, 0x00, 0x4d, 0x0a, 0x00, - 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, - 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, - 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, - 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, - 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, - 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x38}; - - Packet *p = SCMalloc(SIZE_OF_PACKET); - if (unlikely(p == NULL)) - return 0; - ThreadVars tv; - DecodeThreadVars dtv; - int ret = 0; - IPV4Hdr ip4h; - - memset(&ip4h, 0, sizeof(IPV4Hdr)); - memset(&tv, 0, sizeof(ThreadVars)); - memset(p, 0, SIZE_OF_PACKET); - memset(&dtv, 0, sizeof(DecodeThreadVars)); - - FlowInitConfig(FLOW_QUIET); - - p->src.family = AF_INET; - p->dst.family = AF_INET; - p->src.addr_data32[0] = UTHSetIPv4Address("4.3.2.1");; - p->dst.addr_data32[0] = UTHSetIPv4Address("1.2.3.4");; - - ip4h.s_ip_src.s_addr = p->src.addr_data32[0]; - ip4h.s_ip_dst.s_addr = p->dst.addr_data32[0]; - p->ip4h = &ip4h; - - DecodeICMPV4(&tv, &dtv, p, raw_icmpv4, sizeof(raw_icmpv4), NULL); - - if(ENGINE_ISSET_EVENT(p,ICMPV4_UNKNOWN_TYPE)) { - ret = 1; - } - - FlowShutdown(); - SCFree(p); - return ret; -} - -/** DecodeICMPV4test08 - * \brief - * \retval 1 Expected test value - what we really want is not to segfault - */ -static int DecodeICMPV4test08(void) -{ - uint8_t raw_icmpv4[] = { - 0x08, 0x00, 0x78, 0x47, 0xfc, 0x55, 0x00, 0x00 - }; - Packet *p = SCMalloc(SIZE_OF_PACKET); - if (unlikely(p == NULL)) - return 0; - ThreadVars tv; - DecodeThreadVars dtv; - int ret = 0; - IPV4Hdr ip4h; - - memset(&ip4h, 0, sizeof(IPV4Hdr)); - memset(&tv, 0, sizeof(ThreadVars)); - memset(p, 0, SIZE_OF_PACKET); - memset(&dtv, 0, sizeof(DecodeThreadVars)); - - FlowInitConfig(FLOW_QUIET); - - p->src.family = AF_INET; - p->dst.family = AF_INET; - p->src.addr_data32[0] = UTHSetIPv4Address("4.3.2.1");; - p->dst.addr_data32[0] = UTHSetIPv4Address("1.2.3.4");; - - ip4h.s_ip_src.s_addr = p->src.addr_data32[0]; - ip4h.s_ip_dst.s_addr = p->dst.addr_data32[0]; - p->ip4h = &ip4h; - - DecodeICMPV4(&tv, &dtv, p, raw_icmpv4, sizeof(raw_icmpv4), NULL); - - if (NULL!=p->icmpv4h) { - if (p->icmpv4h->type==8 && p->icmpv4h->code==0) { - ret = 1; - } - } - - FlowShutdown(); - SCFree(p); - return ret; -} -#endif /* UNITTESTS */ - -/** - * \brief Registers ICMPV4 unit test - */ -void DecodeICMPV4RegisterTests(void) -{ -#ifdef UNITTESTS - UtRegisterTest("DecodeICMPV4test01", DecodeICMPV4test01, 1); - UtRegisterTest("DecodeICMPV4test02", DecodeICMPV4test02, 1); - UtRegisterTest("DecodeICMPV4test03", DecodeICMPV4test03, 1); - UtRegisterTest("DecodeICMPV4test04", DecodeICMPV4test04, 1); - UtRegisterTest("DecodeICMPV4test05", DecodeICMPV4test05, 1); - UtRegisterTest("ICMPV4CalculateValidChecksumtest05", - ICMPV4CalculateValidChecksumtest05, 1); - UtRegisterTest("ICMPV4CalculateInvalidChecksumtest06", - ICMPV4CalculateInvalidChecksumtest06, 0); - UtRegisterTest("DecodeICMPV4InvalidType", ICMPV4InvalidType07, 1); - UtRegisterTest("DecodeICMPV4test08", DecodeICMPV4test08, 1); -#endif /* UNITTESTS */ -} -/** - * @} - */ |