diff options
author | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:21:41 -0700 |
---|---|---|
committer | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:21:41 -0700 |
commit | 8879b125d26e8db1a5633de5a9c692eb2d1c4f83 (patch) | |
tree | c7259d85a991b83dfa85ab2e339360669fc1f58e /framework/src/suricata/src/decode-icmpv4.c | |
parent | 13d05bc8458758ee39cb829098241e89616717ee (diff) |
suricata checkin based on commit id a4bce14770beee46a537eda3c3f6e8e8565d5d0a
Change-Id: I9a214fa0ee95e58fc640e50bd604dac7f42db48f
Diffstat (limited to 'framework/src/suricata/src/decode-icmpv4.c')
-rw-r--r-- | framework/src/suricata/src/decode-icmpv4.c | 784 |
1 files changed, 784 insertions, 0 deletions
diff --git a/framework/src/suricata/src/decode-icmpv4.c b/framework/src/suricata/src/decode-icmpv4.c new file mode 100644 index 00000000..5af012ce --- /dev/null +++ b/framework/src/suricata/src/decode-icmpv4.c @@ -0,0 +1,784 @@ +/* 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 */ +} +/** + * @} + */ |