diff options
Diffstat (limited to 'framework/src/suricata/src/decode-vlan.c')
| -rw-r--r-- | framework/src/suricata/src/decode-vlan.c | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/framework/src/suricata/src/decode-vlan.c b/framework/src/suricata/src/decode-vlan.c deleted file mode 100644 index 59495594..00000000 --- a/framework/src/suricata/src/decode-vlan.c +++ /dev/null @@ -1,279 +0,0 @@ -/* Copyright (C) 2007-2013 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 Breno Silva <breno.silva@gmail.com> - * - * Decode 802.1q - */ - -#include "suricata-common.h" -#include "decode.h" -#include "decode-vlan.h" -#include "decode-events.h" - -#include "flow.h" - -#include "util-unittest.h" -#include "util-debug.h" - -#include "pkt-var.h" -#include "util-profiling.h" -#include "host.h" - -/** - * \internal - * \brief this function is used to decode IEEE802.1q packets - * - * \param tv pointer to the thread vars - * \param dtv pointer code thread vars - * \param p pointer to the packet struct - * \param pkt pointer to the raw packet - * \param len packet len - * \param pq pointer to the packet queue - * - */ -int DecodeVLAN(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p, uint8_t *pkt, uint16_t len, PacketQueue *pq) -{ - uint32_t proto; - - if (p->vlan_idx == 0) - StatsIncr(tv, dtv->counter_vlan); - else if (p->vlan_idx == 1) - StatsIncr(tv, dtv->counter_vlan_qinq); - - if(len < VLAN_HEADER_LEN) { - ENGINE_SET_INVALID_EVENT(p, VLAN_HEADER_TOO_SMALL); - return TM_ECODE_FAILED; - } - if (p->vlan_idx >= 2) { - ENGINE_SET_EVENT(p,VLAN_HEADER_TOO_MANY_LAYERS); - return TM_ECODE_FAILED; - } - - p->vlanh[p->vlan_idx] = (VLANHdr *)pkt; - if(p->vlanh[p->vlan_idx] == NULL) - return TM_ECODE_FAILED; - - proto = GET_VLAN_PROTO(p->vlanh[p->vlan_idx]); - - SCLogDebug("p %p pkt %p VLAN protocol %04x VLAN PRI %d VLAN CFI %d VLAN ID %d Len: %" PRId32 "", - p, pkt, proto, GET_VLAN_PRIORITY(p->vlanh[p->vlan_idx]), - GET_VLAN_CFI(p->vlanh[p->vlan_idx]), GET_VLAN_ID(p->vlanh[p->vlan_idx]), len); - - /* only store the id for flow hashing if it's not disabled. */ - if (dtv->vlan_disabled == 0) - p->vlan_id[p->vlan_idx] = (uint16_t)GET_VLAN_ID(p->vlanh[p->vlan_idx]); - - p->vlan_idx++; - - switch (proto) { - case ETHERNET_TYPE_IP: - DecodeIPV4(tv, dtv, p, pkt + VLAN_HEADER_LEN, - len - VLAN_HEADER_LEN, pq); - break; - case ETHERNET_TYPE_IPV6: - DecodeIPV6(tv, dtv, p, pkt + VLAN_HEADER_LEN, - len - VLAN_HEADER_LEN, pq); - break; - case ETHERNET_TYPE_PPPOE_SESS: - DecodePPPOESession(tv, dtv, p, pkt + VLAN_HEADER_LEN, - len - VLAN_HEADER_LEN, pq); - break; - case ETHERNET_TYPE_PPPOE_DISC: - DecodePPPOEDiscovery(tv, dtv, p, pkt + VLAN_HEADER_LEN, - len - VLAN_HEADER_LEN, pq); - break; - case ETHERNET_TYPE_VLAN: - case ETHERNET_TYPE_8021AD: - if (p->vlan_idx >= 2) { - ENGINE_SET_EVENT(p,VLAN_HEADER_TOO_MANY_LAYERS); - return TM_ECODE_OK; - } else { - DecodeVLAN(tv, dtv, p, pkt + VLAN_HEADER_LEN, - len - VLAN_HEADER_LEN, pq); - } - break; - default: - SCLogDebug("unknown VLAN type: %" PRIx32 "", proto); - ENGINE_SET_INVALID_EVENT(p, VLAN_UNKNOWN_TYPE); - return TM_ECODE_OK; - } - - return TM_ECODE_OK; -} - -uint16_t DecodeVLANGetId(const Packet *p, uint8_t layer) -{ - if (unlikely(layer > 1)) - return 0; - - if (p->vlanh[layer] == NULL && (p->vlan_idx >= (layer + 1))) { - return p->vlan_id[layer]; - } else { - return GET_VLAN_ID(p->vlanh[layer]); - } - return 0; -} - -#ifdef UNITTESTS -/** \todo Must GRE+VLAN and Multi-Vlan packets to - * create more tests - */ - -/** - * \test DecodeVLANTest01 test if vlan header is too small. - * - * \retval 1 on success - * \retval 0 on failure - */ -static int DecodeVLANtest01 (void) -{ - uint8_t raw_vlan[] = { 0x00, 0x20, 0x08 }; - Packet *p = PacketGetFromAlloc(); - if (unlikely(p == NULL)) - return 0; - ThreadVars tv; - DecodeThreadVars dtv; - - memset(&tv, 0, sizeof(ThreadVars)); - memset(&dtv, 0, sizeof(DecodeThreadVars)); - - DecodeVLAN(&tv, &dtv, p, raw_vlan, sizeof(raw_vlan), NULL); - - if(ENGINE_ISSET_EVENT(p,VLAN_HEADER_TOO_SMALL)) { - SCFree(p); - return 1; - } - - SCFree(p); - return 0; -} - -/** - * \test DecodeVLANTest02 test if vlan header has unknown type. - * - * \retval 1 on success - * \retval 0 on failure - */ -static int DecodeVLANtest02 (void) -{ - uint8_t raw_vlan[] = { - 0x00, 0x20, 0x01, 0x00, 0x45, 0x00, 0x00, 0x34, - 0x3b, 0x36, 0x40, 0x00, 0x40, 0x06, 0xb7, 0xc9, - 0x83, 0x97, 0x20, 0x81, 0x83, 0x97, 0x20, 0x15, - 0x04, 0x8a, 0x17, 0x70, 0x4e, 0x14, 0xdf, 0x55, - 0x4d, 0x3d, 0x5a, 0x61, 0x80, 0x10, 0x6b, 0x50, - 0x3c, 0x4c, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, - 0x00, 0x04, 0xf0, 0xc8, 0x01, 0x99, 0xa3, 0xf3}; - Packet *p = PacketGetFromAlloc(); - if (unlikely(p == NULL)) - return 0; - ThreadVars tv; - DecodeThreadVars dtv; - - memset(&tv, 0, sizeof(ThreadVars)); - memset(&dtv, 0, sizeof(DecodeThreadVars)); - - DecodeVLAN(&tv, &dtv, p, raw_vlan, sizeof(raw_vlan), NULL); - - - if(ENGINE_ISSET_EVENT(p,VLAN_UNKNOWN_TYPE)) { - SCFree(p); - return 1; - } - - SCFree(p); - return 0; -} - -/** - * \test DecodeVLANTest02 test a good vlan header. - * - * \retval 1 on success - * \retval 0 on failure - */ -static int DecodeVLANtest03 (void) -{ - uint8_t raw_vlan[] = { - 0x00, 0x20, 0x08, 0x00, 0x45, 0x00, 0x00, 0x34, - 0x3b, 0x36, 0x40, 0x00, 0x40, 0x06, 0xb7, 0xc9, - 0x83, 0x97, 0x20, 0x81, 0x83, 0x97, 0x20, 0x15, - 0x04, 0x8a, 0x17, 0x70, 0x4e, 0x14, 0xdf, 0x55, - 0x4d, 0x3d, 0x5a, 0x61, 0x80, 0x10, 0x6b, 0x50, - 0x3c, 0x4c, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, - 0x00, 0x04, 0xf0, 0xc8, 0x01, 0x99, 0xa3, 0xf3}; - Packet *p = PacketGetFromAlloc(); - if (unlikely(p == NULL)) - return 0; - ThreadVars tv; - DecodeThreadVars dtv; - - memset(&tv, 0, sizeof(ThreadVars)); - memset(&dtv, 0, sizeof(DecodeThreadVars)); - - FlowInitConfig(FLOW_QUIET); - - DecodeVLAN(&tv, &dtv, p, raw_vlan, sizeof(raw_vlan), NULL); - - - if(p->vlanh == NULL) { - goto error; - } - - if(ENGINE_ISSET_EVENT(p,VLAN_HEADER_TOO_SMALL)) { - goto error; - } - - if(ENGINE_ISSET_EVENT(p,VLAN_UNKNOWN_TYPE)) { - goto error; - } - - PACKET_RECYCLE(p); - FlowShutdown(); - SCFree(p); - return 1; - -error: - PACKET_RECYCLE(p); - FlowShutdown(); - SCFree(p); - return 0; -} -#endif /* UNITTESTS */ - -void DecodeVLANRegisterTests(void) -{ -#ifdef UNITTESTS - UtRegisterTest("DecodeVLANtest01", DecodeVLANtest01, 1); - UtRegisterTest("DecodeVLANtest02", DecodeVLANtest02, 1); - UtRegisterTest("DecodeVLANtest03", DecodeVLANtest03, 1); -#endif /* UNITTESTS */ -} - -/** - * @} - */ |