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340 lines
11 KiB
C
340 lines
11 KiB
C
/* Copyright (c) 2013, The TCPDUMP project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define NETDISSECT_REWORKED
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <tcpdump-stdinc.h>
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#include "interface.h"
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#include "extract.h"
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static const char tstr[] = " [|m3ua]";
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static const char cstr[] = " (corrupt)";
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/* RFC 4666 */
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#define M3UA_REL_1_0 1
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struct m3ua_common_header {
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uint8_t v;
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uint8_t reserved;
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uint8_t msg_class;
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uint8_t msg_type;
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uint32_t len;
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};
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struct m3ua_param_header {
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uint16_t tag;
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uint16_t len;
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};
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/* message classes */
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#define M3UA_MSGC_MGMT 0
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#define M3UA_MSGC_TRANSFER 1
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#define M3UA_MSGC_SSNM 2
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#define M3UA_MSGC_ASPSM 3
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#define M3UA_MSGC_ASPTM 4
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/* reserved values */
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#define M3UA_MSGC_RKM 9
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static const struct tok MessageClasses[] = {
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{ M3UA_MSGC_MGMT, "Management" },
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{ M3UA_MSGC_TRANSFER, "Transfer" },
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{ M3UA_MSGC_SSNM, "SS7" },
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{ M3UA_MSGC_ASPSM, "ASP" },
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{ M3UA_MSGC_ASPTM, "ASP" },
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{ M3UA_MSGC_RKM, "Routing Key Managment" },
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{ 0, NULL }
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};
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/* management messages */
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#define M3UA_MGMT_ERROR 0
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#define M3UA_MGMT_NOTIFY 1
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static const struct tok MgmtMessages[] = {
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{ M3UA_MGMT_ERROR, "Error" },
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{ M3UA_MGMT_NOTIFY, "Notify" },
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{ 0, NULL }
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};
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/* transfer messages */
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#define M3UA_TRANSFER_DATA 1
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static const struct tok TransferMessages[] = {
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{ M3UA_TRANSFER_DATA, "Data" },
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{ 0, NULL }
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};
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/* SS7 Signaling Network Management messages */
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#define M3UA_SSNM_DUNA 1
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#define M3UA_SSNM_DAVA 2
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#define M3UA_SSNM_DAUD 3
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#define M3UA_SSNM_SCON 4
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#define M3UA_SSNM_DUPU 5
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#define M3UA_SSNM_DRST 6
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static const struct tok SS7Messages[] = {
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{ M3UA_SSNM_DUNA, "Destination Unavailable" },
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{ M3UA_SSNM_DAVA, "Destination Available" },
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{ M3UA_SSNM_DAUD, "Destination State Audit" },
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{ M3UA_SSNM_SCON, "Signalling Congestion" },
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{ M3UA_SSNM_DUPU, "Destination User Part Unavailable" },
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{ M3UA_SSNM_DRST, "Destination Restricted" },
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{ 0, NULL }
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};
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/* ASP State Maintenance messages */
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#define M3UA_ASP_UP 1
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#define M3UA_ASP_DN 2
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#define M3UA_ASP_BEAT 3
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#define M3UA_ASP_UP_ACK 4
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#define M3UA_ASP_DN_ACK 5
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#define M3UA_ASP_BEAT_ACK 6
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static const struct tok ASPStateMessages[] = {
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{ M3UA_ASP_UP, "Up" },
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{ M3UA_ASP_DN, "Down" },
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{ M3UA_ASP_BEAT, "Heartbeat" },
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{ M3UA_ASP_UP_ACK, "Up Acknowledgement" },
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{ M3UA_ASP_DN_ACK, "Down Acknowledgement" },
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{ M3UA_ASP_BEAT_ACK, "Heartbeat Acknowledgement" },
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{ 0, NULL }
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};
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/* ASP Traffic Maintenance messages */
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#define M3UA_ASP_AC 1
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#define M3UA_ASP_IA 2
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#define M3UA_ASP_AC_ACK 3
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#define M3UA_ASP_IA_ACK 4
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static const struct tok ASPTrafficMessages[] = {
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{ M3UA_ASP_AC, "Active" },
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{ M3UA_ASP_IA, "Inactive" },
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{ M3UA_ASP_AC_ACK, "Active Acknowledgement" },
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{ M3UA_ASP_IA_ACK, "Inactive Acknowledgement" },
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{ 0, NULL }
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};
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/* Routing Key Management messages */
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#define M3UA_RKM_REQ 1
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#define M3UA_RKM_RSP 2
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#define M3UA_RKM_DEREQ 3
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#define M3UA_RKM_DERSP 4
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static const struct tok RoutingKeyMgmtMessages[] = {
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{ M3UA_RKM_REQ, "Registration Request" },
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{ M3UA_RKM_RSP, "Registration Response" },
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{ M3UA_RKM_DEREQ, "Deregistration Request" },
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{ M3UA_RKM_DERSP, "Deregistration Response" },
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{ 0, NULL }
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};
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/* M3UA Parameters */
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#define M3UA_PARAM_INFO 0x0004
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#define M3UA_PARAM_ROUTING_CTX 0x0006
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#define M3UA_PARAM_DIAGNOSTIC 0x0007
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#define M3UA_PARAM_HB_DATA 0x0009
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#define M3UA_PARAM_TRAFFIC_MODE_TYPE 0x000b
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#define M3UA_PARAM_ERROR_CODE 0x000c
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#define M3UA_PARAM_STATUS 0x000d
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#define M3UA_PARAM_ASP_ID 0x0011
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#define M3UA_PARAM_AFFECTED_POINT_CODE 0x0012
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#define M3UA_PARAM_CORR_ID 0x0013
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#define M3UA_PARAM_NETWORK_APPEARANCE 0x0200
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#define M3UA_PARAM_USER 0x0204
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#define M3UA_PARAM_CONGESTION_INDICATION 0x0205
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#define M3UA_PARAM_CONCERNED_DST 0x0206
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#define M3UA_PARAM_ROUTING_KEY 0x0207
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#define M3UA_PARAM_REG_RESULT 0x0208
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#define M3UA_PARAM_DEREG_RESULT 0x0209
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#define M3UA_PARAM_LOCAL_ROUTING_KEY_ID 0x020a
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#define M3UA_PARAM_DST_POINT_CODE 0x020b
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#define M3UA_PARAM_SI 0x020c
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#define M3UA_PARAM_ORIGIN_POINT_CODE_LIST 0x020e
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#define M3UA_PARAM_PROTO_DATA 0x0210
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#define M3UA_PARAM_REG_STATUS 0x0212
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#define M3UA_PARAM_DEREG_STATUS 0x0213
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static const struct tok ParamName[] = {
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{ M3UA_PARAM_INFO, "INFO String" },
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{ M3UA_PARAM_ROUTING_CTX, "Routing Context" },
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{ M3UA_PARAM_DIAGNOSTIC, "Diagnostic Info" },
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{ M3UA_PARAM_HB_DATA, "Heartbeat Data" },
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{ M3UA_PARAM_TRAFFIC_MODE_TYPE, "Traffic Mode Type" },
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{ M3UA_PARAM_ERROR_CODE, "Error Code" },
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{ M3UA_PARAM_STATUS, "Status" },
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{ M3UA_PARAM_ASP_ID, "ASP Identifier" },
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{ M3UA_PARAM_AFFECTED_POINT_CODE, "Affected Point Code" },
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{ M3UA_PARAM_CORR_ID, "Correlation ID" },
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{ M3UA_PARAM_NETWORK_APPEARANCE, "Network Appearance" },
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{ M3UA_PARAM_USER, "User/Cause" },
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{ M3UA_PARAM_CONGESTION_INDICATION, "Congestion Indications" },
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{ M3UA_PARAM_CONCERNED_DST, "Concerned Destination" },
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{ M3UA_PARAM_ROUTING_KEY, "Routing Key" },
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{ M3UA_PARAM_REG_RESULT, "Registration Result" },
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{ M3UA_PARAM_DEREG_RESULT, "Deregistration Result" },
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{ M3UA_PARAM_LOCAL_ROUTING_KEY_ID, "Local Routing Key Identifier" },
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{ M3UA_PARAM_DST_POINT_CODE, "Destination Point Code" },
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{ M3UA_PARAM_SI, "Service Indicators" },
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{ M3UA_PARAM_ORIGIN_POINT_CODE_LIST, "Originating Point Code List" },
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{ M3UA_PARAM_PROTO_DATA, "Protocol Data" },
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{ M3UA_PARAM_REG_STATUS, "Registration Status" },
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{ M3UA_PARAM_DEREG_STATUS, "Deregistration Status" },
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{ 0, NULL }
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};
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static void
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tag_value_print(netdissect_options *ndo,
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const u_char *buf, const uint16_t tag, const uint16_t size)
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{
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switch (tag) {
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case M3UA_PARAM_NETWORK_APPEARANCE:
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case M3UA_PARAM_ROUTING_CTX:
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case M3UA_PARAM_CORR_ID:
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/* buf and size don't include the header */
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if (size < 4)
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goto corrupt;
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ND_TCHECK2(*buf, size);
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ND_PRINT((ndo, "0x%08x", EXTRACT_32BITS(buf)));
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break;
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/* ... */
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default:
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ND_PRINT((ndo, "(length %u)", size + (u_int)sizeof(struct m3ua_param_header)));
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ND_TCHECK2(*buf, size);
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}
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return;
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corrupt:
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ND_PRINT((ndo, "%s", cstr));
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ND_TCHECK2(*buf, size);
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return;
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trunc:
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ND_PRINT((ndo, "%s", tstr));
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}
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Parameter Tag | Parameter Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* \ \
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* / Parameter Value /
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* \ \
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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static void
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m3ua_tags_print(netdissect_options *ndo,
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const u_char *buf, const u_int size)
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{
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const u_char *p = buf;
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int align;
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uint16_t hdr_tag;
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uint16_t hdr_len;
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while (p < buf + size) {
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if (p + sizeof(struct m3ua_param_header) > buf + size)
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goto corrupt;
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ND_TCHECK2(*p, sizeof(struct m3ua_param_header));
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/* Parameter Tag */
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hdr_tag = EXTRACT_16BITS(p);
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ND_PRINT((ndo, "\n\t\t\t%s: ", tok2str(ParamName, "Unknown Parameter (0x%04x)", hdr_tag)));
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/* Parameter Length */
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hdr_len = EXTRACT_16BITS(p + 2);
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if (hdr_len < sizeof(struct m3ua_param_header))
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goto corrupt;
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/* Parameter Value */
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align = (p + hdr_len - buf) % 4;
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align = align ? 4 - align : 0;
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ND_TCHECK2(*p, hdr_len + align);
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tag_value_print(ndo, p, hdr_tag, hdr_len - sizeof(struct m3ua_param_header));
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p += hdr_len + align;
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}
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return;
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corrupt:
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ND_PRINT((ndo, "%s", cstr));
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ND_TCHECK2(*buf, size);
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return;
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trunc:
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ND_PRINT((ndo, "%s", tstr));
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}
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/*
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Version | Reserved | Message Class | Message Type |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Message Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* \ \
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* / /
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*/
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void
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m3ua_print(netdissect_options *ndo,
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const u_char *buf, const u_int size)
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{
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const struct m3ua_common_header *hdr = (const struct m3ua_common_header *) buf;
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const struct tok *dict;
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/* size includes the header */
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if (size < sizeof(struct m3ua_common_header))
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goto corrupt;
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ND_TCHECK(*hdr);
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if (hdr->v != M3UA_REL_1_0)
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return;
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dict =
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hdr->msg_class == M3UA_MSGC_MGMT ? MgmtMessages :
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hdr->msg_class == M3UA_MSGC_TRANSFER ? TransferMessages :
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hdr->msg_class == M3UA_MSGC_SSNM ? SS7Messages :
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hdr->msg_class == M3UA_MSGC_ASPSM ? ASPStateMessages :
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hdr->msg_class == M3UA_MSGC_ASPTM ? ASPTrafficMessages :
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hdr->msg_class == M3UA_MSGC_RKM ? RoutingKeyMgmtMessages :
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NULL;
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ND_PRINT((ndo, "\n\t\t%s", tok2str(MessageClasses, "Unknown message class %i", hdr->msg_class)));
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if (dict != NULL)
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ND_PRINT((ndo, " %s Message", tok2str(dict, "Unknown (0x%02x)", hdr->msg_type)));
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if (size != EXTRACT_32BITS(&hdr->len))
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ND_PRINT((ndo, "\n\t\t\t@@@@@@ Corrupted length %u of message @@@@@@", EXTRACT_32BITS(&hdr->len)));
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else
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m3ua_tags_print(ndo, buf + sizeof(struct m3ua_common_header), EXTRACT_32BITS(&hdr->len) - sizeof(struct m3ua_common_header));
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return;
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corrupt:
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ND_PRINT((ndo, "%s", cstr));
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ND_TCHECK2(*buf, size);
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return;
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trunc:
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ND_PRINT((ndo, "%s", tstr));
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}
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