| /* Copyright (c) 2013, The TCPDUMP project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR |
| * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /* \summary: Message Transfer Part 3 (MTP3) User Adaptation Layer (M3UA) printer */ |
| |
| /* RFC 4666 */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include "netdissect-stdinc.h" |
| |
| #include "netdissect.h" |
| #include "extract.h" |
| |
| |
| #define M3UA_REL_1_0 1 |
| |
| struct m3ua_common_header { |
| nd_uint8_t v; |
| nd_uint8_t reserved; |
| nd_uint8_t msg_class; |
| nd_uint8_t msg_type; |
| nd_uint32_t len; |
| }; |
| |
| struct m3ua_param_header { |
| nd_uint16_t tag; |
| nd_uint16_t len; |
| }; |
| |
| /* message classes */ |
| #define M3UA_MSGC_MGMT 0 |
| #define M3UA_MSGC_TRANSFER 1 |
| #define M3UA_MSGC_SSNM 2 |
| #define M3UA_MSGC_ASPSM 3 |
| #define M3UA_MSGC_ASPTM 4 |
| /* reserved values */ |
| #define M3UA_MSGC_RKM 9 |
| |
| static const struct tok MessageClasses[] = { |
| { M3UA_MSGC_MGMT, "Management" }, |
| { M3UA_MSGC_TRANSFER, "Transfer" }, |
| { M3UA_MSGC_SSNM, "SS7" }, |
| { M3UA_MSGC_ASPSM, "ASP" }, |
| { M3UA_MSGC_ASPTM, "ASP" }, |
| { M3UA_MSGC_RKM, "Routing Key Management"}, |
| { 0, NULL } |
| }; |
| |
| /* management messages */ |
| #define M3UA_MGMT_ERROR 0 |
| #define M3UA_MGMT_NOTIFY 1 |
| |
| static const struct tok MgmtMessages[] = { |
| { M3UA_MGMT_ERROR, "Error" }, |
| { M3UA_MGMT_NOTIFY, "Notify" }, |
| { 0, NULL } |
| }; |
| |
| /* transfer messages */ |
| #define M3UA_TRANSFER_DATA 1 |
| |
| static const struct tok TransferMessages[] = { |
| { M3UA_TRANSFER_DATA, "Data" }, |
| { 0, NULL } |
| }; |
| |
| /* SS7 Signaling Network Management messages */ |
| #define M3UA_SSNM_DUNA 1 |
| #define M3UA_SSNM_DAVA 2 |
| #define M3UA_SSNM_DAUD 3 |
| #define M3UA_SSNM_SCON 4 |
| #define M3UA_SSNM_DUPU 5 |
| #define M3UA_SSNM_DRST 6 |
| |
| static const struct tok SS7Messages[] = { |
| { M3UA_SSNM_DUNA, "Destination Unavailable" }, |
| { M3UA_SSNM_DAVA, "Destination Available" }, |
| { M3UA_SSNM_DAUD, "Destination State Audit" }, |
| { M3UA_SSNM_SCON, "Signalling Congestion" }, |
| { M3UA_SSNM_DUPU, "Destination User Part Unavailable" }, |
| { M3UA_SSNM_DRST, "Destination Restricted" }, |
| { 0, NULL } |
| }; |
| |
| /* ASP State Maintenance messages */ |
| #define M3UA_ASP_UP 1 |
| #define M3UA_ASP_DN 2 |
| #define M3UA_ASP_BEAT 3 |
| #define M3UA_ASP_UP_ACK 4 |
| #define M3UA_ASP_DN_ACK 5 |
| #define M3UA_ASP_BEAT_ACK 6 |
| |
| static const struct tok ASPStateMessages[] = { |
| { M3UA_ASP_UP, "Up" }, |
| { M3UA_ASP_DN, "Down" }, |
| { M3UA_ASP_BEAT, "Heartbeat" }, |
| { M3UA_ASP_UP_ACK, "Up Acknowledgement" }, |
| { M3UA_ASP_DN_ACK, "Down Acknowledgement" }, |
| { M3UA_ASP_BEAT_ACK, "Heartbeat Acknowledgement" }, |
| { 0, NULL } |
| }; |
| |
| /* ASP Traffic Maintenance messages */ |
| #define M3UA_ASP_AC 1 |
| #define M3UA_ASP_IA 2 |
| #define M3UA_ASP_AC_ACK 3 |
| #define M3UA_ASP_IA_ACK 4 |
| |
| static const struct tok ASPTrafficMessages[] = { |
| { M3UA_ASP_AC, "Active" }, |
| { M3UA_ASP_IA, "Inactive" }, |
| { M3UA_ASP_AC_ACK, "Active Acknowledgement" }, |
| { M3UA_ASP_IA_ACK, "Inactive Acknowledgement" }, |
| { 0, NULL } |
| }; |
| |
| /* Routing Key Management messages */ |
| #define M3UA_RKM_REQ 1 |
| #define M3UA_RKM_RSP 2 |
| #define M3UA_RKM_DEREQ 3 |
| #define M3UA_RKM_DERSP 4 |
| |
| static const struct tok RoutingKeyMgmtMessages[] = { |
| { M3UA_RKM_REQ, "Registration Request" }, |
| { M3UA_RKM_RSP, "Registration Response" }, |
| { M3UA_RKM_DEREQ, "Deregistration Request" }, |
| { M3UA_RKM_DERSP, "Deregistration Response" }, |
| { 0, NULL } |
| }; |
| |
| /* M3UA Parameters */ |
| #define M3UA_PARAM_INFO 0x0004 |
| #define M3UA_PARAM_ROUTING_CTX 0x0006 |
| #define M3UA_PARAM_DIAGNOSTIC 0x0007 |
| #define M3UA_PARAM_HB_DATA 0x0009 |
| #define M3UA_PARAM_TRAFFIC_MODE_TYPE 0x000b |
| #define M3UA_PARAM_ERROR_CODE 0x000c |
| #define M3UA_PARAM_STATUS 0x000d |
| #define M3UA_PARAM_ASP_ID 0x0011 |
| #define M3UA_PARAM_AFFECTED_POINT_CODE 0x0012 |
| #define M3UA_PARAM_CORR_ID 0x0013 |
| |
| #define M3UA_PARAM_NETWORK_APPEARANCE 0x0200 |
| #define M3UA_PARAM_USER 0x0204 |
| #define M3UA_PARAM_CONGESTION_INDICATION 0x0205 |
| #define M3UA_PARAM_CONCERNED_DST 0x0206 |
| #define M3UA_PARAM_ROUTING_KEY 0x0207 |
| #define M3UA_PARAM_REG_RESULT 0x0208 |
| #define M3UA_PARAM_DEREG_RESULT 0x0209 |
| #define M3UA_PARAM_LOCAL_ROUTING_KEY_ID 0x020a |
| #define M3UA_PARAM_DST_POINT_CODE 0x020b |
| #define M3UA_PARAM_SI 0x020c |
| #define M3UA_PARAM_ORIGIN_POINT_CODE_LIST 0x020e |
| #define M3UA_PARAM_PROTO_DATA 0x0210 |
| #define M3UA_PARAM_REG_STATUS 0x0212 |
| #define M3UA_PARAM_DEREG_STATUS 0x0213 |
| |
| static const struct tok ParamName[] = { |
| { M3UA_PARAM_INFO, "INFO String" }, |
| { M3UA_PARAM_ROUTING_CTX, "Routing Context" }, |
| { M3UA_PARAM_DIAGNOSTIC, "Diagnostic Info" }, |
| { M3UA_PARAM_HB_DATA, "Heartbeat Data" }, |
| { M3UA_PARAM_TRAFFIC_MODE_TYPE, "Traffic Mode Type" }, |
| { M3UA_PARAM_ERROR_CODE, "Error Code" }, |
| { M3UA_PARAM_STATUS, "Status" }, |
| { M3UA_PARAM_ASP_ID, "ASP Identifier" }, |
| { M3UA_PARAM_AFFECTED_POINT_CODE, "Affected Point Code" }, |
| { M3UA_PARAM_CORR_ID, "Correlation ID" }, |
| { M3UA_PARAM_NETWORK_APPEARANCE, "Network Appearance" }, |
| { M3UA_PARAM_USER, "User/Cause" }, |
| { M3UA_PARAM_CONGESTION_INDICATION, "Congestion Indications" }, |
| { M3UA_PARAM_CONCERNED_DST, "Concerned Destination" }, |
| { M3UA_PARAM_ROUTING_KEY, "Routing Key" }, |
| { M3UA_PARAM_REG_RESULT, "Registration Result" }, |
| { M3UA_PARAM_DEREG_RESULT, "Deregistration Result" }, |
| { M3UA_PARAM_LOCAL_ROUTING_KEY_ID, "Local Routing Key Identifier" }, |
| { M3UA_PARAM_DST_POINT_CODE, "Destination Point Code" }, |
| { M3UA_PARAM_SI, "Service Indicators" }, |
| { M3UA_PARAM_ORIGIN_POINT_CODE_LIST, "Originating Point Code List" }, |
| { M3UA_PARAM_PROTO_DATA, "Protocol Data" }, |
| { M3UA_PARAM_REG_STATUS, "Registration Status" }, |
| { M3UA_PARAM_DEREG_STATUS, "Deregistration Status" }, |
| { 0, NULL } |
| }; |
| |
| static void |
| tag_value_print(netdissect_options *ndo, |
| const u_char *buf, const uint16_t tag, const uint16_t size) |
| { |
| switch (tag) { |
| case M3UA_PARAM_NETWORK_APPEARANCE: |
| case M3UA_PARAM_ROUTING_CTX: |
| case M3UA_PARAM_CORR_ID: |
| /* buf and size don't include the header */ |
| if (size < 4) |
| goto invalid; |
| ND_TCHECK_LEN(buf, size); |
| ND_PRINT("0x%08x", EXTRACT_BE_U_4(buf)); |
| break; |
| /* ... */ |
| default: |
| ND_PRINT("(length %u)", size + (u_int)sizeof(struct m3ua_param_header)); |
| ND_TCHECK_LEN(buf, size); |
| } |
| return; |
| |
| invalid: |
| ND_PRINT("%s", istr); |
| ND_TCHECK_LEN(buf, size); |
| return; |
| trunc: |
| nd_print_trunc(ndo); |
| } |
| |
| /* |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Parameter Tag | Parameter Length | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * \ \ |
| * / Parameter Value / |
| * \ \ |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| static void |
| m3ua_tags_print(netdissect_options *ndo, |
| const u_char *buf, const u_int size) |
| { |
| const u_char *p = buf; |
| int align; |
| uint16_t hdr_tag; |
| uint16_t hdr_len; |
| |
| while (p < buf + size) { |
| if (p + sizeof(struct m3ua_param_header) > buf + size) |
| goto invalid; |
| ND_TCHECK_LEN(p, sizeof(struct m3ua_param_header)); |
| /* Parameter Tag */ |
| hdr_tag = EXTRACT_BE_U_2(p); |
| ND_PRINT("\n\t\t\t%s: ", tok2str(ParamName, "Unknown Parameter (0x%04x)", hdr_tag)); |
| /* Parameter Length */ |
| hdr_len = EXTRACT_BE_U_2(p + 2); |
| if (hdr_len < sizeof(struct m3ua_param_header)) |
| goto invalid; |
| /* Parameter Value */ |
| align = (p + hdr_len - buf) % 4; |
| align = align ? 4 - align : 0; |
| ND_TCHECK_LEN(p, hdr_len + align); |
| tag_value_print(ndo, p, hdr_tag, hdr_len - sizeof(struct m3ua_param_header)); |
| p += hdr_len + align; |
| } |
| return; |
| |
| invalid: |
| ND_PRINT("%s", istr); |
| ND_TCHECK_LEN(buf, size); |
| return; |
| trunc: |
| nd_print_trunc(ndo); |
| } |
| |
| /* |
| * 0 1 2 3 |
| * 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 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Version | Reserved | Message Class | Message Type | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Message Length | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * \ \ |
| * / / |
| */ |
| void |
| m3ua_print(netdissect_options *ndo, |
| const u_char *buf, const u_int size) |
| { |
| const struct m3ua_common_header *hdr = (const struct m3ua_common_header *) buf; |
| const struct tok *dict; |
| uint8_t msg_class; |
| |
| ndo->ndo_protocol = "m3ua"; |
| /* size includes the header */ |
| if (size < sizeof(struct m3ua_common_header)) |
| goto invalid; |
| ND_TCHECK_SIZE(hdr); |
| if (EXTRACT_U_1(hdr->v) != M3UA_REL_1_0) |
| return; |
| |
| msg_class = EXTRACT_U_1(hdr->msg_class); |
| dict = |
| msg_class == M3UA_MSGC_MGMT ? MgmtMessages : |
| msg_class == M3UA_MSGC_TRANSFER ? TransferMessages : |
| msg_class == M3UA_MSGC_SSNM ? SS7Messages : |
| msg_class == M3UA_MSGC_ASPSM ? ASPStateMessages : |
| msg_class == M3UA_MSGC_ASPTM ? ASPTrafficMessages : |
| msg_class == M3UA_MSGC_RKM ? RoutingKeyMgmtMessages : |
| NULL; |
| |
| ND_PRINT("\n\t\t%s", tok2str(MessageClasses, "Unknown message class %i", msg_class)); |
| if (dict != NULL) |
| ND_PRINT(" %s Message", tok2str(dict, "Unknown (0x%02x)", EXTRACT_U_1(hdr->msg_type))); |
| |
| if (size != EXTRACT_BE_U_4(hdr->len)) |
| ND_PRINT("\n\t\t\t@@@@@@ Corrupted length %u of message @@@@@@", EXTRACT_BE_U_4(hdr->len)); |
| else |
| m3ua_tags_print(ndo, buf + sizeof(struct m3ua_common_header), |
| EXTRACT_BE_U_4(hdr->len) - sizeof(struct m3ua_common_header)); |
| return; |
| |
| invalid: |
| ND_PRINT("%s", istr); |
| ND_TCHECK_LEN(buf, size); |
| return; |
| trunc: |
| nd_print_trunc(ndo); |
| } |
| |