9ce5cd3548
MLUM isn't defined (which it isn't, by default). svn path=/trunk/; revision=9397
1540 lines
40 KiB
C
1540 lines
40 KiB
C
/* packet-gsm_map.c
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* Routines for GSM Mobile Application Part dissection
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*
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* Copyright 2000, Felix Fei <felix.fei [AT] utstar.com>
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*
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* Michael Lum <mlum [AT] telostech.com>,
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* Changed to run on new version of TCAP, many changes for
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* EOC matching, and parameter separation. (2003)
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*
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* $Id: packet-gsm_map.c,v 1.4 2003/12/21 21:41:10 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* Copied from packet-tcap.c (where "WHATEVER_FILE_YOU_USED"
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* is a dissector file; if you just copied this from README.developer,
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* don't bother with the "Copied from" - you don't even need to put
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* in a "Copied from" if you copied an existing dissector, especially
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* if the bulk of the code in the new dissector is your code)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "epan/packet.h"
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#include "asn1.h"
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/* OPERATION CODE DEFINITION */
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/* LOCATION MANAGEMENT */
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#define MAP_UPD_LOC 2 /* Update Location */
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#define MAP_CANCEL_LOC 3 /* Cancel Location */
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#define MAP_PURGE 67 /* Purge MS */
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#define MAP_SEND_ID 5 /* Send Identification */
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#define MAP_GPRS_UPD_LOC 23 /* GPRS Update Location */
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#define MAP_DET_IMSI 5 /* Detach IMSI */
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#define MAP_NOTE_MM_EVT 89 /* Note MM Event */
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/* HANDOVER MANAGEMENT */
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#define MAP_PREP_HO 68 /* Prepare Handover */
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#define MAP_PREP_SUBS_HO 69 /* Prepare Subsequent Handover */
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#define MAP_PERF_HO 28 /* Perform Handover */
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#define MAP_PERF_SUBS_HO 30 /* Perform Subsequent Handover */
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#define MAP_SEND_END_SIG 29 /* Send End Signal */
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#define MAP_PROC_ACC_SIG 33 /* Process Access Signalling */
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#define MAP_FWD_ACC_SIG 34 /* Forward Access Signalling */
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/* AUTHENTICATION MANAGEMENT */
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#define MAP_AUTH_INFO 56 /* Send Authintication Info */
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#define MAP_AUTH_FAIL_RPT 15 /* Authentication Failure Report */
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/* IDENTIFICATION MANAGEMENT */
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#define MAP_CHK_IMEI 43 /* Check IMEI */
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/* FAULT & RECOVERY MANAGEMENT */
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#define MAP_RESET 37 /* Reset */
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#define MAP_RESTORE_DATA 57 /* Restore Data */
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#define MAP_FWD_CHK_SS_IND 38 /* Forward Check SS Indication */
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/* OAM MANAGEMENT */
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#define MAP_ACT_TRACE 50 /* Activate Trace */
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#define MAP_DEACT_TRACE 51 /* Deactivate Trace Mode */
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#define MAP_SEND_IMSI 58 /* Send IMSI */
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#define MAP_TRACE_SUBS_ACTV 52 /* Trace Subscriber Activity */
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#define MAP_NOTE_INTER_HO 35 /* Not Internal Handover */
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/* CALL MANAGEMENT */
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#define MAP_ROUTE_INFO 22 /* Send Routing Info */
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#define MAP_PROV_ROAM_NUM 4 /* Provide Roaming Number */
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#define MAP_PROV_SIWFS_NUM 31 /* Provide SIWFS Number */
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#define MAP_SIWFS_SIG_MOD 32 /* SIWFS Signalling Modify */
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#define MAP_RES_CALL_HAND 6 /* Resume Call Handling */
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#define MAP_SET_RPT_STATE 73 /* Set Reporting State */
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#define MAP_STAT_RPT 74 /* Status Report */
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#define MAP_REM_USR_FREE 75 /* Remote user free */
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#define MAP_PREP_GRP_CALL 39 /* Prepare Group Call */
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#define MAP_SND_GRP_CALL_END_SIG 40 /* Send Group Call End Signalling */
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#define MAP_PRO_GRP_CALL_SIG 41 /* Process Group Call Signalling */
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#define MAP_FWD_GRP_CALL_SIG 42 /* Forward Group Call Signalling */
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#define MAP_IST_ALERT 87 /* IST Alert */
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#define MAP_IST_COMMAND 88 /* IST Command */
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/* SS MANAGEMENT */
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#define MAP_REG_SS 10 /* Register SS */
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#define MAP_ERASE_SS 11 /* Erase SS */
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#define MAP_ACT_SS 12 /* Activate SS */
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#define MAP_DEACT_SS 13 /* Deactivate SS */
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#define MAP_INTER_SS 14 /* Interogate SS */
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#define MAP_PROC_U_SS_REQ 59 /* Process Unstructured SS Req */
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#define MAP_U_SS_REQ 60 /* Unstructured SS Request */
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#define MAP_U_SS_NOTIFY 61 /* Unstructured SS Notify */
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#define MAP_REG_PASSWD 17 /* Register Password */
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#define MAP_GET_PASSWD 18 /* Get Password */
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#define MAP_REG_CC_ENT 76 /* Register CC Entry */
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#define MAP_ERASE_CC_ENT 77 /* Erase CC Entry */
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#define MAP_BEGIN_SUBS_ACTV 54 /* Begin Subscriber Activity */
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#define MAP_PROC_U_SS_DATA 19 /* Process Unstructured SS Data */
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#define MAP_SS_INV_NOTIFY 72 /* SS Invocation Notify */
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/* SMS MANAGEMENT */
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#define MAP_MO_FWD_SM 46 /* Forward Short Message */
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#define MAP_MT_FWD_SM 44 /* MT-Fwd SM */
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#define MAP_ROUTE_INFO_SM 45 /* Routing Info for SM */
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#define MAP_SM_DEL_STAT 47 /* Report SM Delivery Status */
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#define MAP_INFORM_SC 63 /* Inform Service Center */
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#define MAP_ALERT_SC 64 /* Alert Service Center */
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#define MAP_SM_READY 66 /* SM Ready */
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#define MAP_NOTE_SUB_PRES 48 /* Note Subscriber Present */
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#define MAP_ALERT_SC_W_RES 49 /* Alert SC Without Result */
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/* SUBSCRIBER MANAGEMENT */
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#define MAP_INS_SUB_DATA 7 /* Insert Subscriber Data */
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#define MAP_DEL_SUB_DATA 8 /* Delete Subscriber Data */
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#define MAP_PROV_SUB_INFO 70 /* Provide Subscriber Info */
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#define MAP_ANY_TIME_INTER 71 /* Any Time Interrogation */
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#define MAP_SEND_PARAM 9 /* Send Parameters */
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#define MAP_ANY_TIME_SUB_DATA_INTER 62 /* Any Time Subscriber Info Interrogation */
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#define MAP_ANY_TIME_MOD 65 /* Any Time Modification */
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#define MAP_NOTE_SUB_DATA_MOD 5 /* Note Subscriber Data Modified */
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/* PDP ACTIVE MANAGEMENT */
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#define MAP_GPRS_ROUTE_INFO 24 /* Rout Info for GPRS */
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#define MAP_FAIL_REP 25 /* Failure Report */
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#define MAP_GPRS_NOTE_MS_PRES 26 /* GPRS NoteMs Present */
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/* LOCATION SERVICE */
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#define MAP_PROV_SUB_LOC 83 /* Provide Subscriber Location */
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#define MAP_SEND_ROUTE_INFO_FOR_LCS 85 /* Send Routing Info For LCS */
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#define MAP_SUB_LOC_REP 86 /* Subscriber Location Report */
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#define MAP_OPR_CODE_TAG 0x02
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#define MAP_INVOKE_ID_TAG 0x02
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#define MAP_LINK_ID_TAG 0x80
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#define MAP_SEQ_TAG 0x30
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#define MAP_GE_PROBLEM_TAG 0x80
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#define MAP_IN_PROBLEM_TAG 0x81
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#define MAP_RR_PROBLEM_TAG 0x82
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#define MAP_RE_PROBLEM_TAG 0x83
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#define MAP_INVALID_TAG 0x00
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#define MAP_OK 0x0
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#define MAP_FAIL 0x1
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static const value_string opr_code_strings[] = {
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/* LOCATION MANAGEMENT */
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{ MAP_UPD_LOC, "Update Location"},
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{ MAP_CANCEL_LOC, "Cancel Location"},
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{ MAP_PURGE, "Purge MS"},
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{ MAP_SEND_ID, "Send Identification"},
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{ MAP_GPRS_UPD_LOC, "Update GPRS Location"},
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{ MAP_DET_IMSI, "Detach IMSI"},
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{ MAP_NOTE_MM_EVT, "Note MM Event"},
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/* HANDOVER MANAGEMENT */
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{ MAP_PREP_HO, "Prepare Handover"},
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{ MAP_PREP_SUBS_HO, "Prepare Subsequent Handover"},
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{ MAP_PERF_HO, "Perform Handover"},
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{ MAP_PERF_SUBS_HO, "Perform Subsequent Handover"},
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{ MAP_SEND_END_SIG, "Send End Signal"},
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{ MAP_PROC_ACC_SIG, "Process Access Signalling"},
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{ MAP_FWD_ACC_SIG, "Forward Access Signalling"},
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/* AUTHENTICATION MANAGEMENT */
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{ MAP_AUTH_INFO, "Send Authentication Info"},
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{ MAP_AUTH_FAIL_RPT, "Authentication Failure Report"},
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/* IDENTIFICATION MANAGEMENT */
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{ MAP_CHK_IMEI, "Check IMEI"},
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/* FAULT & RECOVERY MANAGEMENT */
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{ MAP_RESET, "Reset"},
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{ MAP_RESTORE_DATA, "Restore Data"},
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{ MAP_FWD_CHK_SS_IND, "Forward Check SS Indication"},
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/* OAM MANAGEMENT */
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{ MAP_ACT_TRACE, "Activate Trace Mode"},
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{ MAP_DEACT_TRACE, "Deactivate Trace Mode"},
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{ MAP_SEND_IMSI, "Send IMSI"},
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{ MAP_TRACE_SUBS_ACTV, "Trace Subscriber Activity"},
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{ MAP_NOTE_INTER_HO, "Note Internal Handover"},
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/* CALL MANAGEMENT */
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{ MAP_ROUTE_INFO, "Send Routing Info"},
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{ MAP_PROV_ROAM_NUM, "Provide Roaming Number"},
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{ MAP_PROV_SIWFS_NUM, "Provide SIWFS Number"},
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{ MAP_SIWFS_SIG_MOD, "SIWFS Signalling Modify"},
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{ MAP_RES_CALL_HAND, "Resume Call Handling"},
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{ MAP_SET_RPT_STATE, "Set Reporting State"},
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{ MAP_STAT_RPT, "Status Report"},
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{ MAP_REM_USR_FREE, "Remote User Free"},
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{ MAP_PREP_GRP_CALL, "Prepare Group Call"},
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{ MAP_SND_GRP_CALL_END_SIG, "Send Group Call End Signalling"},
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{ MAP_PRO_GRP_CALL_SIG, "Process Group Call Signalling"},
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{ MAP_FWD_GRP_CALL_SIG, "Forward Group Call Signalling"},
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{ MAP_IST_ALERT, "IST Alert"},
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{ MAP_IST_COMMAND, "IST Command"},
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/* SS MANAGEMENT */
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{ MAP_REG_SS, "Register SS"},
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{ MAP_ERASE_SS, "Erase SS"},
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{ MAP_ACT_SS, "Activate SS"},
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{ MAP_DEACT_SS, "Deactivate SS"},
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{ MAP_INTER_SS, "Interogate SS"},
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{ MAP_PROC_U_SS_REQ, "Process Unstructured SS Request"},
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{ MAP_U_SS_REQ, "Unstructured SS Request"},
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{ MAP_U_SS_NOTIFY, "Unstructured SS Notify"},
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{ MAP_REG_PASSWD, "Register Password"},
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{ MAP_GET_PASSWD, "Get Password"},
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{ MAP_REG_CC_ENT, "Register CC Entry"},
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{ MAP_ERASE_CC_ENT, "Erase CC Entry"},
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{ MAP_BEGIN_SUBS_ACTV, "Begin Subscriber Activity"},
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{ MAP_PROC_U_SS_DATA, "Process Unstructured SS Data"},
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{ MAP_SS_INV_NOTIFY, "SS Invocation Notification"},
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/* SMS MANAGEMENT */
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{ MAP_MO_FWD_SM, "MO Forward SM"},
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{ MAP_MT_FWD_SM, "MT Forward SM"},
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{ MAP_ROUTE_INFO_SM, "Send Routing Info For SM"},
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{ MAP_SM_DEL_STAT, "Report SM Delivery Status"},
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{ MAP_INFORM_SC, "Inform Service Center"},
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{ MAP_ALERT_SC, "Alert Service Center"},
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{ MAP_SM_READY, "Ready For SM"},
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{ MAP_NOTE_SUB_PRES, "Note Subscriber Present"},
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{ MAP_ALERT_SC_W_RES, "Alert SC Without Result"},
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/* SUBSCRIBER MANAGEMENT */
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{ MAP_INS_SUB_DATA, "Insert Subscriber Data"},
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{ MAP_DEL_SUB_DATA, "Delete Subscriber Data"},
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{ MAP_PROV_SUB_INFO, "Provide Subscriber Info"},
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{ MAP_ANY_TIME_INTER, "Any Time Interrogation"},
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{ MAP_SEND_PARAM, "Send Parameters"},
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{ MAP_ANY_TIME_SUB_DATA_INTER, "Any Time Subscription Interrogation"},
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{ MAP_ANY_TIME_MOD, "Any Time Modification"},
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{ MAP_NOTE_SUB_DATA_MOD, "Note Subscriber Data Modified"},
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/* PDP ACTIVE MANAGEMENT */
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{ MAP_GPRS_ROUTE_INFO, "Send Routing Info For GPRS"},
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{ MAP_FAIL_REP, "Failure Report"},
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{ MAP_GPRS_NOTE_MS_PRES, "Note MS Present For GPRS"},
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/* LOCATION SERVICE */
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{ MAP_PROV_SUB_LOC, "Provide Subscriber Location"},
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{ MAP_SEND_ROUTE_INFO_FOR_LCS, "Send Routing Info For LCS"},
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{ MAP_SUB_LOC_REP, "Subscriber Location Report"},
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{ 0, NULL},
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};
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/* TCAP component type */
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#define MAP_TC_INVOKE 0xa1
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#define MAP_TC_RRL 0xa2
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#define MAP_TC_RE 0xa3
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#define MAP_TC_REJECT 0xa4
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#define MAP_TC_RRN 0xa7
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static const value_string tag_strings[] = {
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{ MAP_TC_INVOKE, "Invoke" },
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{ MAP_TC_RRL, "RetRes(Last)" },
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{ MAP_TC_RE, "RetErr" },
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{ MAP_TC_REJECT, "Reject" },
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{ MAP_TC_RRN, "RetRes(Not Last)" },
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{ 0, NULL},
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};
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/* Initialize the protocol and registered fields */
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static int proto_map = -1;
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static int hf_map_tag = -1;
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static int hf_map_length = -1;
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static int hf_map_opr_code = -1;
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static int hf_map_int = -1;
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/* Initialize the subtree pointers */
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static gint ett_map = -1;
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static gint ett_component = -1;
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static gint ett_components = -1;
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static gint ett_param = -1;
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static gint ett_params = -1;
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static gint ett_problem = -1;
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static gint ett_opr_code = -1;
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static const value_string param_1_strings[] = {
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{ 0x04, "IMSI" },
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{ 0x81, "msc-Number" },
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{ 0, NULL },
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};
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typedef struct dgt_set_t
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{
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unsigned char out[15];
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}
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dgt_set_t;
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static dgt_set_t Dgt_tbcd = {
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{
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/* 0 1 2 3 4 5 6 7 8 9 a b c d e */
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'0','1','2','3','4','5','6','7','8','9','?','B','C','*','#'
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}
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};
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static dgt_set_t Dgt_msid = {
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{
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/* 0 1 2 3 4 5 6 7 8 9 a b c d e */
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'0','1','2','3','4','5','6','7','8','9','?','?','?','?','?'
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}
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};
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/* FUNCTIONS */
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/*
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* Unpack BCD input pattern into output ASCII pattern
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*
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* Input Pattern is supplied using the same format as the digits
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*
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* Returns: length of unpacked pattern
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*/
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static int
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my_dgt_tbcd_unpack(
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char *out, /* ASCII pattern out */
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guchar *in, /* packed pattern in */
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int num_octs, /* Number of octets to unpack */
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dgt_set_t *dgt /* Digit definitions */
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)
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{
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int cnt = 0;
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unsigned char i;
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while (num_octs)
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{
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/*
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* unpack first value in byte
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*/
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i = *in++;
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*out++ = dgt->out[i & 0x0f];
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cnt++;
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/*
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* unpack second value in byte
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*/
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i >>= 4;
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if (i == 0x0f) /* odd number bytes - hit filler */
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break;
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*out++ = dgt->out[i];
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cnt++;
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num_octs--;
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}
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*out = '\0';
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return(cnt);
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}
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static gchar *
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my_match_strval(guint32 val, const value_string *vs, gint *idx)
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{
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gint i = 0;
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while (vs[i].strptr) {
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if (vs[i].value == val)
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{
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*idx = i;
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return(vs[i].strptr);
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}
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i++;
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}
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*idx = -1;
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return(NULL);
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}
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static gboolean
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check_map_tag(ASN1_SCK *asn1, guint tag)
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{
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guint saved_offset, real_tag;
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if (tvb_length_remaining(asn1->tvb, asn1->offset) <= 0)
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{
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return(FALSE);
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}
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saved_offset = asn1->offset;
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asn1_id_decode1(asn1, &real_tag);
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asn1->offset = saved_offset;
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return(tag == real_tag);
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}
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/* PARAMETERS */
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static void
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param_imsi(ASN1_SCK *asn1, proto_tree *tree, guint len)
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{
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guint saved_offset;
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guchar *poctets;
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char bigbuf[1024];
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saved_offset = asn1->offset;
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asn1_string_value_decode(asn1, len, &poctets);
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my_dgt_tbcd_unpack(bigbuf, poctets, len, &Dgt_msid);
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proto_tree_add_text(tree, asn1->tvb,
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saved_offset, len, "IMSI %s", bigbuf);
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}
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|
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static void
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param_AddressString(ASN1_SCK *asn1, proto_tree *tree, guint len)
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{
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guint saved_offset;
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gint32 value;
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|
guchar *poctets;
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gchar *str = NULL;
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char bigbuf[1024];
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saved_offset = asn1->offset;
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asn1_int32_value_decode(asn1, 1, &value);
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other_decode_bitfield_value(bigbuf, value, 0x80, 8);
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proto_tree_add_text(tree, asn1->tvb,
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saved_offset, 1,
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"%s : %sxtension",
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bigbuf, (value & 0x80) ? "No E" : "E");
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switch ((value & 0x70) >> 4)
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{
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case 0x00: str = "unknown"; break;
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case 0x01: str = "International Number"; break;
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case 0x02: str = "National Significant Number"; break;
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|
case 0x03: str = "Network Specific Number"; break;
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case 0x04: str = "Subscriber Number"; break;
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case 0x05: str = "Reserved"; break;
|
|
case 0x06: str = "Abbreviated Number"; break;
|
|
case 0x07: str = "Reserved for extension"; break;
|
|
}
|
|
|
|
other_decode_bitfield_value(bigbuf, value, 0x70, 8);
|
|
proto_tree_add_text(tree, asn1->tvb,
|
|
saved_offset, asn1->offset - saved_offset,
|
|
"%s : %s",
|
|
bigbuf, str);
|
|
|
|
switch (value & 0x0f)
|
|
{
|
|
case 0x00: str = "unknown"; break;
|
|
case 0x01: str = "ISDN/Telephony Numbering (Rec ITU-T E.164)"; break;
|
|
case 0x02: str = "spare"; break;
|
|
case 0x03: str = "Data Numbering (ITU-T Rec. X.121)"; break;
|
|
case 0x04: str = "Telex Numbering (ITU-T Rec. F.69)"; break;
|
|
case 0x05: str = "spare"; break;
|
|
case 0x06: str = "Land Mobile Numbering (ITU-T Rec. E.212)"; break;
|
|
case 0x07: str = "spare"; break;
|
|
case 0x08: str = "National Numbering"; break;
|
|
case 0x09: str = "Private Numbering"; break;
|
|
case 0x0f: str = "Reserved for extension"; break;
|
|
default:
|
|
str = "Reserved";
|
|
break;
|
|
}
|
|
|
|
other_decode_bitfield_value(bigbuf, value, 0x0f, 8);
|
|
proto_tree_add_text(tree, asn1->tvb,
|
|
saved_offset, asn1->offset - saved_offset,
|
|
"%s : %s",
|
|
bigbuf, str);
|
|
|
|
saved_offset = asn1->offset;
|
|
asn1_string_value_decode(asn1, len - 1, &poctets);
|
|
|
|
my_dgt_tbcd_unpack(bigbuf, poctets, len - 1, &Dgt_msid);
|
|
|
|
proto_tree_add_text(tree, asn1->tvb, saved_offset, len - 1,
|
|
"BCD Digits %s", bigbuf);
|
|
}
|
|
|
|
#define NUM_PARAM_1 (sizeof(param_1_strings)/sizeof(value_string))
|
|
static gint ett_param_1[NUM_PARAM_1];
|
|
static void (*param_1_fcn[])(ASN1_SCK *asn1, proto_tree *tree, guint len) = {
|
|
param_imsi, /* IMSI */
|
|
param_AddressString, /* msc-Number */
|
|
NULL, /* NONE */
|
|
};
|
|
|
|
|
|
/* MESSAGES */
|
|
|
|
static void
|
|
op_send_auth_info(ASN1_SCK *asn1, proto_tree *tree)
|
|
{
|
|
void (*param_fcn)(ASN1_SCK *asn1, proto_tree *tree, guint len) = NULL;
|
|
guint off_tree[100], saved_offset, len_offset;
|
|
int num_seq;
|
|
guint tag, len;
|
|
gboolean def_len = FALSE;
|
|
proto_item *item_tree[100], *item;
|
|
proto_tree *seq_tree[100], *use_tree, *subtree;
|
|
gchar *str = NULL;
|
|
gint ett_param_idx, idx;
|
|
|
|
num_seq = 0;
|
|
use_tree = tree;
|
|
|
|
while ((tvb_length_remaining(asn1->tvb, asn1->offset) > 0) &&
|
|
(!check_map_tag(asn1, 0)))
|
|
{
|
|
saved_offset = asn1->offset;
|
|
asn1_id_decode1(asn1, &tag);
|
|
len_offset = asn1->offset;
|
|
asn1_length_decode(asn1, &def_len, &len);
|
|
|
|
if (tag == MAP_SEQ_TAG)
|
|
{
|
|
item =
|
|
proto_tree_add_text(use_tree, asn1->tvb,
|
|
saved_offset, -1, "Sequence");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_params);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_map_tag, asn1->tvb,
|
|
saved_offset, len_offset - saved_offset, tag, "Sequence Tag");
|
|
|
|
if (!def_len)
|
|
{
|
|
proto_tree_add_text(subtree, asn1->tvb,
|
|
len_offset, asn1->offset - len_offset, "Length: Indefinite");
|
|
|
|
seq_tree[num_seq] = subtree;
|
|
item_tree[num_seq] = item;
|
|
off_tree[num_seq] = saved_offset;
|
|
num_seq++;
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_uint(subtree, hf_map_length, asn1->tvb,
|
|
len_offset, asn1->offset - len_offset, len);
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
}
|
|
|
|
use_tree = subtree;
|
|
continue;
|
|
}
|
|
|
|
if (!def_len)
|
|
{
|
|
proto_tree_add_uint_format(use_tree, hf_map_tag, asn1->tvb,
|
|
saved_offset, len_offset - saved_offset, tag, "Parameter Tag");
|
|
proto_tree_add_text(use_tree, asn1->tvb,
|
|
len_offset, asn1->offset - len_offset, "Length: Indefinite");
|
|
|
|
seq_tree[num_seq] = use_tree;
|
|
item_tree[num_seq] = NULL;
|
|
num_seq++;
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
#ifdef MLUM
|
|
/*
|
|
* XXX
|
|
* how do you recognize the correct parameters here ?
|
|
*/
|
|
str = my_match_strval((guint32) tag, param_1_strings, &idx);
|
|
#else
|
|
str = NULL;
|
|
idx = 0;
|
|
#endif
|
|
|
|
if (str == NULL)
|
|
{
|
|
str = "Parameter";
|
|
ett_param_idx = ett_param;
|
|
param_fcn = NULL;
|
|
}
|
|
else
|
|
{
|
|
ett_param_idx = ett_param_1[idx];
|
|
param_fcn = param_1_fcn[idx];
|
|
}
|
|
|
|
item =
|
|
proto_tree_add_text(use_tree, asn1->tvb,
|
|
saved_offset, -1, str);
|
|
|
|
subtree = proto_item_add_subtree(item, ett_param_idx);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_map_tag, asn1->tvb,
|
|
saved_offset, len_offset - saved_offset, tag, "Parameter Tag");
|
|
|
|
proto_tree_add_uint(subtree, hf_map_length, asn1->tvb,
|
|
len_offset, asn1->offset - len_offset, len);
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
|
|
if (param_fcn == NULL)
|
|
{
|
|
proto_tree_add_text(subtree, asn1->tvb,
|
|
asn1->offset, len, "Parameter Data");
|
|
|
|
asn1->offset += len;
|
|
}
|
|
else
|
|
{
|
|
(*param_fcn)(asn1, subtree, len);
|
|
}
|
|
}
|
|
|
|
if (tvb_length_remaining(asn1->tvb, asn1->offset) <=0) break;
|
|
|
|
while ((num_seq > 0) &&
|
|
asn1_eoc(asn1, -1))
|
|
{
|
|
saved_offset = asn1->offset;
|
|
asn1_eoc_decode(asn1, -1);
|
|
|
|
proto_tree_add_text(seq_tree[num_seq-1], asn1->tvb,
|
|
saved_offset, asn1->offset - saved_offset, "End of Contents");
|
|
|
|
if (item_tree[num_seq-1] != NULL)
|
|
{
|
|
proto_item_set_len(item_tree[num_seq-1], asn1->offset - off_tree[num_seq-1]);
|
|
}
|
|
|
|
num_seq--;
|
|
}
|
|
}
|
|
}
|
|
|
|
#define GSM_MAP_NUM_OP (sizeof(opr_code_strings)/sizeof(value_string))
|
|
static gint ett_op[GSM_MAP_NUM_OP];
|
|
static void (*op_fcn[])(ASN1_SCK *asn1, proto_tree *tree) = {
|
|
NULL, /* Update Location */
|
|
NULL, /* Cancel Location */
|
|
NULL, /* Purge MS */
|
|
NULL, /* Send Identification */
|
|
NULL, /* Update GPRS Location */
|
|
NULL, /* Detach IMSI */
|
|
NULL, /* Note MM Event */
|
|
NULL, /* Prepare Handover */
|
|
NULL, /* Prepare Subsequent Handover */
|
|
NULL, /* Perform Handover */
|
|
NULL, /* Perform Subsequent Handover */
|
|
NULL, /* Send End Signal */
|
|
NULL, /* Process Access Signalling */
|
|
NULL, /* Forward Access Signalling */
|
|
op_send_auth_info, /* Send Authentication Info */
|
|
NULL, /* Authentication Failure Report */
|
|
NULL, /* Check IMEI */
|
|
NULL, /* Reset */
|
|
NULL, /* Restore Data */
|
|
NULL, /* Forward Check SS Indication */
|
|
NULL, /* Activate Trace Mode */
|
|
NULL, /* Deactivate Trace Mode */
|
|
NULL, /* Send IMSI */
|
|
NULL, /* Trace Subscriber Activity */
|
|
NULL, /* Note Internal Handover */
|
|
NULL, /* Send Routing Info */
|
|
NULL, /* Provide Roaming Number */
|
|
NULL, /* Provide SIWFS Number */
|
|
NULL, /* SIWFS Signalling Modify */
|
|
NULL, /* Resume Call Handling */
|
|
NULL, /* Set Reporting State */
|
|
NULL, /* Status Report */
|
|
NULL, /* Remote User Free */
|
|
NULL, /* Prepare Group Call */
|
|
NULL, /* Send Group Call End Signalling */
|
|
NULL, /* Process Group Call Signalling */
|
|
NULL, /* Forward Group Call Signalling */
|
|
NULL, /* IST Alert */
|
|
NULL, /* IST Command */
|
|
NULL, /* Register SS */
|
|
NULL, /* Erase SS */
|
|
NULL, /* Activate SS */
|
|
NULL, /* Deactivate SS */
|
|
NULL, /* Interogate SS */
|
|
NULL, /* Process Unstructured SS Request */
|
|
NULL, /* Unstructured SS Request */
|
|
NULL, /* Unstructured SS Notify */
|
|
NULL, /* Register Password */
|
|
NULL, /* Get Password */
|
|
NULL, /* Register CC Entry */
|
|
NULL, /* Erase CC Entry */
|
|
NULL, /* Begin Subscriber Activity */
|
|
NULL, /* Process Unstructured SS Data */
|
|
NULL, /* SS Invocation Notification */
|
|
NULL, /* MO Forward SM */
|
|
NULL, /* MT Forward SM */
|
|
NULL, /* Send Routing Info For SM */
|
|
NULL, /* Report SM Delivery Status */
|
|
NULL, /* Inform Service Center */
|
|
NULL, /* Alert Service Center */
|
|
NULL, /* Ready For SM */
|
|
NULL, /* Note Subscriber Present */
|
|
NULL, /* Alert SC Without Result */
|
|
NULL, /* Insert Subscriber Data */
|
|
NULL, /* Delete Subscriber Data */
|
|
NULL, /* Provide Subscriber Info */
|
|
NULL, /* Any Time Interrogation */
|
|
NULL, /* Send Parameters */
|
|
NULL, /* Any Time Subscription Interrogation */
|
|
NULL, /* Any Time Modification */
|
|
NULL, /* Note Subscriber Data Modified */
|
|
NULL, /* Send Routing Info For GPRS */
|
|
NULL, /* Failure Report */
|
|
NULL, /* Note MS Present For GPRS */
|
|
NULL, /* Provide Subscriber Location */
|
|
NULL, /* Send Routing Info For LCS */
|
|
NULL, /* Subscriber Location Report */
|
|
|
|
NULL, /* NONE */
|
|
};
|
|
|
|
|
|
/* GENERIC MAP DISSECTOR FUNCTIONS */
|
|
|
|
static int
|
|
dissect_map_tag(ASN1_SCK *asn1, proto_tree *tree, guint *tag, guchar * str,
|
|
proto_item **item_p)
|
|
{
|
|
guint saved_offset, real_tag;
|
|
|
|
saved_offset = asn1->offset;
|
|
asn1_id_decode1(asn1, &real_tag);
|
|
if ((*tag != (guint) -1) && (real_tag != *tag))
|
|
{
|
|
asn1->offset = saved_offset;
|
|
return(MAP_FAIL);
|
|
}
|
|
|
|
*item_p =
|
|
proto_tree_add_uint_format(tree, hf_map_tag, asn1->tvb,
|
|
saved_offset, asn1->offset - saved_offset,
|
|
real_tag, str);
|
|
|
|
return(MAP_OK);
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_map_len(ASN1_SCK *asn1, proto_tree *tree, gboolean *def_len, guint *len)
|
|
{
|
|
guint saved_offset;
|
|
|
|
saved_offset = asn1->offset;
|
|
*len = 0;
|
|
*def_len = FALSE;
|
|
asn1_length_decode(asn1, def_len, len);
|
|
|
|
if (*def_len)
|
|
{
|
|
proto_tree_add_uint(tree, hf_map_length, asn1->tvb, saved_offset,
|
|
asn1->offset - saved_offset, *len);
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_text(tree, asn1->tvb,
|
|
saved_offset, asn1->offset - saved_offset, "Length: Indefinite");
|
|
}
|
|
|
|
return(MAP_OK);
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_map_integer(ASN1_SCK *asn1, proto_tree *tree, guint len, guchar * str)
|
|
{
|
|
guint saved_offset;
|
|
gint32 invokeId;
|
|
|
|
saved_offset = asn1->offset;
|
|
asn1_int32_value_decode(asn1, len, &invokeId);
|
|
|
|
proto_tree_add_int_format(tree, hf_map_int, asn1->tvb,
|
|
saved_offset, asn1->offset - saved_offset,
|
|
invokeId, "%s %d", str, invokeId);
|
|
|
|
return(MAP_OK);
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_map_invokeId(ASN1_SCK *asn1, proto_tree *tree)
|
|
{
|
|
guint saved_offset = 0;
|
|
guint len;
|
|
guint tag;
|
|
proto_item *item, *null_item;
|
|
proto_tree *subtree;
|
|
gboolean def_len;
|
|
|
|
if (check_map_tag(asn1, MAP_INVOKE_ID_TAG))
|
|
{
|
|
saved_offset = asn1->offset;
|
|
item =
|
|
proto_tree_add_text(tree, asn1->tvb,
|
|
saved_offset, -1, "Invoke Id");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_component);
|
|
|
|
tag = -1;
|
|
dissect_map_tag(asn1, subtree, &tag, "Invoke Id Tag", &null_item);
|
|
dissect_map_len(asn1, subtree, &def_len, &len);
|
|
dissect_map_integer(asn1, subtree, len, "Invoke Id:");
|
|
|
|
proto_item_set_len(item, asn1->offset - saved_offset);
|
|
}
|
|
|
|
return(MAP_OK);
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_map_problem(ASN1_SCK *asn1, proto_tree *tree)
|
|
{
|
|
guint orig_offset, saved_offset = 0;
|
|
guint len, tag_len;
|
|
guint tag;
|
|
proto_tree *subtree;
|
|
proto_item *item = NULL;
|
|
gchar *str = NULL;
|
|
gchar *type_str = NULL;
|
|
gint32 spec;
|
|
gboolean def_len;
|
|
|
|
orig_offset = asn1->offset;
|
|
saved_offset = asn1->offset;
|
|
asn1_id_decode1(asn1, &tag);
|
|
tag_len = asn1->offset - saved_offset;
|
|
|
|
item =
|
|
proto_tree_add_text(tree, asn1->tvb,
|
|
saved_offset, -1, "Problem Code");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_problem);
|
|
|
|
dissect_map_len(asn1, subtree, &def_len, &len);
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
|
|
if (len != 1)
|
|
{
|
|
proto_tree_add_text(subtree, asn1->tvb,
|
|
asn1->offset, len, "Unknown encoding of Problem Code");
|
|
|
|
asn1->offset += len;
|
|
return;
|
|
}
|
|
|
|
saved_offset = asn1->offset;
|
|
asn1_int32_value_decode(asn1, 1, &spec);
|
|
|
|
switch (tag)
|
|
{
|
|
case MAP_GE_PROBLEM_TAG:
|
|
type_str = "General Problem";
|
|
switch (spec)
|
|
{
|
|
case 0: str = "Unrecognized Component"; break;
|
|
case 1: str = "Mistyped Component"; break;
|
|
case 2: str = "Badly Structured Component"; break;
|
|
default:
|
|
str = "Undefined";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case MAP_IN_PROBLEM_TAG:
|
|
type_str = "Invoke";
|
|
switch (spec)
|
|
{
|
|
case 0: str = "Duplicate Invoke ID"; break;
|
|
case 1: str = "Unrecognized Operation"; break;
|
|
case 2: str = "Mistyped Parameter"; break;
|
|
case 3: str = "Resource Limitation"; break;
|
|
case 4: str = "Initiating Release"; break;
|
|
case 5: str = "Unrecognized Linked ID"; break;
|
|
case 6: str = "Linked Response Unexpected"; break;
|
|
case 7: str = "Unexpected Linked Operation"; break;
|
|
default:
|
|
str = "Undefined";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case MAP_RR_PROBLEM_TAG:
|
|
type_str = "Return Result";
|
|
switch (spec)
|
|
{
|
|
case 0: str = "Unrecognized Invoke ID"; break;
|
|
case 1: str = "Return Result Unexpected"; break;
|
|
case 2: str = "Mistyped Parameter"; break;
|
|
default:
|
|
str = "Undefined";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case MAP_RE_PROBLEM_TAG:
|
|
type_str = "Return Error";
|
|
switch (spec)
|
|
{
|
|
case 0: str = "Unrecognized Invoke ID"; break;
|
|
case 1: str = "Return Error Unexpected"; break;
|
|
case 2: str = "Unrecognized Error"; break;
|
|
case 3: str = "Unexpected Error"; break;
|
|
case 4: str = "Mistyped Parameter"; break;
|
|
default:
|
|
str = "Undefined";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
type_str = "Undefined";
|
|
break;
|
|
}
|
|
|
|
proto_tree_add_uint_format(subtree, hf_map_tag, asn1->tvb,
|
|
orig_offset, tag_len, tag, type_str);
|
|
|
|
proto_tree_add_text(subtree, asn1->tvb,
|
|
saved_offset, 1, "Problem Specifier %s", str);
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_map_lnkId(ASN1_SCK *asn1, proto_tree *tree)
|
|
{
|
|
guint saved_offset = 0;
|
|
guint len;
|
|
guint tag;
|
|
proto_item *item, *null_item;
|
|
proto_tree *subtree;
|
|
gboolean def_len;
|
|
|
|
if (check_map_tag(asn1, MAP_LINK_ID_TAG))
|
|
{
|
|
saved_offset = asn1->offset;
|
|
item =
|
|
proto_tree_add_text(tree, asn1->tvb,
|
|
saved_offset, -1, "Linked Id");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_component);
|
|
|
|
tag = -1;
|
|
dissect_map_tag(asn1, tree, &tag, "Linked Id Tag", &null_item);
|
|
dissect_map_len(asn1, tree, &def_len, &len);
|
|
dissect_map_integer(asn1, tree, len, "Linked Id:");
|
|
|
|
proto_item_set_len(item, asn1->offset - saved_offset);
|
|
}
|
|
|
|
return(MAP_OK);
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_map_opr_code(ASN1_SCK *asn1, packet_info *pinfo, proto_tree *tree, gint *op_idx_p)
|
|
{
|
|
guint saved_offset = 0;
|
|
guint len;
|
|
guint tag;
|
|
gint32 val;
|
|
gchar *str = NULL;
|
|
proto_item *item;
|
|
proto_tree *subtree;
|
|
gboolean def_len;
|
|
|
|
if (check_map_tag(asn1, MAP_OPR_CODE_TAG))
|
|
{
|
|
tag = -1;
|
|
dissect_map_tag(asn1, tree, &tag, "Operation Code", &item);
|
|
subtree = proto_item_add_subtree(item, ett_opr_code);
|
|
dissect_map_len(asn1, subtree, &def_len, &len);
|
|
|
|
saved_offset = asn1->offset;
|
|
asn1_int32_value_decode(asn1, len, &val);
|
|
proto_tree_add_int(subtree, hf_map_opr_code, asn1->tvb, saved_offset,
|
|
asn1->offset - saved_offset, val);
|
|
|
|
str = my_match_strval(val, opr_code_strings, op_idx_p);
|
|
|
|
if (NULL == str) return(MAP_FAIL);
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
{
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", str);
|
|
}
|
|
}
|
|
|
|
return(MAP_OK);
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_map_params(ASN1_SCK *asn1, proto_tree *tree)
|
|
{
|
|
guint off_tree[100], saved_offset, len_offset;
|
|
int num_seq;
|
|
guint tag, len;
|
|
gboolean def_len = FALSE;
|
|
proto_item *item_tree[100], *item;
|
|
proto_tree *seq_tree[100], *use_tree, *subtree;
|
|
|
|
num_seq = 0;
|
|
use_tree = tree;
|
|
|
|
while ((tvb_length_remaining(asn1->tvb, asn1->offset) > 0) &&
|
|
(!check_map_tag(asn1, 0)))
|
|
{
|
|
saved_offset = asn1->offset;
|
|
asn1_id_decode1(asn1, &tag);
|
|
len_offset = asn1->offset;
|
|
asn1_length_decode(asn1, &def_len, &len);
|
|
|
|
if (tag == MAP_SEQ_TAG)
|
|
{
|
|
item =
|
|
proto_tree_add_text(use_tree, asn1->tvb,
|
|
saved_offset, -1, "Sequence");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_params);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_map_tag, asn1->tvb,
|
|
saved_offset, len_offset - saved_offset, tag, "Sequence Tag");
|
|
|
|
if (!def_len)
|
|
{
|
|
proto_tree_add_text(subtree, asn1->tvb,
|
|
len_offset, asn1->offset - len_offset, "Length: Indefinite");
|
|
|
|
seq_tree[num_seq] = subtree;
|
|
item_tree[num_seq] = item;
|
|
off_tree[num_seq] = saved_offset;
|
|
num_seq++;
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_uint(subtree, hf_map_length, asn1->tvb,
|
|
len_offset, asn1->offset - len_offset, len);
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
}
|
|
|
|
use_tree = subtree;
|
|
continue;
|
|
}
|
|
|
|
if (!def_len)
|
|
{
|
|
proto_tree_add_uint_format(use_tree, hf_map_tag, asn1->tvb,
|
|
saved_offset, len_offset - saved_offset, tag, "Parameter Tag");
|
|
proto_tree_add_text(use_tree, asn1->tvb,
|
|
len_offset, asn1->offset - len_offset, "Length: Indefinite");
|
|
|
|
seq_tree[num_seq] = use_tree;
|
|
item_tree[num_seq] = NULL;
|
|
num_seq++;
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
item =
|
|
proto_tree_add_text(use_tree, asn1->tvb,
|
|
saved_offset, -1, "Parameter");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_param);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_map_tag, asn1->tvb,
|
|
saved_offset, len_offset - saved_offset, tag, "Parameter Tag");
|
|
|
|
proto_tree_add_uint(subtree, hf_map_length, asn1->tvb,
|
|
len_offset, asn1->offset - len_offset, len);
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
|
|
proto_tree_add_text(subtree, asn1->tvb,
|
|
asn1->offset, len, "Parameter Data");
|
|
|
|
asn1->offset += len;
|
|
}
|
|
|
|
if (tvb_length_remaining(asn1->tvb, asn1->offset) <=0) break;
|
|
|
|
while ((num_seq > 0) &&
|
|
asn1_eoc(asn1, -1))
|
|
{
|
|
saved_offset = asn1->offset;
|
|
asn1_eoc_decode(asn1, -1);
|
|
|
|
proto_tree_add_text(seq_tree[num_seq-1], asn1->tvb,
|
|
saved_offset, asn1->offset - saved_offset, "End of Contents");
|
|
|
|
if (item_tree[num_seq-1] != NULL)
|
|
{
|
|
proto_item_set_len(item_tree[num_seq-1], asn1->offset - off_tree[num_seq-1]);
|
|
}
|
|
|
|
num_seq--;
|
|
}
|
|
}
|
|
|
|
return(MAP_OK);
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_map_eoc(ASN1_SCK *asn1, proto_tree *tree)
|
|
{
|
|
guint saved_offset;
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
if (tvb_length_remaining(asn1->tvb, saved_offset) <= 0)
|
|
{
|
|
return(MAP_FAIL);
|
|
}
|
|
|
|
if (!asn1_eoc(asn1, -1))
|
|
{
|
|
return(MAP_FAIL);
|
|
}
|
|
|
|
asn1_eoc_decode(asn1, -1);
|
|
|
|
proto_tree_add_text(tree, asn1->tvb,
|
|
saved_offset, asn1->offset - saved_offset, "End of Contents");
|
|
|
|
return(MAP_OK);
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_map_invoke(ASN1_SCK *asn1, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_tree *subtree;
|
|
guint saved_offset = 0;
|
|
guint len;
|
|
guint tag;
|
|
proto_item *item;
|
|
gint op_idx;
|
|
gboolean def_len;
|
|
int ret;
|
|
|
|
saved_offset = asn1->offset;
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
item = proto_tree_add_text(tree, asn1->tvb, saved_offset, -1, "Components");
|
|
subtree = proto_item_add_subtree(item, ett_components);
|
|
proto_tree_add_uint_format(subtree, hf_map_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
|
tag, "Invoke Type Tag");
|
|
|
|
dissect_map_len(asn1, subtree, &def_len, &len);
|
|
|
|
if (def_len)
|
|
{
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
}
|
|
|
|
dissect_map_invokeId(asn1, subtree);
|
|
|
|
dissect_map_lnkId(asn1, subtree);
|
|
|
|
if (dissect_map_opr_code(asn1, pinfo, subtree, &op_idx) == MAP_OK)
|
|
{
|
|
/*
|
|
* decode elements
|
|
*/
|
|
if (op_fcn[op_idx] == NULL)
|
|
{
|
|
dissect_map_params(asn1, subtree);
|
|
}
|
|
else
|
|
{
|
|
(*op_fcn[op_idx])(asn1, subtree);
|
|
}
|
|
}
|
|
|
|
if (!def_len)
|
|
{
|
|
dissect_map_eoc(asn1, subtree);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_map_rr(ASN1_SCK *asn1, packet_info *pinfo, proto_tree *tree, gchar *str)
|
|
{
|
|
guint tag, len, comp_len;
|
|
gint op_idx;
|
|
guint saved_offset;
|
|
proto_item *item, *null_item;
|
|
proto_tree *subtree;
|
|
gboolean def_len;
|
|
gboolean comp_def_len;
|
|
|
|
tag = -1;
|
|
saved_offset = asn1->offset;
|
|
asn1_id_decode1(asn1, &tag);
|
|
|
|
item = proto_tree_add_text(tree, asn1->tvb, saved_offset, -1, "Components");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_components);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_map_tag, asn1->tvb,
|
|
saved_offset, asn1->offset - saved_offset, tag, str);
|
|
|
|
dissect_map_len(asn1, subtree, &comp_def_len, &comp_len);
|
|
|
|
if (comp_def_len)
|
|
{
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + comp_len);
|
|
}
|
|
|
|
dissect_map_invokeId(asn1, subtree);
|
|
|
|
if (check_map_tag(asn1, MAP_SEQ_TAG))
|
|
{
|
|
tag = -1;
|
|
dissect_map_tag(asn1, subtree, &tag, "Sequence Tag", &null_item);
|
|
dissect_map_len(asn1, subtree, &def_len, &len);
|
|
}
|
|
|
|
if (dissect_map_opr_code(asn1, pinfo, subtree, &op_idx) == MAP_OK)
|
|
{
|
|
dissect_map_params(asn1, subtree);
|
|
}
|
|
|
|
if (!comp_def_len)
|
|
{
|
|
dissect_map_eoc(asn1, subtree);
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_map_re(ASN1_SCK *asn1, proto_tree *tree)
|
|
{
|
|
guint tag, len, comp_len;
|
|
guint saved_offset;
|
|
proto_item *item, *null_item;
|
|
proto_tree *subtree;
|
|
gboolean def_len;
|
|
|
|
tag = -1;
|
|
saved_offset = asn1->offset;
|
|
asn1_id_decode1(asn1, &tag);
|
|
|
|
item = proto_tree_add_text(tree, asn1->tvb, saved_offset, -1, "Components");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_components);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_map_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
|
tag, "Return Error Type Tag");
|
|
|
|
dissect_map_len(asn1, subtree, &def_len, &comp_len);
|
|
|
|
if (def_len)
|
|
{
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + comp_len);
|
|
}
|
|
|
|
saved_offset = asn1->offset;
|
|
dissect_map_invokeId(asn1, subtree);
|
|
|
|
#define MAP_LOCAL_ERR_CODE_TAG 0x2
|
|
#define MAP_GBL_ERR_CODE_TAG 0x6
|
|
if (check_map_tag(asn1, MAP_LOCAL_ERR_CODE_TAG))
|
|
{
|
|
tag = -1;
|
|
dissect_map_tag(asn1, subtree, &tag, "Local Error Code Tag", &null_item);
|
|
}
|
|
else if (check_map_tag(asn1, MAP_GBL_ERR_CODE_TAG))
|
|
{
|
|
tag = -1;
|
|
dissect_map_tag(asn1, subtree, &tag, "Global Error Code Tag", &null_item);
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_text(subtree, asn1->tvb, asn1->offset, comp_len,
|
|
"Unknown Error Code");
|
|
|
|
asn1->offset += (comp_len - (asn1->offset - saved_offset));
|
|
return(MAP_OK);
|
|
}
|
|
|
|
dissect_map_len(asn1, subtree, &def_len, &len);
|
|
dissect_map_integer(asn1, subtree, len, "Error Code:");
|
|
|
|
dissect_map_params(asn1, subtree);
|
|
|
|
if (!def_len)
|
|
{
|
|
dissect_map_eoc(asn1, subtree);
|
|
}
|
|
|
|
return(MAP_OK);
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_map_reject(ASN1_SCK *asn1, proto_tree *tree)
|
|
{
|
|
guint tag, len;
|
|
guint saved_offset;
|
|
proto_item *item;
|
|
proto_tree *subtree;
|
|
gboolean def_len;
|
|
|
|
tag = -1;
|
|
|
|
saved_offset = asn1->offset;
|
|
asn1_id_decode1(asn1, &tag);
|
|
|
|
item = proto_tree_add_text(tree, asn1->tvb, saved_offset, -1, "Components");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_components);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_map_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
|
tag, "Reject Type Tag");
|
|
|
|
dissect_map_len(asn1, subtree, &def_len, &len);
|
|
|
|
if (def_len)
|
|
{
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
}
|
|
|
|
dissect_map_invokeId(asn1, subtree);
|
|
dissect_map_problem(asn1, subtree);
|
|
|
|
if (!def_len)
|
|
{
|
|
dissect_map_eoc(asn1, subtree);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_map_message(packet_info *pinfo, proto_tree *map_tree, ASN1_SCK *asn1)
|
|
{
|
|
guint tag;
|
|
guint saved_offset;
|
|
gchar *str = NULL;
|
|
static int i = 0;
|
|
|
|
saved_offset = asn1->offset;
|
|
asn1_id_decode1(asn1, &tag);
|
|
asn1->offset = saved_offset;
|
|
|
|
str = match_strval(tag, tag_strings);
|
|
|
|
if (NULL == str) return;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
{
|
|
if (0 == i)
|
|
{
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", str);
|
|
}
|
|
else
|
|
{
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "& %s ", str);
|
|
}
|
|
}
|
|
|
|
switch(tag)
|
|
{
|
|
case MAP_TC_INVOKE :
|
|
dissect_map_invoke(asn1, pinfo, map_tree);
|
|
break;
|
|
|
|
case MAP_TC_RRL :
|
|
dissect_map_rr(asn1, pinfo, map_tree, "Return Result(Last) Type Tag");
|
|
break;
|
|
|
|
case MAP_TC_RE :
|
|
dissect_map_re(asn1, map_tree);
|
|
break;
|
|
|
|
case MAP_TC_REJECT :
|
|
dissect_map_reject(asn1, map_tree);
|
|
break;
|
|
|
|
case MAP_TC_RRN :
|
|
dissect_map_rr(asn1, pinfo, map_tree, "Return Result(Not Last) Type Tag");
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_text(map_tree, asn1->tvb, saved_offset, -1,
|
|
"Message type not handled, ignoring");
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_map(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *map_tree;
|
|
ASN1_SCK asn1;
|
|
int offset = 0;
|
|
|
|
/*
|
|
* Make entries in Protocol column on summary display
|
|
*/
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
{
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "GSM MAP");
|
|
}
|
|
|
|
|
|
/* In the interest of speed, if "tree" is NULL, don't do any work not
|
|
* necessary to generate protocol tree items.
|
|
*/
|
|
if (tree)
|
|
{
|
|
/* create display subtree for the protocol */
|
|
ti = proto_tree_add_item(tree, proto_map, tvb, 0, -1, FALSE);
|
|
|
|
map_tree = proto_item_add_subtree(ti, ett_map);
|
|
|
|
asn1_open(&asn1, tvb, offset);
|
|
|
|
dissect_map_message(pinfo, map_tree, &asn1);
|
|
|
|
asn1_close(&asn1, &offset);
|
|
}
|
|
}
|
|
|
|
|
|
/* Register the protocol with Ethereal */
|
|
|
|
void
|
|
proto_register_map(void)
|
|
{
|
|
guint i;
|
|
gint last_offset;
|
|
|
|
/* Setup list of header fields See Section 1.6.1 for details*/
|
|
static hf_register_info hf[] =
|
|
{
|
|
{ &hf_map_tag,
|
|
{ "Tag", "map.msgtype",
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_map_length,
|
|
{ "Length", "map.len",
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_map_opr_code,
|
|
{ "Operation Code", "map.oprcode",
|
|
FT_INT32, BASE_DEC, VALS(opr_code_strings), 0,
|
|
"", HFILL }
|
|
},
|
|
{ &hf_map_int,
|
|
{ "Integer Data", "map.data",
|
|
FT_INT32, BASE_DEC, 0, 0,
|
|
"", HFILL }
|
|
},
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
#define NUM_INDIVIDUAL_PARAMS 7
|
|
static gint *ett[NUM_INDIVIDUAL_PARAMS+GSM_MAP_NUM_OP+NUM_PARAM_1];
|
|
|
|
memset((void *) ett, 0, sizeof(ett));
|
|
|
|
ett[0] = &ett_map;
|
|
ett[1] = &ett_opr_code;
|
|
ett[2] = &ett_component;
|
|
ett[3] = &ett_components;
|
|
ett[4] = &ett_param;
|
|
ett[5] = &ett_params;
|
|
ett[6] = &ett_problem;
|
|
|
|
last_offset = NUM_INDIVIDUAL_PARAMS;
|
|
|
|
for (i=0; i < GSM_MAP_NUM_OP; i++, last_offset++)
|
|
{
|
|
ett_op[i] = -1;
|
|
ett[last_offset] = &ett_op[i];
|
|
}
|
|
|
|
for (i=0; i < NUM_PARAM_1; i++, last_offset++)
|
|
{
|
|
ett_param_1[i] = -1;
|
|
ett[last_offset] = &ett_param_1[i];
|
|
}
|
|
|
|
/* Register the protocol name and description */
|
|
proto_map =
|
|
proto_register_protocol("GSM Mobile Application Part",
|
|
"GSM MAP", "gsm_map");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_map, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_map(void)
|
|
{
|
|
dissector_handle_t map_handle;
|
|
|
|
map_handle = create_dissector_handle(dissect_map, proto_map);
|
|
dissector_add("tcap.itu_ssn", 6, map_handle);
|
|
dissector_add("tcap.itu_ssn", 7, map_handle);
|
|
dissector_add("tcap.itu_ssn", 8, map_handle);
|
|
dissector_add("tcap.itu_ssn", 9, map_handle);
|
|
}
|