2003-10-02 06:13:29 +00:00
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/* packet-tcap.c
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* Routines for TCAP dissection
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*
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* Copyright 2000, Samuel Qu <samuel.qu [AT] utstar.com>,
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*
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* Michael Lum <mlum [AT] telostech.com>,
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* Modified for ANSI TCAP support and many changes for
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* EOC matching. (2003)
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*
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* (append your name here for newer version)
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*
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2003-11-14 01:35:08 +00:00
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* $Id: packet-tcap.c,v 1.3 2003/11/14 01:35:08 guy Exp $
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2003-10-02 06:13:29 +00:00
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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 WHATEVER_FILE_YOU_USED (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 <gmodule.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include <glib.h>
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#ifdef NEED_SNPRINTF_H
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# include "snprintf.h"
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#endif
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#include <epan/packet.h>
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#include "prefs.h"
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#include "packet-tcap.h"
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#include "asn1.h"
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Tcap_Standard_Type tcap_standard = ITU_TCAP_STANDARD;
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void proto_reg_handoff_tcap(void);
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/* saved pinfo */
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static packet_info *g_pinfo = NULL;
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static proto_tree *g_tcap_tree = NULL;
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static gboolean g_tcap_ends_def_len = FALSE;
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/* Initialize the protocol and registered fields */
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static int proto_tcap = -1;
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static int hf_tcap_message_type = -1;
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static int hf_ansi_tcap_message_type = -1;
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static int hf_tcap_none = -1;
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static int hf_tcap_tag = -1;
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static int hf_tcap_length = -1;
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static int hf_tcap_bytes = -1;
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static int hf_tcap_app_con_name = -1;
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static int hf_tcap_id = -1;
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static int hf_tcap_tid = -1;
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static int hf_tcap_ssn = -1; /* faked */
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static int hf_tcap_dlg_type = -1;
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static int hf_tcap_int = -1;
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/* Initialize the subtree pointers */
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static gint ett_tcap = -1;
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/* Samuel */
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static gint ett_otid = -1;
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static gint ett_dtid = -1;
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static gint ett_dlg_portion = -1;
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static gint ett_dlg_req = -1;
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static gint ett_dlg_rsp = -1;
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2003-11-14 01:35:08 +00:00
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static gint ett_dlg_abort = -1;
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2003-10-02 06:13:29 +00:00
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static gint ett_cmp_portion = -1;
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static gint ett_reason = -1;
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static gint ett_component = -1;
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static gint ett_problem = -1;
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static gint ett_error = -1;
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static gint ett_params = -1;
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static gint ett_param = -1;
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static dissector_handle_t data_handle;
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static dissector_table_t tcap_itu_ssn_dissector_table; /* map use ssn in sccp */
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static dissector_table_t tcap_ansi_ssn_dissector_table; /* map use ssn in sccp */
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static gboolean lock_info_col = TRUE;
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#define TC_SEQ_TAG 0x30
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#define TC_SET_TAG 0x31
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#define TC_EOC_LEN 2 /* 0x00 0x00 */
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/* TCAP transaction message type definition - Samuel */
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#define ST_MSG_TYP_UNI 0x61 /*0b01100001*/
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#define ST_MSG_TYP_BGN 0x62 /*0b01100010*/
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#define ST_MSG_TYP_CNT 0x65 /*0b01100101*/
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#define ST_MSG_TYP_END 0x64 /*0b01100100*/
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#define ST_MSG_TYP_PABT 0x67 /*0b01100111*/
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static const value_string msg_type_strings[] = {
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{ ST_MSG_TYP_UNI, "TC-UNI" },
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{ ST_MSG_TYP_BGN, "TC-BEGIN" },
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{ ST_MSG_TYP_CNT, "TC-CONTINUE" },
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{ ST_MSG_TYP_END, "TC-END" },
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{ ST_MSG_TYP_PABT, "TC-PABORT" },
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{ 0, NULL },
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};
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/* ANSI TCAP transaction message type definition */
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#define ANSI_ST_MSG_TYP_UNI 0xe1
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#define ANSI_ST_MSG_TYP_QWP 0xe2
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#define ANSI_ST_MSG_TYP_QWOP 0xe3
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#define ANSI_ST_MSG_TYP_RSP 0xe4
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#define ANSI_ST_MSG_TYP_CWP 0xe5
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#define ANSI_ST_MSG_TYP_CWOP 0xe6
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2003-11-14 01:35:08 +00:00
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#define ANSI_ST_MSG_TYP_ABT 0xf6
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2003-10-02 06:13:29 +00:00
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static const value_string ansi_msg_type_strings[] = {
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{ ANSI_ST_MSG_TYP_UNI, "TC-UNI" },
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{ ANSI_ST_MSG_TYP_QWP, "TC-QUERY W PERM" },
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{ ANSI_ST_MSG_TYP_QWOP, "TC-QUERY WO PERM" },
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{ ANSI_ST_MSG_TYP_RSP, "TC-RESPONSE" },
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{ ANSI_ST_MSG_TYP_CWP, "TC-CONV W PERM" },
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{ ANSI_ST_MSG_TYP_CWOP, "TC-CONV WO PERM" },
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2003-11-14 01:35:08 +00:00
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{ ANSI_ST_MSG_TYP_ABT, "TC-ABORT" },
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2003-10-02 06:13:29 +00:00
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{ 0, NULL },
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};
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#define ST_ANSI_CMP_TAG 0xe8
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#define ST_ANSI_TID_TAG 0xc7
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/* TCAP TID tag value - Samuel */
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#define ST_TID_SOURCE 0
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#define ST_TID_DEST 1
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#define ST_ITU_ORG_TID_TAG 0x48 /*0b01001000*/
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#define ST_ITU_DST_TID_TAG 0x49 /*0b01001001*/
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#define ST_ITU_PABT_TAG 0x4a /*0b01001010*/
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#define ST_ITU_DLG_TAG 0x6b
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#define ST_ITU_CMP_TAG 0x6c
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static const value_string tid_strings[] = {
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{ ST_ITU_ORG_TID_TAG, "Source Transaction ID" },
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{ ST_ITU_DST_TID_TAG, "Destination Transaction ID" },
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{ 0, NULL },
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};
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/* TCAP dialog type */
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#define TC_DLG_REQ 0x60
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#define TC_DLG_RSP 0x61
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#define TC_DLG_ABRT 0x64
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static const value_string dlg_type_strings[] = {
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{ TC_DLG_REQ , "Dialogue Request" },
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{ TC_DLG_RSP , "Dialogue Response" },
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{ TC_DLG_ABRT, "Dialogue Abort" },
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{ 0, NULL },
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};
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/* TCAP component type */
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#define TC_INVOKE 0xa1
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#define TC_RRL 0xa2
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#define TC_RE 0xa3
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#define TC_REJECT 0xa4
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#define TC_RRN 0xa7
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/* ANSI TCAP component type */
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#define ANSI_TC_INVOKE_L 0xe9
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#define ANSI_TC_RRL 0xea
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#define ANSI_TC_RE 0xeb
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#define ANSI_TC_REJECT 0xec
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#define ANSI_TC_INVOKE_N 0xed
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#define ANSI_TC_RRN 0xee
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#define TC_DS_OK 1
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#define TC_DS_FAIL 0
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2003-10-16 18:15:54 +00:00
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2003-10-02 06:13:29 +00:00
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/* dissect length */
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static int
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dissect_tcap_len(ASN1_SCK *asn1, proto_tree *tree, gboolean *def_len, guint *len)
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{
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guint saved_offset;
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int ret;
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saved_offset = asn1->offset;
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*len = 0;
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*def_len = FALSE;
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ret = asn1_length_decode(asn1, def_len, len);
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if (*def_len)
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{
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proto_tree_add_uint(tree, hf_tcap_length, asn1->tvb, saved_offset, asn1->offset - saved_offset, *len);
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}
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else
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{
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proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb,
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saved_offset, asn1->offset - saved_offset, "Length: Indefinite");
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}
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return TC_DS_OK;
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}
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static int
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dissect_tcap_eoc(ASN1_SCK *asn1, proto_tree *tree)
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{
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guint saved_offset, ret;
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saved_offset = asn1->offset;
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if (tvb_length_remaining(asn1->tvb, saved_offset) <= 0)
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{
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return TC_DS_FAIL;
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}
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if (!asn1_eoc(asn1, -1))
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{
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return TC_DS_FAIL;
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}
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ret = asn1_eoc_decode(asn1, -1);
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proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb,
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saved_offset, asn1->offset - saved_offset, "End of Contents");
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return TC_DS_OK;
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}
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static int
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dissect_tcap_tag(ASN1_SCK *asn1, proto_tree *tree, guint *tag, guchar * str)
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{
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guint saved_offset, real_tag;
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saved_offset = asn1->offset;
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asn1_id_decode1(asn1, &real_tag);
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if ((*tag != (guint) -1) && (real_tag != *tag))
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{
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asn1->offset = saved_offset;
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return TC_DS_FAIL;
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}
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proto_tree_add_uint_format(tree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset,
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real_tag, str);
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return TC_DS_OK;
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}
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static int
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dissect_tcap_octet(ASN1_SCK *asn1, proto_tree *tree, guchar * str)
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{
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guint saved_offset;
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guchar my_oct;
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saved_offset = asn1->offset;
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asn1_octet_decode(asn1, &my_oct);
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proto_tree_add_uint_format(tree, hf_tcap_id, asn1->tvb, saved_offset, asn1->offset - saved_offset,
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my_oct, "%s %d", str, my_oct);
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return TC_DS_OK;
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}
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static int
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dissect_tcap_integer(ASN1_SCK *asn1, proto_tree *tree, guint len, guchar * str)
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{
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guint saved_offset;
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gint32 invokeId;
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saved_offset = asn1->offset;
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asn1_int32_value_decode(asn1, len, &invokeId);
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proto_tree_add_int_format(tree, hf_tcap_int, asn1->tvb, saved_offset, asn1->offset - saved_offset,
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invokeId, "%s %d", str, invokeId);
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return TC_DS_OK;
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}
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static gboolean
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check_tcap_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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/* dissect tid */
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static int
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dissect_tcap_tid(ASN1_SCK *asn1, proto_tree *tcap_tree, proto_item *ti, int type)
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{
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guint saved_offset, org_offset = 0;
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guint len;
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guint tag;
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int ret;
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proto_item *tid_item;
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proto_tree *subtree;
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guchar *poctets;
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guint32 val;
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gboolean def_len;
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org_offset = asn1->offset;
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if ( ST_TID_SOURCE == type)
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{
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tid_item = proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb, asn1->offset, -1, "Source Transaction ID");
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subtree = proto_item_add_subtree(tid_item, ett_otid);
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}
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else
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{
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tid_item = proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb, asn1->offset, -1, "Destination Transaction ID");
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subtree = proto_item_add_subtree(tid_item, ett_dtid);
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}
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saved_offset = asn1->offset;
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ret = asn1_id_decode1(asn1, &tag);
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|
|
proto_tree_add_uint(subtree, hf_tcap_tid, asn1->tvb, saved_offset, asn1->offset - saved_offset, tag);
|
|
|
|
|
|
|
|
/* error handling */
|
|
|
|
switch(type)
|
|
|
|
{
|
|
|
|
case ST_TID_SOURCE:
|
|
|
|
if (ST_ITU_ORG_TID_TAG != tag)
|
|
|
|
{
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case ST_TID_DEST:
|
|
|
|
if (ST_ITU_DST_TID_TAG != tag)
|
|
|
|
{
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_string_value_decode(asn1, len, &poctets);
|
|
|
|
val = 0;
|
|
|
|
memcpy(&val, poctets, len);
|
|
|
|
|
|
|
|
ti = proto_tree_add_uint(subtree, hf_tcap_id, asn1->tvb, saved_offset, asn1->offset - saved_offset, val);
|
|
|
|
g_free(poctets);
|
|
|
|
|
|
|
|
proto_item_set_len(tid_item, asn1->offset - org_offset);
|
|
|
|
|
|
|
|
if (type == ST_TID_DEST)
|
|
|
|
{
|
|
|
|
if (check_col(g_pinfo->cinfo, COL_INFO))
|
|
|
|
col_append_fstr(g_pinfo->cinfo, COL_INFO, "dtid(%x) ", val);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (check_col(g_pinfo->cinfo, COL_INFO))
|
|
|
|
col_append_fstr(g_pinfo->cinfo, COL_INFO, "stid(%x) ", val);
|
|
|
|
}
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Samuel */
|
|
|
|
/* dissect operation portion */
|
|
|
|
static int
|
|
|
|
dissect_tcap_invokeId(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
#define INVOKE_ID_TAG 0x2
|
|
|
|
if (check_tcap_tag(asn1, INVOKE_ID_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Invoke ID Tag");
|
|
|
|
dissect_tcap_len(asn1, tree, &def_len, &len);
|
|
|
|
dissect_tcap_integer(asn1, tree, len, "Invoke ID:");
|
|
|
|
}
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_lnkId(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
#define LINK_ID_TAG 0x80
|
|
|
|
if (check_tcap_tag(asn1, LINK_ID_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Linked ID Tag");
|
|
|
|
dissect_tcap_len(asn1, tree, &def_len, &len);
|
|
|
|
dissect_tcap_integer(asn1, tree, len, "Linked ID:");
|
|
|
|
}
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_opr_code(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
gboolean got_it = FALSE;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
#define TCAP_LOC_OPR_CODE_TAG 0x02
|
|
|
|
if (check_tcap_tag(asn1, TCAP_LOC_OPR_CODE_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Local Operation Code Tag");
|
|
|
|
got_it = TRUE;
|
|
|
|
}
|
|
|
|
#define TCAP_GLB_OPR_CODE_TAG 0x06
|
|
|
|
else if (check_tcap_tag(asn1, TCAP_GLB_OPR_CODE_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Global Operation Code Tag");
|
|
|
|
got_it = TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (got_it)
|
|
|
|
{
|
|
|
|
dissect_tcap_len(asn1, tree, &def_len, &len);
|
|
|
|
|
|
|
|
proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb, asn1->offset, len, "Operation Code");
|
|
|
|
|
|
|
|
asn1->offset += len;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_param(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint off_tree[100], saved_offset, len_offset;
|
|
|
|
int num_seq;
|
|
|
|
guint tag, len;
|
|
|
|
gboolean def_len;
|
|
|
|
proto_item *item_tree[100], *item;
|
|
|
|
proto_tree *seq_tree[100], *use_tree, *subtree;
|
|
|
|
|
|
|
|
num_seq = 0;
|
|
|
|
use_tree = tree;
|
|
|
|
|
|
|
|
#define TC_INVALID_TAG 0
|
|
|
|
while ((tvb_length_remaining(asn1->tvb, asn1->offset) > 0) &&
|
|
|
|
(!check_tcap_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 == TC_SEQ_TAG)
|
|
|
|
{
|
|
|
|
item =
|
|
|
|
proto_tree_add_none_format(use_tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "Sequence");
|
|
|
|
|
|
|
|
subtree = proto_item_add_subtree(item, ett_params);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, len_offset - saved_offset, tag, "Sequence Tag");
|
|
|
|
|
|
|
|
if (!def_len)
|
|
|
|
{
|
|
|
|
proto_tree_add_none_format(subtree, hf_tcap_none, 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_tcap_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_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, len_offset - saved_offset, tag, "Parameter Tag");
|
|
|
|
proto_tree_add_none_format(use_tree, hf_tcap_none, 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_none_format(use_tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "Parameter");
|
|
|
|
|
|
|
|
subtree = proto_item_add_subtree(item, ett_param);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, len_offset - saved_offset, tag, "Parameter Tag");
|
|
|
|
|
|
|
|
proto_tree_add_uint(subtree, hf_tcap_length, asn1->tvb,
|
|
|
|
len_offset, asn1->offset - len_offset, len);
|
|
|
|
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
|
|
|
|
|
|
proto_tree_add_none_format(subtree, hf_tcap_none, 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_none_format(seq_tree[num_seq-1], hf_tcap_none, 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 TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static proto_tree *
|
|
|
|
dissect_tcap_component(ASN1_SCK *asn1, proto_tree *tree, guint *len_p)
|
|
|
|
{
|
|
|
|
guint saved_offset;
|
|
|
|
guint tag;
|
|
|
|
proto_item *item;
|
|
|
|
proto_tree *subtree;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
item =
|
|
|
|
proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "Component ID");
|
|
|
|
|
|
|
|
subtree = proto_item_add_subtree(item, ett_component);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"Component ID Identifier");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, len_p);
|
|
|
|
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + *len_p);
|
|
|
|
|
|
|
|
return(subtree);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_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_none_format(tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "Problem Code");
|
|
|
|
|
|
|
|
subtree = proto_item_add_subtree(item, ett_problem);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
|
|
|
|
|
|
if (len != 1)
|
|
|
|
{
|
|
|
|
proto_tree_add_none_format(subtree, hf_tcap_none, 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 0x80:
|
|
|
|
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 0x81:
|
|
|
|
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 0x82:
|
|
|
|
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 0x83:
|
|
|
|
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_tcap_tag, asn1->tvb,
|
|
|
|
orig_offset, tag_len, tag, type_str);
|
|
|
|
|
|
|
|
proto_tree_add_none_format(subtree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, 1, "Problem Specifier %s", str);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_ansi_opr_code(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
gboolean got_it = FALSE;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
#define TCAP_NAT_OPR_CODE_TAG 0xd0
|
|
|
|
if (check_tcap_tag(asn1, TCAP_NAT_OPR_CODE_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "National TCAP Operation Code Identifier");
|
|
|
|
got_it = TRUE;
|
|
|
|
}
|
|
|
|
#define TCAP_PRIV_OPR_CODE_TAG 0xd1
|
|
|
|
else if (check_tcap_tag(asn1, TCAP_PRIV_OPR_CODE_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Private TCAP Operation Code Identifier");
|
|
|
|
got_it = TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (got_it)
|
|
|
|
{
|
|
|
|
dissect_tcap_len(asn1, tree, &def_len, &len);
|
|
|
|
|
|
|
|
proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb, asn1->offset, len, "Operation Code");
|
|
|
|
|
|
|
|
asn1->offset += len;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_ansi_problem(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
proto_tree *subtree;
|
|
|
|
proto_item *item = NULL;
|
|
|
|
gchar *str = NULL;
|
|
|
|
gchar *type_str = NULL;
|
|
|
|
gint32 type, spec;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
|
|
|
|
#define TCAP_PROB_CODE_TAG 0xd5
|
|
|
|
if (check_tcap_tag(asn1, TCAP_PROB_CODE_TAG))
|
|
|
|
{
|
|
|
|
str = "Problem Code Identifier";
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* XXX */
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
item =
|
|
|
|
proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "Problem Code");
|
|
|
|
|
|
|
|
subtree = proto_item_add_subtree(item, ett_problem);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, tag, str);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
|
|
|
|
|
|
if (len != 2)
|
|
|
|
{
|
|
|
|
proto_tree_add_none_format(subtree, hf_tcap_none, asn1->tvb,
|
|
|
|
asn1->offset, len, "Unknown encoding of Problem Code");
|
|
|
|
|
|
|
|
asn1->offset += len;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
asn1_int32_value_decode(asn1, 1, &type);
|
|
|
|
asn1_int32_value_decode(asn1, 1, &spec);
|
|
|
|
|
|
|
|
switch (type)
|
|
|
|
{
|
|
|
|
case 0: type_str = "Not used"; break;
|
|
|
|
|
|
|
|
case 1:
|
|
|
|
type_str = "General";
|
|
|
|
switch (spec)
|
|
|
|
{
|
|
|
|
case 1: str = "Unrecognized Component Type"; break;
|
|
|
|
case 2: str = "Incorrect Component Portion"; break;
|
|
|
|
case 3: str = "Badly Structured Component Portion"; break;
|
|
|
|
default:
|
|
|
|
str = "Undefined";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 2:
|
|
|
|
type_str = "Invoke";
|
|
|
|
switch (spec)
|
|
|
|
{
|
|
|
|
case 1: str = "Duplicate Invoke ID"; break;
|
|
|
|
case 2: str = "Unrecognized Operation Code"; break;
|
|
|
|
case 3: str = "Incorrect Parameter"; break;
|
|
|
|
case 4: str = "Unrecognized Correlation ID"; break;
|
|
|
|
default:
|
|
|
|
str = "Undefined";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 3:
|
|
|
|
type_str = "Return Result";
|
|
|
|
switch (spec)
|
|
|
|
{
|
|
|
|
case 1: str = "Unrecognized Correlation ID"; break;
|
|
|
|
case 2: str = "Unexpected Return Result"; break;
|
|
|
|
case 3: str = "Incorrect Parameter"; break;
|
|
|
|
default:
|
|
|
|
str = "Undefined";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 4:
|
|
|
|
type_str = "Return Error";
|
|
|
|
switch (spec)
|
|
|
|
{
|
|
|
|
case 1: str = "Unrecognized Correlation ID"; break;
|
|
|
|
case 2: str = "Unexpected Return Error"; break;
|
|
|
|
case 3: str = "Unrecognized Error"; break;
|
|
|
|
case 4: str = "Unexpected Error"; break;
|
|
|
|
case 5: str = "Incorrect Parameter"; break;
|
|
|
|
default:
|
|
|
|
str = "Undefined";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 5:
|
|
|
|
type_str = "Transaction Portion";
|
|
|
|
switch (spec)
|
|
|
|
{
|
|
|
|
case 1: str = "Unrecognized Package Type"; break;
|
|
|
|
case 2: str = "Incorrect Transaction Portion"; break;
|
|
|
|
case 3: str = "Badly Structured Transaction Portion"; break;
|
|
|
|
case 4: str = "Unrecognized Transaction ID"; break;
|
|
|
|
case 5: str = "Permission to Release"; break;
|
|
|
|
case 6: str = "Resource Unavailable"; break;
|
|
|
|
default:
|
|
|
|
str = "Undefined";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
type_str = "Undefined";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (spec == 255) { str = "Reserved"; }
|
|
|
|
else if (spec == 0) { str = "Not used"; }
|
|
|
|
|
|
|
|
proto_tree_add_none_format(subtree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, 1, "Problem Type %s", type_str);
|
|
|
|
|
|
|
|
proto_tree_add_none_format(subtree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset + 1, 1, "Problem Specifier %s", str);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_ansi_error(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
proto_tree *subtree;
|
|
|
|
proto_item *item = NULL;
|
|
|
|
gchar *str = NULL;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
|
|
|
|
#define TCAP_NAT_ERR_CODE_TAG 0xd3
|
|
|
|
if (check_tcap_tag(asn1, TCAP_NAT_ERR_CODE_TAG))
|
|
|
|
{
|
|
|
|
str = "National TCAP Error Code Identifier";
|
|
|
|
}
|
|
|
|
#define TCAP_PRIV_ERR_CODE_TAG 0xd4
|
|
|
|
else if (check_tcap_tag(asn1, TCAP_PRIV_ERR_CODE_TAG))
|
|
|
|
{
|
|
|
|
str = "Private TCAP Error Code Identifier";
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* XXX */
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
item =
|
|
|
|
proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "TCAP Error Code");
|
|
|
|
|
|
|
|
subtree = proto_item_add_subtree(item, ett_error);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, tag, str);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
|
|
|
|
|
|
proto_tree_add_none_format(subtree, hf_tcap_none, asn1->tvb,
|
|
|
|
asn1->offset, len, "Error Code");
|
|
|
|
|
|
|
|
asn1->offset += len;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_ansi_param(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
gboolean got_it = FALSE;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
#define TCAP_PARAM_SET_TAG 0xf2
|
|
|
|
if (check_tcap_tag(asn1, TCAP_PARAM_SET_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Parameter Set Identifier");
|
|
|
|
got_it = TRUE;
|
|
|
|
}
|
|
|
|
#define TCAP_PARAM_SEQ_TAG 0x30
|
|
|
|
else if (check_tcap_tag(asn1, TCAP_PARAM_SEQ_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Parameter Sequence Identifier");
|
|
|
|
got_it = TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (got_it)
|
|
|
|
{
|
|
|
|
dissect_tcap_len(asn1, tree, &def_len, &len);
|
|
|
|
|
|
|
|
proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb, asn1->offset, len, "Parameter Data");
|
|
|
|
|
|
|
|
asn1->offset += len;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_ansi_tcap_reject(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint len;
|
|
|
|
proto_tree *subtree;
|
|
|
|
|
|
|
|
#define COMPONENT_ID_TAG 0xcf
|
|
|
|
if (check_tcap_tag(asn1, COMPONENT_ID_TAG))
|
|
|
|
{
|
|
|
|
subtree = dissect_tcap_component(asn1, tree, &len);
|
|
|
|
|
|
|
|
switch (len)
|
|
|
|
{
|
|
|
|
case 1:
|
|
|
|
dissect_tcap_octet(asn1, subtree, "Correlation ID:");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
dissect_ansi_problem(asn1, tree);
|
|
|
|
|
|
|
|
dissect_ansi_param(asn1, tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_ansi_tcap_re(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint len;
|
|
|
|
proto_tree *subtree;
|
|
|
|
|
|
|
|
#define COMPONENT_ID_TAG 0xcf
|
|
|
|
if (check_tcap_tag(asn1, COMPONENT_ID_TAG))
|
|
|
|
{
|
|
|
|
subtree = dissect_tcap_component(asn1, tree, &len);
|
|
|
|
|
|
|
|
switch (len)
|
|
|
|
{
|
|
|
|
case 1:
|
|
|
|
dissect_tcap_octet(asn1, tree, "Correlation ID:");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
dissect_ansi_error(asn1, tree);
|
|
|
|
|
|
|
|
dissect_ansi_param(asn1, tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_ansi_tcap_rr(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint len;
|
|
|
|
proto_tree *subtree;
|
|
|
|
|
|
|
|
#define COMPONENT_ID_TAG 0xcf
|
|
|
|
if (check_tcap_tag(asn1, COMPONENT_ID_TAG))
|
|
|
|
{
|
|
|
|
subtree = dissect_tcap_component(asn1, tree, &len);
|
|
|
|
|
|
|
|
switch (len)
|
|
|
|
{
|
|
|
|
case 1:
|
|
|
|
dissect_tcap_octet(asn1, tree, "Correlation ID:");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
dissect_ansi_param(asn1, tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_ansi_tcap_invoke(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint len;
|
|
|
|
proto_tree *subtree;
|
|
|
|
|
|
|
|
#define COMPONENT_ID_TAG 0xcf
|
|
|
|
if (check_tcap_tag(asn1, COMPONENT_ID_TAG))
|
|
|
|
{
|
|
|
|
subtree = dissect_tcap_component(asn1, tree, &len);
|
|
|
|
|
|
|
|
switch (len)
|
|
|
|
{
|
|
|
|
case 1:
|
|
|
|
dissect_tcap_octet(asn1, tree, "Invoke ID:");
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 2:
|
|
|
|
dissect_tcap_octet(asn1, tree, "Invoke ID:");
|
|
|
|
dissect_tcap_octet(asn1, tree, "Correlation ID:");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
dissect_ansi_opr_code(asn1, tree);
|
|
|
|
|
|
|
|
dissect_ansi_param(asn1, tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_invoke(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *item;
|
|
|
|
guint start = asn1->offset;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
item = proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Components");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_component);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
2003-10-16 18:15:54 +00:00
|
|
|
tag, "Invoke Type Tag");
|
2003-10-02 06:13:29 +00:00
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
|
|
|
|
if (def_len)
|
|
|
|
{
|
|
|
|
proto_item_set_len(item, (asn1->offset - start) + len);
|
|
|
|
}
|
|
|
|
|
|
|
|
dissect_tcap_invokeId(asn1, subtree);
|
|
|
|
|
|
|
|
dissect_tcap_lnkId(asn1, subtree);
|
|
|
|
|
|
|
|
dissect_tcap_opr_code(asn1, subtree);
|
|
|
|
|
|
|
|
dissect_tcap_param(asn1, subtree);
|
|
|
|
|
|
|
|
if (!def_len)
|
|
|
|
{
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_rr(ASN1_SCK *asn1, proto_tree *tree, gchar *str)
|
|
|
|
{
|
|
|
|
guint tag, len, comp_len;
|
|
|
|
guint saved_offset;
|
|
|
|
proto_item *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_none_format(tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Components");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_component);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
|
|
|
tag, str);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &comp_def_len, &comp_len);
|
|
|
|
|
|
|
|
if (comp_def_len)
|
|
|
|
{
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + comp_len);
|
|
|
|
}
|
|
|
|
|
|
|
|
dissect_tcap_invokeId(asn1, subtree);
|
|
|
|
|
|
|
|
tag = TC_SEQ_TAG;
|
|
|
|
if (check_tcap_tag(asn1, TC_SEQ_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, subtree, &tag, "Sequence Tag");
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
}
|
|
|
|
|
|
|
|
dissect_tcap_opr_code(asn1, subtree);
|
|
|
|
|
|
|
|
dissect_tcap_param(asn1, subtree);
|
|
|
|
|
|
|
|
if (!comp_def_len)
|
|
|
|
{
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_re(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint tag, len, comp_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_none_format(tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Components");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_component);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
|
|
|
tag, "Return Error Type Tag");
|
|
|
|
|
|
|
|
dissect_tcap_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_tcap_invokeId(asn1, subtree);
|
|
|
|
|
|
|
|
#define TC_LOCAL_ERR_CODE_TAG 0x2
|
|
|
|
#define TC_GBL_ERR_CODE_TAG 0x6
|
|
|
|
if (check_tcap_tag(asn1, TC_LOCAL_ERR_CODE_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, subtree, &tag, "Local Error Code Tag");
|
|
|
|
}
|
|
|
|
else if (check_tcap_tag(asn1, TC_GBL_ERR_CODE_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, subtree, &tag, "Global Error Code Tag");
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
proto_tree_add_none_format(subtree, hf_tcap_none, asn1->tvb, asn1->offset, comp_len,
|
|
|
|
"Unknown Error Code");
|
|
|
|
|
|
|
|
asn1->offset += (comp_len - (asn1->offset - saved_offset));
|
|
|
|
return(TC_DS_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
dissect_tcap_integer(asn1, subtree, len, "Error Code:");
|
|
|
|
|
|
|
|
dissect_tcap_param(asn1, subtree);
|
|
|
|
|
|
|
|
if (!def_len)
|
|
|
|
{
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
|
|
|
|
return(TC_DS_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_reject(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint tag, comp_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_none_format(tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Components");
|
|
|
|
|
|
|
|
subtree = proto_item_add_subtree(item, ett_component);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
|
|
|
tag, "Reject Type Tag");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &comp_len);
|
|
|
|
|
|
|
|
if (def_len)
|
|
|
|
{
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + comp_len);
|
|
|
|
}
|
|
|
|
|
|
|
|
dissect_tcap_invokeId(asn1, subtree);
|
|
|
|
|
|
|
|
dissect_tcap_problem(asn1, tree);
|
|
|
|
|
|
|
|
if (!def_len)
|
|
|
|
{
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_ansi_tcap_next_tvb(ASN1_SCK *asn1, guint len, proto_tree *tree)
|
|
|
|
{
|
|
|
|
tvbuff_t *next_tvb;
|
|
|
|
guint saved_offset;
|
|
|
|
int ret;
|
|
|
|
gboolean flag = TRUE;
|
|
|
|
guint tag;
|
|
|
|
proto_item *item, *tag_item;
|
|
|
|
proto_tree *subtree, *tag_subtree;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
|
|
|
|
if (lock_info_col) col_set_fence(g_pinfo->cinfo, COL_INFO);
|
|
|
|
|
|
|
|
next_tvb = tvb_new_subset(asn1->tvb, asn1->offset, len, len);
|
|
|
|
|
|
|
|
/* process components data */
|
|
|
|
if (!dissector_try_port(tcap_ansi_ssn_dissector_table, g_pinfo->match_port, next_tvb, g_pinfo, g_tcap_tree))
|
|
|
|
{
|
|
|
|
/* dissect cmp */
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* verify tag type is known
|
|
|
|
*/
|
|
|
|
switch (tag)
|
|
|
|
{
|
|
|
|
case ANSI_TC_INVOKE_L :
|
|
|
|
case ANSI_TC_RRL :
|
|
|
|
case ANSI_TC_RE :
|
|
|
|
case ANSI_TC_REJECT :
|
|
|
|
case ANSI_TC_INVOKE_N :
|
|
|
|
case ANSI_TC_RRN :
|
|
|
|
flag = TRUE;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
flag = FALSE;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (flag != FALSE)
|
|
|
|
{
|
|
|
|
item = proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Components");
|
|
|
|
subtree = proto_item_add_subtree(item, ett_component);
|
|
|
|
|
|
|
|
switch (tag)
|
|
|
|
{
|
|
|
|
case ANSI_TC_INVOKE_L :
|
|
|
|
tag_item = proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset,
|
|
|
|
asn1->offset - saved_offset, tag, "Invoke(Last)");
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
tag_subtree = proto_item_add_subtree(tag_item, ett_component);
|
|
|
|
|
|
|
|
dissect_ansi_tcap_invoke(asn1, tag_subtree);
|
|
|
|
break;
|
|
|
|
case ANSI_TC_RRL :
|
|
|
|
tag_item = proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset,
|
|
|
|
asn1->offset - saved_offset, tag, "Return Result(Last)");
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
tag_subtree = proto_item_add_subtree(tag_item, ett_component);
|
|
|
|
|
|
|
|
dissect_ansi_tcap_rr(asn1, tag_subtree);
|
|
|
|
break;
|
|
|
|
case ANSI_TC_RE :
|
|
|
|
tag_item = proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset,
|
|
|
|
asn1->offset - saved_offset, tag, "Return Error");
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
tag_subtree = proto_item_add_subtree(tag_item, ett_component);
|
|
|
|
|
|
|
|
dissect_ansi_tcap_re(asn1, tag_subtree);
|
|
|
|
break;
|
|
|
|
case ANSI_TC_REJECT :
|
|
|
|
tag_item = proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset,
|
|
|
|
asn1->offset - saved_offset, tag, "Reject");
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
tag_subtree = proto_item_add_subtree(tag_item, ett_component);
|
|
|
|
|
|
|
|
dissect_ansi_tcap_reject(asn1, tag_subtree);
|
|
|
|
break;
|
|
|
|
case ANSI_TC_INVOKE_N :
|
|
|
|
tag_item = proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset,
|
|
|
|
asn1->offset - saved_offset, tag, "Invoke(Not Last)");
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
tag_subtree = proto_item_add_subtree(tag_item, ett_component);
|
|
|
|
|
|
|
|
dissect_ansi_tcap_invoke(asn1, tag_subtree);
|
|
|
|
break;
|
|
|
|
case ANSI_TC_RRN :
|
|
|
|
tag_item = proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset,
|
|
|
|
asn1->offset - saved_offset, tag, "Return Result(Not Last)");
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
tag_subtree = proto_item_add_subtree(tag_item, ett_component);
|
|
|
|
|
|
|
|
dissect_ansi_tcap_rr(asn1, tag_subtree);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_item_set_len(item, asn1->offset - saved_offset);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!flag)
|
|
|
|
{
|
|
|
|
/* No sub-dissection occured, treat it as raw data */
|
|
|
|
call_dissector(data_handle, next_tvb, g_pinfo, g_tcap_tree);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_next_tvb(ASN1_SCK *asn1, guint len, proto_tree *tree)
|
|
|
|
{
|
|
|
|
tvbuff_t *next_tvb;
|
|
|
|
guint saved_offset;
|
|
|
|
int ret;
|
|
|
|
guint tag;
|
|
|
|
|
|
|
|
if (lock_info_col) col_set_fence(g_pinfo->cinfo, COL_INFO);
|
|
|
|
|
|
|
|
next_tvb = tvb_new_subset(asn1->tvb, asn1->offset, len, len);
|
|
|
|
|
|
|
|
/* process components data */
|
|
|
|
if (dissector_try_port(tcap_itu_ssn_dissector_table, g_pinfo->match_port, next_tvb, g_pinfo, g_tcap_tree))
|
|
|
|
{
|
|
|
|
asn1->offset += len;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
|
|
|
|
switch (tag)
|
|
|
|
{
|
|
|
|
case TC_INVOKE :
|
|
|
|
dissect_tcap_invoke(asn1, tree);
|
|
|
|
break;
|
|
|
|
case TC_RRL :
|
|
|
|
dissect_tcap_rr(asn1, tree, "Return Result(Last) Type Tag");
|
|
|
|
break;
|
|
|
|
case TC_RE :
|
|
|
|
dissect_tcap_re(asn1, tree);
|
|
|
|
break;
|
|
|
|
case TC_REJECT :
|
|
|
|
dissect_tcap_reject(asn1, tree);
|
|
|
|
break;
|
|
|
|
case TC_RRN :
|
|
|
|
/* same definition as RRL */
|
|
|
|
dissect_tcap_rr(asn1, tree, "Return Result(Not Last) Type Tag");
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* treat it as raw data */
|
|
|
|
call_dissector(data_handle, next_tvb, g_pinfo, g_tcap_tree);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_components(ASN1_SCK *asn1, proto_tree *tcap_tree)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len, next_tvb_len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *cmp_item;
|
|
|
|
guint cmp_start = asn1->offset;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
if (tvb_length_remaining(asn1->tvb, asn1->offset) <= 0)
|
|
|
|
{
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
if (ST_ITU_CMP_TAG != tag)
|
|
|
|
{
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
cmp_item = proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Components Portion");
|
|
|
|
subtree = proto_item_add_subtree(cmp_item, ett_cmp_portion);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"Component Portion Tag");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
|
|
|
|
if (def_len)
|
|
|
|
{
|
|
|
|
proto_item_set_len(cmp_item, (asn1->offset - cmp_start) + len);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* call next dissector */
|
|
|
|
|
|
|
|
if (!def_len)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* take remaining length minus the EOC for the indefinite
|
|
|
|
* component length
|
|
|
|
*/
|
|
|
|
next_tvb_len =
|
|
|
|
tvb_length_remaining(asn1->tvb, asn1->offset) - TC_EOC_LEN;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
next_tvb_len = len;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* take length minus the EOC for the indefinite
|
|
|
|
* transaction message length
|
|
|
|
*/
|
|
|
|
next_tvb_len -= g_tcap_ends_def_len ? 0 : TC_EOC_LEN;
|
|
|
|
|
|
|
|
dissect_tcap_next_tvb(asn1, next_tvb_len, subtree);
|
|
|
|
|
|
|
|
if (!def_len)
|
|
|
|
{
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_item_set_len(cmp_item, asn1->offset - cmp_start);
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* dissect dialog portion */
|
|
|
|
static int
|
|
|
|
dissect_tcap_dlg_protocol_version(ASN1_SCK *asn1, proto_tree *tcap_tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
#define TC_DLG_PROTO_VER_TAG 0x80
|
|
|
|
if (check_tcap_tag(asn1, TC_DLG_PROTO_VER_TAG))
|
|
|
|
{
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
proto_tree_add_uint_format(tcap_tree, hf_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"Protocol Version Tag: 0x%x", tag);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tcap_tree, &def_len, &len);
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ti =
|
|
|
|
proto_tree_add_bytes(tcap_tree, hf_tcap_bytes, asn1->tvb, saved_offset, len,
|
|
|
|
(guchar*)(tvb_get_ptr(asn1->tvb, saved_offset, len)));
|
|
|
|
asn1->offset += len;
|
|
|
|
}
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_dlg_application_context_name(ASN1_SCK *asn1, proto_tree *tcap_tree)
|
|
|
|
{
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint name_len, len, len2;
|
|
|
|
guint tag;
|
|
|
|
subid_t *oid;
|
|
|
|
int ret;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
proto_tree_add_uint_format(tcap_tree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"Application Context Name Tag: 0x%x", tag);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tcap_tree, &def_len, &name_len);
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_oid_decode (asn1, &oid, &len, &len2);
|
|
|
|
proto_tree_add_bytes(tcap_tree, hf_tcap_app_con_name, asn1->tvb, saved_offset, len2, tvb_get_ptr(asn1->tvb, saved_offset, len2));
|
|
|
|
if (ret == ASN1_ERR_NOERROR) g_free(oid);
|
|
|
|
|
|
|
|
if (!def_len)
|
|
|
|
{
|
|
|
|
/* for Application Context Name Tag */
|
|
|
|
dissect_tcap_eoc(asn1, tcap_tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_dlg_result(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint tag, rtag_len, itag_len;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
gint32 value;
|
|
|
|
gchar *str;
|
|
|
|
gboolean def_len;
|
|
|
|
gboolean rtag_def_len;
|
|
|
|
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Result Tag");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tree, &rtag_def_len, &rtag_len);
|
|
|
|
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Integer Tag");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tree, &def_len, &itag_len);
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
asn1_int32_value_decode(asn1, itag_len, &value);
|
|
|
|
|
|
|
|
switch (value)
|
|
|
|
{
|
|
|
|
case 0x00: str = "Accepted"; break;
|
|
|
|
case 0x01: str = "Reject-permanent"; break;
|
|
|
|
default: str = "Unknown value"; break;
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_tree_add_int_format(tree, hf_tcap_int, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
|
|
|
value, "%s %d", str, value);
|
|
|
|
|
|
|
|
if (!rtag_def_len)
|
|
|
|
{
|
|
|
|
/* for Result Tag */
|
|
|
|
dissect_tcap_eoc(asn1, tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_dlg_result_src_diag(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len, tag;
|
|
|
|
gint32 value;
|
|
|
|
gboolean user;
|
|
|
|
gchar *str;
|
|
|
|
gboolean def_len;
|
|
|
|
gboolean serv_def_len;
|
|
|
|
gboolean diag_def_len;
|
|
|
|
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Result Source Diagnostic Tag");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tree, &diag_def_len, &len);
|
|
|
|
|
|
|
|
#define TC_DIAG_SERV_USER_TAG 0xa1
|
|
|
|
#define TC_DIAG_SERV_PROV_TAG 0xa2
|
|
|
|
if (check_tcap_tag(asn1, TC_DIAG_SERV_USER_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Dialogue Service User Tag");
|
|
|
|
user = TRUE;
|
|
|
|
}
|
|
|
|
else if (check_tcap_tag(asn1, TC_DIAG_SERV_PROV_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Dialogue Service Provider Tag");
|
|
|
|
user = FALSE;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb, asn1->offset, len,
|
|
|
|
"Unknown Result Source Diagnostic");
|
|
|
|
|
|
|
|
asn1->offset += len;
|
|
|
|
return(TC_DS_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tree, &serv_def_len, &len);
|
|
|
|
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "Integer Tag");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tree, &def_len, &len);
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
asn1_int32_value_decode(asn1, len, &value);
|
|
|
|
|
|
|
|
if (user)
|
|
|
|
{
|
|
|
|
switch (value)
|
|
|
|
{
|
|
|
|
case 0x00: str = "Null"; break;
|
|
|
|
case 0x01: str = "No reason given"; break;
|
|
|
|
case 0x02: str = "Application Context Name not supplied"; break;
|
|
|
|
default: str = "Unknown value"; break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
switch (value)
|
|
|
|
{
|
|
|
|
case 0x00: str = "Null"; break;
|
|
|
|
case 0x01: str = "No reason given"; break;
|
|
|
|
case 0x02: str = "No common dialogue portion"; break;
|
|
|
|
default: str = "Unknown value"; break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_tree_add_int_format(tree, hf_tcap_int, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
|
|
|
value, "%s %d", str, value);
|
|
|
|
|
|
|
|
if (!serv_def_len)
|
|
|
|
{
|
|
|
|
/* for Dialogue Service User/Provider Tag */
|
|
|
|
dissect_tcap_eoc(asn1, tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!diag_def_len)
|
|
|
|
{
|
|
|
|
/* for Result Source Diagnostic Tag */
|
|
|
|
dissect_tcap_eoc(asn1, tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_dlg_user_info(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
2003-10-16 18:15:54 +00:00
|
|
|
guint tag, len;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
gboolean def_len;
|
|
|
|
gboolean user_info_def_len;
|
2003-10-02 06:13:29 +00:00
|
|
|
|
|
|
|
#define TC_USR_INFO_TAG 0xbe
|
2003-10-16 18:15:54 +00:00
|
|
|
if (check_tcap_tag(asn1, TC_USR_INFO_TAG))
|
|
|
|
{
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, tree, &tag, "User Info Tag");
|
|
|
|
dissect_tcap_len(asn1, tree, &user_info_def_len, &len);
|
2003-10-02 06:13:29 +00:00
|
|
|
|
|
|
|
#define TC_EXT_TAG 0x28
|
2003-10-16 18:15:54 +00:00
|
|
|
if (check_tcap_tag(asn1, TC_EXT_TAG))
|
|
|
|
{
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
asn1_id_decode1(asn1, &tag);
|
|
|
|
proto_tree_add_uint_format(tree, hf_tcap_length, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
|
|
|
tag, "External Tag: 0x%x", tag);
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-10-16 18:15:54 +00:00
|
|
|
dissect_tcap_len(asn1, tree, &def_len, &len);
|
|
|
|
}
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-10-16 18:15:54 +00:00
|
|
|
proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb, asn1->offset, len, "Parameter Data");
|
|
|
|
asn1->offset += len;
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-10-16 18:15:54 +00:00
|
|
|
if (!user_info_def_len)
|
|
|
|
{
|
|
|
|
/* for User Information Tag */
|
|
|
|
dissect_tcap_eoc(asn1, tree);
|
2003-10-02 06:13:29 +00:00
|
|
|
}
|
2003-10-16 18:15:54 +00:00
|
|
|
}
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-10-16 18:15:54 +00:00
|
|
|
return TC_DS_OK;
|
2003-10-02 06:13:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_dlg_req(ASN1_SCK *asn1, proto_tree *tcap_tree)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *req_item;
|
|
|
|
guint req_start = asn1->offset;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
/* dissect dialog portion */
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
req_item = proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Dialogue Request");
|
|
|
|
subtree = proto_item_add_subtree(req_item, ett_dlg_req);
|
|
|
|
proto_tree_add_uint(subtree, hf_tcap_dlg_type, asn1->tvb, saved_offset, asn1->offset - saved_offset, tag);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
|
|
|
|
dissect_tcap_dlg_protocol_version(asn1, subtree, NULL);
|
|
|
|
|
|
|
|
dissect_tcap_dlg_application_context_name(asn1, subtree);
|
|
|
|
|
|
|
|
dissect_tcap_dlg_user_info(asn1, subtree);
|
|
|
|
|
|
|
|
/* decode end of sequence */
|
|
|
|
|
|
|
|
if (!def_len)
|
|
|
|
{
|
|
|
|
/* for Dialogue Request Tag */
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_item_set_len(req_item, asn1->offset - req_start);
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_dlg_rsp(ASN1_SCK *asn1, proto_tree *tcap_tree)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *req_item;
|
|
|
|
guint req_start = asn1->offset;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
/* dissect dialog portion */
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
req_item = proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Dialogue Response");
|
|
|
|
subtree = proto_item_add_subtree(req_item, ett_dlg_rsp);
|
|
|
|
proto_tree_add_uint(subtree, hf_tcap_dlg_type, asn1->tvb, saved_offset, asn1->offset - saved_offset, tag);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
|
|
|
|
dissect_tcap_dlg_protocol_version(asn1, subtree, NULL);
|
|
|
|
|
|
|
|
dissect_tcap_dlg_application_context_name(asn1, subtree);
|
|
|
|
|
|
|
|
/* result */
|
|
|
|
dissect_tcap_dlg_result(asn1, subtree);
|
|
|
|
|
|
|
|
/* result source diag */
|
|
|
|
dissect_tcap_dlg_result_src_diag(asn1, subtree);
|
|
|
|
|
|
|
|
dissect_tcap_dlg_user_info(asn1, subtree);
|
|
|
|
|
|
|
|
if (!def_len)
|
|
|
|
{
|
|
|
|
/* for Dialogue Response Tag */
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_item_set_len(req_item, asn1->offset - req_start);
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_dlg_abrt(ASN1_SCK *asn1, proto_tree *tree)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *req_item;
|
|
|
|
gint32 value;
|
|
|
|
gchar *str;
|
|
|
|
gboolean def_len, abort_def_len;
|
|
|
|
|
|
|
|
/* dissect dialog pabort portion */
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
req_item = proto_tree_add_none_format(tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Dialogue Abort");
|
2003-11-14 01:35:08 +00:00
|
|
|
subtree = proto_item_add_subtree(req_item, ett_dlg_abort );
|
2003-10-02 06:13:29 +00:00
|
|
|
proto_tree_add_uint(subtree, hf_tcap_dlg_type, asn1->tvb, saved_offset, asn1->offset - saved_offset, tag);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &abort_def_len, &len);
|
|
|
|
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, subtree, &tag, "Abort Source Tag");
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
asn1_int32_value_decode(asn1, len, &value);
|
|
|
|
|
|
|
|
switch (value)
|
|
|
|
{
|
|
|
|
case 0x00: str = "Dialogue Service User"; break;
|
|
|
|
case 0x01: str = "Dialogue Service Provider"; break;
|
|
|
|
default: str = "Unknown value"; break;
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_tree_add_int_format(subtree, hf_tcap_int, asn1->tvb, saved_offset, asn1->offset - saved_offset,
|
|
|
|
value, "Abort Source: %s %d", str, value);
|
|
|
|
|
|
|
|
dissect_tcap_dlg_user_info(asn1, subtree);
|
|
|
|
|
|
|
|
if (!abort_def_len)
|
|
|
|
{
|
|
|
|
/* for Dialogue Abort Tag */
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_tcap_dialog_portion(ASN1_SCK *asn1, proto_tree *tcap_tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *dlg_item;
|
|
|
|
guint dlg_start = asn1->offset;
|
|
|
|
gboolean def_len, ext_tag_def_len, portion_def_len;
|
|
|
|
|
|
|
|
if (tvb_length_remaining(asn1->tvb, asn1->offset) <= 0)
|
|
|
|
{
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* dissect dialog portion */
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
/* error handling */
|
|
|
|
if (ST_ITU_DLG_TAG != tag)
|
|
|
|
{
|
2003-10-16 18:15:54 +00:00
|
|
|
asn1->offset = saved_offset;
|
|
|
|
return TC_DS_FAIL;
|
2003-10-02 06:13:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
dlg_item =
|
|
|
|
proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "Dialogue Portion");
|
|
|
|
|
|
|
|
subtree = proto_item_add_subtree(dlg_item, ett_dlg_portion);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, tag, "Dialogue Portion Tag");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &portion_def_len, &len);
|
|
|
|
|
|
|
|
if (portion_def_len)
|
|
|
|
{
|
|
|
|
proto_item_set_len(dlg_item, len);
|
|
|
|
}
|
|
|
|
|
|
|
|
ext_tag_def_len = FALSE;
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
#define TC_EXT_TAG 0x28
|
|
|
|
if (TC_EXT_TAG != tag)
|
|
|
|
{
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_length, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"External Tag: 0x%x", tag);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &ext_tag_def_len, &len);
|
|
|
|
}
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
#define TC_OID_TAG 0x06
|
|
|
|
if (TC_OID_TAG != tag)
|
|
|
|
{
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"Object Identifier Tag");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ti =
|
|
|
|
proto_tree_add_bytes(subtree, hf_tcap_bytes, asn1->tvb, saved_offset, len,
|
|
|
|
(guchar*)(tvb_get_ptr(asn1->tvb, saved_offset, len)));
|
|
|
|
|
|
|
|
asn1->offset += len;
|
|
|
|
}
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"Single-ASN.1-type Tag");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
|
|
|
|
proto_item_set_len(dlg_item, asn1->offset - dlg_start);
|
|
|
|
|
|
|
|
/* dialogue PDU */
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
|
|
|
|
switch(tag)
|
|
|
|
{
|
|
|
|
case TC_DLG_REQ:
|
|
|
|
dissect_tcap_dlg_req(asn1, subtree);
|
|
|
|
break;
|
|
|
|
case TC_DLG_RSP:
|
|
|
|
dissect_tcap_dlg_rsp(asn1, subtree);
|
|
|
|
break;
|
|
|
|
case TC_DLG_ABRT:
|
|
|
|
dissect_tcap_dlg_abrt(asn1, subtree);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* decode end of sequence */
|
|
|
|
|
|
|
|
if (!def_len)
|
|
|
|
{
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!ext_tag_def_len)
|
|
|
|
{
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!portion_def_len)
|
|
|
|
{
|
|
|
|
dissect_tcap_eoc(asn1, subtree);
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_item_set_len(dlg_item, asn1->offset - dlg_start);
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* dissect reason */
|
|
|
|
static int
|
|
|
|
dissect_tcap_abort_reason(ASN1_SCK *asn1, proto_tree *tcap_tree)
|
|
|
|
{
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint tag, len;
|
|
|
|
proto_tree *subtree;
|
|
|
|
proto_item *item;
|
|
|
|
gint32 value;
|
|
|
|
gchar *str = NULL;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
#define TC_PABRT_REASON_TAG 0x4a
|
|
|
|
tag = TC_PABRT_REASON_TAG;
|
|
|
|
if (check_tcap_tag(asn1, tag))
|
|
|
|
{
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
item =
|
|
|
|
proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "PAbort Cause");
|
|
|
|
|
|
|
|
subtree = proto_item_add_subtree(item, ett_reason);
|
|
|
|
|
|
|
|
tag = -1;
|
|
|
|
dissect_tcap_tag(asn1, subtree, &tag, "PAbort Cause Tag");
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
|
|
|
|
proto_item_set_len(item, (asn1->offset - saved_offset) + len);
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
asn1_int32_value_decode(asn1, len, &value);
|
|
|
|
|
|
|
|
switch (value)
|
|
|
|
{
|
|
|
|
case 0x00: str = "Unrecognized Message Type"; break;
|
|
|
|
case 0x01: str = "Unrecognized Transaction ID"; break;
|
|
|
|
case 0x02: str = "Badly Formatted Transaction Portion"; break;
|
|
|
|
case 0x03: str = "Incorrect Transaction Portion"; break;
|
|
|
|
case 0x04: str = "Resource Limitation"; break;
|
|
|
|
default:
|
|
|
|
str = "Undefined";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_tree_add_none_format(subtree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, "Cause Value %s (%d)",
|
|
|
|
str, value);
|
|
|
|
}
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* dissect each type of message */
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_unidirectional(ASN1_SCK *asn1, proto_tree *tcap_tree)
|
|
|
|
{
|
|
|
|
|
|
|
|
dissect_tcap_dialog_portion(asn1, tcap_tree, NULL);
|
|
|
|
|
|
|
|
dissect_tcap_components(asn1, tcap_tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_begin(ASN1_SCK *asn1, proto_tree *tcap_tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
|
|
|
|
dissect_tcap_tid(asn1, tcap_tree, ti, ST_TID_SOURCE);
|
|
|
|
|
|
|
|
dissect_tcap_dialog_portion(asn1, tcap_tree, NULL);
|
|
|
|
|
|
|
|
dissect_tcap_components(asn1, tcap_tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_continue(ASN1_SCK *asn1, proto_tree *tcap_tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
|
|
|
|
dissect_tcap_tid(asn1, tcap_tree, ti, ST_TID_SOURCE);
|
|
|
|
|
|
|
|
dissect_tcap_tid(asn1, tcap_tree, ti, ST_TID_DEST);
|
|
|
|
|
|
|
|
dissect_tcap_dialog_portion(asn1, tcap_tree, NULL);
|
|
|
|
|
|
|
|
dissect_tcap_components(asn1, tcap_tree);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_end(ASN1_SCK *asn1, proto_tree *tcap_tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
|
|
|
|
dissect_tcap_tid(asn1, tcap_tree, ti, ST_TID_DEST);
|
|
|
|
|
|
|
|
dissect_tcap_dialog_portion(asn1, tcap_tree, NULL);
|
|
|
|
|
|
|
|
dissect_tcap_components(asn1, tcap_tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_tcap_abort(ASN1_SCK *asn1, proto_tree *tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
|
|
|
|
dissect_tcap_tid(asn1, tree, ti, ST_TID_DEST);
|
|
|
|
|
|
|
|
dissect_tcap_abort_reason(asn1, tree);
|
|
|
|
|
|
|
|
dissect_tcap_dialog_portion(asn1, tree, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Samuel */
|
|
|
|
static void
|
|
|
|
dissect_tcap_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tcap_tree)
|
|
|
|
{
|
|
|
|
ASN1_SCK asn1;
|
|
|
|
guint msg_type_tag;
|
|
|
|
proto_item *ti;
|
|
|
|
guint offset = 0;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
gchar *str = NULL;
|
|
|
|
|
|
|
|
asn1_open(&asn1, tvb, offset);
|
|
|
|
|
|
|
|
asn1_id_decode1(&asn1, &msg_type_tag);
|
|
|
|
|
|
|
|
str = match_strval(msg_type_tag, msg_type_strings);
|
|
|
|
|
|
|
|
if (str == NULL)
|
|
|
|
{
|
|
|
|
proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1.tvb, offset, -1, "Unknown message type, ignoring");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
|
|
{
|
|
|
|
col_set_str(pinfo->cinfo, COL_INFO, str);
|
|
|
|
col_append_str(pinfo->cinfo, COL_INFO, " ");
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_tree_add_uint_hidden(tcap_tree, hf_tcap_ssn, asn1.tvb, offset,
|
2003-10-16 18:15:54 +00:00
|
|
|
0, pinfo->match_port); /* len -1 is unacceptable */
|
2003-10-02 06:13:29 +00:00
|
|
|
|
|
|
|
ti = proto_tree_add_uint(tcap_tree, hf_tcap_message_type, asn1.tvb, offset, asn1.offset - saved_offset,
|
|
|
|
msg_type_tag);
|
|
|
|
|
|
|
|
dissect_tcap_len(&asn1, tcap_tree, &g_tcap_ends_def_len, &len);
|
|
|
|
|
|
|
|
switch(msg_type_tag)
|
|
|
|
{
|
|
|
|
case ST_MSG_TYP_UNI:
|
|
|
|
dissect_tcap_unidirectional(&asn1, tcap_tree);
|
|
|
|
break;
|
|
|
|
case ST_MSG_TYP_BGN:
|
|
|
|
dissect_tcap_begin(&asn1, tcap_tree, ti);
|
|
|
|
break;
|
|
|
|
case ST_MSG_TYP_CNT:
|
|
|
|
dissect_tcap_continue(&asn1, tcap_tree, ti);
|
|
|
|
break;
|
|
|
|
case ST_MSG_TYP_END:
|
|
|
|
dissect_tcap_end(&asn1, tcap_tree, ti);
|
|
|
|
break;
|
|
|
|
case ST_MSG_TYP_PABT:
|
|
|
|
dissect_tcap_abort(&asn1, tcap_tree, ti);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1.tvb, offset, -1,
|
|
|
|
"Message type not handled, ignoring");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!g_tcap_ends_def_len)
|
|
|
|
{
|
|
|
|
dissect_tcap_eoc(&asn1, tcap_tree);
|
|
|
|
}
|
|
|
|
|
|
|
|
asn1_close(&asn1, &saved_offset);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_ansi_tcap_components(ASN1_SCK *asn1, proto_tree *tcap_tree)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *cmp_item;
|
|
|
|
guint cmp_start = asn1->offset;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
if (ST_ANSI_CMP_TAG != tag)
|
|
|
|
{
|
2003-10-16 18:15:54 +00:00
|
|
|
asn1->offset = saved_offset;
|
|
|
|
return TC_DS_FAIL;
|
2003-10-02 06:13:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
cmp_item = proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Components Portion");
|
|
|
|
|
|
|
|
subtree = proto_item_add_subtree(cmp_item, ett_cmp_portion);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"Component Sequence Identifier");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tcap_tree, &def_len, &len);
|
|
|
|
|
|
|
|
/* call next dissector */
|
|
|
|
|
|
|
|
dissect_ansi_tcap_next_tvb(asn1, len, subtree);
|
|
|
|
|
|
|
|
proto_item_set_len(cmp_item, asn1->offset - cmp_start);
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_ansi_tcap_unidirectional(ASN1_SCK *asn1, proto_tree *tcap_tree)
|
|
|
|
{
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *trans_item;
|
|
|
|
guint trans_start = asn1->offset;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
if (ST_ANSI_TID_TAG != tag)
|
|
|
|
{
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
trans_item = proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Transaction Portion");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tcap_tree, &def_len, &len);
|
|
|
|
|
|
|
|
if (len != 0)
|
|
|
|
{
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_item_set_len(trans_item, asn1->offset - trans_start);
|
|
|
|
|
|
|
|
dissect_ansi_tcap_components(asn1, tcap_tree);
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_ansi_tcap_qwp_qwop(ASN1_SCK *asn1, proto_tree *tcap_tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *trans_item;
|
|
|
|
guint trans_start = asn1->offset;
|
|
|
|
guchar *poctets;
|
|
|
|
guint32 val;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
if (ST_ANSI_TID_TAG != tag)
|
|
|
|
{
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
trans_item = proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Transaction Portion");
|
|
|
|
subtree = proto_item_add_subtree(trans_item, ett_dlg_portion);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"Originating Transaction ID Identifier");
|
|
|
|
|
2003-10-16 18:15:54 +00:00
|
|
|
dissect_tcap_len(asn1, tcap_tree, &def_len, &len);
|
|
|
|
|
2003-10-02 06:13:29 +00:00
|
|
|
if (len != 4)
|
|
|
|
{
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_string_value_decode(asn1, len, &poctets);
|
|
|
|
val = 0;
|
|
|
|
memcpy(&val, poctets, len);
|
|
|
|
ti = proto_tree_add_uint(subtree, hf_tcap_id, asn1->tvb, saved_offset, asn1->offset - saved_offset, val);
|
|
|
|
g_free(poctets);
|
|
|
|
|
|
|
|
if (check_col(g_pinfo->cinfo, COL_INFO))
|
|
|
|
col_append_fstr(g_pinfo->cinfo, COL_INFO, "otid(%x) ", val);
|
|
|
|
|
|
|
|
proto_item_set_len(trans_item, asn1->offset - trans_start);
|
|
|
|
|
|
|
|
dissect_ansi_tcap_components(asn1, tcap_tree);
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_ansi_tcap_abort(ASN1_SCK *asn1, proto_tree *tcap_tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *trans_item;
|
|
|
|
guint trans_start = asn1->offset;
|
|
|
|
guchar *poctets;
|
|
|
|
guint32 val;
|
2003-11-14 01:35:08 +00:00
|
|
|
gint32 value;
|
2003-10-02 06:13:29 +00:00
|
|
|
gboolean def_len;
|
2003-11-14 01:35:08 +00:00
|
|
|
gchar *str;
|
2003-10-02 06:13:29 +00:00
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
if (ST_ANSI_TID_TAG != tag)
|
|
|
|
{
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
2003-11-14 01:35:08 +00:00
|
|
|
trans_item =
|
|
|
|
proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "Transaction Portion");
|
|
|
|
|
2003-10-02 06:13:29 +00:00
|
|
|
subtree = proto_item_add_subtree(trans_item, ett_dlg_portion);
|
|
|
|
|
2003-11-14 01:35:08 +00:00
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, tag,
|
2003-10-02 06:13:29 +00:00
|
|
|
"Responding Transaction ID Identifier");
|
|
|
|
|
2003-11-14 01:35:08 +00:00
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
2003-10-02 06:13:29 +00:00
|
|
|
|
|
|
|
if (len != 4)
|
|
|
|
{
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_string_value_decode(asn1, len, &poctets);
|
2003-11-14 01:35:08 +00:00
|
|
|
|
2003-10-02 06:13:29 +00:00
|
|
|
val = 0;
|
|
|
|
memcpy(&val, poctets, len);
|
|
|
|
ti = proto_tree_add_uint(subtree, hf_tcap_id, asn1->tvb, saved_offset, asn1->offset - saved_offset, val);
|
|
|
|
g_free(poctets);
|
|
|
|
|
|
|
|
if (check_col(g_pinfo->cinfo, COL_INFO))
|
|
|
|
col_append_fstr(g_pinfo->cinfo, COL_INFO, "rtid(%x) ", val);
|
|
|
|
|
|
|
|
proto_item_set_len(trans_item, asn1->offset - trans_start);
|
|
|
|
|
2003-11-14 01:35:08 +00:00
|
|
|
if (tvb_length_remaining(asn1->tvb, asn1->offset) <= 0)
|
|
|
|
{
|
|
|
|
proto_tree_add_text(tcap_tree, asn1->tvb, asn1->offset, -1,
|
|
|
|
"!!! Missing Component Portion !!!");
|
|
|
|
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
2003-10-02 06:13:29 +00:00
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
#define ANSI_TC_PABRT_CAUSE_TAG 0xd7
|
|
|
|
if (tag == ANSI_TC_PABRT_CAUSE_TAG)
|
|
|
|
{
|
2003-11-14 01:35:08 +00:00
|
|
|
trans_item =
|
|
|
|
proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "P-Abort Portion");
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-11-14 01:35:08 +00:00
|
|
|
subtree = proto_item_add_subtree(trans_item, ett_dlg_abort);
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-11-14 01:35:08 +00:00
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
|
|
|
|
|
|
|
proto_item_set_len(trans_item, (asn1->offset - saved_offset) + len);
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
asn1_int32_value_decode(asn1, len, &value);
|
|
|
|
|
|
|
|
switch (value)
|
|
|
|
{
|
|
|
|
case 1: str = "Unrecognized Package Type"; break;
|
|
|
|
case 2: str = "Incorrect Transaction Portion"; break;
|
|
|
|
case 3: str = "Badly Structured Transaction Portion"; break;
|
|
|
|
case 4: str = "Unrecognized Transaction ID"; break;
|
|
|
|
case 5: str = "Permission to Release"; break;
|
|
|
|
case 6: str = "Resource Unavailable"; break;
|
|
|
|
default:
|
|
|
|
str = "Undefined";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_tree_add_text(subtree, asn1->tvb,
|
|
|
|
saved_offset, asn1->offset - saved_offset, "P-Abort Cause Value %s (%d)",
|
|
|
|
str, value);
|
2003-10-02 06:13:29 +00:00
|
|
|
}
|
|
|
|
#define ANSI_TC_UABRT_INFO_TAG 0xd8
|
|
|
|
else if (tag == ANSI_TC_UABRT_INFO_TAG)
|
|
|
|
{
|
2003-11-14 01:35:08 +00:00
|
|
|
trans_item =
|
|
|
|
proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb,
|
|
|
|
saved_offset, -1, "U-Abort Portion");
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-11-14 01:35:08 +00:00
|
|
|
subtree = proto_item_add_subtree(trans_item, ett_dlg_abort);
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, subtree, &def_len, &len);
|
2003-10-02 06:13:29 +00:00
|
|
|
if (len > 0)
|
|
|
|
{
|
2003-11-14 01:35:08 +00:00
|
|
|
dissect_tcap_integer(asn1, subtree, len, "User Abort Information:");
|
2003-10-02 06:13:29 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_ansi_tcap_rsp(ASN1_SCK *asn1, proto_tree *tcap_tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *trans_item;
|
|
|
|
guint trans_start = asn1->offset;
|
|
|
|
guchar *poctets;
|
|
|
|
guint32 val;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
if (ST_ANSI_TID_TAG != tag)
|
|
|
|
{
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
trans_item = proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Transaction Portion");
|
|
|
|
subtree = proto_item_add_subtree(trans_item, ett_dlg_portion);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"Responding Transaction ID Identifier");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tcap_tree, &def_len, &len);
|
|
|
|
|
|
|
|
if (len != 4)
|
|
|
|
{
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_string_value_decode(asn1, len, &poctets);
|
|
|
|
val = 0;
|
|
|
|
memcpy(&val, poctets, len);
|
|
|
|
ti = proto_tree_add_uint(subtree, hf_tcap_id, asn1->tvb, saved_offset, asn1->offset - saved_offset, val);
|
|
|
|
g_free(poctets);
|
|
|
|
|
|
|
|
if (check_col(g_pinfo->cinfo, COL_INFO))
|
|
|
|
col_append_fstr(g_pinfo->cinfo, COL_INFO, "rtid(%x) ", val);
|
|
|
|
|
|
|
|
proto_item_set_len(trans_item, asn1->offset - trans_start);
|
|
|
|
|
|
|
|
dissect_ansi_tcap_components(asn1, tcap_tree);
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_ansi_tcap_cwp_cwop(ASN1_SCK *asn1, proto_tree *tcap_tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
proto_tree *subtree;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
guint tag;
|
|
|
|
int ret;
|
|
|
|
proto_item *trans_item;
|
|
|
|
guint trans_start = asn1->offset;
|
|
|
|
guchar *poctets;
|
|
|
|
guint32 val;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_id_decode1(asn1, &tag);
|
|
|
|
|
|
|
|
if (ST_ANSI_TID_TAG != tag)
|
|
|
|
{
|
|
|
|
asn1->offset = saved_offset;
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
trans_item = proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1->tvb, saved_offset, -1, "Transaction Portion");
|
|
|
|
subtree = proto_item_add_subtree(trans_item, ett_dlg_portion);
|
|
|
|
|
|
|
|
proto_tree_add_uint_format(subtree, hf_tcap_tag, asn1->tvb, saved_offset, asn1->offset - saved_offset, tag,
|
|
|
|
"Transaction ID Identifier");
|
|
|
|
|
|
|
|
dissect_tcap_len(asn1, tcap_tree, &def_len, &len);
|
|
|
|
|
|
|
|
if (len != 8)
|
|
|
|
{
|
|
|
|
return TC_DS_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_string_value_decode(asn1, 4, &poctets);
|
|
|
|
val = 0;
|
|
|
|
memcpy(&val, poctets, 4);
|
|
|
|
ti = proto_tree_add_uint(subtree, hf_tcap_id, asn1->tvb, saved_offset, asn1->offset - saved_offset, val);
|
|
|
|
g_free(poctets);
|
|
|
|
|
|
|
|
if (check_col(g_pinfo->cinfo, COL_INFO))
|
|
|
|
col_append_fstr(g_pinfo->cinfo, COL_INFO, "otid(%x) ", val);
|
|
|
|
|
|
|
|
saved_offset = asn1->offset;
|
|
|
|
ret = asn1_string_value_decode(asn1, 4, &poctets);
|
|
|
|
val = 0;
|
|
|
|
memcpy(&val, poctets, 4);
|
|
|
|
ti = proto_tree_add_uint(subtree, hf_tcap_id, asn1->tvb, saved_offset, asn1->offset - saved_offset, val);
|
|
|
|
g_free(poctets);
|
|
|
|
|
|
|
|
if (check_col(g_pinfo->cinfo, COL_INFO))
|
|
|
|
col_append_fstr(g_pinfo->cinfo, COL_INFO, "rtid(%x) ", val);
|
|
|
|
|
|
|
|
proto_item_set_len(trans_item, asn1->offset - trans_start);
|
|
|
|
|
|
|
|
dissect_ansi_tcap_components(asn1, tcap_tree);
|
|
|
|
|
|
|
|
return TC_DS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dissect_ansi_tcap_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tcap_tree)
|
|
|
|
{
|
|
|
|
ASN1_SCK asn1;
|
|
|
|
guint msg_type_tag;
|
|
|
|
proto_item *ti;
|
|
|
|
guint offset = 0;
|
|
|
|
guint saved_offset = 0;
|
|
|
|
guint len;
|
|
|
|
gchar *str = NULL;
|
|
|
|
gboolean def_len;
|
|
|
|
|
|
|
|
asn1_open(&asn1, tvb, offset);
|
|
|
|
|
|
|
|
asn1_id_decode1(&asn1, &msg_type_tag);
|
|
|
|
|
|
|
|
str = match_strval(msg_type_tag, ansi_msg_type_strings);
|
|
|
|
|
|
|
|
if (str == NULL)
|
|
|
|
{
|
|
|
|
proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1.tvb, offset, -1, "Unknown message type, ignoring");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
|
|
{
|
|
|
|
col_set_str(pinfo->cinfo, COL_INFO, str);
|
|
|
|
col_append_str(pinfo->cinfo, COL_INFO, " ");
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_tree_add_uint_hidden(tcap_tree, hf_tcap_ssn, asn1.tvb, offset,
|
2003-10-16 18:15:54 +00:00
|
|
|
0, pinfo->match_port); /* len -1 is unacceptable */
|
2003-10-02 06:13:29 +00:00
|
|
|
|
|
|
|
ti = proto_tree_add_uint(tcap_tree, hf_ansi_tcap_message_type, asn1.tvb, offset, asn1.offset - saved_offset,
|
|
|
|
msg_type_tag);
|
|
|
|
|
|
|
|
dissect_tcap_len(&asn1, tcap_tree, &def_len, &len);
|
|
|
|
|
|
|
|
switch(msg_type_tag)
|
|
|
|
{
|
|
|
|
case ANSI_ST_MSG_TYP_UNI:
|
2003-10-16 18:15:54 +00:00
|
|
|
dissect_ansi_tcap_unidirectional(&asn1, tcap_tree);
|
|
|
|
break;
|
2003-10-02 06:13:29 +00:00
|
|
|
case ANSI_ST_MSG_TYP_QWP:
|
2003-10-16 18:15:54 +00:00
|
|
|
dissect_ansi_tcap_qwp_qwop(&asn1, tcap_tree, ti);
|
|
|
|
break;
|
2003-10-02 06:13:29 +00:00
|
|
|
case ANSI_ST_MSG_TYP_QWOP:
|
2003-10-16 18:15:54 +00:00
|
|
|
dissect_ansi_tcap_qwp_qwop(&asn1, tcap_tree, ti);
|
|
|
|
break;
|
2003-10-02 06:13:29 +00:00
|
|
|
case ANSI_ST_MSG_TYP_RSP:
|
2003-10-16 18:15:54 +00:00
|
|
|
dissect_ansi_tcap_rsp(&asn1, tcap_tree, ti);
|
|
|
|
break;
|
2003-10-02 06:13:29 +00:00
|
|
|
case ANSI_ST_MSG_TYP_CWP:
|
2003-10-16 18:15:54 +00:00
|
|
|
dissect_ansi_tcap_cwp_cwop(&asn1, tcap_tree, ti);
|
|
|
|
break;
|
2003-10-02 06:13:29 +00:00
|
|
|
case ANSI_ST_MSG_TYP_CWOP:
|
2003-10-16 18:15:54 +00:00
|
|
|
dissect_ansi_tcap_cwp_cwop(&asn1, tcap_tree, ti);
|
|
|
|
break;
|
2003-11-14 01:35:08 +00:00
|
|
|
case ANSI_ST_MSG_TYP_ABT:
|
2003-10-16 18:15:54 +00:00
|
|
|
dissect_ansi_tcap_abort(&asn1, tcap_tree, ti);
|
|
|
|
break;
|
2003-10-02 06:13:29 +00:00
|
|
|
default:
|
2003-10-16 18:15:54 +00:00
|
|
|
proto_tree_add_none_format(tcap_tree, hf_tcap_none, asn1.tvb, offset, -1,
|
|
|
|
"Message type not handled, ignoring");
|
|
|
|
break;
|
2003-10-02 06:13:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
asn1_close(&asn1, &saved_offset);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Code to actually dissect the packets */
|
|
|
|
static void
|
|
|
|
dissect_tcap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
|
|
|
proto_item *ti;
|
|
|
|
proto_tree *tcap_tree;
|
|
|
|
|
|
|
|
g_pinfo = pinfo;
|
|
|
|
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "TCAP");
|
|
|
|
|
|
|
|
/* In the interest of speed, if "tree" is NULL, don't do any
|
|
|
|
* work not necessary to generate protocol tree items.
|
|
|
|
*/
|
|
|
|
if (tree)
|
|
|
|
{
|
|
|
|
ti = proto_tree_add_item(tree, proto_tcap, tvb, 0, -1, FALSE);
|
|
|
|
tcap_tree = proto_item_add_subtree(ti, ett_tcap);
|
|
|
|
g_tcap_tree = tree;
|
|
|
|
|
|
|
|
if (tcap_standard == ITU_TCAP_STANDARD)
|
|
|
|
{
|
|
|
|
dissect_tcap_message(tvb, pinfo, tcap_tree);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
dissect_ansi_tcap_message(tvb, pinfo, tcap_tree);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Register the protocol with Ethereal */
|
|
|
|
|
|
|
|
/* this format is require because a script is used to build the C function
|
|
|
|
that calls all the protocol registration.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
proto_register_tcap(void)
|
|
|
|
{
|
|
|
|
|
|
|
|
/* Setup list of header fields See Section 1.6.1 for details*/
|
2003-10-16 18:15:54 +00:00
|
|
|
static hf_register_info hf[] = {
|
|
|
|
/*{ &hf_tcap_FIELDABBREV,
|
|
|
|
{ "FIELDNAME", "PROTOABBREV.FIELDABBREV",
|
|
|
|
FIELDTYPE, FIELDBASE, FIELDCONVERT, BITMASK,
|
|
|
|
"FIELDDESCR" }
|
|
|
|
},*/
|
|
|
|
{ &hf_tcap_tag,
|
|
|
|
{ "Tag", "tcap.msgtype",
|
|
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_tcap_length,
|
|
|
|
{ "Length", "tcap.len",
|
|
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_tcap_id,
|
|
|
|
{ "Value", "tcap.id",
|
|
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_tcap_message_type,
|
|
|
|
{ "Message Type", "tcap.msgtype",
|
|
|
|
FT_UINT8, BASE_HEX, VALS(msg_type_strings), 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_ansi_tcap_message_type,
|
|
|
|
{ "Message Type", "tcap.msgtype",
|
|
|
|
FT_UINT8, BASE_HEX, VALS(ansi_msg_type_strings), 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_tcap_none,
|
|
|
|
{ "Sub tree", "tcap.none",
|
|
|
|
FT_NONE, 0, 0, 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_tcap_tid,
|
|
|
|
{ "Transaction Id", "tcap.tid",
|
|
|
|
FT_UINT32, BASE_DEC, VALS(tid_strings), 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_tcap_ssn,
|
|
|
|
{ "Called or Calling SubSystem Number", "tcap.ssn",
|
|
|
|
FT_UINT8, BASE_DEC, 0x0, 0x0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_tcap_dlg_type,
|
|
|
|
{ "Dialogue Type", "tcap.dlgtype",
|
|
|
|
FT_UINT8, BASE_HEX, VALS(dlg_type_strings), 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_tcap_app_con_name,
|
|
|
|
{ "Application Context Name", "tcap.dlg.appconname",
|
|
|
|
FT_BYTES, BASE_HEX, 0, 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_tcap_bytes,
|
|
|
|
{ "Binary Data", "tcap.data",
|
|
|
|
FT_BYTES, BASE_HEX, 0, 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_tcap_int,
|
|
|
|
{ "Integer Data", "tcap.data",
|
|
|
|
FT_INT32, BASE_DEC, 0, 0,
|
|
|
|
"", HFILL }
|
|
|
|
},
|
|
|
|
};
|
2003-10-02 06:13:29 +00:00
|
|
|
|
|
|
|
/* Setup protocol subtree array */
|
2003-10-16 18:15:54 +00:00
|
|
|
static gint *ett[] = {
|
|
|
|
&ett_tcap,
|
|
|
|
&ett_otid,
|
|
|
|
&ett_dtid,
|
|
|
|
&ett_dlg_portion,
|
|
|
|
&ett_cmp_portion,
|
|
|
|
&ett_reason,
|
|
|
|
&ett_dlg_req,
|
|
|
|
&ett_dlg_rsp,
|
2003-11-14 01:35:08 +00:00
|
|
|
&ett_dlg_abort,
|
2003-10-16 18:15:54 +00:00
|
|
|
&ett_component,
|
|
|
|
&ett_error,
|
|
|
|
&ett_problem,
|
|
|
|
&ett_params,
|
|
|
|
&ett_param,
|
|
|
|
};
|
|
|
|
|
|
|
|
static enum_val_t tcap_options[] = {
|
|
|
|
{ "ITU", ITU_TCAP_STANDARD },
|
|
|
|
{ "ANSI", ANSI_TCAP_STANDARD },
|
|
|
|
{ NULL, 0 }
|
|
|
|
};
|
|
|
|
|
|
|
|
module_t *tcap_module;
|
2003-10-02 06:13:29 +00:00
|
|
|
|
|
|
|
/* Register the protocol name and description */
|
2003-10-16 18:15:54 +00:00
|
|
|
proto_tcap = proto_register_protocol("Transaction Capabilities Application Part",
|
|
|
|
"TCAP", "tcap");
|
2003-10-02 06:13:29 +00:00
|
|
|
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
2003-10-16 18:15:54 +00:00
|
|
|
proto_register_field_array(proto_tcap, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-10-16 18:15:54 +00:00
|
|
|
tcap_module = prefs_register_protocol(proto_tcap, proto_reg_handoff_tcap);
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-10-16 18:15:54 +00:00
|
|
|
prefs_register_enum_preference(tcap_module, "standard", "TCAP standard",
|
|
|
|
"The SS7 standard used in TCAP packets",
|
|
|
|
(gint *)&tcap_standard, tcap_options, FALSE);
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-10-16 18:15:54 +00:00
|
|
|
prefs_register_bool_preference(tcap_module, "lock_info_col", "Lock Info column",
|
|
|
|
"Always show TCAP in Info column",
|
|
|
|
&lock_info_col);
|
2003-10-02 06:13:29 +00:00
|
|
|
|
2003-10-16 18:15:54 +00:00
|
|
|
/* we will fake a ssn subfield which has the same value obtained from sccp */
|
|
|
|
tcap_itu_ssn_dissector_table = register_dissector_table("tcap.itu_ssn", "ITU TCAP SSN", FT_UINT8, BASE_DEC);
|
|
|
|
tcap_ansi_ssn_dissector_table = register_dissector_table("tcap.ansi_ssn", "ANSI TCAP SSN", FT_UINT8, BASE_DEC);
|
2003-10-02 06:13:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* If this dissector uses sub-dissector registration add a registration routine.
|
|
|
|
This format is required because a script is used to find these routines and
|
|
|
|
create the code that calls these routines.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
proto_reg_handoff_tcap(void)
|
|
|
|
{
|
|
|
|
static gboolean tcap_prefs_initialized = FALSE;
|
|
|
|
dissector_handle_t tcap_handle;
|
|
|
|
|
|
|
|
if (!tcap_prefs_initialized)
|
|
|
|
{
|
|
|
|
tcap_handle = create_dissector_handle(dissect_tcap,
|
|
|
|
proto_tcap);
|
|
|
|
|
|
|
|
dissector_add("sccp.ssn", 5, tcap_handle); /* MAP*/
|
|
|
|
dissector_add("sccp.ssn", 6, tcap_handle); /* HLR*/
|
|
|
|
dissector_add("sccp.ssn", 7, tcap_handle); /* VLR */
|
|
|
|
dissector_add("sccp.ssn", 8, tcap_handle); /* MSC */
|
|
|
|
dissector_add("sccp.ssn", 9, tcap_handle); /* EIR */
|
|
|
|
dissector_add("sccp.ssn", 10, tcap_handle); /* EIR */
|
|
|
|
dissector_add("sccp.ssn", 11, tcap_handle); /* SMS/MC */
|
|
|
|
dissector_add("sccp.ssn", 12, tcap_handle); /* IS41 OTAF */
|
|
|
|
|
|
|
|
tcap_prefs_initialized = TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
data_handle = find_dissector("data");
|
|
|
|
}
|