/* packet-ansi_tcap-template.c * Routines for ANSI TCAP * Copyright 2007 Anders Broman * Built from the gsm-map dissector Copyright 2004 - 2005, Anders Broman * * $Id$ * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * References: T1.114 */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #include #include #include #include "packet-ber.h" #include "packet-tcap.h" #include "packet-ansi_tcap.h" #include "epan/tcap-persistentdata.h" #define PNAME "ANSI Transaction Capabilities Application Part" #define PSNAME "ANSI_TCAP" #define PFNAME "ansi_tcap" /* Initialize the protocol and registered fields */ int proto_ansi_tcap = -1; static int hf_ansi_tcap_tag = -1; static int hf_ansi_tcap_length = -1; static int hf_ansi_tcap_data = -1; static int hf_ansi_tcap_tid = -1; int hf_ansi_tcapsrt_SessionId=-1; int hf_ansi_tcapsrt_Duplicate=-1; int hf_ansi_tcapsrt_BeginSession=-1; int hf_ansi_tcapsrt_EndSession=-1; int hf_ansi_tcapsrt_SessionTime=-1; #include "packet-ansi_tcap-hf.c" /* Initialize the subtree pointers */ static gint ett_tcap = -1; static gint ett_param = -1; static gint ett_otid = -1; static gint ett_dtid = -1; gint ett_ansi_tcap_stat = -1; static struct tcapsrt_info_t * gp_tcapsrt_info; static gboolean tcap_subdissector_used=FALSE; static dissector_handle_t requested_subdissector_handle = NULL; static struct tcaphash_context_t * gp_tcap_context=NULL; #include "packet-ansi_tcap-ett.c" #define MAX_SSN 254 static range_t *global_ssn_range; static range_t *ssn_range; struct tcap_private_t ansi_tcap_private; gboolean g_ansi_tcap_HandleSRT=FALSE; extern gboolean gtcap_PersistentSRT; extern gboolean gtcap_DisplaySRT; extern guint gtcap_RepetitionTimeout; extern guint gtcap_LostTimeout; static dissector_handle_t tcap_handle = NULL; static dissector_table_t ber_oid_dissector_table=NULL; static const char * cur_oid; static const char * tcapext_oid; static proto_tree * tcap_top_tree=NULL; static proto_tree * tcap_stat_tree=NULL; static proto_item * tcap_stat_item=NULL; static dissector_handle_t data_handle; static dissector_table_t sccp_ssn_table; static void raz_ansi_tcap_private(struct tcap_private_t * p_ansi_tcap_private); static GHashTable* ansi_sub_dissectors = NULL; static GHashTable* itu_sub_dissectors = NULL; static void dissect_ansi_tcap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree); /* extern void add_ansi_tcap_subdissector(guint32 ssn, dissector_handle_t dissector) { g_hash_table_insert(ansi_sub_dissectors,GUINT_TO_POINTER(ssn),dissector); dissector_add("sccp.ssn",ssn,tcap_handle); } extern void delete_ansi_tcap_subdissector(guint32 ssn, dissector_handle_t dissector _U_) { g_hash_table_remove(ansi_sub_dissectors,GUINT_TO_POINTER(ssn)); dissector_delete("sccp.ssn",ssn,tcap_handle); } dissector_handle_t get_ansi_tcap_subdissector(guint32 ssn) { return g_hash_table_lookup(ansi_sub_dissectors,GUINT_TO_POINTER(ssn)); } */ #include "packet-ansi_tcap-fn.c" static void dissect_ansi_tcap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree) { proto_item *item=NULL; proto_tree *tree=NULL; proto_item *stat_item=NULL; proto_tree *stat_tree=NULL; gint offset = 0; struct tcaphash_context_t * p_tcap_context; dissector_handle_t subdissector_handle; asn1_ctx_t asn1_ctx; asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); tcap_top_tree = parent_tree; if (check_col(pinfo->cinfo, COL_PROTOCOL)) { col_set_str(pinfo->cinfo, COL_PROTOCOL, "ANSI TCAP"); } /* create display subtree for the protocol */ if(parent_tree){ item = proto_tree_add_item(parent_tree, proto_ansi_tcap, tvb, 0, -1, FALSE); tree = proto_item_add_subtree(item, ett_tcap); tcap_stat_item=item; tcap_stat_tree=tree; } cur_oid = NULL; tcapext_oid = NULL; raz_ansi_tcap_private(&ansi_tcap_private); pinfo->private_data = &ansi_tcap_private; gp_tcapsrt_info=tcapsrt_razinfo(); tcap_subdissector_used=FALSE; gp_tcap_context=NULL; dissect_ansi_tcap_PackageType(FALSE, tvb, 0, &asn1_ctx, tree, -1); if (g_ansi_tcap_HandleSRT && !tcap_subdissector_used ) { if (gtcap_DisplaySRT && tree) { stat_item = proto_tree_add_text(tree, tvb, 0, 0, "Stat"); PROTO_ITEM_SET_GENERATED(stat_item); stat_tree = proto_item_add_subtree(stat_item, ett_ansi_tcap_stat); } p_tcap_context=tcapsrt_call_matching(tvb, pinfo, stat_tree, gp_tcapsrt_info); ansi_tcap_private.context=p_tcap_context; /* If the current message is TCAP only, * save the Application contexte name for the next messages */ if ( p_tcap_context && cur_oid && !p_tcap_context->oid_present ) { /* Save the application context and the sub dissector */ ber_oid_dissector_table = find_dissector_table("ber.oid"); strncpy(p_tcap_context->oid,cur_oid, LENGTH_OID); if ( (subdissector_handle = dissector_get_string_handle(ber_oid_dissector_table, cur_oid)) ) { p_tcap_context->subdissector_handle=subdissector_handle; p_tcap_context->oid_present=TRUE; } } if (g_ansi_tcap_HandleSRT && p_tcap_context && p_tcap_context->callback) { /* Callback fonction for the upper layer */ (p_tcap_context->callback)(tvb, pinfo, stat_tree, p_tcap_context); } } } static void raz_ansi_tcap_private(struct tcap_private_t * p_ansi_tcap_private) { memset(p_ansi_tcap_private,0,sizeof(struct tcap_private_t) ); } void proto_reg_handoff_ansi_tcap(void) { data_handle = find_dissector("data"); } void proto_register_ansi_tcap(void) { /* Setup list of header fields See Section 1.6.1 for details*/ static hf_register_info hf[] = { { &hf_ansi_tcap_tag, { "Tag", "tcap.msgtype", FT_UINT8, BASE_HEX, NULL, 0, "", HFILL } }, { &hf_ansi_tcap_length, { "Length", "tcap.len", FT_UINT8, BASE_HEX, NULL, 0, "", HFILL } }, { &hf_ansi_tcap_data, { "Data", "tcap.data", FT_BYTES, BASE_HEX, NULL, 0, "", HFILL } }, { &hf_ansi_tcap_tid, { "Transaction Id", "tcap.tid", FT_BYTES, BASE_HEX, NULL, 0, "", HFILL } }, /* Tcap Service Response Time */ { &hf_ansi_tcapsrt_SessionId, { "Session Id", "tcap.srt.session_id", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, { &hf_ansi_tcapsrt_BeginSession, { "Begin Session", "tcap.srt.begin", FT_FRAMENUM, BASE_NONE, NULL, 0x0, "SRT Begin of Session", HFILL } }, { &hf_ansi_tcapsrt_EndSession, { "End Session", "tcap.srt.end", FT_FRAMENUM, BASE_NONE, NULL, 0x0, "SRT End of Session", HFILL } }, { &hf_ansi_tcapsrt_SessionTime, { "Session duration", "tcap.srt.sessiontime", FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0, "Duration of the TCAP session", HFILL } }, { &hf_ansi_tcapsrt_Duplicate, { "Request Duplicate", "tcap.srt.duplicate", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL } }, #include "packet-ansi_tcap-hfarr.c" }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_tcap, &ett_param, &ett_otid, &ett_dtid, &ett_ansi_tcap_stat, #include "packet-ansi_tcap-ettarr.c" }; /*static enum_val_t tcap_options[] = { { "itu", "ITU", ITU_TCAP_STANDARD }, { "ansi", "ANSI", ANSI_TCAP_STANDARD }, { NULL, NULL, 0 } };*/ /* Register the protocol name and description */ proto_ansi_tcap = proto_register_protocol(PNAME, PSNAME, PFNAME); register_dissector("ansi_tcap", dissect_ansi_tcap, proto_ansi_tcap); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_ansi_tcap, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); }