forked from osmocom/wireshark
9bcac48403
Started by grepping call_dissector_with_data, call_dissector_only and call_dissector and traced the handles passed into them to a find_dissector within the dissector. Then replaced find_dissector with find_dissector_add_dependency and added the protocol id from the dissector. "data" dissector was not considered to be a dependency. Change-Id: I15d0d77301306587ef8e7af5876e74231816890d Reviewed-on: https://code.wireshark.org/review/14509 Petri-Dish: Michael Mann <mmann78@netscape.net> Reviewed-by: Michael Mann <mmann78@netscape.net>
589 lines
16 KiB
C
589 lines
16 KiB
C
/* packet-gsm_a_rp.c
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* Routines for GSM A Interface RP dissection - SMS GSM layer 3
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*
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* Copyright 2003, Michael Lum <mlum [AT] telostech.com>
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* In association with Telos Technology Inc.
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*
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* Title 3GPP Other
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*
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* Reference [5]
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* Point-to-Point (PP) Short Message Service (SMS)
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* support on mobile radio interface
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* (3GPP TS 24.011 version 4.1.1 Release 4)
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/expert.h>
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#include "packet-gsm_a_common.h"
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void proto_register_gsm_a_rp(void);
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void proto_reg_handoff_gsm_a_rp(void);
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/* PROTOTYPES/FORWARDS */
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static const value_string gsm_rp_msg_strings[] = {
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{ 0x00, "RP-DATA (MS to Network)" },
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{ 0x01, "RP-DATA (Network to MS)" },
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{ 0x02, "RP-ACK (MS to Network)" },
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{ 0x03, "RP-ACK (Network to MS)" },
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{ 0x04, "RP-ERROR (MS to Network)" },
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{ 0x05, "RP-ERROR (Network to MS)" },
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{ 0x06, "RP-SMMA (MS to Network)" },
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{ 0, NULL }
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};
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typedef enum
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{
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/* Short Message Service Information Elements [5] 8.2 */
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DE_RP_MESSAGE_REF, /* RP-Message Reference */
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DE_RP_ORIG_ADDR, /* RP-Originator Address */
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DE_RP_DEST_ADDR, /* RP-Destination Address */
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DE_RP_USER_DATA, /* RP-User Data */
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DE_RP_CAUSE, /* RP-Cause */
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DE_RP_NONE /* NONE */
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}
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rp_elem_idx_t;
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static const value_string gsm_rp_elem_strings[] = {
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/* Short Message Service RP Information Elements [5] 8.2 */
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{ DE_RP_MESSAGE_REF, "RP-Message Reference" },
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{ DE_RP_ORIG_ADDR, "RP-Originator Address" },
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{ DE_RP_DEST_ADDR, "RP-Destination Address" },
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{ DE_RP_USER_DATA, "RP-User Data" },
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{ DE_RP_CAUSE, "RP-Cause" },
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{ 0, NULL }
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};
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value_string_ext gsm_rp_elem_strings_ext = VALUE_STRING_EXT_INIT(gsm_rp_elem_strings);
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/* Initialize the protocol and registered fields */
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static int proto_a_rp = -1;
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static int hf_gsm_a_rp_msg_type = -1;
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int hf_gsm_a_rp_elem_id = -1;
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/* Generated from convert_proto_tree_add_text.pl */
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static int hf_gsm_a_rp_tpdu = -1;
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static int hf_gsm_a_rp_extension = -1;
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static int hf_gsm_a_rp_diagnostic_field = -1;
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static int hf_gsm_a_rp_cause = -1;
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static int hf_gsm_a_rp_message_elements = -1;
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static int hf_gsm_a_rp_rp_message_reference = -1;
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/* Initialize the subtree pointers */
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static gint ett_rp_msg = -1;
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static expert_field ei_gsm_a_rp_extraneous_data = EI_INIT;
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static dissector_handle_t gsm_sms_handle; /* SMS TPDU */
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static proto_tree *g_tree;
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#define NUM_GSM_RP_ELEM (sizeof(gsm_rp_elem_strings)/sizeof(value_string))
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gint ett_gsm_rp_elem[NUM_GSM_RP_ELEM];
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/*
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* [5] 8.2.3
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*/
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static guint16
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de_rp_message_ref(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len _U_, gchar *add_string _U_, int string_len _U_)
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{
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guint32 curr_offset;
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curr_offset = offset;
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proto_tree_add_item(tree, hf_gsm_a_rp_rp_message_reference, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
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curr_offset++;
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/* no length check possible */
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return(curr_offset - offset);
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}
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/*
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* [5] 8.2.5.1
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*/
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static guint16
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de_rp_orig_addr(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string, int string_len)
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{
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return(de_cld_party_bcd_num(tvb, tree, pinfo, offset, len, add_string, string_len));
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}
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/*
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* [5] 8.2.5.2
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*/
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static guint16
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de_rp_dest_addr(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string, int string_len)
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{
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return(de_cld_party_bcd_num(tvb, tree, pinfo, offset, len, add_string, string_len));
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}
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/*
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* [5] 8.2.5.3
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*/
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static guint16
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de_rp_user_data(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, guint32 offset, guint len, gchar *add_string _U_, int string_len _U_)
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{
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guint32 curr_offset;
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tvbuff_t *tpdu_tvb;
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curr_offset = offset;
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proto_tree_add_bytes_format(tree, hf_gsm_a_rp_tpdu, tvb, curr_offset, len, NULL, "TPDU (not displayed)");
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/*
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* dissect the embedded TPDU message
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*/
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tpdu_tvb = tvb_new_subset_length(tvb, curr_offset, len);
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call_dissector_only(gsm_sms_handle, tpdu_tvb, pinfo, g_tree, NULL);
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curr_offset += len;
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EXTRANEOUS_DATA_CHECK(len, curr_offset - offset, pinfo, &ei_gsm_a_rp_extraneous_data);
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return(curr_offset - offset);
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}
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/*
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* [5] 8.2.5.4
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*/
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static const value_string gsm_rp_cause_vals[] = {
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{ 1, "Unassigned (unallocated) number" },
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{ 8, "Operator determined barring" },
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{ 10, "Call barred" },
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{ 11, "Reserved" },
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{ 21, "Short message transfer rejected" },
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{ 22, "Memory capacity exceeded" },
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{ 27, "Destination out of order" },
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{ 28, "Unidentified subscriber" },
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{ 29, "Facility rejected" },
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{ 30, "Unknown subscriber" },
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{ 38, "Network out of order" },
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{ 41, "Temporary failure" },
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{ 42, "Congestion" },
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{ 47, "Resources unavailable, unspecified" },
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{ 50, "Requested facility not subscribed" },
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{ 69, "Requested facility not implemented" },
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{ 81, "Invalid short message transfer reference value" },
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{ 95, "Semantically incorrect message" },
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{ 96, "Invalid mandatory information" },
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{ 97, "Message type non-existent or not implemented" },
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{ 98, "Message not compatible with short message protocol state" },
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{ 99, "Information element non-existent or not implemented" },
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{ 111, "Protocol error, unspecified" },
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{ 127, "Interworking, unspecified" },
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{ 0, NULL }
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};
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value_string_ext gsm_rp_cause_vals_ext = VALUE_STRING_EXT_INIT(gsm_rp_cause_vals);
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static const true_false_string tfs_extended_no_extension = { "Extended", "No extension"};
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static guint16
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de_rp_cause(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len, gchar *add_string, int string_len)
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{
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guint8 oct;
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guint32 curr_offset;
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curr_offset = offset;
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oct = tvb_get_guint8(tvb, curr_offset);
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proto_tree_add_item(tree, hf_gsm_a_rp_extension, tvb, curr_offset, 1, ENC_NA);
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proto_tree_add_item(tree, hf_gsm_a_rp_cause, tvb, curr_offset, 1, ENC_BIG_ENDIAN);
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curr_offset++;
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if (add_string)
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g_snprintf(add_string, string_len, " - (%u) %s", oct & 0x7f, val_to_str_ext_const(oct & 0x7f, &gsm_rp_cause_vals_ext, "Reserved"));
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NO_MORE_DATA_CHECK(len);
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proto_tree_add_item(tree, hf_gsm_a_rp_diagnostic_field, tvb, curr_offset, len - (curr_offset - offset), ENC_NA);
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curr_offset += len - (curr_offset - offset);
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EXTRANEOUS_DATA_CHECK(len, curr_offset - offset, pinfo, &ei_gsm_a_rp_extraneous_data);
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return(curr_offset - offset);
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}
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guint16 (*rp_elem_fcn[])(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, guint32 offset, guint len, gchar *add_string, int string_len) = {
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/* Short Message Service Information Elements [5] 8.2 */
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de_rp_message_ref, /* RP-Message Reference */
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de_rp_orig_addr, /* RP-Originator Address */
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de_rp_dest_addr, /* RP-Destination Address */
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de_rp_user_data, /* RP-User Data */
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de_rp_cause, /* RP-Cause */
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NULL, /* NONE */
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};
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/* MESSAGE FUNCTIONS */
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/*
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* [5] 7.3.1.1
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*/
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void
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rp_data_n_ms(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, guint32 offset, guint len)
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{
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guint32 curr_offset;
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guint32 consumed;
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guint curr_len;
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curr_offset = offset;
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curr_len = len;
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pinfo->p2p_dir = P2P_DIR_SENT;
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ELEM_MAND_V(GSM_A_PDU_TYPE_RP, DE_RP_MESSAGE_REF, NULL);
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ELEM_MAND_LV(GSM_A_PDU_TYPE_RP, DE_RP_ORIG_ADDR, NULL);
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ELEM_MAND_LV(GSM_A_PDU_TYPE_RP, DE_RP_DEST_ADDR, NULL);
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ELEM_MAND_LV(GSM_A_PDU_TYPE_RP, DE_RP_USER_DATA, NULL);
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EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_rp_extraneous_data);
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}
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/*
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* [5] 7.3.1.2
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*/
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static void
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rp_data_ms_n(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, guint32 offset, guint len)
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{
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guint32 curr_offset;
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guint32 consumed;
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guint curr_len;
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curr_offset = offset;
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curr_len = len;
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pinfo->p2p_dir = P2P_DIR_RECV;
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ELEM_MAND_V(GSM_A_PDU_TYPE_RP, DE_RP_MESSAGE_REF, NULL);
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ELEM_MAND_LV(GSM_A_PDU_TYPE_RP, DE_RP_ORIG_ADDR, NULL);
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ELEM_MAND_LV(GSM_A_PDU_TYPE_RP, DE_RP_DEST_ADDR, NULL);
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ELEM_MAND_LV(GSM_A_PDU_TYPE_RP, DE_RP_USER_DATA, NULL);
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EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_rp_extraneous_data);
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}
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/*
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* [5] 7.3.2
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*/
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static void
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rp_smma(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len)
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{
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guint32 curr_offset;
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guint32 consumed;
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guint curr_len;
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curr_offset = offset;
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curr_len = len;
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ELEM_MAND_V(GSM_A_PDU_TYPE_RP, DE_RP_MESSAGE_REF, NULL);
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EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_rp_extraneous_data);
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}
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/*
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* [5] 7.3.3
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*/
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static void
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rp_ack_n_ms(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, guint32 offset, guint len)
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{
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guint32 curr_offset;
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guint32 consumed;
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guint curr_len;
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curr_offset = offset;
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curr_len = len;
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pinfo->p2p_dir = P2P_DIR_SENT;
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ELEM_MAND_V(GSM_A_PDU_TYPE_RP, DE_RP_MESSAGE_REF, NULL);
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ELEM_OPT_TLV(0x41, GSM_A_PDU_TYPE_RP, DE_RP_USER_DATA, NULL);
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EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_rp_extraneous_data);
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}
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/*
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* [5] 7.3.3
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*/
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static void
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rp_ack_ms_n(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, guint32 offset, guint len)
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{
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guint32 curr_offset;
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guint32 consumed;
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guint curr_len;
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curr_offset = offset;
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curr_len = len;
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pinfo->p2p_dir = P2P_DIR_RECV;
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ELEM_MAND_V(GSM_A_PDU_TYPE_RP, DE_RP_MESSAGE_REF, NULL);
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ELEM_OPT_TLV(0x41, GSM_A_PDU_TYPE_RP, DE_RP_USER_DATA, NULL);
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EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_rp_extraneous_data);
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}
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/*
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* [5] 7.3.4
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*/
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static void
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rp_error_n_ms(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, guint32 offset, guint len)
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{
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guint32 curr_offset;
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guint32 consumed;
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guint curr_len;
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curr_offset = offset;
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curr_len = len;
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pinfo->p2p_dir = P2P_DIR_SENT;
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ELEM_MAND_V(GSM_A_PDU_TYPE_RP, DE_RP_MESSAGE_REF, NULL);
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ELEM_MAND_LV(GSM_A_PDU_TYPE_RP, DE_RP_CAUSE, NULL);
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ELEM_OPT_TLV(0x41, GSM_A_PDU_TYPE_RP, DE_RP_USER_DATA, NULL);
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EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_rp_extraneous_data);
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}
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/*
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* [5] 7.3.4
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*/
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static void
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rp_error_ms_n(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo, guint32 offset, guint len)
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{
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guint32 curr_offset;
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guint32 consumed;
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guint curr_len;
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curr_offset = offset;
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curr_len = len;
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pinfo->p2p_dir = P2P_DIR_RECV;
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ELEM_MAND_V(GSM_A_PDU_TYPE_RP, DE_RP_MESSAGE_REF, NULL);
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ELEM_MAND_LV(GSM_A_PDU_TYPE_RP, DE_RP_CAUSE, NULL);
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ELEM_OPT_TLV(0x41, GSM_A_PDU_TYPE_RP, DE_RP_USER_DATA, NULL);
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EXTRANEOUS_DATA_CHECK(curr_len, 0, pinfo, &ei_gsm_a_rp_extraneous_data);
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}
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#define NUM_GSM_RP_MSG (sizeof(gsm_rp_msg_strings)/sizeof(value_string))
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static gint ett_gsm_rp_msg[NUM_GSM_RP_MSG];
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static void (*rp_msg_fcn[])(tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo _U_, guint32 offset, guint len) = {
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rp_data_ms_n, /* RP-DATA (MS to Network) */
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rp_data_n_ms, /* RP-DATA (Network to MS) */
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rp_ack_ms_n, /* RP-ACK (MS to Network) */
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rp_ack_n_ms, /* RP-ACK (Network to MS) */
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rp_error_ms_n, /* RP-ERROR (MS to Network) */
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rp_error_n_ms, /* RP-ERROR (Network to MS) */
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rp_smma, /* RP-SMMA (MS to Network) */
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NULL, /* NONE */
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};
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/* GENERIC DISSECTOR FUNCTIONS */
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static int
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dissect_rp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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guint8 oct;
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guint32 offset, saved_offset;
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guint32 len;
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gint idx;
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proto_item *rp_item = NULL;
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proto_tree *rp_tree = NULL;
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const gchar *str;
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col_append_str(pinfo->cinfo, COL_INFO, "(RP) ");
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offset = 0;
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saved_offset = offset;
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g_tree = tree;
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len = tvb_reported_length(tvb);
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/*
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* add RP message name
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*/
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oct = tvb_get_guint8(tvb, offset++);
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str = try_val_to_str_idx((guint32) oct, gsm_rp_msg_strings, &idx);
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/*
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* create the protocol tree
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*/
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if (str == NULL)
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{
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rp_item =
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proto_tree_add_protocol_format(tree, proto_a_rp, tvb, 0, len,
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"GSM A-I/F RP - Unknown RP Message Type (0x%02x)",
|
|
oct);
|
|
|
|
rp_tree = proto_item_add_subtree(rp_item, ett_rp_msg);
|
|
}
|
|
else
|
|
{
|
|
rp_item =
|
|
proto_tree_add_protocol_format(tree, proto_a_rp, tvb, 0, -1,
|
|
"GSM A-I/F RP - %s",
|
|
str);
|
|
|
|
rp_tree = proto_item_add_subtree(rp_item, ett_gsm_rp_msg[idx]);
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", str);
|
|
}
|
|
|
|
/*
|
|
* add RP message name
|
|
*/
|
|
proto_tree_add_uint_format(rp_tree, hf_gsm_a_rp_msg_type,
|
|
tvb, saved_offset, 1, oct, "Message Type %s", str ? str : "(Unknown)");
|
|
|
|
if (str == NULL) return offset;
|
|
|
|
if (offset >=len) return offset;
|
|
|
|
/*
|
|
* decode elements
|
|
*/
|
|
if (rp_msg_fcn[idx] == NULL)
|
|
{
|
|
proto_tree_add_item(rp_tree, hf_gsm_a_rp_message_elements, tvb, offset, len - offset, ENC_NA);
|
|
}
|
|
else
|
|
{
|
|
(*rp_msg_fcn[idx])(tvb, rp_tree, pinfo, offset, len - offset);
|
|
}
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
/* Register the protocol with Wireshark */
|
|
void
|
|
proto_register_gsm_a_rp(void)
|
|
{
|
|
guint i;
|
|
guint last_offset;
|
|
|
|
/* Setup list of header fields */
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_gsm_a_rp_msg_type,
|
|
{ "RP Message Type", "gsm_a.rp.msg_type",
|
|
FT_UINT8, BASE_HEX, VALS(gsm_rp_msg_strings), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_gsm_a_rp_elem_id,
|
|
{ "Element ID", "gsm_a.rp.elem_id",
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
NULL, HFILL }
|
|
},
|
|
|
|
/* Generated from convert_proto_tree_add_text.pl */
|
|
{ &hf_gsm_a_rp_rp_message_reference, { "RP-Message Reference", "gsm_a.rp.rp_message_reference", FT_UINT8, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_gsm_a_rp_tpdu, { "TPDU", "gsm_a.rp.tpdu", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_gsm_a_rp_extension, { "Extension", "gsm_a.rp.extension", FT_BOOLEAN, 8, TFS(&tfs_extended_no_extension), 0x80, NULL, HFILL }},
|
|
{ &hf_gsm_a_rp_cause, { "Cause", "gsm_a.rp.cause", FT_UINT8, BASE_DEC|BASE_EXT_STRING, &gsm_rp_cause_vals_ext, 0x7F, NULL, HFILL }},
|
|
{ &hf_gsm_a_rp_diagnostic_field, { "Diagnostic field", "gsm_a.rp.diagnostic_field", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_gsm_a_rp_message_elements, { "Message Elements", "gsm_a.rp.message_elements", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_gsm_a_rp_extraneous_data, { "gsm_a.rp.extraneous_data", PI_PROTOCOL, PI_NOTE, "Extraneous Data, dissector bug or later version spec(report to wireshark.org)", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_gsm_a_rp;
|
|
|
|
/* Setup protocol subtree array */
|
|
#define NUM_INDIVIDUAL_ELEMS 1
|
|
gint *ett[NUM_INDIVIDUAL_ELEMS +
|
|
NUM_GSM_RP_MSG +
|
|
NUM_GSM_RP_ELEM];
|
|
|
|
ett[0] = &ett_rp_msg;
|
|
|
|
last_offset = NUM_INDIVIDUAL_ELEMS;
|
|
|
|
for (i=0; i < NUM_GSM_RP_MSG; i++, last_offset++)
|
|
{
|
|
ett_gsm_rp_msg[i] = -1;
|
|
ett[last_offset] = &ett_gsm_rp_msg[i];
|
|
}
|
|
|
|
for (i=0; i < NUM_GSM_RP_ELEM; i++, last_offset++)
|
|
{
|
|
ett_gsm_rp_elem[i] = -1;
|
|
ett[last_offset] = &ett_gsm_rp_elem[i];
|
|
}
|
|
|
|
/* Register the protocol name and description */
|
|
|
|
proto_a_rp = proto_register_protocol("GSM A-I/F RP", "GSM RP", "gsm_a.rp");
|
|
|
|
proto_register_field_array(proto_a_rp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_gsm_a_rp = expert_register_protocol(proto_a_rp);
|
|
expert_register_field_array(expert_gsm_a_rp, ei, array_length(ei));
|
|
|
|
register_dissector("gsm_a_rp", dissect_rp, proto_a_rp);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_gsm_a_rp(void)
|
|
{
|
|
dissector_handle_t gsm_a_rp_handle;
|
|
|
|
gsm_a_rp_handle = create_dissector_handle(dissect_rp, proto_a_rp);
|
|
/* Dissect messages embedded in SIP */
|
|
dissector_add_string("media_type","application/vnd.3gpp.sms", gsm_a_rp_handle);
|
|
gsm_sms_handle = find_dissector_add_dependency("gsm_sms", proto_a_rp);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|