289 lines
11 KiB
C
289 lines
11 KiB
C
/* isi-network.c
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* Dissector for ISI's network resource
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* Copyright 2010, Sebastian Reichel <sre@ring0.de>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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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 <glib.h>
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#include <epan/prefs.h>
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#include <epan/packet.h>
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#include "packet-isi.h"
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#include "isi-network.h"
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static const value_string isi_network_id[] = {
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{0x07, "NET_SET_REQ"},
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{0x08, "NET_SET_RESP"},
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{0x0B, "NET_RSSI_GET_REQ"},
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{0x0C, "NET_RSSI_GET_RESP"},
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{0x1E, "NET_RSSI_IND"},
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{0x20, "NET_CIPHERING_IND"},
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{0x35, "NET_RAT_IND"},
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{0x36, "NET_RAT_REQ"},
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{0x37, "NET_RAT_RESP"},
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{0x42, "NET_CELL_INFO_IND"},
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{0xE0, "NET_REG_STATUS_GET_REQ"},
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{0xE1, "NET_REG_STATUS_GET_RESP"},
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{0xE2, "NET_REG_STATUS_IND"},
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{0xE3, "NET_AVAILABLE_GET_REQ"},
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{0xE4, "NET_AVAILABLE_GET_RESP"},
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{0xE5, "NET_OPER_NAME_READ_REQ"},
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{0xE6, "NET_OPER_NAME_READ_RESP"},
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{0xF0, "NET_COMMON_MESSAGE"},
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{0x00, NULL}
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};
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static const value_string isi_network_status_sub_id[] = {
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{0x00, "NET_REG_INFO_COMMON"},
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{0x02, "NET_OPERATOR_INFO_COMMON"},
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{0x04, "NET_RSSI_CURRENT"},
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{0x09, "NET_GSM_REG_INFO"},
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{0x0B, "NET_DETAILED_NETWORK_INFO"},
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{0x0C, "NET_GSM_OPERATOR_INFO"},
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{0x11, "NET_GSM_BAND_INFO"},
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{0x2C, "NET_RAT_INFO"},
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{0xE1, "NET_AVAIL_NETWORK_INFO_COMMON"},
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{0xE7, "NET_OPER_NAME_INFO"},
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{0x00, NULL}
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};
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static const value_string isi_network_cell_info_sub_id[] = {
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{0x46, "NET_GSM_CELL_INFO"},
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{0x47, "NET_WCDMA_CELL_INFO"},
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{0x50, "NET_EPS_CELL_INFO"},
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{0x00, NULL}
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};
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static dissector_handle_t isi_network_handle;
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static void dissect_isi_network(tvbuff_t *tvb, packet_info *pinfo, proto_item *tree);
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static guint32 hf_isi_network_cmd = -1;
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static guint32 hf_isi_network_data_sub_pkgs = -1;
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static guint32 hf_isi_network_status_sub_type = -1;
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static guint32 hf_isi_network_status_sub_len = -1;
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static guint32 hf_isi_network_status_sub_lac = -1;
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static guint32 hf_isi_network_status_sub_cid = -1;
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static guint32 hf_isi_network_status_sub_msg = -1;
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static guint32 hf_isi_network_status_sub_msg_len = -1;
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static guint32 hf_isi_network_cell_info_sub_type = -1;
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static guint32 hf_isi_network_cell_info_sub_len = -1;
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static guint32 hf_isi_network_cell_info_sub_operator = -1;
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static guint32 hf_isi_network_gsm_band_900 = -1;
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static guint32 hf_isi_network_gsm_band_1800 = -1;
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static guint32 hf_isi_network_gsm_band_1900 = -1;
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static guint32 hf_isi_network_gsm_band_850 = -1;
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static const int *gsm_band_fields[] = {
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&hf_isi_network_gsm_band_900,
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&hf_isi_network_gsm_band_1800,
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&hf_isi_network_gsm_band_1900,
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&hf_isi_network_gsm_band_850,
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NULL
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};
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void proto_reg_handoff_isi_network(void) {
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static gboolean initialized=FALSE;
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if (!initialized) {
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isi_network_handle = create_dissector_handle(dissect_isi_network, proto_isi);
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dissector_add("isi.resource", 0x0a, isi_network_handle);
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}
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}
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void proto_register_isi_network(void) {
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static hf_register_info hf[] = {
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{ &hf_isi_network_cmd,
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{ "Command", "isi.network.cmd", FT_UINT8, BASE_HEX, isi_network_id, 0x0, "Command", HFILL }},
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{ &hf_isi_network_data_sub_pkgs,
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{ "Number of Subpackets", "isi.network.pkgs", FT_UINT8, BASE_DEC, NULL, 0x0, "Number of Subpackets", HFILL }},
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{ &hf_isi_network_status_sub_type,
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{ "Subpacket Type", "isi.network.sub.type", FT_UINT8, BASE_HEX, isi_network_status_sub_id, 0x0, "Subpacket Type", HFILL }},
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{ &hf_isi_network_status_sub_len,
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{ "Subpacket Length", "isi.network.sub.len", FT_UINT8, BASE_DEC, NULL, 0x0, "Subpacket Length", HFILL }},
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{ &hf_isi_network_status_sub_lac,
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{ "Location Area Code (LAC)", "isi.network.sub.lac", FT_UINT16, BASE_HEX_DEC, NULL, 0x0, "Location Area Code (LAC)", HFILL }},
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{ &hf_isi_network_status_sub_cid,
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{ "Cell ID (CID)", "isi.network.sub.cid", FT_UINT32, BASE_HEX_DEC, NULL, 0x0, "Cell ID (CID)", HFILL }},
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{ &hf_isi_network_status_sub_msg_len,
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{ "Message Length", "isi.network.sub.msg", FT_UINT16, BASE_DEC, NULL, 0x0, "Message Length", HFILL }},
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{ &hf_isi_network_status_sub_msg,
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{ "Message", "isi.network.sub.msg", FT_STRING, BASE_NONE, NULL, 0x0, "Message", HFILL }},
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{ &hf_isi_network_cell_info_sub_type,
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{ "Subpacket Type", "isi.network.sub.type", FT_UINT8, BASE_HEX, isi_network_cell_info_sub_id, 0x0, "Subpacket Type", HFILL }},
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{ &hf_isi_network_cell_info_sub_len,
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{ "Subpacket Length", "isi.network.sub.len", FT_UINT8, BASE_DEC, NULL, 0x0, "Subpacket Length", HFILL }},
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{ &hf_isi_network_cell_info_sub_operator,
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{ "Operator Code", "isi.network.sub.operator", FT_UINT24, BASE_HEX, NULL, 0x0, "Operator Code", HFILL }},
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{ &hf_isi_network_gsm_band_900,
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{ "900 Mhz Band", "isi.network.sub.gsm_band_900", FT_BOOLEAN, 32, NULL, 0x00000001, "", HFILL }},
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{ &hf_isi_network_gsm_band_1800,
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{ "1800 Mhz Band", "isi.network.sub.gsm_band_1800", FT_BOOLEAN, 32, NULL, 0x00000002, "", HFILL }},
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{ &hf_isi_network_gsm_band_1900,
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{ "1900 Mhz Band", "isi.network.sub.gsm_band_1900", FT_BOOLEAN, 32, NULL, 0x00000004, "", HFILL }},
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{ &hf_isi_network_gsm_band_850,
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{ "850 Mhz Band", "isi.network.sub.gsm_band_850", FT_BOOLEAN, 32, NULL, 0x00000008, "", HFILL }}
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};
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proto_register_field_array(proto_isi, hf, array_length(hf));
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register_dissector("isi.network", dissect_isi_network, proto_isi);
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}
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/* would be nice if wireshark could handle unicode... */
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static void* utf16_to_ascii(char *in, guint16 len) {
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char *out = malloc(len+1);
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int i;
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for(i=0; i<len; i++) {
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out[i] = in[(i*2)+1];
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}
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out[len] = 0x00;
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return out;
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}
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static void dissect_isi_network_status(tvbuff_t *tvb, packet_info *pinfo, proto_item *item, proto_tree *tree) {
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guint8 len = tvb->length;
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int i;
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guint8 pkgcount = tvb_get_guint8(tvb, 0x02);
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proto_tree_add_item(tree, hf_isi_network_data_sub_pkgs, tvb, 0x02, 1, FALSE);
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size_t offset = 0x03; // subpackets start here
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for(i=0; i<pkgcount; i++) {
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guint8 sptype = tvb_get_guint8(tvb, offset+0);
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guint8 splen = tvb_get_guint8(tvb, offset+1);
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proto_item *subitem = proto_tree_add_text(tree, tvb, offset, splen, "Subpacket (%s)", val_to_str(sptype, isi_network_status_sub_id, "unknown: 0x%x"));
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proto_tree *subtree = proto_item_add_subtree(subitem, ett_isi_msg);
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proto_tree_add_item(subtree, hf_isi_network_status_sub_type, tvb, offset+0, 1, FALSE);
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proto_tree_add_item(subtree, hf_isi_network_status_sub_len, tvb, offset+1, 1, FALSE);
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offset += 2;
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switch(sptype) {
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case 0x00: // NET_REG_INFO_COMMON
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/* FIXME: TODO */
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break;
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case 0x09: // NET_GSM_REG_INFO
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proto_tree_add_item(subtree, hf_isi_network_status_sub_lac, tvb, offset+0, 2, FALSE);
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proto_tree_add_item(subtree, hf_isi_network_status_sub_cid, tvb, offset+4, 4, FALSE);
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/* FIXME: TODO */
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break;
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case 0xe3: ; // UNKNOWN
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/* FIXME: TODO: byte 0: message type (provider name / network name) ? */
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guint16 strlen = tvb_get_ntohs(tvb, offset+2);
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proto_tree_add_item(subtree, hf_isi_network_status_sub_msg_len, tvb, offset+2, 2, FALSE);
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char *utf16 = tvb_memdup(tvb, offset+4, strlen*2);
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char *ascii = utf16_to_ascii(utf16, strlen);
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proto_item *subitem = proto_tree_add_string(subtree, hf_isi_network_status_sub_msg, tvb, offset+4, strlen*2, ascii);
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break;
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default:
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break;
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}
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offset += splen - 2;
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}
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}
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static void dissect_isi_network_cell_info_ind(tvbuff_t *tvb, packet_info *pinfo, proto_item *item, proto_tree *tree) {
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guint8 len = tvb->length;
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int i;
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guint8 pkgcount = tvb_get_guint8(tvb, 0x02);
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proto_tree_add_item(tree, hf_isi_network_data_sub_pkgs, tvb, 0x02, 1, FALSE);
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size_t offset = 0x03;
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for(i=0; i<pkgcount; i++) {
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guint8 sptype = tvb_get_guint8(tvb, offset+0);
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guint8 splen = tvb_get_guint8(tvb, offset+1);
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proto_item *subitem = proto_tree_add_text(tree, tvb, offset, splen, "Subpacket (%s)", val_to_str(sptype, isi_network_cell_info_sub_id, "unknown: 0x%x"));
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proto_tree *subtree = proto_item_add_subtree(subitem, ett_isi_msg);
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proto_tree_add_item(subtree, hf_isi_network_cell_info_sub_type, tvb, offset+0, 1, FALSE);
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proto_tree_add_item(subtree, hf_isi_network_cell_info_sub_len, tvb, offset+1, 1, FALSE);
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offset += 2;
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switch(sptype) {
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case 0x50: // NET_EPS_CELL_INFO
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/* TODO: not yet implemented */
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expert_add_info_format(pinfo, item, PI_PROTOCOL, PI_WARN, "unsupported packet");
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break;
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case 0x46: // NET_GSM_CELL_INFO
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proto_tree_add_item(subtree, hf_isi_network_status_sub_lac, tvb, offset+0, 2, FALSE);
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proto_tree_add_item(subtree, hf_isi_network_status_sub_cid, tvb, offset+2, 4, FALSE);
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proto_tree_add_bitmask_text(subtree, tvb, offset+6, 4, "GSM Bands: ", "all bands, since none is selected", ett_isi_network_gsm_band_info, gsm_band_fields, FALSE, BMT_NO_FALSE | BMT_NO_TFS);
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proto_tree_add_item(subtree, hf_isi_network_cell_info_sub_operator, tvb, offset+10, 3, FALSE);
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/* TODO: analysis of the following 5 bytes (which were 0x00 in my dumps) */
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break;
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case 0x47: // NET_WCDMA_CELL_INFO
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/* TODO: not yet implemented */
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expert_add_info_format(pinfo, item, PI_PROTOCOL, PI_WARN, "unsupported packet");
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break;
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default:
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expert_add_info_format(pinfo, item, PI_PROTOCOL, PI_WARN, "unsupported packet");
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break;
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}
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offset += splen - 2;
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}
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}
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static void dissect_isi_network(tvbuff_t *tvb, packet_info *pinfo, proto_item *isitree) {
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proto_item *item = NULL;
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proto_tree *tree = NULL;
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guint8 cmd, code;
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if(isitree) {
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item = proto_tree_add_text(isitree, tvb, 0, -1, "Payload");
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tree = proto_item_add_subtree(item, ett_isi_msg);
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proto_tree_add_item(tree, hf_isi_network_cmd, tvb, 0, 1, FALSE);
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cmd = tvb_get_guint8(tvb, 0);
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switch(cmd) {
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case 0x07:
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col_set_str(pinfo->cinfo, COL_INFO, "Network Selection Request");
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expert_add_info_format(pinfo, item, PI_PROTOCOL, PI_WARN, "unsupported packet");
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break;
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case 0x20:
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col_set_str(pinfo->cinfo, COL_INFO, "Network Ciphering Indication");
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expert_add_info_format(pinfo, item, PI_PROTOCOL, PI_WARN, "unsupported packet");
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break;
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case 0xE2:
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col_set_str(pinfo->cinfo, COL_INFO, "Network Status Indication");
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dissect_isi_network_status(tvb, pinfo, item, tree);
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break;
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case 0x42:
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col_set_str(pinfo->cinfo, COL_INFO, "Network Cell Info Indication");
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dissect_isi_network_cell_info_ind(tvb, pinfo, item, tree);
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break;
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default:
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col_set_str(pinfo->cinfo, COL_INFO, "unknown Network packet");
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expert_add_info_format(pinfo, item, PI_PROTOCOL, PI_WARN, "unsupported packet");
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break;
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}
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}
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}
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