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/* isi-ss.c
* Dissector for ISI's General Stack Server resource
* Copyright 2010, Sebastian Reichel <sre@ring0.de>
* Copyright 2010, Tyson Key <tyson.key@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include <epan/prefs.h>
#include <epan/packet.h>
#include "packet-isi.h"
#include "isi-gss.h"
static const value_string isi_gss_message_id[] = {
{0x00, "GSS_CS_SERVICE_REQ"},
{0x01, "GSS_CS_SERVICE_RESP"},
{0x02, "GSS_CS_SERVICE_FAIL_RESP"},
{0xF0, "COMMON_MESSAGE"},
};
static const value_string isi_gss_subblock[] = {
{0x0B, "GSS_RAT_INFO"},
};
static const value_string isi_gss_operation[] = {
{0x0E, "GSS_SELECTED_RAT_WRITE"},
{0x9C, "GSS_SELECTED_RAT_READ"},
};
static const value_string isi_gss_cause[] = {
{0x01, "GSS_SERVICE_FAIL"},
{0x02, "GSS_SERVICE_NOT_ALLOWED"},
{0x03, "GSS_SERVICE_FAIL_CS_INACTIVE"},
};
static const value_string isi_gss_common_message_id[] = {
{0x01, "COMM_SERVICE_NOT_IDENTIFIED_RESP"},
{0x12, "COMM_ISI_VERSION_GET_REQ"},
{0x13, "COMM_ISI_VERSION_GET_RESP"},
{0x14, "COMM_ISA_ENTITY_NOT_REACHABLE_RESP"},
};
static dissector_handle_t isi_gss_handle;
static void dissect_isi_gss(tvbuff_t *tvb, packet_info *pinfo, proto_item *tree);
static gint32 hf_isi_gss_message_id = -1;
static gint32 hf_isi_gss_subblock = -1;
static gint32 hf_isi_gss_operation = -1;
static gint32 hf_isi_gss_subblock_count = -1;
static gint32 hf_isi_gss_cause = -1;
static gint32 hf_isi_gss_common_message_id = -1;
void proto_reg_handoff_isi_gss(void) {
static gboolean initialized=FALSE;
if (!initialized) {
isi_gss_handle = create_dissector_handle(dissect_isi_gss, proto_isi);
dissector_add("isi.resource", 0x32, isi_gss_handle);
}
}
void proto_register_isi_gss(void) {
static hf_register_info hf[] = {
{ &hf_isi_gss_message_id,
{ "Message ID", "isi.gss.msg_id", FT_UINT8, BASE_HEX, isi_gss_message_id, 0x0, "Message ID", HFILL }},
{ &hf_isi_gss_subblock,
{ "Subblock", "isi.gss.subblock", FT_UINT8, BASE_HEX, isi_gss_subblock, 0x0, "Subblock", HFILL }},
{ &hf_isi_gss_operation,
{ "Operation", "isi.gss.operation", FT_UINT8, BASE_HEX, isi_gss_operation, 0x0, "Operation", HFILL }},
{ &hf_isi_gss_subblock_count,
{ "Subblock Count", "isi.gss.subblock_count", FT_UINT8, BASE_DEC, NULL, 0x0, "Subblock Count", HFILL }},
{ &hf_isi_gss_cause,
{ "Cause", "isi.gss.cause", FT_UINT8, BASE_HEX, isi_gss_cause, 0x0, "Cause", HFILL }},
{ &hf_isi_gss_common_message_id,
{ "Common Message ID", "isi.gss.common.msg_id", FT_UINT8, BASE_HEX, isi_gss_common_message_id, 0x0, "Common Message ID", HFILL }},
};
proto_register_field_array(proto_isi, hf, array_length(hf));
register_dissector("isi.gss", dissect_isi_gss, proto_isi);
}
static void dissect_isi_gss(tvbuff_t *tvb, packet_info *pinfo, proto_item *isitree) {
proto_item *item = NULL;
proto_tree *tree = NULL;
guint8 cmd, code;
if(isitree) {
item = proto_tree_add_text(isitree, tvb, 0, -1, "Payload");
tree = proto_item_add_subtree(item, ett_isi_msg);
proto_tree_add_item(tree, hf_isi_gss_message_id, tvb, 0, 1, FALSE);
cmd = tvb_get_guint8(tvb, 0);
switch(cmd) {
case 0x00: /* GSS_CS_SERVICE_REQ */
proto_tree_add_item(tree, hf_isi_gss_operation, tvb, 1, 1, FALSE);
code = tvb_get_guint8(tvb, 1);
switch(code) {
case 0x0E:
col_set_str(pinfo->cinfo, COL_INFO, "Service Request: Radio Access Type Write");
break;
case 0x9C:
proto_tree_add_item(tree, hf_isi_gss_subblock_count, tvb, 2, 1, FALSE);
col_set_str(pinfo->cinfo, COL_INFO, "Service Request: Radio Access Type Read");
break;
default:
col_set_str(pinfo->cinfo, COL_INFO, "Service Request");
break;
}
break;
case 0x01: /* GSS_CS_SERVICE_RESP */
//proto_tree_add_item(tree, hf_isi_gss_service_type, tvb, 1, 1, FALSE);
code = tvb_get_guint8(tvb, 1);
switch(code) {
//case 0x9C:
// col_set_str(pinfo->cinfo, COL_INFO, "Network Information Request: Read Home PLMN");
// break;
default:
col_set_str(pinfo->cinfo, COL_INFO, "Service Response");
break;
}
break;
case 0x02: /* GSS_CS_SERVICE_FAIL_RESP */
proto_tree_add_item(tree, hf_isi_gss_operation, tvb, 1, 1, FALSE);
proto_tree_add_item(tree, hf_isi_gss_cause, tvb, 2, 1, FALSE);
code = tvb_get_guint8(tvb, 1);
switch(code) {
case 0x9C:
col_set_str(pinfo->cinfo, COL_INFO, "Service Failed Response: Radio Access Type Read");
break;
default:
col_set_str(pinfo->cinfo, COL_INFO, "Service Failed Response");
break;
}
break;
case 0xF0: /* COMMON_MESSAGE */
dissect_isi_common("General Stack Server", tvb, pinfo, tree);
break;
default:
col_set_str(pinfo->cinfo, COL_INFO, "Unknown type");
break;
}
}
}
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