forked from osmocom/wireshark
![Martin Mathieson](/assets/img/avatar_default.png)
Fifth batch (packet-rtp.c -> end). Will look at cleaning up and committing script afterwards. Change-Id: I8ed61dc941d98d3f7259a9d1f74e214eb7b4bfa2 Reviewed-on: https://code.wireshark.org/review/6052 Reviewed-by: Martin Mathieson <martin.r.mathieson@googlemail.com>
436 lines
15 KiB
C
436 lines
15 KiB
C
/* packet-scop.c
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* Owen Kirby <osk@exegin.com>
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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/prefs.h>
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#include "packet-tcp.h"
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/* Default SCOP Port numbers. */
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#define SCOP_DEFAULT_PORT 17755
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#define SCOP_DEFAULT_PORT_SECURED 17756
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void proto_register_scop(void);
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/* Structure to contain information from the SCoP packet. */
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typedef struct {
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guint8 transport;
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guint8 version;
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guint16 length;
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gboolean encrypted;
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guint8 service;
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guint8 type;
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} scop_packet;
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/* Header definitions for use with the TCP transport layer. */
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#define SCOP_HEADER_LENGTH 4
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#define SCOP_LENGTH_OFFSET 2
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/* SCoP Transport Types */
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#define SCOP_TRANSPORT_UDP 1
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#define SCOP_TRANSPORT_TCP 2
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#define SCOP_TRANSPORT_UDP_CCM 129
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#define SCOP_TRANSPORT_TCP_CCM 130
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#define SCOP_TRANSPORT_TCP_SSL 131
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/* Service Identifier Field */
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#define SCOP_SERVICE_SCOP 0x00
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#define SCOP_SERVICE_BRIDGE 0x01
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#define SCOP_SERVICE_GATEWAY 0x02
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/* SCoP Command Values */
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#define SCOP_CMD_HELLO 0x00
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#define SCOP_CMD_HELLO_RESP 0x01
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#define SCOP_CMD_HELLO_ACK 0x02
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#define SCOP_CMD_GOODBYE 0x04
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#define SCOP_CMD_GOODBYE_RESP 0x05
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#define SCOP_CMD_KEEPALIVE_PING 0x06
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#define SCOP_CMD_KEEPALIVE_PONG 0x07
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/* Bridge Command type values. */
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#define SCOP_BRIDGE_CMD 0x00
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#define SCOP_BRIDGE_MSG 0x01
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/* Function declarations */
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void proto_reg_handoff_scop(void);
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static void dissect_scop_zip (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static void dissect_scop_bridge (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static guint get_scop_length(packet_info *pinfo _U_, tvbuff_t *tvb, int offset);
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/* Initialize protocol and registered fields */
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static int proto_scop = -1;
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static int hf_scop_transport = -1;
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static int hf_scop_version = -1;
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static int hf_scop_length = -1;
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static int hf_scop_service = -1;
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static int hf_scop_type = -1;
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static int hf_scop_status = -1;
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static gint ett_scop = -1;
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static const value_string scop_transports [] = {
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{ SCOP_TRANSPORT_UDP, "UDP Mode 1" },
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{ SCOP_TRANSPORT_TCP, "TCP Mode 2" },
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{ SCOP_TRANSPORT_UDP_CCM, "UDP Mode 1 with CCM* Security" },
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{ SCOP_TRANSPORT_TCP_CCM, "TCP Mode 2 with CCM* Security" },
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{ SCOP_TRANSPORT_TCP_SSL, "TCP Mode 3 with SSL/TSL Tunnel" },
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{ 0, NULL }
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};
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static const value_string scop_types [] = {
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{ SCOP_CMD_HELLO, "Hello" },
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{ SCOP_CMD_HELLO_RESP, "Hello Response" },
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{ SCOP_CMD_HELLO_ACK, "Hello Acknowledgment" },
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{ SCOP_CMD_GOODBYE, "Goodbye" },
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{ SCOP_CMD_GOODBYE_RESP, "Goodbye Response" },
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{ SCOP_CMD_KEEPALIVE_PING, "Keep Alive Ping" },
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{ SCOP_CMD_KEEPALIVE_PONG, "Keep Alive Pong" },
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{ 0, NULL }
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};
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static const value_string scop_services [] = {
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{ SCOP_SERVICE_SCOP, "SCoP" },
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{ SCOP_SERVICE_BRIDGE, "Bridge" },
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{ SCOP_SERVICE_GATEWAY, "Gateway" },
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{ 0, NULL }
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};
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static guint32 gPREF_scop_port = SCOP_DEFAULT_PORT;
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static guint32 gPREF_scop_port_secured = SCOP_DEFAULT_PORT_SECURED;
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/* Dissector handle */
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static dissector_handle_t data_handle;
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static dissector_handle_t ieee802154_handle;
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/*FUNCTION:------------------------------------------------------
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* NAME
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* dissect_scop
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* DESCRIPTION
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* ZigBee SCoP packet dissection routine for Wireshark.
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* PARAMETERS
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* tvbuff_t *tvb - pointer to buffer containing raw packet.
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* packet_info *pinfo - pointer to packet information fields
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* proto_tree *tree - pointer to data tree Wireshark uses to display packet.
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* RETURNS
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* void
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*---------------------------------------------------------------
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*/
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static int
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dissect_scop(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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tvbuff_t *next_tvb;
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proto_item *proto_root;
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proto_tree *scop_tree;
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guint offset = 0;
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scop_packet packet;
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memset(&packet, 0, sizeof(packet));
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/* Set the protocol name. */
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "SCoP");
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/* Clear the info column. */
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col_clear(pinfo->cinfo, COL_INFO);
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/* Create the protocol display tree. */
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proto_root = proto_tree_add_protocol_format(tree, proto_scop, tvb, 0, tvb_length(tvb),
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"ZigBee SCoP");
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scop_tree = proto_item_add_subtree(proto_root, ett_scop);
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/* Extract the SCoP Transport type. */
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packet.transport = tvb_get_guint8(tvb, offset);
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proto_tree_add_uint(scop_tree, hf_scop_transport, tvb, offset, 1, packet.transport);
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offset += 1;
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/* Extract the SCoP Version. */
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packet.version = tvb_get_guint8(tvb, offset);
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proto_tree_add_uint(scop_tree, hf_scop_version, tvb, offset, 1, packet.version);
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offset += 1;
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/* Extract the SCoP Packet length. */
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packet.length = tvb_get_ntohs(tvb, offset);
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proto_tree_add_uint(scop_tree, hf_scop_length, tvb, offset, 2, packet.length);
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offset += 2;
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if ( (packet.transport == SCOP_TRANSPORT_UDP_CCM)
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|| (packet.transport == SCOP_TRANSPORT_TCP_CCM)) {
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/* Decryption Failed. */
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return offset;
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}
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next_tvb = tvb;
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/* Extract the service type. */
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packet.service = tvb_get_guint8(next_tvb, offset);
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proto_tree_add_uint(scop_tree, hf_scop_service, next_tvb, offset, 1, packet.service);
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offset += 1;
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/* Call the appropriate helper routine to dissect based on the service type. */
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switch (packet.service) {
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case SCOP_SERVICE_SCOP:
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dissect_scop_zip(tvb_new_subset_remaining(next_tvb, offset), pinfo, scop_tree);
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break;
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case SCOP_SERVICE_BRIDGE:
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dissect_scop_bridge(tvb_new_subset_remaining(next_tvb, offset), pinfo, scop_tree);
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break;
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case SCOP_SERVICE_GATEWAY:
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/* Nothing yet defined for the gateway. Fall-Through. */
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default:
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/* Unknown Service Type. */
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call_dissector(data_handle, tvb_new_subset_remaining(next_tvb, offset), pinfo, tree);
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break;
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}
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return tvb_length(tvb);
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} /* dissect_scop() */
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/*FUNCTION:------------------------------------------------------
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* NAME
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* get_scop_length
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* DESCRIPTION
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* Returns the length of a SCoP packet. For use with the TCP
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* transport type.
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* PARAMETERS
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* packet_info *pinfo - pointer to packet information fields
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* tvbuff_t *tvb - pointer to buffer containing the packet.
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* int offset - beginning of packet.
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* RETURNS
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* guint - Length of SCoP packet
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*---------------------------------------------------------------
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*/
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static guint
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get_scop_length(packet_info *pinfo _U_, tvbuff_t *tvb, int offset)
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{
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/* Byte 0: Protocol Type.
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* Byte 1: Protocol Version.
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* Bytes 2-3: Packet Length (network order).
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*/
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return tvb_get_ntohs(tvb, offset + SCOP_LENGTH_OFFSET);
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} /* get_scop_length */
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/*FUNCTION:------------------------------------------------------
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* NAME
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* dissect_scop_tcp
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* DESCRIPTION
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* ZigBee SCoP packet dissection routine for Wireshark.
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* for use with TCP ports.
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* PARAMETERS
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* tvbuff_t *tvb - pointer to buffer containing raw packet.
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* packet_info *pinfo - pointer to packet information fields
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* proto_tree *tree - pointer to data tree Wireshark uses to display packet.
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* RETURNS
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* void
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*---------------------------------------------------------------
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*/
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static int
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dissect_scop_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
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{
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tcp_dissect_pdus(tvb, pinfo, tree, TRUE, SCOP_HEADER_LENGTH, get_scop_length, dissect_scop, data);
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return tvb_length(tvb);
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} /* dissect_scop_tcp */
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/*FUNCTION:------------------------------------------------------
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* NAME
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* dissect_scop_zip
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* DESCRIPTION
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* Intermediate dissector for the SCoP service type.
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* PARAMETERS
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* tvbuff_t *tvb - pointer to buffer containing raw packet.
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* packet_info *pinfo - pointer to packet information fields
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* proto_tree *tree - pointer to data tree Wireshark uses to display packet.
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* RETURNS
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* void
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*---------------------------------------------------------------
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*/
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static void
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dissect_scop_zip(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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guint offset = 0;
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guint8 type = tvb_get_guint8(tvb, offset);
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guint16 status;
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/* Display the Packet type*/
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proto_tree_add_uint(tree, hf_scop_type, tvb, offset, 1, type);
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proto_item_append_text(tree, ", %s", val_to_str_const(type, scop_types, "Reserved Type"));
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col_set_str(pinfo->cinfo, COL_INFO, val_to_str_const(type, scop_types, "Reserved Type"));
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offset += 2;
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if (type == SCOP_CMD_HELLO_RESP) {
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status = tvb_get_ntohs(tvb, 1);
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proto_tree_add_uint_format_value(tree, hf_scop_status, tvb, offset, 2, status, "%s", (status==0x0000)?"Success":"Failure");
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offset += 2;
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}
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/* If there are any bytes left over, pass them to the data dissector. */
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if (offset < tvb_length(tvb)) {
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tvbuff_t *payload_tvb = tvb_new_subset_remaining(tvb, offset);
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proto_tree *root = proto_tree_get_root(tree);
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call_dissector(data_handle, payload_tvb, pinfo, root);
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}
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} /* dissect_scop_zip() */
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/*FUNCTION:------------------------------------------------------
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* NAME
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* dissect_scop_bridge
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* DESCRIPTION
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* Intermediate dissector for the Bridge service type.
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* PARAMETERS
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* tvbuff_t *tvb - pointer to buffer containing raw packet.
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* packet_info *pinfo - pointer to packet information fields
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* proto_tree *tree - pointer to data tree Wireshark uses to display packet.
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* RETURNS
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* void
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*---------------------------------------------------------------
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*/
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static void
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dissect_scop_bridge(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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call_dissector(ieee802154_handle, tvb, pinfo, proto_tree_get_root(tree));
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} /* dissect_scop_bridge() */
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/*FUNCTION:------------------------------------------------------
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* NAME
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* proto_register_scop
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* DESCRIPTION
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* SCoP protocol registration.
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* PARAMETERS
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* none
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* RETURNS
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* void
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*---------------------------------------------------------------
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*/
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void proto_register_scop(void)
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{
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module_t *scop_module;
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static hf_register_info hf[] = {
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{ &hf_scop_transport,
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{ "Transport Type", "scop.transport", FT_UINT8, BASE_DEC, VALS(scop_transports), 0x0,
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"The type of transport used.", HFILL }},
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{ &hf_scop_version,
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{ "Version", "scop.version", FT_UINT8, BASE_DEC, NULL, 0x0,
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"The version of the sniffer.", HFILL }},
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{ &hf_scop_length,
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{ "Length", "scop.length", FT_UINT16, BASE_DEC, NULL, 0x0,
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NULL, HFILL }},
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{ &hf_scop_service,
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{ "Service Identifier", "scop.service", FT_UINT8, BASE_DEC, VALS(scop_services), 0x0,
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NULL, HFILL }},
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{ &hf_scop_type,
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{ "Packet Type", "scop.type", FT_UINT8, BASE_DEC, VALS(scop_types), 0x0,
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"Service-specific packet type.", HFILL }},
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{ &hf_scop_status,
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{ "Status", "scop.status", FT_UINT16, BASE_HEX, NULL, 0x0,
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"Status of the SCoP Command.", HFILL }}
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};
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static gint *ett[] = {
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&ett_scop
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};
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/* Register protocol name and description. */
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proto_scop = proto_register_protocol("ZigBee SCoP", "SCoP", "scop");
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/* Register header fields and subtrees. */
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proto_register_field_array(proto_scop, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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/* Register preferences module */
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scop_module = prefs_register_protocol(proto_scop, proto_reg_handoff_scop);
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/* Register preferences */
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prefs_register_uint_preference(scop_module, "port", "SCoP Port",
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"Set the port for SCoP\n",
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10, &gPREF_scop_port);
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prefs_register_uint_preference(scop_module, "port_secure", "SCoP Secured Port",
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"Set the port for secured SCoP\n",
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10, &gPREF_scop_port_secured);
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/* Register dissector with Wireshark. */
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new_register_dissector("scop.udp", dissect_scop, proto_scop);
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new_register_dissector("scop.tcp", dissect_scop_tcp, proto_scop);
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} /* proto_register_scop() */
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/*FUNCTION:------------------------------------------------------
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* NAME
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* proto_reg_handoff_scop
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* DESCRIPTION
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* Registers the zigbee dissector with Wireshark.
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* Will be called every time 'apply' is pressed in the preferences menu.
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* PARAMETERS
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* none
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* RETURNS
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* void
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*---------------------------------------------------------------
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*/
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void proto_reg_handoff_scop(void)
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{
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static gboolean inited = FALSE;
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static guint32 lastPort;
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static guint32 lastPort_secured;
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static dissector_handle_t scop_udp_handle;
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static dissector_handle_t scop_tcp_handle;
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if (!inited){
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scop_udp_handle = find_dissector("scop.udp");
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scop_tcp_handle = find_dissector("scop.tcp");
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ieee802154_handle = find_dissector("wpan_nofcs");
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data_handle = find_dissector("data");
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inited = TRUE;
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} else {
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dissector_delete_uint("udp.port", lastPort, scop_udp_handle);
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dissector_delete_uint("tcp.port", lastPort, scop_tcp_handle);
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dissector_delete_uint("udp.port", lastPort_secured, scop_udp_handle);
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dissector_delete_uint("tcp.port", lastPort_secured, scop_tcp_handle);
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}
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dissector_add_uint("udp.port", gPREF_scop_port, scop_udp_handle);
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dissector_add_uint("tcp.port", gPREF_scop_port, scop_tcp_handle);
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dissector_add_uint("udp.port", gPREF_scop_port_secured, scop_udp_handle);
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dissector_add_uint("tcp.port", gPREF_scop_port_secured, scop_tcp_handle);
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lastPort = gPREF_scop_port;
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lastPort_secured = gPREF_scop_port_secured;
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} /* proto_reg_handoff_scop */
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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