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/* packet-oicq.c
* Routines for OICQ - IM software,popular in China - packet dissection
* (c) Copyright Secfire <secfire@gmail.com>
*
* OICQ is an IM software,which is popular in China. And,
* OICQ has more than 10 millions users at present.
* The Protocol showed in this file, is found by investigating OICQ's
* Packets as a black box.
*
* The OICQ client software is always changing,and the protocol of
* communication is also.
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
void proto_register_oicq(void);
void proto_reg_handoff_oicq(void);
static dissector_handle_t oicq_handle;
/*
Protocol Flag: 8bit unsigned
Sender Flag: 16bit unsigned
Command Number: 16bit unsigned
Sequence Number: 16bit unsigned
OICQ Number: 32bit unsigned
Data: Variable Length data
*
*/
/* By default, but can be completely different */
#define UDP_PORT_OICQ 8000 /* Not IANA registered */
static int proto_oicq;
static int hf_oicq_flag;
static int hf_oicq_version;
static int hf_oicq_command;
static int hf_oicq_seq;
static int hf_oicq_qqid;
static int hf_oicq_data;
static int ett_oicq;
static const value_string oicq_flag_vals[] = {
{ 0x02, "Oicq packet" },
{ 0, NULL }
};
static const value_string oicq_command_vals[] = {
{ 0x0001, "Log out" },
{ 0x0002, "Heart Message" },
{ 0x0004, "Update User information" },
{ 0x0005, "Search user" },
{ 0x0006, "Get User informationBroadcast" },
{ 0x0009, "Add friend no auth" },
{ 0x000a, "Delete user" },
{ 0x000b, "Add friend by auth" },
{ 0x000d, "Set status" },
{ 0x0012, "Confirmation of receiving message from server" },
{ 0x0016, "Send message" },
{ 0x0017, "Receive message" },
{ 0x0018, "Retrieve information" },
{ 0x001a, "Reserved " },
{ 0x001c, "Delete Me" },
{ 0x001d, "Request KEY" },
{ 0x0021, "Cell Phone" },
{ 0x0022, "Log in" },
{ 0x0026, "Get friend list" },
{ 0x0027, "Get friend online" },
{ 0x0029, "Cell PHONE" },
{ 0x0030, "Operation on group" },
{ 0x0031, "Log in test" },
{ 0x003c, "Group name operation" },
{ 0x003d, "Upload group friend" },
{ 0x003e, "MEMO Operation" },
{ 0x0058, "Download group friend" },
{ 0x005c, "Get level" },
{ 0x0062, "Request login" },
{ 0x0065, "Request extra information" },
{ 0x0067, "Signature operation" },
{ 0x0080, "Receive system message" },
{ 0x0081, "Get status of friend" },
{ 0x00b5, "Get friend's status of group" },
{ 0x03f7, "Withdraw message" },
{ 0, NULL }
};
/* dissect_oicq - dissects oicq packet data
* tvb - tvbuff for packet data (IN)
* pinfo - packet info
* proto_tree - resolved protocol tree
*/
static int
dissect_oicq(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
proto_tree *oicq_tree;
proto_item *ti;
int offset = 0;
/* Make sure this packet is for us. */
/* heuristic: OICQ iff (([0] == STX) && ([3/4] == <valid_command>) ) */
/* (Supposedly each OICQ message ends with an ETX so a test for */
/* same could also be part of the heuristic). */
if ( (try_val_to_str(tvb_get_uint8(tvb, 0), oicq_flag_vals) == NULL) ||
(try_val_to_str(tvb_get_ntohs(tvb, 3), oicq_command_vals) == NULL) )
return 0;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "OICQ");
col_set_str(pinfo->cinfo, COL_INFO, "OICQ Protocol ");
if (tree) {
ti = proto_tree_add_item(tree, proto_oicq, tvb, 0, -1, ENC_NA);
oicq_tree = proto_item_add_subtree(ti, ett_oicq);
proto_tree_add_item(oicq_tree, hf_oicq_flag, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(oicq_tree, hf_oicq_version, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(oicq_tree, hf_oicq_command, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(oicq_tree, hf_oicq_seq, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(oicq_tree, hf_oicq_qqid, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(oicq_tree, hf_oicq_data, tvb, offset, -1, ENC_ASCII);
}
return tvb_captured_length(tvb);
}
void
proto_register_oicq(void)
{
static hf_register_info hf[] = {
{ &hf_oicq_flag, {
"Flag", "oicq.flag", FT_UINT8, BASE_HEX,
VALS(oicq_flag_vals), 0, "Protocol Flag", HFILL }},
{ &hf_oicq_version, {
"Version", "oicq.version", FT_UINT16, BASE_HEX,
NULL, 0, "Version-zz", HFILL }},
{ &hf_oicq_command, {
"Command", "oicq.command", FT_UINT16, BASE_DEC,
VALS(oicq_command_vals), 0, NULL, HFILL }},
{ &hf_oicq_seq, {
"Sequence", "oicq.seq", FT_UINT16, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_oicq_qqid, {
"Data(OICQ Number,if sender is client)", "oicq.qqid", FT_UINT32, BASE_DEC,
NULL, 0, NULL, HFILL }},
{ &hf_oicq_data, {
"Data", "oicq.data", FT_STRING, BASE_NONE,
NULL, 0, NULL, HFILL }},
};
static int *ett[] = {
&ett_oicq,
};
proto_oicq = proto_register_protocol("OICQ - IM software, popular in China", "OICQ", "oicq");
proto_register_field_array(proto_oicq, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
oicq_handle = register_dissector("oicq", dissect_oicq, proto_oicq);
}
void
proto_reg_handoff_oicq(void)
{
dissector_add_uint_with_preference("udp.port", UDP_PORT_OICQ, oicq_handle);
}
/*
* Editor modelines - https://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:
*/
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