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packet-icq.c
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/* packet-icq.c
* Routines for ICQ packet disassembly
*
* $Id: packet-icq.c,v 1.8 1999/12/01 23:58:44 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Johan Feyaerts
* Copyright 1999 Johan Feyaerts
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* This file: by Kojak <kojak@bigwig.net>
*
* Decoding code ripped, reference to the original author at the
* appropriate place with the code itself.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <ctype.h>
#include <time.h>
#include <string.h>
#include <glib.h>
#ifdef NEED_SNPRINTF_H
# ifdef HAVE_STDARG_H
# include <stdarg.h>
# else
# include <varargs.h>
# endif
# include "snprintf.h"
#endif
#include "packet.h"
#include "resolv.h"
static int proto_icq = -1;
static int hf_icq_uin =-1;
static int hf_icq_cmd =-1;
static int hf_icq_sessionid =-1;
static int hf_icq_checkcode =-1;
static int hf_icq_decode = -1;
static int hf_icq_type = -1;
static gint ett_icq = -1;
static gint ett_icq_header = -1;
static gint ett_icq_decode = -1;
static gint ett_icq_body = -1;
static gint ett_icq_body_parts = -1;
enum { ICQ5_client, ICQ5_server};
void dissect_icqv5(const u_char *pd,
int offset,
frame_data *fd,
proto_tree *tree);
static void
dissect_icqv5Server(const u_char *pd,
int offset,
frame_data *fd,
proto_tree *tree,
guint32 pktsize);
/* Offsets of fields in the ICQ headers */
/* Can be 0x0002 or 0x0005 */
#define ICQ_VERSION 0x00
/* Is either one (server) or four (client) bytes long */
/* Client header offsets */
#define ICQ5_UNKNOWN 0x02
#define ICQ5_CL_UIN 0x06
#define ICQ5_CL_SESSIONID 0x0a
#define ICQ5_CL_CMD 0x0e
#define ICQ5_CL_SEQNUM1 0x10
#define ICQ5_CL_SEQNUM2 0x12
#define ICQ5_CL_CHECKCODE 0x14
#define ICQ5_CL_PARAM 0x18
#define ICQ5_CL_HDRSIZE 0x18
/* Server header offsets */
#define ICQ5_SRV_SESSIONID 0x03
#define ICQ5_SRV_CMD 0x07
#define ICQ5_SRV_SEQNUM1 0x09
#define ICQ5_SRV_SEQNUM2 0x0b
#define ICQ5_SRV_UIN 0x0d
#define ICQ5_SRV_CHECKCODE 0x11
#define ICQ5_SRV_PARAM 0x15
#define ICQ5_SRV_HDRSIZE 0x15
typedef struct _cmdcode {
char* descr;
int code;
} cmdcode;
#define SRV_ACK 0x000a
#define SRV_GO_AWAY 0x0028
#define SRV_NEW_UIN 0x0046
/* LOGIN_REPLY is very scary. It has a lot of fields that are undocumented
* Only the IP field makes sense */
#define SRV_LOGIN_REPLY 0x005a
#define SRV_LOGIN_REPLY_IP 0x000c
#define SRV_BAD_PASS 0x0064
#define SRV_USER_ONLINE 0x006e
#define SRV_USER_ONL_UIN 0x0000
#define SRV_USER_ONL_IP 0x0004
#define SRV_USER_ONL_PORT 0x0008
#define SRV_USER_ONL_REALIP 0x000c
#define SRV_USER_ONL_X1 0x0010
#define SRV_USER_ONL_STATUS 0x0011
#define SRV_USER_ONL_X2 0x0015
#define SRV_USER_OFFLINE 0x0078
#define SRV_USER_OFFLINE_UIN 0x0000
#define SRV_MULTI 0x0212
#define SRV_MULTI_NUM 0x0000
#define SRV_META_USER 0x03de
#define SRV_META_USER_SUBCMD 0x0000
#define SRV_META_USER_RESULT 0x0002
#define SRV_META_USER_DATA 0x0003
#define SRV_UPDATE_SUCCESS 0x01e0
#define SRV_UPDATE_FAIL 0x01ea
/*
* ICQv5 SRV_META_USER subcommands
*/
#define META_USER_FOUND 0x019a
#define META_ABOUT 0x00e6
#define META_USER_INFO 0x00c8
#define SRV_RECV_MESSAGE 0x00dc
#define SRV_RECV_MSG_UIN 0x0000
#define SRV_RECV_MSG_YEAR 0x0004
#define SRV_RECV_MSG_MONTH 0x0006
#define SRV_RECV_MSG_DAY 0x0007
#define SRV_RECV_MSG_HOUR 0x0008
#define SRV_RECV_MSG_MINUTE 0x0009
#define SRV_RECV_MSG_MSG_TYPE 0x000a
cmdcode serverMetaSubCmdCode[] = {
{ "META_USER_FOUND", META_USER_FOUND },
{ "META_ABOUT", META_ABOUT },
{ "META_USER_INFO", META_USER_INFO },
{ NULL, -1 }
};
cmdcode serverCmdCode[] = {
{ "SRV_ACK", SRV_ACK },
{ "SRV_GO_AWAY", SRV_GO_AWAY },
{ "SRV_NEW_UIN", SRV_NEW_UIN },
{ "SRV_LOGIN_REPLY", SRV_LOGIN_REPLY },
{ "SRV_BAD_PASS", SRV_BAD_PASS },
{ "SRV_USER_ONLINE", SRV_USER_ONLINE },
{ "SRV_USER_OFFLINE", SRV_USER_OFFLINE },
{ "SRV_QUERY", 130 },
{ "SRV_USER_FOUND", 140 },
{ "SRV_END_OF_SEARCH", 160 },
{ "SRV_NEW_USER", 180 },
{ "SRV_UPDATE_EXT", 200 },
{ "SRV_RECV_MESSAGE", SRV_RECV_MESSAGE },
{ "SRV_X2", 230 },
{ "SRV_NOT_CONNECTED", 240 },
{ "SRV_TRY_AGAIN", 250 },
{ "SRV_SYS_DELIVERED_MESS", 260 },
{ "SRV_INFO_REPLY", 280 },
{ "SRV_EXT_INFO_REPLY", 290 },
{ "SRV_STATUS_UPDATE", 420 },
{ "SRV_SYSTEM_MESSAGE", 450 },
{ "SRV_UPDATE_SUCCESS", SRV_UPDATE_SUCCESS },
{ "SRV_UPDATE_FAIL", SRV_UPDATE_FAIL },
{ "SRV_AUTH_UPDATE", 500 },
{ "SRV_MULTI_PACKET", SRV_MULTI },
{ "SRV_X1", 540 },
{ "SRV_RAND_USER", 590 },
{ "SRV_META_USER", SRV_META_USER },
{ NULL, -1 }
};
#define MSG_TEXT 0x0001
#define MSG_URL 0x0004
#define MSG_AUTH_REQ 0x0006
#define MSG_AUTH 0x0008
#define MSG_USER_ADDED 0x000c
#define MSG_EMAIL 0x000e
#define MSG_CONTACTS 0x0013
#define STATUS_ONLINE 0x00000000
#define STATUS_AWAY 0x00000001
#define STATUS_DND 0x00000013
#define STATUS_INVISIBLE 0x00000100
#define STATUS_OCCUPIED 0x00000010
#define STATUS_NA 0x00000004
#define STATUS_CHAT 0x00000020
/* Offsets for all packets measured from the start of the payload; i.e.
* with the ICQ header removed
*/
#define CMD_ACK 0x000a
#define CMD_ACK_RANDOM 0x0000
#define CMD_SEND_MSG 0x010E
#define CMD_SEND_MSG_RECV_UIN 0x0000
#define CMD_SEND_MSG_MSG_TYPE 0x0004
#define CMD_SEND_MSG_MSG_LEN 0x0006
#define CMD_SEND_MSG_MSG_TEXT 0x0008
/* The rest of the packet should be a null-term string */
#define CMD_LOGIN 0x03E8
#define CMD_LOGIN_TIME 0x0000
#define CMD_LOGIN_PORT 0x0004
#define CMD_LOGIN_PASSLEN 0x0008
#define CMD_LOGIN_PASSWD 0x000A
/* The password is variable length; so when we've decoded the passwd,
* the structure starts counting at 0 again.
*/
#define CMD_LOGIN_IP 0x0004
#define CMD_LOGIN_STATUS 0x0009
#define CMD_CONTACT_LIST 0x0406
#define CMD_CONTACT_LIST_NUM 0x0000
#define CMD_USER_META 0x064a
#define CMD_REG_NEW_USER 0x03fc
#define CMD_ACK_MESSAGES 0x0442
#define CMD_ACK_MESSAGES_RANDOM 0x0000
#define CMD_KEEP_ALIVE 0x042e
#define CMD_KEEP_ALIVE_RANDOM 0x0000
#define CMD_SEND_TEXT_CODE 0x0438
#define CMD_SEND_TEXT_CODE_LEN 0x0000
#define CMD_SEND_TEXT_CODE_TEXT 0x0002
#define CMD_QUERY_SERVERS 0x04ba
#define CMD_QUERY_ADDONS 0x04c4
#define CMD_STATUS_CHANGE 0x04d8
#define CMD_STATUS_CHANGE_STATUS 0x0000
#define CMD_ADD_TO_LIST 0x053c
#define CMD_ADD_TO_LIST_UIN 0x0000
#define CMD_RAND_SEARCH 0x056e
#define CMD_RAND_SEARCH_GROUP 0x0000
#define CMD_META_USER 0x064a
cmdcode msgTypeCode[] = {
{ "MSG_TEXT", MSG_TEXT },
{ "MSG_URL", MSG_URL },
{ "MSG_AUTH_REQ", MSG_AUTH_REQ },
{ "MSG_AUTH", MSG_AUTH },
{ "MSG_USER_ADDED", MSG_USER_ADDED},
{ "MSG_EMAIL", MSG_EMAIL},
{ "MSG_CONTACTS", MSG_CONTACTS},
{ NULL, 0}
};
cmdcode statusCode[] = {
{ "ONLINE", STATUS_ONLINE },
{ "AWAY", STATUS_AWAY },
{ "DND", STATUS_DND },
{ "INVISIBLE", STATUS_INVISIBLE },
{ "OCCUPIED", STATUS_OCCUPIED },
{ "NA", STATUS_NA },
{ "Free for Chat", STATUS_CHAT },
{ NULL, 0}
};
cmdcode clientCmdCode[] = {
{ "CMD_ACK", CMD_ACK },
{ "CMD_SEND_MESSAGE", CMD_SEND_MSG },
{ "CMD_LOGIN", CMD_LOGIN },
{ "CMD_REG_NEW_USER", CMD_REG_NEW_USER },
{ "CMD_CONTACT_LIST", 1030 },
{ "CMD_SEARCH_UIN", 1050 },
{ "CMD_SEARCH_USER", 1060 },
{ "CMD_KEEP_ALIVE", 1070 },
{ "CMD_SEND_TEXT_CODE", CMD_SEND_TEXT_CODE },
{ "CMD_ACK_MESSAGES", CMD_ACK_MESSAGES },
{ "CMD_LOGIN_1", 1100 },
{ "CMD_MSG_TO_NEW_USER", 1110 },
{ "CMD_INFO_REQ", 1120 },
{ "CMD_EXT_INFO_REQ", 1130 },
{ "CMD_CHANGE_PW", 1180 },
{ "CMD_NEW_USER_INFO", 1190 },
{ "CMD_UPDATE_EXT_INFO", 1200 },
{ "CMD_QUERY_SERVERS", CMD_QUERY_SERVERS },
{ "CMD_QUERY_ADDONS", CMD_QUERY_ADDONS },
{ "CMD_STATUS_CHANGE", CMD_STATUS_CHANGE },
{ "CMD_NEW_USER_1", 1260 },
{ "CMD_UPDATE_INFO", 1290 },
{ "CMD_AUTH_UPDATE", 1300 },
{ "CMD_KEEP_ALIVE2", 1310 },
{ "CMD_LOGIN_2", 1320 },
{ "CMD_ADD_TO_LIST", CMD_ADD_TO_LIST },
{ "CMD_RAND_SET", 1380 },
{ "CMD_RAND_SEARCH", CMD_RAND_SEARCH },
{ "CMD_META_USER", CMD_META_USER },
{ "CMD_INVIS_LIST", 1700 },
{ "CMD_VIS_LIST", 1710 },
{ "CMD_UPDATE_LIST", 1720 },
{ NULL, 0 }
};
/*
* All ICQv5 decryption code thanx to Sebastien Dault (daus01@gel.usherb.ca)
*/
const u_char
table_v5 [] = {
0x59, 0x60, 0x37, 0x6B, 0x65, 0x62, 0x46, 0x48, 0x53, 0x61, 0x4C, 0x59, 0x60, 0x57, 0x5B, 0x3D,
0x5E, 0x34, 0x6D, 0x36, 0x50, 0x3F, 0x6F, 0x67, 0x53, 0x61, 0x4C, 0x59, 0x40, 0x47, 0x63, 0x39,
0x50, 0x5F, 0x5F, 0x3F, 0x6F, 0x47, 0x43, 0x69, 0x48, 0x33, 0x31, 0x64, 0x35, 0x5A, 0x4A, 0x42,
0x56, 0x40, 0x67, 0x53, 0x41, 0x07, 0x6C, 0x49, 0x58, 0x3B, 0x4D, 0x46, 0x68, 0x43, 0x69, 0x48,
0x33, 0x31, 0x44, 0x65, 0x62, 0x46, 0x48, 0x53, 0x41, 0x07, 0x6C, 0x69, 0x48, 0x33, 0x51, 0x54,
0x5D, 0x4E, 0x6C, 0x49, 0x38, 0x4B, 0x55, 0x4A, 0x62, 0x46, 0x48, 0x33, 0x51, 0x34, 0x6D, 0x36,
0x50, 0x5F, 0x5F, 0x5F, 0x3F, 0x6F, 0x47, 0x63, 0x59, 0x40, 0x67, 0x33, 0x31, 0x64, 0x35, 0x5A,
0x6A, 0x52, 0x6E, 0x3C, 0x51, 0x34, 0x6D, 0x36, 0x50, 0x5F, 0x5F, 0x3F, 0x4F, 0x37, 0x4B, 0x35,
0x5A, 0x4A, 0x62, 0x66, 0x58, 0x3B, 0x4D, 0x66, 0x58, 0x5B, 0x5D, 0x4E, 0x6C, 0x49, 0x58, 0x3B,
0x4D, 0x66, 0x58, 0x3B, 0x4D, 0x46, 0x48, 0x53, 0x61, 0x4C, 0x59, 0x40, 0x67, 0x33, 0x31, 0x64,
0x55, 0x6A, 0x32, 0x3E, 0x44, 0x45, 0x52, 0x6E, 0x3C, 0x31, 0x64, 0x55, 0x6A, 0x52, 0x4E, 0x6C,
0x69, 0x48, 0x53, 0x61, 0x4C, 0x39, 0x30, 0x6F, 0x47, 0x63, 0x59, 0x60, 0x57, 0x5B, 0x3D, 0x3E,
0x64, 0x35, 0x3A, 0x3A, 0x5A, 0x6A, 0x52, 0x4E, 0x6C, 0x69, 0x48, 0x53, 0x61, 0x6C, 0x49, 0x58,
0x3B, 0x4D, 0x46, 0x68, 0x63, 0x39, 0x50, 0x5F, 0x5F, 0x3F, 0x6F, 0x67, 0x53, 0x41, 0x25, 0x41,
0x3C, 0x51, 0x54, 0x3D, 0x5E, 0x54, 0x5D, 0x4E, 0x4C, 0x39, 0x50, 0x5F, 0x5F, 0x5F, 0x3F, 0x6F,
0x47, 0x43, 0x69, 0x48, 0x33, 0x51, 0x54, 0x5D, 0x6E, 0x3C, 0x31, 0x64, 0x35, 0x5A, 0x00, 0x00 };
static char*
findcmd(cmdcode* c, int num)
{
static char buf[16];
cmdcode* p = c;
while (p->descr != NULL) {
if (p->code == num) {
return p->descr;
}
p++;
}
snprintf(buf, sizeof(buf), "(%x)", num);
return buf;
}
static char*
findMsgType(int num)
{
return findcmd(msgTypeCode, num);
}
static char*
findSubCmd(int num)
{
return findcmd(serverMetaSubCmdCode, num);
}
static char*
findClientCmd(int num)
{
return findcmd(clientCmdCode, num);
}
static char*
findServerCmd(int num)
{
return findcmd(serverCmdCode, num);
}
static char*
findStatus(int num)
{
return findcmd(statusCode, num);
}
static void
proto_tree_add_hexdump(proto_tree* t,
guint32 offset,
const u_char *data,
int size)
{
int i;
char buf[96];
int n;
int done = 0, line = 0;
int added = 0;
if (size==0)
return;
line = size / 16;
for (i=0;i<line;i++) {
added = 0;
done = 0;
for (n = i * 16; n < (i+1)*16; n++) {
added = sprintf(buf+done, "%02x", data[n]);
if ((n%8)==7)
added += sprintf(buf + done + added, " ");
else
added += sprintf(buf + done + added, " ");
done += added;
}
for (n = i * 16; n < (i+1)*16; n++) {
if (isprint(data[n]))
added = sprintf(buf + done, "%c", data[n]);
else
added = sprintf(buf + done, ".");
done += added;
}
proto_tree_add_text(t,
offset + i*16,
16,
buf);
}
if ((size%16)!=0) {
done = 0;
for (n = line * 16 ; n < size ; n++) {
added = sprintf(buf+done, "%02x", data[n]);
if ((n%8)==7)
added += sprintf(buf + done + added, " ");
else
added += sprintf(buf + done + added, " ");
done += added;
}
for (n = size ; (n%16)!=0;n++) {
added = 0;
if ((n%8)==7)
added += sprintf(buf + done + added, " ");
else
added += sprintf(buf + done + added, " ");
done += added;
}
for (n = line * 16; n < (line+1)*16; n++) {
added = 0;
if (n<size) {
if (isprint(data[n]))
added = sprintf(buf + done, "%c", data[n]);
else
added = sprintf(buf + done, ".");
} else {
added = sprintf(buf + done, " ");
}
done += added;
}
proto_tree_add_text(t,
offset + line*16,
size % 16,
buf);
}
}
static guint32
get_v5key(const u_char* pd, int len)
{
guint32 a1, a2, a3, a4, a5;
guint32 code, check, key;
code = pletohl(&pd[ICQ5_CL_CHECKCODE]);
a1 = code & 0x0001f000;
a2 = code & 0x07c007c0;
a3 = code & 0x003e0001;
a4 = code & 0xf8000000;
a5 = code & 0x0000083e;
a1 = a1 >> 0x0c;
a2 = a2 >> 0x01;
a3 = a3 << 0x0a;
a4 = a4 >> 0x10;
a5 = a5 << 0x0f;
check = a5 + a1 + a2 + a3 + a4;
key = len * 0x68656C6C;
key += check;
return key;
}
static void
decrypt_v5(u_char *bfr, guint32 size,guint32 key)
{
guint32 i;
guint32 k;
for (i=0x0a; i < size+3; i+=4 ) {
k = key+table_v5[i&0xff];
if ( i != 0x16 ) {
bfr[i] ^= (u_char)(k & 0xff);
bfr[i+1] ^= (u_char)((k & 0xff00)>>8);
}
if ( i != 0x12 ) {
bfr[i+2] ^= (u_char)((k & 0xff0000)>>16);
bfr[i+3] ^= (u_char)((k & 0xff000000)>>24);
}
}
}
static void
dissect_icqv2(const u_char *pd,
int offset,
frame_data *fd,
proto_tree *tree)
{
/* Not really implemented yet */
if (check_col(fd, COL_PROTOCOL)) {
col_add_str(fd, COL_PROTOCOL, "ICQv2 (UDP)");
}
if (check_col(fd, COL_INFO)) {
col_add_str(fd, COL_INFO, "ICQ Version 2 protocol");
}
}
/*
* Find first occurrence of ch in buf
* Buf is max size big.
*/
static char*
strnchr(const u_char* buf, u_char ch, int size)
{
int i;
u_char* p = (u_char*) buf;
for (i=0;(*p) && (*p!=ch) && (i<size); p++, i++)
;
if ((*p == '\0') || (i>=size))
return NULL;
return p;
}
static void
icqv5_decode_msgType(proto_tree* tree,
const unsigned char* pd, /* From start of messageType */
int offset,
int size)
{
proto_item* ti = NULL;
proto_tree* subtree = NULL;
int left = size;
char *msgText = NULL;
guint16 msgType = -1;
guint16 msgLen = -1;
int i,j,n;
static char* auth_req_field_descr[] = {
"Nickname",
"First name",
"Last name",
"Email address",
"Reason"};
static char* emain_field_descr[] = {
"Nickname",
"First name",
"Last name",
"Email address",
"Unknown",
"Text\n"
};
enum {OFF_MSG_TYPE=0,
OFF_MSG_LEN=2,
OFF_MSG_TEXT=4};
if (left >= sizeof(guint16)) {
msgType = pletohs(pd + OFF_MSG_TYPE);
left -= sizeof(guint16);
}
if (left >= sizeof(guint16)) {
msgLen = pletohs(pd + OFF_MSG_LEN);
left -= sizeof(guint16);
}
ti = proto_tree_add_text(tree,
offset ,
2,
"Type: %d (%s)", msgType, findMsgType(msgType));
/* Create a new subtree */
subtree = proto_item_add_subtree(ti, ett_icq_body_parts);
switch(msgType) {
case 0xffff: /* Field unknown */
break;
default:
fprintf(stderr, "Unknown msgType: %d (%04x)\n", msgType, msgType);
break;
case MSG_TEXT:
msgText = g_malloc(left + 1);
strncpy(msgText, pd + OFF_MSG_TEXT, left);
msgText[left] = '\0';
proto_tree_add_text(subtree,
offset + OFF_MSG_TEXT,
left,
"Msg: %s", msgText);
g_free(msgText);
break;
case MSG_URL:
/* Two parts, a description and the URL. Separeted by FE */
for (i=0;i<left;i++) {
if (pd[OFF_MSG_TEXT + i] == 0xfe)
break;
}
msgText = g_malloc(i + 1);
strncpy(msgText, pd + OFF_MSG_TEXT, i);
if (i==left)
msgText[i] = '\0';
else
msgText[i-1] = '\0';
proto_tree_add_text(subtree,
offset + OFF_MSG_TEXT,
i,
"Description: %s", msgText);
if (i==left)
break;
msgText = g_realloc(msgText, left - i);
strncpy(msgText, pd + OFF_MSG_TEXT + i + 1, left - i - 1);
msgText[left - i] = '\0';
proto_tree_add_text(subtree,
offset + OFF_MSG_TEXT,
i,
"URL: %s", msgText);
g_free(msgText);
break;
case MSG_EMAIL:
i = 0;
j = 0;
msgText = NULL;
for (n = 0; n < 6; n++) {
for (;
(i<left) && (pd[OFF_MSG_TEXT+i]!=0xfe);
i++)
;
if (i>j) {
msgText = g_realloc(msgText, i-j);
strncpy(msgText, pd + OFF_MSG_TEXT + j, i - j - 1);
msgText[i-j-1] = '\0';
proto_tree_add_text(subtree,
offset + OFF_MSG_TEXT + j,
i - j - 1,
"%s: %s", emain_field_descr[n], msgText);
} else {
proto_tree_add_text(subtree,
offset + OFF_MSG_TEXT + j,
0,
"%s: %s", emain_field_descr[n], "(empty)");
}
j = ++i;
}
if (msgText != NULL)
g_free(msgText);
break;
case MSG_AUTH:
{
/* Three bytes, first is a char signifying success */
unsigned char auth_suc = pd[OFF_MSG_LEN];
guint16 x1 = pd[OFF_MSG_LEN+1];
proto_tree_add_text(subtree,
offset + OFF_MSG_LEN,
1,
"Authorization: (%d) %s",auth_suc,
(auth_suc==0)?"Denied":"Allowed");
proto_tree_add_text(subtree,
offset + OFF_MSG_LEN + 1,
sizeof(guint16),
"x1: 0x%04x",x1);
break;
}
case MSG_AUTH_REQ:
/* Five parts, separated by FE */
i = 0;
j = 0;
msgText = NULL;
for (n = 0; n < 5; n++) {
for (;
(i<left) && (pd[OFF_MSG_TEXT+i]!=0xfe);
i++)
;
msgText = g_realloc(msgText, i-j);
strncpy(msgText, pd + OFF_MSG_TEXT + j, i - j - 1);
msgText[i-j-1] = '\0';
proto_tree_add_text(subtree,
offset + OFF_MSG_TEXT + j,
i - j - 1,
"%s: %s", auth_req_field_descr[n], msgText);
j = ++i;
}
if (msgText != NULL)
g_free(msgText);
break;
case MSG_USER_ADDED:
/* Four parts, separated by FE */
i = 0;
j = 0;
/* This is necessary, because g_realloc does not behave like
* g_malloc if the first parameter == NULL */
msgText = g_malloc(64);
for (n = 0; n < 4; n++) {
for (;
(i<left) && (pd[OFF_MSG_TEXT+i]!=0xfe);
i++)
;
msgText = g_realloc(msgText, i-j+1);
strncpy(msgText, pd + OFF_MSG_TEXT + j, i - j);
msgText[i-j] = '\0';
proto_tree_add_text(subtree,
offset + OFF_MSG_TEXT + j,
i - j,
"%s: %s", auth_req_field_descr[n], msgText);
j = ++i;
}
if (msgText != NULL)
g_free(msgText);
break;
case MSG_CONTACTS:
{
u_char* p = (u_char*) &pd[OFF_MSG_TEXT];
u_char* pprev = p;
int sz = 0; /* Size of the current element */
int n = 0; /* The nth element */
int done = 0; /* Number of chars processed */
u_char* msgText2 = NULL;
msgText = NULL;
/* Create a new subtree */
subtree = proto_item_add_subtree(ti, ett_icq_body_parts);
while (p!=NULL) {
p = strnchr(pprev, 0xfe, left);
if (p!=NULL)
sz = (int)(p - pprev);
else
sz = left;
msgText = g_realloc(msgText, sz+1);
strncpy(msgText, pprev, sz);
msgText[sz] = '\0';
if (n == 0) {
/* The first element is the number of Nick/UIN pairs follow */
proto_tree_add_text(subtree,
offset + OFF_MSG_TEXT + done,
sz,
"Number of pairs: %s", msgText);
n++;
} else if (p!=NULL) {
int svsz = sz;
left -= (sz+1);
pprev = p + 1;
p = strnchr(pprev, 0xfe, left);
if (p!=NULL)
sz = (int)(p - pprev);
else
sz = left;
msgText2 = g_malloc(sz+1);
strncpy(msgText2, pprev, sz);
msgText2[sz] = '\0';
proto_tree_add_text(subtree,
offset + OFF_MSG_TEXT + done,
sz + svsz + 2,
"%s:%s", msgText, msgText2);
n+=2;
g_free(msgText2);
}
left -= (sz+1);
pprev = p+1;
}
if (msgText != NULL)
g_free(msgText);
break;
}}
}
/*********************************
*
* Client commands
*
*********************************/
static void
icqv5_cmd_ack(proto_tree* tree,/* Tree to put the data in */
const u_char* pd, /* Packet content */
int offset, /* Offset from the start of the packet to the content */
int size) /* Number of chars left to do */
{
guint32 random = pletohl(pd + CMD_ACK_RANDOM);
proto_tree* subtree;
proto_item* ti;
if (tree){
ti = proto_tree_add_item_format(tree,
hf_icq_cmd,
offset,
4,
CMD_ACK,
"Body");
subtree = proto_item_add_subtree(ti, ett_icq_body);
proto_tree_add_text(subtree,
offset + CMD_ACK_RANDOM,
4,
"Random: 0x%08lx", random);
}
}
static void
icqv5_cmd_rand_search(proto_tree* tree, /* Tree to put the data in */
const u_char* pd, /* Packet content */
int offset, /* Offset from the start of the packet to the content */
int size) /* Number of chars left to do */
{
guint16 group = pletohs(pd + CMD_RAND_SEARCH_GROUP);
proto_tree* subtree;
proto_item* ti;
static const char* groups[] = {
"Name",
"General",
"Romance",
"Games",
"Students",
"20 Something",
"30 Something",
"40 Something",
"50 or worse",
"Man want women",
"Women want men"
};
if (tree){
ti = proto_tree_add_item_format(tree,
hf_icq_cmd,
offset,
4,
CMD_RAND_SEARCH,
"Body");
subtree = proto_item_add_subtree(ti, ett_icq_body);
if (group>0 && (group<=sizeof(groups)/sizeof(const char*)))
proto_tree_add_text(subtree,
offset + CMD_RAND_SEARCH_GROUP,
4,
"Group: (%d) %s", group, groups[group-1]);
else
proto_tree_add_text(subtree,
offset + CMD_RAND_SEARCH_GROUP,
4,
"Group: (%d)", group);
}
}
static void
icqv5_cmd_ack_messages(proto_tree* tree,/* Tree to put the data in */
const u_char* pd, /* Packet content */
int offset, /* Offset from the start of the packet to the content */
int size) /* Number of chars left to do */
{
guint32 random = pletohl(pd + CMD_ACK_MESSAGES_RANDOM);
proto_tree* subtree;
proto_item* ti;
if (tree){
ti = proto_tree_add_item_format(tree,
hf_icq_cmd,
offset,
4,
CMD_ACK_MESSAGES,
"Body");
subtree = proto_item_add_subtree(ti, ett_icq_body);
proto_tree_add_text(subtree,
offset + CMD_ACK_MESSAGES_RANDOM,
4,
"Random: 0x%08lx", random);
}
}
static void
icqv5_cmd_keep_alive(proto_tree* tree,/* Tree to put the data in */
const u_char* pd, /* Packet content */
int offset, /* Offset from the start of the packet to the content */
int size) /* Number of chars left to do */
{
guint32 random = pletohl(pd + CMD_KEEP_ALIVE_RANDOM);
proto_tree* subtree;
proto_item* ti;
if (tree){
ti = proto_tree_add_item_format(tree,
hf_icq_cmd,
offset,
4,
CMD_KEEP_ALIVE,
"Body");
subtree = proto_item_add_subtree(ti, ett_icq_body);
proto_tree_add_text(subtree,
offset + CMD_KEEP_ALIVE_RANDOM,
4,
"Random: 0x%08lx", random);
}
}
static void
icqv5_cmd_send_text_code(proto_tree* tree,/* Tree to put the data in */
const u_char* pd, /* Packet content */
int offset, /* Offset from the start of the packet to the content */
int size) /* Number of chars left to do */
{
proto_tree* subtree;
proto_item* ti;
gint16 len = -1;
guint16 x1 = -1;
char* text = NULL;
int left = size; /* The amount of data left to analyse */
if (left>=sizeof(gint16)) {
len = pletohs(pd+CMD_SEND_TEXT_CODE_LEN);
left -= sizeof(gint16);
}
if (len>=0) {
len = MIN(len, left);
text = g_malloc(len+1);
memcpy(text, pd + CMD_SEND_TEXT_CODE_TEXT, len);
text[len] = '\0';
left -= len;
}
if (left>=sizeof(gint16)) {
x1 = pletohs(pd + size - left);
left -= sizeof(gint16);
}
if (tree){
ti = proto_tree_add_item_format(tree,
hf_icq_cmd,
offset,
left,
CMD_KEEP_ALIVE,
"Body");
subtree = proto_item_add_subtree(ti, ett_icq_body);
proto_tree_add_text(subtree,
offset + CMD_SEND_TEXT_CODE_LEN,
2,
"Length: %d", len);
proto_tree_add_text(subtree,
offset + CMD_SEND_TEXT_CODE_TEXT,
len,
"Text: %s",text);
proto_tree_add_text(subtree,
offset + CMD_SEND_TEXT_CODE_TEXT + len,
2,
"X1: 0x%04x", x1);
}
if (text!=NULL)
g_free(text);
}
static void
icqv5_cmd_add_to_list(proto_tree* tree,/* Tree to put the data in */
const u_char* pd, /* Packet content */
int offset, /* Offset from the start of the packet to the content */
int size) /* Number of chars left to do */
{
guint32 uin = -1;
proto_tree* subtree;
proto_item* ti;
if (size>=4)