forked from osmocom/wireshark
![Laurent Deniel](/assets/img/avatar_default.png)
the following: It is now possible to enable/disable a particular protocol decoding (i.e. the protocol dissector is void or not). When a protocol is disabled, it is displayed as Data and of course, all linked sub-protocols are disabled as well. Disabling a protocol could be interesting: - in case of buggy dissectors - in case of wrong heuristics - for performance reasons - to decode the data as another protocol (TODO) Currently (if I am not wrong), all dissectors but NFS can be disabled (and dissectors that do not register protocols :-) I do not like the way the RPC sub-dissectors are disabled (in the sub-dissectors) since this could be done in the RPC dissector itself, knowing the sub-protocol hfinfo entry (this is why, I've not modified the NFS one yet). Two functions are added in proto.c : gboolean proto_is_protocol_enabled(int n); void proto_set_decoding(int n, gboolean enabled); and two MACROs which can be used in dissectors: OLD_CHECK_DISPLAY_AS_DATA(index, pd, offset, fd, tree) CHECK_DISPLAY_AS_DATA(index, tvb, pinfo, tree) See also the XXX in proto_dlg.c and proto.c around the new functions. svn path=/trunk/; revision=2267
229 lines
7.2 KiB
C
229 lines
7.2 KiB
C
/* packet-yhoo.c
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* Routines for yahoo messenger packet dissection
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* Copyright 1999, Nathan Neulinger <nneul@umr.edu>
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*
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* $Id: packet-yhoo.c,v 1.10 2000/08/13 14:09:15 deniel Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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* Copied from packet-tftp.c
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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 <stdio.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include <string.h>
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#include <glib.h>
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#include "packet.h"
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#include "packet-yhoo.h"
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static int proto_yhoo = -1;
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static int hf_yhoo_version = -1;
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static int hf_yhoo_len = -1;
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static int hf_yhoo_service = -1;
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static int hf_yhoo_connection_id = -1;
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static int hf_yhoo_magic_id = -1;
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static int hf_yhoo_unknown1 = -1;
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static int hf_yhoo_msgtype = -1;
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static int hf_yhoo_nick1 = -1;
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static int hf_yhoo_nick2 = -1;
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static int hf_yhoo_content = -1;
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static gint ett_yhoo = -1;
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#define TCP_PORT_YHOO 5050
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static const value_string yhoo_service_vals[] = {
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{YAHOO_SERVICE_LOGON, "Pager Logon"},
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{YAHOO_SERVICE_LOGOFF, "Pager Logoff"},
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{YAHOO_SERVICE_ISAWAY, "Is Away"},
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{YAHOO_SERVICE_ISBACK, "Is Back"},
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{YAHOO_SERVICE_IDLE, "Idle"},
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{YAHOO_SERVICE_MESSAGE, "Message"},
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{YAHOO_SERVICE_IDACT, "Activate Identity"},
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{YAHOO_SERVICE_IDDEACT, "Deactivate Identity"},
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{YAHOO_SERVICE_MAILSTAT, "Mail Status"},
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{YAHOO_SERVICE_USERSTAT, "User Status"},
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{YAHOO_SERVICE_NEWMAIL, "New Mail"},
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{YAHOO_SERVICE_CHATINVITE, "Chat Invitation"},
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{YAHOO_SERVICE_CALENDAR, "Calendar Reminder"},
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{YAHOO_SERVICE_NEWPERSONALMAIL, "New Personals Mail"},
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{YAHOO_SERVICE_NEWCONTACT, "New Friend"},
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{YAHOO_SERVICE_GROUPRENAME, "Group Renamed"},
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{YAHOO_SERVICE_ADDIDENT, "Add Identity"},
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{YAHOO_SERVICE_ADDIGNORE, "Add Ignore"},
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{YAHOO_SERVICE_PING, "Ping"},
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{YAHOO_SERVICE_SYSMESSAGE, "System Message"},
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{YAHOO_SERVICE_CONFINVITE, "Conference Invitation"},
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{YAHOO_SERVICE_CONFLOGON, "Conference Logon"},
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{YAHOO_SERVICE_CONFDECLINE, "Conference Decline"},
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{YAHOO_SERVICE_CONFLOGOFF, "Conference Logoff"},
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{YAHOO_SERVICE_CONFMSG, "Conference Message"},
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{YAHOO_SERVICE_CONFADDINVITE, "Conference Additional Invitation"},
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{YAHOO_SERVICE_CHATLOGON, "Chat Logon"},
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{YAHOO_SERVICE_CHATLOGOFF, "Chat Logoff"},
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{YAHOO_SERVICE_CHATMSG, "Chat Message"},
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{YAHOO_SERVICE_FILETRANSFER, "File Transfer"},
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{YAHOO_SERVICE_PASSTHROUGH2, "Passthrough 2"},
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{0, NULL}
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};
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static const value_string yhoo_msgtype_vals[] = {
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{YAHOO_MSGTYPE_NONE, "None"},
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{YAHOO_MSGTYPE_NORMAL, "Normal"},
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{YAHOO_MSGTYPE_BOUNCE, "Bounce"},
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{YAHOO_MSGTYPE_STATUS, "Status Update"},
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{YAHOO_MSGTYPE_OFFLINE, "Request Offline"},
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{0, NULL}
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};
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static gboolean
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dissect_yhoo(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
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{
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proto_tree *yhoo_tree, *ti;
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struct yahoo_rawpacket *pkt;
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if (!proto_is_protocol_enabled(proto_yhoo)) {
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return FALSE;
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}
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if (pi.srcport != TCP_PORT_YHOO && pi.destport != TCP_PORT_YHOO) {
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/* Not the Yahoo port - not a Yahoo Messenger packet. */
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return FALSE;
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}
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/* get at least a full packet structure */
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if ( !BYTES_ARE_IN_FRAME(offset, sizeof(struct yahoo_rawpacket)) ) {
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/* Not enough data captured; maybe it is a Yahoo
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Messenger packet, but it contains too little data to
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tell. */
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return FALSE;
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}
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if (memcmp(&pd[offset], "YPNS", 4) != 0 &&
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memcmp(&pd[offset], "YHOO", 4) != 0) {
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/* Not a Yahoo Messenger packet. */
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return FALSE;
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}
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pkt = (struct yahoo_rawpacket *) &pd[offset];
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if (check_col(fd, COL_PROTOCOL))
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col_add_str(fd, COL_PROTOCOL, "YHOO");
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if (check_col(fd, COL_INFO))
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col_add_fstr(fd, COL_INFO,
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"%s: %s",
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( strncmp(pkt->version, "YPNS", 4) == 0 ) ? "Request" : "Response",
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val_to_str(pletohl(pkt->service),
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yhoo_service_vals, "Unknown Service: %u")
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);
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if (tree) {
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ti = proto_tree_add_item(tree, proto_yhoo, NullTVB, offset, END_OF_FRAME, FALSE);
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yhoo_tree = proto_item_add_subtree(ti, ett_yhoo);
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proto_tree_add_string(yhoo_tree, hf_yhoo_version, NullTVB,
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offset, 8, pkt->version);
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proto_tree_add_uint(yhoo_tree, hf_yhoo_len, NullTVB,
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offset+8, 4, pletohl(pkt->len));
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proto_tree_add_uint(yhoo_tree, hf_yhoo_service, NullTVB,
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offset+12, 4, pletohl(pkt->service));
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proto_tree_add_uint(yhoo_tree, hf_yhoo_connection_id, NullTVB,
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offset+16, 4, pletohl(pkt->connection_id));
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proto_tree_add_uint(yhoo_tree, hf_yhoo_magic_id, NullTVB,
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offset+20, 4, pletohl(pkt->magic_id));
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proto_tree_add_uint(yhoo_tree, hf_yhoo_unknown1, NullTVB,
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offset+24, 4, pletohl(pkt->unknown1));
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proto_tree_add_uint(yhoo_tree, hf_yhoo_msgtype, NullTVB,
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offset+28, 4, pletohl(pkt->msgtype));
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proto_tree_add_string(yhoo_tree, hf_yhoo_nick1, NullTVB,
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offset+32, 36, pkt->nick1);
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proto_tree_add_string(yhoo_tree, hf_yhoo_nick2, NullTVB,
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offset+68, 36, pkt->nick2);
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proto_tree_add_string(yhoo_tree, hf_yhoo_content, NullTVB,
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offset+104, END_OF_FRAME, pkt->content);
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}
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return TRUE;
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}
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void
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proto_register_yhoo(void)
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{
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static hf_register_info hf[] = {
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{ &hf_yhoo_service, {
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"Service Type", "yhoo.service", FT_UINT32, BASE_DEC,
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VALS(yhoo_service_vals), 0, "Service Type" }},
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{ &hf_yhoo_msgtype, {
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"Message Type", "yhoo.msgtype", FT_UINT32, BASE_DEC,
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VALS(yhoo_msgtype_vals), 0, "Message Type Flags" }},
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{ &hf_yhoo_connection_id, {
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"Connection ID", "yhoo.connection_id", FT_UINT32, BASE_HEX,
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NULL, 0, "Connection ID" }},
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{ &hf_yhoo_magic_id, {
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"Magic ID", "yhoo.magic_id", FT_UINT32, BASE_HEX,
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NULL, 0, "Magic ID" }},
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{ &hf_yhoo_unknown1, {
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"Unknown 1", "yhoo.unknown1", FT_UINT32, BASE_HEX,
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NULL, 0, "Unknown 1" }},
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{ &hf_yhoo_len, {
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"Packet Length", "yhoo.len", FT_UINT32, BASE_DEC,
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NULL, 0, "Packet Length" }},
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{ &hf_yhoo_nick1, {
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"Real Nick (nick1)", "yhoo.nick1", FT_STRING, 0,
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NULL, 0, "Real Nick (nick1)" }},
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{ &hf_yhoo_nick2, {
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"Active Nick (nick2)", "yhoo.nick2", FT_STRING, 0,
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NULL, 0, "Active Nick (nick2)" }},
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{ &hf_yhoo_content, {
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"Content", "yhoo.content", FT_STRING, 0,
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NULL, 0, "Data portion of the packet" }},
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{ &hf_yhoo_version, {
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"Version", "yhoo.version", FT_STRING, 0,
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NULL, 0, "Packet version identifier" }},
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};
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static gint *ett[] = {
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&ett_yhoo,
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};
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proto_yhoo = proto_register_protocol("Yahoo Messenger Protocol", "yhoo");
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proto_register_field_array(proto_yhoo, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_yhoo(void)
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{
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old_heur_dissector_add("tcp", dissect_yhoo);
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}
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