2 * Routines for IRC packet dissection
4 * $Id: packet-irc.c,v 1.14 2001/06/18 02:17:47 guy Exp $
6 * Ethereal - Network traffic analyzer
7 * By Gerald Combs <gerald@zing.org>
8 * Copyright 1998 Gerald Combs
10 * Copied from packet-tftp.c
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
33 #ifdef HAVE_SYS_TYPES_H
34 # include <sys/types.h>
37 #ifdef HAVE_NETINET_IN_H
38 # include <netinet/in.h>
45 static int proto_irc = -1;
46 static int hf_irc_request = -1;
47 static int hf_irc_response = -1;
48 static int hf_irc_command = -1;
50 static gint ett_irc = -1;
52 #define TCP_PORT_IRC 6667
53 /* good candidate for dynamic port specification */
56 dissect_irc_request(proto_tree *tree, tvbuff_t *tvb, int offset, int len,
57 const char *line, int linelen)
59 proto_tree_add_boolean_hidden(tree, hf_irc_request, tvb, offset, len,
61 proto_tree_add_text(tree, tvb, offset, len, "Request Line: %.*s",
66 dissect_irc_response(proto_tree *tree, tvbuff_t *tvb, int offset, int len,
67 const char *line, int linelen)
69 proto_tree_add_boolean_hidden(tree, hf_irc_response, tvb, offset, len,
71 proto_tree_add_text(tree, tvb, offset, len, "Response Line: %.*s",
76 dissect_irc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
78 proto_tree *irc_tree, *ti;
84 if (check_col(pinfo->fd, COL_PROTOCOL))
85 col_set_str(pinfo->fd, COL_PROTOCOL, "IRC");
87 if (check_col(pinfo->fd, COL_INFO))
89 col_set_str(pinfo->fd, COL_INFO,
90 (pinfo->match_port == pinfo->destport) ? "Request" : "Response");
95 ti = proto_tree_add_item(tree, proto_irc, tvb, 0,
96 tvb_length(tvb), FALSE);
97 irc_tree = proto_item_add_subtree(ti, ett_irc);
100 * Process the packet data, a line at a time.
102 while (tvb_offset_exists(tvb, offset))
105 * Find the end of the line.
107 linelen = tvb_find_line_end(tvb, offset, -1,
111 * Get a buffer that refers to the line (without
112 * the line terminator).
114 line = tvb_get_ptr(tvb, offset, linelen);
118 if (pinfo->match_port == pinfo->destport)
120 dissect_irc_request(irc_tree, tvb,
121 offset, next_offset - offset,
126 dissect_irc_response(irc_tree, tvb,
127 offset, next_offset - offset,
131 offset = next_offset;
137 proto_register_irc(void)
139 static hf_register_info hf[] = {
141 { "Response", "irc.response",
142 FT_BOOLEAN, BASE_NONE, NULL, 0x0,
143 "TRUE if IRC response", HFILL }},
146 { "Request", "irc.request",
147 FT_BOOLEAN, BASE_NONE, NULL, 0x0,
148 "TRUE if IRC request", HFILL }},
151 { "Command", "irc.command",
152 FT_STRING, BASE_NONE, NULL, 0x0,
153 "Command associated with request", HFILL }}
156 static gint *ett[] = {
159 proto_irc = proto_register_protocol("Internet Relay Chat", "IRC", "irc");
160 proto_register_field_array(proto_irc, hf, array_length(hf));
161 proto_register_subtree_array(ett, array_length(ett));
165 proto_reg_handoff_irc(void)
167 dissector_add("tcp.port", TCP_PORT_IRC, dissect_irc, proto_irc);