2 * Routines for nntp packet dissection
3 * Copyright 1999, Richard Sharpe <rsharpe@ns.aus.com>
5 * $Id: packet-nntp.c,v 1.10 2000/05/31 05:07:26 guy Exp $
7 * Ethereal - Network traffic analyzer
8 * By Gerald Combs <gerald@zing.org>
9 * Copyright 1998 Gerald Combs
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
32 #ifdef HAVE_SYS_TYPES_H
33 # include <sys/types.h>
36 #ifdef HAVE_NETINET_IN_H
37 # include <netinet/in.h>
44 static int proto_nntp = -1;
45 static int hf_nntp_response = -1;
46 static int hf_nntp_request = -1;
48 static gint ett_nntp = -1;
50 #define TCP_PORT_NNTP 119
53 dissect_nntp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
56 proto_tree *nntp_tree, *ti;
57 const u_char *data, *dataend;
58 const u_char *lineend, *eol;
60 int max_data = pi.captured_len - offset;
63 dataend = data + END_OF_FRAME;
64 if (dataend > data + max_data)
65 dataend = data + max_data;
67 if (pi.match_port == pi.destport)
72 if (check_col(fd, COL_PROTOCOL))
73 col_add_str(fd, COL_PROTOCOL, "NNTP");
75 if (check_col(fd, COL_INFO)) {
77 * Put the first line from the buffer into the summary.
79 lineend = find_line_end(data, dataend, &eol);
81 col_add_fstr(fd, COL_INFO, "%s: %s", type,
82 format_text(data, linelen));
87 ti = proto_tree_add_item(tree, proto_nntp, NullTVB, offset, END_OF_FRAME, FALSE);
88 nntp_tree = proto_item_add_subtree(ti, ett_nntp);
90 if (pi.match_port == pi.destport) {
91 proto_tree_add_boolean_hidden(nntp_tree, hf_nntp_request, NullTVB, 0, 0, TRUE);
93 proto_tree_add_boolean_hidden(nntp_tree, hf_nntp_response, NullTVB, 0, 0, TRUE);
97 * Show the request or response as text, a line at a time.
98 * XXX - for requests, we could display the stuff after the
99 * first line, if any, based on what the request was, and
100 * for responses, we could display it based on what the
101 * matching request was, although the latter requires us to
102 * know what the matching request was....
104 while (data < dataend) {
106 * Find the end of the line.
108 lineend = find_line_end(data, dataend, &eol);
109 linelen = lineend - data;
114 proto_tree_add_text(nntp_tree, NullTVB, offset, linelen, "%s",
115 format_text(data, linelen));
123 proto_register_nntp(void)
126 static hf_register_info hf[] = {
128 { "Response", "nntp.response",
129 FT_BOOLEAN, BASE_NONE, NULL, 0x0,
130 "TRUE if NNTP response" }},
133 { "Request", "nntp.request",
134 FT_BOOLEAN, BASE_NONE, NULL, 0x0,
135 "TRUE if NNTP request" }}
137 static gint *ett[] = {
141 proto_nntp = proto_register_protocol("Network News Transfer Protocol",
143 proto_register_field_array(proto_nntp, hf, array_length(hf));
144 proto_register_subtree_array(ett, array_length(ett));
148 proto_reg_handoff_nntp(void)
150 dissector_add("tcp.port", TCP_PORT_NNTP, dissect_nntp);