forked from osmocom/wireshark
154 lines
4.0 KiB
C
154 lines
4.0 KiB
C
/* packet-nntp.c
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* Routines for nntp packet dissection
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* Copyright 1999, Richard Sharpe <rsharpe@ns.aus.com>
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*
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* $Id: packet-nntp.c,v 1.16 2000/11/19 08:54:00 guy 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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* 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 "strutil.h"
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static int proto_nntp = -1;
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static int hf_nntp_response = -1;
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static int hf_nntp_request = -1;
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static gint ett_nntp = -1;
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#define TCP_PORT_NNTP 119
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static void
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dissect_nntp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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gchar *type;
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proto_tree *nntp_tree;
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proto_item *ti;
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gint offset = 0;
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const u_char *line;
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gint next_offset;
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int linelen;
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CHECK_DISPLAY_AS_DATA(proto_nntp, tvb, pinfo, tree);
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if (pinfo->match_port == pinfo->destport)
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type = "Request";
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else
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type = "Response";
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pinfo->current_proto = "NNTP";
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if (check_col(pinfo->fd, COL_PROTOCOL))
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col_set_str(pinfo->fd, COL_PROTOCOL, "NNTP");
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if (check_col(pinfo->fd, COL_INFO)) {
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/*
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* Put the first line from the buffer into the summary
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* (but leave out the line terminator).
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*/
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linelen = tvb_find_line_end(tvb, offset, -1, &next_offset);
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line = tvb_get_ptr(tvb, offset, linelen);
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col_add_fstr(pinfo->fd, COL_INFO, "%s: %s", type,
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format_text(line, linelen));
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}
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if (tree) {
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ti = proto_tree_add_item(tree, proto_nntp, tvb, offset,
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tvb_length_remaining(tvb, offset), FALSE);
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nntp_tree = proto_item_add_subtree(ti, ett_nntp);
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if (pinfo->match_port == pinfo->destport) {
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proto_tree_add_boolean_hidden(nntp_tree,
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hf_nntp_request, tvb, 0, 0, TRUE);
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} else {
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proto_tree_add_boolean_hidden(nntp_tree,
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hf_nntp_response, tvb, 0, 0, TRUE);
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}
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/*
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* Show the request or response as text, a line at a time.
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* XXX - for requests, we could display the stuff after the
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* first line, if any, based on what the request was, and
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* for responses, we could display it based on what the
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* matching request was, although the latter requires us to
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* know what the matching request was....
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*/
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while (tvb_offset_exists(tvb, offset)) {
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/*
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* Find the end of the line.
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*/
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tvb_find_line_end(tvb, offset, -1, &next_offset);
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/*
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* Put this line.
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*/
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proto_tree_add_text(nntp_tree, tvb, offset,
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next_offset - offset, "%s",
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tvb_format_text(tvb, offset, next_offset - offset));
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offset = next_offset;
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}
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}
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}
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void
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proto_register_nntp(void)
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{
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static hf_register_info hf[] = {
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{ &hf_nntp_response,
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{ "Response", "nntp.response",
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FT_BOOLEAN, BASE_NONE, NULL, 0x0,
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"TRUE if NNTP response" }},
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{ &hf_nntp_request,
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{ "Request", "nntp.request",
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FT_BOOLEAN, BASE_NONE, NULL, 0x0,
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"TRUE if NNTP request" }}
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};
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static gint *ett[] = {
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&ett_nntp,
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};
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proto_nntp = proto_register_protocol("Network News Transfer Protocol",
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"nntp");
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proto_register_field_array(proto_nntp, 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_nntp(void)
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{
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dissector_add("tcp.port", TCP_PORT_NNTP, dissect_nntp);
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}
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