![Guy Harris](/assets/img/avatar_default.png)
dynamically-assigned "ett_" integer values, assigned by "proto_register_subtree_array()"; this: obviates the need to update "packet.h" whenever you add a new subtree type - you only have to add a call to "proto_register_subtree_array()" to a "register" routine and an array of pointers to "ett_", if they're not already there, and add a pointer to the new "ett_" variable to the array, if they are there; would allow run-time-loaded dissectors to allocate subtree types when they're loaded. svn path=/trunk/; revision=1043
144 lines
3.8 KiB
C
144 lines
3.8 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 1.6 1999/11/16 11:42:42 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@unicom.net>
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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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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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void
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dissect_nntp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
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{
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gchar *type;
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proto_tree *nntp_tree, *ti;
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const u_char *data, *dataend;
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const u_char *lineend, *eol;
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int linelen;
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int max_data = pi.captured_len - offset;
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data = &pd[offset];
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dataend = data + END_OF_FRAME;
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if (dataend > data + max_data)
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dataend = data + max_data;
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if (pi.match_port == pi.destport)
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type = "Request";
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else
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type = "Response";
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if (check_col(fd, COL_PROTOCOL))
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col_add_str(fd, COL_PROTOCOL, "NNTP");
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if (check_col(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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*/
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lineend = find_line_end(data, dataend, &eol);
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linelen = eol - data;
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col_add_fstr(fd, COL_INFO, "%s: %s", type,
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format_text(data, linelen));
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}
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if (tree) {
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ti = proto_tree_add_item(tree, proto_nntp, offset, END_OF_FRAME, NULL);
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nntp_tree = proto_item_add_subtree(ti, ett_nntp);
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if (pi.match_port == pi.destport) {
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proto_tree_add_item_hidden(nntp_tree, hf_nntp_request, 0, 0, TRUE);
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} else {
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proto_tree_add_item_hidden(nntp_tree, hf_nntp_response, 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 (data < dataend) {
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/*
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* Find the end of the line.
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*/
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lineend = find_line_end(data, dataend, &eol);
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linelen = lineend - data;
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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, offset, linelen, "%s",
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format_text(data, linelen));
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offset += linelen;
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data = lineend;
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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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