2 * Routines for rsh packet disassembly
4 * Robert Tsai <rtsai@netapp.com>
5 * Liberally copied from packet-http.c, by Guy Harris <guy@alum.mit.edu>
7 * $Id: packet-rsh.c,v 1.12 2001/10/26 18:28:16 gram Exp $
9 * Ethereal - Network traffic analyzer
10 * By Gerald Combs <gerald@zing.org>
11 * Copyright 1998 Gerald Combs
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
35 #ifdef HAVE_SYS_TYPES_H
36 #include <sys/types.h>
43 static int proto_rsh = -1;
44 static int hf_rsh_response = -1;
45 static int hf_rsh_request = -1;
46 static gint ett_rsh = -1;
48 #define TCP_PORT_RSH 514
51 dissect_rsh(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
59 if (check_col(pinfo->fd, COL_PROTOCOL))
60 col_set_str(pinfo->fd, COL_PROTOCOL, "RSH");
61 if (check_col(pinfo->fd, COL_INFO)) {
62 /* Put the first line from the buffer into the summary. */
63 tvb_find_line_end(tvb, offset, -1, &next_offset);
64 linelen = next_offset - offset; /* include the line terminator */
67 * Make sure the line terminator isn't past the end of
68 * the captured data in the packet, so we don't throw
69 * an exception in the "tvb_get_ptr()" call.
71 if (linelen > (int) tvb_length(tvb))
72 linelen = tvb_length(tvb);
73 col_add_str(pinfo->fd, COL_INFO,
74 tvb_format_text(tvb, offset, linelen));
77 ti = proto_tree_add_item(tree, proto_rsh, tvb, offset,
78 tvb_length_remaining(tvb, offset), FALSE);
79 rsh_tree = proto_item_add_subtree(ti, ett_rsh);
82 * Process the packet data, a line at a time.
84 while (tvb_offset_exists(tvb, offset)) {
86 * Find the end of the line.
88 tvb_find_line_end(tvb, offset, -1, &next_offset);
93 proto_tree_add_text(rsh_tree, tvb, offset,
94 next_offset - offset, "%s",
95 tvb_format_text(tvb, offset, next_offset - offset));
99 if (pinfo->match_port == pinfo->destport)
100 proto_tree_add_boolean_hidden(rsh_tree,
101 hf_rsh_request, tvb, 0, 0, 1);
103 proto_tree_add_boolean_hidden(rsh_tree,
104 hf_rsh_response, tvb, 0, 0, 1);
109 proto_register_rsh(void)
112 static hf_register_info hf[] = {
114 { "Response", "rsh.response",
115 FT_BOOLEAN, BASE_NONE, NULL, 0x0,
116 "TRUE if rsh response", HFILL }},
118 { "Request", "rsh.request",
119 FT_BOOLEAN, BASE_NONE, NULL, 0x0,
120 "TRUE if rsh request", HFILL }},
123 static gint *ett[] = {
127 proto_rsh = proto_register_protocol("Remote Shell", "RSH", "rsh");
128 proto_register_field_array(proto_rsh, hf, array_length(hf));
129 proto_register_subtree_array(ett, array_length(ett));
133 proto_reg_handoff_rsh(void)
135 dissector_add("tcp.port", TCP_PORT_RSH, dissect_rsh, proto_rsh);