forked from osmocom/wireshark
134 lines
3.6 KiB
C
134 lines
3.6 KiB
C
/* packet-rsh.c
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* Routines for rsh packet disassembly
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*
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* Robert Tsai <rtsai@netapp.com>
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* Liberally copied from packet-http.c, by Guy Harris <guy@alum.mit.edu>
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*
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* $Id: packet-rsh.c,v 1.20 2002/08/28 21:00:29 jmayer Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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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 <glib.h>
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#include <epan/packet.h>
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#include <epan/strutil.h>
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static int proto_rsh = -1;
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static int hf_rsh_response = -1;
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static int hf_rsh_request = -1;
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static gint ett_rsh = -1;
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#define TCP_PORT_RSH 514
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static void
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dissect_rsh(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_tree *rsh_tree;
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proto_item *ti;
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gint offset = 0;
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gint next_offset;
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int linelen;
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "RSH");
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if (check_col(pinfo->cinfo, COL_INFO)) {
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/* Put the first line from the buffer into the summary. */
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tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE);
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linelen = next_offset - offset; /* include the line terminator */
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/*
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* Make sure the line terminator isn't past the end of
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* the captured data in the packet, so we don't throw
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* an exception in the "tvb_get_ptr()" call.
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*/
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if (linelen > (int) tvb_length(tvb))
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linelen = tvb_length(tvb);
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col_add_str(pinfo->cinfo, COL_INFO,
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tvb_format_text(tvb, offset, linelen));
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}
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if (tree) {
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ti = proto_tree_add_item(tree, proto_rsh, tvb, offset, -1,
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FALSE);
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rsh_tree = proto_item_add_subtree(ti, ett_rsh);
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/*
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* Process the packet data, a line at a time.
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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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FALSE);
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/*
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* Put this line.
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*/
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proto_tree_add_text(rsh_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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if (pinfo->match_port == pinfo->destport)
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proto_tree_add_boolean_hidden(rsh_tree,
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hf_rsh_request, tvb, 0, 0, 1);
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else
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proto_tree_add_boolean_hidden(rsh_tree,
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hf_rsh_response, tvb, 0, 0, 1);
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}
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}
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void
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proto_register_rsh(void)
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{
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static hf_register_info hf[] = {
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{ &hf_rsh_response,
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{ "Response", "rsh.response",
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FT_BOOLEAN, BASE_NONE, NULL, 0x0,
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"TRUE if rsh response", HFILL }},
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{ &hf_rsh_request,
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{ "Request", "rsh.request",
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FT_BOOLEAN, BASE_NONE, NULL, 0x0,
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"TRUE if rsh request", HFILL }},
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};
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static gint *ett[] = {
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&ett_rsh,
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};
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proto_rsh = proto_register_protocol("Remote Shell", "RSH", "rsh");
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proto_register_field_array(proto_rsh, 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_rsh(void)
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{
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dissector_handle_t rsh_handle;
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rsh_handle = create_dissector_handle(dissect_rsh, proto_rsh);
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dissector_add("tcp.port", TCP_PORT_RSH, rsh_handle);
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}
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