2000-08-12 05:41:10 +00:00
|
|
|
/* packet-rsh.c
|
|
|
|
* Routines for rsh packet disassembly
|
|
|
|
*
|
|
|
|
* Robert Tsai <rtsai@netapp.com>
|
|
|
|
* Liberally copied from packet-http.c, by Guy Harris <guy@alum.mit.edu>
|
|
|
|
*
|
2000-09-11 16:16:13 +00:00
|
|
|
* $Id: packet-rsh.c,v 1.4 2000/09/11 16:16:02 gram Exp $
|
2000-08-12 05:41:10 +00:00
|
|
|
*
|
|
|
|
* Ethereal - Network traffic analyzer
|
|
|
|
* By Gerald Combs <gerald@zing.org>
|
|
|
|
* Copyright 1998 Gerald Combs
|
|
|
|
*
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or
|
|
|
|
* modify it under the terms of the GNU General Public License
|
|
|
|
* as published by the Free Software Foundation; either version 2
|
|
|
|
* of the License, or (at your option) any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
2000-08-12 12:56:23 +00:00
|
|
|
#ifdef HAVE_CONFIG_H
|
2000-08-12 05:41:10 +00:00
|
|
|
#include "config.h"
|
2000-08-12 12:56:23 +00:00
|
|
|
#endif
|
2000-08-12 05:41:10 +00:00
|
|
|
|
|
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
|
|
#include <sys/types.h>
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#include <glib.h>
|
|
|
|
#include "packet.h"
|
2000-09-11 16:16:13 +00:00
|
|
|
#include "strutil.h"
|
2000-08-12 05:41:10 +00:00
|
|
|
|
|
|
|
static int proto_rsh = -1;
|
2000-08-12 12:56:23 +00:00
|
|
|
static int hf_rsh_response = -1;
|
|
|
|
static int hf_rsh_request = -1;
|
2000-08-12 05:41:10 +00:00
|
|
|
static gint ett_rsh = -1;
|
|
|
|
|
|
|
|
#define TCP_PORT_RSH 514
|
|
|
|
|
|
|
|
void
|
|
|
|
dissect_rsh(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
|
|
|
|
{
|
|
|
|
proto_item *ti;
|
|
|
|
proto_tree *rsh_tree;
|
|
|
|
const u_char *data, *dataend;
|
|
|
|
const u_char *lineend, *eol;
|
|
|
|
int linelen;
|
|
|
|
|
Add the "Edit:Protocols..." feature which currently only implements
the following:
It is now possible to enable/disable a particular protocol decoding
(i.e. the protocol dissector is void or not). When a protocol
is disabled, it is displayed as Data and of course, all linked
sub-protocols are disabled as well.
Disabling a protocol could be interesting:
- in case of buggy dissectors
- in case of wrong heuristics
- for performance reasons
- to decode the data as another protocol (TODO)
Currently (if I am not wrong), all dissectors but NFS can be disabled
(and dissectors that do not register protocols :-)
I do not like the way the RPC sub-dissectors are disabled (in the
sub-dissectors) since this could be done in the RPC dissector itself,
knowing the sub-protocol hfinfo entry (this is why, I've not modified
the NFS one yet).
Two functions are added in proto.c :
gboolean proto_is_protocol_enabled(int n);
void proto_set_decoding(int n, gboolean enabled);
and two MACROs which can be used in dissectors:
OLD_CHECK_DISPLAY_AS_DATA(index, pd, offset, fd, tree)
CHECK_DISPLAY_AS_DATA(index, tvb, pinfo, tree)
See also the XXX in proto_dlg.c and proto.c around the new functions.
svn path=/trunk/; revision=2267
2000-08-13 14:09:15 +00:00
|
|
|
OLD_CHECK_DISPLAY_AS_DATA(proto_rsh, pd, offset, fd, tree);
|
|
|
|
|
2000-08-12 05:41:10 +00:00
|
|
|
data = &pd[offset];
|
|
|
|
dataend = data + END_OF_FRAME;
|
|
|
|
|
|
|
|
if (check_col(fd, COL_PROTOCOL))
|
|
|
|
col_add_str(fd, COL_PROTOCOL, "RSH");
|
|
|
|
if (check_col(fd, COL_INFO)) {
|
|
|
|
/* Put the first line from the buffer into the summary. */
|
|
|
|
lineend = find_line_end(data, dataend, &eol);
|
|
|
|
linelen = lineend - data;
|
|
|
|
col_add_str(fd, COL_INFO, format_text(data, linelen));
|
|
|
|
}
|
|
|
|
if (tree) {
|
|
|
|
ti = proto_tree_add_item(tree, proto_rsh, NullTVB, offset,
|
|
|
|
END_OF_FRAME, FALSE);
|
|
|
|
rsh_tree = proto_item_add_subtree(ti, ett_rsh);
|
|
|
|
|
|
|
|
while (data < dataend) {
|
|
|
|
/*
|
|
|
|
* Find the end of the line.
|
|
|
|
*/
|
|
|
|
lineend = find_line_end(data, dataend, &eol);
|
|
|
|
linelen = lineend - data;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Put this line.
|
|
|
|
*/
|
|
|
|
proto_tree_add_text(rsh_tree, NullTVB, offset,
|
|
|
|
linelen, "%s", format_text(data, linelen));
|
|
|
|
offset += linelen;
|
|
|
|
data = lineend;
|
|
|
|
}
|
|
|
|
|
2000-08-12 12:56:23 +00:00
|
|
|
if (pi.match_port == pi.destport)
|
|
|
|
proto_tree_add_boolean_hidden(rsh_tree,
|
|
|
|
hf_rsh_request, NullTVB, 0, 0, 1);
|
|
|
|
else
|
|
|
|
proto_tree_add_boolean_hidden(rsh_tree,
|
|
|
|
hf_rsh_response, NullTVB, 0, 0, 1);
|
|
|
|
|
2000-08-12 05:41:10 +00:00
|
|
|
if (data < dataend)
|
|
|
|
old_dissect_data(&pd[offset], offset, fd, rsh_tree);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_register_rsh(void)
|
|
|
|
{
|
2000-08-12 12:56:23 +00:00
|
|
|
|
|
|
|
static hf_register_info hf[] = {
|
|
|
|
{ &hf_rsh_response,
|
|
|
|
{ "Response", "rsh.response",
|
|
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
|
|
|
|
"TRUE if rsh response" }},
|
|
|
|
{ &hf_rsh_request,
|
|
|
|
{ "Request", "rsh.request",
|
|
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
|
|
|
|
"TRUE if rsh request" }},
|
|
|
|
};
|
|
|
|
|
2000-08-12 05:41:10 +00:00
|
|
|
static gint *ett[] = {
|
|
|
|
&ett_rsh,
|
|
|
|
};
|
|
|
|
|
|
|
|
proto_rsh = proto_register_protocol("Remote Shell", "rsh");
|
2000-08-12 12:56:23 +00:00
|
|
|
proto_register_field_array(proto_rsh, hf, array_length(hf));
|
2000-08-12 05:41:10 +00:00
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_reg_handoff_rsh(void)
|
|
|
|
{
|
|
|
|
old_dissector_add("tcp.port", TCP_PORT_RSH, dissect_rsh);
|
|
|
|
}
|