2000-04-13 21:03:56 +00:00
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/* packet-ddtp.c
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* Routines for DDTP (Dynamic DNS Tools Protocol) packet disassembly
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* see http://ddt.sourceforge.net/
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2000-05-28 17:04:47 +00:00
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* Olivier Abad <oabad@cybercable.fr>
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2000-04-13 21:03:56 +00:00
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*
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2000-11-19 08:54:37 +00:00
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* $Id: packet-ddtp.c,v 1.11 2000/11/19 08:53:56 guy Exp $
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2000-04-13 21:03:56 +00:00
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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 2000
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*
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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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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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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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/*#include <string.h>
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#include <ctype.h>
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#include <time.h>*/
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#include <glib.h>
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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 "packet.h"
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#include "dfilter.h"
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#include "packet-ddtp.h"
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static int proto_ddtp = -1;
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static int hf_ddtp_version = -1;
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static int hf_ddtp_encrypt = -1;
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static int hf_ddtp_hostid = -1;
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static int hf_ddtp_msgtype = -1;
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static int hf_ddtp_opcode = -1;
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static int hf_ddtp_ipaddr = -1;
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static int hf_ddtp_status = -1;
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static int ett_ddtp = -1;
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2000-06-10 18:08:17 +00:00
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#define UDP_PORT_DDTP 1052
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2000-04-13 21:03:56 +00:00
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static const value_string vals_ddtp_version[] = {
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{ DDTP_VERSION_ERROR, "Protocol Error" },
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{ DDTP_VERSION_4, "4" },
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{ DDTP_VERSION_5, "5" },
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{ 0, NULL}
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};
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static const value_string vals_ddtp_encrypt[] = {
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{ DDTP_ENCRYPT_ERROR, "Encryption Error" },
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{ DDTP_ENCRYPT_PLAINTEXT, "Plain text" },
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{ DDTP_ENCRYPT_BLOWFISH, "Blowfish" },
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{ 0, NULL}
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};
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static const value_string vals_ddtp_msgtype[] = {
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{ DDTP_MESSAGE_ERROR, "Message Error" },
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{ DDTP_UPDATE_QUERY, "Update Query" },
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{ DDTP_UPDATE_REPLY, "Update Reply" },
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{ DDTP_ALIVE_QUERY, "Alive Query" },
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{ DDTP_ALIVE_REPLY, "Alive Reply" },
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{ 0, NULL}
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};
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static const value_string vals_ddtp_opcode[] = {
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{ DDTP_MARK_ONLINE, "Mark online" },
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{ DDTP_MARK_OFFLINE, "Mark offline" },
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{ 0, NULL}
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};
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static const value_string vals_ddtp_status[] = {
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{ DDTP_UPDATE_SUCCEEDED, "Update succeeded" },
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{ DDTP_UPDATE_FAILED, "Update failed" },
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{ DDTP_INVALID_PASSWORD, "Invalid password" },
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{ DDTP_INVALID_ACCOUNT, "Invalid account" },
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{ DDTP_INVALID_OPCODE, "Invalid opcode" },
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{ 0, NULL}
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};
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2000-06-12 10:01:54 +00:00
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static void
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dissect_ddtp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_tree *ddtp_tree;
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proto_item *ti;
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2000-04-13 21:03:56 +00:00
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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
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CHECK_DISPLAY_AS_DATA(proto_ddtp, tvb, pinfo, tree);
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2000-06-12 10:01:54 +00:00
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pinfo->current_proto = "DDTP";
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if (check_col(pinfo->fd, COL_PROTOCOL)) {
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2000-04-13 21:03:56 +00:00
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/* Indicate what kind of message this is. */
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2000-11-19 08:54:37 +00:00
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col_set_str (pinfo->fd, COL_PROTOCOL, "DDTP");
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2000-04-13 21:03:56 +00:00
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}
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if (tree) {
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2000-06-12 10:01:54 +00:00
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ti = proto_tree_add_item(tree, proto_ddtp, tvb, 0,
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Allow either old-style (pre-tvbuff) or new-style (tvbuffified)
dissectors to be registered as dissectors for particular ports,
registered as heuristic dissectors, and registered as dissectors for
conversations, and have routines to be used both by old-style and
new-style dissectors to call registered dissectors.
Have the code that calls those dissectors translate the arguments as
necessary. (For conversation dissectors, replace
"find_conversation_dissector()", which just returns a pointer to the
dissector, with "old_try_conversation_dissector()" and
"try_conversation_dissector()", which actually call the dissector, so
that there's a single place at which we can do that translation. Also
make "dissector_lookup()" static and, instead of calling it and, if it
returns a non-null pointer, calling that dissector, just use
"old_dissector_try_port()" or "dissector_try_port()", for the same
reason.)
This allows some dissectors that took old-style arguments and
immediately translated them to new-style arguments to just take
new-style arguments; make them do so. It also allows some new-style
dissectors not to have to translate arguments before calling routines to
look up and call dissectors; make them not do so.
Get rid of checks for too-short frames in new-style dissectors - the
tvbuff code does those checks for you.
Give the routines to register old-style dissectors, and to call
dissectors from old-style dissectors, names beginning with "old_", with
the routines for new-style dissectors not having the "old_". Update the
dissectors that use those routines appropriately.
Rename "dissect_data()" to "old_dissect_data()", and
"dissect_data_tvb()" to "dissect_data()".
svn path=/trunk/; revision=2218
2000-08-07 03:21:25 +00:00
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tvb_length(tvb), FALSE);
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2000-04-13 21:03:56 +00:00
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ddtp_tree = proto_item_add_subtree(ti, ett_ddtp);
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2000-06-12 10:01:54 +00:00
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proto_tree_add_item(ddtp_tree, hf_ddtp_version, tvb, 0, 4, FALSE);
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proto_tree_add_item(ddtp_tree, hf_ddtp_encrypt, tvb, 4, 4, FALSE);
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proto_tree_add_item(ddtp_tree, hf_ddtp_hostid, tvb, 8, 4, FALSE);
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if (tvb_get_ntohl(tvb, 4) == DDTP_ENCRYPT_PLAINTEXT) {
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proto_tree_add_item(ddtp_tree, hf_ddtp_msgtype, tvb, 12, 4, FALSE);
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switch (tvb_get_ntohl(tvb, 12)) {
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2000-04-13 21:03:56 +00:00
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case DDTP_MESSAGE_ERROR :
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2000-06-12 10:01:54 +00:00
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if (check_col(pinfo->fd, COL_INFO))
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2000-11-19 08:54:37 +00:00
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col_set_str (pinfo->fd, COL_INFO, "Message Error");
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2000-04-13 21:03:56 +00:00
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break;
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case DDTP_UPDATE_QUERY :
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2000-06-12 10:01:54 +00:00
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if (check_col(pinfo->fd, COL_INFO))
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2000-11-19 08:54:37 +00:00
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col_set_str (pinfo->fd, COL_INFO, "Update Query");
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2000-06-12 10:01:54 +00:00
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proto_tree_add_item(ddtp_tree, hf_ddtp_opcode, tvb, 16, 4,
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FALSE);
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proto_tree_add_item(ddtp_tree, hf_ddtp_ipaddr, tvb, 20, 4,
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FALSE);
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2000-04-13 21:03:56 +00:00
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break;
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case DDTP_UPDATE_REPLY :
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2000-06-12 10:01:54 +00:00
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if (check_col(pinfo->fd, COL_INFO))
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2000-11-19 08:54:37 +00:00
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col_set_str (pinfo->fd, COL_INFO, "Update Reply");
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2000-06-12 10:01:54 +00:00
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proto_tree_add_item(ddtp_tree, hf_ddtp_status, tvb, 16, 4,
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FALSE);
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2000-04-13 21:03:56 +00:00
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break;
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case DDTP_ALIVE_QUERY :
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2000-06-12 10:01:54 +00:00
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if (check_col(pinfo->fd, COL_INFO))
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2000-11-19 08:54:37 +00:00
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col_set_str (pinfo->fd, COL_INFO, "Alive Query");
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2000-06-12 10:01:54 +00:00
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proto_tree_add_text(ddtp_tree, tvb, 16, 4, "Dummy : %u",
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tvb_get_ntohl(tvb, 16));
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2000-04-13 21:03:56 +00:00
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break;
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case DDTP_ALIVE_REPLY :
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2000-06-12 10:01:54 +00:00
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if (check_col(pinfo->fd, COL_INFO))
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2000-11-19 08:54:37 +00:00
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col_set_str (pinfo->fd, COL_INFO, "Alive Reply");
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2000-06-12 10:01:54 +00:00
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proto_tree_add_text(ddtp_tree, tvb, 16, 4, "Dummy : %u",
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tvb_get_ntohl(tvb, 16));
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2000-04-13 21:03:56 +00:00
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break;
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default :
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2000-06-12 10:01:54 +00:00
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if (check_col(pinfo->fd, COL_INFO))
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2000-11-19 08:54:37 +00:00
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col_set_str (pinfo->fd, COL_INFO, "Unknwon type");
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2000-06-12 10:01:54 +00:00
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proto_tree_add_text(ddtp_tree, tvb, 12, 4, "Unknown type : %u",
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tvb_get_ntohl(tvb, 12));
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2000-04-13 21:03:56 +00:00
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}
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}
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}
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}
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void
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proto_register_ddtp(void)
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{
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static hf_register_info hf_ddtp[] = {
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{ &hf_ddtp_version,
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{ "Version", "ddtp.version", FT_UINT32, BASE_DEC, VALS(vals_ddtp_version), 0x0,
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"Version" } },
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{ &hf_ddtp_encrypt,
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{ "Encryption", "ddtp.encrypt", FT_UINT32, BASE_DEC, VALS(vals_ddtp_encrypt), 0x0,
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"Encryption type" } },
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{ &hf_ddtp_hostid,
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{ "Hostid", "ddtp.hostid", FT_UINT32, BASE_DEC, NULL, 0x0,
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"Host ID" } },
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{ &hf_ddtp_msgtype,
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{ "Message type", "ddtp.msgtype", FT_UINT32, BASE_DEC, VALS(vals_ddtp_msgtype), 0x0,
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"Message Type" } },
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{ &hf_ddtp_opcode,
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{ "Opcode", "ddtp.opcode", FT_UINT32, BASE_DEC, VALS(vals_ddtp_opcode), 0x0,
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"Update query opcode" } },
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{ &hf_ddtp_ipaddr,
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{ "IP addres", "ddtp.ipaddr", FT_IPv4, BASE_NONE, NULL, 0x0,
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"IP address" } },
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{ &hf_ddtp_status,
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2000-04-13 21:16:22 +00:00
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{ "Status", "ddtp.status", FT_UINT32, BASE_DEC, VALS(vals_ddtp_status), 0x0,
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2000-04-13 21:03:56 +00:00
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"Update reply status" } }
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};
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static gint *ett[] = { &ett_ddtp };
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2000-04-13 21:16:22 +00:00
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proto_ddtp = proto_register_protocol("Dynamic DNS Tools Protocol", "ddtp");
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proto_register_field_array(proto_ddtp, hf_ddtp, array_length(hf_ddtp));
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2000-04-13 21:03:56 +00:00
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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_ddtp(void)
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{
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2000-06-10 18:08:17 +00:00
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dissector_add("udp.port", UDP_PORT_DDTP, dissect_ddtp);
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2000-04-13 21:03:56 +00:00
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}
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