forked from osmocom/wireshark
847 lines
26 KiB
C
847 lines
26 KiB
C
/* packet-dsi.c
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* Routines for dsi packet dissection
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* Copyright 2001, Randy McEoin <rmceoin@pe.com>
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*
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* $Id: packet-dsi.c,v 1.30 2004/02/25 09:31:05 guy 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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* Copied from packet-pop.c
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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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#include <glib.h>
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#include <epan/packet.h>
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#include "prefs.h"
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#include "packet-tcp.h"
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#include "packet-afp.h"
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/* The information in this module (DSI) comes from:
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AFP 2.1 & 2.2.pdf contained in AppleShare_IP_6.3_SDK
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available from http://www.apple.com
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The netatalk source code by Wesley Craig & Adrian Sun
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* What a Data Stream Interface packet looks like:
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* 0 32
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* |-------------------------------|
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* |flags |command| requestID |
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* |-------------------------------|
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* |error code/enclosed data offset|
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* |-------------------------------|
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* |total data length |
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* |-------------------------------|
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* |reserved field |
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* |-------------------------------|
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*/
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static int proto_dsi = -1;
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static int hf_dsi_flags = -1;
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static int hf_dsi_command = -1;
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static int hf_dsi_requestid = -1;
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static int hf_dsi_offset = -1;
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static int hf_dsi_error = -1;
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static int hf_dsi_length = -1;
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static int hf_dsi_reserved = -1;
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static gint ett_dsi = -1;
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static int hf_dsi_open_type = -1;
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static int hf_dsi_open_len = -1;
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static int hf_dsi_open_quantum = -1;
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static int hf_dsi_open_option = -1;
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static int hf_dsi_attn_flag = -1;
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static int hf_dsi_attn_flag_shutdown = -1;
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static int hf_dsi_attn_flag_crash = -1;
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static int hf_dsi_attn_flag_msg = -1;
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static int hf_dsi_attn_flag_reconnect = -1;
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static int hf_dsi_attn_flag_time = -1;
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static int hf_dsi_attn_flag_bitmap = -1;
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static gint ett_dsi_open = -1;
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static gint ett_dsi_attn = -1;
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static gint ett_dsi_attn_flag = -1;
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static const value_string dsi_attn_flag_vals[] = {
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{0x0, "Reserved" }, /* 0000 */
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{0x1, "Reserved" }, /* 0001 */
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{0x2, "Server message" }, /* 0010 */
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{0x3, "Server notification, cf. extended bitmap" }, /* 0011 */
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{0x4, "Server is shutting down, internal error" }, /* 0100 */
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{0x8, "Server is shutting down" }, /* 1000 */
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{0x9, "Server disconnects user" }, /* 1001 */
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{0x10,"Server is shutting down, message" }, /* 1010 */
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{0x11,"Server is shutting down, message,no reconnect"}, /* 1011 */
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{0, NULL } };
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static const value_string dsi_open_type_vals[] = {
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{0, "Server quantum" },
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{1, "Attention quantum" },
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{0, NULL } };
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/* status stuff same for asp and afp */
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static int hf_dsi_server_name = -1;
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static int hf_dsi_utf8_server_name_len = -1;
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static int hf_dsi_utf8_server_name = -1;
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static int hf_dsi_server_type = -1;
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static int hf_dsi_server_vers = -1;
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static int hf_dsi_server_uams = -1;
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static int hf_dsi_server_icon = -1;
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static int hf_dsi_server_directory = -1;
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static int hf_dsi_server_flag = -1;
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static int hf_dsi_server_flag_copyfile = -1;
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static int hf_dsi_server_flag_passwd = -1;
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static int hf_dsi_server_flag_no_save_passwd = -1;
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static int hf_dsi_server_flag_srv_msg = -1;
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static int hf_dsi_server_flag_srv_sig = -1;
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static int hf_dsi_server_flag_tcpip = -1;
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static int hf_dsi_server_flag_notify = -1;
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static int hf_dsi_server_flag_reconnect = -1;
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static int hf_dsi_server_flag_directory = -1;
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static int hf_dsi_server_flag_utf8_name = -1;
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static int hf_dsi_server_flag_fast_copy = -1;
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static int hf_dsi_server_signature = -1;
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static int hf_dsi_server_addr_len = -1;
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static int hf_dsi_server_addr_type = -1;
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static int hf_dsi_server_addr_value = -1;
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static gint ett_dsi_status = -1;
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static gint ett_dsi_uams = -1;
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static gint ett_dsi_vers = -1;
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static gint ett_dsi_addr = -1;
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static gint ett_dsi_addr_line = -1;
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static gint ett_dsi_directory = -1;
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static gint ett_dsi_utf8_name = -1;
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static gint ett_dsi_status_server_flag = -1;
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const value_string afp_server_addr_type_vals[] = {
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{1, "IP address" },
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{2, "IP+port address" },
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{3, "DDP address" },
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{4, "DNS name" },
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{5, "IP+port ssh tunnel" },
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{0, NULL } };
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/* end status stuff */
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/* desegmentation of DSI */
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static gboolean dsi_desegment = TRUE;
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static dissector_handle_t data_handle;
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static dissector_handle_t afp_handle;
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#define TCP_PORT_DSI 548
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#define DSI_BLOCKSIZ 16
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/* DSI flags */
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#define DSIFL_REQUEST 0x00
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#define DSIFL_REPLY 0x01
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#define DSIFL_MAX 0x01
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/* DSI Commands */
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#define DSIFUNC_CLOSE 1 /* DSICloseSession */
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#define DSIFUNC_CMD 2 /* DSICommand */
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#define DSIFUNC_STAT 3 /* DSIGetStatus */
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#define DSIFUNC_OPEN 4 /* DSIOpenSession */
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#define DSIFUNC_TICKLE 5 /* DSITickle */
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#define DSIFUNC_WRITE 6 /* DSIWrite */
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#define DSIFUNC_ATTN 8 /* DSIAttention */
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#define DSIFUNC_MAX 8 /* largest command */
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static const value_string flag_vals[] = {
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{DSIFL_REQUEST, "Request" },
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{DSIFL_REPLY, "Reply" },
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{0, NULL } };
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static const value_string func_vals[] = {
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{DSIFUNC_CLOSE, "CloseSession" },
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{DSIFUNC_CMD, "Command" },
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{DSIFUNC_STAT, "GetStatus" },
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{DSIFUNC_OPEN, "OpenSession" },
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{DSIFUNC_TICKLE, "Tickle" },
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{DSIFUNC_WRITE, "Write" },
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{DSIFUNC_ATTN, "Attention" },
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{0, NULL } };
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static gint
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dissect_dsi_open_session(tvbuff_t *tvb, proto_tree *dsi_tree, gint offset)
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{
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proto_tree *tree;
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proto_item *ti;
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guint8 type;
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guint8 len;
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ti = proto_tree_add_text(dsi_tree, tvb, offset, -1, "Open Session");
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tree = proto_item_add_subtree(ti, ett_dsi_open);
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type = tvb_get_guint8(tvb, offset);
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proto_tree_add_item(tree, hf_dsi_open_type, tvb, offset, 1, FALSE);
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offset++;
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len = tvb_get_guint8(tvb, offset);
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proto_tree_add_item(tree, hf_dsi_open_len, tvb, offset, 1, FALSE);
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offset++;
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if (type <= 1) {
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proto_tree_add_item(tree, hf_dsi_open_quantum, tvb, offset, 4, FALSE);
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}
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else {
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proto_tree_add_item(tree, hf_dsi_open_option, tvb, offset, len, FALSE);
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}
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offset += len;
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return offset;
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}
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static gint
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dissect_dsi_attention(tvbuff_t *tvb, proto_tree *dsi_tree, gint offset)
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{
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proto_tree *tree;
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proto_item *ti;
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guint16 flag;
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if (!tvb_reported_length_remaining(tvb,offset))
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return offset;
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flag = tvb_get_ntohs(tvb, offset);
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ti = proto_tree_add_text(dsi_tree, tvb, offset, -1, "Attention");
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tree = proto_item_add_subtree(ti, ett_dsi_attn);
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ti = proto_tree_add_item(tree, hf_dsi_attn_flag, tvb, offset, 2, FALSE);
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tree = proto_item_add_subtree(ti, ett_dsi_attn_flag);
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proto_tree_add_item(tree, hf_dsi_attn_flag_shutdown, tvb, offset, 2, FALSE);
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proto_tree_add_item(tree, hf_dsi_attn_flag_crash, tvb, offset, 2, FALSE);
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proto_tree_add_item(tree, hf_dsi_attn_flag_msg, tvb, offset, 2, FALSE);
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proto_tree_add_item(tree, hf_dsi_attn_flag_reconnect, tvb, offset, 2, FALSE);
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/* FIXME */
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if ((flag & 0xf000) != 0x3000)
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proto_tree_add_item(tree, hf_dsi_attn_flag_time, tvb, offset, 2, FALSE);
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else
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proto_tree_add_item(tree, hf_dsi_attn_flag_bitmap, tvb, offset, 2, FALSE);
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offset += 2;
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return offset;
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}
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/* -----------------------------
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from netatalk/etc/afpd/status.c
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*/
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static gint
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dissect_dsi_reply_get_status(tvbuff_t *tvb, proto_tree *tree, gint offset)
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{
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proto_tree *sub_tree;
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proto_item *ti;
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guint16 ofs;
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guint16 flag;
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guint16 sign_ofs = 0;
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guint16 adr_ofs = 0;
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guint16 dir_ofs = 0;
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guint16 utf_ofs = 0;
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guint8 nbe;
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guint8 len;
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guint8 i;
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if (!tree)
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return offset;
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ti = proto_tree_add_text(tree, tvb, offset, -1, "Get Status");
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tree = proto_item_add_subtree(ti, ett_dsi_status);
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ofs = tvb_get_ntohs(tvb, offset +AFPSTATUS_MACHOFF);
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proto_tree_add_text(tree, tvb, offset +AFPSTATUS_MACHOFF, 2, "Machine offset: %d", ofs);
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ofs = tvb_get_ntohs(tvb, offset +AFPSTATUS_VERSOFF);
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proto_tree_add_text(tree, tvb, offset +AFPSTATUS_VERSOFF, 2, "Version offset: %d", ofs);
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ofs = tvb_get_ntohs(tvb, offset +AFPSTATUS_UAMSOFF);
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proto_tree_add_text(tree, tvb, offset +AFPSTATUS_UAMSOFF, 2, "UAMS offset: %d", ofs);
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ofs = tvb_get_ntohs(tvb, offset +AFPSTATUS_ICONOFF);
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proto_tree_add_text(tree, tvb, offset +AFPSTATUS_ICONOFF, 2, "Icon offset: %d", ofs);
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ofs = offset +AFPSTATUS_FLAGOFF;
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ti = proto_tree_add_item(tree, hf_dsi_server_flag, tvb, ofs, 2, FALSE);
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sub_tree = proto_item_add_subtree(ti, ett_dsi_status_server_flag);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_copyfile , tvb, ofs, 2, FALSE);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_passwd , tvb, ofs, 2, FALSE);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_no_save_passwd, tvb, ofs, 2, FALSE);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_srv_msg , tvb, ofs, 2, FALSE);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_srv_sig , tvb, ofs, 2, FALSE);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_tcpip , tvb, ofs, 2, FALSE);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_notify , tvb, ofs, 2, FALSE);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_reconnect , tvb, ofs, 2, FALSE);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_directory , tvb, ofs, 2, FALSE);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_utf8_name , tvb, ofs, 2, FALSE);
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proto_tree_add_item(sub_tree, hf_dsi_server_flag_fast_copy , tvb, ofs, 2, FALSE);
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proto_tree_add_item(tree, hf_dsi_server_name, tvb, offset +AFPSTATUS_PRELEN, 1, FALSE);
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flag = tvb_get_ntohs(tvb, ofs);
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if ((flag & AFPSRVRINFO_SRVSIGNATURE)) {
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ofs = offset +AFPSTATUS_PRELEN +tvb_get_guint8(tvb, offset +AFPSTATUS_PRELEN) +1;
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if ((ofs & 1))
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ofs++;
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sign_ofs = tvb_get_ntohs(tvb, ofs);
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proto_tree_add_text(tree, tvb, ofs, 2, "Signature offset: %d", sign_ofs);
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sign_ofs += offset;
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if ((flag & AFPSRVRINFO_TCPIP)) {
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ofs += 2;
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adr_ofs = tvb_get_ntohs(tvb, ofs);
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proto_tree_add_text(tree, tvb, ofs, 2, "Network address offset: %d", adr_ofs);
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adr_ofs += offset;
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}
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if ((flag & AFPSRVRINFO_SRVDIRECTORY)) {
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ofs += 2;
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dir_ofs = tvb_get_ntohs(tvb, ofs);
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proto_tree_add_text(tree, tvb, ofs, 2, "Directory services offset: %d", dir_ofs);
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dir_ofs += offset;
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}
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if ((flag & AFPSRVRINFO_SRVUTF8)) {
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ofs += 2;
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utf_ofs = tvb_get_ntohs(tvb, ofs);
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proto_tree_add_text(tree, tvb, ofs, 2, "UTF8 server name offset: %d", utf_ofs);
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utf_ofs += offset;
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}
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}
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ofs = offset +tvb_get_ntohs(tvb, offset +AFPSTATUS_MACHOFF);
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if (ofs)
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proto_tree_add_item(tree, hf_dsi_server_type, tvb, ofs, 1, FALSE);
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ofs = offset +tvb_get_ntohs(tvb, offset +AFPSTATUS_VERSOFF);
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if (ofs) {
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nbe = tvb_get_guint8(tvb, ofs);
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ti = proto_tree_add_text(tree, tvb, ofs, 1, "Version list: %d", nbe);
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ofs++;
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sub_tree = proto_item_add_subtree(ti, ett_dsi_vers);
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for (i = 0; i < nbe; i++) {
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len = tvb_get_guint8(tvb, ofs);
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proto_tree_add_item(sub_tree, hf_dsi_server_vers, tvb, ofs, 1, FALSE);
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ofs += len + 1;
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}
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}
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ofs = offset +tvb_get_ntohs(tvb, offset +AFPSTATUS_UAMSOFF);
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if (ofs) {
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nbe = tvb_get_guint8(tvb, ofs);
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ti = proto_tree_add_text(tree, tvb, ofs, 1, "UAMS list: %d", nbe);
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ofs++;
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sub_tree = proto_item_add_subtree(ti, ett_dsi_uams);
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for (i = 0; i < nbe; i++) {
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len = tvb_get_guint8(tvb, ofs);
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proto_tree_add_item(sub_tree, hf_dsi_server_uams, tvb, ofs, 1, FALSE);
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ofs += len + 1;
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}
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}
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ofs = offset +tvb_get_ntohs(tvb, offset +AFPSTATUS_ICONOFF);
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if (ofs)
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proto_tree_add_item(tree, hf_dsi_server_icon, tvb, ofs, 256, FALSE);
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if (sign_ofs) {
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proto_tree_add_item(tree, hf_dsi_server_signature, tvb, sign_ofs, 16, FALSE);
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}
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if (adr_ofs) {
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proto_tree *adr_tree;
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char *tmp;
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const guint8 *ip;
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guint16 net;
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guint8 node;
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guint16 port;
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ofs = adr_ofs;
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nbe = tvb_get_guint8(tvb, ofs);
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ti = proto_tree_add_text(tree, tvb, ofs, 1, "Address list: %d", nbe);
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ofs++;
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adr_tree = proto_item_add_subtree(ti, ett_dsi_addr);
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for (i = 0; i < nbe; i++) {
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guint8 type;
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len = tvb_get_guint8(tvb, ofs);
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type = tvb_get_guint8(tvb, ofs +1);
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switch (type) {
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case 1: /* IP */
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ip = tvb_get_ptr(tvb, ofs+2, 4);
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ti = proto_tree_add_text(adr_tree, tvb, ofs, len, "ip: %s", ip_to_str(ip));
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break;
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case 2: /* IP + port */
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ip = tvb_get_ptr(tvb, ofs+2, 4);
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port = tvb_get_ntohs(tvb, ofs+6);
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ti = proto_tree_add_text(adr_tree, tvb, ofs, len, "ip %s:%d",ip_to_str(ip),port);
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break;
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case 3: /* DDP, atalk_addr_to_str want host order not network */
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net = tvb_get_ntohs(tvb, ofs+2);
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node = tvb_get_guint8(tvb, ofs +4);
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port = tvb_get_guint8(tvb, ofs +5);
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ti = proto_tree_add_text(adr_tree, tvb, ofs, len, "ddp: %u.%u:%u",
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net, node, port);
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break;
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case 4: /* DNS */
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case 5: /* SSH tunnel */
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if (len > 2) {
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tmp = tvb_get_string(tvb, ofs +2, len -2);
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ti = proto_tree_add_text(adr_tree, tvb, ofs, len, "%s: %s",
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(type==4)?"dns":"ssh tunnel", tmp);
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g_free(tmp);
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break;
|
|
}
|
|
else {
|
|
ti = proto_tree_add_text(adr_tree, tvb, ofs, len,"Malformed address type %d", type);
|
|
}
|
|
break;
|
|
default:
|
|
ti = proto_tree_add_text(adr_tree, tvb, ofs, len,"Unknow type : %d", type);
|
|
break;
|
|
}
|
|
len -= 2;
|
|
sub_tree = proto_item_add_subtree(ti,ett_dsi_addr_line);
|
|
proto_tree_add_item(sub_tree, hf_dsi_server_addr_len, tvb, ofs, 1, FALSE);
|
|
ofs++;
|
|
proto_tree_add_item(sub_tree, hf_dsi_server_addr_type, tvb, ofs, 1, FALSE);
|
|
ofs++;
|
|
proto_tree_add_item(sub_tree, hf_dsi_server_addr_value,tvb, ofs, len, FALSE);
|
|
ofs += len;
|
|
}
|
|
}
|
|
|
|
if (dir_ofs) {
|
|
ofs = dir_ofs;
|
|
nbe = tvb_get_guint8(tvb, ofs);
|
|
ti = proto_tree_add_text(tree, tvb, ofs, 1, "Directory services list: %d", nbe);
|
|
ofs++;
|
|
sub_tree = proto_item_add_subtree(ti, ett_dsi_directory);
|
|
for (i = 0; i < nbe; i++) {
|
|
len = tvb_get_guint8(tvb, ofs);
|
|
proto_tree_add_item(sub_tree, hf_dsi_server_directory, tvb, ofs, 1, FALSE);
|
|
ofs += len + 1;
|
|
}
|
|
}
|
|
if (utf_ofs) {
|
|
guint16 ulen;
|
|
char *tmp;
|
|
|
|
ofs = utf_ofs;
|
|
ulen = tvb_get_ntohs(tvb, ofs);
|
|
tmp = tvb_get_string(tvb, ofs + 2, ulen);
|
|
ti = proto_tree_add_text(tree, tvb, ofs, ulen + 2, "UTF8 server name: %s", tmp);
|
|
sub_tree = proto_item_add_subtree(ti, ett_dsi_utf8_name);
|
|
proto_tree_add_uint(sub_tree, hf_dsi_utf8_server_name_len, tvb, ofs, 2, ulen);
|
|
ofs += 2;
|
|
proto_tree_add_string(sub_tree, hf_dsi_utf8_server_name, tvb, ofs, ulen, tmp);
|
|
ofs += ulen;
|
|
g_free(tmp);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static void
|
|
dissect_dsi_packet(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_tree *dsi_tree;
|
|
proto_item *ti;
|
|
guint8 dsi_flags,dsi_command;
|
|
guint16 dsi_requestid;
|
|
gint32 dsi_code;
|
|
guint32 dsi_length;
|
|
guint32 dsi_reserved;
|
|
struct aspinfo aspinfo;
|
|
gint col_info;
|
|
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "DSI");
|
|
col_info = check_col(pinfo->cinfo, COL_INFO);
|
|
if (col_info)
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
dsi_flags = tvb_get_guint8(tvb, 0);
|
|
dsi_command = tvb_get_guint8(tvb, 1);
|
|
dsi_requestid = tvb_get_ntohs(tvb, 2);
|
|
dsi_code = tvb_get_ntohl(tvb, 4);
|
|
dsi_length = tvb_get_ntohl(tvb, 8);
|
|
dsi_reserved = tvb_get_ntohl(tvb, 12);
|
|
|
|
if (col_info) {
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s %s (%u)",
|
|
val_to_str(dsi_flags, flag_vals,
|
|
"Unknown flag (0x%02x)"),
|
|
val_to_str(dsi_command, func_vals,
|
|
"Unknown function (0x%02x)"),
|
|
dsi_requestid);
|
|
}
|
|
|
|
|
|
if (tree) {
|
|
ti = proto_tree_add_item(tree, proto_dsi, tvb, 0, -1, FALSE);
|
|
dsi_tree = proto_item_add_subtree(ti, ett_dsi);
|
|
|
|
proto_tree_add_uint(dsi_tree, hf_dsi_flags, tvb,
|
|
0, 1, dsi_flags);
|
|
proto_tree_add_uint(dsi_tree, hf_dsi_command, tvb,
|
|
1, 1, dsi_command);
|
|
proto_tree_add_uint(dsi_tree, hf_dsi_requestid, tvb,
|
|
2, 2, dsi_requestid);
|
|
switch (dsi_flags) {
|
|
|
|
case DSIFL_REQUEST:
|
|
proto_tree_add_int(dsi_tree, hf_dsi_offset, tvb,
|
|
4, 4, dsi_code);
|
|
break;
|
|
|
|
case DSIFL_REPLY:
|
|
proto_tree_add_int(dsi_tree, hf_dsi_error, tvb,
|
|
4, 4, dsi_code);
|
|
break;
|
|
}
|
|
proto_tree_add_uint_format(dsi_tree, hf_dsi_length, tvb,
|
|
8, 4, dsi_length,
|
|
"Length: %u bytes", dsi_length);
|
|
proto_tree_add_uint(dsi_tree, hf_dsi_reserved, tvb,
|
|
12, 4, dsi_reserved);
|
|
}
|
|
else
|
|
dsi_tree = tree;
|
|
switch (dsi_command) {
|
|
case DSIFUNC_OPEN:
|
|
if (tree) {
|
|
dissect_dsi_open_session(tvb, dsi_tree, DSI_BLOCKSIZ);
|
|
}
|
|
break;
|
|
case DSIFUNC_ATTN:
|
|
if (tree) {
|
|
dissect_dsi_attention(tvb, dsi_tree, DSI_BLOCKSIZ);
|
|
}
|
|
break;
|
|
case DSIFUNC_STAT:
|
|
if (tree && (dsi_flags == DSIFL_REPLY)) {
|
|
dissect_dsi_reply_get_status(tvb, dsi_tree, DSI_BLOCKSIZ);
|
|
}
|
|
break;
|
|
case DSIFUNC_CMD:
|
|
case DSIFUNC_WRITE:
|
|
{
|
|
tvbuff_t *new_tvb;
|
|
int len = tvb_reported_length_remaining(tvb,DSI_BLOCKSIZ);
|
|
|
|
aspinfo.reply = (dsi_flags == DSIFL_REPLY);
|
|
aspinfo.command = dsi_command;
|
|
aspinfo.seq = dsi_requestid;
|
|
aspinfo.code = dsi_code;
|
|
pinfo->private_data = &aspinfo;
|
|
proto_item_set_len(dsi_tree, DSI_BLOCKSIZ);
|
|
|
|
new_tvb = tvb_new_subset(tvb, DSI_BLOCKSIZ,-1,len);
|
|
call_dissector(afp_handle, new_tvb, pinfo, tree);
|
|
}
|
|
break;
|
|
default:
|
|
if (tree) {
|
|
call_dissector(data_handle,
|
|
tvb_new_subset(tvb, DSI_BLOCKSIZ, -1, -1),
|
|
pinfo, dsi_tree);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static guint
|
|
get_dsi_pdu_len(tvbuff_t *tvb, int offset)
|
|
{
|
|
guint32 plen;
|
|
guint8 dsi_flags,dsi_command;
|
|
|
|
dsi_flags = tvb_get_guint8(tvb, offset);
|
|
dsi_command = tvb_get_guint8(tvb, offset+ 1);
|
|
if ( dsi_flags > DSIFL_MAX || !dsi_command || dsi_command > DSIFUNC_MAX)
|
|
{
|
|
/* it's not a known dsi pdu start sequence */
|
|
return tvb_length_remaining(tvb, offset);
|
|
}
|
|
|
|
/*
|
|
* Get the length of the DSI packet.
|
|
*/
|
|
plen = tvb_get_ntohl(tvb, offset+8);
|
|
|
|
/*
|
|
* That length doesn't include the length of the header itself;
|
|
* add that in.
|
|
*/
|
|
return plen + 16;
|
|
}
|
|
|
|
static void
|
|
dissect_dsi(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
tcp_dissect_pdus(tvb, pinfo, tree, dsi_desegment, 12,
|
|
get_dsi_pdu_len, dissect_dsi_packet);
|
|
}
|
|
|
|
void
|
|
proto_register_dsi(void)
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_dsi_flags,
|
|
{ "Flags", "dsi.flags",
|
|
FT_UINT8, BASE_HEX, VALS(flag_vals), 0x0,
|
|
"Indicates request or reply.", HFILL }},
|
|
|
|
{ &hf_dsi_command,
|
|
{ "Command", "dsi.command",
|
|
FT_UINT8, BASE_DEC, VALS(func_vals), 0x0,
|
|
"Represents a DSI command.", HFILL }},
|
|
|
|
{ &hf_dsi_requestid,
|
|
{ "Request ID", "dsi.requestid",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Keeps track of which request this is. Replies must match a Request. IDs must be generated in sequential order.", HFILL }},
|
|
|
|
{ &hf_dsi_offset,
|
|
{ "Data offset", "dsi.data_offset",
|
|
FT_INT32, BASE_DEC, NULL, 0x0,
|
|
"Data offset", HFILL }},
|
|
|
|
{ &hf_dsi_error,
|
|
{ "Error code", "dsi.error_code",
|
|
FT_INT32, BASE_DEC, VALS(asp_error_vals), 0x0,
|
|
"Error code", HFILL }},
|
|
|
|
{ &hf_dsi_length,
|
|
{ "Length", "dsi.length",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Total length of the data that follows the DSI header.", HFILL }},
|
|
|
|
{ &hf_dsi_reserved,
|
|
{ "Reserved", "dsi.reserved",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"Reserved for future use. Should be set to zero.", HFILL }},
|
|
/* asp , afp */
|
|
{ &hf_dsi_utf8_server_name_len,
|
|
{ "Length", "dsi.utf8_server_name_len",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"UTF8 server name length.", HFILL }},
|
|
{ &hf_dsi_utf8_server_name,
|
|
{ "UTF8 Server name", "dsi.utf8_server_name",
|
|
FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"UTF8 Server name", HFILL }},
|
|
|
|
{ &hf_dsi_server_name,
|
|
{ "Server name", "dsi.server_name",
|
|
FT_UINT_STRING, BASE_NONE, NULL, 0x0,
|
|
"Server name", HFILL }},
|
|
|
|
{ &hf_dsi_server_type,
|
|
{ "Server type", "dsi.server_type",
|
|
FT_UINT_STRING, BASE_NONE, NULL, 0x0,
|
|
"Server type", HFILL }},
|
|
|
|
{ &hf_dsi_server_vers,
|
|
{ "AFP version", "dsi.server_vers",
|
|
FT_UINT_STRING, BASE_NONE, NULL, 0x0,
|
|
"AFP version", HFILL }},
|
|
|
|
{ &hf_dsi_server_uams,
|
|
{ "UAM", "dsi.server_uams",
|
|
FT_UINT_STRING, BASE_NONE, NULL, 0x0,
|
|
"UAM", HFILL }},
|
|
|
|
{ &hf_dsi_server_icon,
|
|
{ "Icon bitmap", "dsi.server_icon",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"Server icon bitmap", HFILL }},
|
|
|
|
{ &hf_dsi_server_directory,
|
|
{ "Directory service", "dsi.server_directory",
|
|
FT_UINT_STRING, BASE_NONE, NULL, 0x0,
|
|
"Server directory service", HFILL }},
|
|
|
|
{ &hf_dsi_server_signature,
|
|
{ "Server signature", "dsi.server_signature",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"Server signature", HFILL }},
|
|
|
|
{ &hf_dsi_server_flag,
|
|
{ "Flag", "dsi.server_flag",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"Server capabilities flag", HFILL }},
|
|
{ &hf_dsi_server_flag_copyfile,
|
|
{ "Support copyfile", "dsi.server_flag.copyfile",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_COPY,
|
|
"Server support copyfile", HFILL }},
|
|
{ &hf_dsi_server_flag_passwd,
|
|
{ "Support change password", "dsi.server_flag.passwd",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_PASSWD,
|
|
"Server support change password", HFILL }},
|
|
{ &hf_dsi_server_flag_no_save_passwd,
|
|
{ "Don't allow save password", "dsi.server_flag.no_save_passwd",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_NOSAVEPASSWD,
|
|
"Don't allow save password", HFILL }},
|
|
{ &hf_dsi_server_flag_srv_msg,
|
|
{ "Support server message", "dsi.server_flag.srv_msg",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_SRVMSGS,
|
|
"Support server message", HFILL }},
|
|
{ &hf_dsi_server_flag_srv_sig,
|
|
{ "Support server signature", "dsi.server_flag.srv_sig",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_SRVSIGNATURE,
|
|
"Support server signature", HFILL }},
|
|
{ &hf_dsi_server_flag_tcpip,
|
|
{ "Support TCP/IP", "dsi.server_flag.tcpip",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_TCPIP,
|
|
"Server support TCP/IP", HFILL }},
|
|
{ &hf_dsi_server_flag_notify,
|
|
{ "Support server notifications", "dsi.server_flag.notify",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_SRVNOTIFY,
|
|
"Server support notifications", HFILL }},
|
|
{ &hf_dsi_server_flag_reconnect,
|
|
{ "Support server reconnect", "dsi.server_flag.reconnect",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_SRVRECONNECT,
|
|
"Server support reconnect", HFILL }},
|
|
{ &hf_dsi_server_flag_directory,
|
|
{ "Support directory services", "dsi.server_flag.directory",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_SRVDIRECTORY,
|
|
"Server support directory services", HFILL }},
|
|
{ &hf_dsi_server_flag_utf8_name,
|
|
{ "Support UTF8 server name", "dsi.server_flag.utf8_name",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_SRVUTF8,
|
|
"Server support UTF8 server name", HFILL }},
|
|
{ &hf_dsi_server_flag_fast_copy,
|
|
{ "Support fast copy", "dsi.server_flag.fast_copy",
|
|
FT_BOOLEAN, 16, NULL, AFPSRVRINFO_FASTBOZO,
|
|
"Server support fast copy", HFILL }},
|
|
|
|
|
|
{ &hf_dsi_server_addr_len,
|
|
{ "Length", "dsi.server_addr.len",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Address length.", HFILL }},
|
|
|
|
{ &hf_dsi_server_addr_type,
|
|
{ "Type", "dsi.server_addr.type",
|
|
FT_UINT8, BASE_DEC, VALS(afp_server_addr_type_vals), 0x0,
|
|
"Address type.", HFILL }},
|
|
|
|
{ &hf_dsi_server_addr_value,
|
|
{ "Value", "dsi.server_addr.value",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"Address value", HFILL }},
|
|
|
|
{ &hf_dsi_open_type,
|
|
{ "Flags", "dsi.open_type",
|
|
FT_UINT8, BASE_DEC, VALS(dsi_open_type_vals), 0x0,
|
|
"Open session option type.", HFILL }},
|
|
|
|
{ &hf_dsi_open_len,
|
|
{ "Length", "dsi.open_len",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Open session option len", HFILL }},
|
|
|
|
{ &hf_dsi_open_quantum,
|
|
{ "Quantum", "dsi.open_quantum",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Server/Attention quantum", HFILL }},
|
|
|
|
{ &hf_dsi_open_option,
|
|
{ "Option", "dsi.open_option",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"Open session options (undecoded)", HFILL }},
|
|
|
|
{ &hf_dsi_attn_flag,
|
|
{ "Flags", "dsi.attn_flag",
|
|
FT_UINT16, BASE_HEX, VALS(dsi_attn_flag_vals), 0xf000,
|
|
"Server attention flag", HFILL }},
|
|
{ &hf_dsi_attn_flag_shutdown,
|
|
{ "Shutdown", "dsi.attn_flag.shutdown",
|
|
FT_BOOLEAN, 16, NULL, 1<<15,
|
|
"Attention flag, server is shutting down", HFILL }},
|
|
{ &hf_dsi_attn_flag_crash,
|
|
{ "Crash", "dsi.attn_flag.crash",
|
|
FT_BOOLEAN, 16, NULL, 1<<14,
|
|
"Attention flag, server crash bit", HFILL }},
|
|
{ &hf_dsi_attn_flag_msg,
|
|
{ "Message", "dsi.attn_flag.msg",
|
|
FT_BOOLEAN, 16, NULL, 1<<13,
|
|
"Attention flag, server message bit", HFILL }},
|
|
{ &hf_dsi_attn_flag_reconnect,
|
|
{ "Don't reconnect", "dsi.attn_flag.reconnect",
|
|
FT_BOOLEAN, 16, NULL, 1<<12,
|
|
"Attention flag, don't reconnect bit", HFILL }},
|
|
{ &hf_dsi_attn_flag_time,
|
|
{ "Minutes", "dsi.attn_flag.time",
|
|
FT_UINT16, BASE_DEC, NULL, 0xfff,
|
|
"Number of minutes", HFILL }},
|
|
{ &hf_dsi_attn_flag_bitmap,
|
|
{ "Bitmap", "dsi.attn_flag.time",
|
|
FT_UINT16, BASE_HEX, NULL, 0xfff,
|
|
"Attention extended bitmap", HFILL }},
|
|
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_dsi,
|
|
&ett_dsi_open,
|
|
&ett_dsi_attn,
|
|
&ett_dsi_attn_flag,
|
|
/* asp afp */
|
|
&ett_dsi_status,
|
|
&ett_dsi_status_server_flag,
|
|
&ett_dsi_vers,
|
|
&ett_dsi_uams,
|
|
&ett_dsi_addr,
|
|
&ett_dsi_addr_line,
|
|
&ett_dsi_directory,
|
|
&ett_dsi_utf8_name,
|
|
};
|
|
module_t *dsi_module;
|
|
|
|
proto_dsi = proto_register_protocol("Data Stream Interface", "DSI", "dsi");
|
|
proto_register_field_array(proto_dsi, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
dsi_module = prefs_register_protocol(proto_dsi, NULL);
|
|
prefs_register_bool_preference(dsi_module, "desegment",
|
|
"Desegment all DSI messages spanning multiple TCP segments",
|
|
"Whether the DSI dissector should desegment all messages spanning multiple TCP segments",
|
|
&dsi_desegment);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_dsi(void)
|
|
{
|
|
static dissector_handle_t dsi_handle;
|
|
|
|
dsi_handle = create_dissector_handle(dissect_dsi, proto_dsi);
|
|
dissector_add("tcp.port", TCP_PORT_DSI, dsi_handle);
|
|
|
|
data_handle = find_dissector("data");
|
|
afp_handle = find_dissector("afp");
|
|
}
|