forked from osmocom/wireshark
354 lines
8.7 KiB
C
354 lines
8.7 KiB
C
/* packet-tns.c
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* Routines for MSX tns packet dissection
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*
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* $Id: packet-tns.c,v 1.7 2000/05/31 05:07:50 guy Exp $
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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 1998 Gerald Combs
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*
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* Copied from packet-tftp.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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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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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 <string.h>
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#include <glib.h>
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#include "packet.h"
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#include "packet-tns.h"
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static int proto_tns = -1;
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static int hf_tns_request = -1;
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static int hf_tns_response = -1;
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static int hf_tns_length = -1;
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static int hf_tns_packet_checksum = -1;
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static int hf_tns_header_checksum = -1;
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static int hf_tns_packet_type = -1;
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static int hf_tns_reserved_byte = -1;
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static int hf_tns_data_flag = -1;
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static int hf_tns_sns = -1;
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static int hf_tns_connect = -1;
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static int hf_tns_version = -1;
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static int hf_tns_compat_version = -1;
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static int hf_tns_service_options = -1;
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static gint ett_tns = -1;
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static gint ett_tns_sns = -1;
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static gint ett_tns_connect = -1;
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static gint ett_sql = -1;
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#define TCP_PORT_TNS 1521
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static const value_string tns_type_vals[] = {
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{TNS_TYPE_CONNECT, "Connect" },
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{TNS_TYPE_ACCEPT, "Accept" },
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{TNS_TYPE_DATA, "Data" },
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{TNS_TYPE_RESEND, "Resend"},
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{0, NULL}
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};
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/* Handy macro for checking for truncated packet */
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#define TRUNC(length) if ( ! BYTES_ARE_IN_FRAME(offset, length)) { \
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dissect_data(pd,offset,fd,tree); return; }
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static void dissect_tns_sns(const u_char *pd, int offset, frame_data *fd,
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proto_tree *tree, proto_tree *tns_tree)
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{
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proto_tree *sns_tree = NULL, *ti;
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if ( tree )
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{
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ti = proto_tree_add_text(tns_tree, NullTVB, offset, END_OF_FRAME, "Secure Network Services");
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sns_tree = proto_item_add_subtree(ti, ett_tns_sns);
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proto_tree_add_boolean_hidden(tns_tree, hf_tns_sns, NullTVB, 0, 0, TRUE);
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}
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if ( check_col(fd, COL_INFO) )
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{
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col_append_fstr(fd, COL_INFO, ", SNS");
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}
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if ( sns_tree )
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{
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dissect_data(pd,offset,fd,sns_tree);
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}
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}
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static void dissect_tns_data(const u_char *pd, int offset, frame_data *fd,
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proto_tree *tree, proto_tree *tns_tree)
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{
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TRUNC(2);
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if ( tree )
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{
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proto_tree_add_uint(tns_tree, hf_tns_data_flag, NullTVB,
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offset, 2, pntohs(&pd[offset]));
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}
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offset += 2;
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if ( BYTES_ARE_IN_FRAME(offset, 4) )
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{
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if ( pd[offset] == 0xDE && pd[offset+1] == 0xAD &&
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pd[offset+2] == 0xBE && pd[offset+3] == 0xEF )
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{
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dissect_tns_sns(pd,offset,fd,tree,tns_tree);
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return;
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}
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}
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dissect_data(pd,offset,fd,tree);
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return;
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}
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static void dissect_tns_connect(const u_char *pd, int offset, frame_data *fd,
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proto_tree *tree, proto_tree *tns_tree)
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{
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proto_tree *connect_tree = NULL, *ti;
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if ( tree )
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{
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ti = proto_tree_add_text(tns_tree, NullTVB, offset, END_OF_FRAME, "Connect");
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connect_tree = proto_item_add_subtree(ti, ett_tns_connect);
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proto_tree_add_boolean_hidden(tns_tree, hf_tns_connect, NullTVB, 0, 0, TRUE);
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}
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if ( check_col(fd, COL_INFO) )
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{
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col_append_fstr(fd, COL_INFO, ", Connect");
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}
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TRUNC(2);
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if ( connect_tree )
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{
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proto_tree_add_uint(connect_tree, hf_tns_version, NullTVB,
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offset, 2, pntohs(&pd[offset]));
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}
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offset += 2;
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TRUNC(2);
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if ( connect_tree )
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{
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proto_tree_add_uint(connect_tree, hf_tns_compat_version, NullTVB,
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offset, 2, pntohs(&pd[offset]));
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}
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offset += 2;
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TRUNC(2);
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if ( connect_tree )
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{
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/* need to break down w/ bitfield */
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proto_tree_add_uint(connect_tree, hf_tns_service_options, NullTVB,
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offset, 2, pntohs(&pd[offset]));
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}
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offset += 2;
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if ( connect_tree )
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{
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dissect_data(pd,offset,fd,connect_tree);
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}
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return;
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}
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static void dissect_tns_accept(const u_char *pd, int offset, frame_data *fd,
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proto_tree *tree, proto_tree *tns_tree)
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{
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dissect_data(pd,offset,fd,tns_tree);
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return;
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}
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static void
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dissect_tns(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
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{
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proto_tree *tns_tree = NULL, *ti;
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guint16 length;
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guint16 type;
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if (check_col(fd, COL_PROTOCOL))
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col_add_str(fd, COL_PROTOCOL, "TNS");
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if (check_col(fd, COL_INFO))
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{
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col_add_fstr(fd, COL_INFO, "%s",
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(pi.match_port == pi.destport) ? "Request" : "Response");
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}
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if (tree)
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{
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ti = proto_tree_add_item(tree, proto_tns, NullTVB, offset, END_OF_FRAME, FALSE);
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tns_tree = proto_item_add_subtree(ti, ett_tns);
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if (pi.match_port == pi.destport)
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{
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proto_tree_add_boolean_hidden(tns_tree, hf_tns_request, NullTVB,
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offset, END_OF_FRAME, TRUE);
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proto_tree_add_text(tns_tree, NullTVB, offset,
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END_OF_FRAME, "Request: <opaque data>" );
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}
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else
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{
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proto_tree_add_boolean_hidden(tns_tree, hf_tns_response, NullTVB,
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offset, END_OF_FRAME, TRUE);
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proto_tree_add_text(tns_tree, NullTVB, offset,
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END_OF_FRAME, "Response: <opaque data>");
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}
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}
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/* check to make sure length is present */
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if ( ! BYTES_ARE_IN_FRAME(offset, 2)) return;
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length = pntohs(&pd[offset]);
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if (tree)
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{
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proto_tree_add_uint(tns_tree, hf_tns_length, NullTVB,
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offset, 2, length);
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}
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TRUNC(length);
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offset += 2;
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TRUNC(2);
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if ( tree )
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{
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proto_tree_add_uint(tns_tree, hf_tns_packet_checksum, NullTVB,
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offset, 2, pntohs(&pd[offset]));
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}
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offset += 2;
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TRUNC(2);
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type = pd[offset];
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if ( tree )
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{
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proto_tree_add_uint(tns_tree, hf_tns_packet_type, NullTVB,
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offset, 1, type);
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}
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offset += 1;
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if ( check_col(fd, COL_INFO))
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{
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col_append_fstr(fd, COL_INFO, ", %s (%d)",
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val_to_str(type, tns_type_vals, "Unknown"), type);
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}
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TRUNC(1);
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if ( tree )
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{
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proto_tree_add_bytes(tns_tree, hf_tns_reserved_byte, NullTVB,
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offset, 1, &pd[offset]);
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}
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offset += 1;
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TRUNC(2);
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if ( tree )
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{
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proto_tree_add_uint(tns_tree, hf_tns_header_checksum, NullTVB,
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offset, 2, pntohs(&pd[offset]));
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}
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offset += 2;
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switch (type)
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{
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case TNS_TYPE_CONNECT:
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dissect_tns_connect(pd,offset,fd,tree,tns_tree);
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break;
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case TNS_TYPE_ACCEPT:
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dissect_tns_accept(pd,offset,fd,tree,tns_tree);
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break;
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case TNS_TYPE_DATA:
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dissect_tns_data(pd,offset,fd,tree,tns_tree);
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break;
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default:
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dissect_data(pd,offset,fd,tns_tree);
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}
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}
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void proto_register_tns(void)
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{
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static hf_register_info hf[] = {
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{ &hf_tns_sns, {
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"Secure Network Services", "tns.sns", FT_BOOLEAN, BASE_NONE,
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NULL, 0x0, "Secure Network Services" }},
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{ &hf_tns_connect, {
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"Connect", "tns.connect", FT_BOOLEAN, BASE_NONE,
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NULL, 0x0, "Connect" }},
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{ &hf_tns_response, {
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"Response", "tns.response", FT_BOOLEAN, BASE_NONE,
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NULL, 0x0, "TRUE if TNS response" }},
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{ &hf_tns_request, {
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"Request", "tns.request", FT_BOOLEAN, BASE_NONE,
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NULL, 0x0, "TRUE if TNS request" }},
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{ &hf_tns_length, {
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"Packet Length", "tns.length", FT_UINT32, BASE_NONE,
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NULL, 0x0, "Length of TNS packet" }},
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{ &hf_tns_packet_checksum, {
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"Packet Checksum", "tns.packet_checksum", FT_UINT16, BASE_HEX,
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NULL, 0x0, "Checksum of Packet Data" }},
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{ &hf_tns_header_checksum, {
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"Header Checksum", "tns.header_checksum", FT_UINT16, BASE_HEX,
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NULL, 0x0, "Checksum of Header Data" }},
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{ &hf_tns_data_flag, {
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"Data Flag", "tns.data_flag", FT_UINT16, BASE_HEX,
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NULL, 0x0, "Data Flag" }},
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{ &hf_tns_version, {
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"Version", "tns.version", FT_UINT16, BASE_DEC,
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NULL, 0x0, "Version" }},
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{ &hf_tns_compat_version, {
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"Version (Compatible)", "tns.compat_version", FT_UINT16, BASE_DEC,
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NULL, 0x0, "Version (Compatible)" }},
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{ &hf_tns_service_options, {
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"Service Options", "tns.service_options", FT_UINT16, BASE_HEX,
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NULL, 0x0, "Service Options" }},
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{ &hf_tns_reserved_byte, {
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"Reserved Byte", "tns.reserved_byte", FT_BYTES, BASE_HEX,
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NULL, 0x0, "Reserved Byte" }},
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{ &hf_tns_packet_type, {
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"Packet Type", "tns.type", FT_UINT8, BASE_NONE,
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VALS(tns_type_vals), 0x0, "Type of TNS packet" }}
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};
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static gint *ett[] = {
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&ett_tns,
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&ett_tns_sns,
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&ett_tns_connect,
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&ett_sql
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};
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proto_tns = proto_register_protocol(
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"Transparent Network Substrate Protocol", "tns");
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proto_register_field_array(proto_tns, 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_tns(void)
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{
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dissector_add("tcp.port", TCP_PORT_TNS, dissect_tns);
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}
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