forked from osmocom/wireshark
346 lines
8.7 KiB
C
346 lines
8.7 KiB
C
/* packet-tns.c
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* Routines for Oracle TNS packet dissection
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*
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* $Id: packet-tns.c,v 1.15 2001/06/18 02:17:53 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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static void dissect_tns_sns(tvbuff_t *tvb, int offset, packet_info *pinfo,
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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, tvb, offset,
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tvb_length_remaining(tvb, offset), "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, tvb, 0, 0,
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TRUE);
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}
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if ( check_col(pinfo->fd, COL_INFO) )
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{
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col_append_fstr(pinfo->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(tvb,offset,pinfo,sns_tree);
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}
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}
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static void dissect_tns_data(tvbuff_t *tvb, int offset, packet_info *pinfo,
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proto_tree *tree, proto_tree *tns_tree)
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{
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if ( tree )
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{
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proto_tree_add_uint(tns_tree, hf_tns_data_flag, tvb,
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offset, 2, FALSE);
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}
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offset += 2;
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if ( tvb_bytes_exist(tvb, offset, 4) )
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{
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if ( tvb_get_guint8(tvb, offset) == 0xDE &&
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tvb_get_guint8(tvb, offset+1) == 0xAD &&
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tvb_get_guint8(tvb, offset+2) == 0xBE &&
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tvb_get_guint8(tvb, offset+3) == 0xEF )
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{
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dissect_tns_sns(tvb,offset,pinfo,tree,tns_tree);
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return;
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}
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}
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dissect_data(tvb,offset,pinfo,tree);
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return;
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}
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static void dissect_tns_connect(tvbuff_t *tvb, int offset, packet_info *pinfo,
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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, tvb, offset,
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tvb_length_remaining(tvb, offset), "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, tvb,
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0, 0, TRUE);
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}
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if ( check_col(pinfo->fd, COL_INFO) )
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{
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col_append_str(pinfo->fd, COL_INFO, ", Connect");
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}
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if ( connect_tree )
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{
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proto_tree_add_item(connect_tree, hf_tns_version, tvb,
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offset, 2, FALSE);
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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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proto_tree_add_item(connect_tree, hf_tns_compat_version, tvb,
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offset, 2, FALSE);
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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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/* need to break down w/ bitfield */
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proto_tree_add_uint(connect_tree, hf_tns_service_options, tvb,
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offset, 2, tvb_get_ntohs(tvb, 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(tvb,offset,pinfo,connect_tree);
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}
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return;
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}
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static void dissect_tns_accept(tvbuff_t *tvb, int offset, packet_info *pinfo,
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proto_tree *tree, proto_tree *tns_tree)
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{
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dissect_data(tvb,offset,pinfo,tns_tree);
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return;
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}
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static void
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dissect_tns(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_tree *tns_tree = NULL, *ti;
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int offset = 0;
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guint16 length;
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guint16 type;
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if (check_col(pinfo->fd, COL_PROTOCOL))
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col_set_str(pinfo->fd, COL_PROTOCOL, "TNS");
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if (check_col(pinfo->fd, COL_INFO))
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{
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col_add_str(pinfo->fd, COL_INFO,
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(pinfo->match_port == pinfo->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, tvb, 0,
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tvb_length(tvb), FALSE);
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tns_tree = proto_item_add_subtree(ti, ett_tns);
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if (pinfo->match_port == pinfo->destport)
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{
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proto_tree_add_boolean_hidden(tns_tree, hf_tns_request,
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tvb, offset, tvb_length(tvb), TRUE);
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proto_tree_add_text(tns_tree, tvb, offset,
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tvb_length(tvb), "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,
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tvb, offset, tvb_length(tvb), TRUE);
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proto_tree_add_text(tns_tree, tvb, offset,
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tvb_length(tvb), "Response: <opaque data>");
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}
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}
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length = tvb_get_ntohs(tvb, offset);
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if (tree)
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{
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proto_tree_add_uint(tns_tree, hf_tns_length, tvb,
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offset, 2, length);
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}
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offset += 2;
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if ( tree )
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{
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proto_tree_add_item(tns_tree, hf_tns_packet_checksum, tvb,
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offset, 2, FALSE);
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}
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offset += 2;
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type = tvb_get_guint8(tvb, 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, tvb,
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offset, 1, type);
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}
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offset += 1;
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if ( check_col(pinfo->fd, COL_INFO))
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{
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col_append_fstr(pinfo->fd, COL_INFO, ", %s (%u)",
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val_to_str(type, tns_type_vals, "Unknown"), type);
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}
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if ( tree )
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{
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proto_tree_add_item(tns_tree, hf_tns_reserved_byte, tvb,
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offset, 1, FALSE);
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}
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offset += 1;
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if ( tree )
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{
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proto_tree_add_item(tns_tree, hf_tns_header_checksum, tvb,
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offset, 2, FALSE);
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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(tvb,offset,pinfo,tree,tns_tree);
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break;
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case TNS_TYPE_ACCEPT:
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dissect_tns_accept(tvb,offset,pinfo,tree,tns_tree);
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break;
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case TNS_TYPE_DATA:
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dissect_tns_data(tvb,offset,pinfo,tree,tns_tree);
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break;
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default:
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dissect_data(tvb,offset,pinfo,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", HFILL }},
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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", HFILL }},
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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", HFILL }},
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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", HFILL }},
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{ &hf_tns_length, {
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"Packet Length", "tns.length", FT_UINT32, BASE_DEC,
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NULL, 0x0, "Length of TNS packet", HFILL }},
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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", HFILL }},
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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", HFILL }},
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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", HFILL }},
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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", HFILL }},
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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)", HFILL }},
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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", HFILL }},
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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", HFILL }},
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{ &hf_tns_packet_type, {
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"Packet Type", "tns.type", FT_UINT8, BASE_DEC,
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VALS(tns_type_vals), 0x0, "Type of TNS packet", HFILL }}
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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", "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, proto_tns);
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}
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