forked from osmocom/wireshark
357 lines
10 KiB
C
357 lines
10 KiB
C
/* packet-dap.c
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* Routines for X.511 (X.500 Directory Asbtract Service) and X.519 DAP packet dissection
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* Graeme Lunt 2005
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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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 <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/conversation.h>
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#include <stdio.h>
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#include <string.h>
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#include "packet-ber.h"
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#include "packet-acse.h"
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#include "packet-ros.h"
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#include "packet-x509if.h"
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#include "packet-x509af.h"
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#include "packet-x509sat.h"
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#include "packet-crmf.h"
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#include "packet-dsp.h"
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#include "packet-disp.h"
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#include "packet-dap.h"
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#include <epan/strutil.h>
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/* we don't have a separate dissector for X519 -
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most of DAP is defined in X511 */
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#define PNAME "X.519 Directory Access Protocol"
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#define PSNAME "DAP"
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#define PFNAME "dap"
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static guint global_dap_tcp_port = 102;
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static guint tcp_port = 0;
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static dissector_handle_t tpkt_handle = NULL;
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void prefs_register_dap(void); /* forwad declaration for use in preferences registration */
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/* Initialize the protocol and registered fields */
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int proto_dap = -1;
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static struct SESSION_DATA_STRUCTURE* session = NULL;
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#include "packet-dap-hf.c"
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/* Initialize the subtree pointers */
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static gint ett_dap = -1;
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#include "packet-dap-ett.c"
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#include "packet-dap-fn.c"
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/*
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* Dissect DAP PDUs inside a ROS PDUs
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*/
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static void
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dissect_dap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
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{
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int offset = 0;
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int old_offset;
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proto_item *item=NULL;
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proto_tree *tree=NULL;
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int (*dap_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, int hf_index _U_) = NULL;
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char *dap_op_name;
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/* do we have operation information from the ROS dissector? */
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if( !pinfo->private_data ){
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if(parent_tree){
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proto_tree_add_text(parent_tree, tvb, offset, -1,
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"Internal error: can't get operation information from ROS dissector.");
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}
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return ;
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} else {
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session = ( (struct SESSION_DATA_STRUCTURE*)(pinfo->private_data) );
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}
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if(parent_tree){
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item = proto_tree_add_item(parent_tree, proto_dap, tvb, 0, -1, FALSE);
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tree = proto_item_add_subtree(item, ett_dap);
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}
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "DAP");
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if (check_col(pinfo->cinfo, COL_INFO))
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col_clear(pinfo->cinfo, COL_INFO);
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switch(session->ros_op & ROS_OP_MASK) {
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case (ROS_OP_BIND | ROS_OP_ARGUMENT): /* BindInvoke */
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dap_dissector = dissect_dap_DirectoryBindArgument;
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dap_op_name = "Bind-Argument";
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break;
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case (ROS_OP_BIND | ROS_OP_RESULT): /* BindResult */
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dap_dissector = dissect_dap_DirectoryBindResult;
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dap_op_name = "Bind-Result";
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break;
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case (ROS_OP_BIND | ROS_OP_ERROR): /* BindError */
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dap_dissector = dissect_dap_DirectoryBindError;
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dap_op_name = "Bind-Error";
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break;
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case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /* Invoke Argument */
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switch(session->ros_op & ROS_OP_OPCODE_MASK) {
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case 1: /* read */
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dap_dissector = dissect_dap_ReadArgument;
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dap_op_name = "Read-Argument";
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break;
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case 2: /* compare */
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dap_dissector = dissect_dap_CompareArgument;
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dap_op_name = "Compare-Argument";
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break;
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case 3: /* abandon */
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dap_dissector = dissect_dap_AbandonArgument;
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dap_op_name = "Abandon-Argument";
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break;
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case 4: /* list */
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dap_dissector = dissect_dap_ListArgument;
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dap_op_name = "List-Argument";
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break;
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case 5: /* search */
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dap_dissector = dissect_dap_SearchArgument;
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dap_op_name = "Search-Argument";
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break;
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case 6: /* addEntry */
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dap_dissector = dissect_dap_AddEntryArgument;
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dap_op_name = "Add-Entry-Argument";
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break;
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case 7: /* removeEntry */
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dap_dissector = dissect_dap_RemoveEntryArgument;
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dap_op_name = "Remove-Entry-Argument";
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break;
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case 8: /* modifyEntry */
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dap_dissector = dissect_dap_ModifyEntryArgument;
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dap_op_name = "Modify-Entry-Argument";
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break;
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case 9: /* modifyDN */
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dap_dissector = dissect_dap_ModifyDNArgument;
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dap_op_name = "Modify-DN-Argument";
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break;
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default:
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proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DAP opcode (%d)",
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session->ros_op & ROS_OP_OPCODE_MASK);
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break;
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}
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break;
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case (ROS_OP_INVOKE | ROS_OP_RESULT): /* Return Result */
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switch(session->ros_op & ROS_OP_OPCODE_MASK) {
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case 1: /* read */
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dap_dissector = dissect_dap_ReadResult;
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dap_op_name = "Read-Result";
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break;
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case 2: /* compare */
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dap_dissector = dissect_dap_CompareResult;
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dap_op_name = "Compare-Result";
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break;
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case 3: /* abandon */
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dap_dissector = dissect_dap_AbandonResult;
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dap_op_name = "Abandon-Result";
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break;
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case 4: /* list */
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dap_dissector = dissect_dap_ListResult;
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dap_op_name = "List-Result";
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break;
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case 5: /* search */
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dap_dissector = dissect_dap_SearchResult;
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dap_op_name = "Search-Result";
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break;
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case 6: /* addEntry */
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dap_dissector = dissect_dap_AddEntryResult;
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dap_op_name = "Add-Entry-Result";
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break;
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case 7: /* removeEntry */
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dap_dissector = dissect_dap_RemoveEntryResult;
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dap_op_name = "Remove-Entry-Result";
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break;
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case 8: /* modifyEntry */
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dap_dissector = dissect_dap_ModifyEntryResult;
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dap_op_name = "Modify-Entry-Result";
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break;
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case 9: /* modifyDN */
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dap_dissector = dissect_dap_ModifyDNResult;
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dap_op_name = "Modify-DN-Result";
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break;
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default:
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proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DAP opcode");
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break;
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}
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break;
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case (ROS_OP_INVOKE | ROS_OP_ERROR): /* Return Error */
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switch(session->ros_op & ROS_OP_OPCODE_MASK) {
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case 1: /* attributeError */
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dap_dissector = dissect_dap_AttributeError;
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dap_op_name = "Attribute-Error";
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break;
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case 2: /* nameError */
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dap_dissector = dissect_dap_NameError;
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dap_op_name = "Name-Error";
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break;
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case 3: /* serviceError */
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dap_dissector = dissect_dap_ServiceError;
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dap_op_name = "Service-Error";
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break;
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case 4: /* referral */
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dap_dissector = dissect_dap_Referral;
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dap_op_name = "Referral";
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break;
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case 5: /* abandoned */
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dap_dissector = dissect_dap_Abandoned;
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dap_op_name = "Abandoned";
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break;
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case 6: /* securityError */
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dap_dissector = dissect_dap_SecurityError;
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dap_op_name = "Security-Error";
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break;
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case 7: /* abandonFailed */
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dap_dissector = dissect_dap_AbandonFailedError;
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dap_op_name = "Abandon-Failed-Error";
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break;
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case 8: /* updateError */
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dap_dissector = dissect_dap_UpdateError;
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dap_op_name = "Update-Error";
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break;
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default:
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proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DAP errcode");
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break;
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}
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break;
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default:
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proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DAP PDU");
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return;
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}
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if(dap_dissector) {
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if (check_col(pinfo->cinfo, COL_INFO))
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col_add_str(pinfo->cinfo, COL_INFO, dap_op_name);
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while (tvb_reported_length_remaining(tvb, offset) > 0){
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old_offset=offset;
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offset=(*dap_dissector)(FALSE, tvb, offset, pinfo , tree, -1);
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if(offset == old_offset){
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proto_tree_add_text(tree, tvb, offset, -1,"Internal error, zero-byte DAP PDU");
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offset = tvb_length(tvb);
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break;
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}
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}
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}
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}
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/*--- proto_register_dap -------------------------------------------*/
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void proto_register_dap(void) {
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/* List of fields */
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static hf_register_info hf[] =
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{
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#include "packet-dap-hfarr.c"
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};
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/* List of subtrees */
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static gint *ett[] = {
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&ett_dap,
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#include "packet-dap-ettarr.c"
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};
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module_t *dap_module;
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/* Register protocol */
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proto_dap = proto_register_protocol(PNAME, PSNAME, PFNAME);
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register_dissector("dap", dissect_dap, proto_dap);
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/* Register fields and subtrees */
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proto_register_field_array(proto_dap, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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/* Register our configuration options for DAP, particularly our port */
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#ifdef PREFERENCE_GROUPING
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dap_module = prefs_register_protocol_subtree("OSI/X.500", proto_dap, prefs_register_dap);
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#else
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dap_module = prefs_register_protocol(proto_dap, prefs_register_dap);
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#endif
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prefs_register_uint_preference(dap_module, "tcp.port", "DAP TCP Port",
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"Set the port for DAP operations (if other"
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" than the default of 102)",
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10, &global_dap_tcp_port);
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}
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/*--- proto_reg_handoff_dap --- */
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void proto_reg_handoff_dap(void) {
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dissector_handle_t handle = NULL;
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/* #include "packet-dap-dis-tab.c" */
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/* APPLICATION CONTEXT */
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register_ber_oid_name("2.5.3.1", "id-ac-directory-access");
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/* ABSTRACT SYNTAXES */
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/* Register DAP with ROS (with no use of RTSE) */
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if((handle = find_dissector("dap"))) {
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register_ros_oid_dissector_handle("2.5.9.1", handle, 0, "id-as-directory-access", FALSE);
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}
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/* remember the tpkt handler for change in preferences */
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tpkt_handle = find_dissector("tpkt");
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/* AttributeValueAssertions */
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x509if_register_fmt(hf_dap_equality, "=");
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x509if_register_fmt(hf_dap_greaterOrEqual, ">=");
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x509if_register_fmt(hf_dap_lessOrEqual, "<=");
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x509if_register_fmt(hf_dap_approximateMatch, "=~");
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/* AttributeTypes */
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x509if_register_fmt(hf_dap_present, "= *");
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}
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void prefs_register_dap(void) {
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/* de-register the old port */
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/* port 102 is registered by TPKT - don't undo this! */
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if((tcp_port != 102) && tpkt_handle)
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dissector_delete("tcp.port", tcp_port, tpkt_handle);
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/* Set our port number for future use */
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tcp_port = global_dap_tcp_port;
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if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle)
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dissector_add("tcp.port", global_dap_tcp_port, tpkt_handle);
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}
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