asn1/dop/packet-dop-template.c

   1 /* packet-dop.c
   2  * Routines for X.501 (DSA Operational Attributes)  packet dissection
   3  * Graeme Lunt 2005
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  24  */
  25
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <glib.h>
  31 #include <epan/packet.h>
  32 #include <epan/prefs.h>
  33 #include <epan/conversation.h>
  34
  35 #include <stdio.h>
  36 #include <string.h>
  37
  38 #include "packet-ber.h"
  39 #include "packet-acse.h"
  40 #include "packet-ros.h"
  41
  42 #include "packet-x509sat.h"
  43 #include "packet-x509af.h"
  44 #include "packet-x509if.h"
  45 #include "packet-dap.h"
  46 #include "packet-dsp.h"
  47 #include "packet-crmf.h"
  48
  49
  50 #include "packet-dop.h"
  51
  52 #define PNAME  "X.501 Directory Operational Binding Management Protocol"
  53 #define PSNAME "DOP"
  54 #define PFNAME "dop"
  55
  56 static guint global_dop_tcp_port = 102;
  57 static guint tcp_port = 0;
  58 static dissector_handle_t tpkt_handle = NULL;
  59 void prefs_register_dop(void); /* forwad declaration for use in preferences registration */
  60
  61 /* Initialize the protocol and registered fields */
  62 int proto_dop = -1;
  63
  64 static struct SESSION_DATA_STRUCTURE* session = NULL;
  65 static const char *binding_type = NULL; /* binding_type */
  66
  67 static int call_dop_oid_callback(char *base_oid, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, char *col_info);
  68
  69 #include "packet-dop-hf.c"
  70
  71 /* Initialize the subtree pointers */
  72 static gint ett_dop = -1;
  73 #include "packet-dop-ett.c"
  74
  75 #include "packet-dop-fn.c"
  76
  77 static int
  78 call_dop_oid_callback(char *base_oid, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, char *col_info)
  79 {
  80   char binding_param[BER_MAX_OID_STR_LEN];
  81
  82   g_snprintf(binding_param, BER_MAX_OID_STR_LEN, "%s.%s", base_oid, binding_type ? binding_type : "");
  83
  84   if (col_info && (check_col(pinfo->cinfo, COL_INFO)))
  85     col_append_fstr(pinfo->cinfo, COL_INFO, " %s", col_info);
  86
  87   return call_ber_oid_callback(binding_param, tvb, offset, pinfo, tree);
  88 }
  89
  90
  91 /*
  92 * Dissect DOP PDUs inside a ROS PDUs
  93 */
  94 static void
  95 dissect_dop(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
  96 {
  97         int offset = 0;
  98         int old_offset;
  99         proto_item *item=NULL;
 100         proto_tree *tree=NULL;
 101         int (*dop_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, int hf_index _U_) = NULL;
 102         char *dop_op_name;
 103
 104         /* do we have operation information from the ROS dissector?  */
 105         if( !pinfo->private_data ){
 106                 if(parent_tree){
 107                         proto_tree_add_text(parent_tree, tvb, offset, -1,
 108                                 "Internal error: can't get operation information from ROS dissector.");
 109                 }
 110                 return  ;
 111         } else {
 112                 session  = ( (struct SESSION_DATA_STRUCTURE*)(pinfo->private_data) );
 113         }
 114
 115         if(parent_tree){
 116                 item = proto_tree_add_item(parent_tree, proto_dop, tvb, 0, -1, FALSE);
 117                 tree = proto_item_add_subtree(item, ett_dop);
 118         }
 119         if (check_col(pinfo->cinfo, COL_PROTOCOL))
 120                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "DOP");
 121         if (check_col(pinfo->cinfo, COL_INFO))
 122                 col_clear(pinfo->cinfo, COL_INFO);
 123
 124         switch(session->ros_op & ROS_OP_MASK) {
 125         case (ROS_OP_BIND | ROS_OP_ARGUMENT):   /*  BindInvoke */
 126           dop_dissector = dissect_dop_DSAOperationalManagementBindArgument;
 127           dop_op_name = "DSA-Operational-Bind-Argument";
 128           break;
 129         case (ROS_OP_BIND | ROS_OP_RESULT):     /*  BindResult */
 130           dop_dissector = dissect_dop_DSAOperationalManagementBindResult;
 131           dop_op_name = "DSA-Operational-Bind-Result";
 132           break;
 133         case (ROS_OP_BIND | ROS_OP_ERROR):      /*  BindError */
 134           dop_dissector = dissect_dop_DSAOperationalManagementBindError;
 135           dop_op_name = "DSA-Operational-Management-Bind-Error";
 136           break;
 137         case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /*  Invoke Argument */
 138           switch(session->ros_op & ROS_OP_OPCODE_MASK) {
 139           case 100: /* establish */
 140             dop_dissector = dissect_dop_EstablishOperationalBindingArgument;
 141             dop_op_name = "Establish-Operational-Binding-Argument";
 142             break;
 143           case 101: /* terminate */
 144             dop_dissector = dissect_dop_TerminateOperationalBindingArgument;
 145             dop_op_name = "Terminate-Operational-Binding-Argument";
 146             break;
 147           case 102: /* modify */
 148             dop_dissector = dissect_dop_ModifyOperationalBindingArgument;
 149             dop_op_name = "Modify-Operational-Binding-Argument";
 150             break;
 151           default:
 152             proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP Argument opcode (%d)",
 153                                 session->ros_op & ROS_OP_OPCODE_MASK);
 154             break;
 155           }
 156           break;
 157         case (ROS_OP_INVOKE | ROS_OP_RESULT):   /*  Return Result */
 158           switch(session->ros_op & ROS_OP_OPCODE_MASK) {
 159           case 100: /* establish */
 160             dop_dissector = dissect_dop_EstablishOperationalBindingResult;
 161             dop_op_name = "Establish-Operational-Binding-Result";
 162             break;
 163           case 101: /* terminate */
 164             dop_dissector = dissect_dop_TerminateOperationalBindingResult;
 165             dop_op_name = "Terminate-Operational-Binding-Result";
 166             break;
 167           case 102: /* modify */
 168             dop_dissector = dissect_dop_ModifyOperationalBindingResult;
 169             dop_op_name = "Modify-Operational-Binding-Result";
 170             break;
 171           default:
 172             proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP Result opcode (%d)",
 173                                 session->ros_op & ROS_OP_OPCODE_MASK);
 174             break;
 175           }
 176           break;
 177         case (ROS_OP_INVOKE | ROS_OP_ERROR):    /*  Return Error */
 178           switch(session->ros_op & ROS_OP_OPCODE_MASK) {
 179           case 100: /* operational-binding */
 180             dop_dissector = dissect_dop_OpBindingErrorParam;
 181             dop_op_name = "Operational-Binding-Error";
 182             break;
 183           default:
 184             proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP Error opcode (%d)",
 185                                 session->ros_op & ROS_OP_OPCODE_MASK);
 186             break;
 187           }
 188           break;
 189         default:
 190           proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP PDU");
 191           return;
 192         }
 193
 194         if(dop_dissector) {
 195           if (check_col(pinfo->cinfo, COL_INFO))
 196             col_add_str(pinfo->cinfo, COL_INFO, dop_op_name);
 197
 198           while (tvb_reported_length_remaining(tvb, offset) > 0){
 199             old_offset=offset;
 200             offset=(*dop_dissector)(FALSE, tvb, offset, pinfo , tree, -1);
 201             if(offset == old_offset){
 202               proto_tree_add_text(tree, tvb, offset, -1,"Internal error, zero-byte DOP PDU");
 203               offset = tvb_length(tvb);
 204               break;
 205             }
 206           }
 207         }
 208 }
 209
 210
 211
 212 /*--- proto_register_dop -------------------------------------------*/
 213 void proto_register_dop(void) {
 214
 215   /* List of fields */
 216   static hf_register_info hf[] =
 217   {
 218 #include "packet-dop-hfarr.c"
 219   };
 220
 221   /* List of subtrees */
 222   static gint *ett[] = {
 223     &ett_dop,
 224 #include "packet-dop-ettarr.c"
 225   };
 226
 227   module_t *dop_module;
 228
 229   /* Register protocol */
 230   proto_dop = proto_register_protocol(PNAME, PSNAME, PFNAME);
 231
 232   register_dissector("dop", dissect_dop, proto_dop);
 233
 234   /* Register fields and subtrees */
 235   proto_register_field_array(proto_dop, hf, array_length(hf));
 236   proto_register_subtree_array(ett, array_length(ett));
 237
 238   /* Register our configuration options for DOP, particularly our port */
 239
 240 #ifdef PREFERENCE_GROUPING
 241   dop_module = prefs_register_protocol_subtree("OSI/X.500", proto_dop, prefs_register_dop);
 242 #else
 243   dop_module = prefs_register_protocol(proto_dop, prefs_register_dop);
 244 #endif
 245
 246   prefs_register_uint_preference(dop_module, "tcp.port", "DOP TCP Port",
 247                                  "Set the port for DOP operations (if other"
 248                                  " than the default of 102)",
 249                                  10, &global_dop_tcp_port);
 250
 251
 252 }
 253
 254
 255 /*--- proto_reg_handoff_dop --- */
 256 void proto_reg_handoff_dop(void) {
 257   dissector_handle_t handle = NULL;
 258
 259 #include "packet-dop-dis-tab.c"
 260   /* APPLICATION CONTEXT */
 261
 262   register_ber_oid_name("2.5.3.3", "id-ac-directory-operational-binding-management");
 263
 264   /* ABSTRACT SYNTAXES */
 265
 266   /* Register DOP with ROS (with no use of RTSE) */
 267   if((handle = find_dissector("dop"))) {
 268     register_ros_oid_dissector_handle("2.5.9.4", handle, 0, "id-as-directory-operational-binding-management", FALSE);
 269   }
 270
 271   /* BINDING TYPES */
 272
 273   register_ber_oid_name("2.5.19.1", "shadow-agreement");
 274   register_ber_oid_name("2.5.19.2", "hierarchical-agreement");
 275   register_ber_oid_name("2.5.19.3", "non-specific-hierarchical-agreement");
 276
 277   /* ACCESS CONTROL SCHEMES */
 278   register_ber_oid_name("2.5.28.1", "basic-ACS");
 279   register_ber_oid_name("2.5.28.2", "simplified-ACS");
 280   register_ber_oid_name("2.5.28.3", "ruleBased-ACS");
 281   register_ber_oid_name("2.5.28.4", "ruleAndBasic-ACS");
 282   register_ber_oid_name("2.5.28.5", "ruleAndSimple-ACS");
 283
 284   /* ADMINISTRATIVE ROLES */
 285   register_ber_oid_name("2.5.23.1", "id-ar-autonomousArea");
 286   register_ber_oid_name("2.5.23.2", "id-ar-accessControlSpecificArea");
 287   register_ber_oid_name("2.5.23.3", "id-ar-accessControlInnerArea");
 288   register_ber_oid_name("2.5.23.4", "id-ar-subschemaAdminSpecificArea");
 289   register_ber_oid_name("2.5.23.5", "id-ar-collectiveAttributeSpecificArea");
 290   register_ber_oid_name("2.5.23.6", "id-ar-collectiveAttributeInnerArea");
 291   register_ber_oid_name("2.5.23.7", "id-ar-contextDefaultSpecificArea");
 292   register_ber_oid_name("2.5.23.8", "id-ar-serviceSpecificArea");
 293
 294   /* remember the tpkt handler for change in preferences */
 295   tpkt_handle = find_dissector("tpkt");
 296
 297 }
 298
 299 void prefs_register_dop(void) {
 300
 301   /* de-register the old port */
 302   /* port 102 is registered by TPKT - don't undo this! */
 303   if((tcp_port != 102) && tpkt_handle)
 304     dissector_delete("tcp.port", tcp_port, tpkt_handle);
 305
 306   /* Set our port number for future use */
 307   tcp_port = global_dop_tcp_port;
 308
 309   if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle)
 310     dissector_add("tcp.port", global_dop_tcp_port, tpkt_handle);
 311
 312 }