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/oids.h>
  34 #include <epan/asn1.h>
  35 #include <epan/expert.h>
  36
  37 #include <stdio.h>
  38 #include <string.h>
  39
  40 #include "packet-ber.h"
  41 #include "packet-acse.h"
  42 #include "packet-ros.h"
  43
  44 #include "packet-x509sat.h"
  45 #include "packet-x509af.h"
  46 #include "packet-x509if.h"
  47 #include "packet-dap.h"
  48 #include "packet-dsp.h"
  49 #include "packet-crmf.h"
  50
  51
  52 #include "packet-dop.h"
  53
  54 #define PNAME  "X.501 Directory Operational Binding Management Protocol"
  55 #define PSNAME "DOP"
  56 #define PFNAME "dop"
  57
  58 static guint global_dop_tcp_port = 102;
  59 static dissector_handle_t tpkt_handle;
  60 void prefs_register_dop(void); /* forward declaration for use in preferences registration */
  61
  62 /* Initialize the protocol and registered fields */
  63 int proto_dop = -1;
  64
  65 static struct SESSION_DATA_STRUCTURE* session = NULL;
  66 static const char *binding_type = NULL; /* binding_type */
  67
  68 static int call_dop_oid_callback(char *base_string, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, char *col_info);
  69
  70 #include "packet-dop-hf.c"
  71
  72 /* Initialize the subtree pointers */
  73 static gint ett_dop = -1;
  74 static gint ett_dop_unknown = -1;
  75 #include "packet-dop-ett.c"
  76
  77 /* Dissector table */
  78 static dissector_table_t dop_dissector_table;
  79
  80 static void append_oid(packet_info *pinfo, const char *oid)
  81 {
  82         const char *name = NULL;
  83
  84   if(check_col(pinfo->cinfo, COL_INFO)) {
  85     name = oid_resolved_from_string(oid);
  86     col_append_fstr(pinfo->cinfo, COL_INFO, " %s", name ? name : oid);
  87   }
  88 }
  89
  90 #include "packet-dop-fn.c"
  91
  92 static int
  93 call_dop_oid_callback(char *base_string, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, char *col_info)
  94 {
  95   char* binding_param;
  96
  97   binding_param = ep_strdup_printf("%s.%s", base_string, binding_type ? binding_type : "");
  98
  99   if (col_info && (check_col(pinfo->cinfo, COL_INFO)))
 100     col_append_fstr(pinfo->cinfo, COL_INFO, " %s", col_info);
 101
 102   if (dissector_try_string(dop_dissector_table, binding_param, tvb, pinfo, tree)) {
 103      offset += tvb_length_remaining (tvb, offset);
 104   } else {
 105      proto_item *item=NULL;
 106      proto_tree *next_tree=NULL;
 107
 108      item = proto_tree_add_text(tree, tvb, 0, tvb_length_remaining(tvb, offset), "Dissector for parameter %s OID:%s not implemented. Contact Wireshark developers if you want this supported", base_string, binding_type ? binding_type : "<empty>");
 109      if (item) {
 110         next_tree = proto_item_add_subtree(item, ett_dop_unknown);
 111      }
 112      offset = dissect_unknown_ber(pinfo, tvb, offset, next_tree);
 113      expert_add_info_format(pinfo, item, PI_UNDECODED, PI_WARN, "Unknown binding-parameter");
 114    }
 115
 116    return offset;
 117 }
 118
 119
 120 /*
 121 * Dissect DOP PDUs inside a ROS PDUs
 122 */
 123 static void
 124 dissect_dop(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
 125 {
 126         int offset = 0;
 127         int old_offset;
 128         proto_item *item=NULL;
 129         proto_tree *tree=NULL;
 130         int (*dop_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index _U_) = NULL;
 131         char *dop_op_name;
 132         asn1_ctx_t asn1_ctx;
 133
 134         asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
 135
 136         /* do we have operation information from the ROS dissector?  */
 137         if( !pinfo->private_data ){
 138                 if(parent_tree){
 139                         proto_tree_add_text(parent_tree, tvb, offset, -1,
 140                                 "Internal error: can't get operation information from ROS dissector.");
 141                 }
 142                 return  ;
 143         } else {
 144                 session  = ( (struct SESSION_DATA_STRUCTURE*)(pinfo->private_data) );
 145         }
 146
 147         if(parent_tree){
 148                 item = proto_tree_add_item(parent_tree, proto_dop, tvb, 0, -1, FALSE);
 149                 tree = proto_item_add_subtree(item, ett_dop);
 150         }
 151         col_set_str(pinfo->cinfo, COL_PROTOCOL, "DOP");
 152         if (check_col(pinfo->cinfo, COL_INFO))
 153                 col_clear(pinfo->cinfo, COL_INFO);
 154
 155         switch(session->ros_op & ROS_OP_MASK) {
 156         case (ROS_OP_BIND | ROS_OP_ARGUMENT):   /*  BindInvoke */
 157           dop_dissector = dissect_dop_DSAOperationalManagementBindArgument;
 158           dop_op_name = "DSA-Operational-Bind-Argument";
 159           break;
 160         case (ROS_OP_BIND | ROS_OP_RESULT):     /*  BindResult */
 161           dop_dissector = dissect_dop_DSAOperationalManagementBindResult;
 162           dop_op_name = "DSA-Operational-Bind-Result";
 163           break;
 164         case (ROS_OP_BIND | ROS_OP_ERROR):      /*  BindError */
 165           dop_dissector = dissect_dop_DSAOperationalManagementBindError;
 166           dop_op_name = "DSA-Operational-Management-Bind-Error";
 167           break;
 168         case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /*  Invoke Argument */
 169           switch(session->ros_op & ROS_OP_OPCODE_MASK) {
 170           case 100: /* establish */
 171             dop_dissector = dissect_dop_EstablishOperationalBindingArgument;
 172             dop_op_name = "Establish-Operational-Binding-Argument";
 173             break;
 174           case 101: /* terminate */
 175             dop_dissector = dissect_dop_TerminateOperationalBindingArgument;
 176             dop_op_name = "Terminate-Operational-Binding-Argument";
 177             break;
 178           case 102: /* modify */
 179             dop_dissector = dissect_dop_ModifyOperationalBindingArgument;
 180             dop_op_name = "Modify-Operational-Binding-Argument";
 181             break;
 182           default:
 183             proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP Argument opcode (%d)",
 184                                 session->ros_op & ROS_OP_OPCODE_MASK);
 185             break;
 186           }
 187           break;
 188         case (ROS_OP_INVOKE | ROS_OP_RESULT):   /*  Return Result */
 189           switch(session->ros_op & ROS_OP_OPCODE_MASK) {
 190           case 100: /* establish */
 191             dop_dissector = dissect_dop_EstablishOperationalBindingResult;
 192             dop_op_name = "Establish-Operational-Binding-Result";
 193             break;
 194           case 101: /* terminate */
 195             dop_dissector = dissect_dop_TerminateOperationalBindingResult;
 196             dop_op_name = "Terminate-Operational-Binding-Result";
 197             break;
 198           case 102: /* modify */
 199             dop_dissector = dissect_dop_ModifyOperationalBindingResult;
 200             dop_op_name = "Modify-Operational-Binding-Result";
 201             break;
 202           default:
 203             proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP Result opcode (%d)",
 204                                 session->ros_op & ROS_OP_OPCODE_MASK);
 205             break;
 206           }
 207           break;
 208         case (ROS_OP_INVOKE | ROS_OP_ERROR):    /*  Return Error */
 209           switch(session->ros_op & ROS_OP_OPCODE_MASK) {
 210           case 100: /* operational-binding */
 211             dop_dissector = dissect_dop_OpBindingErrorParam;
 212             dop_op_name = "Operational-Binding-Error";
 213             break;
 214           default:
 215             proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP Error opcode (%d)",
 216                                 session->ros_op & ROS_OP_OPCODE_MASK);
 217             break;
 218           }
 219           break;
 220         default:
 221           proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP PDU");
 222           return;
 223         }
 224
 225         if(dop_dissector) {
 226           if (check_col(pinfo->cinfo, COL_INFO))
 227             col_set_str(pinfo->cinfo, COL_INFO, dop_op_name);
 228
 229           while (tvb_reported_length_remaining(tvb, offset) > 0){
 230             old_offset=offset;
 231             offset=(*dop_dissector)(FALSE, tvb, offset, &asn1_ctx, tree, -1);
 232             if(offset == old_offset){
 233               proto_tree_add_text(tree, tvb, offset, -1,"Internal error, zero-byte DOP PDU");
 234               break;
 235             }
 236           }
 237         }
 238 }
 239
 240
 241
 242 /*--- proto_register_dop -------------------------------------------*/
 243 void proto_register_dop(void) {
 244
 245   /* List of fields */
 246   static hf_register_info hf[] =
 247   {
 248 #include "packet-dop-hfarr.c"
 249   };
 250
 251   /* List of subtrees */
 252   static gint *ett[] = {
 253     &ett_dop,
 254     &ett_dop_unknown,
 255 #include "packet-dop-ettarr.c"
 256   };
 257
 258   module_t *dop_module;
 259
 260   /* Register protocol */
 261   proto_dop = proto_register_protocol(PNAME, PSNAME, PFNAME);
 262
 263   register_dissector("dop", dissect_dop, proto_dop);
 264
 265   dop_dissector_table = register_dissector_table("dop.oid", "DOP OID Dissectors", FT_STRING, BASE_NONE);
 266
 267   /* Register fields and subtrees */
 268   proto_register_field_array(proto_dop, hf, array_length(hf));
 269   proto_register_subtree_array(ett, array_length(ett));
 270
 271   /* Register our configuration options for DOP, particularly our port */
 272
 273   dop_module = prefs_register_protocol_subtree("OSI/X.500", proto_dop, prefs_register_dop);
 274
 275   prefs_register_uint_preference(dop_module, "tcp.port", "DOP TCP Port",
 276                                  "Set the port for DOP operations (if other"
 277                                  " than the default of 102)",
 278                                  10, &global_dop_tcp_port);
 279
 280
 281 }
 282
 283
 284 /*--- proto_reg_handoff_dop --- */
 285 void proto_reg_handoff_dop(void) {
 286   dissector_handle_t dop_handle;
 287
 288 #include "packet-dop-dis-tab.c"
 289   /* APPLICATION CONTEXT */
 290
 291   oid_add_from_string("id-ac-directory-operational-binding-management","2.5.3.3");
 292
 293   /* ABSTRACT SYNTAXES */
 294
 295   /* Register DOP with ROS (with no use of RTSE) */
 296   dop_handle = find_dissector("dop");
 297   register_ros_oid_dissector_handle("2.5.9.4", dop_handle, 0, "id-as-directory-operational-binding-management", FALSE);
 298
 299   /* BINDING TYPES */
 300
 301   oid_add_from_string("shadow-agreement","2.5.19.1");
 302   oid_add_from_string("hierarchical-agreement","2.5.19.2");
 303   oid_add_from_string("non-specific-hierarchical-agreement","2.5.19.3");
 304
 305   /* ACCESS CONTROL SCHEMES */
 306   oid_add_from_string("basic-ACS","2.5.28.1");
 307   oid_add_from_string("simplified-ACS","2.5.28.2");
 308   oid_add_from_string("ruleBased-ACS","2.5.28.3");
 309   oid_add_from_string("ruleAndBasic-ACS","2.5.28.4");
 310   oid_add_from_string("ruleAndSimple-ACS","2.5.28.5");
 311
 312   /* ADMINISTRATIVE ROLES */
 313   oid_add_from_string("id-ar-autonomousArea","2.5.23.1");
 314   oid_add_from_string("id-ar-accessControlSpecificArea","2.5.23.2");
 315   oid_add_from_string("id-ar-accessControlInnerArea","2.5.23.3");
 316   oid_add_from_string("id-ar-subschemaAdminSpecificArea","2.5.23.4");
 317   oid_add_from_string("id-ar-collectiveAttributeSpecificArea","2.5.23.5");
 318   oid_add_from_string("id-ar-collectiveAttributeInnerArea","2.5.23.6");
 319   oid_add_from_string("id-ar-contextDefaultSpecificArea","2.5.23.7");
 320   oid_add_from_string("id-ar-serviceSpecificArea","2.5.23.8");
 321
 322   /* remember the tpkt handler for change in preferences */
 323   tpkt_handle = find_dissector("tpkt");
 324
 325 }
 326
 327 void prefs_register_dop(void) {
 328   static guint tcp_port = 0;
 329
 330   /* de-register the old port */
 331   /* port 102 is registered by TPKT - don't undo this! */
 332   if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle)
 333     dissector_delete("tcp.port", tcp_port, tpkt_handle);
 334
 335   /* Set our port number for future use */
 336   tcp_port = global_dop_tcp_port;
 337
 338   if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle)
 339     dissector_add("tcp.port", tcp_port, tpkt_handle);
 340
 341 }