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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include "config.h"
  27
  28 #include <glib.h>
  29 #include <epan/packet.h>
  30 #include <epan/prefs.h>
  31 #include <epan/oids.h>
  32 #include <epan/asn1.h>
  33 #include <epan/expert.h>
  34 #include <epan/wmem/wmem.h>
  35
  36 #include "packet-ber.h"
  37 #include "packet-acse.h"
  38 #include "packet-ros.h"
  39
  40 #include "packet-x509sat.h"
  41 #include "packet-x509af.h"
  42 #include "packet-x509if.h"
  43 #include "packet-dap.h"
  44 #include "packet-dsp.h"
  45 #include "packet-crmf.h"
  46
  47
  48 #include "packet-dop.h"
  49
  50 #define PNAME  "X.501 Directory Operational Binding Management Protocol"
  51 #define PSNAME "DOP"
  52 #define PFNAME "dop"
  53
  54 void proto_register_dop(void);
  55 void proto_reg_handoff_dop(void);
  56
  57 static guint global_dop_tcp_port = 102;
  58 static dissector_handle_t tpkt_handle;
  59 static void prefs_register_dop(void); /* forward declaration for use in preferences registration */
  60
  61 /* Initialize the protocol and registered fields */
  62 static int proto_dop = -1;
  63
  64 static const char *binding_type = NULL; /* binding_type */
  65
  66 static int call_dop_oid_callback(const char *base_string, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, const char *col_info, void* data);
  67
  68 #include "packet-dop-hf.c"
  69
  70 /* Initialize the subtree pointers */
  71 static gint ett_dop = -1;
  72 static gint ett_dop_unknown = -1;
  73 #include "packet-dop-ett.c"
  74
  75 static expert_field ei_dop_unknown_binding_parameter = EI_INIT;
  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     name = oid_resolved_from_string(oid);
  85     col_append_fstr(pinfo->cinfo, COL_INFO, " %s", name ? name : oid);
  86 }
  87
  88 #include "packet-dop-fn.c"
  89
  90 static int
  91 call_dop_oid_callback(const char *base_string, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, const char *col_info, void* data)
  92 {
  93   char* binding_param;
  94
  95   binding_param = wmem_strdup_printf(wmem_packet_scope(), "%s.%s", base_string, binding_type ? binding_type : "");
  96
  97   col_append_fstr(pinfo->cinfo, COL_INFO, " %s", col_info);
  98
  99   if (dissector_try_string(dop_dissector_table, binding_param, tvb, pinfo, tree, data)) {
 100      offset = tvb_reported_length (tvb);
 101   } else {
 102      proto_item *item=NULL;
 103      proto_tree *next_tree=NULL;
 104
 105      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>");
 106      if (item) {
 107         next_tree = proto_item_add_subtree(item, ett_dop_unknown);
 108      }
 109      offset = dissect_unknown_ber(pinfo, tvb, offset, next_tree);
 110      expert_add_info(pinfo, item, &ei_dop_unknown_binding_parameter);
 111    }
 112
 113    return offset;
 114 }
 115
 116
 117 /*
 118 * Dissect DOP PDUs inside a ROS PDUs
 119 */
 120 static int
 121 dissect_dop(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data)
 122 {
 123         int offset = 0;
 124         int old_offset;
 125         proto_item *item;
 126         proto_tree *tree;
 127         struct SESSION_DATA_STRUCTURE* session;
 128         int (*dop_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index _U_) = NULL;
 129         const char *dop_op_name;
 130         asn1_ctx_t asn1_ctx;
 131
 132         asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo);
 133
 134         /* do we have operation information from the ROS dissector?  */
 135         if( data == NULL ){
 136                 if(parent_tree){
 137                         proto_tree_add_text(parent_tree, tvb, offset, -1,
 138                                 "Internal error: can't get operation information from ROS dissector.");
 139                 }
 140                 return  0;
 141         }
 142
 143         session = ( (struct SESSION_DATA_STRUCTURE*)data );
 144
 145         item = proto_tree_add_item(parent_tree, proto_dop, tvb, 0, -1, ENC_NA);
 146         tree = proto_item_add_subtree(item, ett_dop);
 147
 148         col_set_str(pinfo->cinfo, COL_PROTOCOL, "DOP");
 149         col_clear(pinfo->cinfo, COL_INFO);
 150
 151         asn1_ctx.private_data = session;
 152
 153         switch(session->ros_op & ROS_OP_MASK) {
 154         case (ROS_OP_BIND | ROS_OP_ARGUMENT):   /*  BindInvoke */
 155           dop_dissector = dissect_dop_DSAOperationalManagementBindArgument;
 156           dop_op_name = "DSA-Operational-Bind-Argument";
 157           break;
 158         case (ROS_OP_BIND | ROS_OP_RESULT):     /*  BindResult */
 159           dop_dissector = dissect_dop_DSAOperationalManagementBindResult;
 160           dop_op_name = "DSA-Operational-Bind-Result";
 161           break;
 162         case (ROS_OP_BIND | ROS_OP_ERROR):      /*  BindError */
 163           dop_dissector = dissect_dop_DSAOperationalManagementBindError;
 164           dop_op_name = "DSA-Operational-Management-Bind-Error";
 165           break;
 166         case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /*  Invoke Argument */
 167           switch(session->ros_op & ROS_OP_OPCODE_MASK) {
 168           case 100: /* establish */
 169             dop_dissector = dissect_dop_EstablishOperationalBindingArgument;
 170             dop_op_name = "Establish-Operational-Binding-Argument";
 171             break;
 172           case 101: /* terminate */
 173             dop_dissector = dissect_dop_TerminateOperationalBindingArgument;
 174             dop_op_name = "Terminate-Operational-Binding-Argument";
 175             break;
 176           case 102: /* modify */
 177             dop_dissector = dissect_dop_ModifyOperationalBindingArgument;
 178             dop_op_name = "Modify-Operational-Binding-Argument";
 179             break;
 180           default:
 181             proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP Argument opcode (%d)",
 182                                 session->ros_op & ROS_OP_OPCODE_MASK);
 183             break;
 184           }
 185           break;
 186         case (ROS_OP_INVOKE | ROS_OP_RESULT):   /*  Return Result */
 187           switch(session->ros_op & ROS_OP_OPCODE_MASK) {
 188           case 100: /* establish */
 189             dop_dissector = dissect_dop_EstablishOperationalBindingResult;
 190             dop_op_name = "Establish-Operational-Binding-Result";
 191             break;
 192           case 101: /* terminate */
 193             dop_dissector = dissect_dop_TerminateOperationalBindingResult;
 194             dop_op_name = "Terminate-Operational-Binding-Result";
 195             break;
 196           case 102: /* modify */
 197             dop_dissector = dissect_dop_ModifyOperationalBindingResult;
 198             dop_op_name = "Modify-Operational-Binding-Result";
 199             break;
 200           default:
 201             proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP Result opcode (%d)",
 202                                 session->ros_op & ROS_OP_OPCODE_MASK);
 203             break;
 204           }
 205           break;
 206         case (ROS_OP_INVOKE | ROS_OP_ERROR):    /*  Return Error */
 207           switch(session->ros_op & ROS_OP_OPCODE_MASK) {
 208           case 100: /* operational-binding */
 209             dop_dissector = dissect_dop_OpBindingErrorParam;
 210             dop_op_name = "Operational-Binding-Error";
 211             break;
 212           default:
 213             proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP Error opcode (%d)",
 214                                 session->ros_op & ROS_OP_OPCODE_MASK);
 215             break;
 216           }
 217           break;
 218         default:
 219           proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DOP PDU");
 220           return tvb_length(tvb);
 221         }
 222
 223         if(dop_dissector) {
 224       col_set_str(pinfo->cinfo, COL_INFO, dop_op_name);
 225
 226           while (tvb_reported_length_remaining(tvb, offset) > 0){
 227             old_offset=offset;
 228             offset=(*dop_dissector)(FALSE, tvb, offset, &asn1_ctx, tree, -1);
 229             if(offset == old_offset){
 230               proto_tree_add_text(tree, tvb, offset, -1,"Internal error, zero-byte DOP PDU");
 231               break;
 232             }
 233           }
 234         }
 235
 236         return tvb_length(tvb);
 237 }
 238
 239
 240
 241 /*--- proto_register_dop -------------------------------------------*/
 242 void proto_register_dop(void) {
 243
 244   /* List of fields */
 245   static hf_register_info hf[] =
 246   {
 247 #include "packet-dop-hfarr.c"
 248   };
 249
 250   /* List of subtrees */
 251   static gint *ett[] = {
 252     &ett_dop,
 253     &ett_dop_unknown,
 254 #include "packet-dop-ettarr.c"
 255   };
 256
 257   static ei_register_info ei[] = {
 258      { &ei_dop_unknown_binding_parameter, { "dop.unknown_binding_parameter", PI_UNDECODED, PI_WARN, "Unknown binding-parameter", EXPFILL }},
 259   };
 260
 261   expert_module_t* expert_dop;
 262   module_t *dop_module;
 263
 264   /* Register protocol */
 265   proto_dop = proto_register_protocol(PNAME, PSNAME, PFNAME);
 266
 267   new_register_dissector("dop", dissect_dop, proto_dop);
 268
 269   dop_dissector_table = register_dissector_table("dop.oid", "DOP OID Dissectors", FT_STRING, BASE_NONE);
 270
 271   /* Register fields and subtrees */
 272   proto_register_field_array(proto_dop, hf, array_length(hf));
 273   proto_register_subtree_array(ett, array_length(ett));
 274   expert_dop = expert_register_protocol(proto_dop);
 275   expert_register_field_array(expert_dop, ei, array_length(ei));
 276
 277   /* Register our configuration options for DOP, particularly our port */
 278
 279   dop_module = prefs_register_protocol_subtree("OSI/X.500", proto_dop, prefs_register_dop);
 280
 281   prefs_register_uint_preference(dop_module, "tcp.port", "DOP TCP Port",
 282                                  "Set the port for DOP operations (if other"
 283                                  " than the default of 102)",
 284                                  10, &global_dop_tcp_port);
 285
 286
 287 }
 288
 289
 290 /*--- proto_reg_handoff_dop --- */
 291 void proto_reg_handoff_dop(void) {
 292   dissector_handle_t dop_handle;
 293
 294 #include "packet-dop-dis-tab.c"
 295   /* APPLICATION CONTEXT */
 296
 297   oid_add_from_string("id-ac-directory-operational-binding-management","2.5.3.3");
 298
 299   /* ABSTRACT SYNTAXES */
 300
 301   /* Register DOP with ROS (with no use of RTSE) */
 302   dop_handle = find_dissector("dop");
 303   register_ros_oid_dissector_handle("2.5.9.4", dop_handle, 0, "id-as-directory-operational-binding-management", FALSE);
 304
 305   /* BINDING TYPES */
 306
 307   oid_add_from_string("shadow-agreement","2.5.19.1");
 308   oid_add_from_string("hierarchical-agreement","2.5.19.2");
 309   oid_add_from_string("non-specific-hierarchical-agreement","2.5.19.3");
 310
 311   /* ACCESS CONTROL SCHEMES */
 312   oid_add_from_string("basic-ACS","2.5.28.1");
 313   oid_add_from_string("simplified-ACS","2.5.28.2");
 314   oid_add_from_string("ruleBased-ACS","2.5.28.3");
 315   oid_add_from_string("ruleAndBasic-ACS","2.5.28.4");
 316   oid_add_from_string("ruleAndSimple-ACS","2.5.28.5");
 317
 318   /* ADMINISTRATIVE ROLES */
 319   oid_add_from_string("id-ar-autonomousArea","2.5.23.1");
 320   oid_add_from_string("id-ar-accessControlSpecificArea","2.5.23.2");
 321   oid_add_from_string("id-ar-accessControlInnerArea","2.5.23.3");
 322   oid_add_from_string("id-ar-subschemaAdminSpecificArea","2.5.23.4");
 323   oid_add_from_string("id-ar-collectiveAttributeSpecificArea","2.5.23.5");
 324   oid_add_from_string("id-ar-collectiveAttributeInnerArea","2.5.23.6");
 325   oid_add_from_string("id-ar-contextDefaultSpecificArea","2.5.23.7");
 326   oid_add_from_string("id-ar-serviceSpecificArea","2.5.23.8");
 327
 328   /* remember the tpkt handler for change in preferences */
 329   tpkt_handle = find_dissector("tpkt");
 330
 331 }
 332
 333 static void
 334 prefs_register_dop(void)
 335 {
 336   static guint tcp_port = 0;
 337
 338   /* de-register the old port */
 339   /* port 102 is registered by TPKT - don't undo this! */
 340   if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle)
 341     dissector_delete_uint("tcp.port", tcp_port, tpkt_handle);
 342
 343   /* Set our port number for future use */
 344   tcp_port = global_dop_tcp_port;
 345
 346   if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle)
 347     dissector_add_uint("tcp.port", tcp_port, tpkt_handle);
 348
 349 }