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