/* packet-disp.c * Routines for X.525 (X.500 Directory Shadow Asbtract Service) and X.519 DISP packet dissection * Graeme Lunt 2005 * * $Id: packet-disp-template.c 27390 2009-02-07 14:33:47Z wmeier $ * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #include #include "packet-ber.h" #include "packet-acse.h" #include "packet-ros.h" #include "packet-rtse.h" #include "packet-x509if.h" #include "packet-x509af.h" #include "packet-x509sat.h" #include "packet-crmf.h" #include "packet-dop.h" #include "packet-dap.h" #include "packet-dsp.h" #include "packet-disp.h" /* we don't have a separate dissector for X519 - and most of DISP is defined in X525 */ #define PNAME "X.519 Directory Information Shadowing Protocol" #define PSNAME "DISP" #define PFNAME "disp" static guint global_disp_tcp_port = 102; static dissector_handle_t tpkt_handle; void prefs_register_disp(void); /* forward declaration for use in preferences registration */ /* Initialize the protocol and registered fields */ int proto_disp = -1; static struct SESSION_DATA_STRUCTURE* session = NULL; #include "packet-disp-hf.c" /* Initialize the subtree pointers */ static gint ett_disp = -1; #include "packet-disp-ett.c" #include "packet-disp-fn.c" /* * Dissect DISP PDUs inside a ROS PDUs */ static void dissect_disp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree) { int offset = 0; int old_offset; proto_item *item=NULL; proto_tree *tree=NULL; int (*disp_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index _U_) = NULL; char *disp_op_name; asn1_ctx_t asn1_ctx; asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); /* do we have operation information from the ROS dissector? */ if( !pinfo->private_data ){ if(parent_tree){ proto_tree_add_text(parent_tree, tvb, offset, -1, "Internal error: can't get operation information from ROS dissector."); } return ; } else { session = ( (struct SESSION_DATA_STRUCTURE*)(pinfo->private_data) ); } if(parent_tree){ item = proto_tree_add_item(parent_tree, proto_disp, tvb, 0, -1, FALSE); tree = proto_item_add_subtree(item, ett_disp); } if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "DISP"); if (check_col(pinfo->cinfo, COL_INFO)) col_clear(pinfo->cinfo, COL_INFO); switch(session->ros_op & ROS_OP_MASK) { case (ROS_OP_BIND | ROS_OP_ARGUMENT): /* BindInvoke */ disp_dissector = dissect_disp_DSAShadowBindArgument; disp_op_name = "Shadow-Bind-Argument"; break; case (ROS_OP_BIND | ROS_OP_RESULT): /* BindResult */ disp_dissector = dissect_disp_DSAShadowBindResult; disp_op_name = "Shadow-Bind-Result"; break; case (ROS_OP_BIND | ROS_OP_ERROR): /* BindError */ disp_dissector = dissect_disp_DSAShadowBindError; disp_op_name = "Shadow-Bind-Error"; break; case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /* Invoke Argument */ switch(session->ros_op & ROS_OP_OPCODE_MASK) { case 1: /* requestShadowUpdate */ disp_dissector = dissect_disp_RequestShadowUpdateArgument; disp_op_name = "Request-Shadow-Update-Argument"; break; case 2: /* updateShadow*/ disp_dissector = dissect_disp_UpdateShadowArgument; disp_op_name = "Update-Shadow-Argument"; break; case 3: /* coordinateShadowUpdate */ disp_dissector = dissect_disp_CoordinateShadowUpdateArgument; disp_op_name = "Coordinate-Shadow-Update-Argument"; break; default: proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP opcode (%d)", session->ros_op & ROS_OP_OPCODE_MASK); break; } break; case (ROS_OP_INVOKE | ROS_OP_RESULT): /* Return Result */ switch(session->ros_op & ROS_OP_OPCODE_MASK) { case 1: /* requestShadowUpdate */ disp_dissector = dissect_disp_RequestShadowUpdateResult; disp_op_name = "Request-Shadow-Result"; break; case 2: /* updateShadow */ disp_dissector = dissect_disp_UpdateShadowResult; disp_op_name = "Update-Shadow-Result"; break; case 3: /* coordinateShadowUpdate */ disp_dissector = dissect_disp_CoordinateShadowUpdateResult; disp_op_name = "Coordinate-Shadow-Update-Result"; break; default: proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP opcode (%d)", session->ros_op & ROS_OP_OPCODE_MASK); break; } break; case (ROS_OP_INVOKE | ROS_OP_ERROR): /* Return Error */ switch(session->ros_op & ROS_OP_OPCODE_MASK) { case 1: /* shadowError */ disp_dissector = dissect_disp_ShadowError; disp_op_name = "Shadow-Error"; break; default: proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP errcode (%d)", session->ros_op & ROS_OP_OPCODE_MASK); break; } break; default: proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DISP PDU"); return; } if(disp_dissector) { if (check_col(pinfo->cinfo, COL_INFO)) col_set_str(pinfo->cinfo, COL_INFO, disp_op_name); while (tvb_reported_length_remaining(tvb, offset) > 0){ old_offset=offset; offset=(*disp_dissector)(FALSE, tvb, offset, &asn1_ctx, tree, -1); if(offset == old_offset){ proto_tree_add_text(tree, tvb, offset, -1,"Internal error, zero-byte DISP PDU"); offset = tvb_length(tvb); break; } } } } /*--- proto_register_disp -------------------------------------------*/ void proto_register_disp(void) { /* List of fields */ static hf_register_info hf[] = { #include "packet-disp-hfarr.c" }; /* List of subtrees */ static gint *ett[] = { &ett_disp, #include "packet-disp-ettarr.c" }; module_t *disp_module; /* Register protocol */ proto_disp = proto_register_protocol(PNAME, PSNAME, PFNAME); register_dissector("disp", dissect_disp, proto_disp); /* Register fields and subtrees */ proto_register_field_array(proto_disp, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); /* Register our configuration options for DISP, particularly our port */ disp_module = prefs_register_protocol_subtree("OSI/X.500", proto_disp, prefs_register_disp); prefs_register_uint_preference(disp_module, "tcp.port", "DISP TCP Port", "Set the port for DISP operations (if other" " than the default of 102)", 10, &global_disp_tcp_port); } /*--- proto_reg_handoff_disp --- */ void proto_reg_handoff_disp(void) { dissector_handle_t disp_handle; #include "packet-disp-dis-tab.c" /* APPLICATION CONTEXT */ oid_add_from_string("id-ac-shadow-consumer-initiated","2.5.3.4"); oid_add_from_string("id-ac-shadow-supplier-initiated","2.5.3.5"); oid_add_from_string("id-ac-reliable-shadow-consumer-initiated","2.5.3.6"); oid_add_from_string("id-ac-reliable-shadow-supplier-initiated","2.5.3.7"); /* ABSTRACT SYNTAXES */ disp_handle = find_dissector("disp"); register_ros_oid_dissector_handle("2.5.9.3", disp_handle, 0, "id-as-directory-shadow", FALSE); register_rtse_oid_dissector_handle("2.5.9.5", disp_handle, 0, "id-as-directory-reliable-shadow", FALSE); register_rtse_oid_dissector_handle("2.5.9.6", disp_handle, 0, "id-as-directory-reliable-binding", FALSE); /* OPERATIONAL BINDING */ oid_add_from_string("id-op-binding-shadow","2.5.1.0.5.1"); tpkt_handle = find_dissector("tpkt"); /* DNs */ x509if_register_fmt(hf_disp_contextPrefix, "cp="); } void prefs_register_disp(void) { static guint tcp_port = 0; /* de-register the old port */ /* port 102 is registered by TPKT - don't undo this! */ if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle) dissector_delete("tcp.port", tcp_port, tpkt_handle); /* Set our port number for future use */ tcp_port = global_disp_tcp_port; if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle) dissector_add("tcp.port", global_disp_tcp_port, tpkt_handle); }