/* packet-dsp.c * Routines for X.518 (X.500 Distributed Operations) packet dissection * Graeme Lunt 2005 * * $Id$ * * Ethereal - 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 "packet-ber.h" #include "packet-acse.h" #include "packet-ros.h" #include "packet-x509if.h" #include "packet-x509af.h" #include "packet-x509sat.h" #include "packet-dap.h" #include "packet-dsp.h" #define PNAME "X.519 Directory System Protocol" #define PSNAME "DSP" #define PFNAME "dsp" static guint global_dsp_tcp_port = 102; static guint tcp_port = 0; static dissector_handle_t tpkt_handle = NULL; void prefs_register_dsp(void); /* forwad declaration for use in preferences registration */ /* Initialize the protocol and registered fields */ int proto_dsp = -1; static struct SESSION_DATA_STRUCTURE* session = NULL; #include "packet-dsp-hf.c" /* Initialize the subtree pointers */ static gint ett_dsp = -1; #include "packet-dsp-ett.c" #include "packet-dsp-fn.c" /* * Dissect X518 PDUs inside a ROS PDUs */ static void dissect_dsp(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 (*dsp_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, int hf_index _U_) = NULL; char *dsp_op_name; /* 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_dsp, tvb, 0, -1, FALSE); tree = proto_item_add_subtree(item, ett_dsp); } if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "DAP"); 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 */ dsp_dissector = dissect_dsp_DSASystemBindArgument; dsp_op_name = "System-Bind-Argument"; break; case (ROS_OP_BIND | ROS_OP_RESULT): /* BindResult */ dsp_dissector = dissect_dsp_DSASystemBindResult; dsp_op_name = "System-Bind-Result"; break; case (ROS_OP_BIND | ROS_OP_ERROR): /* BindError */ dsp_dissector = dissect_dsp_DSASystemBindError; dsp_op_name = "System-Bind-Error"; break; case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /* Invoke Argument */ switch(session->ros_op & ROS_OP_OPCODE_MASK) { case 1: /* read */ dsp_dissector = dissect_dsp_ChainedReadArgument; dsp_op_name = "Chained-Read-Argument"; break; case 2: /* compare */ dsp_dissector = dissect_dsp_ChainedCompareArgument; dsp_op_name = "Chained-Compare-Argument"; break; case 3: /* abandon */ dsp_dissector = dissect_dsp_ChainedAbandonArgument; dsp_op_name = "Chained-Abandon-Argument"; break; case 4: /* list */ dsp_dissector = dissect_dsp_ChainedListArgument; dsp_op_name = "Chained-List-Argument"; break; case 5: /* search */ dsp_dissector = dissect_dsp_ChainedSearchArgument; dsp_op_name = "Chained-Search-Argument"; break; case 6: /* addEntry */ dsp_dissector = dissect_dsp_ChainedAddEntryArgument; dsp_op_name = "Chained-Add-Entry-Argument"; break; case 7: /* removeEntry */ dsp_dissector = dissect_dsp_ChainedRemoveEntryArgument; dsp_op_name = "Chained-Remove-Entry-Argument"; break; case 8: /* modifyEntry */ dsp_dissector = dissect_dsp_ChainedModifyEntryArgument; dsp_op_name = "ChainedModify-Entry-Argument"; break; case 9: /* modifyDN */ dsp_dissector = dissect_dsp_ChainedModifyDNArgument; dsp_op_name = "ChainedModify-DN-Argument"; break; default: proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DSP 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: /* read */ dsp_dissector = dissect_dsp_ChainedReadResult; dsp_op_name = "Chained-Read-Result"; break; case 2: /* compare */ dsp_dissector = dissect_dsp_ChainedCompareResult; dsp_op_name = "Chained-Compare-Result"; break; case 3: /* abandon */ dsp_dissector = dissect_dsp_ChainedAbandonResult; dsp_op_name = "Chained-Abandon-Result"; break; case 4: /* list */ dsp_dissector = dissect_dsp_ChainedListResult; dsp_op_name = "Chained-List-Result"; break; case 5: /* search */ dsp_dissector = dissect_dsp_ChainedSearchResult; dsp_op_name = "Chained-Search-Result"; break; case 6: /* addEntry */ dsp_dissector = dissect_dsp_ChainedAddEntryResult; dsp_op_name = "Chained-Add-Entry-Result"; break; case 7: /* removeEntry */ dsp_dissector = dissect_dsp_ChainedRemoveEntryResult; dsp_op_name = "Chained-Remove-Entry-Result"; break; case 8: /* modifyEntry */ dsp_dissector = dissect_dsp_ChainedModifyEntryResult; dsp_op_name = "Chained-Modify-Entry-Result"; break; case 9: /* modifyDN */ dsp_dissector = dissect_dsp_ChainedModifyDNResult; dsp_op_name = "ChainedModify-DN-Result"; break; default: proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DSP opcode"); break; } break; case (ROS_OP_INVOKE | ROS_OP_ERROR): /* Return Error */ switch(session->ros_op & ROS_OP_OPCODE_MASK) { case 1: /* attributeError */ dsp_dissector = dissect_dap_AttributeError; dsp_op_name = "Attribute-Error"; break; case 2: /* nameError */ dsp_dissector = dissect_dap_NameError; dsp_op_name = "Name-Error"; break; case 3: /* serviceError */ dsp_dissector = dissect_dap_ServiceError; dsp_op_name = "Service-Error"; break; case 4: /* referral */ dsp_dissector = dissect_dap_Referral; dsp_op_name = "Referral"; break; case 5: /* abandoned */ dsp_dissector = dissect_dap_Abandoned; dsp_op_name = "Abandoned"; break; case 6: /* securityError */ dsp_dissector = dissect_dap_SecurityError; dsp_op_name = "Security-Error"; break; case 7: /* abandonFailed */ dsp_dissector = dissect_dap_AbandonFailedError; dsp_op_name = "Abandon-Failed-Error"; break; case 8: /* updateError */ dsp_dissector = dissect_dap_UpdateError; dsp_op_name = "Update-Error"; break; case 9: /* DSAReferral */ dsp_dissector = dissect_dsp_DSAReferral; dsp_op_name = "DSA-Referral"; break; default: proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DSP errcode"); break; } break; default: proto_tree_add_text(tree, tvb, offset, -1,"Unsupported DSP PDU"); return; } if(dsp_dissector) { if (check_col(pinfo->cinfo, COL_INFO)) col_add_str(pinfo->cinfo, COL_INFO, dsp_op_name); while (tvb_reported_length_remaining(tvb, offset) > 0){ old_offset=offset; offset=(*dsp_dissector)(FALSE, tvb, offset, pinfo , tree, -1); if(offset == old_offset){ proto_tree_add_text(tree, tvb, offset, -1,"Internal error, zero-byte DSP PDU"); offset = tvb_length(tvb); break; } } } } /*--- proto_register_dsp -------------------------------------------*/ void proto_register_dsp(void) { /* List of fields */ static hf_register_info hf[] = { #include "packet-dsp-hfarr.c" }; /* List of subtrees */ static gint *ett[] = { &ett_dsp, #include "packet-dsp-ettarr.c" }; module_t *dsp_module; /* Register protocol */ proto_dsp = proto_register_protocol(PNAME, PSNAME, PFNAME); /* initially disable the protocol */ proto_set_decoding(proto_dsp, FALSE); register_dissector("dsp", dissect_dsp, proto_dsp); /* Register fields and subtrees */ proto_register_field_array(proto_dsp, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); /* Register our configuration options for DSP, particularly our port */ #ifdef PREFERENCE_GROUPING dsp_module = prefs_register_protocol_subtree("OSI/X.500", proto_dsp, prefs_register_dsp); #else dsp_module = prefs_register_protocol(proto_dsp, prefs_register_dsp); #endif prefs_register_uint_preference(dsp_module, "tcp.port", "DSP TCP Port", "Set the port for DSP operations (if other" " than the default of 102)", 10, &global_dsp_tcp_port); } /*--- proto_reg_handoff_dsp --- */ void proto_reg_handoff_dsp(void) { dissector_handle_t handle = NULL; #include "packet-dsp-dis-tab.c" /* APPLICATION CONTEXT */ register_ber_oid_name("2.5.3.2", "id-ac-directory-system"); /* ABSTRACT SYNTAXES */ /* Register DSP with ROS (with no use of RTSE) */ if((handle = find_dissector("dsp"))) { register_ros_oid_dissector_handle("2.5.9.2", handle, 0, "id-as-directory-system", FALSE); } } void prefs_register_dsp(void) { /* de-register the old port */ /* port 102 is registered by TPKT - don't undo this! */ if((tcp_port != 102) && tpkt_handle) dissector_delete("tcp.port", tcp_port, tpkt_handle); /* Set our port number for future use */ tcp_port = global_dsp_tcp_port; if((tcp_port > 0) && (tcp_port != 102) && tpkt_handle) dissector_add("tcp.port", global_dsp_tcp_port, tpkt_handle); }