/* packet-x411.c * Routines for X.411 (X.400 Message Transfer) packet dissection * Graeme Lunt 2005 * * $Id$ * * 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 "packet-ber.h" #include "packet-acse.h" #include "packet-ros.h" #include "packet-rtse.h" #include "packet-x509af.h" #include "packet-x509ce.h" #include "packet-x509if.h" #include "packet-x509sat.h" #include "packet-x411.h" #include #include #define PNAME "X.411 Message Transfer Service" #define PSNAME "X411" #define PFNAME "x411" /* Initialize the protocol and registered fields */ int proto_x411 = -1; static struct SESSION_DATA_STRUCTURE* session = NULL; static int extension_id = -1; /* integer extension id */ static const char *object_identifier_id; /* extensions identifier */ static const char *content_type_id; /* content type identifier */ #define MAX_ORA_STR_LEN 256 static char *oraddress = NULL; static gboolean doing_address=FALSE; static proto_item *address_item; static proto_tree *top_tree=NULL; static int call_x411_oid_callback(char *base_oid, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree); #include "packet-x411-hf.c" /* Initialize the subtree pointers */ static gint ett_x411 = -1; #include "packet-x411-ett.c" #include "packet-x411-fn.c" static int call_x411_oid_callback(char *base_oid, tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree) { const char *name = NULL; char extension_oid[BER_MAX_OID_STR_LEN]; sprintf(extension_oid, "%s.%d", base_oid, extension_id); name = get_ber_oid_name(extension_oid); proto_item_append_text(tree, " (%s)", name ? name : extension_oid); return call_ber_oid_callback(extension_oid, tvb, offset, pinfo, tree); } /* * Dissect X411 MTS APDU */ int dissect_x411_mts_apdu (tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree) { proto_item *item=NULL; proto_tree *tree=NULL; /* save parent_tree so subdissectors can create new top nodes */ top_tree=parent_tree; if(parent_tree){ item = proto_tree_add_item(parent_tree, proto_x411, tvb, 0, -1, FALSE); tree = proto_item_add_subtree(item, ett_x411); } if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "P1"); if (check_col(pinfo->cinfo, COL_INFO)) col_set_str(pinfo->cinfo, COL_INFO, "Transfer"); return dissect_x411_MTS_APDU (FALSE, tvb, 0, pinfo, tree, hf_x411_MTS_APDU_PDU); } /* * Dissect X411 PDUs inside a PPDU. */ static void dissect_x411(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 (*x411_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, int hf_index _U_) = NULL; char *x411_op_name; int hf_x411_index; /* save parent_tree so subdissectors can create new top nodes */ top_tree=parent_tree; /* 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_x411, tvb, 0, -1, FALSE); tree = proto_item_add_subtree(item, ett_x411); } if (check_col(pinfo->cinfo, COL_PROTOCOL)) col_set_str(pinfo->cinfo, COL_PROTOCOL, "P1"); 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 */ x411_dissector = dissect_x411_MTABindArgument; x411_op_name = "Bind-Argument"; hf_x411_index = hf_x411_MTABindArgument_PDU; break; case (ROS_OP_BIND | ROS_OP_RESULT): /* BindResult */ x411_dissector = dissect_x411_MTABindResult; x411_op_name = "Bind-Result"; hf_x411_index = hf_x411_MTABindResult_PDU; break; case (ROS_OP_BIND | ROS_OP_ERROR): /* BindError */ x411_dissector = dissect_x411_MTABindError; x411_op_name = "Bind-Error"; hf_x411_index = hf_x411_MTABindError_PDU; break; case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /* Invoke Argument */ x411_dissector = dissect_x411_MTS_APDU; x411_op_name = "Transfer"; hf_x411_index = hf_x411_MTS_APDU_PDU; break; default: proto_tree_add_text(tree, tvb, offset, -1,"Unsupported X411 PDU"); return; } if (check_col(pinfo->cinfo, COL_INFO)) col_add_str(pinfo->cinfo, COL_INFO, x411_op_name); while (tvb_reported_length_remaining(tvb, offset) > 0){ old_offset=offset; offset=(*x411_dissector)(FALSE, tvb, offset, pinfo , tree, hf_x411_index); if(offset == old_offset){ proto_tree_add_text(tree, tvb, offset, -1,"Internal error, zero-byte X411 PDU"); offset = tvb_length(tvb); break; } } } /*--- proto_register_x411 -------------------------------------------*/ void proto_register_x411(void) { /* List of fields */ static hf_register_info hf[] = { #include "packet-x411-hfarr.c" }; /* List of subtrees */ static gint *ett[] = { &ett_x411, #include "packet-x411-ettarr.c" }; /* Register protocol */ proto_x411 = proto_register_protocol(PNAME, PSNAME, PFNAME); register_dissector("x411", dissect_x411, proto_x411); /* Register fields and subtrees */ proto_register_field_array(proto_x411, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); } /*--- proto_reg_handoff_x411 --- */ void proto_reg_handoff_x411(void) { dissector_handle_t handle = NULL; #include "packet-x411-dis-tab.c" /* APPLICATION CONTEXT */ register_ber_oid_name("2.6.0.1.6", "id-ac-mts-transfer"); /* ABSTRACT SYNTAXES */ if((handle = find_dissector("x411")) != NULL) { register_rtse_oid_dissector_handle("2.6.0.2.12", handle, 0, "id-as-mta-rtse", TRUE); register_rtse_oid_dissector_handle("2.6.0.2.7", handle, 0, "id-as-mtse", FALSE); register_rtse_oid_dissector_handle("applicationProtocol.1", handle, 0, "mts-transfer-protocol-1984", FALSE); register_rtse_oid_dissector_handle("applicationProtocol.12", handle, 0, "mta-transfer-protocol", FALSE); } }