forked from osmocom/wireshark
220 lines
12 KiB
C
220 lines
12 KiB
C
/******************************************************************************
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** Copyright (C) 2006-2009 ascolab GmbH. All Rights Reserved.
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** Web: http://www.ascolab.com
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**
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** This program is free software; you can redistribute it and/or
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** modify it under the terms of the GNU General Public License
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** as published by the Free Software Foundation; either version 2
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** of the License, or (at your option) any later version.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** Project: OpcUa Wireshark Plugin
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**
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** Description: OpcUa Transport Layer Decoder.
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**
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** Author: Gerhard Gappmeier <gerhard.gappmeier@ascolab.com>
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** Last change by: $Author: gergap $
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**
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******************************************************************************/
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#include "config.h"
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#include <glib.h>
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#include <epan/packet.h>
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#include "opcua_security_layer.h"
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#include "opcua_application_layer.h"
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#include "opcua_simpletypes.h"
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#include "opcua_transport_layer.h"
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#include "opcua_servicetable.h"
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static int hf_opcua_transport_type = -1;
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static int hf_opcua_transport_chunk = -1;
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static int hf_opcua_transport_size = -1;
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static int hf_opcua_transport_ver = -1;
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static int hf_opcua_transport_scid = -1;
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static int hf_opcua_transport_rbs = -1;
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static int hf_opcua_transport_sbs = -1;
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static int hf_opcua_transport_mms = -1;
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static int hf_opcua_transport_mcc = -1;
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static int hf_opcua_transport_endpoint = -1;
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static int hf_opcua_transport_error = -1;
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static int hf_opcua_transport_reason = -1;
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static int hf_opcua_transport_spu = -1;
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static int hf_opcua_transport_scert = -1;
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static int hf_opcua_transport_rcthumb = -1;
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static int hf_opcua_transport_seq = -1;
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static int hf_opcua_transport_rqid = -1;
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/** subtree types */
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extern gint ett_opcua_nodeid;
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extern gint ett_opcua_extensionobject;
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/** Register transport layer types. */
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void registerTransportLayerTypes(int proto)
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{
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static hf_register_info hf[] =
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{
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/* id full name abbreviation type display strings bitmask blurb HFILL */
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{&hf_opcua_transport_type, {"Message Type", "opcua.transport.type", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_chunk, {"Chunk Type", "opcua.transport.chunk", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_size, {"Message Size", "opcua.transport.size", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_ver, {"Version", "opcua.transport.ver", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_scid, {"SecureChannelId", "opcua.transport.scid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_rbs, {"ReceiveBufferSize", "opcua.transport.rbs", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_sbs, {"SendBufferSize", "opcua.transport.sbs", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_mms, {"MaxMessageSize", "opcua.transport.mms", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_mcc, {"MaxChunkCount", "opcua.transport.mcc", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_endpoint, {"EndPointUrl", "opcua.transport.endpoint", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_error, {"Error", "opcua.transport.error", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_reason, {"Reason", "opcua.transport.reason", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_spu, {"SecurityPolicyUri", "opcua.security.spu", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_scert, {"SenderCertificate", "opcua.security.scert", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_rcthumb, {"ReceiverCertificateThumbprint", "opcua.security.rcthumb", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_seq, {"SequenceNumber", "opcua.security.seq", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
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{&hf_opcua_transport_rqid, {"RequestId", "opcua.security.rqid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}},
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};
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proto_register_field_array(proto, hf, array_length(hf));
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}
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/* Transport Layer: message parsers */
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int parseHello(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
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{
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proto_tree_add_item(tree, hf_opcua_transport_type, tvb, *pOffset, 3, ENC_ASCII|ENC_NA); *pOffset+=3;
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proto_tree_add_item(tree, hf_opcua_transport_chunk, tvb, *pOffset, 1, ENC_ASCII|ENC_NA); *pOffset+=1;
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proto_tree_add_item(tree, hf_opcua_transport_size, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_ver, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_rbs, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_sbs, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_mms, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_mcc, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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parseString(tree, tvb, pOffset, hf_opcua_transport_endpoint);
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return -1;
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}
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int parseAcknowledge(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
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{
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proto_tree_add_item(tree, hf_opcua_transport_type, tvb, *pOffset, 3, ENC_ASCII|ENC_NA); *pOffset+=3;
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proto_tree_add_item(tree, hf_opcua_transport_chunk, tvb, *pOffset, 1, ENC_ASCII|ENC_NA); *pOffset+=1;
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proto_tree_add_item(tree, hf_opcua_transport_size, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_ver, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_rbs, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_sbs, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_mms, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_mcc, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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return -1;
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}
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int parseError(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
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{
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proto_tree_add_item(tree, hf_opcua_transport_type, tvb, *pOffset, 3, ENC_ASCII|ENC_NA); *pOffset+=3;
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proto_tree_add_item(tree, hf_opcua_transport_chunk, tvb, *pOffset, 1, ENC_ASCII|ENC_NA); *pOffset+=1;
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proto_tree_add_item(tree, hf_opcua_transport_size, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_error, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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parseString(tree, tvb, pOffset, hf_opcua_transport_reason);
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return -1;
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}
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int parseMessage(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
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{
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proto_tree_add_item(tree, hf_opcua_transport_type, tvb, *pOffset, 3, ENC_ASCII|ENC_NA); *pOffset+=3;
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proto_tree_add_item(tree, hf_opcua_transport_chunk, tvb, *pOffset, 1, ENC_ASCII|ENC_NA); *pOffset+=1;
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proto_tree_add_item(tree, hf_opcua_transport_size, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_scid, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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/* message data contains the security layer */
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parseSecurityLayer(tree, tvb, pOffset);
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return -1;
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}
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int parseService(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
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{
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proto_item *ti;
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proto_item *ti_inner;
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proto_tree *encobj_tree;
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proto_tree *nodeid_tree;
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int ServiceId = 0;
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/* AT THE MOMENT NO SECURITY IS IMPLEMENTED IN UA.
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* WE CAN JUST JUMP INTO THE APPLICATION LAYER DATA.
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* THIS WILL CHAHNGE IN THE FUTURE. */
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/* add encodeable object subtree */
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encobj_tree = proto_tree_add_subtree(tree, tvb, *pOffset, -1, ett_opcua_extensionobject, &ti, "OpcUa Service : Encodeable Object");
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/* add nodeid subtree */
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nodeid_tree = proto_tree_add_subtree(encobj_tree, tvb, *pOffset, -1, ett_opcua_nodeid, &ti_inner, "TypeId : ExpandedNodeId");
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ServiceId = parseServiceNodeId(nodeid_tree, tvb, pOffset);
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proto_item_set_end(ti_inner, tvb, *pOffset);
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dispatchService(encobj_tree, tvb, pOffset, ServiceId);
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proto_item_set_end(ti, tvb, *pOffset);
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return ServiceId;
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}
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int parseOpenSecureChannel(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
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{
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proto_item *ti;
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proto_item *ti_inner;
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proto_tree *encobj_tree;
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proto_tree *nodeid_tree;
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int ServiceId = 0;
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proto_tree_add_item(tree, hf_opcua_transport_type, tvb, *pOffset, 3, ENC_ASCII|ENC_NA); *pOffset+=3;
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proto_tree_add_item(tree, hf_opcua_transport_chunk, tvb, *pOffset, 1, ENC_ASCII|ENC_NA); *pOffset+=1;
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proto_tree_add_item(tree, hf_opcua_transport_size, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_scid, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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parseString(tree, tvb, pOffset, hf_opcua_transport_spu);
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parseByteString(tree, tvb, pOffset, hf_opcua_transport_scert);
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parseByteString(tree, tvb, pOffset, hf_opcua_transport_rcthumb);
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proto_tree_add_item(tree, hf_opcua_transport_seq, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_rqid, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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/* add encodeable object subtree */
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encobj_tree = proto_tree_add_subtree(tree, tvb, *pOffset, -1, ett_opcua_extensionobject, &ti, "Message : Encodeable Object");
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/* add nodeid subtree */
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nodeid_tree = proto_tree_add_subtree(encobj_tree, tvb, *pOffset, -1, ett_opcua_nodeid, &ti_inner, "TypeId : ExpandedNodeId");
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ServiceId = parseServiceNodeId(nodeid_tree, tvb, pOffset);
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proto_item_set_end(ti_inner, tvb, *pOffset);
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dispatchService(encobj_tree, tvb, pOffset, ServiceId);
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proto_item_set_end(ti, tvb, *pOffset);
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return ServiceId;
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}
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int parseCloseSecureChannel(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
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{
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proto_item *ti;
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proto_item *ti_inner;
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proto_tree *encobj_tree;
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proto_tree *nodeid_tree;
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int ServiceId = 0;
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proto_tree_add_item(tree, hf_opcua_transport_type, tvb, *pOffset, 3, ENC_ASCII|ENC_NA); *pOffset+=3;
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proto_tree_add_item(tree, hf_opcua_transport_chunk, tvb, *pOffset, 1, ENC_ASCII|ENC_NA); *pOffset+=1;
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proto_tree_add_item(tree, hf_opcua_transport_size, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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proto_tree_add_item(tree, hf_opcua_transport_scid, tvb, *pOffset, 4, ENC_LITTLE_ENDIAN); *pOffset+=4;
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parseSecurityLayer(tree, tvb, pOffset);
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/* add encodeable object subtree */
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encobj_tree = proto_tree_add_subtree(tree, tvb, *pOffset, -1, ett_opcua_extensionobject, &ti, "Message : Encodeable Object");
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/* add nodeid subtree */
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nodeid_tree = proto_tree_add_subtree(encobj_tree, tvb, *pOffset, -1, ett_opcua_nodeid, &ti_inner, "TypeId : ExpandedNodeId");
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ServiceId = parseServiceNodeId(nodeid_tree, tvb, pOffset);
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proto_item_set_end(ti_inner, tvb, *pOffset);
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dispatchService(encobj_tree, tvb, pOffset, ServiceId);
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proto_item_set_end(ti, tvb, *pOffset);
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return ServiceId;
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}
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