100 lines
3.1 KiB
C
100 lines
3.1 KiB
C
/******************************************************************************
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** $Id$
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**
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** Copyright (C) 2006-2007 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 Security 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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <gmodule.h>
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#include <epan/packet.h>
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#include "ua_application_layer.h"
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#include "opcua_simpletypes.h"
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/** NodeClass enum table */
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static const value_string g_SecSigTable[] = {
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{ 0, "GetSecurityPolcies" },
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{ 1, "OpenSecureChannel" },
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{ 2, "CloseSecureChannel" },
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{ 3, "Message" },
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{ 0, NULL }
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};
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static int hf_opcua_SecuritySigEnum = -1;
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static int hf_opcua_security_sig = -1;
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static int hf_opcua_security_policy = -1;
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static int hf_opcua_security_channel = -1;
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static int hf_opcua_security_token = -1;
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static hf_register_info hf[] =
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{
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{ &hf_opcua_security_sig,
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{ "Security Signature", "security.sig", FT_UINT16, BASE_HEX, VALS(g_SecSigTable), 0x0, "", HFILL }
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},
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{ &hf_opcua_security_policy,
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{ "Security Policy", "security.policy", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }
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},
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{ &hf_opcua_security_channel,
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{ "Secure Channel Id", "security.channel", FT_GUID, BASE_NONE, NULL, 0x0, "", HFILL }
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},
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{ &hf_opcua_security_token,
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{ "Security Token Id", "security.token", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }
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}
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};
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/** Register security layer types. */
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void registerSecurityLayerTypes(int proto)
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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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/* Security Layer: message parsers
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* Only works for Security Policy "NoSecurity" at the moment.
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*/
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void parseSecurityLayer(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
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{
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guint16 Sig;
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Sig = tvb_get_letohs(tvb, pOffset[0]);
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proto_tree_add_item(tree, hf_opcua_security_sig, tvb, *pOffset, 2, TRUE); *pOffset+=2;
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switch (Sig)
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{
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case 0: /* GetSecurityPolicies */
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break;
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case 1: /* OpenSecureChannel */
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parseGuid(tree, tvb, pOffset, hf_opcua_security_channel);
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parseString(tree, tvb, pOffset, hf_opcua_security_policy);
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break;
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case 2: /* CloseSecureChannel */
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parseGuid(tree, tvb, pOffset, hf_opcua_security_channel);
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parseString(tree, tvb, pOffset, hf_opcua_security_token);
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break;
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case 3: /* Other Services Messages */
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parseGuid(tree, tvb, pOffset, hf_opcua_security_channel);
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parseString(tree, tvb, pOffset, hf_opcua_security_token);
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break;
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}
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}
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