--- /dev/null
+/******************************************************************************
+** $Id$
+**
+** Copyright (C) 2006-2007 ascolab GmbH. All Rights Reserved.
+** Web: http://www.ascolab.com
+**
+** 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 file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** Project: OpcUa Wireshark Plugin
+**
+** Description: OpcUa Transport Layer Decoder.
+**
+** Author: Gerhard Gappmeier <gerhard.gappmeier@ascolab.com>
+** Last change by: $Author: gergap $
+**
+******************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <gmodule.h>
+#include <epan/packet.h>
+#include "opcua_security_layer.h"
+#include "opcua_application_layer.h"
+#include "opcua_simpletypes.h"
+#include <string.h>
+#include <epan/emem.h>
+
+void dispatchService(proto_tree *tree, tvbuff_t *tvb, gint *pOffset, int ServiceId);
+
+static int hf_opcua_transport_sig = -1;
+static int hf_opcua_transport_len = -1;
+static int hf_opcua_transport_ver = -1;
+static int hf_opcua_transport_cid = -1;
+static int hf_opcua_transport_lifetime = -1;
+static int hf_opcua_transport_sbl = -1;
+static int hf_opcua_transport_rbl = -1;
+static int hf_opcua_transport_endpoint = -1;
+static int hf_opcua_transport_rlifetime = -1;
+static int hf_opcua_transport_rsbl = -1;
+static int hf_opcua_transport_rrbl = -1;
+static int hf_opcua_transport_altendpoint = -1;
+static int hf_opcua_transport_rqid = -1;
+static int hf_opcua_transport_status = -1;
+extern gint ett_opcua_nodeid;
+
+static hf_register_info hf[] =
+{
+ { &hf_opcua_transport_sig,
+ /* full name , abbreviation , type , display , strings, bitmask, blurb, id, parent, ref_count, bitshift */
+ { "Signature", "transport.sig", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_len,
+ { "Message Length", "transport.len", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_ver,
+ { "Version", "transport.ver", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_cid,
+ { "ConnectionId", "transport.cid", FT_GUID, BASE_NONE, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_lifetime,
+ { "Lifetime", "transport.lifetime", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_sbl,
+ { "SendBufferLength", "transport.sbl", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_rbl,
+ { "ReceiveBufferLength", "transport.rbl", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_endpoint,
+ { "EndPoint", "transport.endpoint", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_rlifetime,
+ { "Revised Lifetime", "transport.rlifetime", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_rsbl,
+ { "Revised SendBufferLength", "transport.rsbl", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_rrbl,
+ { "Revised ReceiveBufferLength", "transport.rrbl", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_altendpoint,
+ { "Alternate EndPoint", "transport.altendpoint", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_rqid,
+ { "RequestId", "transport.rqid", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }
+ },
+ { &hf_opcua_transport_status,
+ { "StatusCode", "transport.status", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }
+ }
+};
+
+/** subtree types */
+extern gint ett_opcua_extensionobject;
+
+/** Register transport layer types. */
+void registerTransportLayerTypes(int proto)
+{
+ proto_register_field_array(proto, hf, array_length(hf));
+}
+
+/** helper functions for adding strings,
+ * that are not zero terminated.
+ */
+void addString(proto_tree *tree,
+ int hfindex,
+ tvbuff_t *tvb,
+ gint start,
+ gint length,
+ const char *value)
+{
+ char *szValue = ep_alloc(256);
+
+ if (szValue)
+ {
+ if (length > 255) length = 255;
+ /* copy non null terminated string data */
+ strncpy(szValue, value, length);
+ /* set null terminator */
+ szValue[length] = 0;
+
+ proto_tree_add_string(tree, hfindex, tvb, start, length, szValue);
+ }
+}
+
+/* Transport Layer: message parsers */
+void parseHello(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
+{
+ addString(tree, hf_opcua_transport_sig, tvb, *pOffset, 4, tvb->real_data); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_len, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_ver, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_cid, tvb, *pOffset, 16, TRUE); *pOffset+=16;
+ proto_tree_add_item(tree, hf_opcua_transport_lifetime, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_sbl, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_rbl, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ parseString(tree, tvb, pOffset, hf_opcua_transport_endpoint);
+}
+
+void parseAcknowledge(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
+{
+ addString(tree, hf_opcua_transport_sig, tvb, *pOffset, 4, tvb->real_data); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_len, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_cid, tvb, *pOffset, 16, TRUE); *pOffset+=16;
+ proto_tree_add_item(tree, hf_opcua_transport_rlifetime, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_rsbl, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_rrbl, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ parseString(tree, tvb, pOffset, hf_opcua_transport_altendpoint);
+}
+
+void parseDisconnect(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
+{
+ addString(tree, hf_opcua_transport_sig, tvb, *pOffset, 4, tvb->real_data); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_len, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_cid, tvb, *pOffset, 16, TRUE); *pOffset+=16;
+}
+
+void parseData(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
+{
+ proto_item *ti;
+ proto_tree *encobj_tree;
+ proto_tree *nodeid_tree;
+ int ServiceId = 0;
+
+ addString(tree, hf_opcua_transport_sig, tvb, *pOffset, 4, tvb->real_data); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_len, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_cid, tvb, *pOffset, 16, TRUE); *pOffset+=16;
+ proto_tree_add_item(tree, hf_opcua_transport_rqid, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+
+ /* message data contains the security layer */
+ parseSecurityLayer(tree, tvb, pOffset);
+
+ /* AT THE MOMENT NO SECURITY IS IMPLEMENTED IN UA.
+ * WE CAN JUST JUMP INTO THE APPLICATION LAYER DATA.
+ * THIS WILL CHAHNGE IN THE FUTURE. */
+
+ /* add encodeable object subtree */
+ ti = proto_tree_add_text(tree, tvb, 0, -1, "Message : Encodeable Object");
+ encobj_tree = proto_item_add_subtree(ti, ett_opcua_extensionobject);
+
+ /* add nodeid subtree */
+ ti = proto_tree_add_text(encobj_tree, tvb, 0, -1, "TypeId : ExpandedNodeId");
+ nodeid_tree = proto_item_add_subtree(ti, ett_opcua_nodeid);
+ ServiceId = parseServiceNodeId(nodeid_tree, tvb, pOffset, "NodeId") - 1;
+
+ dispatchService(encobj_tree, tvb, pOffset, ServiceId);
+}
+
+void parseAbort(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
+{
+ addString(tree, hf_opcua_transport_sig, tvb, *pOffset, 4, tvb->real_data); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_len, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_cid, tvb, *pOffset, 16, TRUE); *pOffset+=16;
+ proto_tree_add_item(tree, hf_opcua_transport_rqid, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+}
+
+void parseError(proto_tree *tree, tvbuff_t *tvb, gint *pOffset)
+{
+ addString(tree, hf_opcua_transport_sig, tvb, *pOffset, 4, tvb->real_data); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_len, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_cid, tvb, *pOffset, 16, TRUE); *pOffset+=16;
+ proto_tree_add_item(tree, hf_opcua_transport_rqid, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+ proto_tree_add_item(tree, hf_opcua_transport_status, tvb, *pOffset, 4, TRUE); *pOffset+=4;
+}
git.samba.org / obnox / wireshark / wip.git / blobdiff