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/******************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtOpcUa module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
******************************************************************************/
#include "quacpputils.h"
#include <QtCore/QLoggingCategory>
#include <QtCore/QString>
#include <QtCore/QUuid>
#include <uaguid.h>
#include <cstring>
QT_BEGIN_NAMESPACE
Q_DECLARE_LOGGING_CATEGORY(QT_OPCUA_PLUGINS_UACPP)
namespace UACppUtils {
UaNodeId nodeIdFromQString(const QString &name)
{
const int semicolonIndex = name.indexOf(';');
if (semicolonIndex <= 0) {
qCWarning(QT_OPCUA_PLUGINS_UACPP, "Unable to split node id string: %s", qUtf8Printable(name));
return UaNodeId();
}
QStringRef namespaceString = name.leftRef(semicolonIndex);
if (namespaceString.length() <= 3 || !namespaceString.startsWith(QLatin1String("ns="))) {
qCWarning(QT_OPCUA_PLUGINS_UACPP, "Not a valid index string in node id string: %s", qUtf8Printable(name));
return UaNodeId();
}
namespaceString = namespaceString.mid(3); // Remove "ns="
QStringRef identifierString = name.midRef(semicolonIndex + 1);
if (identifierString.length() <= 2) {
qCWarning(QT_OPCUA_PLUGINS_UACPP, "There is no identifier in node id string: %s", qUtf8Printable(name));
return UaNodeId();
}
char identifierType;
if (identifierString.startsWith(QLatin1String("s=")))
identifierType = 's';
else if (identifierString.startsWith(QLatin1String("i=")))
identifierType = 'i';
else if (identifierString.startsWith(QLatin1String("g=")))
identifierType = 'g';
else if (identifierString.startsWith(QLatin1String("b=")))
identifierType = 'b';
else {
qCWarning(QT_OPCUA_PLUGINS_UACPP, "There is no valid identifier type in node id string: %s", qUtf8Printable(name));
return UaNodeId();
}
identifierString = identifierString.mid(2); // Remove identifier type
bool ok = false;
OpcUa_UInt16 index = static_cast<OpcUa_UInt16>(namespaceString.toUInt(&ok));
if (!ok) {
qCWarning(QT_OPCUA_PLUGINS_UACPP, "Not a valid namespace index in node id string: %s", qUtf8Printable(name));
return UaNodeId();
}
switch (identifierType) {
case 'i': {
bool isNumber;
OpcUa_UInt32 identifier = static_cast<OpcUa_UInt32>(identifierString.toUInt(&isNumber));
if (isNumber)
return UaNodeId(identifier, index);
else
qCWarning(QT_OPCUA_PLUGINS_UACPP, "%s does not contain a valid numeric identifier", qUtf8Printable(name));
break;
}
case 's': {
if (identifierString.length() > 0)
return UaNodeId(UaString(identifierString.toUtf8().constData()), index);
else
qCWarning(QT_OPCUA_PLUGINS_UACPP, "%s does not contain a valid string identifier", qUtf8Printable(name));
break;
}
case 'g': {
QUuid uuid(identifierString.toString());
if (uuid.isNull()) {
qCWarning(QT_OPCUA_PLUGINS_UACPP, "%s does not contain a valid guid identifier", qUtf8Printable(name));
}
OpcUa_Guid guid;
guid.Data1 = uuid.data1;
guid.Data2 = uuid.data2;
guid.Data3 = uuid.data3;
std::memcpy(guid.Data4, uuid.data4, sizeof(uuid.data4));
return UaNodeId(guid, index);
}
case 'b': {
QByteArray temp = QByteArray::fromBase64(identifierString.toLocal8Bit());
UaByteString bstr((OpcUa_Int32)temp.size(), reinterpret_cast<OpcUa_Byte *>(temp.data()));
if (temp.size() > 0) {
return UaNodeId(bstr, index);
}
else
qCWarning(QT_OPCUA_PLUGINS_UACPP, "%s does not contain a valid byte string identifier", qUtf8Printable(name));
break;
}
default:
qCWarning(QT_OPCUA_PLUGINS_UACPP, "Could not parse node id: %s", qUtf8Printable(name));
}
return UaNodeId();
}
// We only need this for template<> QVariant scalarToQVariant<QString, OpcUa_NodeId>(OpcUa_NodeId *data, QMetaType::Type type)
// And also only because our unit tests assume that ns=0 has to be included in the string. Even though ns=0
// can be assumed implicity
QString nodeIdToQString(const UaNodeId &id)
{
QString result = QString::fromLatin1("ns=%1;").arg(id.namespaceIndex());
switch (id.identifierType()) {
case OpcUa_IdentifierType_Numeric:
result.append(QString::fromLatin1("i=%1").arg(id.identifierNumeric()));
break;
case OpcUa_IdentifierType_String: {
result.append(QLatin1String("s="));
const UaString identifier(id.identifierString());
result.append(QString::fromUtf8(identifier.toUtf8(), identifier.size()));
break;
}
case OpcUa_IdentifierType_Guid: {
OpcUa_Guid *uaguid = (*id).Identifier.Guid;
const QUuid uuid(uaguid->Data1, uaguid->Data2, uaguid->Data3,
uaguid->Data4[0], uaguid->Data4[1], uaguid->Data4[2], uaguid->Data4[3],
uaguid->Data4[4], uaguid->Data4[5], uaguid->Data4[6], uaguid->Data4[7]);
result.append(QStringLiteral("g=")).append(uuid.toString().midRef(1, 36));
break;
}
case OpcUa_IdentifierType_Opaque: {
const OpcUa_ByteString &uabs = (*id).Identifier.ByteString;
const QByteArray temp(reinterpret_cast<char *>(uabs.Data), uabs.Length);
result.append(QStringLiteral("b=")).append(temp.toBase64());
break;
}
default:
qCWarning(QT_OPCUA_PLUGINS_UACPP, "UACpp Utils: Could not convert UA_NodeId to QString");
result.clear();
}
return result;
}
} // namespace UaCppUtils
QT_END_NAMESPACE
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