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Diffstat (limited to 'src/dbus/qdbusmisc.cpp')
| -rw-r--r-- | src/dbus/qdbusmisc.cpp | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/src/dbus/qdbusmisc.cpp b/src/dbus/qdbusmisc.cpp new file mode 100644 index 0000000..6f89238 --- /dev/null +++ b/src/dbus/qdbusmisc.cpp @@ -0,0 +1,150 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtDBus module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <string.h> + +#include <QtCore/qvariant.h> +#include <QtCore/qmetaobject.h> + +#include "qdbusutil_p.h" +#include "qdbusconnection_p.h" +#include "qdbusmetatype_p.h" + +QT_BEGIN_NAMESPACE + +bool qDBusCheckAsyncTag(const char *tag) +{ + static const char noReplyTag[] = "Q_NOREPLY"; + if (!tag || !*tag) + return false; + + const char *p = strstr(tag, noReplyTag); + if (p != NULL && + (p == tag || *(p-1) == ' ') && + (p[sizeof noReplyTag - 1] == '\0' || p[sizeof noReplyTag - 1] == ' ')) + return true; + + return false; +} + +int qDBusNameToTypeId(const char *name) +{ + int id = static_cast<int>( QVariant::nameToType(name) ); + if (id == QVariant::UserType) + id = QMetaType::type(name); + return id; +} + +// calculates the metatypes for the method +// the slot must have the parameters in the following form: +// - zero or more value or const-ref parameters of any kind +// - zero or one const ref of QDBusMessage +// - zero or more non-const ref parameters +// No parameter may be a template. +// this function returns -1 if the parameters don't match the above form +// this function returns the number of *input* parameters, including the QDBusMessage one if any +// this function does not check the return type, so metaTypes[0] is always 0 and always present +// metaTypes.count() >= retval + 1 in all cases +// +// sig must be the normalised signature for the method +int qDBusParametersForMethod(const QMetaMethod &mm, QList<int>& metaTypes) +{ + QDBusMetaTypeId::init(); + + QList<QByteArray> parameterTypes = mm.parameterTypes(); + metaTypes.clear(); + + metaTypes.append(0); // return type + int inputCount = 0; + bool seenMessage = false; + QList<QByteArray>::ConstIterator it = parameterTypes.constBegin(); + QList<QByteArray>::ConstIterator end = parameterTypes.constEnd(); + for ( ; it != end; ++it) { + const QByteArray &type = *it; + if (type.endsWith('*')) { + //qWarning("Could not parse the method '%s'", mm.signature()); + // pointer? + return -1; + } + + if (type.endsWith('&')) { + QByteArray basictype = type; + basictype.truncate(type.length() - 1); + + int id = qDBusNameToTypeId(basictype); + if (id == 0) { + //qWarning("Could not parse the method '%s'", mm.signature()); + // invalid type in method parameter list + return -1; + } else if (QDBusMetaType::typeToSignature(id) == 0) + return -1; + + metaTypes.append( id ); + seenMessage = true; // it cannot appear anymore anyways + continue; + } + + if (seenMessage) { // && !type.endsWith('&') + //qWarning("Could not parse the method '%s'", mm.signature()); + // non-output parameters after message or after output params + return -1; // not allowed + } + + int id = qDBusNameToTypeId(type); + if (id == 0) { + //qWarning("Could not parse the method '%s'", mm.signature()); + // invalid type in method parameter list + return -1; + } + + if (id == QDBusMetaTypeId::message) + seenMessage = true; + else if (QDBusMetaType::typeToSignature(id) == 0) + return -1; + + metaTypes.append(id); + ++inputCount; + } + + return inputCount; +} + +QT_END_NAMESPACE |