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/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtDBus 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
******************************************************************************/
#include <string.h>
#ifndef QT_BOOTSTRAPPED
#include <QtCore/qcoreapplication.h>
#include <QtCore/qlist.h>
#include <QtCore/qmetaobject.h>
#include <QtCore/qvariant.h>
#include "qdbusutil_p.h"
#include "qdbusconnection_p.h"
#include "qdbusabstractadaptor_p.h" // for QCLASSINFO_DBUS_*
#endif
#include "qdbusmetatype_p.h"
#ifndef QT_NO_DBUS
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 != nullptr &&
(p == tag || *(p-1) == ' ') &&
(p[sizeof noReplyTag - 1] == '\0' || p[sizeof noReplyTag - 1] == ' '))
return true;
return false;
}
#ifndef QT_BOOTSTRAPPED
QString qDBusInterfaceFromMetaObject(const QMetaObject *mo)
{
QString interface;
int idx = mo->indexOfClassInfo(QCLASSINFO_DBUS_INTERFACE);
if (idx >= mo->classInfoOffset()) {
interface = QLatin1String(mo->classInfo(idx).value());
} else {
interface = QLatin1String(mo->className());
interface.replace(QLatin1String("::"), QLatin1String("."));
if (interface.startsWith(QLatin1String("QDBus"))) {
interface.prepend(QLatin1String("org.qtproject.QtDBus."));
} else if (interface.startsWith(QLatin1Char('Q')) &&
interface.length() >= 2 && interface.at(1).isUpper()) {
// assume it's Qt
interface.prepend(QLatin1String("org.qtproject.Qt."));
} else if (!QCoreApplication::instance()||
QCoreApplication::instance()->applicationName().isEmpty()) {
interface.prepend(QLatin1String("local."));
} else {
interface.prepend(QLatin1Char('.')).prepend(QCoreApplication::instance()->applicationName());
const QString organizationDomain = QCoreApplication::instance()->organizationDomain();
const auto domainName = QStringView{organizationDomain}.split(QLatin1Char('.'), Qt::SkipEmptyParts);
if (domainName.isEmpty()) {
interface.prepend(QLatin1String("local."));
} else {
QString composedDomain;
// + 1 for additional dot, e.g. organizationDomain equals "example.com",
// then composedDomain will be equal "com.example."
composedDomain.reserve(organizationDomain.size() + 1);
for (auto it = domainName.rbegin(), end = domainName.rend(); it != end; ++it)
composedDomain += *it + QLatin1Char('.');
interface.prepend(composedDomain);
}
}
}
return interface;
}
bool qDBusInterfaceInObject(QObject *obj, const QString &interface_name)
{
const QMetaObject *mo = obj->metaObject();
for ( ; mo != &QObject::staticMetaObject; mo = mo->superClass())
if (interface_name == qDBusInterfaceFromMetaObject(mo))
return true;
return false;
}
// 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<QMetaType> &metaTypes, QString &errorMsg)
{
return qDBusParametersForMethod(mm.parameterTypes(), metaTypes, errorMsg);
}
#endif // QT_BOOTSTRAPPED
int qDBusParametersForMethod(const QList<QByteArray> ¶meterTypes, QList<QMetaType> &metaTypes,
QString &errorMsg)
{
QDBusMetaTypeId::init();
metaTypes.clear();
metaTypes.append(QMetaType()); // return type
int inputCount = 0;
bool seenMessage = false;
QList<QByteArray>::ConstIterator it = parameterTypes.constBegin();
QList<QByteArray>::ConstIterator end = parameterTypes.constEnd();
for ( ; it != end; ++it) {
QByteArray type = *it;
if (type.endsWith('*')) {
errorMsg = QLatin1String("Pointers are not supported: ") + QLatin1String(type);
return -1;
}
if (type.endsWith('&')) {
QByteArray basictype = type;
basictype.truncate(type.length() - 1);
QMetaType id = QMetaType::fromName(basictype);
if (!id.isValid()) {
errorMsg = QLatin1String("Unregistered output type in parameter list: ") + QLatin1String(type);
return -1;
} else if (QDBusMetaType::typeToSignature(id) == nullptr)
return -1;
metaTypes.append(id);
seenMessage = true; // it cannot appear anymore anyways
continue;
}
if (seenMessage) { // && !type.endsWith('&')
errorMsg = QLatin1String("Invalid method, non-output parameters after message or after output parameters: ") + QLatin1String(type);
return -1; // not allowed
}
if (type.startsWith("QVector<"))
type = "QList<" + type.mid(sizeof("QVector<") - 1);
QMetaType id = QMetaType::fromName(type);
#ifdef QT_BOOTSTRAPPED
// in bootstrap mode QDBusMessage isn't included, thus we need to resolve it manually here
if (type == "QDBusMessage") {
id = QDBusMetaTypeId::message();
}
#endif
if (!id.isValid()) {
errorMsg = QLatin1String("Unregistered input type in parameter list: ") + QLatin1String(type);
return -1;
}
if (id == QDBusMetaTypeId::message())
seenMessage = true;
else if (QDBusMetaType::typeToSignature(id) == nullptr) {
errorMsg = QLatin1String("Type not registered with QtDBus in parameter list: ") + QLatin1String(type);
return -1;
}
metaTypes.append(id);
++inputCount;
}
return inputCount;
}
QT_END_NAMESPACE
#endif // QT_NO_DBUS
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