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/*
This file is part of the KDE libraries
SPDX-FileCopyrightText: 1999 Preston Brown <pbrown@kde.org>
SPDX-FileCopyrightText: 1997-1999 Matthias Kalle Dalheimer <kalle@kde.org>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "ksharedconfig.h"
#include "kconfig_p.h"
#include "kconfigbackend_p.h"
#include "kconfiggroup.h"
#include <QCoreApplication>
#include <QThread>
#include <QThreadStorage>
void _k_globalMainConfigSync();
class GlobalSharedConfigList : public QList<KSharedConfig *>
{
public:
GlobalSharedConfigList()
: wasTestModeEnabled(false)
{
if (!qApp || QThread::currentThread() == qApp->thread()) {
// We want to force the sync() before the QCoreApplication
// instance is gone. Otherwise we trigger a QLockFile::lock()
// after QCoreApplication is gone, calling qAppName() for a non
// existent app...
qAddPostRoutine(&_k_globalMainConfigSync);
}
// In other threads, QThreadStorage takes care of deleting the GlobalSharedConfigList when
// the thread exits.
}
// in addition to the list, we need to hold the main config,
// so that it's not created and destroyed all the time.
KSharedConfigPtr mainConfig;
bool wasTestModeEnabled;
};
static QThreadStorage<GlobalSharedConfigList *> s_storage;
template<typename T>
T *perThreadGlobalStatic()
{
if (!s_storage.hasLocalData()) {
s_storage.setLocalData(new T);
}
return s_storage.localData();
}
// Q_GLOBAL_STATIC(GlobalSharedConfigList, globalSharedConfigList), but per thread:
static GlobalSharedConfigList *globalSharedConfigList()
{
return perThreadGlobalStatic<GlobalSharedConfigList>();
}
void _k_globalMainConfigSync()
{
KSharedConfigPtr mainConfig = globalSharedConfigList()->mainConfig;
if (mainConfig) {
mainConfig->sync();
}
}
KSharedConfigPtr KSharedConfig::openConfig(const QString &_fileName, OpenFlags flags, QStandardPaths::StandardLocation resType)
{
QString fileName(_fileName);
GlobalSharedConfigList *list = globalSharedConfigList();
if (fileName.isEmpty() && !flags.testFlag(KConfig::SimpleConfig)) {
// Determine the config file name that KConfig will make up (see KConfigPrivate::changeFileName)
fileName = KConfig::mainConfigName();
}
if (!list->wasTestModeEnabled && QStandardPaths::isTestModeEnabled()) {
list->wasTestModeEnabled = true;
list->clear();
list->mainConfig = nullptr;
}
for (auto *cfg : std::as_const(*list)) {
if (cfg->name() == fileName && cfg->d_ptr->openFlags == flags && cfg->locationType() == resType
// cfg->backend()->type() == backend
) {
return KSharedConfigPtr(cfg);
}
}
KSharedConfigPtr ptr(new KSharedConfig(fileName, flags, resType));
if (_fileName.isEmpty() && flags == FullConfig && resType == QStandardPaths::GenericConfigLocation) {
list->mainConfig = ptr;
const bool isMainThread = !qApp || QThread::currentThread() == qApp->thread();
static bool userWarned = false;
if (isMainThread && !userWarned) {
userWarned = true;
const bool isReadOnly = qEnvironmentVariableIsEmpty("KDE_HOME_READONLY");
if (isReadOnly && QCoreApplication::applicationName() != QLatin1String("kdialog")) {
if (ptr->group("General").readEntry(QStringLiteral("warn_unwritable_config"), true)) {
ptr->isConfigWritable(true);
}
}
}
}
return ptr;
}
KSharedConfig::Ptr KSharedConfig::openStateConfig(const QString &_fileName)
{
// KF6 TODO: port this to XDG_STATE_HOME (default ~/.local/state)
// See https://gitlab.freedesktop.org/xdg/xdg-specs/-/blob/master/basedir/basedir-spec.xml
QString fileName(_fileName);
if (fileName.isEmpty()) {
fileName = QCoreApplication::applicationName() + QLatin1String("staterc");
}
return openConfig(fileName, SimpleConfig, QStandardPaths::AppDataLocation);
}
KSharedConfig::KSharedConfig(const QString &fileName, OpenFlags flags, QStandardPaths::StandardLocation resType)
: KConfig(fileName, flags, resType)
{
globalSharedConfigList()->append(this);
}
KSharedConfig::~KSharedConfig()
{
if (s_storage.hasLocalData()) {
globalSharedConfigList()->removeAll(this);
}
}
KConfigGroup KSharedConfig::groupImpl(const QByteArray &groupName)
{
KSharedConfigPtr ptr(this);
return KConfigGroup(ptr, groupName.constData());
}
const KConfigGroup KSharedConfig::groupImpl(const QByteArray &groupName) const
{
const KSharedConfigPtr ptr(const_cast<KSharedConfig *>(this));
return KConfigGroup(ptr, groupName.constData());
}
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