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SingleApplication: Use geteuid / getpwuid to get username and reformat

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This commit is contained in:
Jonas Kvinge
2019-08-26 02:00:47 +02:00
parent 7fe1f4de93
commit b2160255d3
10 changed files with 1127 additions and 1034 deletions
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220
3rdparty/singleapplication/singlecoreapplication.cpp vendored
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@@ -20,12 +20,24 @@
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// W A R N I N G !!!
// -----------------
//
// This is a modified version of SingleApplication,
// The original version is at:
//
// https://github.com/itay-grudev/SingleApplication
//
//
#include <QtGlobal>
#include <QCoreApplication>
#include <QtCore/QTime>
#include <QtCore/QThread>
#include <QtCore/QDateTime>
#include <QtCore/QByteArray>
#include <QtCore/QSharedMemory>
#include <QThread>
#include <QSharedMemory>
#include <QByteArray>
#include <QDateTime>
#include <QTime>
#include "singlecoreapplication.h"
#include "singlecoreapplication_p.h"
@@ -37,139 +49,137 @@
* @param argv
* @param {bool} allowSecondaryInstances
*/
SingleCoreApplication::SingleCoreApplication( int &argc, char *argv[], bool allowSecondary, Options options, int timeout )
: app_t( argc, argv ), d_ptr( new SingleCoreApplicationPrivate( this ) )
{
Q_D(SingleCoreApplication);
SingleCoreApplication::SingleCoreApplication(int &argc, char *argv[], bool allowSecondary, Options options, int timeout)
: app_t(argc, argv), d_ptr(new SingleCoreApplicationPrivate(this)) {
// Store the current mode of the program
d->options = options;
Q_D(SingleCoreApplication);
// Generating an application ID used for identifying the shared memory
// block and QLocalServer
d->genBlockServerName();
// Store the current mode of the program
d->options = options;
// Generating an application ID used for identifying the shared memory
// block and QLocalServer
d->genBlockServerName();
#ifdef Q_OS_UNIX
// By explicitly attaching it and then deleting it we make sure that the
// memory is deleted even after the process has crashed on Unix.
d->memory = new QSharedMemory( d->blockServerName );
d->memory->attach();
delete d->memory;
// By explicitly attaching it and then deleting it we make sure that the
// memory is deleted even after the process has crashed on Unix.
d->memory = new QSharedMemory(d->blockServerName);
d->memory->attach();
delete d->memory;
#endif
// Guarantee thread safe behaviour with a shared memory block.
d->memory = new QSharedMemory( d->blockServerName );
// Guarantee thread safe behaviour with a shared memory block.
d->memory = new QSharedMemory(d->blockServerName);
// Create a shared memory block
if( d->memory->create( sizeof( InstancesInfo ) ) ) {
// Initialize the shared memory block
d->memory->lock();
d->initializeMemoryBlock();
d->memory->unlock();
} else {
// Attempt to attach to the memory segment
if( ! d->memory->attach() ) {
qCritical() << "SingleCoreApplication: Unable to attach to shared memory block.";
qCritical() << d->memory->errorString();
delete d;
::exit( EXIT_FAILURE );
}
// Create a shared memory block
if (d->memory->create(sizeof(InstancesInfo))) {
// Initialize the shared memory block
d->memory->lock();
d->initializeMemoryBlock();
d->memory->unlock();
}
else {
// Attempt to attach to the memory segment
if (!d->memory->attach()) {
qCritical() << "SingleCoreApplication: Unable to attach to shared memory block.";
qCritical() << d->memory->errorString();
delete d;
::exit(EXIT_FAILURE);
}
}
InstancesInfo* inst = static_cast<InstancesInfo*>( d->memory->data() );
QTime time;
time.start();
InstancesInfo* inst = static_cast<InstancesInfo*>(d->memory->data());
QTime time;
time.start();
// Make sure the shared memory block is initialised and in consistent state
while( true ) {
d->memory->lock();
// Make sure the shared memory block is initialised and in consistent state
while (true) {
d->memory->lock();
if( d->blockChecksum() == inst->checksum ) break;
if(d->blockChecksum() == inst->checksum) break;
if( time.elapsed() > 5000 ) {
qWarning() << "SingleCoreApplication: Shared memory block has been in an inconsistent state from more than 5s. Assuming primary instance failure.";
d->initializeMemoryBlock();
}
d->memory->unlock();
// Random sleep here limits the probability of a collision between two racing apps
qsrand( QDateTime::currentMSecsSinceEpoch() % std::numeric_limits<uint>::max() );
QThread::sleep( 8 + static_cast <unsigned long>( static_cast <float>( qrand() ) / RAND_MAX * 10 ) );
}
if( inst->primary == false) {
d->startPrimary();
d->memory->unlock();
return;
}
// Check if another instance can be started
if( allowSecondary ) {
inst->secondary += 1;
inst->checksum = d->blockChecksum();
d->instanceNumber = inst->secondary;
d->startSecondary();
if( d->options & Mode::SecondaryNotification ) {
d->connectToPrimary( timeout, SingleCoreApplicationPrivate::SecondaryInstance );
}
d->memory->unlock();
return;
if (time.elapsed() > 5000) {
qWarning() << "SingleCoreApplication: Shared memory block has been in an inconsistent state from more than 5s. Assuming primary instance failure.";
d->initializeMemoryBlock();
}
d->memory->unlock();
d->connectToPrimary( timeout, SingleCoreApplicationPrivate::NewInstance );
// Random sleep here limits the probability of a collision between two racing apps
qsrand(QDateTime::currentMSecsSinceEpoch() % std::numeric_limits<uint>::max());
QThread::sleep(8 + static_cast <unsigned long>(static_cast <float>(qrand()) / RAND_MAX * 10));
}
delete d;
if (inst->primary == false) {
d->startPrimary();
d->memory->unlock();
return;
}
// Check if another instance can be started
if (allowSecondary) {
inst->secondary += 1;
inst->checksum = d->blockChecksum();
d->instanceNumber = inst->secondary;
d->startSecondary();
if(d->options & Mode::SecondaryNotification) {
d->connectToPrimary(timeout, SingleCoreApplicationPrivate::SecondaryInstance);
}
d->memory->unlock();
return;
}
d->memory->unlock();
d->connectToPrimary(timeout, SingleCoreApplicationPrivate::NewInstance);
delete d;
::exit(EXIT_SUCCESS);
::exit( EXIT_SUCCESS );
}
/**
* @brief Destructor
*/
SingleCoreApplication::~SingleCoreApplication()
{
Q_D(SingleCoreApplication);
delete d;
SingleCoreApplication::~SingleCoreApplication() {
Q_D(SingleCoreApplication);
delete d;
}
bool SingleCoreApplication::isPrimary()
{
Q_D(SingleCoreApplication);
return d->server != nullptr;
bool SingleCoreApplication::isPrimary() {
Q_D(SingleCoreApplication);
return d->server != nullptr;
}
bool SingleCoreApplication::isSecondary()
{
Q_D(SingleCoreApplication);
return d->server == nullptr;
bool SingleCoreApplication::isSecondary() {
Q_D(SingleCoreApplication);
return d->server == nullptr;
}
quint32 SingleCoreApplication::instanceId()
{
Q_D(SingleCoreApplication);
return d->instanceNumber;
quint32 SingleCoreApplication::instanceId() {
Q_D(SingleCoreApplication);
return d->instanceNumber;
}
qint64 SingleCoreApplication::primaryPid()
{
Q_D(SingleCoreApplication);
return d->primaryPid();
qint64 SingleCoreApplication::primaryPid() {
Q_D(SingleCoreApplication);
return d->primaryPid();
}
bool SingleCoreApplication::sendMessage( QByteArray message, int timeout )
{
Q_D(SingleCoreApplication);
bool SingleCoreApplication::sendMessage(QByteArray message, int timeout) {
// Nobody to connect to
if( isPrimary() ) return false;
Q_D(SingleCoreApplication);
// Make sure the socket is connected
d->connectToPrimary( timeout, SingleCoreApplicationPrivate::Reconnect );
// Nobody to connect to
if(isPrimary()) return false;
// Make sure the socket is connected
d->connectToPrimary(timeout, SingleCoreApplicationPrivate::Reconnect);
d->socket->write(message);
bool dataWritten = d->socket->waitForBytesWritten(timeout);
d->socket->flush();
return dataWritten;
d->socket->write( message );
bool dataWritten = d->socket->waitForBytesWritten( timeout );
d->socket->flush();
return dataWritten;
}