int Downloader::download(bool wait)
{
if (!isStarted)
{
isStarted = true;
downloadError = 0;
if (!dlFile->open(QIODevice::WriteOnly))
{
errorStr += "can not open file " + dest + "\n";
return 1;
}
if (reply == NULL)
reply = network->get(request);
QObject::connect(reply, SIGNAL(readyRead()), this, SLOT(downloadedFileWrite()));
QObject::connect(reply, SIGNAL(finished ()), this, SLOT(handleDownload()));
QObject::connect(reply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(slotError(QNetworkReply::NetworkError)));
//QObject::connect(reply, SIGNAL(sslErrors(QList<QSslError>)), this, SLOT(slotSslErrors(QList<QSslError>)));
if (wait)
{
QEventLoop loop;
QObject::connect(this, SIGNAL(finished(int)), &loop, SLOT(quit()));
loop.exec();
}
return downloadError;
}
UpdateDialog::UpdateDialog(QWidget *parent, const QString& releaseNotes, const QString& latestVersion, const QUrl& downloadURL) :
QDialog(parent),
_latestVersion(latestVersion),
_downloadUrl(downloadURL)
{
Ui::Dialog dialogUI;
dialogUI.setupUi(this);
QString updateRequired = QString("You are currently running build %1, the latest build released is %2."
"\n\nPlease download and install the most recent release to access the latest features and bug fixes.")
.arg(Application::getInstance()->applicationVersion(), latestVersion);
setAttribute(Qt::WA_DeleteOnClose);
QPushButton* downloadButton = findChild<QPushButton*>("downloadButton");
QPushButton* skipButton = findChild<QPushButton*>("skipButton");
QPushButton* closeButton = findChild<QPushButton*>("closeButton");
QLabel* updateContent = findChild<QLabel*>("updateContent");
updateContent->setText(updateRequired);
connect(downloadButton, SIGNAL(released()), this, SLOT(handleDownload()));
connect(skipButton, SIGNAL(released()), this, SLOT(handleSkip()));
connect(closeButton, SIGNAL(released()), this, SLOT(close()));
QMetaObject::invokeMethod(this, "show", Qt::QueuedConnection);
}
/*
* main(): This function is the entry point for the server program of Share Your Playlist application.
* This function creates the upload and download sockets and waits for client connections.
* We have implemented all the 3 methods used in concurrency in servers namely:
* 1. Multi-process approach using fork() for handling upload and download functionalities
* 2. Non-blocking I/O using select() for monitoring two ports on server
* 3. Multi-threaded approach for data redundancy between servers
*/
int main(int argc, char **argv) {
struct sockaddr_in sockserv;
unsigned int alen;
int upload_sock, download_sock, i, slave_sock, fds[2], *fd = NULL;
struct sockaddr *addr;
socklen_t *addrlen;
//binds sockets for upload and download functionality
upload_sock = passiveTCP(UPLOAD_PORT);
download_sock = passiveTCP(DOWNLOAD_PORT);
printf("Upload sock : %d\n", upload_sock);
printf("Download sock : %d\n", download_sock);
fds[0] = upload_sock;
fds[1] = download_sock;
while (1) {
//calls function to identify which port client connected to
slave_sock = network_accept_any(fds, 2, &fd);
//Initializing thread attributes for prstats thread
(void) pthread_attr_init(&ta);
(void) pthread_attr_setdetachstate(&ta, PTHREAD_CREATE_DETACHED);
(void) pthread_mutex_init(&stats.st_mutex, 0);
/*if(pthread_create(&th, &ta, (void * (*)(void *))prstats, 0) < 0)
fatal("prstats thread failed");*/
//Based on socket that obtained the connection, we use multi-process approach using fork() to provide concurrency
//Based on upload/download, the respective functions are called in the child processes.
if (*fd == upload_sock) {
switch (fork()) {
case 0:
close(*fd);
exit(handleUpload(slave_sock));
default:
close(slave_sock);
break;
}
}
if (*fd == download_sock) {
switch (fork()) {
case 0:
close(*fd);
exit(handleDownload(slave_sock));
default:
close(slave_sock);
break;
}
}
}
}
void DlgFmncPrjImpelb::handleRequest(
DbsFmnc* dbsfmnc
, ReqFmnc* req
) {
if (req->ixVBasetype == ReqFmnc::VecVBasetype::CMD) {
reqCmd = req;
if (req->cmd.compare("cmdset") == 0) {
} else {
cout << "\tinvalid command!" << endl;
};
if (!req->retain) reqCmd = NULL;
} else if (req->ixVBasetype == ReqFmnc::VecVBasetype::REGULAR) {
if (req->dpchapp->ixFmncVDpch == VecFmncVDpch::DPCHAPPFMNCINIT) {
handleDpchAppFmncInit(dbsfmnc, (DpchAppFmncInit*) (req->dpchapp), &(req->dpcheng));
} else if (req->dpchapp->ixFmncVDpch == VecFmncVDpch::DPCHAPPDLGFMNCPRJIMPELBDATA) {
DpchAppData* dpchappdata = (DpchAppData*) (req->dpchapp);
if (dpchappdata->has(DpchAppData::CONTIAC)) {
handleDpchAppDataContiac(dbsfmnc, &(dpchappdata->contiac), &(req->dpcheng));
};
} else if (req->dpchapp->ixFmncVDpch == VecFmncVDpch::DPCHAPPDLGFMNCPRJIMPELBDO) {
DpchAppDo* dpchappdo = (DpchAppDo*) (req->dpchapp);
if (dpchappdo->ixVDo != 0) {
if (dpchappdo->ixVDo == VecVDo::BUTDNECLICK) {
handleDpchAppDoButDneClick(dbsfmnc, &(req->dpcheng));
};
} else if (dpchappdo->ixVDoImp != 0) {
if (dpchappdo->ixVDoImp == VecVDoImp::BUTRUNCLICK) {
handleDpchAppDoImpButRunClick(dbsfmnc, &(req->dpcheng));
} else if (dpchappdo->ixVDoImp == VecVDoImp::BUTSTOCLICK) {
handleDpchAppDoImpButStoClick(dbsfmnc, &(req->dpcheng));
};
};
} else if (req->dpchapp->ixFmncVDpch == VecFmncVDpch::DPCHAPPFMNCALERT) {
handleDpchAppFmncAlert(dbsfmnc, (DpchAppFmncAlert*) (req->dpchapp), &(req->dpcheng));
};
// IP handleRequest.upload --- BEGIN
} else if (req->ixVBasetype == ReqFmnc::VecVBasetype::UPLOAD) {
handleUpload(dbsfmnc, req->filename);
// IP handleRequest.upload --- END
// IP handleRequest.download --- BEGIN
} else if (req->ixVBasetype == ReqFmnc::VecVBasetype::DOWNLOAD) {
req->filename = handleDownload(dbsfmnc);
// IP handleRequest.download --- END
// IP handleRequest.timer --- BEGIN
} else if (req->ixVBasetype == ReqFmnc::VecVBasetype::TIMER) {
handleTimer(dbsfmnc, req->sref);
// IP handleRequest.timer --- END
};
};