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#include "thumbnail.h"
#include "http.h"
#include "exceptions.h"
#include "globals.h"
#include <QEventLoop>
#include <QtNetwork>
#include <QSharedPointer>
#include <QUrl>
/** @cond HIDDEN_SYMBOLS */
namespace qevercloud {
QNetworkAccessManager* evernoteNetworkAccessManager() {
static QSharedPointer<QNetworkAccessManager> networkAccessManager_;
static QMutex networkAccessManagerMutex;
QMutexLocker mutexLocker(&networkAccessManagerMutex);
if(networkAccessManager_.isNull()) {
networkAccessManager_ = QSharedPointer<QNetworkAccessManager>(new QNetworkAccessManager);
}
return networkAccessManager_.data();
}
ReplyFetcher::ReplyFetcher(): success_(false), httpStatusCode_(0)
{
ticker_ = new QTimer(this);
connect(ticker_, SIGNAL(timeout()), this, SLOT(checkForTimeout()));
}
void ReplyFetcher::start(QNetworkAccessManager *nam, QUrl url)
{
QNetworkRequest request;
request.setUrl(url);
start(nam, request);
}
void ReplyFetcher::start(QNetworkAccessManager *nam, QNetworkRequest request, QByteArray postData)
{
httpStatusCode_= 0;
errorText_.clear();
receivedData_.clear();
success_ = true; // not in finished() signal handler, it might be not called according to the docs
// besides, I've added timeout feature
lastNetworkTime_ = QDateTime::currentMSecsSinceEpoch();
ticker_->start(1000);
if(postData.isNull()) {
reply = QSharedPointer<QNetworkReply>(nam->get(request), &QObject::deleteLater);
} else {
reply = QSharedPointer<QNetworkReply>(nam->post(request, postData), &QObject::deleteLater);
}
connect(reply.data(), SIGNAL(finished()), this, SLOT(onFinished()));
connect(reply.data(), SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(onError()));
connect(reply.data(), SIGNAL(sslErrors(QList<QSslError>)), this, SLOT(onSslErrors(QList<QSslError>)));
connect(reply.data(), SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(onDownloadProgress(qint64,qint64)));
}
void ReplyFetcher::onDownloadProgress(qint64, qint64)
{
lastNetworkTime_ = QDateTime::currentMSecsSinceEpoch();
}
void ReplyFetcher::checkForTimeout()
{
const int connectionTimeout = 30*1000;
if((lastNetworkTime_ - QDateTime::currentMSecsSinceEpoch()) > connectionTimeout) {
setError(QStringLiteral("Connection timeout."));
}
}
void ReplyFetcher::onFinished()
{
ticker_->stop();
if(!success_) return;
receivedData_ = reply->readAll();
httpStatusCode_ = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
disconnect(reply.data());
emit replyFetched(this);
}
void ReplyFetcher::onError()
{
setError(reply->errorString());
}
void ReplyFetcher::onSslErrors(QList<QSslError> l)
{
QString errorText = QStringLiteral("SSL Errors:\n");
foreach(QSslError e, l) {
errorText += e.errorString().append('\n');
}
setError(errorText);
}
void ReplyFetcher::setError(QString errorText)
{
success_ = false;
ticker_->stop();
errorText_ = errorText;
disconnect(reply.data());
emit replyFetched(this);
}
QByteArray simpleDownload(QNetworkAccessManager* nam, QNetworkRequest request, QByteArray postData = QByteArray(), int* httpStatusCode = 0) {
ReplyFetcher f;
QEventLoop loop;
QObject::connect(&f, SIGNAL(replyFetched(QObject*)), &loop, SLOT(quit()));
f.start(nam, request, postData);
loop.exec(QEventLoop::ExcludeUserInputEvents);
if(httpStatusCode) *httpStatusCode = f.httpStatusCode();
if(f.isError()) {
throw EverCloudException(f.errorText());
}
return f.receivedData();
}
QNetworkRequest createEvernoteRequest(QString url)
{
QNetworkRequest request;
request.setUrl(url);
request.setHeader(QNetworkRequest::ContentTypeHeader, QStringLiteral("application/x-thrift"));
#if QT_VERSION < 0x050000
request.setRawHeader("User-Agent", QString("QEverCloud %1.%2").arg(libraryVersion / 10000).arg(libraryVersion % 10000).toLatin1());
#else
request.setHeader(QNetworkRequest::UserAgentHeader, QStringLiteral("QEverCloud %1.%2").arg(libraryVersion / 10000).arg(libraryVersion % 10000));
#endif
request.setRawHeader("Accept", "application/x-thrift");
return request;
}
QByteArray askEvernote(QString url, QByteArray postData) {
int httpStatusCode = 0;
QByteArray reply = simpleDownload(evernoteNetworkAccessManager(), createEvernoteRequest(url), postData, &httpStatusCode);
if(httpStatusCode != 200) {
throw EverCloudException(QStringLiteral("HTTP Status Code = %1").arg(httpStatusCode));
}
return reply;
}
QByteArray Thumbnail::download(Guid guid, bool isPublic, bool isResourceGuid)
{
int httpStatusCode = 0;
QPair<QNetworkRequest, QByteArray> request = createPostRequest(guid, isPublic, isResourceGuid);
QByteArray reply = simpleDownload(evernoteNetworkAccessManager(), request.first, request.second, &httpStatusCode);
if(httpStatusCode != 200) {
throw EverCloudException(QStringLiteral("HTTP Status Code = %1").arg(httpStatusCode));
}
return reply;
}
AsyncResult* Thumbnail::downloadAsync(Guid guid, bool isPublic, bool isResourceGuid)
{
QPair<QNetworkRequest, QByteArray> pair = createPostRequest(guid, isPublic, isResourceGuid);
return new AsyncResult(pair.first, pair.second);
}
QPair<QNetworkRequest, QByteArray> Thumbnail::createPostRequest(Guid guid, bool isPublic, bool isResourceGuid)
{
QByteArray postData = ""; // not QByteArray()! or else ReplyFetcher will not work.
QNetworkRequest request;
QString urlPattern;
if(isResourceGuid) {
urlPattern = QStringLiteral("https://%1/shard/%2/thm/res/%3");
} else {
urlPattern = QStringLiteral("https://%1/shard/%2/thm/note/%3");
}
QString url = urlPattern.arg(host_).arg(shardId_).arg(guid);
QString ext;
switch(imageType_) {
case ImageType::BMP: ext = QStringLiteral(".bmp"); break;
case ImageType::GIF: ext = QStringLiteral(".gif"); break;
case ImageType::JPEG: ext = QStringLiteral(".jpg"); break;
default: ext = QStringLiteral(".png"); break;
}
url += ext;
if(size_ != 300) {
url += QStringLiteral("?size=%1").arg(size_);
}
request.setUrl(QUrl(url));
request.setHeader(QNetworkRequest::ContentTypeHeader, QStringLiteral("application/x-www-form-urlencoded"));
if(!isPublic) {
postData = QByteArray("auth=")+ QUrl::toPercentEncoding(authenticationToken_);
}
return qMakePair(request, postData);
}
}
/** @endcond */
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