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#include "oauth.h"
#include "http.h"
#include <QVBoxLayout>
#include <QNetworkReply>
#ifdef USE_QT_WEB_ENGINE
#include <QWebEngineHistory>
#else
#include <QWebSettings>
#include <QWebHistory>
#endif
#include <QUuid>
#include <cstring>
namespace {
quint64 random64()
{
quint64 res = 0;
for(int i = 0; i < 8; i++) {
res += static_cast<quint64>(qrand() % 256) << i*8;
}
QByteArray randomData = QUuid::createUuid().toRfc4122();
quint64 random;
std::memcpy(&random, &randomData.constData()[0], sizeof(random));
res ^= random;
std::memcpy(&random, &randomData.constData()[sizeof(random)], sizeof(random));
res ^= random;
return res;
}
typedef quint64 (*NonceGenerator)();
NonceGenerator nonceGenerator_ = random64;
NonceGenerator nonceGenerator() {return nonceGenerator_;}
}
void setNonceGenerator(quint64 (*nonceGenerator)())
{
nonceGenerator_ = nonceGenerator;
}
qevercloud::EvernoteOAuthWebView::EvernoteOAuthWebView(QWidget *parent)
#ifdef USE_QT_WEB_ENGINE
: QWebEngineView(parent), isSucceeded_(false)
#else
: QWebView(parent), isSucceeded_(false)
#endif
{
#ifndef USE_QT_WEB_ENGINE
page()->setNetworkAccessManager(evernoteNetworkAccessManager());
#endif
}
void qevercloud::EvernoteOAuthWebView::setSizeHint(QSize sizeHint)
{
sizeHint_ = sizeHint;
updateGeometry();
}
void qevercloud::EvernoteOAuthWebView::authenticate(QString host, QString consumerKey, QString consumerSecret)
{
host_ = host;
isSucceeded_ = false;
this->setHtml("");
this->history()->clear();
qint64 timestamp = QDateTime::currentMSecsSinceEpoch()/1000;
qint64 nonce = nonceGenerator()();
oauthUrlBase_ = QStringLiteral("https://%1/oauth?oauth_consumer_key=%2&oauth_signature=%3&oauth_signature_method=PLAINTEXT&oauth_timestamp=%4&oauth_nonce=%5")
.arg(host).arg(consumerKey).arg(consumerSecret).arg(timestamp).arg(nonce);
// step 1: acquire temporary token
ReplyFetcher* replyFetcher = new ReplyFetcher();
connect(replyFetcher, QEC_SIGNAL(ReplyFetcher,replyFetched,QObject*),
this, QEC_SLOT(EvernoteOAuthWebView,temporaryFinished,QObject*));
QUrl url(oauthUrlBase_ + QStringLiteral("&oauth_callback=nnoauth"));
#ifdef USE_QT_WEB_ENGINE
replyFetcher->start(evernoteNetworkAccessManager(), url);
#else
replyFetcher->start(page()->networkAccessManager(), url);
#endif
}
void qevercloud::EvernoteOAuthWebView::temporaryFinished(QObject *rf)
{
ReplyFetcher* replyFetcher = qobject_cast<ReplyFetcher*>(rf);
if(replyFetcher->isError()) {
setError(replyFetcher->errorText());
} else {
QString reply = QString(replyFetcher->receivedData());
int index = reply.indexOf(QStringLiteral("&oauth_token_secret"));
QString token = reply.left(index);
// step 2: directing a user to the login page
connect(this, SIGNAL(urlChanged(QUrl)), this, SLOT(onUrlChanged(QUrl)));
QUrl loginUrl(QStringLiteral("https://%1//OAuth.action?%2").arg(host_).arg(token));
this->setUrl(loginUrl);
}
replyFetcher->deleteLater();
}
void qevercloud::EvernoteOAuthWebView::onUrlChanged(const QUrl &url)
{
// step 3: catch the rediret to our callback url (nnoauth)
QString s = url.toString();
QString oauthMarker = QStringLiteral("?oauth_token=");
if(s.contains(QStringLiteral("nnoauth?")) && s.contains(oauthMarker)) {
if(s.contains(QStringLiteral("&oauth_verifier="))) { // success
QString token = s.mid(s.indexOf(oauthMarker) + oauthMarker.length());
// step 4: acquire permanent token
ReplyFetcher* replyFetcher = new ReplyFetcher();
connect(replyFetcher, QEC_SIGNAL(ReplyFetcher,replyFetched,QObject*),
this, QEC_SLOT(EvernoteOAuthWebView,permanentFinished,QObject*));
QUrl url(oauthUrlBase_ + QStringLiteral("&oauth_token=%1").arg(token));
#ifdef USE_QT_WEB_ENGINE
replyFetcher->start(evernoteNetworkAccessManager(), url);
#else
replyFetcher->start(page()->networkAccessManager(), url);
#endif
} else {
setError(QStringLiteral("Authentification failed."));
}
disconnect(this, SIGNAL(urlChanged(QUrl)), this, SLOT(onUrlChanged(QUrl)));
QMetaObject::invokeMethod(this, "clearHtml", Qt::QueuedConnection);
}
}
void qevercloud::EvernoteOAuthWebView::permanentFinished(QObject *rf)
{
ReplyFetcher* replyFetcher = qobject_cast<ReplyFetcher*>(rf);
if(replyFetcher->isError()) {
setError(replyFetcher->errorText());
} else {
isSucceeded_ = true;
QByteArray reply = replyFetcher->receivedData();
QMap<QString, QString> params;
QList<QByteArray> vals = reply.split('&');
for(int i = 0; i < vals.length(); i++) {
QString decoded = QUrl::fromPercentEncoding(vals[i]);
int pos = decoded.indexOf('=');
params[decoded.left(pos).trimmed()] = decoded.mid(pos + 1);
}
oauthResult_.noteStoreUrl = params[QStringLiteral("edam_noteStoreUrl")];
oauthResult_.expires = Timestamp(params[QStringLiteral("edam_expires")].toLongLong());
oauthResult_.shardId = params[QStringLiteral("edam_shard")];
oauthResult_.userId = params[QStringLiteral("edam_userId")].toInt();
oauthResult_.webApiUrlPrefix = params[QStringLiteral("edam_webApiUrlPrefix")];
oauthResult_.authenticationToken = params[QStringLiteral("oauth_token")];
emit authenticationFinished(true);
emit authenticationSuceeded();
}
replyFetcher->deleteLater();
}
void qevercloud::EvernoteOAuthWebView::setError(QString errorText)
{
isSucceeded_ = false;
this->setHtml("");
this->history()->clear();
errorText_ = errorText;
emit authenticationFinished(false);
emit authenticationFailed();
}
void qevercloud::EvernoteOAuthWebView::clearHtml()
{
setHtml("");
}
qevercloud::EvernoteOAuthDialog::EvernoteOAuthDialog(QString consumerKey, QString consumerSecret, QString host, QWidget *parent)
: QDialog(parent), host_(host), consumerKey_(consumerKey), consumerSecret_(consumerSecret)
{
setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
webView_ = new EvernoteOAuthWebView(this);
connect(webView_, SIGNAL(authenticationSuceeded()), this, SLOT(accept()), Qt::QueuedConnection);
connect(webView_, SIGNAL(authenticationFailed()), this, SLOT(reject()), Qt::QueuedConnection);
QVBoxLayout* layout_ = new QVBoxLayout;
layout_->addWidget(webView_);
setLayout(layout_);
webView_->setSizeHint(QSize(768,576));
adjustSize();
}
qevercloud::EvernoteOAuthDialog::~EvernoteOAuthDialog()
{
#ifndef USE_QT_WEB_ENGINE
QWebSettings::clearMemoryCaches();
#endif
}
int qevercloud::EvernoteOAuthDialog::exec()
{
webView_->authenticate(host_, consumerKey_, consumerSecret_);
return QDialog::exec();
}
void qevercloud::EvernoteOAuthDialog::open()
{
QDialog::open();
webView_->authenticate(host_, consumerKey_, consumerSecret_);
}
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