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/* Copyright 2013 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <logic/auth/YggdrasilTask.h>
#include <QObject>
#include <QString>
#include <QJsonObject>
#include <QJsonDocument>
#include <QNetworkReply>
#include <QByteArray>
#include <MultiMC.h>
#include <logic/auth/MojangAccount.h>
#include <logic/net/URLConstants.h>
YggdrasilTask::YggdrasilTask(MojangAccount *account, QObject *parent)
: Task(parent), m_account(account)
{
}
void YggdrasilTask::executeTask()
{
setStatus(getStateMessage(STATE_SENDING_REQUEST));
// Get the content of the request we're going to send to the server.
QJsonDocument doc(getRequestContent());
auto worker = MMC->qnam();
QUrl reqUrl("https://" + URLConstants::AUTH_BASE + getEndpoint());
QNetworkRequest netRequest(reqUrl);
netRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
QByteArray requestData = doc.toJson();
m_netReply = worker->post(netRequest, requestData);
connect(m_netReply, &QNetworkReply::finished, this, &YggdrasilTask::processReply);
connect(m_netReply, &QNetworkReply::uploadProgress, this, &YggdrasilTask::refreshTimers);
connect(m_netReply, &QNetworkReply::downloadProgress, this, &YggdrasilTask::refreshTimers);
timeout_keeper.setSingleShot(true);
timeout_keeper.start(timeout_max);
counter.setSingleShot(false);
counter.start(time_step);
progress(0, timeout_max);
connect(&timeout_keeper, &QTimer::timeout, this, &YggdrasilTask::abort);
connect(&counter, &QTimer::timeout, this, &YggdrasilTask::heartbeat);
}
void YggdrasilTask::refreshTimers(qint64, qint64)
{
timeout_keeper.stop();
timeout_keeper.start(timeout_max);
progress(count = 0, timeout_max);
}
void YggdrasilTask::heartbeat()
{
count += time_step;
progress(count, timeout_max);
}
void YggdrasilTask::abort()
{
progress(timeout_max, timeout_max);
m_netReply->abort();
}
void YggdrasilTask::processReply()
{
setStatus(getStateMessage(STATE_PROCESSING_RESPONSE));
// any network errors lead to offline mode right now
if (m_netReply->error() >= QNetworkReply::ConnectionRefusedError &&
m_netReply->error() <= QNetworkReply::UnknownNetworkError)
{
// WARNING/FIXME: the value here is used in MojangAccount to detect the cancel/timeout
emitFailed("Yggdrasil task cancelled.");
return;
}
// Try to parse the response regardless of the response code.
// Sometimes the auth server will give more information and an error code.
QJsonParseError jsonError;
QByteArray replyData = m_netReply->readAll();
QJsonDocument doc = QJsonDocument::fromJson(replyData, &jsonError);
// Check the response code.
int responseCode = m_netReply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if (responseCode == 200)
{
// If the response code was 200, then there shouldn't be an error. Make sure
// anyways.
// Also, sometimes an empty reply indicates success. If there was no data received,
// pass an empty json object to the processResponse function.
if (jsonError.error == QJsonParseError::NoError || replyData.size() == 0)
{
if (processResponse(replyData.size() > 0 ? doc.object() : QJsonObject()))
{
emitSucceeded();
return;
}
// errors happened anyway?
emitFailed(m_error ? m_error->m_errorMessageVerbose
: tr("An unknown error occurred when processing the response "
"from the authentication server."));
}
else
{
emitFailed(tr("Failed to parse Yggdrasil JSON response: %1 at offset %2.")
.arg(jsonError.errorString())
.arg(jsonError.offset));
}
return;
}
// If the response code was not 200, then Yggdrasil may have given us information
// about the error.
// If we can parse the response, then get information from it. Otherwise just say
// there was an unknown error.
if (jsonError.error == QJsonParseError::NoError)
{
// We were able to parse the server's response. Woo!
// Call processError. If a subclass has overridden it then they'll handle their
// stuff there.
QLOG_DEBUG() << "The request failed, but the server gave us an error message. "
"Processing error.";
emitFailed(processError(doc.object()));
}
else
{
// The server didn't say anything regarding the error. Give the user an unknown
// error.
QLOG_DEBUG() << "The request failed and the server gave no error message. "
"Unknown error.";
emitFailed(tr("An unknown error occurred when trying to communicate with the "
"authentication server: %1").arg(m_netReply->errorString()));
}
}
QString YggdrasilTask::processError(QJsonObject responseData)
{
QJsonValue errorVal = responseData.value("error");
QJsonValue errorMessageValue = responseData.value("errorMessage");
QJsonValue causeVal = responseData.value("cause");
if (errorVal.isString() && errorMessageValue.isString())
{
m_error = std::shared_ptr<Error>(new Error{
errorVal.toString(""), errorMessageValue.toString(""), causeVal.toString("")});
return m_error->m_errorMessageVerbose;
}
else
{
// Error is not in standard format. Don't set m_error and return unknown error.
return tr("An unknown Yggdrasil error occurred.");
}
}
QString YggdrasilTask::getStateMessage(const YggdrasilTask::State state) const
{
switch (state)
{
case STATE_SENDING_REQUEST:
return tr("Sending request to auth servers...");
case STATE_PROCESSING_RESPONSE:
return tr("Processing response from servers...");
default:
return tr("Processing. Please wait...");
}
}
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