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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>
YggdrasilTask::YggdrasilTask(MojangAccount *account, QObject *parent)
: Task(parent), m_account(account)
{
}
YggdrasilTask::~YggdrasilTask()
{
if (m_error)
delete m_error;
}
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();
connect(worker.get(), SIGNAL(finished(QNetworkReply *)), this,
SLOT(processReply(QNetworkReply *)));
QUrl reqUrl("https://authserver.mojang.com/" + getEndpoint());
QNetworkRequest netRequest(reqUrl);
netRequest.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
QByteArray requestData = doc.toJson();
m_netReply = worker->post(netRequest, requestData);
}
void YggdrasilTask::processReply(QNetworkReply *reply)
{
setStatus(getStateMessage(STATE_PROCESSING_RESPONSE));
if (m_netReply != reply)
// Wrong reply for some reason...
return;
if (reply->error() == QNetworkReply::OperationCanceledError)
{
emitFailed("Yggdrasil task cancelled.");
return;
}
else
{
// 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 = reply->readAll();
QJsonDocument doc = QJsonDocument::fromJson(replyData, &jsonError);
// Check the response code.
int responseCode = reply->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()))
{
YggdrasilTask::Error *err = getError();
if (err)
emitFailed(err->getErrorMessage());
else
emitFailed(tr("An unknown error occurred when processing the response "
"from the authentication server."));
}
else
{
emitSucceeded();
}
}
else
{
emitFailed(tr("Failed to parse Yggdrasil JSON response: %1 at offset %2.")
.arg(jsonError.errorString())
.arg(jsonError.offset));
}
}
else
{
// 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(reply->errorString()));
}
}
}
}
QString YggdrasilTask::processError(QJsonObject responseData)
{
QJsonValue errorVal = responseData.value("error");
QJsonValue msgVal = responseData.value("errorMessage");
QJsonValue causeVal = responseData.value("cause");
if (errorVal.isString() && msgVal.isString())
{
m_error = new Error(errorVal.toString(""), msgVal.toString(""), causeVal.toString(""));
return m_error->getDisplayMessage();
}
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.");
}
}
YggdrasilTask::Error *YggdrasilTask::getError() const
{
return this->m_error;
}
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