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Verify access tokens before launching Minecraft

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Kind of an important thing to do... Heh...
This commit is contained in:
Andrew
2013-11-28 20:45:52 -06:00
parent 1f150dcb78
commit bfc9e1e5d5
12 changed files with 440 additions and 73 deletions
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66
logic/auth/ValidateTask.cpp Normal file
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@ -0,0 +1,66 @@
/* 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/ValidateTask.h>
#include <logic/auth/MojangAccount.h>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>
#include <QVariant>
#include <QDebug>
#include "logger/QsLog.h"
ValidateTask::ValidateTask(MojangAccountPtr account, QObject* parent) :
YggdrasilTask(account, parent)
{
}
QJsonObject ValidateTask::getRequestContent() const
{
QJsonObject req;
req.insert("accessToken", getMojangAccount()->accessToken());
return req;
}
bool ValidateTask::processResponse(QJsonObject responseData)
{
// Assume that if processError wasn't called, then the request was successful.
emitSucceeded();
return true;
}
QString ValidateTask::getEndpoint() const
{
return "validate";
}
QString ValidateTask::getStateMessage(const YggdrasilTask::State state) const
{
switch (state)
{
case STATE_SENDING_REQUEST:
return tr("Validating Access Token: Sending request.");
case STATE_PROCESSING_RESPONSE:
return tr("Validating Access Token: Processing response.");
default:
return YggdrasilTask::getStateMessage(state);
}
}

44
logic/auth/ValidateTask.h Normal file
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@ -0,0 +1,44 @@
/* 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.
*/
#pragma once
#include <logic/auth/YggdrasilTask.h>
#include <QObject>
#include <QString>
#include <QJsonObject>
/**
* The validate task takes a MojangAccount and checks to make sure its access token is valid.
*/
class ValidateTask : public YggdrasilTask
{
Q_OBJECT
public:
ValidateTask(MojangAccountPtr account, QObject* parent=0);
protected:
virtual QJsonObject getRequestContent() const;
virtual QString getEndpoint() const;
virtual bool processResponse(QJsonObject responseData);
QString getStateMessage(const YggdrasilTask::State state) const;
private:
};

119
logic/auth/YggdrasilTask.cpp
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@ -64,78 +64,65 @@ void YggdrasilTask::processReply(QNetworkReply* reply)
// Wrong reply for some reason...
return;
// Check for errors.
switch (reply->error())
if (reply->error() == QNetworkReply::OperationCanceledError)
{
case QNetworkReply::NoError:
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)
{
// 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();
switch (responseCode)
// 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)
{
case 200:
if (!processResponse(replyData.size() > 0 ? doc.object() : QJsonObject()))
{
// If the response code was 200, then there shouldn't be an error. Make sure anyways.
switch (jsonError.error)
{
case QJsonParseError::NoError:
if (!processResponse(doc.object()))
{
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();
}
break;
default:
emitFailed(tr("Failed to parse Yggdrasil JSON response: \"%1\".").arg(jsonError.errorString()));
break;
}
break;
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();
}
default:
// If the response code was something else, 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.
switch (jsonError.error)
{
case 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.
processError(doc.object());
break;
default:
// The server didn't say anything regarding the error. Give the user an unknown error.
emitFailed(tr("Login failed: Unknown HTTP code %1 encountered.").arg(responseCode));
break;
}
break;
}
break;
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()));
}
}
case QNetworkReply::OperationCanceledError:
emitFailed(tr("Login canceled."));
break;
default:
emitFailed(tr("An unknown error occurred when trying to communicate with the authentication server."));
break;
}
}
@ -145,7 +132,7 @@ QString YggdrasilTask::processError(QJsonObject responseData)
QJsonValue msgVal = responseData.value("errorMessage");
QJsonValue causeVal = responseData.value("cause");
if (errorVal.isString() && msgVal.isString() && causeVal.isString())
if (errorVal.isString() && msgVal.isString())
{
m_error = new Error(errorVal.toString(""), msgVal.toString(""), causeVal.toString(""));
return m_error->getDisplayMessage();

2
logic/auth/YggdrasilTask.h
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@ -99,6 +99,8 @@ protected:
* If an error occurred, this should emit a failed signal and return false.
* If Yggdrasil gave an error response, it should call setError() first, and then return false.
* Otherwise, it should return true.
* Note: If the response from the server was blank, and the HTTP code was 200, this function is called with
* an empty QJsonObject.
*/
virtual bool processResponse(QJsonObject responseData) = 0;

15
logic/tasks/Task.cpp
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@ -53,6 +53,8 @@ void Task::start()
void Task::emitFailed(QString reason)
{
m_running = false;
m_succeeded = false;
m_failReason = reason;
QLOG_ERROR() << "Task failed: " << reason;
emit failed(reason);
}
@ -60,6 +62,8 @@ void Task::emitFailed(QString reason)
void Task::emitSucceeded()
{
m_running = false;
m_succeeded = true;
QLOG_INFO() << "Task succeeded";
emit succeeded();
}
@ -67,3 +71,14 @@ bool Task::isRunning() const
{
return m_running;
}
bool Task::successful() const
{
return m_succeeded;
}
QString Task::failReason() const
{
return m_failReason;
}

14
logic/tasks/Task.h
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@ -29,6 +29,18 @@ public:
virtual void getProgress(qint64 &current, qint64 &total);
virtual bool isRunning() const;
/*!
* True if this task was successful.
* If the task failed or is still running, returns false.
*/
virtual bool successful() const;
/*!
* Returns the string that was passed to emitFailed as the error message when the task failed.
* If the task hasn't failed, returns an empty string.
*/
virtual QString failReason() const;
public
slots:
virtual void start();
@ -48,4 +60,6 @@ protected:
QString m_status;
int m_progress = 0;
bool m_running = false;
bool m_succeeded = false;
QString m_failReason = "";
};