Use PolyMC's CurseForge workaround (#47)

* Curseforge workarounds

This should allow people to use Curseforge without having to manually
paste a working key into the settings or change the user agent.

Signed-off-by: Lenny McLennington <lenny@sneed.church>

* chore: update cf api key api url

Sascha says the domain name we're using is not gonna be renewed, so I'm
switching it to a domain controlled by me instead so that this won't be
a problem in the future.

Signed-off-by: Lenny McLennington <lenny@sneed.church>

* feat: add ability to disable cf api key fetching

by setting the cf api key api url to a blank string

Signed-off-by: Lenny McLennington <lenny@sneed.church>

* don't ask before fetching key

* change polymc mention to pollymc

Signed-off-by: Lenny McLennington <lenny@sneed.church>
Co-authored-by: Lenny McLennington <lenny@sneed.church>

launcher/net/Download.cpp

@@ -117,11 +117,13 @@ void Download::executeTask()
             return;
     }
 
-    request.setHeader(QNetworkRequest::UserAgentHeader, APPLICATION->getUserAgent().toUtf8());
     if (APPLICATION->capabilities() & Application::SupportsFlame
             && request.url().host().contains("api.curseforge.com")) {
         request.setRawHeader("x-api-key", APPLICATION->getFlameAPIKey().toUtf8());
-    };
+    }
+    else {
+        request.setHeader(QNetworkRequest::UserAgentHeader, APPLICATION->getUserAgent().toUtf8());
+    }
 
     QNetworkReply* rep = m_network->get(request);
 

launcher/net/FetchFlameAPIKey.cpp

@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Lenny McLennington <lenny@sneed.church>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "FetchFlameAPIKey.h"
+#include "Application.h"
+#include <BuildConfig.h>
+#include <Json.h>
+
+#include <ui/dialogs/ProgressDialog.h>
+#include <ui/dialogs/CustomMessageBox.h>
+
+FetchFlameAPIKey::FetchFlameAPIKey(QObject *parent)
+    : Task{parent}
+{
+
+}
+
+void FetchFlameAPIKey::executeTask()
+{
+    QNetworkRequest req(BuildConfig.FLAME_API_KEY_API_URL);
+    m_reply.reset(APPLICATION->network()->get(req));
+    connect(m_reply.get(), &QNetworkReply::downloadProgress, this, &Task::setProgress);
+    connect(m_reply.get(), &QNetworkReply::finished, this, &FetchFlameAPIKey::downloadFinished);
+    connect(m_reply.get(),
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
+            &QNetworkReply::errorOccurred,
+#else
+            qOverload<QNetworkReply::NetworkError>(&QNetworkReply::error),
+#endif
+            this,
+            [this] (QNetworkReply::NetworkError error) {
+                qCritical() << "Network error: " << error;
+                emitFailed(m_reply->errorString());
+            });
+
+    setStatus(tr("Fetching Curseforge core API key"));
+}
+
+void FetchFlameAPIKey::downloadFinished()
+{
+    auto res = m_reply->readAll();
+    auto doc = QJsonDocument::fromJson(res);
+
+    qDebug() << doc;
+
+    try {
+        auto obj = Json::requireObject(doc);
+
+        auto success = Json::requireBoolean(obj, "ok");
+
+        if (success)
+        {
+            m_result = Json::requireString(obj, "token");
+            emitSucceeded();
+        }
+        else
+        {
+            emitFailed("The API returned an output indicating failure.");
+        }
+    }
+    catch (Json::JsonException&)
+    {
+        qCritical() << "Output: " << res;
+        emitFailed("The API returned an unexpected JSON output.");
+    }
+}

launcher/net/FetchFlameAPIKey.h

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (C) 2022 Lenny McLennington <lenny@sneed.church>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef FETCHFLAMEAPIKEY_H
+#define FETCHFLAMEAPIKEY_H
+
+#include <QObject>
+#include <QNetworkReply>
+#include <tasks/Task.h>
+
+class FetchFlameAPIKey : public Task
+{
+    Q_OBJECT
+   public:
+    explicit FetchFlameAPIKey(QObject *parent = nullptr);
+
+    QString m_result;
+
+   public slots:
+    void downloadFinished();
+
+   protected:
+    virtual void executeTask();
+
+
+    std::shared_ptr<QNetworkReply> m_reply;
+};
+
+#endif // FETCHFLAMEAPIKEY_H

launcher/net/Upload.cpp

@@ -215,11 +215,13 @@ namespace Net {
                 return;
         }
 
-        request.setHeader(QNetworkRequest::UserAgentHeader, APPLICATION->getUserAgent().toUtf8());
         if (APPLICATION->capabilities() & Application::SupportsFlame
                 && request.url().host().contains("api.curseforge.com")) {
             request.setRawHeader("x-api-key", APPLICATION->getFlameAPIKey().toUtf8());
         }
+        else {
+            request.setHeader(QNetworkRequest::UserAgentHeader, APPLICATION->getUserAgent().toUtf8());
+        }
         //TODO other types of post requests ?
         request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
         QNetworkReply* rep = m_network->post(request, m_post_data);