Add ability to change assets download server (#3875)

buildconfig/BuildConfig.h

@@ -166,7 +166,7 @@ class Config {
     QString DISCORD_URL;
     QString SUBREDDIT_URL;
 
-    QString RESOURCE_BASE = "https://resources.download.minecraft.net/";
+    QString DEFAULT_RESOURCE_BASE = "https://resources.download.minecraft.net/";
     QString LIBRARY_BASE = "https://libraries.minecraft.net/";
     QString IMGUR_BASE_URL = "https://api.imgur.com/3/";
     QString FMLLIBS_BASE_URL;

launcher/Application.cpp

@@ -864,6 +864,15 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
             // get rid of invalid meta urls
             if (!metaUrl.isValid() || (metaUrl.scheme() != "http" && metaUrl.scheme() != "https"))
                 m_settings->reset("MetaURLOverride");
+
+            // Resource URL
+            m_settings->registerSetting("ResourceURL", BuildConfig.DEFAULT_RESOURCE_BASE);
+
+            QUrl resourceUrl(m_settings->get("ResourceURL").toString());
+
+            // get rid of invalid resource urls
+            if (!resourceUrl.isValid() || (resourceUrl.scheme() != "http" && resourceUrl.scheme() != "https"))
+                m_settings->reset("ResourceURL");
         }
 
         m_settings->registerSetting("CloseAfterLaunch", false);

launcher/minecraft/AssetsUtils.cpp

@@ -298,7 +298,8 @@ QString AssetObject::getLocalPath()
 
 QUrl AssetObject::getUrl()
 {
-    return BuildConfig.RESOURCE_BASE + getRelPath();
+    auto resourceURL = APPLICATION->settings()->get("ResourceURL").toString();
+    return resourceURL + getRelPath();
 }
 
 QString AssetObject::getRelPath()

launcher/minecraft/update/AssetUpdateTask.cpp

@@ -1,5 +1,6 @@
 #include "AssetUpdateTask.h"
 
+#include "BuildConfig.h"
 #include "launch/LaunchStep.h"
 #include "minecraft/AssetsUtils.h"
 #include "minecraft/MinecraftInstance.h"
@@ -71,7 +72,12 @@ void AssetUpdateTask::assetIndexFinished()
 
     auto job = index.getDownloadJob();
     if (job) {
-        setStatus(tr("Getting the assets files from Mojang..."));
+        QString resourceURL = APPLICATION->settings()->get("ResourceURL").toString();
+        QString source = tr("Mojang");
+        if (resourceURL != BuildConfig.DEFAULT_RESOURCE_BASE) {
+            source = QUrl(resourceURL).host();
+        }
+        setStatus(tr("Getting the assets files from %1...").arg(source));
         downloadJob = job;
         connect(downloadJob.get(), &NetJob::succeeded, this, &AssetUpdateTask::emitSucceeded);
         connect(downloadJob.get(), &NetJob::failed, this, &AssetUpdateTask::assetsFailed);

launcher/ui/pages/global/APIPage.cpp

@@ -76,6 +76,7 @@ APIPage::APIPage(QWidget* parent) : QWidget(parent), ui(new Ui::APIPage)
     updateBaseURLPlaceholder(ui->pasteTypeComboBox->currentIndex());
     // NOTE: this allows http://, but we replace that with https later anyway
     ui->metaURL->setValidator(new QRegularExpressionValidator(s_validUrlRegExp, ui->metaURL));
+    ui->resourceURL->setValidator(new QRegularExpressionValidator(s_validUrlRegExp, ui->resourceURL));
     ui->baseURLEntry->setValidator(new QRegularExpressionValidator(s_validUrlRegExp, ui->baseURLEntry));
     ui->msaClientID->setValidator(new QRegularExpressionValidator(s_validMSAClientID, ui->msaClientID));
     ui->flameKey->setValidator(new QRegularExpressionValidator(s_validFlameKey, ui->flameKey));
@@ -137,6 +138,8 @@ void APIPage::loadSettings()
     ui->msaClientID->setText(msaClientID);
     QString metaURL = s->get("MetaURLOverride").toString();
     ui->metaURL->setText(metaURL);
+    QString resourceURL = s->get("ResourceURL").toString();
+    ui->resourceURL->setText(resourceURL);
     QString flameKey = s->get("FlameKeyOverride").toString();
     ui->flameKey->setText(flameKey);
     QString modrinthToken = s->get("ModrinthToken").toString();
@@ -156,18 +159,31 @@ void APIPage::applySettings()
     QString msaClientID = ui->msaClientID->text();
     s->set("MSAClientIDOverride", msaClientID);
     QUrl metaURL(ui->metaURL->text());
+    QUrl resourceURL(ui->resourceURL->text());
     // Add required trailing slash
     if (!metaURL.isEmpty() && !metaURL.path().endsWith('/')) {
         QString path = metaURL.path();
         path.append('/');
         metaURL.setPath(path);
     }
+
+    if (!resourceURL.isEmpty() && !resourceURL.path().endsWith('/')) {
+        QString path = resourceURL.path();
+        path.append('/');
+        resourceURL.setPath(path);
+    }
     // Don't allow HTTP, since meta is basically RCE with all the jar files.
     if (!metaURL.isEmpty() && metaURL.scheme() == "http") {
         metaURL.setScheme("https");
     }
 
+    // Also don't allow HTTP
+    if (!resourceURL.isEmpty() && resourceURL.scheme() == "http") {
+        resourceURL.setScheme("https");
+    }
+
     s->set("MetaURLOverride", metaURL.toString());
+    s->set("ResourceURL", resourceURL.toString());
     QString flameKey = ui->flameKey->text();
     s->set("FlameKeyOverride", flameKey);
     QString modrinthToken = ui->modrinthToken->text();

launcher/ui/pages/global/APIPage.ui

@@ -129,6 +129,38 @@
          </layout>
         </widget>
        </item>
+       <item>
+        <widget class="QGroupBox" name="groupBox_assets">
+         <property name="title">
+          <string>Assets Server</string>
+         </property>
+         <layout class="QVBoxLayout" name="verticalLayout_6">
+          <item>
+           <widget class="QLabel" name="label_7">
+            <property name="text">
+             <string>You can set this to another server if you have problems with downloading assets.</string>
+            </property>
+            <property name="textFormat">
+             <enum>Qt::RichText</enum>
+            </property>
+            <property name="wordWrap">
+             <bool>true</bool>
+            </property>
+            <property name="openExternalLinks">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QLineEdit" name="resourceURL">
+            <property name="placeholderText">
+             <string>Use Default</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
        <item>
         <widget class="QGroupBox" name="groupBox_ua">
          <property name="minimumSize">