Browser: Propagate autoplay settings to the WebContent process

Userland/Applications/Browser/Browser.h

@@ -7,6 +7,7 @@
 #pragma once
 
 #include <AK/DeprecatedString.h>
+#include <AK/String.h>
 #include <Applications/Browser/IconBag.h>
 
 namespace Browser {
@@ -15,9 +16,11 @@ extern DeprecatedString g_home_url;
 extern DeprecatedString g_new_tab_url;
 extern DeprecatedString g_search_engine;
 extern Vector<DeprecatedString> g_content_filters;
+extern bool g_content_filters_enabled;
+extern Vector<String> g_autoplay_allowlist;
+extern bool g_autoplay_allowed_on_all_websites;
 extern Vector<DeprecatedString> g_proxies;
 extern HashMap<DeprecatedString, size_t> g_proxy_mappings;
-extern bool g_content_filters_enabled;
 extern IconBag g_icon_bag;
 extern DeprecatedString g_webdriver_content_ipc_path;
 

Userland/Applications/Browser/BrowserWindow.cpp

@@ -683,6 +683,14 @@ void BrowserWindow::content_filters_changed()
     });
 }
 
+void BrowserWindow::autoplay_allowlist_changed()
+{
+    tab_widget().for_each_child_of_type<Browser::Tab>([](auto& tab) {
+        tab.autoplay_allowlist_changed();
+        return IterationDecision::Continue;
+    });
+}
+
 void BrowserWindow::proxy_mappings_changed()
 {
     tab_widget().for_each_child_of_type<Browser::Tab>([](auto& tab) {
@@ -729,6 +737,9 @@ void BrowserWindow::config_bool_did_change(DeprecatedString const& domain, Depre
     } else if (key == "EnableContentFilters") {
         Browser::g_content_filters_enabled = value;
         content_filters_changed();
+    } else if (key == "AllowAutoplayOnAllWebsites") {
+        Browser::g_autoplay_allowed_on_all_websites = value;
+        autoplay_allowlist_changed();
     }
 
     // NOTE: CloseDownloadWidgetOnFinish is read each time in DownloadWindow

Userland/Applications/Browser/BrowserWindow.h

@@ -45,6 +45,7 @@ public:
     GUI::Action& take_full_screenshot_action() { return *m_take_full_screenshot_action; }
 
     void content_filters_changed();
+    void autoplay_allowlist_changed();
     void proxy_mappings_changed();
 
     void broadcast_window_position(Gfx::IntPoint);

Userland/Applications/Browser/Tab.cpp

@@ -131,6 +131,8 @@ Tab::Tab(BrowserWindow& window)
     else
         m_web_content_view->set_content_filters({});
 
+    autoplay_allowlist_changed();
+
     m_web_content_view->set_proxy_mappings(g_proxies, g_proxy_mappings);
     if (!g_webdriver_content_ipc_path.is_empty())
         enable_webdriver_mode();
@@ -661,6 +663,14 @@ void Tab::content_filters_changed()
         m_web_content_view->set_content_filters({});
 }
 
+void Tab::autoplay_allowlist_changed()
+{
+    if (g_autoplay_allowed_on_all_websites)
+        m_web_content_view->set_autoplay_allowed_on_all_websites();
+    else
+        m_web_content_view->set_autoplay_allowlist(g_autoplay_allowlist);
+}
+
 void Tab::proxy_mappings_changed()
 {
     m_web_content_view->set_proxy_mappings(g_proxies, g_proxy_mappings);

Userland/Applications/Browser/Tab.h

@@ -52,6 +52,7 @@ public:
     void did_become_active();
     void context_menu_requested(Gfx::IntPoint screen_position);
     void content_filters_changed();
+    void autoplay_allowlist_changed();
     void proxy_mappings_changed();
 
     void action_entered(GUI::Action&);

Userland/Applications/Browser/main.cpp

@@ -36,6 +36,8 @@ DeprecatedString g_home_url;
 DeprecatedString g_new_tab_url;
 Vector<DeprecatedString> g_content_filters;
 bool g_content_filters_enabled { true };
+Vector<String> g_autoplay_allowlist;
+bool g_autoplay_allowed_on_all_websites { false };
 Vector<DeprecatedString> g_proxies;
 HashMap<DeprecatedString, size_t> g_proxy_mappings;
 IconBag g_icon_bag;
@@ -57,6 +59,26 @@ static ErrorOr<void> load_content_filters()
     return {};
 }
 
+static ErrorOr<void> load_autoplay_allowlist()
+{
+    auto file = TRY(Core::File::open(TRY(String::formatted("{}/BrowserAutoplayAllowlist.txt", Core::StandardPaths::config_directory())), Core::File::OpenMode::Read));
+    auto allowlist = TRY(Core::BufferedFile::create(move(file)));
+    auto buffer = TRY(ByteBuffer::create_uninitialized(4096));
+
+    Browser::g_autoplay_allowlist.clear_with_capacity();
+
+    while (TRY(allowlist->can_read_line())) {
+        auto line = TRY(allowlist->read_line(buffer));
+        if (line.is_empty())
+            continue;
+
+        auto domain = TRY(String::from_utf8(line));
+        TRY(Browser::g_autoplay_allowlist.try_append(move(domain)));
+    }
+
+    return {};
+}
+
 ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
     if (getuid() == 0) {
@@ -110,11 +132,13 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     Browser::g_new_tab_url = Config::read_string("Browser"sv, "Preferences"sv, "NewTab"sv, "file:///res/html/misc/new-tab.html"sv);
     Browser::g_search_engine = Config::read_string("Browser"sv, "Preferences"sv, "SearchEngine"sv, {});
     Browser::g_content_filters_enabled = Config::read_bool("Browser"sv, "Preferences"sv, "EnableContentFilters"sv, true);
+    Browser::g_autoplay_allowed_on_all_websites = Config::read_bool("Browser"sv, "Preferences"sv, "AllowAutoplayOnAllWebsites"sv, false);
 
     Browser::g_icon_bag = TRY(Browser::IconBag::try_create());
 
     auto database = TRY(Browser::Database::create());
     TRY(load_content_filters());
+    TRY(load_autoplay_allowlist());
 
     for (auto& group : Config::list_groups("Browser"sv)) {
         if (!group.starts_with("Proxy:"sv))
@@ -156,6 +180,17 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     };
     TRY(content_filters_watcher->add_watch(DeprecatedString::formatted("{}/BrowserContentFilters.txt", Core::StandardPaths::config_directory()), Core::FileWatcherEvent::Type::ContentModified));
 
+    auto autoplay_allowlist_watcher = TRY(Core::FileWatcher::create());
+    autoplay_allowlist_watcher->on_change = [&](Core::FileWatcherEvent const&) {
+        dbgln("Reloading autoplay allowlist because config file changed");
+        if (auto error = load_autoplay_allowlist(); error.is_error()) {
+            dbgln("Reloading autoplay allowlist failed: {}", error.release_error());
+            return;
+        }
+        window->autoplay_allowlist_changed();
+    };
+    TRY(autoplay_allowlist_watcher->add_watch(DeprecatedString::formatted("{}/BrowserAutoplayAllowlist.txt", Core::StandardPaths::config_directory()), Core::FileWatcherEvent::Type::ContentModified));
+
     app->on_action_enter = [&](GUI::Action& action) {
         if (auto* browser_window = dynamic_cast<Browser::BrowserWindow*>(app->active_window())) {
             auto* tab = static_cast<Browser::Tab*>(browser_window->tab_widget().active_widget());