WebContent: Start work on browser process separation :^)

The "WebContent" service provides a very restricted instance of LibWeb
running as an unprivileged user account. This will be used to implement
process separation in Browser, among other things.

This first cut of the service only spawns a single WebContent process
when someone connects to /tmp/portal/webcontent. We will soon switch
this over to spawning a new process for each connection.

Since this feature is very immature, we'll be bringing it up inside of
Demos/WebView as a separate demo program. Eventually this will become
a reusable widget that anyone can embed and easily get out-of-process
web content in their GUI.

This is pretty, pretty cool! :^)

Base/etc/SystemServer.ini

@@ -7,6 +7,13 @@ KeepAlive=1
 User=protocol
 BootModes=text,graphical
 
+[WebContent]
+Socket=/tmp/portal/webcontent
+SocketPermissions=660
+Lazy=1
+User=webcontent
+BootModes=graphical
+
 [LookupServer]
 Socket=/tmp/portal/lookup
 SocketPermissions=660

Base/etc/group

@@ -4,8 +4,9 @@ tty:x:2:
 phys:x:3:window,anon
 audio:x:4:anon
 lookup:x:10:protocol,anon
-protocol:x:11:anon
+protocol:x:11:webcontent,anon
 notify:x:12:anon
 window:x:13:anon,notify
 clipboard:x:14:anon,notify
+webcontent:x:15:anon
 users:x:100:anon

Base/etc/passwd

@@ -4,5 +4,6 @@ protocol:x:11:11:ProtocolServer,,,:/:/bin/false
 notify:x:12:12:NotificationServer,,,:/:/bin/false
 window:x:13:13:WindowServer,,,:/:/bin/false
 clipboard:x:14:14:Clipboard,,,:/:/bin/false
+webcontent:x:15:15:WebContent,,,:/:/bin/false
 anon:x:100:100:Anonymous,,,:/home/anon:/bin/sh
 nona:x:200:200:Nona,,,:/home/nona:/bin/sh

Demos/CMakeLists.txt

@@ -6,4 +6,5 @@ add_subdirectory(HelloWorld)
 add_subdirectory(LibGfxDemo)
 add_subdirectory(Mouse)
 add_subdirectory(Screensaver)
+add_subdirectory(WebView)
 add_subdirectory(WidgetGallery)

Demos/WebView/CMakeLists.txt

@@ -0,0 +1,13 @@
+set(SOURCES
+    main.cpp
+    WebContentView.cpp
+    WebContentClient.cpp
+)
+
+set(GENERATED_SOURCES
+    ../../Services/WebContent/WebContentClientEndpoint.h
+    ../../Services/WebContent/WebContentServerEndpoint.h
+)
+
+serenity_bin(WebView)
+target_link_libraries(WebView LibGUI)

Demos/WebView/WebContentClient.cpp

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "WebContentClient.h"
+#include "WebContentView.h"
+#include <AK/SharedBuffer.h>
+
+WebContentClient::WebContentClient(WebContentView& view)
+    : IPC::ServerConnection<WebContentClientEndpoint, WebContentServerEndpoint>(*this, "/tmp/portal/webcontent")
+    , m_view(view)
+{
+    handshake();
+}
+
+void WebContentClient::handshake()
+{
+    auto response = send_sync<Messages::WebContentServer::Greet>();
+    set_my_client_id(response->client_id());
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidPaint& message)
+{
+    dbg() << "handle: WebContentClient::DidPaint! content_rect=" << message.content_rect() << ", shbuf_id=" << message.shbuf_id();
+    m_view.notify_server_did_paint({}, message.shbuf_id());
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidFinishLoad& message)
+{
+    dbg() << "handle: WebContentClient::DidFinishLoad! url=" << message.url();
+}

Demos/WebView/WebContentClient.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/HashMap.h>
+#include <LibIPC/ServerConnection.h>
+#include <WebContent/WebContentClientEndpoint.h>
+#include <WebContent/WebContentServerEndpoint.h>
+
+class WebContentView;
+
+class WebContentClient
+    : public IPC::ServerConnection<WebContentClientEndpoint, WebContentServerEndpoint>
+    , public WebContentClientEndpoint {
+    C_OBJECT(WebContentClient);
+
+public:
+    virtual void handshake() override;
+
+private:
+    WebContentClient(WebContentView&);
+
+    virtual void handle(const Messages::WebContentClient::DidPaint&) override;
+    virtual void handle(const Messages::WebContentClient::DidFinishLoad&) override;
+
+    WebContentView& m_view;
+};

Demos/WebView/WebContentView.cpp

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "WebContentView.h"
+#include "WebContentClient.h"
+#include <AK/SharedBuffer.h>
+#include <LibGUI/Painter.h>
+#include <LibGfx/SystemTheme.h>
+
+WebContentView::WebContentView()
+{
+    m_client = WebContentClient::construct(*this);
+    client().post_message(Messages::WebContentServer::UpdateSystemTheme(Gfx::current_system_theme_buffer_id()));
+}
+
+WebContentView::~WebContentView()
+{
+}
+
+void WebContentView::load(const URL& url)
+{
+    client().post_message(Messages::WebContentServer::LoadURL(url));
+}
+
+void WebContentView::paint_event(GUI::PaintEvent& event)
+{
+    GUI::Painter painter(*this);
+    painter.add_clip_rect(event.rect());
+    ASSERT(m_bitmap);
+    painter.blit({ 0, 0 }, *m_bitmap, m_bitmap->rect());
+}
+
+void WebContentView::resize_event(GUI::ResizeEvent& event)
+{
+    GUI::Widget::resize_event(event);
+    auto bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, event.size());
+    m_bitmap = bitmap->to_bitmap_backed_by_shared_buffer();
+    m_bitmap->shared_buffer()->share_with(client().server_pid());
+    client().post_message(Messages::WebContentServer::SetViewportRect(Gfx::IntRect({ 0, 0 }, event.size())));
+    client().post_message(Messages::WebContentServer::Paint(m_bitmap->rect(), m_bitmap->shbuf_id()));
+}
+
+void WebContentView::notify_server_did_paint(Badge<WebContentClient>, i32 shbuf_id)
+{
+    if (m_bitmap->shbuf_id() == shbuf_id)
+        update();
+}
+
+WebContentClient& WebContentView::client()
+{
+    return *m_client;
+}

Demos/WebView/WebContentView.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <LibGUI/Widget.h>
+
+class WebContentClient;
+
+class WebContentView final : public GUI::Widget {
+    C_OBJECT(WebContentView);
+
+public:
+    virtual ~WebContentView() override;
+
+    void load(const URL&);
+
+    void notify_server_did_paint(Badge<WebContentClient>, i32 shbuf_id);
+
+private:
+    WebContentView();
+
+    virtual void paint_event(GUI::PaintEvent&) override;
+    virtual void resize_event(GUI::ResizeEvent&) override;
+
+    WebContentClient& client();
+
+    RefPtr<WebContentClient> m_client;
+    RefPtr<Gfx::Bitmap> m_bitmap;
+};

Demos/WebView/main.cpp

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "WebContentView.h"
+#include <AK/URL.h>
+#include <LibGUI/Application.h>
+#include <LibGUI/Widget.h>
+#include <LibGUI/Window.h>
+
+int main(int argc, char** argv)
+{
+    GUI::Application app(argc, argv);
+    auto window = GUI::Window::construct();
+    auto& view = window->set_main_widget<WebContentView>();
+    window->set_title("WebContentView");
+    window->set_rect(100, 100, 640, 480);
+    window->show();
+
+    view.load("file:///res/html/misc/welcome.html");
+
+    return app.exec();
+}

Meta/build-root-filesystem.sh

@@ -163,6 +163,7 @@ ln -s ProfileViewer mnt/bin/pv
 ln -s WebServer mnt/bin/ws
 ln -s KeyboardSettings mnt/bin/keymap
 ln -s Solitaire mnt/bin/sl
+ln -s WebView mnt/bin/wv
 echo "done"
 
 # Run local sync script, if it exists

Services/CMakeLists.txt

@@ -9,5 +9,6 @@ add_subdirectory(SystemMenu)
 add_subdirectory(SystemServer)
 add_subdirectory(Taskbar)
 add_subdirectory(TelnetServer)
+add_subdirectory(WebContent)
 add_subdirectory(WebServer)
 add_subdirectory(WindowServer)

Services/WebContent/CMakeLists.txt

@@ -0,0 +1,13 @@
+compile_ipc(WebContentServer.ipc WebContentServerEndpoint.h)
+compile_ipc(WebContentClient.ipc WebContentClientEndpoint.h)
+
+set(SOURCES
+    ClientConnection.cpp
+    main.cpp
+    PageHost.cpp
+    WebContentServerEndpoint.h
+    WebContentClientEndpoint.h
+)
+
+serenity_bin(WebContent)
+target_link_libraries(WebContent LibCore LibIPC LibGfx LibWeb)

Services/WebContent/ClientConnection.cpp

@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <AK/Badge.h>
+#include <AK/SharedBuffer.h>
+#include <LibGfx/Bitmap.h>
+#include <LibGfx/SystemTheme.h>
+#include <WebContent/ClientConnection.h>
+#include <WebContent/PageHost.h>
+#include <WebContent/WebContentClientEndpoint.h>
+
+namespace WebContent {
+
+static HashMap<int, RefPtr<ClientConnection>> s_connections;
+
+ClientConnection::ClientConnection(Core::LocalSocket& socket, int client_id)
+    : IPC::ClientConnection<WebContentServerEndpoint>(*this, socket, client_id)
+    , m_page_host(PageHost::create())
+{
+    s_connections.set(client_id, *this);
+}
+
+ClientConnection::~ClientConnection()
+{
+}
+
+void ClientConnection::die()
+{
+    s_connections.remove(client_id());
+}
+
+Web::Page& ClientConnection::page()
+{
+    return m_page_host->page();
+}
+
+const Web::Page& ClientConnection::page() const
+{
+    return m_page_host->page();
+}
+
+OwnPtr<Messages::WebContentServer::GreetResponse> ClientConnection::handle(const Messages::WebContentServer::Greet&)
+{
+    return make<Messages::WebContentServer::GreetResponse>(client_id());
+}
+
+void ClientConnection::handle(const Messages::WebContentServer::UpdateSystemTheme& message)
+{
+    auto shared_buffer = SharedBuffer::create_from_shbuf_id(message.shbuf_id());
+    if (!shared_buffer) {
+        dbg() << "WebContentServer::UpdateSystemTheme: SharedBuffer already gone! Ignoring :^)";
+        return;
+    }
+    Gfx::set_system_theme(*shared_buffer);
+    auto impl = Gfx::PaletteImpl::create_with_shared_buffer(*shared_buffer);
+    m_page_host->set_palette_impl(*impl);
+}
+
+void ClientConnection::handle(const Messages::WebContentServer::LoadURL& message)
+{
+    dbg() << "handle: WebContentServer::LoadURL: url=" << message.url();
+    page().load(message.url());
+}
+
+void ClientConnection::handle(const Messages::WebContentServer::SetViewportRect& message)
+{
+    dbg() << "handle: WebContentServer::SetViewportRect: rect=" << message.rect();
+    m_page_host->set_viewport_rect(message.rect());
+}
+
+void ClientConnection::handle(const Messages::WebContentServer::Paint& message)
+{
+    dbg() << "handle: WebContentServer::Paint: content_rect=" << message.content_rect() << ", shbuf_id=" << message.shbuf_id();
+
+    auto shared_buffer = SharedBuffer::create_from_shbuf_id(message.shbuf_id());
+    if (!shared_buffer) {
+        dbg() << "WebContentServer::Paint: SharedBuffer already gone! Ignoring :^)";
+        return;
+    }
+    auto shared_bitmap = Gfx::Bitmap::create_with_shared_buffer(Gfx::BitmapFormat::RGB32, shared_buffer.release_nonnull(), message.content_rect().size());
+    if (!shared_bitmap) {
+        did_misbehave("WebContentServer::Paint: Cannot create Gfx::Bitmap wrapper around SharedBuffer");
+        return;
+    }
+    m_page_host->paint(message.content_rect(), *shared_bitmap);
+    post_message(Messages::WebContentClient::DidPaint(message.content_rect(), message.shbuf_id()));
+}
+
+void ClientConnection::handle(const Messages::WebContentServer::MouseDown& message)
+{
+    page().handle_mousedown(message.position(), message.button(), message.modifiers());
+}
+
+void ClientConnection::handle(const Messages::WebContentServer::MouseMove& message)
+{
+    page().handle_mousemove(message.position(), message.buttons(), message.modifiers());
+}
+
+void ClientConnection::handle(const Messages::WebContentServer::MouseUp& message)
+{
+    page().handle_mouseup(message.position(), message.button(), message.modifiers());
+}
+
+}

Services/WebContent/ClientConnection.h

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/HashMap.h>
+#include <LibIPC/ClientConnection.h>
+#include <LibWeb/Forward.h>
+#include <WebContent/Forward.h>
+#include <WebContent/WebContentServerEndpoint.h>
+
+namespace WebContent {
+
+class ClientConnection final
+    : public IPC::ClientConnection<WebContentServerEndpoint>
+    , public WebContentServerEndpoint {
+    C_OBJECT(ClientConnection);
+
+public:
+    explicit ClientConnection(Core::LocalSocket&, int client_id);
+    ~ClientConnection() override;
+
+    virtual void die() override;
+
+private:
+    Web::Page& page();
+    const Web::Page& page() const;
+
+    virtual OwnPtr<Messages::WebContentServer::GreetResponse> handle(const Messages::WebContentServer::Greet&) override;
+    virtual void handle(const Messages::WebContentServer::UpdateSystemTheme&) override;
+    virtual void handle(const Messages::WebContentServer::LoadURL&) override;
+    virtual void handle(const Messages::WebContentServer::Paint&) override;
+    virtual void handle(const Messages::WebContentServer::SetViewportRect&) override;
+    virtual void handle(const Messages::WebContentServer::MouseDown&) override;
+    virtual void handle(const Messages::WebContentServer::MouseMove&) override;
+    virtual void handle(const Messages::WebContentServer::MouseUp&) override;
+
+    NonnullOwnPtr<PageHost> m_page_host;
+};
+
+}

Services/WebContent/Forward.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+namespace WebContent {
+
+class ClientConnection;
+class PageHost;
+
+}

Services/WebContent/PageHost.cpp

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "PageHost.h"
+#include <AK/SharedBuffer.h>
+#include <LibGfx/Painter.h>
+#include <LibGfx/SystemTheme.h>
+#include <LibWeb/Frame/Frame.h>
+#include <LibWeb/Layout/LayoutDocument.h>
+
+namespace WebContent {
+
+PageHost::PageHost()
+    : m_page(make<Web::Page>(*this))
+{
+    setup_palette();
+}
+
+PageHost::~PageHost()
+{
+}
+
+void PageHost::setup_palette()
+{
+    // FIXME: Get the proper palette from our peer somehow
+    auto buffer = SharedBuffer::create_with_size(sizeof(Gfx::SystemTheme));
+    auto* theme = (Gfx::SystemTheme*)buffer->data();
+    theme->color[(int)Gfx::ColorRole::Window] = Color::Magenta;
+    theme->color[(int)Gfx::ColorRole::WindowText] = Color::Cyan;
+    m_palette_impl = Gfx::PaletteImpl::create_with_shared_buffer(*buffer);
+}
+
+Gfx::Palette PageHost::palette() const
+{
+    return Gfx::Palette(*m_palette_impl);
+}
+
+void PageHost::set_palette_impl(const Gfx::PaletteImpl& impl)
+{
+    m_palette_impl = impl;
+}
+
+void PageHost::paint(const Gfx::IntRect& content_rect, Gfx::Bitmap& target)
+{
+    Gfx::Painter painter(target);
+
+    auto* document = page().main_frame().document();
+    if (!document)
+        return;
+
+    auto* layout_root = document->layout_node();
+    if (!layout_root) {
+        painter.fill_rect(content_rect, Color::White);
+        return;
+    }
+
+    painter.fill_rect(content_rect, document->background_color(palette()));
+
+    if (auto background_bitmap = document->background_image()) {
+        painter.draw_tiled_bitmap(content_rect, *background_bitmap);
+    }
+
+    Web::RenderingContext context(painter, palette(), Gfx::IntPoint());
+    context.set_viewport_rect(content_rect);
+    layout_root->render(context);
+}
+
+void PageHost::set_viewport_rect(const Gfx::IntRect& rect)
+{
+    page().main_frame().set_size(rect.size());
+    if (page().main_frame().document())
+        page().main_frame().document()->layout();
+    page().main_frame().set_viewport_rect(rect);
+}
+
+}

Services/WebContent/PageHost.h

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <LibWeb/Page.h>
+
+namespace WebContent {
+
+class PageHost : public Web::PageClient {
+    AK_MAKE_NONCOPYABLE(PageHost);
+    AK_MAKE_NONMOVABLE(PageHost);
+
+public:
+    static NonnullOwnPtr<PageHost> create() { return adopt_own(*new PageHost); }
+    virtual ~PageHost();
+
+    Web::Page& page() { return *m_page; }
+    const Web::Page& page() const { return *m_page; }
+
+    void paint(const Gfx::IntRect& content_rect, Gfx::Bitmap&);
+
+    void set_palette_impl(const Gfx::PaletteImpl&);
+    void set_viewport_rect(const Gfx::IntRect&);
+
+private:
+    PageHost();
+
+    Gfx::Palette palette() const;
+    void setup_palette();
+
+    NonnullOwnPtr<Web::Page> m_page;
+    RefPtr<Gfx::PaletteImpl> m_palette_impl;
+};
+
+}

Services/WebContent/WebContentClient.ipc

@@ -0,0 +1,6 @@
+endpoint WebContentClient = 90
+{
+    DidFinishLoad(URL url) =|
+
+    DidPaint(Gfx::IntRect content_rect, i32 shbuf_id) =|
+}

Services/WebContent/WebContentServer.ipc

@@ -0,0 +1,15 @@
+endpoint WebContentServer = 89
+{
+    Greet() => (i32 client_id)
+
+    UpdateSystemTheme(i32 shbuf_id) =|
+
+    LoadURL(URL url) =|
+
+    Paint(Gfx::IntRect content_rect, i32 shbuf_id) =|
+    SetViewportRect(Gfx::IntRect rect) =|
+
+    MouseDown(Gfx::IntPoint position, unsigned button, unsigned buttons, unsigned modifiers) =|
+    MouseMove(Gfx::IntPoint position, unsigned button, unsigned buttons, unsigned modifiers) =|
+    MouseUp(Gfx::IntPoint position, unsigned button, unsigned buttons, unsigned modifiers) =|
+}

Services/WebContent/main.cpp

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <LibCore/EventLoop.h>
+#include <LibCore/LocalServer.h>
+#include <LibIPC/ClientConnection.h>
+#include <WebContent/ClientConnection.h>
+
+int main(int, char**)
+{
+    Core::EventLoop event_loop;
+    if (pledge("stdio shared_buffer accept unix rpath", nullptr) < 0) {
+        perror("pledge");
+        return 1;
+    }
+    if (unveil("/res", "r") < 0) {
+        perror("unveil");
+        return 1;
+    }
+    if (unveil("/tmp/portal/protocol", "rw") < 0) {
+        perror("unveil");
+        return 1;
+    }
+    if (unveil(nullptr, nullptr) < 0) {
+        perror("unveil");
+        return 1;
+    }
+
+    auto server = Core::LocalServer::construct();
+    bool ok = server->take_over_from_system_server();
+    ASSERT(ok);
+    server->on_ready_to_accept = [&] {
+        auto client_socket = server->accept();
+        if (!client_socket) {
+            dbg() << "WebContent: accept failed.";
+            return;
+        }
+        static int s_next_client_id = 0;
+        int client_id = ++s_next_client_id;
+        IPC::new_client_connection<WebContent::ClientConnection>(*client_socket, client_id);
+    };
+    return event_loop.exec();
+}