Merge pull request #52 from CeRiAl/macosx-sparkle

MACOSX: Add Sparkle support

15 files changed, 510 insertions, 2 deletions

diff --git a/backends/module.mk b/backends/module.mk
index 63774cc4d0..d8b423a67a 100644
--- a/backends/module.mk
+++ b/backends/module.mk
@@ -15,7 +15,8 @@ MODULE_OBJS := \
 	midi/timidity.o \
 	saves/savefile.o \
 	saves/default/default-saves.o \
-	timer/default/default-timer.o
+	timer/default/default-timer.o \
+	updates/sparkle-updates.o
 
 
 ifdef USE_ELF_LOADER
@@ -87,7 +88,8 @@ endif
 ifdef MACOSX
 MODULE_OBJS += \
 	midi/coreaudio.o \
-	midi/coremidi.o
+	midi/coremidi.o \
+	updates/macosx/macosx-updates.o
 endif
 
 ifdef WIN32
diff --git a/backends/platform/sdl/macosx/macosx.cpp b/backends/platform/sdl/macosx/macosx.cpp
index ddfc99570a..39fd4237ec 100644
--- a/backends/platform/sdl/macosx/macosx.cpp
+++ b/backends/platform/sdl/macosx/macosx.cpp
@@ -30,6 +30,7 @@
 #include "backends/platform/sdl/macosx/macosx.h"
 #include "backends/mixer/doublebuffersdl/doublebuffersdl-mixer.h"
 #include "backends/platform/sdl/macosx/appmenu_osx.h"
+#include "backends/updates/macosx/macosx-updates.h"
 
 #include "common/archive.h"
 #include "common/config-manager.h"
@@ -63,6 +64,11 @@ void OSystem_MacOSX::initBackend() {
 	// Replace the SDL generated menu items with our own translated ones on Mac OS X
 	replaceApplicationMenuItems();
 
+#if defined(USE_SPARKLE)
+	// Initialize updates manager
+	_updateManager = new MacOSXUpdateManager();
+#endif
+
 	// Invoke parent implementation of this method
 	OSystem_POSIX::initBackend();
 }
diff --git a/backends/updates/macosx/macosx-updates.h b/backends/updates/macosx/macosx-updates.h
new file mode 100644
index 0000000000..1fe0e4bb75
--- /dev/null
+++ b/backends/updates/macosx/macosx-updates.h
@@ -0,0 +1,46 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_UPDATES_MACOSX_H
+#define BACKENDS_UPDATES_MACOSX_H
+
+#include "backends/updates/sparkle-updates.h"
+
+#if defined(MACOSX) && defined(USE_SPARKLE)
+
+class MacOSXUpdateManager : public SparkleUpdateManager {
+public:
+	MacOSXUpdateManager();
+	virtual ~MacOSXUpdateManager();
+
+	virtual void checkForUpdates();
+
+	virtual void setAutomaticallyChecksForUpdates(UpdateState state);
+	virtual UpdateState getAutomaticallyChecksForUpdates();
+
+	virtual void setUpdateCheckInterval(UpdateInterval interval);
+	virtual UpdateInterval getUpdateCheckInterval();
+};
+
+#endif
+
+#endif // BACKENDS_UPDATES_MACOSX_H
diff --git a/backends/updates/macosx/macosx-updates.mm b/backends/updates/macosx/macosx-updates.mm
new file mode 100644
index 0000000000..f3675f9bd2
--- /dev/null
+++ b/backends/updates/macosx/macosx-updates.mm
@@ -0,0 +1,129 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "backends/updates/sparkle-updates.h"
+
+#if defined(MACOSX) && defined(USE_SPARKLE)
+
+#include "backends/updates/macosx/macosx-updates.h"
+#include "common/translation.h"
+
+#include <Cocoa/Cocoa.h>
+#include <Sparkle/Sparkle.h>
+
+SUUpdater *sparkleUpdater;
+
+/**
+ * Sparkle is a software update framework for Mac OS X which uses appcasts for
+ * release information. Appcasts are RSS-like XML feeds which contain information
+ * about the most current version at the time. If a new version is available, the
+ * user is presented the release-notes/changes/fixes and is asked if he wants to
+ * update, and if yes the Sparkle framework downloads a signed update package
+ * from the server and automatically installs and restarts the software.
+ * More detailed information is available at the following address:
+ * http://sparkle.andymatuschak.org/
+ *
+ */
+MacOSXUpdateManager::MacOSXUpdateManager() {
+	NSMenuItem *menuItem = [[NSApp mainMenu] itemAtIndex:0];
+	NSMenu *applicationMenu = [menuItem submenu];
+
+	// Init Sparkle
+	sparkleUpdater = [SUUpdater sharedUpdater];
+
+	// Set appcast URL
+	[sparkleUpdater setFeedURL:[NSURL URLWithString:[NSString stringWithCString:getAppcastUrl().c_str()]]];
+
+	// Get current encoding
+	NSStringEncoding stringEncoding = CFStringConvertEncodingToNSStringEncoding(CFStringConvertIANACharSetNameToEncoding((CFStringRef)[NSString stringWithCString:(TransMan.getCurrentCharset()).c_str() encoding:NSASCIIStringEncoding]));
+
+	// Add "Check for Updates..." menu item
+	NSMenuItem *updateMenuItem = [applicationMenu insertItemWithTitle:[NSString stringWithCString:_("Check for Updates...") encoding:stringEncoding] action:@selector(checkForUpdates:) keyEquivalent:@"" atIndex:1];
+
+	// Set the target of the new menu item
+	[updateMenuItem setTarget:sparkleUpdater];
+
+	// Finally give up our references to the objects
+	[menuItem release];
+
+	// Enable automatic update checking once a day (alternatively use
+	// checkForUpdates() here to check for updates on every startup)
+	// TODO: Should be removed when an update settings gui is implemented
+	setAutomaticallyChecksForUpdates(kUpdateStateEnabled);
+	setUpdateCheckInterval(kUpdateIntervalOneDay);
+}
+
+MacOSXUpdateManager::~MacOSXUpdateManager() {
+	[sparkleUpdater release];
+}
+
+void MacOSXUpdateManager::checkForUpdates() {
+	[sparkleUpdater checkForUpdatesInBackground];
+}
+
+void MacOSXUpdateManager::setAutomaticallyChecksForUpdates(UpdateManager::UpdateState state) {
+	if (state == kUpdateStateNotSupported)
+		return;
+
+	[sparkleUpdater setAutomaticallyChecksForUpdates:(state == kUpdateStateEnabled ? YES : NO)];
+}
+
+Common::UpdateManager::UpdateState MacOSXUpdateManager::getAutomaticallyChecksForUpdates() {
+	if ([sparkleUpdater automaticallyChecksForUpdates])
+		return kUpdateStateEnabled;
+	else
+		return kUpdateStateDisabled;
+}
+
+void MacOSXUpdateManager::setUpdateCheckInterval(UpdateInterval interval) {
+	if (interval == kUpdateIntervalNotSupported)
+		return;
+
+	[sparkleUpdater setUpdateCheckInterval:(NSTimeInterval)interval];
+}
+
+Common::UpdateManager::UpdateInterval MacOSXUpdateManager::getUpdateCheckInterval() {
+	// This is kind of a hack but necessary, as the value stored by Sparkle
+	// might have been changed outside of ScummVM (in which case we return the
+	// default interval of one day)
+	switch ((UpdateInterval)[sparkleUpdater updateCheckInterval]) {
+		default:
+			break;
+
+		case kUpdateIntervalOneDay:
+			return kUpdateIntervalOneDay;
+
+		case kUpdateIntervalOneWeek:
+			return kUpdateIntervalOneWeek;
+
+		case kUpdateIntervalOneMonth:
+			return kUpdateIntervalOneMonth;
+	}
+
+	// Return the default value (one day)
+	return kUpdateIntervalOneDay;
+}
+
+#endif
diff --git a/backends/updates/sparkle-updates.cpp b/backends/updates/sparkle-updates.cpp
new file mode 100644
index 0000000000..f146237a98
--- /dev/null
+++ b/backends/updates/sparkle-updates.cpp
@@ -0,0 +1,45 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/updates/sparkle-updates.h"
+
+#if defined(USE_SPARKLE)
+
+// TODO replace by proper URL
+#if defined(MACOSX)
+	#define APPCAST_BASE_URL "http://www.scummvm.org/appcasts/macosx/"
+#elif defined(WIN32)
+	#define APPCAST_BASE_URL "http://www.scummvm.org/appcasts/win32/"
+#else
+	#error "Please define APPCAST_BASE_URL for your platform!"
+#endif
+
+
+Common::String SparkleUpdateManager::getAppcastUrl() {
+#ifdef RELEASE_BUILD
+	return APPCAST_BASE_URL "release.xml";
+#else
+	return APPCAST_BASE_URL "beta.xml";
+#endif
+}
+
+#endif
diff --git a/backends/updates/sparkle-updates.h b/backends/updates/sparkle-updates.h
new file mode 100644
index 0000000000..26f170db2e
--- /dev/null
+++ b/backends/updates/sparkle-updates.h
@@ -0,0 +1,48 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_UPDATES_SPARKLE_UPDATE_H
+#define BACKENDS_UPDATES_SPARKLE_UPDATE_H
+
+#include "common/scummsys.h"
+#include "common/str.h"
+#include "common/updates.h"
+
+#if defined(USE_SPARKLE)
+
+class SparkleUpdateManager : public Common::UpdateManager {
+public:
+	/**
+	 * Gets the appcast url.
+	 *
+	 * Beta/RC versions and releases might have a different appcast url.
+	 * This function takes care of checking which version of ScummVM is running
+	 * and return the url to the proper appcast.
+	 *
+	 * @return the appcast url.
+	 */
+	Common::String getAppcastUrl();
+};
+
+#endif
+
+#endif // BACKENDS_UPDATES_SPARKLE_UPDATE_H
diff --git a/common/system.cpp b/common/system.cpp
index 8d5bfd39cd..59210544ab 100644
--- a/common/system.cpp
+++ b/common/system.cpp
@@ -28,6 +28,7 @@
 #include "common/savefile.h"
 #include "common/str.h"
 #include "common/taskbar.h"
+#include "common/updates.h"
 #include "common/textconsole.h"
 
 #include "backends/audiocd/default/default-audiocd.h"
@@ -44,6 +45,9 @@ OSystem::OSystem() {
 #if defined(USE_TASKBAR)
 	_taskbarManager = 0;
 #endif
+#if defined(USE_UPDATES)
+	_updateManager = 0;
+#endif
 	_fsFactory = 0;
 }
 
@@ -62,6 +66,11 @@ OSystem::~OSystem() {
 	_taskbarManager = 0;
 #endif
 
+#if defined(USE_UPDATES)
+	delete _updateManager;
+	_updateManager = 0;
+#endif
+
 	delete _savefileManager;
 	_savefileManager = 0;
 
diff --git a/common/system.h b/common/system.h
index 9b833c5b1a..600778d8e1 100644
--- a/common/system.h
+++ b/common/system.h
@@ -45,6 +45,9 @@ class String;
 #if defined(USE_TASKBAR)
 class TaskbarManager;
 #endif
+#if defined(USE_UPDATES)
+class UpdateManager;
+#endif
 class TimerManager;
 class SeekableReadStream;
 class WriteStream;
@@ -161,6 +164,15 @@ protected:
 	Common::TaskbarManager *_taskbarManager;
 #endif
 
+#if defined(USE_UPDATES)
+	/**
+	 * No default value is provided for _updateManager by OSystem.
+	 *
+	 * @note _updateManager is deleted by the OSystem destructor.
+	 */
+	Common::UpdateManager *_updateManager;
+#endif
+
 	/**
 	 * No default value is provided for _fsFactory by OSystem.
 	 *
@@ -1071,6 +1083,18 @@ public:
 	}
 #endif
 
+#if defined(USE_UPDATES)
+	/**
+	 * Returns the UpdateManager, used to handle auto-updating,
+	 * and updating of ScummVM in general.
+	 *
+	 * @return the UpdateManager for the current architecture
+	 */
+	virtual Common::UpdateManager *getUpdateManager() {
+		return _updateManager;
+	}
+#endif
+
 	/**
 	 * Returns the FilesystemFactory object, depending on the current architecture.
 	 *
diff --git a/common/updates.h b/common/updates.h
new file mode 100644
index 0000000000..1e0babdf6d
--- /dev/null
+++ b/common/updates.h
@@ -0,0 +1,102 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_UPDATES_ABSTRACT_H
+#define BACKENDS_UPDATES_ABSTRACT_H
+
+#if defined(USE_UPDATES)
+
+namespace Common {
+
+/**
+ * The UpdateManager allows configuring of the automatic update checking
+ * for systems that support it:
+ *  - using Sparkle on MacOSX
+ *  - using WinSparkle on Windows
+ *
+ * Most of the update checking is completely automated and this class only
+ * gives access to basic settings. It is mostly used by the GUI to set
+ * widgets state on the update page and for manually checking for updates
+ *
+ */
+class UpdateManager {
+public:
+	enum UpdateState {
+		kUpdateStateDisabled     = 0,
+		kUpdateStateEnabled      = 1,
+		kUpdateStateNotSupported = 2
+	};
+
+	enum UpdateInterval {
+		kUpdateIntervalNotSupported = 0,
+		kUpdateIntervalOneDay       = 86400,
+		kUpdateIntervalOneWeek      = 604800,
+		kUpdateIntervalOneMonth     = 2628000   // average seconds per month (60*60*24*365)/12
+	};
+
+	UpdateManager() {}
+	virtual ~UpdateManager() {}
+
+	/**
+	 * Checks manually if an update is available, showing progress UI to the user.
+	 *
+	 * By default, update checks are done silently on start.
+	 * This allows to manually start an update check.
+	 */
+	virtual void checkForUpdates() {}
+
+	/**
+	 * Sets the automatic update checking state
+	 *
+	 * @param  state    The state.
+	 */
+	virtual void setAutomaticallyChecksForUpdates(UpdateState state) {}
+
+	/**
+	 * Gets the automatic update checking state
+	 *
+	 * @return  kUpdateStateDisabled     if automatic update checking is disabled,
+	 *          kUpdateStateEnabled      if automatic update checking is enabled,
+	 *          kUpdateStateNotSupported if automatic update checking is not available
+	 */
+	virtual UpdateState getAutomaticallyChecksForUpdates() { return kUpdateStateNotSupported; }
+
+	/**
+	 * Sets the update checking interval.
+	 *
+	 * @param  interval    The interval.
+	 */
+	virtual void setUpdateCheckInterval(UpdateInterval interval) {}
+
+	/**
+	 * Gets the update check interval.
+	 *
+	 * @return  the update check interval.
+	 */
+	virtual UpdateInterval getUpdateCheckInterval() { return kUpdateIntervalNotSupported; }
+};
+
+}	// End of namespace Common
+
+#endif
+
+#endif // BACKENDS_UPDATES_ABSTRACT_H
diff --git a/configure b/configure
index d5e2345acb..8045a8b52b 100755
--- a/configure
+++ b/configure
@@ -135,6 +135,7 @@ _alsa=auto
 _seq_midi=auto
 _timidity=auto
 _zlib=auto
+_sparkle=auto
 _png=auto
 _theoradec=auto
 _faad=auto
@@ -143,6 +144,7 @@ _opengl=auto
 _opengles=auto
 _readline=auto
 _taskbar=yes
+_updates=yes
 _libunity=auto
 # Default option behaviour yes/no
 _debug_build=auto
@@ -773,6 +775,7 @@ Optional Features:
   --disable-hq-scalers     exclude HQ2x and HQ3x scalers
   --disable-translation    don't build support for translated messages
   --disable-taskbar        don't build support for taskbar and launcher integration
+  --disable-updates        don't build support for updates
   --enable-text-console    use text console instead of graphical console
   --enable-verbose-build   enable regular echoing of commands during build
                            process
@@ -814,6 +817,9 @@ Optional Libraries:
                            installed (optional)
   --disable-fluidsynth     disable fluidsynth MIDI driver [autodetect]
 
+  --with-sparkle-prefix=DIR   Prefix where sparkle is installed (MacOSX only - optional)
+  --disable-sparkle        disable sparkle automatic update support [MacOSX only - autodetect]
+
   --with-sdl-prefix=DIR    Prefix where the sdl-config script is
                            installed (optional)
 
@@ -862,6 +868,8 @@ for ac_option in $@; do
 	--disable-mad)            _mad=no         ;;
 	--enable-zlib)            _zlib=yes       ;;
 	--disable-zlib)           _zlib=no        ;;
+	--enable-sparkle)         _sparkle=yes    ;;
+	--disable-sparkle)        _sparkle=no     ;;
 	--enable-nasm)            _nasm=yes       ;;
 	--disable-nasm)           _nasm=no        ;;
 	--disable-png)            _png=no         ;;
@@ -875,6 +883,8 @@ for ac_option in $@; do
 	--disable-readline)       _readline=no    ;;
 	--enable-taskbar)         _taskbar=yes    ;;
 	--disable-taskbar)        _taskbar=no     ;;
+	--enable-updates)         _updates=yes    ;;
+	--disable-updates)        _updates=no     ;;
 	--enable-libunity)        _libunity=yes   ;;
 	--disable-libunity)       _libunity=no    ;;
 	--enable-opengl)          _opengl=yes     ;;
@@ -949,6 +959,11 @@ for ac_option in $@; do
 		ZLIB_CFLAGS="-I$arg/include"
 		ZLIB_LIBS="-L$arg/lib"
 		;;
+	--with-sparkle-prefix=*)
+		arg=`echo $ac_option | cut -d '=' -f 2`
+		SPARKLE_CFLAGS="-F$arg"
+		SPARKLE_LIBS="-F$arg"
+		;;
 	--with-readline-prefix=*)
 		arg=`echo $ac_option | cut -d '=' -f 2`
 		READLINE_CFLAGS="-I$arg/include"
@@ -2972,6 +2987,30 @@ if test `get_engine_build sword25` = yes && test ! "$_zlib" = yes ; then
 fi
 
 #
+# Check for Sparkle if updates support is enabled
+#
+echocheck "Sparkle"
+if test "$_updates" = no; then
+	_sparkle=no
+else
+if test "$_sparkle" = auto ; then
+	_sparkle=no
+	cat > $TMPC << EOF
+#include <Cocoa/Cocoa.h>
+#include <Sparkle/Sparkle.h>
+int main(void) { SUUpdater *updater = [SUUpdater sharedUpdater]; return 0; }
+EOF
+	cc_check $SPARKLE_CFLAGS $SPARKLE_LIBS -framework Sparkle -ObjC++ -lobjc && _sparkle=yes
+fi
+if test "$_sparkle" = yes ; then
+	LIBS="$LIBS $SPARKLE_LIBS -framework Sparkle"
+	INCLUDES="$INCLUDES $SPARKLE_CFLAGS"
+fi
+define_in_config_if_yes "$_sparkle" 'USE_SPARKLE'
+fi
+echo "$_sparkle"
+
+#
 # Check for libfluidsynth
 #
 echocheck "libfluidsynth"
@@ -3278,6 +3317,21 @@ define_in_config_if_yes $_bink 'USE_BINK'
 echo "$_bink"
 
 #
+# Check whether to build updates support
+#
+echo_n "Building updates support... "
+define_in_config_if_yes $_updates 'USE_UPDATES'
+if test "$_updates" = yes; then
+	if test "$_sparkle" = yes; then
+		echo "Sparkle"
+	else
+		echo "$_updates"
+	fi
+else
+	echo "$_updates"
+fi
+
+#
 # Figure out installation directories
 #
 test "x$prefix" = xNONE && prefix=/usr/local
diff --git a/dists/macosx/Info.plist b/dists/macosx/Info.plist
index 20081ccc80..2e9067516c 100644
--- a/dists/macosx/Info.plist
+++ b/dists/macosx/Info.plist
@@ -28,5 +28,9 @@
 	<string>NSApplication</string>
 	<key>NSHumanReadableCopyright</key>
 	<string>Copyright 2001-2011 The ScummVM team</string>
+	<key>SUFeedURL</key>
+	<string>http://www.scummvm.org/appcasts/macosx/release.xml</string>
+	<key>SUPublicDSAKeyFile</key>
+	<string>dsa_pub.pem</string>
 </dict>
 </plist>
diff --git a/dists/macosx/Info.plist.in b/dists/macosx/Info.plist.in
index 3ba5a080f0..4a01690d73 100644
--- a/dists/macosx/Info.plist.in
+++ b/dists/macosx/Info.plist.in
@@ -28,5 +28,9 @@
 	<string>NSApplication</string>
 	<key>NSHumanReadableCopyright</key>
 	<string>Copyright 2001-2011 The ScummVM team</string>
+	<key>SUFeedURL</key>
+	<string>http://www.scummvm.org/appcasts/macosx/release.xml</string>
+	<key>SUPublicDSAKeyFile</key>
+	<string>dsa_pub.pem</string>
 </dict>
 </plist>
diff --git a/dists/macosx/scummvm_osx_appcast.xml b/dists/macosx/scummvm_osx_appcast.xml
new file mode 100755
index 0000000000..455b062b6b
--- /dev/null
+++ b/dists/macosx/scummvm_osx_appcast.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<rss version="2.0" xmlns:sparkle="http://www.andymatuschak.org/xml-namespaces/sparkle"  xmlns:dc="http://purl.org/dc/elements/1.1/">
+	<channel>
+		<title>ScummVM Changelog</title>
+		<link>http://scummvm.org/scummvm_appcast.xml</link>
+		<description>Most recent changes with links to updates.</description>
+		<language>en</language>
+		<item>
+			<title>Version 1.2.1 (3 bugs fixed; 2 new features)</title>
+			<sparkle:releaseNotesLink>
+				http://sourceforge.net/projects/scummvm/files/scummvm/1.2.1/ReleaseNotes/view
+			</sparkle:releaseNotesLink>
+			<pubDate>Sun, 19 Dec 2010 12:20:11 +0000</pubDate>
+			<enclosure url="http://scummvm.org/ScummVM 1.2.1-Test.zip" sparkle:version="1.2.1" length="1472893" type="application/octet-stream" sparkle:dsaSignature="234818feCa1JyW30nbkBwainOzrN6EQuAh" />
+		</item>
+		<item>
+			<title>Version 1.2.0</title>
+			<sparkle:releaseNotesLink>
+				http://sourceforge.net/projects/scummvm/files/scummvm/1.2.0/ReleaseNotes/view
+			</sparkle:releaseNotesLink>
+			<pubDate>Fri, 15 Oct 2010 12:20:11 +0000</pubDate>
+			<enclosure url="http://scummvm.org/ScummVM 1.2.0-Test.zip" sparkle:version="1.2.0" length="1472893" type="application/octet-stream" sparkle:dsaSignature="234818feCa1JyW30nbkBwainOzrN6EQuAh" />
+		</item>
+	</channel>
+</rss>
diff --git a/po/POTFILES b/po/POTFILES
index 26bbf52d8f..b556817015 100644
--- a/po/POTFILES
+++ b/po/POTFILES
@@ -78,3 +78,4 @@ backends/platform/wince/wince-sdl.cpp
 backends/events/default/default-events.cpp
 backends/events/gph/gph-events.cpp
 backends/events/openpandora/op-events.cpp
+backends/updates/macosx/macosx-updates.mm
diff --git a/ports.mk b/ports.mk
index c537173fc0..3d153bab8d 100644
--- a/ports.mk
+++ b/ports.mk
@@ -39,6 +39,11 @@ bundle: scummvm-static
 	mkdir -p $(bundle_name)/Contents/Resources
 	echo "APPL????" > $(bundle_name)/Contents/PkgInfo
 	cp $(srcdir)/dists/macosx/Info.plist $(bundle_name)/Contents/
+ifdef USE_SPARKLE
+	mkdir -p $(bundle_name)/Contents/Frameworks
+	cp $(srcdir)/dists/macosx/dsa_pub.pem $(bundle_name)/Contents/Resources/
+	cp -R $(STATICLIBPATH)/Sparkle.framework $(bundle_name)/Contents/Frameworks/
+endif
 	cp $(srcdir)/icons/scummvm.icns $(bundle_name)/Contents/Resources/
 	cp $(DIST_FILES_DOCS) $(bundle_name)/
 	cp $(DIST_FILES_THEMES) $(bundle_name)/Contents/Resources/
@@ -108,6 +113,10 @@ ifdef USE_ZLIB
 OSX_ZLIB ?= -lz
 endif
 
+ifdef USE_SPARKLE
+OSX_STATIC_LIBS += -framework Sparkle -F$(STATICLIBPATH)
+endif
+
 ifdef USE_TERMCONV
 OSX_ICONV ?= -liconv
 endif