Title: [207704] trunk/Source
Revision
207704
Author
eric.carl...@apple.com
Date
2016-10-21 20:35:04 -0700 (Fri, 21 Oct 2016)

Log Message

[MediaStream] Dynamically generate media capture sandbox extensions
https://bugs.webkit.org/show_bug.cgi?id=154861
<rdar://problem/24909411>

Reviewed by Tim Horton.

Source/WebCore:

No new tests, some of these changes are covered by existing tests and some can only be tested
with physical capture devices.

* platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.mm: AVSampleBufferAudioRenderer
  and AVSampleBufferRenderSynchronizer are now declared in AVFoundationSPI.h.

* platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.h:
* platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.mm:
(WebCore::MediaPlayerPrivateMediaStreamAVFObjC::MediaPlayerPrivateMediaStreamAVFObjC): Initialize 
  AVSampleBufferRenderSynchronizer.
(WebCore::MediaPlayerPrivateMediaStreamAVFObjC::isAvailable): Fail if AVSampleBufferRenderSynchronizer
  isn't available.
(WebCore::MediaPlayerPrivateMediaStreamAVFObjC::enqueueAudioSampleBufferFromTrack): Take a MediaSample&
  instead of a PlatformSample&.
(WebCore::MediaPlayerPrivateMediaStreamAVFObjC::enqueueVideoSampleBufferFromTrack): Ditto.
(WebCore::MediaPlayerPrivateMediaStreamAVFObjC::ensureLayer): Add the sample buffer display 
  later to the synchronizer.
(WebCore::MediaPlayerPrivateMediaStreamAVFObjC::destroyLayer): Remove the sample buffer display 
  later from the synchronizer.
(WebCore::MediaPlayerPrivateMediaStreamAVFObjC::play): Start the synchronizer.
(WebCore::MediaPlayerPrivateMediaStreamAVFObjC::pause): Stash the current clock time in 
  m_pausedTime, but leave the clock running. Pause the synchronizer.
(WebCore::MediaPlayerPrivateMediaStreamAVFObjC::currentMediaTime): Return the clock time
  when playing, m_pausedTime time when paused because we leave the clock running forever.
(WebCore::MediaPlayerPrivateMediaStreamAVFObjC::sampleBufferUpdated):

* platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm: AVSampleBufferAudioRenderer
  is now declared in AVFoundationSPI.h.

* platform/spi/mac/AVFoundationSPI.h: Add AVSampleBufferAudioRenderer and AVSampleBufferRenderSynchronizer.

Source/WebKit2:

* Shared/SandboxExtension.h:
(WebKit::SandboxExtension::createHandleForGenericExtension):
* Shared/mac/SandboxExtensionMac.mm:
(WebKit::wkSandboxExtensionType): Add case for generic handle.
(WebKit::SandboxExtension::createHandleForGenericExtension): New.

* UIProcess/UserMediaPermissionRequestManagerProxy.cpp:
(WebKit::UserMediaPermissionRequestManagerProxy::invalidateRequests): Clear the list of extensions granted.
(WebKit::UserMediaPermissionRequestManagerProxy::userMediaAccessWasGranted): Extend the web 
  process sandbox as necessary.
* UIProcess/UserMediaPermissionRequestManagerProxy.h:

* WebProcess/MediaStream/UserMediaPermissionRequestManager.cpp:
(WebKit::UserMediaPermissionRequestManager::~UserMediaPermissionRequestManager): Revoke all
  sandbox extensions.
(WebKit::UserMediaPermissionRequestManager::grantUserMediaDevicesSandboxExtension): Consume
  sandbox extensions.
* WebProcess/MediaStream/UserMediaPermissionRequestManager.h:

* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::grantUserMediaDevicesSandboxExtension): Pass-through to user media manager.
* WebProcess/WebPage/WebPage.h:

* WebProcess/WebPage/WebPage.messages.in: Add GrantUserMediaDevicesSandboxExtension.

* WebProcess/com.apple.WebProcess.sb.in: Add rules, defines, and a macro to allow dynamic extensions
  for media capture devices.

Modified Paths

Diff

Modified: trunk/Source/WebCore/ChangeLog (207703 => 207704)


--- trunk/Source/WebCore/ChangeLog	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebCore/ChangeLog	2016-10-22 03:35:04 UTC (rev 207704)
@@ -1,3 +1,42 @@
+2016-10-21  Eric Carlson  <eric.carl...@apple.com>
+
+        [MediaStream] Dynamically generate media capture sandbox extensions
+        https://bugs.webkit.org/show_bug.cgi?id=154861
+        <rdar://problem/24909411>
+
+        Reviewed by Tim Horton.
+
+        No new tests, some of these changes are covered by existing tests and some can only be tested
+        with physical capture devices.
+
+        * platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.mm: AVSampleBufferAudioRenderer
+          and AVSampleBufferRenderSynchronizer are now declared in AVFoundationSPI.h.
+
+        * platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.h:
+        * platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.mm:
+        (WebCore::MediaPlayerPrivateMediaStreamAVFObjC::MediaPlayerPrivateMediaStreamAVFObjC): Initialize 
+          AVSampleBufferRenderSynchronizer.
+        (WebCore::MediaPlayerPrivateMediaStreamAVFObjC::isAvailable): Fail if AVSampleBufferRenderSynchronizer
+          isn't available.
+        (WebCore::MediaPlayerPrivateMediaStreamAVFObjC::enqueueAudioSampleBufferFromTrack): Take a MediaSample&
+          instead of a PlatformSample&.
+        (WebCore::MediaPlayerPrivateMediaStreamAVFObjC::enqueueVideoSampleBufferFromTrack): Ditto.
+        (WebCore::MediaPlayerPrivateMediaStreamAVFObjC::ensureLayer): Add the sample buffer display 
+          later to the synchronizer.
+        (WebCore::MediaPlayerPrivateMediaStreamAVFObjC::destroyLayer): Remove the sample buffer display 
+          later from the synchronizer.
+        (WebCore::MediaPlayerPrivateMediaStreamAVFObjC::play): Start the synchronizer.
+        (WebCore::MediaPlayerPrivateMediaStreamAVFObjC::pause): Stash the current clock time in 
+          m_pausedTime, but leave the clock running. Pause the synchronizer.
+        (WebCore::MediaPlayerPrivateMediaStreamAVFObjC::currentMediaTime): Return the clock time
+          when playing, m_pausedTime time when paused because we leave the clock running forever.
+        (WebCore::MediaPlayerPrivateMediaStreamAVFObjC::sampleBufferUpdated):
+
+        * platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm: AVSampleBufferAudioRenderer
+          is now declared in AVFoundationSPI.h.
+
+        * platform/spi/mac/AVFoundationSPI.h: Add AVSampleBufferAudioRenderer and AVSampleBufferRenderSynchronizer.
+
 2016-10-21  Commit Queue  <commit-qu...@webkit.org>
 
         Unreviewed, rolling out r207582.

Modified: trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.mm (207703 => 207704)


--- trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.mm	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.mm	2016-10-22 03:35:04 UTC (rev 207704)
@@ -93,31 +93,6 @@
 @end
 
 #pragma mark -
-#pragma mark AVSampleBufferAudioRenderer
-
-@interface AVSampleBufferAudioRenderer : NSObject
-- (void)setVolume:(float)volume;
-- (void)setMuted:(BOOL)muted;
-@property (nonatomic, copy) NSString *audioTimePitchAlgorithm;
-@end
-
-#pragma mark -
-#pragma mark AVSampleBufferRenderSynchronizer
-
-@interface AVSampleBufferRenderSynchronizer : NSObject
-- (CMTimebaseRef)timebase;
-- (float)rate;
-- (void)setRate:(float)rate;
-- (void)setRate:(float)rate time:(CMTime)time;
-- (NSArray *)renderers;
-- (void)addRenderer:(id)renderer;
-- (void)removeRenderer:(id)renderer atTime:(CMTime)time withCompletionHandler:(void (^)(BOOL didRemoveRenderer))completionHandler;
-- (id)addPeriodicTimeObserverForInterval:(CMTime)interval queue:(dispatch_queue_t)queue usingBlock:(void (^)(CMTime time))block;
-- (id)addBoundaryTimeObserverForTimes:(NSArray *)times queue:(dispatch_queue_t)queue usingBlock:(void (^)(void))block;
-- (void)removeTimeObserver:(id)observer;
-@end
-
-#pragma mark - 
 #pragma mark AVStreamSession
 
 @interface AVStreamSession : NSObject

Modified: trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.h (207703 => 207704)


--- trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.h	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.h	2016-10-22 03:35:04 UTC (rev 207704)
@@ -37,6 +37,7 @@
 
 OBJC_CLASS AVSampleBufferAudioRenderer;
 OBJC_CLASS AVSampleBufferDisplayLayer;
+OBJC_CLASS AVSampleBufferRenderSynchronizer;
 OBJC_CLASS AVStreamSession;
 typedef struct opaqueCMSampleBuffer *CMSampleBufferRef;
 
@@ -121,8 +122,8 @@
 
     void setSize(const IntSize&) override { /* No-op */ }
 
-    void enqueueAudioSampleBufferFromTrack(MediaStreamTrackPrivate&, PlatformSample);
-    void enqueueVideoSampleBufferFromTrack(MediaStreamTrackPrivate&, PlatformSample);
+    void enqueueAudioSampleBufferFromTrack(MediaStreamTrackPrivate&, MediaSample&);
+    void enqueueVideoSampleBufferFromTrack(MediaStreamTrackPrivate&, MediaSample&);
     bool shouldEnqueueVideoSampleBuffer() const;
     void flushAndRemoveVideoSampleBuffers();
 
@@ -186,7 +187,9 @@
     WeakPtrFactory<MediaPlayerPrivateMediaStreamAVFObjC> m_weakPtrFactory;
     RefPtr<MediaStreamPrivate> m_mediaStreamPrivate;
     RetainPtr<AVSampleBufferDisplayLayer> m_sampleBufferDisplayLayer;
+    RetainPtr<AVSampleBufferRenderSynchronizer> m_synchronizer;
     RetainPtr<CGImageRef> m_pausedImage;
+    double m_pausedTime { 0 };
     std::unique_ptr<Clock> m_clock;
 
     HashMap<String, RefPtr<AudioTrackPrivateMediaStream>> m_audioTrackMap;

Modified: trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.mm (207703 => 207704)


--- trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.mm	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaStreamAVFObjC.mm	2016-10-22 03:35:04 UTC (rev 207704)
@@ -29,6 +29,7 @@
 #if ENABLE(MEDIA_STREAM) && USE(AVFOUNDATION)
 
 #import "AVAudioCaptureSource.h"
+#import "AVFoundationSPI.h"
 #import "AVVideoCaptureSource.h"
 #import "AudioTrackPrivateMediaStream.h"
 #import "Clock.h"
@@ -35,6 +36,7 @@
 #import "GraphicsContext.h"
 #import "Logging.h"
 #import "MediaStreamPrivate.h"
+#import "MediaTimeAVFoundation.h"
 #import "VideoTrackPrivateMediaStream.h"
 #import <AVFoundation/AVSampleBufferDisplayLayer.h>
 #import <QuartzCore/CALayer.h>
@@ -54,6 +56,7 @@
 SOFT_LINK_FRAMEWORK_OPTIONAL(AVFoundation)
 
 SOFT_LINK_CLASS_OPTIONAL(AVFoundation, AVSampleBufferDisplayLayer)
+SOFT_LINK_CLASS_OPTIONAL(AVFoundation, AVSampleBufferRenderSynchronizer)
 
 namespace WebCore {
 
@@ -63,6 +66,7 @@
 MediaPlayerPrivateMediaStreamAVFObjC::MediaPlayerPrivateMediaStreamAVFObjC(MediaPlayer* player)
     : m_player(player)
     , m_weakPtrFactory(this)
+    , m_synchronizer(adoptNS([allocAVSampleBufferRenderSynchronizerInstance() init]))
     , m_clock(Clock::create())
 #if PLATFORM(MAC) && ENABLE(VIDEO_PRESENTATION_MODE)
     , m_videoFullscreenLayerManager(VideoFullscreenLayerManager::create())
@@ -99,7 +103,7 @@
 
 bool MediaPlayerPrivateMediaStreamAVFObjC::isAvailable()
 {
-    return AVFoundationLibrary() && isCoreMediaFrameworkAvailable() && getAVSampleBufferDisplayLayerClass();
+    return AVFoundationLibrary() && isCoreMediaFrameworkAvailable() && getAVSampleBufferDisplayLayerClass() && getAVSampleBufferRenderSynchronizerClass();
 }
 
 void MediaPlayerPrivateMediaStreamAVFObjC::getSupportedTypes(HashSet<String, ASCIICaseInsensitiveHash>& types)
@@ -119,26 +123,24 @@
 #pragma mark -
 #pragma mark AVSampleBuffer Methods
 
-void MediaPlayerPrivateMediaStreamAVFObjC::enqueueAudioSampleBufferFromTrack(MediaStreamTrackPrivate&, PlatformSample)
+void MediaPlayerPrivateMediaStreamAVFObjC::enqueueAudioSampleBufferFromTrack(MediaStreamTrackPrivate&, MediaSample&)
 {
     // FIXME: https://bugs.webkit.org/show_bug.cgi?id=159836
 }
 
-void MediaPlayerPrivateMediaStreamAVFObjC::enqueueVideoSampleBufferFromTrack(MediaStreamTrackPrivate& track, PlatformSample platformSample)
+void MediaPlayerPrivateMediaStreamAVFObjC::enqueueVideoSampleBufferFromTrack(MediaStreamTrackPrivate& track, MediaSample& sample)
 {
-    if (&track != m_mediaStreamPrivate->activeVideoTrack())
+    if (&track != m_mediaStreamPrivate->activeVideoTrack() || !shouldEnqueueVideoSampleBuffer())
         return;
 
-    if (shouldEnqueueVideoSampleBuffer()) {
-        [m_sampleBufferDisplayLayer enqueueSampleBuffer:platformSample.sample.cmSampleBuffer];
-        m_isFrameDisplayed = true;
-        
-        if (!m_hasEverEnqueuedVideoFrame) {
-            m_hasEverEnqueuedVideoFrame = true;
-            m_player->firstVideoFrameAvailable();
+    sample.setTimestamps(toMediaTime(CMTimebaseGetTime([m_synchronizer timebase])), MediaTime::invalidTime());
+    [m_sampleBufferDisplayLayer enqueueSampleBuffer:sample.platformSample().sample.cmSampleBuffer];
+    m_isFrameDisplayed = true;
 
-            updatePausedImage();
-        }
+    if (!m_hasEverEnqueuedVideoFrame) {
+        m_hasEverEnqueuedVideoFrame = true;
+        m_player->firstVideoFrameAvailable();
+        updatePausedImage();
     }
 }
 
@@ -172,7 +174,9 @@
     [m_sampleBufferDisplayLayer setName:@"MediaPlayerPrivateMediaStreamAVFObjC AVSampleBufferDisplayLayer"];
 #endif
     m_sampleBufferDisplayLayer.get().backgroundColor = cachedCGColor(Color::black);
-    
+
+    [m_synchronizer addRenderer:m_sampleBufferDisplayLayer.get()];
+
     renderingModeChanged();
     
 #if PLATFORM(MAC) && ENABLE(VIDEO_PRESENTATION_MODE)
@@ -186,7 +190,12 @@
         return;
     
     [m_sampleBufferDisplayLayer flush];
+    CMTime currentTime = CMTimebaseGetTime([m_synchronizer timebase]);
+    [m_synchronizer removeRenderer:m_sampleBufferDisplayLayer.get() atTime:currentTime withCompletionHandler:^(BOOL){
+        // No-op.
+    }];
     m_sampleBufferDisplayLayer = nullptr;
+
     renderingModeChanged();
     
 #if PLATFORM(MAC) && ENABLE(VIDEO_PRESENTATION_MODE)
@@ -310,6 +319,7 @@
 
     m_clock->start();
     m_playing = true;
+    [m_synchronizer setRate:1];
     m_haveEverPlayed = true;
     scheduleDeferredTask([this] {
         updateDisplayMode();
@@ -324,8 +334,9 @@
     if (!metaDataAvailable() || !m_playing || m_ended)
         return;
 
-    m_clock->stop();
+    m_pausedTime = m_clock->currentTime();
     m_playing = false;
+    [m_synchronizer setRate:0];
     updateDisplayMode();
     updatePausedImage();
 }
@@ -386,7 +397,7 @@
 
 MediaTime MediaPlayerPrivateMediaStreamAVFObjC::currentMediaTime() const
 {
-    return MediaTime::createWithDouble(m_clock->currentTime());
+    return MediaTime::createWithDouble(m_playing ? m_clock->currentTime() : m_pausedTime);
 }
 
 MediaPlayer::NetworkState MediaPlayerPrivateMediaStreamAVFObjC::networkState() const
@@ -514,7 +525,7 @@
         // FIXME: https://bugs.webkit.org/show_bug.cgi?id=159836
         break;
     case RealtimeMediaSource::Video:
-        enqueueVideoSampleBufferFromTrack(track, mediaSample.platformSample());
+        enqueueVideoSampleBufferFromTrack(track, mediaSample);
         m_hasReceivedMedia = true;
         scheduleDeferredTask([this] {
             updateReadyState();

Modified: trunk/Source/WebCore/platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm (207703 => 207704)


--- trunk/Source/WebCore/platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebCore/platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm	2016-10-22 03:35:04 UTC (rev 207704)
@@ -112,19 +112,6 @@
 @end
 
 #pragma mark -
-#pragma mark AVSampleBufferAudioRenderer
-
-@interface AVSampleBufferAudioRenderer : NSObject
-- (NSInteger)status;
-- (NSError*)error;
-- (void)enqueueSampleBuffer:(CMSampleBufferRef)sampleBuffer;
-- (void)flush;
-- (BOOL)isReadyForMoreMediaData;
-- (void)requestMediaDataWhenReadyOnQueue:(dispatch_queue_t)queue usingBlock:(void (^)(void))block;
-- (void)stopRequestingMediaData;
-@end
-
-#pragma mark -
 #pragma mark WebAVStreamDataParserListener
 
 @interface WebAVStreamDataParserListener : NSObject<AVStreamDataParserOutputHandling> {

Modified: trunk/Source/WebCore/platform/spi/mac/AVFoundationSPI.h (207703 => 207704)


--- trunk/Source/WebCore/platform/spi/mac/AVFoundationSPI.h	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebCore/platform/spi/mac/AVFoundationSPI.h	2016-10-22 03:35:04 UTC (rev 207704)
@@ -162,3 +162,40 @@
 @end
 
 NS_ASSUME_NONNULL_END
+
+#import <CoreMedia/CMSampleBuffer.h>
+#import <CoreMedia/CMSync.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface AVSampleBufferRenderSynchronizer : NSObject
+- (CMTimebaseRef)timebase;
+- (float)rate;
+- (void)setRate:(float)rate;
+- (void)setRate:(float)rate time:(CMTime)time;
+- (NSArray *)renderers;
+- (void)addRenderer:(id)renderer;
+- (void)removeRenderer:(id)renderer atTime:(CMTime)time withCompletionHandler:(void (^)(BOOL didRemoveRenderer))completionHandler;
+- (id)addPeriodicTimeObserverForInterval:(CMTime)interval queue:(dispatch_queue_t)queue usingBlock:(void (^)(CMTime time))block;
+- (id)addBoundaryTimeObserverForTimes:(NSArray *)times queue:(dispatch_queue_t)queue usingBlock:(void (^)(void))block;
+- (void)removeTimeObserver:(id)observer;
+@end
+
+NS_ASSUME_NONNULL_END
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface AVSampleBufferAudioRenderer : NSObject
+- (NSInteger)status;
+- (NSError*)error;
+- (void)enqueueSampleBuffer:(CMSampleBufferRef)sampleBuffer;
+- (void)flush;
+- (BOOL)isReadyForMoreMediaData;
+- (void)requestMediaDataWhenReadyOnQueue:(dispatch_queue_t)queue usingBlock:(void (^)(void))block;
+- (void)stopRequestingMediaData;
+- (void)setVolume:(float)volume;
+- (void)setMuted:(BOOL)muted;
+@property (nonatomic, copy) NSString *audioTimePitchAlgorithm;
+@end
+
+NS_ASSUME_NONNULL_END

Modified: trunk/Source/WebKit2/ChangeLog (207703 => 207704)


--- trunk/Source/WebKit2/ChangeLog	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/ChangeLog	2016-10-22 03:35:04 UTC (rev 207704)
@@ -1,3 +1,39 @@
+2016-10-21  Eric Carlson  <eric.carl...@apple.com>
+
+        [MediaStream] Dynamically generate media capture sandbox extensions
+        https://bugs.webkit.org/show_bug.cgi?id=154861
+        <rdar://problem/24909411>
+
+        Reviewed by Tim Horton.
+
+        * Shared/SandboxExtension.h:
+        (WebKit::SandboxExtension::createHandleForGenericExtension):
+        * Shared/mac/SandboxExtensionMac.mm:
+        (WebKit::wkSandboxExtensionType): Add case for generic handle.
+        (WebKit::SandboxExtension::createHandleForGenericExtension): New.
+
+        * UIProcess/UserMediaPermissionRequestManagerProxy.cpp:
+        (WebKit::UserMediaPermissionRequestManagerProxy::invalidateRequests): Clear the list of extensions granted.
+        (WebKit::UserMediaPermissionRequestManagerProxy::userMediaAccessWasGranted): Extend the web 
+          process sandbox as necessary.
+        * UIProcess/UserMediaPermissionRequestManagerProxy.h:
+
+        * WebProcess/MediaStream/UserMediaPermissionRequestManager.cpp:
+        (WebKit::UserMediaPermissionRequestManager::~UserMediaPermissionRequestManager): Revoke all
+          sandbox extensions.
+        (WebKit::UserMediaPermissionRequestManager::grantUserMediaDevicesSandboxExtension): Consume
+          sandbox extensions.
+        * WebProcess/MediaStream/UserMediaPermissionRequestManager.h:
+
+        * WebProcess/WebPage/WebPage.cpp:
+        (WebKit::WebPage::grantUserMediaDevicesSandboxExtension): Pass-through to user media manager.
+        * WebProcess/WebPage/WebPage.h:
+
+        * WebProcess/WebPage/WebPage.messages.in: Add GrantUserMediaDevicesSandboxExtension.
+
+        * WebProcess/com.apple.WebProcess.sb.in: Add rules, defines, and a macro to allow dynamic extensions
+          for media capture devices.
+
 2016-10-21  Gavin Barraclough  <barraclo...@apple.com>
 
         WebPage should take UserActivity directly for user input

Modified: trunk/Source/WebKit2/Shared/SandboxExtension.h (207703 => 207704)


--- trunk/Source/WebKit2/Shared/SandboxExtension.h	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/Shared/SandboxExtension.h	2016-10-22 03:35:04 UTC (rev 207704)
@@ -47,7 +47,8 @@
 public:
     enum Type {
         ReadOnly,
-        ReadWrite
+        ReadWrite,
+        Generic,
     };
 
     class Handle {
@@ -93,6 +94,7 @@
     static bool createHandle(const String& path, Type type, Handle&);
     static bool createHandleForReadWriteDirectory(const String& path, Handle&); // Will attempt to create the directory.
     static String createHandleForTemporaryFile(const String& prefix, Type type, Handle&);
+    static bool createHandleForGenericExtension(const String& extensionClass, Handle&);
     ~SandboxExtension();
 
     bool consume();
@@ -127,6 +129,7 @@
 inline bool SandboxExtension::createHandle(const String&, Type, Handle&) { return true; }
 inline bool SandboxExtension::createHandleForReadWriteDirectory(const String&, Handle&) { return true; }
 inline String SandboxExtension::createHandleForTemporaryFile(const String& /*prefix*/, Type, Handle&) {return String();}
+inline bool SandboxExtension::createHandleForGenericExtension(const String& /*extensionClass*/, Handle&) { return true; }
 inline SandboxExtension::~SandboxExtension() { }
 inline bool SandboxExtension::revoke() { return true; }
 inline bool SandboxExtension::consume() { return true; }

Modified: trunk/Source/WebKit2/Shared/mac/SandboxExtensionMac.mm (207703 => 207704)


--- trunk/Source/WebKit2/Shared/mac/SandboxExtensionMac.mm	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/Shared/mac/SandboxExtensionMac.mm	2016-10-22 03:35:04 UTC (rev 207704)
@@ -159,6 +159,9 @@
         return WKSandboxExtensionTypeReadOnly;
     case SandboxExtension::ReadWrite:
         return WKSandboxExtensionTypeReadWrite;
+    case SandboxExtension::Generic:
+        return WKSandboxExtensionTypeGeneric;
+
     }
 
     CRASH();
@@ -274,6 +277,19 @@
     return String(path.data());
 }
 
+bool SandboxExtension::createHandleForGenericExtension(const String& extensionClass, Handle& handle)
+{
+    ASSERT(!handle.m_sandboxExtension);
+
+    handle.m_sandboxExtension = WKSandboxExtensionCreate(extensionClass.utf8().data(), wkSandboxExtensionType(Type::Generic));
+    if (!handle.m_sandboxExtension) {
+        WTFLogAlways("Could not create a '%s' sandbox extension", extensionClass.utf8().data());
+        return false;
+    }
+    
+    return true;
+}
+
 SandboxExtension::SandboxExtension(const Handle& handle)
     : m_sandboxExtension(handle.m_sandboxExtension)
     , m_useCount(0)

Modified: trunk/Source/WebKit2/UIProcess/UserMediaPermissionRequestManagerProxy.cpp (207703 => 207704)


--- trunk/Source/WebKit2/UIProcess/UserMediaPermissionRequestManagerProxy.cpp	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/UIProcess/UserMediaPermissionRequestManagerProxy.cpp	2016-10-22 03:35:04 UTC (rev 207704)
@@ -47,6 +47,8 @@
     for (auto& request : m_pendingDeviceRequests.values())
         request->invalidate();
     m_pendingDeviceRequests.clear();
+
+    m_pageSandboxExtensionsGranted.clear();
 }
 
 Ref<UserMediaPermissionRequestProxy> UserMediaPermissionRequestManagerProxy::createRequest(uint64_t userMediaID, const Vector<String>& audioDeviceUIDs, const Vector<String>& videoDeviceUIDs)
@@ -120,6 +122,8 @@
 
 void UserMediaPermissionRequestManagerProxy::userMediaAccessWasGranted(uint64_t userMediaID, const String& audioDeviceUID, const String& videoDeviceUID)
 {
+    ASSERT(!audioDeviceUID.isEmpty() || !videoDeviceUID.isEmpty());
+
     if (!m_page.isValid())
         return;
 
@@ -127,6 +131,30 @@
         return;
 
 #if ENABLE(MEDIA_STREAM)
+    size_t extensionCount = 0;
+    unsigned requiredExtensions = SandboxExtensionsGranted::None;
+    if (!audioDeviceUID.isEmpty()) {
+        requiredExtensions |= SandboxExtensionsGranted::Audio;
+        extensionCount++;
+    }
+    if (!videoDeviceUID.isEmpty()) {
+        requiredExtensions |= SandboxExtensionsGranted::Video;
+        extensionCount++;
+    }
+
+    unsigned currentExtensions = m_pageSandboxExtensionsGranted.get(m_page.pageID());
+    if (!(requiredExtensions & currentExtensions)) {
+        ASSERT(extensionCount);
+        m_pageSandboxExtensionsGranted.set(m_page.pageID(), requiredExtensions | currentExtensions);
+        SandboxExtension::HandleArray handles;
+        handles.allocate(extensionCount);
+        if (!videoDeviceUID.isEmpty())
+            SandboxExtension::createHandleForGenericExtension("com.apple.webkit.camera", handles[--extensionCount]);
+        if (!audioDeviceUID.isEmpty())
+            SandboxExtension::createHandleForGenericExtension("com.apple.webkit.microphone", handles[--extensionCount]);
+        m_page.process().send(Messages::WebPage::GrantUserMediaDevicesSandboxExtension(handles), m_page.pageID());
+    }
+
     m_page.process().send(Messages::WebPage::UserMediaAccessWasGranted(userMediaID, audioDeviceUID, videoDeviceUID), m_page.pageID());
 #else
     UNUSED_PARAM(audioDeviceUID);

Modified: trunk/Source/WebKit2/UIProcess/UserMediaPermissionRequestManagerProxy.h (207703 => 207704)


--- trunk/Source/WebKit2/UIProcess/UserMediaPermissionRequestManagerProxy.h	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/UIProcess/UserMediaPermissionRequestManagerProxy.h	2016-10-22 03:35:04 UTC (rev 207704)
@@ -59,6 +59,13 @@
     HashMap<uint64_t, RefPtr<UserMediaPermissionRequestProxy>> m_pendingUserMediaRequests;
     HashMap<uint64_t, RefPtr<UserMediaPermissionCheckProxy>> m_pendingDeviceRequests;
 
+    enum SandboxExtensionsGranted {
+        None = 0,
+        Video = 1 << 0,
+        Audio = 1 << 1
+    };
+    HashMap<uint64_t, unsigned> m_pageSandboxExtensionsGranted;
+
     WebPageProxy& m_page;
 };
 

Modified: trunk/Source/WebKit2/WebProcess/MediaStream/UserMediaPermissionRequestManager.cpp (207703 => 207704)


--- trunk/Source/WebKit2/WebProcess/MediaStream/UserMediaPermissionRequestManager.cpp	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/WebProcess/MediaStream/UserMediaPermissionRequestManager.cpp	2016-10-22 03:35:04 UTC (rev 207704)
@@ -50,6 +50,8 @@
 
 UserMediaPermissionRequestManager::~UserMediaPermissionRequestManager()
 {
+    for (auto& sandboxExtension : m_userMediaDeviceSandboxExtensions)
+        sandboxExtension->revoke();
 }
 
 void UserMediaPermissionRequestManager::startUserMediaRequest(UserMediaRequest& request)
@@ -142,6 +144,18 @@
     request->setDeviceInfo(deviceList, mediaDeviceIdentifierHashSalt, hasPersistentAccess);
 }
 
+void UserMediaPermissionRequestManager::grantUserMediaDevicesSandboxExtension(const SandboxExtension::HandleArray& sandboxExtensionHandles)
+{
+    ASSERT(m_userMediaDeviceSandboxExtensions.size() <= 2);
+
+    for (size_t i = 0; i < sandboxExtensionHandles.size(); i++) {
+        if (RefPtr<SandboxExtension> extension = SandboxExtension::create(sandboxExtensionHandles[i])) {
+            extension->consume();
+            m_userMediaDeviceSandboxExtensions.append(extension.release());
+        }
+    }
+}
+
 } // namespace WebKit
 
 #endif // ENABLE(MEDIA_STREAM)

Modified: trunk/Source/WebKit2/WebProcess/MediaStream/UserMediaPermissionRequestManager.h (207703 => 207704)


--- trunk/Source/WebKit2/WebProcess/MediaStream/UserMediaPermissionRequestManager.h	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/WebProcess/MediaStream/UserMediaPermissionRequestManager.h	2016-10-22 03:35:04 UTC (rev 207704)
@@ -22,6 +22,7 @@
 
 #if ENABLE(MEDIA_STREAM)
 
+#include "SandboxExtension.h"
 #include <WebCore/MediaConstraints.h>
 #include <WebCore/MediaDevicesEnumerationRequest.h>
 #include <WebCore/UserMediaClient.h>
@@ -48,6 +49,8 @@
     void cancelMediaDevicesEnumeration(WebCore::MediaDevicesEnumerationRequest&);
     void didCompleteMediaDeviceEnumeration(uint64_t, const Vector<WebCore::CaptureDevice>& deviceList, const String& deviceIdentifierHashSalt, bool originHasPersistentAccess);
 
+    void grantUserMediaDevicesSandboxExtension(const SandboxExtension::HandleArray&);
+
 private:
     WebPage& m_page;
 
@@ -56,6 +59,8 @@
 
     HashMap<uint64_t, RefPtr<WebCore::MediaDevicesEnumerationRequest>> m_idToMediaDevicesEnumerationRequestMap;
     HashMap<RefPtr<WebCore::MediaDevicesEnumerationRequest>, uint64_t> m_mediaDevicesEnumerationRequestToIDMap;
+
+    Vector<RefPtr<SandboxExtension>> m_userMediaDeviceSandboxExtensions;
 };
 
 } // namespace WebKit

Modified: trunk/Source/WebKit2/WebProcess/WebPage/WebPage.cpp (207703 => 207704)


--- trunk/Source/WebKit2/WebProcess/WebPage/WebPage.cpp	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/WebProcess/WebPage/WebPage.cpp	2016-10-22 03:35:04 UTC (rev 207704)
@@ -3706,6 +3706,11 @@
 {
     m_userMediaPermissionRequestManager.didCompleteMediaDeviceEnumeration(userMediaID, devices, deviceIdentifierHashSalt, originHasPersistentAccess);
 }
+
+void WebPage::grantUserMediaDevicesSandboxExtension(const SandboxExtension::HandleArray& handles)
+{
+    m_userMediaPermissionRequestManager.grantUserMediaDevicesSandboxExtension(handles);
+}
 #endif
 
 #if !PLATFORM(IOS)

Modified: trunk/Source/WebKit2/WebProcess/WebPage/WebPage.h (207703 => 207704)


--- trunk/Source/WebKit2/WebProcess/WebPage/WebPage.h	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/WebProcess/WebPage/WebPage.h	2016-10-22 03:35:04 UTC (rev 207704)
@@ -1171,6 +1171,7 @@
     void userMediaAccessWasDenied(uint64_t userMediaID, uint64_t reason, String invalidConstraint);
 
     void didCompleteMediaDeviceEnumeration(uint64_t userMediaID, const Vector<WebCore::CaptureDevice>& devices, const String& deviceIdentifierHashSalt, bool originHasPersistentAccess);
+    void grantUserMediaDevicesSandboxExtension(const SandboxExtension::HandleArray&);
 #endif
 
     void advanceToNextMisspelling(bool startBeforeSelection);

Modified: trunk/Source/WebKit2/WebProcess/WebPage/WebPage.messages.in (207703 => 207704)


--- trunk/Source/WebKit2/WebProcess/WebPage/WebPage.messages.in	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/WebProcess/WebPage/WebPage.messages.in	2016-10-22 03:35:04 UTC (rev 207704)
@@ -291,6 +291,7 @@
     UserMediaAccessWasGranted(uint64_t userMediaID, String audioDeviceUID, String videoDeviceUID)
     UserMediaAccessWasDenied(uint64_t userMediaID, uint64_t reason, String invalidConstraint)
     DidCompleteMediaDeviceEnumeration(uint64_t userMediaID, Vector<WebCore::CaptureDevice> devices, String mediaDeviceIdentifierHashSalt, bool hasPersistentAccess)
+    GrantUserMediaDevicesSandboxExtension(WebKit::SandboxExtension::HandleArray sandboxExtensionHandle)
 #endif
 
     # Notification

Modified: trunk/Source/WebKit2/WebProcess/com.apple.WebProcess.sb.in (207703 => 207704)


--- trunk/Source/WebKit2/WebProcess/com.apple.WebProcess.sb.in	2016-10-22 02:47:18 UTC (rev 207703)
+++ trunk/Source/WebKit2/WebProcess/com.apple.WebProcess.sb.in	2016-10-22 03:35:04 UTC (rev 207704)
@@ -318,3 +318,83 @@
 
 ;; Data Detectors
 (allow file-read* (subpath "/private/var/db/datadetectors/sys"))
+
+;; Media capture, utilities
+(if (not (defined? 'sbpl-filter?))
+  (define (sbpl-filter? x)
+      (and (list? x)
+           (eq? (car x) 'filter))))
+
+(macro (with-filter form)
+   (let* ((ps (cdr form))
+          (extra-filter (car ps))
+          (rules (cdr ps)))
+    `(letrec
+        ((collect
+             (lambda (l filters non-filters)
+                 (if (null? l)
+                     (list filters non-filters)
+                     (let* 
+                         ((x (car l))
+                          (rest (cdr l)))
+                         (if (sbpl-filter? x)
+                             (collect rest (cons x filters) non-filters)
+                             (collect rest filters (cons x non-filters)))))))
+         (inject-filter
+             (lambda args
+                 (let* ((collected (collect args '() '()))
+                        (filters (car collected))
+                        (non-filters (cadr collected)))
+                 (if (null? filters)
+                     (cons ,extra-filter non-filters)
+                     (cons (require-all (apply require-any filters) ,extra-filter) non-filters)))))
+         (orig-allow allow)
+         (orig-deny deny)
+         (wrapper
+             (lambda (action)
+                 (lambda args (apply action (apply inject-filter args))))))
+        (set! allow (wrapper orig-allow))
+        (set! deny (wrapper orig-deny))
+        ,@rules
+        (set! deny orig-deny)
+        (set! allow orig-allow))))
+
+(define (home-library-preferences-regex home-library-preferences-relative-regex)
+    (regex (string-append "^" (regex-quote (param "HOME_LIBRARY_PREFERENCES_DIR")) home-library-preferences-relative-regex)))
+
+(define (home-library-preferences-literal home-library-preferences-relative-literal)
+    (literal (string-append (param "HOME_LIBRARY_PREFERENCES_DIR") home-library-preferences-relative-literal)))
+
+(define (shared-preferences-read . domains)
+  (for-each (lambda (domain)
+              (begin
+                (if (defined? `user-preference-read)
+                    (allow user-preference-read (preference-domain domain)))
+                ; (Temporary) backward compatibility with non-CFPreferences readers.
+                (allow file-read*
+                       (literal (string-append "/Library/Preferences/" domain ".plist"))
+                       (home-library-preferences-literal (string-append "/" domain ".plist"))
+                       (home-library-preferences-regex (string-append #"/ByHost/" (regex-quote domain) #"\..*\.plist$")))))
+            domains))
+
+;; Media capture, microphone access
+(with-filter (extension "com.apple.webkit.microphone")
+    (allow device-microphone))
+
+;; Media capture, camera access
+(with-filter (extension "com.apple.webkit.camera")
+    (shared-preferences-read "com.apple.coremedia")
+    (allow mach-lookup (extension "com.apple.app-sandbox.mach"))
+    (allow mach-lookup
+        (global-name "com.apple.cmio.AppleCameraAssistant")
+        ;; Apple DAL assistants
+        (global-name "com.apple.cmio.VDCAssistant")
+        (global-name "com.apple.cmio.AVCAssistant")
+        (global-name "com.apple.cmio.IIDCVideoAssistant")
+        ;; QuickTimeIIDCDigitizer assistant
+        (global-name "com.apple.IIDCAssistant"))
+    (allow iokit-open
+        ;; QuickTimeUSBVDCDigitizer
+        (iokit-user-client-class "IOUSBDeviceUserClientV2")
+        (iokit-user-client-class "IOUSBInterfaceUserClientV2"))
+    (allow device-camera))
_______________________________________________
webkit-changes mailing list
webkit-changes@lists.webkit.org
https://lists.webkit.org/mailman/listinfo/webkit-changes

Reply via email to