Bug 151963 – [EME] Correctly report errors when generating key requests from AVContentKeySession.

• Component: New Bugs
• Status: RESOLVED FIXED

[Jer Noble]

[EME] Correctly report errors when generating key requests from AVContentKeySession.

[Jer Noble]

Created attachment 266809 [details]
Patch

[Darin Adler]

Comment on attachment 266809 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=266809&action=review

> Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVContentKeySession.mm:286
> +        NSError* error = nullptr;

Style should be:

    NSError *error = nil;

> Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVContentKeySession.mm:290
> +            systemCode = std::abs(systemCodeForError(error));

The use of std::abs here seems bizarre. Test coverage?

[Jer Noble]

(In reply to comment #2)
> Comment on attachment 266809 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=266809&action=review
> 
> > Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVContentKeySession.mm:286
> > +        NSError* error = nullptr;
> 
> Style should be:
> 
>     NSError *error = nil;

Ok.

> > Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVContentKeySession.mm:290
> > +            systemCode = std::abs(systemCodeForError(error));
> 
> The use of std::abs here seems bizarre. Test coverage?

Established in https://bugs.webkit.org/show_bug.cgi?id=138986 / <rdar://problem/19118302>.

[Jer Noble]

Created attachment 269275 [details]
Patch

[Jer Noble]

New approach; fix the underlying problem where WebIDL requires a 'unsigned long' to be a 32-bit int, and we are storing the value as a 64-bit int.

[Jer Noble]

Committed r195302: <http://trac.webkit.org/changeset/195302>

[Ryan Haddad]

This change broke the Windows build:

c:\cygwin\home\buildbot\slave\win-release\build\source\webcore\platform\graphics\avfoundation\cf\CDMSessionAVFoundationCF.h(47): error C3668: 'WebCore::CDMSessionAVFoundationCF::generateKeyRequest': method with override specifier 'override' did not override any base class methods (compiling source file C:\cygwin\home\buildbot\slave\win-release\build\Source\WebCore\platform\graphics\avfoundation\cf\CDMSessionAVFoundationCF.cpp) [C:\cygwin\home\buildbot\slave\win-release\build\WebKitBuild\Release\Source\WebCore\WebCore.vcxproj]
c:\cygwin\home\buildbot\slave\win-release\build\source\webcore\platform\graphics\avfoundation\cf\CDMSessionAVFoundationCF.h(49): error C3668: 'WebCore::CDMSessionAVFoundationCF::update': method with override specifier 'override' did not override any base class methods (compiling source file C:\cygwin\home\buildbot\slave\win-release\build\Source\WebCore\platform\graphics\avfoundation\cf\CDMSessionAVFoundationCF.cpp) [C:\cygwin\home\buildbot\slave\win-release\build\WebKitBuild\Release\Source\WebCore\WebCore.vcxproj]
  JSWebKitPlaybackTargetAvailabilityEvent.cpp

<https://build.webkit.org/builders/Apple%20Win%20Release%20%28Build%29/builds/75221>

[Jer Noble]

Created attachment 269339 [details]
Patch for landing

Fix the Windows build.

[Jer Noble]

Created attachment 269342 [details]
Patch for landing

[WebKit Commit Bot]

Comment on attachment 269342 [details]
Patch for landing

Clearing flags on attachment: 269342

Committed r195410: <http://trac.webkit.org/changeset/195410>

[WebKit Commit Bot]

Comment on attachment 269342 [details]
Patch for landing

Rejecting attachment 269342 [details] from commit-queue.

Failed to run "['/Volumes/Data/EWS/WebKit/Tools/Scripts/webkit-patch', '--status-host=webkit-queues.webkit.org', '--bot-id=webkit-cq-03', 'apply-attachment', '--no-update', '--non-interactive', 269342, '--port=mac']" exit_code: 2 cwd: /Volumes/Data/EWS/WebKit

Last 500 characters of output:
ED at 65.
Hunk #4 FAILED at 96.
4 out of 4 hunks FAILED -- saving rejects to file Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionMediaSourceAVFObjC.mm.rej
patching file Source/WebCore/testing/MockCDM.cpp
Hunk #1 FAILED at 44.
Hunk #2 FAILED at 112.
Hunk #3 FAILED at 128.
3 out of 3 hunks FAILED -- saving rejects to file Source/WebCore/testing/MockCDM.cpp.rej

Failed to run "[u'/Volumes/Data/EWS/WebKit/Tools/Scripts/svn-apply', '--force']" exit_code: 1 cwd: /Volumes/Data/EWS/WebKit

Full output: http://webkit-queues.webkit.org/results/726179

[Joseph Pecoraro]

Comment on attachment 269342 [details]
Patch for landing

View in context: https://bugs.webkit.org/attachment.cgi?id=269342&action=review

> Source/WebCore/platform/graphics/avfoundation/objc/CDMSessionAVStreamSession.mm:307
> -PassRefPtr<Uint8Array> CDMSessionAVStreamSession::generateKeyReleaseMessage(unsigned short& errorCode, unsigned long& systemCode)
> +PassRefPtr<Uint8Array> CDMSessionAVStreamSession::generateKeyReleaseMessage(unsigned short& errorCode, uint32_t systemCode)

The change from reference to non-reference seems unintentional. No caller actually uses the value, but it does get assigned inside this method.

The static analyzer complains about the unused values assigned to systemCode.