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I have an application running in the sandbox which launches a helper application bundle using NSTask (the helper is contained within the bundle of the app).
Using the correct entitlements the main app is able to launch the helper using NSTask and the sandbox is inherited with no crashing. The only problem seems to be when I open an NSOpenPanel I get the crash below. Please note that the caller app does not crash when using NSOpenPanel, just the helper.
This looks like a bug in the system so maybe if someone has encountered this before there is a workaround for it.
Here are the entitlements for the main app:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>com.apple.security.app-sandbox</key>
<true/>
<key>com.apple.security.device.usb</key>
<true/>
<key>com.apple.security.files.bookmarks.app-scope</key>
<true/>
<key>com.apple.security.device.serial</key>
<true/>
<key>com.apple.security.network.client</key>
<true/>
<key>com.apple.security.files.user-selected.read-write</key>
<true/>
</dict>
</plist>
The entitlements for the helper:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>com.apple.security.app-sandbox</key>
<true/>
<key>com.apple.security.inherit</key>
<true/>
</dict>
</plist>
The crash when NSOpenPanel is opened:
2015-12-09 10:35:56.879 Desktops[29807:22090051] -[NSVBSavePanel init] caught non-fatal NSObjectNotAvailableException 'service com.apple.appkit.xpc.openAndSavePanelService failed to init an instance of NSOpenPanelService on behalf of <NSLayerCentricRemoteView: 0x1077fd0> due to {
callStackSymbols = (
0 CoreFoundation 0x00007fff8f375e32 __exceptionPreprocess + 178
1 libobjc.A.dylib 0x00007fff855084fa objc_exception_throw + 48
2 CoreFoundation 0x00007fff8f3dc65d +[NSException raise:format:] + 205
3 com.apple.appkit.xpc.openAndSavePanelService 0x000000010879493a com.apple.appkit.xpc.openAndSavePanelService + 6458
4 AppKit 0x00007fff87e4a662 -[NSViewController _loadViewIfRequired] + 75
5 AppKit 0x00007fff87e4a5cd -[NSViewController view] + 30
6 ViewBridge 0x00007fff9180dbab -[NSViewServiceMarshal _bootstrap:replyData:] + 11432
7 ViewBridge 0x00007fff9180efb5 -[NSViewServiceMarshal bootstrap:withReply:] + 124
8 CoreFoundation 0x00007fff8f2e7b5c __invoking___ + 140
9 CoreFoundation 0x00007fff8f2e79ee -[NSInvocation invoke] + 286
10 CoreFoundation 0x00007fff8f302e36 -[NSInvocation invokeWithTarget:] + 54
11 ViewBridge 0x00007fff91847f01 -[NSVB_ViewServiceImplicitAnimationDecodingProxy forwardInvocation:] + 264
12 CoreFoundation 0x00007fff8f2e6472 ___forwarding___ + 514
13 CoreFoundation 0x00007fff8f2e61e8 _CF_forwarding_prep_0 + 120
14 CoreFoundation 0x00007fff8f2e7b5c __invoking___ + 140
15 CoreFoundation 0x00007fff8f2e79ee -[NSInvocation invoke] + 286
16 CoreFoundation 0x00007fff8f302e36 -[NSInvocation invokeWithTarget:] + 54
17 ViewBridge 0x00007fff918189fa -[NSVB_QueueingProxy forwardInvocation:] + 323
18 CoreFoundation 0x00007fff8f2e6472 ___forwarding___ + 514
19 CoreFoundation 0x00007fff8f2e61e8 _CF_forwarding_prep_0 + 120
20 CoreFoundation 0x00007fff8f2e7b5c __invoking___ + 140
21 CoreFoundation 0x00007fff8f2e79ee -[NSInvocation invoke] + 286
22 CoreFoundation 0x00007fff8f302e36 -[NSInvocation invokeWithTarget:] + 54
23 CoreFoundation 0x00007fff8f2e6472 ___forwarding___ + 514
24 CoreFoundation 0x00007fff8f2e61e8 _CF_forwarding_prep_0 + 120
25 CoreFoundation 0x00007fff8f2e7b5c __invoking___ + 140
26 CoreFoundation 0x00007fff8f2e79ee -[NSInvocation invoke] + 286
27 ViewBridge 0x00007fff918573db withHintInProgress + 501
28 ViewBridge 0x00007fff91857161 __deferNSXPCInvocationOntoMainThread_block_invoke_2 + 220
29 ViewBridge 0x00007fff917f5c3f +[NSViewServiceApplication withHostPID:invoke:] + 46
30 ViewBridge 0x00007fff9185702f __deferNSXPCInvocationOntoMainThread_block_invoke + 129
31 ViewBridge 0x00007fff91856c3a __deferBlockOntoMainThread_block_invoke_2 + 448
32 CoreFoundation 0x00007fff8f30b4dc __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12
33 CoreFoundation 0x00007fff8f2eadf5 __CFRunLoopDoBlocks + 341
34 CoreFoundation 0x00007fff8f2eab5b __CFRunLoopRun + 2347
35 CoreFoundation 0x00007fff8f2e9fc8 CFRunLoopRunSpecific + 296
36 HIToolbox 0x00007fff86193d55 RunCurrentEventLoopInMode + 235
37 HIToolbox 0x00007fff86193b8f ReceiveNextEventCommon + 432
38 HIToolbox 0x00007fff861939cf _BlockUntilNextEventMatchingListInModeWithFilter + 71
39 AppKit 0x00007fff87e01d96 _DPSNextEvent + 1067
40 AppKit 0x00007fff87e011c5 -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
41 ViewBridge 0x00007fff917f6c11 -[NSViewServiceApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 73
42 AppKit 0x00007fff87df5d28 -[NSApplication run] + 682
43 AppKit 0x00007fff87dbefbe NSApplicationMain + 1176
44 libxpc.dylib 0x00007fff91ee24f2 _xpc_objc_main + 793
45 libxpc.dylib 0x00007fff91ee0f1e xpc_main + 494
46 ViewBridge 0x00007fff9181c7b7 xpc_connection_handler + 0
47 ViewBridge 0x00007fff917faac9 NSViewServiceApplicationMain + 2818
48 com.apple.appkit.xpc.openAndSavePanelService 0x00000001087996ec main + 208
49 libdyld.dylib 0x00007fff896d85ad start + 1
50 ??? 0x0000000000000001 0x0 + 1
);
name = NSInternalInconsistencyException;
reason = "+[NSOpenAndSavePanelService loadViewToService:isOpenPanel:appCentric:] : failed entitlements check";
userInfo = "<null>";
}' with backtrace (
0 CoreFoundation 0x904a2c19 __raiseError + 201
1 libobjc.A.dylib 0x99387f11 objc_exception_throw + 276
2 ViewBridge 0x981b5cff __62-[NSRemoteViewBase advanceToConfigPhase:awaitingWindowRights:]_block_invoke + 0
3 ViewBridge 0x981b4518 -[NSRemoteViewBase advanceToConfigPhase] + 49
4 ViewBridge 0x981b6645 -[NSRemoteViewBase viewServiceMarshalProxy:withDetailedErrorHandler:] + 228
5 ViewBridge 0x981b6ace -[NSRemoteViewBase viewServiceMarshalProxy:withErrorHandler:] + 109
6 ViewBridge 0x981b62ce -[NSRemoteViewBase viewServiceMarshalProxy:] + 48
7 ViewBridge 0x981a88b5 -[NSRemoteViewBase bridge] + 255
8 AppKit 0x94e7e03c -[NSVBSavePanel init] + 689
9 AppKit 0x94e7dcfd +[NSSavePanel newRemotePanel] + 357
10 AppKit 0x94e7d94f +[NSSavePanel _crunchyRawUnbonedPanel] + 108
11 AppKit 0x94e7d8de +[NSOpenPanel openPanel] + 33
12 Desktops 0x000c7935 -[TDesktopInfoController choosePicture:] + 101
13 libobjc.A.dylib 0x993819e4 -[NSObject performSelector:withObject:] + 70
14 AppKit 0x94e7d556 __36-[NSApplication sendAction:to:from:]_block_invoke + 51
15 libsystem_trace.dylib 0x9a8b13c9 _os_activity_initiate + 85
16 AppKit 0x94e7d477 -[NSApplication sendAction:to:from:] + 610
17 AppKit 0x94e90e69 -[NSControl sendAction:to:] + 102
18 AppKit 0x94e90d5d __26-[NSCell _sendActionFrom:]_block_invoke + 176
19 libsystem_trace.dylib 0x9a8b13c9 _os_activity_initiate + 85
20 AppKit 0x94e90c8c -[NSCell _sendActionFrom:] + 161
21 AppKit 0x950ed08d __48-[NSCell trackMouse:inRect:ofView:untilMouseUp:]_block_invoke1010 + 43
22 libsystem_trace.dylib 0x9a8b13c9 _os_activity_initiate + 85
23 AppKit 0x94e8f039 -[NSCell trackMouse:inRect:ofView:untilMouseUp:] + 2744
24 AppKit 0x94edb64b -[NSButtonCell trackMouse:inRect:ofView:untilMouseUp:] + 809
25 AppKit 0x94e8d668 -[NSControl mouseDown:] + 693
26 AppKit 0x9547abff -[NSWindow _handleMouseDownEvent:isDelayedEvent:] + 6266
27 AppKit 0x9547c406 -[NSWindow _reallySendEvent:isDelayedEvent:] + 2303
28 AppKit 0x94e1971f -[NSWindow sendEvent:] + 567
29 AppKit 0x94d94bf2 -[NSApplication sendEvent:] + 2919
30 AppKit 0x94be807b -[NSApplication run] + 1159
31 AppKit 0x94bae6a4 NSApplicationMain + 1630
32 Desktops 0x0007b27e +[TAppController Main] + 46
33 Desktops 0x00011f7a PASCALMAIN + 90
34 Desktops 0x00011f10 main + 32
35 Desktops 0x00011ecd start + 253
36 Desktops 0x00011df8 start + 40
)
855
I ran aground in this too. The problem ended up being that my app lacked the necessary entitlements provisioned to allow this operation.
In your project settings, under App Sandbox > File Access > User Selected File and select Read/Write.
197
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