Re: Non-sandboxed Cocoa app accessing current user preferences using NSTask fails when launched outside Xcode.
Re: Non-sandboxed Cocoa app accessing current user preferences using NSTask fails when launched outside Xcode.
- Subject: Re: Non-sandboxed Cocoa app accessing current user preferences using NSTask fails when launched outside Xcode.
- From: Public <email@hidden>
- Date: Sat, 27 Jul 2013 11:35:08 +0800
Thanks Scott and Jens for sharing your thoughts.
I didn't set up entitlements (yet), but when launched from within Xcode, my (non-sandboxed Cocoa) app was able to read and clear ~/Library/Preferences/com.apple.LaunchServices.QuarantineEventsV2 created by system. However, when launched from Finder, the app launches and doesn't do anything — I'm checking the console log file (my thanks to Todd Haberlein for the tip) and also developing an alternative approach using sqlite and 3rd party wrappers (my thanks to Jerry Krinock, Robert Martin, and Jens Alfke for suggesting).
This experience has definitely piqued my curiosity about the difference in "access rights" of an app launched from within Xcode. I would expect difference in app behavior for an iOS app launched on device versus simulator, but am baffled by the difference in behavior of launching the same OS X app in Xcode versus from the Finder.
Thanks to everyone from sharing, I'm still exploring and welcome any other suggestion.
- Chris
On Jul 27, 2013, at 5:26 AM, Scott Ribe <email@hidden> wrote:
> On Jul 26, 2013, at 1:36 PM, Jens Alfke <email@hidden> wrote:
>
>> I've never worked with sandboxing, but I would guess that a sandboxed app can't access arbitrary files in ~/Library/Preferences, but instead has to go through NSUserDefaults.
>
> Don't know about iOS, but at least on OS X you can do this, depending on the definition of arbitrary. In other words, you can set up entitlements to specific files in preferences that are not named by your bundle identifier, as would be necessary for shared preferences between a suite of apps. But of course you can't give yourself an entitlement to ~/Library/Preferences and then wander through the whole directory.
>
> --
> Scott Ribe
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