When you're application is sandboxed, it has access to documents within the
sandbox -- period.
If you display an open dialog, you can ask the user for a file/folder (and by
inference, permission to access that file/folder).
There used to be a way to denote a specific file/files to be able to access,
but I don't recall if that's been turned off or not.
--
Glenn L. Austin, Computer Wizard, AustinSoft.com
> On Apr 12, 2018, at 5:03 PM, Joel Norvell <framewor...@fastmail.com> wrote:
>
> Hi Cocoa-dev People,
>
> I have a sandboxing question, below. I'm wondering if it's even possible to
> do what I tried to do, and if so, how?
>
> Thanks,
> Joel Norvell
>
>
> I'm trying to iterate directories in a sandboxed app in order to find a file
> with a specific extension.
>
> I believe I have all the entitlements that are available that might help:
>
> App Sandbox
> com.apple.security.files.downloads.read-write
> com.apple.security.files.user-selected.read-write
> com.apple.security.print
> com.apple.security.temporary-exception.files.home-relative-path.read-write
> com.apple.security.temporary-exception.files.absolute-path.read-write
>
> I need to be able to find a file, by name, that could either be on the
> Desktop or in the (real) Documents folder. I don't even get close. I get a
> filecoordinationd when I try to iterate either of them (code below). I am
> able to find a file, by name, in the Downloads folder, though.
>
> Has anyone been able to do this with the Desktop folder or the (real)
> Documents folder? (When I used NSDocumentDirectory it looked in the Documents
> folder attached to my container. I could find things that were in that. But
> it wasn't the same as the Documents folder that the user sees.)
>
> If I turn off Sandboxing I have no problem iterating Desktop or Documents.
>
> This is the code I used to test iterating in three NSSearchPathDirectories:
> NSDocumentDirectory, NSDesktopDirectory, and NSDownloadsDirectory.
>
> NSFileManager* fm = [NSFileManager new];
> NSError* err = nil;
> NSURL* rootDirURL =
> [fm URLForDirectory:NSDesktopDirectory
> inDomain:NSUserDomainMask appropriateForURL:nil
> create:NO error:&err];
> // error-checking omitted
>
> NSURL * theFormsFolderURL = [self formsFolderURL:rootDirURL];
>
> - (NSURL *) formsFolderURL:(NSURL *)rootDirURL
> {
> NSFileManager * fm = [NSFileManager defaultManager];
>
> NSDirectoryEnumerator* dir = [fm enumeratorAtURL:rootDirURL
> includingPropertiesForKeys:nil
> options:0 errorHandler:nil];
>
> for (NSURL* f in dir)
> {
> if ([[f pathExtension] isEqualToString:@"pdq"])
> {
> NSLog(@"%@", [f lastPathComponent]);
> }
> }
>
> return nil; // Dummy nil
> }
>
> BTW, this was the value that gave me a filecoordinationd for Desktop:
> rootDirURL NSURL *
> @"file:///Users/joely/Library/Containers/biz.pdqforms.pdqforms/Data/Desktop/"
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