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ImportantIn some instances you might need to download the new Provisioning Profile from Apple's Developer Portal directly and double-click it to install. You might also need to stop and restart Visual Studio for Mac before it will be able to access the new profile.Next, we need to load the new App ID and Profile on the development machine. Let's do the following:.Start Xcode and select Preferences from the Xcode menu:.Click on the View Details. Button:.Click on the Refresh button (in the lower left hand corner).Click on the Done button.Next, we need to select the new App ID and Provisioning Profile in our Xamarin.Mac project.
Let's do the following:.In the Solution Pad, double-click the Info.plist file to open it for editing.Ensure that the Bundle Identifier matches our App ID we created above (example: com.appracatappra.MacSandbox):.Next, double-click the Entitlements.plist file and ensure our iCloud Key-Value Store and the iCloud Containers all match our App ID we created above (example: com.appracatappra.MacSandbox):.Save your changes.In the Solution Pad, double-click the project file to open its Options for editing:.Select Mac Signing, then check Sign the application bundle and Sign the installer package. Under Provisioning profile, select the one we created above:.Click the Done button. ImportantYou might have to quit and restart Visual Studio for Mac to get it to recognize the new App ID and Provisioning Profile that was installed by Xcode. Troubleshooting provisioning issuesAt this point you should try to run the application and make sure that everything is signed and provisioned correctly. If the app still runs as before, everything is good.
Bare Bones Software has released a big update to BBEdit, the HTML and text editor for the Mac. Starting with today’s version 12.6 release, BBEdit is now a sandboxed app. The security update. Sandboxing restricts the access of an application to system resources and is one way that Apple ensures that apps are safe and do not contain any malware. You must sandbox your macOS applications if you want to submit them to the Mac App Store. This topic describes how to sandbox your macOS applications using the RAD Studio IDE.
In the event of a failure, you might get a dialog box like the following one:Here are the most common causes of provisioning and signing issues:. The App Bundle ID doesn't match the App ID of the selected profile. The Developer ID doesn't match the Developer ID of the selected profile. The UUID of the Mac being tested on isn't registered as part of the selected profile.In the case of an issue, correct the problem on the Apple Developer Portal, refresh the profiles in Xcode and do a clean build in Visual Studio for Mac. Enable the App SandboxYou enable the App Sandbox by selecting a checkbox in your projects options. Do the following:.In the Solution Pad, double-click the Entitlements.plist file to open it for editing.Check both Enable Entitlements and Enable App Sandboxing:.Save your changes.At this point, you have enabled the App Sandbox but you have not provided the required network access for the Web View.
ImportantA Document-Scoped Bookmark can only point to a single file and not afolder and that file cannot be in a location used by the system (such as/private or /Library). Using security-scoped bookmarksUsing either type of Security-Scoped Bookmark, requires you to perform the following steps:. Set the appropriate Entitlements in the Xamarin.Mac app that needs to use Security-Scoped Bookmarks - For App-Scoped Bookmarks, set the com.apple.security.files.bookmarks.app-scope Entitlement key to true.
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For Document-Scoped Bookmarks, set the com.apple.security.files.bookmarks.document-scope Entitlement key to true. Create a Security-Scoped Bookmark - You'll do this for any file or folder that the user has provided access to (via NSOpenPanel for example), that the app will need persistent access to. Use the public virtual NSData CreateBookmarkData (NSUrlBookmarkCreationOptions options, string resourceValues, NSUrl relativeUrl, out NSError error) method of the NSUrl class to create the bookmark. Resolve the Security-Scoped Bookmark - When the app needs to access the resource again (for example, after restart) it will need to resolve the bookmark to a security-scoped URL. Use the public static NSUrl FromBookmarkData (NSData data, NSUrlBookmarkResolutionOptions options, NSUrl relativeToUrl, out bool isStale, out NSError error) method of the NSUrl class to resolve the bookmark.
Explicitly notify the System that you want to access to file from the Security-Scoped URL - This step needs to be done immediately after obtaining the Security-Scoped URL above or, when you later want to regain access to the resource after having relinquished your access to it. Call the StartAccessingSecurityScopedResource method of the NSUrl class to start accessing a Security-Scoped URL. Explicitly notify the System that you are done accessing the file from the Security-Scoped URL - As soon as possible, you should inform the System when the app no longer needs access to the file (for example, if the user closes it).
Call the StopAccessingSecurityScopedResource method of the NSUrl class to stop accessing a Security-Scoped URL.After you relinquish access to a resource, you'll need to return to step 4 again to re-establish access. If the Xamarin.Mac app is restarted, you must return to step 3 and re-resolve the bookmark. ImportantFailure to release access to Security-Scoped URL resources will cause a Xamarin.Mac app to leak Kernel resources. As a result, the app will no longer be able to add file system locations to its Container until it is restarted. The App Sandbox and code signingAfter you enable the App Sandbox and enable the specific requirements for your Xamarin.Mac app (via Entitlements), you must code sign the project for the sandboxing to take effect. You must perform code signing because the Entitlements required for App Sandboxing are linked to the app's signature.macOS enforces a link between an app's Container and its code signature, in this way no other application can access that container, even if it is spoofing the apps Bundle ID.
This mechanism works as follows:. When the System creates the app's Container, it sets an Access Control List (ACL) on that Container.
The initial access control entry in the list contains the app’s Designated Requirement (DR), which describes how future versions of the app can be recognized (when it has been upgraded). Each time an app with the same Bundle ID launches, the system checks that the app’s code signature matches the Designated Requirements specified in one of the entries in the container’s ACL. If the system does not find a match, it prevents the app from launching.Code Signing works the following ways:. Before creating the Xamarin.Mac project, obtain a Development Certificate, a Distribution Certificate and a Developer ID Certificate from the Apple Developer Portal. When the Mac App Store distributes the Xamarin.Mac app, it is signed with an Apple code signature.When testing and debugging, you'll be using a version of the Xamarin.Mac application that you signed (which will be used to create the App Container). Later, if you wish to test or install the version from the Apple App Store, it will be signed with the Apple signature and will fail to launch (since it doesn't have the same code signature as the original App Container).
In this situation, you will get a crash report similar to the following: Exception Type: EXCBADINSTRUCTION (SIGILL)To fix this, you'll need to adjust the ACL entry to point to the Apple signed version of the app.For more information on creating and downloading the Provisioning Profiles required for Sandboxing, please see the section above. ImportantYou must not only sandbox the main executable in you app bundle, but also every included helper app or tool in that bundle. This is required for any app distributed from the Mac App Store and, if possible, should be done for any other form of app distribution.For a list of all executable binaries in a Xamarin.Mac app's bundle, type the following command in Terminal: find -H Your-App-Bundle.app -print0 xargs -0 file grep 'Mach-O.executable'Where Your-App-Bundle is the name and path to the application's bundle. Determine whether a Xamarin.Mac app is suitable for sandboxingMost Xamarin.Mac apps are fully compatible with the App Sandbox and therefore, suitable for sandboxing.
If the app requires a behavior that the App Sandbox doesn't allow, you should consider an alternative approach.If your app requires one of the following behaviors, it is incompatible with the App Sandbox:. Authorization Services - With the App Sandbox, you cannot work with the functions described in.
Accessibility APIs - You cannot sandbox assistive apps such as screen readers or apps that control other applications. Send Apple Events to Arbitrary Apps - If the app requires sending Apple events to an unknown, arbitrary app, it cannot be sandboxed.
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