[PostProcessBuild] UnauthorizedAccessException when trying to add AppGroups capability

I'm using the iOS AppGroups capability on my project, and I'm trying to automatize my Xcode projects settings with a PostProcessBuild method.

The PBXProject's method "AddCapability" works well, but it is useless because it can't set the group name used by my app.

I tried the ProjectCapabilityManager class, but I got some trouble with it.
By executing the following code in my PostProcessBuild method, I get a "UnauthorizedAccessException" on the xcodeproj file/folder

Code (CSharp):

1. ProjectCapabilityManager proCapabilitiesManager = new ProjectCapabilityManager(pathToBuiltProject + "/Unity-iPhone.xcodeproj", "iphone.entitlement", "Unity-iPhone");
2. proCapabilitiesManager.AddAppGroups(new [] {"my.group.id"});
3. proCapabilitiesManager.WriteToFile();

Do you have any idea what I can have done wrong ?

 

By the way, I'm using Unity 2017.2.0f3

 

I have this too. BTW based on the documantation
https://docs.unity3d.com/2017.1/Doc.../iOS.Xcode.ProjectCapabilityManager-ctor.html
your not supposed to append the "/Unity-iPhone.xcodeproj/project.pbxproj" part to the path, but it looks like you must.

The problem seems to be in that the manager can't handle entitlement file name with the "Unity-iPhone" path component. If you remove that, the build succeeds, but then the project file contains incorrect reference to a nonexisting file at Unity-iPhone directory.

 

I had the same problem and this seems to at least work partially (game center capability doesn't get added, the others do):

Code (CSharp):

1. public void OnPostprocessBuild(BuildTarget target, string path)
2.     {
3.         if (target != BuildTarget.iOS) return;
4.         string pbxPath = PBXProject.GetPBXProjectPath(path);
5.         var capManager = new ProjectCapabilityManager(pbxPath, "ios.entitlements", "Unity-iPhone");
6.         capManager.AddGameCenter();
7.         capManager.AddInAppPurchase();
8.         capManager.AddKeychainSharing(new string[] { "$(AppIdentifierPrefix)com.my.appid" });
9.         capManager.AddPushNotifications(false);
10.         capManager.WriteToFile();
11.     }

 

Hello there, using Unity 2019.2.20f1 here.

Im trying to do 2 simple things in the OnPostprocessBuild event:
1st: - Add SignInWithApple capability to the Xcode project.
2nd: - Set AuthenticationServices.framework as optional.

Can't do any of those, I tried with the example in the thread and it doesn't work, doesn't throw any exception either.

Also tried with this script I found on Github:

Code (CSharp):

1. //APPLE SIGN IN
2.  
3.         var projectPath = PBXProject.GetPBXProjectPath(pathToBuiltProject);
4.     #if UNITY_2019_3_OR_NEWER
5.             var project = new PBXProject();
6.             project.ReadFromString(System.IO.File.ReadAllText(projectPath));
7.             var manager = new ProjectCapabilityManager(projectPath, "Entitlements.entitlements", targetGuid: project.GetUnityMainTargetGuid());
8. #else
9.         var manager = new ProjectCapabilityManager(projectPath, "Entitlements.entitlements", PBXProject.GetUnityTargetName());
10. #endif
11.         manager.AddSignInWithApple();
12.         manager.WriteToFile();

And doesn't work either.

Also found this code for the framework modification:

Code (CSharp):

1. PBXProject proj = new PBXProject();
2.         string pbxFilename = pathToBuiltProject + "/Unity-iPhone.xcodeproj/project.pbxproj";
3.         proj.ReadFromFile (pbxFilename);
4.         string targetName = PBXProject.GetUnityTargetName ();
5.         string guid = proj.TargetGuidByName (targetName);
6.         proj.AddFrameworkToProject(guid, "AuthenticationServices.framework", true);

Where true/false is supposed to be if you want it optional or not.

Tried also this for removing the existing AuthenticationServices framework:

Code (CSharp):

1. proj.RemoveFrameworkFromProject("AuthenticationServices.framework",);

But didnt work either.

Anybody ? Im starting to get desperate
Thanks

 

This is the solution for Unity 2018.4.22f1.

Code (CSharp):

1. using UnityEditor;
2. using UnityEditor.Build;
3. using UnityEditor.Build.Reporting;
4. using UnityEditor.iOS.Xcode;
5.  
6. public class CapabilityAdder : IPostprocessBuildWithReport
7. {
8.     public int callbackOrder => 0;
9.  
10.     public void OnPostprocessBuild(BuildReport report)
11.     {
12.         BuildTarget buildTarget = report.summary.platform;
13.         string path = report.summary.outputPath;
14.  
15.         if (buildTarget != BuildTarget.iOS)
16.             return;
17.      
18.         string projPath = PBXProject.GetPBXProjectPath(path);
19.  
20.         PBXProject proj = new PBXProject();
21.         proj.ReadFromFile(projPath);
22.  
23.         ProjectCapabilityManager manager = new ProjectCapabilityManager(
24.             projPath,
25.             "Entitlements.entitlements",
26.             PBXProject.GetUnityTargetName()
27.         );
28.  
29.         manager.AddInAppPurchase();
30.         manager.AddPushNotifications(false);
31.  
32.         manager.WriteToFile();
33.     }
34. }

 

Can't add the AddKeychainSharing no matter which of the approach I try, I'm using Unity 2121.3.23f1 , anybody having the same problem?