Load private framework, core service, app, etc

0_usage.mm

void *handler = loadPrivate(@"ChatKit", TypePrivateFramework);
const Class CKGradientViewCls = NSClassFromString(@"CKGradientView");
UIView *const gradientView = [(UIView *)[CKGradientViewCls alloc] initWithFrame:{0, 0, 300, 200}];

1_loader.mm

#import <dlfcn.h>

typedef NS_ENUM(NSInteger, Type) {
  TypePrivateFramework,
  TypeCoreService,
  TypeApplication,
  TypePreferenceBundles,
  TypeControlCenterBundles,
};

static void *loadPrivate(NSString *name, Type type)
{
  NSString *const uiKitPath = [NSBundle bundleForClass:[UIButton class]].bundlePath;

  NSString *containerFolderPath;
  switch (type) {
    case TypePrivateFramework:
      containerFolderPath =
      [uiKitPath
       .stringByDeletingLastPathComponent // Frameworks
       .stringByDeletingLastPathComponent // Library
       stringByAppendingPathComponent:@"PrivateFrameworks"];
      break;
    case TypeControlCenterBundles:
      containerFolderPath =
      [uiKitPath
       .stringByDeletingLastPathComponent // Frameworks
       .stringByDeletingLastPathComponent // Library
       stringByAppendingPathComponent:@"ControlCenter/Bundles"];
      break;
    case TypePreferenceBundles:
      containerFolderPath =
      [uiKitPath
       .stringByDeletingLastPathComponent // Frameworks
       .stringByDeletingLastPathComponent // Library
       stringByAppendingPathComponent:@"PreferenceBundles"];
      break;
    case TypeCoreService:
      containerFolderPath =
      [uiKitPath
       .stringByDeletingLastPathComponent // Frameworks
       .stringByDeletingLastPathComponent // Library
       stringByAppendingPathComponent:@"CoreServices"];
      break;
    case TypeApplication:
      containerFolderPath =
      [uiKitPath
       .stringByDeletingLastPathComponent // Frameworks
       .stringByDeletingLastPathComponent // Library
       .stringByDeletingLastPathComponent // System
       .stringByDeletingLastPathComponent // /
       stringByAppendingPathComponent:@"Applications"];
      break;
  }

  NSArray *const extensionsToTry = @[ @"framework", @"app", @"bundle" ];
  for (NSString *const extension in extensionsToTry) {
    NSString *const binaryPath =
    [[[containerFolderPath
       stringByAppendingPathComponent:name]
      stringByAppendingPathExtension:extension]
     stringByAppendingPathComponent:name];
    void *handler = dlopen([binaryPath cStringUsingEncoding:NSUTF8StringEncoding], RTLD_NOW);
    if (handler) {
      return handler;
    }
  }
  NSCAssert(NO, @"Failed to find %@ of type %tu", name, type);
  return nil;
}

Hey there, is this allowed in AppStore submissions? 🤔