xref: /expo/ios/Exponent/Versioned/Core/UniversalModules/EXScopedFileSystem/EXScopedFilePermissionModule.m (revision 51e273e0)

// Copyright 2015-present 650 Industries. All rights reserved.

#if __has_include(<ExpoFileSystem/EXFilePermissionModule.h>)
#import "EXScopedFilePermissionModule.h"
#import <ExpoModulesCore/EXFileSystemInterface.h>

@interface EXFilePermissionModule (Protected)

- (EXFileSystemPermissionFlags)getExternalPathPermissions:(NSString *)path;

@end

@interface EXScopedFilePermissionModule ()

@property (nonatomic, assign) BOOL isDetached;

@end

@implementation EXScopedFilePermissionModule

- (instancetype)initWithConstantsBinding:(EXConstantsBinding *)constantsBinding
{
  if (self = [super init]) {
    _isDetached = ![constantsBinding.appOwnership isEqualToString:@"expo"];
  }
  return self;
}

- (EXFileSystemPermissionFlags)getExternalPathPermissions:(NSString *)path
{
  // may block access to external paths which contain "ExponentExperienceData"
  if (![self shouldForbidAccessToExternalDirectories] || (![path containsString:@"ExponentExperienceData"])) {
    return [super getExternalPathPermissions:path];
  }
  return EXFileSystemPermissionNone;
}

- (BOOL)shouldForbidAccessToExternalDirectories {
  return !_isDetached;
}

@end
#endif