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media / audio / mac / screen_capture_kit_swizzler.mm [blame]
// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "screen_capture_kit_swizzler.h"
#import <Foundation/NSObject.h>
@interface SCStreamManagerSwizzler : NSObject
@end
@implementation SCStreamManagerSwizzler
+ (id)requestUserPermissionForScreenCapture {
// Returning nil indicates that the permission is granted.
return nil;
}
@end
namespace media {
std::unique_ptr<base::apple::ScopedObjCClassSwizzler>
SwizzleScreenCaptureKit() {
if (@available(macOS 13.0, *)) {
// ScreenCaptureKit internally performs a TCC permission check before
// attempting any operations. This requires access to the TCC daemon,
// which we would like to avoid granting to helper processes due to
// security concerns. Skipping this preliminary check is acceptable, as
// permissions are afterward externally checked by system services. To
// do this, we swizzle the private API +[SCStreamManager
// requestUserPermissionForScreenCapture], always returning to the
// caller that the process has permissions.
return std::make_unique<base::apple::ScopedObjCClassSwizzler>(
NSClassFromString(@"SCStreamManager"), [SCStreamManagerSwizzler class],
@selector(requestUserPermissionForScreenCapture));
}
return nullptr;
}
} // namespace media