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// Copyright 2023 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <future>
#include <objc/message.h>
#include "common/apple_authorization.h"
#include "common/logging/log.h"
namespace AppleAuthorization {
// Bindings to Objective-C APIs
using NSString = void;
using AVMediaType = NSString*;
enum AVAuthorizationStatus : int {
AVAuthorizationStatusNotDetermined = 0,
AVAuthorizationStatusRestricted,
AVAuthorizationStatusDenied,
AVAuthorizationStatusAuthorized,
};
typedef NSString* (*send_stringWithUTF8String)(Class, SEL, const char*);
typedef AVAuthorizationStatus (*send_authorizationStatusForMediaType)(Class, SEL, AVMediaType);
typedef void (*send_requestAccessForMediaType_completionHandler)(Class, SEL, AVMediaType,
void (^callback)(bool));
NSString* StringToNSString(const std::string_view string) {
return reinterpret_cast<send_stringWithUTF8String>(objc_msgSend)(
objc_getClass("NSString"), sel_registerName("stringWithUTF8String:"), string.data());
}
AVAuthorizationStatus GetAuthorizationStatus(AVMediaType media_type) {
return reinterpret_cast<send_authorizationStatusForMediaType>(objc_msgSend)(
objc_getClass("AVCaptureDevice"), sel_registerName("authorizationStatusForMediaType:"),
media_type);
}
void RequestAccess(AVMediaType media_type, void (^callback)(bool)) {
reinterpret_cast<send_requestAccessForMediaType_completionHandler>(objc_msgSend)(
objc_getClass("AVCaptureDevice"),
sel_registerName("requestAccessForMediaType:completionHandler:"), media_type, callback);
}
static AVMediaType AVMediaTypeAudio = StringToNSString("soun");
static AVMediaType AVMediaTypeVideo = StringToNSString("vide");
// Authorization Logic
bool CheckAuthorization(AVMediaType type, const std::string_view& type_name) {
switch (GetAuthorizationStatus(type)) {
case AVAuthorizationStatusNotDetermined: {
LOG_INFO(Frontend, "Requesting {} permission.", type_name);
__block std::promise<bool> authorization_promise;
std::future<bool> authorization_future = authorization_promise.get_future();
RequestAccess(type, ^(bool granted) {
LOG_INFO(Frontend, "{} permission request result: {}", type_name, granted);
authorization_promise.set_value(granted);
});
return authorization_future.get();
}
case AVAuthorizationStatusAuthorized:
return true;
case AVAuthorizationStatusDenied:
LOG_WARNING(Frontend,
"{} permission has been denied and must be enabled via System Settings.",
type_name);
return false;
case AVAuthorizationStatusRestricted:
LOG_WARNING(Frontend, "{} permission is restricted by the system.", type_name);
return false;
}
}
bool CheckAuthorizationForCamera() {
return CheckAuthorization(AVMediaTypeVideo, "Camera");
}
bool CheckAuthorizationForMicrophone() {
return CheckAuthorization(AVMediaTypeAudio, "Microphone");
}
} // namespace AppleAuthorization
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