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/* $Id: DrvHostAudioCoreAudioAuth.mm $ */
/** @file
* Host audio driver - Mac OS X CoreAudio, authorization helpers for Mojave+.
*/
/*
* Copyright (C) 2020-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define LOG_GROUP LOG_GROUP_DRV_HOST_AUDIO
#include <VBox/log.h>
#include <iprt/errcore.h>
#include <iprt/semaphore.h>
#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
# import <AVFoundation/AVFoundation.h>
# import <AVFoundation/AVMediaFormat.h>
#endif
#import <Foundation/NSException.h>
#if MAC_OS_X_VERSION_MIN_REQUIRED < 101400
/* HACK ALERT! It's there in the 10.13 SDK, but only for iOS 7.0+. Deploying CPP trickery to shut up warnings/errors. */
# if MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
# define AVAuthorizationStatus OurAVAuthorizationStatus
# define AVAuthorizationStatusNotDetermined OurAVAuthorizationStatusNotDetermined
# define AVAuthorizationStatusRestricted OurAVAuthorizationStatusRestricted
# define AVAuthorizationStatusDenied OurAVAuthorizationStatusDenied
# define AVAuthorizationStatusAuthorized OurAVAuthorizationStatusAuthorized
# endif
/**
* The authorization status enum.
*
* Starting macOS 10.14 we need to request permissions in order to use any audio input device
* but as we build against an older SDK where this is not available we have to duplicate
* AVAuthorizationStatus and do everything dynmically during runtime, sigh...
*/
typedef enum AVAuthorizationStatus
# if RT_CPLUSPLUS_PREREQ(201100)
: NSInteger
# endif
{
AVAuthorizationStatusNotDetermined = 0,
AVAuthorizationStatusRestricted = 1,
AVAuthorizationStatusDenied = 2,
AVAuthorizationStatusAuthorized = 3
} AVAuthorizationStatus;
#endif
#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070 /** @todo need some better fix/whatever for AudioTest */
/**
* Requests camera permissions for Mojave and onwards.
*
* @returns VBox status code.
*/
static int coreAudioInputPermissionRequest(void)
{
__block RTSEMEVENT hEvt = NIL_RTSEMEVENT;
__block int rc = RTSemEventCreate(&hEvt);
if (RT_SUCCESS(rc))
{
/* Perform auth request. */
[AVCaptureDevice performSelector: @selector(requestAccessForMediaType: completionHandler:)
withObject: (id)AVMediaTypeAudio
withObject: (id)^(BOOL granted)
{
if (!granted)
{
LogRel(("CoreAudio: Access denied!\n"));
rc = VERR_ACCESS_DENIED;
}
RTSemEventSignal(hEvt);
}];
rc = RTSemEventWait(hEvt, RT_MS_10SEC);
RTSemEventDestroy(hEvt);
}
return rc;
}
#endif
/**
* Checks permission for capturing devices on Mojave and onwards.
*
* @returns VBox status code.
*/
DECLHIDDEN(int) coreAudioInputPermissionCheck(void)
{
int rc = VINF_SUCCESS;
if (NSFoundationVersionNumber >= 10.14)
{
/*
* Because we build with an older SDK where the authorization APIs are not available
* (introduced with Mojave 10.14) we have to resort to resolving the APIs dynamically.
*/
#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070 /** @todo need some better fix/whatever for AudioTest */
LogRel(("CoreAudio: macOS 10.14+ detected, checking audio input permissions\n"));
if ([AVCaptureDevice respondsToSelector:@selector(authorizationStatusForMediaType:)])
{
AVAuthorizationStatus enmAuthSts
= (AVAuthorizationStatus)(NSInteger)[AVCaptureDevice performSelector: @selector(authorizationStatusForMediaType:)
withObject: (id)AVMediaTypeAudio];
if (enmAuthSts == AVAuthorizationStatusNotDetermined)
rc = coreAudioInputPermissionRequest();
else if ( enmAuthSts == AVAuthorizationStatusRestricted
|| enmAuthSts == AVAuthorizationStatusDenied)
{
LogRel(("CoreAudio: Access denied!\n"));
rc = VERR_ACCESS_DENIED;
}
}
#else
LogRel(("CoreAudio: WARNING! macOS 10.14+ detected. Audio input probably wont work as this app was compiled using a too old SDK.\n"));
#endif
}
return rc;
}
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