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audio deactivation detection

This commit is contained in:
Patrick Wardle 2021-05-05 16:42:49 -07:00
parent 29bfd650d5
commit 9863b10f4e
3 changed files with 133 additions and 45 deletions
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174
Application/Application/AVMonitor.m
View File

@ -504,6 +504,9 @@ extern os_log_t logHandle;
{
//dbg msg
os_log_debug(logHandle, "starting audio monitor");
//built in mic
AudioObjectID builtInMic = 0;
//msg count
// used to correlate msgs
@ -514,8 +517,22 @@ extern os_log_t logHandle;
//init regex
regex = [NSRegularExpression regularExpressionWithPattern:@"pid:(\\d*)," options:0 error:nil];
//start logging
//find built-in mic
builtInMic = [self findBuiltInMic];
if(0 != builtInMic)
{
//start (device) monitor
[self watchAudio:builtInMic];
}
//error :/
else
{
//err msg
os_log_error(logHandle, "ERROR: failed to find built-in mic");
}
//start audio-related log monitoring
// looking for tccd access msgs from coreaudio
[self.audioLogMonitor start:[NSPredicate predicateWithFormat:@"process == 'coreaudiod' && subsystem == 'com.apple.TCC' && category == 'access'"] level:Log_Level_Info callback:^(OSLogEvent* event) {
@ -628,7 +645,7 @@ extern os_log_t logHandle;
[self generateNotification:Device_Microphone state:NSControlStateValueOn client:client];
//execute action
[self executeUserAction:Device_Microphone state:NSControlStateValueOn client:nil];
[self executeUserAction:Device_Microphone state:NSControlStateValueOn client:client];
});
}
@ -659,7 +676,7 @@ extern os_log_t logHandle;
for(AVCaptureDevice* currentCamera in [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo])
{
//dbg msg
os_log_debug(logHandle, "device: %@/%@", currentCamera.manufacturer, currentCamera.localizedName);
os_log_debug(logHandle, "device: %{public}@/%{public}@", currentCamera.manufacturer, currentCamera.localizedName);
//sanity check
// make sure is has private 'connectionID' iVar
@ -685,7 +702,7 @@ extern os_log_t logHandle;
if(NSControlStateValueOn == [self getCameraStatus:connectionID])
{
//dbg msg
os_log_debug(logHandle, "device: %@/%@, is on!", currentCamera.manufacturer, currentCamera.localizedName);
os_log_debug(logHandle, "device: %{public}@/%{public}@, is on!", currentCamera.manufacturer, currentCamera.localizedName);
//set
cameraOn = YES;
@ -700,21 +717,15 @@ bail:
return cameraOn;
}
//is (any) camera on?
-(BOOL)isMicOn
//get built-in mic
-(AudioObjectID)findBuiltInMic
{
//flag
BOOL isMicOn = NO;
//mic
AudioObjectID builtInMic = 0;
//selector for getting device id
SEL methodSelector = nil;
//device's connection id
unsigned int connectionID = 0;
//dbg msg
os_log_debug(logHandle, "checking if built-in mic is active");
//init selector
methodSelector = NSSelectorFromString(@"connectionID");
@ -722,15 +733,10 @@ bail:
for(AVCaptureDevice* currentMic in [AVCaptureDevice devicesWithMediaType:AVMediaTypeAudio])
{
//dbg msg
os_log_debug(logHandle, "device: %@/%@", currentMic.manufacturer, currentMic.localizedName);
os_log_debug(logHandle, "device: %{public}@/%{public}@", currentMic.manufacturer, currentMic.localizedName);
//sanity check
// make sure is has private 'connectionID' iVar
if(YES != [currentMic respondsToSelector:methodSelector])
{
//skip
continue;
}
if(YES != [currentMic respondsToSelector:methodSelector]) continue;
//check if apple
// also check input source
@ -738,35 +744,119 @@ bail:
(YES == [[[currentMic activeInputSource] inputSourceID] isEqualToString:@"imic"]) )
{
//ignore leak warning
// ->we know what we're doing via this 'performSelector'
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
//grab connection ID
connectionID = (unsigned int)[currentMic performSelector:NSSelectorFromString(@"connectionID") withObject:nil];
builtInMic = (unsigned int)[currentMic performSelector:methodSelector withObject:nil];
//restore
#pragma clang diagnostic pop
//get state
// is mic on?
if(NSControlStateValueOn == [self getMicState:connectionID])
{
//dbg msg
os_log_debug(logHandle, "device: %@/%@, is on!", currentMic.manufacturer, currentMic.localizedName);
//set
isMicOn = YES;
//done
break;
}
//done
break;
}
}
return builtInMic;
}
//is built-in mic on?
-(BOOL)isMicOn
{
//flag
BOOL isMicOn = NO;
//mic's ID
AudioObjectID builtInMic = 0;
//dbg msg
os_log_debug(logHandle, "checking if built-in mic is active");
//find mic
builtInMic = [self findBuiltInMic];
if( (0 != builtInMic) &&
(NSControlStateValueOn == [self getMicState:builtInMic]) )
{
//dbg msg
os_log_debug(logHandle, "built-in mic is on");
//set
isMicOn = YES;
}
return isMicOn;
}
//register for audio notifcations
// ...only care about mic deactivation request
-(BOOL)watchAudio:(AudioObjectID)builtInMic
{
//ret var
BOOL bRegistered = NO;
//status var
OSStatus status = -1;
//property struct
AudioObjectPropertyAddress propertyStruct = {0};
//init property struct's selector
propertyStruct.mSelector = kAudioDevicePropertyDeviceIsRunningSomewhere;
//init property struct's scope
propertyStruct.mScope = kAudioObjectPropertyScopeGlobal;
//init property struct's element
propertyStruct.mElement = kAudioObjectPropertyElementMaster;
//block
// invoked when audio changes
AudioObjectPropertyListenerBlock listenerBlock = ^(UInt32 inNumberAddresses, const AudioObjectPropertyAddress *inAddresses)
{
//state
NSInteger state = -1;
//get state
state = [self getMicState:builtInMic];
//dbg msg
os_log_debug(logHandle, "built in mic changed state to %ld", (long)state);
//mic off?
if(NSControlStateValueOff == state)
{
//dbg msg
os_log_debug(logHandle, "built in mic turned to off");
//show notification
[self generateNotification:Device_Microphone state:NSControlStateValueOff client:nil];
//execute action
[self executeUserAction:Device_Microphone state:NSControlStateValueOn client:nil];
}
};
//add property listener for audio changes
status = AudioObjectAddPropertyListenerBlock(builtInMic, &propertyStruct, dispatch_get_main_queue(), listenerBlock);
if(noErr != status)
{
//err msg
os_log_error(logHandle, "ERROR: AudioObjectAddPropertyListenerBlock() failed with %d", status);
//bail
goto bail;
}
//happy
bRegistered = YES;
bail:
return bRegistered;
}
//determine if audio device is active
-(UInt32)getMicState:(AudioObjectID)deviceID
{
@ -774,7 +864,7 @@ bail:
OSStatus status = -1;
//running flag
UInt32 isRunning = -1;
UInt32 isRunning = 0;
//size of query flag
UInt32 propertySize = 0;
@ -801,8 +891,6 @@ bail:
return isRunning;
}
//check if a specified video is active
// note: on M1 this always says 'on' (smh apple)
-(UInt32)getCameraStatus:(CMIODeviceID)deviceID
@ -811,7 +899,7 @@ bail:
OSStatus status = -1;
//running flag
UInt32 isRunning = -1;
UInt32 isRunning = 0;
//size of query flag
UInt32 propertySize = 0;

2
Application/Application/Update.m
View File

@ -95,7 +95,7 @@ extern os_log_t logHandle;
latestVersion = [[productsVersionDictionary objectForKey:@"OverSight"] objectForKey:@"version"];
//dbg msg
os_log_debug(logHandle, "latest version: %@", latestVersion);
os_log_debug(logHandle, "latest version: %{public}@", latestVersion);
bail:

2
Shared/Utilities.m
View File

@ -1141,7 +1141,7 @@ BOOL toggleLoginItem(NSURL* loginItem, int toggleFlag)
if(YES == alreadyAdded)
{
//dbg msg
os_log_debug(logHandle, "%@ already exists as a login item", loginItem);
os_log_debug(logHandle, "%{public}@ already exists as a login item", loginItem);
//happy
wasToggled = YES;