gistfile1.h

#include <IOKit/IOKitLib.h>
#include <stdint.h>
#include <sys/signal.h>

IONotificationPortRef muxNotifyPort = NULL;
io_object_t muxNotification = NULL;

void interupt(int signal) {
	printf("Interupted\n");
	IONotificationPortDestroy(muxNotifyPort);
	IOObjectRelease(muxNotification);
}

void muxCallback(void *refCon, io_iterator_t iterator) {
	printf("Device connection\n");
}

int startUSBMux() {
	CFMutableDictionaryRef matching;
	io_service_t muxService;
	
	matching = IOServiceMatching("AppleUSBDeviceMux");
	if(!matching) {
		printf("Failed to create matching dictionary\n");
		return -1;
	}
	
	muxService = IOServiceGetMatchingService(kIOMasterPortDefault, matching);
	if(!muxService) {
		printf("Failed to get AppleUSBDeviceMux service\n");
		return -1;
	}
	
	muxNotifyPort = IONotificationPortCreate(kIOMasterPortDefault);
	
	CFRunLoopAddSource(CFRunLoopGetCurrent(), IONotificationPortGetRunLoopSource(muxNotifyPort), kCFRunLoopDefaultMode);
	if(IOServiceAddInterestNotification(muxNotifyPort, muxService, "IOGeneralInterest", muxCallback, NULL, &muxNotification) != KERN_SUCCESS) {
		printf("Failed to register for mux notifications\n");
		IOObjectRelease(muxService);
		IONotificationPortDestroy(muxNotifyPort);
		return -1;
	}
	
	uint32_t speed;
	CFTypeRef muxSpeed = IORegistryEntryCreateCFProperty((io_registry_entry_t)muxService, CFSTR("speed"), kCFAllocatorDefault, 0);
	if(!muxSpeed || (CFGetTypeID(muxSpeed) != CFNumberGetTypeID())) {
		printf("Mux speed property is retarded\n");
	} else {
		CFNumberGetValue((CFNumberRef)muxSpeed, kCFNumberSInt32Type, &speed);
		CFRelease(muxSpeed);
	}
	
	return 0;
}

int main() {
	signal(SIGINT, interupt);
	if(!startUSBMux()) {
		CFRunLoopRun();
	}
	
	printf("Failed\n");
	return -1;
}