kbunfuck.m

//  kbunfuck.m
//
//  sets keyboard back to normal

#import <Foundation/Foundation.h>
#import <IOKit/hidsystem/IOHIDEventSystemClient.h>
#import <IOKit/hidsystem/IOHIDServiceClient.h>
#import <IOKit/hid/IOHIDUsageTables.h>

int main(int argc, const char * argv[]) {
    
    IOHIDEventSystemClientRef system;
    CFArrayRef services;
    
    NSMutableArray *map = [[NSMutableArray alloc] init];

    for (uint64_t i = 0x04; i < 0xf0; i++) {
        uint64_t ori = i | 0x700000000;
        NSDictionary *code = @{@kIOHIDKeyboardModifierMappingSrcKey:@(ori), @kIOHIDKeyboardModifierMappingDstKey:@(ori)};
        [map addObject: code];
    }
    
    system = IOHIDEventSystemClientCreateSimpleClient(kCFAllocatorDefault);
    services = IOHIDEventSystemClientCopyServices(system);
    
    for(CFIndex i = 0; i < CFArrayGetCount(services); i++) {
        IOHIDServiceClientRef service = (IOHIDServiceClientRef)CFArrayGetValueAtIndex(services, i);
        if(IOHIDServiceClientConformsTo(service, kHIDPage_GenericDesktop, kHIDUsage_GD_Keyboard)) {
            IOHIDServiceClientSetProperty(service, CFSTR(kIOHIDUserKeyUsageMapKey), (CFArrayRef)map);
        }
    }
    
     CFRelease(services);
     CFRelease(system);
    
    return 0;
    
}