Mac OS X网络接口

Posted 2021-02-26

Returns an array with the names of the network interfaces (en0, en1, fw0, etc)
Link to the IOKit framework

#import <IOKit/IOKitLib.h>
#import <IOKit/network/IONetworkInterface.h>  
 
+ (NSArray*)networkInterfaces {
	CFMutableDictionaryRef  match;
	NSMutableArray          *arr = [NSMutableArray arrayWithCapacity:3];;
	io_iterator_t           iter;
	io_registry_entry_t     iface;
 
	match = ioserviceMatching(kIONetworkInterfaceClass);
	IOServiceGetMatchingServices(kIOMasterPortDefault, match, &iter);
 
	while (iface = IOIteratorNext(iter)) {
		CFTypeRef	ifNamePrefix, ifUnit;
		ifNamePrefix = IORegistryEntryCreateCFProperty(iface, CFSTR(kIOInterfaceNamePrefix), kCFAllocatorDefault, 0);
		ifUnit = IORegistryEntryCreateCFProperty(iface, CFSTR(kIOInterfaceUnit), kCFAllocatorDefault, 0);
		[arr addObject:[NSString stringWithFormat:@"%@%@", ifNamePrefix, ifUnit]];
        CFRelease(ifNamePrefix);
        CFRelease(ifUnit);
		IOObjectRelease(iface);
	}
	IOObjectRelease(iter);
	return arr;
}