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GetPrimaryMACAddress.h
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GetPrimaryMACAddress.h
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#include <stdio.h>
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/network/IOEthernetInterface.h>
#include <IOKit/network/IONetworkInterface.h>
#include <IOKit/network/IOEthernetController.h>
static kern_return_t FindEthernetInterfaces(io_iterator_t *matchingServices);
static kern_return_t GetMACAddress(io_iterator_t intfIterator, UInt8 *MACAddress, UInt8 bufferSize);
@interface GetMacAddress : NSObject {
}
+ (NSString *)macAddress;
@end
@implementation GetMacAddress
+ (NSString *)macAddress
{
kern_return_t kernResult = KERN_SUCCESS;
io_iterator_t intfIterator;
UInt8 MACAddress[kIOEthernetAddressSize];
kernResult = FindEthernetInterfaces(&intfIterator);
if (KERN_SUCCESS != kernResult) {
printf("FindEthernetInterfaces returned 0x%08x\n", kernResult);
}
else {
kernResult = GetMACAddress(intfIterator, MACAddress, sizeof(MACAddress));
if (KERN_SUCCESS != kernResult) {
printf("GetMACAddress returned 0x%08x\n", kernResult);
}
else {
char buffer[500];
sprintf(buffer, "%02x%02x%02x%02x%02x%02x",
MACAddress[0], MACAddress[1], MACAddress[2], MACAddress[3], MACAddress[4], MACAddress[5]);
NSString *macAddress = [NSString stringWithUTF8String:buffer];
return macAddress;
}
}
(void) IOObjectRelease(intfIterator); // Release the iterator.
return nil;
}
@end
static kern_return_t FindEthernetInterfaces(io_iterator_t *matchingServices)
{
kern_return_t kernResult;
CFMutableDictionaryRef matchingDict;
CFMutableDictionaryRef propertyMatchDict;
matchingDict = IOServiceMatching(kIOEthernetInterfaceClass);
if (NULL == matchingDict) {
printf("IOServiceMatching returned a NULL dictionary.\n");
}
else {
propertyMatchDict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
if (NULL == propertyMatchDict) {
printf("CFDictionaryCreateMutable returned a NULL dictionary.\n");
}
else {
CFDictionarySetValue(propertyMatchDict, CFSTR(kIOPrimaryInterface), kCFBooleanTrue);
CFDictionarySetValue(matchingDict, CFSTR(kIOPropertyMatchKey), propertyMatchDict);
CFRelease(propertyMatchDict);
}
}
kernResult = IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, matchingServices);
if (KERN_SUCCESS != kernResult) {
printf("IOServiceGetMatchingServices returned 0x%08x\n", kernResult);
}
return kernResult;
}
static kern_return_t GetMACAddress(io_iterator_t intfIterator, UInt8 *MACAddress, UInt8 bufferSize)
{
io_object_t intfService;
io_object_t controllerService;
kern_return_t kernResult = KERN_FAILURE;
if (bufferSize < kIOEthernetAddressSize) {
return kernResult;
}
bzero(MACAddress, bufferSize);
while ((intfService = IOIteratorNext(intfIterator)))
{
CFTypeRef MACAddressAsCFData;
kernResult = IORegistryEntryGetParentEntry(intfService,
kIOServicePlane,
&controllerService);
if (KERN_SUCCESS != kernResult) {
printf("IORegistryEntryGetParentEntry returned 0x%08x\n", kernResult);
}
else {
MACAddressAsCFData = IORegistryEntryCreateCFProperty(controllerService,
CFSTR(kIOMACAddress),
kCFAllocatorDefault,
0);
if (MACAddressAsCFData) {
//CFShow(MACAddressAsCFData);
CFDataGetBytes(MACAddressAsCFData, CFRangeMake(0, kIOEthernetAddressSize), MACAddress);
CFRelease(MACAddressAsCFData);
}
(void) IOObjectRelease(controllerService);
}
(void) IOObjectRelease(intfService);
}
return kernResult;
}