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ethernet.c
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ethernet.c
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/*
* ethernet.c
* validation-sample
*
* Created by Jim Dovey on 6/1/2011.
*
* Copyright (c) 2011 Jim Dovey
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of the project's author nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <IOKit/IOKitLib.h>
#include <CoreFoundation/CoreFoundation.h>
CFDataRef CopyMACAddressData( void )
{
kern_return_t kr = KERN_SUCCESS;
CFMutableDictionaryRef matching = NULL;
io_iterator_t iterator = IO_OBJECT_NULL;
io_object_t service = IO_OBJECT_NULL;
CFDataRef result = NULL;
matching = IOBSDNameMatching( kIOMasterPortDefault, 0, "en0" );
if ( matching == NULL )
{
fprintf( stderr, "IOBSDNameMatching() returned empty dictionary\n" );
return ( NULL );
}
kr = IOServiceGetMatchingServices( kIOMasterPortDefault, matching, &iterator );
if ( kr != KERN_SUCCESS )
{
fprintf( stderr, "IOServiceGetMatchingServices() returned %d\n", kr );
return ( NULL );
}
while ( (service = IOIteratorNext(iterator)) != IO_OBJECT_NULL )
{
io_object_t parent = IO_OBJECT_NULL;
kr = IORegistryEntryGetParentEntry( service, kIOServicePlane, &parent );
if ( kr == KERN_SUCCESS )
{
if ( result != NULL )
CFRelease( result );
result = IORegistryEntryCreateCFProperty( parent, CFSTR("IOMACAddress"), kCFAllocatorDefault, 0 );
IOObjectRelease( parent );
}
else
{
fprintf( stderr, "IORegistryGetParentEntry returned %d\n", kr );
}
IOObjectRelease( service );
}
return ( result );
}