ObjXMPP  Diff

 * 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 <string.h>

#include <assert.h>

#include <openssl/rand.h>

#import "XMPPSCRAMAuth.h"
#import "XMPPExceptions.h"

#define HMAC_IPAD 0x36
#define HMAC_OPAD 0x5c

#ifndef HAVE_ARC4RANDOM_UNIFORM
extern uint32_t arc4random_uniform(uint32_t);
#endif

@implementation XMPPSCRAMAuth
+ SCRAMAuthWithAuthcid: (OFString*)authcid
	      password: (OFString*)password
		  hash: (Class)hash;
{
	return [[[self alloc] initWithAuthcid: authcid
				     password: password

						      reason: value];

	[pool release];
}

- (OFString*)XMPP_genNonce
{
	OFMutableString *nonce = [OFMutableString string];
	uint32_t res, i;
	uint8_t buf[64];
	size_t i;

	assert(RAND_pseudo_bytes(buf, 64) >= 0);

	for (i = 0; i < 64; i++) {
		uint8_t tmp = (buf[i] % ('~' - '!')) + '!';
		while ((res = arc4random_uniform('~' - '!' + 1) + '!') == ',');
		[nonce appendFormat: @"%c", res];

		while (tmp == ',')
			tmp = ((buf[i] >> 1) % ('~' - '!')) + '!';

		buf[i] = tmp;
	}

	return nonce;
	return [OFString stringWithCString: (char*)buf
				    length: 64];
}

- (uint8_t*)XMPP_HMACWithKey: (OFDataArray*)key
			data: (OFDataArray*)data
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFDataArray *k = [OFDataArray dataArrayWithItemSize: 1];