compat/apple-common-crypto.h

   1 /* suppress inclusion of conflicting openssl functions */
   2 #define OPENSSL_NO_MD5
   3 #define HEADER_HMAC_H
   4 #define HEADER_SHA_H
   5 #include <CommonCrypto/CommonHMAC.h>
   6 #define HMAC_CTX CCHmacContext
   7 #define HMAC_Init(hmac, key, len, algo) CCHmacInit(hmac, algo, key, len)
   8 #define HMAC_Update CCHmacUpdate
   9 #define HMAC_Final(hmac, hash, ptr) CCHmacFinal(hmac, hash)
  10 #define HMAC_CTX_cleanup(ignore)
  11 #define EVP_md5(...) kCCHmacAlgMD5
  12 #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
  13 #define APPLE_LION_OR_NEWER
  14 #include <Security/Security.h>
  15 /* Apple's TYPE_BOOL conflicts with config.c */
  16 #undef TYPE_BOOL
  17 #endif
  18
  19 #ifdef APPLE_LION_OR_NEWER
  20 #define git_CC_error_check(pattern, err) \
  21         do { \
  22                 if (err) { \
  23                         die(pattern, (long)CFErrorGetCode(err)); \
  24                 } \
  25         } while(0)
  26
  27 #define EVP_EncodeBlock git_CC_EVP_EncodeBlock
  28 static inline int git_CC_EVP_EncodeBlock(unsigned char *out,
  29                 const unsigned char *in, int inlen)
  30 {
  31         CFErrorRef err;
  32         SecTransformRef encoder;
  33         CFDataRef input, output;
  34         CFIndex length;
  35
  36         encoder = SecEncodeTransformCreate(kSecBase64Encoding, &err);
  37         git_CC_error_check("SecEncodeTransformCreate failed: %ld", err);
  38
  39         input = CFDataCreate(kCFAllocatorDefault, in, inlen);
  40         SecTransformSetAttribute(encoder, kSecTransformInputAttributeName,
  41                         input, &err);
  42         git_CC_error_check("SecTransformSetAttribute failed: %ld", err);
  43
  44         output = SecTransformExecute(encoder, &err);
  45         git_CC_error_check("SecTransformExecute failed: %ld", err);
  46
  47         length = CFDataGetLength(output);
  48         CFDataGetBytes(output, CFRangeMake(0, length), out);
  49
  50         CFRelease(output);
  51         CFRelease(input);
  52         CFRelease(encoder);
  53
  54         return (int)strlen((const char *)out);
  55 }
  56
  57 #define EVP_DecodeBlock git_CC_EVP_DecodeBlock
  58 static int inline git_CC_EVP_DecodeBlock(unsigned char *out,
  59                 const unsigned char *in, int inlen)
  60 {
  61         CFErrorRef err;
  62         SecTransformRef decoder;
  63         CFDataRef input, output;
  64         CFIndex length;
  65
  66         decoder = SecDecodeTransformCreate(kSecBase64Encoding, &err);
  67         git_CC_error_check("SecEncodeTransformCreate failed: %ld", err);
  68
  69         input = CFDataCreate(kCFAllocatorDefault, in, inlen);
  70         SecTransformSetAttribute(decoder, kSecTransformInputAttributeName,
  71                         input, &err);
  72         git_CC_error_check("SecTransformSetAttribute failed: %ld", err);
  73
  74         output = SecTransformExecute(decoder, &err);
  75         git_CC_error_check("SecTransformExecute failed: %ld", err);
  76
  77         length = CFDataGetLength(output);
  78         CFDataGetBytes(output, CFRangeMake(0, length), out);
  79
  80         CFRelease(output);
  81         CFRelease(input);
  82         CFRelease(decoder);
  83
  84         return (int)strlen((const char *)out);
  85 }
  86 #endif /* APPLE_LION_OR_NEWER */