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-rw-r--r--compat/apple-common-crypto.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/compat/apple-common-crypto.h b/compat/apple-common-crypto.h
new file mode 100644
index 0000000000..11727f3e1e
--- /dev/null
+++ b/compat/apple-common-crypto.h
@@ -0,0 +1,96 @@
+/* suppress inclusion of conflicting openssl functions */
+#define OPENSSL_NO_MD5
+#define HEADER_HMAC_H
+#define HEADER_SHA_H
+#include <CommonCrypto/CommonHMAC.h>
+#define EVP_md5(...) kCCHmacAlgMD5
+/* CCHmac doesn't take md_len and the return type is void */
+#define HMAC git_CC_HMAC
+static inline unsigned char *git_CC_HMAC(CCHmacAlgorithm alg,
+ const void *key, int key_len,
+ const unsigned char *data, size_t data_len,
+ unsigned char *md, unsigned int *md_len)
+{
+ CCHmac(alg, key, key_len, data, data_len, md);
+ return md;
+}
+
+#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
+#define APPLE_LION_OR_NEWER
+#include <Security/Security.h>
+/* Apple's TYPE_BOOL conflicts with config.c */
+#undef TYPE_BOOL
+#endif
+
+#ifndef SHA1_MAX_BLOCK_SIZE
+#error Using Apple Common Crypto library requires setting SHA1_MAX_BLOCK_SIZE
+#endif
+
+#ifdef APPLE_LION_OR_NEWER
+#define git_CC_error_check(pattern, err) \
+ do { \
+ if (err) { \
+ die(pattern, (long)CFErrorGetCode(err)); \
+ } \
+ } while(0)
+
+#define EVP_EncodeBlock git_CC_EVP_EncodeBlock
+static inline int git_CC_EVP_EncodeBlock(unsigned char *out,
+ const unsigned char *in, int inlen)
+{
+ CFErrorRef err;
+ SecTransformRef encoder;
+ CFDataRef input, output;
+ CFIndex length;
+
+ encoder = SecEncodeTransformCreate(kSecBase64Encoding, &err);
+ git_CC_error_check("SecEncodeTransformCreate failed: %ld", err);
+
+ input = CFDataCreate(kCFAllocatorDefault, in, inlen);
+ SecTransformSetAttribute(encoder, kSecTransformInputAttributeName,
+ input, &err);
+ git_CC_error_check("SecTransformSetAttribute failed: %ld", err);
+
+ output = SecTransformExecute(encoder, &err);
+ git_CC_error_check("SecTransformExecute failed: %ld", err);
+
+ length = CFDataGetLength(output);
+ CFDataGetBytes(output, CFRangeMake(0, length), out);
+
+ CFRelease(output);
+ CFRelease(input);
+ CFRelease(encoder);
+
+ return (int)strlen((const char *)out);
+}
+
+#define EVP_DecodeBlock git_CC_EVP_DecodeBlock
+static int inline git_CC_EVP_DecodeBlock(unsigned char *out,
+ const unsigned char *in, int inlen)
+{
+ CFErrorRef err;
+ SecTransformRef decoder;
+ CFDataRef input, output;
+ CFIndex length;
+
+ decoder = SecDecodeTransformCreate(kSecBase64Encoding, &err);
+ git_CC_error_check("SecEncodeTransformCreate failed: %ld", err);
+
+ input = CFDataCreate(kCFAllocatorDefault, in, inlen);
+ SecTransformSetAttribute(decoder, kSecTransformInputAttributeName,
+ input, &err);
+ git_CC_error_check("SecTransformSetAttribute failed: %ld", err);
+
+ output = SecTransformExecute(decoder, &err);
+ git_CC_error_check("SecTransformExecute failed: %ld", err);
+
+ length = CFDataGetLength(output);
+ CFDataGetBytes(output, CFRangeMake(0, length), out);
+
+ CFRelease(output);
+ CFRelease(input);
+ CFRelease(decoder);
+
+ return (int)strlen((const char *)out);
+}
+#endif /* APPLE_LION_OR_NEWER */