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001fd7a90b
Using the previous commit's inredirection mechanism for SHA1, support a chunked implementation of SHA1_Update() that limits the amount of data in the chunk passed to SHA1_Update(). This is enabled by using the Makefile variable SHA1_MAX_BLOCK_SIZE to specify chunk size. When using Apple's CommonCrypto library this is set to 1GiB (the implementation cannot handle more 4GiB). Signed-off-by: Atousa Pahlevan Duprat <apahlevan@ieee.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/* suppress inclusion of conflicting openssl functions */
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#define OPENSSL_NO_MD5
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#define HEADER_HMAC_H
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#define HEADER_SHA_H
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#include <CommonCrypto/CommonHMAC.h>
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#define HMAC_CTX CCHmacContext
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#define HMAC_Init(hmac, key, len, algo) CCHmacInit(hmac, algo, key, len)
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#define HMAC_Update CCHmacUpdate
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#define HMAC_Final(hmac, hash, ptr) CCHmacFinal(hmac, hash)
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#define HMAC_CTX_cleanup(ignore)
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#define EVP_md5(...) kCCHmacAlgMD5
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#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
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#define APPLE_LION_OR_NEWER
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#include <Security/Security.h>
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/* Apple's TYPE_BOOL conflicts with config.c */
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#undef TYPE_BOOL
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#endif
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#ifndef SHA1_MAX_BLOCK_SIZE
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#error Using Apple Common Crypto library requires setting SHA1_MAX_BLOCK_SIZE
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#endif
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#ifdef APPLE_LION_OR_NEWER
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#define git_CC_error_check(pattern, err) \
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do { \
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if (err) { \
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die(pattern, (long)CFErrorGetCode(err)); \
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} \
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} while(0)
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#define EVP_EncodeBlock git_CC_EVP_EncodeBlock
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static inline int git_CC_EVP_EncodeBlock(unsigned char *out,
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const unsigned char *in, int inlen)
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{
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CFErrorRef err;
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SecTransformRef encoder;
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CFDataRef input, output;
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CFIndex length;
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encoder = SecEncodeTransformCreate(kSecBase64Encoding, &err);
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git_CC_error_check("SecEncodeTransformCreate failed: %ld", err);
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input = CFDataCreate(kCFAllocatorDefault, in, inlen);
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SecTransformSetAttribute(encoder, kSecTransformInputAttributeName,
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input, &err);
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git_CC_error_check("SecTransformSetAttribute failed: %ld", err);
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output = SecTransformExecute(encoder, &err);
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git_CC_error_check("SecTransformExecute failed: %ld", err);
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length = CFDataGetLength(output);
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CFDataGetBytes(output, CFRangeMake(0, length), out);
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CFRelease(output);
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CFRelease(input);
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CFRelease(encoder);
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return (int)strlen((const char *)out);
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}
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#define EVP_DecodeBlock git_CC_EVP_DecodeBlock
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static int inline git_CC_EVP_DecodeBlock(unsigned char *out,
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const unsigned char *in, int inlen)
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{
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CFErrorRef err;
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SecTransformRef decoder;
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CFDataRef input, output;
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CFIndex length;
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decoder = SecDecodeTransformCreate(kSecBase64Encoding, &err);
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git_CC_error_check("SecEncodeTransformCreate failed: %ld", err);
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input = CFDataCreate(kCFAllocatorDefault, in, inlen);
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SecTransformSetAttribute(decoder, kSecTransformInputAttributeName,
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input, &err);
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git_CC_error_check("SecTransformSetAttribute failed: %ld", err);
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output = SecTransformExecute(decoder, &err);
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git_CC_error_check("SecTransformExecute failed: %ld", err);
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length = CFDataGetLength(output);
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CFDataGetBytes(output, CFRangeMake(0, length), out);
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CFRelease(output);
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CFRelease(input);
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CFRelease(decoder);
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return (int)strlen((const char *)out);
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}
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#endif /* APPLE_LION_OR_NEWER */
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