[PATCH v2] imap-send: use Apple's Security framework for base64 encoding
From: David Aguilar <hidden>
Date: 2016-06-15 22:58:16
From: Jeremy Huddleston <redacted> Use Apple's supported functions for base64 encoding instead of the deprecated OpenSSL functions. Signed-off-by: Jeremy Huddleston <redacted> Signed-off-by: David Aguilar <redacted> --- This version moves the tricky #ifdefs into git-compat-util.h Makefile | 1 + git-compat-util.h | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ imap-send.c | 14 -------- 3 files changed, 96 insertions(+), 14 deletions(-)
diff --git a/Makefile b/Makefile
index ef442eb..2b1e936 100644
--- a/Makefile
+++ b/Makefile@@ -1414,6 +1414,7 @@ ifdef PPC_SHA1 LIB_H += ppc/sha1.h else ifdef APPLE_COMMON_CRYPTO + LIB_4_CRYPTO += -framework Security -framework CoreFoundation COMPAT_CFLAGS += -DCOMMON_DIGEST_FOR_OPENSSL SHA1_HEADER = <CommonCrypto/CommonDigest.h> else
diff --git a/git-compat-util.h b/git-compat-util.h
index cc4ba4d..1ba89f8 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h@@ -129,6 +129,32 @@ #include <poll.h> #endif +#ifndef NO_OPENSSL +#ifdef APPLE_COMMON_CRYPTO +/* suppress inclusion of conflicting openssl functions */ +#define OPENSSL_NO_MD5 +#define HEADER_HMAC_H +#define HEADER_SHA_H +#include <CommonCrypto/CommonHMAC.h> +#define HMAC_CTX CCHmacContext +#define HMAC_Init(hmac, key, len, algo) CCHmacInit(hmac, algo, key, len) +#define HMAC_Update CCHmacUpdate +#define HMAC_Final(hmac, hash, ptr) CCHmacFinal(hmac, hash) +#define HMAC_CTX_cleanup(ignore) +#define EVP_md5(...) kCCHmacAlgMD5 +#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 +#else +#include <openssl/evp.h> +#include <openssl/hmac.h> +#endif /* APPLE_COMMON_CRYPTO */ +#include <openssl/x509v3.h> +#endif /* NO_OPENSSL */ + extern int get_st_mode_bits(const char *path, int *mode); #if defined(__MINGW32__)
@@ -717,4 +743,73 @@ void warn_on_inaccessible(const char *path); /* Get the passwd entry for the UID of the current process. */ struct passwd *xgetpwuid_self(void); +#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 */ + #endif
diff --git a/imap-send.c b/imap-send.c
index d6b65e2..6f5cc4f 100644
--- a/imap-send.c
+++ b/imap-send.c@@ -28,20 +28,6 @@ #include "prompt.h" #ifdef NO_OPENSSL typedef void *SSL; -#else -#ifdef APPLE_COMMON_CRYPTO -#include <CommonCrypto/CommonHMAC.h> -#define HMAC_CTX CCHmacContext -#define HMAC_Init(hmac, key, len, algo) CCHmacInit(hmac, algo, key, len) -#define HMAC_Update CCHmacUpdate -#define HMAC_Final(hmac, hash, ptr) CCHmacFinal(hmac, hash) -#define HMAC_CTX_cleanup(ignore) -#define EVP_md5() kCCHmacAlgMD5 -#else -#include <openssl/evp.h> -#include <openssl/hmac.h> -#endif -#include <openssl/x509v3.h> #endif static const char imap_send_usage[] = "git imap-send < <mbox>";
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1.8.4.rc0.2.g416d4cd