diff options
Diffstat (limited to 'third_party/git/hash.h')
| -rw-r--r-- | third_party/git/hash.h | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/third_party/git/hash.h b/third_party/git/hash.h deleted file mode 100644 index e0f3f16b06b7..000000000000 --- a/third_party/git/hash.h +++ /dev/null @@ -1,187 +0,0 @@ -#ifndef HASH_H -#define HASH_H - -#include "git-compat-util.h" - -#if defined(SHA1_PPC) -#include "ppc/sha1.h" -#elif defined(SHA1_APPLE) -#include <CommonCrypto/CommonDigest.h> -#elif defined(SHA1_OPENSSL) -#include <openssl/sha.h> -#elif defined(SHA1_DC) -#include "sha1dc_git.h" -#else /* SHA1_BLK */ -#include "block-sha1/sha1.h" -#endif - -#if defined(SHA256_GCRYPT) -#define SHA256_NEEDS_CLONE_HELPER -#include "sha256/gcrypt.h" -#elif defined(SHA256_OPENSSL) -#include <openssl/sha.h> -#else -#include "sha256/block/sha256.h" -#endif - -#ifndef platform_SHA_CTX -/* - * platform's underlying implementation of SHA-1; could be OpenSSL, - * blk_SHA, Apple CommonCrypto, etc... Note that the relevant - * SHA-1 header may have already defined platform_SHA_CTX for our - * own implementations like block-sha1 and ppc-sha1, so we list - * the default for OpenSSL compatible SHA-1 implementations here. - */ -#define platform_SHA_CTX SHA_CTX -#define platform_SHA1_Init SHA1_Init -#define platform_SHA1_Update SHA1_Update -#define platform_SHA1_Final SHA1_Final -#endif - -#define git_SHA_CTX platform_SHA_CTX -#define git_SHA1_Init platform_SHA1_Init -#define git_SHA1_Update platform_SHA1_Update -#define git_SHA1_Final platform_SHA1_Final - -#ifndef platform_SHA256_CTX -#define platform_SHA256_CTX SHA256_CTX -#define platform_SHA256_Init SHA256_Init -#define platform_SHA256_Update SHA256_Update -#define platform_SHA256_Final SHA256_Final -#endif - -#define git_SHA256_CTX platform_SHA256_CTX -#define git_SHA256_Init platform_SHA256_Init -#define git_SHA256_Update platform_SHA256_Update -#define git_SHA256_Final platform_SHA256_Final - -#ifdef platform_SHA256_Clone -#define git_SHA256_Clone platform_SHA256_Clone -#endif - -#ifdef SHA1_MAX_BLOCK_SIZE -#include "compat/sha1-chunked.h" -#undef git_SHA1_Update -#define git_SHA1_Update git_SHA1_Update_Chunked -#endif - -static inline void git_SHA1_Clone(git_SHA_CTX *dst, const git_SHA_CTX *src) -{ - memcpy(dst, src, sizeof(*dst)); -} - -#ifndef SHA256_NEEDS_CLONE_HELPER -static inline void git_SHA256_Clone(git_SHA256_CTX *dst, const git_SHA256_CTX *src) -{ - memcpy(dst, src, sizeof(*dst)); -} -#endif - -/* - * Note that these constants are suitable for indexing the hash_algos array and - * comparing against each other, but are otherwise arbitrary, so they should not - * be exposed to the user or serialized to disk. To know whether a - * git_hash_algo struct points to some usable hash function, test the format_id - * field for being non-zero. Use the name field for user-visible situations and - * the format_id field for fixed-length fields on disk. - */ -/* An unknown hash function. */ -#define GIT_HASH_UNKNOWN 0 -/* SHA-1 */ -#define GIT_HASH_SHA1 1 -/* SHA-256 */ -#define GIT_HASH_SHA256 2 -/* Number of algorithms supported (including unknown). */ -#define GIT_HASH_NALGOS (GIT_HASH_SHA256 + 1) - -/* A suitably aligned type for stack allocations of hash contexts. */ -union git_hash_ctx { - git_SHA_CTX sha1; - git_SHA256_CTX sha256; -}; -typedef union git_hash_ctx git_hash_ctx; - -typedef void (*git_hash_init_fn)(git_hash_ctx *ctx); -typedef void (*git_hash_clone_fn)(git_hash_ctx *dst, const git_hash_ctx *src); -typedef void (*git_hash_update_fn)(git_hash_ctx *ctx, const void *in, size_t len); -typedef void (*git_hash_final_fn)(unsigned char *hash, git_hash_ctx *ctx); - -struct git_hash_algo { - /* - * The name of the algorithm, as appears in the config file and in - * messages. - */ - const char *name; - - /* A four-byte version identifier, used in pack indices. */ - uint32_t format_id; - - /* The length of the hash in binary. */ - size_t rawsz; - - /* The length of the hash in hex characters. */ - size_t hexsz; - - /* The block size of the hash. */ - size_t blksz; - - /* The hash initialization function. */ - git_hash_init_fn init_fn; - - /* The hash context cloning function. */ - git_hash_clone_fn clone_fn; - - /* The hash update function. */ - git_hash_update_fn update_fn; - - /* The hash finalization function. */ - git_hash_final_fn final_fn; - - /* The OID of the empty tree. */ - const struct object_id *empty_tree; - - /* The OID of the empty blob. */ - const struct object_id *empty_blob; -}; -extern const struct git_hash_algo hash_algos[GIT_HASH_NALGOS]; - -/* - * Return a GIT_HASH_* constant based on the name. Returns GIT_HASH_UNKNOWN if - * the name doesn't match a known algorithm. - */ -int hash_algo_by_name(const char *name); -/* Identical, except based on the format ID. */ -int hash_algo_by_id(uint32_t format_id); -/* Identical, except based on the length. */ -int hash_algo_by_length(int len); -/* Identical, except for a pointer to struct git_hash_algo. */ -static inline int hash_algo_by_ptr(const struct git_hash_algo *p) -{ - return p - hash_algos; -} - -/* The length in bytes and in hex digits of an object name (SHA-1 value). */ -#define GIT_SHA1_RAWSZ 20 -#define GIT_SHA1_HEXSZ (2 * GIT_SHA1_RAWSZ) -/* The block size of SHA-1. */ -#define GIT_SHA1_BLKSZ 64 - -/* The length in bytes and in hex digits of an object name (SHA-256 value). */ -#define GIT_SHA256_RAWSZ 32 -#define GIT_SHA256_HEXSZ (2 * GIT_SHA256_RAWSZ) -/* The block size of SHA-256. */ -#define GIT_SHA256_BLKSZ 64 - -/* The length in byte and in hex digits of the largest possible hash value. */ -#define GIT_MAX_RAWSZ GIT_SHA256_RAWSZ -#define GIT_MAX_HEXSZ GIT_SHA256_HEXSZ -/* The largest possible block size for any supported hash. */ -#define GIT_MAX_BLKSZ GIT_SHA256_BLKSZ - -struct object_id { - unsigned char hash[GIT_MAX_RAWSZ]; -}; - -#define the_hash_algo the_repository->hash_algo - -#endif |