diff --git a/hlibgit2.cabal b/hlibgit2.cabal --- a/hlibgit2.cabal +++ b/hlibgit2.cabal @@ -1,5 +1,5 @@ Name: hlibgit2 -Version: 0.18.0.1 +Version: 0.18.0.2 Synopsis: Low-level bindings to libgit2 Description: Bindings to libgit2 v0.18.0. License-file: LICENSE @@ -15,6 +15,7 @@ libgit2/include/git2.h libgit2/include/git2/*.h libgit2/src/*.h + libgit2/src/hash/*.h libgit2/src/unix/*.h libgit2/src/win32/*.h libgit2/src/xdiff/*.h diff --git a/libgit2/src/hash/hash_generic.h b/libgit2/src/hash/hash_generic.h new file mode 100644 --- /dev/null +++ b/libgit2/src/hash/hash_generic.h @@ -0,0 +1,24 @@ +/* + * Copyright (C) the libgit2 contributors. All rights reserved. + * + * This file is part of libgit2, distributed under the GNU GPL v2 with + * a Linking Exception. For full terms see the included COPYING file. + */ + +#ifndef INCLUDE_hash_generic_h__ +#define INCLUDE_hash_generic_h__ + +#include "hash.h" + +struct git_hash_ctx { + unsigned long long size; + unsigned int H[5]; + unsigned int W[16]; +}; + +#define git_hash_global_init() 0 +#define git_hash_global_shutdown() /* noop */ +#define git_hash_ctx_init(ctx) git_hash_init(ctx) +#define git_hash_ctx_cleanup(ctx) + +#endif /* INCLUDE_hash_generic_h__ */ diff --git a/libgit2/src/hash/hash_openssl.h b/libgit2/src/hash/hash_openssl.h new file mode 100644 --- /dev/null +++ b/libgit2/src/hash/hash_openssl.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) the libgit2 contributors. All rights reserved. + * + * This file is part of libgit2, distributed under the GNU GPL v2 with + * a Linking Exception. For full terms see the included COPYING file. + */ + +#ifndef INCLUDE_hash_openssl_h__ +#define INCLUDE_hash_openssl_h__ + +#include "hash.h" + +#include + +struct git_hash_ctx { + SHA_CTX c; +}; + +#define git_hash_global_init() 0 +#define git_hash_global_shutdown() /* noop */ +#define git_hash_ctx_init(ctx) git_hash_init(ctx) +#define git_hash_ctx_cleanup(ctx) + +GIT_INLINE(int) git_hash_init(git_hash_ctx *ctx) +{ + assert(ctx); + SHA1_Init(&ctx->c); + return 0; +} + +GIT_INLINE(int) git_hash_update(git_hash_ctx *ctx, const void *data, size_t len) +{ + assert(ctx); + SHA1_Update(&ctx->c, data, len); + return 0; +} + +GIT_INLINE(int) git_hash_final(git_oid *out, git_hash_ctx *ctx) +{ + assert(ctx); + SHA1_Final(out->id, &ctx->c); + return 0; +} + +#endif /* INCLUDE_hash_openssl_h__ */ diff --git a/libgit2/src/hash/hash_win32.h b/libgit2/src/hash/hash_win32.h new file mode 100644 --- /dev/null +++ b/libgit2/src/hash/hash_win32.h @@ -0,0 +1,140 @@ +/* + * Copyright (C) the libgit2 contributors. All rights reserved. + * + * This file is part of libgit2, distributed under the GNU GPL v2 with + * a Linking Exception. For full terms see the included COPYING file. + */ + +#ifndef INCLUDE_hash_win32_h__ +#define INCLUDE_hash_win32_h__ + +#include "common.h" +#include "hash.h" + +#include +#include + +enum hash_win32_prov_type { + INVALID = 0, + CRYPTOAPI, + CNG +}; + +/* + * CryptoAPI is available for hashing on Windows XP and newer. + */ + +struct hash_cryptoapi_prov { + HCRYPTPROV handle; +}; + +/* + * CNG (bcrypt.dll) is significantly more performant than CryptoAPI and is + * preferred, however it is only available on Windows 2008 and newer and + * must therefore be dynamically loaded, and we must inline constants that + * would not exist when building in pre-Windows 2008 environments. + */ + +#define GIT_HASH_CNG_DLL_NAME "bcrypt.dll" + +/* BCRYPT_SHA1_ALGORITHM */ +#define GIT_HASH_CNG_HASH_TYPE L"SHA1" + +/* BCRYPT_OBJECT_LENGTH */ +#define GIT_HASH_CNG_HASH_OBJECT_LEN L"ObjectLength" + +/* BCRYPT_HASH_REUSEABLE_FLAGS */ +#define GIT_HASH_CNG_HASH_REUSABLE 0x00000020 + +/* Function declarations for CNG */ +typedef NTSTATUS (WINAPI *hash_win32_cng_open_algorithm_provider_fn)( + HANDLE /* BCRYPT_ALG_HANDLE */ *phAlgorithm, + LPCWSTR pszAlgId, + LPCWSTR pszImplementation, + DWORD dwFlags); + +typedef NTSTATUS (WINAPI *hash_win32_cng_get_property_fn)( + HANDLE /* BCRYPT_HANDLE */ hObject, + LPCWSTR pszProperty, + PUCHAR pbOutput, + ULONG cbOutput, + ULONG *pcbResult, + ULONG dwFlags); + +typedef NTSTATUS (WINAPI *hash_win32_cng_create_hash_fn)( + HANDLE /* BCRYPT_ALG_HANDLE */ hAlgorithm, + HANDLE /* BCRYPT_HASH_HANDLE */ *phHash, + PUCHAR pbHashObject, ULONG cbHashObject, + PUCHAR pbSecret, + ULONG cbSecret, + ULONG dwFlags); + +typedef NTSTATUS (WINAPI *hash_win32_cng_finish_hash_fn)( + HANDLE /* BCRYPT_HASH_HANDLE */ hHash, + PUCHAR pbOutput, + ULONG cbOutput, + ULONG dwFlags); + +typedef NTSTATUS (WINAPI *hash_win32_cng_hash_data_fn)( + HANDLE /* BCRYPT_HASH_HANDLE */ hHash, + PUCHAR pbInput, + ULONG cbInput, + ULONG dwFlags); + +typedef NTSTATUS (WINAPI *hash_win32_cng_destroy_hash_fn)( + HANDLE /* BCRYPT_HASH_HANDLE */ hHash); + +typedef NTSTATUS (WINAPI *hash_win32_cng_close_algorithm_provider_fn)( + HANDLE /* BCRYPT_ALG_HANDLE */ hAlgorithm, + ULONG dwFlags); + +struct hash_cng_prov { + /* DLL for CNG */ + HINSTANCE dll; + + /* Function pointers for CNG */ + hash_win32_cng_open_algorithm_provider_fn open_algorithm_provider; + hash_win32_cng_get_property_fn get_property; + hash_win32_cng_create_hash_fn create_hash; + hash_win32_cng_finish_hash_fn finish_hash; + hash_win32_cng_hash_data_fn hash_data; + hash_win32_cng_destroy_hash_fn destroy_hash; + hash_win32_cng_close_algorithm_provider_fn close_algorithm_provider; + + HANDLE /* BCRYPT_ALG_HANDLE */ handle; + DWORD hash_object_size; +}; + +struct git_hash_prov { + enum hash_win32_prov_type type; + + union { + struct hash_cryptoapi_prov cryptoapi; + struct hash_cng_prov cng; + } prov; +}; + +/* Hash contexts */ + +struct hash_cryptoapi_ctx { + bool valid; + HCRYPTHASH hash_handle; +}; + +struct hash_cng_ctx { + bool updated; + HANDLE /* BCRYPT_HASH_HANDLE */ hash_handle; + PBYTE hash_object; +}; + +struct git_hash_ctx { + enum hash_win32_prov_type type; + git_hash_prov *prov; + + union { + struct hash_cryptoapi_ctx cryptoapi; + struct hash_cng_ctx cng; + } ctx; +}; + +#endif /* INCLUDE_hash_openssl_h__ */