diff options
Diffstat (limited to 'Utilities/cmlibrhash/librhash/rhash.c')
| -rw-r--r-- | Utilities/cmlibrhash/librhash/rhash.c | 320 |
1 files changed, 74 insertions, 246 deletions
diff --git a/Utilities/cmlibrhash/librhash/rhash.c b/Utilities/cmlibrhash/librhash/rhash.c index 34e1eb3..ce6ace4 100644 --- a/Utilities/cmlibrhash/librhash/rhash.c +++ b/Utilities/cmlibrhash/librhash/rhash.c @@ -1,42 +1,40 @@ /* rhash.c - implementation of LibRHash library calls * - * Copyright: 2008-2012 Aleksey Kravchenko <rhash.admin@gmail.com> + * Copyright (c) 2008, Aleksey Kravchenko <rhash.admin@gmail.com> * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so. + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted. * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. Use this program at your own risk! + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. */ +/* modifier for Windows DLL */ +#if (defined(_WIN32) || defined(__CYGWIN__)) && defined(RHASH_EXPORTS) +# define RHASH_API __declspec(dllexport) +#endif + /* macros for large file support, must be defined before any include file */ #define _LARGEFILE64_SOURCE #define _FILE_OFFSET_BITS 64 #include "ustd.h" /* Need this first within CMake. */ -#include <string.h> /* memset() */ -#include <stdlib.h> /* free() */ -#include <stddef.h> /* ptrdiff_t */ -#include <stdio.h> -#include <assert.h> -#include <errno.h> - -/* modifier for Windows DLL */ -#if defined(_WIN32) && defined(RHASH_EXPORTS) -# define RHASH_API __declspec(dllexport) -#endif - -#include "byte_order.h" +#include "rhash.h" #include "algorithms.h" -#include "util.h" +#include "byte_order.h" #include "hex.h" -#include "rhash.h" /* RHash library interface */ +#include "util.h" +#include <assert.h> +#include <errno.h> +#include <stdlib.h> +#include <stddef.h> +#include <string.h> #define STATE_ACTIVE 0xb01dbabe #define STATE_STOPED 0xdeadbeef @@ -45,11 +43,8 @@ #define RCTX_FINALIZED 0x2 #define RCTX_FINALIZED_MASK (RCTX_AUTO_FINAL | RCTX_FINALIZED) #define RHPR_FORMAT (RHPR_RAW | RHPR_HEX | RHPR_BASE32 | RHPR_BASE64) -#define RHPR_MODIFIER (RHPR_UPPERCASE | RHPR_REVERSE) +#define RHPR_MODIFIER (RHPR_UPPERCASE | RHPR_URLENCODE | RHPR_REVERSE) -/** - * Initialize static data of rhash algorithms - */ void rhash_library_init(void) { rhash_init_algorithms(RHASH_ALL_HASHES); @@ -58,31 +53,18 @@ void rhash_library_init(void) #endif } -/** - * Returns the number of supported hash algorithms. - * - * @return the number of supported hash functions - */ int RHASH_API rhash_count(void) { return rhash_info_size; } -/* Lo-level rhash library functions */ +/* LOW-LEVEL LIBRHASH INTERFACE */ -/** - * Allocate and initialize RHash context for calculating hash(es). - * After initializing rhash_update()/rhash_final() functions should be used. - * Then the context must be freed by calling rhash_free(). - * - * @param hash_id union of bit flags, containing ids of hashes to calculate. - * @return initialized rhash context, NULL on error and errno is set - */ RHASH_API rhash rhash_init(unsigned hash_id) { unsigned tail_bit_index; /* index of hash_id trailing bit */ unsigned num = 0; /* number of hashes to compute */ - rhash_context_ext *rctx = NULL; /* allocated rhash context */ + rhash_context_ext* rctx = NULL; /* allocated rhash context */ size_t hash_size_sum = 0; /* size of hash contexts to store in rctx */ unsigned i, bit_index, id; @@ -123,7 +105,7 @@ RHASH_API rhash rhash_init(unsigned hash_id) } /* align the size of the rhash context common part */ - aligned_size = (offsetof(rhash_context_ext, vector[num]) + 7) & ~7; + aligned_size = ((offsetof(rhash_context_ext, vector) + sizeof(rhash_vector_item) * num) + 7) & ~7; assert(aligned_size >= sizeof(rhash_context_ext)); /* allocate rhash context with enough memory to store contexts of all used hashes */ @@ -170,11 +152,6 @@ RHASH_API rhash rhash_init(unsigned hash_id) return &rctx->rc; /* return allocated and initialized rhash context */ } -/** - * Free RHash context memory. - * - * @param ctx the context to free. - */ void rhash_free(rhash ctx) { rhash_context_ext* const ectx = (rhash_context_ext*)ctx; @@ -195,12 +172,6 @@ void rhash_free(rhash ctx) free(ectx); } -/** - * Re-initialize RHash context to reuse it. - * Useful to speed up processing of many small messages. - * - * @param ctx context to reinitialize - */ RHASH_API void rhash_reset(rhash ctx) { rhash_context_ext* const ectx = (rhash_context_ext*)ctx; @@ -223,15 +194,6 @@ RHASH_API void rhash_reset(rhash ctx) ectx->flags &= ~RCTX_FINALIZED; /* clear finalized state */ } -/** - * Calculate hashes of message. - * Can be called repeatedly with chunks of the message to be hashed. - * - * @param ctx the rhash context - * @param message message chunk - * @param length length of the message chunk - * @return 0 on success; On fail return -1 and set errno - */ RHASH_API int rhash_update(rhash ctx, const void* message, size_t length) { rhash_context_ext* const ectx = (rhash_context_ext*)ctx; @@ -251,13 +213,6 @@ RHASH_API int rhash_update(rhash ctx, const void* message, size_t length) return 0; /* no error processing at the moment */ } -/** - * Finalize hash calculation and optionally store the first hash. - * - * @param ctx the rhash context - * @param first_result optional buffer to store a calculated hash with the lowest available id - * @return 0 on success; On fail return -1 and set errno - */ RHASH_API int rhash_final(rhash ctx, unsigned char* first_result) { unsigned i = 0; @@ -295,7 +250,7 @@ static void rhash_put_digest(rhash ctx, unsigned hash_id, unsigned char* result) { rhash_context_ext* const ectx = (rhash_context_ext*)ctx; unsigned i; - rhash_vector_item *item; + rhash_vector_item* item; struct rhash_hash_info* info; unsigned char* digest; @@ -332,34 +287,14 @@ static void rhash_put_digest(rhash ctx, unsigned hash_id, unsigned char* result) } } -/** - * Set the callback function to be called from the - * rhash_file() and rhash_file_update() functions - * on processing every file block. The file block - * size is set internally by rhash and now is 8 KiB. - * - * @param ctx rhash context - * @param callback pointer to the callback function - * @param callback_data pointer to data passed to the callback - */ RHASH_API void rhash_set_callback(rhash ctx, rhash_callback_t callback, void* callback_data) { - ((rhash_context_ext*)ctx)->callback = callback; + ((rhash_context_ext*)ctx)->callback = (void*)callback; ((rhash_context_ext*)ctx)->callback_data = callback_data; } +/* HIGH-LEVEL LIBRHASH INTERFACE */ -/* hi-level message hashing interface */ - -/** - * Compute a hash of the given message. - * - * @param hash_id id of hash sum to compute - * @param message the message to process - * @param length message length - * @param result buffer to receive binary hash string - * @return 0 on success, -1 on error - */ RHASH_API int rhash_msg(unsigned hash_id, const void* message, size_t length, unsigned char* result) { rhash ctx; @@ -372,22 +307,12 @@ RHASH_API int rhash_msg(unsigned hash_id, const void* message, size_t length, un return 0; } -/** - * Hash a file or stream. Multiple hashes can be computed. - * First, inintialize ctx parameter with rhash_init() before calling - * rhash_file_update(). Then use rhash_final() and rhash_print() - * to retrive hash values. Finaly call rhash_free() on ctx - * to free allocated memory or call rhash_reset() to reuse ctx. - * - * @param ctx rhash context - * @param fd descriptor of the file to hash - * @return 0 on success, -1 on error and errno is set - */ RHASH_API int rhash_file_update(rhash ctx, FILE* fd) { rhash_context_ext* const ectx = (rhash_context_ext*)ctx; const size_t block_size = 8192; - unsigned char *buffer, *pmem; + unsigned char* buffer; + unsigned char* pmem; size_t length = 0, align8; int res = 0; if (ectx->state != STATE_ACTIVE) return 0; /* do nothing if canceled */ @@ -425,14 +350,6 @@ RHASH_API int rhash_file_update(rhash ctx, FILE* fd) return res; } -/** - * Compute a single hash for given file. - * - * @param hash_id id of hash sum to compute - * @param filepath path to the file to hash - * @param result buffer to receive hash value with the lowest requested id - * @return 0 on success, -1 on error and errno is set - */ RHASH_API int rhash_file(unsigned hash_id, const char* filepath, unsigned char* result) { FILE* fd; @@ -447,7 +364,10 @@ RHASH_API int rhash_file(unsigned hash_id, const char* filepath, unsigned char* if ((fd = fopen(filepath, "rb")) == NULL) return -1; - if ((ctx = rhash_init(hash_id)) == NULL) return -1; + if ((ctx = rhash_init(hash_id)) == NULL) { + fclose(fd); + return -1; + } res = rhash_file_update(ctx, fd); /* hash the file */ fclose(fd); @@ -460,14 +380,6 @@ RHASH_API int rhash_file(unsigned hash_id, const char* filepath, unsigned char* #ifdef _WIN32 /* windows only function */ #include <share.h> -/** - * Compute a single hash for given file. - * - * @param hash_id id of hash sum to compute - * @param filepath path to the file to hash - * @param result buffer to receive hash value with the lowest requested id - * @return 0 on success, -1 on error, -1 on error and errno is set - */ RHASH_API int rhash_wfile(unsigned hash_id, const wchar_t* filepath, unsigned char* result) { FILE* fd; @@ -482,7 +394,10 @@ RHASH_API int rhash_wfile(unsigned hash_id, const wchar_t* filepath, unsigned ch if ((fd = _wfsopen(filepath, L"rb", _SH_DENYWR)) == NULL) return -1; - if ((ctx = rhash_init(hash_id)) == NULL) return -1; + if ((ctx = rhash_init(hash_id)) == NULL) { + fclose(fd); + return -1; + } res = rhash_file_update(ctx, fd); /* hash the file */ fclose(fd); @@ -495,28 +410,7 @@ RHASH_API int rhash_wfile(unsigned hash_id, const wchar_t* filepath, unsigned ch /* RHash information functions */ -/** - * Returns information about a hash function by its hash_id. - * - * @param hash_id the id of hash algorithm - * @return pointer to the rhash_info structure containing the information - */ -const rhash_info* rhash_info_by_id(unsigned hash_id) -{ - hash_id &= RHASH_ALL_HASHES; - /* check that only one bit is set */ - if (hash_id != (hash_id & -(int)hash_id)) return NULL; - /* note: alternative condition is (hash_id == 0 || (hash_id & (hash_id - 1)) != 0) */ - return rhash_info_table[rhash_ctz(hash_id)].info; -} - #if 0 -/** - * Detect default digest output format for given hash algorithm. - * - * @param hash_id the id of hash algorithm - * @return 1 for base32 format, 0 for hexadecimal - */ RHASH_API int rhash_is_base32(unsigned hash_id) { /* fast method is just to test a bit-mask */ @@ -524,12 +418,6 @@ RHASH_API int rhash_is_base32(unsigned hash_id) } #endif -/** - * Returns size of binary digest for given hash algorithm. - * - * @param hash_id the id of hash algorithm - * @return digest size in bytes - */ RHASH_API int rhash_get_digest_size(unsigned hash_id) { hash_id &= RHASH_ALL_HASHES; @@ -537,12 +425,6 @@ RHASH_API int rhash_get_digest_size(unsigned hash_id) return (int)rhash_info_table[rhash_ctz(hash_id)].info->digest_size; } -/** - * Returns length of digest hash string in default output format. - * - * @param hash_id the id of hash algorithm - * @return the length of hash string - */ RHASH_API int rhash_get_hash_length(unsigned hash_id) { const rhash_info* info = rhash_info_by_id(hash_id); @@ -550,26 +432,12 @@ RHASH_API int rhash_get_hash_length(unsigned hash_id) BASE32_LENGTH(info->digest_size) : info->digest_size * 2) : 0); } -/** - * Returns a name of given hash algorithm. - * - * @param hash_id the id of hash algorithm - * @return algorithm name - */ RHASH_API const char* rhash_get_name(unsigned hash_id) { const rhash_info* info = rhash_info_by_id(hash_id); return (info ? info->name : 0); } -/** - * Returns a name part of magnet urn of the given hash algorithm. - * Such magnet_name is used to generate a magnet link of the form - * urn:<magnet_name>=<hash_value>. - * - * @param hash_id the id of hash algorithm - * @return name - */ RHASH_API const char* rhash_get_magnet_name(unsigned hash_id) { const rhash_info* info = rhash_info_by_id(hash_id); @@ -599,7 +467,7 @@ static size_t rhash_get_magnet_url_size(const char* filepath, } if (filepath) { - size += 4 + rhash_urlencode(NULL, filepath); + size += 4 + rhash_urlencode(NULL, filepath, strlen(filepath), 0); } /* loop through hash values */ @@ -610,34 +478,20 @@ static size_t rhash_get_magnet_url_size(const char* filepath, size += (7 + 2) + strlen(name); size += rhash_print(NULL, context, bit, - (bit & (RHASH_SHA1 | RHASH_BTIH) ? RHPR_BASE32 : 0)); + (bit & RHASH_SHA1 ? RHPR_BASE32 : 0)); } return size; } -/** - * Print magnet link with given filepath and calculated hash sums into the - * output buffer. The hash_mask can limit which hash values will be printed. - * The function returns the size of the required buffer. - * If output is NULL the . - * - * @param output a string buffer to receive the magnet link or NULL - * @param filepath the file path to be printed or NULL - * @param context algorithms state - * @param hash_mask bit mask of the hash sums to add to the link - * @param flags can be combination of bits RHPR_UPPERCASE, RHPR_NO_MAGNET, - * RHPR_FILESIZE - * @return number of written characters, including terminating '\0' on success, 0 on fail - */ RHASH_API size_t rhash_print_magnet(char* output, const char* filepath, rhash context, unsigned hash_mask, int flags) { int i; const char* begin = output; - if (output == NULL) return rhash_get_magnet_url_size( - filepath, context, hash_mask, flags); + if (output == NULL) + return rhash_get_magnet_url_size(filepath, context, hash_mask, flags); /* RHPR_NO_MAGNET, RHPR_FILESIZE */ if ((flags & RHPR_NO_MAGNET) == 0) { @@ -652,13 +506,13 @@ RHASH_API size_t rhash_print_magnet(char* output, const char* filepath, *(output++) = '&'; } + flags &= RHPR_UPPERCASE; if (filepath) { strcpy(output, "dn="); output += 3; - output += rhash_urlencode(output, filepath); + output += rhash_urlencode(output, filepath, strlen(filepath), flags); *(output++) = '&'; } - flags &= RHPR_UPPERCASE; for (i = 0; i < 2; i++) { unsigned bit; @@ -679,7 +533,7 @@ RHASH_API size_t rhash_print_magnet(char* output, const char* filepath, output += strlen(name); *(output++) = ':'; output += rhash_print(output, context, bit, - (bit & (RHASH_SHA1 | RHASH_BTIH) ? flags | RHPR_BASE32 : flags)); + (bit & RHASH_SHA1 ? flags | RHPR_BASE32 : flags)); *(output++) = '&'; } } @@ -688,62 +542,39 @@ RHASH_API size_t rhash_print_magnet(char* output, const char* filepath, return (output - begin); } -/* hash sum output */ -/** - * Print a text presentation of a given hash sum to the specified buffer, - * - * @param output a buffer to print the hash to - * @param bytes a hash sum to print - * @param size a size of hash sum in bytes - * @param flags a bit-mask controlling how to format the hash sum, - * can be a mix of the flags: RHPR_RAW, RHPR_HEX, RHPR_BASE32, - * RHPR_BASE64, RHPR_UPPERCASE, RHPR_REVERSE - * @return the number of written characters - */ -size_t rhash_print_bytes(char* output, const unsigned char* bytes, - size_t size, int flags) +/* HASH SUM OUTPUT INTERFACE */ + +size_t rhash_print_bytes(char* output, const unsigned char* bytes, size_t size, int flags) { - size_t str_len; + size_t result_length; int upper_case = (flags & RHPR_UPPERCASE); int format = (flags & ~RHPR_MODIFIER); switch (format) { case RHPR_HEX: - str_len = size * 2; - rhash_byte_to_hex(output, bytes, (unsigned)size, upper_case); + result_length = size * 2; + rhash_byte_to_hex(output, bytes, size, upper_case); break; case RHPR_BASE32: - str_len = BASE32_LENGTH(size); - rhash_byte_to_base32(output, bytes, (unsigned)size, upper_case); + result_length = BASE32_LENGTH(size); + rhash_byte_to_base32(output, bytes, size, upper_case); break; case RHPR_BASE64: - str_len = BASE64_LENGTH(size); - rhash_byte_to_base64(output, bytes, (unsigned)size); + result_length = rhash_base64_url_encoded_helper(output, bytes, size, (flags & RHPR_URLENCODE), upper_case); break; default: - str_len = size; - memcpy(output, bytes, size); + if (flags & RHPR_URLENCODE) { + result_length = rhash_urlencode(output, (char*)bytes, size, upper_case); + } else { + memcpy(output, bytes, size); + result_length = size; + } break; } - return str_len; + return result_length; } -/** - * Print text presentation of a hash sum with given hash_id to the specified - * output buffer. If the hash_id is zero, then print the hash sum with - * the lowest id stored in the hash context. - * The function call fails if the context doesn't include a hash with the - * given hash_id. - * - * @param output a buffer to print the hash to - * @param context algorithms state - * @param hash_id id of the hash sum to print or 0 to print the first hash - * saved in the context. - * @param flags a bitmask controlling how to print the hash. Can contain flags - * RHPR_UPPERCASE, RHPR_HEX, RHPR_BASE32, RHPR_BASE64, etc. - * @return the number of written characters on success or 0 on fail - */ size_t RHASH_API rhash_print(char* output, rhash context, unsigned hash_id, int flags) { const rhash_info* info; @@ -764,15 +595,16 @@ size_t RHASH_API rhash_print(char* output, rhash context, unsigned hash_id, int } if (output == NULL) { + size_t multiplier = (flags & RHPR_URLENCODE ? 3 : 1); switch (flags & RHPR_FORMAT) { case RHPR_HEX: return (digest_size * 2); case RHPR_BASE32: return BASE32_LENGTH(digest_size); case RHPR_BASE64: - return BASE64_LENGTH(digest_size); + return BASE64_LENGTH(digest_size) * multiplier; default: - return digest_size; + return digest_size * multiplier; } } @@ -781,7 +613,8 @@ size_t RHASH_API rhash_print(char* output, rhash context, unsigned hash_id, int if ((flags & ~RHPR_UPPERCASE) == (RHPR_REVERSE | RHPR_HEX)) { /* reverse the digest */ - unsigned char *p = digest, *r = digest + digest_size - 1; + unsigned char* p = digest; + unsigned char* r = digest + digest_size - 1; char tmp; for (; p < r; p++, r--) { tmp = *p; @@ -793,7 +626,7 @@ size_t RHASH_API rhash_print(char* output, rhash context, unsigned hash_id, int return rhash_print_bytes(output, digest, digest_size, flags); } -#if defined(_WIN32) && defined(RHASH_EXPORTS) +#if (defined(_WIN32) || defined(__CYGWIN__)) && defined(RHASH_EXPORTS) #include <windows.h> BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID reserved); BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID reserved) @@ -814,17 +647,8 @@ BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID reserved) } #endif -#define PVOID2UPTR(p) ((rhash_uptr_t)((char*)p - 0)) +#define PVOID2UPTR(p) ((rhash_uptr_t)(((char*)(p)) + 0)) -/** - * Process a rhash message. - * - * @param msg_id message identifier - * @param dst message destination (can be NULL for generic messages) - * @param ldata data depending on message - * @param rdata data depending on message - * @return message-specific data - */ RHASH_API rhash_uptr_t rhash_transmit(unsigned msg_id, void* dst, rhash_uptr_t ldata, rhash_uptr_t rdata) { /* for messages working with rhash context */ @@ -865,6 +689,10 @@ RHASH_API rhash_uptr_t rhash_transmit(unsigned msg_id, void* dst, rhash_uptr_t l case RMSG_GET_OPENSSL_MASK: return rhash_openssl_hash_mask; #endif + case RMSG_GET_OPENSSL_SUPPORTED_MASK: + return rhash_get_openssl_supported_hash_mask(); + case RMSG_GET_OPENSSL_AVAILABLE_MASK: + return rhash_get_openssl_available_hash_mask(); default: return RHASH_ERROR; /* unknown message */ |