clamav/libclamav/matcher-hash-types.h
Valerie Snyder 27fe03c751
Fix OpenSSL 1 compatibility issue, plus minor improvements
For OpenSSL 1, `EVP_get_digestbyname()` will fail with "sha2-*" algorithm names.
Must use "sha256", etc.

I made a shim that does the conversion, and I made an improvement to ignore case
when converting alg names to our hash type enumeration.

Other fixes for a few warnings.
2025-08-18 12:27:10 -04:00

72 lines
2 KiB
C

/*
* Copyright (C) 2013-2025 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
* Copyright (C) 2010-2013 Sourcefire, Inc.
*
* Authors: aCaB
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#ifndef __MATCHER_HASH_TYPES_H
#define __MATCHER_HASH_TYPES_H
typedef enum cli_hash_type {
CLI_HASH_MD5 = 0,
CLI_HASH_SHA1,
CLI_HASH_SHA2_256,
CLI_HASH_SHA2_384,
CLI_HASH_SHA2_512,
} cli_hash_type_t;
#define CLI_HASH_AVAIL_TYPES (CLI_HASH_SHA2_256 + 1)
/**
* @brief Get the name of the hash type as a string.
*
* @param type The hash type.
* @return char* The name of the hash type.
*/
const char* cli_hash_name(cli_hash_type_t type);
/**
* @brief Get OpenSSL's name of the hash type as a string.
*
* Needed because older versions of OpenSSL aren't familiar with "sha2-256",
* "sha2-384", and "sha2-512".
*
* @param alg The name of the hash algorithm.
* @return char* The OpenSSL name of the hash algorithm.
*/
const char *to_openssl_alg(const char *alg);
/**
* @brief Get the size of the hash type.
*
* @param type The hash type.
* @return size_t The size of the hash type.
*/
size_t cli_hash_len(cli_hash_type_t type);
/**
* @brief Get the hash type from its name.
*
* @param name The name of the hash type.
* @return cli_hash_type_t The hash type.
*/
cl_error_t cli_hash_type_from_name(const char* name, cli_hash_type_t* type_out);
#define CLI_HASHLEN_MAX SHA256_HASH_SIZE
#endif