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9574842e90
When assigning pointers to functions in an OSSL_DISPATCH table, we try to ensure that those functions are properly defined or declared with an extra declaration using the corresponding function typedefs that are defined by include/openssl/core_dispatch.h. For the core dispatch table, found in crypto/provider_core.c, it seems we forgot this habit, and thus didn't ensure well enough that the function pointers that are assigned in the table can actually be used for those dispatch table indexes. This change adds all the missing declarations, and compensates for differences with functions that do the necessary casting, making those explicit rather than implicit, thereby trying to assure that we know what we're doing. One function is not fixed in this change, because there's a controversy, a clash between the signature of BIO_ctrl() and OSSL_FUNC_BIO_ctrl_fn. They have different return types. Reviewed-by: Paul Dale <pauli@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/18198)
129 lines
4.0 KiB
C
129 lines
4.0 KiB
C
/*
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* Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/*
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* Licensed under the Apache License 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* https://www.openssl.org/source/license.html
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* or in the file LICENSE in the source distribution.
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*/
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#ifndef OSSL_CRYPTO_RAND_H
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# define OSSL_CRYPTO_RAND_H
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# pragma once
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# include <openssl/rand.h>
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# include "crypto/rand_pool.h"
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# if defined(__APPLE__) && !defined(OPENSSL_NO_APPLE_CRYPTO_RANDOM)
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# include <Availability.h>
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# if (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 101200) || \
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(defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 80000)
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# define OPENSSL_APPLE_CRYPTO_RANDOM 1
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# include <CommonCrypto/CommonCryptoError.h>
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# include <CommonCrypto/CommonRandom.h>
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# endif
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# endif
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/*
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* Defines related to seed sources
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*/
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#ifndef DEVRANDOM
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/*
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* set this to a comma-separated list of 'random' device files to try out. By
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* default, we will try to read at least one of these files
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*/
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# define DEVRANDOM "/dev/urandom", "/dev/random", "/dev/hwrng", "/dev/srandom"
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# if defined(__linux) && !defined(__ANDROID__)
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# ifndef DEVRANDOM_WAIT
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# define DEVRANDOM_WAIT "/dev/random"
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# endif
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/*
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* Linux kernels 4.8 and later changes how their random device works and there
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* is no reliable way to tell that /dev/urandom has been seeded -- getentropy(2)
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* should be used instead.
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*/
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# ifndef DEVRANDOM_SAFE_KERNEL
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# define DEVRANDOM_SAFE_KERNEL 4, 8
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# endif
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/*
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* Some operating systems do not permit select(2) on their random devices,
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* defining this to zero will force the use of read(2) to extract one byte
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* from /dev/random.
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*/
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# ifndef DEVRANDM_WAIT_USE_SELECT
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# define DEVRANDM_WAIT_USE_SELECT 1
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# endif
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/*
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* Define the shared memory identifier used to indicate if the operating
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* system has properly seeded the DEVRANDOM source.
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*/
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# ifndef OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID
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# define OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID 114
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# endif
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# endif
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#endif
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#if !defined(OPENSSL_NO_EGD) && !defined(DEVRANDOM_EGD)
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/*
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* set this to a comma-separated list of 'egd' sockets to try out. These
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* sockets will be tried in the order listed in case accessing the device
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* files listed in DEVRANDOM did not return enough randomness.
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*/
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# define DEVRANDOM_EGD "/var/run/egd-pool", "/dev/egd-pool", "/etc/egd-pool", "/etc/entropy"
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#endif
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void ossl_rand_cleanup_int(void);
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/*
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* Initialise the random pool reseeding sources.
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*
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* Returns 1 on success and 0 on failure.
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*/
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int ossl_rand_pool_init(void);
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/*
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* Finalise the random pool reseeding sources.
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*/
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void ossl_rand_pool_cleanup(void);
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/*
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* Control the random pool use of open file descriptors.
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*/
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void ossl_rand_pool_keep_random_devices_open(int keep);
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/*
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* Configuration
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*/
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void ossl_random_add_conf_module(void);
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/*
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* Get and cleanup random seed material.
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*/
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size_t ossl_rand_get_entropy(ossl_unused const OSSL_CORE_HANDLE *handle,
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unsigned char **pout, int entropy,
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size_t min_len, size_t max_len);
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void ossl_rand_cleanup_entropy(ossl_unused const OSSL_CORE_HANDLE *handle,
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unsigned char *buf, size_t len);
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size_t ossl_rand_get_nonce(ossl_unused const OSSL_CORE_HANDLE *handle,
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unsigned char **pout, size_t min_len, size_t max_len,
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const void *salt, size_t salt_len);
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void ossl_rand_cleanup_nonce(ossl_unused const OSSL_CORE_HANDLE *handle,
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unsigned char *buf, size_t len);
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/*
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* Get seeding material from the operating system sources.
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*/
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size_t ossl_pool_acquire_entropy(RAND_POOL *pool);
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int ossl_pool_add_nonce_data(RAND_POOL *pool);
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#endif
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