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📁 ..
📄 apr-x86_64.h(17.91 KB)
📄 apr.h(636 B)
📄 apr_allocator.h(6.07 KB)
📄 apr_anylock.h(4.93 KB)
📄 apr_atomic.h(6.04 KB)
📄 apr_base64.h(3.75 KB)
📄 apr_buckets.h(63.15 KB)
📄 apr_crypto.h(19.68 KB)
📄 apr_cstr.h(11.13 KB)
📄 apr_date.h(3.47 KB)
📄 apr_dbd.h(23.35 KB)
📄 apr_dbm.h(8.4 KB)
📄 apr_dso.h(2.64 KB)
📄 apr_encode.h(30.35 KB)
📄 apr_env.h(2.06 KB)
📄 apr_errno.h(53.77 KB)
📄 apr_escape.h(17.23 KB)
📄 apr_file_info.h(17.17 KB)
📄 apr_file_io.h(42.88 KB)
📄 apr_fnmatch.h(6.08 KB)
📄 apr_general.h(7.34 KB)
📄 apr_getopt.h(5.84 KB)
📄 apr_global_mutex.h(7.19 KB)
📄 apr_hash.h(10.08 KB)
📄 apr_hooks.h(12.36 KB)
📄 apr_inherit.h(2.09 KB)
📄 apr_ldap.h(5.57 KB)
📄 apr_ldap_init.h(5.64 KB)
📄 apr_ldap_option.h(8.4 KB)
📄 apr_ldap_rebind.h(3.09 KB)
📄 apr_ldap_url.h(3.71 KB)
📄 apr_lib.h(8.23 KB)
📄 apr_md4.h(4.42 KB)
📄 apr_md5.h(6.2 KB)
📄 apr_memcache.h(16.82 KB)
📄 apr_mmap.h(5.01 KB)
📄 apr_network_io.h(36.02 KB)
📄 apr_optional.h(2.71 KB)
📄 apr_optional_hooks.h(3.78 KB)
📄 apr_perms_set.h(1.86 KB)
📄 apr_poll.h(20.6 KB)
📄 apr_pools.h(30.94 KB)
📄 apr_portable.h(20.02 KB)
📄 apr_proc_mutex.h(6.85 KB)
📄 apr_queue.h(3.98 KB)
📄 apr_random.h(4.92 KB)
📄 apr_redis.h(15.62 KB)
📄 apr_reslist.h(7.01 KB)
📄 apr_ring.h(18.78 KB)
📄 apr_rmm.h(4.67 KB)
📄 apr_sdbm.h(5.97 KB)
📄 apr_sha1.h(3.79 KB)
📄 apr_shm.h(9.26 KB)
📄 apr_signal.h(2.7 KB)
📄 apr_siphash.h(6.01 KB)
📄 apr_skiplist.h(14.19 KB)
📄 apr_strings.h(14.55 KB)
📄 apr_strmatch.h(2.61 KB)
📄 apr_support.h(1.6 KB)
📄 apr_tables.h(18.9 KB)
📄 apr_thread_cond.h(5.4 KB)
📄 apr_thread_mutex.h(4.39 KB)
📄 apr_thread_pool.h(10.84 KB)
📄 apr_thread_proc.h(36.8 KB)
📄 apr_thread_rwlock.h(4.65 KB)
📄 apr_time.h(7.39 KB)
📄 apr_uri.h(6.43 KB)
📄 apr_user.h(5.19 KB)
📄 apr_uuid.h(2.05 KB)
📄 apr_version.h(5.22 KB)
📄 apr_want.h(2.89 KB)
📄 apr_xlate.h(6.26 KB)
📄 apr_xml.h(12.19 KB)
📄 apu.h(4.22 KB)
📄 apu_errno.h(5.32 KB)
📄 apu_version.h(4.2 KB)
📄 apu_want.h(1.45 KB)

Editing: apr_random.h

/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef APR_RANDOM_H
#define APR_RANDOM_H

/**
 * @file apr_random.h
 * @brief APR PRNG routines
 */

#include "apr_pools.h"
#include "apr_thread_proc.h"

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

/**
 * @defgroup apr_random PRNG Routines
 * @ingroup APR
 * @{
 */

typedef struct apr_crypto_hash_t apr_crypto_hash_t;

typedef void apr_crypto_hash_init_t(apr_crypto_hash_t *hash);
typedef void apr_crypto_hash_add_t(apr_crypto_hash_t *hash, const void *data,
                                   apr_size_t bytes);
typedef void apr_crypto_hash_finish_t(apr_crypto_hash_t *hash,
                                      unsigned char *result);

/* FIXME: make this opaque */
struct apr_crypto_hash_t {
    apr_crypto_hash_init_t *init;
    apr_crypto_hash_add_t *add;
    apr_crypto_hash_finish_t *finish;
    apr_size_t size;
    void *data;
};

/**
 * Allocate and initialize the SHA-256 context
 * @param p The pool to allocate from
 */
APR_DECLARE(apr_crypto_hash_t *) apr_crypto_sha256_new(apr_pool_t *p);

/** Opaque PRNG structure. */
typedef struct apr_random_t apr_random_t;

/**
 * Initialize a PRNG state
 * @param g The PRNG state
 * @param p The pool to allocate from
 * @param pool_hash Pool hash functions
 * @param key_hash Key hash functions
 * @param prng_hash PRNG hash functions
 */
APR_DECLARE(void) apr_random_init(apr_random_t *g, apr_pool_t *p,
                                  apr_crypto_hash_t *pool_hash,
                                  apr_crypto_hash_t *key_hash,
                                  apr_crypto_hash_t *prng_hash);
/**
 * Allocate and initialize (apr_crypto_sha256_new) a new PRNG state.
 * @param p The pool to allocate from
 */
APR_DECLARE(apr_random_t *) apr_random_standard_new(apr_pool_t *p);

/**
 * Mix the randomness pools.
 * @param g The PRNG state
 * @param entropy_ Entropy buffer
 * @param bytes Length of entropy_ in bytes
 */
APR_DECLARE(void) apr_random_add_entropy(apr_random_t *g,
                                         const void *entropy_,
                                         apr_size_t bytes);
/**
 * Generate cryptographically insecure random bytes.
 * @param g The RNG state
 * @param random Buffer to fill with random bytes
 * @param bytes Length of buffer in bytes
 */
APR_DECLARE(apr_status_t) apr_random_insecure_bytes(apr_random_t *g,
                                                    void *random,
                                                    apr_size_t bytes);

/**
 * Generate cryptographically secure random bytes.
 * @param g The RNG state
 * @param random Buffer to fill with random bytes
 * @param bytes Length of buffer in bytes
 */
APR_DECLARE(apr_status_t) apr_random_secure_bytes(apr_random_t *g,
                                                  void *random,
                                                  apr_size_t bytes);
/**
 * Ensures that E bits of conditional entropy are mixed into the PRNG
 * before any further randomness is extracted.
 * @param g The RNG state
 */
APR_DECLARE(void) apr_random_barrier(apr_random_t *g);

/**
 * Return APR_SUCCESS if the cryptographic PRNG has been seeded with
 * enough data, APR_ENOTENOUGHENTROPY otherwise.
 * @param r The RNG state
 */
APR_DECLARE(apr_status_t) apr_random_secure_ready(apr_random_t *r);

/**
 * Return APR_SUCCESS if the PRNG has been seeded with enough data,
 * APR_ENOTENOUGHENTROPY otherwise.
 * @param r The PRNG state
 */
APR_DECLARE(apr_status_t) apr_random_insecure_ready(apr_random_t *r);

/**
 * Mix the randomness pools after forking.
 * @param proc The resulting process handle from apr_proc_fork()
 * @remark Call this in the child after forking to mix the randomness
 * pools. Note that its generally a bad idea to fork a process with a
 * real PRNG in it - better to have the PRNG externally and get the
 * randomness from there. However, if you really must do it, then you
 * should supply all your entropy to all the PRNGs - don't worry, they
 * won't produce the same output.
 * @remark Note that apr_proc_fork() calls this for you, so only weird
 * applications need ever call it themselves.
 * @internal
 */
APR_DECLARE(void) apr_random_after_fork(apr_proc_t *proc);

/** @} */

#ifdef __cplusplus
}
#endif

#endif /* !APR_RANDOM_H */

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