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hackney

3.0.3
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Simple HTTP client with HTTP/1.1, HTTP/2, and HTTP/3 support

Security advisory: This version has known vulnerabilities. View advisories
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hackney c_src boringssl crypto rand getentropy.cc
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c_src/boringssl/crypto/rand/getentropy.cc 

// Copyright 2023 The BoringSSL Authors

//

// Licensed 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

//

//     https://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.



#if !defined(_DEFAULT_SOURCE)

#define _DEFAULT_SOURCE  // Needed for getentropy on musl and glibc

#endif



#include <openssl/rand.h>



#include "../bcm_support.h"

#include "internal.h"



#if defined(OPENSSL_RAND_GETENTROPY)



#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>



#if defined(OPENSSL_MACOS) || defined(OPENSSL_FUCHSIA)

#include <sys/random.h>

#endif



void CRYPTO_init_sysrand(void) {}



// CRYPTO_sysrand puts |requested| random bytes into |out|.

void CRYPTO_sysrand(uint8_t *out, size_t requested) {

  while (requested > 0) {

    // |getentropy| can only request 256 bytes at a time.

    size_t todo = requested <= 256 ? requested : 256;

    if (getentropy(out, todo) != 0) {

      perror("getentropy() failed");

      abort();

    }



    out += todo;

    requested -= todo;

  }

}



#endif  // OPENSSL_RAND_GETENTROPY