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/*
* Copyright 2018 Google
*
* 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
*
* 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.
*/
#include "Firestore/core/src/firebase/firestore/util/secure_random.h"
#include "Firestore/core/src/firebase/firestore/util/config.h"
#if HAVE_OPENSSL_RAND_H
#include "openssl/err.h"
#include "openssl/rand.h"
namespace firebase {
namespace firestore {
namespace util {
SecureRandom::result_type SecureRandom::operator()() {
result_type result;
int rc = RAND_bytes(reinterpret_cast<uint8_t*>(&result), sizeof(result));
if (rc <= 0) {
// OpenSSL's RAND_bytes can fail if there's not enough entropy. BoringSSL
// won't fail this way.
ERR_print_errors_fp(stderr);
abort();
}
return result;
}
} // namespace util
} // namespace firestore
} // namespace firebase
#endif // HAVE_OPENSSL_RAND_H
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