| /* |
| * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef WEBRTC_BASE_HELPERS_H_ |
| #define WEBRTC_BASE_HELPERS_H_ |
| |
| #include <string> |
| #include "webrtc/base/basictypes.h" |
| |
| namespace rtc { |
| |
| // For testing, we can return predictable data. |
| void SetRandomTestMode(bool test); |
| |
| // Initializes the RNG, and seeds it with the specified entropy. |
| bool InitRandom(int seed); |
| bool InitRandom(const char* seed, size_t len); |
| |
| // Generates a (cryptographically) random string of the given length. |
| // We generate base64 values so that they will be printable. |
| // WARNING: could silently fail. Use the version below instead. |
| std::string CreateRandomString(size_t length); |
| |
| // Generates a (cryptographically) random string of the given length. |
| // We generate base64 values so that they will be printable. |
| // Return false if the random number generator failed. |
| bool CreateRandomString(size_t length, std::string* str); |
| |
| // Generates a (cryptographically) random string of the given length, |
| // with characters from the given table. Return false if the random |
| // number generator failed. |
| bool CreateRandomString(size_t length, const std::string& table, |
| std::string* str); |
| |
| // Generates a random id. |
| uint32_t CreateRandomId(); |
| |
| // Generates a 64 bit random id. |
| uint64_t CreateRandomId64(); |
| |
| // Generates a random id > 0. |
| uint32_t CreateRandomNonZeroId(); |
| |
| // Generates a random double between 0.0 (inclusive) and 1.0 (exclusive). |
| double CreateRandomDouble(); |
| |
| } // namespace rtc |
| |
| #endif // WEBRTC_BASE_HELPERS_H_ |