| // Copyright 2013 Google Inc. All Rights Reserved. |
| // |
| // 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. |
| |
| // Author: jmaessen@google.com (Jan-Willem Maessen) |
| |
| #ifndef PAGESPEED_KERNEL_UTIL_INPUT_FILE_NONCE_GENERATOR_H_ |
| #define PAGESPEED_KERNEL_UTIL_INPUT_FILE_NONCE_GENERATOR_H_ |
| |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/base/file_system.h" |
| #include "pagespeed/kernel/util/nonce_generator.h" |
| |
| namespace net_instaweb { |
| |
| class AbstractMutex; |
| class MessageHandler; |
| |
| // Implements a NonceGenerator that simply draws data from a cryptographic file |
| // such as /dev/urandom. |
| class InputFileNonceGenerator : public NonceGenerator { |
| public: |
| // Takes ownership of file and mutex, but not of handler or file_system. |
| InputFileNonceGenerator(FileSystem::InputFile* file, FileSystem* file_system, |
| AbstractMutex* mutex, MessageHandler* handler) |
| : NonceGenerator(mutex), file_(file), |
| file_system_(file_system), handler_(handler) { } |
| virtual ~InputFileNonceGenerator(); |
| |
| protected: |
| virtual uint64 NewNonceImpl(); |
| |
| private: |
| FileSystem::InputFile* file_; |
| FileSystem* file_system_; |
| MessageHandler* handler_; |
| |
| DISALLOW_COPY_AND_ASSIGN(InputFileNonceGenerator); |
| }; |
| |
| } // namespace net_instaweb |
| |
| #endif // PAGESPEED_KERNEL_UTIL_INPUT_FILE_NONCE_GENERATOR_H_ |