| // Copyright 2017 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. |
| |
| #ifndef COBALT_LOADER_CACHE_FETCHER_H_ |
| #define COBALT_LOADER_CACHE_FETCHER_H_ |
| |
| #include <limits> |
| #include <string> |
| #include <vector> |
| |
| #include "base/callback.h" |
| #include "base/memory/weak_ptr.h" |
| #include "cobalt/csp/content_security_policy.h" |
| #include "cobalt/loader/fetcher.h" |
| |
| namespace cobalt { |
| namespace loader { |
| |
| extern const char kCacheScheme[]; |
| |
| // CacheFetcher is for fetching data in the system cache, |
| // kSbSystemPathCacheDirectory. Cached splash screen HTML documents |
| // are stored there, for instance. Their subpaths are based on the |
| // initial URL they correspond to and must be fully specified in the |
| // URL passed into CacheFetcher. See SplashScreenCache for an example usage. |
| class CacheFetcher : public Fetcher { |
| public: |
| CacheFetcher( |
| const GURL& url, const csp::SecurityCallback& security_callback, |
| Handler* handler, |
| const base::Callback<int(const std::string&, scoped_array<char>*)>& |
| read_cache_callback = |
| base::Callback<int(const std::string&, scoped_array<char>*)>()); |
| |
| ~CacheFetcher() OVERRIDE; |
| |
| private: |
| void Fetch(); |
| void GetCacheData(const std::string& key); |
| bool IsAllowedByCsp(); |
| |
| GURL url_; |
| csp::SecurityCallback security_callback_; |
| base::WeakPtrFactory<CacheFetcher> weak_ptr_factory_; |
| base::Callback<int(const std::string&, scoped_array<char>*)> |
| read_cache_callback_; |
| }; |
| |
| } // namespace loader |
| } // namespace cobalt |
| |
| #endif // COBALT_LOADER_CACHE_FETCHER_H_ |