| // Copyright 2021 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef NET_DNS_DNS_CONFIG_SERVICE_ANDROID_H_ |
| #define NET_DNS_DNS_CONFIG_SERVICE_ANDROID_H_ |
| |
| #include <memory> |
| |
| #include "base/time/time.h" |
| #include "net/android/network_library.h" |
| #include "net/base/net_export.h" |
| #include "net/dns/dns_config_service.h" |
| |
| namespace net { |
| |
| // Use DnsConfigService::CreateSystemService to use it outside of tests. |
| namespace internal { |
| |
| // Service for reading and watching Android system DNS settings. This object is |
| // not thread-safe and methods may perform blocking I/O so methods must be |
| // called on a sequence that allows blocking (i.e. base::MayBlock). It may be |
| // constructed on a different sequence than which it's later called on. |
| class NET_EXPORT_PRIVATE DnsConfigServiceAndroid : public DnsConfigService { |
| public: |
| static constexpr base::TimeDelta kConfigChangeDelay = base::Milliseconds(50); |
| |
| DnsConfigServiceAndroid(); |
| ~DnsConfigServiceAndroid() override; |
| |
| DnsConfigServiceAndroid(const DnsConfigServiceAndroid&) = delete; |
| DnsConfigServiceAndroid& operator=(const DnsConfigServiceAndroid&) = delete; |
| |
| // To be effective, must be called before the first config read. Also, may |
| // outlive `this` and be run on other sequences. |
| void set_dns_server_getter_for_testing( |
| android::DnsServerGetter dns_server_getter) { |
| dns_server_getter_ = std::move(dns_server_getter); |
| } |
| |
| protected: |
| // DnsConfigService: |
| void ReadConfigNow() override; |
| bool StartWatching() override; |
| |
| private: |
| class Watcher; |
| class ConfigReader; |
| |
| std::unique_ptr<Watcher> watcher_; |
| std::unique_ptr<ConfigReader> config_reader_; |
| android::DnsServerGetter dns_server_getter_; |
| }; |
| |
| } // namespace internal |
| } // namespace net |
| |
| #endif // NET_DNS_DNS_CONFIG_SERVICE_ANDROID_H_ |