AU: Proxy Resolver classes

chrome_proxy_resolver.h

+// Copyright (c) 2010 The Chromium OS 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 CHROMEOS_PLATFORM_UPDATE_ENGINE_CHROME_PROXY_RESOLVER_H__
+#define CHROMEOS_PLATFORM_UPDATE_ENGINE_CHROME_PROXY_RESOLVER_H__
+
+#include <string>
+#include <vector>
+
+#include <curl/curl.h>
+#include <gtest/gtest_prod.h>  // for FRIEND_TEST
+
+#include "update_engine/dbus_interface.h"
+#include "update_engine/proxy_resolver.h"
+
+namespace chromeos_update_engine {
+
+extern const char kSessionManagerService[];
+extern const char kSessionManagerPath[];
+extern const char kSessionManagerInterface[];
+extern const char kSessionManagerRetrievePropertyMethod[];
+extern const char kSessionManagerProxySettingsKey[];
+
+// Class to resolve proxy for a url based on Chrome's proxy settings.
+
+// Currently only supports manual settings, not PAC files or autodetected
+// settings.
+
+class ChromeProxyResolver : public ProxyResolver {
+ public:
+  explicit ChromeProxyResolver(DbusGlibInterface* dbus) : dbus_(dbus) {}
+  virtual ~ChromeProxyResolver() {}
+
+  virtual bool GetProxiesForUrl(const std::string& url,
+                                std::vector<std::string>* out_proxies);
+
+  // Get the curl proxy type for a given proxy url. Returns true on success.
+  // Note: if proxy is kNoProxy, this will return false.
+  static bool GetProxyType(const std::string& proxy,
+                              curl_proxytype* out_type);
+
+ private:
+  FRIEND_TEST(ChromeProxyResolverTest, GetProxiesForUrlWithSettingsTest);
+
+  // Fetches a dbus proxy to session manager. Returns NULL on failure.
+  DBusGProxy* DbusProxy();
+
+  // Fetches the json-encoded proxy settings string from the session manager.
+  bool GetJsonProxySettings(DBusGProxy* proxy, std::string* out_json);
+
+  // Given a |url| and the json encoded settings |json_settings|,
+  // returns the proper proxy servers in |out_proxies|. Returns true on
+  // success.
+  bool GetProxiesForUrlWithSettings(const std::string& url,
+                                    const std::string& json_settings,
+                                    std::vector<std::string>* out_proxies);
+
+  DbusGlibInterface* dbus_;
+  
+  DISALLOW_COPY_AND_ASSIGN(ChromeProxyResolver);
+};
+
+}  // namespace chromeos_update_engine
+
+#endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_CHROME_PROXY_RESOLVER_H__