Chrome proxy refactoring.

chrome/service/cloud_print/cloud_print_auth.h

Index: chrome/service/cloud_print/cloud_print_auth.h
===================================================================
--- chrome/service/cloud_print/cloud_print_auth.h	(revision 0)
+++ chrome/service/cloud_print/cloud_print_auth.h	(revision 0)
@@ -0,0 +1,114 @@
+// Copyright (c) 2011 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 CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_AUTH_H_
+#define CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_AUTH_H_
+#pragma once
+
+#include <string>
+
+#include "base/values.h"
+#include "chrome/common/net/gaia/gaia_oauth_client.h"
+#include "chrome/service/cloud_print/cloud_print_url_fetcher.h"
+#include "googleurl/src/gurl.h"
+
+// CloudPrintAuth is a class to handle login, token refresh, and other
+// authentication tasks for Cloud Print.
+// CloudPrintAuth will create new robot account for this proxy if needed.
+// CloudPrintAuth will obtain new OAuth token.
+// CloudPrintAuth will schedule periodic OAuth token refresh
+// It is running in the same thread as CloudPrintProxyBackend::Core.
+class CloudPrintAuth
+    : public base::RefCountedThreadSafe<CloudPrintAuth>,
+      public CloudPrintURLFetcherDelegate,
+      public gaia::GaiaOAuthClient::Delegate {
+ public:
+  class Client {
+   public:
+    virtual void OnAuthenticationComplete(
+        const std::string& access_token,
+        const std::string& robot_oauth_refresh_token,
+        const std::string& robot_email,
+        const std::string& user_email) = 0;
+    virtual void OnInvalidCredentials() = 0;
+   protected:
+     virtual ~Client() {}
+  };
+
+  CloudPrintAuth(Client* client,
+                 const GURL& cloud_print_server_url,
+                 const base::DictionaryValue* print_sys_settings,
+                 const gaia::OAuthClientInfo& oauth_client_info,
+                 const std::string& proxy_id);
+  virtual ~CloudPrintAuth();
+
+  // Note:
+  //
+  // The Authenticate* methods are the various entry points from
+  // CloudPrintProxyBackend::Core. It calls us on a dedicated thread to
+  // actually perform synchronous (and potentially blocking) operations.
+  //
+  // When we are passed in an LSID we authenticate using that
+  // and retrieve new auth tokens.
+  void AuthenticateWithLsid(const std::string& lsid,
+                            const std::string& last_robot_refresh_token,
+                            const std::string& last_robot_email,
+                            const std::string& last_user_email);
+
+  void AuthenticateWithToken(const std::string cloud_print_token);
+  void AuthenticateWithRobotToken(const std::string& robot_oauth_refresh_token,
+                                  const std::string& robot_email);
+  void AuthenticateWithRobotAuthCode(const std::string& robot_oauth_auth_code,
+                                     const std::string& robot_email);
+
+  void RefreshAccessToken();
+
+  // gaia::GaiaOAuthClient::Delegate implementation.
+  virtual void OnGetTokensResponse(const std::string& refresh_token,
+                                   const std::string& access_token,
+                                   int expires_in_seconds);
+  virtual void OnRefreshTokenResponse(const std::string& access_token,
+                                      int expires_in_seconds);
+  virtual void OnOAuthError();
+  virtual void OnNetworkError(int response_code);
+
+  // CloudPrintURLFetcher::Delegate implementation.
+  virtual CloudPrintURLFetcher::ResponseAction HandleJSONData(
+      const content::URLFetcher* source,
+      const GURL& url,
+      base::DictionaryValue* json_data,
+      bool succeeded);
+  virtual CloudPrintURLFetcher::ResponseAction OnRequestAuthError();
+  virtual std::string GetAuthHeader();
+
+ private:
+  Client* client_;
+  gaia::OAuthClientInfo oauth_client_info_;
+  scoped_ptr<gaia::GaiaOAuthClient> oauth_client_;
+  scoped_ptr<DictionaryValue> print_system_settings_;
+
+  // The CloudPrintURLFetcher instance for the current request.
+  scoped_refptr<CloudPrintURLFetcher> request_;
+
+  GURL cloud_print_server_url_;
+  // Proxy id, need to send to the cloud print server to find and update
+  // necessary printers during the migration process.
+  const std::string& proxy_id_;
+  // The OAuth2 refresh token for the robot.
+  std::string refresh_token_;
+  // The email address of the user. This is only used during initial
+  // authentication with an LSID. This is only used for storing in prefs for
+  // display purposes.
+  std::string user_email_;
+  // The email address of the robot account.
+  std::string robot_email_;
+  // client login token used to authenticate request to cloud print server to
+  // get the robot account.
+  std::string client_login_token_;
+
+  DISALLOW_COPY_AND_ASSIGN(CloudPrintAuth);
+};
+
+#endif  // CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_AUTH_H_
+