Refactored mobile activation engine outside of WebUI handler in order to expose its state to other …

chrome/browser/chromeos/mobile/mobile_activator.h

Index: chrome/browser/chromeos/mobile/mobile_activator.h
diff --git a/chrome/browser/chromeos/mobile/mobile_activator.h b/chrome/browser/chromeos/mobile/mobile_activator.h
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+// Copyright (c) 2012 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_BROWSER_CHROMEOS_MOBILE_MOBILE_ACTIVATOR_H_
+#define CHROME_BROWSER_CHROMEOS_MOBILE_MOBILE_ACTIVATOR_H_
+#pragma once
+
+#include <map>
+#include <string>
+
+#include "base/file_path.h"
+#include "base/memory/singleton.h"
+#include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
+#include "chrome/browser/chromeos/cros/network_library.h"
+
+namespace chromeos {
+
+// Cellular plan config document.
+class CellularConfigDocument
+    : public base::RefCountedThreadSafe<CellularConfigDocument> {
+ public:
+  CellularConfigDocument();
+  virtual ~CellularConfigDocument();
+
+  // Return error message for a given code.
+  std::string GetErrorMessage(const std::string& code);
+  void LoadCellularConfigFile();
+  const std::string& version() { return version_; }
+
+ private:
+  typedef std::map<std::string, std::string> ErrorMap;
+
+  void SetErrorMap(const ErrorMap& map);
+  bool LoadFromFile(const FilePath& config_path);
+
+  std::string version_;
+  ErrorMap error_map_;
+  base::Lock config_lock_;
+
+  DISALLOW_COPY_AND_ASSIGN(CellularConfigDocument);
+};
+
+// This class performs mobile plan activation process.
+class MobileActivator
+  : public NetworkLibrary::NetworkManagerObserver,
+    public NetworkLibrary::NetworkObserver,
+    public base::SupportsWeakPtr<MobileActivator> {
+ public:
+  // Activation state.
+  enum PlanActivationState {
+    // Activation WebUI page is loading, activation not started.
+    PLAN_ACTIVATION_PAGE_LOADING            = -1,
+    // Activation process started.
+    PLAN_ACTIVATION_START                   = 0,
+    // Initial over the air activation attempt.
+    PLAN_ACTIVATION_TRYING_OTASP            = 1,
+    // Reconnection after the initial activation attempt.
+    PLAN_ACTIVATION_RECONNECTING_OTASP_TRY  = 2,
+    // Performing pre-activation process.
+    PLAN_ACTIVATION_INITIATING_ACTIVATION   = 3,
+    // Reconnecting to network.
+    PLAN_ACTIVATION_RECONNECTING            = 4,
+    // Loading payment portal page.
+    PLAN_ACTIVATION_PAYMENT_PORTAL_LOADING  = 5,
+    // Showing payment portal page.
+    PLAN_ACTIVATION_SHOWING_PAYMENT         = 6,
+    // Reconnecting after successful plan payment.
+    PLAN_ACTIVATION_RECONNECTING_PAYMENT    = 7,
+    // Delaying activation until payment portal catches up.
+    PLAN_ACTIVATION_DELAY_OTASP             = 8,
+    // Starting post-payment activation attempt.
+    PLAN_ACTIVATION_START_OTASP             = 9,
+    // Attempting activation.
+    PLAN_ACTIVATION_OTASP                   = 10,
+    // Reconnecting after activation attempt.
+    PLAN_ACTIVATION_RECONNECTING_OTASP      = 11,
+    // Finished activation.
+    PLAN_ACTIVATION_DONE                    = 12,
+    // Error occured during activation process.
+    PLAN_ACTIVATION_ERROR                   = 0xFF,
+  };
+
+  // Activation process observer.
+  class Observer {
+   public:
+    // Signals activation |state| change for given |network|.
+    virtual void OnActivationStateChanged(
+        CellularNetwork* network,
+        PlanActivationState state,
+        const std::string& error_description) = 0;
+
+   protected:
+    Observer() {}
+    virtual ~Observer() {}
+  };
+
+  static MobileActivator* GetInstance();
+
+  // Add/remove activation process observer.
+  void AddObserver(Observer* observer);
+  void RemoveObserver(Observer* observer);
+
+  // Activation is in process.
+  bool RunningActivation() const;
+  // Activation state.
+  PlanActivationState state() const { return state_; }
+  // Initiates activation process.
+  void InitiateActivation(const std::string& service_path);
+  // Terminates activation process if already started.
+  void TerminateActivation();
+  // Process portal load attempt status.
+  void OnPortalLoaded(bool success);
+  // Process payment transaction status.
+  void OnSetTransactionStatus(bool success);
+
+ private:
+  friend struct DefaultSingletonTraits<MobileActivator>;
+
+  MobileActivator();
+  virtual ~MobileActivator();
+
+  // NetworkLibrary::NetworkManagerObserver overrides.
+  virtual void OnNetworkManagerChanged(NetworkLibrary* obj) OVERRIDE;
+  // NetworkLibrary::NetworkObserver overrides.
+  virtual void OnNetworkChanged(NetworkLibrary* obj,
+                                const Network* network) OVERRIDE;
+
+  // Continue activation after inital setup (config load).
+  void ContinueActivation();
+  // Process payment transaction results.
+  void SetTransactionStatus(bool success);
+  // Starts activation.
+  void StartActivation();
+  // Retried OTASP.
+  void RetryOTASP();
+  // Continues activation process. This method is called after we disconnect
+  // due to detected connectivity issue to kick off reconnection.
+  void ContinueConnecting(int delay);
+
+  // Sends message to host registration page with system/user info data.
+  void SendDeviceInfo();
+
+  // Callback for when |reconnect_timer_| fires.
+  void ReconnectTimerFired();
+  // Starts OTASP process.
+  void StartOTASP();
+  // Checks if we need to reconnect due to failed connection attempt.
+  bool NeedsReconnecting(CellularNetwork* network,
+                         PlanActivationState* new_state,
+                         std::string* error_description);
+  // Disconnect from network.
+  void DisconnectFromNetwork(CellularNetwork* network);
+  // Connects to cellular network, resets connection timer.
+  bool ConnectToNetwork(CellularNetwork* network, int delay);
+  // Forces disconnect / reconnect when we detect portal connectivity issues.
+  void ForceReconnect(CellularNetwork* network, int delay);
+  // Reports connection timeout.
+  bool ConnectionTimeout();
+  // Verify the state of cellular network and modify internal state.
+  void EvaluateCellularNetwork(CellularNetwork* network);
+  // Check the current cellular network for error conditions.
+  bool GotActivationError(CellularNetwork* network,
+                          std::string* error);
+  // Sends status updates to WebUI page.
+  void UpdatePage(CellularNetwork* network,
+                  const std::string& error_description);
+  // Changes internal state.
+  void ChangeState(CellularNetwork* network,
+                   PlanActivationState new_state,
+                   const std::string& error_description);
+  // Prepares network devices for cellular activation process.
+  void SetupActivationProcess(CellularNetwork* network);
+  // Disables ethernet and wifi newtorks since they interefere with
+  // detection of restricted pool on cellular side.
+  void DisableOtherNetworks();
+  // Resets network devices after cellular activation process.
+  // |network| should be NULL if the activation process failed.
+  void CompleteActivation(CellularNetwork* network);
+  // Control routines for handling other types of connections during
+  // cellular activation.
+  void ReEnableOtherConnections();
+  // Return error message for a given code.
+  std::string GetErrorMessage(const std::string& code);
+
+  // Converts the currently active CellularNetwork device into a JS object.
+  static void GetDeviceInfo(CellularNetwork* network,
+                            DictionaryValue* value);
+  static bool ShouldReportDeviceState(std::string* state, std::string* error);
+
+  // Performs activation state cellular device evaluation.
+  // Returns false if device activation failed. In this case |error|
+  // will contain error message to be reported to Web UI.
+  static bool EvaluateCellularDeviceState(bool* report_status,
+                                          std::string* state,
+                                          std::string* error);
+  // Finds cellular network given device |meid|, reattach network change
+  // observer if |reattach_observer| flag is set.
+  CellularNetwork* FindCellularNetworkByMeid(const std::string& meid,
+                                             bool reattach_observer);
+
+  // Returns next reconnection state based on the current activation phase.
+  static PlanActivationState GetNextReconnectState(PlanActivationState state);
+  static const char* GetStateDescription(PlanActivationState state);
+
+  scoped_refptr<CellularConfigDocument> cellular_config_;
+  // Internal handler state.
+  PlanActivationState state_;
+  // MEID of cellular device to activate.
+  std::string meid_;
+  // Service path of network begin activated. Please note that the path can
+  // change during the activation process even though it is still representing
+  // the same service.
+  std::string service_path_;
+  // Flags that control if wifi and ethernet connection needs to be restored
+  // after the activation of cellular network.
+  bool reenable_wifi_;
+  bool reenable_ethernet_;
+  bool reenable_cert_check_;
+  bool evaluating_;
+  // True if we think that another tab is already running activation.
+  bool already_running_;
+  // True activation process had been terminated.
+  bool terminated_;
+  // Connection retry counter.
+  int connection_retry_count_;
+  // Post payment reconnect wait counters.
+  int reconnect_wait_count_;
+  // Payment portal reload/reconnect attempt count.
+  int payment_reconnect_count_;
+  // Activation retry attempt count;
+  int activation_attempt_;
+  // Connection start time.
+  base::Time connection_start_time_;
+  // Timer that monitors reconnection timeouts.
+  base::RepeatingTimer<MobileActivator> reconnect_timer_;
+
+  ObserverList<Observer> observers_;
+
+  DISALLOW_COPY_AND_ASSIGN(MobileActivator);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_MOBILE_MOBILE_ACTIVATOR_H_