easy-signin: Wire GetSignInChallenge.

chrome/browser/signin/easy_unlock_service_signin_chromeos.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/signin/easy_unlock_service_signin_chromeos.h"
 
+#include "base/bind.h"
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "base/values.h"
+#include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_key_manager.h"
+#include "chrome/browser/chromeos/login/session/user_session_manager.h"
+#include "chromeos/chromeos_switches.h"
+#include "chromeos/login/auth/user_context.h"
+
 EasyUnlockServiceSignin::EasyUnlockServiceSignin(Profile* profile)
-    : EasyUnlockService(profile) {
+    : EasyUnlockService(profile),
+      weak_ptr_factory_(this) {
 }
 
 EasyUnlockServiceSignin::~EasyUnlockServiceSignin() {
 }
 
+void EasyUnlockServiceSignin::SetAssociatedUser(const std::string& user_id) {
+  if (user_id_ == user_id)
+    return;
+
+  user_id_ = user_id;
+  FetchCryptohomeKeys();
+}
+
 EasyUnlockService::Type EasyUnlockServiceSignin::GetType() const {
   return EasyUnlockService::TYPE_SIGNIN;
 }
 
 std::string EasyUnlockServiceSignin::GetUserEmail() const {
-  // TODO(tbarzic): Implement this (http://crbug.com/401634).
-  return "";
+  return user_id_;
 }
 
 void EasyUnlockServiceSignin::LaunchSetup() {
   NOTREACHED();
 }
 
 const base::DictionaryValue* EasyUnlockServiceSignin::GetPermitAccess() const {
   // TODO(tbarzic): Implement this (http://crbug.com/401634).
   return NULL;
 }
 
 void EasyUnlockServiceSignin::SetPermitAccess(
     const base::DictionaryValue& permit) {
   NOTREACHED();
 }
 
 void EasyUnlockServiceSignin::ClearPermitAccess() {
   NOTREACHED();
 }
 
 const base::ListValue* EasyUnlockServiceSignin::GetRemoteDevices() const {
-  // TODO(tbarzic): Implement this (http://crbug.com/401634).
-  return NULL;
+  return remote_devices_value_.get();
 }
 
 void EasyUnlockServiceSignin::SetRemoteDevices(
     const base::ListValue& devices) {
   NOTREACHED();
 }
 
 void EasyUnlockServiceSignin::ClearRemoteDevices() {
   NOTREACHED();
 }
 
 void EasyUnlockServiceSignin::RunTurnOffFlow() {
   NOTREACHED();
 }
 
 void EasyUnlockServiceSignin::ResetTurnOffFlow() {
   NOTREACHED();
 }
 
 EasyUnlockService::TurnOffFlowStatus
     EasyUnlockServiceSignin::GetTurnOffFlowStatus() const {
   return EasyUnlockService::IDLE;
 }
 
+std::string EasyUnlockServiceSignin::GetChallenge() const {
+  // TODO(xiyuan): Use correct remote device instead of hard coded first one.
+  size_t device_index = 0;
+  return device_index < remote_devices_.size()
+             ? remote_devices_[device_index].challenge
+             : std::string();
+}
+
 void EasyUnlockServiceSignin::InitializeInternal() {
 }
 
 bool EasyUnlockServiceSignin::IsAllowedInternal() {
-  // TODO(tbarzic): Implement this (http://crbug.com/401634).
-  return false;
+  return !user_id_.empty() && !remote_devices_.empty() &&
+         CommandLine::ForCurrentProcess()->HasSwitch(
+             chromeos::switches::kEnableEasySignin);
 }
 
+void EasyUnlockServiceSignin::FetchCryptohomeKeys() {
+  remote_devices_.clear();
+  remote_devices_value_.reset();
+  if (user_id_.empty()) {
+    UpdateAppState();
+    return;
+  }
+
+  chromeos::EasyUnlockKeyManager* key_manager =
+      chromeos::UserSessionManager::GetInstance()->GetEasyUnlockKeyManager();
+  DCHECK(key_manager);
+  key_manager->GetDeviceDataList(
+      chromeos::UserContext(user_id_),
+      base::Bind(&EasyUnlockServiceSignin::OnCryptohomeKeysFetched,
+                 weak_ptr_factory_.GetWeakPtr()));
+}
+
+void EasyUnlockServiceSignin::OnCryptohomeKeysFetched(
+    bool success,
+    const chromeos::EasyUnlockDeviceKeyDataList& devices) {
+  if (!success) {
+    LOG(WARNING) << "Easy unlock cryptohome keys not found for user "
+                 << user_id_;
+    return;
+  }
+
+  remote_devices_ = devices;
+  remote_devices_value_.reset(new base::ListValue);
+  chromeos::EasyUnlockKeyManager::DeviceDataListToRemoteDeviceList(
+      remote_devices_, remote_devices_value_.get());
+
+  UpdateAppState();
+}