base::Callback-ify policy::DeviceManagementService.

chrome/browser/policy/device_management_backend_impl.cc

 // 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.
 
 #include "chrome/browser/policy/device_management_backend_impl.h"
 
 #include <utility>
 #include <vector>

[Joao da Silva, 2012/01/02 16:14:43]

Nit: not used

[Mattias Nissler (ping if slow), 2012/01/02 17:53:23]

Done.

 
+#include "base/bind.h"
 #include "base/metrics/histogram.h"
+#include "base/stl_util.h"
 #include "base/stringprintf.h"

[Joao da Silva, 2012/01/02 16:14:43]

Nit: not used

[Mattias Nissler (ping if slow), 2012/01/02 17:53:23]

Done.

 #include "base/sys_info.h"

[Joao da Silva, 2012/01/02 16:14:43]

Nit: not used

[Mattias Nissler (ping if slow), 2012/01/02 17:53:23]

Done.

 #include "chrome/browser/policy/device_management_service.h"
 #include "chrome/browser/policy/enterprise_metrics.h"
 #include "chrome/common/chrome_version_info.h"
 #include "content/public/common/url_fetcher.h"
 #include "net/base/escape.h"
 #include "net/url_request/url_request_status.h"

[Joao da Silva, 2012/01/02 16:14:43]

Nit: these 4 (up to chrome_version_info.h) not used

[Mattias Nissler (ping if slow), 2012/01/02 17:53:23]

Done.

 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/system/statistics_provider.h"

[Joao da Silva, 2012/01/02 16:14:43]

Nit: not used

[Mattias Nissler (ping if slow), 2012/01/02 17:53:23]

Done.

 #endif
 
 namespace em = enterprise_management;
 
 namespace policy {
 
-// Name constants for URL query parameters.
-const char DeviceManagementBackendImpl::kParamAgent[] = "agent";
-const char DeviceManagementBackendImpl::kParamAppType[] = "apptype";
-const char DeviceManagementBackendImpl::kParamDeviceID[] = "deviceid";
-const char DeviceManagementBackendImpl::kParamDeviceType[] = "devicetype";
-const char DeviceManagementBackendImpl::kParamOAuthToken[] = "oauth_token";
-const char DeviceManagementBackendImpl::kParamPlatform[] = "platform";
-const char DeviceManagementBackendImpl::kParamRequest[] = "request";
-const char DeviceManagementBackendImpl::kParamUserAffiliation[] =
-    "user_affiliation";
-
-// String constants for the device and app type we report to the server.
-const char DeviceManagementBackendImpl::kValueAppType[] = "Chrome";
-const char DeviceManagementBackendImpl::kValueDeviceType[] = "2";
-const char DeviceManagementBackendImpl::kValueRequestAutoEnrollment[] =
-    "enterprise_check";
-const char DeviceManagementBackendImpl::kValueRequestPolicy[] = "policy";
-const char DeviceManagementBackendImpl::kValueRequestRegister[] = "register";
-const char DeviceManagementBackendImpl::kValueRequestUnregister[] =
-    "unregister";
-const char DeviceManagementBackendImpl::kValueUserAffiliationManaged[] =
-    "managed";
-const char DeviceManagementBackendImpl::kValueUserAffiliationNone[] = "none";
-
 namespace {
 
-const char kValueAgent[] = "%s %s(%s)";
-const char kValuePlatform[] = "%s|%s|%s";
+// CloudPolicyDataStore::DeviceManagement is being phased out; for now we
+// convert here to support legacy code.
+DeviceManagementBackend::ErrorCode ConvertStatus(
+    DeviceManagementStatus status) {
+  switch (status) {
+    case DM_STATUS_SUCCESS:
+      NOTREACHED();
+      return DeviceManagementBackend::kErrorRequestFailed;
+    case DM_STATUS_REQUEST_INVALID:
+      return DeviceManagementBackend::kErrorRequestInvalid;
+    case DM_STATUS_REQUEST_FAILED:
+      return DeviceManagementBackend::kErrorRequestFailed;
+    case DM_STATUS_TEMPORARY_UNAVAILABLE:
+      return DeviceManagementBackend::kErrorTemporaryUnavailable;
+    case DM_STATUS_HTTP_STATUS_ERROR:
+      return DeviceManagementBackend::kErrorHttpStatus;
+    case DM_STATUS_RESPONSE_DECODING_ERROR:
+      return DeviceManagementBackend::kErrorResponseDecoding;
+    case DM_STATUS_SERVICE_MANAGEMENT_NOT_SUPPORTED:
+      return DeviceManagementBackend::kErrorServiceManagementNotSupported;
+    case DM_STATUS_SERVICE_DEVICE_NOT_FOUND:
+      return DeviceManagementBackend::kErrorServiceDeviceNotFound;
+    case DM_STATUS_SERVICE_MANAGEMENT_TOKEN_INVALID:
+      return DeviceManagementBackend::kErrorServiceManagementTokenInvalid;
+    case DM_STATUS_SERVICE_ACTIVATION_PENDING:
+      return DeviceManagementBackend::kErrorServiceActivationPending;
+    case DM_STATUS_SERVICE_INVALID_SERIAL_NUMBER:
+      return DeviceManagementBackend::kErrorServiceInvalidSerialNumber;
+    case DM_STATUS_SERVICE_DEVICE_ID_CONFLICT:
+      return DeviceManagementBackend::kErrorServiceDeviceIdConflict;
+    case DM_STATUS_SERVICE_POLICY_NOT_FOUND:
+      return DeviceManagementBackend::kErrorServicePolicyNotFound;
+  }
 
-const char kPostContentType[] = "application/protobuf";
-
-const char kServiceTokenAuthHeader[] = "Authorization: GoogleLogin auth=";
-const char kDMTokenAuthHeader[] = "Authorization: GoogleDMToken token=";
-
-// HTTP Error Codes of the DM Server with their concrete meanings in the context
-// of the DM Server communication.
-const int kSuccess = 200;
-const int kInvalidArgument = 400;
-const int kInvalidAuthCookieOrDMToken = 401;
-const int kDeviceManagementNotAllowed = 403;
-const int kInvalidURL = 404; // This error is not coming from the GFE.
-const int kInvalidSerialNumber = 405;
-const int kDeviceIdConflict = 409;
-const int kDeviceNotFound = 410;
-const int kPendingApproval = 412;
-const int kInternalServerError = 500;
-const int kServiceUnavailable = 503;
-const int kPolicyNotFound = 902; // This error is not sent as HTTP status code.
-
-// TODO(pastarmovj): Legacy error codes are here for compatibility only. They
-// should be removed once the DM Server has been updated.
-const int kPendingApprovalLegacy = 491;
-const int kDeviceNotFoundLegacy = 901;
-
-#if defined(OS_CHROMEOS)
-// Machine info keys.
-const char kMachineInfoHWClass[] = "hardware_class";
-const char kMachineInfoBoard[] = "CHROMEOS_RELEASE_BOARD";
-#endif
-
-// Helper class for URL query parameter encoding/decoding.
-class URLQueryParameters {
- public:
-  URLQueryParameters() {}
-
-  // Add a query parameter.
-  void Put(const std::string& name, const std::string& value);
-
-  // Produce the query string, taking care of properly encoding and assembling
-  // the names and values.
-  std::string Encode();
-
- private:
-  typedef std::vector<std::pair<std::string, std::string> > ParameterMap;
-  ParameterMap params_;
-
-  DISALLOW_COPY_AND_ASSIGN(URLQueryParameters);
-};
-
-void URLQueryParameters::Put(const std::string& name,
-                             const std::string& value) {
-  params_.push_back(std::make_pair(name, value));
+  NOTREACHED();
+  return DeviceManagementBackend::kErrorRequestFailed;
 }
 
-std::string URLQueryParameters::Encode() {
-  std::string result;
-  for (ParameterMap::const_iterator entry(params_.begin());
-       entry != params_.end();
-       ++entry) {
-    if (entry != params_.begin())
-      result += '&';
-    result += net::EscapeQueryParamValue(entry->first, true);
-    result += '=';
-    result += net::EscapeQueryParamValue(entry->second, true);
+// Conversion helper to support legacy code.
+UserAffiliation ConvertAffiliation(
+    CloudPolicyDataStore::UserAffiliation affiliation) {
+  switch (affiliation) {
+    case CloudPolicyDataStore::USER_AFFILIATION_MANAGED:
+      return USER_AFFILIATION_MANAGED;
+    case CloudPolicyDataStore::USER_AFFILIATION_NONE:
+      return USER_AFFILIATION_NONE;
   }
-  return result;
+
+  NOTREACHED();
+  return USER_AFFILIATION_NONE;
 }
 
 }  // namespace
 
-// A base class containing the common code for the jobs created by the backend
-// implementation. Subclasses provide custom code for handling actual register,
-// unregister, and policy jobs.
-class DeviceManagementJobBase
-    : public DeviceManagementService::DeviceManagementJob {
- public:
-  virtual ~DeviceManagementJobBase() {}
-
-  // DeviceManagementJob overrides:
-  virtual void HandleResponse(const net::URLRequestStatus& status,
-                              int response_code,
-                              const net::ResponseCookies& cookies,
-                              const std::string& data);
-  virtual GURL GetURL(const std::string& server_url);
-  virtual void ConfigureRequest(content::URLFetcher* fetcher);
-
- protected:
-  // Constructs a device management job running for the given backend.
-  DeviceManagementJobBase(DeviceManagementBackendImpl* backend_impl,
-                          const std::string& request_type,
-                          const std::string& device_id)
-      : backend_impl_(backend_impl) {
-    query_params_.Put(DeviceManagementBackendImpl::kParamRequest, request_type);
-    query_params_.Put(DeviceManagementBackendImpl::kParamDeviceType,
-                      DeviceManagementBackendImpl::kValueDeviceType);
-    query_params_.Put(DeviceManagementBackendImpl::kParamAppType,
-                      DeviceManagementBackendImpl::kValueAppType);
-    query_params_.Put(DeviceManagementBackendImpl::kParamDeviceID, device_id);
-    query_params_.Put(DeviceManagementBackendImpl::kParamAgent,
-                      DeviceManagementBackendImpl::GetAgentString());
-    query_params_.Put(DeviceManagementBackendImpl::kParamPlatform,
-                      DeviceManagementBackendImpl::GetPlatformString());
-  }
-
-  void SetQueryParam(const std::string& name, const std::string& value) {
-    query_params_.Put(name, value);
-  }
-
-  void SetGaiaAuthToken(const std::string& gaia_auth_token) {
-    gaia_auth_token_ = gaia_auth_token;
-  }
-
-  void SetDeviceManagementToken(const std::string& device_management_token) {
-    device_management_token_ = device_management_token;
-  }
-
-  void SetPayload(const em::DeviceManagementRequest& request) {
-    if (!request.SerializeToString(&payload_)) {
-      NOTREACHED();
-      LOG(ERROR) << "Failed to serialize request.";
-    }
-  }
-
- private:
-  // Implemented by subclasses to handle decoded responses and errors.
-  virtual void OnResponse(
-      const em::DeviceManagementResponse& response) = 0;
-  virtual void OnError(DeviceManagementBackend::ErrorCode error) = 0;
-
-  // The backend this job is handling a request for.
-  DeviceManagementBackendImpl* backend_impl_;
-
-  // Query parameters.
-  URLQueryParameters query_params_;
-
-  // Auth token (if applicaple).
-  std::string gaia_auth_token_;
-
-  // Device management token (if applicable).
-  std::string device_management_token_;
-
-  // The payload.
-  std::string payload_;
-
-  DISALLOW_COPY_AND_ASSIGN(DeviceManagementJobBase);
-};
-
-void DeviceManagementJobBase::HandleResponse(
-    const net::URLRequestStatus& status,
-    int response_code,
-    const net::ResponseCookies& cookies,
-    const std::string& data) {
-  // Delete ourselves when this is done.
-  scoped_ptr<DeviceManagementJob> scoped_killer(this);
-  backend_impl_->JobDone(this);
-  backend_impl_ = NULL;
-
-  if (status.status() != net::URLRequestStatus::SUCCESS) {
-    OnError(DeviceManagementBackend::kErrorRequestFailed);
-    return;
-  }
-
-  switch (response_code) {
-    case kSuccess: {
-      em::DeviceManagementResponse response;
-      if (!response.ParseFromString(data)) {
-        OnError(DeviceManagementBackend::kErrorResponseDecoding);
-        return;
-      }
-      OnResponse(response);
-      return;
-    }
-    case kInvalidArgument: {
-      OnError(DeviceManagementBackend::kErrorRequestInvalid);
-      return;
-    }
-    case kInvalidAuthCookieOrDMToken: {
-      OnError(DeviceManagementBackend::kErrorServiceManagementTokenInvalid);
-      return;
-    }
-    case kDeviceManagementNotAllowed: {
-      OnError(DeviceManagementBackend::kErrorServiceManagementNotSupported);
-      return;
-    }
-    case kPendingApprovalLegacy:
-    case kPendingApproval: {
-      OnError(DeviceManagementBackend::kErrorServiceActivationPending);
-      return;
-    }
-    case kInvalidURL:
-    case kInternalServerError:
-    case kServiceUnavailable: {
-      OnError(DeviceManagementBackend::kErrorTemporaryUnavailable);
-      return;
-    }
-    case kDeviceNotFoundLegacy:
-    case kDeviceNotFound: {
-      OnError(DeviceManagementBackend::kErrorServiceDeviceNotFound);
-      return;
-    }
-    case kPolicyNotFound: {
-      OnError(DeviceManagementBackend::kErrorServicePolicyNotFound);
-      break;
-    }
-    case kInvalidSerialNumber: {
-      OnError(DeviceManagementBackend::kErrorServiceInvalidSerialNumber);
-      break;
-    }
-    case kDeviceIdConflict: {
-      OnError(DeviceManagementBackend::kErrorServiceDeviceIdConflict);
-      break;
-    }
-    default: {
-      VLOG(1) << "Unexpected HTTP status in response from DMServer : "
-              << response_code << ".";
-      // Handle all unknown 5xx HTTP error codes as temporary and any other
-      // unknown error as one that needs more time to recover.
-      if (response_code >= 500 && response_code <= 599)
-        OnError(DeviceManagementBackend::kErrorTemporaryUnavailable);
-      else
-        OnError(DeviceManagementBackend::kErrorHttpStatus);
-      return;
-    }
-  }
-}
-
-GURL DeviceManagementJobBase::GetURL(
-    const std::string& server_url) {
-  return GURL(server_url + '?' + query_params_.Encode());
-}
-
-void DeviceManagementJobBase::ConfigureRequest(content::URLFetcher* fetcher) {
-  fetcher->SetUploadData(kPostContentType, payload_);
-  std::string extra_headers;
-  if (!gaia_auth_token_.empty())
-    extra_headers += kServiceTokenAuthHeader + gaia_auth_token_ + "\n";
-  if (!device_management_token_.empty())
-    extra_headers += kDMTokenAuthHeader + device_management_token_ + "\n";
-  fetcher->SetExtraRequestHeaders(extra_headers);
-}
-
-// Handles device registration jobs.
-class DeviceManagementRegisterJob : public DeviceManagementJobBase {
- public:
-  DeviceManagementRegisterJob(
-      DeviceManagementBackendImpl* backend_impl,
-      const std::string& gaia_auth_token,
-      const std::string& oauth_token,
-      const std::string& device_id,
-      const em::DeviceRegisterRequest& request,
-      DeviceManagementBackend::DeviceRegisterResponseDelegate* delegate)
-      : DeviceManagementJobBase(
-          backend_impl,
-          DeviceManagementBackendImpl::kValueRequestRegister,
-          device_id),
-        delegate_(delegate) {
-    if (!oauth_token.empty())
-      SetQueryParam(DeviceManagementBackendImpl::kParamOAuthToken, oauth_token);
-    else if (!gaia_auth_token.empty())
-      SetGaiaAuthToken(gaia_auth_token);
-    em::DeviceManagementRequest request_wrapper;
-    request_wrapper.mutable_register_request()->CopyFrom(request);
-    SetPayload(request_wrapper);
-  }
-  virtual ~DeviceManagementRegisterJob() {}
-
- private:
-  // DeviceManagementJobBase overrides.
-  virtual void OnError(DeviceManagementBackend::ErrorCode error) OVERRIDE {
-    MetricToken sample;
-    switch (error) {
-      case DeviceManagementBackend::kErrorRequestInvalid:
-      case DeviceManagementBackend::kErrorRequestFailed:
-        sample = kMetricTokenFetchRequestFailed;
-        break;
-      case DeviceManagementBackend::kErrorServiceDeviceNotFound:
-        sample = kMetricTokenFetchDeviceNotFound;
-        break;
-      case DeviceManagementBackend::kErrorServiceManagementNotSupported:
-        sample = kMetricTokenFetchManagementNotSupported;
-        break;
-      case DeviceManagementBackend::kErrorResponseDecoding:
-        sample = kMetricTokenFetchBadResponse;
-        break;
-      case DeviceManagementBackend::kErrorServiceInvalidSerialNumber:
-        sample = kMetricTokenFetchInvalidSerialNumber;
-        break;
-      case DeviceManagementBackend::kErrorServiceDeviceIdConflict:
-        sample = kMetricTokenFetchDeviceIdConflict;
-        break;
-      default:
-        sample = kMetricTokenFetchServerFailed;
-        break;
-    }
-    UMA_HISTOGRAM_ENUMERATION(kMetricToken, sample, kMetricTokenSize);
-    delegate_->OnError(error);
-  }
-  virtual void OnResponse(
-      const em::DeviceManagementResponse& response) OVERRIDE {
-    UMA_HISTOGRAM_ENUMERATION(kMetricToken, kMetricTokenFetchResponseReceived,
-                              kMetricTokenSize);
-    delegate_->HandleRegisterResponse(response.register_response());
-  }
-
-  DeviceManagementBackend::DeviceRegisterResponseDelegate* delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(DeviceManagementRegisterJob);
-};
-
-// Handles device unregistration jobs.
-class DeviceManagementUnregisterJob : public DeviceManagementJobBase {
- public:
-  DeviceManagementUnregisterJob(
-      DeviceManagementBackendImpl* backend_impl,
-      const std::string& device_management_token,
-      const std::string& device_id,
-      const em::DeviceUnregisterRequest& request,
-      DeviceManagementBackend::DeviceUnregisterResponseDelegate* delegate)
-      : DeviceManagementJobBase(
-          backend_impl,
-          DeviceManagementBackendImpl::kValueRequestUnregister,
-          device_id),
-        delegate_(delegate) {
-    SetDeviceManagementToken(device_management_token);
-    em::DeviceManagementRequest request_wrapper;
-    request_wrapper.mutable_unregister_request()->CopyFrom(request);
-    SetPayload(request_wrapper);
-  }
-  virtual ~DeviceManagementUnregisterJob() {}
-
- private:
-  // DeviceManagementJobBase overrides.
-  virtual void OnError(DeviceManagementBackend::ErrorCode error) OVERRIDE {
-    delegate_->OnError(error);
-  }
-  virtual void OnResponse(
-      const em::DeviceManagementResponse& response) OVERRIDE {
-    delegate_->HandleUnregisterResponse(response.unregister_response());
-  }
-
-  DeviceManagementBackend::DeviceUnregisterResponseDelegate* delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(DeviceManagementUnregisterJob);
-};
-
-// Handles policy request jobs.
-class DeviceManagementPolicyJob : public DeviceManagementJobBase {
- public:
-  DeviceManagementPolicyJob(
-      DeviceManagementBackendImpl* backend_impl,
-      const std::string& device_management_token,
-      const std::string& device_id,
-      const std::string& user_affiliation,
-      const em::DevicePolicyRequest& request,
-      const em::DeviceStatusReportRequest* device_status,
-      DeviceManagementBackend::DevicePolicyResponseDelegate* delegate)
-      : DeviceManagementJobBase(
-          backend_impl,
-          DeviceManagementBackendImpl::kValueRequestPolicy,
-          device_id),
-        delegate_(delegate) {
-    SetDeviceManagementToken(device_management_token);
-    SetQueryParam(DeviceManagementBackendImpl::kParamUserAffiliation,
-                  user_affiliation);
-    em::DeviceManagementRequest request_wrapper;
-    request_wrapper.mutable_policy_request()->CopyFrom(request);
-    if (device_status != NULL) {
-      request_wrapper.mutable_device_status_report_request()->CopyFrom(
-          *device_status);
-    }
-    SetPayload(request_wrapper);
-  }
-  virtual ~DeviceManagementPolicyJob() {}
-
- private:
-  // DeviceManagementJobBase overrides.
-  virtual void OnError(DeviceManagementBackend::ErrorCode error) OVERRIDE {
-    MetricPolicy sample;
-    switch (error) {
-      case DeviceManagementBackend::kErrorRequestInvalid:
-      case DeviceManagementBackend::kErrorRequestFailed:
-        sample = kMetricPolicyFetchRequestFailed;
-        break;
-      case DeviceManagementBackend::kErrorServicePolicyNotFound:
-        sample = kMetricPolicyFetchNotFound;
-        break;
-      case DeviceManagementBackend::kErrorServiceManagementTokenInvalid:
-        sample = kMetricPolicyFetchInvalidToken;
-        break;
-      case DeviceManagementBackend::kErrorResponseDecoding:
-        sample = kMetricPolicyFetchBadResponse;
-        break;
-      default:
-        sample = kMetricPolicyFetchServerFailed;
-        break;
-    }
-    UMA_HISTOGRAM_ENUMERATION(kMetricPolicy, sample, kMetricPolicySize);
-    delegate_->OnError(error);
-  }
-  virtual void OnResponse(
-      const em::DeviceManagementResponse& response) OVERRIDE {
-    UMA_HISTOGRAM_ENUMERATION(kMetricPolicy, kMetricPolicyFetchResponseReceived,
-                              kMetricPolicySize);
-    delegate_->HandlePolicyResponse(response.policy_response());
-  }
-
-  DeviceManagementBackend::DevicePolicyResponseDelegate* delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(DeviceManagementPolicyJob);
-};
-
-// Handles auto enrollment request jobs. These are used to determine if a new
-// ChromiumOS device should automatically enter the enterprise enrollment screen
-// during the OOBE flow.
-class DeviceManagementAutoEnrollmentJob : public DeviceManagementJobBase {
- public:
-  DeviceManagementAutoEnrollmentJob(
-      DeviceManagementBackendImpl* backend_impl,
-      const std::string& device_id,
-      const em::DeviceAutoEnrollmentRequest& request,
-      DeviceManagementBackend::DeviceAutoEnrollmentResponseDelegate* delegate)
-      : DeviceManagementJobBase(
-          backend_impl,
-          DeviceManagementBackendImpl::kValueRequestAutoEnrollment,
-          device_id),
-        delegate_(delegate) {
-    em::DeviceManagementRequest request_wrapper;
-    request_wrapper.mutable_auto_enrollment_request()->CopyFrom(request);
-    SetPayload(request_wrapper);
-  }
-  virtual ~DeviceManagementAutoEnrollmentJob() {}
-
- private:
-  // DeviceManagementJobBase overrides.
-  virtual void OnError(DeviceManagementBackend::ErrorCode error) OVERRIDE {
-    delegate_->OnError(error);
-  }
-  virtual void OnResponse(
-      const em::DeviceManagementResponse& response) OVERRIDE {
-    delegate_->HandleAutoEnrollmentResponse(
-        response.auto_enrollment_response());
-  }
-
-  DeviceManagementBackend::DeviceAutoEnrollmentResponseDelegate* delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(DeviceManagementAutoEnrollmentJob);
-};
-
 DeviceManagementBackendImpl::DeviceManagementBackendImpl(
     DeviceManagementService* service)
     : service_(service) {
 }
 
 DeviceManagementBackendImpl::~DeviceManagementBackendImpl() {
-  for (JobSet::iterator job(pending_jobs_.begin());
-       job != pending_jobs_.end();
-       ++job) {
-    service_->RemoveJob(*job);
-    delete *job;
-  }
-  pending_jobs_.clear();
-}
-
-std::string DeviceManagementBackendImpl::GetAgentString() {
-  CR_DEFINE_STATIC_LOCAL(std::string, agent, ());
-  if (!agent.empty())
-    return agent;
-
-  chrome::VersionInfo version_info;
-  agent = base::StringPrintf(kValueAgent,
-                             version_info.Name().c_str(),
-                             version_info.Version().c_str(),
-                             version_info.LastChange().c_str());
-  return agent;
-}
-
-std::string DeviceManagementBackendImpl::GetPlatformString() {
-  CR_DEFINE_STATIC_LOCAL(std::string, platform, ());
-  if (!platform.empty())
-    return platform;
-
-  std::string os_name(base::SysInfo::OperatingSystemName());
-  std::string os_hardware(base::SysInfo::CPUArchitecture());
-
-#if defined(OS_CHROMEOS)
-  chromeos::system::StatisticsProvider* provider =
-      chromeos::system::StatisticsProvider::GetInstance();
-
-  std::string hwclass;
-  std::string board;
-  if (!provider->GetMachineStatistic(kMachineInfoHWClass, &hwclass) ||
-      !provider->GetMachineStatistic(kMachineInfoBoard, &board)) {
-    LOG(ERROR) << "Failed to get machine information";
-  }
-  os_name += ",CrOS," + board;
-  os_hardware += "," + hwclass;
-#endif
-
-  std::string os_version("-");
-#if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_CHROMEOS)
-  int32 os_major_version = 0;
-  int32 os_minor_version = 0;
-  int32 os_bugfix_version = 0;
-  base::SysInfo::OperatingSystemVersionNumbers(&os_major_version,
-                                               &os_minor_version,
-                                               &os_bugfix_version);
-  os_version = base::StringPrintf("%d.%d.%d",
-                                  os_major_version,
-                                  os_minor_version,
-                                  os_bugfix_version);
-#endif
-
-  platform = base::StringPrintf(kValuePlatform,
-                                os_name.c_str(),
-                                os_hardware.c_str(),
-                                os_version.c_str());
-  return platform;
-}
-
-void DeviceManagementBackendImpl::JobDone(DeviceManagementJobBase* job) {
-  pending_jobs_.erase(job);
-}
-
-void DeviceManagementBackendImpl::AddJob(DeviceManagementJobBase* job) {
-  pending_jobs_.insert(job);
-  service_->AddJob(job);
+  STLDeleteElements(&pending_jobs_);
 }
 
 void DeviceManagementBackendImpl::ProcessRegisterRequest(
     const std::string& gaia_auth_token,
     const std::string& oauth_token,
     const std::string& device_id,
     const em::DeviceRegisterRequest& request,
     DeviceRegisterResponseDelegate* delegate) {
   UMA_HISTOGRAM_ENUMERATION(kMetricToken, kMetricTokenFetchRequested,
                             kMetricTokenSize);
-  AddJob(new DeviceManagementRegisterJob(this, gaia_auth_token, oauth_token,
-                                         device_id, request, delegate));
+  DeviceManagementRequestJob* job =
+      service_->CreateJob(DeviceManagementRequestJob::TYPE_REGISTRATION);
+  job->SetGaiaToken(gaia_auth_token);
+  job->SetOAuthToken(oauth_token);
+  job->SetClientID(device_id);
+  job->GetRequest()->mutable_register_request()->CopyFrom(request);
+  job->Start(base::Bind(&DeviceManagementBackendImpl::OnRegistrationDone,
+                        base::Unretained(this), job, delegate));
+  pending_jobs_.insert(job);
 }
 
 void DeviceManagementBackendImpl::ProcessUnregisterRequest(
     const std::string& device_management_token,
     const std::string& device_id,
     const em::DeviceUnregisterRequest& request,
     DeviceUnregisterResponseDelegate* delegate) {
-  AddJob(new DeviceManagementUnregisterJob(this, device_management_token,
-                                           device_id, request, delegate));
+  DeviceManagementRequestJob* job =
+      service_->CreateJob(DeviceManagementRequestJob::TYPE_UNREGISTRATION);
+  job->SetDMToken(device_management_token);
+  job->SetClientID(device_id);
+  job->GetRequest()->mutable_unregister_request();
+  job->Start(base::Bind(&DeviceManagementBackendImpl::OnUnregistrationDone,
+                        base::Unretained(this), job, delegate));
+  pending_jobs_.insert(job);
 }
 
 void DeviceManagementBackendImpl::ProcessPolicyRequest(
     const std::string& device_management_token,
     const std::string& device_id,
     CloudPolicyDataStore::UserAffiliation affiliation,
     const em::DevicePolicyRequest& request,
     const em::DeviceStatusReportRequest* device_status,
     DevicePolicyResponseDelegate* delegate) {
   UMA_HISTOGRAM_ENUMERATION(kMetricPolicy, kMetricPolicyFetchRequested,
                             kMetricPolicySize);
-  AddJob(new DeviceManagementPolicyJob(this, device_management_token, device_id,
-                                       UserAffiliationToString(affiliation),
-                                       request, device_status, delegate));
+  DeviceManagementRequestJob* job =
+      service_->CreateJob(DeviceManagementRequestJob::TYPE_POLICY_FETCH);
+  job->SetDMToken(device_management_token);
+  job->SetClientID(device_id);
+  job->SetUserAffiliation(ConvertAffiliation(affiliation));
+  job->GetRequest()->mutable_policy_request()->CopyFrom(request);
+  if (device_status) {
+    job->GetRequest()->mutable_device_status_report_request()->CopyFrom(
+        *device_status);
+  }
+  job->Start(base::Bind(&DeviceManagementBackendImpl::OnPolicyFetchDone,
+                        base::Unretained(this), job, delegate));
+  pending_jobs_.insert(job);
 }
 
 void DeviceManagementBackendImpl::ProcessAutoEnrollmentRequest(
     const std::string& device_id,
     const em::DeviceAutoEnrollmentRequest& request,
     DeviceAutoEnrollmentResponseDelegate* delegate) {
-  AddJob(new DeviceManagementAutoEnrollmentJob(this, device_id, request,
-                                               delegate));
+  DeviceManagementRequestJob* job =
+      service_->CreateJob(DeviceManagementRequestJob::TYPE_AUTO_ENROLLMENT);
+  job->SetClientID(device_id);
+  job->GetRequest()->mutable_auto_enrollment_request()->CopyFrom(request);
+  job->Start(base::Bind(&DeviceManagementBackendImpl::OnAutoEnrollmentDone,
+                        base::Unretained(this), job, delegate));
+  pending_jobs_.insert(job);
 }
 
-// static
-const char* DeviceManagementBackendImpl::UserAffiliationToString(
-    CloudPolicyDataStore::UserAffiliation affiliation) {
-  switch (affiliation) {
-    case CloudPolicyDataStore::USER_AFFILIATION_MANAGED:
-      return kValueUserAffiliationManaged;
-    case CloudPolicyDataStore::USER_AFFILIATION_NONE:
-      return kValueUserAffiliationNone;
-  }
-  NOTREACHED();
-  return kValueUserAffiliationNone;
+void DeviceManagementBackendImpl::OnRegistrationDone(
+    DeviceManagementRequestJob* job,
+    DeviceRegisterResponseDelegate* delegate,
+    DeviceManagementStatus status,
+    const enterprise_management::DeviceManagementResponse& response) {
+  pending_jobs_.erase(job);
+  if (status == DM_STATUS_SUCCESS)
+    delegate->HandleRegisterResponse(response.register_response());
+  else
+    delegate->OnError(ConvertStatus(status));
+  delete job;
+}
+
+void DeviceManagementBackendImpl::OnUnregistrationDone(
+    DeviceManagementRequestJob* job,
+    DeviceUnregisterResponseDelegate* delegate,
+    DeviceManagementStatus status,
+    const enterprise_management::DeviceManagementResponse& response) {
+  pending_jobs_.erase(job);
+  if (status == DM_STATUS_SUCCESS)
+    delegate->HandleUnregisterResponse(response.unregister_response());
+  else
+    delegate->OnError(ConvertStatus(status));
+  delete job;
+}
+
+void DeviceManagementBackendImpl::OnPolicyFetchDone(
+    DeviceManagementRequestJob* job,
+    DevicePolicyResponseDelegate* delegate,
+    DeviceManagementStatus status,
+    const enterprise_management::DeviceManagementResponse& response) {
+  pending_jobs_.erase(job);
+  if (status == DM_STATUS_SUCCESS)
+    delegate->HandlePolicyResponse(response.policy_response());
+  else
+    delegate->OnError(ConvertStatus(status));
+  delete job;
+}
+
+void DeviceManagementBackendImpl::OnAutoEnrollmentDone(
+    DeviceManagementRequestJob* job,
+    DeviceAutoEnrollmentResponseDelegate* delegate,
+    DeviceManagementStatus status,
+    const enterprise_management::DeviceManagementResponse& response) {
+  pending_jobs_.erase(job);
+  if (status == DM_STATUS_SUCCESS)
+    delegate->HandleAutoEnrollmentResponse(response.auto_enrollment_response());
+  else
+    delegate->OnError(ConvertStatus(status));
+  delete job;
 }
 
 }  // namespace policy