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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_SETTINGS_SESSION_MANAGER_OPERATION_H_
#define CHROME_BROWSER_CHROMEOS_SETTINGS_SESSION_MANAGER_OPERATION_H_
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/chromeos/policy/device_cloud_policy_validator.h"
#include "chrome/browser/chromeos/settings/device_settings_service.h"
#include "net/cert/x509_util_nss.h"
namespace enterprise_management {
class ChromeDeviceSettingsProto;
class PolicyData;
class PolicyFetchResponse;
}
namespace chromeos {
class OwnerKeyUtil;
class SessionManagerClient;
// Handles a single transaction with session manager. This is a virtual base
// class that contains common infrastructure for key and policy loading. There
// are subclasses for loading, storing and signing policy blobs.
class SessionManagerOperation {
public:
typedef base::Callback<void(SessionManagerOperation*,
DeviceSettingsService::Status)> Callback;
// Creates a new load operation.
explicit SessionManagerOperation(const Callback& callback);
virtual ~SessionManagerOperation();
// Starts the operation.
void Start(SessionManagerClient* session_manager_client,
scoped_refptr<OwnerKeyUtil> owner_key_util,
scoped_refptr<OwnerKey> owner_key);
// Restarts a load operation (if that part is already in progress).
void RestartLoad(bool key_changed);
// Accessors for recovering the loaded policy data after completion.
scoped_ptr<enterprise_management::PolicyData>& policy_data() {
return policy_data_;
}
scoped_ptr<enterprise_management::ChromeDeviceSettingsProto>&
device_settings() {
return device_settings_;
}
// Owner key as configured/loaded from disk.
scoped_refptr<OwnerKey> owner_key() {
return owner_key_;
}
// Whether the load operation is underway.
bool is_loading() const {
return is_loading_;
}
void set_force_key_load(bool force_key_load) {
force_key_load_ = force_key_load;
}
void set_username(const std::string& username) { username_ = username; }
void set_slot(PK11SlotInfo* slot) { slot_ = slot; }
protected:
// Runs the operation. The result is reported through |callback_|.
virtual void Run() = 0;
// Ensures the owner key is loaded.
void EnsureOwnerKey(const base::Closure& callback);
// Starts a load operation.
void StartLoading();
// Reports the result status of the operation. Once this gets called, the
// operation should not perform further processing or trigger callbacks.
void ReportResult(DeviceSettingsService::Status status);
SessionManagerClient* session_manager_client() {
return session_manager_client_;
}
private:
// Loads the owner key from disk. Must be run on a thread that can do I/O.
static scoped_refptr<OwnerKey> LoadOwnerKey(
scoped_refptr<OwnerKeyUtil> util,
scoped_refptr<OwnerKey> current_key,
PK11SlotInfo* slot);
// Stores the owner key loaded by LoadOwnerKey and calls |callback|.
void StoreOwnerKey(const base::Closure& callback,
scoped_refptr<OwnerKey> new_key);
// Triggers a device settings load.
void RetrieveDeviceSettings();
// Validates device settings after retrieval from session_manager.
void ValidateDeviceSettings(const std::string& policy_blob);
// Extracts status and device settings from the validator and reports them.
void ReportValidatorStatus(policy::DeviceCloudPolicyValidator* validator);
SessionManagerClient* session_manager_client_;
scoped_refptr<OwnerKeyUtil> owner_key_util_;
base::WeakPtrFactory<SessionManagerOperation> weak_factory_;
Callback callback_;
scoped_refptr<OwnerKey> owner_key_;
bool force_key_load_;
std::string username_;
PK11SlotInfo* slot_;
bool is_loading_;
scoped_ptr<enterprise_management::PolicyData> policy_data_;
scoped_ptr<enterprise_management::ChromeDeviceSettingsProto> device_settings_;
DISALLOW_COPY_AND_ASSIGN(SessionManagerOperation);
};
// This operation loads the public owner key from disk if appropriate, fetches
// the policy blob from session manager, and validates the loaded policy blob.
class LoadSettingsOperation : public SessionManagerOperation {
public:
// Creates a new load operation.
explicit LoadSettingsOperation(const Callback& callback);
virtual ~LoadSettingsOperation();
protected:
// SessionManagerOperation:
virtual void Run() OVERRIDE;
private:
DISALLOW_COPY_AND_ASSIGN(LoadSettingsOperation);
};
// Stores a pre-generated policy blob and reloads the device settings from
// session_manager.
class StoreSettingsOperation : public SessionManagerOperation {
public:
// Creates a new store operation.
StoreSettingsOperation(
const Callback& callback,
scoped_ptr<enterprise_management::PolicyFetchResponse> policy);
virtual ~StoreSettingsOperation();
protected:
// SessionManagerOperation:
virtual void Run() OVERRIDE;
private:
// Handles the result of the store operation and triggers the load.
void HandleStoreResult(bool success);
scoped_ptr<enterprise_management::PolicyFetchResponse> policy_;
base::WeakPtrFactory<StoreSettingsOperation> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(StoreSettingsOperation);
};
// Signs device settings and stores the resulting blob to session_manager.
class SignAndStoreSettingsOperation : public SessionManagerOperation {
public:
// Creates a new sign-and-store operation.
SignAndStoreSettingsOperation(
const Callback& callback,
scoped_ptr<enterprise_management::PolicyData> new_policy);
virtual ~SignAndStoreSettingsOperation();
// SessionManagerOperation:
virtual void Run() OVERRIDE;
private:
// Given an owner key, starts the signing operation.
void StartSigning();
// Builds the policy blob and signs it using the owner key.
static std::string AssembleAndSignPolicy(
scoped_ptr<enterprise_management::PolicyData> policy,
scoped_refptr<OwnerKey> owner_key);
// Stores the signed device settings blob.
void StoreDeviceSettingsBlob(std::string device_settings_blob);
// Handles the result of the store operation and triggers the load.
void HandleStoreResult(bool success);
scoped_ptr<enterprise_management::PolicyData> new_policy_;
base::WeakPtrFactory<SignAndStoreSettingsOperation> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(SignAndStoreSettingsOperation);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_SETTINGS_SESSION_MANAGER_OPERATION_H_
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