1 // Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef LIBBRILLO_POLICY_DEVICE_POLICY_IMPL_H_ 6 #define LIBBRILLO_POLICY_DEVICE_POLICY_IMPL_H_ 7 8 #include <memory> 9 #include <set> 10 #include <string> 11 #include <utility> 12 #include <vector> 13 14 #include <base/files/file_path.h> 15 #include <base/macros.h> 16 17 #include "bindings/chrome_device_policy.pb.h" 18 #include "bindings/device_management_backend.pb.h" 19 #include "install_attributes/libinstallattributes.h" 20 #include "policy/device_policy.h" 21 22 #pragma GCC visibility push(default) 23 24 namespace policy { 25 26 // This class holds device settings that are to be enforced across all users. 27 // 28 // Before serving it to the users this class verifies that the policy is valid 29 // against its signature and the owner's key and also that the policy files 30 // are owned by root. 31 class DevicePolicyImpl : public DevicePolicy { 32 public: 33 DevicePolicyImpl(); 34 ~DevicePolicyImpl() override; 35 get_device_policy()36 const enterprise_management::ChromeDeviceSettingsProto& get_device_policy() 37 const { 38 return device_policy_; 39 } 40 41 // DevicePolicy overrides: 42 bool LoadPolicy() override; 43 bool GetPolicyRefreshRate(int* rate) const override; 44 bool GetUserWhitelist( 45 std::vector<std::string>* user_whitelist) const override; 46 bool GetGuestModeEnabled(bool* guest_mode_enabled) const override; 47 bool GetCameraEnabled(bool* camera_enabled) const override; 48 bool GetShowUserNames(bool* show_user_names) const override; 49 bool GetDataRoamingEnabled(bool* data_roaming_enabled) const override; 50 bool GetAllowNewUsers(bool* allow_new_users) const override; 51 bool GetMetricsEnabled(bool* metrics_enabled) const override; 52 bool GetReportVersionInfo(bool* report_version_info) const override; 53 bool GetReportActivityTimes(bool* report_activity_times) const override; 54 bool GetReportBootMode(bool* report_boot_mode) const override; 55 bool GetEphemeralUsersEnabled(bool* ephemeral_users_enabled) const override; 56 bool GetReleaseChannel(std::string* release_channel) const override; 57 bool GetReleaseChannelDelegated( 58 bool* release_channel_delegated) const override; 59 bool GetUpdateDisabled(bool* update_disabled) const override; 60 bool GetTargetVersionPrefix( 61 std::string* target_version_prefix) const override; 62 bool GetRollbackToTargetVersion( 63 int* rollback_to_target_version) const override; 64 bool GetRollbackAllowedMilestones( 65 int* rollback_allowed_milestones) const override; 66 bool GetScatterFactorInSeconds( 67 int64_t* scatter_factor_in_seconds) const override; 68 bool GetAllowedConnectionTypesForUpdate( 69 std::set<std::string>* connection_types) const override; 70 bool GetOpenNetworkConfiguration( 71 std::string* open_network_configuration) const override; 72 bool GetOwner(std::string* owner) const override; 73 bool GetHttpDownloadsEnabled(bool* http_downloads_enabled) const override; 74 bool GetAuP2PEnabled(bool* au_p2p_enabled) const override; 75 bool GetAllowKioskAppControlChromeVersion( 76 bool* allow_kiosk_app_control_chrome_version) const override; 77 bool GetUsbDetachableWhitelist( 78 std::vector<UsbDeviceId>* usb_whitelist) const override; 79 bool GetAutoLaunchedKioskAppId(std::string* app_id_out) const override; 80 bool IsEnterpriseManaged() const override; 81 bool GetSecondFactorAuthenticationMode(int* mode_out) const override; 82 bool GetDisallowedTimeIntervals( 83 std::vector<WeeklyTimeInterval>* intervals_out) const override; 84 bool GetDeviceUpdateStagingSchedule( 85 std::vector<DayPercentagePair> *staging_schedule_out) const override; 86 87 // Methods that can be used only for testing. set_policy_data_for_testing(const enterprise_management::PolicyData & policy_data)88 void set_policy_data_for_testing( 89 const enterprise_management::PolicyData& policy_data) { 90 policy_data_ = policy_data; 91 } set_verify_root_ownership_for_testing(bool verify_root_ownership)92 void set_verify_root_ownership_for_testing(bool verify_root_ownership) { 93 verify_root_ownership_ = verify_root_ownership; 94 } set_install_attributes_for_testing(std::unique_ptr<InstallAttributesReader> install_attributes_reader)95 void set_install_attributes_for_testing( 96 std::unique_ptr<InstallAttributesReader> install_attributes_reader) { 97 install_attributes_reader_ = std::move(install_attributes_reader); 98 } set_policy_for_testing(const enterprise_management::ChromeDeviceSettingsProto & device_policy)99 void set_policy_for_testing( 100 const enterprise_management::ChromeDeviceSettingsProto& device_policy) { 101 device_policy_ = device_policy; 102 } set_policy_path_for_testing(const base::FilePath & policy_path)103 void set_policy_path_for_testing(const base::FilePath& policy_path) { 104 policy_path_ = policy_path; 105 } set_key_file_path_for_testing(const base::FilePath & keyfile_path)106 void set_key_file_path_for_testing(const base::FilePath& keyfile_path) { 107 keyfile_path_ = keyfile_path; 108 } set_verify_policy_for_testing(bool value)109 void set_verify_policy_for_testing(bool value) { verify_policy_ = value; } 110 111 private: 112 // Verifies that both the policy file and the signature file exist and are 113 // owned by the root. Does nothing when |verify_root_ownership_| is set to 114 // false. 115 bool VerifyPolicyFile(const base::FilePath& policy_path); 116 117 // Verifies that the policy signature is correct. 118 bool VerifyPolicySignature() override; 119 120 // Loads policy off of disk from |policy_path| into |policy_|. Returns true if 121 // the |policy_path| is present on disk and loading it is successful. 122 bool LoadPolicyFromFile(const base::FilePath& policy_path); 123 124 // Path of the default policy file, e.g. /path/to/policy. In order to make 125 // device policy more resilient against broken files, this class also tries to 126 // load indexed paths /path/to/policy.1, /path/to/policy.2 etc., see 127 // resilient_policy_utils.h. 128 base::FilePath policy_path_; 129 base::FilePath keyfile_path_; 130 std::unique_ptr<InstallAttributesReader> install_attributes_reader_; 131 enterprise_management::PolicyFetchResponse policy_; 132 enterprise_management::PolicyData policy_data_; 133 enterprise_management::ChromeDeviceSettingsProto device_policy_; 134 135 // If true, verify that policy files are owned by root. True in production 136 // but can be set to false by tests. 137 bool verify_root_ownership_ = true; 138 // If false, all types of verification are disabled. True in production 139 // but can be set to false by tests. 140 bool verify_policy_ = true; 141 142 DISALLOW_COPY_AND_ASSIGN(DevicePolicyImpl); 143 }; 144 } // namespace policy 145 146 #pragma GCC visibility pop 147 148 #endif // LIBBRILLO_POLICY_DEVICE_POLICY_IMPL_H_ 149