| /* |
| * Copyright 2014, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.managedprovisioning.common; |
| |
| import static android.app.admin.DevicePolicyManager.ACTION_PROVISION_MANAGED_DEVICE; |
| import static android.app.admin.DevicePolicyManager.ACTION_PROVISION_MANAGED_DEVICE_FROM_TRUSTED_SOURCE; |
| import static android.app.admin.DevicePolicyManager.ACTION_PROVISION_MANAGED_PROFILE; |
| import static android.app.admin.DevicePolicyManager.ACTION_PROVISION_MANAGED_SHAREABLE_DEVICE; |
| import static android.app.admin.DevicePolicyManager.ACTION_PROVISION_MANAGED_USER; |
| import static android.app.admin.DevicePolicyManager.MIME_TYPE_PROVISIONING_NFC; |
| import static android.nfc.NfcAdapter.ACTION_NDEF_DISCOVERED; |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| |
| import android.accounts.Account; |
| import android.accounts.AccountManager; |
| import android.accounts.AccountManagerFuture; |
| import android.accounts.AuthenticatorException; |
| import android.accounts.OperationCanceledException; |
| import android.app.admin.DevicePolicyManager; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.ActivityInfo; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.IPackageManager; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.content.pm.ResolveInfo; |
| import android.content.pm.UserInfo; |
| import android.graphics.Color; |
| import android.net.ConnectivityManager; |
| import android.net.NetworkInfo; |
| import android.net.wifi.WifiManager; |
| import android.nfc.NdefMessage; |
| import android.nfc.NdefRecord; |
| import android.nfc.NfcAdapter; |
| import android.os.Build; |
| import android.os.Bundle; |
| import android.os.Parcelable; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemProperties; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.os.storage.StorageManager; |
| import android.provider.Settings.Global; |
| import android.provider.Settings.Secure; |
| import android.text.TextUtils; |
| import android.util.Base64; |
| |
| import java.io.IOException; |
| import java.lang.Integer; |
| import java.lang.Math; |
| import java.lang.String; |
| import java.nio.charset.StandardCharsets; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.TimeUnit; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.managedprovisioning.FinalizationActivity; |
| import com.android.managedprovisioning.ProvisionLogger; |
| import com.android.managedprovisioning.TrampolineActivity; |
| import com.android.managedprovisioning.model.ProvisioningParams; |
| import com.android.managedprovisioning.model.PackageDownloadInfo; |
| |
| /** |
| * Class containing various auxiliary methods. |
| */ |
| public class Utils { |
| private static final int ACCOUNT_COPY_TIMEOUT_SECONDS = 60 * 3; // 3 minutes |
| |
| private static final int THRESHOLD_BRIGHT_COLOR = 160; // A color needs a brightness of at least |
| // this value to be considered bright. (brightness being between 0 and 255). |
| public Utils() {} |
| |
| /** |
| * Returns the currently installed system apps on a given user. |
| * |
| * <p>Calls into the {@link IPackageManager} to retrieve all installed packages on the given |
| * user and returns the package names of all system apps. |
| * |
| * @param ipm an {@link IPackageManager} object |
| * @param userId the id of the user we are interested in |
| */ |
| public Set<String> getCurrentSystemApps(IPackageManager ipm, int userId) { |
| Set<String> apps = new HashSet<String>(); |
| List<ApplicationInfo> aInfos = null; |
| try { |
| aInfos = ipm.getInstalledApplications( |
| PackageManager.GET_UNINSTALLED_PACKAGES, userId).getList(); |
| } catch (RemoteException neverThrown) { |
| ProvisionLogger.loge("This should not happen.", neverThrown); |
| } |
| for (ApplicationInfo aInfo : aInfos) { |
| if ((aInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) { |
| apps.add(aInfo.packageName); |
| } |
| } |
| return apps; |
| } |
| |
| /** |
| * Disables a given component in a given user. |
| * |
| * @param toDisable the component that should be disabled |
| * @param userId the id of the user where the component should be disabled. |
| */ |
| public void disableComponent(ComponentName toDisable, int userId) { |
| setComponentEnabledSetting( |
| IPackageManager.Stub.asInterface(ServiceManager.getService("package")), |
| toDisable, |
| PackageManager.COMPONENT_ENABLED_STATE_DISABLED, |
| userId); |
| } |
| |
| /** |
| * Enables a given component in a given user. |
| * |
| * @param toEnable the component that should be enabled |
| * @param userId the id of the user where the component should be disabled. |
| */ |
| public void enableComponent(ComponentName toEnable, int userId) { |
| setComponentEnabledSetting( |
| IPackageManager.Stub.asInterface(ServiceManager.getService("package")), |
| toEnable, |
| PackageManager.COMPONENT_ENABLED_STATE_ENABLED, |
| userId); |
| } |
| |
| /** |
| * Disables a given component in a given user. |
| * |
| * @param ipm an {@link IPackageManager} object |
| * @param toDisable the component that should be disabled |
| * @param userId the id of the user where the component should be disabled. |
| */ |
| @VisibleForTesting |
| void setComponentEnabledSetting(IPackageManager ipm, ComponentName toDisable, |
| int enabledSetting, int userId) { |
| try { |
| ipm.setComponentEnabledSetting(toDisable, |
| enabledSetting, PackageManager.DONT_KILL_APP, |
| userId); |
| } catch (RemoteException neverThrown) { |
| ProvisionLogger.loge("This should not happen.", neverThrown); |
| } catch (Exception e) { |
| ProvisionLogger.logw("Component not found, not changing enabled setting: " |
| + toDisable.toShortString()); |
| } |
| } |
| |
| /** |
| * Check the validity of the admin component name supplied, or try to infer this componentName |
| * from the package. |
| * |
| * We are supporting lookup by package name for legacy reasons. |
| * |
| * If mdmComponentName is supplied (not null): |
| * mdmPackageName is ignored. |
| * Check that the package of mdmComponentName is installed, that mdmComponentName is a |
| * receiver in this package, and return it. The receiver can be in disabled state. |
| * |
| * Otherwise: |
| * mdmPackageName must be supplied (not null). |
| * Check that this package is installed, try to infer a potential device admin in this package, |
| * and return it. |
| */ |
| // TODO: Add unit tests |
| public ComponentName findDeviceAdmin(String mdmPackageName, |
| ComponentName mdmComponentName, Context c) throws IllegalProvisioningArgumentException { |
| if (mdmComponentName != null) { |
| mdmPackageName = mdmComponentName.getPackageName(); |
| } |
| if (mdmPackageName == null) { |
| throw new IllegalProvisioningArgumentException("Neither the package name nor the" |
| + " component name of the admin are supplied"); |
| } |
| PackageInfo pi; |
| try { |
| pi = c.getPackageManager().getPackageInfo(mdmPackageName, |
| PackageManager.GET_RECEIVERS | PackageManager.MATCH_DISABLED_COMPONENTS); |
| } catch (NameNotFoundException e) { |
| throw new IllegalProvisioningArgumentException("Mdm "+ mdmPackageName |
| + " is not installed. ", e); |
| } |
| if (mdmComponentName != null) { |
| // If the component was specified in the intent: check that it is in the manifest. |
| checkAdminComponent(mdmComponentName, pi); |
| return mdmComponentName; |
| } else { |
| // Otherwise: try to find a potential device admin in the manifest. |
| return findDeviceAdminInPackage(mdmPackageName, pi); |
| } |
| } |
| |
| /** |
| * Verifies that an admin component is part of a given package. |
| * |
| * @param mdmComponentName the admin component to be checked |
| * @param pi the {@link PackageInfo} of the package to be checked. |
| * |
| * @throws IllegalProvisioningArgumentException if the given component is not part of the |
| * package |
| */ |
| private void checkAdminComponent(ComponentName mdmComponentName, PackageInfo pi) |
| throws IllegalProvisioningArgumentException{ |
| for (ActivityInfo ai : pi.receivers) { |
| if (mdmComponentName.getClassName().equals(ai.name)) { |
| return; |
| } |
| } |
| throw new IllegalProvisioningArgumentException("The component " + mdmComponentName |
| + " cannot be found"); |
| } |
| |
| private ComponentName findDeviceAdminInPackage(String mdmPackageName, PackageInfo pi) |
| throws IllegalProvisioningArgumentException { |
| ComponentName mdmComponentName = null; |
| for (ActivityInfo ai : pi.receivers) { |
| if (!TextUtils.isEmpty(ai.permission) && |
| ai.permission.equals(android.Manifest.permission.BIND_DEVICE_ADMIN)) { |
| if (mdmComponentName != null) { |
| throw new IllegalProvisioningArgumentException("There are several " |
| + "device admins in " + mdmPackageName + " but no one in specified"); |
| } else { |
| mdmComponentName = new ComponentName(mdmPackageName, ai.name); |
| } |
| } |
| } |
| if (mdmComponentName == null) { |
| throw new IllegalProvisioningArgumentException("There are no device admins in" |
| + mdmPackageName); |
| } |
| return mdmComponentName; |
| } |
| |
| /** |
| * Returns whether the current user is the system user. |
| */ |
| public boolean isCurrentUserSystem() { |
| return UserHandle.myUserId() == UserHandle.USER_SYSTEM; |
| } |
| |
| /** |
| * Returns whether the device is currently managed. |
| */ |
| public boolean isDeviceManaged(Context context) { |
| DevicePolicyManager dpm = |
| (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE); |
| return dpm.isDeviceManaged(); |
| } |
| |
| /** |
| * Returns whether the calling user is a managed profile. |
| */ |
| public boolean isManagedProfile(Context context) { |
| UserManager um = (UserManager) context.getSystemService(Context.USER_SERVICE); |
| UserInfo user = um.getUserInfo(UserHandle.myUserId()); |
| return user != null ? user.isManagedProfile() : false; |
| } |
| |
| /** |
| * Returns true if the given package requires an update. |
| * |
| * <p>There are two cases where an update is required: |
| * 1. The package is not currently present on the device. |
| * 2. The package is present, but the version is below the minimum supported version. |
| * |
| * @param packageName the package to be checked for updates |
| * @param minSupportedVersion the minimum supported version |
| * @param context a {@link Context} object |
| */ |
| public boolean packageRequiresUpdate(String packageName, int minSupportedVersion, |
| Context context) { |
| try { |
| PackageInfo packageInfo = context.getPackageManager().getPackageInfo(packageName, 0); |
| // Always download packages if no minimum version given. |
| if (minSupportedVersion != PackageDownloadInfo.DEFAULT_MINIMUM_VERSION |
| && packageInfo.versionCode >= minSupportedVersion) { |
| return false; |
| } |
| } catch (NameNotFoundException e) { |
| // Package not on device. |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Transforms a string into a byte array. |
| * |
| * @param s the string to be transformed |
| */ |
| public byte[] stringToByteArray(String s) |
| throws NumberFormatException { |
| try { |
| return Base64.decode(s, Base64.URL_SAFE); |
| } catch (IllegalArgumentException e) { |
| throw new NumberFormatException("Incorrect format. Should be Url-safe Base64 encoded."); |
| } |
| } |
| |
| /** |
| * Transforms a byte array into a string. |
| * |
| * @param bytes the byte array to be transformed |
| */ |
| public String byteArrayToString(byte[] bytes) { |
| return Base64.encodeToString(bytes, Base64.URL_SAFE | Base64.NO_PADDING | Base64.NO_WRAP); |
| } |
| |
| /** |
| * Sets user setup complete on a given user. |
| * |
| * <p>This will set USER_SETUP_COMPLETE to 1 on the given user. |
| */ |
| public void markUserSetupComplete(Context context, int userId) { |
| ProvisionLogger.logd("Setting USER_SETUP_COMPLETE to 1 for user " + userId); |
| Secure.putIntForUser(context.getContentResolver(), Secure.USER_SETUP_COMPLETE, 1, userId); |
| } |
| |
| /** |
| * Returns whether USER_SETUP_COMPLETE is set on the calling user. |
| */ |
| public boolean isUserSetupCompleted(Context context) { |
| return Secure.getInt(context.getContentResolver(), Secure.USER_SETUP_COMPLETE, 0) != 0; |
| } |
| |
| /** |
| * Returns whether DEVICE_PROVISIONED is set. |
| */ |
| public boolean isDeviceProvisioned(Context context) { |
| return Global.getInt(context.getContentResolver(), Global.DEVICE_PROVISIONED, 0) != 0; |
| } |
| |
| /** |
| * Set the current users userProvisioningState depending on the following factors: |
| * <ul> |
| * <li>We're setting up a managed-profile - need to set state on two users.</li> |
| * <li>User-setup has previously been completed or not - skip states relating to |
| * communicating with setup-wizard</li> |
| * <li>DPC requested we skip the rest of setup-wizard.</li> |
| * </ul> |
| * |
| * @param context a {@link Context} object |
| * @param params configuration for current provisioning attempt |
| */ |
| // TODO: Add unit tests |
| public void markUserProvisioningStateInitiallyDone(Context context, |
| ProvisioningParams params) { |
| int currentUserId = UserHandle.myUserId(); |
| int managedProfileUserId = UserHandle.USER_NULL; |
| DevicePolicyManager dpm = context.getSystemService(DevicePolicyManager.class); |
| |
| // new provisioning state for current user, if non-null |
| Integer newState = null; |
| // New provisioning state for managed-profile of current user, if non-null. |
| Integer newProfileState = null; |
| |
| boolean userSetupCompleted = isUserSetupCompleted(context); |
| if (params.provisioningAction.equals(ACTION_PROVISION_MANAGED_PROFILE)) { |
| // Managed profiles are a special case as two users are involved. |
| managedProfileUserId = getManagedProfile(context).getIdentifier(); |
| if (userSetupCompleted) { |
| // SUW on current user is complete, so nothing much to do beyond indicating we're |
| // all done. |
| newProfileState = DevicePolicyManager.STATE_USER_SETUP_FINALIZED; |
| } else { |
| // We're still in SUW, so indicate that a managed-profile was setup on current user, |
| // and that we're awaiting finalization on both. |
| newState = DevicePolicyManager.STATE_USER_PROFILE_COMPLETE; |
| newProfileState = DevicePolicyManager.STATE_USER_SETUP_COMPLETE; |
| } |
| } else if (userSetupCompleted) { |
| // User setup was previously completed this is an unexpected case. |
| ProvisionLogger.logw("user_setup_complete set, but provisioning was started"); |
| } else if (params.skipUserSetup) { |
| // DPC requested setup-wizard is skipped, indicate this to SUW. |
| newState = DevicePolicyManager.STATE_USER_SETUP_COMPLETE; |
| } else { |
| // DPC requested setup-wizard is not skipped, indicate this to SUW. |
| newState = DevicePolicyManager.STATE_USER_SETUP_INCOMPLETE; |
| } |
| |
| if (newState != null) { |
| setUserProvisioningState(dpm, newState, currentUserId); |
| } |
| if (newProfileState != null) { |
| setUserProvisioningState(dpm, newProfileState, managedProfileUserId); |
| } |
| if (!userSetupCompleted) { |
| // We expect a PROVISIONING_FINALIZATION intent to finish setup if we're still in |
| // user-setup. |
| FinalizationActivity.storeProvisioningParams(context, params); |
| } |
| } |
| |
| /** |
| * Finalize the current users userProvisioningState depending on the following factors: |
| * <ul> |
| * <li>We're setting up a managed-profile - need to set state on two users.</li> |
| * </ul> |
| * |
| * @param context a {@link Context} object |
| * @param params configuration for current provisioning attempt - if null (because |
| * ManagedProvisioning wasn't used for first phase of provisioning) aassumes we |
| * can just mark current user as being in finalized provisioning state |
| */ |
| // TODO: Add unit tests |
| public void markUserProvisioningStateFinalized(Context context, |
| ProvisioningParams params) { |
| int currentUserId = UserHandle.myUserId(); |
| int managedProfileUserId = -1; |
| DevicePolicyManager dpm = context.getSystemService(DevicePolicyManager.class); |
| Integer newState = null; |
| Integer newProfileState = null; |
| |
| if (params != null && params.provisioningAction.equals(ACTION_PROVISION_MANAGED_PROFILE)) { |
| // Managed profiles are a special case as two users are involved. |
| managedProfileUserId = getManagedProfile(context).getIdentifier(); |
| |
| newState = DevicePolicyManager.STATE_USER_UNMANAGED; |
| newProfileState = DevicePolicyManager.STATE_USER_SETUP_FINALIZED; |
| } else { |
| newState = DevicePolicyManager.STATE_USER_SETUP_FINALIZED; |
| } |
| |
| if (newState != null) { |
| setUserProvisioningState(dpm, newState, currentUserId); |
| } |
| if (newProfileState != null) { |
| setUserProvisioningState(dpm, newProfileState, managedProfileUserId); |
| } |
| } |
| |
| private void setUserProvisioningState(DevicePolicyManager dpm, int state, int userId) { |
| ProvisionLogger.logi("Setting userProvisioningState for user " + userId + " to: " + state); |
| dpm.setUserProvisioningState(state, userId); |
| } |
| |
| /** |
| * Returns the first existing managed profile if any present, null otherwise. |
| * |
| * <p>Note that we currently only support one managed profile per device. |
| */ |
| // TODO: Add unit tests |
| public UserHandle getManagedProfile(Context context) { |
| UserManager userManager = (UserManager) context.getSystemService(Context.USER_SERVICE); |
| int currentUserId = userManager.getUserHandle(); |
| List<UserInfo> userProfiles = userManager.getProfiles(currentUserId); |
| for (UserInfo profile : userProfiles) { |
| if (profile.isManagedProfile()) { |
| return new UserHandle(profile.id); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the user id of an already existing managed profile or -1 if none exists. |
| */ |
| // TODO: Add unit tests |
| public int alreadyHasManagedProfile(Context context) { |
| UserHandle managedUser = getManagedProfile(context); |
| if (managedUser != null) { |
| return managedUser.getIdentifier(); |
| } else { |
| return -1; |
| } |
| } |
| |
| /** |
| * Removes an account. |
| * |
| * <p>This removes the given account from the calling user's list of accounts. |
| * |
| * @param context a {@link Context} object |
| * @param account the account to be removed |
| */ |
| // TODO: Add unit tests |
| public void removeAccount(Context context, Account account) { |
| try { |
| AccountManager accountManager = |
| (AccountManager) context.getSystemService(Context.ACCOUNT_SERVICE); |
| AccountManagerFuture<Bundle> bundle = accountManager.removeAccount(account, |
| null, null /* callback */, null /* handler */); |
| // Block to get the result of the removeAccount operation |
| if (bundle.getResult().getBoolean(AccountManager.KEY_BOOLEAN_RESULT, false)) { |
| ProvisionLogger.logw("Account removed from the primary user."); |
| } else { |
| Intent removeIntent = (Intent) bundle.getResult().getParcelable( |
| AccountManager.KEY_INTENT); |
| if (removeIntent != null) { |
| ProvisionLogger.logi("Starting activity to remove account"); |
| TrampolineActivity.startActivity(context, removeIntent); |
| } else { |
| ProvisionLogger.logw("Could not remove account from the primary user."); |
| } |
| } |
| } catch (OperationCanceledException | AuthenticatorException | IOException e) { |
| ProvisionLogger.logw("Exception removing account from the primary user.", e); |
| } |
| } |
| |
| /** |
| * Copies an account to a given user. |
| * |
| * <p>Copies a given account form {@code sourceUser} to {@code targetUser}. This call is |
| * blocking until the operation has succeeded. If within a timeout the account hasn't been |
| * successfully copied to the new user, we give up. |
| * |
| * @param context a {@link Context} object |
| * @param accountToMigrate the account to be migrated |
| * @param sourceUser the {@link UserHandle} of the user to copy from |
| * @param targetUser the {@link UserHandle} of the user to copy to |
| * @return whether account migration successfully completed |
| */ |
| public boolean maybeCopyAccount(Context context, Account accountToMigrate, |
| UserHandle sourceUser, UserHandle targetUser) { |
| if (accountToMigrate == null) { |
| ProvisionLogger.logd("No account to migrate."); |
| return false; |
| } |
| if (sourceUser.equals(targetUser)) { |
| ProvisionLogger.loge("sourceUser and targetUser are the same, won't migrate account."); |
| return false; |
| } |
| ProvisionLogger.logd("Attempting to copy account from " + sourceUser + " to " + targetUser); |
| try { |
| AccountManager accountManager = |
| (AccountManager) context.getSystemService(Context.ACCOUNT_SERVICE); |
| boolean copySucceeded = accountManager.copyAccountToUser( |
| accountToMigrate, |
| sourceUser, |
| targetUser, |
| /* callback= */ null, /* handler= */ null) |
| .getResult(ACCOUNT_COPY_TIMEOUT_SECONDS, TimeUnit.SECONDS); |
| if (copySucceeded) { |
| ProvisionLogger.logi("Copied account to " + targetUser); |
| return true; |
| } else { |
| ProvisionLogger.loge("Could not copy account to " + targetUser); |
| } |
| } catch (OperationCanceledException | AuthenticatorException | IOException e) { |
| ProvisionLogger.loge("Exception copying account to " + targetUser, e); |
| } |
| return false; |
| } |
| |
| /** |
| * Returns whether FRP is supported on the device. |
| */ |
| public boolean isFrpSupported(Context context) { |
| Object pdbManager = context.getSystemService(Context.PERSISTENT_DATA_BLOCK_SERVICE); |
| return pdbManager != null; |
| } |
| |
| /** |
| * Translates a given managed provisioning intent to its corresponding provisioning flow, using |
| * the action from the intent. |
| * |
| * <p/>This is necessary because, unlike other provisioning actions which has 1:1 mapping, there |
| * are multiple actions that can trigger the device owner provisioning flow. This includes |
| * {@link ACTION_PROVISION_MANAGED_DEVICE}, {@link ACTION_NDEF_DISCOVERED} and |
| * {@link ACTION_PROVISION_MANAGED_DEVICE_FROM_TRUSTED_SOURCE}. These 3 actions are equivalent |
| * excepts they are sent from a different source. |
| * |
| * @return the appropriate DevicePolicyManager declared action for the given incoming intent. |
| * @throws IllegalProvisioningArgumentException if intent is malformed |
| */ |
| // TODO: Add unit tests |
| public String mapIntentToDpmAction(Intent intent) |
| throws IllegalProvisioningArgumentException { |
| if (intent == null || intent.getAction() == null) { |
| throw new IllegalProvisioningArgumentException("Null intent action."); |
| } |
| |
| // Map the incoming intent to a DevicePolicyManager.ACTION_*, as there is a N:1 mapping in |
| // some cases. |
| String dpmProvisioningAction; |
| switch (intent.getAction()) { |
| // Trivial cases. |
| case ACTION_PROVISION_MANAGED_DEVICE: |
| case ACTION_PROVISION_MANAGED_SHAREABLE_DEVICE: |
| case ACTION_PROVISION_MANAGED_USER: |
| case ACTION_PROVISION_MANAGED_PROFILE: |
| dpmProvisioningAction = intent.getAction(); |
| break; |
| |
| // NFC cases which need to take mime-type into account. |
| case ACTION_NDEF_DISCOVERED: |
| String mimeType = intent.getType(); |
| switch (mimeType) { |
| case MIME_TYPE_PROVISIONING_NFC: |
| dpmProvisioningAction = ACTION_PROVISION_MANAGED_DEVICE; |
| break; |
| |
| default: |
| throw new IllegalProvisioningArgumentException( |
| "Unknown NFC bump mime-type: " + mimeType); |
| } |
| break; |
| |
| // Device owner provisioning from a trusted app. |
| // TODO (b/27217042): review for new management modes in split system-user model |
| case ACTION_PROVISION_MANAGED_DEVICE_FROM_TRUSTED_SOURCE: |
| dpmProvisioningAction = ACTION_PROVISION_MANAGED_DEVICE; |
| break; |
| |
| default: |
| throw new IllegalProvisioningArgumentException("Unknown intent action " |
| + intent.getAction()); |
| } |
| return dpmProvisioningAction; |
| } |
| |
| /** |
| * Sends an intent to trigger a factory reset. |
| */ |
| // TODO: Move the FR intent into a Globals class. |
| public void sendFactoryResetBroadcast(Context context, String reason) { |
| Intent intent = new Intent(Intent.ACTION_MASTER_CLEAR); |
| intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); |
| intent.putExtra(Intent.EXTRA_REASON, reason); |
| context.sendBroadcast(intent); |
| } |
| |
| /** |
| * Returns whether the given provisioning action is a profile owner action. |
| */ |
| // TODO: Move the list of device owner actions into a Globals class. |
| public final boolean isProfileOwnerAction(String action) { |
| return action.equals(ACTION_PROVISION_MANAGED_PROFILE) |
| || action.equals(ACTION_PROVISION_MANAGED_USER); |
| } |
| |
| /** |
| * Returns whether the given provisioning action is a device owner action. |
| */ |
| // TODO: Move the list of device owner actions into a Globals class. |
| public final boolean isDeviceOwnerAction(String action) { |
| return action.equals(ACTION_PROVISION_MANAGED_DEVICE) |
| || action.equals(ACTION_PROVISION_MANAGED_SHAREABLE_DEVICE); |
| } |
| |
| /** |
| * Returns whether the device currently has connectivity. |
| */ |
| public boolean isConnectedToNetwork(Context context) { |
| NetworkInfo info = getActiveNetworkInfo(context); |
| return info != null && info.isConnected(); |
| } |
| |
| /** |
| * Returns whether the device is currently connected to a wifi. |
| */ |
| public boolean isConnectedToWifi(Context context) { |
| NetworkInfo info = getActiveNetworkInfo(context); |
| return info != null |
| && info.isConnected() |
| && info.getType() == ConnectivityManager.TYPE_WIFI; |
| } |
| |
| private NetworkInfo getActiveNetworkInfo(Context context) { |
| ConnectivityManager cm = |
| (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); |
| if (cm != null) { |
| return cm.getActiveNetworkInfo(); |
| } |
| return null; |
| } |
| |
| /** |
| * Returns whether encryption is required on this device. |
| * |
| * <p>Encryption is required if the device is not currently encrypted and the persistent |
| * system flag {@code persist.sys.no_req_encrypt} is not set. |
| */ |
| public boolean isEncryptionRequired() { |
| return !isPhysicalDeviceEncrypted() |
| && !SystemProperties.getBoolean("persist.sys.no_req_encrypt", false); |
| } |
| |
| /** |
| * Returns whether the device is currently encrypted. |
| */ |
| public boolean isPhysicalDeviceEncrypted() { |
| return StorageManager.isEncrypted(); |
| } |
| |
| /** |
| * Returns the wifi pick intent. |
| */ |
| // TODO: Move this intent into a Globals class. |
| public Intent getWifiPickIntent() { |
| Intent wifiIntent = new Intent(WifiManager.ACTION_PICK_WIFI_NETWORK); |
| wifiIntent.putExtra("extra_prefs_show_button_bar", true); |
| wifiIntent.putExtra("wifi_enable_next_on_connect", true); |
| return wifiIntent; |
| } |
| |
| /** |
| * Returns whether the device has a split system user. |
| * |
| * <p>Split system user means that user 0 is system only and all meat users are separate from |
| * the system user. |
| */ |
| public boolean isSplitSystemUser() { |
| return UserManager.isSplitSystemUser(); |
| } |
| |
| /** |
| * Returns whether the currently chosen launcher supports managed profiles. |
| * |
| * <p>A launcher is deemed to support managed profiles when its target API version is at least |
| * {@link Build.VERSION_CODES#LOLLIPOP}. |
| */ |
| public boolean currentLauncherSupportsManagedProfiles(Context context) { |
| Intent intent = new Intent(Intent.ACTION_MAIN); |
| intent.addCategory(Intent.CATEGORY_HOME); |
| |
| PackageManager pm = context.getPackageManager(); |
| ResolveInfo launcherResolveInfo = pm.resolveActivity(intent, |
| PackageManager.MATCH_DEFAULT_ONLY); |
| if (launcherResolveInfo == null) { |
| return false; |
| } |
| try { |
| // If the user has not chosen a default launcher, then launcherResolveInfo will be |
| // referring to the resolver activity. It is fine to create a managed profile in |
| // this case since there will always be at least one launcher on the device that |
| // supports managed profile feature. |
| ApplicationInfo launcherAppInfo = pm.getApplicationInfo( |
| launcherResolveInfo.activityInfo.packageName, 0 /* default flags */); |
| return versionNumberAtLeastL(launcherAppInfo.targetSdkVersion); |
| } catch (PackageManager.NameNotFoundException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Returns whether the given version number is at least lollipop. |
| * |
| * @param versionNumber the version number to be verified. |
| */ |
| private boolean versionNumberAtLeastL(int versionNumber) { |
| return versionNumber >= Build.VERSION_CODES.LOLLIPOP; |
| } |
| |
| public boolean isBrightColor(int color) { |
| // we're using the brightness formula: (r * 299 + g * 587 + b * 144) / 1000 |
| return Color.red(color) * 299 + Color.green(color) * 587 + Color.blue(color) * 114 |
| >= 1000 * THRESHOLD_BRIGHT_COLOR; |
| } |
| } |
