src/com/android/settings/applications/ApplicationFeatureProviderImpl.java - platform/packages/apps/Settings - Git at Google

 /*
  * Copyright (C) 2016 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.settings.applications;

 import android.Manifest;
 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.ComponentInfo;
 import android.content.pm.IPackageManager;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.content.pm.ServiceInfo;
 import android.content.pm.UserInfo;
 import android.location.LocationManager;
 import android.os.RemoteException;
 import android.os.UserManager;
 import android.service.euicc.EuiccService;
 import android.telecom.DefaultDialerManager;
 import android.text.TextUtils;
 import android.util.ArraySet;
 import android.util.Log;

 import androidx.annotation.VisibleForTesting;

 import com.android.internal.telephony.SmsApplication;
 import com.android.settings.R;

 import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;

 public class ApplicationFeatureProviderImpl implements ApplicationFeatureProvider {
     private static final String TAG = "AppFeatureProviderImpl";

     protected final Context mContext;
     private final PackageManager mPm;
     private final IPackageManager mPms;
     private final DevicePolicyManager mDpm;
     private final UserManager mUm;
     /** Flags to use when querying PackageManager for Euicc component implementations. */
     private static final int EUICC_QUERY_FLAGS =
             PackageManager.MATCH_SYSTEM_ONLY | PackageManager.MATCH_DEBUG_TRIAGED_MISSING
                 | PackageManager.GET_RESOLVED_FILTER;

     public ApplicationFeatureProviderImpl(Context context, PackageManager pm,
             IPackageManager pms, DevicePolicyManager dpm) {
         mContext = context.getApplicationContext();
         mPm = pm;
         mPms = pms;
         mDpm = dpm;
         mUm = UserManager.get(mContext);
     }

     @Override
     public void calculateNumberOfPolicyInstalledApps(boolean async, NumberOfAppsCallback callback) {
         final CurrentUserAndManagedProfilePolicyInstalledAppCounter counter =
                 new CurrentUserAndManagedProfilePolicyInstalledAppCounter(mContext, mPm, callback);
         if (async) {
             counter.execute();
         } else {
             counter.executeInForeground();
         }
     }

     @Override
     public void listPolicyInstalledApps(ListOfAppsCallback callback) {
         final CurrentUserPolicyInstalledAppLister lister =
                 new CurrentUserPolicyInstalledAppLister(mPm, mUm, callback);
         lister.execute();
     }

     @Override
     public void calculateNumberOfAppsWithAdminGrantedPermissions(String[] permissions,
             boolean async, NumberOfAppsCallback callback) {
         final CurrentUserAndManagedProfileAppWithAdminGrantedPermissionsCounter counter =
                 new CurrentUserAndManagedProfileAppWithAdminGrantedPermissionsCounter(mContext,
                         permissions, mPm, mPms, mDpm, callback);
         if (async) {
             counter.execute();
         } else {
             counter.executeInForeground();
         }
     }

     @Override
     public void listAppsWithAdminGrantedPermissions(String[] permissions,
             ListOfAppsCallback callback) {
         final CurrentUserAppWithAdminGrantedPermissionsLister lister =
                 new CurrentUserAppWithAdminGrantedPermissionsLister(permissions, mPm, mPms, mDpm,
                         mUm, callback);
         lister.execute();
     }

     @Override
     public List<UserAppInfo> findPersistentPreferredActivities(int userId, Intent[] intents) {
         final List<UserAppInfo> preferredActivities = new ArrayList<>();
         final Set<UserAppInfo> uniqueApps = new ArraySet<>();
         final UserInfo userInfo = mUm.getUserInfo(userId);
         for (final Intent intent : intents) {
             try {
                 final ResolveInfo resolveInfo =
                         mPms.findPersistentPreferredActivity(intent, userId);
                 if (resolveInfo != null) {
                     ComponentInfo componentInfo = null;
                     if (resolveInfo.activityInfo != null) {
                         componentInfo = resolveInfo.activityInfo;
                     } else if (resolveInfo.serviceInfo != null) {
                         componentInfo = resolveInfo.serviceInfo;
                     } else if (resolveInfo.providerInfo != null) {
                         componentInfo = resolveInfo.providerInfo;
                     }
                     if (componentInfo != null) {
                         UserAppInfo info = new UserAppInfo(userInfo, componentInfo.applicationInfo);
                         if (uniqueApps.add(info)) {
                             preferredActivities.add(info);
                         }
                     }
                 }
             } catch (RemoteException exception) {
             }
         }
         return preferredActivities;
     }

     @Override
     public Set<String> getKeepEnabledPackages() {
         // Find current default phone/sms app. We should keep them enabled.
         final Set<String> keepEnabledPackages = new ArraySet<>();
         final String defaultDialer = DefaultDialerManager.getDefaultDialerApplication(mContext);
         if (!TextUtils.isEmpty(defaultDialer)) {
             keepEnabledPackages.add(defaultDialer);
         }
         final ComponentName defaultSms = SmsApplication.getDefaultSmsApplication(
                 mContext, true /* updateIfNeeded */);
         if (defaultSms != null) {
             keepEnabledPackages.add(defaultSms.getPackageName());
         }

         // Keep Euicc Service enabled.
         final ComponentInfo euicc = findEuiccService(mPm);
         if (euicc != null) {
             keepEnabledPackages.add(euicc.packageName);
         }

         keepEnabledPackages.addAll(getEnabledPackageWhitelist());

         final LocationManager locationManager =
                 (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
         final String locationHistoryPackage = locationManager.getExtraLocationControllerPackage();
         if (locationHistoryPackage != null) {
             keepEnabledPackages.add(locationHistoryPackage);
         }
         return keepEnabledPackages;
     }

     private Set<String> getEnabledPackageWhitelist() {
         final Set<String> keepEnabledPackages = new ArraySet<>();

         // Keep Settings intelligence enabled, otherwise search feature will be disabled.
         keepEnabledPackages.add(
                 mContext.getString(R.string.config_settingsintelligence_package_name));

         // Keep Package Installer enabled.
         keepEnabledPackages.add(mContext.getString(R.string.config_package_installer_package_name));

         return keepEnabledPackages;
     }

     private static class CurrentUserAndManagedProfilePolicyInstalledAppCounter
             extends InstalledAppCounter {
         private NumberOfAppsCallback mCallback;

         CurrentUserAndManagedProfilePolicyInstalledAppCounter(Context context,
                 PackageManager packageManager, NumberOfAppsCallback callback) {
             super(context, PackageManager.INSTALL_REASON_POLICY, packageManager);
             mCallback = callback;
         }

         @Override
         protected void onCountComplete(int num) {
             mCallback.onNumberOfAppsResult(num);
         }
     }

     private static class CurrentUserAndManagedProfileAppWithAdminGrantedPermissionsCounter
             extends AppWithAdminGrantedPermissionsCounter {
         private NumberOfAppsCallback mCallback;

         CurrentUserAndManagedProfileAppWithAdminGrantedPermissionsCounter(Context context,
                 String[] permissions, PackageManager packageManager,
                 IPackageManager packageManagerService,
                 DevicePolicyManager devicePolicyManager, NumberOfAppsCallback callback) {
             super(context, permissions, packageManager, packageManagerService, devicePolicyManager);
             mCallback = callback;
         }

         @Override
         protected void onCountComplete(int num) {
             mCallback.onNumberOfAppsResult(num);
         }
     }

     private static class CurrentUserPolicyInstalledAppLister extends InstalledAppLister {
         private ListOfAppsCallback mCallback;

         CurrentUserPolicyInstalledAppLister(PackageManager packageManager,
                 UserManager userManager, ListOfAppsCallback callback) {
             super(packageManager, userManager);
             mCallback = callback;
         }

         @Override
         protected void onAppListBuilt(List<UserAppInfo> list) {
             mCallback.onListOfAppsResult(list);
         }
     }

     private static class CurrentUserAppWithAdminGrantedPermissionsLister extends
             AppWithAdminGrantedPermissionsLister {
         private ListOfAppsCallback mCallback;

         CurrentUserAppWithAdminGrantedPermissionsLister(String[] permissions,
                 PackageManager packageManager, IPackageManager packageManagerService,
                 DevicePolicyManager devicePolicyManager, UserManager userManager,
                 ListOfAppsCallback callback) {
             super(permissions, packageManager, packageManagerService, devicePolicyManager,
                     userManager);
             mCallback = callback;
         }

         @Override
         protected void onAppListBuilt(List<UserAppInfo> list) {
             mCallback.onListOfAppsResult(list);
         }
     }

     /**
      * Return the component info of the EuiccService to bind to, or null if none were found.
      */
     @VisibleForTesting
     ComponentInfo findEuiccService(PackageManager packageManager) {
         final Intent intent = new Intent(EuiccService.EUICC_SERVICE_INTERFACE);
         final List<ResolveInfo> resolveInfoList =
                 packageManager.queryIntentServices(intent, EUICC_QUERY_FLAGS);
         final ComponentInfo bestComponent = findEuiccService(packageManager, resolveInfoList);
         if (bestComponent == null) {
             Log.w(TAG, "No valid EuiccService implementation found");
         }
         return bestComponent;
     }

     private ComponentInfo findEuiccService(
             PackageManager packageManager, List<ResolveInfo> resolveInfoList) {
         int bestPriority = Integer.MIN_VALUE;
         ComponentInfo bestComponent = null;
         if (resolveInfoList != null) {
             for (ResolveInfo resolveInfo : resolveInfoList) {
                 if (!isValidEuiccComponent(packageManager, resolveInfo)) {
                     continue;
                 }

                 if (resolveInfo.filter.getPriority() > bestPriority) {
                     bestPriority = resolveInfo.filter.getPriority();
                     bestComponent = getComponentInfo(resolveInfo);
                 }
             }
         }

         return bestComponent;
     }

     private boolean isValidEuiccComponent(
             PackageManager packageManager, ResolveInfo resolveInfo) {
         final ComponentInfo componentInfo = getComponentInfo(resolveInfo);
         final String packageName = componentInfo.packageName;

         // Verify that the app is privileged (via granting of a privileged permission).
         if (packageManager.checkPermission(
                 Manifest.permission.WRITE_EMBEDDED_SUBSCRIPTIONS, packageName)
                 != PackageManager.PERMISSION_GRANTED) {
             Log.e(TAG, "Package " + packageName
                     + " does not declare WRITE_EMBEDDED_SUBSCRIPTIONS");
             return false;
         }

         // Verify that only the system can access the component.
         final String permission;
         if (componentInfo instanceof ServiceInfo) {
             permission = ((ServiceInfo) componentInfo).permission;
         } else if (componentInfo instanceof ActivityInfo) {
             permission = ((ActivityInfo) componentInfo).permission;
         } else {
             throw new IllegalArgumentException("Can only verify services/activities");
         }
         if (!TextUtils.equals(permission, Manifest.permission.BIND_EUICC_SERVICE)) {
             Log.e(TAG, "Package " + packageName
                     + " does not require the BIND_EUICC_SERVICE permission");
             return false;
         }

         // Verify that the component declares a priority.
         if (resolveInfo.filter == null || resolveInfo.filter.getPriority() == 0) {
             Log.e(TAG, "Package " + packageName + " does not specify a priority");
             return false;
         }
         return true;
     }

     private ComponentInfo getComponentInfo(ResolveInfo resolveInfo) {
         if (resolveInfo.activityInfo != null) {
             return resolveInfo.activityInfo;
         }
         if (resolveInfo.serviceInfo != null) {
             return resolveInfo.serviceInfo;
         }
         if (resolveInfo.providerInfo != null) {
             return resolveInfo.providerInfo;
         }
         throw new IllegalStateException("Missing ComponentInfo!");
     }
 }
	/*
	* Copyright (C) 2016 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.settings.applications;

	import android.Manifest;
	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.ComponentInfo;
	import android.content.pm.IPackageManager;
	import android.content.pm.PackageManager;
	import android.content.pm.ResolveInfo;
	import android.content.pm.ServiceInfo;
	import android.content.pm.UserInfo;
	import android.location.LocationManager;
	import android.os.RemoteException;
	import android.os.UserManager;
	import android.service.euicc.EuiccService;
	import android.telecom.DefaultDialerManager;
	import android.text.TextUtils;
	import android.util.ArraySet;
	import android.util.Log;

	import androidx.annotation.VisibleForTesting;

	import com.android.internal.telephony.SmsApplication;
	import com.android.settings.R;

	import java.util.ArrayList;
	import java.util.List;
	import java.util.Set;

	public class ApplicationFeatureProviderImpl implements ApplicationFeatureProvider {
	private static final String TAG = "AppFeatureProviderImpl";

	protected final Context mContext;
	private final PackageManager mPm;
	private final IPackageManager mPms;
	private final DevicePolicyManager mDpm;
	private final UserManager mUm;
	/** Flags to use when querying PackageManager for Euicc component implementations. */
	private static final int EUICC_QUERY_FLAGS =
	PackageManager.MATCH_SYSTEM_ONLY \| PackageManager.MATCH_DEBUG_TRIAGED_MISSING
	\| PackageManager.GET_RESOLVED_FILTER;

	public ApplicationFeatureProviderImpl(Context context, PackageManager pm,
	IPackageManager pms, DevicePolicyManager dpm) {
	mContext = context.getApplicationContext();
	mPm = pm;
	mPms = pms;
	mDpm = dpm;
	mUm = UserManager.get(mContext);
	}

	@Override
	public void calculateNumberOfPolicyInstalledApps(boolean async, NumberOfAppsCallback callback) {
	final CurrentUserAndManagedProfilePolicyInstalledAppCounter counter =
	new CurrentUserAndManagedProfilePolicyInstalledAppCounter(mContext, mPm, callback);
	if (async) {
	counter.execute();
	} else {
	counter.executeInForeground();
	}
	}

	@Override
	public void listPolicyInstalledApps(ListOfAppsCallback callback) {
	final CurrentUserPolicyInstalledAppLister lister =
	new CurrentUserPolicyInstalledAppLister(mPm, mUm, callback);
	lister.execute();
	}

	@Override
	public void calculateNumberOfAppsWithAdminGrantedPermissions(String[] permissions,
	boolean async, NumberOfAppsCallback callback) {
	final CurrentUserAndManagedProfileAppWithAdminGrantedPermissionsCounter counter =
	new CurrentUserAndManagedProfileAppWithAdminGrantedPermissionsCounter(mContext,
	permissions, mPm, mPms, mDpm, callback);
	if (async) {
	counter.execute();
	} else {
	counter.executeInForeground();
	}
	}

	@Override
	public void listAppsWithAdminGrantedPermissions(String[] permissions,
	ListOfAppsCallback callback) {
	final CurrentUserAppWithAdminGrantedPermissionsLister lister =
	new CurrentUserAppWithAdminGrantedPermissionsLister(permissions, mPm, mPms, mDpm,
	mUm, callback);
	lister.execute();
	}

	@Override
	public List<UserAppInfo> findPersistentPreferredActivities(int userId, Intent[] intents) {
	final List<UserAppInfo> preferredActivities = new ArrayList<>();
	final Set<UserAppInfo> uniqueApps = new ArraySet<>();
	final UserInfo userInfo = mUm.getUserInfo(userId);
	for (final Intent intent : intents) {
	try {
	final ResolveInfo resolveInfo =
	mPms.findPersistentPreferredActivity(intent, userId);
	if (resolveInfo != null) {
	ComponentInfo componentInfo = null;
	if (resolveInfo.activityInfo != null) {
	componentInfo = resolveInfo.activityInfo;
	} else if (resolveInfo.serviceInfo != null) {
	componentInfo = resolveInfo.serviceInfo;
	} else if (resolveInfo.providerInfo != null) {
	componentInfo = resolveInfo.providerInfo;
	}
	if (componentInfo != null) {
	UserAppInfo info = new UserAppInfo(userInfo, componentInfo.applicationInfo);
	if (uniqueApps.add(info)) {
	preferredActivities.add(info);
	}
	}
	}
	} catch (RemoteException exception) {
	}
	}
	return preferredActivities;
	}

	@Override
	public Set<String> getKeepEnabledPackages() {
	// Find current default phone/sms app. We should keep them enabled.
	final Set<String> keepEnabledPackages = new ArraySet<>();
	final String defaultDialer = DefaultDialerManager.getDefaultDialerApplication(mContext);
	if (!TextUtils.isEmpty(defaultDialer)) {
	keepEnabledPackages.add(defaultDialer);
	}
	final ComponentName defaultSms = SmsApplication.getDefaultSmsApplication(
	mContext, true /* updateIfNeeded */);
	if (defaultSms != null) {
	keepEnabledPackages.add(defaultSms.getPackageName());
	}

	// Keep Euicc Service enabled.
	final ComponentInfo euicc = findEuiccService(mPm);
	if (euicc != null) {
	keepEnabledPackages.add(euicc.packageName);
	}

	keepEnabledPackages.addAll(getEnabledPackageWhitelist());

	final LocationManager locationManager =
	(LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
	final String locationHistoryPackage = locationManager.getExtraLocationControllerPackage();
	if (locationHistoryPackage != null) {
	keepEnabledPackages.add(locationHistoryPackage);
	}
	return keepEnabledPackages;
	}

	private Set<String> getEnabledPackageWhitelist() {
	final Set<String> keepEnabledPackages = new ArraySet<>();

	// Keep Settings intelligence enabled, otherwise search feature will be disabled.
	keepEnabledPackages.add(
	mContext.getString(R.string.config_settingsintelligence_package_name));

	// Keep Package Installer enabled.
	keepEnabledPackages.add(mContext.getString(R.string.config_package_installer_package_name));

	return keepEnabledPackages;
	}

	private static class CurrentUserAndManagedProfilePolicyInstalledAppCounter
	extends InstalledAppCounter {
	private NumberOfAppsCallback mCallback;

	CurrentUserAndManagedProfilePolicyInstalledAppCounter(Context context,
	PackageManager packageManager, NumberOfAppsCallback callback) {
	super(context, PackageManager.INSTALL_REASON_POLICY, packageManager);
	mCallback = callback;
	}

	@Override
	protected void onCountComplete(int num) {
	mCallback.onNumberOfAppsResult(num);
	}
	}

	private static class CurrentUserAndManagedProfileAppWithAdminGrantedPermissionsCounter
	extends AppWithAdminGrantedPermissionsCounter {
	private NumberOfAppsCallback mCallback;

	CurrentUserAndManagedProfileAppWithAdminGrantedPermissionsCounter(Context context,
	String[] permissions, PackageManager packageManager,
	IPackageManager packageManagerService,
	DevicePolicyManager devicePolicyManager, NumberOfAppsCallback callback) {
	super(context, permissions, packageManager, packageManagerService, devicePolicyManager);
	mCallback = callback;
	}

	@Override
	protected void onCountComplete(int num) {
	mCallback.onNumberOfAppsResult(num);
	}
	}

	private static class CurrentUserPolicyInstalledAppLister extends InstalledAppLister {
	private ListOfAppsCallback mCallback;

	CurrentUserPolicyInstalledAppLister(PackageManager packageManager,
	UserManager userManager, ListOfAppsCallback callback) {
	super(packageManager, userManager);
	mCallback = callback;
	}

	@Override
	protected void onAppListBuilt(List<UserAppInfo> list) {
	mCallback.onListOfAppsResult(list);
	}
	}

	private static class CurrentUserAppWithAdminGrantedPermissionsLister extends
	AppWithAdminGrantedPermissionsLister {
	private ListOfAppsCallback mCallback;

	CurrentUserAppWithAdminGrantedPermissionsLister(String[] permissions,
	PackageManager packageManager, IPackageManager packageManagerService,
	DevicePolicyManager devicePolicyManager, UserManager userManager,
	ListOfAppsCallback callback) {
	super(permissions, packageManager, packageManagerService, devicePolicyManager,
	userManager);
	mCallback = callback;
	}

	@Override
	protected void onAppListBuilt(List<UserAppInfo> list) {
	mCallback.onListOfAppsResult(list);
	}
	}

	/**
	* Return the component info of the EuiccService to bind to, or null if none were found.
	*/
	@VisibleForTesting
	ComponentInfo findEuiccService(PackageManager packageManager) {
	final Intent intent = new Intent(EuiccService.EUICC_SERVICE_INTERFACE);
	final List<ResolveInfo> resolveInfoList =
	packageManager.queryIntentServices(intent, EUICC_QUERY_FLAGS);
	final ComponentInfo bestComponent = findEuiccService(packageManager, resolveInfoList);
	if (bestComponent == null) {
	Log.w(TAG, "No valid EuiccService implementation found");
	}
	return bestComponent;
	}

	private ComponentInfo findEuiccService(
	PackageManager packageManager, List<ResolveInfo> resolveInfoList) {
	int bestPriority = Integer.MIN_VALUE;
	ComponentInfo bestComponent = null;
	if (resolveInfoList != null) {
	for (ResolveInfo resolveInfo : resolveInfoList) {
	if (!isValidEuiccComponent(packageManager, resolveInfo)) {
	continue;
	}

	if (resolveInfo.filter.getPriority() > bestPriority) {
	bestPriority = resolveInfo.filter.getPriority();
	bestComponent = getComponentInfo(resolveInfo);
	}
	}
	}

	return bestComponent;
	}

	private boolean isValidEuiccComponent(
	PackageManager packageManager, ResolveInfo resolveInfo) {
	final ComponentInfo componentInfo = getComponentInfo(resolveInfo);
	final String packageName = componentInfo.packageName;

	// Verify that the app is privileged (via granting of a privileged permission).
	if (packageManager.checkPermission(
	Manifest.permission.WRITE_EMBEDDED_SUBSCRIPTIONS, packageName)
	!= PackageManager.PERMISSION_GRANTED) {
	Log.e(TAG, "Package " + packageName
	+ " does not declare WRITE_EMBEDDED_SUBSCRIPTIONS");
	return false;
	}

	// Verify that only the system can access the component.
	final String permission;
	if (componentInfo instanceof ServiceInfo) {
	permission = ((ServiceInfo) componentInfo).permission;
	} else if (componentInfo instanceof ActivityInfo) {
	permission = ((ActivityInfo) componentInfo).permission;
	} else {
	throw new IllegalArgumentException("Can only verify services/activities");
	}
	if (!TextUtils.equals(permission, Manifest.permission.BIND_EUICC_SERVICE)) {
	Log.e(TAG, "Package " + packageName
	+ " does not require the BIND_EUICC_SERVICE permission");
	return false;
	}

	// Verify that the component declares a priority.
	if (resolveInfo.filter == null \|\| resolveInfo.filter.getPriority() == 0) {
	Log.e(TAG, "Package " + packageName + " does not specify a priority");
	return false;
	}
	return true;
	}

	private ComponentInfo getComponentInfo(ResolveInfo resolveInfo) {
	if (resolveInfo.activityInfo != null) {
	return resolveInfo.activityInfo;
	}
	if (resolveInfo.serviceInfo != null) {
	return resolveInfo.serviceInfo;
	}
	if (resolveInfo.providerInfo != null) {
	return resolveInfo.providerInfo;
	}
	throw new IllegalStateException("Missing ComponentInfo!");
	}
	}