| /* | |
| * Copyright (C) 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.server; | |
| import static com.android.internal.util.ArrayUtils.appendInt; | |
| import android.app.ActivityManager; | |
| import android.content.ComponentName; | |
| import android.content.pm.FeatureInfo; | |
| import android.content.pm.PackageManager; | |
| import android.os.Environment; | |
| import android.os.Process; | |
| import android.os.storage.StorageManager; | |
| import android.text.TextUtils; | |
| import android.util.ArrayMap; | |
| import android.util.ArraySet; | |
| import android.util.Slog; | |
| import android.util.SparseArray; | |
| import android.util.Xml; | |
| import com.android.internal.util.XmlUtils; | |
| import libcore.io.IoUtils; | |
| import org.xmlpull.v1.XmlPullParser; | |
| import org.xmlpull.v1.XmlPullParserException; | |
| import java.io.File; | |
| import java.io.FileNotFoundException; | |
| import java.io.FileReader; | |
| import java.io.IOException; | |
| import java.util.ArrayList; | |
| import java.util.Collections; | |
| import java.util.List; | |
| import java.util.Map; | |
| /** | |
| * Loads global system configuration info. | |
| */ | |
| public class SystemConfig { | |
| static final String TAG = "SystemConfig"; | |
| static SystemConfig sInstance; | |
| // permission flag, determines which types of configuration are allowed to be read | |
| private static final int ALLOW_FEATURES = 0x01; | |
| private static final int ALLOW_LIBS = 0x02; | |
| private static final int ALLOW_PERMISSIONS = 0x04; | |
| private static final int ALLOW_APP_CONFIGS = 0x08; | |
| private static final int ALLOW_PRIVAPP_PERMISSIONS = 0x10; | |
| private static final int ALLOW_OEM_PERMISSIONS = 0x20; | |
| private static final int ALLOW_ALL = ~0; | |
| // Group-ids that are given to all packages as read from etc/permissions/*.xml. | |
| int[] mGlobalGids; | |
| // These are the built-in uid -> permission mappings that were read from the | |
| // system configuration files. | |
| final SparseArray<ArraySet<String>> mSystemPermissions = new SparseArray<>(); | |
| // These are the built-in shared libraries that were read from the | |
| // system configuration files. Keys are the library names; strings are the | |
| // paths to the libraries. | |
| final ArrayMap<String, String> mSharedLibraries = new ArrayMap<>(); | |
| // These are the features this devices supports that were read from the | |
| // system configuration files. | |
| final ArrayMap<String, FeatureInfo> mAvailableFeatures = new ArrayMap<>(); | |
| // These are the features which this device doesn't support; the OEM | |
| // partition uses these to opt-out of features from the system image. | |
| final ArraySet<String> mUnavailableFeatures = new ArraySet<>(); | |
| public static final class PermissionEntry { | |
| public final String name; | |
| public int[] gids; | |
| public boolean perUser; | |
| PermissionEntry(String name, boolean perUser) { | |
| this.name = name; | |
| this.perUser = perUser; | |
| } | |
| } | |
| // These are the permission -> gid mappings that were read from the | |
| // system configuration files. | |
| final ArrayMap<String, PermissionEntry> mPermissions = new ArrayMap<>(); | |
| // These are the packages that are white-listed to be able to run in the | |
| // background while in power save mode (but not whitelisted from device idle modes), | |
| // as read from the configuration files. | |
| final ArraySet<String> mAllowInPowerSaveExceptIdle = new ArraySet<>(); | |
| // These are the packages that are white-listed to be able to run in the | |
| // background while in power save mode, as read from the configuration files. | |
| final ArraySet<String> mAllowInPowerSave = new ArraySet<>(); | |
| // These are the packages that are white-listed to be able to run in the | |
| // background while in data-usage save mode, as read from the configuration files. | |
| final ArraySet<String> mAllowInDataUsageSave = new ArraySet<>(); | |
| // These are the packages that are white-listed to be able to run background location | |
| // without throttling, as read from the configuration files. | |
| final ArraySet<String> mAllowUnthrottledLocation = new ArraySet<>(); | |
| // These are the action strings of broadcasts which are whitelisted to | |
| // be delivered anonymously even to apps which target O+. | |
| final ArraySet<String> mAllowImplicitBroadcasts = new ArraySet<>(); | |
| // These are the package names of apps which should be in the 'always' | |
| // URL-handling state upon factory reset. | |
| final ArraySet<String> mLinkedApps = new ArraySet<>(); | |
| // These are the packages that are whitelisted to be able to run as system user | |
| final ArraySet<String> mSystemUserWhitelistedApps = new ArraySet<>(); | |
| // These are the packages that should not run under system user | |
| final ArraySet<String> mSystemUserBlacklistedApps = new ArraySet<>(); | |
| // These are the components that are enabled by default as VR mode listener services. | |
| final ArraySet<ComponentName> mDefaultVrComponents = new ArraySet<>(); | |
| // These are the permitted backup transport service components | |
| final ArraySet<ComponentName> mBackupTransportWhitelist = new ArraySet<>(); | |
| // These are the packages of carrier-associated apps which should be disabled until used until | |
| // a SIM is inserted which grants carrier privileges to that carrier app. | |
| final ArrayMap<String, List<String>> mDisabledUntilUsedPreinstalledCarrierAssociatedApps = | |
| new ArrayMap<>(); | |
| final ArrayMap<String, ArraySet<String>> mPrivAppPermissions = new ArrayMap<>(); | |
| final ArrayMap<String, ArraySet<String>> mPrivAppDenyPermissions = new ArrayMap<>(); | |
| final ArrayMap<String, ArrayMap<String, Boolean>> mOemPermissions = new ArrayMap<>(); | |
| public static SystemConfig getInstance() { | |
| synchronized (SystemConfig.class) { | |
| if (sInstance == null) { | |
| sInstance = new SystemConfig(); | |
| } | |
| return sInstance; | |
| } | |
| } | |
| public int[] getGlobalGids() { | |
| return mGlobalGids; | |
| } | |
| public SparseArray<ArraySet<String>> getSystemPermissions() { | |
| return mSystemPermissions; | |
| } | |
| public ArrayMap<String, String> getSharedLibraries() { | |
| return mSharedLibraries; | |
| } | |
| public ArrayMap<String, FeatureInfo> getAvailableFeatures() { | |
| return mAvailableFeatures; | |
| } | |
| public ArrayMap<String, PermissionEntry> getPermissions() { | |
| return mPermissions; | |
| } | |
| public ArraySet<String> getAllowImplicitBroadcasts() { | |
| return mAllowImplicitBroadcasts; | |
| } | |
| public ArraySet<String> getAllowInPowerSaveExceptIdle() { | |
| return mAllowInPowerSaveExceptIdle; | |
| } | |
| public ArraySet<String> getAllowInPowerSave() { | |
| return mAllowInPowerSave; | |
| } | |
| public ArraySet<String> getAllowInDataUsageSave() { | |
| return mAllowInDataUsageSave; | |
| } | |
| public ArraySet<String> getAllowUnthrottledLocation() { | |
| return mAllowUnthrottledLocation; | |
| } | |
| public ArraySet<String> getLinkedApps() { | |
| return mLinkedApps; | |
| } | |
| public ArraySet<String> getSystemUserWhitelistedApps() { | |
| return mSystemUserWhitelistedApps; | |
| } | |
| public ArraySet<String> getSystemUserBlacklistedApps() { | |
| return mSystemUserBlacklistedApps; | |
| } | |
| public ArraySet<ComponentName> getDefaultVrComponents() { | |
| return mDefaultVrComponents; | |
| } | |
| public ArraySet<ComponentName> getBackupTransportWhitelist() { | |
| return mBackupTransportWhitelist; | |
| } | |
| public ArrayMap<String, List<String>> getDisabledUntilUsedPreinstalledCarrierAssociatedApps() { | |
| return mDisabledUntilUsedPreinstalledCarrierAssociatedApps; | |
| } | |
| public ArraySet<String> getPrivAppPermissions(String packageName) { | |
| return mPrivAppPermissions.get(packageName); | |
| } | |
| public ArraySet<String> getPrivAppDenyPermissions(String packageName) { | |
| return mPrivAppDenyPermissions.get(packageName); | |
| } | |
| public Map<String, Boolean> getOemPermissions(String packageName) { | |
| final Map<String, Boolean> oemPermissions = mOemPermissions.get(packageName); | |
| if (oemPermissions != null) { | |
| return oemPermissions; | |
| } | |
| return Collections.emptyMap(); | |
| } | |
| SystemConfig() { | |
| // Read configuration from system | |
| readPermissions(Environment.buildPath( | |
| Environment.getRootDirectory(), "etc", "sysconfig"), ALLOW_ALL); | |
| // Read configuration from the old permissions dir | |
| readPermissions(Environment.buildPath( | |
| Environment.getRootDirectory(), "etc", "permissions"), ALLOW_ALL); | |
| // Allow Vendor to customize system configs around libs, features, permissions and apps | |
| int vendorPermissionFlag = ALLOW_LIBS | ALLOW_FEATURES | ALLOW_PERMISSIONS | | |
| ALLOW_APP_CONFIGS; | |
| readPermissions(Environment.buildPath( | |
| Environment.getVendorDirectory(), "etc", "sysconfig"), vendorPermissionFlag); | |
| readPermissions(Environment.buildPath( | |
| Environment.getVendorDirectory(), "etc", "permissions"), vendorPermissionFlag); | |
| // Allow ODM to customize system configs around libs, features and apps | |
| int odmPermissionFlag = ALLOW_LIBS | ALLOW_FEATURES | ALLOW_APP_CONFIGS; | |
| readPermissions(Environment.buildPath( | |
| Environment.getOdmDirectory(), "etc", "sysconfig"), odmPermissionFlag); | |
| readPermissions(Environment.buildPath( | |
| Environment.getOdmDirectory(), "etc", "permissions"), odmPermissionFlag); | |
| // Allow OEM to customize features and OEM permissions | |
| int oemPermissionFlag = ALLOW_FEATURES | ALLOW_OEM_PERMISSIONS; | |
| readPermissions(Environment.buildPath( | |
| Environment.getOemDirectory(), "etc", "sysconfig"), oemPermissionFlag); | |
| readPermissions(Environment.buildPath( | |
| Environment.getOemDirectory(), "etc", "permissions"), oemPermissionFlag); | |
| } | |
| void readPermissions(File libraryDir, int permissionFlag) { | |
| // Read permissions from given directory. | |
| if (!libraryDir.exists() || !libraryDir.isDirectory()) { | |
| if (permissionFlag == ALLOW_ALL) { | |
| Slog.w(TAG, "No directory " + libraryDir + ", skipping"); | |
| } | |
| return; | |
| } | |
| if (!libraryDir.canRead()) { | |
| Slog.w(TAG, "Directory " + libraryDir + " cannot be read"); | |
| return; | |
| } | |
| // Iterate over the files in the directory and scan .xml files | |
| File platformFile = null; | |
| for (File f : libraryDir.listFiles()) { | |
| // We'll read platform.xml last | |
| if (f.getPath().endsWith("etc/permissions/platform.xml")) { | |
| platformFile = f; | |
| continue; | |
| } | |
| if (!f.getPath().endsWith(".xml")) { | |
| Slog.i(TAG, "Non-xml file " + f + " in " + libraryDir + " directory, ignoring"); | |
| continue; | |
| } | |
| if (!f.canRead()) { | |
| Slog.w(TAG, "Permissions library file " + f + " cannot be read"); | |
| continue; | |
| } | |
| readPermissionsFromXml(f, permissionFlag); | |
| } | |
| // Read platform permissions last so it will take precedence | |
| if (platformFile != null) { | |
| readPermissionsFromXml(platformFile, permissionFlag); | |
| } | |
| } | |
| private void readPermissionsFromXml(File permFile, int permissionFlag) { | |
| FileReader permReader = null; | |
| try { | |
| permReader = new FileReader(permFile); | |
| } catch (FileNotFoundException e) { | |
| Slog.w(TAG, "Couldn't find or open permissions file " + permFile); | |
| return; | |
| } | |
| final boolean lowRam = ActivityManager.isLowRamDeviceStatic(); | |
| try { | |
| XmlPullParser parser = Xml.newPullParser(); | |
| parser.setInput(permReader); | |
| int type; | |
| while ((type=parser.next()) != parser.START_TAG | |
| && type != parser.END_DOCUMENT) { | |
| ; | |
| } | |
| if (type != parser.START_TAG) { | |
| throw new XmlPullParserException("No start tag found"); | |
| } | |
| if (!parser.getName().equals("permissions") && !parser.getName().equals("config")) { | |
| throw new XmlPullParserException("Unexpected start tag in " + permFile | |
| + ": found " + parser.getName() + ", expected 'permissions' or 'config'"); | |
| } | |
| boolean allowAll = permissionFlag == ALLOW_ALL; | |
| boolean allowLibs = (permissionFlag & ALLOW_LIBS) != 0; | |
| boolean allowFeatures = (permissionFlag & ALLOW_FEATURES) != 0; | |
| boolean allowPermissions = (permissionFlag & ALLOW_PERMISSIONS) != 0; | |
| boolean allowAppConfigs = (permissionFlag & ALLOW_APP_CONFIGS) != 0; | |
| boolean allowPrivappPermissions = (permissionFlag & ALLOW_PRIVAPP_PERMISSIONS) != 0; | |
| boolean allowOemPermissions = (permissionFlag & ALLOW_OEM_PERMISSIONS) != 0; | |
| while (true) { | |
| XmlUtils.nextElement(parser); | |
| if (parser.getEventType() == XmlPullParser.END_DOCUMENT) { | |
| break; | |
| } | |
| String name = parser.getName(); | |
| if ("group".equals(name) && allowAll) { | |
| String gidStr = parser.getAttributeValue(null, "gid"); | |
| if (gidStr != null) { | |
| int gid = android.os.Process.getGidForName(gidStr); | |
| mGlobalGids = appendInt(mGlobalGids, gid); | |
| } else { | |
| Slog.w(TAG, "<group> without gid in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } else if ("permission".equals(name) && allowPermissions) { | |
| String perm = parser.getAttributeValue(null, "name"); | |
| if (perm == null) { | |
| Slog.w(TAG, "<permission> without name in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } | |
| perm = perm.intern(); | |
| readPermission(parser, perm); | |
| } else if ("assign-permission".equals(name) && allowPermissions) { | |
| String perm = parser.getAttributeValue(null, "name"); | |
| if (perm == null) { | |
| Slog.w(TAG, "<assign-permission> without name in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } | |
| String uidStr = parser.getAttributeValue(null, "uid"); | |
| if (uidStr == null) { | |
| Slog.w(TAG, "<assign-permission> without uid in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } | |
| int uid = Process.getUidForName(uidStr); | |
| if (uid < 0) { | |
| Slog.w(TAG, "<assign-permission> with unknown uid \"" | |
| + uidStr + " in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } | |
| perm = perm.intern(); | |
| ArraySet<String> perms = mSystemPermissions.get(uid); | |
| if (perms == null) { | |
| perms = new ArraySet<String>(); | |
| mSystemPermissions.put(uid, perms); | |
| } | |
| perms.add(perm); | |
| XmlUtils.skipCurrentTag(parser); | |
| } else if ("library".equals(name) && allowLibs) { | |
| String lname = parser.getAttributeValue(null, "name"); | |
| String lfile = parser.getAttributeValue(null, "file"); | |
| if (lname == null) { | |
| Slog.w(TAG, "<library> without name in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| } else if (lfile == null) { | |
| Slog.w(TAG, "<library> without file in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| } else { | |
| //Log.i(TAG, "Got library " + lname + " in " + lfile); | |
| mSharedLibraries.put(lname, lfile); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } else if ("feature".equals(name) && allowFeatures) { | |
| String fname = parser.getAttributeValue(null, "name"); | |
| int fversion = XmlUtils.readIntAttribute(parser, "version", 0); | |
| boolean allowed; | |
| if (!lowRam) { | |
| allowed = true; | |
| } else { | |
| String notLowRam = parser.getAttributeValue(null, "notLowRam"); | |
| allowed = !"true".equals(notLowRam); | |
| } | |
| if (fname == null) { | |
| Slog.w(TAG, "<feature> without name in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| } else if (allowed) { | |
| addFeature(fname, fversion); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } else if ("unavailable-feature".equals(name) && allowFeatures) { | |
| String fname = parser.getAttributeValue(null, "name"); | |
| if (fname == null) { | |
| Slog.w(TAG, "<unavailable-feature> without name in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| } else { | |
| mUnavailableFeatures.add(fname); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } else if ("allow-in-power-save-except-idle".equals(name) && allowAll) { | |
| String pkgname = parser.getAttributeValue(null, "package"); | |
| if (pkgname == null) { | |
| Slog.w(TAG, "<allow-in-power-save-except-idle> without package in " | |
| + permFile + " at " + parser.getPositionDescription()); | |
| } else { | |
| mAllowInPowerSaveExceptIdle.add(pkgname); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } else if ("allow-in-power-save".equals(name) && allowAll) { | |
| String pkgname = parser.getAttributeValue(null, "package"); | |
| if (pkgname == null) { | |
| Slog.w(TAG, "<allow-in-power-save> without package in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| } else { | |
| mAllowInPowerSave.add(pkgname); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } else if ("allow-in-data-usage-save".equals(name) && allowAll) { | |
| String pkgname = parser.getAttributeValue(null, "package"); | |
| if (pkgname == null) { | |
| Slog.w(TAG, "<allow-in-data-usage-save> without package in " + permFile | |
| + " at " + parser.getPositionDescription()); | |
| } else { | |
| mAllowInDataUsageSave.add(pkgname); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } else if ("allow-unthrottled-location".equals(name) && allowAll) { | |
| String pkgname = parser.getAttributeValue(null, "package"); | |
| if (pkgname == null) { | |
| Slog.w(TAG, "<allow-unthrottled-location> without package in " | |
| + permFile + " at " + parser.getPositionDescription()); | |
| } else { | |
| mAllowUnthrottledLocation.add(pkgname); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } else if ("allow-implicit-broadcast".equals(name) && allowAll) { | |
| String action = parser.getAttributeValue(null, "action"); | |
| if (action == null) { | |
| Slog.w(TAG, "<allow-implicit-broadcast> without action in " + permFile | |
| + " at " + parser.getPositionDescription()); | |
| } else { | |
| mAllowImplicitBroadcasts.add(action); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } else if ("app-link".equals(name) && allowAppConfigs) { | |
| String pkgname = parser.getAttributeValue(null, "package"); | |
| if (pkgname == null) { | |
| Slog.w(TAG, "<app-link> without package in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| } else { | |
| mLinkedApps.add(pkgname); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| } else if ("system-user-whitelisted-app".equals(name) && allowAppConfigs) { | |
| String pkgname = parser.getAttributeValue(null, "package"); | |
| if (pkgname == null) { | |
| Slog.w(TAG, "<system-user-whitelisted-app> without package in " + permFile | |
| + " at " + parser.getPositionDescription()); | |
| } else { | |
| mSystemUserWhitelistedApps.add(pkgname); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| } else if ("system-user-blacklisted-app".equals(name) && allowAppConfigs) { | |
| String pkgname = parser.getAttributeValue(null, "package"); | |
| if (pkgname == null) { | |
| Slog.w(TAG, "<system-user-blacklisted-app without package in " + permFile | |
| + " at " + parser.getPositionDescription()); | |
| } else { | |
| mSystemUserBlacklistedApps.add(pkgname); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| } else if ("default-enabled-vr-app".equals(name) && allowAppConfigs) { | |
| String pkgname = parser.getAttributeValue(null, "package"); | |
| String clsname = parser.getAttributeValue(null, "class"); | |
| if (pkgname == null) { | |
| Slog.w(TAG, "<default-enabled-vr-app without package in " + permFile | |
| + " at " + parser.getPositionDescription()); | |
| } else if (clsname == null) { | |
| Slog.w(TAG, "<default-enabled-vr-app without class in " + permFile | |
| + " at " + parser.getPositionDescription()); | |
| } else { | |
| mDefaultVrComponents.add(new ComponentName(pkgname, clsname)); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| } else if ("backup-transport-whitelisted-service".equals(name) && allowFeatures) { | |
| String serviceName = parser.getAttributeValue(null, "service"); | |
| if (serviceName == null) { | |
| Slog.w(TAG, "<backup-transport-whitelisted-service> without service in " | |
| + permFile + " at " + parser.getPositionDescription()); | |
| } else { | |
| ComponentName cn = ComponentName.unflattenFromString(serviceName); | |
| if (cn == null) { | |
| Slog.w(TAG, | |
| "<backup-transport-whitelisted-service> with invalid service name " | |
| + serviceName + " in "+ permFile | |
| + " at " + parser.getPositionDescription()); | |
| } else { | |
| mBackupTransportWhitelist.add(cn); | |
| } | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| } else if ("disabled-until-used-preinstalled-carrier-associated-app".equals(name) | |
| && allowAppConfigs) { | |
| String pkgname = parser.getAttributeValue(null, "package"); | |
| String carrierPkgname = parser.getAttributeValue(null, "carrierAppPackage"); | |
| if (pkgname == null || carrierPkgname == null) { | |
| Slog.w(TAG, "<disabled-until-used-preinstalled-carrier-associated-app" | |
| + " without package or carrierAppPackage in " + permFile + " at " | |
| + parser.getPositionDescription()); | |
| } else { | |
| List<String> associatedPkgs = | |
| mDisabledUntilUsedPreinstalledCarrierAssociatedApps.get( | |
| carrierPkgname); | |
| if (associatedPkgs == null) { | |
| associatedPkgs = new ArrayList<>(); | |
| mDisabledUntilUsedPreinstalledCarrierAssociatedApps.put( | |
| carrierPkgname, associatedPkgs); | |
| } | |
| associatedPkgs.add(pkgname); | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| } else if ("privapp-permissions".equals(name) && allowPrivappPermissions) { | |
| readPrivAppPermissions(parser); | |
| } else if ("oem-permissions".equals(name) && allowOemPermissions) { | |
| readOemPermissions(parser); | |
| } else { | |
| XmlUtils.skipCurrentTag(parser); | |
| continue; | |
| } | |
| } | |
| } catch (XmlPullParserException e) { | |
| Slog.w(TAG, "Got exception parsing permissions.", e); | |
| } catch (IOException e) { | |
| Slog.w(TAG, "Got exception parsing permissions.", e); | |
| } finally { | |
| IoUtils.closeQuietly(permReader); | |
| } | |
| // Some devices can be field-converted to FBE, so offer to splice in | |
| // those features if not already defined by the static config | |
| if (StorageManager.isFileEncryptedNativeOnly()) { | |
| addFeature(PackageManager.FEATURE_FILE_BASED_ENCRYPTION, 0); | |
| addFeature(PackageManager.FEATURE_SECURELY_REMOVES_USERS, 0); | |
| } | |
| if (ActivityManager.isLowRamDeviceStatic()) { | |
| addFeature(PackageManager.FEATURE_RAM_LOW, 0); | |
| } else { | |
| addFeature(PackageManager.FEATURE_RAM_NORMAL, 0); | |
| } | |
| for (String featureName : mUnavailableFeatures) { | |
| removeFeature(featureName); | |
| } | |
| } | |
| private void addFeature(String name, int version) { | |
| FeatureInfo fi = mAvailableFeatures.get(name); | |
| if (fi == null) { | |
| fi = new FeatureInfo(); | |
| fi.name = name; | |
| fi.version = version; | |
| mAvailableFeatures.put(name, fi); | |
| } else { | |
| fi.version = Math.max(fi.version, version); | |
| } | |
| } | |
| private void removeFeature(String name) { | |
| if (mAvailableFeatures.remove(name) != null) { | |
| Slog.d(TAG, "Removed unavailable feature " + name); | |
| } | |
| } | |
| void readPermission(XmlPullParser parser, String name) | |
| throws IOException, XmlPullParserException { | |
| if (mPermissions.containsKey(name)) { | |
| throw new IllegalStateException("Duplicate permission definition for " + name); | |
| } | |
| final boolean perUser = XmlUtils.readBooleanAttribute(parser, "perUser", false); | |
| final PermissionEntry perm = new PermissionEntry(name, perUser); | |
| mPermissions.put(name, perm); | |
| int outerDepth = parser.getDepth(); | |
| int type; | |
| while ((type=parser.next()) != XmlPullParser.END_DOCUMENT | |
| && (type != XmlPullParser.END_TAG | |
| || parser.getDepth() > outerDepth)) { | |
| if (type == XmlPullParser.END_TAG | |
| || type == XmlPullParser.TEXT) { | |
| continue; | |
| } | |
| String tagName = parser.getName(); | |
| if ("group".equals(tagName)) { | |
| String gidStr = parser.getAttributeValue(null, "gid"); | |
| if (gidStr != null) { | |
| int gid = Process.getGidForName(gidStr); | |
| perm.gids = appendInt(perm.gids, gid); | |
| } else { | |
| Slog.w(TAG, "<group> without gid at " | |
| + parser.getPositionDescription()); | |
| } | |
| } | |
| XmlUtils.skipCurrentTag(parser); | |
| } | |
| } | |
| void readPrivAppPermissions(XmlPullParser parser) throws IOException, XmlPullParserException { | |
| String packageName = parser.getAttributeValue(null, "package"); | |
| if (TextUtils.isEmpty(packageName)) { | |
| Slog.w(TAG, "package is required for <privapp-permissions> in " | |
| + parser.getPositionDescription()); | |
| return; | |
| } | |
| ArraySet<String> permissions = mPrivAppPermissions.get(packageName); | |
| if (permissions == null) { | |
| permissions = new ArraySet<>(); | |
| } | |
| ArraySet<String> denyPermissions = mPrivAppDenyPermissions.get(packageName); | |
| int depth = parser.getDepth(); | |
| while (XmlUtils.nextElementWithin(parser, depth)) { | |
| String name = parser.getName(); | |
| if ("permission".equals(name)) { | |
| String permName = parser.getAttributeValue(null, "name"); | |
| if (TextUtils.isEmpty(permName)) { | |
| Slog.w(TAG, "name is required for <permission> in " | |
| + parser.getPositionDescription()); | |
| continue; | |
| } | |
| permissions.add(permName); | |
| } else if ("deny-permission".equals(name)) { | |
| String permName = parser.getAttributeValue(null, "name"); | |
| if (TextUtils.isEmpty(permName)) { | |
| Slog.w(TAG, "name is required for <deny-permission> in " | |
| + parser.getPositionDescription()); | |
| continue; | |
| } | |
| if (denyPermissions == null) { | |
| denyPermissions = new ArraySet<>(); | |
| } | |
| denyPermissions.add(permName); | |
| } | |
| } | |
| mPrivAppPermissions.put(packageName, permissions); | |
| if (denyPermissions != null) { | |
| mPrivAppDenyPermissions.put(packageName, denyPermissions); | |
| } | |
| } | |
| void readOemPermissions(XmlPullParser parser) throws IOException, XmlPullParserException { | |
| final String packageName = parser.getAttributeValue(null, "package"); | |
| if (TextUtils.isEmpty(packageName)) { | |
| Slog.w(TAG, "package is required for <oem-permissions> in " | |
| + parser.getPositionDescription()); | |
| return; | |
| } | |
| ArrayMap<String, Boolean> permissions = mOemPermissions.get(packageName); | |
| if (permissions == null) { | |
| permissions = new ArrayMap<>(); | |
| } | |
| final int depth = parser.getDepth(); | |
| while (XmlUtils.nextElementWithin(parser, depth)) { | |
| final String name = parser.getName(); | |
| if ("permission".equals(name)) { | |
| final String permName = parser.getAttributeValue(null, "name"); | |
| if (TextUtils.isEmpty(permName)) { | |
| Slog.w(TAG, "name is required for <permission> in " | |
| + parser.getPositionDescription()); | |
| continue; | |
| } | |
| permissions.put(permName, Boolean.TRUE); | |
| } else if ("deny-permission".equals(name)) { | |
| String permName = parser.getAttributeValue(null, "name"); | |
| if (TextUtils.isEmpty(permName)) { | |
| Slog.w(TAG, "name is required for <deny-permission> in " | |
| + parser.getPositionDescription()); | |
| continue; | |
| } | |
| permissions.put(permName, Boolean.FALSE); | |
| } | |
| } | |
| mOemPermissions.put(packageName, permissions); | |
| } | |
| } |