| /** |
| * Copyright (c) 2015, 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.phone; |
| |
| import static android.Manifest.permission.READ_PHONE_STATE; |
| import static android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE; |
| |
| import android.annotation.NonNull; |
| import android.app.ActivityManagerNative; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.ServiceConnection; |
| import android.content.SharedPreferences; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.database.sqlite.SQLiteOpenHelper; |
| import android.os.AsyncResult; |
| import android.os.Binder; |
| import android.os.Build; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Message; |
| import android.os.PersistableBundle; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.UserHandle; |
| import android.preference.PreferenceManager; |
| import android.service.carrier.CarrierIdentifier; |
| import android.service.carrier.CarrierService; |
| import android.service.carrier.ICarrierService; |
| import android.telephony.CarrierConfigManager; |
| import android.telephony.SubscriptionManager; |
| import android.telephony.TelephonyManager; |
| import android.util.Log; |
| |
| import com.android.internal.telephony.ICarrierConfigLoader; |
| import com.android.internal.telephony.IccCardConstants; |
| import com.android.internal.telephony.Phone; |
| import com.android.internal.telephony.PhoneConstants; |
| import com.android.internal.telephony.PhoneFactory; |
| import com.android.internal.telephony.TelephonyIntents; |
| import com.android.internal.util.FastXmlSerializer; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlPullParserFactory; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.FilenameFilter; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.List; |
| |
| /** |
| * CarrierConfigLoader binds to privileged carrier apps to fetch carrier config overlays. |
| */ |
| |
| public class CarrierConfigLoader extends ICarrierConfigLoader.Stub { |
| private static final String LOG_TAG = "CarrierConfigLoader"; |
| // Package name for default carrier config app, bundled with system image. |
| private static final String DEFAULT_CARRIER_CONFIG_PACKAGE = "com.android.carrierconfig"; |
| |
| /** The singleton instance. */ |
| private static CarrierConfigLoader sInstance; |
| // The context for phone app, passed from PhoneGlobals. |
| private Context mContext; |
| // Carrier configs from default app, indexed by phoneID. |
| private PersistableBundle[] mConfigFromDefaultApp; |
| // Carrier configs from privileged carrier config app, indexed by phoneID. |
| private PersistableBundle[] mConfigFromCarrierApp; |
| // Service connection for binding to config app. |
| private CarrierServiceConnection[] mServiceConnection; |
| |
| // Broadcast receiver for Boot intents, register intent filter in construtor. |
| private final BroadcastReceiver mBootReceiver = new ConfigLoaderBroadcastReceiver(); |
| // Broadcast receiver for SIM and pkg intents, register intent filter in constructor. |
| private final BroadcastReceiver mPackageReceiver = new ConfigLoaderBroadcastReceiver(); |
| |
| // Message codes; see mHandler below. |
| // Request from SubscriptionInfoUpdater when SIM becomes absent or error. |
| private static final int EVENT_CLEAR_CONFIG = 0; |
| // Has connected to default app. |
| private static final int EVENT_CONNECTED_TO_DEFAULT = 3; |
| // Has connected to carrier app. |
| private static final int EVENT_CONNECTED_TO_CARRIER = 4; |
| // Config has been loaded from default app. |
| private static final int EVENT_LOADED_FROM_DEFAULT = 5; |
| // Config has been loaded from carrier app. |
| private static final int EVENT_LOADED_FROM_CARRIER = 6; |
| // Attempt to fetch from default app or read from XML. |
| private static final int EVENT_FETCH_DEFAULT = 7; |
| // Attempt to fetch from carrier app or read from XML. |
| private static final int EVENT_FETCH_CARRIER = 8; |
| // A package has been installed, uninstalled, or updated. |
| private static final int EVENT_PACKAGE_CHANGED = 9; |
| // Bind timed out for the default app. |
| private static final int EVENT_BIND_DEFAULT_TIMEOUT = 10; |
| // Bind timed out for a carrier app. |
| private static final int EVENT_BIND_CARRIER_TIMEOUT = 11; |
| // Check if the system fingerprint has changed. |
| private static final int EVENT_CHECK_SYSTEM_UPDATE = 12; |
| // Rerun carrier config binding after system is unlocked. |
| private static final int EVENT_SYSTEM_UNLOCKED = 13; |
| |
| private static final int BIND_TIMEOUT_MILLIS = 30000; |
| |
| // Tags used for saving and restoring XML documents. |
| private static final String TAG_DOCUMENT = "carrier_config"; |
| private static final String TAG_VERSION = "package_version"; |
| private static final String TAG_BUNDLE = "bundle_data"; |
| |
| // SharedPreferences key for last known build fingerprint. |
| private static final String KEY_FINGERPRINT = "build_fingerprint"; |
| |
| // Handler to process various events. |
| // |
| // For each phoneId, the event sequence should be: |
| // fetch default, connected to default, loaded from default, |
| // fetch carrier, connected to carrier, loaded from carrier. |
| // |
| // If there is a saved config file for either the default app or the carrier app, we skip |
| // binding to the app and go straight from fetch to loaded. |
| // |
| // At any time, at most one connection is active. If events are not in this order, previous |
| // connection will be unbound, so only latest event takes effect. |
| // |
| // We broadcast ACTION_CARRIER_CONFIG_CHANGED after: |
| // 1. loading from carrier app (even if read from a file) |
| // 2. loading from default app if there is no carrier app (even if read from a file) |
| // 3. clearing config (e.g. due to sim removal) |
| // 4. encountering bind or IPC error |
| private Handler mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| int phoneId = msg.arg1; |
| log("mHandler: " + msg.what + " phoneId: " + phoneId); |
| String iccid; |
| CarrierIdentifier carrierId; |
| String carrierPackageName; |
| CarrierServiceConnection conn; |
| PersistableBundle config; |
| switch (msg.what) { |
| case EVENT_CLEAR_CONFIG: |
| if (mConfigFromDefaultApp[phoneId] == null && |
| mConfigFromCarrierApp[phoneId] == null) |
| break; |
| mConfigFromDefaultApp[phoneId] = null; |
| mConfigFromCarrierApp[phoneId] = null; |
| mServiceConnection[phoneId] = null; |
| broadcastConfigChangedIntent(phoneId); |
| break; |
| |
| case EVENT_SYSTEM_UNLOCKED: |
| for (int i = 0; i < TelephonyManager.from(mContext).getPhoneCount(); ++i) { |
| updateConfigForPhoneId(i); |
| } |
| break; |
| |
| case EVENT_PACKAGE_CHANGED: |
| carrierPackageName = (String) msg.obj; |
| // Only update if there are cached config removed to avoid updating config |
| // for unrelated packages. |
| if (clearCachedConfigForPackage(carrierPackageName)) { |
| int numPhones = TelephonyManager.from(mContext).getPhoneCount(); |
| for (int i = 0; i < numPhones; ++i) { |
| updateConfigForPhoneId(i); |
| } |
| } |
| break; |
| |
| case EVENT_FETCH_DEFAULT: |
| iccid = getIccIdForPhoneId(phoneId); |
| config = restoreConfigFromXml(DEFAULT_CARRIER_CONFIG_PACKAGE, iccid); |
| if (config != null) { |
| log("Loaded config from XML. package=" + DEFAULT_CARRIER_CONFIG_PACKAGE |
| + " phoneId=" + phoneId); |
| mConfigFromDefaultApp[phoneId] = config; |
| Message newMsg = obtainMessage(EVENT_LOADED_FROM_DEFAULT, phoneId, -1); |
| newMsg.getData().putBoolean("loaded_from_xml", true); |
| mHandler.sendMessage(newMsg); |
| } else { |
| if (bindToConfigPackage(DEFAULT_CARRIER_CONFIG_PACKAGE, |
| phoneId, EVENT_CONNECTED_TO_DEFAULT)) { |
| sendMessageDelayed(obtainMessage(EVENT_BIND_DEFAULT_TIMEOUT, phoneId, -1), |
| BIND_TIMEOUT_MILLIS); |
| } else { |
| // Send bcast if bind fails |
| broadcastConfigChangedIntent(phoneId); |
| } |
| } |
| break; |
| |
| case EVENT_CONNECTED_TO_DEFAULT: |
| removeMessages(EVENT_BIND_DEFAULT_TIMEOUT); |
| carrierId = getCarrierIdForPhoneId(phoneId); |
| conn = (CarrierServiceConnection) msg.obj; |
| // If new service connection has been created, unbind. |
| if (mServiceConnection[phoneId] != conn || conn.service == null) { |
| mContext.unbindService(conn); |
| break; |
| } |
| try { |
| ICarrierService carrierService = ICarrierService.Stub |
| .asInterface(conn.service); |
| config = carrierService.getCarrierConfig(carrierId); |
| iccid = getIccIdForPhoneId(phoneId); |
| saveConfigToXml(DEFAULT_CARRIER_CONFIG_PACKAGE, iccid, config); |
| mConfigFromDefaultApp[phoneId] = config; |
| sendMessage(obtainMessage(EVENT_LOADED_FROM_DEFAULT, phoneId, -1)); |
| } catch (Exception ex) { |
| // The bound app could throw exceptions that binder will pass to us. |
| loge("Failed to get carrier config: " + ex.toString()); |
| } finally { |
| mContext.unbindService(mServiceConnection[phoneId]); |
| } |
| break; |
| |
| case EVENT_BIND_DEFAULT_TIMEOUT: |
| mContext.unbindService(mServiceConnection[phoneId]); |
| broadcastConfigChangedIntent(phoneId); |
| break; |
| |
| case EVENT_LOADED_FROM_DEFAULT: |
| // If we attempted to bind to the app, but the service connection is null, then |
| // config was cleared while we were waiting and we should not continue. |
| if (!msg.getData().getBoolean("loaded_from_xml", false) |
| && mServiceConnection[phoneId] == null) { |
| break; |
| } |
| carrierPackageName = getCarrierPackageForPhoneId(phoneId); |
| if (carrierPackageName != null) { |
| log("Found carrier config app: " + carrierPackageName); |
| sendMessage(obtainMessage(EVENT_FETCH_CARRIER, phoneId)); |
| } else { |
| broadcastConfigChangedIntent(phoneId); |
| } |
| break; |
| |
| case EVENT_FETCH_CARRIER: |
| carrierPackageName = getCarrierPackageForPhoneId(phoneId); |
| iccid = getIccIdForPhoneId(phoneId); |
| config = restoreConfigFromXml(carrierPackageName, iccid); |
| if (config != null) { |
| log("Loaded config from XML. package=" + carrierPackageName + " phoneId=" |
| + phoneId); |
| mConfigFromCarrierApp[phoneId] = config; |
| Message newMsg = obtainMessage(EVENT_LOADED_FROM_CARRIER, phoneId, -1); |
| newMsg.getData().putBoolean("loaded_from_xml", true); |
| sendMessage(newMsg); |
| } else { |
| if (carrierPackageName != null |
| && bindToConfigPackage(carrierPackageName, phoneId, |
| EVENT_CONNECTED_TO_CARRIER)) { |
| sendMessageDelayed(obtainMessage(EVENT_BIND_CARRIER_TIMEOUT, phoneId, -1), |
| BIND_TIMEOUT_MILLIS); |
| } else { |
| // Send bcast if bind fails |
| broadcastConfigChangedIntent(phoneId); |
| } |
| } |
| break; |
| |
| case EVENT_CONNECTED_TO_CARRIER: |
| removeMessages(EVENT_BIND_CARRIER_TIMEOUT); |
| carrierId = getCarrierIdForPhoneId(phoneId); |
| conn = (CarrierServiceConnection) msg.obj; |
| // If new service connection has been created, unbind. |
| if (mServiceConnection[phoneId] != conn || |
| conn.service == null) { |
| mContext.unbindService(conn); |
| break; |
| } |
| try { |
| ICarrierService carrierService = ICarrierService.Stub |
| .asInterface(conn.service); |
| config = carrierService.getCarrierConfig(carrierId); |
| carrierPackageName = getCarrierPackageForPhoneId(phoneId); |
| iccid = getIccIdForPhoneId(phoneId); |
| saveConfigToXml(carrierPackageName, iccid, config); |
| mConfigFromCarrierApp[phoneId] = config; |
| sendMessage(obtainMessage(EVENT_LOADED_FROM_CARRIER, phoneId, -1)); |
| } catch (Exception ex) { |
| // The bound app could throw exceptions that binder will pass to us. |
| loge("Failed to get carrier config: " + ex.toString()); |
| } finally { |
| mContext.unbindService(mServiceConnection[phoneId]); |
| } |
| break; |
| |
| case EVENT_BIND_CARRIER_TIMEOUT: |
| mContext.unbindService(mServiceConnection[phoneId]); |
| broadcastConfigChangedIntent(phoneId); |
| break; |
| |
| case EVENT_LOADED_FROM_CARRIER: |
| // If we attempted to bind to the app, but the service connection is null, then |
| // config was cleared while we were waiting and we should not continue. |
| if (!msg.getData().getBoolean("loaded_from_xml", false) |
| && mServiceConnection[phoneId] == null) { |
| break; |
| } |
| broadcastConfigChangedIntent(phoneId); |
| break; |
| |
| case EVENT_CHECK_SYSTEM_UPDATE: |
| SharedPreferences sharedPrefs = |
| PreferenceManager.getDefaultSharedPreferences(mContext); |
| final String lastFingerprint = sharedPrefs.getString(KEY_FINGERPRINT, null); |
| if (!Build.FINGERPRINT.equals(lastFingerprint)) { |
| log("Build fingerprint changed. old: " |
| + lastFingerprint + " new: " + Build.FINGERPRINT); |
| clearCachedConfigForPackage(null); |
| sharedPrefs.edit().putString(KEY_FINGERPRINT, Build.FINGERPRINT).apply(); |
| } |
| break; |
| } |
| } |
| }; |
| |
| /** |
| * Constructs a CarrierConfigLoader, registers it as a service, and registers a broadcast |
| * receiver for relevant events. |
| */ |
| private CarrierConfigLoader(Context context) { |
| mContext = context; |
| |
| IntentFilter bootFilter = new IntentFilter(); |
| bootFilter.addAction(Intent.ACTION_BOOT_COMPLETED); |
| context.registerReceiver(mBootReceiver, bootFilter); |
| |
| // Register for package updates. Update app or uninstall app update will have all 3 intents, |
| // in the order or removed, added, replaced, all with extra_replace set to true. |
| IntentFilter pkgFilter = new IntentFilter(); |
| pkgFilter.addAction(Intent.ACTION_PACKAGE_ADDED); |
| pkgFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); |
| pkgFilter.addAction(Intent.ACTION_PACKAGE_REPLACED); |
| pkgFilter.addDataScheme("package"); |
| context.registerReceiverAsUser(mPackageReceiver, UserHandle.ALL, pkgFilter, null, null); |
| |
| int numPhones = TelephonyManager.from(context).getPhoneCount(); |
| mConfigFromDefaultApp = new PersistableBundle[numPhones]; |
| mConfigFromCarrierApp = new PersistableBundle[numPhones]; |
| mServiceConnection = new CarrierServiceConnection[numPhones]; |
| // Make this service available through ServiceManager. |
| ServiceManager.addService(Context.CARRIER_CONFIG_SERVICE, this); |
| log("CarrierConfigLoader has started"); |
| mHandler.sendEmptyMessage(EVENT_CHECK_SYSTEM_UPDATE); |
| } |
| |
| /** |
| * Initialize the singleton CarrierConfigLoader instance. |
| * |
| * This is only done once, at startup, from {@link com.android.phone.PhoneApp#onCreate}. |
| */ |
| /* package */ |
| static CarrierConfigLoader init(Context context) { |
| synchronized (CarrierConfigLoader.class) { |
| if (sInstance == null) { |
| sInstance = new CarrierConfigLoader(context); |
| } else { |
| Log.wtf(LOG_TAG, "init() called multiple times! sInstance = " + sInstance); |
| } |
| return sInstance; |
| } |
| } |
| |
| private void broadcastConfigChangedIntent(int phoneId) { |
| Intent intent = new Intent(CarrierConfigManager.ACTION_CARRIER_CONFIG_CHANGED); |
| intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); |
| SubscriptionManager.putPhoneIdAndSubIdExtra(intent, phoneId); |
| ActivityManagerNative.broadcastStickyIntent(intent, READ_PHONE_STATE, |
| UserHandle.USER_ALL); |
| } |
| |
| /** Binds to the default or carrier config app. */ |
| private boolean bindToConfigPackage(String pkgName, int phoneId, int eventId) { |
| log("Binding to " + pkgName + " for phone " + phoneId); |
| Intent carrierService = new Intent(CarrierService.CARRIER_SERVICE_INTERFACE); |
| carrierService.setPackage(pkgName); |
| mServiceConnection[phoneId] = new CarrierServiceConnection(phoneId, eventId); |
| try { |
| return mContext.bindService(carrierService, mServiceConnection[phoneId], |
| Context.BIND_AUTO_CREATE); |
| } catch (SecurityException ex) { |
| return false; |
| } |
| } |
| |
| private CarrierIdentifier getCarrierIdForPhoneId(int phoneId) { |
| String mcc = ""; |
| String mnc = ""; |
| String imsi = ""; |
| String gid1 = ""; |
| String gid2 = ""; |
| String spn = TelephonyManager.from(mContext).getSimOperatorNameForPhone(phoneId); |
| String simOperator = TelephonyManager.from(mContext).getSimOperatorNumericForPhone(phoneId); |
| // A valid simOperator should be 5 or 6 digits, depending on the length of the MNC. |
| if (simOperator != null && simOperator.length() >= 3) { |
| mcc = simOperator.substring(0, 3); |
| mnc = simOperator.substring(3); |
| } |
| Phone phone = PhoneFactory.getPhone(phoneId); |
| if (phone != null) { |
| imsi = phone.getSubscriberId(); |
| gid1 = phone.getGroupIdLevel1(); |
| gid2 = phone.getGroupIdLevel2(); |
| } |
| |
| return new CarrierIdentifier(mcc, mnc, spn, imsi, gid1, gid2); |
| } |
| |
| /** Returns the package name of a priveleged carrier app, or null if there is none. */ |
| private String getCarrierPackageForPhoneId(int phoneId) { |
| List<String> carrierPackageNames = TelephonyManager.from(mContext) |
| .getCarrierPackageNamesForIntentAndPhone( |
| new Intent(CarrierService.CARRIER_SERVICE_INTERFACE), phoneId); |
| if (carrierPackageNames != null && carrierPackageNames.size() > 0) { |
| return carrierPackageNames.get(0); |
| } else { |
| return null; |
| } |
| } |
| |
| private String getIccIdForPhoneId(int phoneId) { |
| if (!SubscriptionManager.isValidPhoneId(phoneId)) { |
| return null; |
| } |
| Phone phone = PhoneFactory.getPhone(phoneId); |
| if (phone == null) { |
| return null; |
| } |
| return phone.getIccSerialNumber(); |
| } |
| |
| /** |
| * Writes a bundle to an XML file. |
| * |
| * The bundle will be written to a file named after the package name and ICCID, so that it can |
| * be restored later with {@link @restoreConfigFromXml}. The XML output will include the bundle |
| * and the current version of the specified package. |
| * |
| * In case of errors or invalid input, no file will be written. |
| * |
| * @param packageName the name of the package from which we fetched this bundle. |
| * @param iccid the ICCID of the subscription for which this bundle was fetched. |
| * @param config the bundle to be written. Null will be treated as an empty bundle. |
| */ |
| private void saveConfigToXml(String packageName, String iccid, PersistableBundle config) { |
| if (packageName == null || iccid == null) { |
| loge("Cannot save config with null packageName or iccid."); |
| return; |
| } |
| if (config == null) { |
| config = new PersistableBundle(); |
| } |
| |
| final String version = getPackageVersion(packageName); |
| if (version == null) { |
| loge("Failed to get package version for: " + packageName); |
| return; |
| } |
| |
| FileOutputStream outFile = null; |
| try { |
| outFile = new FileOutputStream( |
| new File(mContext.getFilesDir(), getFilenameForConfig(packageName, iccid))); |
| FastXmlSerializer out = new FastXmlSerializer(); |
| out.setOutput(outFile, "utf-8"); |
| out.startDocument("utf-8", true); |
| out.startTag(null, TAG_DOCUMENT); |
| out.startTag(null, TAG_VERSION); |
| out.text(version); |
| out.endTag(null, TAG_VERSION); |
| out.startTag(null, TAG_BUNDLE); |
| config.saveToXml(out); |
| out.endTag(null, TAG_BUNDLE); |
| out.endTag(null, TAG_DOCUMENT); |
| out.endDocument(); |
| out.flush(); |
| outFile.close(); |
| } |
| catch (IOException e) { |
| loge(e.toString()); |
| } |
| catch (XmlPullParserException e) { |
| loge(e.toString()); |
| } |
| } |
| |
| /** |
| * Reads a bundle from an XML file. |
| * |
| * This restores a bundle that was written with {@link #saveConfigToXml}. This returns the saved |
| * config bundle for the given package and ICCID. |
| * |
| * In case of errors, or if the saved config is from a different package version than the |
| * current version, then null will be returned. |
| * |
| * @param packageName the name of the package from which we fetched this bundle. |
| * @param iccid the ICCID of the subscription for which this bundle was fetched. |
| * @return the bundle from the XML file. Returns null if there is no saved config, the saved |
| * version does not match, or reading config fails. |
| */ |
| private PersistableBundle restoreConfigFromXml(String packageName, String iccid) { |
| final String version = getPackageVersion(packageName); |
| if (version == null) { |
| loge("Failed to get package version for: " + packageName); |
| return null; |
| } |
| if (packageName == null || iccid == null) { |
| loge("Cannot restore config with null packageName or iccid."); |
| return null; |
| } |
| |
| PersistableBundle restoredBundle = null; |
| FileInputStream inFile = null; |
| try { |
| inFile = new FileInputStream( |
| new File(mContext.getFilesDir(), getFilenameForConfig(packageName, iccid))); |
| XmlPullParser parser = XmlPullParserFactory.newInstance().newPullParser(); |
| parser.setInput(inFile, "utf-8"); |
| |
| int event; |
| while (((event = parser.next()) != XmlPullParser.END_DOCUMENT)) { |
| |
| if (event == XmlPullParser.START_TAG && TAG_VERSION.equals(parser.getName())) { |
| String savedVersion = parser.nextText(); |
| if (!version.equals(savedVersion)) { |
| log("Saved version mismatch: " + version + " vs " + savedVersion); |
| break; |
| } |
| } |
| |
| if (event == XmlPullParser.START_TAG && TAG_BUNDLE.equals(parser.getName())) { |
| restoredBundle = PersistableBundle.restoreFromXml(parser); |
| } |
| } |
| inFile.close(); |
| } |
| catch (FileNotFoundException e) { |
| loge(e.toString()); |
| } |
| catch (XmlPullParserException e) { |
| loge(e.toString()); |
| } |
| catch (IOException e) { |
| loge(e.toString()); |
| } |
| |
| return restoredBundle; |
| } |
| |
| /** |
| * Clears cached carrier config. |
| * This deletes all saved XML files associated with the given package name. If packageName is |
| * null, then it deletes all saved XML files. |
| * |
| * @param packageName the name of a carrier package, or null if all cached config should be |
| * cleared. |
| * @return true iff one or more files were deleted. |
| */ |
| private boolean clearCachedConfigForPackage(final String packageName) { |
| File dir = mContext.getFilesDir(); |
| File[] packageFiles = dir.listFiles(new FilenameFilter() { |
| public boolean accept(File dir, String filename) { |
| if (packageName != null) { |
| return filename.startsWith("carrierconfig-" + packageName + "-"); |
| } else { |
| return filename.startsWith("carrierconfig-"); |
| } |
| } |
| }); |
| if (packageFiles == null || packageFiles.length < 1) return false; |
| for (File f : packageFiles) { |
| log("deleting " + f.getName()); |
| f.delete(); |
| } |
| return true; |
| } |
| |
| /** Builds a canonical file name for a config file. */ |
| private String getFilenameForConfig(@NonNull String packageName, @NonNull String iccid) { |
| return "carrierconfig-" + packageName + "-" + iccid + ".xml"; |
| } |
| |
| /** Return the current version code of a package, or null if the name is not found. */ |
| private String getPackageVersion(String packageName) { |
| try { |
| PackageInfo info = mContext.getPackageManager().getPackageInfo(packageName, 0); |
| return Integer.toString(info.versionCode); |
| } catch (PackageManager.NameNotFoundException e) { |
| return null; |
| } |
| } |
| |
| /** Read up to date config. |
| * |
| * This reads config bundles for the given phoneId. That means getting the latest bundle from |
| * the default app and a privileged carrier app, if present. This will not bind to an app if we |
| * have a saved config file to use instead. |
| */ |
| private void updateConfigForPhoneId(int phoneId) { |
| // Clear in-memory cache for carrier app config, so when carrier app gets uninstalled, no |
| // stale config is left. |
| if (mConfigFromCarrierApp[phoneId] != null && |
| getCarrierPackageForPhoneId(phoneId) == null) { |
| mConfigFromCarrierApp[phoneId] = null; |
| } |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_FETCH_DEFAULT, phoneId, -1)); |
| } |
| |
| @Override public |
| @NonNull |
| PersistableBundle getConfigForSubId(int subId) { |
| try { |
| mContext.enforceCallingOrSelfPermission(READ_PRIVILEGED_PHONE_STATE, null); |
| // SKIP checking run-time READ_PHONE_STATE since using PRIVILEGED |
| } catch (SecurityException e) { |
| mContext.enforceCallingOrSelfPermission(READ_PHONE_STATE, null); |
| } |
| int phoneId = SubscriptionManager.getPhoneId(subId); |
| PersistableBundle retConfig = CarrierConfigManager.getDefaultConfig(); |
| if (SubscriptionManager.isValidPhoneId(phoneId)) { |
| PersistableBundle config = mConfigFromDefaultApp[phoneId]; |
| if (config != null) |
| retConfig.putAll(config); |
| config = mConfigFromCarrierApp[phoneId]; |
| if (config != null) |
| retConfig.putAll(config); |
| } |
| return retConfig; |
| } |
| |
| @Override |
| public void notifyConfigChangedForSubId(int subId) { |
| int phoneId = SubscriptionManager.getPhoneId(subId); |
| if (!SubscriptionManager.isValidPhoneId(phoneId)) { |
| log("Ignore invalid phoneId: " + phoneId + " for subId: " + subId); |
| return; |
| } |
| String callingPackageName = mContext.getPackageManager().getNameForUid( |
| Binder.getCallingUid()); |
| // TODO: Check that the calling packages is privileged for subId specifically. |
| int privilegeStatus = TelephonyManager.from(mContext).checkCarrierPrivilegesForPackage( |
| callingPackageName); |
| // Requires the calling app to be either a carrier privileged app or |
| // system privileged app with MODIFY_PHONE_STATE permission. |
| if (privilegeStatus != TelephonyManager.CARRIER_PRIVILEGE_STATUS_HAS_ACCESS) { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MODIFY_PHONE_STATE, |
| "Require carrier privileges or MODIFY_PHONE_STATE permission."); |
| } |
| |
| // This method should block until deleting has completed, so that an error which prevents us |
| // from clearing the cache is passed back to the carrier app. With the files successfully |
| // deleted, this can return and we will eventually bind to the carrier app. |
| clearCachedConfigForPackage(callingPackageName); |
| updateConfigForPhoneId(phoneId); |
| } |
| |
| @Override |
| public void updateConfigForPhoneId(int phoneId, String simState) { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.MODIFY_PHONE_STATE, null); |
| log("update config for phoneId: " + phoneId + " simState: " + simState); |
| if (!SubscriptionManager.isValidPhoneId(phoneId)) { |
| return; |
| } |
| // requires Java 7 for switch on string. |
| switch (simState) { |
| case IccCardConstants.INTENT_VALUE_ICC_ABSENT: |
| case IccCardConstants.INTENT_VALUE_ICC_CARD_IO_ERROR: |
| case IccCardConstants.INTENT_VALUE_ICC_CARD_RESTRICTED: |
| case IccCardConstants.INTENT_VALUE_ICC_UNKNOWN: |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_CLEAR_CONFIG, phoneId, -1)); |
| break; |
| case IccCardConstants.INTENT_VALUE_ICC_LOADED: |
| case IccCardConstants.INTENT_VALUE_ICC_LOCKED: |
| updateConfigForPhoneId(phoneId); |
| break; |
| } |
| } |
| |
| @Override |
| public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) |
| != PackageManager.PERMISSION_GRANTED) { |
| pw.println("Permission Denial: can't dump carrierconfig from from pid=" |
| + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid()); |
| return; |
| } |
| pw.println("CarrierConfigLoader: " + this); |
| for (int i = 0; i < TelephonyManager.getDefault().getPhoneCount(); i++) { |
| pw.println(" Phone Id=" + i); |
| pw.println(" mConfigFromDefaultApp=" + mConfigFromDefaultApp[i]); |
| pw.println(" mConfigFromCarrierApp=" + mConfigFromCarrierApp[i]); |
| } |
| } |
| |
| private class CarrierServiceConnection implements ServiceConnection { |
| int phoneId; |
| int eventId; |
| IBinder service; |
| |
| public CarrierServiceConnection(int phoneId, int eventId) { |
| this.phoneId = phoneId; |
| this.eventId = eventId; |
| } |
| |
| @Override |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| log("Connected to config app: " + name.flattenToString()); |
| this.service = service; |
| mHandler.sendMessage(mHandler.obtainMessage(eventId, phoneId, -1, this)); |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName name) { |
| this.service = null; |
| } |
| } |
| |
| private class ConfigLoaderBroadcastReceiver extends BroadcastReceiver { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| boolean replace = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); |
| // If replace is true, only care ACTION_PACKAGE_REPLACED. |
| if (replace && !Intent.ACTION_PACKAGE_REPLACED.equals(action)) |
| return; |
| |
| switch (action) { |
| case Intent.ACTION_BOOT_COMPLETED: |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_UNLOCKED, null)); |
| break; |
| |
| case Intent.ACTION_PACKAGE_ADDED: |
| case Intent.ACTION_PACKAGE_REMOVED: |
| case Intent.ACTION_PACKAGE_REPLACED: |
| int uid = intent.getIntExtra(Intent.EXTRA_UID, -1); |
| String packageName = mContext.getPackageManager().getNameForUid(uid); |
| if (packageName != null) { |
| // We don't have a phoneId for arg1. |
| mHandler.sendMessage( |
| mHandler.obtainMessage(EVENT_PACKAGE_CHANGED, packageName)); |
| } |
| break; |
| } |
| } |
| } |
| |
| private static void log(String msg) { |
| Log.d(LOG_TAG, msg); |
| } |
| |
| private static void loge(String msg) { |
| Log.e(LOG_TAG, msg); |
| } |
| } |
