diff options
Diffstat (limited to 'packages/Tethering/src/com/android/server/connectivity/tethering/EntitlementManager.java')
| -rw-r--r-- | packages/Tethering/src/com/android/server/connectivity/tethering/EntitlementManager.java | 678 |
1 files changed, 678 insertions, 0 deletions
diff --git a/packages/Tethering/src/com/android/server/connectivity/tethering/EntitlementManager.java b/packages/Tethering/src/com/android/server/connectivity/tethering/EntitlementManager.java new file mode 100644 index 000000000000..6b0f1de7ce85 --- /dev/null +++ b/packages/Tethering/src/com/android/server/connectivity/tethering/EntitlementManager.java @@ -0,0 +1,678 @@ +/* + * Copyright (C) 2018 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.connectivity.tethering; + +import static android.net.ConnectivityManager.EXTRA_ADD_TETHER_TYPE; +import static android.net.ConnectivityManager.EXTRA_PROVISION_CALLBACK; +import static android.net.ConnectivityManager.EXTRA_RUN_PROVISION; +import static android.net.ConnectivityManager.TETHERING_BLUETOOTH; +import static android.net.ConnectivityManager.TETHERING_INVALID; +import static android.net.ConnectivityManager.TETHERING_USB; +import static android.net.ConnectivityManager.TETHERING_WIFI; +import static android.net.ConnectivityManager.TETHER_ERROR_ENTITLEMENT_UNKONWN; +import static android.net.ConnectivityManager.TETHER_ERROR_NO_ERROR; +import static android.net.ConnectivityManager.TETHER_ERROR_PROVISION_FAILED; + +import static com.android.internal.R.string.config_wifi_tether_enable; + +import android.app.AlarmManager; +import android.app.PendingIntent; +import android.content.BroadcastReceiver; +import android.content.ComponentName; +import android.content.Context; +import android.content.Intent; +import android.content.IntentFilter; +import android.content.res.Resources; +import android.net.util.SharedLog; +import android.os.Binder; +import android.os.Bundle; +import android.os.Handler; +import android.os.Looper; +import android.os.Message; +import android.os.Parcel; +import android.os.PersistableBundle; +import android.os.ResultReceiver; +import android.os.SystemClock; +import android.os.UserHandle; +import android.provider.Settings; +import android.telephony.CarrierConfigManager; +import android.util.ArraySet; +import android.util.SparseIntArray; + +import com.android.internal.annotations.VisibleForTesting; +import com.android.internal.util.StateMachine; +import com.android.server.connectivity.MockableSystemProperties; + +import java.io.PrintWriter; + +/** + * Re-check tethering provisioning for enabled downstream tether types. + * Reference ConnectivityManager.TETHERING_{@code *} for each tether type. + * + * All methods of this class must be accessed from the thread of tethering + * state machine. + * @hide + */ +public class EntitlementManager { + private static final String TAG = EntitlementManager.class.getSimpleName(); + private static final boolean DBG = false; + + @VisibleForTesting + protected static final String DISABLE_PROVISIONING_SYSPROP_KEY = "net.tethering.noprovisioning"; + private static final String ACTION_PROVISIONING_ALARM = + "com.android.server.connectivity.tethering.PROVISIONING_RECHECK_ALARM"; + private static final String EXTRA_SUBID = "subId"; + + // {@link ComponentName} of the Service used to run tether provisioning. + private static final ComponentName TETHER_SERVICE = ComponentName.unflattenFromString( + Resources.getSystem().getString(config_wifi_tether_enable)); + private static final int MS_PER_HOUR = 60 * 60 * 1000; + private static final int EVENT_START_PROVISIONING = 0; + private static final int EVENT_STOP_PROVISIONING = 1; + private static final int EVENT_UPSTREAM_CHANGED = 2; + private static final int EVENT_MAYBE_RUN_PROVISIONING = 3; + private static final int EVENT_GET_ENTITLEMENT_VALUE = 4; + + // The ArraySet contains enabled downstream types, ex: + // {@link ConnectivityManager.TETHERING_WIFI} + // {@link ConnectivityManager.TETHERING_USB} + // {@link ConnectivityManager.TETHERING_BLUETOOTH} + private final ArraySet<Integer> mCurrentTethers; + private final Context mContext; + private final int mPermissionChangeMessageCode; + private final MockableSystemProperties mSystemProperties; + private final SharedLog mLog; + private final SparseIntArray mEntitlementCacheValue; + private final EntitlementHandler mHandler; + private final StateMachine mTetherMasterSM; + // Key: ConnectivityManager.TETHERING_*(downstream). + // Value: ConnectivityManager.TETHER_ERROR_{NO_ERROR or PROVISION_FAILED}(provisioning result). + private final SparseIntArray mCellularPermitted; + private PendingIntent mProvisioningRecheckAlarm; + private boolean mCellularUpstreamPermitted = true; + private boolean mUsingCellularAsUpstream = false; + private boolean mNeedReRunProvisioningUi = false; + private OnUiEntitlementFailedListener mListener; + private TetheringConfigurationFetcher mFetcher; + + public EntitlementManager(Context ctx, StateMachine tetherMasterSM, SharedLog log, + int permissionChangeMessageCode, MockableSystemProperties systemProperties) { + mContext = ctx; + mLog = log.forSubComponent(TAG); + mCurrentTethers = new ArraySet<Integer>(); + mCellularPermitted = new SparseIntArray(); + mSystemProperties = systemProperties; + mEntitlementCacheValue = new SparseIntArray(); + mTetherMasterSM = tetherMasterSM; + mPermissionChangeMessageCode = permissionChangeMessageCode; + final Handler masterHandler = tetherMasterSM.getHandler(); + // Create entitlement's own handler which is associated with TetherMaster thread + // let all entitlement processes run in the same thread. + mHandler = new EntitlementHandler(masterHandler.getLooper()); + mContext.registerReceiver(mReceiver, new IntentFilter(ACTION_PROVISIONING_ALARM), + null, mHandler); + } + + public void setOnUiEntitlementFailedListener(final OnUiEntitlementFailedListener listener) { + mListener = listener; + } + + /** Callback fired when UI entitlement failed. */ + public interface OnUiEntitlementFailedListener { + /** + * Ui entitlement check fails in |downstream|. + * + * @param downstream tethering type from ConnectivityManager.TETHERING_{@code *}. + */ + void onUiEntitlementFailed(int downstream); + } + + public void setTetheringConfigurationFetcher(final TetheringConfigurationFetcher fetcher) { + mFetcher = fetcher; + } + + /** Interface to fetch TetheringConfiguration. */ + public interface TetheringConfigurationFetcher { + /** + * Fetch current tethering configuration. This will be called to ensure whether entitlement + * check is needed. + * @return TetheringConfiguration instance. + */ + TetheringConfiguration fetchTetheringConfiguration(); + } + + /** + * Check if cellular upstream is permitted. + */ + public boolean isCellularUpstreamPermitted() { + // If provisioning is required and EntitlementManager don't know any downstream, + // cellular upstream should not be allowed. + final TetheringConfiguration config = mFetcher.fetchTetheringConfiguration(); + if (mCurrentTethers.size() == 0 && isTetherProvisioningRequired(config)) { + return false; + } + return mCellularUpstreamPermitted; + } + + /** + * This is called when tethering starts. + * Launch provisioning app if upstream is cellular. + * + * @param downstreamType tethering type from ConnectivityManager.TETHERING_{@code *} + * @param showProvisioningUi a boolean indicating whether to show the + * provisioning app UI if there is one. + */ + public void startProvisioningIfNeeded(int downstreamType, boolean showProvisioningUi) { + mHandler.sendMessage(mHandler.obtainMessage(EVENT_START_PROVISIONING, + downstreamType, encodeBool(showProvisioningUi))); + } + + private void handleStartProvisioningIfNeeded(int type, boolean showProvisioningUi) { + if (!isValidDownstreamType(type)) return; + + if (!mCurrentTethers.contains(type)) mCurrentTethers.add(type); + + final TetheringConfiguration config = mFetcher.fetchTetheringConfiguration(); + if (isTetherProvisioningRequired(config)) { + // If provisioning is required and the result is not available yet, + // cellular upstream should not be allowed. + if (mCellularPermitted.size() == 0) { + mCellularUpstreamPermitted = false; + } + // If upstream is not cellular, provisioning app would not be launched + // till upstream change to cellular. + if (mUsingCellularAsUpstream) { + if (showProvisioningUi) { + runUiTetherProvisioning(type, config.subId); + } else { + runSilentTetherProvisioning(type, config.subId); + } + mNeedReRunProvisioningUi = false; + } else { + mNeedReRunProvisioningUi |= showProvisioningUi; + } + } else { + mCellularUpstreamPermitted = true; + } + } + + /** + * Tell EntitlementManager that a given type of tethering has been disabled + * + * @param type tethering type from ConnectivityManager.TETHERING_{@code *} + */ + public void stopProvisioningIfNeeded(int type) { + mHandler.sendMessage(mHandler.obtainMessage(EVENT_STOP_PROVISIONING, type, 0)); + } + + private void handleStopProvisioningIfNeeded(int type) { + if (!isValidDownstreamType(type)) return; + + mCurrentTethers.remove(type); + // There are lurking bugs where the notion of "provisioning required" or + // "tethering supported" may change without without tethering being notified properly. + // Remove the mapping all the time no matter provisioning is required or not. + removeDownstreamMapping(type); + } + + /** + * Notify EntitlementManager if upstream is cellular or not. + * + * @param isCellular whether tethering upstream is cellular. + */ + public void notifyUpstream(boolean isCellular) { + mHandler.sendMessage(mHandler.obtainMessage( + EVENT_UPSTREAM_CHANGED, encodeBool(isCellular), 0)); + } + + private void handleNotifyUpstream(boolean isCellular) { + if (DBG) { + mLog.i("notifyUpstream: " + isCellular + + ", mCellularUpstreamPermitted: " + mCellularUpstreamPermitted + + ", mNeedReRunProvisioningUi: " + mNeedReRunProvisioningUi); + } + mUsingCellularAsUpstream = isCellular; + + if (mUsingCellularAsUpstream) { + final TetheringConfiguration config = mFetcher.fetchTetheringConfiguration(); + handleMaybeRunProvisioning(config); + } + } + + /** Run provisioning if needed */ + public void maybeRunProvisioning() { + mHandler.sendMessage(mHandler.obtainMessage(EVENT_MAYBE_RUN_PROVISIONING)); + } + + private void handleMaybeRunProvisioning(final TetheringConfiguration config) { + if (mCurrentTethers.size() == 0 || !isTetherProvisioningRequired(config)) { + return; + } + + // Whenever any entitlement value changes, all downstreams will re-evaluate whether they + // are allowed. Therefore even if the silent check here ends in a failure and the UI later + // yields success, then the downstream that got a failure will re-evaluate as a result of + // the change and get the new correct value. + for (Integer downstream : mCurrentTethers) { + if (mCellularPermitted.indexOfKey(downstream) < 0) { + if (mNeedReRunProvisioningUi) { + mNeedReRunProvisioningUi = false; + runUiTetherProvisioning(downstream, config.subId); + } else { + runSilentTetherProvisioning(downstream, config.subId); + } + } + } + } + + /** + * Check if the device requires a provisioning check in order to enable tethering. + * + * @param config an object that encapsulates the various tethering configuration elements. + * @return a boolean - {@code true} indicating tether provisioning is required by the carrier. + */ + @VisibleForTesting + protected boolean isTetherProvisioningRequired(final TetheringConfiguration config) { + if (mSystemProperties.getBoolean(DISABLE_PROVISIONING_SYSPROP_KEY, false) + || config.provisioningApp.length == 0) { + return false; + } + if (carrierConfigAffirmsEntitlementCheckNotRequired(config)) { + return false; + } + return (config.provisioningApp.length == 2); + } + + /** + * Re-check tethering provisioning for all enabled tether types. + * Reference ConnectivityManager.TETHERING_{@code *} for each tether type. + * + * @param config an object that encapsulates the various tethering configuration elements. + * Note: this method is only called from TetherMaster on the handler thread. + * If there are new callers from different threads, the logic should move to + * masterHandler to avoid race conditions. + */ + public void reevaluateSimCardProvisioning(final TetheringConfiguration config) { + if (DBG) mLog.i("reevaluateSimCardProvisioning"); + + if (!mHandler.getLooper().isCurrentThread()) { + // Except for test, this log should not appear in normal flow. + mLog.log("reevaluateSimCardProvisioning() don't run in TetherMaster thread"); + } + mEntitlementCacheValue.clear(); + mCellularPermitted.clear(); + + // TODO: refine provisioning check to isTetherProvisioningRequired() ?? + if (!config.hasMobileHotspotProvisionApp() + || carrierConfigAffirmsEntitlementCheckNotRequired(config)) { + evaluateCellularPermission(config); + return; + } + + if (mUsingCellularAsUpstream) { + handleMaybeRunProvisioning(config); + } + } + + /** + * Get carrier configuration bundle. + * @param config an object that encapsulates the various tethering configuration elements. + * */ + public PersistableBundle getCarrierConfig(final TetheringConfiguration config) { + final CarrierConfigManager configManager = (CarrierConfigManager) mContext + .getSystemService(Context.CARRIER_CONFIG_SERVICE); + if (configManager == null) return null; + + final PersistableBundle carrierConfig = configManager.getConfigForSubId(config.subId); + + if (CarrierConfigManager.isConfigForIdentifiedCarrier(carrierConfig)) { + return carrierConfig; + } + + return null; + } + + // The logic here is aimed solely at confirming that a CarrierConfig exists + // and affirms that entitlement checks are not required. + // + // TODO: find a better way to express this, or alter the checking process + // entirely so that this is more intuitive. + private boolean carrierConfigAffirmsEntitlementCheckNotRequired( + final TetheringConfiguration config) { + // Check carrier config for entitlement checks + final PersistableBundle carrierConfig = getCarrierConfig(config); + if (carrierConfig == null) return false; + + // A CarrierConfigManager was found and it has a config. + final boolean isEntitlementCheckRequired = carrierConfig.getBoolean( + CarrierConfigManager.KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL); + return !isEntitlementCheckRequired; + } + + /** + * Run no UI tethering provisioning check. + * @param type tethering type from ConnectivityManager.TETHERING_{@code *} + * @param subId default data subscription ID. + */ + @VisibleForTesting + protected void runSilentTetherProvisioning(int type, int subId) { + if (DBG) mLog.i("runSilentTetherProvisioning: " + type); + // For silent provisioning, settings would stop tethering when entitlement fail. + ResultReceiver receiver = buildProxyReceiver(type, false/* notifyFail */, null); + + Intent intent = new Intent(); + intent.putExtra(EXTRA_ADD_TETHER_TYPE, type); + intent.putExtra(EXTRA_RUN_PROVISION, true); + intent.putExtra(EXTRA_PROVISION_CALLBACK, receiver); + intent.putExtra(EXTRA_SUBID, subId); + intent.setComponent(TETHER_SERVICE); + final long ident = Binder.clearCallingIdentity(); + try { + mContext.startServiceAsUser(intent, UserHandle.CURRENT); + } finally { + Binder.restoreCallingIdentity(ident); + } + } + + private void runUiTetherProvisioning(int type, int subId) { + ResultReceiver receiver = buildProxyReceiver(type, true/* notifyFail */, null); + runUiTetherProvisioning(type, subId, receiver); + } + + /** + * Run the UI-enabled tethering provisioning check. + * @param type tethering type from ConnectivityManager.TETHERING_{@code *} + * @param subId default data subscription ID. + * @param receiver to receive entitlement check result. + */ + @VisibleForTesting + protected void runUiTetherProvisioning(int type, int subId, ResultReceiver receiver) { + if (DBG) mLog.i("runUiTetherProvisioning: " + type); + + Intent intent = new Intent(Settings.ACTION_TETHER_PROVISIONING); + intent.putExtra(EXTRA_ADD_TETHER_TYPE, type); + intent.putExtra(EXTRA_PROVISION_CALLBACK, receiver); + intent.putExtra(EXTRA_SUBID, subId); + intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); + final long ident = Binder.clearCallingIdentity(); + try { + mContext.startActivityAsUser(intent, UserHandle.CURRENT); + } finally { + Binder.restoreCallingIdentity(ident); + } + } + + // Not needed to check if this don't run on the handler thread because it's private. + private void scheduleProvisioningRechecks(final TetheringConfiguration config) { + if (mProvisioningRecheckAlarm == null) { + final int period = config.provisioningCheckPeriod; + if (period <= 0) return; + + Intent intent = new Intent(ACTION_PROVISIONING_ALARM); + mProvisioningRecheckAlarm = PendingIntent.getBroadcast(mContext, 0, intent, 0); + AlarmManager alarmManager = (AlarmManager) mContext.getSystemService( + Context.ALARM_SERVICE); + long periodMs = period * MS_PER_HOUR; + long firstAlarmTime = SystemClock.elapsedRealtime() + periodMs; + alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME, firstAlarmTime, periodMs, + mProvisioningRecheckAlarm); + } + } + + private void cancelTetherProvisioningRechecks() { + if (mProvisioningRecheckAlarm != null) { + AlarmManager alarmManager = (AlarmManager) mContext.getSystemService( + Context.ALARM_SERVICE); + alarmManager.cancel(mProvisioningRecheckAlarm); + mProvisioningRecheckAlarm = null; + } + } + + private void evaluateCellularPermission(final TetheringConfiguration config) { + final boolean oldPermitted = mCellularUpstreamPermitted; + mCellularUpstreamPermitted = (!isTetherProvisioningRequired(config) + || mCellularPermitted.indexOfValue(TETHER_ERROR_NO_ERROR) > -1); + + if (DBG) { + mLog.i("Cellular permission change from " + oldPermitted + + " to " + mCellularUpstreamPermitted); + } + + if (mCellularUpstreamPermitted != oldPermitted) { + mLog.log("Cellular permission change: " + mCellularUpstreamPermitted); + mTetherMasterSM.sendMessage(mPermissionChangeMessageCode); + } + // Only schedule periodic re-check when tether is provisioned + // and the result is ok. + if (mCellularUpstreamPermitted && mCellularPermitted.size() > 0) { + scheduleProvisioningRechecks(config); + } else { + cancelTetherProvisioningRechecks(); + } + } + + /** + * Add the mapping between provisioning result and tethering type. + * Notify UpstreamNetworkMonitor if Cellular permission changes. + * + * @param type tethering type from ConnectivityManager.TETHERING_{@code *} + * @param resultCode Provisioning result + */ + protected void addDownstreamMapping(int type, int resultCode) { + mLog.i("addDownstreamMapping: " + type + ", result: " + resultCode + + " ,TetherTypeRequested: " + mCurrentTethers.contains(type)); + if (!mCurrentTethers.contains(type)) return; + + mCellularPermitted.put(type, resultCode); + final TetheringConfiguration config = mFetcher.fetchTetheringConfiguration(); + evaluateCellularPermission(config); + } + + /** + * Remove the mapping for input tethering type. + * @param type tethering type from ConnectivityManager.TETHERING_{@code *} + */ + protected void removeDownstreamMapping(int type) { + mLog.i("removeDownstreamMapping: " + type); + mCellularPermitted.delete(type); + final TetheringConfiguration config = mFetcher.fetchTetheringConfiguration(); + evaluateCellularPermission(config); + } + + private final BroadcastReceiver mReceiver = new BroadcastReceiver() { + @Override + public void onReceive(Context context, Intent intent) { + if (ACTION_PROVISIONING_ALARM.equals(intent.getAction())) { + mLog.log("Received provisioning alarm"); + final TetheringConfiguration config = mFetcher.fetchTetheringConfiguration(); + reevaluateSimCardProvisioning(config); + } + } + }; + + private class EntitlementHandler extends Handler { + EntitlementHandler(Looper looper) { + super(looper); + } + + @Override + public void handleMessage(Message msg) { + switch (msg.what) { + case EVENT_START_PROVISIONING: + handleStartProvisioningIfNeeded(msg.arg1, toBool(msg.arg2)); + break; + case EVENT_STOP_PROVISIONING: + handleStopProvisioningIfNeeded(msg.arg1); + break; + case EVENT_UPSTREAM_CHANGED: + handleNotifyUpstream(toBool(msg.arg1)); + break; + case EVENT_MAYBE_RUN_PROVISIONING: + final TetheringConfiguration config = mFetcher.fetchTetheringConfiguration(); + handleMaybeRunProvisioning(config); + break; + case EVENT_GET_ENTITLEMENT_VALUE: + handleGetLatestTetheringEntitlementValue(msg.arg1, (ResultReceiver) msg.obj, + toBool(msg.arg2)); + break; + default: + mLog.log("Unknown event: " + msg.what); + break; + } + } + } + + private static boolean toBool(int encodedBoolean) { + return encodedBoolean != 0; + } + + private static int encodeBool(boolean b) { + return b ? 1 : 0; + } + + private static boolean isValidDownstreamType(int type) { + switch (type) { + case TETHERING_BLUETOOTH: + case TETHERING_USB: + case TETHERING_WIFI: + return true; + default: + return false; + } + } + + /** + * Dump the infromation of EntitlementManager. + * @param pw {@link PrintWriter} is used to print formatted + */ + public void dump(PrintWriter pw) { + pw.print("mCellularUpstreamPermitted: "); + pw.println(mCellularUpstreamPermitted); + for (Integer type : mCurrentTethers) { + pw.print("Type: "); + pw.print(typeString(type)); + if (mCellularPermitted.indexOfKey(type) > -1) { + pw.print(", Value: "); + pw.println(errorString(mCellularPermitted.get(type))); + } else { + pw.println(", Value: empty"); + } + } + } + + private static String typeString(int type) { + switch (type) { + case TETHERING_BLUETOOTH: return "TETHERING_BLUETOOTH"; + case TETHERING_INVALID: return "TETHERING_INVALID"; + case TETHERING_USB: return "TETHERING_USB"; + case TETHERING_WIFI: return "TETHERING_WIFI"; + default: + return String.format("TETHERING UNKNOWN TYPE (%d)", type); + } + } + + private static String errorString(int value) { + switch (value) { + case TETHER_ERROR_ENTITLEMENT_UNKONWN: return "TETHER_ERROR_ENTITLEMENT_UNKONWN"; + case TETHER_ERROR_NO_ERROR: return "TETHER_ERROR_NO_ERROR"; + case TETHER_ERROR_PROVISION_FAILED: return "TETHER_ERROR_PROVISION_FAILED"; + default: + return String.format("UNKNOWN ERROR (%d)", value); + } + } + + private ResultReceiver buildProxyReceiver(int type, boolean notifyFail, + final ResultReceiver receiver) { + ResultReceiver rr = new ResultReceiver(mHandler) { + @Override + protected void onReceiveResult(int resultCode, Bundle resultData) { + int updatedCacheValue = updateEntitlementCacheValue(type, resultCode); + addDownstreamMapping(type, updatedCacheValue); + if (updatedCacheValue == TETHER_ERROR_PROVISION_FAILED && notifyFail) { + mListener.onUiEntitlementFailed(type); + } + if (receiver != null) receiver.send(updatedCacheValue, null); + } + }; + + return writeToParcel(rr); + } + + // Instances of ResultReceiver need to be public classes for remote processes to be able + // to load them (otherwise, ClassNotFoundException). For private classes, this method + // performs a trick : round-trip parceling any instance of ResultReceiver will return a + // vanilla instance of ResultReceiver sharing the binder token with the original receiver. + // The binder token has a reference to the original instance of the private class and will + // still call its methods, and can be sent over. However it cannot be used for anything + // else than sending over a Binder call. + // While round-trip parceling is not great, there is currently no other way of generating + // a vanilla instance of ResultReceiver because all its fields are private. + private ResultReceiver writeToParcel(final ResultReceiver receiver) { + Parcel parcel = Parcel.obtain(); + receiver.writeToParcel(parcel, 0); + parcel.setDataPosition(0); + ResultReceiver receiverForSending = ResultReceiver.CREATOR.createFromParcel(parcel); + parcel.recycle(); + return receiverForSending; + } + + /** + * Update the last entitlement value to internal cache + * + * @param type tethering type from ConnectivityManager.TETHERING_{@code *} + * @param resultCode last entitlement value + * @return the last updated entitlement value + */ + private int updateEntitlementCacheValue(int type, int resultCode) { + if (DBG) { + mLog.i("updateEntitlementCacheValue: " + type + ", result: " + resultCode); + } + if (resultCode == TETHER_ERROR_NO_ERROR) { + mEntitlementCacheValue.put(type, resultCode); + return resultCode; + } else { + mEntitlementCacheValue.put(type, TETHER_ERROR_PROVISION_FAILED); + return TETHER_ERROR_PROVISION_FAILED; + } + } + + /** Get the last value of the tethering entitlement check. */ + public void getLatestTetheringEntitlementResult(int downstream, ResultReceiver receiver, + boolean showEntitlementUi) { + mHandler.sendMessage(mHandler.obtainMessage(EVENT_GET_ENTITLEMENT_VALUE, + downstream, encodeBool(showEntitlementUi), receiver)); + + } + + private void handleGetLatestTetheringEntitlementValue(int downstream, ResultReceiver receiver, + boolean showEntitlementUi) { + final TetheringConfiguration config = mFetcher.fetchTetheringConfiguration(); + if (!isTetherProvisioningRequired(config)) { + receiver.send(TETHER_ERROR_NO_ERROR, null); + return; + } + + final int cacheValue = mEntitlementCacheValue.get( + downstream, TETHER_ERROR_ENTITLEMENT_UNKONWN); + if (cacheValue == TETHER_ERROR_NO_ERROR || !showEntitlementUi) { + receiver.send(cacheValue, null); + } else { + ResultReceiver proxy = buildProxyReceiver(downstream, false/* notifyFail */, receiver); + runUiTetherProvisioning(downstream, config.subId, proxy); + } + } +} |