/* * Copyright (C) 2011, 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.bandwidthtest.util; import android.app.DownloadManager; import android.app.DownloadManager.Query; import android.app.DownloadManager.Request; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.ApplicationInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.database.Cursor; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.net.NetworkInfo.State; import android.net.Uri; import android.net.wifi.ScanResult; import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiConfiguration.KeyMgmt; import android.net.wifi.WifiManager; import android.os.Handler; import android.os.Message; import android.provider.Settings; import android.util.Log; import com.android.bandwidthtest.NetworkState; import com.android.bandwidthtest.NetworkState.StateTransitionDirection; import com.android.internal.util.AsyncChannel; import junit.framework.Assert; import java.io.IOException; import java.net.UnknownHostException; import java.util.List; /* * Utility class used to set the connectivity of the device and to download files. */ public class ConnectionUtil { private static final String LOG_TAG = "ConnectionUtil"; private static final String DOWNLOAD_MANAGER_PKG_NAME = "com.android.providers.downloads"; private static final int WAIT_FOR_SCAN_RESULT = 10 * 1000; // 10 seconds private static final int WIFI_SCAN_TIMEOUT = 50 * 1000; public static final int SHORT_TIMEOUT = 5 * 1000; public static final int LONG_TIMEOUT = 5 * 60 * 1000; // 5 minutes private ConnectivityReceiver mConnectivityReceiver = null; private WifiReceiver mWifiReceiver = null; private DownloadReceiver mDownloadReceiver = null; private DownloadManager mDownloadManager; private NetworkInfo mNetworkInfo; private NetworkInfo mOtherNetworkInfo; private boolean mScanResultIsAvailable = false; private ConnectivityManager mCM; private Object mWifiMonitor = new Object(); private Object mConnectivityMonitor = new Object(); private Object mDownloadMonitor = new Object(); private int mWifiState; private NetworkInfo mWifiNetworkInfo; private WifiManager mWifiManager; private Context mContext; // Verify connectivity state private static final int NUM_NETWORK_TYPES = ConnectivityManager.MAX_NETWORK_TYPE + 1; private NetworkState[] mConnectivityState = new NetworkState[NUM_NETWORK_TYPES]; public ConnectionUtil(Context context) { mContext = context; } /** * Initialize the class. Needs to be called before any other methods in {@link ConnectionUtil} * * @throws Exception */ public void initialize() throws Exception { // Register a connectivity receiver for CONNECTIVITY_ACTION mConnectivityReceiver = new ConnectivityReceiver(); mContext.registerReceiver(mConnectivityReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION)); // Register a download receiver for ACTION_DOWNLOAD_COMPLETE mDownloadReceiver = new DownloadReceiver(); mContext.registerReceiver(mDownloadReceiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE)); // Register a wifi receiver mWifiReceiver = new WifiReceiver(); IntentFilter mIntentFilter = new IntentFilter(); mIntentFilter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); mIntentFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); mIntentFilter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION); mIntentFilter.addAction(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); mIntentFilter.addAction(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); mContext.registerReceiver(mWifiReceiver, mIntentFilter); // Get an instance of ConnectivityManager mCM = (ConnectivityManager)mContext.getSystemService(Context.CONNECTIVITY_SERVICE); // Get an instance of WifiManager mWifiManager =(WifiManager)mContext.getSystemService(Context.WIFI_SERVICE); mDownloadManager = (DownloadManager)mContext.getSystemService(Context.DOWNLOAD_SERVICE); initializeNetworkStates(); } /** * Additional initialization needed for wifi related tests. */ public void wifiTestInit() { mWifiManager.setWifiEnabled(true); Log.v(LOG_TAG, "Clear Wifi before we start the test."); sleep(SHORT_TIMEOUT); removeConfiguredNetworksAndDisableWifi(); } /** * A wrapper of a broadcast receiver which provides network connectivity information * for all kinds of network: wifi, mobile, etc. */ private class ConnectivityReceiver extends BroadcastReceiver { /** * {@inheritDoc} */ @Override public void onReceive(Context context, Intent intent) { if (isInitialStickyBroadcast()) { Log.d(LOG_TAG, "This is a sticky broadcast don't do anything."); return; } Log.v(LOG_TAG, "ConnectivityReceiver: onReceive() is called with " + intent); String action = intent.getAction(); if (!action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) { Log.v("ConnectivityReceiver", "onReceive() called with " + intent); return; } final ConnectivityManager connManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); mNetworkInfo = connManager.getActiveNetworkInfo(); if (intent.hasExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO)) { mOtherNetworkInfo = (NetworkInfo) intent.getParcelableExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO); } Log.v(LOG_TAG, "mNetworkInfo: " + mNetworkInfo.toString()); recordNetworkState(mNetworkInfo.getType(), mNetworkInfo.getState()); if (mOtherNetworkInfo != null) { Log.v(LOG_TAG, "mOtherNetworkInfo: " + mOtherNetworkInfo.toString()); recordNetworkState(mOtherNetworkInfo.getType(), mOtherNetworkInfo.getState()); } notifyNetworkConnectivityChange(); } } /** * A wrapper of a broadcast receiver which provides wifi information. */ private class WifiReceiver extends BroadcastReceiver { /** * {@inheritDoc} */ @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); Log.v("WifiReceiver", "onReceive() is calleld with " + intent); if (action.equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) { Log.v(LOG_TAG, "Scan results are available"); notifyScanResult(); } else if (action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) { mWifiNetworkInfo = (NetworkInfo) intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO); Log.v(LOG_TAG, "mWifiNetworkInfo: " + mWifiNetworkInfo.toString()); if (mWifiNetworkInfo.getState() == State.CONNECTED) { intent.getStringExtra(WifiManager.EXTRA_BSSID); } notifyWifiState(); } else if (action.equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) { mWifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_UNKNOWN); notifyWifiState(); } else if (action.equals(WifiManager.WIFI_AP_STATE_CHANGED_ACTION)) { notifyWifiAPState(); } else { return; } } } /** * A wrapper of a broadcast receiver which provides download manager information. */ private class DownloadReceiver extends BroadcastReceiver { /** * {@inheritDoc} */ @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); Log.v("DownloadReceiver", "onReceive() is called with " + intent); // Download complete if (action.equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)) { notifiyDownloadState(); } } } private class WifiServiceHandler extends Handler { /** * {@inheritDoc} */ @Override public void handleMessage(Message msg) { switch (msg.what) { case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { // AsyncChannel in msg.obj } else { Log.v(LOG_TAG, "Failed to establish AsyncChannel connection"); } break; default: // Ignore break; } } } /** * Initialize all the network states. */ public void initializeNetworkStates() { // For each network type, initialize network states to UNKNOWN, and no verification // flag is set. for (int networkType = NUM_NETWORK_TYPES - 1; networkType >= 0; networkType--) { mConnectivityState[networkType] = new NetworkState(); Log.v(LOG_TAG, "Initialize network state for " + networkType + ": " + mConnectivityState[networkType].toString()); } } public void recordNetworkState(int networkType, State networkState) { // deposit a network state Log.v(LOG_TAG, "record network state for network " + networkType + ", state is " + networkState); mConnectivityState[networkType].recordState(networkState); } /** * Set the state transition criteria * * @param networkType * @param initState * @param transitionDir * @param targetState */ public void setStateTransitionCriteria(int networkType, State initState, StateTransitionDirection transitionDir, State targetState) { mConnectivityState[networkType].setStateTransitionCriteria( initState, transitionDir, targetState); } /** * Validate the states recorded. * @param networkType * @return */ public boolean validateNetworkStates(int networkType) { Log.v(LOG_TAG, "validate network state for " + networkType + ": "); return mConnectivityState[networkType].validateStateTransition(); } /** * Fetch the failure reason for the transition. * @param networkType * @return result from network state validation */ public String getTransitionFailureReason(int networkType) { Log.v(LOG_TAG, "get network state transition failure reason for " + networkType + ": " + mConnectivityState[networkType].toString()); return mConnectivityState[networkType].getFailureReason(); } /** * Send a notification via the mConnectivityMonitor when the network connectivity changes. */ private void notifyNetworkConnectivityChange() { synchronized(mConnectivityMonitor) { Log.v(LOG_TAG, "notify network connectivity changed"); mConnectivityMonitor.notifyAll(); } } /** * Send a notification when a scan for the wifi network is done. */ private void notifyScanResult() { synchronized (this) { Log.v(LOG_TAG, "notify that scan results are available"); this.notify(); } } /** * Send a notification via the mWifiMonitor when the wifi state changes. */ private void notifyWifiState() { synchronized (mWifiMonitor) { Log.v(LOG_TAG, "notify wifi state changed."); mWifiMonitor.notify(); } } /** * Send a notification via the mDownloadMonitor when a download is complete. */ private void notifiyDownloadState() { synchronized (mDownloadMonitor) { Log.v(LOG_TAG, "notifiy download manager state changed."); mDownloadMonitor.notify(); } } /** * Send a notification when the wifi ap state changes. */ private void notifyWifiAPState() { synchronized (this) { Log.v(LOG_TAG, "notify wifi AP state changed."); this.notify(); } } /** * Start a download on a given url and wait for completion. * * @param targetUrl the target to download.x * @param timeout to wait for download to finish * @return true if we successfully downloaded the requestedUrl, false otherwise. */ public boolean startDownloadAndWait(String targetUrl, long timeout) { if (targetUrl.length() == 0 || targetUrl == null) { Log.v(LOG_TAG, "Empty or Null target url requested to DownloadManager"); return true; } Request request = new Request(Uri.parse(targetUrl)); long enqueue = mDownloadManager.enqueue(request); Log.v(LOG_TAG, "Sending download request of " + targetUrl + " to DownloadManager"); long startTime = System.currentTimeMillis(); while (true) { if ((System.currentTimeMillis() - startTime) > timeout) { Log.v(LOG_TAG, "startDownloadAndWait timed out, failed to fetch " + targetUrl + " within " + timeout); return downloadSuccessful(enqueue); } Log.v(LOG_TAG, "Waiting for the download to finish " + targetUrl); synchronized (mDownloadMonitor) { try { mDownloadMonitor.wait(SHORT_TIMEOUT); } catch (InterruptedException e) { e.printStackTrace(); } if (!downloadSuccessful(enqueue)) { continue; } return true; } } } /** * Fetch the Download Manager's UID. * @return the Download Manager's UID */ public int downloadManagerUid() { try { PackageManager pm = mContext.getPackageManager(); ApplicationInfo appInfo = pm.getApplicationInfo(DOWNLOAD_MANAGER_PKG_NAME, PackageManager.GET_META_DATA); return appInfo.uid; } catch (NameNotFoundException e) { Log.d(LOG_TAG, "Did not find the package for the download service."); return -1; } } /** * Determines if a given download was successful by querying the DownloadManager. * * @param enqueue the id used to identify/query the DownloadManager with. * @return true if download was successful, false otherwise. */ private boolean downloadSuccessful(long enqueue) { Query query = new Query(); query.setFilterById(enqueue); Cursor c = mDownloadManager.query(query); if (c.moveToFirst()) { int columnIndex = c.getColumnIndex(DownloadManager.COLUMN_STATUS); if (DownloadManager.STATUS_SUCCESSFUL == c.getInt(columnIndex)) { Log.v(LOG_TAG, "Successfully downloaded file!"); return true; } } return false; } /** * Wait for network connectivity state. * @param networkType the network to check for * @param expectedState the desired state * @param timeout in milliseconds * @return true if the network connectivity state matched what was expected */ public boolean waitForNetworkState(int networkType, State expectedState, long timeout) { long startTime = System.currentTimeMillis(); while (true) { if ((System.currentTimeMillis() - startTime) > timeout) { Log.v(LOG_TAG, "waitForNetworkState time out, the state of network type " + networkType + " is: " + mCM.getNetworkInfo(networkType).getState()); if (mCM.getNetworkInfo(networkType).getState() != expectedState) { return false; } else { // the broadcast has been sent out. the state has been changed. Log.v(LOG_TAG, "networktype: " + networkType + " state: " + mCM.getNetworkInfo(networkType)); return true; } } Log.v(LOG_TAG, "Wait for the connectivity state for network: " + networkType + " to be " + expectedState.toString()); synchronized (mConnectivityMonitor) { try { mConnectivityMonitor.wait(SHORT_TIMEOUT); } catch (InterruptedException e) { e.printStackTrace(); } if (mNetworkInfo == null) { Log.v(LOG_TAG, "Do not have networkInfo! Force fetch of network info."); mNetworkInfo = mCM.getActiveNetworkInfo(); } // Still null after force fetch? Maybe the network did not have time to be brought // up yet. if (mNetworkInfo == null) { Log.v(LOG_TAG, "Failed to force fetch networkInfo. " + "The network is still not ready. Wait for the next broadcast"); continue; } if ((mNetworkInfo.getType() != networkType) || (mNetworkInfo.getState() != expectedState)) { Log.v(LOG_TAG, "network state for " + mNetworkInfo.getType() + "is: " + mNetworkInfo.getState()); continue; } return true; } } } /** * Wait for a given wifi state to occur within a given timeout. * @param expectedState the expected wifi state. * @param timeout for the state to be set in milliseconds. * @return true if the state was achieved within the timeout, false otherwise. */ public boolean waitForWifiState(int expectedState, long timeout) { // Wait for Wifi state: WIFI_STATE_DISABLED, WIFI_STATE_DISABLING, WIFI_STATE_ENABLED, // WIFI_STATE_ENALBING, WIFI_STATE_UNKNOWN long startTime = System.currentTimeMillis(); while (true) { if ((System.currentTimeMillis() - startTime) > timeout) { if (mWifiState != expectedState) { return false; } else { return true; } } Log.v(LOG_TAG, "Wait for wifi state to be: " + expectedState); synchronized (mWifiMonitor) { try { mWifiMonitor.wait(SHORT_TIMEOUT); } catch (InterruptedException e) { e.printStackTrace(); } if (mWifiState != expectedState) { Log.v(LOG_TAG, "Wifi state is: " + mWifiState); continue; } return true; } } } /** * Convenience method to determine if we are connected to a mobile network. * @return true if connected to a mobile network, false otherwise. */ public boolean isConnectedToMobile() { NetworkInfo networkInfo = mCM.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); return networkInfo.isConnected(); } /** * Convenience method to determine if we are connected to wifi. * @return true if connected to wifi, false otherwise. */ public boolean isConnectedToWifi() { NetworkInfo networkInfo = mCM.getNetworkInfo(ConnectivityManager.TYPE_WIFI); return networkInfo.isConnected(); } /** * Associate the device to given SSID * If the device is already associated with a WiFi, disconnect and forget it, * We don't verify whether the connection is successful or not, leave this to the test */ public boolean connectToWifi(String knownSSID) { WifiConfiguration config = new WifiConfiguration(); config.SSID = knownSSID; config.allowedKeyManagement.set(KeyMgmt.NONE); return connectToWifiWithConfiguration(config); } /** * Connect to Wi-Fi with the given configuration. * @param config * @return true if we are connected to a given AP. */ public boolean connectToWifiWithConfiguration(WifiConfiguration config) { // The SSID in the configuration is a pure string, need to convert it to a quoted string. String ssid = config.SSID; config.SSID = convertToQuotedString(ssid); // If wifi is not enabled, enable it if (!mWifiManager.isWifiEnabled()) { Log.v(LOG_TAG, "Wifi is not enabled, enable it"); mWifiManager.setWifiEnabled(true); // wait for the wifi state change before start scanning. if (!waitForWifiState(WifiManager.WIFI_STATE_ENABLED, 2 * SHORT_TIMEOUT)) { Log.v(LOG_TAG, "Wait for WIFI_STATE_ENABLED failed"); return false; } } boolean foundApInScanResults = false; for (int retry = 0; retry < 5; retry++) { List netList = mWifiManager.getScanResults(); if (netList != null) { Log.v(LOG_TAG, "size of scan result list: " + netList.size()); for (int i = 0; i < netList.size(); i++) { ScanResult sr= netList.get(i); if (sr.SSID.equals(ssid)) { Log.v(LOG_TAG, "Found " + ssid + " in the scan result list."); Log.v(LOG_TAG, "Retry: " + retry); foundApInScanResults = true; mWifiManager.connect(config, new WifiManager.ActionListener() { public void onSuccess() { } public void onFailure(int reason) { Log.e(LOG_TAG, "connect failed " + reason); } }); break; } } } if (foundApInScanResults) { return true; } else { // Start an active scan mWifiManager.startScan(); mScanResultIsAvailable = false; long startTime = System.currentTimeMillis(); while (!mScanResultIsAvailable) { if ((System.currentTimeMillis() - startTime) > WIFI_SCAN_TIMEOUT) { Log.v(LOG_TAG, "wait for scan results timeout"); return false; } // wait for the scan results to be available synchronized (this) { // wait for the scan result to be available try { this.wait(WAIT_FOR_SCAN_RESULT); } catch (InterruptedException e) { e.printStackTrace(); } if ((mWifiManager.getScanResults() == null) || (mWifiManager.getScanResults().size() <= 0)) { continue; } mScanResultIsAvailable = true; } } } } return false; } /* * Disconnect from the current AP and remove configured networks. */ public boolean disconnectAP() { // remove saved networks List wifiConfigList = mWifiManager.getConfiguredNetworks(); Log.v(LOG_TAG, "size of wifiConfigList: " + wifiConfigList.size()); for (WifiConfiguration wifiConfig: wifiConfigList) { Log.v(LOG_TAG, "Remove wifi configuration: " + wifiConfig.networkId); int netId = wifiConfig.networkId; mWifiManager.forget(netId, new WifiManager.ActionListener() { public void onSuccess() { } public void onFailure(int reason) { Log.e(LOG_TAG, "forget failed " + reason); } }); } return true; } /** * Enable Wifi * @return true if Wifi is enabled successfully */ public boolean enableWifi() { return mWifiManager.setWifiEnabled(true); } /** * Disable Wifi * @return true if Wifi is disabled successfully */ public boolean disableWifi() { return mWifiManager.setWifiEnabled(false); } /** * Remove configured networks and disable wifi */ public boolean removeConfiguredNetworksAndDisableWifi() { if (!disconnectAP()) { return false; } sleep(SHORT_TIMEOUT); if (!mWifiManager.setWifiEnabled(false)) { return false; } sleep(SHORT_TIMEOUT); return true; } /** * Make the current thread sleep. * @param sleeptime the time to sleep in milliseconds */ private void sleep(long sleeptime) { try { Thread.sleep(sleeptime); } catch (InterruptedException e) {} } /** * Set airplane mode on device, caller is responsible to ensuring correct state. * @param context {@link Context} * @param enableAM to enable or disable airplane mode. */ public void setAirplaneMode(Context context, boolean enableAM) { //set the airplane mode Settings.System.putInt(context.getContentResolver(), Settings.System.AIRPLANE_MODE_ON, enableAM ? 1 : 0); // Post the intent Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); intent.putExtra("state", enableAM); context.sendBroadcast(intent); } /** * Add quotes around the string. * @param string to convert * @return string with quotes around it */ protected static String convertToQuotedString(String string) { return "\"" + string + "\""; } public void cleanUp() { // Unregister receivers if defined. if (mConnectivityReceiver != null) { mContext.unregisterReceiver(mConnectivityReceiver); } if (mWifiReceiver != null) { mContext.unregisterReceiver(mWifiReceiver); } if (mDownloadReceiver != null) { mContext.unregisterReceiver(mDownloadReceiver); } Log.v(LOG_TAG, "onDestroy, inst=" + Integer.toHexString(hashCode())); } /** * Helper method used to test data connectivity by pinging a series of popular sites. * @return true if device has data connectivity, false otherwise. */ public boolean hasData() { String[] hostList = {"www.google.com", "www.yahoo.com", "www.bing.com", "www.facebook.com", "www.ask.com"}; try { for (int i = 0; i < hostList.length; ++i) { String host = hostList[i]; Process p = Runtime.getRuntime().exec("ping -c 10 -w 100 " + host); int status = p.waitFor(); if (status == 0) { return true; } } } catch (UnknownHostException e) { Log.e(LOG_TAG, "Ping test Failed: Unknown Host"); } catch (IOException e) { Log.e(LOG_TAG, "Ping test Failed: IOException"); } catch (InterruptedException e) { Log.e(LOG_TAG, "Ping test Failed: InterruptedException"); } return false; } }