Backup and restore IP and proxy settings (4aeca7c5) · Commits · e / os / android_frameworks_base

packages/SettingsProvider/src/com/android/providers/settings/SettingsBackupAgent.java

+91 −15

Original line number	Diff line number	Diff line
		@@ -27,6 +27,7 @@ import java.io.FileInputStream;
		import java.io.FileOutputStream;
		import java.io.FileReader;
		import java.io.FileWriter;
		import java.io.InputStream;
		import java.io.IOException;
		import java.io.OutputStream;
		import java.util.Arrays;
		@@ -58,15 +59,20 @@ public class SettingsBackupAgent extends BackupAgentHelper {
		private static final String KEY_SECURE = "secure";
		private static final String KEY_LOCALE = "locale";

		//Version 2 adds STATE_WIFI_CONFIG
		private static final int STATE_VERSION_1 = 1;
		private static final int STATE_VERSION_1_SIZE = 4;

		// Versioning of the state file. Increment this version
		// number any time the set of state items is altered.
		private static final int STATE_VERSION = 1;
		private static final int STATE_VERSION = 2;

		private static final int STATE_SYSTEM = 0;
		private static final int STATE_SECURE = 1;
		private static final int STATE_LOCALE = 2;
		private static final int STATE_WIFI = 3;
		private static final int STATE_SIZE = 4; // The number of state items
		private static final int STATE_WIFI_SUPPLICANT = 3;
		private static final int STATE_WIFI_CONFIG = 4;
		private static final int STATE_SIZE = 5; // The number of state items

		private static String[] sortedSystemKeys = null;
		private static String[] sortedSecureKeys = null;
		@@ -91,12 +97,18 @@ public class SettingsBackupAgent extends BackupAgentHelper {
		// the key to store the WIFI data under, should be sorted as last, so restore happens last.
		// use very late unicode character to quasi-guarantee last sort position.
		private static final String KEY_WIFI_SUPPLICANT = "\uffedWIFI";
		private static final String KEY_WIFI_CONFIG = "\uffedCONFIG_WIFI";

		private SettingsHelper mSettingsHelper;
		private WifiManager mWfm;
		private static String mWifiConfigFile;

		public void onCreate() {
		mSettingsHelper = new SettingsHelper(this);
		super.onCreate();

		WifiManager mWfm = (WifiManager) getSystemService(Context.WIFI_SERVICE);
		if (mWfm != null) mWifiConfigFile = mWfm.getConfigFile();
		}

		@Override
		@@ -106,7 +118,8 @@ public class SettingsBackupAgent extends BackupAgentHelper {
		byte[] systemSettingsData = getSystemSettings();
		byte[] secureSettingsData = getSecureSettings();
		byte[] locale = mSettingsHelper.getLocaleData();
		byte[] wifiData = getWifiSupplicant(FILE_WIFI_SUPPLICANT);
		byte[] wifiSupplicantData = getWifiSupplicant(FILE_WIFI_SUPPLICANT);
		byte[] wifiConfigData = getFileData(mWifiConfigFile);

		long[] stateChecksums = readOldChecksums(oldState);

		@@ -116,8 +129,12 @@ public class SettingsBackupAgent extends BackupAgentHelper {
		writeIfChanged(stateChecksums[STATE_SECURE], KEY_SECURE, secureSettingsData, data);
		stateChecksums[STATE_LOCALE] =
		writeIfChanged(stateChecksums[STATE_LOCALE], KEY_LOCALE, locale, data);
		stateChecksums[STATE_WIFI] =
		writeIfChanged(stateChecksums[STATE_WIFI], KEY_WIFI_SUPPLICANT, wifiData, data);
		stateChecksums[STATE_WIFI_SUPPLICANT] =
		writeIfChanged(stateChecksums[STATE_WIFI_SUPPLICANT], KEY_WIFI_SUPPLICANT,
		wifiSupplicantData, data);
		stateChecksums[STATE_WIFI_CONFIG] =
		writeIfChanged(stateChecksums[STATE_WIFI_CONFIG], KEY_WIFI_CONFIG, wifiConfigData,
		data);

		writeNewChecksums(stateChecksums, newState);
		}
		@@ -148,6 +165,8 @@ public class SettingsBackupAgent extends BackupAgentHelper {
		byte[] localeData = new byte[size];
		data.readEntityData(localeData, 0, size);
		mSettingsHelper.setLocaleData(localeData);
		} else if (KEY_WIFI_CONFIG.equals(key)) {
		restoreFileData(mWifiConfigFile, data);
		} else {
		data.skipEntityData();
		}
		@@ -162,7 +181,11 @@ public class SettingsBackupAgent extends BackupAgentHelper {

		try {
		int stateVersion = dataInput.readInt();
		if (stateVersion == STATE_VERSION) {
		if (stateVersion == STATE_VERSION_1) {
		for (int i = 0; i < STATE_VERSION_1_SIZE; i++) {
		stateChecksums[i] = dataInput.readLong();
		}
		} else if (stateVersion == STATE_VERSION) {
		for (int i = 0; i < STATE_SIZE; i++) {
		stateChecksums[i] = dataInput.readLong();
		}
		@@ -353,6 +376,60 @@ public class SettingsBackupAgent extends BackupAgentHelper {
		return result;
		}

		private byte[] getFileData(String filename) {
		InputStream is = null;
		try {
		File file = new File(filename);
		is = new FileInputStream(file);

		//Will truncate read on a very long file,
		//should not happen for a config file
		byte[] bytes = new byte[(int)file.length()];

		int offset = 0;
		int numRead = 0;
		while (offset < bytes.length
		&& (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) {
		offset += numRead;
		}

		//read failure
		if (offset < bytes.length) {
		Log.w(TAG, "Couldn't backup " + filename);
		return EMPTY_DATA;
		}
		return bytes;
		} catch (IOException ioe) {
		Log.w(TAG, "Couldn't backup " + filename);
		return EMPTY_DATA;
		} finally {
		if (is != null) {
		try {
		is.close();
		} catch (IOException e) {
		}
		}
		}

		}

		private void restoreFileData(String filename, BackupDataInput data) {
		byte[] bytes = new byte[data.getDataSize()];
		if (bytes.length <= 0) return;
		try {
		data.readEntityData(bytes, 0, bytes.length);
		File file = new File(filename);
		if (file.exists()) file.delete();

		OutputStream os = new BufferedOutputStream(new FileOutputStream(filename, true));
		os.write(bytes);
		os.close();
		} catch (IOException ioe) {
		Log.w(TAG, "Couldn't restore " + filename);
		}
		}


		private byte[] getWifiSupplicant(String filename) {
		BufferedReader br = null;
		try {
		@@ -455,10 +532,9 @@ public class SettingsBackupAgent extends BackupAgentHelper {
		}

		private int enableWifi(boolean enable) {
		WifiManager wfm = (WifiManager) getSystemService(Context.WIFI_SERVICE);
		if (wfm != null) {
		int state = wfm.getWifiState();
		wfm.setWifiEnabled(enable);
		if (mWfm != null) {
		int state = mWfm.getWifiState();
		mWfm.setWifiEnabled(enable);
		return state;
		}
		return WifiManager.WIFI_STATE_UNKNOWN;

services/java/com/android/server/WifiService.java

+10 −4

Original line number	Diff line number	Diff line
		@@ -29,12 +29,12 @@ import android.content.IntentFilter;
		import android.content.pm.PackageManager;
		import android.database.ContentObserver;
		import android.net.wifi.IWifiManager;
		import android.net.wifi.ScanResult;
		import android.net.wifi.SupplicantState;
		import android.net.wifi.WifiInfo;
		import android.net.wifi.WifiManager;
		import android.net.wifi.WifiStateMachine;
		import android.net.wifi.ScanResult;
		import android.net.wifi.WifiConfiguration;
		import android.net.wifi.SupplicantState;
		import android.net.wifi.WifiConfiguration.KeyMgmt;
		import android.net.wifi.WpsConfiguration;
		import android.net.wifi.WpsResult;
		@@ -882,8 +882,6 @@ public class WifiService extends IWifiManager.Stub {
		mWifiStateMachine.clearBlacklist();
		}



		/**
		* Get a reference to handler. This is used by a client to establish
		* an AsyncChannel communication with WifiService
		@@ -898,6 +896,14 @@ public class WifiService extends IWifiManager.Stub {
		return new Messenger(mAsyncServiceHandler);
		}

		/**
		* Get the IP and proxy configuration file
		*/
		public String getConfigFile() {
		enforceAccessPermission();
		return mWifiStateMachine.getConfigFile();
		}

		private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
		@Override
		public void onReceive(Context context, Intent intent) {

wifi/java/android/net/wifi/IWifiManager.aidl

+2 −0

Original line number	Diff line number	Diff line
		@@ -104,5 +104,7 @@ interface IWifiManager
		void clearBlacklist();

		Messenger getMessenger();

		String getConfigFile();
		}

wifi/java/android/net/wifi/WifiConfigStore.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -1347,4 +1347,8 @@ class WifiConfigStore {
		}
		return sb.toString();
		}

		public static String getConfigFile() {
		return ipConfigFile;
		}
		}

wifi/java/android/net/wifi/WifiManager.java

+12 −0

Original line number	Diff line number	Diff line
		@@ -1175,6 +1175,18 @@ public class WifiManager {
		}
		}

		/**
		* Returns the file in which IP and proxy configuration data is stored
		* @hide
		*/
		public String getConfigFile() {
		try {
		return mService.getConfigFile();
		} catch (RemoteException e) {
		return null;
		}
		}

		/**
		* Allows an application to keep the Wi-Fi radio awake.
		* Normally the Wi-Fi radio may turn off when the user has not used the device in a while.