summaryrefslogtreecommitdiff
path: root/service/java/com/android/server/wifi/SoftApBackupRestore.java
diff options
context:
space:
mode:
Diffstat (limited to 'service/java/com/android/server/wifi/SoftApBackupRestore.java')
-rw-r--r--service/java/com/android/server/wifi/SoftApBackupRestore.java210
1 files changed, 0 insertions, 210 deletions
diff --git a/service/java/com/android/server/wifi/SoftApBackupRestore.java b/service/java/com/android/server/wifi/SoftApBackupRestore.java
deleted file mode 100644
index 441321cd3..000000000
--- a/service/java/com/android/server/wifi/SoftApBackupRestore.java
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- * Copyright (C) 2019 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.wifi;
-
-import android.content.Context;
-import android.net.MacAddress;
-import android.net.wifi.SoftApConfiguration;
-import android.net.wifi.WifiConfiguration;
-import android.net.wifi.WifiMigration;
-import android.util.BackupUtils;
-import android.util.Log;
-
-import com.android.server.wifi.util.ApConfigUtil;
-import com.android.server.wifi.util.SettingsMigrationDataHolder;
-
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-
-/**
- * Class used to backup/restore data using the SettingsBackupAgent.
- * There are 2 symmetric API's exposed here:
- * 1. retrieveBackupDataFromSoftApConfiguration: Retrieve the configuration data to be backed up.
- * 2. retrieveSoftApConfigurationFromBackupData: Restore the configuration using the provided data.
- * The byte stream to be backed up is versioned to migrate the data easily across
- * revisions.
- */
-public class SoftApBackupRestore {
- private static final String TAG = "SoftApBackupRestore";
-
- /**
- * Current backup data version.
- */
- private static final int CURRENT_SAP_BACKUP_DATA_VERSION = 7;
-
- private static final int ETHER_ADDR_LEN = 6; // Byte array size of MacAddress
-
- private final Context mContext;
- private final SettingsMigrationDataHolder mSettingsMigrationDataHolder;
-
- public SoftApBackupRestore(Context context,
- SettingsMigrationDataHolder settingsMigrationDataHolder) {
- mContext = context;
- mSettingsMigrationDataHolder = settingsMigrationDataHolder;
- }
-
- /**
- * Retrieve a byte stream representing the data that needs to be backed up from the
- * provided softap configuration.
- *
- * @param config saved soft ap config that needs to be backed up.
- * @return Raw byte stream that needs to be backed up.
- */
- public byte[] retrieveBackupDataFromSoftApConfiguration(SoftApConfiguration config) {
- if (config == null) {
- Log.e(TAG, "Invalid configuration received");
- return new byte[0];
- }
- ByteArrayOutputStream baos = new ByteArrayOutputStream();
- try {
- DataOutputStream out = new DataOutputStream(baos);
-
- out.writeInt(CURRENT_SAP_BACKUP_DATA_VERSION);
- BackupUtils.writeString(out, config.getSsid());
- out.writeInt(config.getBand());
- out.writeInt(config.getChannel());
- BackupUtils.writeString(out, config.getPassphrase());
- out.writeInt(config.getSecurityType());
- out.writeBoolean(config.isHiddenSsid());
- out.writeInt(config.getMaxNumberOfClients());
- out.writeLong(config.getShutdownTimeoutMillis());
- out.writeBoolean(config.isClientControlByUserEnabled());
- writeMacAddressList(out, config.getBlockedClientList());
- writeMacAddressList(out, config.getAllowedClientList());
- out.writeBoolean(config.isAutoShutdownEnabled());
- } catch (IOException io) {
- Log.e(TAG, "Invalid configuration received, IOException " + io);
- return new byte[0];
- }
- return baos.toByteArray();
- }
-
- /**
- * Parse out the configurations from the back up data.
- *
- * @param data raw byte stream representing the data.
- * @return Soft ap config retrieved from the backed up data.
- */
- public SoftApConfiguration retrieveSoftApConfigurationFromBackupData(byte[] data) {
- if (data == null || data.length == 0) {
- Log.e(TAG, "Invalid backup data received");
- return null;
- }
- SoftApConfiguration.Builder configBuilder = new SoftApConfiguration.Builder();
- try {
- DataInputStream in = new DataInputStream(new ByteArrayInputStream(data));
- int version = in.readInt();
- if (version < 1 || version > CURRENT_SAP_BACKUP_DATA_VERSION) {
- throw new BackupUtils.BadVersionException("Unknown Backup Serialization Version");
- }
-
- if (version == 1) return null; // Version 1 is a bad dataset.
-
- configBuilder.setSsid(BackupUtils.readString(in));
-
- int band;
- if (version < 4) {
- band = ApConfigUtil.convertWifiConfigBandToSoftApConfigBand(in.readInt());
- } else {
- band = in.readInt();
- }
- int channel = in.readInt();
-
- if (channel == 0) {
- configBuilder.setBand(band);
- } else {
- configBuilder.setChannel(channel, band);
- }
- String passphrase = BackupUtils.readString(in);
- int securityType = in.readInt();
- if (version < 4 && securityType == WifiConfiguration.KeyMgmt.WPA2_PSK) {
- configBuilder.setPassphrase(passphrase, SoftApConfiguration.SECURITY_TYPE_WPA2_PSK);
- } else if (version >= 4 && securityType != SoftApConfiguration.SECURITY_TYPE_OPEN) {
- configBuilder.setPassphrase(passphrase, securityType);
- }
- if (version >= 3) {
- configBuilder.setHiddenSsid(in.readBoolean());
- }
- if (version >= 5) {
- configBuilder.setMaxNumberOfClients(in.readInt());
- if (version >= 7) {
- configBuilder.setShutdownTimeoutMillis(in.readLong());
- } else {
- configBuilder.setShutdownTimeoutMillis(Long.valueOf(in.readInt()));
- }
- configBuilder.setClientControlByUserEnabled(in.readBoolean());
- int numberOfBlockedClient = in.readInt();
- List<MacAddress> blockedList = new ArrayList<>(
- macAddressListFromByteArray(in, numberOfBlockedClient));
- int numberOfAllowedClient = in.readInt();
- List<MacAddress> allowedList = new ArrayList<>(
- macAddressListFromByteArray(in, numberOfAllowedClient));
- configBuilder.setBlockedClientList(blockedList);
- configBuilder.setAllowedClientList(allowedList);
- }
- if (version >= 6) {
- configBuilder.setAutoShutdownEnabled(in.readBoolean());
- } else {
- // Migrate data out of settings.
- WifiMigration.SettingsMigrationData migrationData =
- mSettingsMigrationDataHolder.retrieveData();
- if (migrationData == null) {
- Log.e(TAG, "No migration data present");
- } else {
- configBuilder.setAutoShutdownEnabled(migrationData.isSoftApTimeoutEnabled());
- }
- }
- } catch (IOException io) {
- Log.e(TAG, "Invalid backup data received, IOException: " + io);
- return null;
- } catch (BackupUtils.BadVersionException badVersion) {
- Log.e(TAG, "Invalid backup data received, BadVersionException: " + badVersion);
- return null;
- } catch (IllegalArgumentException ie) {
- Log.e(TAG, "Invalid backup data received, IllegalArgumentException " + ie);
- return null;
- }
- return configBuilder.build();
- }
-
- private void writeMacAddressList(DataOutputStream out, List<MacAddress> macList)
- throws IOException {
- out.writeInt(macList.size());
- Iterator<MacAddress> iterator = macList.iterator();
- while (iterator.hasNext()) {
- byte[] mac = iterator.next().toByteArray();
- out.write(mac, 0, ETHER_ADDR_LEN);
- }
- }
-
- private List<MacAddress> macAddressListFromByteArray(DataInputStream in, int numberOfClients)
- throws IOException {
- List<MacAddress> macList = new ArrayList<>();
- for (int i = 0; i < numberOfClients; i++) {
- byte[] mac = new byte[ETHER_ADDR_LEN];
- in.read(mac, 0, ETHER_ADDR_LEN);
- macList.add(MacAddress.fromBytes(mac));
- }
- return macList;
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-08 04:04:25 +0000