| /* |
| * Copyright (C) 2007 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; |
| |
| import android.app.PendingIntent; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.res.Resources; |
| import android.content.pm.PackageManager; |
| import android.net.Uri; |
| import android.net.InterfaceConfiguration; |
| import android.net.INetworkManagementEventObserver; |
| import android.net.wifi.WifiConfiguration; |
| import android.net.wifi.WifiConfiguration.KeyMgmt; |
| import android.os.INetworkManagementService; |
| import android.os.Handler; |
| import android.os.SystemProperties; |
| import android.text.TextUtils; |
| import android.util.Log; |
| import android.util.Slog; |
| import java.util.ArrayList; |
| import java.util.StringTokenizer; |
| import android.provider.Settings; |
| import android.content.ContentResolver; |
| import android.database.ContentObserver; |
| |
| import java.io.File; |
| import java.io.FileReader; |
| import java.lang.IllegalStateException; |
| |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| |
| /** |
| * @hide |
| */ |
| class NetworkManagementService extends INetworkManagementService.Stub { |
| |
| private static final String TAG = "NetworkManagmentService"; |
| |
| class NetdResponseCode { |
| public static final int InterfaceListResult = 110; |
| public static final int TetherInterfaceListResult = 111; |
| public static final int TetherDnsFwdTgtListResult = 112; |
| public static final int TtyListResult = 113; |
| |
| public static final int TetherStatusResult = 210; |
| public static final int IpFwdStatusResult = 211; |
| public static final int InterfaceGetCfgResult = 213; |
| public static final int SoftapStatusResult = 214; |
| public static final int UsbRNDISStatusResult = 215; |
| |
| public static final int InterfaceChange = 600; |
| } |
| |
| /** |
| * Binder context for this service |
| */ |
| private Context mContext; |
| |
| /** |
| * connector object for communicating with netd |
| */ |
| private NativeDaemonConnector mConnector; |
| |
| private ArrayList<INetworkManagementEventObserver> mObservers; |
| |
| /** |
| * Constructs a new NetworkManagementService instance |
| * |
| * @param context Binder context for this service |
| */ |
| public NetworkManagementService(Context context) { |
| mContext = context; |
| |
| mObservers = new ArrayList<INetworkManagementEventObserver>(); |
| |
| if ("simulator".equals(SystemProperties.get("ro.product.device"))) { |
| return; |
| } |
| |
| mConnector = new NativeDaemonConnector( |
| new NetdCallbackReceiver(), "netd", 10, "NetdConnector"); |
| Thread thread = new Thread(mConnector, NativeDaemonConnector.class.getName()); |
| thread.start(); |
| } |
| |
| public void registerObserver(INetworkManagementEventObserver obs) { |
| Slog.d(TAG, "Registering observer"); |
| mObservers.add(obs); |
| } |
| |
| public void unregisterObserver(INetworkManagementEventObserver obs) { |
| Slog.d(TAG, "Unregistering observer"); |
| mObservers.remove(mObservers.indexOf(obs)); |
| } |
| |
| /** |
| * Notify our observers of an interface link status change |
| */ |
| private void notifyInterfaceLinkStatusChanged(String iface, boolean link) { |
| for (INetworkManagementEventObserver obs : mObservers) { |
| try { |
| obs.interfaceLinkStatusChanged(iface, link); |
| } catch (Exception ex) { |
| Slog.w(TAG, "Observer notifier failed", ex); |
| } |
| } |
| } |
| |
| /** |
| * Notify our observers of an interface addition. |
| */ |
| private void notifyInterfaceAdded(String iface) { |
| for (INetworkManagementEventObserver obs : mObservers) { |
| try { |
| obs.interfaceAdded(iface); |
| } catch (Exception ex) { |
| Slog.w(TAG, "Observer notifier failed", ex); |
| } |
| } |
| } |
| |
| /** |
| * Notify our observers of an interface removal. |
| */ |
| private void notifyInterfaceRemoved(String iface) { |
| for (INetworkManagementEventObserver obs : mObservers) { |
| try { |
| obs.interfaceRemoved(iface); |
| } catch (Exception ex) { |
| Slog.w(TAG, "Observer notifier failed", ex); |
| } |
| } |
| } |
| |
| |
| // |
| // Netd Callback handling |
| // |
| |
| class NetdCallbackReceiver implements INativeDaemonConnectorCallbacks { |
| public void onDaemonConnected() { |
| new Thread() { |
| public void run() { |
| } |
| }.start(); |
| } |
| public boolean onEvent(int code, String raw, String[] cooked) { |
| if (code == NetdResponseCode.InterfaceChange) { |
| /* |
| * a network interface change occured |
| * Format: "NNN Iface added <name>" |
| * "NNN Iface removed <name>" |
| * "NNN Iface changed <name> <up/down>" |
| */ |
| if (cooked.length < 4 || !cooked[1].equals("Iface")) { |
| throw new IllegalStateException( |
| String.format("Invalid event from daemon (%s)", raw)); |
| } |
| if (cooked[2].equals("added")) { |
| notifyInterfaceAdded(cooked[3]); |
| return true; |
| } else if (cooked[2].equals("removed")) { |
| notifyInterfaceRemoved(cooked[3]); |
| return true; |
| } else if (cooked[2].equals("changed") && cooked.length == 5) { |
| notifyInterfaceLinkStatusChanged(cooked[3], cooked[4].equals("up")); |
| return true; |
| } |
| throw new IllegalStateException( |
| String.format("Invalid event from daemon (%s)", raw)); |
| } |
| return false; |
| } |
| } |
| |
| private static int stringToIpAddr(String addrString) throws UnknownHostException { |
| try { |
| String[] parts = addrString.split("\\."); |
| if (parts.length != 4) { |
| throw new UnknownHostException(addrString); |
| } |
| |
| int a = Integer.parseInt(parts[0]) ; |
| int b = Integer.parseInt(parts[1]) << 8; |
| int c = Integer.parseInt(parts[2]) << 16; |
| int d = Integer.parseInt(parts[3]) << 24; |
| |
| return a | b | c | d; |
| } catch (NumberFormatException ex) { |
| throw new UnknownHostException(addrString); |
| } |
| } |
| |
| public static String intToIpString(int i) { |
| return ((i >> 24 ) & 0xFF) + "." + ((i >> 16 ) & 0xFF) + "." + ((i >> 8 ) & 0xFF) + "." + |
| (i & 0xFF); |
| } |
| |
| // |
| // INetworkManagementService members |
| // |
| |
| public String[] listInterfaces() throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.ACCESS_NETWORK_STATE, "NetworkManagementService"); |
| |
| return mConnector.doListCommand("interface list", NetdResponseCode.InterfaceListResult); |
| } |
| |
| public InterfaceConfiguration getInterfaceConfig(String iface) throws IllegalStateException { |
| String rsp = mConnector.doCommand("interface getcfg " + iface).get(0); |
| Slog.d(TAG, String.format("rsp <%s>", rsp)); |
| |
| // Rsp: 213 xx:xx:xx:xx:xx:xx yyy.yyy.yyy.yyy zzz.zzz.zzz.zzz [flag1 flag2 flag3] |
| StringTokenizer st = new StringTokenizer(rsp); |
| |
| try { |
| int code = Integer.parseInt(st.nextToken(" ")); |
| if (code != NetdResponseCode.InterfaceGetCfgResult) { |
| throw new IllegalStateException( |
| String.format("Expected code %d, but got %d", |
| NetdResponseCode.InterfaceGetCfgResult, code)); |
| } |
| } catch (NumberFormatException nfe) { |
| throw new IllegalStateException( |
| String.format("Invalid response from daemon (%s)", rsp)); |
| } |
| |
| InterfaceConfiguration cfg = new InterfaceConfiguration(); |
| cfg.hwAddr = st.nextToken(" "); |
| try { |
| cfg.ipAddr = stringToIpAddr(st.nextToken(" ")); |
| } catch (UnknownHostException uhe) { |
| Slog.e(TAG, "Failed to parse ipaddr", uhe); |
| cfg.ipAddr = 0; |
| } |
| |
| try { |
| cfg.netmask = stringToIpAddr(st.nextToken(" ")); |
| } catch (UnknownHostException uhe) { |
| Slog.e(TAG, "Failed to parse netmask", uhe); |
| cfg.netmask = 0; |
| } |
| cfg.interfaceFlags = st.nextToken("]").trim() +"]"; |
| Slog.d(TAG, String.format("flags <%s>", cfg.interfaceFlags)); |
| return cfg; |
| } |
| |
| public void setInterfaceConfig( |
| String iface, InterfaceConfiguration cfg) throws IllegalStateException { |
| String cmd = String.format("interface setcfg %s %s %s %s", iface, |
| intToIpString(cfg.ipAddr), intToIpString(cfg.netmask), cfg.interfaceFlags); |
| mConnector.doCommand(cmd); |
| } |
| |
| public void shutdown() { |
| if (mContext.checkCallingOrSelfPermission( |
| android.Manifest.permission.SHUTDOWN) |
| != PackageManager.PERMISSION_GRANTED) { |
| throw new SecurityException("Requires SHUTDOWN permission"); |
| } |
| |
| Slog.d(TAG, "Shutting down"); |
| } |
| |
| public boolean getIpForwardingEnabled() throws IllegalStateException{ |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.ACCESS_NETWORK_STATE, "NetworkManagementService"); |
| |
| ArrayList<String> rsp = mConnector.doCommand("ipfwd status"); |
| |
| for (String line : rsp) { |
| String []tok = line.split(" "); |
| int code = Integer.parseInt(tok[0]); |
| if (code == NetdResponseCode.IpFwdStatusResult) { |
| // 211 Forwarding <enabled/disabled> |
| if (tok.length !=2) { |
| throw new IllegalStateException( |
| String.format("Malformatted list entry '%s'", line)); |
| } |
| if (tok[2].equals("enabled")) |
| return true; |
| return false; |
| } else { |
| throw new IllegalStateException(String.format("Unexpected response code %d", code)); |
| } |
| } |
| throw new IllegalStateException("Got an empty response"); |
| } |
| |
| public void setIpForwardingEnabled(boolean enable) throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand(String.format("ipfwd %sable", (enable ? "en" : "dis"))); |
| } |
| |
| public void startTethering(String dhcpRangeStart, String dhcpRangeEnd) |
| throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand(String.format("tether start %s %s", dhcpRangeStart, dhcpRangeEnd)); |
| } |
| |
| public void stopTethering() throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand("tether stop"); |
| } |
| |
| public boolean isTetheringStarted() throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.ACCESS_NETWORK_STATE, "NetworkManagementService"); |
| |
| ArrayList<String> rsp = mConnector.doCommand("tether status"); |
| |
| for (String line : rsp) { |
| String []tok = line.split(" "); |
| int code = Integer.parseInt(tok[0]); |
| if (code == NetdResponseCode.TetherStatusResult) { |
| // XXX: Tethering services <started/stopped> <TBD>... |
| if (tok[2].equals("started")) |
| return true; |
| return false; |
| } else { |
| throw new IllegalStateException(String.format("Unexpected response code %d", code)); |
| } |
| } |
| throw new IllegalStateException("Got an empty response"); |
| } |
| |
| public void tetherInterface(String iface) throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand("tether interface add " + iface); |
| } |
| |
| public void untetherInterface(String iface) { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand("tether interface remove " + iface); |
| } |
| |
| public String[] listTetheredInterfaces() throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.ACCESS_NETWORK_STATE, "NetworkManagementService"); |
| return mConnector.doListCommand( |
| "tether interface list", NetdResponseCode.TetherInterfaceListResult); |
| } |
| |
| public void setDnsForwarders(String[] dns) throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| try { |
| String cmd = "tether dns set"; |
| for (String s : dns) { |
| cmd += " " + InetAddress.getByName(s).getHostAddress(); |
| } |
| mConnector.doCommand(cmd); |
| } catch (UnknownHostException e) { |
| throw new IllegalStateException("Error resolving dns name", e); |
| } |
| } |
| |
| public String[] getDnsForwarders() throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.ACCESS_NETWORK_STATE, "NetworkManagementService"); |
| return mConnector.doListCommand( |
| "tether dns list", NetdResponseCode.TetherDnsFwdTgtListResult); |
| } |
| |
| public void enableNat(String internalInterface, String externalInterface) |
| throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand( |
| String.format("nat enable %s %s", internalInterface, externalInterface)); |
| } |
| |
| public void disableNat(String internalInterface, String externalInterface) |
| throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand( |
| String.format("nat disable %s %s", internalInterface, externalInterface)); |
| } |
| |
| public String[] listTtys() throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.ACCESS_NETWORK_STATE, "NetworkManagementService"); |
| return mConnector.doListCommand("list_ttys", NetdResponseCode.TtyListResult); |
| } |
| |
| public void attachPppd(String tty, String localAddr, String remoteAddr, String dns1Addr, |
| String dns2Addr) throws IllegalStateException { |
| try { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand(String.format("pppd attach %s %s %s %s %s", tty, |
| InetAddress.getByName(localAddr).getHostAddress(), |
| InetAddress.getByName(remoteAddr).getHostAddress(), |
| InetAddress.getByName(dns1Addr).getHostAddress(), |
| InetAddress.getByName(dns2Addr).getHostAddress())); |
| } catch (UnknownHostException e) { |
| throw new IllegalStateException("Error resolving addr", e); |
| } |
| } |
| |
| public void detachPppd(String tty) throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand(String.format("pppd detach %s", tty)); |
| } |
| |
| public void startUsbRNDIS() throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand("usb startrndis"); |
| } |
| |
| public void stopUsbRNDIS() throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mConnector.doCommand("usb stoprndis"); |
| } |
| |
| public boolean isUsbRNDISStarted() throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.ACCESS_NETWORK_STATE, "NetworkManagementService"); |
| ArrayList<String> rsp = mConnector.doCommand("usb rndisstatus"); |
| |
| for (String line : rsp) { |
| String []tok = line.split(" "); |
| int code = Integer.parseInt(tok[0]); |
| if (code == NetdResponseCode.UsbRNDISStatusResult) { |
| if (tok[3].equals("started")) |
| return true; |
| return false; |
| } else { |
| throw new IllegalStateException(String.format("Unexpected response code %d", code)); |
| } |
| } |
| throw new IllegalStateException("Got an empty response"); |
| } |
| |
| public void startAccessPoint(WifiConfiguration wifiConfig, String intf) |
| throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_WIFI_STATE, "NetworkManagementService"); |
| mConnector.doCommand(String.format("softap stop " + intf)); |
| mConnector.doCommand(String.format("softap fwreload " + intf + " AP")); |
| mConnector.doCommand(String.format("softap start " + intf)); |
| if (wifiConfig == null) { |
| mConnector.doCommand(String.format("softap set " + intf + " wl0.1")); |
| } else { |
| /** |
| * softap set arg1 arg2 arg3 [arg4 arg5 arg6 arg7 arg8] |
| * argv1 - wlan interface |
| * argv2 - softap interface |
| * argv3 - SSID |
| * argv4 - Security |
| * argv5 - Key |
| * argv6 - Channel |
| * argv7 - Preamble |
| * argv8 - Max SCB |
| * |
| * TODO: get a configurable softap interface from driver |
| */ |
| String str = String.format("softap set " + intf + " wl0.1 %s %s %s", wifiConfig.SSID, |
| wifiConfig.allowedKeyManagement.get(KeyMgmt.WPA_PSK) ? |
| "wpa2-psk" : "open", |
| wifiConfig.preSharedKey); |
| mConnector.doCommand(str); |
| } |
| mConnector.doCommand(String.format("softap startap")); |
| } |
| |
| public void stopAccessPoint() throws IllegalStateException { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService"); |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CHANGE_WIFI_STATE, "NetworkManagementService"); |
| mConnector.doCommand("softap stopap"); |
| } |
| |
| } |