| /* |
| * Copyright (C) 2008 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 android.net; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.RemoteException; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Message; |
| import android.os.ServiceManager; |
| import com.android.internal.telephony.ITelephony; |
| import com.android.internal.telephony.Phone; |
| import com.android.internal.telephony.TelephonyIntents; |
| import android.net.NetworkInfo.DetailedState; |
| import android.net.NetworkInfo; |
| import android.net.LinkProperties; |
| import android.telephony.TelephonyManager; |
| import android.util.Log; |
| import android.text.TextUtils; |
| |
| /** |
| * Track the state of mobile data connectivity. This is done by |
| * receiving broadcast intents from the Phone process whenever |
| * the state of data connectivity changes. |
| * |
| * {@hide} |
| */ |
| public class MobileDataStateTracker implements NetworkStateTracker { |
| |
| private static final String TAG = "MobileDataStateTracker"; |
| private static final boolean DBG = true; |
| |
| private Phone.DataState mMobileDataState; |
| private ITelephony mPhoneService; |
| |
| private String mApnType; |
| private static String[] sDnsPropNames; |
| private NetworkInfo mNetworkInfo; |
| private boolean mTeardownRequested = false; |
| private Handler mTarget; |
| private Context mContext; |
| private LinkProperties mLinkProperties; |
| private LinkCapabilities mLinkCapabilities; |
| private boolean mPrivateDnsRouteSet = false; |
| private int mDefaultGatewayAddr = 0; |
| private boolean mDefaultRouteSet = false; |
| |
| // DEFAULT and HIPRI are the same connection. If we're one of these we need to check if |
| // the other is also disconnected before we reset sockets |
| private boolean mIsDefaultOrHipri = false; |
| |
| /** |
| * Create a new MobileDataStateTracker |
| * @param netType the ConnectivityManager network type |
| * @param tag the name of this network |
| */ |
| public MobileDataStateTracker(int netType, String tag) { |
| mNetworkInfo = new NetworkInfo(netType, |
| TelephonyManager.getDefault().getNetworkType(), tag, |
| TelephonyManager.getDefault().getNetworkTypeName()); |
| mApnType = networkTypeToApnType(netType); |
| if (netType == ConnectivityManager.TYPE_MOBILE || |
| netType == ConnectivityManager.TYPE_MOBILE_HIPRI) { |
| mIsDefaultOrHipri = true; |
| } |
| |
| mPhoneService = null; |
| |
| sDnsPropNames = new String[] { |
| "net.rmnet0.dns1", |
| "net.rmnet0.dns2", |
| "net.eth0.dns1", |
| "net.eth0.dns2", |
| "net.eth0.dns3", |
| "net.eth0.dns4", |
| "net.gprs.dns1", |
| "net.gprs.dns2", |
| "net.ppp0.dns1", |
| "net.ppp0.dns2"}; |
| } |
| |
| /** |
| * Begin monitoring data connectivity. |
| * |
| * @param context is the current Android context |
| * @param target is the Hander to which to return the events. |
| */ |
| public void startMonitoring(Context context, Handler target) { |
| mTarget = target; |
| mContext = context; |
| |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED); |
| filter.addAction(TelephonyIntents.ACTION_DATA_CONNECTION_FAILED); |
| |
| mContext.registerReceiver(new MobileDataStateReceiver(), filter); |
| mMobileDataState = Phone.DataState.DISCONNECTED; |
| } |
| |
| /** |
| * Return the IP addresses of the DNS servers available for the mobile data |
| * network interface. |
| * @return a list of DNS addresses, with no holes. |
| */ |
| public String[] getDnsPropNames() { |
| return sDnsPropNames; |
| } |
| |
| public boolean isPrivateDnsRouteSet() { |
| return mPrivateDnsRouteSet; |
| } |
| |
| public void privateDnsRouteSet(boolean enabled) { |
| mPrivateDnsRouteSet = enabled; |
| } |
| |
| public NetworkInfo getNetworkInfo() { |
| return mNetworkInfo; |
| } |
| |
| public int getDefaultGatewayAddr() { |
| return mDefaultGatewayAddr; |
| } |
| |
| public boolean isDefaultRouteSet() { |
| return mDefaultRouteSet; |
| } |
| |
| public void defaultRouteSet(boolean enabled) { |
| mDefaultRouteSet = enabled; |
| } |
| |
| /** |
| * This is not implemented. |
| */ |
| public void releaseWakeLock() { |
| } |
| |
| private class MobileDataStateReceiver extends BroadcastReceiver { |
| IConnectivityManager mConnectivityManager; |
| |
| public void onReceive(Context context, Intent intent) { |
| if (intent.getAction().equals(TelephonyIntents. |
| ACTION_ANY_DATA_CONNECTION_STATE_CHANGED)) { |
| String apnType = intent.getStringExtra(Phone.DATA_APN_TYPE_KEY); |
| if (!TextUtils.equals(apnType, mApnType)) { |
| return; |
| } |
| Phone.DataState state = Enum.valueOf(Phone.DataState.class, |
| intent.getStringExtra(Phone.STATE_KEY)); |
| String reason = intent.getStringExtra(Phone.STATE_CHANGE_REASON_KEY); |
| String apnName = intent.getStringExtra(Phone.DATA_APN_KEY); |
| |
| mNetworkInfo.setIsAvailable(!intent.getBooleanExtra(Phone.NETWORK_UNAVAILABLE_KEY, |
| false)); |
| |
| if (DBG) Log.d(TAG, mApnType + " Received state= " + state + ", old= " + |
| mMobileDataState + ", reason= " + |
| (reason == null ? "(unspecified)" : reason)); |
| |
| if (mMobileDataState != state) { |
| mMobileDataState = state; |
| switch (state) { |
| case DISCONNECTED: |
| if(isTeardownRequested()) { |
| setTeardownRequested(false); |
| } |
| |
| setDetailedState(DetailedState.DISCONNECTED, reason, apnName); |
| boolean doReset = true; |
| if (mIsDefaultOrHipri == true) { |
| // both default and hipri must go down before we reset |
| int typeToCheck = (Phone.APN_TYPE_DEFAULT.equals(mApnType) ? |
| ConnectivityManager.TYPE_MOBILE_HIPRI : |
| ConnectivityManager.TYPE_MOBILE); |
| if (mConnectivityManager == null) { |
| IBinder b = ServiceManager.getService( |
| Context.CONNECTIVITY_SERVICE); |
| mConnectivityManager = IConnectivityManager.Stub.asInterface(b); |
| } |
| try { |
| if (mConnectivityManager != null) { |
| NetworkInfo info = mConnectivityManager.getNetworkInfo( |
| typeToCheck); |
| if (info.isConnected() == true) { |
| doReset = false; |
| } |
| } |
| } catch (RemoteException e) { |
| // just go ahead with the reset |
| Log.e(TAG, "Exception trying to contact ConnService: " |
| + e); |
| } |
| } |
| if (doReset && mLinkProperties != null) { |
| String iface = mLinkProperties.getInterfaceName(); |
| if (iface != null) NetworkUtils.resetConnections(iface); |
| } |
| // TODO - check this |
| // can't do this here - ConnectivityService needs it to clear stuff |
| // it's ok though - just leave it to be refreshed next time |
| // we connect. |
| //if (DBG) Log.d(TAG, "clearing mInterfaceName for "+ mApnType + |
| // " as it DISCONNECTED"); |
| //mInterfaceName = null; |
| //mDefaultGatewayAddr = 0; |
| break; |
| case CONNECTING: |
| setDetailedState(DetailedState.CONNECTING, reason, apnName); |
| break; |
| case SUSPENDED: |
| setDetailedState(DetailedState.SUSPENDED, reason, apnName); |
| break; |
| case CONNECTED: |
| mLinkProperties = intent.getParcelableExtra( |
| Phone.DATA_LINK_PROPERTIES_KEY); |
| if (mLinkProperties == null) { |
| Log.d(TAG, "CONNECTED event did not supply link properties."); |
| mLinkProperties = new LinkProperties(); |
| } |
| mLinkCapabilities = intent.getParcelableExtra( |
| Phone.DATA_LINK_CAPABILITIES_KEY); |
| if (mLinkCapabilities == null) { |
| Log.d(TAG, "CONNECTED event did not supply link capabilities."); |
| mLinkCapabilities = new LinkCapabilities(); |
| } |
| setDetailedState(DetailedState.CONNECTED, reason, apnName); |
| break; |
| } |
| } |
| } else if (intent.getAction(). |
| equals(TelephonyIntents.ACTION_DATA_CONNECTION_FAILED)) { |
| String apnType = intent.getStringExtra(Phone.DATA_APN_TYPE_KEY); |
| if (!TextUtils.equals(apnType, mApnType)) { |
| return; |
| } |
| String reason = intent.getStringExtra(Phone.FAILURE_REASON_KEY); |
| String apnName = intent.getStringExtra(Phone.DATA_APN_KEY); |
| if (DBG) Log.d(TAG, mApnType + "Received " + intent.getAction() + |
| " broadcast" + reason == null ? "" : "(" + reason + ")"); |
| setDetailedState(DetailedState.FAILED, reason, apnName); |
| } |
| } |
| } |
| |
| private void getPhoneService(boolean forceRefresh) { |
| if ((mPhoneService == null) || forceRefresh) { |
| mPhoneService = ITelephony.Stub.asInterface(ServiceManager.getService("phone")); |
| } |
| } |
| |
| /** |
| * Report whether data connectivity is possible. |
| */ |
| public boolean isAvailable() { |
| return mNetworkInfo.isAvailable(); |
| } |
| |
| /** |
| * Return the system properties name associated with the tcp buffer sizes |
| * for this network. |
| */ |
| public String getTcpBufferSizesPropName() { |
| String networkTypeStr = "unknown"; |
| TelephonyManager tm = new TelephonyManager(mContext); |
| //TODO We have to edit the parameter for getNetworkType regarding CDMA |
| switch(tm.getNetworkType()) { |
| case TelephonyManager.NETWORK_TYPE_GPRS: |
| networkTypeStr = "gprs"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_EDGE: |
| networkTypeStr = "edge"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_UMTS: |
| networkTypeStr = "umts"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_HSDPA: |
| networkTypeStr = "hsdpa"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_HSUPA: |
| networkTypeStr = "hsupa"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_HSPA: |
| networkTypeStr = "hspa"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_CDMA: |
| networkTypeStr = "cdma"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_1xRTT: |
| networkTypeStr = "1xrtt"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_EVDO_0: |
| networkTypeStr = "evdo"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_EVDO_A: |
| networkTypeStr = "evdo"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_EVDO_B: |
| networkTypeStr = "evdo"; |
| break; |
| } |
| return "net.tcp.buffersize." + networkTypeStr; |
| } |
| |
| /** |
| * Tear down mobile data connectivity, i.e., disable the ability to create |
| * mobile data connections. |
| * TODO - make async and return nothing? |
| */ |
| public boolean teardown() { |
| setTeardownRequested(true); |
| return (setEnableApn(mApnType, false) != Phone.APN_REQUEST_FAILED); |
| } |
| |
| /** |
| * Record the detailed state of a network, and if it is a |
| * change from the previous state, send a notification to |
| * any listeners. |
| * @param state the new @{code DetailedState} |
| * @param reason a {@code String} indicating a reason for the state change, |
| * if one was supplied. May be {@code null}. |
| * @param extraInfo optional {@code String} providing extra information about the state change |
| */ |
| private void setDetailedState(NetworkInfo.DetailedState state, String reason, String extraInfo) { |
| if (DBG) Log.d(TAG, "setDetailed state, old =" |
| + mNetworkInfo.getDetailedState() + " and new state=" + state); |
| if (state != mNetworkInfo.getDetailedState()) { |
| boolean wasConnecting = (mNetworkInfo.getState() == NetworkInfo.State.CONNECTING); |
| String lastReason = mNetworkInfo.getReason(); |
| /* |
| * If a reason was supplied when the CONNECTING state was entered, and no |
| * reason was supplied for entering the CONNECTED state, then retain the |
| * reason that was supplied when going to CONNECTING. |
| */ |
| if (wasConnecting && state == NetworkInfo.DetailedState.CONNECTED && reason == null |
| && lastReason != null) |
| reason = lastReason; |
| mNetworkInfo.setDetailedState(state, reason, extraInfo); |
| Message msg = mTarget.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo); |
| msg.sendToTarget(); |
| } |
| } |
| |
| public void setTeardownRequested(boolean isRequested) { |
| mTeardownRequested = isRequested; |
| } |
| |
| public boolean isTeardownRequested() { |
| return mTeardownRequested; |
| } |
| |
| /** |
| * Re-enable mobile data connectivity after a {@link #teardown()}. |
| * TODO - make async and always get a notification? |
| */ |
| public boolean reconnect() { |
| boolean retValue = false; //connected or expect to be? |
| setTeardownRequested(false); |
| switch (setEnableApn(mApnType, true)) { |
| case Phone.APN_ALREADY_ACTIVE: |
| // need to set self to CONNECTING so the below message is handled. |
| retValue = true; |
| break; |
| case Phone.APN_REQUEST_STARTED: |
| // no need to do anything - we're already due some status update intents |
| retValue = true; |
| break; |
| case Phone.APN_REQUEST_FAILED: |
| case Phone.APN_TYPE_NOT_AVAILABLE: |
| break; |
| default: |
| Log.e(TAG, "Error in reconnect - unexpected response."); |
| break; |
| } |
| return retValue; |
| } |
| |
| /** |
| * Turn on or off the mobile radio. No connectivity will be possible while the |
| * radio is off. The operation is a no-op if the radio is already in the desired state. |
| * @param turnOn {@code true} if the radio should be turned on, {@code false} if |
| */ |
| public boolean setRadio(boolean turnOn) { |
| getPhoneService(false); |
| /* |
| * If the phone process has crashed in the past, we'll get a |
| * RemoteException and need to re-reference the service. |
| */ |
| for (int retry = 0; retry < 2; retry++) { |
| if (mPhoneService == null) { |
| Log.w(TAG, |
| "Ignoring mobile radio request because could not acquire PhoneService"); |
| break; |
| } |
| |
| try { |
| return mPhoneService.setRadio(turnOn); |
| } catch (RemoteException e) { |
| if (retry == 0) getPhoneService(true); |
| } |
| } |
| |
| Log.w(TAG, "Could not set radio power to " + (turnOn ? "on" : "off")); |
| return false; |
| } |
| |
| /** |
| * Tells the phone sub-system that the caller wants to |
| * begin using the named feature. The only supported features at |
| * this time are {@code Phone.FEATURE_ENABLE_MMS}, which allows an application |
| * to specify that it wants to send and/or receive MMS data, and |
| * {@code Phone.FEATURE_ENABLE_SUPL}, which is used for Assisted GPS. |
| * @param feature the name of the feature to be used |
| * @param callingPid the process ID of the process that is issuing this request |
| * @param callingUid the user ID of the process that is issuing this request |
| * @return an integer value representing the outcome of the request. |
| * The interpretation of this value is feature-specific. |
| * specific, except that the value {@code -1} |
| * always indicates failure. For {@code Phone.FEATURE_ENABLE_MMS}, |
| * the other possible return values are |
| * <ul> |
| * <li>{@code Phone.APN_ALREADY_ACTIVE}</li> |
| * <li>{@code Phone.APN_REQUEST_STARTED}</li> |
| * <li>{@code Phone.APN_TYPE_NOT_AVAILABLE}</li> |
| * <li>{@code Phone.APN_REQUEST_FAILED}</li> |
| * </ul> |
| */ |
| public int startUsingNetworkFeature(String feature, int callingPid, int callingUid) { |
| return -1; |
| } |
| |
| /** |
| * Tells the phone sub-system that the caller is finished |
| * using the named feature. The only supported feature at |
| * this time is {@code Phone.FEATURE_ENABLE_MMS}, which allows an application |
| * to specify that it wants to send and/or receive MMS data. |
| * @param feature the name of the feature that is no longer needed |
| * @param callingPid the process ID of the process that is issuing this request |
| * @param callingUid the user ID of the process that is issuing this request |
| * @return an integer value representing the outcome of the request. |
| * The interpretation of this value is feature-specific, except that |
| * the value {@code -1} always indicates failure. |
| */ |
| public int stopUsingNetworkFeature(String feature, int callingPid, int callingUid) { |
| return -1; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuffer sb = new StringBuffer("Mobile data state: "); |
| |
| sb.append(mMobileDataState); |
| return sb.toString(); |
| } |
| |
| /** |
| * Internal method supporting the ENABLE_MMS feature. |
| * @param apnType the type of APN to be enabled or disabled (e.g., mms) |
| * @param enable {@code true} to enable the specified APN type, |
| * {@code false} to disable it. |
| * @return an integer value representing the outcome of the request. |
| */ |
| private int setEnableApn(String apnType, boolean enable) { |
| getPhoneService(false); |
| /* |
| * If the phone process has crashed in the past, we'll get a |
| * RemoteException and need to re-reference the service. |
| */ |
| for (int retry = 0; retry < 2; retry++) { |
| if (mPhoneService == null) { |
| Log.w(TAG, |
| "Ignoring feature request because could not acquire PhoneService"); |
| break; |
| } |
| |
| try { |
| if (enable) { |
| return mPhoneService.enableApnType(apnType); |
| } else { |
| return mPhoneService.disableApnType(apnType); |
| } |
| } catch (RemoteException e) { |
| if (retry == 0) getPhoneService(true); |
| } |
| } |
| |
| Log.w(TAG, "Could not " + (enable ? "enable" : "disable") |
| + " APN type \"" + apnType + "\""); |
| return Phone.APN_REQUEST_FAILED; |
| } |
| |
| public static String networkTypeToApnType(int netType) { |
| switch(netType) { |
| case ConnectivityManager.TYPE_MOBILE: |
| return Phone.APN_TYPE_DEFAULT; // TODO - use just one of these |
| case ConnectivityManager.TYPE_MOBILE_MMS: |
| return Phone.APN_TYPE_MMS; |
| case ConnectivityManager.TYPE_MOBILE_SUPL: |
| return Phone.APN_TYPE_SUPL; |
| case ConnectivityManager.TYPE_MOBILE_DUN: |
| return Phone.APN_TYPE_DUN; |
| case ConnectivityManager.TYPE_MOBILE_HIPRI: |
| return Phone.APN_TYPE_HIPRI; |
| default: |
| Log.e(TAG, "Error mapping networkType " + netType + " to apnType."); |
| return null; |
| } |
| } |
| |
| /** |
| * @see android.net.NetworkStateTracker#getLinkProperties() |
| */ |
| public LinkProperties getLinkProperties() { |
| return new LinkProperties(mLinkProperties); |
| } |
| |
| /** |
| * @see android.net.NetworkStateTracker#getLinkCapabilities() |
| */ |
| public LinkCapabilities getLinkCapabilities() { |
| return new LinkCapabilities(mLinkCapabilities); |
| } |
| } |