Kaladaran/briar
0
0
Fork 0
mirror of https://code.briarproject.org/briar/briar.git synced 2026-02-16 04:39:54 +01:00
Code Issues Projects Releases Wiki Activity

Use WifiManager to get wifi network information.

Browse Source 
This ensures we bind to the wifi interface even if it doesn't have internet access and there's another interface with internet access (e.g. mobile data).
This commit is contained in:
akwizgran
2018-03-26 13:58:10 +01:00
parent 235183a3af
commit e0a1fa559d
1 changed files with 41 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
bramble-android/src/main/java/org/briarproject/bramble/plugin/tcp/AndroidLanTcpPlugin.java
View File

@@ -4,21 +4,25 @@ import android.content.BroadcastReceiver;
import android.content.Context; import android.content.Context;
import android.content.Intent; import android.content.Intent;
import android.content.IntentFilter; import android.content.IntentFilter;
import android.net.ConnectivityManager; import android.net.wifi.WifiInfo;
import android.net.NetworkInfo; import android.net.wifi.WifiManager;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault; import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
import org.briarproject.bramble.api.plugin.Backoff; import org.briarproject.bramble.api.plugin.Backoff;
import org.briarproject.bramble.api.plugin.duplex.DuplexPluginCallback; import org.briarproject.bramble.api.plugin.duplex.DuplexPluginCallback;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Collection;
import java.util.concurrent.Executor; import java.util.concurrent.Executor;
import java.util.logging.Logger; import java.util.logging.Logger;
import javax.annotation.Nullable; import javax.annotation.Nullable;
import static android.content.Context.CONNECTIVITY_SERVICE; import static android.content.Context.WIFI_SERVICE;
import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; import static android.net.ConnectivityManager.CONNECTIVITY_ACTION;
import static android.net.ConnectivityManager.TYPE_WIFI; import static java.util.Collections.emptyList;
import static java.util.Collections.singletonList;
@NotNullByDefault @NotNullByDefault
class AndroidLanTcpPlugin extends LanTcpPlugin { class AndroidLanTcpPlugin extends LanTcpPlugin {
@@ -27,6 +31,8 @@ class AndroidLanTcpPlugin extends LanTcpPlugin {
Logger.getLogger(AndroidLanTcpPlugin.class.getName()); Logger.getLogger(AndroidLanTcpPlugin.class.getName());
private final Context appContext; private final Context appContext;
@Nullable
private final WifiManager wifiManager;
@Nullable @Nullable
private volatile BroadcastReceiver networkStateReceiver = null; private volatile BroadcastReceiver networkStateReceiver = null;
@@ -36,6 +42,8 @@ class AndroidLanTcpPlugin extends LanTcpPlugin {
int maxIdleTime) { int maxIdleTime) {
super(ioExecutor, backoff, callback, maxLatency, maxIdleTime); super(ioExecutor, backoff, callback, maxLatency, maxIdleTime);
this.appContext = appContext; this.appContext = appContext;
wifiManager = (WifiManager) appContext.getApplicationContext()
.getSystemService(WIFI_SERVICE);
} }
@Override @Override
@@ -56,20 +64,40 @@ class AndroidLanTcpPlugin extends LanTcpPlugin {
tryToClose(socket); tryToClose(socket);
} }
@Override
protected Collection<InetAddress> getLocalIpAddresses() {
if (wifiManager == null) return emptyList();
WifiInfo info = wifiManager.getConnectionInfo();
if (info == null || info.getIpAddress() == 0) return emptyList();
return singletonList(intToInetAddress(info.getIpAddress()));
}
private InetAddress intToInetAddress(int ip) {
byte[] ipBytes = new byte[4];
ipBytes[0] = (byte) (ip & 0xFF);
ipBytes[1] = (byte) ((ip >> 8) & 0xFF);
ipBytes[2] = (byte) ((ip >> 16) & 0xFF);
ipBytes[3] = (byte) ((ip >> 24) & 0xFF);
try {
return InetAddress.getByAddress(ipBytes);
} catch (UnknownHostException e) {
// Should only be thrown if address has illegal length
throw new AssertionError(e);
}
}
private class NetworkStateReceiver extends BroadcastReceiver { private class NetworkStateReceiver extends BroadcastReceiver {
@Override @Override
public void onReceive(Context ctx, Intent i) { public void onReceive(Context ctx, Intent i) {
if (!running) return; if (!running || wifiManager == null) return;
Object o = ctx.getSystemService(CONNECTIVITY_SERVICE); WifiInfo info = wifiManager.getConnectionInfo();
ConnectivityManager cm = (ConnectivityManager) o; if (info == null || info.getIpAddress() == 0) {
NetworkInfo net = cm.getActiveNetworkInfo(); LOG.info("Not connected to wifi");
if (net != null && net.getType() == TYPE_WIFI && net.isConnected()) {
LOG.info("Connected to Wi-Fi");
if (socket == null || socket.isClosed()) bind();
} else {
LOG.info("Not connected to Wi-Fi");
tryToClose(socket); tryToClose(socket);
} else {
LOG.info("Connected to wifi");
if (socket == null || socket.isClosed()) bind();
} }
} }
} }