public static void populateLanMasks(Context context, String[] names, InterfaceDetails ret) {
WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
DhcpInfo dhcp = wifi.getDhcpInfo();
if (dhcp != null) {
ret.lanMaskV4 = intToDottedQuad(dhcp.ipAddress) + "/" + intToDottedQuad(dhcp.netmask);
ret.wifiName = "UNKNOWN";
}
}
public static boolean checkForNewCfg(Context context) {
InterfaceDetails newCfg = getInterfaceDetails(context);
if (currentCfg != null && currentCfg.equals(newCfg)) {
return false;
}
currentCfg = newCfg;
if (!newCfg.netEnabled) {
Log.i(TAG, "Now assuming NO connection (all interfaces down)");
} else {
if (newCfg.netType == ConnectivityManager.TYPE_WIFI) {
Log.i(TAG, "Now assuming wifi connection");
} else if (newCfg.netType == ConnectivityManager.TYPE_MOBILE) {
Log.i(
TAG,
"Now assuming 3G connection ("
+ (newCfg.isRoaming ? "roaming, " : "")
+ (newCfg.isTethered ? "tethered" : "non-tethered")
+ ")");
}
if (!newCfg.lanMaskV4.equals("")) {
Log.i(TAG, "IPv4 LAN netmask on " + newCfg.wifiName + ": " + newCfg.lanMaskV4);
}
if (!newCfg.lanMaskV6.equals("")) {
Log.i(TAG, "IPv6 LAN netmask on " + newCfg.wifiName + ": " + newCfg.lanMaskV6);
}
}
return true;
}
private static void getTetherStatus(Context context, InterfaceDetails d) {
WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
Method[] wmMethods = wifi.getClass().getDeclaredMethods();
d.isTethered = false;
d.tetherStatusKnown = false;
for (Method method : wmMethods) {
if (method.getName().equals("isWifiApEnabled")) {
try {
d.isTethered = ((Boolean) method.invoke(wifi)).booleanValue();
d.tetherStatusKnown = true;
Log.d(TAG, "isWifiApEnabled is " + d.isTethered);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
public static void populateLanMasks(Context context, String[] names, InterfaceDetails ret) {
try {
Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
while (en.hasMoreElements()) {
NetworkInterface intf = en.nextElement();
boolean match = false;
if (!intf.isUp() || intf.isLoopback()) {
continue;
}
for (String pattern : ITFS_WIFI) {
if (intf.getName().startsWith(truncAfter(pattern, "\\+"))) {
match = true;
break;
}
}
if (!match) continue;
ret.wifiName = intf.getName();
Iterator<InterfaceAddress> addrList = intf.getInterfaceAddresses().iterator();
while (addrList.hasNext()) {
InterfaceAddress addr = addrList.next();
InetAddress ip = addr.getAddress();
String mask =
truncAfter(ip.getHostAddress(), "%") + "/" + addr.getNetworkPrefixLength();
if (ip instanceof Inet4Address) {
ret.lanMaskV4 = mask;
} else if (ip instanceof Inet6Address) {
ret.lanMaskV6 = mask;
}
}
}
} catch (SocketException e) {
Log.e(TAG, "Error fetching network interface list");
} catch (Exception e) {
Log.e(TAG, "Error fetching network interface list");
}
}
private static InterfaceDetails getInterfaceDetails(Context context) {
InterfaceDetails ret = new InterfaceDetails();
ConnectivityManager cm =
(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = cm.getActiveNetworkInfo();
if (info == null || info.isConnected() == false) {
return ret;
}
switch (info.getType()) {
case ConnectivityManager.TYPE_MOBILE:
case ConnectivityManager.TYPE_MOBILE_DUN:
case ConnectivityManager.TYPE_MOBILE_HIPRI:
case ConnectivityManager.TYPE_MOBILE_MMS:
case ConnectivityManager.TYPE_MOBILE_SUPL:
case ConnectivityManager.TYPE_WIMAX:
ret.isRoaming = info.isRoaming();
ret.netType = ConnectivityManager.TYPE_MOBILE;
ret.netEnabled = true;
break;
case ConnectivityManager.TYPE_WIFI:
case ConnectivityManager.TYPE_BLUETOOTH:
case ConnectivityManager.TYPE_ETHERNET:
ret.netType = ConnectivityManager.TYPE_WIFI;
ret.netEnabled = true;
break;
}
getTetherStatus(context, ret);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.GINGERBREAD) {
OldInterfaceScanner.populateLanMasks(context, ITFS_WIFI, ret);
} else {
NewInterfaceScanner.populateLanMasks(context, ITFS_WIFI, ret);
}
return ret;
}