Ok here are some methods i made for manipulating with the ETHERNET INTERFACE (eth0).
1) A method for checking if an ethernet interface exists
public static boolean doesEthExist() {
List<String> list = getListOfNetworkInterfaces();
return list.contains("eth0");
}
public static List<String> getListOfNetworkInterfaces() {
List<String> list = new ArrayList<String>();
Enumeration<NetworkInterface> nets;
try {
nets = NetworkInterface.getNetworkInterfaces();
} catch (SocketException e) {
e.printStackTrace();
return null;
}
for (NetworkInterface netint : Collections.list(nets)) {
list.add(netint.getName());
}
return list;
}
2) A method for checking if the ETHERNET is enabled or ON
public static boolean isEthOn() {
try {
String line;
boolean r = false;
Process p = Runtime.getRuntime().exec("netcfg");
BufferedReader input = new BufferedReader (new InputStreamReader(p.getInputStream()));
while ((line = input.readLine()) != null) {
if(line.contains("eth0")){
if(line.contains("UP")){
r=true;
}
else{
r=false;
}
}
}
input.close();
Log.e("OLE","isEthOn: "+r);
return r;
} catch (IOException e) {
Log.e("OLE","Runtime Error: "+e.getMessage());
e.printStackTrace();
return false;
}
}
3) A method for enabling or disabling the Ethernet depending on the state in which it is
public static void turnEthOnOrOff() {
try {
if(isEthOn()){
Runtime.getRuntime().exec("ifconfig eth0 down");
}
else{
Runtime.getRuntime().exec("ifconfig eth0 up");
}
} catch (IOException e) {
Log.e("OLE","Runtime Error: "+e.getMessage());
e.printStackTrace();
}
}
4) A method for connecting via ethernet depending on the chosen type (dhcp/static)
private boolean connectToStaticSettingsViaIfconfig(StaticConnectionSettings scs) {
try {
if(typeChosen.equalsIgnoreCase("dhcp")){
Runtime.getRuntime().exec("ifconfig eth0 dhcp start");
}
else{
Runtime.getRuntime().exec("ifconfig eth0 "+scs.getIp()+" netmask "+scs.getNetmask()+" gw "+scs.getGateway());
}
} catch (IOException e) {
Log.e("OLE","Runtime Error: "+e.getMessage());
e.printStackTrace();
return false;
}
return true;
}
There is one more class which i created for storing all the eth values needed. This class is than initialized with the values the user inserts.
public class StaticConnectionSettings {
private String ip, netmask, dns, mac, gateway, type;
//Getters and Setters
}
This is it ... I will test it shortly... This code lacks a test phase (ping). And maybe it needs setting of DNS. But this can be done easily. I have not included it because i think on our device it will work also without the DNS setting.
