private Core() {
boolean f = false;
try {
for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
NetworkInterface intf = (NetworkInterface) en.nextElement();
for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
InetAddress inetAddress = (InetAddress) enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet4Address) {
String ipAddress = inetAddress.getHostAddress().toString();
this.ip = inetAddress;
f = true;
break;
}
}
if (f) break;
}
} catch (SocketException ex) {
ex.printStackTrace();
System.exit(1);
}
this.teams = new HashMap<String, Team>();
this.judges = new HashMap<String, Judge>();
this.problems = new HashMap<String, ProblemInfo>();
this.scheduler = new Scheduler();
this.timer = new ContestTimer(300 * 60);
try {
readConfigure();
} catch (FileNotFoundException e) {
e.printStackTrace();
System.exit(1);
}
this.scoreBoardHttpServer = new ScoreBoardHttpServer(this.scoreBoardPort);
}
public String getLocalIpAddress() {
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
en.hasMoreElements(); ) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses();
enumIpAddr.hasMoreElements(); ) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
System.err.println(inetAddress.getHostAddress().toString());
}
}
}
} catch (SocketException ex) {
System.err.println("can't get ip");
}
return null;
}
/**
* Returns an InetAddress instance that represents the localhost, and that a socket can bind upon
* or distribute to peers as a contact address.
*
* @param intendedDestination the destination that we'd like to use the localhost address with.
* @return an InetAddress instance representing the local host, and that a socket can bind upon or
* distribute to peers as a contact address.
*/
public synchronized InetAddress getLocalHost(InetAddress intendedDestination) {
// no point in making sure that the localHostFinderSocket is initialized.
// better let it through a NullPointerException.
InetAddress localHost = null;
localHostFinderSocket.connect(intendedDestination, this.RANDOM_ADDR_DISC_PORT);
localHost = localHostFinderSocket.getLocalAddress();
localHostFinderSocket.disconnect();
// windows socket implementations return the any address so we need to
// find something else here ... InetAddress.getLocalHost seems to work
// better on windows so lets hope it'll do the trick.
if (localHost.isAnyLocalAddress()) {
try {
// all that's inside the if is an ugly IPv6 hack
// (good ol' IPv6 - always causing more problems than it solves.)
if (intendedDestination instanceof Inet6Address) {
// return the first globally routable ipv6 address we find
// on the machine (and hope it's a good one)
Enumeration interfaces = NetworkInterface.getNetworkInterfaces();
while (interfaces.hasMoreElements()) {
NetworkInterface iface = (NetworkInterface) interfaces.nextElement();
Enumeration addresses = iface.getInetAddresses();
while (addresses.hasMoreElements()) {
InetAddress address = (InetAddress) addresses.nextElement();
if (address instanceof Inet6Address) {
if (!address.isAnyLocalAddress()
&& !address.isLinkLocalAddress()
&& !address.isSiteLocalAddress()
&& !address.isLoopbackAddress()) {
return address;
}
}
}
}
} else localHost = InetAddress.getLocalHost();
/** @todo test on windows for ipv6 cases */
} catch (Exception ex) {
// sigh ... ok return 0.0.0.0
logger.warn("Failed to get localhost ", ex);
}
}
return localHost;
}
public String getLocalIpAddress() {
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
en.hasMoreElements(); ) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses();
enumIpAddr.hasMoreElements(); ) {
InetAddress inetAddress = enumIpAddr.nextElement();
// if (!inetAddress.isLoopbackAddress() && !inetAddress.isLinkLocalAddress() &&
// inetAddress.isSiteLocalAddress() ) {
if (!inetAddress.isLoopbackAddress()
&& InetAddressUtils.isIPv4Address(inetAddress.getHostAddress())) {
String ipAddr = inetAddress.getHostAddress();
return ipAddr;
}
}
}
} catch (SocketException ex) {
Log.d(TAG, ex.toString());
}
return null;
}
/** @return */
public static String getIPv4Address() {
String ipv4address = null;
try {
final List<NetworkInterface> networkinterfaces =
Collections.list(NetworkInterface.getNetworkInterfaces());
for (final NetworkInterface networkinterface : networkinterfaces) {
final List<InetAddress> addresses = Collections.list(networkinterface.getInetAddresses());
for (final InetAddress address : addresses) {
if ((address == null) || address.isLoopbackAddress()) {
continue;
}
if (address instanceof Inet4Address) {
ipv4address = address.getHostAddress().toString();
break;
}
}
}
} catch (Exception x) {
DBG.m(x);
}
return ipv4address;
}
/**
* Get IP address from first non-localhost interface
*
* @param ipv4 true=return ipv4, false=return ipv6
* @return address or empty string
*/
public static String getIPAddress(boolean useIPv4) {
try {
List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface intf : interfaces) {
List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
for (InetAddress addr : addrs) {
if (!addr.isLoopbackAddress()) {
String sAddr = addr.getHostAddress().toUpperCase();
boolean isIPv4 = InetAddressUtils.isIPv4Address(sAddr);
if (useIPv4) {
if (isIPv4) return sAddr;
} else {
if (!isIPv4) {
int delim = sAddr.indexOf('%'); // drop ip6 port suffix
return delim < 0 ? sAddr : sAddr.substring(0, delim);
}
}
}
}
}
} catch (Exception ex) {
} // for now eat exceptions
return "";
}