/** Closes all open sockets and stops the internal server thread that processes messages. */
public void close() {
ServerThread st = server;
if (st != null) {
st.close();
try {
st.join();
} catch (InterruptedException ex) {
logger.warn(ex);
}
server = null;
for (Iterator it = sockets.values().iterator(); it.hasNext(); ) {
SocketEntry entry = (SocketEntry) it.next();
try {
synchronized (entry) {
entry.getSocket().close();
}
logger.debug("Socket to " + entry.getPeerAddress() + " closed");
} catch (IOException iox) {
// ingore
logger.debug(iox);
}
}
if (socketCleaner != null) {
socketCleaner.cancel();
}
socketCleaner = null;
}
}
/**
* Add the default SecurityProtocols.
*
* <p>The names of the SecurityProtocols to add are read from a properties file.
*
* @throws InternalError if the properties file cannot be opened/read.
*/
public synchronized void addDefaultProtocols() {
if (SNMP4JSettings.isExtensibilityEnabled()) {
String secProtocols =
System.getProperty(SECURITY_PROTOCOLS_PROPERTIES, SECURITY_PROTOCOLS_PROPERTIES_DEFAULT);
InputStream is = SecurityProtocols.class.getResourceAsStream(secProtocols);
if (is == null) {
throw new InternalError("Could not read '" + secProtocols + "' from classpath!");
}
Properties props = new Properties();
try {
props.load(is);
for (Enumeration en = props.propertyNames(); en.hasMoreElements(); ) {
String className = en.nextElement().toString();
try {
Class c = Class.forName(className);
Object proto = c.newInstance();
if (proto instanceof AuthenticationProtocol) {
addAuthenticationProtocol((AuthenticationProtocol) proto);
} else if (proto instanceof PrivacyProtocol) {
addPrivacyProtocol((PrivacyProtocol) proto);
} else {
logger.error(
"Failed to register security protocol because it does "
+ "not implement required interfaces: "
+ className);
}
} catch (Exception cnfe) {
logger.error(cnfe);
throw new InternalError(cnfe.toString());
}
}
} catch (IOException iox) {
String txt = "Could not read '" + secProtocols + "': " + iox.getMessage();
logger.error(txt);
throw new InternalError(txt);
} finally {
try {
is.close();
} catch (IOException ex) {
// ignore
logger.warn(ex);
}
}
} else {
addAuthenticationProtocol(new AuthMD5());
addAuthenticationProtocol(new AuthSHA());
addPrivacyProtocol(new PrivDES());
addPrivacyProtocol(new PrivAES128());
addPrivacyProtocol(new PrivAES192());
addPrivacyProtocol(new PrivAES256());
}
}
/**
* Closes a connection to the supplied remote address, if it is open. This method is particularly
* useful when not using a timeout for remote connections.
*
* @param remoteAddress the address of the peer socket.
* @return <code>true</code> if the connection has been closed and <code>false</code> if there was
* nothing to close.
* @since 1.7.1
*/
public synchronized boolean close(Address remoteAddress) throws IOException {
if (logger.isDebugEnabled()) {
logger.debug("Closing socket for peer address " + remoteAddress);
}
SocketEntry entry = (SocketEntry) sockets.remove(remoteAddress);
if (entry != null) {
synchronized (entry) {
entry.getSocket().close();
}
logger.info("Socket to " + entry.getPeerAddress() + " closed");
return true;
}
return false;
}
/**
* Closes the socket and stops the listener thread.
*
* @throws IOException
*/
public void close() throws IOException {
boolean interrupted = false;
WorkerTask l = listener;
if (l != null) {
l.terminate();
l.interrupt();
if (socketTimeout > 0) {
try {
l.join();
} catch (InterruptedException ex) {
interrupted = true;
logger.warn(ex);
}
}
listener = null;
}
DatagramSocket closingSocket = socket;
if ((closingSocket != null) && (!closingSocket.isClosed())) {
closingSocket.close();
}
socket = null;
if (interrupted) {
Thread.currentThread().interrupt();
}
}
public void sendMessage(
UdpAddress targetAddress, byte[] message, TransportStateReference tmStateReference)
throws java.io.IOException {
InetSocketAddress targetSocketAddress =
new InetSocketAddress(targetAddress.getInetAddress(), targetAddress.getPort());
if (logger.isDebugEnabled()) {
logger.debug(
"Sending message to "
+ targetAddress
+ " with length "
+ message.length
+ ": "
+ new OctetString(message).toHexString());
}
DatagramSocket s = ensureSocket();
s.send(new DatagramPacket(message, message.length, targetSocketAddress));
}
private void _log(String logMsg) {
if (_isCurrentlyOnMainThread()) {
_logs.add(0, logMsg + " (main thread) ");
_adapter.clear();
_adapter.addAll(_logs);
} else {
_logs.add(0, logMsg + " (NOT main thread) ");
// You can only do below stuff on main thread.
new Handler(Looper.getMainLooper())
.post(
() -> {
_adapter.clear();
_adapter.addAll(_logs);
});
}
}
/** Default constructor, initializes the salt to a random value. */
protected Salt() {
byte[] rnd = new byte[8];
try {
SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
sr.nextBytes(rnd);
} catch (NoSuchAlgorithmException nsae) {
logger.warn("Could not use SecureRandom. Using Random instead.");
Random r = new Random();
r.nextBytes(rnd);
}
salt = rnd[0];
for (int i = 0; i < 7; i++) {
salt = (salt * 256) + ((int) rnd[i]) + 128;
}
if (logger.isDebugEnabled() == true) {
logger.debug("Initialized Salt to " + Long.toHexString(salt) + ".");
}
}
/** 返回以调用者的类命名的Log,是获取Log对象最简单的方法! */
public static Log get() {
return adapter.getLogger(Thread.currentThread().getStackTrace()[2].getClassName());
}
/**
* Get a Log by name
*
* @param className the name of Log
* @return Log
* @throws NullPointerException when className is null, maybe it will case NPE
*/
public static Log getLog(String className) {
return adapter.getLogger(className);
}
