public final String readCommand(byte[] b)
throws IOException, InterruptedException, MessagingNetworkException {
InputStream is = getInputStream();
synchronized (is) {
long abortTime =
System.currentTimeMillis() + 1000 * MSNMessagingNetwork.REQPARAM_SOCKET_TIMEOUT_SECONDS;
int ofs = 0;
boolean d = false;
for (; ; ) {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
int by = is.read();
if (by == -1) throw new IOException("unexpected EOF");
if (by == 10 && d) break;
d = (by == 13);
if (ofs < b.length) {
b[ofs++] = (byte) by;
}
if (System.currentTimeMillis() > abortTime) throw new IOException("connection timed out");
/*
if (len >= buffer.length)
{
...
return ...;
}
int pos = findCRLF();
if (pos != -1) break;
fill(is, abortTime);
*/
}
if (b[ofs - 1] == 13) --ofs;
String line = new String(b, 0, ofs, "ASCII");
if (StringUtil.startsWith(line, "MSG")) {
StringTokenizer st = new StringTokenizer(line);
String len_s = null;
while (st.hasMoreTokens()) {
len_s = st.nextToken();
}
if (len_s == null) throw new AssertException("len_s is null");
int len;
try {
len = Integer.parseInt(len_s);
} catch (NumberFormatException ex) {
ServerConnection.throwProtocolViolated("MSG length must be int");
len = 0;
}
String msg = readMSG(len);
line = line + "\r\n" + msg;
}
if (Defines.DEBUG && CAT.isDebugEnabled()) CAT.debug("S: " + line);
return line;
}
}
public final void writeASCII(String s) throws IOException {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
OutputStream os = getOutputStream();
synchronized (os) {
if (Defines.DEBUG && CAT.isDebugEnabled()) CAT.debug("C: " + s);
os.write(s.getBytes("ASCII"));
os.write((byte) 13);
os.write((byte) 10);
os.flush();
}
}
/**
* UTF byte count is appended to the asciiPrefix, then UTF bytes are appended to the result; the
* final result is sent.
*/
public final void writeMSG(String asciiPrefix, String msgBody) throws IOException {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
OutputStream os = getOutputStream();
synchronized (os) {
byte[] utfBytes = msgBody.getBytes("UTF-8");
asciiPrefix = asciiPrefix + ' ' + utfBytes.length;
if (Defines.DEBUG && CAT.isDebugEnabled()) CAT.debug("C: " + asciiPrefix + "\r\n" + msgBody);
os.write(asciiPrefix.getBytes("ASCII"));
os.write((byte) 13);
os.write((byte) 10);
os.write(utfBytes);
os.flush();
}
}
public abstract class Connection {
private static final boolean TRAKTOR_USED = false;
private static final org.apache.log4j.Logger CAT =
org.apache.log4j.Logger.getLogger(Connection.class.getName());
private Frame traktor;
private static boolean traktorConnectionDown = false;
/**
* Creates a new connection to the specified host of specified type. <br>
* <br>
* type: Type of connection to create <br>
* destination: Host to connect to (in "host:port" or "host" syntax)
*/
public Connection(java.net.InetAddress host, int port, PluginContext ctx)
throws MessagingNetworkException, java.io.IOException {
if (TRAKTOR_USED) {
if (traktorConnectionDown) throw new IOException("network is down");
traktor = new Frame("" + host + ":" + port + " - Traktor");
final Checkbox c = new Checkbox("break this & ALL future connections");
c.setState(traktorConnectionDown);
c.addItemListener(
new ItemListener() {
public void itemStateChanged(ItemEvent e) {
traktorConnectionDown = c.getState();
try {
if (traktorConnectionDown) closeSocket();
} catch (Exception ex) {
}
}
});
traktor.add(c);
traktor.setSize(100, 50);
traktor.setLocation(230, 450);
traktor.setVisible(true);
} else {
traktor = null;
}
}
public final int available() throws IOException {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
if (isClosed()) throw new IOException("connection closed");
return getInputStream().available();
}
public abstract void closeSocket();
public final void flush() throws IOException, MessagingNetworkException {
OutputStream os = getOutputStream();
synchronized (os) {
os.flush();
}
}
protected final java.io.InputStream getInputStream() throws IOException {
if (isClosed()) throw new IOException("connection closed");
InputStream is = getInputStream0();
if (is == null) throw new IOException("connection closed");
return is;
}
protected abstract java.io.InputStream getInputStream0() throws IOException;
protected final java.io.OutputStream getOutputStream() throws IOException {
if (isClosed()) {
if (TRAKTOR_USED && traktor != null && !traktorConnectionDown) {
traktor.dispose();
traktor = null;
}
throw new IOException("connection closed");
}
OutputStream os = getOutputStream0();
if (os == null) throw new IOException("connection closed");
return os;
}
protected abstract java.io.OutputStream getOutputStream0() throws IOException;
public abstract boolean isClosed();
/*
private byte[] buf = new byte[8192];
private int ofs = 0;
private int len = 0;
private void fill(InputStream is, long abortTime)
throws IOException
{
for (;;)
{
if (System.currentTimeMillis() > abortTime) throw new IOException("connection timed out");
int av = is.available();
if (av == 0)
{
try
{
Thread.currentThread().sleep(100);
}
catch (InterruptedException ex)
{
throw new InterruptedIOException();
}
continue;
}
int capacity = buf.length - len;
if (av > capacity) av = capacity;
int rc = capacity - ofs;
int pos = ofs + len;
if (rc >= av)
{
int read = is.read(buf, pos, av);
if (read < 0) read = 0;
len += read;
return;
}
//rc < av
while (rc > 0)
{
int read = is.read(buf, ofs, rc);
if (read < 0) read = 0;
len += read;
rc -= read;
if (System.currentTimeMillis() > abortTime) throw new IOException("connection timed out");
}
//rc <= 0
//case 1, when buf.length-1 >= ofs+len-1 (=> rc > 0)
//cells ofs, ..., ofs+len-1 are filled
//case 2, when buf.length-1 < ofs+len-1 (<=> buf.length-1 <= ofs+len-2)
//cells ofs, ..., buf.length-1 are filled
//cells 0, ..., ofs+len-2 - (buf.length-1) are filled, too
int lm = ofs+len-1 - buf.length;
if (lm > av) lm = av;
rc = 0;
while (lm > 0)
{
int read = is.read(buf, ofs, rc);
if (read < 0) read = 0;
len += read;
rc -= read;
if (System.currentTimeMillis() > abortTime) throw new IOException("connection timed out");
}
}
}
*/
public final String readCommand(byte[] b)
throws IOException, InterruptedException, MessagingNetworkException {
InputStream is = getInputStream();
synchronized (is) {
long abortTime =
System.currentTimeMillis() + 1000 * MSNMessagingNetwork.REQPARAM_SOCKET_TIMEOUT_SECONDS;
int ofs = 0;
boolean d = false;
for (; ; ) {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
int by = is.read();
if (by == -1) throw new IOException("unexpected EOF");
if (by == 10 && d) break;
d = (by == 13);
if (ofs < b.length) {
b[ofs++] = (byte) by;
}
if (System.currentTimeMillis() > abortTime) throw new IOException("connection timed out");
/*
if (len >= buffer.length)
{
...
return ...;
}
int pos = findCRLF();
if (pos != -1) break;
fill(is, abortTime);
*/
}
if (b[ofs - 1] == 13) --ofs;
String line = new String(b, 0, ofs, "ASCII");
if (StringUtil.startsWith(line, "MSG")) {
StringTokenizer st = new StringTokenizer(line);
String len_s = null;
while (st.hasMoreTokens()) {
len_s = st.nextToken();
}
if (len_s == null) throw new AssertException("len_s is null");
int len;
try {
len = Integer.parseInt(len_s);
} catch (NumberFormatException ex) {
ServerConnection.throwProtocolViolated("MSG length must be int");
len = 0;
}
String msg = readMSG(len);
line = line + "\r\n" + msg;
}
if (Defines.DEBUG && CAT.isDebugEnabled()) CAT.debug("S: " + line);
return line;
}
}
private final String readMSG(final int len)
throws IOException, InterruptedException, MessagingNetworkException {
if (len > 65000)
ServerConnection.throwProtocolViolated("incoming message is too long: " + len + " bytes");
byte[] b = new byte[len];
InputStream is = getInputStream();
synchronized (is) {
long abortTime =
System.currentTimeMillis() + 1000 * MSNMessagingNetwork.REQPARAM_SOCKET_TIMEOUT_SECONDS;
int ofs = 0;
while (ofs < len) {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
int read = is.read(b, ofs, len - ofs);
if (read < 0) read = 0;
ofs += read;
if (System.currentTimeMillis() > abortTime) throw new IOException("connection timed out");
/*
if (len >= buffer.length)
{
...
return ...;
}
int pos = findCRLF();
if (pos != -1) break;
fill(is, abortTime);
*/
}
String msg = new String(b, 0, len, "UTF-8");
return msg;
}
}
public final void writeASCII(String s) throws IOException {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
OutputStream os = getOutputStream();
synchronized (os) {
if (Defines.DEBUG && CAT.isDebugEnabled()) CAT.debug("C: " + s);
os.write(s.getBytes("ASCII"));
os.write((byte) 13);
os.write((byte) 10);
os.flush();
}
}
/**
* UTF byte count is appended to the asciiPrefix, then UTF bytes are appended to the result; the
* final result is sent.
*/
public final void writeMSG(String asciiPrefix, String msgBody) throws IOException {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
OutputStream os = getOutputStream();
synchronized (os) {
byte[] utfBytes = msgBody.getBytes("UTF-8");
asciiPrefix = asciiPrefix + ' ' + utfBytes.length;
if (Defines.DEBUG && CAT.isDebugEnabled()) CAT.debug("C: " + asciiPrefix + "\r\n" + msgBody);
os.write(asciiPrefix.getBytes("ASCII"));
os.write((byte) 13);
os.write((byte) 10);
os.write(utfBytes);
os.flush();
}
}
}
