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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package netscape.net;
import java.io.IOException;
import java.util.Vector;
/**
* This class implements that basic intefaces of transfer protocols.
* It is used by subclasses implementing specific protocols.
*
* @version 1.25, 08/07/97
* @author Jonathan Payne
*/
public class TransferProtocolClient extends NetworkClient {
static final boolean debug = false;
/**
* Array of strings (usually 1 entry) for the last reply
* from the server.
*/
protected Vector<String> serverResponse = new Vector<String>(1);
/** code for last reply */
protected int lastReplyCode;
/**
* Pulls the response from the server and returns the code as a
* number. Returns -1 on failure.
*/
public int readServerResponse() throws IOException {
StringBuffer replyBuf = new StringBuffer(32);
int c;
int continuingCode = -1;
int code;
String response;
serverResponse.setSize(0);
while (true) {
while ((c = serverInput.read()) != -1) {
if (c == '\r') {
if ((c = serverInput.read()) != '\n')
replyBuf.append('\r');
}
replyBuf.append((char) c);
if (c == '\n')
break;
}
response = replyBuf.toString();
replyBuf.setLength(0);
if (debug) {
System.out.print(response);
}
try {
code = Integer.parseInt(response.substring(0, 3));
} catch (NumberFormatException e) {
code = -1;
} catch (StringIndexOutOfBoundsException e) {
/* this line doesn't contain a response code, so
we just completely ignore it */
continue;
}
serverResponse.addElement(response);
if (continuingCode != -1) {
/* we've seen a XXX- sequence */
if (code != continuingCode ||
(response.length() >= 4 && response.charAt(3) == '-')) {
continue;
} else {
/* seen the end of code sequence */
continuingCode = -1;
break;
}
} else if (response.length() >= 4 && response.charAt(3) == '-') {
continuingCode = code;
continue;
} else {
break;
}
}
return lastReplyCode = code;
}
/** Sends command <i>cmd</i> to the server. */
public void sendServer(String cmd) {
serverOutput.print(cmd);
if (debug) {
System.out.print("Sending: " + cmd);
}
}
/** converts the server response into a string. */
public String getResponseString() {
return (String) serverResponse.elementAt(0);
}
/** Returns all server response strings. */
public Vector<String> getResponseStrings() {
return serverResponse;
}
/** standard constructor to host <i>host</i>, port <i>port</i>. */
public TransferProtocolClient(String host, int port) throws IOException {
super(host, port);
}
/** creates an uninitialized instance of this class. */
public TransferProtocolClient() {
}
}
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