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Diffstat (limited to 'base/util/src/netscape/net/TransferProtocolClient.java')
-rw-r--r-- | base/util/src/netscape/net/TransferProtocolClient.java | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/base/util/src/netscape/net/TransferProtocolClient.java b/base/util/src/netscape/net/TransferProtocolClient.java new file mode 100644 index 000000000..76e3a9c21 --- /dev/null +++ b/base/util/src/netscape/net/TransferProtocolClient.java @@ -0,0 +1,127 @@ +// --- 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() { + } +} |