diff options
| author | Joe Robinson <joe@lc8n.com> | 2010-10-27 14:21:09 +0100 |
|---|---|---|
| committer | Joe Robinson <joe@lc8n.com> | 2010-10-27 14:21:09 +0100 |
| commit | 063284837c8c366e5502b1b0264b8eb807b61732 (patch) | |
| tree | fff3a1e1e5afaa671485b9d990704658276627ac /org/apache/commons/net/chargen | |
Basic upload functionality to predifined location, with basic file browser
Diffstat (limited to 'org/apache/commons/net/chargen')
| -rw-r--r-- | org/apache/commons/net/chargen/CharGenTCPClient.java | 86 | ||||
| -rw-r--r-- | org/apache/commons/net/chargen/CharGenUDPClient.java | 129 |
2 files changed, 215 insertions, 0 deletions
diff --git a/org/apache/commons/net/chargen/CharGenTCPClient.java b/org/apache/commons/net/chargen/CharGenTCPClient.java new file mode 100644 index 0000000..a023e58 --- /dev/null +++ b/org/apache/commons/net/chargen/CharGenTCPClient.java @@ -0,0 +1,86 @@ +/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.net.chargen;
+
+import java.io.InputStream;
+
+import org.apache.commons.net.SocketClient;
+
+/***
+ * The CharGenTCPClient class is a TCP implementation of a client for the
+ * character generator protocol described in RFC 864. It can also be
+ * used for Systat (RFC 866), Quote of the Day (RFC 865), and netstat
+ * (port 15). All of these protocols involve connecting to the appropriate
+ * port, and reading data from an input stream. The chargen protocol
+ * actually sends data until the receiving end closes the connection. All
+ * of the others send only a fixed amount of data and then close the
+ * connection.
+ * <p>
+ * To use the CharGenTCPClient class, just establish a
+ * connection with
+ * {@link org.apache.commons.net.SocketClient#connect connect }
+ * and call {@link #getInputStream getInputStream() } to access
+ * the data. Don't close the input stream when you're done with it. Rather,
+ * call {@link org.apache.commons.net.SocketClient#disconnect disconnect }
+ * to clean up properly.
+ * <p>
+ * <p>
+ * @author Daniel F. Savarese
+ * @see CharGenUDPClient
+ ***/
+
+public final class CharGenTCPClient extends SocketClient
+{
+ /*** The systat port value of 11 according to RFC 866. ***/
+ public static final int SYSTAT_PORT = 11;
+ /*** The netstat port value of 19. ***/
+ public static final int NETSTAT_PORT = 15;
+ /*** The quote of the day port value of 17 according to RFC 865. ***/
+ public static final int QUOTE_OF_DAY_PORT = 17;
+ /*** The character generator port value of 19 according to RFC 864. ***/
+ public static final int CHARGEN_PORT = 19;
+ /*** The default chargen port. It is set to 19 according to RFC 864. ***/
+ public static final int DEFAULT_PORT = 19;
+
+ /***
+ * The default constructor for CharGenTCPClient. It merely sets the
+ * default port to <code> DEFAULT_PORT </code>.
+ ***/
+ public CharGenTCPClient ()
+ {
+ setDefaultPort(DEFAULT_PORT);
+ }
+
+ /***
+ * Returns an InputStream from which the server generated data can be
+ * read. You should NOT close the InputStream when you're finished
+ * reading from it. Rather, you should call
+ * {@link org.apache.commons.net.SocketClient#disconnect disconnect }
+ * to clean up properly.
+ * <p>
+ * @return An InputStream from which the server generated data can be read.
+ ***/
+ public InputStream getInputStream()
+ {
+ return _input_;
+ }
+}
+
+
+
+
diff --git a/org/apache/commons/net/chargen/CharGenUDPClient.java b/org/apache/commons/net/chargen/CharGenUDPClient.java new file mode 100644 index 0000000..f9a349a --- /dev/null +++ b/org/apache/commons/net/chargen/CharGenUDPClient.java @@ -0,0 +1,129 @@ +/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.net.chargen;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.InetAddress;
+
+import org.apache.commons.net.DatagramSocketClient;
+
+/***
+ * The CharGenUDPClient class is a UDP implementation of a client for the
+ * character generator protocol described in RFC 864. It can also be
+ * used for Systat (RFC 866), Quote of the Day (RFC 865), and netstat
+ * (port 15). All of these protocols involve sending a datagram to the
+ * appropriate port, and reading data contained in one or more reply
+ * datagrams. The chargen and quote of the day protocols only send
+ * one reply datagram containing 512 bytes or less of data. The other
+ * protocols may reply with more than one datagram, in which case you
+ * must wait for a timeout to determine that all reply datagrams have
+ * been sent.
+ * <p>
+ * To use the CharGenUDPClient class, just open a local UDP port
+ * with {@link org.apache.commons.net.DatagramSocketClient#open open }
+ * and call {@link #send send } to send the datagram that will
+ * initiate the data reply. For chargen or quote of the day, just
+ * call {@link #receive receive }, and you're done. For netstat and
+ * systat, call receive in a while loop, and catch a SocketException and
+ * InterruptedIOException to detect a timeout (don't forget to set the
+ * timeout duration beforehand). Don't forget to call
+ * {@link org.apache.commons.net.DatagramSocketClient#close close() }
+ * to clean up properly.
+ * <p>
+ * <p>
+ * @author Daniel F. Savarese
+ * @see CharGenTCPClient
+ ***/
+
+public final class CharGenUDPClient extends DatagramSocketClient
+{
+ /*** The systat port value of 11 according to RFC 866. ***/
+ public static final int SYSTAT_PORT = 11;
+ /*** The netstat port value of 19. ***/
+ public static final int NETSTAT_PORT = 15;
+ /*** The quote of the day port value of 17 according to RFC 865. ***/
+ public static final int QUOTE_OF_DAY_PORT = 17;
+ /*** The character generator port value of 19 according to RFC 864. ***/
+ public static final int CHARGEN_PORT = 19;
+ /*** The default chargen port. It is set to 19 according to RFC 864. ***/
+ public static final int DEFAULT_PORT = 19;
+
+ private byte[] __receiveData;
+ private DatagramPacket __receivePacket;
+ private DatagramPacket __sendPacket;
+
+ /***
+ * The default CharGenUDPClient constructor. It initializes some internal
+ * data structures for sending and receiving the necessary datagrams for
+ * the chargen and related protocols.
+ ***/
+ public CharGenUDPClient()
+ {
+ // CharGen return packets have a maximum length of 512
+ __receiveData = new byte[512];
+ __receivePacket = new DatagramPacket(__receiveData, 512);
+ __sendPacket = new DatagramPacket(new byte[0], 0);
+ }
+
+
+ /***
+ * Sends the data initiation datagram. This data in the packet is ignored
+ * by the server, and merely serves to signal that the server should send
+ * its reply.
+ * <p>
+ * @param host The address of the server.
+ * @param port The port of the service.
+ * @exception IOException If an error occurs while sending the datagram.
+ ***/
+ public void send(InetAddress host, int port) throws IOException
+ {
+ __sendPacket.setAddress(host);
+ __sendPacket.setPort(port);
+ _socket_.send(__sendPacket);
+ }
+
+ /*** Same as <code>send(host, CharGenUDPClient.DEFAULT_PORT);</code> ***/
+ public void send(InetAddress host) throws IOException
+ {
+ send(host, DEFAULT_PORT);
+ }
+
+ /***
+ * Receive the reply data from the server. This will always be 512 bytes
+ * or less. Chargen and quote of the day only return one packet. Netstat
+ * and systat require multiple calls to receive() with timeout detection.
+ * <p>
+ * @return The reply data from the server.
+ * @exception IOException If an error occurs while receiving the datagram.
+ ***/
+ public byte[] receive() throws IOException
+ {
+ int length;
+ byte[] result;
+
+ _socket_.receive(__receivePacket);
+
+ result = new byte[length = __receivePacket.getLength()];
+ System.arraycopy(__receiveData, 0, result, 0, length);
+
+ return result;
+ }
+
+}
+
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