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16 package org.apache.commons.net.telnet;
17
18 import java.io.InputStream;
19 import java.io.OutputStream;
20
21
22 /***
23 * Simple stream responder.
24 * Waits for strings on an input stream and answers
25 * sending corresponfing strings on an output stream.
26 * The reader runs in a separate thread.
27 * <p>
28 * @author Bruno D'Avanzo
29 ***/
30 public class TelnetTestResponder implements Runnable
31 {
32 InputStream _is;
33 OutputStream _os;
34 String _inputs[], _outputs[];
35 long _timeout;
36
37 /***
38 * Constructor.
39 * Starts a new thread for the reader.
40 * <p>
41 * @param is - InputStream on which to read.
42 * @param os - OutputStream on which to answer.
43 * @param inputs - Array of waited for Strings.
44 * @param inputs - Array of answers.
45 ***/
46 public TelnetTestResponder(InputStream is, OutputStream os, String inputs[], String outputs[], long timeout)
47 {
48 _is = is;
49 _os = os;
50 _timeout = timeout;
51 _inputs = inputs;
52 _outputs = outputs;
53 Thread reader = new Thread (this);
54
55 reader.start();
56 }
57
58 /***
59 * Runs the responder
60 ***/
61 public void run()
62 {
63 boolean result = false;
64 byte buffer[] = new byte[32];
65 long starttime = System.currentTimeMillis();
66
67 try
68 {
69 String readbytes = new String();
70 while(!result &&
71 ((System.currentTimeMillis() - starttime) < _timeout))
72 {
73 if(_is.available() > 0)
74 {
75 int ret_read = _is.read(buffer);
76 readbytes = readbytes + new String(buffer, 0, ret_read);
77
78 for(int ii=0; ii<_inputs.length; ii++)
79 {
80 if(readbytes.indexOf(_inputs[ii]) >= 0)
81 {
82 Thread.sleep(1000 * ii);
83 _os.write(_outputs[ii].getBytes());
84 result = true;
85 }
86 }
87 }
88 else
89 {
90 Thread.sleep(500);
91 }
92 }
93
94 }
95 catch (Exception e)
96 {
97 System.err.println("Error while waiting endstring. " + e.getMessage());
98 }
99 }
100 }