Mercurial > 510Connectbot
annotate src/org/tn5250j/framework/tn5250/DataStreamProducer.java @ 185:c51bcf9f0516
setfield positions the cursor properly as if the characters were typed
author | Carl Byington <carl@five-ten-sg.com> |
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date | Wed, 02 Jul 2014 14:46:16 -0700 |
parents | 77ac18bc1b2f |
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3 | 1 package org.tn5250j.framework.tn5250; |
2 | |
3 import java.io.BufferedInputStream; | |
4 import java.io.BufferedOutputStream; | |
5 import java.io.ByteArrayOutputStream; | |
6 import java.io.EOFException; | |
7 import java.io.FileNotFoundException; | |
8 import java.io.FileOutputStream; | |
9 import java.io.IOException; | |
10 import java.net.SocketException; | |
11 import java.util.concurrent.BlockingQueue; | |
12 | |
13 import org.tn5250j.encoding.ICodePage; | |
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14 |
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15 import android.util.Log; |
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16 |
3 | 17 |
18 public class DataStreamProducer implements Runnable { | |
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19 private static final String TAG = "DataStreamProducer"; |
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20 private tnvt vt; |
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21 private BufferedInputStream bin; |
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22 private ByteArrayOutputStream baosin; |
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23 private Thread me; |
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24 private byte[] saveStream; |
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25 private final BlockingQueue<Object> dsq; |
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26 private byte[] abyte2; |
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27 private FileOutputStream fw; |
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28 private BufferedOutputStream dw; |
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29 private boolean dumpBytes = false; |
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30 private ICodePage codePage; |
3 | 31 |
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32 |
3 | 33 |
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34 public DataStreamProducer(tnvt vt, BufferedInputStream bin, BlockingQueue<Object> queue, byte[] init) { |
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35 this.bin = bin; |
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36 this.vt = vt; |
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37 baosin = new ByteArrayOutputStream(); |
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38 dsq = queue; |
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39 abyte2 = init; |
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40 } |
3 | 41 |
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42 public void setInputStream(ByteArrayOutputStream is) { |
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43 baosin = is; |
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44 } |
3 | 45 |
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46 public final void run() { |
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47 boolean done = false; |
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48 me = Thread.currentThread(); |
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49 // load the first response screen |
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50 loadStream(abyte2, 0); |
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51 |
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52 while (!done) { |
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53 try { |
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54 byte[] abyte0 = readIncoming(); |
3 | 55 |
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56 // WVL - LDC : 17/05/2004 : Device name negotiations send TIMING MARK |
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57 // Restructured to the readIncoming() method to return null |
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58 // on TIMING MARK. Don't process in that case (abyte0 == null)! |
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59 if (abyte0 != null) { |
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60 // WVL - LDC : 16/07/2003 : TR.000345 |
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61 // When the socket has been closed, the reading returns |
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62 // no bytes (an empty byte arrray). |
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63 // But the loadStream fails on this, so we check it here! |
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64 if (abyte0.length > 0) { |
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65 loadStream(abyte0, 0); |
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66 } |
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67 // WVL - LDC : 16/07/2003 : TR.000345 |
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68 // Returning no bytes means the input buffer has |
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69 // reached end-of-stream, so we do a disconnect! |
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70 else { |
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71 done = true; |
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72 vt.disconnect(); |
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73 } |
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74 } |
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75 } |
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76 catch (SocketException se) { |
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77 Log.w(TAG, " DataStreamProducer thread interrupted and stopping " + se.getMessage()); |
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78 done = true; |
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79 } |
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80 catch (IOException ioe) { |
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81 Log.w(TAG, ioe.getMessage()); |
3 | 82 |
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83 if (me.isInterrupted()) |
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84 done = true; |
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85 } |
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86 catch (Exception ex) { |
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87 Log.w(TAG, ex.getMessage()); |
3 | 88 |
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89 if (me.isInterrupted()) |
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90 done = true; |
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91 } |
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92 } |
3 | 93 } |
94 | |
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95 private final void loadStream(byte abyte0[], int i) { |
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96 int j = 0; |
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97 int size = 0; |
3 | 98 |
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99 if (saveStream == null) { |
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100 j = (abyte0[i] & 0xff) << 8 | abyte0[i + 1] & 0xff; |
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101 size = abyte0.length; |
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102 } |
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103 else { |
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104 size = saveStream.length + abyte0.length; |
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105 byte[] inter = new byte[size]; |
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106 System.arraycopy(saveStream, 0, inter, 0, saveStream.length); |
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107 System.arraycopy(abyte0, 0, inter, saveStream.length, abyte0.length); |
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108 abyte0 = new byte[size]; |
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109 System.arraycopy(inter, 0, abyte0, 0, size); |
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110 saveStream = null; |
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111 inter = null; |
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112 j = (abyte0[i] & 0xff) << 8 | abyte0[i + 1] & 0xff; |
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113 Log.d(TAG, "partial stream found"); |
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114 } |
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116 if (j > size) { |
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117 saveStream = new byte[abyte0.length]; |
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118 System.arraycopy(abyte0, 0, saveStream, 0, abyte0.length); |
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119 Log.d(TAG, "partial stream saved"); |
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120 } |
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121 else { |
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122 byte abyte1[]; |
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124 try { |
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125 abyte1 = new byte[j + 2]; |
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126 System.arraycopy(abyte0, i, abyte1, 0, j + 2); |
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127 dsq.put(abyte1); |
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129 if (abyte0.length > abyte1.length + i) |
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130 loadStream(abyte0, i + j + 2); |
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131 } |
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132 catch (Exception ex) { |
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133 Log.w(TAG, "load stream error " + ex.getMessage()); |
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134 // ex.printStackTrace(); |
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135 // dump(abyte0); |
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136 } |
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137 } |
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138 } |
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140 public final byte[] readIncoming() |
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141 throws IOException { |
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142 boolean done = false; |
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143 boolean negotiate = false; |
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144 baosin.reset(); |
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145 int j = -1; |
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146 int i = 0; |
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148 while (!done) { |
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149 i = bin.read(); |
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151 // WVL - LDC : 16/07/2003 : TR.000345 |
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152 // The inStream return -1 when end-of-stream is reached. This |
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153 // happens e.g. when the connection is closed from the AS/400. |
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154 // So we stop in this case! |
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155 // ==> an empty byte array is returned from this method. |
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156 if (i == -1) { // nothing read! |
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157 done = true; |
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158 vt.disconnect(); |
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159 continue; |
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160 } |
3 | 161 |
112
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162 // We use the values instead of the static values IAC and EOR |
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163 // because they are defined as bytes. |
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164 // |
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165 // The > if(i != 255 || j != 255) < is a hack for the double FF FF's |
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166 // that are being returned. I do not know why this is like this and |
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167 // can not find any documentation for it. It is also being returned |
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168 // on my Client Access tcp dump as well so they are handling it. |
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169 // |
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170 // my5250 |
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171 // 0000: 00 50 DA 44 C8 45 42 00 00 00 00 24 08 00 45 00 .P.D.EB....$..E. |
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172 // 0010: 04 2A BC F9 00 00 40 06 D0 27 C1 A8 33 04 C1 A8 .*....@..'..3... |
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173 // 0020: 33 58 00 17 04 18 6F A2 83 CB 00 1E D1 BA 50 18 3X....o.......P. |
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174 // 0030: 20 00 8A 9A 00 00 03 FF FF 12 A0 00 00 04 00 00 ............... |
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175 // --------------------------- || || ------------------------------------- |
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176 // 0040: 03 04 40 04 11 00 20 01 07 00 00 00 18 00 00 10 ..@... ......... |
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177 |
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178 if (j == 255 && i == 255) { |
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179 j = -1; |
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180 continue; |
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181 } |
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182 |
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183 baosin.write(i); |
3 | 184 |
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185 // check for end of record EOR and IAC - FFEF |
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186 if (j == 255 && i == 239) |
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187 done = true; |
3 | 188 |
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189 // This is to check for the TELNET TIMING MARK OPTION |
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190 // rfc860 explains this in more detail. When we receive it |
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191 // we will negotiate with the server by sending a WONT'T TIMING-MARK |
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192 // This will let the server know that we processed the information |
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193 // and are just waiting for the user to enter some data so keep the |
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194 // socket alive. This is more or less a AYT (ARE YOU THERE) or not. |
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195 if (i == 253 && j == 255) { |
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196 done = true; |
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197 negotiate = true; |
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198 } |
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199 |
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200 j = i; |
3 | 201 } |
202 | |
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203 // after the initial negotiation we might get other options such as |
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204 // timing marks ?????????????? do we ???????????? look at telnet spec |
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205 // yes we do. rfc860 explains about timing marks. |
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206 // WVL - LDC : 17/05/2004 : Device name negotiations send TIMING MARK |
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207 // to existing device! |
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208 // Handled incorrectly: we cannot continue processing the TIMING MARK DO |
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209 // after we have handled it in the vt.negotiate() |
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210 // We should not return the bytes; |
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211 // ==> restructured to return null after negotiation! |
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212 // Impacts the run method! Added the null check. |
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213 byte[] rBytes = baosin.toByteArray(); |
3 | 214 |
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215 if (dumpBytes) { |
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216 dump(rBytes); |
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217 } |
3 | 218 |
112
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219 if (negotiate) { |
3 | 220 // get the negotiation option |
221 baosin.write(bin.read()); | |
222 vt.negotiate(rBytes); | |
112
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223 return null; |
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224 } |
3 | 225 |
112
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226 return rBytes; |
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227 } |
3 | 228 |
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229 protected final void toggleDebug(ICodePage cp) { |
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230 if (codePage == null) |
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231 codePage = cp; |
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232 |
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233 dumpBytes = !dumpBytes; |
3 | 234 |
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235 if (dumpBytes) { |
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236 try { |
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237 if (fw == null) { |
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238 fw = new FileOutputStream("log.txt"); |
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239 dw = new BufferedOutputStream(fw); |
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240 } |
3 | 241 } |
112
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242 catch (FileNotFoundException fnfe) { |
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243 Log.w(TAG, fnfe.getMessage()); |
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244 } |
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245 } |
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246 else { |
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247 try { |
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248 if (dw != null) |
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249 dw.close(); |
3 | 250 |
112
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251 if (fw != null) |
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252 fw.close(); |
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253 |
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254 dw = null; |
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255 fw = null; |
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256 codePage = null; |
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257 } |
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258 catch (IOException ioe) { |
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259 Log.w(TAG, ioe.getMessage()); |
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260 } |
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261 } |
3 | 262 |
112
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263 Log.i(TAG, "Data Stream output is now " + dumpBytes); |
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264 } |
3 | 265 |
112
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266 public void dump(byte[] abyte0) { |
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267 try { |
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268 Log.i(TAG, "\n Buffer Dump of data from AS400: "); |
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269 dw.write("\r\n Buffer Dump of data from AS400: ".getBytes()); |
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270 StringBuffer h = new StringBuffer(); |
3 | 271 |
112
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272 for (int x = 0; x < abyte0.length; x++) { |
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273 if (x % 16 == 0) { |
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274 System.out.println(" " + h.toString()); |
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275 dw.write((" " + h.toString() + "\r\n").getBytes()); |
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276 h.setLength(0); |
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277 h.append("+0000"); |
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278 h.setLength(5 - Integer.toHexString(x).length()); |
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279 h.append(Integer.toHexString(x).toUpperCase()); |
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280 System.out.print(h.toString()); |
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281 dw.write(h.toString().getBytes()); |
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282 h.setLength(0); |
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283 } |
3 | 284 |
112
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285 char ac = codePage.ebcdic2uni(abyte0[x]); |
3 | 286 |
112
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287 if (ac < ' ') |
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288 h.append('.'); |
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289 else |
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290 h.append(ac); |
3 | 291 |
112
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292 if (x % 4 == 0) { |
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293 System.out.print(" "); |
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294 dw.write((" ").getBytes()); |
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295 } |
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296 |
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297 if (Integer.toHexString(abyte0[x] & 0xff).length() == 1) { |
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298 System.out.print("0" + Integer.toHexString(abyte0[x] & 0xff).toUpperCase()); |
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299 dw.write(("0" + Integer.toHexString(abyte0[x] & 0xff).toUpperCase()).getBytes()); |
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300 } |
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301 else { |
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302 System.out.print(Integer.toHexString(abyte0[x] & 0xff).toUpperCase()); |
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303 dw.write((Integer.toHexString(abyte0[x] & 0xff).toUpperCase()).getBytes()); |
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304 } |
3 | 305 } |
306 | |
112
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307 System.out.println(); |
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308 dw.write("\r\n".getBytes()); |
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309 dw.flush(); |
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310 } |
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311 catch (EOFException _ex) { } |
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312 catch (Exception _ex) { |
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313 Log.w(TAG, "Cannot dump from host\n\r"); |
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314 } |
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315 } |
3 | 316 |
317 // public void dumpBytes() { | |
318 // byte shit[] = bk.buffer; | |
319 // for (int i = 0;i < shit.length;i++) | |
320 // System.out.println(i + ">" + shit[i] + "< - ascii - >" + getASCIIChar(shit[i]) + "<"); | |
321 // } | |
322 // | |
323 // public void dumpHexBytes(byte[] abyte) { | |
324 // byte shit[] = abyte; | |
325 // for (int i = 0;i < shit.length;i++) | |
326 // System.out.println(i + ">" + shit[i] + "< hex >" + Integer.toHexString((shit[i] & 0xff))); | |
327 // } | |
328 | |
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329 } |