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11
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1 /*
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2 * 510ConnectBot
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3 * Copyright 2014 Carl Byington
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4 *
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5 * Licensed under the Apache License, Version 2.0 (the "License");
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6 * you may not use this file except in compliance with the License.
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7 * You may obtain a copy of the License at
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8 *
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9 * http://www.apache.org/licenses/LICENSE-2.0
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10 *
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11 * Unless required by applicable law or agreed to in writing, software
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12 * distributed under the License is distributed on an "AS IS" BASIS,
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13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 * See the License for the specific language governing permissions and
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15 * limitations under the License.
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16 */
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17
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18 package com.five_ten_sg.connectbot.transport;
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19
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20 import java.io.IOException;
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21 import java.io.InputStream;
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22 import java.io.OutputStream;
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23 import java.net.Socket;
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24 import java.net.SocketException;
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13
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25 import java.net.UnknownHostException;
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11
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26 import java.util.List;
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27 import java.util.Map;
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13
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28 import java.util.regex.Matcher;
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29 import java.util.regex.Pattern;
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11
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30
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12
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31 import org.tn5250j.framework.tn5250.Screen5250;
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32 import org.tn5250j.framework.tn5250.tnvt;
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33
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13
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34 import com.five_ten_sg.connectbot.R;
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11
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35 import com.five_ten_sg.connectbot.bean.HostBean;
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36 import com.five_ten_sg.connectbot.bean.PortForwardBean;
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37 import com.five_ten_sg.connectbot.service.TerminalBridge;
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38 import com.five_ten_sg.connectbot.service.TerminalManager;
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39 import com.five_ten_sg.connectbot.util.HostDatabase;
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40
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41 import android.content.Context;
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42 import android.net.Uri;
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13
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43 import android.util.Log;
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11
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44
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45
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46 /**
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47 * @author Carl Byington
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48 *
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49 */
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50 public class TN5250 extends AbsTransport {
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51 private static final String PROTOCOL = "tn5250";
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52 private static final String TAG = "ConnectBot.tn5250";
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53 private static final int DEFAULT_PORT = 23;
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54 private Screen5250 screen52;
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55
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56 private tnvt handler = null;
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57 private Socket socket;
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58
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59 private InputStream is;
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60 private OutputStream os;
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61 private int width;
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62 private int height;
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63
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64 private boolean connected = false;
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65
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12
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66 static final Pattern hostmask;
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67 static {
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68 hostmask = Pattern.compile("^([0-9a-z.-]+)(:(\\d+))?$", Pattern.CASE_INSENSITIVE);
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69 }
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70
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71
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72 public TN5250() {
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73 super();
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74 }
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75
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76 public TN5250(HostBean host, TerminalBridge bridge, TerminalManager manager) {
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77 super(host, bridge, manager);
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78 handler = new tnvt(screen52, true, false, bridge, manager);
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79 }
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80
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81
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82 /**
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83 * @return protocol part of the URI
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84 */
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85 public static String getProtocolName() {
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86 return PROTOCOL;
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87 }
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88
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89 public Uri getUri(String input) {
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90 Matcher matcher = hostmask.matcher(input);
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91
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92 if (!matcher.matches())
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93 return null;
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94
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95 StringBuilder sb = new StringBuilder();
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96 sb.append(PROTOCOL)
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97 .append("://")
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98 .append(matcher.group(1));
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99 String portString = matcher.group(3);
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100 int port = DEFAULT_PORT;
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101
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102 if (portString != null) {
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103 try {
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104 port = Integer.parseInt(portString);
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105
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106 if (port < 1 || port > 65535) {
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107 port = DEFAULT_PORT;
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108 }
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109 }
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110 catch (NumberFormatException nfe) {
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111 // Keep the default port
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112 }
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113 }
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114
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115 if (port != DEFAULT_PORT) {
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116 sb.append(':');
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117 sb.append(port);
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118 }
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119
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120 sb.append("/#")
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121 .append(Uri.encode(input));
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122 Uri uri = Uri.parse(sb.toString());
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123 return uri;
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124 }
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125
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126 /**
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127 * Causes transport to connect to the target host. After connecting but before a
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128 * session is started, must call back to {@link TerminalBridge#onConnected()}.
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129 * After that call a session may be opened.
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130 */
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131 @Override
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132 public void connect() {
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23
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133 connected = handler.connect(host.getHostname(), host.getPort());
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134 if (connected) {
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135 is = handler.bin;
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136 os = handler.bout;
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137 bridge.onConnected();
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138 }
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139 }
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140
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141
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142 /**
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143 * Checks if read() will block. If there are no bytes remaining in
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144 * the underlying transport, return true.
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145 */
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146 @Override
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147 public boolean willBlock() {
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148 if (is == null) return true;
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149 try {
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150 return is.available() == 0;
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151 } catch (Exception e) {
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152 return true;
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153 }
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154 }
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155
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156 /**
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157 * Reads from the transport. Transport must support reading into a byte array
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158 * <code>buffer</code> at the start of <code>offset</code> and a maximum of
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159 * <code>length</code> bytes. If the remote host disconnects, throw an
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160 * {@link IOException}.
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161 * @param buffer byte buffer to store read bytes into
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162 * @param offset where to start writing in the buffer
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163 * @param length maximum number of bytes to read
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164 * @return number of bytes read
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165 * @throws IOException when remote host disconnects
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166 */
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167 public int read(byte[] buffer, int offset, int length) throws IOException {
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168 return 0;
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169 }
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170
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171
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172 /**
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173 * Writes to the transport. If the host is not yet connected, simply return without
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174 * doing anything. An {@link IOException} should be thrown if there is an error after
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175 * connection.
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176 * @param buffer bytes to write to transport
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177 * @throws IOException when there is a problem writing after connection
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178 */
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179 public void write(byte[] buffer) throws IOException {
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180 }
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181
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182 /**
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183 * Writes to the transport. See {@link #write(byte[])} for behavior details.
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184 * @param c character to write to the transport
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185 * @throws IOException when there is a problem writing after connection
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186 */
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187 public void write(int c) throws IOException {
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188 }
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189
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190 /**
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191 * Flushes the write commands to the transport.
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192 * @throws IOException when there is a problem writing after connection
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193 */
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194 public void flush() throws IOException {
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195 }
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196
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197 /**
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198 * Closes the connection to the terminal. Note that the resulting failure to read
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199 * should call {@link TerminalBridge#dispatchDisconnect(boolean)}.
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200 */
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201 public void close() {
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202 handler.disconnect();
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203 connected = false;
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204 }
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205
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206 /**
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207 * Tells the transport what dimensions the display is currently
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208 * @param columns columns of text
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209 * @param rows rows of text
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210 * @param width width in pixels
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211 * @param height height in pixels
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212 */
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213 @Override
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214 public void setDimensions(int columns, int rows, int width, int height) {
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215 // do nothing
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216 }
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217
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218 public void setOptions(Map<String, String> options) {
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219 // do nothing
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220 }
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221
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222 public Map<String, String> getOptions() {
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223 return null;
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224 }
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225
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226 public void setCompression(boolean compression) {
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227 // do nothing
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228 }
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229
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230 public void setHttpproxy(String httpproxy) {
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231 // do nothing
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232 }
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233
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234 public void setUseAuthAgent(String useAuthAgent) {
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235 // do nothing
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236 }
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237
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238 public void setEmulation(String emulation) {
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239 this.emulation = emulation;
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240 }
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241
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242 public String getEmulation() {
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243 return emulation;
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244 }
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245
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246 public void setHost(HostBean host) {
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247 this.host = host;
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248 }
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249
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250 public void setBridge(TerminalBridge bridge) {
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251 this.bridge = bridge;
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252 }
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253
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254 public void setManager(TerminalManager manager) {
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255 this.manager = manager;
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256 }
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257
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258 /**
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259 * Whether or not this transport type can forward ports.
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260 * @return true on ability to forward ports
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261 */
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262 public boolean canForwardPorts() {
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263 return false;
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264 }
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265
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266 /**
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267 * Adds the {@link PortForwardBean} to the list.
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268 * @param portForward the port forward bean to add
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269 * @return true on successful addition
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270 */
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271 public boolean addPortForward(PortForwardBean portForward) {
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272 return false;
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273 }
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274
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275 /**
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276 * Enables a port forward member. After calling this method, the port forward should
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277 * be operational iff it could be enabled by the transport.
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278 * @param portForward member of our current port forwards list to enable
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279 * @return true on successful port forward setup
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280 */
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281 public boolean enablePortForward(PortForwardBean portForward) {
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282 return false;
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283 }
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284
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285 /**
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286 * Disables a port forward member. After calling this method, the port forward should
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287 * be non-functioning iff it could be disabled by the transport.
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288 * @param portForward member of our current port forwards list to enable
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289 * @return true on successful port forward tear-down
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290 */
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291 public boolean disablePortForward(PortForwardBean portForward) {
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292 return false;
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293 }
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294
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295 /**
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296 * Removes the {@link PortForwardBean} from the available port forwards.
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297 * @param portForward the port forward bean to remove
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298 * @return true on successful removal
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299 */
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300 public boolean removePortForward(PortForwardBean portForward) {
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301 return false;
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302 }
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303
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304 /**
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305 * Gets a list of the {@link PortForwardBean} currently used by this transport.
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306 * @return the list of port forwards
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307 */
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308 public List<PortForwardBean> getPortForwards() {
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309 return null;
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310 }
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311
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312 /**
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313 * Whether or not this transport type can transfer files.
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314 * @return true on ability to transfer files
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315 */
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316 public boolean canTransferFiles() {
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317 return false;
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318 }
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319
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320 /**
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321 * Downloads the specified remote file to a local folder.
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322 * @param remoteFile The path to the remote file to be downloaded. Must be non-null.
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323 * @param localFolder The path to local folder. Null = default external storage folder.
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324 * @return true on success, false on failure
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325 */
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326 public boolean downloadFile(String remoteFile, String localFolder) {
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327 return false;
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328 }
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329
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330 /**
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331 * Uploads the specified local file to the remote host.
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332 * @param localFile The path to the local file to be uploaded. Must be non-null.
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333 * @param remoteFolder The path to the remote directory. Null == default remote directory.
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334 * @return true on success, false on failure
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335 */
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336 public boolean uploadFile(String localFile, String remoteFile,
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337 String remoteFolder, String mode) {
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338 return false;
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339 }
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340
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341 @Override
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342 public int getDefaultPort() {
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343 return DEFAULT_PORT;
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344 }
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345
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346 @Override
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347 public boolean isConnected() {
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348 return connected;
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349 }
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350
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351 @Override
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352 public boolean isSessionOpen() {
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353 return connected;
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354 }
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355
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356 @Override
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357 public boolean isAuthenticated() {
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358 return connected;
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359 }
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360
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361
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362 @Override
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363 public String getDefaultNickname(String username, String hostname, int port) {
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364 if (port == DEFAULT_PORT) {
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365 return String.format("%s", hostname);
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366 }
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367 else {
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368 return String.format("%s:%d", hostname, port);
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369 }
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370 }
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371
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372 @Override
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373 public void getSelectionArgs(Uri uri, Map<String, String> selection) {
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374 selection.put(HostDatabase.FIELD_HOST_PROTOCOL, PROTOCOL);
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375 selection.put(HostDatabase.FIELD_HOST_NICKNAME, uri.getFragment());
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376 selection.put(HostDatabase.FIELD_HOST_HOSTNAME, uri.getHost());
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377 int port = uri.getPort();
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378
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379 if (port < 0)
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380 port = DEFAULT_PORT;
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381
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382 selection.put(HostDatabase.FIELD_HOST_PORT, Integer.toString(port));
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383 }
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384
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385
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386 @Override
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387 public HostBean createHost(Uri uri) {
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388 HostBean host = new HostBean();
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389 host.setProtocol(PROTOCOL);
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390 host.setHostname(uri.getHost());
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391 int port = uri.getPort();
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392
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393 if (port < 0)
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394 port = DEFAULT_PORT;
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395
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396 host.setPort(port);
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397 String nickname = uri.getFragment();
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398
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399 if (nickname == null || nickname.length() == 0) {
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400 host.setNickname(getDefaultNickname(host.getUsername(),
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401 host.getHostname(), host.getPort()));
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402 }
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403 else {
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404 host.setNickname(uri.getFragment());
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405 }
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406
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407 return host;
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408 }
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409
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410
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12
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411 public String getFormatHint(Context context) {
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11
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412 return String.format("%s:%s",
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413 context.getString(R.string.format_hostname),
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414 context.getString(R.string.format_port));
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415 }
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416
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417
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418 @Override
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419 public boolean usesNetwork() {
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420 return true;
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421 }
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422 }
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