| 1 | /* FTPURLConnection.java -- |
| 2 | Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GNU Classpath. |
| 5 | |
| 6 | GNU Classpath is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GNU Classpath is distributed in the hope that it will be useful, but |
| 12 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Classpath; see the file COPYING. If not, write to the |
| 18 | Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 19 | 02110-1301 USA. |
| 20 | |
| 21 | Linking this library statically or dynamically with other modules is |
| 22 | making a combined work based on this library. Thus, the terms and |
| 23 | conditions of the GNU General Public License cover the whole |
| 24 | combination. |
| 25 | |
| 26 | As a special exception, the copyright holders of this library give you |
| 27 | permission to link this library with independent modules to produce an |
| 28 | executable, regardless of the license terms of these independent |
| 29 | modules, and to copy and distribute the resulting executable under |
| 30 | terms of your choice, provided that you also meet, for each linked |
| 31 | independent module, the terms and conditions of the license of that |
| 32 | module. An independent module is a module which is not derived from |
| 33 | or based on this library. If you modify this library, you may extend |
| 34 | this exception to your version of the library, but you are not |
| 35 | obligated to do so. If you do not wish to do so, delete this |
| 36 | exception statement from your version. */ |
| 37 | |
| 38 | |
| 39 | package gnu.java.net.protocol.ftp; |
| 40 | |
| 41 | import gnu.classpath.SystemProperties; |
| 42 | import gnu.java.net.GetLocalHostAction; |
| 43 | |
| 44 | import java.io.FilterInputStream; |
| 45 | import java.io.FilterOutputStream; |
| 46 | import java.io.IOException; |
| 47 | import java.io.InputStream; |
| 48 | import java.io.OutputStream; |
| 49 | import java.net.InetAddress; |
| 50 | import java.net.URL; |
| 51 | import java.net.URLConnection; |
| 52 | import java.security.AccessController; |
| 53 | import java.util.HashMap; |
| 54 | import java.util.Map; |
| 55 | |
| 56 | /** |
| 57 | * An FTP URL connection. |
| 58 | * |
| 59 | * @author Chris Burdess (dog@gnu.org) |
| 60 | */ |
| 61 | public class FTPURLConnection |
| 62 | extends URLConnection |
| 63 | { |
| 64 | |
| 65 | /** |
| 66 | * The connection managing the protocol exchange. |
| 67 | */ |
| 68 | protected FTPConnection connection; |
| 69 | |
| 70 | protected boolean passive; |
| 71 | protected int representationType; |
| 72 | protected int fileStructure; |
| 73 | protected int transferMode; |
| 74 | |
| 75 | /** |
| 76 | * Constructs an FTP connection to the specified URL. |
| 77 | * @param url the URL |
| 78 | */ |
| 79 | public FTPURLConnection(URL url) |
| 80 | { |
| 81 | super(url); |
| 82 | passive = true; |
| 83 | representationType = FTPConnection.TYPE_BINARY; |
| 84 | fileStructure = -1; |
| 85 | transferMode = -1; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Establishes the connection. |
| 90 | */ |
| 91 | public void connect() |
| 92 | throws IOException |
| 93 | { |
| 94 | if (connected) |
| 95 | { |
| 96 | return; |
| 97 | } |
| 98 | String host = url.getHost(); |
| 99 | int port = url.getPort(); |
| 100 | String username = url.getUserInfo(); |
| 101 | String password = null; |
| 102 | if (username != null) |
| 103 | { |
| 104 | int ci = username.indexOf(':'); |
| 105 | if (ci != -1) |
| 106 | { |
| 107 | password = username.substring(ci + 1); |
| 108 | username = username.substring(0, ci); |
| 109 | } |
| 110 | } |
| 111 | else |
| 112 | { |
| 113 | username = "anonymous"; |
| 114 | GetLocalHostAction a = new GetLocalHostAction(); |
| 115 | InetAddress localhost =(InetAddress) AccessController.doPrivileged(a); |
| 116 | password = SystemProperties.getProperty("user.name") + "@" + |
| 117 | ((localhost == null) ? "localhost" : localhost.getHostName()); |
| 118 | } |
| 119 | connection = new FTPConnection(host, port); |
| 120 | if (!connection.authenticate(username, password)) |
| 121 | { |
| 122 | throw new SecurityException("Authentication failed"); |
| 123 | } |
| 124 | connection.setPassive(passive); |
| 125 | if (representationType != -1) |
| 126 | { |
| 127 | connection.setRepresentationType(representationType); |
| 128 | } |
| 129 | if (fileStructure != -1) |
| 130 | { |
| 131 | connection.setFileStructure(fileStructure); |
| 132 | } |
| 133 | if (transferMode != -1) |
| 134 | { |
| 135 | connection.setTransferMode(transferMode); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * This connection supports doInput. |
| 141 | */ |
| 142 | public void setDoInput(boolean doinput) |
| 143 | { |
| 144 | doInput = doinput; |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * This connection supports doOutput. |
| 149 | */ |
| 150 | public void setDoOutput(boolean dooutput) |
| 151 | { |
| 152 | doOutput = dooutput; |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * Returns an input stream that reads from this open connection. |
| 157 | */ |
| 158 | public InputStream getInputStream() |
| 159 | throws IOException |
| 160 | { |
| 161 | if (!connected) |
| 162 | { |
| 163 | connect(); |
| 164 | } |
| 165 | String path = url.getPath(); |
| 166 | if (connection.changeWorkingDirectory(path)) |
| 167 | { |
| 168 | return this.new ClosingInputStream(connection.list(null)); |
| 169 | } |
| 170 | else |
| 171 | { |
| 172 | return this.new ClosingInputStream(connection.retrieve(path)); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Returns an output stream that writes to this connection. |
| 178 | */ |
| 179 | public OutputStream getOutputStream() |
| 180 | throws IOException |
| 181 | { |
| 182 | if (!connected) |
| 183 | { |
| 184 | connect(); |
| 185 | } |
| 186 | String path = url.getPath(); |
| 187 | return this.new ClosingOutputStream(connection.store(path)); |
| 188 | } |
| 189 | |
| 190 | public String getRequestProperty(String key) |
| 191 | { |
| 192 | if ("passive".equals(key)) |
| 193 | { |
| 194 | return Boolean.toString(passive); |
| 195 | } |
| 196 | else if ("representationType".equals(key)) |
| 197 | { |
| 198 | switch (representationType) |
| 199 | { |
| 200 | case FTPConnection.TYPE_ASCII: |
| 201 | return "ASCII"; |
| 202 | case FTPConnection.TYPE_EBCDIC: |
| 203 | return "EBCDIC"; |
| 204 | case FTPConnection.TYPE_BINARY: |
| 205 | return "BINARY"; |
| 206 | } |
| 207 | } |
| 208 | else if ("fileStructure".equals(key)) |
| 209 | { |
| 210 | switch (fileStructure) |
| 211 | { |
| 212 | case FTPConnection.STRUCTURE_FILE: |
| 213 | return "FILE"; |
| 214 | case FTPConnection.STRUCTURE_RECORD: |
| 215 | return "RECORD"; |
| 216 | case FTPConnection.STRUCTURE_PAGE: |
| 217 | return "PAGE"; |
| 218 | } |
| 219 | } |
| 220 | else if ("transferMode".equals(key)) |
| 221 | { |
| 222 | switch (transferMode) |
| 223 | { |
| 224 | case FTPConnection.MODE_STREAM: |
| 225 | return "STREAM"; |
| 226 | case FTPConnection.MODE_BLOCK: |
| 227 | return "BLOCK"; |
| 228 | case FTPConnection.MODE_COMPRESSED: |
| 229 | return "COMPRESSED"; |
| 230 | } |
| 231 | } |
| 232 | return null; |
| 233 | } |
| 234 | |
| 235 | public Map getRequestProperties() |
| 236 | { |
| 237 | Map map = new HashMap(); |
| 238 | addRequestPropertyValue(map, "passive"); |
| 239 | addRequestPropertyValue(map, "representationType"); |
| 240 | addRequestPropertyValue(map, "fileStructure"); |
| 241 | addRequestPropertyValue(map, "transferMode"); |
| 242 | return map; |
| 243 | } |
| 244 | |
| 245 | private void addRequestPropertyValue(Map map, String key) |
| 246 | { |
| 247 | String value = getRequestProperty(key); |
| 248 | map.put(key, value); |
| 249 | } |
| 250 | |
| 251 | public void setRequestProperty(String key, String value) |
| 252 | { |
| 253 | if (connected) |
| 254 | { |
| 255 | throw new IllegalStateException(); |
| 256 | } |
| 257 | if ("passive".equals(key)) |
| 258 | { |
| 259 | passive = Boolean.valueOf(value).booleanValue(); |
| 260 | } |
| 261 | else if ("representationType".equals(key)) |
| 262 | { |
| 263 | if ("A".equalsIgnoreCase(value) || |
| 264 | "ASCII".equalsIgnoreCase(value)) |
| 265 | { |
| 266 | representationType = FTPConnection.TYPE_ASCII; |
| 267 | } |
| 268 | else if ("E".equalsIgnoreCase(value) || |
| 269 | "EBCDIC".equalsIgnoreCase(value)) |
| 270 | { |
| 271 | representationType = FTPConnection.TYPE_EBCDIC; |
| 272 | } |
| 273 | else if ("I".equalsIgnoreCase(value) || |
| 274 | "BINARY".equalsIgnoreCase(value)) |
| 275 | { |
| 276 | representationType = FTPConnection.TYPE_BINARY; |
| 277 | } |
| 278 | else |
| 279 | { |
| 280 | throw new IllegalArgumentException(value); |
| 281 | } |
| 282 | } |
| 283 | else if ("fileStructure".equals(key)) |
| 284 | { |
| 285 | if ("F".equalsIgnoreCase(value) || |
| 286 | "FILE".equalsIgnoreCase(value)) |
| 287 | { |
| 288 | fileStructure = FTPConnection.STRUCTURE_FILE; |
| 289 | } |
| 290 | else if ("R".equalsIgnoreCase(value) || |
| 291 | "RECORD".equalsIgnoreCase(value)) |
| 292 | { |
| 293 | fileStructure = FTPConnection.STRUCTURE_RECORD; |
| 294 | } |
| 295 | else if ("P".equalsIgnoreCase(value) || |
| 296 | "PAGE".equalsIgnoreCase(value)) |
| 297 | { |
| 298 | fileStructure = FTPConnection.STRUCTURE_PAGE; |
| 299 | } |
| 300 | else |
| 301 | { |
| 302 | throw new IllegalArgumentException(value); |
| 303 | } |
| 304 | } |
| 305 | else if ("transferMode".equals(key)) |
| 306 | { |
| 307 | if ("S".equalsIgnoreCase(value) || |
| 308 | "STREAM".equalsIgnoreCase(value)) |
| 309 | { |
| 310 | transferMode = FTPConnection.MODE_STREAM; |
| 311 | } |
| 312 | else if ("B".equalsIgnoreCase(value) || |
| 313 | "BLOCK".equalsIgnoreCase(value)) |
| 314 | { |
| 315 | transferMode = FTPConnection.MODE_BLOCK; |
| 316 | } |
| 317 | else if ("C".equalsIgnoreCase(value) || |
| 318 | "COMPRESSED".equalsIgnoreCase(value)) |
| 319 | { |
| 320 | transferMode = FTPConnection.MODE_COMPRESSED; |
| 321 | } |
| 322 | else |
| 323 | { |
| 324 | throw new IllegalArgumentException(value); |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | public void addRequestProperty(String key, String value) |
| 330 | { |
| 331 | setRequestProperty(key, value); |
| 332 | } |
| 333 | |
| 334 | class ClosingInputStream |
| 335 | extends FilterInputStream |
| 336 | { |
| 337 | |
| 338 | ClosingInputStream(InputStream in) |
| 339 | { |
| 340 | super(in); |
| 341 | } |
| 342 | |
| 343 | public void close() |
| 344 | throws IOException |
| 345 | { |
| 346 | super.close(); |
| 347 | connection.logout(); |
| 348 | } |
| 349 | |
| 350 | } |
| 351 | |
| 352 | class ClosingOutputStream |
| 353 | extends FilterOutputStream |
| 354 | { |
| 355 | |
| 356 | ClosingOutputStream(OutputStream out) |
| 357 | { |
| 358 | super(out); |
| 359 | } |
| 360 | |
| 361 | public void close() |
| 362 | throws IOException |
| 363 | { |
| 364 | super.close(); |
| 365 | connection.logout(); |
| 366 | } |
| 367 | |
| 368 | } |
| 369 | |
| 370 | } |
| 371 | |