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| 1 | /* | ||
| 2 | * Copyright (c) 1995, 2006, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package java.net; | ||
| 27 | |||
| 28 | import java.io.IOException; | ||
| 29 | import java.io.InputStream; | ||
| 30 | import java.io.File; | ||
| 31 | import java.io.OutputStream; | ||
| 32 | import java.util.Hashtable; | ||
| 33 | import sun.net.util.IPAddressUtil; | ||
| 34 | import sun.net.www.ParseUtil; | ||
| 35 | |||
| 36 | /** | ||
| 37 | * The abstract class <code>URLStreamHandler</code> is the common | ||
| 38 | * superclass for all stream protocol handlers. A stream protocol | ||
| 39 | * handler knows how to make a connection for a particular protocol | ||
| 40 | * type, such as <code>http</code>, <code>ftp</code>, or | ||
| 41 | * <code>gopher</code>. | ||
| 42 | * <p> | ||
| 43 | * In most cases, an instance of a <code>URLStreamHandler</code> | ||
| 44 | * subclass is not created directly by an application. Rather, the | ||
| 45 | * first time a protocol name is encountered when constructing a | ||
| 46 | * <code>URL</code>, the appropriate stream protocol handler is | ||
| 47 | * automatically loaded. | ||
| 48 | * | ||
| 49 | * @author James Gosling | ||
| 50 | * @see java.net.URL#URL(java.lang.String, java.lang.String, int, java.lang.String) | ||
| 51 | * @since JDK1.0 | ||
| 52 | */ | ||
| 53 | public abstract class URLStreamHandler { | ||
| 54 | /** | ||
| 55 | * Opens a connection to the object referenced by the | ||
| 56 | * <code>URL</code> argument. | ||
| 57 | * This method should be overridden by a subclass. | ||
| 58 | * | ||
| 59 | * <p>If for the handler's protocol (such as HTTP or JAR), there | ||
| 60 | * exists a public, specialized URLConnection subclass belonging | ||
| 61 | * to one of the following packages or one of their subpackages: | ||
| 62 | * java.lang, java.io, java.util, java.net, the connection | ||
| 63 | * returned will be of that subclass. For example, for HTTP an | ||
| 64 | * HttpURLConnection will be returned, and for JAR a | ||
| 65 | * JarURLConnection will be returned. | ||
| 66 | * | ||
| 67 | * @param u the URL that this connects to. | ||
| 68 | * @return a <code>URLConnection</code> object for the <code>URL</code>. | ||
| 69 | * @exception IOException if an I/O error occurs while opening the | ||
| 70 | * connection. | ||
| 71 | */ | ||
| 72 | abstract protected URLConnection openConnection(URL u) throws IOException; | ||
| 73 | |||
| 74 | /** | ||
| 75 | * Same as openConnection(URL), except that the connection will be | ||
| 76 | * made through the specified proxy; Protocol handlers that do not | ||
| 77 | * support proxying will ignore the proxy parameter and make a | ||
| 78 | * normal connection. | ||
| 79 | * | ||
| 80 | * Calling this method preempts the system's default ProxySelector | ||
| 81 | * settings. | ||
| 82 | * | ||
| 83 | * @param u the URL that this connects to. | ||
| 84 | * @param p the proxy through which the connection will be made. | ||
| 85 | * If direct connection is desired, Proxy.NO_PROXY | ||
| 86 | * should be specified. | ||
| 87 | * @return a <code>URLConnection</code> object for the <code>URL</code>. | ||
| 88 | * @exception IOException if an I/O error occurs while opening the | ||
| 89 | * connection. | ||
| 90 | * @exception IllegalArgumentException if either u or p is null, | ||
| 91 | * or p has the wrong type. | ||
| 92 | * @exception UnsupportedOperationException if the subclass that | ||
| 93 | * implements the protocol doesn't support this method. | ||
| 94 | * @since 1.5 | ||
| 95 | */ | ||
| 96 | protected URLConnection openConnection(URL u, Proxy p) throws IOException { | ||
| 97 | throw new UnsupportedOperationException("Method not implemented."); | ||
| 98 | } | ||
| 99 | |||
| 100 | /** | ||
| 101 | * Parses the string representation of a <code>URL</code> into a | ||
| 102 | * <code>URL</code> object. | ||
| 103 | * <p> | ||
| 104 | * If there is any inherited context, then it has already been | ||
| 105 | * copied into the <code>URL</code> argument. | ||
| 106 | * <p> | ||
| 107 | * The <code>parseURL</code> method of <code>URLStreamHandler</code> | ||
| 108 | * parses the string representation as if it were an | ||
| 109 | * <code>http</code> specification. Most URL protocol families have a | ||
| 110 | * similar parsing. A stream protocol handler for a protocol that has | ||
| 111 | * a different syntax must override this routine. | ||
| 112 | * | ||
| 113 | * @param u the <code>URL</code> to receive the result of parsing | ||
| 114 | * the spec. | ||
| 115 | * @param spec the <code>String</code> representing the URL that | ||
| 116 | * must be parsed. | ||
| 117 | * @param start the character index at which to begin parsing. This is | ||
| 118 | * just past the '<code>:</code>' (if there is one) that | ||
| 119 | * specifies the determination of the protocol name. | ||
| 120 | * @param limit the character position to stop parsing at. This is the | ||
| 121 | * end of the string or the position of the | ||
| 122 | * "<code>#</code>" character, if present. All information | ||
| 123 | * after the sharp sign indicates an anchor. | ||
| 124 | */ | ||
| 125 | protected void parseURL(URL u, String spec, int start, int limit) { | ||
| 126 | // These fields may receive context content if this was relative URL | ||
| 127 | String protocol = u.getProtocol(); | ||
| 128 | String authority = u.getAuthority(); | ||
| 129 | String userInfo = u.getUserInfo(); | ||
| 130 | String host = u.getHost(); | ||
| 131 | int port = u.getPort(); | ||
| 132 | String path = u.getPath(); | ||
| 133 | String query = u.getQuery(); | ||
| 134 | |||
| 135 | // This field has already been parsed | ||
| 136 | String ref = u.getRef(); | ||
| 137 | |||
| 138 | boolean isRelPath = false; | ||
| 139 | boolean queryOnly = false; | ||
| 140 | |||
| 141 | // FIX: should not assume query if opaque | ||
| 142 | // Strip off the query part | ||
| 143 | if (start < limit) { | ||
| 144 | int queryStart = spec.indexOf('?'); | ||
| 145 | queryOnly = queryStart == start; | ||
| 146 | if ((queryStart != -1) && (queryStart < limit)) { | ||
| 147 | query = spec.substring(queryStart+1, limit); | ||
| 148 | if (limit > queryStart) | ||
| 149 | limit = queryStart; | ||
| 150 | spec = spec.substring(0, queryStart); | ||
| 151 | } | ||
| 152 | } | ||
| 153 | |||
| 154 | int i = 0; | ||
| 155 | // Parse the authority part if any | ||
| 156 | boolean isUNCName = (start <= limit - 4) && | ||
| 157 | (spec.charAt(start) == '/') && | ||
| 158 | (spec.charAt(start + 1) == '/') && | ||
| 159 | (spec.charAt(start + 2) == '/') && | ||
| 160 | (spec.charAt(start + 3) == '/'); | ||
| 161 | if (!isUNCName && (start <= limit - 2) && (spec.charAt(start) == '/') && | ||
| 162 | (spec.charAt(start + 1) == '/')) { | ||
| 163 | start += 2; | ||
| 164 | i = spec.indexOf('/', start); | ||
| 165 | if (i < 0) { | ||
| 166 | i = spec.indexOf('?', start); | ||
| 167 | if (i < 0) | ||
| 168 | i = limit; | ||
| 169 | } | ||
| 170 | |||
| 171 | host = authority = spec.substring(start, i); | ||
| 172 | |||
| 173 | int ind = authority.indexOf('@'); | ||
| 174 | if (ind != -1) { | ||
| 175 | userInfo = authority.substring(0, ind); | ||
| 176 | host = authority.substring(ind+1); | ||
| 177 | } else { | ||
| 178 | userInfo = null; | ||
| 179 | } | ||
| 180 | if (host != null) { | ||
| 181 | // If the host is surrounded by [ and ] then its an IPv6 | ||
| 182 | // literal address as specified in RFC2732 | ||
| 183 | if (host.length()>0 && (host.charAt(0) == '[')) { | ||
| 184 | if ((ind = host.indexOf(']')) > 2) { | ||
| 185 | |||
| 186 | String nhost = host ; | ||
| 187 | host = nhost.substring(0,ind+1); | ||
| 188 | if (!IPAddressUtil. | ||
| 189 | isIPv6LiteralAddress(host.substring(1, ind))) { | ||
| 190 | throw new IllegalArgumentException( | ||
| 191 | "Invalid host: "+ host); | ||
| 192 | } | ||
| 193 | |||
| 194 | port = -1 ; | ||
| 195 | if (nhost.length() > ind+1) { | ||
| 196 | if (nhost.charAt(ind+1) == ':') { | ||
| 197 | ++ind ; | ||
| 198 | // port can be null according to RFC2396 | ||
| 199 | if (nhost.length() > (ind + 1)) { | ||
| 200 | port = Integer.parseInt(nhost.substring(ind+1)); | ||
| 201 | } | ||
| 202 | } else { | ||
| 203 | throw new IllegalArgumentException( | ||
| 204 | "Invalid authority field: " + authority); | ||
| 205 | } | ||
| 206 | } | ||
| 207 | } else { | ||
| 208 | throw new IllegalArgumentException( | ||
| 209 | "Invalid authority field: " + authority); | ||
| 210 | } | ||
| 211 | } else { | ||
| 212 | ind = host.indexOf(':'); | ||
| 213 | port = -1; | ||
| 214 | if (ind >= 0) { | ||
| 215 | // port can be null according to RFC2396 | ||
| 216 | if (host.length() > (ind + 1)) { | ||
| 217 | port = Integer.parseInt(host.substring(ind + 1)); | ||
| 218 | } | ||
| 219 | host = host.substring(0, ind); | ||
| 220 | } | ||
| 221 | } | ||
| 222 | } else { | ||
| 223 | host = ""; | ||
| 224 | } | ||
| 225 | if (port < -1) | ||
| 226 | throw new IllegalArgumentException("Invalid port number :" + | ||
| 227 | port); | ||
| 228 | start = i; | ||
| 229 | // If the authority is defined then the path is defined by the | ||
| 230 | // spec only; See RFC 2396 Section 5.2.4. | ||
| 231 | if (authority != null && authority.length() > 0) | ||
| 232 | path = ""; | ||
| 233 | } | ||
| 234 | |||
| 235 | if (host == null) { | ||
| 236 | host = ""; | ||
| 237 | } | ||
| 238 | |||
| 239 | // Parse the file path if any | ||
| 240 | if (start < limit) { | ||
| 241 | if (spec.charAt(start) == '/') { | ||
| 242 | path = spec.substring(start, limit); | ||
| 243 | } else if (path != null && path.length() > 0) { | ||
| 244 | isRelPath = true; | ||
| 245 | int ind = path.lastIndexOf('/'); | ||
| 246 | String seperator = ""; | ||
| 247 | if (ind == -1 && authority != null) | ||
| 248 | seperator = "/"; | ||
| 249 | path = path.substring(0, ind + 1) + seperator + | ||
| 250 | spec.substring(start, limit); | ||
| 251 | |||
| 252 | } else { | ||
| 253 | String seperator = (authority != null) ? "/" : ""; | ||
| 254 | path = seperator + spec.substring(start, limit); | ||
| 255 | } | ||
| 256 | } else if (queryOnly && path != null) { | ||
| 257 | int ind = path.lastIndexOf('/'); | ||
| 258 | if (ind < 0) | ||
| 259 | ind = 0; | ||
| 260 | path = path.substring(0, ind) + "/"; | ||
| 261 | } | ||
| 262 | if (path == null) | ||
| 263 | path = ""; | ||
| 264 | |||
| 265 | if (isRelPath) { | ||
| 266 | // Remove embedded /./ | ||
| 267 | while ((i = path.indexOf("/./")) >= 0) { | ||
| 268 | path = path.substring(0, i) + path.substring(i + 2); | ||
| 269 | } | ||
| 270 | // Remove embedded /../ if possible | ||
| 271 | i = 0; | ||
| 272 | while ((i = path.indexOf("/../", i)) >= 0) { | ||
| 273 | /* | ||
| 274 | * A "/../" will cancel the previous segment and itself, | ||
| 275 | * unless that segment is a "/../" itself | ||
| 276 | * i.e. "/a/b/../c" becomes "/a/c" | ||
| 277 | * but "/../../a" should stay unchanged | ||
| 278 | */ | ||
| 279 | if (i > 0 && (limit = path.lastIndexOf('/', i - 1)) >= 0 && | ||
| 280 | (path.indexOf("/../", limit) != 0)) { | ||
| 281 | path = path.substring(0, limit) + path.substring(i + 3); | ||
| 282 | i = 0; | ||
| 283 | } else { | ||
| 284 | i = i + 3; | ||
| 285 | } | ||
| 286 | } | ||
| 287 | // Remove trailing .. if possible | ||
| 288 | while (path.endsWith("/..")) { | ||
| 289 | i = path.indexOf("/.."); | ||
| 290 | if ((limit = path.lastIndexOf('/', i - 1)) >= 0) { | ||
| 291 | path = path.substring(0, limit+1); | ||
| 292 | } else { | ||
| 293 | break; | ||
| 294 | } | ||
| 295 | } | ||
| 296 | // Remove starting . | ||
| 297 | if (path.startsWith("./") && path.length() > 2) | ||
| 298 | path = path.substring(2); | ||
| 299 | |||
| 300 | // Remove trailing . | ||
| 301 | if (path.endsWith("/.")) | ||
| 302 | path = path.substring(0, path.length() -1); | ||
| 303 | } | ||
| 304 | |||
| 305 | setURL(u, protocol, host, port, authority, userInfo, path, query, ref); | ||
| 306 | } | ||
| 307 | |||
| 308 | /** | ||
| 309 | * Returns the default port for a URL parsed by this handler. This method | ||
| 310 | * is meant to be overidden by handlers with default port numbers. | ||
| 311 | * @return the default port for a <code>URL</code> parsed by this handler. | ||
| 312 | * @since 1.3 | ||
| 313 | */ | ||
| 314 | protected int getDefaultPort() { | ||
| 315 | return -1; | ||
| 316 | } | ||
| 317 | |||
| 318 | /** | ||
| 319 | * Provides the default equals calculation. May be overidden by handlers | ||
| 320 | * for other protocols that have different requirements for equals(). | ||
| 321 | * This method requires that none of its arguments is null. This is | ||
| 322 | * guaranteed by the fact that it is only called by java.net.URL class. | ||
| 323 | * @param u1 a URL object | ||
| 324 | * @param u2 a URL object | ||
| 325 | * @return <tt>true</tt> if the two urls are | ||
| 326 | * considered equal, ie. they refer to the same | ||
| 327 | * fragment in the same file. | ||
| 328 | * @since 1.3 | ||
| 329 | */ | ||
| 330 | protected boolean equals(URL u1, URL u2) { | ||
| 331 | String ref1 = u1.getRef(); | ||
| 332 | String ref2 = u2.getRef(); | ||
| 333 | return (ref1 == ref2 || (ref1 != null && ref1.equals(ref2))) && | ||
| 334 | sameFile(u1, u2); | ||
| 335 | } | ||
| 336 | |||
| 337 | /** | ||
| 338 | * Provides the default hash calculation. May be overidden by handlers for | ||
| 339 | * other protocols that have different requirements for hashCode | ||
| 340 | * calculation. | ||
| 341 | * @param u a URL object | ||
| 342 | * @return an <tt>int</tt> suitable for hash table indexing | ||
| 343 | * @since 1.3 | ||
| 344 | */ | ||
| 345 | protected int hashCode(URL u) { | ||
| 346 | int h = 0; | ||
| 347 | |||
| 348 | // Generate the protocol part. | ||
| 349 | String protocol = u.getProtocol(); | ||
| 350 | if (protocol != null) | ||
| 351 | h += protocol.hashCode(); | ||
| 352 | |||
| 353 | // Generate the host part. | ||
| 354 | InetAddress addr = getHostAddress(u); | ||
| 355 | if (addr != null) { | ||
| 356 | h += addr.hashCode(); | ||
| 357 | } else { | ||
| 358 | String host = u.getHost(); | ||
| 359 | if (host != null) | ||
| 360 | h += host.toLowerCase().hashCode(); | ||
| 361 | } | ||
| 362 | |||
| 363 | // Generate the file part. | ||
| 364 | String file = u.getFile(); | ||
| 365 | if (file != null) | ||
| 366 | h += file.hashCode(); | ||
| 367 | |||
| 368 | // Generate the port part. | ||
| 369 | if (u.getPort() == -1) | ||
| 370 | h += getDefaultPort(); | ||
| 371 | else | ||
| 372 | h += u.getPort(); | ||
| 373 | |||
| 374 | // Generate the ref part. | ||
| 375 | String ref = u.getRef(); | ||
| 376 | if (ref != null) | ||
| 377 | h += ref.hashCode(); | ||
| 378 | |||
| 379 | return h; | ||
| 380 | } | ||
| 381 | |||
| 382 | /** | ||
| 383 | * Compare two urls to see whether they refer to the same file, | ||
| 384 | * i.e., having the same protocol, host, port, and path. | ||
| 385 | * This method requires that none of its arguments is null. This is | ||
| 386 | * guaranteed by the fact that it is only called indirectly | ||
| 387 | * by java.net.URL class. | ||
| 388 | * @param u1 a URL object | ||
| 389 | * @param u2 a URL object | ||
| 390 | * @return true if u1 and u2 refer to the same file | ||
| 391 | * @since 1.3 | ||
| 392 | */ | ||
| 393 | protected boolean sameFile(URL u1, URL u2) { | ||
| 394 | // Compare the protocols. | ||
| 395 | if (!((u1.getProtocol() == u2.getProtocol()) || | ||
| 396 | (u1.getProtocol() != null && | ||
| 397 | u1.getProtocol().equalsIgnoreCase(u2.getProtocol())))) | ||
| 398 | return false; | ||
| 399 | |||
| 400 | // Compare the files. | ||
| 401 | if (!(u1.getFile() == u2.getFile() || | ||
| 402 | (u1.getFile() != null && u1.getFile().equals(u2.getFile())))) | ||
| 403 | return false; | ||
| 404 | |||
| 405 | // Compare the ports. | ||
| 406 | int port1, port2; | ||
| 407 | port1 = (u1.getPort() != -1) ? u1.getPort() : u1.handler.getDefaultPort(); | ||
| 408 | port2 = (u2.getPort() != -1) ? u2.getPort() : u2.handler.getDefaultPort(); | ||
| 409 | if (port1 != port2) | ||
| 410 | return false; | ||
| 411 | |||
| 412 | // Compare the hosts. | ||
| 413 | if (!hostsEqual(u1, u2)) | ||
| 414 | return false; | ||
| 415 | |||
| 416 | return true; | ||
| 417 | } | ||
| 418 | |||
| 419 | /** | ||
| 420 | * Get the IP address of our host. An empty host field or a DNS failure | ||
| 421 | * will result in a null return. | ||
| 422 | * | ||
| 423 | * @param u a URL object | ||
| 424 | * @return an <code>InetAddress</code> representing the host | ||
| 425 | * IP address. | ||
| 426 | * @since 1.3 | ||
| 427 | */ | ||
| 428 | protected synchronized InetAddress getHostAddress(URL u) { | ||
| 429 | if (u.hostAddress != null) | ||
| 430 | return u.hostAddress; | ||
| 431 | |||
| 432 | String host = u.getHost(); | ||
| 433 | if (host == null || host.equals("")) { | ||
| 434 | return null; | ||
| 435 | } else { | ||
| 436 | try { | ||
| 437 | u.hostAddress = InetAddress.getByName(host); | ||
| 438 | } catch (UnknownHostException ex) { | ||
| 439 | return null; | ||
| 440 | } catch (SecurityException se) { | ||
| 441 | return null; | ||
| 442 | } | ||
| 443 | } | ||
| 444 | return u.hostAddress; | ||
| 445 | } | ||
| 446 | |||
| 447 | /** | ||
| 448 | * Compares the host components of two URLs. | ||
| 449 | * @param u1 the URL of the first host to compare | ||
| 450 | * @param u2 the URL of the second host to compare | ||
| 451 | * @return <tt>true</tt> if and only if they | ||
| 452 | * are equal, <tt>false</tt> otherwise. | ||
| 453 | * @since 1.3 | ||
| 454 | */ | ||
| 455 | protected boolean hostsEqual(URL u1, URL u2) { | ||
| 456 | InetAddress a1 = getHostAddress(u1); | ||
| 457 | InetAddress a2 = getHostAddress(u2); | ||
| 458 | // if we have internet address for both, compare them | ||
| 459 | if (a1 != null && a2 != null) { | ||
| 460 | return a1.equals(a2); | ||
| 461 | // else, if both have host names, compare them | ||
| 462 | } else if (u1.getHost() != null && u2.getHost() != null) | ||
| 463 | return u1.getHost().equalsIgnoreCase(u2.getHost()); | ||
| 464 | else | ||
| 465 | return u1.getHost() == null && u2.getHost() == null; | ||
| 466 | } | ||
| 467 | |||
| 468 | /** | ||
| 469 | * Converts a <code>URL</code> of a specific protocol to a | ||
| 470 | * <code>String</code>. | ||
| 471 | * | ||
| 472 | * @param u the URL. | ||
| 473 | * @return a string representation of the <code>URL</code> argument. | ||
| 474 | */ | ||
| 475 | protected String toExternalForm(URL u) { | ||
| 476 | |||
| 477 | // pre-compute length of StringBuffer | ||
| 478 | int len = u.getProtocol().length() + 1; | ||
| 479 | if (u.getAuthority() != null && u.getAuthority().length() > 0) | ||
| 480 | len += 2 + u.getAuthority().length(); | ||
| 481 | if (u.getPath() != null) { | ||
| 482 | len += u.getPath().length(); | ||
| 483 | } | ||
| 484 | if (u.getQuery() != null) { | ||
| 485 | len += 1 + u.getQuery().length(); | ||
| 486 | } | ||
| 487 | if (u.getRef() != null) | ||
| 488 | len += 1 + u.getRef().length(); | ||
| 489 | |||
| 490 | StringBuffer result = new StringBuffer(len); | ||
| 491 | result.append(u.getProtocol()); | ||
| 492 | result.append(":"); | ||
| 493 | if (u.getAuthority() != null && u.getAuthority().length() > 0) { | ||
| 494 | result.append("//"); | ||
| 495 | result.append(u.getAuthority()); | ||
| 496 | } | ||
| 497 | if (u.getPath() != null) { | ||
| 498 | result.append(u.getPath()); | ||
| 499 | } | ||
| 500 | if (u.getQuery() != null) { | ||
| 501 | result.append('?'); | ||
| 502 | result.append(u.getQuery()); | ||
| 503 | } | ||
| 504 | if (u.getRef() != null) { | ||
| 505 | result.append("#"); | ||
| 506 | result.append(u.getRef()); | ||
| 507 | } | ||
| 508 | return result.toString(); | ||
| 509 | } | ||
| 510 | |||
| 511 | /** | ||
| 512 | * Sets the fields of the <code>URL</code> argument to the indicated values. | ||
| 513 | * Only classes derived from URLStreamHandler are supposed to be able | ||
| 514 | * to call the set method on a URL. | ||
| 515 | * | ||
| 516 | * @param u the URL to modify. | ||
| 517 | * @param protocol the protocol name. | ||
| 518 | * @param host the remote host value for the URL. | ||
| 519 | * @param port the port on the remote machine. | ||
| 520 | * @param authority the authority part for the URL. | ||
| 521 | * @param userInfo the userInfo part of the URL. | ||
| 522 | * @param path the path component of the URL. | ||
| 523 | * @param query the query part for the URL. | ||
| 524 | * @param ref the reference. | ||
| 525 | * @exception SecurityException if the protocol handler of the URL is | ||
| 526 | * different from this one | ||
| 527 | * @see java.net.URL#set(java.lang.String, java.lang.String, int, java.lang.String, java.lang.String) | ||
| 528 | * @since 1.3 | ||
| 529 | */ | ||
| 530 | protected void setURL(URL u, String protocol, String host, int port, | ||
| 531 | String authority, String userInfo, String path, | ||
| 532 | String query, String ref) { | ||
| 533 | if (this != u.handler) { | ||
| 534 | throw new SecurityException("handler for url different from " + | ||
| 535 | "this handler"); | ||
| 536 | } | ||
| 537 | // ensure that no one can reset the protocol on a given URL. | ||
| 538 | u.set(u.getProtocol(), host, port, authority, userInfo, path, query, ref); | ||
| 539 | } | ||
| 540 | |||
| 541 | /** | ||
| 542 | * Sets the fields of the <code>URL</code> argument to the indicated values. | ||
| 543 | * Only classes derived from URLStreamHandler are supposed to be able | ||
| 544 | * to call the set method on a URL. | ||
| 545 | * | ||
| 546 | * @param u the URL to modify. | ||
| 547 | * @param protocol the protocol name. This value is ignored since 1.2. | ||
| 548 | * @param host the remote host value for the URL. | ||
| 549 | * @param port the port on the remote machine. | ||
| 550 | * @param file the file. | ||
| 551 | * @param ref the reference. | ||
| 552 | * @exception SecurityException if the protocol handler of the URL is | ||
| 553 | * different from this one | ||
| 554 | * @deprecated Use setURL(URL, String, String, int, String, String, String, | ||
| 555 | * String); | ||
| 556 | */ | ||
| 557 | @Deprecated | ||
| 558 | protected void setURL(URL u, String protocol, String host, int port, | ||
| 559 | String file, String ref) { | ||
| 560 | /* | ||
| 561 | * Only old URL handlers call this, so assume that the host | ||
| 562 | * field might contain "user:passwd@host". Fix as necessary. | ||
| 563 | */ | ||
| 564 | String authority = null; | ||
| 565 | String userInfo = null; | ||
| 566 | if (host != null && host.length() != 0) { | ||
| 567 | authority = (port == -1) ? host : host + ":" + port; | ||
| 568 | int at = host.lastIndexOf('@'); | ||
| 569 | if (at != -1) { | ||
| 570 | userInfo = host.substring(0, at); | ||
| 571 | host = host.substring(at+1); | ||
| 572 | } | ||
| 573 | } | ||
| 574 | |||
| 575 | /* | ||
| 576 | * Assume file might contain query part. Fix as necessary. | ||
| 577 | */ | ||
| 578 | String path = null; | ||
| 579 | String query = null; | ||
| 580 | if (file != null) { | ||
| 581 | int q = file.lastIndexOf('?'); | ||
| 582 | if (q != -1) { | ||
| 583 | query = file.substring(q+1); | ||
| 584 | path = file.substring(0, q); | ||
| 585 | } else | ||
| 586 | path = file; | ||
| 587 | } | ||
| 588 | setURL(u, protocol, host, port, authority, userInfo, path, query, ref); | ||
| 589 | } | ||
| 590 | } | ||