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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 | +} | |