1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * Copyright (c) 1995, 2015, Oracle and/or its affiliates. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. Oracle designates this 9 * particular file as subject to the "Classpath" exception as provided 10 * by Oracle in the LICENSE file that accompanied this code. 11 * 12 * This code is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 * version 2 for more details (a copy is included in the LICENSE file that 16 * accompanied this code). 17 * 18 * You should have received a copy of the GNU General Public License version 19 * 2 along with this work; if not, write to the Free Software Foundation, 20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 21 * 22 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 23 * or visit www.oracle.com if you need additional information or have any 24 * questions. 25 */ 26 27 package java.net; 28 29 import java.io.IOException; 30 import java.io.InputStream; 31 import java.io.InvalidObjectException; 32 import java.io.ObjectInputStream.GetField; 33 import java.io.ObjectStreamException; 34 import java.io.ObjectStreamField; 35 import java.util.Collections; 36 import java.util.HashSet; 37 import java.util.Hashtable; 38 import java.util.Set; 39 import java.util.StringTokenizer; 40 import sun.security.util.SecurityConstants; 41 42 /** 43 * Class {@code URL} represents a Uniform Resource 44 * Locator, a pointer to a "resource" on the World 45 * Wide Web. A resource can be something as simple as a file or a 46 * directory, or it can be a reference to a more complicated object, 47 * such as a query to a database or to a search engine. More 48 * information on the types of URLs and their formats can be found at: 49 * <a href= 50 * "http://web.archive.org/web/20051219043731/http://archive.ncsa.uiuc.edu/SDG/Software/Mosaic/Demo/url-primer.html"> 51 * <i>Types of URL</i></a> 52 * <p> 53 * In general, a URL can be broken into several parts. Consider the 54 * following example: 55 * <blockquote><pre> 56 * http://www.example.com/docs/resource1.html 57 * </pre></blockquote> 58 * <p> 59 * The URL above indicates that the protocol to use is 60 * {@code http} (HyperText Transfer Protocol) and that the 61 * information resides on a host machine named 62 * {@code www.example.com}. The information on that host 63 * machine is named {@code /docs/resource1.html}. The exact 64 * meaning of this name on the host machine is both protocol 65 * dependent and host dependent. The information normally resides in 66 * a file, but it could be generated on the fly. This component of 67 * the URL is called the <i>path</i> component. 68 * <p> 69 * A URL can optionally specify a "port", which is the 70 * port number to which the TCP connection is made on the remote host 71 * machine. If the port is not specified, the default port for 72 * the protocol is used instead. For example, the default port for 73 * {@code http} is {@code 80}. An alternative port could be 74 * specified as: 75 * <blockquote><pre> 76 * http://www.example.com:1080/docs/resource1.html 77 * </pre></blockquote> 78 * <p> 79 * The syntax of {@code URL} is defined by <a 80 * href="http://www.ietf.org/rfc/rfc2396.txt"><i>RFC 2396: Uniform 81 * Resource Identifiers (URI): Generic Syntax</i></a>, amended by <a 82 * href="http://www.ietf.org/rfc/rfc2732.txt"><i>RFC 2732: Format for 83 * Literal IPv6 Addresses in URLs</i></a>. The Literal IPv6 address format 84 * also supports scope_ids. The syntax and usage of scope_ids is described 85 * <a href="Inet6Address.html#scoped">here</a>. 86 * <p> 87 * A URL may have appended to it a "fragment", also known 88 * as a "ref" or a "reference". The fragment is indicated by the sharp 89 * sign character "#" followed by more characters. For example, 90 * <blockquote><pre> 91 * http://java.sun.com/index.html#chapter1 92 * </pre></blockquote> 93 * <p> 94 * This fragment is not technically part of the URL. Rather, it 95 * indicates that after the specified resource is retrieved, the 96 * application is specifically interested in that part of the 97 * document that has the tag {@code chapter1} attached to it. The 98 * meaning of a tag is resource specific. 99 * <p> 100 * An application can also specify a "relative URL", 101 * which contains only enough information to reach the resource 102 * relative to another URL. Relative URLs are frequently used within 103 * HTML pages. For example, if the contents of the URL: 104 * <blockquote><pre> 105 * http://java.sun.com/index.html 106 * </pre></blockquote> 107 * contained within it the relative URL: 108 * <blockquote><pre> 109 * FAQ.html 110 * </pre></blockquote> 111 * it would be a shorthand for: 112 * <blockquote><pre> 113 * http://java.sun.com/FAQ.html 114 * </pre></blockquote> 115 * <p> 116 * The relative URL need not specify all the components of a URL. If 117 * the protocol, host name, or port number is missing, the value is 118 * inherited from the fully specified URL. The file component must be 119 * specified. The optional fragment is not inherited. 120 * <p> 121 * The URL class does not itself encode or decode any URL components 122 * according to the escaping mechanism defined in RFC2396. It is the 123 * responsibility of the caller to encode any fields, which need to be 124 * escaped prior to calling URL, and also to decode any escaped fields, 125 * that are returned from URL. Furthermore, because URL has no knowledge 126 * of URL escaping, it does not recognise equivalence between the encoded 127 * or decoded form of the same URL. For example, the two URLs:<br> 128 * <pre> http://foo.com/hello world/ and http://foo.com/hello%20world</pre> 129 * would be considered not equal to each other. 130 * <p> 131 * Note, the {@link java.net.URI} class does perform escaping of its 132 * component fields in certain circumstances. The recommended way 133 * to manage the encoding and decoding of URLs is to use {@link java.net.URI}, 134 * and to convert between these two classes using {@link #toURI()} and 135 * {@link URI#toURL()}. 136 * <p> 137 * The {@link URLEncoder} and {@link URLDecoder} classes can also be 138 * used, but only for HTML form encoding, which is not the same 139 * as the encoding scheme defined in RFC2396. 140 * 141 * @author James Gosling 142 * @since JDK1.0 143 */ 144 public final class URL implements java.io.Serializable { 145 146 // Android-changed: Custom built-in URLStreamHandlers for http, https. 147 // static final String BUILTIN_HANDLERS_PREFIX = "sun.net.www.protocol"; 148 private static final Set<String> BUILTIN_HANDLER_CLASS_NAMES = createBuiltinHandlerClassNames(); 149 static final long serialVersionUID = -7627629688361524110L; 150 151 /** 152 * The property which specifies the package prefix list to be scanned 153 * for protocol handlers. The value of this property (if any) should 154 * be a vertical bar delimited list of package names to search through 155 * for a protocol handler to load. The policy of this class is that 156 * all protocol handlers will be in a class called <protocolname>.Handler, 157 * and each package in the list is examined in turn for a matching 158 * handler. If none are found (or the property is not specified), the 159 * default package prefix, sun.net.www.protocol, is used. The search 160 * proceeds from the first package in the list to the last and stops 161 * when a match is found. 162 */ 163 private static final String protocolPathProp = "java.protocol.handler.pkgs"; 164 165 /** 166 * The protocol to use (ftp, http, nntp, ... etc.) . 167 * @serial 168 */ 169 private String protocol; 170 171 /** 172 * The host name to connect to. 173 * @serial 174 */ 175 private String host; 176 177 /** 178 * The protocol port to connect to. 179 * @serial 180 */ 181 private int port = -1; 182 183 /** 184 * The specified file name on that host. {@code file} is 185 * defined as {@code path[?query]} 186 * @serial 187 */ 188 private String file; 189 190 /** 191 * The query part of this URL. 192 */ 193 private transient String query; 194 195 /** 196 * The authority part of this URL. 197 * @serial 198 */ 199 private String authority; 200 201 /** 202 * The path part of this URL. 203 */ 204 private transient String path; 205 206 /** 207 * The userinfo part of this URL. 208 */ 209 private transient String userInfo; 210 211 /** 212 * # reference. 213 * @serial 214 */ 215 private String ref; 216 217 /** 218 * The host's IP address, used in equals and hashCode. 219 * Computed on demand. An uninitialized or unknown hostAddress is null. 220 */ 221 transient InetAddress hostAddress; 222 223 /** 224 * The URLStreamHandler for this URL. 225 */ 226 transient URLStreamHandler handler; 227 228 /* Our hash code. 229 * @serial 230 */ 231 private int hashCode = -1; 232 233 private transient UrlDeserializedState tempState; 234 235 /** 236 * Creates a {@code URL} object from the specified 237 * {@code protocol}, {@code host}, {@code port} 238 * number, and {@code file}.<p> 239 * 240 * {@code host} can be expressed as a host name or a literal 241 * IP address. If IPv6 literal address is used, it should be 242 * enclosed in square brackets ({@code '['} and {@code ']'}), as 243 * specified by <a 244 * href="http://www.ietf.org/rfc/rfc2732.txt">RFC 2732</a>; 245 * However, the literal IPv6 address format defined in <a 246 * href="http://www.ietf.org/rfc/rfc2373.txt"><i>RFC 2373: IP 247 * Version 6 Addressing Architecture</i></a> is also accepted.<p> 248 * 249 * Specifying a {@code port} number of {@code -1} 250 * indicates that the URL should use the default port for the 251 * protocol.<p> 252 * 253 * If this is the first URL object being created with the specified 254 * protocol, a <i>stream protocol handler</i> object, an instance of 255 * class {@code URLStreamHandler}, is created for that protocol: 256 * <ol> 257 * <li>If the application has previously set up an instance of 258 * {@code URLStreamHandlerFactory} as the stream handler factory, 259 * then the {@code createURLStreamHandler} method of that instance 260 * is called with the protocol string as an argument to create the 261 * stream protocol handler. 262 * <li>If no {@code URLStreamHandlerFactory} has yet been set up, 263 * or if the factory's {@code createURLStreamHandler} method 264 * returns {@code null}, then the constructor finds the 265 * value of the system property: 266 * <blockquote><pre> 267 * java.protocol.handler.pkgs 268 * </pre></blockquote> 269 * If the value of that system property is not {@code null}, 270 * it is interpreted as a list of packages separated by a vertical 271 * slash character '{@code |}'. The constructor tries to load 272 * the class named: 273 * <blockquote><pre> 274 * <<i>package</i>>.<<i>protocol</i>>.Handler 275 * </pre></blockquote> 276 * where <<i>package</i>> is replaced by the name of the package 277 * and <<i>protocol</i>> is replaced by the name of the protocol. 278 * If this class does not exist, or if the class exists but it is not 279 * a subclass of {@code URLStreamHandler}, then the next package 280 * in the list is tried. 281 * <li>If the previous step fails to find a protocol handler, then the 282 * constructor tries to load from a system default package. 283 * <blockquote><pre> 284 * <<i>system default package</i>>.<<i>protocol</i>>.Handler 285 * </pre></blockquote> 286 * If this class does not exist, or if the class exists but it is not a 287 * subclass of {@code URLStreamHandler}, then a 288 * {@code MalformedURLException} is thrown. 289 * </ol> 290 * 291 * <p>Protocol handlers for the following protocols are guaranteed 292 * to exist on the search path :- 293 * <blockquote><pre> 294 * http, https, file, and jar 295 * </pre></blockquote> 296 * Protocol handlers for additional protocols may also be 297 * available. 298 * 299 * <p>No validation of the inputs is performed by this constructor. 300 * 301 * @param protocol the name of the protocol to use. 302 * @param host the name of the host. 303 * @param port the port number on the host. 304 * @param file the file on the host 305 * @exception MalformedURLException if an unknown protocol is specified. 306 * @see java.lang.System#getProperty(java.lang.String) 307 * @see java.net.URL#setURLStreamHandlerFactory( 308 * java.net.URLStreamHandlerFactory) 309 * @see java.net.URLStreamHandler 310 * @see java.net.URLStreamHandlerFactory#createURLStreamHandler( 311 * java.lang.String) 312 */ 313 public URL(String protocol, String host, int port, String file) 314 throws MalformedURLException 315 { 316 this(protocol, host, port, file, null); 317 } 318 319 /** 320 * Creates a URL from the specified {@code protocol} 321 * name, {@code host} name, and {@code file} name. The 322 * default port for the specified protocol is used. 323 * <p> 324 * This method is equivalent to calling the four-argument 325 * constructor with the arguments being {@code protocol}, 326 * {@code host}, {@code -1}, and {@code file}. 327 * 328 * No validation of the inputs is performed by this constructor. 329 * 330 * @param protocol the name of the protocol to use. 331 * @param host the name of the host. 332 * @param file the file on the host. 333 * @exception MalformedURLException if an unknown protocol is specified. 334 * @see java.net.URL#URL(java.lang.String, java.lang.String, 335 * int, java.lang.String) 336 */ 337 public URL(String protocol, String host, String file) 338 throws MalformedURLException { 339 this(protocol, host, -1, file); 340 } 341 342 /** 343 * Creates a {@code URL} object from the specified 344 * {@code protocol}, {@code host}, {@code port} 345 * number, {@code file}, and {@code handler}. Specifying 346 * a {@code port} number of {@code -1} indicates that 347 * the URL should use the default port for the protocol. Specifying 348 * a {@code handler} of {@code null} indicates that the URL 349 * should use a default stream handler for the protocol, as outlined 350 * for: 351 * java.net.URL#URL(java.lang.String, java.lang.String, int, 352 * java.lang.String) 353 * 354 * <p>If the handler is not null and there is a security manager, 355 * the security manager's {@code checkPermission} 356 * method is called with a 357 * {@code NetPermission("specifyStreamHandler")} permission. 358 * This may result in a SecurityException. 359 * 360 * No validation of the inputs is performed by this constructor. 361 * 362 * @param protocol the name of the protocol to use. 363 * @param host the name of the host. 364 * @param port the port number on the host. 365 * @param file the file on the host 366 * @param handler the stream handler for the URL. 367 * @exception MalformedURLException if an unknown protocol is specified. 368 * @exception SecurityException 369 * if a security manager exists and its 370 * {@code checkPermission} method doesn't allow 371 * specifying a stream handler explicitly. 372 * @see java.lang.System#getProperty(java.lang.String) 373 * @see java.net.URL#setURLStreamHandlerFactory( 374 * java.net.URLStreamHandlerFactory) 375 * @see java.net.URLStreamHandler 376 * @see java.net.URLStreamHandlerFactory#createURLStreamHandler( 377 * java.lang.String) 378 * @see SecurityManager#checkPermission 379 * @see java.net.NetPermission 380 */ 381 public URL(String protocol, String host, int port, String file, 382 URLStreamHandler handler) throws MalformedURLException { 383 if (handler != null) { 384 SecurityManager sm = System.getSecurityManager(); 385 if (sm != null) { 386 // check for permission to specify a handler 387 checkSpecifyHandler(sm); 388 } 389 } 390 391 protocol = protocol.toLowerCase(); 392 this.protocol = protocol; 393 if (host != null) { 394 395 /** 396 * if host is a literal IPv6 address, 397 * we will make it conform to RFC 2732 398 */ 399 if (host.indexOf(':') >= 0 && !host.startsWith("[")) { 400 host = "["+host+"]"; 401 } 402 this.host = host; 403 404 if (port < -1) { 405 throw new MalformedURLException("Invalid port number :" + 406 port); 407 } 408 this.port = port; 409 authority = (port == -1) ? host : host + ":" + port; 410 } 411 412 // Android-changed: App compat. Prepend '/' if host is null / empty 413 // Parts parts = new Parts(file); 414 Parts parts = new Parts(file, host); 415 path = parts.getPath(); 416 query = parts.getQuery(); 417 418 if (query != null) { 419 this.file = path + "?" + query; 420 } else { 421 this.file = path; 422 } 423 ref = parts.getRef(); 424 425 // Note: we don't do validation of the URL here. Too risky to change 426 // right now, but worth considering for future reference. -br 427 if (handler == null && 428 (handler = getURLStreamHandler(protocol)) == null) { 429 throw new MalformedURLException("unknown protocol: " + protocol); 430 } 431 this.handler = handler; 432 } 433 434 /** 435 * Creates a {@code URL} object from the {@code String} 436 * representation. 437 * <p> 438 * This constructor is equivalent to a call to the two-argument 439 * constructor with a {@code null} first argument. 440 * 441 * @param spec the {@code String} to parse as a URL. 442 * @exception MalformedURLException if no protocol is specified, or an 443 * unknown protocol is found, or {@code spec} is {@code null}. 444 * @see java.net.URL#URL(java.net.URL, java.lang.String) 445 */ 446 public URL(String spec) throws MalformedURLException { 447 this(null, spec); 448 } 449 450 /** 451 * Creates a URL by parsing the given spec within a specified context. 452 * 453 * The new URL is created from the given context URL and the spec 454 * argument as described in 455 * RFC2396 "Uniform Resource Identifiers : Generic * Syntax" : 456 * <blockquote><pre> 457 * <scheme>://<authority><path>?<query>#<fragment> 458 * </pre></blockquote> 459 * The reference is parsed into the scheme, authority, path, query and 460 * fragment parts. If the path component is empty and the scheme, 461 * authority, and query components are undefined, then the new URL is a 462 * reference to the current document. Otherwise, the fragment and query 463 * parts present in the spec are used in the new URL. 464 * <p> 465 * If the scheme component is defined in the given spec and does not match 466 * the scheme of the context, then the new URL is created as an absolute 467 * URL based on the spec alone. Otherwise the scheme component is inherited 468 * from the context URL. 469 * <p> 470 * If the authority component is present in the spec then the spec is 471 * treated as absolute and the spec authority and path will replace the 472 * context authority and path. If the authority component is absent in the 473 * spec then the authority of the new URL will be inherited from the 474 * context. 475 * <p> 476 * If the spec's path component begins with a slash character 477 * "/" then the 478 * path is treated as absolute and the spec path replaces the context path. 479 * <p> 480 * Otherwise, the path is treated as a relative path and is appended to the 481 * context path, as described in RFC2396. Also, in this case, 482 * the path is canonicalized through the removal of directory 483 * changes made by occurrences of ".." and ".". 484 * <p> 485 * For a more detailed description of URL parsing, refer to RFC2396. 486 * 487 * @param context the context in which to parse the specification. 488 * @param spec the {@code String} to parse as a URL. 489 * @exception MalformedURLException if no protocol is specified, or an 490 * unknown protocol is found, or {@code spec} is {@code null}. 491 * @see java.net.URL#URL(java.lang.String, java.lang.String, 492 * int, java.lang.String) 493 * @see java.net.URLStreamHandler 494 * @see java.net.URLStreamHandler#parseURL(java.net.URL, 495 * java.lang.String, int, int) 496 */ 497 public URL(URL context, String spec) throws MalformedURLException { 498 this(context, spec, null); 499 } 500 501 /** 502 * Creates a URL by parsing the given spec with the specified handler 503 * within a specified context. If the handler is null, the parsing 504 * occurs as with the two argument constructor. 505 * 506 * @param context the context in which to parse the specification. 507 * @param spec the {@code String} to parse as a URL. 508 * @param handler the stream handler for the URL. 509 * @exception MalformedURLException if no protocol is specified, or an 510 * unknown protocol is found, or {@code spec} is {@code null}. 511 * @exception SecurityException 512 * if a security manager exists and its 513 * {@code checkPermission} method doesn't allow 514 * specifying a stream handler. 515 * @see java.net.URL#URL(java.lang.String, java.lang.String, 516 * int, java.lang.String) 517 * @see java.net.URLStreamHandler 518 * @see java.net.URLStreamHandler#parseURL(java.net.URL, 519 * java.lang.String, int, int) 520 */ 521 public URL(URL context, String spec, URLStreamHandler handler) 522 throws MalformedURLException 523 { 524 String original = spec; 525 int i, limit, c; 526 int start = 0; 527 String newProtocol = null; 528 boolean aRef=false; 529 boolean isRelative = false; 530 531 // Check for permission to specify a handler 532 if (handler != null) { 533 SecurityManager sm = System.getSecurityManager(); 534 if (sm != null) { 535 checkSpecifyHandler(sm); 536 } 537 } 538 539 try { 540 limit = spec.length(); 541 while ((limit > 0) && (spec.charAt(limit - 1) <= ' ')) { 542 limit--; //eliminate trailing whitespace 543 } 544 while ((start < limit) && (spec.charAt(start) <= ' ')) { 545 start++; // eliminate leading whitespace 546 } 547 548 if (spec.regionMatches(true, start, "url:", 0, 4)) { 549 start += 4; 550 } 551 if (start < spec.length() && spec.charAt(start) == '#') { 552 /* we're assuming this is a ref relative to the context URL. 553 * This means protocols cannot start w/ '#', but we must parse 554 * ref URL's like: "hello:there" w/ a ':' in them. 555 */ 556 aRef=true; 557 } 558 for (i = start ; !aRef && (i < limit) && 559 ((c = spec.charAt(i)) != '/') ; i++) { 560 if (c == ':') { 561 562 String s = spec.substring(start, i).toLowerCase(); 563 if (isValidProtocol(s)) { 564 newProtocol = s; 565 start = i + 1; 566 } 567 break; 568 } 569 } 570 571 // Only use our context if the protocols match. 572 protocol = newProtocol; 573 if ((context != null) && ((newProtocol == null) || 574 newProtocol.equalsIgnoreCase(context.protocol))) { 575 // inherit the protocol handler from the context 576 // if not specified to the constructor 577 if (handler == null) { 578 handler = context.handler; 579 } 580 581 // If the context is a hierarchical URL scheme and the spec 582 // contains a matching scheme then maintain backwards 583 // compatibility and treat it as if the spec didn't contain 584 // the scheme; see 5.2.3 of RFC2396 585 if (context.path != null && context.path.startsWith("/")) 586 newProtocol = null; 587 588 if (newProtocol == null) { 589 protocol = context.protocol; 590 authority = context.authority; 591 userInfo = context.userInfo; 592 host = context.host; 593 port = context.port; 594 file = context.file; 595 path = context.path; 596 isRelative = true; 597 } 598 } 599 600 if (protocol == null) { 601 throw new MalformedURLException("no protocol: "+original); 602 } 603 604 // Get the protocol handler if not specified or the protocol 605 // of the context could not be used 606 if (handler == null && 607 (handler = getURLStreamHandler(protocol)) == null) { 608 throw new MalformedURLException("unknown protocol: "+protocol); 609 } 610 611 this.handler = handler; 612 613 i = spec.indexOf('#', start); 614 if (i >= 0) { 615 ref = spec.substring(i + 1, limit); 616 limit = i; 617 } 618 619 /* 620 * Handle special case inheritance of query and fragment 621 * implied by RFC2396 section 5.2.2. 622 */ 623 if (isRelative && start == limit) { 624 query = context.query; 625 if (ref == null) { 626 ref = context.ref; 627 } 628 } 629 630 handler.parseURL(this, spec, start, limit); 631 632 } catch(MalformedURLException e) { 633 throw e; 634 } catch(Exception e) { 635 MalformedURLException exception = new MalformedURLException(e.getMessage()); 636 exception.initCause(e); 637 throw exception; 638 } 639 } 640 641 /* 642 * Returns true if specified string is a valid protocol name. 643 */ 644 private boolean isValidProtocol(String protocol) { 645 int len = protocol.length(); 646 if (len < 1) 647 return false; 648 char c = protocol.charAt(0); 649 if (!Character.isLetter(c)) 650 return false; 651 for (int i = 1; i < len; i++) { 652 c = protocol.charAt(i); 653 if (!Character.isLetterOrDigit(c) && c != '.' && c != '+' && 654 c != '-') { 655 return false; 656 } 657 } 658 return true; 659 } 660 661 /* 662 * Checks for permission to specify a stream handler. 663 */ 664 private void checkSpecifyHandler(SecurityManager sm) { 665 sm.checkPermission(SecurityConstants.SPECIFY_HANDLER_PERMISSION); 666 } 667 668 /** 669 * Sets the fields of the URL. This is not a public method so that 670 * only URLStreamHandlers can modify URL fields. URLs are 671 * otherwise constant. 672 * 673 * @param protocol the name of the protocol to use 674 * @param host the name of the host 675 @param port the port number on the host 676 * @param file the file on the host 677 * @param ref the internal reference in the URL 678 */ 679 void set(String protocol, String host, int port, 680 String file, String ref) { 681 synchronized (this) { 682 this.protocol = protocol; 683 this.host = host; 684 authority = port == -1 ? host : host + ":" + port; 685 this.port = port; 686 this.file = file; 687 this.ref = ref; 688 /* This is very important. We must recompute this after the 689 * URL has been changed. */ 690 hashCode = -1; 691 hostAddress = null; 692 int q = file.lastIndexOf('?'); 693 if (q != -1) { 694 query = file.substring(q+1); 695 path = file.substring(0, q); 696 } else 697 path = file; 698 } 699 } 700 701 /** 702 * Sets the specified 8 fields of the URL. This is not a public method so 703 * that only URLStreamHandlers can modify URL fields. URLs are otherwise 704 * constant. 705 * 706 * @param protocol the name of the protocol to use 707 * @param host the name of the host 708 * @param port the port number on the host 709 * @param authority the authority part for the url 710 * @param userInfo the username and password 711 * @param path the file on the host 712 * @param ref the internal reference in the URL 713 * @param query the query part of this URL 714 * @since 1.3 715 */ 716 void set(String protocol, String host, int port, 717 String authority, String userInfo, String path, 718 String query, String ref) { 719 synchronized (this) { 720 this.protocol = protocol; 721 this.host = host; 722 this.port = port; 723 // Android-changed: App compat. Only include query part if it's nonempty. 724 // this.file = query == null ? path : path + "?" + query; 725 this.file = (query == null || query.isEmpty()) ? path : path + "?" + query; 726 this.userInfo = userInfo; 727 this.path = path; 728 this.ref = ref; 729 /* This is very important. We must recompute this after the 730 * URL has been changed. */ 731 hashCode = -1; 732 hostAddress = null; 733 this.query = query; 734 this.authority = authority; 735 } 736 } 737 738 /** 739 * Gets the query part of this {@code URL}. 740 * 741 * @return the query part of this {@code URL}, 742 * or <CODE>null</CODE> if one does not exist 743 * @since 1.3 744 */ 745 public String getQuery() { 746 return query; 747 } 748 749 /** 750 * Gets the path part of this {@code URL}. 751 * 752 * @return the path part of this {@code URL}, or an 753 * empty string if one does not exist 754 * @since 1.3 755 */ 756 public String getPath() { 757 return path; 758 } 759 760 /** 761 * Gets the userInfo part of this {@code URL}. 762 * 763 * @return the userInfo part of this {@code URL}, or 764 * <CODE>null</CODE> if one does not exist 765 * @since 1.3 766 */ 767 public String getUserInfo() { 768 return userInfo; 769 } 770 771 /** 772 * Gets the authority part of this {@code URL}. 773 * 774 * @return the authority part of this {@code URL} 775 * @since 1.3 776 */ 777 public String getAuthority() { 778 return authority; 779 } 780 781 /** 782 * Gets the port number of this {@code URL}. 783 * 784 * @return the port number, or -1 if the port is not set 785 */ 786 public int getPort() { 787 return port; 788 } 789 790 /** 791 * Gets the default port number of the protocol associated 792 * with this {@code URL}. If the URL scheme or the URLStreamHandler 793 * for the URL do not define a default port number, 794 * then -1 is returned. 795 * 796 * @return the port number 797 * @since 1.4 798 */ 799 public int getDefaultPort() { 800 return handler.getDefaultPort(); 801 } 802 803 /** 804 * Gets the protocol name of this {@code URL}. 805 * 806 * @return the protocol of this {@code URL}. 807 */ 808 public String getProtocol() { 809 return protocol; 810 } 811 812 /** 813 * Gets the host name of this {@code URL}, if applicable. 814 * The format of the host conforms to RFC 2732, i.e. for a 815 * literal IPv6 address, this method will return the IPv6 address 816 * enclosed in square brackets ({@code '['} and {@code ']'}). 817 * 818 * @return the host name of this {@code URL}. 819 */ 820 public String getHost() { 821 return host; 822 } 823 824 /** 825 * Gets the file name of this {@code URL}. 826 * The returned file portion will be 827 * the same as <CODE>getPath()</CODE>, plus the concatenation of 828 * the value of <CODE>getQuery()</CODE>, if any. If there is 829 * no query portion, this method and <CODE>getPath()</CODE> will 830 * return identical results. 831 * 832 * @return the file name of this {@code URL}, 833 * or an empty string if one does not exist 834 */ 835 public String getFile() { 836 return file; 837 } 838 839 /** 840 * Gets the anchor (also known as the "reference") of this 841 * {@code URL}. 842 * 843 * @return the anchor (also known as the "reference") of this 844 * {@code URL}, or <CODE>null</CODE> if one does not exist 845 */ 846 public String getRef() { 847 return ref; 848 } 849 850 // Android-changed: Don't let URL.equals() attempt to resolve host names. 851 /** 852 * Compares this URL for equality with another object.<p> 853 * 854 * If the given object is not a URL then this method immediately returns 855 * {@code false}.<p> 856 * 857 * Two URL objects are equal if they have the same protocol, reference 858 * equivalent hosts, have the same port number on the host, and the same 859 * file and fragment of the file.<p> 860 * 861 * Returns true if this URL equals {@code o}. URLs are equal if they have 862 * the same protocol, host, port, file, and reference. 863 * 864 * <h3>Network I/O Warning</h3> 865 * <p>Some implementations of URL.equals() resolve host names over the 866 * network. This is problematic: 867 * <ul> 868 * <li><strong>The network may be slow.</strong> Many classes, including 869 * core collections like {@link java.util.Map Map} and {@link java.util.Set 870 * Set} expect that {@code equals} and {@code hashCode} will return quickly. 871 * By violating this assumption, this method posed potential performance 872 * problems. 873 * <li><strong>Equal IP addresses do not imply equal content.</strong> 874 * Virtual hosting permits unrelated sites to share an IP address. This 875 * method could report two otherwise unrelated URLs to be equal because 876 * they're hosted on the same server.</li> 877 * <li><strong>The network may not be available.</strong> Two URLs could be 878 * equal when a network is available and unequal otherwise.</li> 879 * <li><strong>The network may change.</strong> The IP address for a given 880 * host name varies by network and over time. This is problematic for mobile 881 * devices. Two URLs could be equal on some networks and unequal on 882 * others.</li> 883 * </ul> 884 * <p>This problem is fixed in Android 4.0 (Ice Cream Sandwich). In that 885 * release, URLs are only equal if their host names are equal (ignoring 886 * case). 887 * 888 * @param obj the URL to compare against. 889 * @return {@code true} if the objects are the same; 890 * {@code false} otherwise. 891 */ 892 public boolean equals(Object obj) { 893 if (!(obj instanceof URL)) 894 return false; 895 URL u2 = (URL)obj; 896 897 return handler.equals(this, u2); 898 } 899 900 /** 901 * Creates an integer suitable for hash table indexing.<p> 902 * 903 * The hash code is based upon all the URL components relevant for URL 904 * comparison. As such, this operation is a blocking operation.<p> 905 * 906 * @return a hash code for this {@code URL}. 907 */ 908 public synchronized int hashCode() { 909 if (hashCode != -1) 910 return hashCode; 911 912 hashCode = handler.hashCode(this); 913 return hashCode; 914 } 915 916 /** 917 * Compares two URLs, excluding the fragment component.<p> 918 * 919 * Returns {@code true} if this {@code URL} and the 920 * {@code other} argument are equal without taking the 921 * fragment component into consideration. 922 * 923 * @param other the {@code URL} to compare against. 924 * @return {@code true} if they reference the same remote object; 925 * {@code false} otherwise. 926 */ 927 public boolean sameFile(URL other) { 928 return handler.sameFile(this, other); 929 } 930 931 /** 932 * Constructs a string representation of this {@code URL}. The 933 * string is created by calling the {@code toExternalForm} 934 * method of the stream protocol handler for this object. 935 * 936 * @return a string representation of this object. 937 * @see java.net.URL#URL(java.lang.String, java.lang.String, int, 938 * java.lang.String) 939 * @see java.net.URLStreamHandler#toExternalForm(java.net.URL) 940 */ 941 public String toString() { 942 return toExternalForm(); 943 } 944 945 /** 946 * Constructs a string representation of this {@code URL}. The 947 * string is created by calling the {@code toExternalForm} 948 * method of the stream protocol handler for this object. 949 * 950 * @return a string representation of this object. 951 * @see java.net.URL#URL(java.lang.String, java.lang.String, 952 * int, java.lang.String) 953 * @see java.net.URLStreamHandler#toExternalForm(java.net.URL) 954 */ 955 public String toExternalForm() { 956 return handler.toExternalForm(this); 957 } 958 959 /** 960 * Returns a {@link java.net.URI} equivalent to this URL. 961 * This method functions in the same way as {@code new URI (this.toString())}. 962 * <p>Note, any URL instance that complies with RFC 2396 can be converted 963 * to a URI. However, some URLs that are not strictly in compliance 964 * can not be converted to a URI. 965 * 966 * @exception URISyntaxException if this URL is not formatted strictly according to 967 * to RFC2396 and cannot be converted to a URI. 968 * 969 * @return a URI instance equivalent to this URL. 970 * @since 1.5 971 */ 972 public URI toURI() throws URISyntaxException { 973 return new URI (toString()); 974 } 975 976 /** 977 * Returns a {@link java.net.URLConnection URLConnection} instance that 978 * represents a connection to the remote object referred to by the 979 * {@code URL}. 980 * 981 * <P>A new instance of {@linkplain java.net.URLConnection URLConnection} is 982 * created every time when invoking the 983 * {@linkplain java.net.URLStreamHandler#openConnection(URL) 984 * URLStreamHandler.openConnection(URL)} method of the protocol handler for 985 * this URL.</P> 986 * 987 * <P>It should be noted that a URLConnection instance does not establish 988 * the actual network connection on creation. This will happen only when 989 * calling {@linkplain java.net.URLConnection#connect() URLConnection.connect()}.</P> 990 * 991 * <P>If for the URL's protocol (such as HTTP or JAR), there 992 * exists a public, specialized URLConnection subclass belonging 993 * to one of the following packages or one of their subpackages: 994 * java.lang, java.io, java.util, java.net, the connection 995 * returned will be of that subclass. For example, for HTTP an 996 * HttpURLConnection will be returned, and for JAR a 997 * JarURLConnection will be returned.</P> 998 * 999 * @return a {@link java.net.URLConnection URLConnection} linking 1000 * to the URL. 1001 * @exception IOException if an I/O exception occurs. 1002 * @see java.net.URL#URL(java.lang.String, java.lang.String, 1003 * int, java.lang.String) 1004 */ 1005 public URLConnection openConnection() throws java.io.IOException { 1006 return handler.openConnection(this); 1007 } 1008 1009 /** 1010 * Same as {@link #openConnection()}, except that the connection will be 1011 * made through the specified proxy; Protocol handlers that do not 1012 * support proxing will ignore the proxy parameter and make a 1013 * normal connection. 1014 * 1015 * Invoking this method preempts the system's default ProxySelector 1016 * settings. 1017 * 1018 * @param proxy the Proxy through which this connection 1019 * will be made. If direct connection is desired, 1020 * Proxy.NO_PROXY should be specified. 1021 * @return a {@code URLConnection} to the URL. 1022 * @exception IOException if an I/O exception occurs. 1023 * @exception SecurityException if a security manager is present 1024 * and the caller doesn't have permission to connect 1025 * to the proxy. 1026 * @exception IllegalArgumentException will be thrown if proxy is null, 1027 * or proxy has the wrong type 1028 * @exception UnsupportedOperationException if the subclass that 1029 * implements the protocol handler doesn't support 1030 * this method. 1031 * @see java.net.URL#URL(java.lang.String, java.lang.String, 1032 * int, java.lang.String) 1033 * @see java.net.URLConnection 1034 * @see java.net.URLStreamHandler#openConnection(java.net.URL, 1035 * java.net.Proxy) 1036 * @since 1.5 1037 */ 1038 public URLConnection openConnection(Proxy proxy) 1039 throws java.io.IOException { 1040 if (proxy == null) { 1041 throw new IllegalArgumentException("proxy can not be null"); 1042 } 1043 1044 // Create a copy of Proxy as a security measure 1045 Proxy p = proxy == Proxy.NO_PROXY ? Proxy.NO_PROXY : sun.net.ApplicationProxy.create(proxy); 1046 SecurityManager sm = System.getSecurityManager(); 1047 if (p.type() != Proxy.Type.DIRECT && sm != null) { 1048 InetSocketAddress epoint = (InetSocketAddress) p.address(); 1049 if (epoint.isUnresolved()) 1050 sm.checkConnect(epoint.getHostName(), epoint.getPort()); 1051 else 1052 sm.checkConnect(epoint.getAddress().getHostAddress(), 1053 epoint.getPort()); 1054 } 1055 return handler.openConnection(this, p); 1056 } 1057 1058 /** 1059 * Opens a connection to this {@code URL} and returns an 1060 * {@code InputStream} for reading from that connection. This 1061 * method is a shorthand for: 1062 * <blockquote><pre> 1063 * openConnection().getInputStream() 1064 * </pre></blockquote> 1065 * 1066 * @return an input stream for reading from the URL connection. 1067 * @exception IOException if an I/O exception occurs. 1068 * @see java.net.URL#openConnection() 1069 * @see java.net.URLConnection#getInputStream() 1070 */ 1071 public final InputStream openStream() throws java.io.IOException { 1072 return openConnection().getInputStream(); 1073 } 1074 1075 /** 1076 * Gets the contents of this URL. This method is a shorthand for: 1077 * <blockquote><pre> 1078 * openConnection().getContent() 1079 * </pre></blockquote> 1080 * 1081 * @return the contents of this URL. 1082 * @exception IOException if an I/O exception occurs. 1083 * @see java.net.URLConnection#getContent() 1084 */ 1085 public final Object getContent() throws java.io.IOException { 1086 return openConnection().getContent(); 1087 } 1088 1089 /** 1090 * Gets the contents of this URL. This method is a shorthand for: 1091 * <blockquote><pre> 1092 * openConnection().getContent(Class[]) 1093 * </pre></blockquote> 1094 * 1095 * @param classes an array of Java types 1096 * @return the content object of this URL that is the first match of 1097 * the types specified in the classes array. 1098 * null if none of the requested types are supported. 1099 * @exception IOException if an I/O exception occurs. 1100 * @see java.net.URLConnection#getContent(Class[]) 1101 * @since 1.3 1102 */ 1103 public final Object getContent(Class[] classes) 1104 throws java.io.IOException { 1105 return openConnection().getContent(classes); 1106 } 1107 1108 /** 1109 * The URLStreamHandler factory. 1110 */ 1111 static URLStreamHandlerFactory factory; 1112 1113 /** 1114 * Sets an application's {@code URLStreamHandlerFactory}. 1115 * This method can be called at most once in a given Java Virtual 1116 * Machine. 1117 * 1118 *<p> The {@code URLStreamHandlerFactory} instance is used to 1119 *construct a stream protocol handler from a protocol name. 1120 * 1121 * <p> If there is a security manager, this method first calls 1122 * the security manager's {@code checkSetFactory} method 1123 * to ensure the operation is allowed. 1124 * This could result in a SecurityException. 1125 * 1126 * @param fac the desired factory. 1127 * @exception Error if the application has already set a factory. 1128 * @exception SecurityException if a security manager exists and its 1129 * {@code checkSetFactory} method doesn't allow 1130 * the operation. 1131 * @see java.net.URL#URL(java.lang.String, java.lang.String, 1132 * int, java.lang.String) 1133 * @see java.net.URLStreamHandlerFactory 1134 * @see SecurityManager#checkSetFactory 1135 */ 1136 public static void setURLStreamHandlerFactory(URLStreamHandlerFactory fac) { 1137 synchronized (streamHandlerLock) { 1138 if (factory != null) { 1139 throw new Error("factory already defined"); 1140 } 1141 SecurityManager security = System.getSecurityManager(); 1142 if (security != null) { 1143 security.checkSetFactory(); 1144 } 1145 handlers.clear(); 1146 factory = fac; 1147 } 1148 } 1149 1150 /** 1151 * A table of protocol handlers. 1152 */ 1153 static Hashtable<String,URLStreamHandler> handlers = new Hashtable<>(); 1154 private static Object streamHandlerLock = new Object(); 1155 1156 /** 1157 * Returns the Stream Handler. 1158 * @param protocol the protocol to use 1159 */ 1160 static URLStreamHandler getURLStreamHandler(String protocol) { 1161 1162 URLStreamHandler handler = handlers.get(protocol); 1163 if (handler == null) { 1164 1165 boolean checkedWithFactory = false; 1166 1167 // Use the factory (if any) 1168 if (factory != null) { 1169 handler = factory.createURLStreamHandler(protocol); 1170 checkedWithFactory = true; 1171 } 1172 1173 // Try java protocol handler 1174 if (handler == null) { 1175 // Android-changed: Android doesn't need AccessController. 1176 // Remove unnecessary use of reflection for sun classes 1177 /* 1178 packagePrefixList 1179 = java.security.AccessController.doPrivileged( 1180 new sun.security.action.GetPropertyAction( 1181 protocolPathProp,"")); 1182 if (packagePrefixList != "") { 1183 packagePrefixList += "|"; 1184 } 1185 1186 // REMIND: decide whether to allow the "null" class prefix 1187 // or not. 1188 packagePrefixList += "sun.net.www.protocol"; 1189 */ 1190 final String packagePrefixList = System.getProperty(protocolPathProp,""); 1191 1192 StringTokenizer packagePrefixIter = 1193 new StringTokenizer(packagePrefixList, "|"); 1194 1195 while (handler == null && 1196 packagePrefixIter.hasMoreTokens()) { 1197 1198 String packagePrefix = 1199 packagePrefixIter.nextToken().trim(); 1200 try { 1201 String clsName = packagePrefix + "." + protocol + 1202 ".Handler"; 1203 Class<?> cls = null; 1204 try { 1205 ClassLoader cl = ClassLoader.getSystemClassLoader(); 1206 // BEGIN Android-changed: Fall back to thread's contextClassLoader. 1207 // http://b/25897689 1208 cls = Class.forName(clsName, true, cl); 1209 } catch (ClassNotFoundException e) { 1210 ClassLoader contextLoader = Thread.currentThread().getContextClassLoader(); 1211 if (contextLoader != null) { 1212 cls = Class.forName(clsName, true, contextLoader); 1213 } 1214 // END Android-changed: Fall back to thread's contextClassLoader. 1215 } 1216 if (cls != null) { 1217 handler = 1218 (URLStreamHandler)cls.newInstance(); 1219 } 1220 } catch (ReflectiveOperationException ignored) { 1221 } 1222 } 1223 } 1224 1225 // BEGIN Android-added: Custom built-in URLStreamHandlers for http, https. 1226 // Fallback to built-in stream handler. 1227 if (handler == null) { 1228 try { 1229 handler = createBuiltinHandler(protocol); 1230 } catch (Exception e) { 1231 throw new AssertionError(e); 1232 } 1233 } 1234 // END Android-added: Custom built-in URLStreamHandlers for http, https. 1235 1236 synchronized (streamHandlerLock) { 1237 1238 URLStreamHandler handler2 = null; 1239 1240 // Check again with hashtable just in case another 1241 // thread created a handler since we last checked 1242 handler2 = handlers.get(protocol); 1243 1244 if (handler2 != null) { 1245 return handler2; 1246 } 1247 1248 // Check with factory if another thread set a 1249 // factory since our last check 1250 if (!checkedWithFactory && factory != null) { 1251 handler2 = factory.createURLStreamHandler(protocol); 1252 } 1253 1254 if (handler2 != null) { 1255 // The handler from the factory must be given more 1256 // importance. Discard the default handler that 1257 // this thread created. 1258 handler = handler2; 1259 } 1260 1261 // Insert this handler into the hashtable 1262 if (handler != null) { 1263 handlers.put(protocol, handler); 1264 } 1265 1266 } 1267 } 1268 1269 return handler; 1270 1271 } 1272 1273 // BEGIN Android-added: Custom built-in URLStreamHandlers for http, https. 1274 /** 1275 * Returns an instance of the built-in handler for the given protocol, or null if none exists. 1276 */ 1277 private static URLStreamHandler createBuiltinHandler(String protocol) 1278 throws ClassNotFoundException, InstantiationException, IllegalAccessException { 1279 URLStreamHandler handler = null; 1280 if (protocol.equals("file")) { 1281 handler = new sun.net.www.protocol.file.Handler(); 1282 } else if (protocol.equals("ftp")) { 1283 handler = new sun.net.www.protocol.ftp.Handler(); 1284 } else if (protocol.equals("jar")) { 1285 handler = new sun.net.www.protocol.jar.Handler(); 1286 } else if (protocol.equals("http")) { 1287 handler = (URLStreamHandler)Class. 1288 forName("com.android.okhttp.HttpHandler").newInstance(); 1289 } else if (protocol.equals("https")) { 1290 handler = (URLStreamHandler)Class. 1291 forName("com.android.okhttp.HttpsHandler").newInstance(); 1292 } 1293 return handler; 1294 } 1295 1296 /** Names of implementation classes returned by {@link #createBuiltinHandler(String)}. */ 1297 private static Set<String> createBuiltinHandlerClassNames() { 1298 Set<String> result = new HashSet<>(); 1299 // Refer to class names rather than classes to avoid needlessly triggering <clinit>. 1300 result.add("sun.net.www.protocol.file.Handler"); 1301 result.add("sun.net.www.protocol.ftp.Handler"); 1302 result.add("sun.net.www.protocol.jar.Handler"); 1303 result.add("com.android.okhttp.HttpHandler"); 1304 result.add("com.android.okhttp.HttpsHandler"); 1305 return Collections.unmodifiableSet(result); 1306 } 1307 // END Android-added: Custom built-in URLStreamHandlers for http, https. 1308 1309 /** 1310 * @serialField protocol String 1311 * 1312 * @serialField host String 1313 * 1314 * @serialField port int 1315 * 1316 * @serialField authority String 1317 * 1318 * @serialField file String 1319 * 1320 * @serialField ref String 1321 * 1322 * @serialField hashCode int 1323 * 1324 */ 1325 private static final ObjectStreamField[] serialPersistentFields = { 1326 new ObjectStreamField("protocol", String.class), 1327 new ObjectStreamField("host", String.class), 1328 new ObjectStreamField("port", int.class), 1329 new ObjectStreamField("authority", String.class), 1330 new ObjectStreamField("file", String.class), 1331 new ObjectStreamField("ref", String.class), 1332 // Android-changed: App compat: hashCode should not be serialized. 1333 // new ObjectStreamField("hashCode", int.class), }; 1334 }; 1335 1336 /** 1337 * WriteObject is called to save the state of the URL to an 1338 * ObjectOutputStream. The handler is not saved since it is 1339 * specific to this system. 1340 * 1341 * @serialData the default write object value. When read back in, 1342 * the reader must ensure that calling getURLStreamHandler with 1343 * the protocol variable returns a valid URLStreamHandler and 1344 * throw an IOException if it does not. 1345 */ 1346 private synchronized void writeObject(java.io.ObjectOutputStream s) 1347 throws IOException 1348 { 1349 s.defaultWriteObject(); // write the fields 1350 } 1351 1352 /** 1353 * readObject is called to restore the state of the URL from the 1354 * stream. It reads the components of the URL and finds the local 1355 * stream handler. 1356 */ 1357 private synchronized void readObject(java.io.ObjectInputStream s) 1358 throws IOException, ClassNotFoundException { 1359 GetField gf = s.readFields(); 1360 String protocol = (String)gf.get("protocol", null); 1361 if (getURLStreamHandler(protocol) == null) { 1362 throw new IOException("unknown protocol: " + protocol); 1363 } 1364 String host = (String)gf.get("host", null); 1365 int port = gf.get("port", -1); 1366 String authority = (String)gf.get("authority", null); 1367 String file = (String)gf.get("file", null); 1368 String ref = (String)gf.get("ref", null); 1369 // Android-changed: App compat: hashCode should not be serialized. 1370 // int hashCode = gf.get("hashCode", -1); 1371 final int hashCode = -1; 1372 if (authority == null 1373 && ((host != null && host.length() > 0) || port != -1)) { 1374 if (host == null) 1375 host = ""; 1376 authority = (port == -1) ? host : host + ":" + port; 1377 } 1378 tempState = new UrlDeserializedState(protocol, host, port, authority, 1379 file, ref, hashCode); 1380 } 1381 1382 /** 1383 * Replaces the de-serialized object with an URL object. 1384 * 1385 * @return a newly created object from the deserialzed state. 1386 * 1387 * @throws ObjectStreamException if a new object replacing this 1388 * object could not be created 1389 */ 1390 1391 private Object readResolve() throws ObjectStreamException { 1392 1393 URLStreamHandler handler = null; 1394 // already been checked in readObject 1395 handler = getURLStreamHandler(tempState.getProtocol()); 1396 1397 URL replacementURL = null; 1398 if (isBuiltinStreamHandler(handler.getClass().getName())) { 1399 replacementURL = fabricateNewURL(); 1400 } else { 1401 replacementURL = setDeserializedFields(handler); 1402 } 1403 return replacementURL; 1404 } 1405 1406 private URL setDeserializedFields(URLStreamHandler handler) { 1407 URL replacementURL; 1408 String userInfo = null; 1409 String protocol = tempState.getProtocol(); 1410 String host = tempState.getHost(); 1411 int port = tempState.getPort(); 1412 String authority = tempState.getAuthority(); 1413 String file = tempState.getFile(); 1414 String ref = tempState.getRef(); 1415 int hashCode = tempState.getHashCode(); 1416 1417 1418 // Construct authority part 1419 if (authority == null 1420 && ((host != null && host.length() > 0) || port != -1)) { 1421 if (host == null) 1422 host = ""; 1423 authority = (port == -1) ? host : host + ":" + port; 1424 1425 // Handle hosts with userInfo in them 1426 int at = host.lastIndexOf('@'); 1427 if (at != -1) { 1428 userInfo = host.substring(0, at); 1429 host = host.substring(at+1); 1430 } 1431 } else if (authority != null) { 1432 // Construct user info part 1433 int ind = authority.indexOf('@'); 1434 if (ind != -1) 1435 userInfo = authority.substring(0, ind); 1436 } 1437 1438 // Construct path and query part 1439 String path = null; 1440 String query = null; 1441 if (file != null) { 1442 // Fix: only do this if hierarchical? 1443 int q = file.lastIndexOf('?'); 1444 if (q != -1) { 1445 query = file.substring(q+1); 1446 path = file.substring(0, q); 1447 } else 1448 path = file; 1449 } 1450 1451 // Set the object fields. 1452 this.protocol = protocol; 1453 this.host = host; 1454 this.port = port; 1455 this.file = file; 1456 this.authority = authority; 1457 this.ref = ref; 1458 this.hashCode = hashCode; 1459 this.handler = handler; 1460 this.query = query; 1461 this.path = path; 1462 this.userInfo = userInfo; 1463 replacementURL = this; 1464 return replacementURL; 1465 } 1466 1467 private URL fabricateNewURL() 1468 throws InvalidObjectException { 1469 // create URL string from deserialized object 1470 URL replacementURL = null; 1471 String urlString = tempState.reconstituteUrlString(); 1472 1473 try { 1474 replacementURL = new URL(urlString); 1475 } catch (MalformedURLException mEx) { 1476 resetState(); 1477 InvalidObjectException invoEx = new InvalidObjectException( 1478 "Malformed URL: " + urlString); 1479 invoEx.initCause(mEx); 1480 throw invoEx; 1481 } 1482 replacementURL.setSerializedHashCode(tempState.getHashCode()); 1483 resetState(); 1484 return replacementURL; 1485 } 1486 1487 private boolean isBuiltinStreamHandler(String handlerClassName) { 1488 // Android-changed: Some built-in handlers (eg. HttpHandler) are not in sun.net.www.protocol. 1489 // return (handlerClassName.startsWith(BUILTIN_HANDLERS_PREFIX)); 1490 return BUILTIN_HANDLER_CLASS_NAMES.contains(handlerClassName); 1491 } 1492 1493 private void resetState() { 1494 this.protocol = null; 1495 this.host = null; 1496 this.port = -1; 1497 this.file = null; 1498 this.authority = null; 1499 this.ref = null; 1500 this.hashCode = -1; 1501 this.handler = null; 1502 this.query = null; 1503 this.path = null; 1504 this.userInfo = null; 1505 this.tempState = null; 1506 } 1507 1508 private void setSerializedHashCode(int hc) { 1509 this.hashCode = hc; 1510 } 1511 } 1512 1513 class Parts { 1514 String path, query, ref; 1515 1516 // Android-changed: App compat. Prepend '/' if host is null / empty. 1517 // Parts(String file) 1518 Parts(String file, String host) { 1519 int ind = file.indexOf('#'); 1520 ref = ind < 0 ? null: file.substring(ind + 1); 1521 file = ind < 0 ? file: file.substring(0, ind); 1522 int q = file.lastIndexOf('?'); 1523 if (q != -1) { 1524 query = file.substring(q+1); 1525 path = file.substring(0, q); 1526 } else { 1527 path = file; 1528 } 1529 // BEGIN Android-changed: App compat. Prepend '/' if host is null / empty. 1530 if (path != null && path.length() > 0 && path.charAt(0) != '/' && 1531 host != null && !host.isEmpty()) { 1532 path = '/' + path; 1533 } 1534 // END Android-changed: App compat. Prepend '/' if host is null / empty. 1535 } 1536 1537 String getPath() { 1538 return path; 1539 } 1540 1541 String getQuery() { 1542 return query; 1543 } 1544 1545 String getRef() { 1546 return ref; 1547 } 1548 } 1549 1550 final class UrlDeserializedState { 1551 private final String protocol; 1552 private final String host; 1553 private final int port; 1554 private final String authority; 1555 private final String file; 1556 private final String ref; 1557 private final int hashCode; 1558 1559 public UrlDeserializedState(String protocol, 1560 String host, int port, 1561 String authority, String file, 1562 String ref, int hashCode) { 1563 this.protocol = protocol; 1564 this.host = host; 1565 this.port = port; 1566 this.authority = authority; 1567 this.file = file; 1568 this.ref = ref; 1569 this.hashCode = hashCode; 1570 } 1571 1572 String getProtocol() { 1573 return protocol; 1574 } 1575 1576 String getHost() { 1577 return host; 1578 } 1579 1580 String getAuthority () { 1581 return authority; 1582 } 1583 1584 int getPort() { 1585 return port; 1586 } 1587 1588 String getFile () { 1589 return file; 1590 } 1591 1592 String getRef () { 1593 return ref; 1594 } 1595 1596 int getHashCode () { 1597 return hashCode; 1598 } 1599 1600 String reconstituteUrlString() { 1601 1602 // pre-compute length of StringBuilder 1603 int len = protocol.length() + 1; 1604 if (authority != null && authority.length() > 0) 1605 len += 2 + authority.length(); 1606 if (file != null) { 1607 len += file.length(); 1608 } 1609 if (ref != null) 1610 len += 1 + ref.length(); 1611 StringBuilder result = new StringBuilder(len); 1612 result.append(protocol); 1613 result.append(":"); 1614 if (authority != null && authority.length() > 0) { 1615 result.append("//"); 1616 result.append(authority); 1617 } 1618 if (file != null) { 1619 result.append(file); 1620 } 1621 if (ref != null) { 1622 result.append("#"); 1623 result.append(ref); 1624 } 1625 return result.toString(); 1626 } 1627 } 1628
