--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/net/URL.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,1720 @@
+/*
+ * Copyright (c) 1995, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.net;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.spi.URLStreamHandlerProvider;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.Hashtable;
+import java.io.InvalidObjectException;
+import java.io.ObjectStreamException;
+import java.io.ObjectStreamField;
+import java.io.ObjectInputStream.GetField;
+import java.util.Iterator;
+import java.util.Locale;
+import java.util.NoSuchElementException;
+import java.util.ServiceConfigurationError;
+import java.util.ServiceLoader;
+
+import jdk.internal.misc.JavaNetURLAccess;
+import jdk.internal.misc.SharedSecrets;
+import sun.security.util.SecurityConstants;
+import sun.security.action.GetPropertyAction;
+
+/**
+ * Class {@code URL} represents a Uniform Resource
+ * Locator, a pointer to a "resource" on the World
+ * Wide Web. A resource can be something as simple as a file or a
+ * directory, or it can be a reference to a more complicated object,
+ * such as a query to a database or to a search engine. More
+ * information on the types of URLs and their formats can be found at:
+ * <a href=
+ * "http://web.archive.org/web/20051219043731/http://archive.ncsa.uiuc.edu/SDG/Software/Mosaic/Demo/url-primer.html">
+ * <i>Types of URL</i></a>
+ * <p>
+ * In general, a URL can be broken into several parts. Consider the
+ * following example:
+ * <blockquote><pre>
+ * http://www.example.com/docs/resource1.html
+ * </pre></blockquote>
+ * <p>
+ * The URL above indicates that the protocol to use is
+ * {@code http} (HyperText Transfer Protocol) and that the
+ * information resides on a host machine named
+ * {@code www.example.com}. The information on that host
+ * machine is named {@code /docs/resource1.html}. The exact
+ * meaning of this name on the host machine is both protocol
+ * dependent and host dependent. The information normally resides in
+ * a file, but it could be generated on the fly. This component of
+ * the URL is called the <i>path</i> component.
+ * <p>
+ * A URL can optionally specify a "port", which is the
+ * port number to which the TCP connection is made on the remote host
+ * machine. If the port is not specified, the default port for
+ * the protocol is used instead. For example, the default port for
+ * {@code http} is {@code 80}. An alternative port could be
+ * specified as:
+ * <blockquote><pre>
+ * http://www.example.com:1080/docs/resource1.html
+ * </pre></blockquote>
+ * <p>
+ * The syntax of {@code URL} is defined by <a
+ * href="http://www.ietf.org/rfc/rfc2396.txt"><i>RFC 2396: Uniform
+ * Resource Identifiers (URI): Generic Syntax</i></a>, amended by <a
+ * href="http://www.ietf.org/rfc/rfc2732.txt"><i>RFC 2732: Format for
+ * Literal IPv6 Addresses in URLs</i></a>. The Literal IPv6 address format
+ * also supports scope_ids. The syntax and usage of scope_ids is described
+ * <a href="Inet6Address.html#scoped">here</a>.
+ * <p>
+ * A URL may have appended to it a "fragment", also known
+ * as a "ref" or a "reference". The fragment is indicated by the sharp
+ * sign character "#" followed by more characters. For example,
+ * <blockquote><pre>
+ * http://java.sun.com/index.html#chapter1
+ * </pre></blockquote>
+ * <p>
+ * This fragment is not technically part of the URL. Rather, it
+ * indicates that after the specified resource is retrieved, the
+ * application is specifically interested in that part of the
+ * document that has the tag {@code chapter1} attached to it. The
+ * meaning of a tag is resource specific.
+ * <p>
+ * An application can also specify a "relative URL",
+ * which contains only enough information to reach the resource
+ * relative to another URL. Relative URLs are frequently used within
+ * HTML pages. For example, if the contents of the URL:
+ * <blockquote><pre>
+ * http://java.sun.com/index.html
+ * </pre></blockquote>
+ * contained within it the relative URL:
+ * <blockquote><pre>
+ * FAQ.html
+ * </pre></blockquote>
+ * it would be a shorthand for:
+ * <blockquote><pre>
+ * http://java.sun.com/FAQ.html
+ * </pre></blockquote>
+ * <p>
+ * The relative URL need not specify all the components of a URL. If
+ * the protocol, host name, or port number is missing, the value is
+ * inherited from the fully specified URL. The file component must be
+ * specified. The optional fragment is not inherited.
+ * <p>
+ * The URL class does not itself encode or decode any URL components
+ * according to the escaping mechanism defined in RFC2396. It is the
+ * responsibility of the caller to encode any fields, which need to be
+ * escaped prior to calling URL, and also to decode any escaped fields,
+ * that are returned from URL. Furthermore, because URL has no knowledge
+ * of URL escaping, it does not recognise equivalence between the encoded
+ * or decoded form of the same URL. For example, the two URLs:<br>
+ * <pre> http://foo.com/hello world/ and http://foo.com/hello%20world</pre>
+ * would be considered not equal to each other.
+ * <p>
+ * Note, the {@link java.net.URI} class does perform escaping of its
+ * component fields in certain circumstances. The recommended way
+ * to manage the encoding and decoding of URLs is to use {@link java.net.URI},
+ * and to convert between these two classes using {@link #toURI()} and
+ * {@link URI#toURL()}.
+ * <p>
+ * The {@link URLEncoder} and {@link URLDecoder} classes can also be
+ * used, but only for HTML form encoding, which is not the same
+ * as the encoding scheme defined in RFC2396.
+ *
+ * @author James Gosling
+ * @since 1.0
+ */
+public final class URL implements java.io.Serializable {
+
+ static final String BUILTIN_HANDLERS_PREFIX = "sun.net.www.protocol";
+ static final long serialVersionUID = -7627629688361524110L;
+
+ /**
+ * The property which specifies the package prefix list to be scanned
+ * for protocol handlers. The value of this property (if any) should
+ * be a vertical bar delimited list of package names to search through
+ * for a protocol handler to load. The policy of this class is that
+ * all protocol handlers will be in a class called <protocolname>.Handler,
+ * and each package in the list is examined in turn for a matching
+ * handler. If none are found (or the property is not specified), the
+ * default package prefix, sun.net.www.protocol, is used. The search
+ * proceeds from the first package in the list to the last and stops
+ * when a match is found.
+ */
+ private static final String protocolPathProp = "java.protocol.handler.pkgs";
+
+ /**
+ * The protocol to use (ftp, http, nntp, ... etc.) .
+ * @serial
+ */
+ private String protocol;
+
+ /**
+ * The host name to connect to.
+ * @serial
+ */
+ private String host;
+
+ /**
+ * The protocol port to connect to.
+ * @serial
+ */
+ private int port = -1;
+
+ /**
+ * The specified file name on that host. {@code file} is
+ * defined as {@code path[?query]}
+ * @serial
+ */
+ private String file;
+
+ /**
+ * The query part of this URL.
+ */
+ private transient String query;
+
+ /**
+ * The authority part of this URL.
+ * @serial
+ */
+ private String authority;
+
+ /**
+ * The path part of this URL.
+ */
+ private transient String path;
+
+ /**
+ * The userinfo part of this URL.
+ */
+ private transient String userInfo;
+
+ /**
+ * # reference.
+ * @serial
+ */
+ private String ref;
+
+ /**
+ * The host's IP address, used in equals and hashCode.
+ * Computed on demand. An uninitialized or unknown hostAddress is null.
+ */
+ transient InetAddress hostAddress;
+
+ /**
+ * The URLStreamHandler for this URL.
+ */
+ transient URLStreamHandler handler;
+
+ /* Our hash code.
+ * @serial
+ */
+ private int hashCode = -1;
+
+ private transient UrlDeserializedState tempState;
+
+ /**
+ * Creates a {@code URL} object from the specified
+ * {@code protocol}, {@code host}, {@code port}
+ * number, and {@code file}.<p>
+ *
+ * {@code host} can be expressed as a host name or a literal
+ * IP address. If IPv6 literal address is used, it should be
+ * enclosed in square brackets ({@code '['} and {@code ']'}), as
+ * specified by <a
+ * href="http://www.ietf.org/rfc/rfc2732.txt">RFC 2732</a>;
+ * However, the literal IPv6 address format defined in <a
+ * href="http://www.ietf.org/rfc/rfc2373.txt"><i>RFC 2373: IP
+ * Version 6 Addressing Architecture</i></a> is also accepted.<p>
+ *
+ * Specifying a {@code port} number of {@code -1}
+ * indicates that the URL should use the default port for the
+ * protocol.<p>
+ *
+ * If this is the first URL object being created with the specified
+ * protocol, a <i>stream protocol handler</i> object, an instance of
+ * class {@code URLStreamHandler}, is created for that protocol:
+ * <ol>
+ * <li>If the application has previously set up an instance of
+ * {@code URLStreamHandlerFactory} as the stream handler factory,
+ * then the {@code createURLStreamHandler} method of that instance
+ * is called with the protocol string as an argument to create the
+ * stream protocol handler.
+ * <li>If no {@code URLStreamHandlerFactory} has yet been set up,
+ * or if the factory's {@code createURLStreamHandler} method
+ * returns {@code null}, then the {@linkplain java.util.ServiceLoader
+ * ServiceLoader} mechanism is used to locate {@linkplain
+ * java.net.spi.URLStreamHandlerProvider URLStreamHandlerProvider}
+ * implementations using the system class
+ * loader. The order that providers are located is implementation
+ * specific, and an implementation is free to cache the located
+ * providers. A {@linkplain java.util.ServiceConfigurationError
+ * ServiceConfigurationError}, {@code Error} or {@code RuntimeException}
+ * thrown from the {@code createURLStreamHandler}, if encountered, will
+ * be propagated to the calling thread. The {@code
+ * createURLStreamHandler} method of each provider, if instantiated, is
+ * invoked, with the protocol string, until a provider returns non-null,
+ * or all providers have been exhausted.
+ * <li>If the previous step fails to find a protocol handler, the
+ * constructor reads the value of the system property:
+ * <blockquote>{@code
+ * java.protocol.handler.pkgs
+ * }</blockquote>
+ * If the value of that system property is not {@code null},
+ * it is interpreted as a list of packages separated by a vertical
+ * slash character '{@code |}'. The constructor tries to load
+ * the class named:
+ * <blockquote>{@code
+ * <package>.<protocol>.Handler
+ * }</blockquote>
+ * where {@code <package>} is replaced by the name of the package
+ * and {@code <protocol>} is replaced by the name of the protocol.
+ * If this class does not exist, or if the class exists but it is not
+ * a subclass of {@code URLStreamHandler}, then the next package
+ * in the list is tried.
+ * <li>If the previous step fails to find a protocol handler, then the
+ * constructor tries to load a built-in protocol handler.
+ * If this class does not exist, or if the class exists but it is not a
+ * subclass of {@code URLStreamHandler}, then a
+ * {@code MalformedURLException} is thrown.
+ * </ol>
+ *
+ * <p>Protocol handlers for the following protocols are guaranteed
+ * to exist on the search path :-
+ * <blockquote><pre>
+ * http, https, file, and jar
+ * </pre></blockquote>
+ * Protocol handlers for additional protocols may also be available.
+ * Some protocol handlers, for example those used for loading platform
+ * classes or classes on the class path, may not be overridden. The details
+ * of such restrictions, and when those restrictions apply (during
+ * initialization of the runtime for example), are implementation specific
+ * and therefore not specified
+ *
+ * <p>No validation of the inputs is performed by this constructor.
+ *
+ * @param protocol the name of the protocol to use.
+ * @param host the name of the host.
+ * @param port the port number on the host.
+ * @param file the file on the host
+ * @exception MalformedURLException if an unknown protocol or the port
+ * is a negative number other than -1
+ * @see java.lang.System#getProperty(java.lang.String)
+ * @see java.net.URL#setURLStreamHandlerFactory(
+ * java.net.URLStreamHandlerFactory)
+ * @see java.net.URLStreamHandler
+ * @see java.net.URLStreamHandlerFactory#createURLStreamHandler(
+ * java.lang.String)
+ */
+ public URL(String protocol, String host, int port, String file)
+ throws MalformedURLException
+ {
+ this(protocol, host, port, file, null);
+ }
+
+ /**
+ * Creates a URL from the specified {@code protocol}
+ * name, {@code host} name, and {@code file} name. The
+ * default port for the specified protocol is used.
+ * <p>
+ * This constructor is equivalent to the four-argument
+ * constructor with the only difference of using the
+ * default port for the specified protocol.
+ *
+ * No validation of the inputs is performed by this constructor.
+ *
+ * @param protocol the name of the protocol to use.
+ * @param host the name of the host.
+ * @param file the file on the host.
+ * @exception MalformedURLException if an unknown protocol is specified.
+ * @see java.net.URL#URL(java.lang.String, java.lang.String,
+ * int, java.lang.String)
+ */
+ public URL(String protocol, String host, String file)
+ throws MalformedURLException {
+ this(protocol, host, -1, file);
+ }
+
+ /**
+ * Creates a {@code URL} object from the specified
+ * {@code protocol}, {@code host}, {@code port}
+ * number, {@code file}, and {@code handler}. Specifying
+ * a {@code port} number of {@code -1} indicates that
+ * the URL should use the default port for the protocol. Specifying
+ * a {@code handler} of {@code null} indicates that the URL
+ * should use a default stream handler for the protocol, as outlined
+ * for:
+ * java.net.URL#URL(java.lang.String, java.lang.String, int,
+ * java.lang.String)
+ *
+ * <p>If the handler is not null and there is a security manager,
+ * the security manager's {@code checkPermission}
+ * method is called with a
+ * {@code NetPermission("specifyStreamHandler")} permission.
+ * This may result in a SecurityException.
+ *
+ * No validation of the inputs is performed by this constructor.
+ *
+ * @param protocol the name of the protocol to use.
+ * @param host the name of the host.
+ * @param port the port number on the host.
+ * @param file the file on the host
+ * @param handler the stream handler for the URL.
+ * @exception MalformedURLException if an unknown protocol or the port
+ is a negative number other than -1
+ * @exception SecurityException
+ * if a security manager exists and its
+ * {@code checkPermission} method doesn't allow
+ * specifying a stream handler explicitly.
+ * @see java.lang.System#getProperty(java.lang.String)
+ * @see java.net.URL#setURLStreamHandlerFactory(
+ * java.net.URLStreamHandlerFactory)
+ * @see java.net.URLStreamHandler
+ * @see java.net.URLStreamHandlerFactory#createURLStreamHandler(
+ * java.lang.String)
+ * @see SecurityManager#checkPermission
+ * @see java.net.NetPermission
+ */
+ public URL(String protocol, String host, int port, String file,
+ URLStreamHandler handler) throws MalformedURLException {
+ if (handler != null) {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ // check for permission to specify a handler
+ checkSpecifyHandler(sm);
+ }
+ }
+
+ protocol = toLowerCase(protocol);
+ this.protocol = protocol;
+ if (host != null) {
+
+ /**
+ * if host is a literal IPv6 address,
+ * we will make it conform to RFC 2732
+ */
+ if (host.indexOf(':') >= 0 && !host.startsWith("[")) {
+ host = "["+host+"]";
+ }
+ this.host = host;
+
+ if (port < -1) {
+ throw new MalformedURLException("Invalid port number :" +
+ port);
+ }
+ this.port = port;
+ authority = (port == -1) ? host : host + ":" + port;
+ }
+
+ int index = file.indexOf('#');
+ this.ref = index < 0 ? null : file.substring(index + 1);
+ file = index < 0 ? file : file.substring(0, index);
+ int q = file.lastIndexOf('?');
+ if (q != -1) {
+ this.query = file.substring(q + 1);
+ this.path = file.substring(0, q);
+ this.file = path + "?" + query;
+ } else {
+ this.path = file;
+ this.file = path;
+ }
+
+ // Note: we don't do validation of the URL here. Too risky to change
+ // right now, but worth considering for future reference. -br
+ if (handler == null &&
+ (handler = getURLStreamHandler(protocol)) == null) {
+ throw new MalformedURLException("unknown protocol: " + protocol);
+ }
+ this.handler = handler;
+ }
+
+ /**
+ * Creates a {@code URL} object from the {@code String}
+ * representation.
+ * <p>
+ * This constructor is equivalent to a call to the two-argument
+ * constructor with a {@code null} first argument.
+ *
+ * @param spec the {@code String} to parse as a URL.
+ * @exception MalformedURLException if no protocol is specified, or an
+ * unknown protocol is found, or {@code spec} is {@code null},
+ * or the parsed URL fails to comply with the specific syntax
+ * of the associated protocol.
+ * @see java.net.URL#URL(java.net.URL, java.lang.String)
+ */
+ public URL(String spec) throws MalformedURLException {
+ this(null, spec);
+ }
+
+ /**
+ * Creates a URL by parsing the given spec within a specified context.
+ *
+ * The new URL is created from the given context URL and the spec
+ * argument as described in
+ * RFC2396 "Uniform Resource Identifiers : Generic * Syntax" :
+ * <blockquote><pre>
+ * <scheme>://<authority><path>?<query>#<fragment>
+ * </pre></blockquote>
+ * The reference is parsed into the scheme, authority, path, query and
+ * fragment parts. If the path component is empty and the scheme,
+ * authority, and query components are undefined, then the new URL is a
+ * reference to the current document. Otherwise, the fragment and query
+ * parts present in the spec are used in the new URL.
+ * <p>
+ * If the scheme component is defined in the given spec and does not match
+ * the scheme of the context, then the new URL is created as an absolute
+ * URL based on the spec alone. Otherwise the scheme component is inherited
+ * from the context URL.
+ * <p>
+ * If the authority component is present in the spec then the spec is
+ * treated as absolute and the spec authority and path will replace the
+ * context authority and path. If the authority component is absent in the
+ * spec then the authority of the new URL will be inherited from the
+ * context.
+ * <p>
+ * If the spec's path component begins with a slash character
+ * "/" then the
+ * path is treated as absolute and the spec path replaces the context path.
+ * <p>
+ * Otherwise, the path is treated as a relative path and is appended to the
+ * context path, as described in RFC2396. Also, in this case,
+ * the path is canonicalized through the removal of directory
+ * changes made by occurrences of ".." and ".".
+ * <p>
+ * For a more detailed description of URL parsing, refer to RFC2396.
+ *
+ * @param context the context in which to parse the specification.
+ * @param spec the {@code String} to parse as a URL.
+ * @exception MalformedURLException if no protocol is specified, or an
+ * unknown protocol is found, or {@code spec} is {@code null},
+ * or the parsed URL fails to comply with the specific syntax
+ * of the associated protocol.
+ * @see java.net.URL#URL(java.lang.String, java.lang.String,
+ * int, java.lang.String)
+ * @see java.net.URLStreamHandler
+ * @see java.net.URLStreamHandler#parseURL(java.net.URL,
+ * java.lang.String, int, int)
+ */
+ public URL(URL context, String spec) throws MalformedURLException {
+ this(context, spec, null);
+ }
+
+ /**
+ * Creates a URL by parsing the given spec with the specified handler
+ * within a specified context. If the handler is null, the parsing
+ * occurs as with the two argument constructor.
+ *
+ * @param context the context in which to parse the specification.
+ * @param spec the {@code String} to parse as a URL.
+ * @param handler the stream handler for the URL.
+ * @exception MalformedURLException if no protocol is specified, or an
+ * unknown protocol is found, or {@code spec} is {@code null},
+ * or the parsed URL fails to comply with the specific syntax
+ * of the associated protocol.
+ * @exception SecurityException
+ * if a security manager exists and its
+ * {@code checkPermission} method doesn't allow
+ * specifying a stream handler.
+ * @see java.net.URL#URL(java.lang.String, java.lang.String,
+ * int, java.lang.String)
+ * @see java.net.URLStreamHandler
+ * @see java.net.URLStreamHandler#parseURL(java.net.URL,
+ * java.lang.String, int, int)
+ */
+ public URL(URL context, String spec, URLStreamHandler handler)
+ throws MalformedURLException
+ {
+ String original = spec;
+ int i, limit, c;
+ int start = 0;
+ String newProtocol = null;
+ boolean aRef=false;
+ boolean isRelative = false;
+
+ // Check for permission to specify a handler
+ if (handler != null) {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ checkSpecifyHandler(sm);
+ }
+ }
+
+ try {
+ limit = spec.length();
+ while ((limit > 0) && (spec.charAt(limit - 1) <= ' ')) {
+ limit--; //eliminate trailing whitespace
+ }
+ while ((start < limit) && (spec.charAt(start) <= ' ')) {
+ start++; // eliminate leading whitespace
+ }
+
+ if (spec.regionMatches(true, start, "url:", 0, 4)) {
+ start += 4;
+ }
+ if (start < spec.length() && spec.charAt(start) == '#') {
+ /* we're assuming this is a ref relative to the context URL.
+ * This means protocols cannot start w/ '#', but we must parse
+ * ref URL's like: "hello:there" w/ a ':' in them.
+ */
+ aRef=true;
+ }
+ for (i = start ; !aRef && (i < limit) &&
+ ((c = spec.charAt(i)) != '/') ; i++) {
+ if (c == ':') {
+ String s = toLowerCase(spec.substring(start, i));
+ if (isValidProtocol(s)) {
+ newProtocol = s;
+ start = i + 1;
+ }
+ break;
+ }
+ }
+
+ // Only use our context if the protocols match.
+ protocol = newProtocol;
+ if ((context != null) && ((newProtocol == null) ||
+ newProtocol.equalsIgnoreCase(context.protocol))) {
+ // inherit the protocol handler from the context
+ // if not specified to the constructor
+ if (handler == null) {
+ handler = context.handler;
+ }
+
+ // If the context is a hierarchical URL scheme and the spec
+ // contains a matching scheme then maintain backwards
+ // compatibility and treat it as if the spec didn't contain
+ // the scheme; see 5.2.3 of RFC2396
+ if (context.path != null && context.path.startsWith("/"))
+ newProtocol = null;
+
+ if (newProtocol == null) {
+ protocol = context.protocol;
+ authority = context.authority;
+ userInfo = context.userInfo;
+ host = context.host;
+ port = context.port;
+ file = context.file;
+ path = context.path;
+ isRelative = true;
+ }
+ }
+
+ if (protocol == null) {
+ throw new MalformedURLException("no protocol: "+original);
+ }
+
+ // Get the protocol handler if not specified or the protocol
+ // of the context could not be used
+ if (handler == null &&
+ (handler = getURLStreamHandler(protocol)) == null) {
+ throw new MalformedURLException("unknown protocol: "+protocol);
+ }
+
+ this.handler = handler;
+
+ i = spec.indexOf('#', start);
+ if (i >= 0) {
+ ref = spec.substring(i + 1, limit);
+ limit = i;
+ }
+
+ /*
+ * Handle special case inheritance of query and fragment
+ * implied by RFC2396 section 5.2.2.
+ */
+ if (isRelative && start == limit) {
+ query = context.query;
+ if (ref == null) {
+ ref = context.ref;
+ }
+ }
+
+ handler.parseURL(this, spec, start, limit);
+
+ } catch(MalformedURLException e) {
+ throw e;
+ } catch(Exception e) {
+ MalformedURLException exception = new MalformedURLException(e.getMessage());
+ exception.initCause(e);
+ throw exception;
+ }
+ }
+
+ /**
+ * Creates a URL from a URI, as if by invoking {@code uri.toURL()}.
+ *
+ * @see java.net.URI#toURL()
+ */
+ static URL fromURI(URI uri) throws MalformedURLException {
+ if (!uri.isAbsolute()) {
+ throw new IllegalArgumentException("URI is not absolute");
+ }
+ String protocol = uri.getScheme();
+
+ // In general we need to go via Handler.parseURL, but for the jrt
+ // protocol we enforce that the Handler is not overrideable and can
+ // optimize URI to URL conversion.
+ //
+ // Case-sensitive comparison for performance; malformed protocols will
+ // be handled correctly by the slow path.
+ if (protocol.equals("jrt") && !uri.isOpaque()
+ && uri.getRawFragment() == null) {
+
+ String query = uri.getRawQuery();
+ String path = uri.getRawPath();
+ String file = (query == null) ? path : path + "?" + query;
+
+ // URL represent undefined host as empty string while URI use null
+ String host = uri.getHost();
+ if (host == null) {
+ host = "";
+ }
+
+ int port = uri.getPort();
+
+ return new URL("jrt", host, port, file, null);
+ } else {
+ return new URL((URL)null, uri.toString(), null);
+ }
+ }
+
+ /*
+ * Returns true if specified string is a valid protocol name.
+ */
+ private boolean isValidProtocol(String protocol) {
+ int len = protocol.length();
+ if (len < 1)
+ return false;
+ char c = protocol.charAt(0);
+ if (!Character.isLetter(c))
+ return false;
+ for (int i = 1; i < len; i++) {
+ c = protocol.charAt(i);
+ if (!Character.isLetterOrDigit(c) && c != '.' && c != '+' &&
+ c != '-') {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /*
+ * Checks for permission to specify a stream handler.
+ */
+ private void checkSpecifyHandler(SecurityManager sm) {
+ sm.checkPermission(SecurityConstants.SPECIFY_HANDLER_PERMISSION);
+ }
+
+ /**
+ * Sets the fields of the URL. This is not a public method so that
+ * only URLStreamHandlers can modify URL fields. URLs are
+ * otherwise constant.
+ *
+ * @param protocol the name of the protocol to use
+ * @param host the name of the host
+ @param port the port number on the host
+ * @param file the file on the host
+ * @param ref the internal reference in the URL
+ */
+ void set(String protocol, String host, int port,
+ String file, String ref) {
+ synchronized (this) {
+ this.protocol = protocol;
+ this.host = host;
+ authority = port == -1 ? host : host + ":" + port;
+ this.port = port;
+ this.file = file;
+ this.ref = ref;
+ /* This is very important. We must recompute this after the
+ * URL has been changed. */
+ hashCode = -1;
+ hostAddress = null;
+ int q = file.lastIndexOf('?');
+ if (q != -1) {
+ query = file.substring(q+1);
+ path = file.substring(0, q);
+ } else
+ path = file;
+ }
+ }
+
+ /**
+ * Sets the specified 8 fields of the URL. This is not a public method so
+ * that only URLStreamHandlers can modify URL fields. URLs are otherwise
+ * constant.
+ *
+ * @param protocol the name of the protocol to use
+ * @param host the name of the host
+ * @param port the port number on the host
+ * @param authority the authority part for the url
+ * @param userInfo the username and password
+ * @param path the file on the host
+ * @param ref the internal reference in the URL
+ * @param query the query part of this URL
+ * @since 1.3
+ */
+ void set(String protocol, String host, int port,
+ String authority, String userInfo, String path,
+ String query, String ref) {
+ synchronized (this) {
+ this.protocol = protocol;
+ this.host = host;
+ this.port = port;
+ this.file = query == null ? path : path + "?" + query;
+ this.userInfo = userInfo;
+ this.path = path;
+ this.ref = ref;
+ /* This is very important. We must recompute this after the
+ * URL has been changed. */
+ hashCode = -1;
+ hostAddress = null;
+ this.query = query;
+ this.authority = authority;
+ }
+ }
+
+ /**
+ * Gets the query part of this {@code URL}.
+ *
+ * @return the query part of this {@code URL},
+ * or <CODE>null</CODE> if one does not exist
+ * @since 1.3
+ */
+ public String getQuery() {
+ return query;
+ }
+
+ /**
+ * Gets the path part of this {@code URL}.
+ *
+ * @return the path part of this {@code URL}, or an
+ * empty string if one does not exist
+ * @since 1.3
+ */
+ public String getPath() {
+ return path;
+ }
+
+ /**
+ * Gets the userInfo part of this {@code URL}.
+ *
+ * @return the userInfo part of this {@code URL}, or
+ * <CODE>null</CODE> if one does not exist
+ * @since 1.3
+ */
+ public String getUserInfo() {
+ return userInfo;
+ }
+
+ /**
+ * Gets the authority part of this {@code URL}.
+ *
+ * @return the authority part of this {@code URL}
+ * @since 1.3
+ */
+ public String getAuthority() {
+ return authority;
+ }
+
+ /**
+ * Gets the port number of this {@code URL}.
+ *
+ * @return the port number, or -1 if the port is not set
+ */
+ public int getPort() {
+ return port;
+ }
+
+ /**
+ * Gets the default port number of the protocol associated
+ * with this {@code URL}. If the URL scheme or the URLStreamHandler
+ * for the URL do not define a default port number,
+ * then -1 is returned.
+ *
+ * @return the port number
+ * @since 1.4
+ */
+ public int getDefaultPort() {
+ return handler.getDefaultPort();
+ }
+
+ /**
+ * Gets the protocol name of this {@code URL}.
+ *
+ * @return the protocol of this {@code URL}.
+ */
+ public String getProtocol() {
+ return protocol;
+ }
+
+ /**
+ * Gets the host name of this {@code URL}, if applicable.
+ * The format of the host conforms to RFC 2732, i.e. for a
+ * literal IPv6 address, this method will return the IPv6 address
+ * enclosed in square brackets ({@code '['} and {@code ']'}).
+ *
+ * @return the host name of this {@code URL}.
+ */
+ public String getHost() {
+ return host;
+ }
+
+ /**
+ * Gets the file name of this {@code URL}.
+ * The returned file portion will be
+ * the same as <CODE>getPath()</CODE>, plus the concatenation of
+ * the value of <CODE>getQuery()</CODE>, if any. If there is
+ * no query portion, this method and <CODE>getPath()</CODE> will
+ * return identical results.
+ *
+ * @return the file name of this {@code URL},
+ * or an empty string if one does not exist
+ */
+ public String getFile() {
+ return file;
+ }
+
+ /**
+ * Gets the anchor (also known as the "reference") of this
+ * {@code URL}.
+ *
+ * @return the anchor (also known as the "reference") of this
+ * {@code URL}, or <CODE>null</CODE> if one does not exist
+ */
+ public String getRef() {
+ return ref;
+ }
+
+ /**
+ * Compares this URL for equality with another object.<p>
+ *
+ * If the given object is not a URL then this method immediately returns
+ * {@code false}.<p>
+ *
+ * Two URL objects are equal if they have the same protocol, reference
+ * equivalent hosts, have the same port number on the host, and the same
+ * file and fragment of the file.<p>
+ *
+ * Two hosts are considered equivalent if both host names can be resolved
+ * into the same IP addresses; else if either host name can't be
+ * resolved, the host names must be equal without regard to case; or both
+ * host names equal to null.<p>
+ *
+ * Since hosts comparison requires name resolution, this operation is a
+ * blocking operation. <p>
+ *
+ * Note: The defined behavior for {@code equals} is known to
+ * be inconsistent with virtual hosting in HTTP.
+ *
+ * @param obj the URL to compare against.
+ * @return {@code true} if the objects are the same;
+ * {@code false} otherwise.
+ */
+ public boolean equals(Object obj) {
+ if (!(obj instanceof URL))
+ return false;
+ URL u2 = (URL)obj;
+
+ return handler.equals(this, u2);
+ }
+
+ /**
+ * Creates an integer suitable for hash table indexing.<p>
+ *
+ * The hash code is based upon all the URL components relevant for URL
+ * comparison. As such, this operation is a blocking operation.
+ *
+ * @return a hash code for this {@code URL}.
+ */
+ public synchronized int hashCode() {
+ if (hashCode != -1)
+ return hashCode;
+
+ hashCode = handler.hashCode(this);
+ return hashCode;
+ }
+
+ /**
+ * Compares two URLs, excluding the fragment component.<p>
+ *
+ * Returns {@code true} if this {@code URL} and the
+ * {@code other} argument are equal without taking the
+ * fragment component into consideration.
+ *
+ * @param other the {@code URL} to compare against.
+ * @return {@code true} if they reference the same remote object;
+ * {@code false} otherwise.
+ */
+ public boolean sameFile(URL other) {
+ return handler.sameFile(this, other);
+ }
+
+ /**
+ * Constructs a string representation of this {@code URL}. The
+ * string is created by calling the {@code toExternalForm}
+ * method of the stream protocol handler for this object.
+ *
+ * @return a string representation of this object.
+ * @see java.net.URL#URL(java.lang.String, java.lang.String, int,
+ * java.lang.String)
+ * @see java.net.URLStreamHandler#toExternalForm(java.net.URL)
+ */
+ public String toString() {
+ return toExternalForm();
+ }
+
+ /**
+ * Constructs a string representation of this {@code URL}. The
+ * string is created by calling the {@code toExternalForm}
+ * method of the stream protocol handler for this object.
+ *
+ * @return a string representation of this object.
+ * @see java.net.URL#URL(java.lang.String, java.lang.String,
+ * int, java.lang.String)
+ * @see java.net.URLStreamHandler#toExternalForm(java.net.URL)
+ */
+ public String toExternalForm() {
+ return handler.toExternalForm(this);
+ }
+
+ /**
+ * Returns a {@link java.net.URI} equivalent to this URL.
+ * This method functions in the same way as {@code new URI (this.toString())}.
+ * <p>Note, any URL instance that complies with RFC 2396 can be converted
+ * to a URI. However, some URLs that are not strictly in compliance
+ * can not be converted to a URI.
+ *
+ * @exception URISyntaxException if this URL is not formatted strictly according to
+ * to RFC2396 and cannot be converted to a URI.
+ *
+ * @return a URI instance equivalent to this URL.
+ * @since 1.5
+ */
+ public URI toURI() throws URISyntaxException {
+ return new URI (toString());
+ }
+
+ /**
+ * Returns a {@link java.net.URLConnection URLConnection} instance that
+ * represents a connection to the remote object referred to by the
+ * {@code URL}.
+ *
+ * <P>A new instance of {@linkplain java.net.URLConnection URLConnection} is
+ * created every time when invoking the
+ * {@linkplain java.net.URLStreamHandler#openConnection(URL)
+ * URLStreamHandler.openConnection(URL)} method of the protocol handler for
+ * this URL.</P>
+ *
+ * <P>It should be noted that a URLConnection instance does not establish
+ * the actual network connection on creation. This will happen only when
+ * calling {@linkplain java.net.URLConnection#connect() URLConnection.connect()}.</P>
+ *
+ * <P>If for the URL's protocol (such as HTTP or JAR), there
+ * exists a public, specialized URLConnection subclass belonging
+ * to one of the following packages or one of their subpackages:
+ * java.lang, java.io, java.util, java.net, the connection
+ * returned will be of that subclass. For example, for HTTP an
+ * HttpURLConnection will be returned, and for JAR a
+ * JarURLConnection will be returned.</P>
+ *
+ * @return a {@link java.net.URLConnection URLConnection} linking
+ * to the URL.
+ * @exception IOException if an I/O exception occurs.
+ * @see java.net.URL#URL(java.lang.String, java.lang.String,
+ * int, java.lang.String)
+ */
+ public URLConnection openConnection() throws java.io.IOException {
+ return handler.openConnection(this);
+ }
+
+ /**
+ * Same as {@link #openConnection()}, except that the connection will be
+ * made through the specified proxy; Protocol handlers that do not
+ * support proxing will ignore the proxy parameter and make a
+ * normal connection.
+ *
+ * Invoking this method preempts the system's default
+ * {@link java.net.ProxySelector ProxySelector} settings.
+ *
+ * @param proxy the Proxy through which this connection
+ * will be made. If direct connection is desired,
+ * Proxy.NO_PROXY should be specified.
+ * @return a {@code URLConnection} to the URL.
+ * @exception IOException if an I/O exception occurs.
+ * @exception SecurityException if a security manager is present
+ * and the caller doesn't have permission to connect
+ * to the proxy.
+ * @exception IllegalArgumentException will be thrown if proxy is null,
+ * or proxy has the wrong type
+ * @exception UnsupportedOperationException if the subclass that
+ * implements the protocol handler doesn't support
+ * this method.
+ * @see java.net.URL#URL(java.lang.String, java.lang.String,
+ * int, java.lang.String)
+ * @see java.net.URLConnection
+ * @see java.net.URLStreamHandler#openConnection(java.net.URL,
+ * java.net.Proxy)
+ * @since 1.5
+ */
+ public URLConnection openConnection(Proxy proxy)
+ throws java.io.IOException {
+ if (proxy == null) {
+ throw new IllegalArgumentException("proxy can not be null");
+ }
+
+ // Create a copy of Proxy as a security measure
+ Proxy p = proxy == Proxy.NO_PROXY ? Proxy.NO_PROXY : sun.net.ApplicationProxy.create(proxy);
+ SecurityManager sm = System.getSecurityManager();
+ if (p.type() != Proxy.Type.DIRECT && sm != null) {
+ InetSocketAddress epoint = (InetSocketAddress) p.address();
+ if (epoint.isUnresolved())
+ sm.checkConnect(epoint.getHostName(), epoint.getPort());
+ else
+ sm.checkConnect(epoint.getAddress().getHostAddress(),
+ epoint.getPort());
+ }
+ return handler.openConnection(this, p);
+ }
+
+ /**
+ * Opens a connection to this {@code URL} and returns an
+ * {@code InputStream} for reading from that connection. This
+ * method is a shorthand for:
+ * <blockquote><pre>
+ * openConnection().getInputStream()
+ * </pre></blockquote>
+ *
+ * @return an input stream for reading from the URL connection.
+ * @exception IOException if an I/O exception occurs.
+ * @see java.net.URL#openConnection()
+ * @see java.net.URLConnection#getInputStream()
+ */
+ public final InputStream openStream() throws java.io.IOException {
+ return openConnection().getInputStream();
+ }
+
+ /**
+ * Gets the contents of this URL. This method is a shorthand for:
+ * <blockquote><pre>
+ * openConnection().getContent()
+ * </pre></blockquote>
+ *
+ * @return the contents of this URL.
+ * @exception IOException if an I/O exception occurs.
+ * @see java.net.URLConnection#getContent()
+ */
+ public final Object getContent() throws java.io.IOException {
+ return openConnection().getContent();
+ }
+
+ /**
+ * Gets the contents of this URL. This method is a shorthand for:
+ * <blockquote><pre>
+ * openConnection().getContent(classes)
+ * </pre></blockquote>
+ *
+ * @param classes an array of Java types
+ * @return the content object of this URL that is the first match of
+ * the types specified in the classes array.
+ * null if none of the requested types are supported.
+ * @exception IOException if an I/O exception occurs.
+ * @see java.net.URLConnection#getContent(Class[])
+ * @since 1.3
+ */
+ public final Object getContent(Class<?>[] classes)
+ throws java.io.IOException {
+ return openConnection().getContent(classes);
+ }
+
+ /**
+ * The URLStreamHandler factory.
+ */
+ private static volatile URLStreamHandlerFactory factory;
+
+ /**
+ * Sets an application's {@code URLStreamHandlerFactory}.
+ * This method can be called at most once in a given Java Virtual
+ * Machine.
+ *
+ *<p> The {@code URLStreamHandlerFactory} instance is used to
+ *construct a stream protocol handler from a protocol name.
+ *
+ * <p> If there is a security manager, this method first calls
+ * the security manager's {@code checkSetFactory} method
+ * to ensure the operation is allowed.
+ * This could result in a SecurityException.
+ *
+ * @param fac the desired factory.
+ * @exception Error if the application has already set a factory.
+ * @exception SecurityException if a security manager exists and its
+ * {@code checkSetFactory} method doesn't allow
+ * the operation.
+ * @see java.net.URL#URL(java.lang.String, java.lang.String,
+ * int, java.lang.String)
+ * @see java.net.URLStreamHandlerFactory
+ * @see SecurityManager#checkSetFactory
+ */
+ public static void setURLStreamHandlerFactory(URLStreamHandlerFactory fac) {
+ synchronized (streamHandlerLock) {
+ if (factory != null) {
+ throw new Error("factory already defined");
+ }
+ SecurityManager security = System.getSecurityManager();
+ if (security != null) {
+ security.checkSetFactory();
+ }
+ handlers.clear();
+
+ // safe publication of URLStreamHandlerFactory with volatile write
+ factory = fac;
+ }
+ }
+
+ private static final URLStreamHandlerFactory defaultFactory = new DefaultFactory();
+
+ private static class DefaultFactory implements URLStreamHandlerFactory {
+ private static String PREFIX = "sun.net.www.protocol";
+
+ public URLStreamHandler createURLStreamHandler(String protocol) {
+ String name = PREFIX + "." + protocol + ".Handler";
+ try {
+ @SuppressWarnings("deprecation")
+ Object o = Class.forName(name).newInstance();
+ return (URLStreamHandler)o;
+ } catch (ClassNotFoundException x) {
+ // ignore
+ } catch (Exception e) {
+ // For compatibility, all Exceptions are ignored.
+ // any number of exceptions can get thrown here
+ }
+ return null;
+ }
+ }
+
+ private static URLStreamHandler lookupViaProperty(String protocol) {
+ String packagePrefixList =
+ GetPropertyAction.privilegedGetProperty(protocolPathProp);
+ if (packagePrefixList == null) {
+ // not set
+ return null;
+ }
+
+ String[] packagePrefixes = packagePrefixList.split("\\|");
+ URLStreamHandler handler = null;
+ for (int i=0; handler == null && i<packagePrefixes.length; i++) {
+ String packagePrefix = packagePrefixes[i].trim();
+ try {
+ String clsName = packagePrefix + "." + protocol + ".Handler";
+ Class<?> cls = null;
+ try {
+ cls = Class.forName(clsName);
+ } catch (ClassNotFoundException e) {
+ ClassLoader cl = ClassLoader.getSystemClassLoader();
+ if (cl != null) {
+ cls = cl.loadClass(clsName);
+ }
+ }
+ if (cls != null) {
+ @SuppressWarnings("deprecation")
+ Object tmp = cls.newInstance();
+ handler = (URLStreamHandler)tmp;
+ }
+ } catch (Exception e) {
+ // any number of exceptions can get thrown here
+ }
+ }
+ return handler;
+ }
+
+ private static Iterator<URLStreamHandlerProvider> providers() {
+ return new Iterator<>() {
+
+ ClassLoader cl = ClassLoader.getSystemClassLoader();
+ ServiceLoader<URLStreamHandlerProvider> sl =
+ ServiceLoader.load(URLStreamHandlerProvider.class, cl);
+ Iterator<URLStreamHandlerProvider> i = sl.iterator();
+
+ URLStreamHandlerProvider next = null;
+
+ private boolean getNext() {
+ while (next == null) {
+ try {
+ if (!i.hasNext())
+ return false;
+ next = i.next();
+ } catch (ServiceConfigurationError sce) {
+ if (sce.getCause() instanceof SecurityException) {
+ // Ignore security exceptions
+ continue;
+ }
+ throw sce;
+ }
+ }
+ return true;
+ }
+
+ public boolean hasNext() {
+ return getNext();
+ }
+
+ public URLStreamHandlerProvider next() {
+ if (!getNext())
+ throw new NoSuchElementException();
+ URLStreamHandlerProvider n = next;
+ next = null;
+ return n;
+ }
+ };
+ }
+
+ // Thread-local gate to prevent recursive provider lookups
+ private static ThreadLocal<Object> gate = new ThreadLocal<>();
+
+ private static URLStreamHandler lookupViaProviders(final String protocol) {
+ if (gate.get() != null)
+ throw new Error("Circular loading of URL stream handler providers detected");
+
+ gate.set(gate);
+ try {
+ return AccessController.doPrivileged(
+ new PrivilegedAction<>() {
+ public URLStreamHandler run() {
+ Iterator<URLStreamHandlerProvider> itr = providers();
+ while (itr.hasNext()) {
+ URLStreamHandlerProvider f = itr.next();
+ URLStreamHandler h = f.createURLStreamHandler(protocol);
+ if (h != null)
+ return h;
+ }
+ return null;
+ }
+ });
+ } finally {
+ gate.set(null);
+ }
+ }
+
+ /**
+ * Returns the protocol in lower case. Special cases known protocols
+ * to avoid loading locale classes during startup.
+ */
+ static String toLowerCase(String protocol) {
+ if (protocol.equals("jrt") || protocol.equals("file") || protocol.equals("jar")) {
+ return protocol;
+ } else {
+ return protocol.toLowerCase(Locale.ROOT);
+ }
+ }
+
+ /**
+ * Non-overrideable protocols: "jrt" and "file"
+ *
+ * Character-based comparison for performance reasons; also ensures
+ * case-insensitive comparison in a locale-independent fashion.
+ */
+ static boolean isOverrideable(String protocol) {
+ if (protocol.length() == 3) {
+ if ((Character.toLowerCase(protocol.charAt(0)) == 'j') &&
+ (Character.toLowerCase(protocol.charAt(1)) == 'r') &&
+ (Character.toLowerCase(protocol.charAt(2)) == 't')) {
+ return false;
+ }
+ } else if (protocol.length() == 4) {
+ if ((Character.toLowerCase(protocol.charAt(0)) == 'f') &&
+ (Character.toLowerCase(protocol.charAt(1)) == 'i') &&
+ (Character.toLowerCase(protocol.charAt(2)) == 'l') &&
+ (Character.toLowerCase(protocol.charAt(3)) == 'e')) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * A table of protocol handlers.
+ */
+ static Hashtable<String,URLStreamHandler> handlers = new Hashtable<>();
+ private static final Object streamHandlerLock = new Object();
+
+ /**
+ * Returns the Stream Handler.
+ * @param protocol the protocol to use
+ */
+ static URLStreamHandler getURLStreamHandler(String protocol) {
+
+ URLStreamHandler handler = handlers.get(protocol);
+
+ if (handler != null) {
+ return handler;
+ }
+
+ URLStreamHandlerFactory fac;
+ boolean checkedWithFactory = false;
+
+ if (isOverrideable(protocol) && jdk.internal.misc.VM.isBooted()) {
+ // Use the factory (if any). Volatile read makes
+ // URLStreamHandlerFactory appear fully initialized to current thread.
+ fac = factory;
+ if (fac != null) {
+ handler = fac.createURLStreamHandler(protocol);
+ checkedWithFactory = true;
+ }
+
+ if (handler == null && !protocol.equalsIgnoreCase("jar")) {
+ handler = lookupViaProviders(protocol);
+ }
+
+ if (handler == null) {
+ handler = lookupViaProperty(protocol);
+ }
+ }
+
+ synchronized (streamHandlerLock) {
+ if (handler == null) {
+ // Try the built-in protocol handler
+ handler = defaultFactory.createURLStreamHandler(protocol);
+ } else {
+ URLStreamHandler handler2 = null;
+
+ // Check again with hashtable just in case another
+ // thread created a handler since we last checked
+ handler2 = handlers.get(protocol);
+
+ if (handler2 != null) {
+ return handler2;
+ }
+
+ // Check with factory if another thread set a
+ // factory since our last check
+ if (!checkedWithFactory && (fac = factory) != null) {
+ handler2 = fac.createURLStreamHandler(protocol);
+ }
+
+ if (handler2 != null) {
+ // The handler from the factory must be given more
+ // importance. Discard the default handler that
+ // this thread created.
+ handler = handler2;
+ }
+ }
+
+ // Insert this handler into the hashtable
+ if (handler != null) {
+ handlers.put(protocol, handler);
+ }
+ }
+
+ return handler;
+ }
+
+ /**
+ * @serialField protocol String
+ *
+ * @serialField host String
+ *
+ * @serialField port int
+ *
+ * @serialField authority String
+ *
+ * @serialField file String
+ *
+ * @serialField ref String
+ *
+ * @serialField hashCode int
+ *
+ */
+ private static final ObjectStreamField[] serialPersistentFields = {
+ new ObjectStreamField("protocol", String.class),
+ new ObjectStreamField("host", String.class),
+ new ObjectStreamField("port", int.class),
+ new ObjectStreamField("authority", String.class),
+ new ObjectStreamField("file", String.class),
+ new ObjectStreamField("ref", String.class),
+ new ObjectStreamField("hashCode", int.class), };
+
+ /**
+ * WriteObject is called to save the state of the URL to an
+ * ObjectOutputStream. The handler is not saved since it is
+ * specific to this system.
+ *
+ * @serialData the default write object value. When read back in,
+ * the reader must ensure that calling getURLStreamHandler with
+ * the protocol variable returns a valid URLStreamHandler and
+ * throw an IOException if it does not.
+ */
+ private synchronized void writeObject(java.io.ObjectOutputStream s)
+ throws IOException
+ {
+ s.defaultWriteObject(); // write the fields
+ }
+
+ /**
+ * readObject is called to restore the state of the URL from the
+ * stream. It reads the components of the URL and finds the local
+ * stream handler.
+ */
+ private synchronized void readObject(java.io.ObjectInputStream s)
+ throws IOException, ClassNotFoundException {
+ GetField gf = s.readFields();
+ String protocol = (String)gf.get("protocol", null);
+ if (getURLStreamHandler(protocol) == null) {
+ throw new IOException("unknown protocol: " + protocol);
+ }
+ String host = (String)gf.get("host", null);
+ int port = gf.get("port", -1);
+ String authority = (String)gf.get("authority", null);
+ String file = (String)gf.get("file", null);
+ String ref = (String)gf.get("ref", null);
+ int hashCode = gf.get("hashCode", -1);
+ if (authority == null
+ && ((host != null && host.length() > 0) || port != -1)) {
+ if (host == null)
+ host = "";
+ authority = (port == -1) ? host : host + ":" + port;
+ }
+ tempState = new UrlDeserializedState(protocol, host, port, authority,
+ file, ref, hashCode);
+ }
+
+ /**
+ * Replaces the de-serialized object with an URL object.
+ *
+ * @return a newly created object from deserialized data
+ *
+ * @throws ObjectStreamException if a new object replacing this
+ * object could not be created
+ */
+
+ private Object readResolve() throws ObjectStreamException {
+
+ URLStreamHandler handler = null;
+ // already been checked in readObject
+ handler = getURLStreamHandler(tempState.getProtocol());
+
+ URL replacementURL = null;
+ if (isBuiltinStreamHandler(handler.getClass().getName())) {
+ replacementURL = fabricateNewURL();
+ } else {
+ replacementURL = setDeserializedFields(handler);
+ }
+ return replacementURL;
+ }
+
+ private URL setDeserializedFields(URLStreamHandler handler) {
+ URL replacementURL;
+ String userInfo = null;
+ String protocol = tempState.getProtocol();
+ String host = tempState.getHost();
+ int port = tempState.getPort();
+ String authority = tempState.getAuthority();
+ String file = tempState.getFile();
+ String ref = tempState.getRef();
+ int hashCode = tempState.getHashCode();
+
+
+ // Construct authority part
+ if (authority == null
+ && ((host != null && host.length() > 0) || port != -1)) {
+ if (host == null)
+ host = "";
+ authority = (port == -1) ? host : host + ":" + port;
+
+ // Handle hosts with userInfo in them
+ int at = host.lastIndexOf('@');
+ if (at != -1) {
+ userInfo = host.substring(0, at);
+ host = host.substring(at+1);
+ }
+ } else if (authority != null) {
+ // Construct user info part
+ int ind = authority.indexOf('@');
+ if (ind != -1)
+ userInfo = authority.substring(0, ind);
+ }
+
+ // Construct path and query part
+ String path = null;
+ String query = null;
+ if (file != null) {
+ // Fix: only do this if hierarchical?
+ int q = file.lastIndexOf('?');
+ if (q != -1) {
+ query = file.substring(q+1);
+ path = file.substring(0, q);
+ } else
+ path = file;
+ }
+
+ // Set the object fields.
+ this.protocol = protocol;
+ this.host = host;
+ this.port = port;
+ this.file = file;
+ this.authority = authority;
+ this.ref = ref;
+ this.hashCode = hashCode;
+ this.handler = handler;
+ this.query = query;
+ this.path = path;
+ this.userInfo = userInfo;
+ replacementURL = this;
+ return replacementURL;
+ }
+
+ private URL fabricateNewURL()
+ throws InvalidObjectException {
+ // create URL string from deserialized object
+ URL replacementURL = null;
+ String urlString = tempState.reconstituteUrlString();
+
+ try {
+ replacementURL = new URL(urlString);
+ } catch (MalformedURLException mEx) {
+ resetState();
+ InvalidObjectException invoEx = new InvalidObjectException(
+ "Malformed URL: " + urlString);
+ invoEx.initCause(mEx);
+ throw invoEx;
+ }
+ replacementURL.setSerializedHashCode(tempState.getHashCode());
+ resetState();
+ return replacementURL;
+ }
+
+ private boolean isBuiltinStreamHandler(String handlerClassName) {
+ return (handlerClassName.startsWith(BUILTIN_HANDLERS_PREFIX));
+ }
+
+ private void resetState() {
+ this.protocol = null;
+ this.host = null;
+ this.port = -1;
+ this.file = null;
+ this.authority = null;
+ this.ref = null;
+ this.hashCode = -1;
+ this.handler = null;
+ this.query = null;
+ this.path = null;
+ this.userInfo = null;
+ this.tempState = null;
+ }
+
+ private void setSerializedHashCode(int hc) {
+ this.hashCode = hc;
+ }
+
+ static {
+ SharedSecrets.setJavaNetURLAccess(
+ new JavaNetURLAccess() {
+ @Override
+ public URLStreamHandler getHandler(URL u) {
+ return u.handler;
+ }
+ }
+ );
+ }
+}
+
+final class UrlDeserializedState {
+ private final String protocol;
+ private final String host;
+ private final int port;
+ private final String authority;
+ private final String file;
+ private final String ref;
+ private final int hashCode;
+
+ public UrlDeserializedState(String protocol,
+ String host, int port,
+ String authority, String file,
+ String ref, int hashCode) {
+ this.protocol = protocol;
+ this.host = host;
+ this.port = port;
+ this.authority = authority;
+ this.file = file;
+ this.ref = ref;
+ this.hashCode = hashCode;
+ }
+
+ String getProtocol() {
+ return protocol;
+ }
+
+ String getHost() {
+ return host;
+ }
+
+ String getAuthority () {
+ return authority;
+ }
+
+ int getPort() {
+ return port;
+ }
+
+ String getFile () {
+ return file;
+ }
+
+ String getRef () {
+ return ref;
+ }
+
+ int getHashCode () {
+ return hashCode;
+ }
+
+ String reconstituteUrlString() {
+
+ // pre-compute length of StringBuffer
+ int len = protocol.length() + 1;
+ if (authority != null && authority.length() > 0)
+ len += 2 + authority.length();
+ if (file != null) {
+ len += file.length();
+ }
+ if (ref != null)
+ len += 1 + ref.length();
+ StringBuilder result = new StringBuilder(len);
+ result.append(protocol);
+ result.append(":");
+ if (authority != null && authority.length() > 0) {
+ result.append("//");
+ result.append(authority);
+ }
+ if (file != null) {
+ result.append(file);
+ }
+ if (ref != null) {
+ result.append("#");
+ result.append(ref);
+ }
+ return result.toString();
+ }
+}