From 07b78716af6a9d7c9fd1e94d9baf94a52c873947 Mon Sep 17 00:00:00 2001 From: Andrew Haley Date: Fri, 30 Sep 2016 16:24:48 +0000 Subject: Makefile.def: Remove libjava. 2016-09-30 Andrew Haley * Makefile.def: Remove libjava. * Makefile.tpl: Likewise. * Makefile.in: Regenerate. * configure.ac: Likewise. * configure: Likewise. * gcc/java: Remove. * libjava: Likewise. From-SVN: r240662 --- libjava/classpath/java/net/URLClassLoader.java | 860 ------------------------- 1 file changed, 860 deletions(-) delete mode 100644 libjava/classpath/java/net/URLClassLoader.java (limited to 'libjava/classpath/java/net/URLClassLoader.java') diff --git a/libjava/classpath/java/net/URLClassLoader.java b/libjava/classpath/java/net/URLClassLoader.java deleted file mode 100644 index 418ee77f358..00000000000 --- a/libjava/classpath/java/net/URLClassLoader.java +++ /dev/null @@ -1,860 +0,0 @@ -/* URLClassLoader.java -- ClassLoader that loads classes from one or more URLs - Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 - Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath 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 for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package java.net; - -import gnu.java.lang.CPStringBuilder; - -import gnu.java.net.loader.FileURLLoader; -import gnu.java.net.loader.JarURLLoader; -import gnu.java.net.loader.RemoteURLLoader; -import gnu.java.net.loader.Resource; -import gnu.java.net.loader.URLLoader; -import gnu.java.net.loader.URLStreamHandlerCache; - -import java.io.ByteArrayOutputStream; -import java.io.EOFException; -import java.io.File; -import java.io.FilePermission; -import java.io.IOException; -import java.io.InputStream; -import java.lang.reflect.Constructor; -import java.lang.reflect.InvocationTargetException; -import java.security.AccessControlContext; -import java.security.AccessController; -import java.security.CodeSource; -import java.security.PermissionCollection; -import java.security.PrivilegedAction; -import java.security.SecureClassLoader; -import java.security.cert.Certificate; -import java.util.ArrayList; -import java.util.Enumeration; -import java.util.Vector; -import java.util.jar.Attributes; -import java.util.jar.Manifest; - - -/** - * A secure class loader that can load classes and resources from - * multiple locations. Given an array of URLs this class - * loader will retrieve classes and resources by fetching them from - * possible remote locations. Each URL is searched in - * order in which it was added. If the file portion of the - * URL ends with a '/' character then it is interpreted - * as a base directory, otherwise it is interpreted as a jar file from - * which the classes/resources are resolved. - * - *

New instances can be created by two static - * newInstance() methods or by three public - * contructors. Both ways give the option to supply an initial array - * of URLs and (optionally) a parent classloader (that is - * different from the standard system class loader).

- * - *

Normally creating a URLClassLoader throws a - * SecurityException if a SecurityManager is - * installed and the checkCreateClassLoader() method does - * not return true. But the newInstance() methods may be - * used by any code as long as it has permission to acces the given - * URLs. URLClassLoaders created by the - * newInstance() methods also explicitly call the - * checkPackageAccess() method of - * SecurityManager if one is installed before trying to - * load a class. Note that only subclasses of - * URLClassLoader can add new URLs after the - * URLClassLoader had been created. But it is always possible to get - * an array of all URLs that the class loader uses to resolve classes - * and resources by way of the getURLs() method.

- * - *

Open issues: - *

- *

- * - * @since 1.2 - * - * @author Mark Wielaard (mark@klomp.org) - * @author Wu Gansha (gansha.wu@intel.com) - */ -public class URLClassLoader extends SecureClassLoader -{ - // Class Variables - - /** - * A cache to store mappings between handler factory and its - * private protocol handler cache (also a HashMap), so we can avoid - * creating handlers each time the same protocol comes. - */ - private static URLStreamHandlerCache factoryCache - = new URLStreamHandlerCache(); - - /** - * The prefix for URL loaders. - */ - private static final String URL_LOADER_PREFIX = "gnu.java.net.loader.Load_"; - - // Instance variables - - /** Locations to load classes from */ - private final Vector urls = new Vector(); - - /** - * Store pre-parsed information for each url into this vector: each - * element is a URL loader. A jar file has its own class-path - * attribute which adds to the URLs that will be searched, but this - * does not add to the list of urls. - */ - private final Vector urlinfos = new Vector(); - - /** Factory used to get the protocol handlers of the URLs */ - private final URLStreamHandlerFactory factory; - - /** - * The security context when created from newInstance() - * or null when created through a normal constructor or when no - * SecurityManager was installed. - */ - private final AccessControlContext securityContext; - - // Helper classes - - /** - * Creates a URLClassLoader that gets classes from the supplied URLs. - * To determine if this classloader may be created the constructor of - * the super class (SecureClassLoader) is called first, which - * can throw a SecurityException. Then the supplied URLs are added - * in the order given to the URLClassLoader which uses these URLs to - * load classes and resources (after using the default parent ClassLoader). - * - * @param urls Locations that should be searched by this ClassLoader when - * resolving Classes or Resources. - * @exception SecurityException if the SecurityManager disallows the - * creation of a ClassLoader. - * @see SecureClassLoader - */ - public URLClassLoader(URL[] urls) throws SecurityException - { - super(); - this.factory = null; - this.securityContext = null; - addURLs(urls); - } - - /** - * Creates a URLClassLoader that gets classes from the supplied - * URLs. - * To determine if this classloader may be created the constructor of - * the super class (SecureClassLoader) is called first, which - * can throw a SecurityException. Then the supplied URLs are added - * in the order given to the URLClassLoader which uses these URLs to - * load classes and resources (after using the supplied parent ClassLoader). - * @param urls Locations that should be searched by this ClassLoader when - * resolving Classes or Resources. - * @param parent The parent class loader used before trying this class - * loader. - * @exception SecurityException if the SecurityManager disallows the - * creation of a ClassLoader. - * @exception SecurityException - * @see SecureClassLoader - */ - public URLClassLoader(URL[] urls, ClassLoader parent) - throws SecurityException - { - super(parent); - this.factory = null; - this.securityContext = null; - addURLs(urls); - } - - // Package-private to avoid a trampoline constructor. - /** - * Package-private constructor used by the static - * newInstance(URL[]) method. Creates an - * URLClassLoader with the given parent but without any - * URLs yet. This is used to bypass the normal security - * check for creating classloaders, but remembers the security - * context which will be used when defining classes. The - * URLs to load from must be added by the - * newInstance() method in the security context of the - * caller. - * - * @param securityContext the security context of the unprivileged code. - */ - URLClassLoader(ClassLoader parent, AccessControlContext securityContext) - { - super(parent); - this.factory = null; - this.securityContext = securityContext; - } - - /** - * Creates a URLClassLoader that gets classes from the supplied URLs. - * To determine if this classloader may be created the constructor of - * the super class (SecureClassLoader) is called first, which - * can throw a SecurityException. Then the supplied URLs are added - * in the order given to the URLClassLoader which uses these URLs to - * load classes and resources (after using the supplied parent ClassLoader). - * It will use the supplied URLStreamHandlerFactory to get the - * protocol handlers of the supplied URLs. - * @param urls Locations that should be searched by this ClassLoader when - * resolving Classes or Resources. - * @param parent The parent class loader used before trying this class - * loader. - * @param factory Used to get the protocol handler for the URLs. - * @exception SecurityException if the SecurityManager disallows the - * creation of a ClassLoader. - * @exception SecurityException - * @see SecureClassLoader - */ - public URLClassLoader(URL[] urls, ClassLoader parent, - URLStreamHandlerFactory factory) - throws SecurityException - { - super(parent); - this.securityContext = null; - this.factory = factory; - // If this factory is not yet in factoryCache, add it. - factoryCache.add(factory); - addURLs(urls); - } - - // Methods - - /** - * Adds a new location to the end of the internal URL store. - * @param newUrl the location to add - */ - protected void addURL(URL newUrl) - { - urls.add(newUrl); - addURLImpl(newUrl); - } - - private void addURLImpl(URL newUrl) - { - synchronized (this) - { - if (newUrl == null) - return; // Silently ignore... - - // Reset the toString() value. - thisString = null; - - // Create a loader for this URL. - URLLoader loader = null; - String file = newUrl.getFile(); - String protocol = newUrl.getProtocol(); - - // If we have a file: URL, we want to make it absolute - // here, before we decide whether it is really a jar. - URL absoluteURL; - if ("file".equals (protocol)) - { - File dir = new File(file); - try - { - absoluteURL = dir.getCanonicalFile().toURL(); - } - catch (IOException ignore) - { - try - { - absoluteURL = dir.getAbsoluteFile().toURL(); - } - catch (MalformedURLException _) - { - // This really should not happen. - absoluteURL = newUrl; - } - } - } - else - { - // This doesn't hurt, and it simplifies the logic a - // little. - absoluteURL = newUrl; - } - - // First see if we can find a handler with the correct name. - try - { - Class handler = Class.forName(URL_LOADER_PREFIX + protocol); - Class[] argTypes = new Class[] { URLClassLoader.class, - URLStreamHandlerCache.class, - URLStreamHandlerFactory.class, - URL.class, - URL.class }; - Constructor k = handler.getDeclaredConstructor(argTypes); - loader - = (URLLoader) k.newInstance(new Object[] { this, - factoryCache, - factory, - newUrl, - absoluteURL }); - } - catch (ClassNotFoundException ignore) - { - // Fall through. - } - catch (NoSuchMethodException nsme) - { - // Programming error in the class library. - InternalError vme - = new InternalError("couldn't find URLLoader constructor"); - vme.initCause(nsme); - throw vme; - } - catch (InstantiationException inste) - { - // Programming error in the class library. - InternalError vme - = new InternalError("couldn't instantiate URLLoader"); - vme.initCause(inste); - throw vme; - } - catch (InvocationTargetException ite) - { - // Programming error in the class library. - InternalError vme - = new InternalError("error instantiating URLLoader"); - vme.initCause(ite); - throw vme; - } - catch (IllegalAccessException illae) - { - // Programming error in the class library. - InternalError vme - = new InternalError("invalid access to URLLoader"); - vme.initCause(illae); - throw vme; - } - - if (loader == null) - { - // If it is not a directory, use the jar loader. - if (! (file.endsWith("/") || file.endsWith(File.separator))) - loader = new JarURLLoader(this, factoryCache, factory, - newUrl, absoluteURL); - else if ("file".equals(protocol)) - loader = new FileURLLoader(this, factoryCache, factory, - newUrl, absoluteURL); - else - loader = new RemoteURLLoader(this, factoryCache, factory, - newUrl); - } - - urlinfos.add(loader); - ArrayList extra = loader.getClassPath(); - if (extra != null) - urlinfos.addAll(extra); - } - } - - /** - * Adds an array of new locations to the end of the internal URL - * store. Called from the the constructors. Should not call to the - * protected addURL() method since that can be overridden and - * subclasses are not yet in a good state at this point. - * jboss 4.0.3 for example depends on this. - * - * @param newUrls the locations to add - */ - private void addURLs(URL[] newUrls) - { - for (int i = 0; i < newUrls.length; i++) - { - urls.add(newUrls[i]); - addURLImpl(newUrls[i]); - } - } - - /** - * Look in both Attributes for a given value. The first Attributes - * object, if not null, has precedence. - */ - private String getAttributeValue(Attributes.Name name, Attributes first, - Attributes second) - { - String result = null; - if (first != null) - result = first.getValue(name); - if (result == null) - result = second.getValue(name); - return result; - } - - /** - * Defines a Package based on the given name and the supplied manifest - * information. The manifest indicates the title, version and - * vendor information of the specification and implementation and whether the - * package is sealed. If the Manifest indicates that the package is sealed - * then the Package will be sealed with respect to the supplied URL. - * - * @param name The name of the package - * @param manifest The manifest describing the specification, - * implementation and sealing details of the package - * @param url the code source url to seal the package - * @return the defined Package - * @throws IllegalArgumentException If this package name already exists - * in this class loader - */ - protected Package definePackage(String name, Manifest manifest, URL url) - throws IllegalArgumentException - { - // Compute the name of the package as it may appear in the - // Manifest. - CPStringBuilder xform = new CPStringBuilder(name); - for (int i = xform.length () - 1; i >= 0; --i) - if (xform.charAt(i) == '.') - xform.setCharAt(i, '/'); - xform.append('/'); - String xformName = xform.toString(); - - Attributes entryAttr = manifest.getAttributes(xformName); - Attributes attr = manifest.getMainAttributes(); - - String specTitle - = getAttributeValue(Attributes.Name.SPECIFICATION_TITLE, - entryAttr, attr); - String specVersion - = getAttributeValue(Attributes.Name.SPECIFICATION_VERSION, - entryAttr, attr); - String specVendor - = getAttributeValue(Attributes.Name.SPECIFICATION_VENDOR, - entryAttr, attr); - String implTitle - = getAttributeValue(Attributes.Name.IMPLEMENTATION_TITLE, - entryAttr, attr); - String implVersion - = getAttributeValue(Attributes.Name.IMPLEMENTATION_VERSION, - entryAttr, attr); - String implVendor - = getAttributeValue(Attributes.Name.IMPLEMENTATION_VENDOR, - entryAttr, attr); - - // Look if the Manifest indicates that this package is sealed - // XXX - most likely not completely correct! - // Shouldn't we also check the sealed attribute of the complete jar? - // http://java.sun.com/products/jdk/1.4/docs/guide/extensions/spec.html#bundled - // But how do we get that jar manifest here? - String sealed = attr.getValue(Attributes.Name.SEALED); - if ("false".equals(sealed)) - // make sure that the URL is null so the package is not sealed - url = null; - - return definePackage(name, - specTitle, specVendor, specVersion, - implTitle, implVendor, implVersion, - url); - } - - /** - * Finds (the first) class by name from one of the locations. The locations - * are searched in the order they were added to the URLClassLoader. - * - * @param className the classname to find - * @exception ClassNotFoundException when the class could not be found or - * loaded - * @return a Class object representing the found class - */ - protected Class findClass(final String className) - throws ClassNotFoundException - { - // Just try to find the resource by the (almost) same name - String resourceName = className.replace('.', '/') + ".class"; - int max = urlinfos.size(); - Resource resource = null; - for (int i = 0; i < max && resource == null; i++) - { - URLLoader loader = (URLLoader)urlinfos.elementAt(i); - if (loader == null) - continue; - - Class k = loader.getClass(className); - if (k != null) - return k; - - resource = loader.getResource(resourceName); - } - if (resource == null) - throw new ClassNotFoundException(className + " not found in " + this); - - // Try to read the class data, create the CodeSource, Package and - // construct the class (and watch out for those nasty IOExceptions) - try - { - byte[] data; - InputStream in = resource.getInputStream(); - try - { - int length = resource.getLength(); - if (length != -1) - { - // We know the length of the data. - // Just try to read it in all at once - data = new byte[length]; - int pos = 0; - while (length - pos > 0) - { - int len = in.read(data, pos, length - pos); - if (len == -1) - throw new EOFException("Not enough data reading from: " - + in); - pos += len; - } - } - else - { - // We don't know the data length. - // Have to read it in chunks. - ByteArrayOutputStream out = new ByteArrayOutputStream(4096); - byte[] b = new byte[4096]; - int l = 0; - while (l != -1) - { - l = in.read(b); - if (l != -1) - out.write(b, 0, l); - } - data = out.toByteArray(); - } - } - finally - { - in.close(); - } - final byte[] classData = data; - - // Now get the CodeSource - final CodeSource source = resource.getCodeSource(); - - // Find out package name - String packageName = null; - int lastDot = className.lastIndexOf('.'); - if (lastDot != -1) - packageName = className.substring(0, lastDot); - - if (packageName != null && getPackage(packageName) == null) - { - // define the package - Manifest manifest = resource.getLoader().getManifest(); - if (manifest == null) - definePackage(packageName, null, null, null, null, null, null, - null); - else - definePackage(packageName, manifest, - resource.getLoader().getBaseURL()); - } - - // And finally construct the class! - SecurityManager sm = System.getSecurityManager(); - Class result = null; - if (sm != null && securityContext != null) - { - result = AccessController.doPrivileged - (new PrivilegedAction() - { - public Class run() - { - return defineClass(className, classData, - 0, classData.length, - source); - } - }, securityContext); - } - else - result = defineClass(className, classData, 0, classData.length, source); - - // Avoid NullPointerExceptions. - Certificate[] resourceCertificates = resource.getCertificates(); - if(resourceCertificates != null) - super.setSigners(result, resourceCertificates); - - return result; - } - catch (IOException ioe) - { - throw new ClassNotFoundException(className + " not found in " + this, ioe); - } - } - - // Cached String representation of this URLClassLoader - private String thisString; - - /** - * Returns a String representation of this URLClassLoader giving the - * actual Class name, the URLs that are searched and the parent - * ClassLoader. - */ - public String toString() - { - synchronized (this) - { - if (thisString == null) - { - CPStringBuilder sb = new CPStringBuilder(); - sb.append(this.getClass().getName()); - sb.append("{urls=[" ); - URL[] thisURLs = getURLs(); - for (int i = 0; i < thisURLs.length; i++) - { - sb.append(thisURLs[i]); - if (i < thisURLs.length - 1) - sb.append(','); - } - sb.append(']'); - sb.append(", parent="); - sb.append(getParent()); - sb.append('}'); - thisString = sb.toString(); - } - return thisString; - } - } - - /** - * Finds the first occurrence of a resource that can be found. The locations - * are searched in the order they were added to the URLClassLoader. - * - * @param resourceName the resource name to look for - * @return the URLResource for the resource if found, null otherwise - */ - private Resource findURLResource(String resourceName) - { - int max = urlinfos.size(); - for (int i = 0; i < max; i++) - { - URLLoader loader = (URLLoader) urlinfos.elementAt(i); - if (loader == null) - continue; - - Resource resource = loader.getResource(resourceName); - if (resource != null) - return resource; - } - return null; - } - - /** - * Finds the first occurrence of a resource that can be found. - * - * @param resourceName the resource name to look for - * @return the URL if found, null otherwise - */ - public URL findResource(String resourceName) - { - Resource resource = findURLResource(resourceName); - if (resource != null) - return resource.getURL(); - - // Resource not found - return null; - } - - /** - * Finds all the resources with a particular name from all the locations. - * - * @param resourceName the name of the resource to lookup - * @return a (possible empty) enumeration of URLs where the resource can be - * found - * @exception IOException when an error occurs accessing one of the - * locations - */ - public Enumeration findResources(String resourceName) - throws IOException - { - Vector resources = new Vector(); - int max = urlinfos.size(); - for (int i = 0; i < max; i++) - { - URLLoader loader = (URLLoader) urlinfos.elementAt(i); - Resource resource = loader.getResource(resourceName); - if (resource != null) - resources.add(resource.getURL()); - } - return resources.elements(); - } - - /** - * Returns the permissions needed to access a particular code - * source. These permissions includes those returned by - * SecureClassLoader.getPermissions() and the actual - * permissions to access the objects referenced by the URL of the - * code source. The extra permissions added depend on the protocol - * and file portion of the URL in the code source. If the URL has - * the "file" protocol ends with a '/' character then it must be a - * directory and a file Permission to read everything in that - * directory and all subdirectories is added. If the URL had the - * "file" protocol and doesn't end with a '/' character then it must - * be a normal file and a file permission to read that file is - * added. If the URL has any other protocol then a - * socket permission to connect and accept connections from the host - * portion of the URL is added. - * - * @param source The codesource that needs the permissions to be accessed - * @return the collection of permissions needed to access the code resource - * @see java.security.SecureClassLoader#getPermissions(CodeSource) - */ - protected PermissionCollection getPermissions(CodeSource source) - { - // XXX - This implementation does exactly as the Javadoc describes. - // But maybe we should/could use URLConnection.getPermissions()? - // First get the permissions that would normally be granted - PermissionCollection permissions = super.getPermissions(source); - - // Now add any extra permissions depending on the URL location. - URL url = source.getLocation(); - String protocol = url.getProtocol(); - if (protocol.equals("file")) - { - String file = url.getFile(); - - // If the file end in / it must be an directory. - if (file.endsWith("/") || file.endsWith(File.separator)) - { - // Grant permission to read everything in that directory and - // all subdirectories. - permissions.add(new FilePermission(file + "-", "read")); - } - else - { - // It is a 'normal' file. - // Grant permission to access that file. - permissions.add(new FilePermission(file, "read")); - } - } - else - { - // Grant permission to connect to and accept connections from host - String host = url.getHost(); - if (host != null) - permissions.add(new SocketPermission(host, "connect,accept")); - } - - return permissions; - } - - /** - * Returns all the locations that this class loader currently uses the - * resolve classes and resource. This includes both the initially supplied - * URLs as any URLs added later by the loader. - * @return All the currently used URLs - */ - public URL[] getURLs() - { - return (URL[]) urls.toArray(new URL[urls.size()]); - } - - /** - * Creates a new instance of a URLClassLoader that gets - * classes from the supplied URLs. This class loader - * will have as parent the standard system class loader. - * - * @param urls the initial URLs used to resolve classes and - * resources - * - * @return the class loader - * - * @exception SecurityException when the calling code does not have - * permission to access the given URLs - */ - public static URLClassLoader newInstance(URL[] urls) - throws SecurityException - { - return newInstance(urls, null); - } - - /** - * Creates a new instance of a URLClassLoader that gets - * classes from the supplied URLs and with the supplied - * loader as parent class loader. - * - * @param urls the initial URLs used to resolve classes and - * resources - * @param parent the parent class loader - * - * @return the class loader - * - * @exception SecurityException when the calling code does not have - * permission to access the given URLs - */ - public static URLClassLoader newInstance(URL[] urls, final ClassLoader parent) - throws SecurityException - { - SecurityManager sm = System.getSecurityManager(); - if (sm == null) - return new URLClassLoader(urls, parent); - else - { - final Object securityContext = sm.getSecurityContext(); - - // XXX - What to do with anything else then an AccessControlContext? - if (! (securityContext instanceof AccessControlContext)) - throw new SecurityException("securityContext must be AccessControlContext: " - + securityContext); - - URLClassLoader loader = - AccessController.doPrivileged(new PrivilegedAction() - { - public URLClassLoader run() - { - return new URLClassLoader(parent, - (AccessControlContext) securityContext); - } - }); - loader.addURLs(urls); - return loader; - } - } -} -- cgit v1.2.3