32 import java.io.InputStream;
33 import java.security.AccessControlContext;
34 import java.security.AccessController;
35 import java.security.CodeSigner;
36 import java.security.CodeSource;
37 import java.security.Permission;
38 import java.security.PermissionCollection;
39 import java.security.PrivilegedAction;
40 import java.security.PrivilegedExceptionAction;
41 import java.security.SecureClassLoader;
42 import java.util.Enumeration;
43 import java.util.List;
44 import java.util.NoSuchElementException;
45 import java.util.Objects;
46 import java.util.Set;
47 import java.util.WeakHashMap;
48 import java.util.jar.Attributes;
49 import java.util.jar.Attributes.Name;
50 import java.util.jar.JarFile;
51 import java.util.jar.Manifest;
52 import sun.misc.Resource;
53 import sun.misc.URLClassPath;
54 import sun.net.www.ParseUtil;
55 import sun.security.util.SecurityConstants;
56
57 /**
58 * This class loader is used to load classes and resources from a search
59 * path of URLs referring to both JAR files and directories. Any URL that
60 * ends with a '/' is assumed to refer to a directory. Otherwise, the URL
61 * is assumed to refer to a JAR file which will be opened as needed.
62 * <p>
63 * The AccessControlContext of the thread that created the instance of
64 * URLClassLoader will be used when subsequently loading classes and
65 * resources.
66 * <p>
67 * The classes that are loaded are by default granted permission only to
68 * access the URLs specified when the URLClassLoader was created.
69 *
70 * @author David Connelly
71 * @since 1.2
752 * loading the class.
753 *
754 * @param urls the URLs to search for classes and resources
755 * @exception NullPointerException if {@code urls} is {@code null}.
756 * @return the resulting class loader
757 */
758 public static URLClassLoader newInstance(final URL[] urls) {
759 // Save the caller's context
760 final AccessControlContext acc = AccessController.getContext();
761 // Need a privileged block to create the class loader
762 URLClassLoader ucl = AccessController.doPrivileged(
763 new PrivilegedAction<>() {
764 public URLClassLoader run() {
765 return new FactoryURLClassLoader(urls, acc);
766 }
767 });
768 return ucl;
769 }
770
771 static {
772 sun.misc.SharedSecrets.setJavaNetAccess (
773 new sun.misc.JavaNetAccess() {
774 public URLClassPath getURLClassPath (URLClassLoader u) {
775 return u.ucp;
776 }
777 }
778 );
779 ClassLoader.registerAsParallelCapable();
780 }
781 }
782
783 final class FactoryURLClassLoader extends URLClassLoader {
784
785 static {
786 ClassLoader.registerAsParallelCapable();
787 }
788
789 FactoryURLClassLoader(URL[] urls, ClassLoader parent,
790 AccessControlContext acc) {
791 super(urls, parent, acc);
792 }
793
794 FactoryURLClassLoader(URL[] urls, AccessControlContext acc) {
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32 import java.io.InputStream;
33 import java.security.AccessControlContext;
34 import java.security.AccessController;
35 import java.security.CodeSigner;
36 import java.security.CodeSource;
37 import java.security.Permission;
38 import java.security.PermissionCollection;
39 import java.security.PrivilegedAction;
40 import java.security.PrivilegedExceptionAction;
41 import java.security.SecureClassLoader;
42 import java.util.Enumeration;
43 import java.util.List;
44 import java.util.NoSuchElementException;
45 import java.util.Objects;
46 import java.util.Set;
47 import java.util.WeakHashMap;
48 import java.util.jar.Attributes;
49 import java.util.jar.Attributes.Name;
50 import java.util.jar.JarFile;
51 import java.util.jar.Manifest;
52
53 import jdk.internal.misc.JavaNetAccess;
54 import jdk.internal.misc.SharedSecrets;
55 import sun.misc.Resource;
56 import sun.misc.URLClassPath;
57 import sun.net.www.ParseUtil;
58 import sun.security.util.SecurityConstants;
59
60 /**
61 * This class loader is used to load classes and resources from a search
62 * path of URLs referring to both JAR files and directories. Any URL that
63 * ends with a '/' is assumed to refer to a directory. Otherwise, the URL
64 * is assumed to refer to a JAR file which will be opened as needed.
65 * <p>
66 * The AccessControlContext of the thread that created the instance of
67 * URLClassLoader will be used when subsequently loading classes and
68 * resources.
69 * <p>
70 * The classes that are loaded are by default granted permission only to
71 * access the URLs specified when the URLClassLoader was created.
72 *
73 * @author David Connelly
74 * @since 1.2
755 * loading the class.
756 *
757 * @param urls the URLs to search for classes and resources
758 * @exception NullPointerException if {@code urls} is {@code null}.
759 * @return the resulting class loader
760 */
761 public static URLClassLoader newInstance(final URL[] urls) {
762 // Save the caller's context
763 final AccessControlContext acc = AccessController.getContext();
764 // Need a privileged block to create the class loader
765 URLClassLoader ucl = AccessController.doPrivileged(
766 new PrivilegedAction<>() {
767 public URLClassLoader run() {
768 return new FactoryURLClassLoader(urls, acc);
769 }
770 });
771 return ucl;
772 }
773
774 static {
775 SharedSecrets.setJavaNetAccess(
776 new JavaNetAccess() {
777 public URLClassPath getURLClassPath(URLClassLoader u) {
778 return u.ucp;
779 }
780 }
781 );
782 ClassLoader.registerAsParallelCapable();
783 }
784 }
785
786 final class FactoryURLClassLoader extends URLClassLoader {
787
788 static {
789 ClassLoader.registerAsParallelCapable();
790 }
791
792 FactoryURLClassLoader(URL[] urls, ClassLoader parent,
793 AccessControlContext acc) {
794 super(urls, parent, acc);
795 }
796
797 FactoryURLClassLoader(URL[] urls, AccessControlContext acc) {
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