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author | Bryce McKinlay <bryce@gcc.gnu.org> | 2001-04-25 16:45:15 +0100 |
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committer | Bryce McKinlay <bryce@gcc.gnu.org> | 2001-04-25 16:45:15 +0100 |
commit | 28f7d9d05ad70afad626d4bc54c633d31eb7430a (patch) | |
tree | e9e280e2d95c4a16d714ee23d9f0345ef0401260 /libjava/java/security/Permissions.java | |
parent | 744cfa53c3f98a0cb0d952a176c8bc03aee1abba (diff) | |
download | gcc-28f7d9d05ad70afad626d4bc54c633d31eb7430a.zip gcc-28f7d9d05ad70afad626d4bc54c633d31eb7430a.tar.gz gcc-28f7d9d05ad70afad626d4bc54c633d31eb7430a.tar.bz2 |
decl.c (init_decl_processing): Add new class "protectionDomain" field.
gcc/java:
2001-04-25 Bryce McKinlay <bryce@waitaki.otago.ac.nz>
* decl.c (init_decl_processing): Add new class "protectionDomain"
field.
* class.c (make_class_data): Set initial value for "protectionDomain".
libjava:
2001-04-25 Bryce McKinlay <bryce@albatross.co.nz>
java.security merge and ClassLoader compliance fixes.
* java/lang/Class.h (Class): Include ProtectionDomain.h.
New protectionDomain field.
(forName): Add initialize parameter. Fixes declaration to comply with
JDK spec.
* java/lang/natClass.cc (forName): Correct declaration of the three-arg
variant. Honour "initialize" flag.
(getProtectionDomain0): New method.
* java/lang/Class.java: Fix forName() declaration.
(getPackage): New method based on Classpath implementation.
(getProtectionDomain0): New native method decl.
(getProtectionDomain): New method.
* java/lang/ClassLoader.java (getParent): Now final.
(definedPackages): New field.
(getPackage): New.
(defineClass): New variant with protectionDomain argument.
(definePackage): New.
(getPackages): New.
(findSystemClass): Now final.
(getSystemResourceAsStream): Remove redundant "final" modifier.
(getSystemResource): Remove redundant "final" modifier.
(getResources): Now final.
(protectionDomainPermission): New static field.
(unknownProtectionDomain): Ditto.
(defaultProtectionDomain): Ditto.
(getSystemClassLoader): Now non-native.
* java/util/ResourceBundle.java (tryGetSomeBundle): Use the correct
arguments for Class.forName().
* java/lang/Package.java: New file.
* gnu/gcj/runtime/VMClassLoader.java (getVMClassLoader): Removed.
(instance): Static initialize singleton.
(findClass): Override this, not findSystemClass.
* java/lang/natClassLoader.cc (defineClass0): Set class's
protectionDomain field as specified.
(getSystemClassLoader): Removed.
(findClass): Renamed from findSystemClass. Call the interpreter via
URLClassLoader.findClass if loading class via dlopen fails.
* java/security/*.java: java.security import/merge with Classpath.
* java/security/acl/*.java: Likewise.
* java/security/interfaces/*.java: Likewise.
* java/security/spec/*.java: Likewise.
* java/net/NetPermission.java: Likewise.
* java/net/SocketPermission.java: Likewise.
* gnu/java/security/provider/DefaultPolicy.java: Likewise.
* Makefile.am: Add new classes.
* Makefile.in: Rebuilt.
* gcj/javaprims.h: CNI namespace rebuild.
From-SVN: r41543
Diffstat (limited to 'libjava/java/security/Permissions.java')
-rw-r--r-- | libjava/java/security/Permissions.java | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/libjava/java/security/Permissions.java b/libjava/java/security/Permissions.java new file mode 100644 index 0000000..44bc3d3 --- /dev/null +++ b/libjava/java/security/Permissions.java @@ -0,0 +1,257 @@ +/* Permissions.java -- A collection of permission collections + Copyright (C) 1998 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., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + +package java.security; + +import java.io.Serializable; +import java.util.Hashtable; +import java.util.Enumeration; +import java.util.NoSuchElementException; + +/** + * This class is a heterogeneous collection of permissions. It is + * organized as a collection of <code>PermissionCollection</code>'s stored + * in a hashtable. Each individual <code>PermissionCollection</code> + * contains permissions of a single type. If a specific type of + * <code>Permission</code> does not provide a collection type to use + * via its <code>newPermissionCollection</code> method, then a default + * collection type which stores its permissions in a hash table will be + * used. + * + * @version 0.0 + * + * @author Aaron M. Renn (arenn@urbanophile.com) + */ +public class Permissions extends PermissionCollection implements Serializable +{ + /** + * Holds instances of <code>AllPermission</code>. + */ + private PermissionCollection allPermission; + + /** + * This is the <code>Hashtable</code> that contains our collections. + */ + Hashtable perms = new Hashtable(); + + /** + * This method initializes a new instance of <code>Permissions</code>. + */ + public Permissions() + { + } + + /** + * This method adds a new <code>Permission</code> to this collection. It + * will be stored in a <code>PermissionCollection</code> of the appropriate + * type, as determined by calling <code>newPermissionCollection</code> on + * the specified permission (if an appropriate collection does not already + * exist). If this object does not specify a particular type of collection, + * a default collection which stores in permissions in a hash table will + * be used. + * + * @param perm The <code>Permission</code> object to be added to this collection. + * + * @exception SecurityException If this collection is marked as read only. + * @exception IllegalArgumentException If the specified <code>Permission</code> cannot be added to this collection + */ + public void add(Permission perm) + throws SecurityException, IllegalArgumentException + { + if (isReadOnly()) + throw new SecurityException("PermissionCollection is read only"); + + if (perm instanceof AllPermission) + { + if (allPermission == null) + { + allPermission = new + DefaultPermissionCollection("java.security.AllPermission"); + + perms.put("java.security.AllPermission", allPermission); + } + } + else + { + Object obj = perms.get(perm.getClass().getName()); + if (obj != null) + { + if (!(obj instanceof PermissionCollection)) + throw new RuntimeException("Internal error in Permissions"); + + ((PermissionCollection) obj).add(perm); + } + else + { + PermissionCollection pc = perm.newPermissionCollection(); + if (pc == null) + pc = new DefaultPermissionCollection(perm.getClass().getName()); + + pc.add(perm); + + perms.put(perm.getClass().getName(), pc); + } + } + } + + /** + * This method tests whether or not the specified <code>Permission</code> + * is implied by this <code>PermissionCollection</code>. + * + * @param perm The <code>Permission</code> to test. + * + * @return <code>true</code> if the specified permission is implied by this <code>PermissionCollection</code>, or <code>false</code> otherwise. + */ + public boolean implies(Permission perm) + { + if (allPermission != null) + return (true); + + Object obj = perms.get(perm.getClass().getName()); + if (obj == null) + return (false); + + if (!(obj instanceof PermissionCollection)) + return (false); + + return (((PermissionCollection) obj).implies(perm)); + } + + /** + * This method returns an <code>Enumeration</code> which contains a + * list of all <code>Permission</code> objects contained in this + * collection. + * + * @return An <code>Enumeration</code> of this collection's elements. + */ + public Enumeration elements() + { + return new Enumeration() + { + Enumeration main_enum = perms.elements(); + Enumeration sub_enum; + + public boolean hasMoreElements() + { + if (sub_enum == null) + if (main_enum == null) + return (false); + else + { + if (!main_enum.hasMoreElements()) + return (false); + else + { + try + { + PermissionCollection pc = + (PermissionCollection) main_enum.nextElement(); + sub_enum = pc.elements(); + } + catch (NoSuchElementException e) + { + return (false); + } + } + } + else if (!sub_enum.hasMoreElements()) + { + sub_enum = null; + return (hasMoreElements()); + } + + return (true); + } + + public Object nextElement() throws NoSuchElementException + { + if (!hasMoreElements()) + throw new NoSuchElementException(); + + return (sub_enum.nextElement()); + } + }; + } + + static class DefaultPermissionCollection extends PermissionCollection + implements Serializable + { + + // Type of Permission we can store + private Class permcls; + + // Hashtable where we store permissions. + private Hashtable perms = new Hashtable(); + + DefaultPermissionCollection(String permtype) throws IllegalArgumentException + { + try + { + permcls = Class.forName(permtype); + } + catch(ClassNotFoundException e) + { + throw new IllegalArgumentException(e.getMessage()); + } + } + + public void add(Permission perm) + throws SecurityException, IllegalArgumentException + { + if (isReadOnly()) + throw new SecurityException("PermissionCollection is read only"); + + if (!permcls.isInstance(perm)) + throw new IllegalArgumentException("Wrong permission type: " + + perm.getClass().getName()); + + if (perms.get(perm.getName()) != null) + throw new IllegalArgumentException("Duplicate permission: " + + perm.getName()); + + perms.put(perm.getName(), perm); + } + + public boolean implies(Permission perm) + { + Object obj = perms.get(perm.getName()); + if (obj == null) + return(false); + + if (!(obj instanceof Permission)) + return(false); + + Permission p = (Permission)obj; + + return(p.implies(perm)); + } + + public Enumeration elements() + { + return(perms.elements()); + } + } +} |