mirror of
https://github.com/openjdk/jdk.git
synced 2025-08-28 07:14:30 +02:00
8187443: Forest Consolidation: Move files to unified layout
Reviewed-by: darcy, ihse
This commit is contained in:
Erik Joelsson
parent
270fe13182
commit
3789983e89
56923 changed files with 3 additions and 15727 deletions
305
src/java.base/share/classes/java/security/SecureClassLoader.java
Normal file
305
src/java.base/share/classes/java/security/SecureClassLoader.java
Normal file
|
|
@ -0,0 +1,305 @@
|
|||
/*
|
||||
* Copyright (c) 1997, 2015, 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.security;
|
||||
|
||||
import java.util.Map;
|
||||
import java.util.Objects;
|
||||
import java.util.concurrent.ConcurrentHashMap;
|
||||
import java.util.function.Function;
|
||||
|
||||
import sun.security.util.Debug;
|
||||
|
||||
/**
|
||||
* This class extends ClassLoader with additional support for defining
|
||||
* classes with an associated code source and permissions which are
|
||||
* retrieved by the system policy by default.
|
||||
*
|
||||
* @author Li Gong
|
||||
* @author Roland Schemers
|
||||
* @since 1.2
|
||||
*/
|
||||
public class SecureClassLoader extends ClassLoader {
|
||||
/*
|
||||
* If initialization succeed this is set to true and security checks will
|
||||
* succeed. Otherwise the object is not initialized and the object is
|
||||
* useless.
|
||||
*/
|
||||
private final boolean initialized;
|
||||
|
||||
/*
|
||||
* Map that maps the CodeSource to a ProtectionDomain. The key is a
|
||||
* CodeSourceKey class that uses a String instead of a URL to avoid
|
||||
* potential expensive name service lookups. This does mean that URLs that
|
||||
* are equivalent after nameservice lookup will be placed in separate
|
||||
* ProtectionDomains; however during policy enforcement these URLs will be
|
||||
* canonicalized and resolved resulting in a consistent set of granted
|
||||
* permissions.
|
||||
*/
|
||||
private final Map<CodeSourceKey, ProtectionDomain> pdcache
|
||||
= new ConcurrentHashMap<>(11);
|
||||
|
||||
static {
|
||||
ClassLoader.registerAsParallelCapable();
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a new SecureClassLoader using the specified parent
|
||||
* class loader for delegation.
|
||||
*
|
||||
* <p>If there is a security manager, this method first
|
||||
* calls the security manager's {@code checkCreateClassLoader}
|
||||
* method to ensure creation of a class loader is allowed.
|
||||
*
|
||||
* @param parent the parent ClassLoader
|
||||
* @exception SecurityException if a security manager exists and its
|
||||
* {@code checkCreateClassLoader} method doesn't allow
|
||||
* creation of a class loader.
|
||||
* @see SecurityManager#checkCreateClassLoader
|
||||
*/
|
||||
protected SecureClassLoader(ClassLoader parent) {
|
||||
super(parent);
|
||||
// this is to make the stack depth consistent with 1.1
|
||||
SecurityManager security = System.getSecurityManager();
|
||||
if (security != null) {
|
||||
security.checkCreateClassLoader();
|
||||
}
|
||||
initialized = true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a new SecureClassLoader using the default parent class
|
||||
* loader for delegation.
|
||||
*
|
||||
* <p>If there is a security manager, this method first
|
||||
* calls the security manager's {@code checkCreateClassLoader}
|
||||
* method to ensure creation of a class loader is allowed.
|
||||
*
|
||||
* @exception SecurityException if a security manager exists and its
|
||||
* {@code checkCreateClassLoader} method doesn't allow
|
||||
* creation of a class loader.
|
||||
* @see SecurityManager#checkCreateClassLoader
|
||||
*/
|
||||
protected SecureClassLoader() {
|
||||
super();
|
||||
// this is to make the stack depth consistent with 1.1
|
||||
SecurityManager security = System.getSecurityManager();
|
||||
if (security != null) {
|
||||
security.checkCreateClassLoader();
|
||||
}
|
||||
initialized = true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a new {@code SecureClassLoader} of the specified name and
|
||||
* using the specified parent class loader for delegation.
|
||||
*
|
||||
* @param name class loader name; or {@code null} if not named
|
||||
* @param parent the parent class loader
|
||||
*
|
||||
* @throws IllegalArgumentException if the given name is empty.
|
||||
*
|
||||
* @throws SecurityException if a security manager exists and its
|
||||
* {@link SecurityManager#checkCreateClassLoader()} method
|
||||
* doesn't allow creation of a class loader.
|
||||
*
|
||||
* @since 9
|
||||
* @spec JPMS
|
||||
*/
|
||||
protected SecureClassLoader(String name, ClassLoader parent) {
|
||||
super(name, parent);
|
||||
SecurityManager security = System.getSecurityManager();
|
||||
if (security != null) {
|
||||
security.checkCreateClassLoader();
|
||||
}
|
||||
initialized = true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts an array of bytes into an instance of class Class,
|
||||
* with an optional CodeSource. Before the
|
||||
* class can be used it must be resolved.
|
||||
* <p>
|
||||
* If a non-null CodeSource is supplied a ProtectionDomain is
|
||||
* constructed and associated with the class being defined.
|
||||
*
|
||||
* @param name the expected name of the class, or {@code null}
|
||||
* if not known, using '.' and not '/' as the separator
|
||||
* and without a trailing ".class" suffix.
|
||||
* @param b the bytes that make up the class data. The bytes in
|
||||
* positions {@code off} through {@code off+len-1}
|
||||
* should have the format of a valid class file as defined by
|
||||
* <cite>The Java™ Virtual Machine Specification</cite>.
|
||||
* @param off the start offset in {@code b} of the class data
|
||||
* @param len the length of the class data
|
||||
* @param cs the associated CodeSource, or {@code null} if none
|
||||
* @return the {@code Class} object created from the data,
|
||||
* and optional CodeSource.
|
||||
* @exception ClassFormatError if the data did not contain a valid class
|
||||
* @exception IndexOutOfBoundsException if either {@code off} or
|
||||
* {@code len} is negative, or if
|
||||
* {@code off+len} is greater than {@code b.length}.
|
||||
*
|
||||
* @exception SecurityException if an attempt is made to add this class
|
||||
* to a package that contains classes that were signed by
|
||||
* a different set of certificates than this class, or if
|
||||
* the class name begins with "java.".
|
||||
*/
|
||||
protected final Class<?> defineClass(String name,
|
||||
byte[] b, int off, int len,
|
||||
CodeSource cs)
|
||||
{
|
||||
return defineClass(name, b, off, len, getProtectionDomain(cs));
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts a {@link java.nio.ByteBuffer ByteBuffer}
|
||||
* into an instance of class {@code Class}, with an optional CodeSource.
|
||||
* Before the class can be used it must be resolved.
|
||||
* <p>
|
||||
* If a non-null CodeSource is supplied a ProtectionDomain is
|
||||
* constructed and associated with the class being defined.
|
||||
*
|
||||
* @param name the expected name of the class, or {@code null}
|
||||
* if not known, using '.' and not '/' as the separator
|
||||
* and without a trailing ".class" suffix.
|
||||
* @param b the bytes that make up the class data. The bytes from positions
|
||||
* {@code b.position()} through {@code b.position() + b.limit() -1}
|
||||
* should have the format of a valid class file as defined by
|
||||
* <cite>The Java™ Virtual Machine Specification</cite>.
|
||||
* @param cs the associated CodeSource, or {@code null} if none
|
||||
* @return the {@code Class} object created from the data,
|
||||
* and optional CodeSource.
|
||||
* @exception ClassFormatError if the data did not contain a valid class
|
||||
* @exception SecurityException if an attempt is made to add this class
|
||||
* to a package that contains classes that were signed by
|
||||
* a different set of certificates than this class, or if
|
||||
* the class name begins with "java.".
|
||||
*
|
||||
* @since 1.5
|
||||
*/
|
||||
protected final Class<?> defineClass(String name, java.nio.ByteBuffer b,
|
||||
CodeSource cs)
|
||||
{
|
||||
return defineClass(name, b, getProtectionDomain(cs));
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the permissions for the given CodeSource object.
|
||||
* <p>
|
||||
* This method is invoked by the defineClass method which takes
|
||||
* a CodeSource as an argument when it is constructing the
|
||||
* ProtectionDomain for the class being defined.
|
||||
*
|
||||
* @param codesource the codesource.
|
||||
*
|
||||
* @return the permissions granted to the codesource.
|
||||
*
|
||||
*/
|
||||
protected PermissionCollection getPermissions(CodeSource codesource)
|
||||
{
|
||||
check();
|
||||
return new Permissions(); // ProtectionDomain defers the binding
|
||||
}
|
||||
|
||||
/*
|
||||
* holder class for the static field "debug" to delay its initialization
|
||||
*/
|
||||
private static class DebugHolder {
|
||||
private static final Debug debug = Debug.getInstance("scl");
|
||||
}
|
||||
|
||||
/*
|
||||
* Returned cached ProtectionDomain for the specified CodeSource.
|
||||
*/
|
||||
private ProtectionDomain getProtectionDomain(CodeSource cs) {
|
||||
if (cs == null) {
|
||||
return null;
|
||||
}
|
||||
|
||||
// Use a CodeSourceKey object key. It should behave in the
|
||||
// same manner as the CodeSource when compared for equality except
|
||||
// that no nameservice lookup is done on the hostname (String comparison
|
||||
// only), and the fragment is not considered.
|
||||
CodeSourceKey key = new CodeSourceKey(cs);
|
||||
return pdcache.computeIfAbsent(key, new Function<>() {
|
||||
@Override
|
||||
public ProtectionDomain apply(CodeSourceKey key /* not used */) {
|
||||
PermissionCollection perms
|
||||
= SecureClassLoader.this.getPermissions(cs);
|
||||
ProtectionDomain pd = new ProtectionDomain(
|
||||
cs, perms, SecureClassLoader.this, null);
|
||||
if (DebugHolder.debug != null) {
|
||||
DebugHolder.debug.println(" getPermissions " + pd);
|
||||
DebugHolder.debug.println("");
|
||||
}
|
||||
return pd;
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
/*
|
||||
* Check to make sure the class loader has been initialized.
|
||||
*/
|
||||
private void check() {
|
||||
if (!initialized) {
|
||||
throw new SecurityException("ClassLoader object not initialized");
|
||||
}
|
||||
}
|
||||
|
||||
private static class CodeSourceKey {
|
||||
private final CodeSource cs;
|
||||
|
||||
CodeSourceKey(CodeSource cs) {
|
||||
this.cs = cs;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int hashCode() {
|
||||
String locationNoFrag = cs.getLocationNoFragString();
|
||||
return locationNoFrag != null ? locationNoFrag.hashCode() : 0;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean equals(Object obj) {
|
||||
if (obj == this) {
|
||||
return true;
|
||||
}
|
||||
|
||||
if (!(obj instanceof CodeSourceKey)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
CodeSourceKey csk = (CodeSourceKey) obj;
|
||||
|
||||
if (!Objects.equals(cs.getLocationNoFragString(),
|
||||
csk.cs.getLocationNoFragString())) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return cs.matchCerts(csk.cs, true);
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue