264 lines
8.6 KiB
Java
264 lines
8.6 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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* Copyright (c) 1996, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.security;
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import java.io.Serializable;
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import java.util.Enumeration;
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import java.util.Properties;
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/**
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* <p>This class represents a scope for identities. It is an Identity
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* itself, and therefore has a name and can have a scope. It can also
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* optionally have a public key and associated certificates.
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*
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* <p>An IdentityScope can contain Identity objects of all kinds, including
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* Signers. All types of Identity objects can be retrieved, added, and
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* removed using the same methods. Note that it is possible, and in fact
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* expected, that different types of identity scopes will
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* apply different policies for their various operations on the
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* various types of Identities.
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*
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* <p>There is a one-to-one mapping between keys and identities, and
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* there can only be one copy of one key per scope. For example, suppose
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* <b>Acme Software, Inc</b> is a software publisher known to a user.
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* Suppose it is an Identity, that is, it has a public key, and a set of
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* associated certificates. It is named in the scope using the name
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* "Acme Software". No other named Identity in the scope has the same
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* public key. Of course, none has the same name as well.
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*
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* @see Identity
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* @see Signer
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* @see Principal
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* @see Key
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*
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* @author Benjamin Renaud
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* @since 1.1
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*
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* @deprecated This class is deprecated and subject to removal in a future
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* version of Java SE. It has been replaced by
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* {@code java.security.KeyStore}, the {@code java.security.cert} package,
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* and {@code java.security.Principal}.
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*/
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@Deprecated(since="1.2", forRemoval=true)
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// Android-added: Identity is deprecated too, no need to warn here.
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@SuppressWarnings("removal")
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public abstract
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class IdentityScope extends Identity {
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private static final long serialVersionUID = -2337346281189773310L;
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/* The system's scope */
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private static IdentityScope scope;
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// initialize the system scope
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private static void initializeSystemScope() {
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String classname = AccessController.doPrivileged(
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new PrivilegedAction<>() {
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public String run() {
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return Security.getProperty("system.scope");
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}
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});
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if (classname == null) {
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return;
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} else {
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try {
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// Android-changed: Actually set the system scope after initializing it
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// Class.forName(classname);
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scope = (IdentityScope) Class.forName(classname).newInstance();
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} catch (Exception e) {
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System.err.println("unable to establish a system scope from " +
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classname);
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e.printStackTrace();
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}
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}
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}
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/**
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* This constructor is used for serialization only and should not
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* be used by subclasses.
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*/
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protected IdentityScope() {
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this("restoring...");
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}
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/**
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* Constructs a new identity scope with the specified name.
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*
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* @param name the scope name.
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*/
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public IdentityScope(String name) {
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super(name);
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}
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/**
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* Constructs a new identity scope with the specified name and scope.
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*
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* @param name the scope name.
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* @param scope the scope for the new identity scope.
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*
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* @exception KeyManagementException if there is already an identity
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* with the same name in the scope.
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*/
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public IdentityScope(String name, IdentityScope scope)
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throws KeyManagementException {
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super(name, scope);
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}
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/**
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* Returns the system's identity scope.
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*
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* @return the system's identity scope, or {@code null} if none has been
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* set.
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*
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* @see #setSystemScope
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*/
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public static IdentityScope getSystemScope() {
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if (scope == null) {
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initializeSystemScope();
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}
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return scope;
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}
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/**
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* Sets the system's identity scope.
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*
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* <p>First, if there is a security manager, its
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* {@code checkSecurityAccess}
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* method is called with {@code "setSystemScope"}
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* as its argument to see if it's ok to set the identity scope.
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*
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* @param scope the scope to set.
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*
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* @exception SecurityException if a security manager exists and its
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* {@code checkSecurityAccess} method doesn't allow
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* setting the identity scope.
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*
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* @see #getSystemScope
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* @see SecurityManager#checkSecurityAccess
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*/
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protected static void setSystemScope(IdentityScope scope) {
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check("setSystemScope");
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IdentityScope.scope = scope;
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}
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/**
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* Returns the number of identities within this identity scope.
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*
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* @return the number of identities within this identity scope.
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*/
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public abstract int size();
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/**
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* Returns the identity in this scope with the specified name (if any).
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*
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* @param name the name of the identity to be retrieved.
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*
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* @return the identity named {@code name}, or null if there are
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* no identities named {@code name} in this scope.
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*/
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public abstract Identity getIdentity(String name);
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/**
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* Retrieves the identity whose name is the same as that of the
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* specified principal. (Note: Identity implements Principal.)
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*
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* @param principal the principal corresponding to the identity
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* to be retrieved.
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*
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* @return the identity whose name is the same as that of the
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* principal, or null if there are no identities of the same name
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* in this scope.
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*/
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public Identity getIdentity(Principal principal) {
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return getIdentity(principal.getName());
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}
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/**
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* Retrieves the identity with the specified public key.
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*
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* @param key the public key for the identity to be returned.
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*
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* @return the identity with the given key, or null if there are
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* no identities in this scope with that key.
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*/
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public abstract Identity getIdentity(PublicKey key);
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/**
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* Adds an identity to this identity scope.
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*
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* @param identity the identity to be added.
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*
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* @exception KeyManagementException if the identity is not
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* valid, a name conflict occurs, another identity has the same
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* public key as the identity being added, or another exception
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* occurs. */
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public abstract void addIdentity(Identity identity)
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throws KeyManagementException;
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/**
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* Removes an identity from this identity scope.
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*
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* @param identity the identity to be removed.
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*
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* @exception KeyManagementException if the identity is missing,
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* or another exception occurs.
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*/
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public abstract void removeIdentity(Identity identity)
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throws KeyManagementException;
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/**
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* Returns an enumeration of all identities in this identity scope.
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*
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* @return an enumeration of all identities in this identity scope.
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*/
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public abstract Enumeration<Identity> identities();
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/**
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* Returns a string representation of this identity scope, including
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* its name, its scope name, and the number of identities in this
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* identity scope.
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*
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* @return a string representation of this identity scope.
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*/
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public String toString() {
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return super.toString() + "[" + size() + "]";
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}
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private static void check(String directive) {
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SecurityManager security = System.getSecurityManager();
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if (security != null) {
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security.checkSecurityAccess(directive);
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}
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}
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}
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