/* * Copyright (c) 1999, 2010, 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 com.sun.security.auth; import java.net.URL;import java.util.*;import java.security.CodeSource;import java.security.Principal;import java.security.cert.Certificate;import java.lang.reflect.Constructor; import javax.security.auth.Subject; /** * <p> This <code>SubjectCodeSource</code> class contains * a <code>URL</code>, signer certificates, and either a <code>Subject</code> * (that represents the <code>Subject</code> in the current * <code>AccessControlContext</code>), * or a linked list of Principals/PrincipalComparators * (that represent a "subject" in a <code>Policy</code>). * */class SubjectCodeSource extends CodeSource implements java.io.Serializable {     private static final long serialVersionUID = 6039418085604715275L;     private static final java.util.ResourceBundle rb =        java.security.AccessController.doPrivileged        (new java.security.PrivilegedAction<java.util.ResourceBundle>() {            public java.util.ResourceBundle run() {                return (java.util.ResourceBundle.getBundle                        ("sun.security.util.AuthResources"));            }        });     private Subject subject;    private LinkedList<PolicyParser.PrincipalEntry> principals;    private static final Class[] PARAMS = { String.class };    private static final sun.security.util.Debug debug =        sun.security.util.Debug.getInstance("auth", "\t[Auth Access]");    private ClassLoader sysClassLoader;     /**     * Creates a new <code>SubjectCodeSource</code>     * with the given <code>Subject</code>, principals, <code>URL</code>,     * and signers (Certificates).  The <code>Subject</code>     * represents the <code>Subject</code> associated with the current     * <code>AccessControlContext</code>.     * The Principals are given as a <code>LinkedList</code>     * of <code>PolicyParser.PrincipalEntry</code> objects.     * Typically either a <code>Subject</code> will be provided,     * or a list of <code>principals</code> will be provided     * (not both).     *     * <p>     *     * @param subject the <code>Subject</code> associated with this     *                  <code>SubjectCodeSource</code> <p>     *     * @param url the <code>URL</code> associated with this     *                  <code>SubjectCodeSource</code> <p>     *     * @param certs the signers associated with this     *                  <code>SubjectCodeSource</code> <p>     */    SubjectCodeSource(Subject subject,        LinkedList<PolicyParser.PrincipalEntry> principals,        URL url, Certificate[] certs) {         super(url, certs);        this.subject = subject;        this.principals = (principals == null ?                new LinkedList<PolicyParser.PrincipalEntry>() :                new LinkedList<PolicyParser.PrincipalEntry>(principals));        sysClassLoader = java.security.AccessController.doPrivileged        (new java.security.PrivilegedAction<ClassLoader>() {            public ClassLoader run() {                    return ClassLoader.getSystemClassLoader();            }        });    }     /**     * Get the Principals associated with this <code>SubjectCodeSource</code>.     * The Principals are retrieved as a <code>LinkedList</code>     * of <code>PolicyParser.PrincipalEntry</code> objects.     *     * <p>     *     * @return the Principals associated with this     *          <code>SubjectCodeSource</code> as a <code>LinkedList</code>     *          of <code>PolicyParser.PrincipalEntry</code> objects.     */    LinkedList<PolicyParser.PrincipalEntry> getPrincipals() {        return principals;    }     /**     * Get the <code>Subject</code> associated with this     * <code>SubjectCodeSource</code>.  The <code>Subject</code>     * represents the <code>Subject</code> associated with the     * current <code>AccessControlContext</code>.     *     * <p>     *     * @return the <code>Subject</code> associated with this     *          <code>SubjectCodeSource</code>.     */    Subject getSubject() {        return subject;    }     /**     * Returns true if this <code>SubjectCodeSource</code> object "implies"     * the specified <code>CodeSource</code>.     * More specifically, this method makes the following checks.     * If any fail, it returns false.  If they all succeed, it returns true.     *     * <p>     * <ol>     * <li> The provided codesource must not be <code>null</code>.     * <li> codesource must be an instance of <code>SubjectCodeSource</code>.     * <li> super.implies(codesource) must return true.     * <li> for each principal in this codesource's principal list:     * <ol>     * <li>     if the principal is an instanceof     *          <code>PrincipalComparator</code>, then the principal must     *          imply the provided codesource's <code>Subject</code>.     * <li>     if the principal is not an instanceof     *          <code>PrincipalComparator</code>, then the provided     *          codesource's <code>Subject</code> must have an     *          associated <code>Principal</code>, <i>P</i>, where     *          P.getClass().getName equals principal.principalClass,     *          and P.getName() equals principal.principalName.     * </ol>     * </ol>     *     * <p>     *     * @param codesource the <code>CodeSource</code> to compare against.     *     * @return true if this <code>SubjectCodeSource</code> implies the     *          the specified <code>CodeSource</code>.     */    public boolean implies(CodeSource codesource) {         LinkedList<PolicyParser.PrincipalEntry> subjectList = null;         if (codesource == null ||            !(codesource instanceof SubjectCodeSource) ||            !(super.implies(codesource))) {             if (debug != null)                debug.println("\tSubjectCodeSource.implies: FAILURE 1");            return false;        }         SubjectCodeSource that = (SubjectCodeSource)codesource;         // if the principal list in the policy "implies"        // the Subject associated with the current AccessControlContext,        // then return true         if (this.principals == null) {            if (debug != null)                debug.println("\tSubjectCodeSource.implies: PASS 1");            return true;        }         if (that.getSubject() == null ||            that.getSubject().getPrincipals().size() == 0) {            if (debug != null)                debug.println("\tSubjectCodeSource.implies: FAILURE 2");            return false;        }         ListIterator<PolicyParser.PrincipalEntry> li =                this.principals.listIterator(0);        while (li.hasNext()) {            PolicyParser.PrincipalEntry pppe = li.next();            try {                 // handle PrincipalComparators                 Class principalComparator = Class.forName(pppe.principalClass,                                                        true,                                                        sysClassLoader);                Constructor c = principalComparator.getConstructor(PARAMS);                PrincipalComparator pc =                        (PrincipalComparator)c.newInstance                        (new Object[] { pppe.principalName });                 if (!pc.implies(that.getSubject())) {                    if (debug != null)                        debug.println("\tSubjectCodeSource.implies: FAILURE 3");                    return false;                } else {                    if (debug != null)                        debug.println("\tSubjectCodeSource.implies: PASS 2");                    return true;                }            } catch (Exception e) {                 // no PrincipalComparator, simply compare Principals                 if (subjectList == null) {                     if (that.getSubject() == null) {                        if (debug != null)                            debug.println("\tSubjectCodeSource.implies: " +                                        "FAILURE 4");                        return false;                    }                    Iterator<Principal> i =                                that.getSubject().getPrincipals().iterator();                     subjectList = new LinkedList<PolicyParser.PrincipalEntry>();                    while (i.hasNext()) {                        Principal p = i.next();                        PolicyParser.PrincipalEntry spppe =                                new PolicyParser.PrincipalEntry                                (p.getClass().getName(), p.getName());                        subjectList.add(spppe);                    }                }                 if (!subjectListImpliesPrincipalEntry(subjectList, pppe)) {                    if (debug != null)                        debug.println("\tSubjectCodeSource.implies: FAILURE 5");                    return false;                }            }        }         if (debug != null)            debug.println("\tSubjectCodeSource.implies: PASS 3");        return true;    }     /**     * This method returns, true, if the provided <i>subjectList</i>     * "contains" the <code>Principal</code> specified     * in the provided <i>pppe</i> argument.     *     * Note that the provided <i>pppe</i> argument may have     * wildcards (*) for the <code>Principal</code> class and name,     * which need to be considered.     *     * <p>     *     * @param subjectList a list of PolicyParser.PrincipalEntry objects     *          that correspond to all the Principals in the Subject currently     *          on this thread's AccessControlContext. <p>     *     * @param pppe the Principals specified in a grant entry.     *     * @return true if the provided <i>subjectList</i> "contains"     *          the <code>Principal</code> specified in the provided     *          <i>pppe</i> argument.     */    private boolean subjectListImpliesPrincipalEntry(                LinkedList<PolicyParser.PrincipalEntry> subjectList,                PolicyParser.PrincipalEntry pppe) {         ListIterator<PolicyParser.PrincipalEntry> li =                                        subjectList.listIterator(0);        while (li.hasNext()) {            PolicyParser.PrincipalEntry listPppe = li.next();             if (pppe.principalClass.equals                        (PolicyParser.PrincipalEntry.WILDCARD_CLASS) ||                pppe.principalClass.equals                        (listPppe.principalClass)) {                 if (pppe.principalName.equals                        (PolicyParser.PrincipalEntry.WILDCARD_NAME) ||                    pppe.principalName.equals                        (listPppe.principalName))                    return true;            }        }        return false;    }     /**     * Tests for equality between the specified object and this     * object. Two <code>SubjectCodeSource</code> objects are considered equal     * if their locations are of identical value, if the two sets of     * Certificates are of identical values, and if the     * Subjects are equal, and if the PolicyParser.PrincipalEntry values     * are of identical values.  It is not required that     * the Certificates or PolicyParser.PrincipalEntry values     * be in the same order.     *     * <p>     *     * @param obj the object to test for equality with this object.     *     * @return true if the objects are considered equal, false otherwise.     */    public boolean equals(Object obj) {         if (obj == this)            return true;         if (super.equals(obj) == false)            return false;         if (!(obj instanceof SubjectCodeSource))            return false;         SubjectCodeSource that = (SubjectCodeSource)obj;         // the principal lists must match        try {            if (this.getSubject() != that.getSubject())                return false;        } catch (SecurityException se) {            return false;        }         if ((this.principals == null && that.principals != null) ||            (this.principals != null && that.principals == null))            return false;         if (this.principals != null && that.principals != null) {            if (!this.principals.containsAll(that.principals) ||                !that.principals.containsAll(this.principals))                 return false;        }         return true;    }     /**     * Return a hashcode for this <code>SubjectCodeSource</code>.     *     * <p>     *     * @return a hashcode for this <code>SubjectCodeSource</code>.     */    public int hashCode() {        return super.hashCode();    }     /**     * Return a String representation of this <code>SubjectCodeSource</code>.     *     * <p>     *     * @return a String representation of this <code>SubjectCodeSource</code>.     */    public String toString() {        String returnMe = super.toString();        if (getSubject() != null) {            if (debug != null) {                final Subject finalSubject = getSubject();                returnMe = returnMe + "\n" +                        java.security.AccessController.doPrivileged                                (new java.security.PrivilegedAction<String>() {                                public String run() {                                    return finalSubject.toString();                                }                        });            } else {                returnMe = returnMe + "\n" + getSubject().toString();            }        }        if (principals != null) {            ListIterator<PolicyParser.PrincipalEntry> li =                                        principals.listIterator();            while (li.hasNext()) {                PolicyParser.PrincipalEntry pppe = li.next();                returnMe = returnMe + rb.getString("NEWLINE") +                        pppe.principalClass + " " +                        pppe.principalName;            }        }        return returnMe;    }}