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Java example source code file (Subset.java)

This example Java source code file (Subset.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

does, error, error\:string, exists, hashset, integer, objcred, object, runtimeexception, securityexception, solarisprincipal, string, subject, util, xyz

The Subset.java Java example source code

/*
 * Copyright (c) 2000, 2007, 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.
 *
 * 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.
 */

/*
 * @test
 * @author  Ram Marti
 * @bug 4326852
 * @summary Retrive a subset of private credentials can be accessed
 * @run main/othervm/policy=Subset.policy Subset
 */

import java.util.*;
import com.sun.security.auth.SolarisPrincipal;
import javax.security.auth.Subject;

/*
 * Author : Ram Marti
 * This is a test program to verify the fix for Bug 4326852
 * (impossible to extract a subset of private credentials)
 * The policy file used allows read access only to String classes.
 * grant {
 *    permission javax.security.auth.AuthPermission \
 *              "modifyPrivateCredentials";
 *    permission javax.security.auth.PrivateCredentialPermission \
 * "java.lang.String com.sun.security.auth.SolarisPrincipal \"user"", "read";
 * };

 * The test verifies the following:
 *      - String class creds can be retrieved by using
 *        getPrivateCredentials(String.class)
 *      - The above set is not backed internally
 *      - getPrivateCredentials(Boolean or Integer) returns an empty set
 *      - Set is returned by getPrivateCredentials() throws
 *        security exception when trying to access non-String
 *        class credentials
 *      - The above set is internally backed up and any changes in
 *        internal private creds are reflected in the set returned
 *      - When the above set throws security exception the iterator
 *      - is advanced to the next item in the list of creds.
 *      - equals,contains,containsAll,add,remove operations work correctly
 */

public class Subset {
    public static void main(String[] args) throws Exception {
        int exceptionCounter =0;
        Iterator iter1;
        HashSet creds = new HashSet();
        Subject emptys =
            new Subject(false,  //readOnly
                        Collections.singleton(new SolarisPrincipal("user")),
                        Collections.EMPTY_SET,
                        creds);
        /* Test principals */

        Set princ= emptys.getPrincipals();
        HashSet collp= new HashSet();
        collp.add(new String("abc"));
        collp.add(new String("def"));
        collp.add(new String("Exists"));
        collp.add(new String("Does not Exist"));
        try {
            if (princ.containsAll(collp)) {
                throw new Exception ("Error: Contains the collection");
            } else
                System.out.println ("Does not Contain the collection");
        } catch (SecurityException e) {
            throw new Exception ("Error: Exception in containsAll (string coll)!!");
        }


        Set p1 = emptys.getPrivateCredentials();

        if (p1.size() != 0) {
              throw new Exception("Error:p1 size should have been 6 and was " +
                         p1.size());
        }

        creds.add("abc");
        creds.add(new Integer(3));
        creds.add(Boolean.TRUE);
        Subject sremove =
            new Subject(false,  //readOnly
                        Collections.singleton(new SolarisPrincipal("user")),
                        Collections.EMPTY_SET,
                        creds);
        Set p2 = sremove.getPrivateCredentials();

        if (p2.size() !=3){
              throw new Exception("Error: p2 size should have been 3 and was " +
                         p2.size());
        }
        iter1 = p2.iterator();
        exceptionCounter=0;
        while (iter1.hasNext()) {
            try {
                Object o = iter1.next();
                System.out.println(" private creds of class " +
                        o.getClass() + "value is " + o.toString());
            } catch (SecurityException e) {
                System.out.println("Expected Exception occured");
                exceptionCounter++;
            }
        }
        if (exceptionCounter != 2) {
            throw new Exception("Expected number of exceptions was 2 " +
                        "The actual number was " + exceptionCounter);
        }

        // Verify that remove op was successful

        iter1.remove();
        if (p2.size() !=2) {
           throw new RuntimeException("Error: p2 size should have been 2 and was " +
                               p2.size());
        }
        System.out.println ("Checking the value after removal");
        p2 = sremove.getPrivateCredentials();
        try {
                if (!p2.add(new String("XYZ"))) {

                        throw new RuntimeException("Error in adding string");
                }
                if (!p2.add(new Integer(99))) {

                        throw new RuntimeException("Error in adding Integer");
                }
                HashSet coll1 = new HashSet();
                coll1.add(new String("RST"));
                coll1.add(new Integer(1));
                if (!p2.addAll(coll1)) {

                        throw new RuntimeException("Error in addAll");
                }

        } catch (Exception e){
                e.printStackTrace();
                throw new RuntimeException("Unexpected exception in add");

        }
        iter1 = p2.iterator();

        while (iter1.hasNext()) {
            try {
                Object o = iter1.next();
                System.out.println(" private creds of class " +
                        o.getClass() + "value is " + o.toString());
            } catch (SecurityException e) {
                // System.out.println("Exception!!");
            }
        }
        iter1 = p2.iterator();

        System.out.println ("Checked the value after removal");

        HashSet creds1 = new HashSet();
        creds1.add("abc");
        creds1.add("def");
        creds1.add(Boolean.TRUE);
        creds1.add(new Integer(1));
        creds1.add(new String("Exists"));
        Subject scontain =
            new Subject(false,  //readOnly
                        Collections.singleton(new SolarisPrincipal("user")),
                        Collections.EMPTY_SET,
                        creds1);
        p2 = scontain.getPrivateCredentials();
        try {
            Object ObjAr = p2.toArray();
        } catch (SecurityException e) {
                System.out.println("Should get an Exception in toArray()");
        }

        HashSet creds3 = new HashSet();
        creds3.add (new String("abc"));
        p2 = scontain.getPrivateCredentials();

        try {
            Object ObjCred = (Object)creds3.clone();
            System.out.println ("Size of p2 is " + p2.size() +
                                "Size of ObjCred is " +
                                        ((HashSet)ObjCred).size()
                                );
            if (p2.equals(ObjCred))
                throw new RuntimeException("Error:Equals ObjCred  *** ");
            else
                System.out.println ("Does not Equal Objcred");
        } catch (SecurityException e) {
            throw new RuntimeException("Error:Should not get an Exception in equals of creds3");


        }

        try {
            Object ObjCred = (Object)creds1.clone();
            System.out.println ("Size of p2 is " + p2.size() +
                                "Size of ObjCred is " +
                                        ((HashSet)ObjCred).size()
                                );
            if (p2.equals(ObjCred))
                throw new RuntimeException ("Error: Equals ObjCred");
            else
                throw new RuntimeException ("Error: Does not Equal Objcred");
        } catch (SecurityException e) {
            System.out.println("Should get an Exception in equals of creds1");
        }
        /* We can store only string types of creds
         * Let us create a subject with only string type of creds
         */

        HashSet creds2 = new HashSet();
        creds2.add("abc");
        creds2.add("def");
        creds2.add("ghi");
        Subject sstring =
            new Subject(false,  //readOnly
                        Collections.singleton(new SolarisPrincipal("user")),
                        Collections.EMPTY_SET,
                        creds2);
        p2 = sstring.getPrivateCredentials();
        try {
            String[] selectArray = { "exits", "Does not exist"};
            Object ObjAr = p2.toArray(selectArray);
            System.out.println(" No Exception in ObjAr- String");

        } catch (SecurityException e) {
                throw new RuntimeException(" Error:  Exception in ObjAr- String!!");
        }
        /*
         * New subject scontain1, set p3, creds4
         */


        HashSet creds4 = new HashSet();
        creds4.add("abc");
        creds4.add("def");
        creds4.add("ghi");
        creds4.add(new Integer(1));
        creds4.add("Exists");
        Subject scontain1 =
            new Subject(false,  //readOnly
                        Collections.singleton(new SolarisPrincipal("user")),
                        Collections.EMPTY_SET,
                        creds4);
        Set p3 = scontain1.getPrivateCredentials();
        try {
            Object Obj = new String("Exists");
            if (p3.contains(Obj))
                System.out.println ("Contains String cred");
            else
                throw new RuntimeException ("Error Does not Contain the stringcred exists");
        } catch (SecurityException e) {
            throw new RuntimeException("Error:Exception!!");

        }
        try {
            Object ObjCred = (Object)creds4.clone();
            if (p3.equals(ObjCred))
                throw new RuntimeException ("Error:Equals ObjCred");
            else
                throw new RuntimeException ("Error:Does not Equal Objcred");
        } catch (SecurityException e) {
            System.out.println("Should  get an Exception in equals");
        }

        try {
            Object Obj = new Integer(1);
            if (p3.contains(Obj))
                throw new RuntimeException ("Error:Contains integer cred");
            else
                throw new RuntimeException ("Error:Does not Contain integer cred");
        } catch (SecurityException e) {
            System.out.println("Should get an Exception in contains Integer cred");
        }



        HashSet coll = new HashSet();
        coll.add(new String("abc"));
        coll.add(new String("def"));
        coll.add(new String("Exists"));
        coll.add(new String("Does not Exist"));
        try {
        if (p3.containsAll(coll))
                throw new RuntimeException ("Error: Contains the collection");
        else
                System.out.println ("Does not Contain the collection");
        } catch (SecurityException e) {
                throw new RuntimeException("Error: Exception in containsAll (string coll)!!");

        }
        coll.remove(new String("Exists"));
        coll.remove(new String("Does not Exist"));
        try {
        if (p3.containsAll(coll))
                System.out.println ("Contains the collection");
        else
                throw new RuntimeException ("Error:Does not Contain the collection");
        } catch (SecurityException e) {
                throw new RuntimeException("Error: Exception in containsAll (string coll)!!");
        }

        Object Obj = new String("Exists");
        try {
        if (p3.contains(Obj))
                System.out.println ("Contains String cred exists");
        else
                System.out.println ("Does not Contain String cred exists");
        } catch (SecurityException e) {
                System.out.println("Exception in String cred!!");
        }

        Obj = new String("Does not exist");
        try {
        if (p3.contains(Obj))
                throw new RuntimeException ("Error: Contains the String does not exist");
        else
                System.out.println ("Does not Contain the String cred Does not exist");
        } catch (SecurityException e) {
                throw new RuntimeException("Error: Exception in Contains!!");
        }
        p3.add(new Integer(2));
        coll.add(new Integer(2));
        p3.add("XYZ");

        System.out.println ("Testing Retainall ");
        exceptionCounter =0;
        iter1 = p3.iterator();
        while (iter1.hasNext())
            {
                try {
                    Object o = iter1.next();
                    System.out.println(" private creds of class " +
                                       o.getClass() + "value is " + o.toString());
                } catch (SecurityException e) {
                    System.out.println(" We should get exception");
                    System.out.println("Exception!!");
                    exceptionCounter++;
                }
            }
        System.out.println(" After the retainall Operation");
        try {
            if (p3.retainAll(coll))
                System.out.println ("Retained the collection");
            else
                throw new RuntimeException ("Error: RetainAll did not succeed");
        } catch (SecurityException e) {
                e.printStackTrace();
                throw new RuntimeException("Error: Unexpected Exception in retainAll!");
        }
        iter1 = p3.iterator();
        while (iter1.hasNext())
            {
                try {
                    Object o = iter1.next();
                    System.out.println(" private creds of class " +
                                       o.getClass() + "value is " + o.toString());
                } catch (SecurityException e) {
                    exceptionCounter++;
                }
            }
        System.out.println ("Retainall collection");
        p3.add(new Integer (3));
        iter1 = p3.iterator();
        while (iter1.hasNext()) {
            try {
                Object o = iter1.next();
                System.out.println(" private creds of class " +
                                   o.getClass() + "value is " + o.toString());
            } catch (SecurityException e) {
                System.out.println("Should get Exception ");
            }
        }
        exceptionCounter=0;
        HashSet coll2 = new HashSet();
        coll2.add(new String("abc"));
        coll2.add(new Integer (3));
        System.out.println(" before removeall");
        iter1 = p3.iterator();
        exceptionCounter =0;
        while (iter1.hasNext()) {
            try {
                Object o = iter1.next();
                System.out.println(" private creds of class " +
                                   o.getClass() + "value is " + o.toString());
            } catch (SecurityException e) {
                System.out.println("Expected Exception thrown ");
                exceptionCounter++;
            }
        }
        // We added two integer creds so there must be two exceptions only

        if (exceptionCounter != 2) {
                throw new RuntimeException("Expected 2 Exceptions; received " +
                                   exceptionCounter + "exceptions ");
        }

        try {
        p3.removeAll(coll2);
        System.out.println(" removeall successful! ");
        } catch (SecurityException e) {
                throw new RuntimeException(" Error: removeAll Security Exception!!");
        }

        iter1 = p3.iterator();
        System.out.println(" After removeall");
        exceptionCounter = 0;
        while (iter1.hasNext()) {
            try {
                Object o = iter1.next();
                System.out.println (" private creds of class " +
                                   o.getClass() + "value is " + o.toString());
            } catch (SecurityException e) {
                System.out.println("Expected Exception thrown ");
                exceptionCounter++;
            }
        }
        // We had two integer creds; removed one as  a part of coll2; so
        // only one exception must have been thrown
        if (exceptionCounter != 1) {
                throw new RuntimeException("Expected 1 Exceptions; received " +
                                   exceptionCounter + "exceptions ");
        }
        try {
        p3.clear();
        System.out.println(" Clear() successful! ");
        } catch (SecurityException e) {
                throw new RuntimeException(" Error: Clear Security Exception!!");
        }


         /*   New subject s with creds and privCredSet
          *
          */
        creds.clear();
        creds.add("abc");
        creds.add("def");
        creds.add("ghi");
        creds.add(new Integer(1));
        Subject s =
            new Subject(false,  //readOnly
                        Collections.singleton(new SolarisPrincipal("user")),
                        Collections.EMPTY_SET,
                        creds);
        try {
           Set privCredSet = s.getPrivateCredentials(char.class);
           if (privCredSet.size() != 0) {
              throw new RuntimeException("Error:String Privcred size should have been 0 and was " +
                                 privCredSet.size());
            }

        } catch (Exception e) {
            throw new RuntimeException ("Error " + e.toString());
        }


        try {
           Set privCredSet = s.getPrivateCredentials(String.class);
           if (privCredSet.size() != 3) {
              throw new RuntimeException("Error:String Privcred size should have been 2 and was " +
                         privCredSet.size());
           }
           s.getPrivateCredentials().add("XYZ");
           /*
            * Since the privCredSet is not backed by internal private
            * creds adding to it should not make any difference to
            * privCredSet and theize should still be 3
            */

           if (privCredSet.size() != 3) {
              throw new RuntimeException("Error:String Privcred size should have been 2 and was " +
                         privCredSet.size());
           }
           s.getPrivateCredentials().remove("XYZ");
                /*
                 * Let us try to get the elements
                 * No exception should occur
                 */

           Iterator iter = privCredSet.iterator();
           while (iter.hasNext()) {
             try {
                Object o = iter.next();
                System.out.println(" private creds of class " +
                        o.getClass() + "value is " + o.toString());
             } catch (SecurityException e) {
             }
           }
        } catch (Exception e) {
                e.printStackTrace();
                throw new RuntimeException("Unexcpected Exception");
        }

        /*
         * Can we add and remove the creds
         */
        s.getPrivateCredentials().add("XYZ");
        s.getPrivateCredentials().remove("XYZ");
        s.getPrivateCredentials().add(new Integer(2));
        s.getPrivateCredentials().remove(new Integer(2));


        // We don't have permission to read Boolean creds
        // SInce the creds have no boolean creds we should get an empty
        // set
        try {
            Set privCredSet1 = s.getPrivateCredentials(Boolean.class);
            if (privCredSet1.size() != 0){
                  throw new RuntimeException("Error:String PrivcredSet1 of Boolean size should have been 0 and was " +
                         privCredSet1.size());
            }
        } catch (SecurityException e) {
                e.printStackTrace();
                throw new RuntimeException("Unexcpected Exception");
        }
        System.out.println ("Checked Boolean Creds ");

        /*
         * We don't have permission to read Integer creds
         * We should get an empty set even though the private creds
         * has an integer cred. No security exception either !
         */

        try {
            Set privCredSet1 = s.getPrivateCredentials(Integer.class);
            if (privCredSet1.size() != 0){
                  throw new RuntimeException("Error:String PrivcredSet1 of Integer size should have been 0 and was " +
                         privCredSet1.size());
            }
        } catch (SecurityException e) {
                System.out.println ("Expected exception");
        }
        System.out.println ("Checked Integer Creds ");

        Set privCredSet2 = s.getPrivateCredentials();

        if (privCredSet2.size() != 4){
              throw new RuntimeException("Error:String PrivcredSet1 size should have been 4 and was " +
                         privCredSet2.size());
        }

        /*
         * Since the returned privCredSet2 is internally backed by the
         * private creds, any additions to it should be reflected in
         * privcredSet2
         */
        s.getPrivateCredentials().add("XYZ");
        if (privCredSet2.size() != 5) {
              throw new RuntimeException("Error:String PrivcredSet1 size should have been 5 and was " +
                         privCredSet2.size());
        }
        s.getPrivateCredentials().remove("XYZ");
        if (privCredSet2.size() != 4) {
              throw new RuntimeException("String privCredSet2 size should have been  5 and was " +
                         privCredSet2.size());
        }
        System.out.println("Checked remove(String) operation");
        /* Let us add a couple of Boolean creds */
        s.getPrivateCredentials().add(Boolean.TRUE);
        s.getPrivateCredentials().add(new Integer(2));

        exceptionCounter =0;
        iter1 = privCredSet2.iterator();
        while (iter1.hasNext())
            {
                try {
                    Object o = iter1.next();
                    System.out.println(" private creds of class " +
                                       o.getClass() + "value is " + o.toString());
                } catch (SecurityException e) {
                    System.out.println(" We should get exception");
                    System.out.println("Exception!!");
                    exceptionCounter++;
                }
            }
        if (exceptionCounter != 3) {
            throw new RuntimeException("Expected number of exception was 3 " +
                        "The actual number was " + exceptionCounter);
        }
        privCredSet2.add (new Integer(3));
        try {
        int hashCode = privCredSet2.hashCode();
        } catch (SecurityException e) {
                System.out.println ("hashCode Expected exception");
        }
        System.out.println ("Tests completed");
    }

}

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