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/*
* Copyright (c) 1998, 2025, 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
* @bug 4190873 7054918 8130181
* @library /test/lib
* @summary Make sure provider instance can be removed from list of registered
* providers, and "entrySet", "keySet", and "values" methods don't loop
* indefinitely.
*/
import java.security.*;
import java.util.*;
import jdk.test.lib.security.ProvidersSnapshot;
public class RemoveProvider {
public static void main(String[] args) throws Exception {
ProvidersSnapshot snapshot = ProvidersSnapshot.create();
try {
main0(args);
} finally {
snapshot.restore();
}
}
public static void main0(String[] args) throws Exception {
// Add provider 1
Provider p1 = new MyProvider("name1","1","");
Security.addProvider(p1);
// Add provider 2
Provider p2 = new MyProvider("name2","1","");
Security.addProvider(p2);
// List all providers
System.out.println("// List all providers");
Provider[] provs = Security.getProviders();
for (int i=0; i<provs.length; i++)
System.out.println(provs[i].toString());
// Remove one provider and list all remaining providers
System.out.println("");
System.out.println("// Remove one provider");
Security.removeProvider("name1");
provs = Security.getProviders();
for (int i=0; i<provs.length; i++)
System.out.println(provs[i].toString());
// Iterate over the entrySet
System.out.println("");
System.out.println("// Iterate over entrySet");
Map.Entry me = null;
Set es = p1.entrySet();
Iterator i = es.iterator();
while (i.hasNext()) {
me = (Map.Entry)i.next();
System.out.println("Key: " + (String)me.getKey());
System.out.println("Value: " + (String)me.getValue());
}
// Try to modify the backing Map, and catch the expected exception
try {
me.setValue("name1.mac");
throw new Exception("Expected exception not thrown");
} catch (UnsupportedOperationException uoe) {
System.out.println("Expected exception caught");
}
// Iterate over the keySet, and try to remove one (should fail)
System.out.println("");
System.out.println("// Iterate over keySet");
Object o = null;
Set ks = p1.keySet();
i = ks.iterator();
while (i.hasNext()) {
o = i.next();
System.out.println((String)o);
}
try {
ks.remove(o);
throw new Exception("Expected exception not thrown");
} catch (UnsupportedOperationException uoe) {
}
// Iterate over the map values
System.out.println("");
System.out.println("// Iterate over values");
Collection c = p1.values();
i = c.iterator();
while (i.hasNext()) {
System.out.println((String)i.next());
}
// Modify provider and make sure changes are reflected in
// existing entrySet (i.e., make sure entrySet is "live").
// First, add entry to provider.
System.out.println("");
System.out.println("// Add 'Cipher' entry to provider");
p1.put("Cipher", "name1.des");
// entrySet
i = es.iterator();
boolean found = false;
while (i.hasNext()) {
me = (Map.Entry)i.next();
System.out.println("Key: " + (String)me.getKey());
System.out.println("Value: " + (String)me.getValue());
if (((String)me.getKey()).equals("Cipher"))
found = true;
}
if (!found)
throw new Exception("EntrySet not live");
// keySet
i = ks.iterator();
while (i.hasNext()) {
o = i.next();
System.out.println((String)o);
}
// collection
i = c.iterator();
while (i.hasNext()) {
System.out.println((String)i.next());
}
// Remove entry from provider
System.out.println("");
System.out.println("// Remove 'Digest' entry from provider");
p1.remove("Digest");
// entrySet
i = es.iterator();
while (i.hasNext()) {
me = (Map.Entry)i.next();
System.out.println("Key: " + (String)me.getKey());
System.out.println("Value: " + (String)me.getValue());
}
// keySet
i = ks.iterator();
while (i.hasNext()) {
o = i.next();
System.out.println((String)o);
}
// collection
i = c.iterator();
while (i.hasNext()) {
System.out.println((String)i.next());
}
// Retrieve new entrySet and make sure the backing Map cannot be
// mofified
es = p1.entrySet();
i = es.iterator();
while (i.hasNext()) {
me = (Map.Entry)i.next();
System.out.println("Key: " + (String)me.getKey());
System.out.println("Value: " + (String)me.getValue());
}
try {
me.setValue("name1.mac");
throw new Exception("Expected exception not thrown");
} catch (UnsupportedOperationException uoe) {
System.out.println("Expected exception caught");
}
}
}
class MyProvider extends Provider {
public MyProvider(String name, String version, String info) {
super(name, version, info);
put("Signature", name+".signature");
put("Digest", name+".digest");
}
}
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