RemoveProvider.java revision 2362
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2N/A * version 2 for more details (a copy is included in the LICENSE file that
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2N/A
2N/A/*
2N/A * @test
2N/A * @bug 4190873
2N/A * @summary Make sure provider instance can be removed from list of registered
2N/A * providers, and "entrySet", "keySet", and "values" methods don't loop
2N/A * indefinitely.
2N/A */
import java.security.*;
import java.util.*;
public class RemoveProvider {
public static void main(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, double version, String info) {
super(name, version, info);
put("Signature", name+".signature");
put("Digest", name+".digest");
}
}