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* derived from this software without specific prior written permission.*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED *
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/**
* $Id: SecurityAction.java,v 1.2 2006/04/18 11:35:28 cvs Exp $
*/
package java.security;
import wonka.security.DefaultProvider;
class SecurityAction implements PrivilegedAction {
private final static Provider defaultProvider = DefaultProvider.getInstance();
static ClassLoader getClassLoader(Provider prov){
return (ClassLoader)AccessController.doPrivileged(new SecurityAction(prov));
}
Provider provider;
Object spi;
private SecurityAction(Provider prov){
provider = prov;
}
SecurityAction(String algorithm, String type) throws NoSuchAlgorithmException {
Provider[] p = Security.getProviders();
String propName = type+algorithm;
String aliasName = "Alg.Alias." + propName;
for (int i=0 ; i < p.length ; i++){
provider = p[i];
String classname = provider.getProperty(propName);
if (classname != null){
try {
spi = Class.forName(classname, true, (ClassLoader)AccessController.doPrivileged(this)).newInstance();
return;
}catch(Exception e){}
}
classname = getAliasName(aliasName, type);
if (classname != null){
try {
spi = Class.forName(classname, true, (ClassLoader)AccessController.doPrivileged(this)).newInstance();
return;
}catch(Exception e){}
}
}
throw new NoSuchAlgorithmException("couldn't find "+algorithm+" of type "+type);
}
SecurityAction(String algorithm, String providerName, String type) throws NoSuchAlgorithmException, NoSuchProviderException {
provider = Security.getProvider(providerName);
if (provider == null){
throw new NoSuchProviderException("couldn't find "+provider);
}
String propName = type+algorithm;
String classname = provider.getProperty(propName);
if (classname != null){
try {
spi = Class.forName(classname, true, (ClassLoader)AccessController.doPrivileged(this)).newInstance();
return;
}catch(Exception e){}
}
classname = getAliasName("Alg.Alias." + propName, type);
if (classname != null){
try {
spi = Class.forName(classname, true, (ClassLoader)AccessController.doPrivileged(this)).newInstance();
return;
}catch(Exception e){}
}
throw new NoSuchAlgorithmException("couldn't find "+algorithm+" of type "+type);
}
SecurityAction(String algorithm, Provider provider, String type) throws NoSuchAlgorithmException {
this.provider = provider;
String propName = type+algorithm;
String classname = provider.getProperty(propName);
if (classname != null){
try {
spi = Class.forName(classname, true, (ClassLoader)AccessController.doPrivileged(this)).newInstance();
return;
}catch(Exception e){}
}
classname = getAliasName("Alg.Alias." + propName, type);
if (classname != null){
try {
spi = Class.forName(classname, true, (ClassLoader)AccessController.doPrivileged(this)).newInstance();
return;
}catch(Exception e){}
}
throw new NoSuchAlgorithmException("couldn't find "+algorithm+" of type "+type);
}
public Object run(){
return provider.getClass().getClassLoader();
}
private String getAliasName(String aliasName, String type){
String alias = provider.getProperty(aliasName);
String classname = null;
if(alias != null){
classname = defaultProvider.getProperty(type+alias);
}
if(classname == null){
classname = provider.getProperty(type+alias);
}
return classname;
}
}