package org.jboss.as.appclient.service;
import java.io.IOException;
import java.security.PrivilegedAction;
import java.util.Set;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.sasl.RealmCallback;
import org.jboss.security.SecurityContext;
import org.jboss.security.SecurityContextAssociation;
import org.jboss.security.identity.Identity;
import org.jboss.security.identity.extensions.CredentialIdentity;
import static java.security.AccessController.doPrivileged;
/**
* The default callback handler used by the
*
* @author Stuart Douglas
*/
public class DefaultApplicationClientCallbackHandler implements CallbackHandler {
public static final String DOLLAR_LOCAL = "$local";
@Override
public void handle(final Callback[] callbacks) throws IOException, UnsupportedCallbackException {
final SecurityContext context = doPrivileged(securityContext());
for (final Callback current : callbacks) {
if (current instanceof NameCallback) {
final NameCallback ncb = (NameCallback) current;
if (context != null) {
final Set<Identity> identities = context.getSubjectInfo().getIdentities();
if (identities.isEmpty()) {
ncb.setName(DOLLAR_LOCAL);
} else {
final Identity identity = identities.iterator().next();
ncb.setName(identity.getName());
}
} else {
ncb.setName(DOLLAR_LOCAL);
}
} else if (current instanceof PasswordCallback) {
if (context != null) {
final PasswordCallback pcb = (PasswordCallback) current;
final Set<Identity> identities = context.getSubjectInfo().getIdentities();
if (identities.isEmpty()) {
throw new UnsupportedCallbackException(current);
} else {
final Identity identity = identities.iterator().next();
if (identity instanceof CredentialIdentity) {
pcb.setPassword((char[]) ((CredentialIdentity) identity).getCredential());
} else {
throw new UnsupportedCallbackException(current);
}
}
}
} else if (current instanceof RealmCallback) {
final RealmCallback realmCallback = (RealmCallback) current;
if (realmCallback.getText() == null) {
realmCallback.setText(realmCallback.getDefaultText());
}
}
}
}
private static PrivilegedAction<SecurityContext> securityContext() {
return new PrivilegedAction<SecurityContext>() {
public SecurityContext run() {
return SecurityContextAssociation.getSecurityContext();
}
};
}
}