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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package javax.net.ssl;
import java.security.InvalidAlgorithmParameterException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.Provider;
import java.security.Security;
import org.apache.harmony.security.fortress.Engine;
/**
* The factory for {@code TrustManager}s based on {@code KeyStore} or provider
* specific implementation.
*/
public class TrustManagerFactory {
// Store TrustManager service name
private static final String SERVICE = "TrustManagerFactory";
// Used to access common engine functionality
private static final Engine ENGINE = new Engine(SERVICE);
// Store default property name
private static final String PROPERTY_NAME = "ssl.TrustManagerFactory.algorithm";
// Default value of TrustManagerFactory type.
private static final String DEFAULT_PROPERTY = "PKIX";
/**
* Returns the default algorithm name for the {@code TrustManagerFactory}. The
* default algorithm name is specified by the security property
* {@code 'ssl.TrustManagerFactory.algorithm'}.
*
* @return the default algorithm name.
*/
public static final String getDefaultAlgorithm() {
String algorithm = Security.getProperty(PROPERTY_NAME);
return (algorithm != null ? algorithm : DEFAULT_PROPERTY);
}
/**
* Creates a new {@code TrustManagerFactory} instance for the specified
* trust management algorithm.
*
* @param algorithm
* the name of the requested trust management algorithm.
* @return a trust manager factory for the requested algorithm.
* @throws NoSuchAlgorithmException
* if no installed provider can provide the requested algorithm.
* @throws NullPointerException
* if {@code algorithm} is {@code null} (instead of
* NoSuchAlgorithmException as in 1.4 release)
*/
public static final TrustManagerFactory getInstance(String algorithm)
throws NoSuchAlgorithmException {
if (algorithm == null) {
throw new NullPointerException("algorithm == null");
}
Engine.SpiAndProvider sap = ENGINE.getInstance(algorithm, null);
return new TrustManagerFactory((TrustManagerFactorySpi) sap.spi, sap.provider, algorithm);
}
/**
* Creates a new {@code TrustManagerFactory} instance for the specified
* trust management algorithm from the specified provider.
*
* @param algorithm
* the name of the requested trust management algorithm name.
* @param provider
* the name of the provider that provides the requested
* algorithm.
* @return a trust manager factory for the requested algorithm.
* @throws NoSuchAlgorithmException
* if the specified provider cannot provide the requested
* algorithm.
* @throws NoSuchProviderException
* if the specified provider does not exist.
* @throws NullPointerException
* if {@code algorithm} is {@code null} (instead of
* NoSuchAlgorithmException as in 1.4 release)
*/
public static final TrustManagerFactory getInstance(String algorithm, String provider)
throws NoSuchAlgorithmException, NoSuchProviderException {
if ((provider == null) || (provider.length() == 0)) {
throw new IllegalArgumentException("Provider is null or empty");
}
Provider impProvider = Security.getProvider(provider);
if (impProvider == null) {
throw new NoSuchProviderException(provider);
}
return getInstance(algorithm, impProvider);
}
/**
* Creates a new {@code TrustManagerFactory} instance for the specified
* trust management algorithm from the specified provider.
*
* @param algorithm
* the name of the requested key management algorithm name.
* @param provider
* the provider that provides the requested algorithm.
* @return a key manager factory for the requested algorithm.
* @throws NoSuchAlgorithmException
* if the specified provider cannot provide the requested
* algorithm.
* @throws NullPointerException
* if {@code algorithm} is {@code null} (instead of
* NoSuchAlgorithmException as in 1.4 release)
*/
public static final TrustManagerFactory getInstance(String algorithm, Provider provider)
throws NoSuchAlgorithmException {
if (provider == null) {
throw new IllegalArgumentException("Provider is null");
}
if (algorithm == null) {
throw new NullPointerException("algorithm == null");
}
Object spi = ENGINE.getInstance(algorithm, provider, null);
return new TrustManagerFactory((TrustManagerFactorySpi) spi, provider, algorithm);
}
// Store used provider
private final Provider provider;
// Store used TrustManagerFactorySpi implementation
private final TrustManagerFactorySpi spiImpl;
// Store used algorithm
private final String algorithm;
/**
* Creates a new {@code TrustManagerFactory} instance.
*
* @param factorySpi
* the implementation delegate.
* @param provider
* the provider
* @param algorithm
* the algorithm name.
*/
protected TrustManagerFactory(TrustManagerFactorySpi factorySpi, Provider provider,
String algorithm) {
this.provider = provider;
this.algorithm = algorithm;
this.spiImpl = factorySpi;
}
/**
* Returns the name of this {@code TrustManagerFactory} algorithm
* implementation.
*
* @return the name of this {@code TrustManagerFactory} algorithm
* implementation.
*/
public final String getAlgorithm() {
return algorithm;
}
/**
* Returns the provider for this {@code TrustManagerFactory} instance.
*
* @return the provider for this {@code TrustManagerFactory} instance.
*/
public final Provider getProvider() {
return provider;
}
/**
* Initializes this factory instance with the specified keystore as source
* of certificate authorities and trust material.
*
* @param ks
* the keystore or {@code null}.
* @throws KeyStoreException
* if the initialization fails.
*/
public final void init(KeyStore ks) throws KeyStoreException {
spiImpl.engineInit(ks);
}
/**
* Initializes this factory instance with the specified provider-specific
* parameters for a source of trust material.
*
* @param spec
* the provider-specific parameters.
* @throws InvalidAlgorithmParameterException
* if the initialization fails.
*/
public final void init(ManagerFactoryParameters spec)
throws InvalidAlgorithmParameterException {
spiImpl.engineInit(spec);
}
/**
* Returns the list of {@code TrustManager}s with one entry for each type
* of trust material.
*
* @return the list of {@code TrustManager}s
*/
public final TrustManager[] getTrustManagers() {
return spiImpl.engineGetTrustManagers();
}
}
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