certstore.java

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	    throw nsae;
	} catch (InvocationTargetException ite) {
            Throwable t = ite.getCause();
            if (t != null) {
	        if (t instanceof InvalidAlgorithmParameterException)
	            throw (InvalidAlgorithmParameterException)t;
	        if (t instanceof NoSuchAlgorithmException)
	            throw (NoSuchAlgorithmException)t;
            }
	    NoSuchAlgorithmException nsae = new
	        NoSuchAlgorithmException(type + " not found");
	    nsae.initCause(ite);
	    throw nsae;
	}
    }

    /**
     * Returns a <code>CertStore</code> object that implements the specified
     * <code>CertStore</code> type, as supplied by the specified provider
     * and initialized with the specified parameters.
     *
     * <p>The <code>CertStore</code> that is returned is initialized with the 
     * specified <code>CertStoreParameters</code>. The type of parameters 
     * needed may vary between different types of <code>CertStore</code>s.
     * Note that the specified <code>CertStoreParameters</code> object is 
     * cloned.
     *
     * @param type the requested <code>CertStore</code> type
     * @param params the initialization parameters (may be <code>null</code>)
     * @param provider the name of the provider
     * @return a <code>CertStore</code> object that implements the
     * specified type, as supplied by the specified provider
     * @throws NoSuchAlgorithmException if the requested type is not
     *  available from the specified provider
     * @throws InvalidAlgorithmParameterException if the specified
     * initialization parameters are inappropriate for this 
     * <code>CertStore</code>
     * @throws NoSuchProviderException if the provider has not been configured
     * @exception IllegalArgumentException if the <code>provider</code> is
     * null
     */
    public static CertStore getInstance(String type, 
	CertStoreParameters params, String provider)
        throws InvalidAlgorithmParameterException, NoSuchAlgorithmException, 
	       NoSuchProviderException 
    {
	if (provider == null || provider.length() == 0)
	    throw new IllegalArgumentException("missing provider");
	try {
	    if (implMethod == null) {
		throw new NoSuchAlgorithmException(type + " not found");
	    }

	    // The underlying method is static, so we set the object
	    // argument to null.
	    Object[] objs = (Object[])implMethod.invoke(null,
					       new Object[]
					       { type,
						 "CertStore",
						 provider,
						 params
					       } );
	    return new CertStore((CertStoreSpi)objs[0],
				 (Provider)objs[1], type, params);
	} catch (IllegalAccessException iae) {
	    NoSuchAlgorithmException nsae = new
	                   NoSuchAlgorithmException(type + " not found");
	    nsae.initCause(iae);
	    throw nsae;
	} catch (InvocationTargetException ite) {
            Throwable t = ite.getCause();
            if (t != null) {
                if (t instanceof NoSuchProviderException)
	            throw (NoSuchProviderException)t;
	        if (t instanceof InvalidAlgorithmParameterException)
	            throw (InvalidAlgorithmParameterException)t;
	        if (t instanceof NoSuchAlgorithmException)
	            throw (NoSuchAlgorithmException)t;
            }
	    NoSuchAlgorithmException nsae = new
	        NoSuchAlgorithmException(type + " not found");
	    nsae.initCause(ite);
	    throw nsae;
        }
    }

    /**
     * Returns a <code>CertStore</code> object that implements the specified
     * <code>CertStore</code> type, as supplied by the specified provider and
     * initialized with the specified parameters.
     * Note: the <code>provider</code> doesn't have to be registered.
     *
     * <p>The <code>CertStore</code> that is returned is initialized with the 
     * specified <code>CertStoreParameters</code>. The type of parameters 
     * needed may vary between different types of <code>CertStore</code>s.
     * Note that the specified <code>CertStoreParameters</code> object is 
     * cloned.
     *
     * @param type the requested <code>CertStore</code> type
     * @param params the initialization parameters (may be <code>null</code>)
     * @param provider the provider
     * @return a <code>CertStore</code> object that implements the
     * specified type, as supplied by the specified provider
     * @exception NoSuchAlgorithmException if the requested type is not
     *  available from the specified provider
     * @throws InvalidAlgorithmParameterException if the specified
     * initialization parameters are inappropriate for this 
     * <code>CertStore</code>
     * @exception IllegalArgumentException if the <code>provider</code> is
     * null 
     */
    public static CertStore getInstance(String type, CertStoreParameters params,
	Provider provider) 
        throws NoSuchAlgorithmException, InvalidAlgorithmParameterException
    {
	if (provider == null)
	    throw new IllegalArgumentException("missing provider");

	if (implMethod2Set.booleanValue() == false) {
	    synchronized (implMethod2Set) {
		if (implMethod2Set.booleanValue() == false) {
		    implMethod2 = (Method)
			AccessController.doPrivileged(
					   new PrivilegedAction() {
			    public Object run() {
				Method m = null;
				try {
				    m = cl.getDeclaredMethod("getImpl",
							     GET_IMPL_PARAMS2);
				    if (m != null)
					m.setAccessible(true);
				} catch (NoSuchMethodException nsme) {
				}
				return m;
			    }
			});
		    implMethod2Set = new Boolean(true);
		}		
	    }
	}

	if (implMethod2 == null) {
	    throw new NoSuchAlgorithmException(type + " not found");
	}

	try {
	    // The underlying method is static, so we set the object
	    // argument to null.
	    Object[] objs = (Object[])implMethod2.invoke(null,
					       new Object[]
					       { type,
						 "CertStore",
						 provider,
						 params
					       } );
	    return new CertStore((CertStoreSpi)objs[0],
				 (Provider)objs[1], type, params);
	} catch (IllegalAccessException iae) {
	    NoSuchAlgorithmException nsae = new
	                   NoSuchAlgorithmException(type + " not found");
	    nsae.initCause(iae);
	    throw nsae;
	} catch (InvocationTargetException ite) {
            Throwable t = ite.getCause();
            if (t != null) {
	        if (t instanceof InvalidAlgorithmParameterException)
	            throw (InvalidAlgorithmParameterException)t;
	        if (t instanceof NoSuchAlgorithmException)
	            throw (NoSuchAlgorithmException)t;
            }
	    NoSuchAlgorithmException nsae = new
	        NoSuchAlgorithmException(type + " not found");
	    nsae.initCause(ite);
	    throw nsae;
	}
    }

    /**
     * Returns the parameters used to initialize this <code>CertStore</code>.
     * Note that the <code>CertStoreParameters</code> object is cloned before 
     * it is returned.
     *
     * @return the parameters used to initialize this <code>CertStore</code>
     * (may be <code>null</code>)
     */
    public final CertStoreParameters getCertStoreParameters() {
        return (params == null ? null : (CertStoreParameters) params.clone());
    }

    /**
     * Returns the type of this <code>CertStore</code>.
     *
     * @return the type of this <code>CertStore</code>
     */
    public final String getType() {
        return this.type;
    }

    /**
     * Returns the provider of this <code>CertStore</code>.
     *
     * @return the provider of this <code>CertStore</code>
     */
    public final Provider getProvider() {
        return this.provider;
    }

    /**
     * Returns the default <code>CertStore</code> type as specified in the 
     * Java security properties file, or the string &quot;LDAP&quot; if no 
     * such property exists. The Java security properties file is located in 
     * the file named &lt;JAVA_HOME&gt;/lib/security/java.security, where 
     * &lt;JAVA_HOME&gt; refers to the directory where the SDK was installed.
     *
     * <p>The default <code>CertStore</code> type can be used by applications 
     * that do not want to use a hard-coded type when calling one of the
     * <code>getInstance</code> methods, and want to provide a default 
     * <code>CertStore</code> type in case a user does not specify its own.
     *
     * <p>The default <code>CertStore</code> type can be changed by setting 
     * the value of the "certstore.type" security property (in the Java 
     * security properties file) to the desired type.
     *
     * @return the default <code>CertStore</code> type as specified in the
     * Java security properties file, or the string &quot;LDAP&quot;
     * if no such property exists.
     */
    public final static String getDefaultType() {
        String cstype;
        cstype = (String)AccessController.doPrivileged(new PrivilegedAction() {
            public Object run() {
                return Security.getProperty(CERTSTORE_TYPE);
            }
        });
        if (cstype == null) {
            cstype = "LDAP";
        }
        return cstype;
    }
}