| /* |
| * 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 org.apache.guacamole.auth.cas.conf; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.lang.IllegalArgumentException; |
| import java.security.InvalidKeyException; |
| import java.security.KeyFactory; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.PrivateKey; |
| import java.security.spec.InvalidKeySpecException; |
| import java.security.spec.KeySpec; |
| import java.security.spec.PKCS8EncodedKeySpec; |
| import org.apache.guacamole.properties.GuacamoleProperty; |
| import org.apache.guacamole.GuacamoleServerException; |
| import org.apache.guacamole.environment.Environment; |
| import org.apache.guacamole.environment.LocalEnvironment; |
| |
| /** |
| * A GuacamoleProperty whose value is derived from a private key file. |
| */ |
| public abstract class PrivateKeyGuacamoleProperty implements GuacamoleProperty<PrivateKey> { |
| |
| @Override |
| public PrivateKey parseValue(String value) throws GuacamoleServerException { |
| |
| if (value == null || value.isEmpty()) |
| return null; |
| |
| FileInputStream keyStreamIn = null; |
| |
| try { |
| try { |
| |
| // Open and read the file specified in the configuration. |
| File keyFile = new File(value); |
| keyStreamIn = new FileInputStream(keyFile); |
| ByteArrayOutputStream keyStreamOut = new ByteArrayOutputStream(); |
| byte[] keyBuffer = new byte[1024]; |
| |
| for (int readBytes; (readBytes = keyStreamIn.read(keyBuffer)) != -1;) |
| keyStreamOut.write(keyBuffer, 0, readBytes); |
| |
| final byte[] keyBytes = keyStreamOut.toByteArray(); |
| |
| // Set up decryption infrastructure |
| KeyFactory keyFactory = KeyFactory.getInstance("RSA"); |
| KeySpec keySpec = new PKCS8EncodedKeySpec(keyBytes); |
| return keyFactory.generatePrivate(keySpec); |
| |
| } |
| catch (FileNotFoundException e) { |
| throw new GuacamoleServerException("Could not find the specified key file.", e); |
| } |
| catch (NoSuchAlgorithmException e) { |
| throw new GuacamoleServerException("RSA algorithm is not available.", e); |
| } |
| catch (InvalidKeySpecException e) { |
| throw new GuacamoleServerException("Key is not in expected PKCS8 encoding.", e); |
| } |
| finally { |
| if (keyStreamIn != null) |
| keyStreamIn.close(); |
| } |
| } |
| catch (IOException e) { |
| throw new GuacamoleServerException("Could not read in the specified key file.", e); |
| } |
| } |
| |
| } |