01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: *
17: */
18: package org.apache.tools.ant.util.optional;
19:
20: import java.security.Permission;
21: import org.apache.tools.ant.ExitException;
22:
23: /**
24: * This is intended as a replacement for the default system manager.
25: * The goal is to intercept System.exit calls and make it throw an
26: * exception instead so that a System.exit in a task does not
27: * fully terminate Ant.
28: *
29: * @see ExitException
30: */
31: public class NoExitSecurityManager extends SecurityManager {
32:
33: /**
34: * Override SecurityManager#checkExit.
35: * This throws an ExitException(status) exception.
36: * @param status the exit status
37: */
38: public void checkExit(int status) {
39: throw new ExitException(status);
40: }
41:
42: /**
43: * Override SecurityManager#checkPermission.
44: * This does nothing.
45: * @param perm the requested permission.
46: */
47: public void checkPermission(Permission perm) {
48: // no permission here
49: }
50: }
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