1 /**
2 * This file Copyright (c) 2011-2018 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.setup;
35
36 import info.magnolia.module.InstallContext;
37 import info.magnolia.module.delta.AbstractCondition;
38
39 import java.io.File;
40 import java.io.IOException;
41
42 /**
43 * A {@link info.magnolia.module.delta.Condition} which checks the system temporary folder (as per the java.io.tmpdir property) exists and is writable.
44 * It can happen that users accidentally delete the temp folder, which can cause all sorts of trouble. (JackRabbit uses it while importing files, for example)
45 */
46 public class SystemTmpDirCondition extends AbstractCondition {
47 private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(SystemTmpDirCondition.class);
48
49 public SystemTmpDirCondition() {
50 super("System temporary folder check", "Ensures the system temporary folder exists and is usable by the current process.");
51 }
52
53 @Override
54 public boolean check(InstallContext installContext) {
55 try {
56 final File f = File.createTempFile("magnolia.core.check", "tmp");
57 log.debug("Temp file was successfully created as {}, we can delete it and proceed.", f.getAbsolutePath());
58 f.delete();
59 return true;
60 } catch (IOException e) {
61 final String tmpDirProperty = System.getProperty("java.io.tmpdir");
62 log.error("The system could not create a temporary file: {}. Please check if {} exists and is writable by the current process. {}", e.getMessage(), tmpDirProperty, e);
63 installContext.error("The system could not create a temporary file: " + e.getMessage() + ". Please check if " + tmpDirProperty + " exists and is writable by the current process.", e);
64 return false;
65 }
66
67 }
68 }