TemporaryFiles.java revision 3661:b7e763a573a4
1/* 2 * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* @test 25 * @bug 4313887 6838333 7006126 7023034 26 * @summary Unit test for Files.createTempXXX 27 * @library .. 28 */ 29 30import java.nio.file.*; 31import static java.nio.file.StandardOpenOption.*; 32import java.nio.file.attribute.*; 33import java.io.IOException; 34import java.util.Set; 35 36public class TemporaryFiles { 37 38 static void checkInDirectory(Path file, Path dir) { 39 if (dir == null) 40 dir = Paths.get(System.getProperty("java.io.tmpdir")); 41 if (!file.getParent().equals(dir)) 42 throw new RuntimeException("Not in expected directory"); 43 } 44 45 static void testTempFile(String prefix, String suffix, Path dir) 46 throws IOException 47 { 48 Path file = (dir == null) ? 49 Files.createTempFile(prefix, suffix) : 50 Files.createTempFile(dir, prefix, suffix); 51 try { 52 // check file name 53 String name = file.getFileName().toString(); 54 if (prefix != null && !name.startsWith(prefix)) 55 throw new RuntimeException("Should start with " + prefix); 56 if (suffix == null && !name.endsWith(".tmp")) 57 throw new RuntimeException("Should end with .tmp"); 58 if (suffix != null && !name.endsWith(suffix)) 59 throw new RuntimeException("Should end with " + suffix); 60 61 // check file is in expected directory 62 checkInDirectory(file, dir); 63 64 // check that file can be opened for reading and writing 65 Files.newByteChannel(file, READ).close(); 66 Files.newByteChannel(file, WRITE).close(); 67 Files.newByteChannel(file, READ,WRITE).close(); 68 69 // check file permissions are 0600 or more secure 70 if (Files.getFileStore(file).supportsFileAttributeView("posix")) { 71 Set<PosixFilePermission> perms = Files.getPosixFilePermissions(file); 72 perms.remove(PosixFilePermission.OWNER_READ); 73 perms.remove(PosixFilePermission.OWNER_WRITE); 74 if (!perms.isEmpty()) 75 throw new RuntimeException("Temporary file is not secure"); 76 } 77 } finally { 78 Files.delete(file); 79 } 80 } 81 82 static void testTempFile(String prefix, String suffix) 83 throws IOException 84 { 85 testTempFile(prefix, suffix, null); 86 } 87 88 static void testTempDirectory(String prefix, Path dir) throws IOException { 89 Path subdir = (dir == null) ? 90 Files.createTempDirectory(prefix) : 91 Files.createTempDirectory(dir, prefix); 92 try { 93 // check file name 94 String name = subdir.getFileName().toString(); 95 if (prefix != null && !name.startsWith(prefix)) 96 throw new RuntimeException("Should start with " + prefix); 97 98 // check directory is in expected directory 99 checkInDirectory(subdir, dir); 100 101 // check directory is empty 102 DirectoryStream<Path> stream = Files.newDirectoryStream(subdir); 103 try { 104 if (stream.iterator().hasNext()) 105 throw new RuntimeException("Tempory directory not empty"); 106 } finally { 107 stream.close(); 108 } 109 110 // check that we can create file in directory 111 Path file = Files.createFile(subdir.resolve("foo")); 112 try { 113 Files.newByteChannel(file, READ,WRITE).close(); 114 } finally { 115 Files.delete(file); 116 } 117 118 // check file permissions are 0700 or more secure 119 if (Files.getFileStore(subdir).supportsFileAttributeView("posix")) { 120 Set<PosixFilePermission> perms = Files.getPosixFilePermissions(subdir); 121 perms.remove(PosixFilePermission.OWNER_READ); 122 perms.remove(PosixFilePermission.OWNER_WRITE); 123 perms.remove(PosixFilePermission.OWNER_EXECUTE); 124 if (!perms.isEmpty()) 125 throw new RuntimeException("Temporary directory is not secure"); 126 } 127 } finally { 128 Files.delete(subdir); 129 } 130 } 131 132 static void testTempDirectory(String prefix) throws IOException { 133 testTempDirectory(prefix, null); 134 } 135 136 static void testInvalidFileTemp(String prefix, String suffix) throws IOException { 137 try { 138 Path file = Files.createTempFile(prefix, suffix); 139 Files.delete(file); 140 throw new RuntimeException("IllegalArgumentException expected"); 141 } catch (IllegalArgumentException expected) { } 142 } 143 144 public static void main(String[] args) throws IOException { 145 // temporary-file directory 146 testTempFile("blah", ".dat"); 147 testTempFile("blah", null); 148 testTempFile(null, ".dat"); 149 testTempFile(null, null); 150 testTempDirectory("blah"); 151 testTempDirectory(null); 152 153 // a given directory 154 Path dir = Files.createTempDirectory("tmpdir"); 155 try { 156 testTempFile("blah", ".dat", dir); 157 testTempFile("blah", null, dir); 158 testTempFile(null, ".dat", dir); 159 testTempFile(null, null, dir); 160 testTempDirectory("blah", dir); 161 testTempDirectory(null, dir); 162 } finally { 163 Files.delete(dir); 164 } 165 166 // invalid prefix and suffix 167 testInvalidFileTemp("../blah", null); 168 testInvalidFileTemp("dir/blah", null); 169 testInvalidFileTemp("blah", ".dat/foo"); 170 171 // nulls 172 try { 173 Files.createTempFile("blah", ".tmp", (FileAttribute<?>[])null); 174 throw new RuntimeException("NullPointerException expected"); 175 } catch (NullPointerException ignore) { } 176 try { 177 Files.createTempFile("blah", ".tmp", new FileAttribute<?>[] { null }); 178 throw new RuntimeException("NullPointerException expected"); 179 } catch (NullPointerException ignore) { } 180 try { 181 Files.createTempDirectory("blah", (FileAttribute<?>[])null); 182 throw new RuntimeException("NullPointerException expected"); 183 } catch (NullPointerException ignore) { } 184 try { 185 Files.createTempDirectory("blah", new FileAttribute<?>[] { null }); 186 throw new RuntimeException("NullPointerException expected"); 187 } catch (NullPointerException ignore) { } 188 try { 189 Files.createTempFile((Path)null, "blah", ".tmp"); 190 throw new RuntimeException("NullPointerException expected"); 191 } catch (NullPointerException ignore) { } 192 try { 193 Files.createTempDirectory((Path)null, "blah"); 194 throw new RuntimeException("NullPointerException expected"); 195 } catch (NullPointerException ignore) { } 196 } 197} 198