File ant-CVE-2020-11979-2.patch of Package ant.26115
From 87ac51d3c22bcf7cfd0dc07cb0bd04a496e0d428 Mon Sep 17 00:00:00 2001
From: Stefan Bodewig <bodewig@apache.org>
Date: Sat, 4 Jul 2020 18:03:13 +0200
Subject: [PATCH] fallback to a separate owner-only tempdir if possible
---
src/main/org/apache/tools/ant/MagicNames.java | 10 +++
.../org/apache/tools/ant/util/FileUtils.java | 36 +++++++++--
.../apache/tools/ant/util/FileUtilsTest.java | 64 +++++++++++++++++++
3 files changed, 105 insertions(+), 5 deletions(-)
Index: apache-ant-1.9.4/src/main/org/apache/tools/ant/MagicNames.java
===================================================================
--- apache-ant-1.9.4.orig/src/main/org/apache/tools/ant/MagicNames.java
+++ apache-ant-1.9.4/src/main/org/apache/tools/ant/MagicNames.java
@@ -298,5 +298,16 @@ public final class MagicNames {
* @since Ant 1.9.15
*/
public static final String TMPDIR = "ant.tmpdir";
+
+
+ /**
+ * Magic property that will be set to override java.io.tmpdir
+ * system property as the location for Ant's default temporary
+ * directory if a temp file is created and {@link #TMPDIR} is not
+ * set.
+ * Value: {@value}
+ * @since Ant 1.10.9
+ */
+ public static final String AUTO_TMPDIR = "ant.auto.tmpdir";
}
Index: apache-ant-1.9.4/src/main/org/apache/tools/ant/util/FileUtils.java
===================================================================
--- apache-ant-1.9.4.orig/src/main/org/apache/tools/ant/util/FileUtils.java
+++ apache-ant-1.9.4/src/main/org/apache/tools/ant/util/FileUtils.java
@@ -104,6 +104,13 @@ public class FileUtils {
PosixFilePermissions.asFileAttribute(EnumSet.of(PosixFilePermission.OWNER_READ,
PosixFilePermission.OWNER_WRITE))
};
+
+ private static final FileAttribute[] TMPDIR_ATTRIBUTES =
+ new FileAttribute[] {
+ PosixFilePermissions.asFileAttribute(EnumSet.of(PosixFilePermission.OWNER_READ,
+ PosixFilePermission.OWNER_WRITE, PosixFilePermission.OWNER_EXECUTE))
+ };
+
private static final FileAttribute[] NO_TMPFILE_ATTRIBUTES = new FileAttribute[0];
@@ -979,14 +986,35 @@ public class FileUtils {
public File createTempFile(final Project project, String prefix, String suffix,
final File parentDir, final boolean deleteOnExit, final boolean createFile) {
File result = null;
- final String parent;
+ String p = null;
if (parentDir != null) {
- parent = parentDir.getPath();
+ p = parentDir.getPath();
} else if (project != null && project.getProperty(MagicNames.TMPDIR) != null) {
- parent = project.getProperty(MagicNames.TMPDIR);
- } else {
- parent = System.getProperty("java.io.tmpdir");
+ p = project.getProperty(MagicNames.TMPDIR);
+ } else if (project != null && deleteOnExit) {
+ if (project.getProperty(MagicNames.AUTO_TMPDIR) != null) {
+ p = project.getProperty(MagicNames.AUTO_TMPDIR);
+ } else {
+ final Path systemTempDirPath =
+ new File(System.getProperty("java.io.tmpdir")).toPath();
+ final PosixFileAttributeView systemTempDirPosixAttributes =
+ Files.getFileAttributeView(systemTempDirPath, PosixFileAttributeView.class);
+ if (systemTempDirPosixAttributes != null) {
+ // no reason to create an extra temp dir if we cannot set permissions
+ try {
+ final File projectTempDir = Files.createTempDirectory(systemTempDirPath,
+ "ant", TMPDIR_ATTRIBUTES)
+ .toFile();
+ projectTempDir.deleteOnExit();
+ p = projectTempDir.getAbsolutePath();
+ project.setProperty(MagicNames.AUTO_TMPDIR, p);
+ } catch (IOException ex) {
+ // silently fall back to system temp directory
+ }
+ }
+ }
}
+ final String parent = p != null ? p : System.getProperty("java.io.tmpdir");
if (prefix == null) {
prefix = NULL_PLACEHOLDER;
}
Index: apache-ant-1.9.4/src/tests/junit/org/apache/tools/ant/util/FileUtilsTest.java
===================================================================
--- apache-ant-1.9.4.orig/src/tests/junit/org/apache/tools/ant/util/FileUtilsTest.java
+++ apache-ant-1.9.4/src/tests/junit/org/apache/tools/ant/util/FileUtilsTest.java
@@ -28,6 +28,8 @@ import org.apache.tools.ant.taskdefs.con
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
+import org.junit.Rule;
+import org.junit.rules.TemporaryFolder;
import java.util.Set;
import java.nio.file.Files;
@@ -35,11 +37,17 @@ import java.nio.file.Path;
import java.nio.file.attribute.PosixFileAttributeView;
import java.nio.file.attribute.PosixFilePermission;
+import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.junit.Assume.assumeTrue;
+import static org.junit.Assume.assumeFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+
+import static org.apache.tools.ant.util.FileUtils.getFileUtils;
/**
* Tests for org.apache.tools.ant.util.FileUtils.
@@ -51,6 +59,8 @@ public class FileUtilsTest {
private File removeThis;
private String root;
+ @Rule
+ public TemporaryFolder folder = new TemporaryFolder();
@Before
public void setUp() {
@@ -349,7 +359,7 @@ public class FileUtilsTest {
* Test createTempFile
*/
@Test
- public void testCreateTempFile()
+ public void testCreateTempFile() throws IOException
{
final String tmploc = System.getProperty("java.io.tmpdir");
final Project projectWithoutTempDir = new Project();
@@ -443,6 +453,68 @@ public class FileUtilsTest {
tmp2.getAbsolutePath()));
}
+ @Test
+ public void createTempFileUsesAntTmpDirIfSetAndDeleteOnExitIsTrue() throws IOException {
+ final Project project = new Project();
+ final File projectTmpDir = folder.newFolder("subdir");
+ project.setProperty("ant.tmpdir", projectTmpDir.getAbsolutePath());
+ final File tmpFile = getFileUtils().createTempFile(project, null, null, null, true, true);
+ assertTrue(tmpFile + " must be child of " + projectTmpDir,
+ tmpFile.getAbsolutePath().startsWith(projectTmpDir.getAbsolutePath()));
+ }
+
+ @Test
+ public void createTempFileUsesAntTmpDirIfSetAndDeleteOnExitIsFalse() throws IOException {
+ final Project project = new Project();
+ final File projectTmpDir = folder.newFolder("subdir");
+ project.setProperty("ant.tmpdir", projectTmpDir.getAbsolutePath());
+ final File tmpFile = getFileUtils().createTempFile(project, null, null, null, false, true);
+ assertTrue(tmpFile + " must be child of " + projectTmpDir,
+ tmpFile.getAbsolutePath().startsWith(projectTmpDir.getAbsolutePath()));
+ }
+
+ @Test
+ public void createTempFileCreatesAutoTmpDirIfDeleteOnExitIsTrueOnUnix() throws IOException {
+ assumeFalse("Test doesn't run on DOS", Os.isFamily("dos"));
+ final Project project = new Project();
+ final File tmpFile = getFileUtils().createTempFile(project, null, null, null, true, true);
+ final String autoTempDir = project.getProperty("ant.auto.tmpdir");
+ assertNotNull(autoTempDir);
+ assertTrue(tmpFile + " must be child of " + autoTempDir,
+ tmpFile.getAbsolutePath().startsWith(autoTempDir));
+ }
+
+ @Test
+ public void createTempFileDoesntCreateAutoTmpDirIfDeleteOnExitIsFalse() throws IOException {
+ final Project project = new Project();
+ final File tmpFile = getFileUtils().createTempFile(project, null, null, null, false, true);
+ assertNull(project.getProperty("ant.auto.tmpdir"));
+ }
+
+ @Test
+ public void createTempFileReusesAutoTmpDirIfDeleteOnExitIsTrueOnUnix() throws IOException {
+ assumeFalse("Test doesn't run on DOS", Os.isFamily("dos"));
+ final Project project = new Project();
+ final File tmpFile = getFileUtils().createTempFile(project, null, null, null, true, true);
+ final String autoTempDir = project.getProperty("ant.auto.tmpdir");
+ assertNotNull(autoTempDir);
+ final File tmpFile2 = getFileUtils().createTempFile(project, null, null, null, true, true);
+ assertTrue(tmpFile2 + " must be child of " + autoTempDir,
+ tmpFile2.getAbsolutePath().startsWith(autoTempDir));
+ }
+
+ @Test
+ public void createTempFileDoesntReusesAutoTmpDirIfDeleteOnExitIsFalse() throws IOException {
+ assumeFalse("Test doesn't run on DOS", Os.isFamily("dos"));
+ final Project project = new Project();
+ final File tmpFile = getFileUtils().createTempFile(project, null, null, null, true, true);
+ final String autoTempDir = project.getProperty("ant.auto.tmpdir");
+ assertNotNull(autoTempDir);
+ final File tmpFile2 = getFileUtils().createTempFile(project, null, null, null, false, true);
+ assertFalse(tmpFile2 + " must not be child of " + autoTempDir,
+ tmpFile2.getAbsolutePath().startsWith(autoTempDir));
+ }
+
/**
* Test contentEquals
*/
