fix: use temp dir env var only in apps

jadx-cli/src/main/java/jadx/cli/JadxCLI.java

@@ -16,7 +16,6 @@ import jadx.cli.LogHelper.LogLevelEnum;
 import jadx.cli.plugins.JadxFilesGetter;
 import jadx.commons.app.JadxCommonEnv;
 import jadx.core.utils.exceptions.JadxArgsValidateException;
-import jadx.core.utils.files.FileUtils;
 import jadx.plugins.tools.JadxExternalPluginsLoader;
 
 public class JadxCLI {
@@ -33,7 +32,6 @@ public class JadxCLI {
 			LOG.error("Process error:", e);
 			result = 1;
 		} finally {
-			FileUtils.deleteTempRootDir();
 			System.exit(result);
 		}
 	}

jadx-cli/src/main/java/jadx/cli/plugins/JadxFilesGetter.java

@@ -3,8 +3,8 @@ package jadx.cli.plugins;
 import java.nio.file.Path;
 
 import jadx.commons.app.JadxCommonFiles;
+import jadx.commons.app.JadxTempFiles;
 import jadx.core.plugins.files.IJadxFilesGetter;
-import jadx.core.utils.files.FileUtils;
 
 public class JadxFilesGetter implements IJadxFilesGetter {
 
@@ -22,7 +22,7 @@ public class JadxFilesGetter implements IJadxFilesGetter {
 
 	@Override
 	public Path getTempDir() {
-		return FileUtils.getTempRootDir();
+		return JadxTempFiles.getTempRootDir();
 	}
 
 	private JadxFilesGetter() {

jadx-cli/src/test/java/jadx/cli/TestInput.java

@@ -12,13 +12,11 @@ import java.util.List;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import jadx.core.utils.files.FileUtils;
-
 import static org.assertj.core.api.Assertions.assertThat;
 
 public class TestInput {
@@ -29,6 +27,9 @@ public class TestInput {
 		return true;
 	};
 
+	@TempDir
+	Path testDir;
+
 	@Test
 	public void testHelp() {
 		int result = JadxCLI.execute(new String[] { "--help" });
@@ -37,83 +38,68 @@ public class TestInput {
 
 	@Test
 	public void testDexInput() throws Exception {
-		decompile("dex", "samples/hello.dex");
+		decompile("samples/hello.dex");
 	}
 
 	@Test
 	public void testSmaliInput() throws Exception {
-		decompile("smali", "samples/HelloWorld.smali");
+		decompile("samples/HelloWorld.smali");
 	}
 
 	@Test
 	public void testClassInput() throws Exception {
-		decompile("class", "samples/HelloWorld.class");
+		decompile("samples/HelloWorld.class");
 	}
 
 	@Test
 	public void testMultipleInput() throws Exception {
-		decompile("multi", "samples/hello.dex", "samples/HelloWorld.smali");
+		decompile("samples/hello.dex", "samples/HelloWorld.smali");
 	}
 
 	@Test
 	public void testFallbackMode() throws Exception {
-		Path tempDir = FileUtils.createTempDir("fallback");
-		List<String> args = buildArgs(tempDir, "samples/hello.dex");
-		args.add(0, "-f");
-
-		int result = JadxCLI.execute(args.toArray(new String[0]));
+		int result = JadxCLI.execute(buildArgs(List.of("-f"), "samples/hello.dex"));
 		assertThat(result).isEqualTo(0);
-		List<Path> files = collectJavaFilesInDir(tempDir);
+		List<Path> files = collectJavaFilesInDir(testDir);
 		assertThat(files).hasSize(1);
 	}
 
 	@Test
 	public void testSimpleMode() throws Exception {
-		Path tempDir = FileUtils.createTempDir("simple");
-		List<String> args = buildArgs(tempDir, "samples/hello.dex");
-		args.add(0, "--decompilation-mode");
-		args.add(1, "simple");
-
-		int result = JadxCLI.execute(args.toArray(new String[0]));
+		int result = JadxCLI.execute(buildArgs(List.of("--decompilation-mode", "simple"), "samples/hello.dex"));
 		assertThat(result).isEqualTo(0);
-		List<Path> files = collectJavaFilesInDir(tempDir);
+		List<Path> files = collectJavaFilesInDir(testDir);
 		assertThat(files).hasSize(1);
 	}
 
 	@Test
 	public void testResourceOnly() throws Exception {
-		Path tempDir = FileUtils.createTempDir("resourceOnly");
-		List<String> args = buildArgs(tempDir, "samples/resources-only.apk");
-
-		int result = JadxCLI.execute(args.toArray(new String[0]));
+		int result = JadxCLI.execute(buildArgs(List.of(), "samples/resources-only.apk"));
 		assertThat(result).isEqualTo(0);
-		List<Path> files = collectFilesInDir(tempDir,
+		List<Path> files = collectFilesInDir(testDir,
 				path -> path.getFileName().toString().equalsIgnoreCase("AndroidManifest.xml"));
 		assertThat(files).isNotEmpty();
 	}
 
-	private void decompile(String tmpDirName, String... inputSamples) throws URISyntaxException, IOException {
-		Path tempDir = FileUtils.createTempDir(tmpDirName);
-		List<String> args = buildArgs(tempDir, inputSamples);
-
-		int result = JadxCLI.execute(args.toArray(new String[0]));
+	private void decompile(String... inputSamples) throws URISyntaxException, IOException {
+		int result = JadxCLI.execute(buildArgs(List.of(), inputSamples));
 		assertThat(result).isEqualTo(0);
-		List<Path> resultJavaFiles = collectJavaFilesInDir(tempDir);
+		List<Path> resultJavaFiles = collectJavaFilesInDir(testDir);
 		assertThat(resultJavaFiles).isNotEmpty();
 
 		// do not copy input files as resources
-		for (Path path : collectFilesInDir(tempDir, LOG_ALL_FILES)) {
+		for (Path path : collectFilesInDir(testDir, LOG_ALL_FILES)) {
 			for (String inputSample : inputSamples) {
 				assertThat(path.toAbsolutePath().toString()).doesNotContain(inputSample);
 			}
 		}
 	}
 
-	private List<String> buildArgs(Path tempDir, String... inputSamples) throws URISyntaxException {
-		List<String> args = new ArrayList<>();
+	private String[] buildArgs(List<String> options, String... inputSamples) throws URISyntaxException {
+		List<String> args = new ArrayList<>(options);
 		args.add("-v");
 		args.add("-d");
-		args.add(tempDir.toAbsolutePath().toString());
+		args.add(testDir.toAbsolutePath().toString());
 
 		for (String inputSample : inputSamples) {
 			URL resource = getClass().getClassLoader().getResource(inputSample);
@@ -121,7 +107,7 @@ public class TestInput {
 			String sampleFile = resource.toURI().getRawPath();
 			args.add(sampleFile);
 		}
-		return args;
+		return args.toArray(new String[0]);
 	}
 
 	private static List<Path> collectJavaFilesInDir(Path dir) throws IOException {
@@ -137,9 +123,4 @@ public class TestInput {
 					.collect(Collectors.toList());
 		}
 	}
-
-	@AfterAll
-	public static void cleanup() {
-		FileUtils.clearTempRootDir();
-	}
 }

jadx-commons/jadx-app-commons/src/main/java/jadx/commons/app/JadxTempFiles.java

@@ -0,0 +1,31 @@
+package jadx.commons.app;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+public class JadxTempFiles {
+	private static final String JADX_TMP_INSTANCE_PREFIX = "jadx-instance-";
+
+	private static final Path TEMP_ROOT_DIR = createTempRootDir();
+
+	public static Path getTempRootDir() {
+		return TEMP_ROOT_DIR;
+	}
+
+	private static Path createTempRootDir() {
+		try {
+			String jadxTmpDir = System.getenv("JADX_TMP_DIR");
+			Path dir;
+			if (jadxTmpDir != null) {
+				dir = Files.createTempDirectory(Paths.get(jadxTmpDir), JADX_TMP_INSTANCE_PREFIX);
+			} else {
+				dir = Files.createTempDirectory(JADX_TMP_INSTANCE_PREFIX);
+			}
+			dir.toFile().deleteOnExit();
+			return dir;
+		} catch (Exception e) {
+			throw new RuntimeException("Failed to create temp root directory", e);
+		}
+	}
+}

jadx-core/src/main/java/jadx/api/JadxDecompiler.java

@@ -111,6 +111,7 @@ public final class JadxDecompiler implements Closeable {
 		reset();
 		JadxArgsValidator.validate(this);
 		LOG.info("loading ...");
+		FileUtils.updateTempRootDir(args.getFilesGetter().getTempDir());
 		loadPlugins();
 		loadInputFiles();
 
@@ -174,6 +175,7 @@ public final class JadxDecompiler implements Closeable {
 		closeInputs();
 		closeLoaders();
 		args.close();
+		FileUtils.deleteTempRootDir();
 	}
 
 	private void closeInputs() {

jadx-core/src/main/java/jadx/core/plugins/files/TempFilesGetter.java

@@ -1,5 +1,6 @@
 package jadx.core.plugins.files;
 
+import java.nio.file.Files;
 import java.nio.file.Path;
 
 import jadx.core.utils.files.FileUtils;
@@ -8,22 +9,35 @@ public class TempFilesGetter implements IJadxFilesGetter {
 
 	public static final TempFilesGetter INSTANCE = new TempFilesGetter();
 
+	private final Path tempRootDir;
+
+	private TempFilesGetter() {
+		try {
+			tempRootDir = Files.createTempDirectory("jadx-temp-");
+			tempRootDir.toFile().deleteOnExit();
+		} catch (Exception e) {
+			throw new RuntimeException("Failed to create temp directory", e);
+		}
+	}
+
 	@Override
 	public Path getConfigDir() {
-		return FileUtils.getTempRootDir().resolve("config");
+		return makeSubDir("config");
 	}
 
 	@Override
 	public Path getCacheDir() {
-		return FileUtils.getTempRootDir().resolve("cache");
+		return makeSubDir("cache");
 	}
 
 	@Override
 	public Path getTempDir() {
-		return FileUtils.getTempRootDir().resolve("temp");
+		return tempRootDir;
 	}
 
-	private TempFilesGetter() {
-		// singleton
+	private Path makeSubDir(String subDir) {
+		Path dir = tempRootDir.resolve(subDir);
+		FileUtils.makeDirs(dir);
+		return dir;
 	}
 }

jadx-core/src/main/java/jadx/core/utils/files/FileUtils.java

@@ -45,7 +45,31 @@ public class FileUtils {
 	public static final String JADX_TMP_INSTANCE_PREFIX = "jadx-instance-";
 	public static final String JADX_TMP_PREFIX = "jadx-tmp-";
 
+	private static Path tempRootDir = createTempRootDir();
+
 	private FileUtils() {
+		// utility class
+	}
+
+	public static synchronized Path updateTempRootDir(Path newTempRootDir) {
+		try {
+			Path dir = Files.createTempDirectory(newTempRootDir, JADX_TMP_INSTANCE_PREFIX);
+			tempRootDir = dir;
+			dir.toFile().deleteOnExit();
+			return dir;
+		} catch (Exception e) {
+			throw new JadxRuntimeException("Failed to update temp root directory", e);
+		}
+	}
+
+	private static Path createTempRootDir() {
+		try {
+			Path dir = Files.createTempDirectory(JADX_TMP_INSTANCE_PREFIX);
+			dir.toFile().deleteOnExit();
+			return dir;
+		} catch (Exception e) {
+			throw new JadxRuntimeException("Failed to create temp root directory", e);
+		}
 	}
 
 	public static List<Path> expandDirs(List<Path> paths) {
@@ -150,40 +174,13 @@ public class FileUtils {
 		}
 	}
 
-	private static final Path TEMP_ROOT_DIR = createTempRootDir();
-
-	private static Path createTempRootDir() {
-		try {
-			String jadxTmpDir = System.getenv("JADX_TMP_DIR");
-			Path dir;
-			if (jadxTmpDir != null) {
-				dir = Files.createTempDirectory(Paths.get(jadxTmpDir), "jadx-instance-");
-			} else {
-				dir = Files.createTempDirectory(JADX_TMP_INSTANCE_PREFIX);
-			}
-			dir.toFile().deleteOnExit();
-			return dir;
-		} catch (Exception e) {
-			throw new JadxRuntimeException("Failed to create temp root directory", e);
-		}
-	}
-
-	public static Path getTempRootDir() {
-		return TEMP_ROOT_DIR;
-	}
-
 	public static void deleteTempRootDir() {
-		deleteDirIfExists(TEMP_ROOT_DIR);
-	}
-
-	public static void clearTempRootDir() {
-		deleteDirIfExists(TEMP_ROOT_DIR);
-		makeDirs(TEMP_ROOT_DIR);
+		deleteDirIfExists(tempRootDir);
 	}
 
 	public static Path createTempDir(String prefix) {
 		try {
-			Path dir = Files.createTempDirectory(TEMP_ROOT_DIR, prefix);
+			Path dir = Files.createTempDirectory(tempRootDir, prefix);
 			dir.toFile().deleteOnExit();
 			return dir;
 		} catch (Exception e) {
@@ -193,7 +190,7 @@ public class FileUtils {
 
 	public static Path createTempFile(String suffix) {
 		try {
-			Path path = Files.createTempFile(TEMP_ROOT_DIR, JADX_TMP_PREFIX, suffix);
+			Path path = Files.createTempFile(tempRootDir, JADX_TMP_PREFIX, suffix);
 			path.toFile().deleteOnExit();
 			return path;
 		} catch (Exception e) {

jadx-core/src/main/java/jadx/core/utils/files/ZipFile.java

@@ -8,7 +8,6 @@ import java.io.RandomAccessFile;
 import java.lang.reflect.UndeclaredThrowableException;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
@@ -126,14 +125,12 @@ public class ZipFile extends java.util.zip.ZipFile {
 	}
 
 	private static File copyFile(File file) throws IOException {
-		var newFile = Files.createTempFile(file.getName(), ".apk").toFile();
-
+		var newFile = FileUtils.createTempFile(file.getName()).toFile();
 		try (var in = new FileInputStream(file)) {
 			try (var out = new FileOutputStream(newFile)) {
 				in.transferTo(out);
 			}
 		}
-
 		return newFile;
 	}
 

jadx-core/src/test/java/jadx/api/JadxArgsValidatorOutDirsTest.java

@@ -1,19 +1,24 @@
 package jadx.api;
 
+import java.nio.file.Files;
+import java.nio.file.Path;
+
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import jadx.core.utils.files.FileUtils;
-
 import static jadx.core.utils.files.FileUtils.toFile;
 import static jadx.tests.api.utils.assertj.JadxAssertions.assertThat;
 
 public class JadxArgsValidatorOutDirsTest {
-
 	private static final Logger LOG = LoggerFactory.getLogger(JadxArgsValidatorOutDirsTest.class);
+
 	public JadxArgs args;
 
+	@TempDir
+	Path testDir;
+
 	@Test
 	public void checkAllSet() {
 		setOutDirs("r", "s", "r");
@@ -64,8 +69,12 @@ public class JadxArgsValidatorOutDirsTest {
 	}
 
 	private JadxArgs makeArgs() {
-		JadxArgs args = new JadxArgs();
-		args.getInputFiles().add(FileUtils.createTempFile("some.apk").toFile());
-		return args;
+		try {
+			JadxArgs args = new JadxArgs();
+			args.getInputFiles().add(Files.createTempFile(testDir, "test-", ".apk").toFile());
+			return args;
+		} catch (Exception e) {
+			throw new RuntimeException(e);
+		}
 	}
 }

jadx-core/src/test/java/jadx/api/JadxDecompilerTest.java

@@ -8,8 +8,8 @@ import java.net.URL;
 import java.util.List;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
 
-import jadx.core.utils.files.FileUtils;
 import jadx.core.xmlgen.ResContainer;
 import jadx.plugins.input.dex.DexInputPlugin;
 
@@ -17,15 +17,17 @@ import static jadx.tests.api.utils.assertj.JadxAssertions.assertThat;
 
 public class JadxDecompilerTest {
 
+	@TempDir
+	File testDir;
+
 	@Test
 	public void testExampleUsage() {
 		File sampleApk = getFileFromSampleDir("app-with-fake-dex.apk");
-		File outDir = FileUtils.createTempDir("jadx-usage-example").toFile();
 
 		// test simple apk loading
 		JadxArgs args = new JadxArgs();
 		args.getInputFiles().add(sampleApk);
-		args.setOutDir(outDir);
+		args.setOutDir(testDir);
 
 		try (JadxDecompiler jadx = new JadxDecompiler(args)) {
 			jadx.load();
@@ -59,11 +61,10 @@ public class JadxDecompilerTest {
 	@Test
 	public void testResourcesLoad() {
 		File sampleApk = getFileFromSampleDir("app-with-fake-dex.apk");
-		File outDir = FileUtils.createTempDir("jadx-usage-example-2").toFile();
 
 		JadxArgs args = new JadxArgs();
 		args.getInputFiles().add(sampleApk);
-		args.setOutDir(outDir);
+		args.setOutDir(testDir);
 		args.setSkipSources(true);
 		try (JadxDecompiler jadx = new JadxDecompiler(args)) {
 			jadx.load();

jadx-core/src/test/java/jadx/tests/api/IntegrationTest.java

@@ -30,6 +30,7 @@ import org.jetbrains.annotations.Nullable;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Assumptions;
 import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.io.TempDir;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -53,12 +54,12 @@ import jadx.core.dex.nodes.MethodNode;
 import jadx.core.dex.nodes.RootNode;
 import jadx.core.utils.Utils;
 import jadx.core.utils.exceptions.JadxRuntimeException;
-import jadx.core.utils.files.FileUtils;
 import jadx.core.xmlgen.ResourceStorage;
 import jadx.core.xmlgen.entry.ResourceEntry;
 import jadx.tests.api.compiler.CompilerOptions;
 import jadx.tests.api.compiler.JavaUtils;
 import jadx.tests.api.compiler.TestCompiler;
+import jadx.tests.api.utils.TestFilesGetter;
 import jadx.tests.api.utils.TestUtils;
 
 import static org.apache.commons.lang3.StringUtils.leftPad;
@@ -115,6 +116,9 @@ public abstract class IntegrationTest extends TestUtils {
 
 	protected JadxDecompiler jadxDecompiler;
 
+	@TempDir
+	Path testDir;
+
 	@BeforeEach
 	public void init() {
 		this.compile = true;
@@ -124,7 +128,7 @@ public abstract class IntegrationTest extends TestUtils {
 		this.useJavaInput = null;
 
 		args = new JadxArgs();
-		args.setOutDir(new File("test-out-tmp"));
+		args.setOutDir(testDir.toFile());
 		args.setShowInconsistentCode(true);
 		args.setThreadsCount(1);
 		args.setSkipResources(true);
@@ -132,6 +136,7 @@ public abstract class IntegrationTest extends TestUtils {
 		args.setDeobfuscationOn(false);
 		args.setGeneratedRenamesMappingFileMode(GeneratedRenamesMappingFileMode.IGNORE);
 		args.setRunDebugChecks(true);
+		args.setFilesGetter(new TestFilesGetter(testDir));
 
 		// use the same values on all systems
 		args.setFsCaseSensitive(false);
@@ -144,7 +149,6 @@ public abstract class IntegrationTest extends TestUtils {
 		close(jadxDecompiler);
 		close(sourceCompiler);
 		close(decompiledCompiler);
-		FileUtils.clearTempRootDir();
 	}
 
 	private void close(Closeable closeable) throws IOException {
@@ -154,7 +158,7 @@ public abstract class IntegrationTest extends TestUtils {
 	}
 
 	public void setOutDirSuffix(String suffix) {
-		args.setOutDir(new File("test-out-" + suffix + "-tmp"));
+		args.setOutDir(new File(testDir.toFile(), suffix));
 	}
 
 	public String getTestName() {
@@ -499,7 +503,7 @@ public abstract class IntegrationTest extends TestUtils {
 	}
 
 	private List<File> compileSourceFiles(List<File> compileFileList) throws IOException {
-		Path outTmp = FileUtils.createTempDir("jadx-tmp-classes");
+		Path outTmp = Files.createTempDirectory(testDir, "jadx-tmp-classes");
 		sourceCompiler = new TestCompiler(compilerOptions);
 		List<File> files = sourceCompiler.compileFiles(compileFileList, outTmp);
 		if (saveTestJar) {
@@ -509,7 +513,7 @@ public abstract class IntegrationTest extends TestUtils {
 	}
 
 	private void saveToJar(List<File> files, Path baseDir) throws IOException {
-		Path jarFile = Files.createTempFile("tests-" + getTestName() + '-', ".jar");
+		Path jarFile = Files.createTempFile(testDir, "tests-" + getTestName() + '-', ".jar");
 		try (JarOutputStream jar = new JarOutputStream(Files.newOutputStream(jarFile))) {
 			for (File file : files) {
 				Path fullPath = file.toPath();

jadx-core/src/test/java/jadx/tests/api/utils/TestFilesGetter.java

@@ -0,0 +1,35 @@
+package jadx.tests.api.utils;
+
+import java.nio.file.Path;
+
+import jadx.core.plugins.files.IJadxFilesGetter;
+import jadx.core.utils.files.FileUtils;
+
+public class TestFilesGetter implements IJadxFilesGetter {
+	private final Path testDir;
+
+	public TestFilesGetter(Path testDir) {
+		this.testDir = testDir;
+	}
+
+	@Override
+	public Path getConfigDir() {
+		return makeSubDir("config");
+	}
+
+	@Override
+	public Path getCacheDir() {
+		return makeSubDir("cache");
+	}
+
+	@Override
+	public Path getTempDir() {
+		return testDir;
+	}
+
+	private Path makeSubDir(String config) {
+		Path dir = testDir.resolve(config);
+		FileUtils.makeDirs(dir);
+		return dir;
+	}
+}

jadx-gui/src/main/java/jadx/gui/jobs/DecompileTask.java

@@ -13,16 +13,16 @@ import org.slf4j.LoggerFactory;
 import jadx.api.ICodeCache;
 import jadx.api.JavaClass;
 import jadx.api.utils.tasks.ITaskExecutor;
+import jadx.commons.app.JadxCommonEnv;
 import jadx.core.utils.tasks.TaskExecutor;
 import jadx.gui.JadxWrapper;
 import jadx.gui.ui.MainWindow;
 import jadx.gui.utils.NLS;
-import jadx.gui.utils.UiUtils;
 
 public class DecompileTask extends CancelableBackgroundTask {
 	private static final Logger LOG = LoggerFactory.getLogger(DecompileTask.class);
 
-	private static final int CLS_LIMIT = Integer.parseInt(UiUtils.getEnvVar("JADX_CLS_PROCESS_LIMIT", "50"));
+	private static final int CLS_LIMIT = JadxCommonEnv.getInt("JADX_CLS_PROCESS_LIMIT", 50);
 
 	public static int calcDecompileTimeLimit(int classCount) {
 		return classCount * CLS_LIMIT + 5000;

jadx-gui/src/main/java/jadx/gui/ui/MainWindow.java

@@ -1549,7 +1549,6 @@ public class MainWindow extends JFrame {
 		heapUsageBar.reset();
 		closeAll();
 
-		FileUtils.deleteTempRootDir();
 		dispose();
 		System.exit(0);
 	}

jadx-gui/src/main/java/jadx/gui/utils/UiUtils.java

@@ -337,14 +337,6 @@ public class UiUtils {
 		return null;
 	}
 
-	public static String getEnvVar(String varName, String defValue) {
-		String envVal = System.getenv(varName);
-		if (envVal == null) {
-			return defValue;
-		}
-		return envVal;
-	}
-
 	public static void showMessageBox(Component parent, String msg) {
 		JOptionPane.showMessageDialog(parent, msg);
 	}