fix: always use FileUtils.createTempFile (PR #634)

jadx-core/src/main/java/jadx/core/clsp/ClsSet.java

@@ -168,7 +168,7 @@ public class ClsSet {
 				save(outputStream);
 			}
 		} else if (outputName.endsWith(".jar")) {
-			Path temp = Files.createTempFile("jadx", ".zip");
+			Path temp = FileUtils.createTempFile(".zip");
 			Files.copy(path, temp, StandardCopyOption.REPLACE_EXISTING);
 
 			try (ZipOutputStream out = new ZipOutputStream(Files.newOutputStream(path));
@@ -185,8 +185,6 @@ public class ClsSet {
 					entry = in.getNextEntry();
 				}
 			}
-			Files.delete(temp);
-
 		} else {
 			throw new JadxRuntimeException("Unknown file format: " + outputName);
 		}

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

@@ -65,24 +65,13 @@ public class FileUtils {
 		}
 	}
 
-	public static File createTempFile(String suffix) {
-		File temp;
+	public static Path createTempFile(String suffix) {
 		try {
-			temp = File.createTempFile("jadx-tmp-", System.nanoTime() + '-' + suffix);
-			temp.deleteOnExit();
-		} catch (IOException e) {
-			throw new JadxRuntimeException("Failed to create temp file with suffix: " + suffix);
-		}
-		return temp;
-	}
-
-	public static File createTempDir(String suffix) {
-		try {
-			Path path = Files.createTempDirectory("jadx-tmp-" + System.nanoTime() + '-' + suffix);
+			Path path = Files.createTempFile("jadx-tmp-", suffix);
 			path.toFile().deleteOnExit();
-			return path.toFile();
+			return path;
 		} catch (IOException e) {
-			throw new JadxRuntimeException("Failed to create temp directory with suffix: " + suffix);
+			throw new JadxRuntimeException("Failed to create temp file with suffix: " + suffix);
 		}
 	}
 

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

@@ -4,9 +4,9 @@ import static jadx.core.utils.files.FileUtils.isApkFile;
 import static jadx.core.utils.files.FileUtils.isZipDexFile;
 
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.OutputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
@@ -58,7 +58,7 @@ public class InputFile {
 			return;
 		}
 		if (fileName.endsWith(".smali")) {
-			Path output = Files.createTempFile("jadx", ".dex");
+			Path output = FileUtils.createTempFile(".dex");
 			SmaliOptions options = new SmaliOptions();
 			options.outputDexFile = output.toAbsolutePath().toString();
 			Smali.assemble(options, file.getAbsolutePath());
@@ -134,7 +134,7 @@ public class InputFile {
 
 							case ".jar":
 								index++;
-								Path jarFile = Files.createTempFile(entryName, ".jar");
+								Path jarFile = FileUtils.createTempFile(entryName);
 								Files.copy(inputStream, jarFile, StandardCopyOption.REPLACE_EXISTING);
 								for (Dex dex : loadFromJar(jarFile)) {
 									addDexFile(entryName, dex);
@@ -145,11 +145,11 @@ public class InputFile {
 								throw new JadxRuntimeException("Unexpected extension in zip: " + ext);
 						}
 					} else if (entryName.equals("instant-run.zip") && ext.equals(".dex")) {
-						File jarFile = FileUtils.createTempFile("instant-run.zip");
-						try (FileOutputStream fos = new FileOutputStream(jarFile)) {
+						Path jarFile = FileUtils.createTempFile("instant-run.zip");
+						try (OutputStream fos = Files.newOutputStream(jarFile)) {
 							IOUtils.copy(inputStream, fos);
 						}
-						InputFile tempFile = new InputFile(jarFile);
+						InputFile tempFile = new InputFile(jarFile.toFile());
 						tempFile.loadFromZip(ext);
 						List<DexFile> dexFiles = tempFile.getDexFiles();
 						if (!dexFiles.isEmpty()) {
@@ -196,7 +196,7 @@ public class InputFile {
 	}
 
 	private static List<Dex> loadFromClassFile(File file) throws IOException, DecodeException {
-		Path outFile = Files.createTempFile("cls", ".jar");
+		Path outFile = FileUtils.createTempFile(".jar");
 		try (JarOutputStream jo = new JarOutputStream(Files.newOutputStream(outFile))) {
 			String clsName = AsmUtils.getNameFromClassFile(file);
 			if (clsName == null || !ZipSecurity.isValidZipEntryName(clsName)) {

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

@@ -66,7 +66,7 @@ public class JadxArgsValidatorOutDirsTest {
 
 	private JadxArgs makeArgs() {
 		JadxArgs args = new JadxArgs();
-		args.getInputFiles().add(FileUtils.createTempFile("some.apk"));
+		args.getInputFiles().add(FileUtils.createTempFile("some.apk").toFile());
 		return args;
 	}
 }