core: add resources methods to jadx API

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

@@ -32,6 +32,12 @@ public final class JadxCLIArgs implements IJadxArgs {
 	@Parameter(names = {"-f", "--fallback"}, description = "make simple dump (using goto instead of 'if', 'for', etc)")
 	protected boolean fallbackMode = false;
 
+	@Parameter(names = {"-r", "--no-res"}, description = "do not decode resources")
+	protected boolean skipResources = false;
+
+	@Parameter(names = {"-s", "--no-src"}, description = "do not decompile source code")
+	protected boolean skipSources = false;
+
 	@Parameter(names = {"--show-bad-code"}, description = "show inconsistent code (incorrectly decompiled)")
 	protected boolean showInconsistentCode = false;
 
@@ -47,9 +53,6 @@ public final class JadxCLIArgs implements IJadxArgs {
 	@Parameter(names = {"-h", "--help"}, description = "print this help", help = true)
 	protected boolean printHelp = false;
 
-	@Parameter(names = {"-x", "--xml"}, description = "try to decode the AndroidManifest.xml")
-	protected boolean xmlTest = false;
-
 	private final List<File> input = new ArrayList<File>(1);
 	private File outputDir;
 
@@ -168,8 +171,13 @@ public final class JadxCLIArgs implements IJadxArgs {
 	}
 
 	@Override
-	public boolean isXMLTest() {
-		return xmlTest;
+	public boolean isSkipResources() {
+		return skipResources;
+	}
+
+	@Override
+	public boolean isSkipSources() {
+		return skipSources;
 	}
 
 	@Override

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

@@ -40,7 +40,12 @@ public class DefaultJadxArgs implements IJadxArgs {
 	}
 
 	@Override
-	public boolean isXMLTest() {
+	public boolean isSkipResources() {
+		return false;
+	}
+
+	@Override
+	public boolean isSkipSources() {
 		return false;
 	}
 }

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

@@ -17,5 +17,7 @@ public interface IJadxArgs {
 
 	boolean isVerbose();
 
-	boolean isXMLTest();
+	boolean isSkipResources();
+
+	boolean isSkipSources();
 }

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

@@ -2,6 +2,7 @@ package jadx.api;
 
 import jadx.core.Jadx;
 import jadx.core.ProcessClass;
+import jadx.core.codegen.CodeWriter;
 import jadx.core.dex.info.ClassInfo;
 import jadx.core.dex.nodes.ClassNode;
 import jadx.core.dex.nodes.RootNode;
@@ -55,6 +56,9 @@ public final class JadxDecompiler {
 	private RootNode root;
 	private List<IDexTreeVisitor> passes;
 	private List<JavaClass> classes;
+	private List<ResourceFile> resources;
+
+	private BinaryXMLParser xmlParser;
 
 	public JadxDecompiler() {
 		this(new DefaultJadxArgs());
@@ -82,6 +86,8 @@ public final class JadxDecompiler {
 	void reset() {
 		ClassInfo.clearCache();
 		classes = null;
+		resources = null;
+		xmlParser = null;
 		root = null;
 	}
 
@@ -108,27 +114,21 @@ public final class JadxDecompiler {
 		parse();
 	}
 
-	public void parseAndSaveXML() {
-		if (this.args.isXMLTest()) {
-			InputFile inf = inputFiles.get(0);
-			try {
-				byte[] buffer = InputFile.loadXMLBuffer(inf.getFile());
-				if (buffer != null) {
-					File out = new File(outDir, "AndroidManifest.xml");
-					BinaryXMLParser bxp = new BinaryXMLParser(root);
-					bxp.parse(buffer, out);
-				}
-			} catch (Exception e) {
-				LOG.info("Decompiling AndroidManifest.xml failed!", e);
-			}
-		}
+	public void save() {
+		save(!args.isSkipSources(), !args.isSkipResources());
 	}
 
-	public void save() {
-		parseAndSaveXML();
+	public void saveSources() {
+		save(true, false);
+	}
+
+	public void saveResources() {
+		save(false, true);
+	}
 
+	private void save(boolean saveSources, boolean saveResources) {
 		try {
-			ExecutorService ex = getSaveExecutor();
+			ExecutorService ex = getSaveExecutor(saveSources, saveResources);
 			ex.shutdown();
 			ex.awaitTermination(1, TimeUnit.DAYS);
 		} catch (InterruptedException e) {
@@ -137,6 +137,10 @@ public final class JadxDecompiler {
 	}
 
 	public ExecutorService getSaveExecutor() {
+		return getSaveExecutor(!args.isSkipSources(), !args.isSkipResources());
+	}
+
+	private ExecutorService getSaveExecutor(boolean saveSources, boolean saveResources) {
 		if (root == null) {
 			throw new JadxRuntimeException("No loaded files");
 		}
@@ -145,14 +149,31 @@ public final class JadxDecompiler {
 
 		LOG.info("processing ...");
 		ExecutorService executor = Executors.newFixedThreadPool(threadsCount);
-		for (final JavaClass cls : getClasses()) {
-			executor.execute(new Runnable() {
-				@Override
-				public void run() {
-					cls.decompile();
-					SaveCode.save(outDir, args, cls.getClassNode());
-				}
-			});
+		if (saveSources) {
+			for (final JavaClass cls : getClasses()) {
+				executor.execute(new Runnable() {
+					@Override
+					public void run() {
+						cls.decompile();
+						SaveCode.save(outDir, args, cls.getClassNode());
+					}
+				});
+			}
+		}
+		if (saveResources) {
+			for (final ResourceFile resourceFile : getResources()) {
+				executor.execute(new Runnable() {
+					@Override
+					public void run() {
+						if (ResourceType.isSupportedForUnpack(resourceFile.getType())) {
+							CodeWriter cw = resourceFile.getContent();
+							if (cw != null) {
+								cw.save(new File(outDir, resourceFile.getName()));
+							}
+						}
+					}
+				});
+			}
 		}
 		return executor;
 	}
@@ -172,6 +193,16 @@ public final class JadxDecompiler {
 		return classes;
 	}
 
+	public List<ResourceFile> getResources() {
+		if (resources == null) {
+			if (root == null) {
+				return Collections.emptyList();
+			}
+			resources = new ResourcesLoader(this).load(inputFiles);
+		}
+		return resources;
+	}
+
 	public List<JavaPackage> getPackages() {
 		List<JavaClass> classList = getClasses();
 		if (classList.isEmpty()) {
@@ -232,6 +263,13 @@ public final class JadxDecompiler {
 		return root;
 	}
 
+	BinaryXMLParser getXmlParser() {
+		if (xmlParser == null) {
+			xmlParser = new BinaryXMLParser(root);
+		}
+		return xmlParser;
+	}
+
 	JavaClass findJavaClass(ClassNode cls) {
 		if (cls == null) {
 			return null;

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

+package jadx.api;
+
+import jadx.core.codegen.CodeWriter;
+
+import java.io.File;
+
+public class ResourceFile {
+
+	public static final class ZipRef {
+		private final File zipFile;
+		private final String entryName;
+
+		public ZipRef(File zipFile, String entryName) {
+			this.zipFile = zipFile;
+			this.entryName = entryName;
+		}
+
+		public File getZipFile() {
+			return zipFile;
+		}
+
+		public String getEntryName() {
+			return entryName;
+		}
+
+		@Override
+		public String toString() {
+			return "ZipRef{" + zipFile + ", '" + entryName + "'}";
+		}
+	}
+
+	private final JadxDecompiler decompiler;
+	private final String name;
+	private final ResourceType type;
+	private ZipRef zipRef;
+
+	ResourceFile(JadxDecompiler decompiler, String name, ResourceType type) {
+		this.decompiler = decompiler;
+		this.name = name;
+		this.type = type;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public ResourceType getType() {
+		return type;
+	}
+
+	public CodeWriter getContent() {
+		return ResourcesLoader.loadContent(decompiler, zipRef, type);
+	}
+
+	void setZipRef(ZipRef zipRef) {
+		this.zipRef = zipRef;
+	}
+
+	@Override
+	public String toString() {
+		return "ResourceFile{name='" + name + '\'' + ", type=" + type + "}";
+	}
+}

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

+package jadx.api;
+
+public enum ResourceType {
+	CODE(".dex", ".class"),
+	MANIFEST("AndroidManifest.xml"),
+	XML(".xml"), // TODO binary or not?
+	ARSC(".arsc"), // TODO decompile !!!
+	FONT(".ttf"),
+	IMG(".png", ".gif", ".jpg"),
+	LIB(".so"),
+	UNKNOWN;
+
+	private String[] exts;
+
+	ResourceType(String... exts) {
+		this.exts = exts;
+	}
+
+	public String[] getExts() {
+		return exts;
+	}
+
+	public static ResourceType getFileType(String fileName) {
+		for (ResourceType type : ResourceType.values()) {
+			for (String ext : type.getExts()) {
+				if (fileName.endsWith(ext)) {
+					return type;
+				}
+			}
+		}
+		return UNKNOWN;
+	}
+
+	public static boolean isSupportedForUnpack(ResourceType type) {
+		switch (type) {
+			case CODE:
+			case ARSC:
+			case LIB:
+			case XML:
+			case FONT:
+			case IMG:
+			case UNKNOWN:
+				return false;
+
+			case MANIFEST:
+				return true;
+		}
+		return false;
+	}
+}

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

+package jadx.api;
+
+import jadx.api.ResourceFile.ZipRef;
+import jadx.core.codegen.CodeWriter;
+import jadx.core.utils.files.InputFile;
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.List;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipFile;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+// TODO: move to core package
+final class ResourcesLoader {
+	private static final Logger LOG = LoggerFactory.getLogger(ResourcesLoader.class);
+
+	private static final int READ_BUFFER_SIZE = 8 * 1024;
+	private static final int LOAD_SIZE_LIMIT = 500 * 1024;
+
+	private JadxDecompiler jadxRef;
+
+	ResourcesLoader(JadxDecompiler jadxRef) {
+		this.jadxRef = jadxRef;
+	}
+
+	List<ResourceFile> load(List<InputFile> inputFiles) {
+		List<ResourceFile> list = new ArrayList<ResourceFile>(inputFiles.size());
+		for (InputFile file : inputFiles) {
+			loadFile(list, file.getFile());
+		}
+		return list;
+	}
+
+	static CodeWriter loadContent(JadxDecompiler jadxRef, ZipRef zipRef, ResourceType type) {
+		if (zipRef == null) {
+			return null;
+		}
+		ZipFile zipFile = null;
+		InputStream inputStream = null;
+		try {
+			zipFile = new ZipFile(zipRef.getZipFile());
+			ZipEntry entry = zipFile.getEntry(zipRef.getEntryName());
+			if (entry != null) {
+				if (entry.getSize() > LOAD_SIZE_LIMIT) {
+					return new CodeWriter().add("File too big, size: "
+							+ String.format("%.2f KB", entry.getSize() / 1024.));
+				}
+				inputStream = new BufferedInputStream(zipFile.getInputStream(entry));
+				return decode(jadxRef, type, inputStream);
+			} else {
+				LOG.warn("Zip entry not found: {}", zipRef);
+			}
+		} catch (IOException e) {
+			LOG.error("Error load: " + zipRef, e);
+		} finally {
+			try {
+				if (zipFile != null) {
+					zipFile.close();
+				}
+				if (inputStream != null) {
+					inputStream.close();
+				}
+			} catch (Exception e) {
+				LOG.debug("Error close zip file: " + zipRef, e);
+			}
+		}
+		return null;
+	}
+
+	private static CodeWriter decode(JadxDecompiler jadxRef, ResourceType type,
+			InputStream inputStream) throws IOException {
+		switch (type) {
+			case MANIFEST:
+			case XML:
+				return jadxRef.getXmlParser().parse(inputStream);
+		}
+		return loadToCodeWriter(inputStream);
+	}
+
+	private void loadFile(List<ResourceFile> list, File file) {
+		if (file == null) {
+			return;
+		}
+		ZipFile zip = null;
+		try {
+			zip = new ZipFile(file);
+			Enumeration<? extends ZipEntry> entries = zip.entries();
+			while (entries.hasMoreElements()) {
+				ZipEntry entry = entries.nextElement();
+				addEntry(list, file, entry);
+			}
+		} catch (IOException e) {
+			LOG.debug("Not a zip file: " + file.getAbsolutePath());
+		} finally {
+			if (zip != null) {
+				try {
+					zip.close();
+				} catch (Exception e) {
+					LOG.error("Zip file close error: " + file.getAbsolutePath(), e);
+				}
+			}
+		}
+	}
+
+	private void addEntry(List<ResourceFile> list, File zipFile, ZipEntry entry) {
+		if (entry.isDirectory()) {
+			return;
+		}
+		String name = entry.getName();
+		ResourceType type = ResourceType.getFileType(name);
+		ResourceFile rf = new ResourceFile(jadxRef, name, type);
+		rf.setZipRef(new ZipRef(zipFile, name));
+		list.add(rf);
+		// LOG.debug("Add resource entry: {}, size: {}", name, entry.getSize());
+	}
+
+	private static CodeWriter loadToCodeWriter(InputStream is) throws IOException {
+		CodeWriter cw = new CodeWriter();
+		ByteArrayOutputStream baos = new ByteArrayOutputStream(READ_BUFFER_SIZE);
+		byte[] buffer = new byte[READ_BUFFER_SIZE];
+		int count;
+		try {
+			while ((count = is.read(buffer)) != -1) {
+				baos.write(buffer, 0, count);
+			}
+		} finally {
+			try {
+				is.close();
+			} catch (Exception ignore) {
+			}
+		}
+		cw.add(baos.toString("UTF-8"));
+		return cw;
+	}
+}

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

@@ -128,6 +128,11 @@ public abstract class IntegrationTest extends TestUtils {
 			public int getThreadsCount() {
 				return 1;
 			}
+
+			@Override
+			public boolean isSkipResources() {
+				return true;
+			}
 		}, new File(outDir));
 	}