manifest: restore application references and Android values (enums, flags)

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

@@ -203,20 +203,21 @@ public final class JadxDecompiler {
 		reset();
 		root = new RootNode();
 		LOG.info("loading ...");
+		root.load(inputFiles);
+
 		if (this.args.isXMLTest()) {
 			InputFile inf = inputFiles.get(0);
 			try {
 				byte[] buffer = InputFile.loadXMLBuffer(inf.getFile());
 				if (buffer != null) {
 					File out = new File(args.getOutDir(), "AndroidManifest.xml");
-					BinaryXMLParser bxp = new BinaryXMLParser();
+					BinaryXMLParser bxp = new BinaryXMLParser(root);
 					bxp.parse(buffer, out);
 				}
 			} catch (Exception e) {
 				LOG.info("Decompiling AndroidManifest.xml failed!", e);
 			}
 		}
-		root.load(inputFiles);
 	}
 
 	void processClass(ClassNode cls) {

jadx-core/src/main/java/jadx/core/codegen/CodeWriter.java

@@ -174,6 +174,10 @@ public class CodeWriter {
 		updateIndent();
 	}
 
+	public int getIndent() {
+		return indent;
+	}
+
 	public int getLine() {
 		return line;
 	}

jadx-core/src/main/java/jadx/core/dex/nodes/RootNode.java

@@ -104,6 +104,10 @@ public class RootNode {
 		return searchClassByName(fullName);
 	}
 
+	public List<DexNode> getDexNodes() {
+		return dexNodes;
+	}
+
 	public ErrorsCounter getErrorsCounter() {
 		return errorsCounter;
 	}

jadx-core/src/main/java/jadx/core/xmlgen/BinaryXMLParser.java

 package jadx.core.xmlgen;
 
 import jadx.core.codegen.CodeWriter;
+import jadx.core.dex.instructions.args.ArgType;
+import jadx.core.dex.nodes.DexNode;
+import jadx.core.dex.nodes.FieldNode;
+import jadx.core.dex.nodes.RootNode;
 import jadx.core.utils.exceptions.JadxRuntimeException;
 
 import java.io.File;
@@ -40,16 +44,28 @@ public class BinaryXMLParser {
 	private boolean wasOneLiner = false;
 
 	private CodeWriter writer;
-	private Map<Integer, String> styleMap = null;
+	private Map<Integer, String> styleMap = new HashMap<Integer, String>();
+	private Map<Integer, FieldNode> localStyleMap = new HashMap<Integer, FieldNode>();
+	private final ManifestAttributes attributes;
 
-	public BinaryXMLParser() {
-		styleMap = new HashMap<Integer, String>();
+	public BinaryXMLParser(RootNode root) {
 		try {
 			for (Field f : AndroidR.style.class.getFields()) {
 				styleMap.put(f.getInt(f.getType()), f.getName());
 			}
-			//TODO: also add application constant fields
-		} catch (IllegalAccessException e) {
+			// add application constants
+			for (DexNode dexNode : root.getDexNodes()) {
+				for (Map.Entry<Object, FieldNode> entry : dexNode.getConstFields().entrySet()) {
+					Object key = entry.getKey();
+					FieldNode field = entry.getValue();
+					if (field.getType().equals(ArgType.INT) && key instanceof Integer) {
+						localStyleMap.put((Integer) key, field);
+					}
+				}
+			}
+			attributes = new ManifestAttributes();
+			attributes.parse();
+		} catch (Exception e) {
 			throw new JadxRuntimeException("BinaryXMLParser init error", e);
 		}
 	}
@@ -194,7 +210,7 @@ public class BinaryXMLParser {
 		}
 		wasOneLiner = false;
 		currentTag = strings[startNSName];
-		writer.startLine("<" + strings[startNSName]);
+		writer.startLine("<").add(strings[startNSName]);
 		int attributeStart = cInt16(bytes, count);
 		if (attributeStart != 0x14) {
 			die("startNS's attributeStart is not 0x14");
@@ -208,7 +224,7 @@ public class BinaryXMLParser {
 		int classIndex = cInt16(bytes, count);
 		int styleIndex = cInt16(bytes, count);
 		if ("manifest".equals(strings[startNSName])) {
-			writer.add(" xmlns:\"" + nsURI + "\"");
+			writer.add(" xmlns:\"").add(nsURI).add("\"");
 		}
 		if (attributeCount > 0) {
 			writer.add(" ");
@@ -227,14 +243,24 @@ public class BinaryXMLParser {
 			int attrValDataType = cInt8(bytes, count);
 			int attrValData = cInt32(bytes, count);
 			if (attributeNS != -1) {
-				writer.add(nsPrefix + ":");
+				writer.add(nsPrefix).add(':');
 			}
-			writer.add(strings[attributeName] + "=\"");
-			if (attrValDataType == 0x3) {
+			String attrName = strings[attributeName];
+			writer.add(attrName).add("=\"");
+			String decodedAttr = attributes.decode(attrName, attrValData);
+			if (decodedAttr != null) {
+				writer.add(decodedAttr);
+			} else {
+				switch (attrValDataType) {
+					case 0x3:
 						writer.add(strings[attrValData]);
-			} else if (attrValDataType == 0x10) {
+						break;
+
+					case 0x10:
 						writer.add(String.valueOf(attrValData));
-			} else if (attrValDataType == 0x12) {
+						break;
+
+					case 0x12:
 						// FIXME: What to do, when data is always -1?
 						if (attrValData == 0) {
 							writer.add("false");
@@ -243,37 +269,33 @@ public class BinaryXMLParser {
 						} else {
 							writer.add("UNKNOWN_BOOLEAN_TYPE");
 						}
-			} else if (attrValDataType == 0x1) {
+						break;
+
+					case 0x1:
 						String name = styleMap.get(attrValData);
 						if (name != null) {
 							writer.add("@*");
 							if (attributeNS != -1) {
-						writer.add(nsPrefix + ":");
+								writer.add(nsPrefix).add(':');
 							}
-					writer.add("style/" + name.replaceAll("_", "."));
+							writer.add("style/").add(name.replaceAll("_", "."));
 						} else {
-					writer.add("0x" + Integer.toHexString(attrValData));
-				}
-			} else {
-				// TODO: extract values names from here:
-				// https://github.com/android/platform_frameworks_base/blob/master/core/res/res/values/attrs_manifest.xml
-				if ("configChanges".equals(strings[attributeName])) {
-					if (attrValData == 1152) {
-						writer.add("orientation");
-					} else if (attrValData == 4016) {
-						writer.add("keyboard|keyboardHidden|orientation|screenLayout|uiMode");
-					} else if (attrValData == 176) {
-						writer.add("keyboard|keyboardHidden|orientation");
-					} else if (attrValData == 160) {
-						writer.add("keyboardHidden|orientation");
+							FieldNode field = localStyleMap.get(attrValData);
+							if (field != null) {
+								String cls = field.getParentClass().getShortName().toLowerCase();
+								writer.add("@").add(cls).add("/").add(field.getName());
 							} else {
-						writer.add("UNKNOWN_DATA_" + Integer.toHexString(attrValData));
+								writer.add("0x").add(Integer.toHexString(attrValData));
 							}
-				} else {
+						}
+						break;
+
+					default:
 						writer.add("UNKNOWN_DATA_TYPE_" + attrValDataType);
+						break;
 				}
 			}
-			writer.add("\"");
+			writer.add('"');
 			if ((i + 1) < attributeCount) {
 				writer.add(" ");
 			}
@@ -292,17 +314,19 @@ public class BinaryXMLParser {
 		int elementNS = cInt32(bytes, count);
 		int elementName = cInt32(bytes, count);
 		if (currentTag.equals(strings[elementName])) {
-			writer.add("/>");
+			writer.add(" />");
 			wasOneLiner = true;
 		} else {
 			writer.startLine("</");
 			if (elementNS != -1) {
-				writer.add(strings[elementNS] + ":");
+				writer.add(strings[elementNS]).add(':');
 			}
-			writer.add(strings[elementName] + ">");
+			writer.add(strings[elementName]).add(">");
 		}
+		if (writer.getIndent() != 0) {
 			writer.decIndent();
 		}
+	}
 
 	private int cInt8(byte[] bytes, int offset) {
 		byte[] tmp = new byte[4];

jadx-core/src/main/java/jadx/core/xmlgen/ManifestAttributes.java

+package jadx.core.xmlgen;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.w3c.dom.Document;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+
+public class ManifestAttributes {
+	private static final Logger LOG = LoggerFactory.getLogger(ManifestAttributes.class);
+
+	private static final String MANIFEST_ATTR_XML = "/attrs_manifest.xml";
+
+	private enum MAttrType {
+		ENUM, FLAG
+	}
+
+	private static class MAttr {
+		private final MAttrType type;
+		private final Map<Integer, String> values = new LinkedHashMap<Integer, String>();
+
+		public MAttr(MAttrType type) {
+			this.type = type;
+		}
+
+		public MAttrType getType() {
+			return type;
+		}
+
+		public Map<Integer, String> getValues() {
+			return values;
+		}
+
+		@Override
+		public String toString() {
+			return "[" + type + ", " + values + "]";
+		}
+	}
+
+	private final Document doc;
+	private final Map<String, MAttr> attrMap = new HashMap<String, MAttr>();
+
+	public ManifestAttributes() throws Exception {
+		InputStream xmlStream = ManifestAttributes.class.getResourceAsStream(MANIFEST_ATTR_XML);
+		DocumentBuilder dBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
+		doc = dBuilder.parse(xmlStream);
+	}
+
+	public void parse() {
+		NodeList nodeList = doc.getChildNodes();
+		for (int count = 0; count < nodeList.getLength(); count++) {
+			Node node = nodeList.item(count);
+			if (node.getNodeType() == Node.ELEMENT_NODE) {
+				if (node.hasChildNodes()) {
+					parseAttrList(node.getChildNodes());
+				}
+			}
+		}
+	}
+
+	private void parseAttrList(NodeList nodeList) {
+		for (int count = 0; count < nodeList.getLength(); count++) {
+			Node tempNode = nodeList.item(count);
+			if (tempNode.getNodeType() == Node.ELEMENT_NODE
+					&& tempNode.hasAttributes()
+					&& tempNode.hasChildNodes()) {
+				String name = null;
+				NamedNodeMap nodeMap = tempNode.getAttributes();
+				for (int i = 0; i < nodeMap.getLength(); i++) {
+					Node node = nodeMap.item(i);
+					if (node.getNodeName().equals("name")) {
+						name = node.getNodeValue();
+						break;
+					}
+				}
+				if (name != null && tempNode.getNodeName().equals("attr")) {
+					parseValues(name, tempNode.getChildNodes());
+				} else {
+					parseAttrList(tempNode.getChildNodes());
+				}
+			}
+		}
+	}
+
+	private void parseValues(String name, NodeList nodeList) {
+		MAttr attr = null;
+		for (int count = 0; count < nodeList.getLength(); count++) {
+			Node tempNode = nodeList.item(count);
+			if (tempNode.getNodeType() == Node.ELEMENT_NODE
+					&& tempNode.hasAttributes()) {
+
+				if (attr == null) {
+					if (tempNode.getNodeName().equals("enum")) {
+						attr = new MAttr(MAttrType.ENUM);
+					} else if (tempNode.getNodeName().equals("flag")) {
+						attr = new MAttr(MAttrType.FLAG);
+					}
+					if (attr == null) {
+						return;
+					}
+					attrMap.put(name, attr);
+				}
+
+				NamedNodeMap attributes = tempNode.getAttributes();
+				Node nameNode = attributes.getNamedItem("name");
+				if (nameNode != null) {
+					Node valueNode = attributes.getNamedItem("value");
+					if (valueNode != null) {
+						try {
+							int key;
+							String nodeValue = valueNode.getNodeValue();
+							if (attr.getType() == MAttrType.ENUM) {
+								key = Integer.parseInt(nodeValue);
+							} else {
+								nodeValue = nodeValue.replace("0x", "");
+								key = Integer.parseInt(nodeValue, 16);
+							}
+							attr.getValues().put(key, nameNode.getNodeValue());
+						} catch (NumberFormatException e) {
+							LOG.debug("Failed parse manifest number", e);
+						}
+					}
+				}
+			}
+		}
+	}
+
+	public String decode(String attrName, int value) {
+		MAttr attr = attrMap.get(attrName);
+		if (attr == null) {
+			return null;
+		}
+		if (attr.getType() == MAttrType.ENUM) {
+			String name = attr.getValues().get(value);
+			if (name != null) {
+				return name;
+			}
+		} else if (attr.getType() == MAttrType.FLAG) {
+			StringBuilder sb = new StringBuilder();
+			for (Map.Entry<Integer, String> entry : attr.getValues().entrySet()) {
+				if ((value & entry.getKey()) != 0) {
+					sb.append(entry.getValue()).append('|');
+				}
+			}
+			if (sb.length() != 0) {
+				return sb.deleteCharAt(sb.length() - 1).toString();
+			}
+		}
+		return "UNKNOWN_DATA_" + Integer.toHexString(value);
+	}
+}