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field conflicting / method conflicting reworked

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identifiers are now in a list, fieldIdents and methodIdents are sub lists


git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@1008 379699f6-c40d-0410-875b-85095c16579e
stable
jochen 26 years ago
parent 93b91a3a69
commit 7dde6f515f
1 changed files with 142 additions and 339 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 479
      jode/jode/obfuscator/ClassIdentifier.java

479
jode/jode/obfuscator/ClassIdentifier.java
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@ -24,6 +24,7 @@ import jode.bytecode.*;
///import java.util.Comparator;
///import java.util.Collection;
///import java.util.Collections;
///import java.util.ArrayList;
///import java.util.Arrays;
///import java.util.Iterator;
///import java.util.List;
@ -33,6 +34,7 @@ import jode.bytecode.*;
import jode.util.Comparator;
import jode.util.Collection;
import jode.util.Collections;
import jode.util.ArrayList;
import jode.util.Arrays;
import jode.util.Iterator;
import jode.util.List;
@ -52,15 +54,11 @@ public class ClassIdentifier extends Identifier {
PackageIdentifier pack;
String name;
ClassInfo info;
boolean willStrip;
String superName;
String[] ifaceNames;
int fieldCount;
/* The first fieldCount are of type FieldIdentifier, the remaining
* are MethodIdentifier
*/
Identifier[] identifiers;
List identifiers;
List fieldIdents, methodIdents;
List knownSubClasses = new LinkedList();
List virtualReachables = new LinkedList();
@ -82,40 +80,35 @@ public class ClassIdentifier extends Identifier {
public void preserveMatchingIdentifier(WildCard wildcard) {
String fullName = getFullName() + ".";
for (int i=0; i< identifiers.length; i++) {
if (wildcard.matches(fullName + identifiers[i].getName())
|| wildcard.matches(fullName + identifiers[i].getName()
+ "." +identifiers[i].getType())) {
for (Iterator i = getChilds(); i.hasNext(); ) {
Identifier ident = (Identifier) i.next();
if (wildcard.matches(fullName + ident.getName())
|| wildcard.matches(fullName + ident.getName()
+ "." +ident.getType())) {
if (GlobalOptions.verboseLevel > 0)
GlobalOptions.err.println("Preserving "+identifiers[i]);
GlobalOptions.err.println("Preserving "+ident);
setPreserved();
identifiers[i].setPreserved();
identifiers[i].setReachable();
ident.setPreserved();
ident.setReachable();
}
}
}
public void preserveIdentifier(String name, String typeSig) {
for (int i=0; i< identifiers.length; i++) {
if (name.equals(identifiers[i].getName())
&& typeSig.equals(identifiers[i].getType()))
identifiers[i].setPreserved();
}
preserveMatchingIdentifier(new WildCard(name+"."+typeSig));
}
public void reachableIdentifier(String name, String typeSig,
boolean isVirtual) {
boolean found = false;
for (int i=0; i< identifiers.length; i++) {
if (name.equals(identifiers[i].getName())
&& typeSig.equals(identifiers[i].getType())) {
identifiers[i].setReachable();
for (Iterator i = getChilds(); i.hasNext(); ) {
Identifier ident = (Identifier) i.next();
if (name.equals(ident.getName())
&& typeSig.equals(ident.getType())) {
ident.setReachable();
found = true;
}
}
if (!found) {
/*XXXXXXXX super reachableIdentifier */
} /*ELSE*/
if (isVirtual) {
for (Iterator i = knownSubClasses.iterator(); i.hasNext(); )
((ClassIdentifier)i.next())
@ -124,13 +117,14 @@ public class ClassIdentifier extends Identifier {
}
}
public void chainIdentifier(Identifier ident) {
String name = ident.getName();
String typeSig = ident.getType();
for (int i=0; i< identifiers.length; i++) {
if (identifiers[i].getName().equals(ident.getName())
&& (identifiers[i].getType().equals(typeSig)))
ident.addShadow(identifiers[i]);
public void chainIdentifier(Identifier chainIdent) {
String name = chainIdent.getName();
String typeSig = chainIdent.getType();
for (Iterator i = getChilds(); i.hasNext(); ) {
Identifier ident = (Identifier) i.next();
if (ident.getName().equals(ident.getName())
&& (ident.getType().equals(typeSig)))
chainIdent.addShadow(ident);
}
}
@ -201,9 +195,8 @@ public class ClassIdentifier extends Identifier {
}
};
List idents = Arrays.asList((Object[]) identifiers.clone());
List fields = idents.subList(0, fieldCount);
List methods = idents.subList(fieldCount, idents.size());
List fields = Arrays.asList(fieldIdents.toArray());
List methods = Arrays.asList(methodIdents.toArray());
Collections.sort(fields, identCmp);
Collections.sort(methods, identCmp);
@ -219,7 +212,7 @@ public class ClassIdentifier extends Identifier {
out.writeInt(modifiers);
out.writeUTF(field.getType());
}
for(Iterator i = methods.iterator(); i.hasNext(); ) {
for (Iterator i = methods.iterator(); i.hasNext(); ) {
MethodIdentifier method = (MethodIdentifier) i.next();
modifiers = method.info.getModifiers();
if( Modifier.isPrivate(modifiers))
@ -258,11 +251,12 @@ public class ClassIdentifier extends Identifier {
if ((Main.options & Main.OPTION_PRESERVESERIAL) != 0) {
setPreserved();
boolean hasSerialUID = false;
for (int i=0; i< fieldCount; i++) {
if ("serialVersionUID".equals(identifiers[i].getName())
&& "J".equals(identifiers[i].getType())) {
identifiers[i].setReachable();
identifiers[i].setPreserved();
for (Iterator i = getFieldIdents().iterator(); i.hasNext(); ) {
Identifier ident = (Identifier) i.next();
if ("serialVersionUID".equals(ident.getName())
&& "J".equals(ident.getType())) {
ident.setReachable();
ident.setPreserved();
hasSerialUID = true;
break;
}
@ -270,11 +264,6 @@ public class ClassIdentifier extends Identifier {
if (!hasSerialUID) {
/* add a field serializableVersionUID if not existent */
long serialVersion = calcSerialVersionUID();
Identifier[] newIdents = new Identifier[identifiers.length+1];
System.arraycopy(identifiers, 0, newIdents, 0, fieldCount);
System.arraycopy(identifiers, fieldCount,
newIdents, fieldCount + 1,
identifiers.length - fieldCount);
FieldInfo UIDField = new FieldInfo
(info, "serialVersionUID", "J",
Modifier.PUBLIC | Modifier.STATIC | Modifier.FINAL);
@ -282,11 +271,10 @@ public class ClassIdentifier extends Identifier {
FieldIdentifier fident = new FieldIdentifier(this, UIDField);
fident.setPreserved();
fident.setReachable();
newIdents[fieldCount++] = fident;
identifiers = newIdents;
fieldIdents.add(fident);
}
for (int i=0; i < fieldCount; i++) {
FieldIdentifier ident = (FieldIdentifier) identifiers[i];
for (Iterator i=getFieldIdents().iterator(); i.hasNext(); ) {
FieldIdentifier ident = (FieldIdentifier) i.next();
if ((ident.info.getModifiers()
& (Modifier.TRANSIENT | Modifier.STATIC)) == 0) {
ident.setPreserved();
@ -360,10 +348,9 @@ public class ClassIdentifier extends Identifier {
ClassIdentifier superident = Main.getClassBundle()
.getClassIdentifier(superclass.getName());
if (superident != null) {
for (int i=superident.fieldCount;
i < superident.identifiers.length; i++) {
MethodIdentifier mid = (MethodIdentifier)
superident.identifiers[i];
for (Iterator i = superident.getMethodIdents().iterator();
i.hasNext(); ) {
MethodIdentifier mid = (MethodIdentifier) i.next();
// all virtual methods in superclass must be chained.
int modif = mid.info.getModifiers();
if (((Modifier.PRIVATE
@ -371,7 +358,7 @@ public class ClassIdentifier extends Identifier {
| Modifier.FINAL) & modif) == 0
&& !(mid.getName().equals("<init>"))) {
// chain the preserved/same name lists.
chainIdentifier(superident.identifiers[i]);
chainIdentifier(mid);
}
}
} else {
@ -406,22 +393,24 @@ public class ClassIdentifier extends Identifier {
Collections.shuffle(Arrays.asList(finfos), rand);
Collections.shuffle(Arrays.asList(minfos), rand);
}
fieldCount = finfos.length;
identifiers = new Identifier[finfos.length + minfos.length];
for (int i=0; i< fieldCount; i++) {
identifiers[i] = new FieldIdentifier(this, finfos[i]);
}
identifiers = new ArrayList(finfos.length + minfos.length);
fieldIdents = identifiers.subList(0, 0);
methodIdents = identifiers.subList(0, 0);
identifiers = Collections.unmodifiableList(identifiers);
for (int i=0; i< finfos.length; i++)
fieldIdents.add(new FieldIdentifier(this, finfos[i]));
for (int i=0; i< minfos.length; i++) {
identifiers[fieldCount + i]
= new MethodIdentifier(this, minfos[i]);
if (identifiers[fieldCount + i].getName().equals("<clinit>")) {
MethodIdentifier ident = new MethodIdentifier(this, minfos[i]);
methodIdents.add(ident);
if (ident.getName().equals("<clinit>")) {
/* If there is a static initializer, it is automatically
* reachable (even if this class wouldn't be otherwise).
*/
identifiers[fieldCount + i].setPreserved();
identifiers[fieldCount + i].setReachable();
} else if (identifiers[fieldCount + i].getName().equals("<init>"))
identifiers[fieldCount + i].setPreserved();
ident.setPreserved();
ident.setReachable();
} else if (ident.getName().equals("<init>"))
ident.setPreserved();
}
// preserve / chain inherited methods and fields.
@ -480,26 +469,6 @@ public class ClassIdentifier extends Identifier {
public void buildTable(Renamer renameRule) {
super.buildTable(renameRule);
for (int i=0; i < identifiers.length; i++)
if ((Main.stripping & Main.STRIP_UNREACH) == 0
|| identifiers[i].isReachable())
identifiers[i].buildTable(renameRule);
}
public void readTable(Map table) {
super.readTable(table);
for (int i=0; i < identifiers.length; i++)
if ((Main.stripping & Main.STRIP_UNREACH) == 0
|| identifiers[i].isReachable())
identifiers[i].readTable(table);
}
public void writeTable(Map table) {
super.writeTable(table);
for (int i=0; i < identifiers.length; i++)
if ((Main.stripping & Main.STRIP_UNREACH) == 0
|| identifiers[i].isReachable())
identifiers[i].writeTable(table);
}
/**
@ -702,36 +671,30 @@ public class ClassIdentifier extends Identifier {
int newFieldCount = 0, newMethodCount = 0;
if ((Main.stripping & Main.STRIP_UNREACH) != 0) {
for (int i=0; i < fieldCount; i++)
if (identifiers[i].isReachable())
newFieldCount++;
for (int i=fieldCount; i < identifiers.length; i++)
if (identifiers[i].isReachable())
newMethodCount++;
} else {
newFieldCount = fieldCount;
newMethodCount = identifiers.length - fieldCount;
for (Iterator i = fieldIdents.iterator(); i.hasNext(); ) {
Identifier ident = (Identifier) i.next();
if (!ident.isReachable())
i.remove();
}
for (Iterator i = methodIdents.iterator(); i.hasNext(); ) {
Identifier ident = (Identifier) i.next();
if (!ident.isReachable())
i.remove();
}
}
FieldInfo[] newFields = new FieldInfo[newFieldCount];
MethodInfo[] newMethods = new MethodInfo[newMethodCount];
FieldInfo[] newFields = new FieldInfo[fieldIdents.size()];
MethodInfo[] newMethods = new MethodInfo[methodIdents.size()];
newFieldCount = newMethodCount = 0;
for (int i=0; i < fieldCount; i++) {
if ((Main.stripping & Main.STRIP_UNREACH) == 0
|| identifiers[i].isReachable()) {
((FieldIdentifier)identifiers[i]).doTransformations();
newFields[newFieldCount++]
= ((FieldIdentifier)identifiers[i]).info;
}
for (Iterator i = fieldIdents.iterator(); i.hasNext(); ) {
FieldIdentifier ident = (FieldIdentifier)i.next();
ident.doTransformations();
newFields[newFieldCount++] = ident.info;
}
for (int i=fieldCount; i < identifiers.length; i++) {
if ((Main.stripping & Main.STRIP_UNREACH) == 0
|| identifiers[i].isReachable()) {
((MethodIdentifier)identifiers[i]).doTransformations();
newMethods[newMethodCount++]
= ((MethodIdentifier)identifiers[i]).info;
}
for (Iterator i = methodIdents.iterator(); i.hasNext(); ) {
MethodIdentifier ident = (MethodIdentifier)i.next();
ident.doTransformations();
newMethods[newMethodCount++] = ident.info;
}
info.setFields(newFields);
@ -778,8 +741,16 @@ public class ClassIdentifier extends Identifier {
return "Ljava/lang/Class;";
}
public List getFieldIdents() {
return fieldIdents;
}
public List getMethodIdents() {
return methodIdents;
}
public Iterator getChilds() {
return Arrays.asList(identifiers).iterator();
return identifiers.iterator();
}
public String toString() {
@ -787,10 +758,11 @@ public class ClassIdentifier extends Identifier {
}
public Identifier getIdentifier(String fieldName, String typeSig) {
for (int i=0; i < identifiers.length; i++) {
if (identifiers[i].getName().equals(fieldName)
&& identifiers[i].getType().startsWith(typeSig))
return identifiers[i];
for (Iterator i = identifiers.iterator(); i.hasNext(); ) {
Identifier ident = (Identifier) i.next();
if (ident.getName().equals(fieldName)
&& ident.getType().startsWith(typeSig))
return ident;
}
for (int i=0; i < ifaceNames.length; i++) {
@ -817,63 +789,16 @@ public class ClassIdentifier extends Identifier {
return null;
}
public static boolean containsField
(ClassInfo clazz, String name, String type, ModifierMatcher modMatch) {
FieldInfo[] finfos = clazz.getFields();
for (int i=0; i< finfos.length; i++) {
if (finfos[i].getName().equals(name)
&& finfos[i].getType().startsWith(type)
&& modMatch.matches(finfos[i].getModifiers()))
return true;
}
ClassInfo[] ifaces = clazz.getInterfaces();
for (int i=0; i < ifaces.length; i++) {
if (containsField(ifaces[i], name, type, modMatch))
return true;
}
if (clazz.getSuperclass() != null) {
if (containsField(clazz.getSuperclass(),
name, type, modMatch))
return true;
}
return false;
}
public static boolean containsMethod
(ClassInfo clazz, String name, String type, ModifierMatcher modMatch) {
MethodInfo[] minfos = clazz.getMethods();
for (int i=0; i< minfos.length; i++) {
if (minfos[i].getName().equals(name)
&& minfos[i].getType().startsWith(type)
&& modMatch.matches(minfos[i].getModifiers()))
return true;
}
ClassInfo[] ifaces = clazz.getInterfaces();
for (int i=0; i < ifaces.length; i++) {
if (containsMethod(ifaces[i], name, type, modMatch))
return true;
}
if (clazz.getSuperclass() != null) {
if (containsMethod(clazz.getSuperclass(),
name, type, modMatch))
return true;
}
return false;
}
public boolean containsFieldAliasDirectly(String fieldName, String typeSig,
ModifierMatcher matcher) {
for (int i=0; i < fieldCount; i++) {
for (Iterator i = fieldIdents.iterator(); i.hasNext(); ) {
Identifier ident = (Identifier) i.next();
if (((Main.stripping & Main.STRIP_UNREACH) == 0
|| identifiers[i].isReachable())
&& identifiers[i].wasAliased()
&& identifiers[i].getAlias().equals(fieldName)
&& identifiers[i].getType().startsWith(typeSig)
&& matcher.matches(identifiers[i]))
|| ident.isReachable())
&& ident.wasAliased()
&& ident.getAlias().equals(fieldName)
&& ident.getType().startsWith(typeSig)
&& matcher.matches(ident))
return true;
}
return false;
@ -882,119 +807,33 @@ public class ClassIdentifier extends Identifier {
public boolean containsMethodAliasDirectly(String methodName,
String paramType,
ModifierMatcher matcher) {
for (int i=fieldCount; i< identifiers.length; i++) {
for (Iterator i = methodIdents.iterator(); i.hasNext(); ) {
Identifier ident = (Identifier) i.next();
if (((Main.stripping & Main.STRIP_UNREACH) == 0
|| identifiers[i].isReachable())
&& identifiers[i].wasAliased()
&& identifiers[i].getAlias().equals(methodName)
&& identifiers[i].getType().startsWith(paramType)
&& matcher.matches(identifiers[i]))
|| ident.isReachable())
&& ident.wasAliased()
&& ident.getAlias().equals(methodName)
&& ident.getType().startsWith(paramType)
&& matcher.matches(ident))
return true;
}
return false;
}
public boolean containsFieldAlias(String fieldName, String typeSig,
ModifierMatcher matcher) {
if (containsFieldAliasDirectly(fieldName, typeSig, matcher))
return true;
ModifierMatcher packMatcher = matcher.forceAccess(0, true);
ClassInfo[] ifaces = info.getInterfaces();
for (int i=0; i < ifaces.length; i++) {
ClassIdentifier ifaceident = Main.getClassBundle()
.getClassIdentifier(ifaces[i].getName());
if (ifaceident != null) {
if (ifaceident.containsFieldAlias(fieldName, typeSig,
packMatcher))
return true;
} else {
if (containsField(ifaces[i], fieldName, typeSig,
packMatcher))
return true;
}
}
if (info.getSuperclass() != null) {
ClassIdentifier superident = Main.getClassBundle()
.getClassIdentifier(info.getSuperclass().getName());
if (superident != null) {
if (superident.containsFieldAlias(fieldName, typeSig,
packMatcher))
return true;
} else {
if (containsField(info.getSuperclass(),
fieldName, typeSig, packMatcher))
return true;
}
}
return false;
}
public boolean containsMethodAlias(String methodName, String typeSig,
ModifierMatcher matcher) {
if (containsMethodAliasDirectly(methodName,typeSig, matcher))
return true;
ModifierMatcher packMatcher = matcher.forceAccess(0, true);
ClassInfo[] ifaces = info.getInterfaces();
for (int i=0; i < ifaces.length; i++) {
ClassIdentifier ifaceident = Main.getClassBundle()
.getClassIdentifier(ifaces[i].getName());
if (ifaceident != null) {
if (ifaceident.containsMethodAlias(methodName, typeSig,
packMatcher))
return true;
} else {
if (containsMethod(ifaces[i], methodName, typeSig,
packMatcher))
return true;
}
}
if (info.getSuperclass() != null) {
ClassIdentifier superident = Main.getClassBundle()
.getClassIdentifier(info.getSuperclass().getName());
if (superident != null) {
if (superident.containsMethodAlias(methodName, typeSig,
packMatcher))
return true;
} else {
if (containsMethod(info.getSuperclass(),
methodName, typeSig, packMatcher))
return true;
}
}
return false;
}
public boolean fieldConflicts(FieldIdentifier field, String newAlias) {
String typeSig = (Main.options & Main.OPTION_STRONGOVERLOAD) != 0
? field.getType() : "";
/* Fields are special: They are not overriden but hidden. We
* must only take care, that the reference of every
* getfield/putfield opcode points to the exact class, afterwards
* we can use doubled name as much as we want.
*/
/* Fields are similar to static methods: They are not
* overriden but hidden. We must only take care, that the
* reference of every getfield/putfield opcode points to the
* exact class, afterwards we can use doubled name as much as
* we want (event the decompiler can handle this). */
ModifierMatcher mm = ModifierMatcher.allowAll;
if (containsFieldAliasDirectly(newAlias, typeSig, mm))
return true;
// boolean isPublic = (field.info.getModifier()
// & (Modifier.PROTECTED | Modifier.PUBLIC)) == 0;
// if (field.info.getModifier() & Modifier.PRIVATE != 0) {
// for (Iterator i = clazz.knownSubClasses.iterator();
// i.hasNext(); ) {
// ClassIdentifier ci = (ClassIdentifier) i.next();
// if ((isPublic || ci.getParent() == getParent())
// && ci.containsFieldAliasDirectly(newAlias, typeSig, mm))
// return true;
// }
// }
return false;
}
@ -1004,87 +843,51 @@ public class ClassIdentifier extends Identifier {
paramType = paramType.substring(0, paramType.indexOf(')')+1);
ModifierMatcher matcher = ModifierMatcher.allowAll;
if (containsMethodAlias(newAlias, paramType, matcher))
if (containsMethodAliasDirectly(newAlias, paramType, matcher))
return true;
ModifierMatcher packMatcher = matcher.forceAccess(0, true);
if (method.info.isStatic()) {
/* A static method does not conflict with static methods
* in super classes or sub classes.
*/
packMatcher.forbidModifier(Modifier.STATIC);
}
/* We don't have to check interfaces: sub classes must always
* implement all methods in the interface (maybe abstract, but
* they must be there!).
*/
ClassInfo superInfo = info.getSuperclass();
ClassIdentifier superIdent = this;
while (superInfo != null) {
ClassIdentifier superident = Main.getClassBundle()
.getClassIdentifier(superInfo.getName());
if (superident != null) {
if (superident.containsMethodAliasDirectly
(newAlias, paramType, packMatcher))
return true;
} else {
MethodInfo[] minfos = superInfo.getMethods();
for (int i=0; i< minfos.length; i++) {
if (minfos[i].getName().equals(newAlias)
&& minfos[i].getType().startsWith(paramType)
&& packMatcher.matches(minfos[i].getModifiers()))
return true;
}
}
superInfo = superInfo.getSuperclass();
}
if (packMatcher.matches(method)) {
for (Iterator i = knownSubClasses.iterator(); i.hasNext(); ) {
ClassIdentifier ci = (ClassIdentifier) i.next();
if (ci.containsMethodAliasDirectly(newAlias, paramType,
matcher))
packMatcher))
return true;
}
}
return false;
}
public static Object getMethod(ClassInfo clazz,
String methodName, String paramType) {
MethodInfo[] minfos = clazz.getMethods();
for (int i=0; i< minfos.length; i++) {
if (minfos[i].getName().equals(methodName)
&& minfos[i].getType().startsWith(paramType))
return minfos[i];
}
ClassInfo[] ifaces = clazz.getInterfaces();
for (int i=0; i < ifaces.length; i++) {
Object result = getMethod(ifaces[i], methodName, paramType);
if (result != null)
return result;
}
if (clazz.getSuperclass() != null) {
Object result = getMethod(clazz.getSuperclass(),
methodName, paramType);
if (result != null)
return result;
}
return null;
}
public Object getMethod(String methodName, String paramType) {
for (int i=fieldCount; i< identifiers.length; i++) {
if (((Main.stripping & Main.STRIP_UNREACH) == 0
|| identifiers[i].isReachable())
&& identifiers[i].getAlias().equals(methodName)
&& identifiers[i].getType().startsWith(paramType))
return identifiers[i];
}
ClassInfo[] ifaces = info.getInterfaces();
for (int i=0; i < ifaces.length; i++) {
ClassIdentifier ifaceident = Main.getClassBundle()
.getClassIdentifier(ifaces[i].getName());
if (ifaceident != null) {
Object result = ifaceident.getMethod(methodName, paramType);
if (result != null)
return result;
} else {
Object result = getMethod(ifaces[i], methodName, paramType);
if (result != null)
return result;
}
}
if (info.getSuperclass() != null) {
ClassIdentifier superident = Main.getClassBundle()
.getClassIdentifier(info.getSuperclass().getName());
if (superident != null) {
Object result = superident.getMethod(methodName, paramType);
if (result != null)
return result;
} else {
Object result = getMethod(info.getSuperclass(),
methodName, paramType);
if (result != null)
return result;
}
}
return null;
}
public boolean conflicting(String newAlias) {
return pack.contains(newAlias, this);
}

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