Examples with MethodInfo jadx.core.dex.info.MethodInfo used on opensource projects

Example 1 with MethodInfo

use of jadx.core.dex.info.MethodInfo in project jadx by skylot.

the class RenameVisitor method checkMethods.

private void checkMethods(ClassNode cls) {
    Set<String> names = new HashSet<String>();
    for (MethodNode mth : cls.getMethods()) {
        if (mth.contains(AFlag.DONT_GENERATE)) {
            continue;
        }
        MethodInfo methodInfo = mth.getMethodInfo();
        String signature = makeMethodSignature(methodInfo);
        if (!names.add(signature)) {
            methodInfo.setAlias(deobfuscator.makeMethodAlias(mth));
        }
    }
}

Example 2 with MethodInfo

use of jadx.core.dex.info.MethodInfo in project jadx by skylot.

the class SimplifyVisitor method convertInvoke.

private static InsnNode convertInvoke(MethodNode mth, InsnNode insn) {
    MethodInfo callMth = ((InvokeNode) insn).getCallMth();
    // convert it to STRING_CONCAT pseudo instruction.
    if (callMth.getDeclClass().getFullName().equals(Consts.CLASS_STRING_BUILDER) && callMth.getShortId().equals(Consts.MTH_TOSTRING_SIGNATURE) && insn.getArg(0).isInsnWrap()) {
        try {
            List<InsnNode> chain = flattenInsnChain(insn);
            //RAF
            int constrIndex = -1;
            // string is created using .append() calls:
            if (chain.size() > 1 && chain.get(0).getType() == InsnType.CONSTRUCTOR) {
                constrIndex = 0;
            } else if (chain.size() > 2 && chain.get(1).getType() == InsnType.CONSTRUCTOR) {
                //RAF Case where the first string element is String arg to the
                // new StringBuilder("xxx") constructor
                constrIndex = 1;
            } else if (chain.size() > 3 && chain.get(2).getType() == InsnType.CONSTRUCTOR) {
                //RAF Case where the first string element is String.valueOf() arg
                // to the new StringBuilder(String.valueOf(zzz)) constructor
                constrIndex = 2;
            }
            if (constrIndex != -1) {
                // If we found a CONSTRUCTOR, is it a StringBuilder?
                ConstructorInsn constr = (ConstructorInsn) chain.get(constrIndex);
                if (constr.getClassType().getFullName().equals(Consts.CLASS_STRING_BUILDER)) {
                    int len = chain.size(), argInd = 1;
                    InsnNode concatInsn = new InsnNode(InsnType.STR_CONCAT, len - 1);
                    InsnNode argInsn;
                    if (constrIndex > 0) {
                        // There was an arg to the StringBuilder constr
                        InsnWrapArg iwa;
                        if (constrIndex == 2 && (argInsn = chain.get(1)).getType() == InsnType.INVOKE && ((InvokeNode) argInsn).getCallMth().getName().compareTo("valueOf") == 0) {
                            // The argument of new StringBuilder() is a String.valueOf(chainElement0)
                            iwa = (InsnWrapArg) argInsn.getArg(0);
                            // Cause for loop below to skip to after the constructor
                            argInd = 3;
                        } else {
                            InsnNode firstNode = chain.get(0);
                            if (firstNode instanceof ConstStringNode) {
                                ConstStringNode csn = (ConstStringNode) firstNode;
                                iwa = new InsnWrapArg(csn);
                                // Cause for loop below to skip to after the constructor
                                argInd = 2;
                            } else {
                                return null;
                            }
                        }
                        concatInsn.addArg(iwa);
                    }
                    for (; argInd < len; argInd++) {
                        // Add the .append(xxx) arg string to concat
                        concatInsn.addArg(chain.get(argInd).getArg(1));
                    }
                    concatInsn.setResult(insn.getResult());
                    return concatInsn;
                }
            // end of if constructor is for StringBuilder
            }
        // end of if we found a constructor early in the chain
        } catch (Throwable e) {
            LOG.debug("Can't convert string concatenation: {} insn: {}", mth, insn, e);
        }
    }
    return null;
}

Example 3 with MethodInfo

use of jadx.core.dex.info.MethodInfo in project jadx by skylot.

the class PostTypeInference method process.

public static boolean process(MethodNode mth, InsnNode insn) {
    DexNode dex = mth.dex();
    switch(insn.getType()) {
        case CONST:
            RegisterArg res = insn.getResult();
            LiteralArg litArg = (LiteralArg) insn.getArg(0);
            if (res.getType().isObject()) {
                long lit = litArg.getLiteral();
                if (lit != 0) {
                    // incorrect literal value for object
                    ArgType type = lit == 1 ? ArgType.BOOLEAN : ArgType.INT;
                    // can't merge with object -> force it
                    litArg.setType(type);
                    res.getSVar().setType(type);
                    return true;
                }
            }
            return litArg.merge(dex, res);
        case MOVE:
            {
                boolean change = false;
                if (insn.getResult().merge(dex, insn.getArg(0))) {
                    change = true;
                }
                if (insn.getArg(0).merge(dex, insn.getResult())) {
                    change = true;
                }
                return change;
            }
        case AGET:
            return fixArrayTypes(dex, insn.getArg(0), insn.getResult());
        case APUT:
            return fixArrayTypes(dex, insn.getArg(0), insn.getArg(2));
        case IF:
            {
                boolean change = false;
                if (insn.getArg(1).merge(dex, insn.getArg(0))) {
                    change = true;
                }
                if (insn.getArg(0).merge(dex, insn.getArg(1))) {
                    change = true;
                }
                return change;
            }
        // check argument types for overloaded methods
        case INVOKE:
            {
                boolean change = false;
                InvokeNode inv = (InvokeNode) insn;
                MethodInfo callMth = inv.getCallMth();
                MethodNode node = mth.dex().resolveMethod(callMth);
                if (node != null && node.isArgsOverload()) {
                    List<ArgType> args = callMth.getArgumentsTypes();
                    int j = inv.getArgsCount() - 1;
                    for (int i = args.size() - 1; i >= 0; i--) {
                        ArgType argType = args.get(i);
                        InsnArg insnArg = inv.getArg(j--);
                        if (insnArg.isRegister() && !argType.equals(insnArg.getType())) {
                            insnArg.setType(argType);
                            change = true;
                        }
                    }
                }
                return change;
            }
        case CHECK_CAST:
            {
                ArgType castType = (ArgType) ((IndexInsnNode) insn).getIndex();
                RegisterArg result = insn.getResult();
                ArgType resultType = result.getType();
                // don't override generic types of same base class
                boolean skip = castType.isObject() && resultType.isObject() && castType.getObject().equals(resultType.getObject());
                if (!skip) {
                    // workaround for compiler bug (see TestDuplicateCast)
                    result.getSVar().setType(castType);
                }
                return true;
            }
        case PHI:
        case MERGE:
            {
                ArgType type = insn.getResult().getType();
                if (!type.isTypeKnown()) {
                    for (InsnArg arg : insn.getArguments()) {
                        if (arg.getType().isTypeKnown()) {
                            type = arg.getType();
                            break;
                        }
                    }
                }
                boolean changed = false;
                if (updateType(insn.getResult(), type)) {
                    changed = true;
                }
                for (int i = 0; i < insn.getArgsCount(); i++) {
                    RegisterArg arg = (RegisterArg) insn.getArg(i);
                    if (updateType(arg, type)) {
                        changed = true;
                    }
                }
                return changed;
            }
        default:
            break;
    }
    return false;
}

Example 4 with MethodInfo

use of jadx.core.dex.info.MethodInfo in project jadx by skylot.

the class InsnGen method makeInvoke.

private void makeInvoke(InvokeNode insn, CodeWriter code) throws CodegenException {
    MethodInfo callMth = insn.getCallMth();
    // inline method
    MethodNode callMthNode = mth.dex().deepResolveMethod(callMth);
    if (callMthNode != null) {
        if (inlineMethod(callMthNode, insn, code)) {
            return;
        }
        callMth = callMthNode.getMethodInfo();
    }
    int k = 0;
    InvokeType type = insn.getInvokeType();
    switch(type) {
        case DIRECT:
        case VIRTUAL:
        case INTERFACE:
            InsnArg arg = insn.getArg(0);
            // FIXME: add 'this' for equals methods in scope
            if (!arg.isThis()) {
                addArgDot(code, arg);
            }
            k++;
            break;
        case SUPER:
            // use 'super' instead 'this' in 0 arg
            code.add("super").add('.');
            k++;
            break;
        case STATIC:
            ClassInfo insnCls = mth.getParentClass().getAlias();
            ClassInfo declClass = callMth.getDeclClass();
            if (!insnCls.equals(declClass)) {
                useClass(code, declClass);
                code.add('.');
            }
            break;
    }
    if (callMthNode != null) {
        code.attachAnnotation(callMthNode);
    }
    code.add(callMth.getAlias());
    generateMethodArguments(code, insn, k, callMthNode);
}

Example 5 with MethodInfo

use of jadx.core.dex.info.MethodInfo in project jadx by skylot.

the class DeobfPresets method dumpMapping.

/**
	 * Saves DefaultDeobfuscator presets
	 */
private void dumpMapping() throws IOException {
    List<String> list = new ArrayList<String>();
    // packages
    for (PackageNode p : deobfuscator.getRootPackage().getInnerPackages()) {
        for (PackageNode pp : p.getInnerPackages()) {
            dfsPackageName(list, p.getName(), pp);
        }
        if (p.hasAlias()) {
            list.add(String.format("p %s = %s", p.getName(), p.getAlias()));
        }
    }
    // classes
    for (DeobfClsInfo deobfClsInfo : deobfuscator.getClsMap().values()) {
        if (deobfClsInfo.getAlias() != null) {
            list.add(String.format("c %s = %s", deobfClsInfo.getCls().getClassInfo().getFullName(), deobfClsInfo.getAlias()));
        }
    }
    for (FieldInfo fld : deobfuscator.getFldMap().keySet()) {
        list.add(String.format("f %s = %s", fld.getFullId(), fld.getAlias()));
    }
    for (MethodInfo mth : deobfuscator.getMthMap().keySet()) {
        list.add(String.format("m %s = %s", mth.getFullId(), mth.getAlias()));
    }
    Collections.sort(list);
    FileUtils.writeLines(deobfMapFile, MAP_FILE_CHARSET, list);
    list.clear();
}