Examples with ConstStringNode jadx.core.dex.instructions.ConstStringNode used on opensource projects

Example 1 with ConstStringNode

use of jadx.core.dex.instructions.ConstStringNode 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 2 with ConstStringNode

use of jadx.core.dex.instructions.ConstStringNode in project jadx by skylot.

the class InsnUtils method getConstValueByInsn.

/**
	 * Return constant value from insn or null if not constant.
	 *
	 * @return LiteralArg, String, ArgType or null
	 */
@Nullable
public static Object getConstValueByInsn(DexNode dex, InsnNode insn) {
    switch(insn.getType()) {
        case CONST:
            return insn.getArg(0);
        case CONST_STR:
            return ((ConstStringNode) insn).getString();
        case CONST_CLASS:
            return ((ConstClassNode) insn).getClsType();
        case SGET:
            FieldInfo f = (FieldInfo) ((IndexInsnNode) insn).getIndex();
            FieldNode fieldNode = dex.resolveField(f);
            if (fieldNode != null) {
                FieldInitAttr attr = fieldNode.get(AType.FIELD_INIT);
                if (attr != null) {
                    return attr.getValue();
                }
            } else {
                LOG.warn("Field {} not found in dex {}", f, dex);
            }
            break;
    }
    return null;
}

Example 3 with ConstStringNode

use of jadx.core.dex.instructions.ConstStringNode in project jadx by skylot.

the class InsnGen method makeInsnBody.

private void makeInsnBody(CodeWriter code, InsnNode insn, Set<Flags> state) throws CodegenException {
    switch(insn.getType()) {
        case CONST_STR:
            String str = ((ConstStringNode) insn).getString();
            code.add(mth.dex().root().getStringUtils().unescapeString(str));
            break;
        case CONST_CLASS:
            ArgType clsType = ((ConstClassNode) insn).getClsType();
            useType(code, clsType);
            code.add(".class");
            break;
        case CONST:
            LiteralArg arg = (LiteralArg) insn.getArg(0);
            code.add(lit(arg));
            break;
        case MOVE:
            addArg(code, insn.getArg(0), false);
            break;
        case CHECK_CAST:
        case CAST:
            {
                boolean wrap = state.contains(Flags.BODY_ONLY);
                if (wrap) {
                    code.add('(');
                }
                code.add('(');
                useType(code, (ArgType) ((IndexInsnNode) insn).getIndex());
                code.add(") ");
                addArg(code, insn.getArg(0), true);
                if (wrap) {
                    code.add(')');
                }
                break;
            }
        case ARITH:
            makeArith((ArithNode) insn, code, state);
            break;
        case NEG:
            {
                boolean wrap = state.contains(Flags.BODY_ONLY);
                if (wrap) {
                    code.add('(');
                }
                code.add('-');
                addArg(code, insn.getArg(0));
                if (wrap) {
                    code.add(')');
                }
                break;
            }
        case RETURN:
            if (insn.getArgsCount() != 0) {
                code.add("return ");
                addArg(code, insn.getArg(0), false);
            } else {
                code.add("return");
            }
            break;
        case BREAK:
            code.add("break");
            LoopLabelAttr labelAttr = insn.get(AType.LOOP_LABEL);
            if (labelAttr != null) {
                code.add(' ').add(mgen.getNameGen().getLoopLabel(labelAttr));
            }
            break;
        case CONTINUE:
            code.add("continue");
            break;
        case THROW:
            code.add("throw ");
            addArg(code, insn.getArg(0), true);
            break;
        case CMP_L:
        case CMP_G:
            code.add('(');
            addArg(code, insn.getArg(0));
            code.add(" > ");
            addArg(code, insn.getArg(1));
            code.add(" ? 1 : (");
            addArg(code, insn.getArg(0));
            code.add(" == ");
            addArg(code, insn.getArg(1));
            code.add(" ? 0 : -1))");
            break;
        case INSTANCE_OF:
            {
                boolean wrap = state.contains(Flags.BODY_ONLY);
                if (wrap) {
                    code.add('(');
                }
                addArg(code, insn.getArg(0));
                code.add(" instanceof ");
                useType(code, (ArgType) ((IndexInsnNode) insn).getIndex());
                if (wrap) {
                    code.add(')');
                }
                break;
            }
        case CONSTRUCTOR:
            makeConstructor((ConstructorInsn) insn, code);
            break;
        case INVOKE:
            makeInvoke((InvokeNode) insn, code);
            break;
        case NEW_ARRAY:
            {
                ArgType arrayType = ((NewArrayNode) insn).getArrayType();
                code.add("new ");
                useType(code, arrayType.getArrayRootElement());
                code.add('[');
                addArg(code, insn.getArg(0));
                code.add(']');
                int dim = arrayType.getArrayDimension();
                for (int i = 0; i < dim - 1; i++) {
                    code.add("[]");
                }
                break;
            }
        case ARRAY_LENGTH:
            addArg(code, insn.getArg(0));
            code.add(".length");
            break;
        case FILLED_NEW_ARRAY:
            filledNewArray((FilledNewArrayNode) insn, code);
            break;
        case AGET:
            addArg(code, insn.getArg(0));
            code.add('[');
            addArg(code, insn.getArg(1), false);
            code.add(']');
            break;
        case APUT:
            addArg(code, insn.getArg(0));
            code.add('[');
            addArg(code, insn.getArg(1), false);
            code.add("] = ");
            addArg(code, insn.getArg(2), false);
            break;
        case IGET:
            {
                FieldInfo fieldInfo = (FieldInfo) ((IndexInsnNode) insn).getIndex();
                instanceField(code, fieldInfo, insn.getArg(0));
                break;
            }
        case IPUT:
            {
                FieldInfo fieldInfo = (FieldInfo) ((IndexInsnNode) insn).getIndex();
                instanceField(code, fieldInfo, insn.getArg(1));
                code.add(" = ");
                addArg(code, insn.getArg(0), false);
                break;
            }
        case SGET:
            staticField(code, (FieldInfo) ((IndexInsnNode) insn).getIndex());
            break;
        case SPUT:
            FieldInfo field = (FieldInfo) ((IndexInsnNode) insn).getIndex();
            staticField(code, field);
            code.add(" = ");
            addArg(code, insn.getArg(0), false);
            break;
        case STR_CONCAT:
            boolean wrap = state.contains(Flags.BODY_ONLY);
            if (wrap) {
                code.add('(');
            }
            for (Iterator<InsnArg> it = insn.getArguments().iterator(); it.hasNext(); ) {
                addArg(code, it.next());
                if (it.hasNext()) {
                    code.add(" + ");
                }
            }
            if (wrap) {
                code.add(')');
            }
            break;
        case MONITOR_ENTER:
            if (isFallback()) {
                code.add("monitor-enter(");
                addArg(code, insn.getArg(0));
                code.add(')');
            }
            break;
        case MONITOR_EXIT:
            if (isFallback()) {
                code.add("monitor-exit(");
                addArg(code, insn.getArg(0));
                code.add(')');
            }
            break;
        case TERNARY:
            makeTernary((TernaryInsn) insn, code, state);
            break;
        case ONE_ARG:
            addArg(code, insn.getArg(0));
            break;
        /* fallback mode instructions */
        case IF:
            fallbackOnlyInsn(insn);
            IfNode ifInsn = (IfNode) insn;
            code.add("if (");
            addArg(code, insn.getArg(0));
            code.add(' ');
            code.add(ifInsn.getOp().getSymbol()).add(' ');
            addArg(code, insn.getArg(1));
            code.add(") goto ").add(MethodGen.getLabelName(ifInsn.getTarget()));
            break;
        case GOTO:
            fallbackOnlyInsn(insn);
            code.add("goto ").add(MethodGen.getLabelName(((GotoNode) insn).getTarget()));
            break;
        case MOVE_EXCEPTION:
            fallbackOnlyInsn(insn);
            code.add("move-exception");
            break;
        case SWITCH:
            fallbackOnlyInsn(insn);
            SwitchNode sw = (SwitchNode) insn;
            code.add("switch(");
            addArg(code, insn.getArg(0));
            code.add(") {");
            code.incIndent();
            for (int i = 0; i < sw.getCasesCount(); i++) {
                String key = sw.getKeys()[i].toString();
                code.startLine("case ").add(key).add(": goto ");
                code.add(MethodGen.getLabelName(sw.getTargets()[i])).add(';');
            }
            code.startLine("default: goto ");
            code.add(MethodGen.getLabelName(sw.getDefaultCaseOffset())).add(';');
            code.decIndent();
            code.startLine('}');
            break;
        case FILL_ARRAY:
            fallbackOnlyInsn(insn);
            FillArrayNode arrayNode = (FillArrayNode) insn;
            Object data = arrayNode.getData();
            String arrStr;
            if (data instanceof int[]) {
                arrStr = Arrays.toString((int[]) data);
            } else if (data instanceof short[]) {
                arrStr = Arrays.toString((short[]) data);
            } else if (data instanceof byte[]) {
                arrStr = Arrays.toString((byte[]) data);
            } else if (data instanceof long[]) {
                arrStr = Arrays.toString((long[]) data);
            } else {
                arrStr = "?";
            }
            code.add('{').add(arrStr.substring(1, arrStr.length() - 1)).add('}');
            break;
        case NEW_INSTANCE:
            // only fallback - make new instance in constructor invoke
            fallbackOnlyInsn(insn);
            code.add("new ").add(insn.getResult().getType().toString());
            break;
        case PHI:
        case MERGE:
            fallbackOnlyInsn(insn);
            code.add(insn.getType().toString()).add("(");
            for (InsnArg insnArg : insn.getArguments()) {
                addArg(code, insnArg);
                code.add(' ');
            }
            code.add(")");
            break;
        default:
            throw new CodegenException(mth, "Unknown instruction: " + insn.getType());
    }
}