artem-smotrakov

JexlSandbox sandbox = new JexlSandbox(false);
sandbox.white("com.safe.Functions");
JexlEngine jexl = new JexlBuilder().sandbox(sandbox).create();
JexlExpression expression = jexl.createExpression(str);
JexlContext context = new MapContext();
expression.evaluate(context);

artem-smotrakov

private void handle(HttpRequest request) {
    if (request.hasParameter("questionToBackend")) {
        String expr = request.getParameter("questionToBackend"));
        JexlEngine jexl = new JexlBuilder().create();
        JexlExpression expression = jexl.createExpression(expr);
        JexlContext context = new MapContext();
        Object object = expression.evaluate(context);
        handleResult(object);
    } else {
        callNextHandler(request);

artem-smotrakov

String str = "''.getClass().forName('java.lang.Runtime').getRuntime().exec('calc')";
JexlEngine jexl = new JexlBuilder().create();
JexlExpression expression = jexl.createExpression(str);
JexlContext context = new MapContext();
e.evaluate(context);

artem-smotrakov

from machine import ADC, Pin
import time


class LDR:
    """This class read a value from a light dependent resistor (LDR)"""

    def __init__(self, pin, min_value=0, max_value=100):
        """
        Initializes a new instance.

artem-smotrakov

# this class measures CO2 with MH-Z19B sensor
class MHZ19BSensor:

    # initializes a new instance
    def __init__(self, tx_pin, rx_pin, lights, co2_threshold):
        self.uart = UART(1, baudrate=9600, bits=8, parity=None, stop=1, tx=int(tx_pin), rx=int(rx_pin))
        self.lights = lights
        self.co2_threshold = int(co2_threshold)

    # measure CO2

artem-smotrakov

class A {
    public B b;
}

class B {
    public C[] array = new C[] { null };
}

class C {
    public String string;

artem-smotrakov

public class TranslateHttpCode {

    public static void main(String[] args) {
        for (String arg : args) {
            int code = Integer.valueOf(arg);
            System.out.printf("%d -> %s%n", code, translate(code));
        }
    }

    static String translate(int code) {

artem-smotrakov

public class Tribonacci {

    public static void main(String[] args) {
        for (String arg : args) {
            int n = Integer.valueOf(arg);
            System.out.printf("Tribonacci(%d) = %d%n", n, tribonacci(n));
        }
    }

    static int tribonacci(int n) {

artem-smotrakov

public class Fibonacci {

    public static void main(String[] args) {
        for (String arg : args) {
            int n = Integer.valueOf(arg);
            System.out.printf("Fibonacci(%d) = %d%n", n, fibonacci(n));
        }
    }

    static int fibonacci(int n) {

artem-smotrakov

public class StrangeYield {

    public static void main(String[] args) {
        go(0);
    }

    static void go(int n) {
        System.out.println(
            switch (n) {
                case 42 -> "Fotry-two";