Convert to sessionStorage instead, added docs.
This commit is contained in:
parent
9f9865bccd
commit
ced81b356f
2 changed files with 36 additions and 24 deletions
|
|
@ -1,4 +1,6 @@
|
|||
# skillrack-captcha-solver
|
||||
Captcha solver for skillrack.
|
||||
|
||||
Use GreaseMonkey/TamperMonkey to run the script.
|
||||
Use GreaseMonkey/TamperMonkey to run the script.
|
||||
|
||||
__Note:__ Attempting to navigate the page while the captcha solver is running may lead to unintended effects. If it gets stuck in a loop, closing and opening the tabs will fix it.
|
||||
|
|
@ -19,24 +19,29 @@
|
|||
(function () {
|
||||
"use strict";
|
||||
|
||||
// Clear all sessionstorage data if going back out of solve.
|
||||
if (
|
||||
window.location.href ==
|
||||
"https://www.skillrack.com/faces/candidate/codeprogramgroup.xhtml"
|
||||
) {
|
||||
if (localStorage.getItem("Solvebtnid"))
|
||||
localStorage.removeItem("Solvebtnid");
|
||||
if (localStorage.getItem("captchaFail"))
|
||||
localStorage.removeItem("captchaFail");
|
||||
if (sessionStorage.getItem("Solvebtnid"))
|
||||
sessionStorage.removeItem("Solvebtnid");
|
||||
if (sessionStorage.getItem("captchaFail"))
|
||||
sessionStorage.removeItem("captchaFail");
|
||||
}
|
||||
|
||||
function onClick(event) {
|
||||
// Check if the clicked element is a button
|
||||
// Get solve button click
|
||||
if (
|
||||
event.target.tagName === "SPAN" &&
|
||||
event.target.parentNode.tagName === "BUTTON"
|
||||
) {
|
||||
// If so, log the button text
|
||||
if (event.target.textContent === "Solve") {
|
||||
localStorage.setItem("Solvebtnid", event.target.parentNode.id);
|
||||
// Store button id of problem solve button.
|
||||
sessionStorage.setItem(
|
||||
"Solvebtnid",
|
||||
event.target.parentNode.id
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -44,12 +49,15 @@
|
|||
|
||||
// Wait for window to load
|
||||
window.addEventListener("load", function () {
|
||||
if (localStorage.getItem("captchaFail")) {
|
||||
// Detect if last captcha attempt was a fail to re-nav back
|
||||
if (sessionStorage.getItem("captchaFail")) {
|
||||
console.log(
|
||||
"Detected captcha fail. Attempting to open last open page"
|
||||
"Detected captcha fail. Attempting to open last open page."
|
||||
);
|
||||
localStorage.removeItem("captchaFail");
|
||||
const old = localStorage.getItem("Solvebtnid");
|
||||
// Reset captcha state
|
||||
sessionStorage.removeItem("captchaFail");
|
||||
// Get old button id
|
||||
const old = sessionStorage.getItem("Solvebtnid");
|
||||
if (old) {
|
||||
const oldbutt = document.getElementById(old);
|
||||
if (oldbutt) oldbutt.click();
|
||||
|
|
@ -58,7 +66,8 @@
|
|||
}
|
||||
|
||||
console.log("Checking for captchas");
|
||||
// Step 1: Get the Image
|
||||
// Get the captcha
|
||||
// Different image ids for tutorial and track websites
|
||||
let image;
|
||||
if (
|
||||
window.location.href ==
|
||||
|
|
@ -78,6 +87,7 @@
|
|||
return;
|
||||
}
|
||||
|
||||
// Check if past captcha submission was a failure
|
||||
const errors = document.getElementsByClassName("ui-growl-item");
|
||||
if (errors.length > 0) {
|
||||
if (errors[0].textContent.includes("Incorrect Captcha")) {
|
||||
|
|
@ -88,37 +98,35 @@
|
|||
alert("Unable to solve captcha :(");
|
||||
return;
|
||||
}
|
||||
localStorage.setItem("captchaFail", "true");
|
||||
sessionStorage.setItem("captchaFail", "true");
|
||||
console.log("Detected failed attempt at solving captcha");
|
||||
const back = document.getElementById("j_id_5r");
|
||||
back.click();
|
||||
return;
|
||||
}
|
||||
}
|
||||
// Get time for logging
|
||||
const time = new Date().getTime();
|
||||
if (localStorage.getItem("captchaFail")) {
|
||||
localStorage.removeItem("captchaFail");
|
||||
|
||||
// Clear captcha state
|
||||
if (sessionStorage.getItem("captchaFail")) {
|
||||
sessionStorage.removeItem("captchaFail");
|
||||
}
|
||||
|
||||
// Invert colours for better ocr
|
||||
function invertColors(image) {
|
||||
const canvas = document.createElement("canvas");
|
||||
const ctx = canvas.getContext("2d");
|
||||
|
||||
// Set canvas dimensions to match the image
|
||||
canvas.width = image.width;
|
||||
canvas.height = image.height;
|
||||
|
||||
// Draw the image onto the canvas
|
||||
ctx.drawImage(image, 0, 0);
|
||||
|
||||
// Invert colors using globalCompositeOperation
|
||||
ctx.globalCompositeOperation = "difference";
|
||||
ctx.fillStyle = "white";
|
||||
ctx.fillRect(0, 0, canvas.width, canvas.height);
|
||||
return canvas.toDataURL();
|
||||
}
|
||||
|
||||
// Parse OCR result and solve the problem
|
||||
function getNums(text) {
|
||||
const a = text.replace(" ", "").replace("=", "").split("+");
|
||||
return parseInt(a[0]) + parseInt(a[1]);
|
||||
|
|
@ -126,14 +134,14 @@
|
|||
|
||||
const invertedimg = invertColors(image);
|
||||
console.log(`Converting image: ${new Date().getTime() - time} ms.`);
|
||||
// Step 2: Image Processing with Tesseract.js
|
||||
// Image Processing with Tesseract.js
|
||||
Tesseract.recognize(invertedimg, "eng", {
|
||||
whitelist: "1234567890+=",
|
||||
psm: 7,
|
||||
})
|
||||
.then(({ data: { text } }) => {
|
||||
console.log(`OCR: ${new Date().getTime() - time} ms.`);
|
||||
// Step 3: Solve the Math Problem
|
||||
// Solve the Math Problem
|
||||
try {
|
||||
const result = getNums(text);
|
||||
console.log(
|
||||
|
|
@ -141,6 +149,8 @@
|
|||
result
|
||||
);
|
||||
textbox.value = result;
|
||||
|
||||
// Click the submit button
|
||||
button.click();
|
||||
console.log(`Took ${new Date().getTime() - time} ms.`);
|
||||
} catch (e) {
|
||||
|
|
|
|||
Loading…
Reference in a new issue