A JS script that intercepts the fetch prototype and overrides it to intercept POST requests
// ==UserScript==
// @name Fetch Intercept Userscript
// @namespace http://tampermonkey.net/
// @version 1.0
// @description A JS script that intercepts the fetch prototype and overrides it to intercept POST requests
// @author You
// @match https://academy.cs.cmu.edu/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=cmu.edu
// @grant none
// ==/UserScript==
//add any desired link addresses to block to the list
const blockingRequests = []
var originalFetch = window.fetch;
window.fetch = function(url, options){
if (url == "https://backend.academy.cs.cmu.edu/api/v0/submission/points/"){
const optionsBody = JSON.parse(options.body)
let submissionID = optionsBody.submission_id;
let fileVersion = optionsBody.file_version;
/*
@param {number} submissionID a 4 digit number that is created upon submission(is in link)
@param {number} points - a 1 digit number that represents the amount of points scored upon submission
| (NOTE - be very careful with setting it to high or to negative values - it can break the website/exercises)
@param {string} score - string that can have 2 possiblities "PASS" or "FAIL"
@param {arr} fileVersion - an array that contains 2 numbers that represent fileversion (should be kept the same)
*/
let jsonDefined = {
"submission_id": submissionID,
"points": 1,
"score": "PASS",
"file_version": fileVersion
}
options.body = JSON.stringify(jsonDefined);
console.log(`Found submission url: ${url}, ${options.body}`);
}
//elif not blocked url
if (blockingRequests.some(blockedUrl => url.includes(blockedUrl))){
console.log("Blocked Request in List:", url);
return Promise.reject(new Error("Blocked Request."))
}else{
return originalFetch.apply(this, arguments)
}
}