Merge pull request #17 from EthanHarv/main

Auto-account.

README.md

@@ -7,6 +7,12 @@
   - Firefox : 90.0
 - Test time : 2021/07/14
 
+# WARNING:
+
+This extension logs you out of your normal quizlet account.
+
+You can disable and re-enable it by going to `chrome://extensions/` on chrome and `about:addons` in firefox.
+
 # Screenshot
 
 ## Before install

slader-limit-bypass/js/katex/autorender.js

@@ -1 +0,0 @@
-!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t(require("katex")):"function"==typeof define&&define.amd?define(["katex"],t):"object"==typeof exports?exports.renderMathInElement=t(require("katex")):e.renderMathInElement=t(e.katex)}("undefined"!=typeof self?self:this,(function(e){return function(){"use strict";var t={974:function(t){t.exports=e}},r={};function n(e){var a=r[e];if(void 0!==a)return a.exports;var i=r[e]={exports:{}};return t[e](i,i.exports,n),i.exports}n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,{a:t}),t},n.d=function(e,t){for(var r in t)n.o(t,r)&&!n.o(e,r)&&Object.defineProperty(e,r,{enumerable:!0,get:t[r]})},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)};var a={};return function(){n.d(a,{default:function(){return s}});var e=n(974),t=n.n(e),r=function(e,t,r){for(var n=r,a=0,i=e.length;n<t.length;){var o=t[n];if(a<=0&&t.slice(n,n+i)===e)return n;"\\"===o?n++:"{"===o?a++:"}"===o&&a--,n++}return-1},i=/^\\begin{/,o=function(e,t){for(var n,a=[],o=new RegExp("("+t.map((function(e){return e.left.replace(/[-/\\^$*+?.()|[\]{}]/g,"\\$&")})).join("|")+")");-1!==(n=e.search(o));){n>0&&(a.push({type:"text",data:e.slice(0,n)}),e=e.slice(n));var l=t.findIndex((function(t){return e.startsWith(t.left)}));if(-1===(n=r(t[l].right,e,t[l].left.length)))break;var d=e.slice(0,n+t[l].right.length),s=i.test(d)?d:e.slice(t[l].left.length,n);a.push({type:"math",data:s,rawData:d,display:t[l].display}),e=e.slice(n+t[l].right.length)}return""!==e&&a.push({type:"text",data:e}),a},l=function(e,r){var n=o(e,r.delimiters);if(1===n.length&&"text"===n[0].type)return null;for(var a=document.createDocumentFragment(),i=0;i<n.length;i++)if("text"===n[i].type)a.appendChild(document.createTextNode(n[i].data));else{var l=document.createElement("span"),d=n[i].data;r.displayMode=n[i].display;try{r.preProcess&&(d=r.preProcess(d)),t().render(d,l,r)}catch(e){if(!(e instanceof t().ParseError))throw e;r.errorCallback("KaTeX auto-render: Failed to parse `"+n[i].data+"` with ",e),a.appendChild(document.createTextNode(n[i].rawData));continue}a.appendChild(l)}return a},d=function e(t,r){for(var n=0;n<t.childNodes.length;n++){var a=t.childNodes[n];if(3===a.nodeType){var i=l(a.textContent,r);i&&(n+=i.childNodes.length-1,t.replaceChild(i,a))}else 1===a.nodeType&&function(){var t=" "+a.className+" ";-1===r.ignoredTags.indexOf(a.nodeName.toLowerCase())&&r.ignoredClasses.every((function(e){return-1===t.indexOf(" "+e+" ")}))&&e(a,r)}()}},s=function(e,t){if(!e)throw new Error("No element provided to render");var r={};for(var n in t)t.hasOwnProperty(n)&&(r[n]=t[n]);r.delimiters=r.delimiters||[{left:"$$",right:"$$",display:!0},{left:"\\(",right:"\\)",display:!1},{left:"\\begin{equation}",right:"\\end{equation}",display:!0},{left:"\\begin{align}",right:"\\end{align}",display:!0},{left:"\\begin{alignat}",right:"\\end{alignat}",display:!0},{left:"\\begin{gather}",right:"\\end{gather}",display:!0},{left:"\\begin{CD}",right:"\\end{CD}",display:!0},{left:"\\[",right:"\\]",display:!0}],r.ignoredTags=r.ignoredTags||["script","noscript","style","textarea","pre","code","option"],r.ignoredClasses=r.ignoredClasses||[],r.errorCallback=r.errorCallback||console.error,r.macros=r.macros||{},d(e,r)}}(),a=a.default}()}));

slader-limit-bypass/js/quizlet_bypass.js

@@ -1,161 +1,115 @@
-// TODO: Sidestep race condition in a less patchwork manner
-setTimeout(function(){ renderBypass(); /* TODO: Check if it actually went through */ }, 1250);
+// Remove 'x' free solutions badge and "verify your email" badge.
+if (document.querySelector('.BannerWrapper')) { document.querySelector('.BannerWrapper').style.display = "none"; }
+if (document.querySelector('.UINotification')) { document.querySelector('.UINotification').style.display = "none"; }
 
+checkIfNewAccountNeeded();
 
-function renderBypass()
+function checkIfNewAccountNeeded()
 {
-    // Setup page elements
-    
-    //Get Katex CSS
-    var katex_css = document.createElement('link');
-    katex_css.setAttribute('rel','stylesheet');
-    katex_css.setAttribute('href','https://cdn.jsdelivr.net/npm/katex@0.13.11/dist/katex.min.css ');
-    document.head.appendChild(katex_css);
+    // Three cases: Almost out of solutions, not logged in at all, or out of solutions.
 
-    // Get the webpage data, devoid of any headers or cookies. Acts as if the user is not logged in at all.
-    doFetch(window.location).then(data => { processData(data); })
-
-}
-function processData(data){
-    // Clear the "hidden explanation" out and replace it with a blank explanation area.
-    // The innermost item is ".s1i7awl8"
-    document.querySelector('main .mwhvwas').innerHTML = '<div class="c18oith1 sladerBypass"><div class="s1oluvjw"><h4 class="h1cwp1lk">Explanation</h4><div class="as7m9cv snqbbas"><div data-testid="ExplanationsSolution" class="e1sw891e"><div class="s1i7awl8"></div></div></div></div></div>';
-    var expArea = document.querySelector('.sladerBypass .s1i7awl8')
-
-    // Render new stuff
-
-    // Is this an abomination? Yes.
-    // Does it work? Also yes.
-    //
-    // ...
-    // 
-    // I don't want to talk about it.
-    //
-    var json = data.match(/(?<=window.Quizlet\["(questionDetailsPageData|textbookExercisePageData)"] = ).+?(?=; QLoad\("Quizlet.(questionDetailsPageData|textbookExercisePageData)")/gm);
-    if (!json)
+    // Almost out of solutions
+    if (pageContains("This is your last free explanation"))
     {
-        // Display ratelimit message
-        expArea.innerHTML = `<div style="color: red;"><h1>You have been ratelimited by Quizlet</h1><br>Try clearing your cookies for Quizlet and reloading this page, this usually fixes it.<br>— Slader Bypass.</div>`;
+        // Don't reload, not actually out of solutions yet.
+        signUpNewAccount(false);
+    }
+    // Not logged in
+    else if (pageContains("Create a free account to see explanations"))
+    {
+        signUpNewAccount(true);
+    }
+    // Out of solutions
+    else if (pageContains("YOU'VE REACHED YOUR FREE LIMIT"))
+    {
+        signUpNewAccount(true);
     }
 
-    // Parse JSON data
-    var qDetails = JSON.parse(json[0]);
-    var solutions = (qDetails.question || qDetails.exercise).solutions;
-    // Display JSON data as answer
-    solutionNum = 0;
-    solutions.forEach(solution => {
-        solutionNum++;
-        expArea.appendChild(document.createElement('hr'));
-        var h1 = document.createElement('h1');
-        h1.textContent = 'Solution ' + solutionNum + ":";
-        expArea.appendChild(h1);
 
-        const numSteps = solution.steps.length;
-        solution.steps.forEach(step => {
-            const stepNum = step.stepNumber;
-            // Create card element
-            var div = document.createElement('div');
-            // Insert boilerplate card data
-            div.innerHTML = '<div class="r8gl7vf" data-testid="ExplanationsSolutionStep" style="padding-top: 0.8rem;"><div class="AssemblyCard AssemblyMediumCard"><div class="ExplanationsSolutionCard c5ngj6s"><div class="h1ejaztj"><h4 class="s39tzu2"></h4><span class="sb9ch1t"></span></div><div class="s1wwu7g8"><div class="s1x7f4sz"><div class=""><div class="s1xkd811"><div class="mi4ni5d sladerBypassKatex" style="white-space: pre-wrap;"></div></div></div></div></div></div></div></div>';
-            // Step X: .s39tzu2
-            div.querySelector('.s39tzu2').textContent = (numSteps === stepNum) ? "Result" : "Step " + stepNum;
-            // x of x: .sb9ch1t
-            div.querySelector('.sb9ch1t').textContent = stepNum + ' of ' + numSteps;
-            
-            // I'm not 100% on the structure of these, but I'll take a stab at it.
-            // It seems that only one column is ever used. I'll iterate anyways, because I can't trust that.
-            step.columns.forEach(column => {
-                var columnDiv = document.createElement('div');
-                // Insert inner text
-                if (column.text)
-                {
-                    var textDiv = document.createElement('div');
-                    textDiv.classList.add('sladerBypassKatexTextArea');
-                    textDiv.textContent = column.text.replaceAll('\n\n\n', '\n\n'); // The replace call is a bit funky but it works.
-                    columnDiv.appendChild(textDiv);
-                }
-                // Insert image, if applicable
-                if (column.images.additional)
-                {
-                    var image = document.createElement('img');
-                    image.setAttribute('src', column.images.additional.regular.srcUrl);
-                    columnDiv.appendChild(image);
-                }
-                // Append server-rendered image src url. Used in errorhandling. (See: handleKatexError())
-                if (column.images.latex && column.images.latex.large)
-                {
-                    div.querySelector('.sladerBypassKatex').setAttribute('katexsrc', column.images.latex.large.srcUrl);
-                }
-
-                // handle hasInvalidKatex
-                if(column.hasInvalidKatex)
-                    div.querySelector('.sladerBypassKatex').setAttribute('InvalidKatex', "true");
-                
-                div.querySelector('.sladerBypassKatex').appendChild(columnDiv);
-            });
-            
-            // Append card to explanation area.
-            expArea.appendChild(div);
-        });
-    });
-
-    // Render Katex for each card
-    expArea.querySelectorAll('.sladerBypassKatex').forEach(textArea => {
-        try {
-            if(!textArea.hasAttribute("InvalidKatex")){
-                renderMathInElement(textArea, {
-                    delimiters: [
-                        {left: "$$", right: "$$", display: true},
-                        {left: "$", right: "$", display: false},
-                        {left: "\\(", right: "\\)", display: false},
-                        {left: "\\begin{equation}", right: "\\end{equation}", display: true},
-                        {left: "\\begin{align}", right: "\\end{align}", display: true},
-                        {left: "\\begin{alignat}", right: "\\end{alignat}", display: true},
-                        {left: "\\begin{gather}", right: "\\end{gather}", display: true},
-                        {left: "\\begin{CD}", right: "\\end{CD}", display: true},
-                        {left: "\\[", right: "\\]", display: true}
-                      ],
-                    throwOnError : true,
-                    errorCallback : function(a, b){ handleKatexError(a, b, textArea); }
-                });
-            }
-            else{
-                // sometimes even hasInvalidKatex, textArea still can render without error
-                handleKatexError("hasInvalidKatex","hasInvalidKatex", textArea);
-            }
-        } catch (error) {
-            console.error('Katex experienced an error. Attempting to load image replacement.');
-        }
-    });
-};
-
-function handleKatexError(a, b, textArea)
-{
-    // Display Katex error
-    console.error(a);
-    console.error(b);
-
-    // Remove broken Katex
-    textArea.querySelector('.sladerBypassKatexTextArea').innerHTML = '';
-
-    // Fallback to server-rendered katex (I'm assuming they have better error detection there.)
-    var image = document.createElement('img');
-    image.setAttribute('src', textArea.getAttribute('katexsrc'));
-    textArea.appendChild(image);
+    // Catchall for logged out entirely.
+    else if (!isLoggedIn())
+    {
+        signUpNewAccount(true);
+    }
+    // Catchall for out of solutions
+    else if (pageContains('source=explanations_meter_exceeded'))
+    {
+        signUpNewAccount(true);
+    }
 }
 
-async function doFetch(url)
+function signUpNewAccount(doesReload)
 {
-    const response = await fetch(url, {
-        method: 'GET', // *GET, POST, PUT, DELETE, etc.
-        mode: 'cors', // no-cors, *cors, same-origin
-        cache: 'no-cache', // *default, no-cache, reload, force-cache, only-if-cached
-        credentials: 'omit', // include, *same-origin, omit
-        headers: {
+    // We're just gonna assume this is a large enough characterspace for it to never matter.
+    var name = "sq_bypass_" + randomString(10, '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
+
+    var request = fetch("https://quizlet.com/webapi/3.2/direct-signup", {
+        "headers": {
+            "accept": "application/json",
+            "accept-language": "en-US,en;q=0.9",
+            "content-type": "application/json",
+            "cs-token": getToken(),
+            "sec-ch-ua": "\" Not;A Brand\";v=\"99\", \"Google Chrome\";v=\"91\", \"Chromium\";v=\"91\"",
+            "sec-ch-ua-mobile": "?0",
+            "sec-fetch-dest": "empty",
+            "sec-fetch-mode": "cors",
+            "sec-fetch-site": "same-origin",
+            "x-requested-with": "XMLHttpRequest"
         },
-        redirect: 'follow', // manual, *follow, error
-        referrerPolicy: 'no-referrer', // no-referrer, *no-referrer-when-downgrade, origin, origin-when-cross-origin, same-origin, strict-origin, strict-origin-when-cross-origin, unsafe-url
-        body: null // body data type must match "Content-Type" header
+        "referrer": "https://quizlet.com/goodbye",
+        "referrerPolicy": "origin-when-cross-origin",
+        "body": "{\"TOS\":false,\"birth_day\":\"5\",\"birth_month\":\"5\",\"birth_year\":\"2000\",\"email\":\"" + name + "@example.com\",\"is_free_teacher\":\"2\",\"is_parent\":false,\"password1\":\"SladerBypassPassword\",\"redir\":\"https://quizlet.com/goodbye\",\"signupOrigin\":\"global-header-link\",\"screenName\":\"Logout/logoutMobileSplash\",\"username\":\"" + name + "\",\"marketing_opt_out\":false}",
+        "method": "POST",
+        "mode": "cors",
+        "credentials": "include"
+    }).then(function()
+    {
+        if (doesReload)
+        {
+            location.reload();
+        }
     });
-    return response.text();
+    return true;
+};
+
+function randomString(length, chars) {
+    var result = '';
+    for (var i = length; i > 0; --i) result += chars[Math.floor(Math.random() * chars.length)];
+    return result;
+};
+
+function getToken(){
+    token = document.cookie.match("(?:^|;)\\s*" + "qtkn".replace(/[\-\[\]{}()*+?.,\\^$|#\s]/g, "$&") + "=([^;]*)");
+    return decodeURIComponent(token[1]);
+};
+
+function pageContains(str)
+{
+    if (document.body.innerHTML.match(str))
+    {
+        return true;
+    }
+    else
+    {
+        return false;
+    }
+}
+
+function isLoggedIn()
+{
+    // Looks for `{"LOGGED_IN":false,` in the header.
+    var li = document.head.innerHTML.match(/(?<="LOGGED_IN":)\w[^,]*/)[0];
+
+    if (li === "false")
+    {
+        return false;
+    }
+    else if (li === "true")
+    {
+        return true;
+    }
+    else
+    {
+        return true; // Return true on possible error to prevent explosion of accounts. Effectively assumes logged in on error.
+    }
 }

slader-limit-bypass/manifest.json

@@ -1,6 +1,6 @@
 {
   "name": "slader bypass",
-  "version": "0.8",
+  "version": "0.10",
   "author":"Alan Li & Ethan Harvey",
   "description": "Slader/Quizlet 5 solutions limit bypass",
   "permissions": [
@@ -21,7 +21,7 @@
     },
     {
       "matches": ["*://quizlet.com/explanations/questions/*", "*://quizlet.com/explanations/textbook-solutions/*/*"],
-      "js": ["js/katex/katex.js", "js/katex/autorender.js", "js/quizlet_bypass.js"]
+      "js": ["js/quizlet_bypass.js"]
   }
 ],
   "manifest_version": 2