w2 lesson planning #32

caalo · 2024-09-25T00:03:38Z

No description provided.

github-actions · 2024-09-25T00:04:07Z

No broken url errors! 🎉
Comment updated at 2024-09-25-00:04:55 with changes from 3243eb5

slides/lesson2_slides_files/libs/revealjs/plugin/notes/speaker-view.html

+							handleStateMessage( data );
+						}
+						else if( data.type === 'return' ) {
+							pendingCalls[data.callId](data.result);


To fix the problem, we need to validate that data.callId is a valid key in the pendingCalls object and that the corresponding value is a function before invoking it. This can be achieved by using the hasOwnProperty method to check if data.callId exists in pendingCalls and then verifying that the value is a function.

slides/lesson2_slides_files/libs/revealjs/plugin/notes/speaker-view.html

+						notes.classList.remove( 'hidden' );
+						notesValue.style.whiteSpace = data.whitespace;
+						if( data.markdown ) {
+							notesValue.innerHTML = marked( data.notes );


To fix the problem, we need to ensure that the input passed to the marked function is properly sanitized to prevent XSS attacks. The best way to do this is to use a library specifically designed for sanitizing HTML, such as DOMPurify. This library will allow us to clean the HTML output generated by marked before inserting it into the DOM.

Import the DOMPurify library.

Use DOMPurify to sanitize the HTML output from marked before setting it to notesValue.innerHTML.

slides/lesson2_slides_files/libs/revealjs/plugin/notes/speaker-view.html

+							notesValue.innerHTML = marked( data.notes );
+						}
+						else {
+							notesValue.innerHTML = data.notes;


slides/lesson2_slides_files/libs/revealjs/plugin/notes/speaker-view.html

+					currentSlide = document.createElement( 'iframe' );
+					currentSlide.setAttribute( 'width', 1280 );
+					currentSlide.setAttribute( 'height', 1024 );
+					currentSlide.setAttribute( 'src', currentURL );


slides/lesson2_slides_files/libs/revealjs/plugin/notes/speaker-view.html

+					currentSlide = document.createElement( 'iframe' );
+					currentSlide.setAttribute( 'width', 1280 );
+					currentSlide.setAttribute( 'height', 1024 );
+					currentSlide.setAttribute( 'src', currentURL );


To fix the problem, we need to ensure that the URL used for redirection is validated against a list of authorized URLs. This can be done by maintaining a whitelist of allowed URLs and checking data.url against this list before constructing the currentURL and upcomingURL.

Create a whitelist of authorized URLs.

Check if data.url is in the whitelist before using it to construct the URLs.

If data.url is not in the whitelist, handle the error appropriately (e.g., log an error, use a default URL, etc.).

slides/lesson2_slides_files/libs/revealjs/plugin/notes/speaker-view.html

+					upcomingSlide = document.createElement( 'iframe' );
+					upcomingSlide.setAttribute( 'width', 640 );
+					upcomingSlide.setAttribute( 'height', 512 );
+					upcomingSlide.setAttribute( 'src', upcomingURL );


To fix this issue, we need to ensure that the data.url is properly sanitized before it is used to construct the upcomingURL and currentURL. One effective way to do this is to use a library like DOMPurify to sanitize the URL. DOMPurify is a well-known library for sanitizing HTML and preventing XSS attacks.

Add the DOMPurify library to the project.

Sanitize the data.url before using it to construct the iframe URLs.

Ensure that the sanitized URL is used in place of the original data.url.

slides/lesson2_slides_files/libs/revealjs/plugin/notes/speaker-view.html

+					upcomingSlide = document.createElement( 'iframe' );
+					upcomingSlide.setAttribute( 'width', 640 );
+					upcomingSlide.setAttribute( 'height', 512 );
+					upcomingSlide.setAttribute( 'src', upcomingURL );


To fix the problem, we need to ensure that the URL used in the iframe's src attribute is validated against a list of authorized URLs. This can be achieved by maintaining a list of allowed base URLs and checking if the data.url matches one of these before constructing the final URL.

Create a list of authorized base URLs.

Validate data.url against this list.

Only construct the upcomingURL if data.url is authorized.

slides/lesson2_slides_files/libs/revealjs/plugin/pdf-export/pdfexport.js

+		if( pdfExport ){
+			style = 'pdf';
+		}
+		link.href = getRevealJsPath() + 'css/print/' + style + '.css';


To fix this issue, we need to ensure that the href value obtained from the DOM is properly sanitized before it is used to construct the URL for the stylesheet. One way to achieve this is by using a function to escape any potentially dangerous characters in the URL.

We will:

Create a function to escape special characters in the URL.

Use this function to sanitize the href value before it is used in setStylesheet3.

slides/lesson2_slides_files/libs/revealjs/plugin/reveal-menu/menu.js

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li").forEach((function(e){e.classList.remove("selected")})),(o=O(".active-menu-panel .slide-menu-items:last-of-type li:last-of-type"))&&(o.classList.add("selected"),f(o));break;case 32:case 13:var s;(s=O(".active-menu-panel .slide-menu-items li.selected"))&&E(s,!0);break;case 27:g(null,!0)}var l}function v(e){(e&&e.preventDefault(),b())||(O("body").classList.add("slide-menu-active"),O(".reveal").classList.add("has-"+r.effect+"-"+r.side),O(".slide-menu").classList.add("active"),O(".slide-menu-overlay").classList.add("active"),r.themes&&(A('div[data-panel="Themes"] li').forEach((function(e){e.classList.remove("active")})),A('li[data-theme="'+O("link#theme").getAttribute("href")+'"]').forEach((function(e){e.classList.add("active")}))),r.transitions&&(A('div[data-panel="Transitions"] li').forEach((function(e){e.classList.remove("active")})),A('li[data-transition="'+n.transition+'"]').forEach((function(e){e.classList.add("active")}))),A(".slide-menu-panel li.active").forEach((function(e){e.classList.add("selected"),f(e)})))}function g(e,t){e&&e.preventDefault(),r.sticky&&!t||(O("body").classList.remove("slide-menu-active"),O(".reveal").classList.remove("has-"+r.effect+"-"+r.side),O(".slide-menu").classList.remove("active"),O(".slide-menu-overlay").classList.remove("active"),A(".slide-menu-panel li.selected").forEach((function(e){e.classList.remove("selected")})))}function y(e){b()?g(e,!0):v(e)}function b(){return O("body").classList.contains("slide-menu-active")}function S(e,t){v(e);var n=t;"string"!=typeof t&&(n=e.currentTarget.getAttribute("data-panel")),O(".slide-menu-toolbar > li.active-toolbar-button").classList.remove("active-toolbar-button"),O('li[data-panel="'+n+'"]').classList.add("active-toolbar-button"),O(".slide-menu-panel.active-menu-panel").classList.remove("active-menu-panel"),O('div[data-panel="'+n+'"]').classList.add("active-menu-panel")}function E(e,n){var i=parseInt(e.getAttribute("data-slide-h")),a=parseInt(e.getAttribute("data-slide-v")),o=e.getAttribute("data-theme"),s=e.getAttribute("data-highlight-theme"),l=e.getAttribute("data-transition");isNaN(i)||isNaN(a)||t.slide(i,a),o&&I("theme",o),s&&I("highlight-theme",s),l&&t.configure({transition:l});var c=O("a",e);c&&(n||!r.sticky||r.autoOpen&&c.href.startsWith("#")||c.href.startsWith(window.location.origin+window.location.pathname+"#"))&&c.click(),g()}function x(e){"A"!==e.target.nodeName&&e.preventDefault(),E(e.currentTarget)}function w(){var e=t.getState();A("li.slide-menu-item, li.slide-menu-item-vertical").forEach((function(t){t.classList.remove("past"),t.classList.remove("active"),t.classList.remove("future");var n=parseInt(t.getAttribute("data-slide-h")),r=parseInt(t.getAttribute("data-slide-v"));n<e.indexh||n===e.indexh&&r<e.indexv?t.classList.add("past"):n===e.indexh&&r===e.indexv?t.classList.add("active"):t.classList.add("future")}))}function L(){var e=window.getComputedStyle(O(".reveal"));O(".slide-menu").style.fontFamily=e.fontFamily}var T=0;function C(){if(!a){var e=function(e,t,n,r,i,a){var o={"data-button":""+T++,class:"toolbar-panel-button"+(a?" active-toolbar-button":"")};t&&(o["data-panel"]=t);var s=k("li",o);return n.startsWith("fa-")?s.appendChild(k("i",{class:r+" "+n})):s.innerHTML=n+"</i>",s.appendChild(k("br"),O("i",s)),s.appendChild(k("span",{class:"slide-menu-toolbar-label"},e),O("i",s)),s.onclick=i,d.appendChild(s),s},i=function(e,i,a,o,s){function l(e,t){if(""===e)return null;var n=t?O(e,i):O(e);return n?n.textContent:null}var c=i.getAttribute("data-menu-title")||l(".menu-title",i)||l(r.titleSelector,i);if(!c&&r.useTextContentForMissingTitles&&(c=i.textContent.trim())&&(c=c.split("\n").map((function(e){return e.trim()})).join(" ").trim().replace(/^(.{16}[^\s]*).*/,"$1").replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#039;")+"..."),!c){if(r.hideMissingTitles)return"";e+=" no-title",c="Slide "+(a+1)}var u=k("li",{class:e,"data-item":a,"data-slide-h":o,"data-slide-v":void 0===s?0:s});if(r.markers&&(u.appendChild(k("i",{class:"fas fa-check-circle fa-fw past"})),u.appendChild(k("i",{class:"fas fa-arrow-alt-circle-right fa-fw active"})),u.appendChild(k("i",{class:"far fa-circle fa-fw future"}))),r.numbers){var f=[],d="h.v";switch("string"==typeof r.numbers?d=r.numbers:"string"==typeof n.slideNumber&&(d=n.slideNumber),d){case"c":f.push(a+1);break;case"c/t":f.push(a+1,"/",t.getTotalSlides());break;case"h/v":f.push(o+1),"number"!=typeof s||isNaN(s)||f.push("/",s+1);break;default:f.push(o+1),"number"!=typeof s||isNaN(s)||f.push(".",s+1)}u.appendChild(k("span",{class:"slide-menu-item-number"},f.join("")+". "))}return u.appendChild(k("span",{class:"slide-menu-item-title"},c)),u},o=function(e){s&&(A(".active-menu-panel .slide-menu-items li.selected").forEach((function(e){e.classList.remove("selected")})),e.currentTarget.classList.add("selected"))},l=O(".reveal").parentElement,c=k("div",{class:"slide-menu-wrapper"});l.appendChild(c);var u=k("nav",{class:"slide-menu slide-menu--"+r.side});"string"==typeof r.width&&(-1!=["normal","wide","third","half","full"].indexOf(r.width)?u.classList.add("slide-menu--"+r.width):(u.classList.add("slide-menu--custom"),u.style.width=r.width)),c.appendChild(u),L();var f=k("div",{class:"slide-menu-overlay"});c.appendChild(f),f.onclick=function(){g(null,!0)};var d=k("ol",{class:"slide-menu-toolbar"});O(".slide-menu").appendChild(d),e("Slides","Slides","fa-images","fas",S,!0),r.custom&&r.custom.forEach((function(t,n,r){e(t.title,"Custom"+n,t.icon,null,S)})),r.themes&&e("Themes","Themes","fa-adjust","fas",S),r.transitions&&e("Transitions","Transitions","fa-sticky-note","fas",S);var p=k("li",{id:"close",class:"toolbar-panel-button"});if(p.appendChild(k("i",{class:"fas fa-times"})),p.appendChild(k("br")),p.appendChild(k("span",{class:"slide-menu-toolbar-label"},"Close")),p.onclick=function(){g(null,!0)},d.appendChild(p),function e(){if(document.querySelector("section[data-markdown]:not([data-markdown-parsed])"))setTimeout(e,100);else{var t=k("div",{"data-panel":"Slides",class:"slide-menu-panel active-menu-panel"});t.appendChild(k("ul",{class:"slide-menu-items"})),u.appendChild(t);var n=O('.slide-menu-panel[data-panel="Slides"] > .slide-menu-items'),r=0;A(".slides > section").forEach((function(e,t){var a=A("section",e);if(a.length>0)a.forEach((function(e,a){var o=i(0===a?"slide-menu-item":"slide-menu-item-vertical",e,r,t,a);o&&n.appendChild(o),r++}));else{var o=i("slide-menu-item",e,r,t);o&&n.appendChild(o),r++}})),A(".slide-menu-item, .slide-menu-item-vertical").forEach((function(e){e.onclick=x})),w()}}(),t.addEventListener("slidechanged",w),r.custom){var h=function(){this.status>=200&&this.status<300?(this.panel.innerHTML=this.responseText,C(this.panel)):I(this)},E=function(){I(this)},C=function(e){A("ul.slide-menu-items li.slide-menu-item",e).forEach((function(e,t){e.setAttribute("data-item",t+1),e.onclick=x,e.addEventListener("mouseenter",o)}))},I=function(e){var t="<p>ERROR: The attempt to fetch "+e.responseURL+" failed with HTTP status "+e.status+" ("+e.statusText+").</p><p>Remember that you need to serve the presentation HTML from a HTTP server.</p>";e.panel.innerHTML=t};r.custom.forEach((function(e,t,n){var r=k("div",{"data-panel":"Custom"+t,class:"slide-menu-panel 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R=k("div",{class:"slide-menu-button"}),j=k("a",{href:"#"});j.appendChild(k("i",{class:"fas fa-bars"})),R.appendChild(j),O(".reveal").appendChild(R),R.onclick=v}if(r.openSlideNumber)O("div.slide-number").onclick=v;A(".slide-menu-panel .slide-menu-items li").forEach((function(e){e.addEventListener("mouseenter",o)}))}if(r.keyboard){if(document.addEventListener("keydown",m,!1),window.addEventListener("message",(function(e){var t;try{t=JSON.parse(e.data)}catch(e){}t&&"triggerKey"===t.method&&m({keyCode:t.args[0],stopImmediatePropagation:function(){}})})),n.keyboardCondition&&"function"==typeof n.keyboardCondition){var N=n.keyboardCondition;n.keyboardCondition=function(e){return N(e)&&(!b()||77==e.keyCode)}}else n.keyboardCondition=function(e){return!b()||77==e.keyCode};t.addKeyBinding({keyCode:77,key:"M",description:"Toggle menu"},y)}r.openOnInit&&v(),a=!0}function O(e,t){return t||(t=document),t.querySelector(e)}function A(e,t){return t||(t=document),Array.prototype.slice.call(t.querySelectorAll(e))}function k(e,t,n){var r=document.createElement(e);return t&&Object.getOwnPropertyNames(t).forEach((function(e){r.setAttribute(e,t[e])})),n&&(r.innerHTML=n),r}function I(e,t){var n=O("link#"+e),r=n.parentElement,i=n.nextElementSibling;n.remove();var a=n.cloneNode();a.setAttribute("href",t),a.onload=function(){L()},r.insertBefore(a,i)}function P(e,t,n){n.call()}function M(){var e,a,o,s=!i||i>=9;t.isSpeakerNotes()&&window.location.search.endsWith("controls=false")&&(s=!1),s&&(r.delayInit||C(),e="menu-ready",(o=document.createEvent("HTMLEvents",1,2)).initEvent(e,!0,!0),function(e,t){for(var n in t)e[n]=t[n]}(o,a),document.querySelector(".reveal").dispatchEvent(o),n.postMessageEvents&&window.parent!==window.self&&window.parent.postMessage(JSON.stringify({namespace:"reveal",eventName:e,state:t.getState()}),"*"))}return{id:"menu",init:function(e){o(n=(t=e).getConfig()),P(r.path+"menu.css","stylesheet",(function(){void 0===r.loadIcons||r.loadIcons?P(r.path+"font-awesome/css/all.css","stylesheet",M):M()}))},toggle:y,openMenu:v,closeMenu:g,openPanel:S,isOpen:b,initialiseMenu:C,isMenuInitialised:function(){return a}}}}));


github-actions · 2024-09-25T00:05:43Z

Re-rendered previews from the latest commit:

👀 Quick preview of course website here *
🔬 Comprehensive download of the course website here
Download the .docx file

* note not all html features will be properly displayed in the "quick preview" but it will give you a rough idea.

Updated at 2024-09-25 with changes from the latest commit 3243eb5

w2 lesson planning

9e8bb16

caalo merged commit 62d041b into main Sep 25, 2024
3 checks passed

github-advanced-security bot found potential problems Sep 25, 2024

View reviewed changes

@@ -394,4 +394,6 @@
             						else if( data.type === 'return' ) {
-            							pendingCalls[data.callId](data.result);
-            							delete pendingCalls[data.callId];
+            							if (pendingCalls.hasOwnProperty(data.callId) && typeof pendingCalls[data.callId] === 'function') {
+            								pendingCalls[data.callId](data.result);
+            								delete pendingCalls[data.callId];
+            							}
             						}

@@ -9,2 +9,4 @@
+            		<script src="https://cdnjs.cloudflare.com/ajax/libs/dompurify/2.3.4/purify.min.js"></script>
             		<style>
@@ -470,3 +472,3 @@
             						if( data.markdown ) {
-            							notesValue.innerHTML = marked( data.notes );
+            							notesValue.innerHTML = DOMPurify.sanitize(marked(data.notes));
             						}

@@ -526,2 +526,15 @@
             					var hash = '#/' + data.state.indexh + '/' + data.state.indexv;
+            					// Whitelist of authorized URLs
+            					var authorizedUrls = [
+            						'https://example.com',
+            						'https://another-example.com'
+            					];
+            					// Validate the URL
+            					if (authorizedUrls.indexOf(data.url) === -1) {
+            						console.error('Unauthorized URL:', data.url);
+            						return;
+            					}
             					var currentURL = data.url + urlSeparator + params + '&postMessageEvents=true' + hash;

@@ -6,2 +6,3 @@
             		<meta charset="utf-8">
+            		<script src="https://cdnjs.cloudflare.com/ajax/libs/dompurify/2.3.4/purify.min.js"></script>
@@ -526,4 +527,5 @@
             					var hash = '#/' + data.state.indexh + '/' + data.state.indexv;
-            					var currentURL = data.url + urlSeparator + params + '&postMessageEvents=true' + hash;
-            					var upcomingURL = data.url + urlSeparator + params + '&controls=false' + hash;
+            					var sanitizedUrl = DOMPurify.sanitize(data.url);
+            					var currentURL = sanitizedUrl + urlSeparator + params + '&postMessageEvents=true' + hash;
+            					var upcomingURL = sanitizedUrl + urlSeparator + params + '&controls=false' + hash;

@@ -526,2 +526,16 @@
             					var hash = '#/' + data.state.indexh + '/' + data.state.indexv;
+            					// List of authorized base URLs
+            					var authorizedUrls = [
+            						'https://example.com',
+            						'https://another-example.com'
+            					];
+            					// Validate the base URL
+            					var url = new URL(data.url);
+            					if (!authorizedUrls.includes(url.origin)) {
+            						console.error('Unauthorized URL:', data.url);
+            						return;
+            					}
             					var currentURL = data.url + urlSeparator + params + '&postMessageEvents=true' + hash;

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w2 lesson planning #32

w2 lesson planning #32

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github-actions bot commented Sep 25, 2024 •

edited

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github-actions bot commented Sep 25, 2024

@@ -18,2 +18,11 @@
+            	function escapeUrl(url) {
+            		return url.replace(/&/g, '&amp;')
+            			.replace(/</g, '&lt;')
+            			.replace(/>/g, '&gt;')
+            			.replace(/"/g, '&quot;')
+            			.replace(/'/g, '&#x27;')
+            			.replace(/\//g, '&#x2F;');
+            	}
             	function setStylesheet3( pdfExport ){
@@ -30,3 +39,3 @@
             		}
-            		link.href = getRevealJsPath() + 'css/print/' + style + '.css';
+            		link.href = escapeUrl(getRevealJsPath() + 'css/print/' + style + '.css');
             	}

w2 lesson planning #32

w2 lesson planning #32

Conversation

caalo commented Sep 25, 2024

github-actions bot commented Sep 25, 2024 • edited Loading

github-actions bot commented Sep 25, 2024

github-actions bot commented Sep 25, 2024 •

edited

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