zoom.js

(() => {
  if (!window.electronApi) return;
  
  console.log("Disable autogain code injected");

  const setMediaConstraint = (constraint, name, value) => {
    if (!constraint) return;
    
    if (constraint.advanced?.find(opt => name in opt)) {
      constraint.advanced.find(opt => name in opt)[name] = value;
      return;
    }

    if (constraint.mandatory?.[name]) {
      constraint.mandatory[name] = value;
      return;
    }

    if (constraint.optional?.find(opt => name in opt)) {
      constraint.optional.find(opt => name in opt)[name] = value;
      return;
    }

    constraint.optional = constraint.optional || [];
    constraint.optional.push({ [name]: value });
  };

  const disableAutogain = constraints => {
    if (!constraints?.audio || typeof constraints.audio !== 'object') return constraints;

    const audio = constraints.audio;
    const autoGainSettings = {
      autoGainControl: false,
      googAutoGainControl: false,
      googAutoGainControl2: false
    };

    if (audio.optional || audio.mandatory) {
      Object.entries(autoGainSettings).forEach(([key, value]) => 
        setMediaConstraint(audio, key, value)
      );
    } else {
      audio.autoGainControl = false;
    }
    return constraints;
  };

  const patchMediaFunction = (object, name, wrapper) => {
    if (!(name in object)) return;
    const original = object[name];
    object[name] = wrapper(original);
  };

  // Patch modern getUserMedia
  patchMediaFunction(navigator.mediaDevices, 'getUserMedia', original => 
    async function getUserMedia(constraints) {
      return original.call(this, disableAutogain({ ...constraints }));
    }
  );

  // Patch legacy getUserMedia variants
  const patchLegacyGetUserMedia = original =>
    function getUserMedia(constraints, success, error) {
      return original.call(this, disableAutogain({ ...constraints }), success, error);
    };

  ['getUserMedia', 'mozGetUserMedia', 'webkitGetUserMedia'].forEach(method => 
    patchMediaFunction(navigator, method, patchLegacyGetUserMedia)
  );

  // Patch applyConstraints
  patchMediaFunction(MediaStreamTrack.prototype, 'applyConstraints', original =>
    function applyConstraints(constraints) {
      return original.call(this, disableAutogain({ ...constraints }));
    }
  );
})();

(function () {

	var lastMessage = {};
	var lastName = "";
	var lastImage = "";
	var messageHistory = [];

  setInterval(() => {
    lastMessage = {}
  }, 5000)

	function toDataURL(url, callback) {
	  var xhr = new XMLHttpRequest();
	  xhr.onload = function() {

		var blob = xhr.response;

		if (blob.size > (55 * 1024)) {
		  callback(url); // Image size is larger than 25kb.
		  return;
		}

		var reader = new FileReader();


		reader.onloadend = function() {
		  callback(reader.result);
		}
		reader.readAsDataURL(xhr.response);
	  };
	  xhr.open('GET', url);
	  xhr.responseType = 'blob';
	  xhr.send();
	}
	
	function escapeHtml(unsafe){
		try {
			if (settings.textonlymode){ // we can escape things later, as needed instead I guess.
				return unsafe;
			}
			return unsafe
				 .replace(/&/g, "&")
				 .replace(/</g, "&lt;")
				 .replace(/>/g, "&gt;")
				 .replace(/"/g, "&quot;")
				 .replace(/'/g, "&#039;") || "";
		} catch(e){
			return "";
		}
	}

	function getAllContentNodes(element) { // takes an element.
		var resp = "";
		
		if (!element){return resp;}
		
		if (!element.childNodes || !element.childNodes.length){
			if (element.textContent){
				return escapeHtml(element.textContent) || "";
			} else {
				return "";
			}
		}
		
		element.childNodes.forEach(node=>{
			
			if (node.nodeName == "BUTTON"){
				return;
			}
			
			if (node.childNodes.length){
				resp += getAllContentNodes(node)
			} else if ((node.nodeType === 3) && node.textContent && (node.textContent.trim().length > 0)){
				resp += escapeHtml(node.textContent.trim())+" ";
			} else if (node.nodeType === 1){
				if (!settings.textonlymode){
					if ((node.nodeName == "IMG") && node.src){
						node.src = node.src+"";
					}
					resp += node.outerHTML;
					if (node.nodeName == "IMG"){
						resp += " ";
					}
				}
			}
		});
		return resp;
	}
	
	function processMessage(ele, id=false){

		if (ele && ele.marked){
		  return;
		} else {
		  ele.marked = true;
		}
		if (!id){
			var mid = ele.querySelector("div[id][class*='chat']");
			if (!mid || !("id" in mid)){
				return;
			}
			id = mid.id;
		}
		
		if (id){
			if (messageHistory.includes(id)){
				return;
			}
			messageHistory.push(id);
		} else {
			return;
		}

		if (document.querySelector("chat-message__container")){
			if (document.querySelector("chat-message__container").marked){
				return;
			} else {
				document.querySelector("chat-message__container").marked = true;
			}
		}


		var img = false;
		var chatimg = "";
		try{
		   chatimg = ele.querySelector(".chat-item__user-avatar").src;
		   img = true;
		} catch(e){
			//
		}
		
		var name = "";
		if (ele.querySelector(".chat-item__sender")){
		  name = ele.querySelector(".chat-item__sender").innerText;
		  if (name){
			  name = name.trim();
			  name = escapeHtml(name);
		  }
		}

		if (!name){

			try {
				var prev = ele.previousElementSibling;
				for (var i=0; i<50;i++){
					if (prev.querySelector('.chat-item__sender')){
						break;
					} else {
						prev = prev.previousElementSibling;
					}
				}
				try{


				    if (prev.querySelector(".chat-item__sender")){
					    name = prev.querySelector(".chat-item__sender").innerText;
					    if (name){
						    name = name.trim();
							name = escapeHtml(name);
					    }
					    
						chatimg = prev.querySelector(".chat-item__user-avatar") || "";
						if (chatimg){
							chatimg = chatimg.src;
						}
					  }


				} catch(e){}

			} catch(e){}
		}

		var msg = "";
		try {
			msg = getAllContentNodes(ele.querySelector('.chat-rtf-box__display, .new-chat-message__text-box, .new-chat-message__text-content, .chat-message__text-content, .new-chat-message__content'));
		} catch(e){

		}
		if (msg){
			msg = msg.trim();
			if (name){
				if (msg.startsWith(name)){
					msg = msg.replace(name, '');
					msg = msg.trim();
				}
			}
		}
		
		if (name){
			lastName = name;
			lastImage = chatimg;
		} else if (lastName){
			name = lastName;
			chatimg = lastImage;
		}
		
		var ctt = ele.querySelector(".chat-image-preview-wrapper img[src]") || "";
		if (ctt){
			ctt = ctt.src;
		}
		
		var data = {};
		data.chatname = name;
		data.chatbadges = "";
		data.backgroundColor = "";
		data.textColor = "";
		data.chatmessage = msg;
		data.chatimg = chatimg;
		data.hasDonation = "";
		data.membership = "";;
		data.contentimg = ""; // ctt;
		data.textonly = settings.textonlymode || false;
		data.type = "zoom";

		if (lastMessage === JSON.stringify(data)){ // prevent duplicates, as zoom is prone to it.
			return;
		}
		lastMessage = JSON.stringify(data);
		
		if (data.contentimg){
			try {
				toDataURL(data.contentimg, function(dataUrl) {
					data.contentimg = dataUrl;
					pushMessage(data);
					return;
				});
			} catch(e){
			}
		} else {
			pushMessage(data);
		}
		
	}

	function pushMessage(data){
		try{
			//console.log(data);
			//console.log(window.self !== window.top);
			chrome.runtime.sendMessage(chrome.runtime.id, { "message": data }, function(){});
		} catch(e){}
	}
	
	var settings = {};
	// settings.textonlymode
	// settings.captureevents
	
	
	chrome.runtime.sendMessage(chrome.runtime.id, { "getSettings": true }, function(response){  // {"state":isExtensionOn,"streamID":channel, "settings":settings}
		if ("settings" in response){
			settings = response.settings;
		}
	});

	chrome.runtime.onMessage.addListener(
		function (request, sender, sendResponse) {
			try{
				if ("focusChat" == request){
					//console.log("Focusing");
					var sent=false;
					//console.log(window.self !== window.top);
					document.querySelectorAll('iframe').forEach( item =>{
						if (sent){return;}
						if (item && item.contentWindow && item.contentWindow.document && item.contentWindow.document.body.querySelector("textarea.chat-box__chat-textarea.window-content-bottom, .chat-rtf-box__chat-textarea-wrapper div[contenteditable='true']")){
							sent = true;
							//console.log("iframe sent")
							item.contentWindow.document.body.querySelector("textarea.chat-box__chat-textarea.window-content-bottom, .chat-rtf-box__chat-textarea-wrapper div[contenteditable='true']").focus();
						}
					});
					if (!sent && document.querySelector("textarea.chat-box__chat-textarea.window-content-bottom, .chat-rtf-box__chat-textarea-wrapper div[contenteditable='true']")){
						document.querySelector("textarea.chat-box__chat-textarea.window-content-bottom, .chat-rtf-box__chat-textarea-wrapper div[contenteditable='true']").focus();
						//console.log("main sent")
						sent=true;
					}
					//console.log("sent: "+sent);
					sendResponse(true);
					return;
				}
				if (typeof request === "object"){
					if ("settings" in request){
						settings = request.settings;
						sendResponse(true);
						return;
					}
				}
			} catch(e){}
			sendResponse(false);
		}
	);
	var lastHTML = "";
	function streamPollRAW(element){
		var html = element.outerHTML;       
		var data = { html: html }; 
		data.type = "zoom_poll";
		var json = JSON.stringify(data);
		if (lastHTML === json){ // prevent duplicates, as zoom is prone to it.
			return;
		}
		lastHTML = json;
		pushMessage(data);
	}
	
	var questionList = [];
	function processQuestion(ele){
		var question = getAllContentNodes(ele.querySelector(".q-a-question__question-content"));
		var name = ele.querySelector(".q-a-question__q-owner-name").innerText;
		
		var hash = name+":"+question;
		hash = hash.slice(0, 500);
		if (questionList.includes(hash)){
			return;
		} else {
			questionList.push(hash);
		}
		
		questionList = questionList.slice(-100);
		
		var chatimg = ele.querySelector(".q-a-question__avatar img[src]") || ""
		if (chatimg){
			chatimg = chatimg.src;
		}
		
		if (chatimg === "https://us02st1.zoom.us/web_client/enuunvk/image/default-avatar.png"){
			chatimg = "";
		}
		
		var data = {};
		data.chatname = name;
		data.chatbadges = "";
		data.backgroundColor = "";
		data.textColor = "";
		data.chatmessage = question;
		data.chatimg = chatimg;
		data.hasDonation = "";
		data.membership = "";;
		data.contentimg = "";
		data.question = true;
		data.type = "zoom";
		
		pushMessage(data);
	}
	

	function onElementInserted(target) {
		var onMutationsObserved = function(mutations) {
			mutations.forEach(function(mutation) {
				if (mutation.addedNodes.length) {
					for (var i = 0, len = mutation.addedNodes.length; i < len; i++) {
						try {
							if (mutation.addedNodes[i].hasAttribute("role")){
								processMessage(mutation.addedNodes[i]);
							} else if (mutation.addedNodes[i].hasAttribute("id")){
								processMessage(mutation.addedNodes[i]);
							} 
						} catch(e){
							
						}
					}
				}
			});
		};
		if (!target){return;}
		var config = { childList: true, subtree: true };
		var MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
		var observer = new MutationObserver(onMutationsObserved);
		observer.observe(target, config);

	}
	console.log("social stream injected");

	setInterval(function(){
		messageHistory = messageHistory.slice(-5000);
		
		if (document.getElementById("chat-list-content")){
			if (!document.getElementById("chat-list-content").marked){
				console.log("NOT Makred!");
				lastName = "";
				lastImage = "";
				document.getElementById("chat-list-content").marked=true;
					// id="chat-item-container-1"
				setTimeout(function(){
					try {
						document.getElementById("chat-list-content").querySelectorAll("[id^='chat-item-container-']").forEach(x=>{
							x.marked = true;
							let id = x.querySelector("[id]");
							if (id?.id){
								id.marked = true;
								messageHistory.push(id.id);
							}
						});
					} catch(e){}
					onElementInserted(document.querySelector("#chat-list-content"));
				},2000);
			}
		} else if (document.querySelectorAll('iframe').length){
			document.querySelectorAll('iframe').forEach( item =>{
				try {
					if (item && item.contentWindow && item.contentWindow.document && item.contentWindow.document.body.querySelector('#chat-list-content')){
						if (!item.contentWindow.document.body.querySelector('#chat-list-content').marked){
							console.log("FOUND UNMARKED IFRAME ");
							lastName = "";
							lastImage = "";
							item.contentWindow.document.body.querySelector('#chat-list-content').marked=true;
							
							setTimeout(function(){
								try {
									item.contentWindow.document.body.querySelector('#chat-list-content').querySelectorAll("[id^='chat-item-container-']").forEach(x=>{
										x.marked = true;
										let id = x.querySelector("[id]");
										if (id?.id){
											id.marked = true;
											messageHistory.push(id.id);
										}
									});
								} catch(e){}
								onElementInserted(document.querySelector("#chat-list-content"));
							},2000);
							
							onElementInserted(item.contentWindow.document.body.querySelector('#chat-list-content'));
						}
					}
				} catch(e){}
			});
		}
		if (document.getElementById("poll__body")){
			streamPollRAW(document.getElementById("poll__body"));
		}
		
		document.querySelectorAll('[class^="animation-reactions/"]:not([data-skip])').forEach(reaction=>{
			reaction.dataset.skip = true;
			
			var data = {};
			data.chatname = "";
			data.chatmessage = reaction.querySelector("svg,img").outerHTML;
			if (!data.chatmessage){return;}
			data.event = "reaction";
			data.type = "zoom";
			data.textonlymode = false;
			//console.log(data);
			pushMessage(data);
			
		});
		
		document.querySelectorAll('iframe').forEach( item =>{
			if (item && item.contentWindow && item.contentWindow.document && item.contentWindow.document.body){
				item.contentWindow.document.body.querySelectorAll('[class^="animation-reactions/"]:not([data-skip])').forEach(reaction=>{
					reaction.dataset.skip = true;
					
					var data = {};
					data.chatname = "";
					data.chatmessage = reaction.querySelector("svg,img").outerHTML;
					if (!data.chatmessage){return;}
					data.event = "reaction";
					data.type = "zoom";
					data.textonlymode = false;
					//console.log(data);
					pushMessage(data);
				});
				
				if (item.contentWindow.document.body.querySelector("#q-a-container-window")){
					item.contentWindow.document.body.querySelectorAll("#q-a-container-window .q-a-question").forEach(ele=>{
						if (ele.ignore){return;}
						ele.ignore = true;
						processQuestion(ele);
						
					});
				}
			}
		});
		

		if (document.getElementById('chat-list-content')) {
		    // prevent chat box from stop scrolling, which makes messages stop appearing
			document.getElementById('chat-list-content').scrollTop = document.getElementById('chat-list-content').scrollTop + 1000
		}

		if (document.querySelector('[aria-label="open the chat pane"]')) { // prevent chat box from being closed after screen-share by keeping it always open
		    document.querySelector('[aria-label="open the chat pane"]').click()
		}
		
		if (document.querySelector("#q-a-container-window")){
			document.querySelectorAll("#q-a-container-window .q-a-question").forEach(ele=>{
				if (ele.ignore){return;}
				ele.ignore = true;
				processQuestion(ele);
				
			});
		}
		
	},1000);
	
	
	/////
	
	
	
	///////// the following is a loopback webrtc trick to get chrome to not throttle this tab when not visible.
	try {
		var receiveChannelCallback = function (e) {
			remoteConnection.datachannel = event.channel;
			remoteConnection.datachannel.onmessage = function (e) {};
			remoteConnection.datachannel.onopen = function (e) {};
			remoteConnection.datachannel.onclose = function (e) {};
			setInterval(function () {
				remoteConnection.datachannel.send("KEEPALIVE");
			}, 1000);
		};
		var errorHandle = function (e) {};
		var localConnection = new RTCPeerConnection();
		var remoteConnection = new RTCPeerConnection();
		localConnection.onicecandidate = e => !e.candidate || remoteConnection.addIceCandidate(e.candidate).catch(errorHandle);
		remoteConnection.onicecandidate = e => !e.candidate || localConnection.addIceCandidate(e.candidate).catch(errorHandle);
		remoteConnection.ondatachannel = receiveChannelCallback;
		localConnection.sendChannel = localConnection.createDataChannel("sendChannel");
		localConnection.sendChannel.onopen = function (e) {
			localConnection.sendChannel.send("CONNECTED");
		};
		localConnection.sendChannel.onclose = function (e) {};
		localConnection.sendChannel.onmessage = function (e) {};
		localConnection
			.createOffer()
			.then(offer => localConnection.setLocalDescription(offer))
			.then(() => remoteConnection.setRemoteDescription(localConnection.localDescription))
			.then(() => remoteConnection.createAnswer())
			.then(answer => remoteConnection.setLocalDescription(answer))
			.then(() => {
				localConnection.setRemoteDescription(remoteConnection.localDescription);
				console.log("KEEP ALIVE TRICk ENABLED");
			})
			.catch(errorHandle);
	} catch (e) {
		console.log(e);
	}

	try {
		window.onblur = null;
		window.blurred = false;
		document.hidden = false;
		document.visibilityState = "visible";
		document.mozHidden = false;
		document.webkitHidden = false;
	} catch (e) {}

	try {
		document.hasFocus = function () {
			return true;
		};
		window.onFocus = function () {
			return true;
		};

		Object.defineProperty(document, "mozHidden", { value: false });
		Object.defineProperty(document, "msHidden", { value: false });
		Object.defineProperty(document, "webkitHidden", { value: false });
		Object.defineProperty(document, "visibilityState", {
			get: function () {
				return "visible";
			},
			value: "visible",
			writable: true
		});
		Object.defineProperty(document, "hidden", { value: false, writable: true });

		setInterval(function () {
			window.onblur = null;
			window.blurred = false;
			document.hidden = false;
			document.visibilityState = "visible";
			document.mozHidden = false;
			document.webkitHidden = false;
			document.dispatchEvent(new Event("visibilitychange"));
		}, 200);
	} catch (e) {}

	try {
		document.onvisibilitychange = function () {
			window.onFocus = function () {
				return true;
			};
		};
	} catch (e) {}

	try {
		for (event_name of [
			"visibilitychange",
			"webkitvisibilitychange",
			"blur", // may cause issues on some websites
			"mozvisibilitychange",
			"msvisibilitychange"
		]) {
			try {
				window.addEventListener(
					event_name,
					function (event) {
						event.stopImmediatePropagation();
						event.preventDefault();
					},
					true
				);
			} catch (e) {}
		}
	} catch (e) {}
	
})();