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dyspatcher.js
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dyspatcher.js
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var CHAT = {
// GLobal variables
SOCKET: null,
USER: null,
ADMIN: null,
OBJ_IDS: ["loading", "chat", "user", "chat-connect", "chat-localuser-name", "chat-userslist", "chat-localuser", "chat-message", "chat-message-txt", "userslist", "userslist-toggler", "chatInitButton", "receivedMessages", "custom-keys", "chat-localuser-keyid"],
OBJS: {},
CONFIGS: { "is-admin":false },
CRYPTO: {
"config": {
"oaep": { "name":"RSA-OAEP", "modulusLength":4096, "publicExponent": new Uint8Array([1, 0, 1]), "hash":"SHA-256" },
"pss": { "name":"RSA-PSS", "hash":"SHA-256", "saltLength":256 },
},
"keys": { "objs":null, "pem":{}, "keyid":null, "files":{ "private":null, "public":null } },
"keyCache": { },
},
// Constants
PEM_PRIVATE_HEADER: "-----BEGIN PRIVATE KEY-----",
PEM_PRIVATE_FOOTER: "-----END PRIVATE KEY-----",
PEM_PUBLIC_HEADER: "-----BEGIN PUBLIC KEY-----",
PEM_PUBLIC_FOOTER: "-----END PUBLIC KEY-----",
/////////////////////////////////////////////////////////
//
// Web Socket Chat Engine
//
// Application load
load: async function() {
// Load objects
for(i of CHAT.OBJ_IDS) {
CHAT.OBJS[i] = document.getElementById(i);
}
CHAT.OBJS["loading"].innerHTML += "<b>OK</b>!";
// Generate encryption keys
CHAT.OBJS["loading"].innerHTML += "<br>Generating crypto keys... ";
if(!await CHAT.cryptoGenRSAKeys()) {
CHAT.OBJS["loading"].innerHTML += "<span class='red'><b>Error</b>!</span>";
CHAT.OBJS["loading"].innerHTML += "<p>Error loading crypto (unencrypted connection?)</p>";
return;
}
CHAT.OBJS["loading"].innerHTML += "<b>OK</b>!";
//Wait 1 second then allow to connect
CHAT.OBJS["loading"].innerHTML += "<h3>Done!</h3>";
setTimeout(function() {
CHAT.OBJS["loading"].remove();
CHAT.OBJS["chat-connect"].classList.add("active");
CHAT.OBJS["user"].focus();
}, 1000);
},
// Init chat engine on "Connect" button click
chatInit: async function(port, isSSL) {
// Check if user is ok
if(CHAT.OBJS["user"].value.match(/^[a-z0-9]{4,15}$/) == null) {
CHAT.printMessage("signal", "Invalid user. User must be 4-15 characters long, only lowercase letters and digits");
CHAT.OBJS["user"].value = "";
CHAT.OBJS["user"].focus();
return;
}
CHAT.USER = CHAT.OBJS["user"].value;
// Check if custom keys are set
if(CHAT.CRYPTO.keys.files.private || CHAT.CRYPTO.keys.files.public) {
if(!await CHAT.cryptoImportCustomRSAKeys(CHAT.CRYPTO.keys.files.private, CHAT.CRYPTO.keys.files.public)) {
CHAT.printMessage("signal", "Invalid custom keys");
return;
}
}
// Open websocket and set listeners
CHAT.SOCKET = new WebSocket("ws" + ((isSSL) ? "s" : "") + "://" + window.location.hostname + ":" + port);
CHAT.SOCKET.addEventListener("open", CHAT.websocketEventHandlerOpen);
CHAT.SOCKET.addEventListener("message", CHAT.websocketEventHandlerMessage);
CHAT.SOCKET.addEventListener("error", CHAT.websocketEventHandlerError);
CHAT.SOCKET.addEventListener("close", CHAT.websocketEventHandlerClose);
},
// Disconnect from chat server
chatDisconnect: function() {
CHAT.SOCKET.close();
CHAT.setInterface(false);
},
// WebSocket even handler: "open"
// Interface "connected" is shown when config is recevied from the server
websocketEventHandlerOpen: function(event) {
CHAT.sendCommand("signal", { "code":"chat-join", "publickey":CHAT.CRYPTO.keys.pem.public });
},
// WebSocket even handler: "close"
websocketEventHandlerClose: function(event) {
CHAT.printMessage("signal", "Connection closed");
CHAT.setInterface(false);
},
// WebSocket even handler: "error"
websocketEventHandlerError: function(event) {
CHAT.printMessage("signal", "Connection failed");
if(event.target.url.indexOf("wss://") === 0) {
CHAT.printMessage("signal", "<b>WARNING</b><br>The connection seems to use a self-signed SSL certificate. Please <a href='" + event.target.url.replace("wss://", "https://") + "' target='_blank'>click here ⇗</a> then accept the certificate, close the new window, and finally try again to connect.");
}
CHAT.setInterface(false);
},
// WebSocket even handler: "message"
websocketEventHandlerMessage: function(event) {
try {
payload = JSON.parse(event.data)
switch(payload.cmd) {
// Chat message received
case "message":
switch(payload.data.algo) {
case "aes":
CHAT.cryptoAesDecryptAndPrint(payload.data);
break;
case "rsa":
CHAT.cryptoRsaDecryptAndPrint(payload.data);
break;
}
break;
// Signal received
case "signal":
switch(payload.data.code) {
// Generic notice message
case "notice":
CHAT.printMessage("signal", payload.data.notice);
break;
// New user joined chat
case "chat-join":
CHAT.printMessage("signal", payload.user + " joined chat");
CHAT.userslistAdd(payload.user, payload.data.publickey);
break;
// User left chat
case "chat-left":
CHAT.printMessage("signal", payload.user + " abandoned chat");
CHAT.userslistRemove(payload.user);
break;
// Users list
case "chat-userslist":
CHAT.userslistClear();
let userslist = JSON.parse(payload.data.userslist);
CHAT.ADMIN = userslist[0].name;
for(user of userslist) {
CHAT.userslistAdd(user["name"], user["publickey"]);
}
break;
// Selected user is invalid
case "chat-invaliduser":
CHAT.printMessage("signal", "The name you selected is not available");
CHAT.OBJS["user"].value = "";
CHAT.OBJS["user"].focus();
break;
}
break;
// Config received
case "config":
// Save full configs
CHAT.CONFIGS = payload.data;
// Store own username, Key ID and @all AES key
CHAT.USER = payload.data.user;
CHAT.CRYPTO.keys.keyid = payload.data.keyid;
try {
window.crypto.subtle.importKey("raw", CHAT.str2ab(atob(payload.data["aeskey"])), "AES-GCM", true, ["encrypt", "decrypt"]).then(aeskey => {
CHAT.CRYPTO.keyCache["aeskey"] = aeskey;
})
} catch(e) { }
// Show connected interface
CHAT.setInterface(true);
break;
}
} catch { }
},
// Send generic command
sendCommand: function(cmd, data) {
let payload = { "cmd":cmd, "user":CHAT.USER, "data":data }
CHAT.SOCKET.send(JSON.stringify(payload));
},
// Send message
sendMessage: function(destination, message) {
let msgPayload = { "from":CHAT.USER, "to":destination, "message":message };
let msgPayloadStr = JSON.stringify(msgPayload);
// If it's a message for @all, then send it AES encrypted
if(destination == "all") {
// If not web admin: if @all destination is disabled or no @all AES key exists, then exists immediately
if(!CHAT.CONFIGS["is-admin"] && (CHAT.CONFIGS["disable-all"] || !CHAT.CRYPTO.keyCache["aeskey"])) {
CHAT.printMessage("signal", "You can't send messages to @all", true);
return;
}
//AES Encrypt message and send
CHAT.printMessage("my", msgPayload);
CHAT.cryptoAesEncryptAndSend(msgPayloadStr);
return;
} else {
// If destination public key is not available, then exits
let publickey = CHAT.cryptoGetUserRSAPublicKey(destination);
if(!publickey || !publickey.encrypt) {
CHAT.printMessage("signal", "Unknown destination or missing encryption key", true);
return;
}
//RSA Encrypt message and send
CHAT.printMessage("my", msgPayload);
CHAT.cryptoRsaEncryptAndSend(publickey.encrypt, msgPayloadStr);
// If user is admin web, then send message to server to show it in local chat
if(CHAT.CONFIGS["is-admin"] && (destination != CHAT.ADMIN)) {
CHAT.cryptoRsaEncryptAndSend(CHAT.CRYPTO.keys.objs.publicKey, msgPayloadStr);
}
}
},
/////////////////////////////////////////////////////////
//
// Crypto methods
//
// Load key file from filesystem
loadKeyFile: function(e) {
let file = e.target.files[0];
let type = e.target.dataset.keytype;
var reader = new FileReader();
reader.onload = function(e) {
let fileContent = e.target.result.trim();
switch(type) {
case "private":
if(fileContent.indexOf(CHAT.PEM_PRIVATE_HEADER) !== 0) {
alert("Invalid Private Key file");
return;
}
CHAT.CRYPTO.keys.files.private = fileContent;
break;
case "public":
if(fileContent.indexOf(CHAT.PEM_PUBLIC_HEADER) !== 0) {
alert("Invalid Public Key file");
return;
}
CHAT.CRYPTO.keys.files.public = fileContent;
break;
}
};
reader.readAsText(file);
},
// Generate Keys
cryptoGenRSAKeys: function() {
return new Promise((keysStatus) => {
try {
window.crypto.subtle.generateKey(CHAT.CRYPTO.config.oaep, true, ["encrypt", "decrypt"]).then(keyPair => {
CHAT.CRYPTO.keys.objs = keyPair;
// Export private key
window.crypto.subtle.exportKey("pkcs8", keyPair.privateKey).then(privateKey => {
CHAT.CRYPTO.keys.pem.private = window.btoa(CHAT.ab2str(privateKey));
// Import private key for message signature
window.crypto.subtle.importKey("pkcs8", privateKey, CHAT.CRYPTO.config.pss, true, ["sign"]).then(signKey => {
CHAT.CRYPTO.keys.objs.signKey = signKey;
// Export public key
window.crypto.subtle.exportKey("spki", keyPair.publicKey).then(publicKey => {
CHAT.CRYPTO.keys.pem.public = window.btoa(CHAT.ab2str(publicKey));
// End of keys generation
keysStatus(true);
return;
});
});
});
});
} catch(e) {
keysStatus(false);
return;
}
});
},
// Import Custom Keys
cryptoImportCustomRSAKeys: function(privateKeyPem, publicKeyPem) {
return new Promise((keysStatus) => {
try {
// Convert PEM to binary
let privateKeyBin = CHAT.str2ab(window.atob(privateKeyPem.substring(CHAT.PEM_PRIVATE_HEADER.length, (privateKeyPem.length - CHAT.PEM_PRIVATE_FOOTER.length))));
let publicKeyBin = CHAT.str2ab(window.atob(publicKeyPem.substring(CHAT.PEM_PUBLIC_HEADER.length, (publicKeyPem.length - CHAT.PEM_PUBLIC_FOOTER.length))));
// Load private key
window.crypto.subtle.importKey("pkcs8", privateKeyBin, CHAT.CRYPTO.config.oaep, true, ["decrypt"]).then(privateKey => {
CHAT.CRYPTO.keys.objs.privateKey = privateKey;
// Load key for sign
window.crypto.subtle.importKey("pkcs8", privateKeyBin, CHAT.CRYPTO.config.pss, true, ["sign"]).then(signKey => {
CHAT.CRYPTO.keys.objs.signKey = signKey;
// Export private key
window.crypto.subtle.exportKey("pkcs8", privateKey).then(privateKey => {
CHAT.CRYPTO.keys.pem.private = window.btoa(CHAT.ab2str(privateKey));
// Load public key
window.crypto.subtle.importKey("spki", publicKeyBin, CHAT.CRYPTO.config.oaep, true, ["encrypt"]).then(publicKey => {
CHAT.CRYPTO.keys.objs.publicKey = publicKey;
// Export public key
window.crypto.subtle.exportKey("spki", publicKey).then(publicKey => {
CHAT.CRYPTO.keys.pem.public = window.btoa(CHAT.ab2str(publicKey));
// End of keys import
keysStatus(true);
return;
});
});
});
});
});
} catch(e) {
keysStatus(false);
return;
}
});
},
// Import public key
cryptoImportRSAPublicKey: function(hash, publickeyB64) {
publickey = CHAT.str2ab(window.atob(publickeyB64));
window.crypto.subtle.importKey("spki", publickey, CHAT.CRYPTO.config.oaep, true, ["encrypt"]).then(publickeyEncrypt => {
CHAT.CRYPTO.keyCache[hash] = { "encrypt":publickeyEncrypt };
window.crypto.subtle.importKey("spki", publickey, CHAT.CRYPTO.config.pss, true, ["verify"]).then(publickeyVerify => {
CHAT.CRYPTO.keyCache[hash]["verify"] = publickeyVerify;
});
});
},
// Download encryption keys
cryptoDownloadRSAKey: function(type) {
let pemKey = "";
switch(type) {
case "private":
pemKey += CHAT.PEM_PRIVATE_HEADER + "\n";
pemKey += CHAT.CRYPTO.keys.pem.private.replace(/([^\n]{1,64})/g, '$1\n');
pemKey += CHAT.PEM_PRIVATE_FOOTER + "\n";
break;
case "public":
pemKey += CHAT.PEM_PUBLIC_HEADER + "\n";
pemKey += CHAT.CRYPTO.keys.pem.public.replace(/([^\n]{1,64})/g, '$1\n');
pemKey += CHAT.PEM_PUBLIC_FOOTER + "\n";
break;
default:
return;
}
let temp = document.createElement("a");
let blob = new Blob([pemKey], {"type":"text/plain"});
temp.href = window.URL.createObjectURL(blob);
temp.download = type + ".pem";
temp.click();
},
// AES: encrypt message and send
cryptoAesEncryptAndSend: function(plaintext) {
try {
let iv = window.crypto.getRandomValues(new Uint8Array(16));
let plaintextAB = CHAT.str2ab(plaintext);
window.crypto.subtle.encrypt({ "name":"AES-GCM", "iv":iv }, CHAT.CRYPTO.keyCache["aeskey"], plaintextAB).then(ciphertext => {
let ciphertextB64 = window.btoa(CHAT.ab2str(ciphertext));
let ivB64 = window.btoa(CHAT.ab2str(iv));
window.crypto.subtle.sign(CHAT.CRYPTO.config.pss, CHAT.CRYPTO.keys.objs.signKey, plaintextAB).then(signature => {
let signatureB64 = window.btoa(CHAT.ab2str(signature));
CHAT.sendCommand("message", { "ciphertext":ciphertextB64, "iv":ivB64, "signature":signatureB64, "algo":"aes" });
});
});
} catch(e) { }
},
// AES: decrypt message and print
cryptoAesDecryptAndPrint: function(payload) {
try {
let iv = CHAT.str2ab(atob(payload.iv));
let ciphertext = CHAT.str2ab(atob(payload.ciphertext));
let signature = CHAT.str2ab(atob(payload.signature));
window.crypto.subtle.decrypt({ "name":"AES-GCM", "iv":iv }, CHAT.CRYPTO.keyCache["aeskey"], ciphertext).then(plaintext => {
let plaintextObj = JSON.parse(CHAT.ab2str(plaintext));
if(plaintextObj.from != CHAT.USER) {
let publickey = CHAT.cryptoGetUserRSAPublicKey(plaintextObj.from);
if(publickey && publickey.verify) {
window.crypto.subtle.verify(CHAT.CRYPTO.config.pss, publickey.verify, signature, plaintext).then(() => {
CHAT.printMessage("other", plaintextObj);
});
}
}
});
} catch(e) { }
},
// Get user public key from cache
cryptoGetUserRSAPublicKey: function(user) {
try {
let hash = document.getElementById("userslist-user-" + user).dataset.publickey;
if(hash in CHAT.CRYPTO.keyCache) {
return CHAT.CRYPTO.keyCache[hash];
}
} catch(e) {
return false;
}
return false;
},
// RSA: encrypt message and send
cryptoRsaEncryptAndSend: function(publickey, message) {
message = CHAT.str2ab(message);
window.crypto.subtle.encrypt({ "name":CHAT.CRYPTO.config.oaep.name }, publickey, message).then(ciphertext => {
let ciphertextB64 = window.btoa(CHAT.ab2str(ciphertext));
window.crypto.subtle.sign(CHAT.CRYPTO.config.pss, CHAT.CRYPTO.keys.objs.signKey, message).then(signature => {
let signatureB64 = window.btoa(CHAT.ab2str(signature));
CHAT.sendCommand("message", { "ciphertext":ciphertextB64, "signature":signatureB64, "algo":"rsa" });
});
});
},
// RSA: decrypt message, check signature and print
cryptoRsaDecryptAndPrint: function(ciphertext) {
window.crypto.subtle.decrypt({ "name":CHAT.CRYPTO.config.oaep.name }, CHAT.CRYPTO.keys.objs.privateKey, CHAT.str2ab(window.atob(ciphertext.ciphertext))).then(plaintextAB => {
let plaintext = CHAT.ab2str(plaintextAB);
let plaintextObj = JSON.parse(plaintext);
let publickey = CHAT.cryptoGetUserRSAPublicKey(plaintextObj.from);
if(publickey && publickey.verify) {
window.crypto.subtle.verify(CHAT.CRYPTO.config.pss, publickey.verify, CHAT.str2ab(ciphertext.signature), CHAT.str2ab(plaintext)).then(() => {
CHAT.printMessage("other", plaintextObj);
});
}
}).catch(e => { });
},
/////////////////////////////////////////////////////////
//
// Support methods
//
// Convert array buffer to string
ab2str: function(buf) {
return String.fromCharCode.apply(null, new Uint8Array(buf));
},
// Convert string to array buffer
str2ab: function(str) {
let byteArray = new Uint8Array(str.length);
for(let i=0; i<str.length; i++) {
byteArray[i] = str.codePointAt(i);
}
return byteArray;
},
/////////////////////////////////////////////////////////
//
// Chat Interface methods
//
setInterface: function(isConnected) {
if(isConnected) {
CHAT.OBJS["chat-connect"].classList.remove("active");
CHAT.OBJS["chat-localuser-name"].innerHTML = CHAT.USER;
CHAT.OBJS["chat-localuser-keyid"].innerHTML = CHAT.CRYPTO.keys.keyid.substr(0, 12);
CHAT.OBJS["chat-localuser-keyid"].title = "Full Key ID: " + CHAT.CRYPTO.keys.keyid;
CHAT.OBJS["chat-userslist"].classList.add("active");
CHAT.OBJS["chat-localuser"].style.display = "block";
CHAT.OBJS["chat-message"].style.display = "flex";
CHAT.OBJS["userslist-toggler"].classList.add("active");
CHAT.OBJS["chat-message-txt"].focus();
} else {
CHAT.OBJS["chat-localuser"].style.display = "none";
CHAT.OBJS["chat-localuser-name"].innerHTML = "";
CHAT.OBJS["chat-connect"].classList.add("active");
CHAT.OBJS["chat-message"].style.display = "none";
CHAT.OBJS["chat-userslist"].classList.remove("active");
CHAT.OBJS["userslist-toggler"].classList.remove("active");
CHAT.userslistClear();
}
},
// Username field event handler
userEventHandlerKeypress: function(event) {
if(event.key === "Enter") {
event.preventDefault();
CHAT.OBJS["chatInitButton"].click();
}
},
// Message input keypress handler
messageEventHandlerKeypress: function(event) {
if(event.key === "Enter") {
event.preventDefault();
CHAT.sendMessageEventHandlerClick();
}
},
// Send message button click handler
sendMessageEventHandlerClick: function() {
CHAT.OBJS["chat-message-txt"].value = CHAT.OBJS["chat-message-txt"].value.trim();
if(CHAT.OBJS["chat-message-txt"].value == "") return;
// Parse message and send it if it's ok
message = (/@([a-zA-Z0-9]*) (.*)/g).exec(CHAT.OBJS["chat-message-txt"].value.trim());
if((message == null) || (message[1] == "") || (message[2] == "")) {
CHAT.printMessage("signal", "Destination or message missing");
return false;
}
CHAT.sendMessage(message[1].trim(), message[2].trim());
CHAT.OBJS["chat-message-txt"].value = (CHAT.OBJS["chat-message-txt"].value.charAt(0) == "@") ? CHAT.OBJS["chat-message-txt"].value.substring(0, CHAT.OBJS["chat-message-txt"].value.indexOf(" ")) + " " : "";
CHAT.OBJS["chat-message-txt"].focus();
},
// Userlist toggles button click handler
userslistTogglerEventHandlerClick: function(event) {
CHAT.OBJS["userslist-toggler"].innerHTML = (CHAT.OBJS["chat"].classList.toggle("userslist-open")) ? "▲ Users list ▲" : "▼ Users list ▼";
},
// Set message destination (@username in message field)
setMessageDestination: function(user) {
user = user.trim();
if(user == "") return false;
CHAT.OBJS["chat-message-txt"].value = "@" + user + " ";
CHAT.OBJS["chat-message-txt"].focus();
},
// Print received message
printMessage: function(type, message, clearMessageTxtInputField=false) {
// Check first if the message is the local copy of an admin message sent from the server, and if yes mangle the message accordingly
if(CHAT.CONFIGS["is-admin"]) {
if(message.isWebAdminMsgCopy) {
message.message = JSON.parse(message.message);
if(message.message.to == CHAT.ADMIN) return;
message = { "from":message.from, "to":message.message.to + " (via server)", "message":message.message.message };
type = "my";
} else {
if((message.from == CHAT.ADMIN) && (message.to != CHAT.ADMIN) && (type == "other")) return;
}
}
// Message block
let msgBlock = document.createElement("li");
msgBlock.className = "clearfix";
// Message user
if((type != "signal")) {
let msgUser = document.createElement("div");
msgUser.classList.add("message-user");
switch(type) {
case "my":
msgUser.innerHTML = "To <b>" + message.to + "</b>:";
msgUser.classList.add("text-right");
msgUser.addEventListener("click", function() { CHAT.setMessageDestination(message.to); });
break;
case "other":
msgUser.innerHTML = "From <b>" + message.from + "</b> to <b>" + message.to + "</b>:";
msgUser.addEventListener("click", function() { CHAT.setMessageDestination(message.from); });
break;
}
msgBlock.appendChild(msgUser);
}
// Message text
let msgMessage = document.createElement("div");
msgMessage.classList.add("message");
msgMessage.classList.add(type);
if((type == "signal")) {
msgMessage.innerHTML = message + "<div class='message-date'>" + (new Date()).toLocaleString() + "</div>";
} else {
if((message.from == CHAT.ADMIN) && (message.to == CHAT.ADMIN)) msgMessage.classList.add("admin2admin");
else if((message.from == CHAT.ADMIN) || (message.to == CHAT.ADMIN)) msgMessage.classList.add("admin");
// Message content
msgMessage.appendChild(document.createTextNode(message.message));
// Date
let msgDate = document.createElement("div");
msgDate.classList.add("message-date");
msgDate.appendChild(document.createTextNode((new Date()).toLocaleString()));
msgMessage.appendChild(msgDate);
msgMessage.addEventListener("click", function() { CHAT.setMessageDestination((type == "my") ? message.to : message.from); });
}
msgBlock.appendChild(msgMessage);
//Output new message
CHAT.OBJS["receivedMessages"].appendChild(msgBlock);
CHAT.OBJS["receivedMessages"].scrollTop = CHAT.OBJS["receivedMessages"].scrollHeight;
//Check if to clear the new message text input field
if(clearMessageTxtInputField) {
CHAT.OBJS["chat-message-txt"].value = "";
CHAT.OBJS["chat-message-txt"].focus();
}
},
// Add user to list
userslistAdd: function(user, publickey) {
let userBlock = document.createElement("li");
userBlock.id = "userslist-user-" + user;
userBlock.title = "Full Key ID: " + publickey.hash;
userBlock.classList.add("userslist-user");
if((user == CHAT.USER) && (user != CHAT.ADMIN)) userBlock.classList.add("hide");
userBlock.innerHTML = "<div class='user'>" + user + "</div><div class='keyid'>Key ID: " + publickey.hash.substr(0, 12) + "</div>";
userBlock.dataset.user = user;
if(((typeof publickey) === "object") && (publickey.text != "")) {
userBlock.dataset.user = user;
userBlock.dataset.publickey = publickey.hash;
CHAT.cryptoImportRSAPublicKey(publickey.hash, publickey.text);
userBlock.classList.add("lock");
}
userBlock.addEventListener("click", function(event) {
CHAT.setMessageDestination(event.target.dataset.user);
});
CHAT.OBJS["userslist"].appendChild(userBlock);
},
// Remove user from list
userslistRemove: function(user) {
let userBlock = document.getElementById("userslist-user-" + user);
if(userBlock) {
CHAT.OBJS["userslist"].removeChild(userBlock);
}
},
// Clear users list
userslistClear: function() {
// Remove all destination
while(CHAT.OBJS["userslist"].firstChild) {
CHAT.OBJS["userslist"].removeChild(userslist.firstChild);
}
// Add @all destination
if(!CHAT.CONFIGS["disable-all"] || CHAT.CONFIGS["is-admin"]) {
let userBlock = document.createElement("li");
userBlock.innerHTML = "<div class='user'>@all</div>";
userBlock.classList.add("lock");
userBlock.addEventListener("click", function(event) {
CHAT.setMessageDestination("all");
});
CHAT.OBJS["userslist"].appendChild(userBlock);
}
},
showCustomKeysFields: function(event) {
event.target.innerHTML = (CHAT.OBJS["custom-keys"].classList.toggle("active")) ? "Use random keys" : "Use custom keys";
}
}
// Load chat application when page loading is complete
window.addEventListener("load", CHAT.load);