node-red-contrib-matrix-chat/src/matrix-device-verification.js
Skylar Sadlier d01733c647 closes #48
- Device verification can now be requested or received
2022-03-17 19:38:29 -06:00

234 lines
11 KiB
JavaScript

const {Phase} = require("matrix-js-sdk/lib/crypto/verification/request/VerificationRequest");
const {CryptoEvent} = require("matrix-js-sdk/lib/crypto");
module.exports = function(RED) {
const verificationRequests = new Map();
function MatrixDeviceVerification(n) {
RED.nodes.createNode(this, n);
var node = this;
this.name = n.name;
this.server = RED.nodes.getNode(n.server);
this.mode = n.mode;
if (!node.server) {
node.warn("No configuration node");
return;
}
if(!node.server.e2ee) {
node.error("End-to-end encryption needs to be enabled to use this.");
}
node.status({ fill: "red", shape: "ring", text: "disconnected" });
node.server.on("disconnected", function(){
node.status({ fill: "red", shape: "ring", text: "disconnected" });
});
node.server.on("connected", function() {
node.status({ fill: "green", shape: "ring", text: "connected" });
});
function getKeyByValue(object, value) {
return Object.keys(object).find(key => object[key] === value);
}
switch(node.mode) {
default:
node.error("Node not configured with a mode");
break;
case 'request':
node.on('input', async function(msg){
if(!msg.userId) {
node.error("msg.userId is required for start verification mode");
}
node.server.matrixClient.requestVerification(msg.userId, msg.devices || null)
.then(function(e) {
node.log("Successfully requested verification");
let verifyRequestId = msg.userId + ':' + e.channel.deviceId;
verificationRequests.set(verifyRequestId, e);
node.send({
verifyRequestId: verifyRequestId, // internally used to reference between nodes
verifyMethods: e.methods,
userId: msg.userId,
deviceIds: e.channel.devices,
selfVerification: e.isSelfVerification,
phase: getKeyByValue(Phase, e.phase)
});
})
.catch(function(e){
node.warn("Error requesting device verification: " + e);
msg.error = e;
node.send([null, msg]);
});
});
break;
case 'receive':
/**
* Fires when a key verification is requested.
* @event module:client~MatrixClient#"crypto.verification.request"
* @param {object} data
* @param {MatrixEvent} data.event the original verification request message
* @param {Array} data.methods the verification methods that can be used
* @param {Number} data.timeout the amount of milliseconds that should be waited
* before cancelling the request automatically.
* @param {Function} data.beginKeyVerification a function to call if a key
* verification should be performed. The function takes one argument: the
* name of the key verification method (taken from data.methods) to use.
* @param {Function} data.cancel a function to call if the key verification is
* rejected.
*/
node.server.matrixClient.on(CryptoEvent.VerificationRequest, async function(data){
if(data.phase === Phase.Cancelled || data.phase === Phase.Done) {
return;
}
if(data.requested || true) {
let verifyRequestId = data.targetDevice.userId + ':' + data.targetDevice.deviceId;
verificationRequests.set(verifyRequestId, data);
node.send({
verifyRequestId: verifyRequestId, // internally used to reference between nodes
verifyMethods: data.methods,
userId: data.targetDevice.userId,
deviceId: data.targetDevice.deviceId,
selfVerification: data.isSelfVerification,
phase: getKeyByValue(Phase, data.phase)
});
}
});
node.on('close', function(done) {
// clear verification requests
verificationRequests.clear();
done();
});
break;
case 'start':
node.on('input', async function(msg){
if(!msg.verifyRequestId || !verificationRequests.has(msg.verifyRequestId)) {
// if(msg.userId && msg.deviceId) {
// node.server.beginKeyVerification("m.sas.v1", msg.userId, msg.deviceId);
// }
node.error("invalid verification request (invalid msg.verifyRequestId): " + (msg.verifyRequestId || null));
}
var data = verificationRequests.get(msg.verifyRequestId);
if(msg.cancel) {
await data._verifier.cancel();
verificationRequests.delete(msg.verifyRequestId);
} else {
try {
data.on('change', async function() {
var that = this;
if(this.phase === Phase.Started) {
let verifierCancel = function(){
let verifyRequestId = that.targetDevice.userId + ':' + that.targetDevice.deviceId;
if(verificationRequests.has(verifyRequestId)) {
verificationRequests.delete(verifyRequestId);
}
};
data._verifier.on('cancel', function(e){
node.warn("Device verification cancelled " + e);
verifierCancel();
});
let show_sas = function(e) {
// e = {
// sas: {
// decimal: [ 8641, 3153, 2357 ],
// emoji: [
// [Array], [Array],
// [Array], [Array],
// [Array], [Array],
// [Array]
// ]
// },
// confirm: [AsyncFunction: confirm],
// cancel: [Function: cancel],
// mismatch: [Function: mismatch]
// }
msg.payload = e.sas;
msg.emojis = e.sas.emoji.map(function(emoji, i) {
return emoji[0];
});
msg.emojis_text = e.sas.emoji.map(function(emoji, i) {
return emoji[1];
});
node.send(msg);
};
data._verifier.on('show_sas', show_sas);
data._verifier.verify()
.then(function(e){
data._verifier.off('show_sas', show_sas);
data._verifier.done();
}, function(e) {
verifierCancel();
node.warn(e);
// @todo return over second output
});
}
});
data.emit("change");
await data.accept();
} catch(e) {
console.log("ERROR", e);
}
}
});
break;
case 'cancel':
node.on('input', async function(msg){
if(!msg.verifyRequestId || !verificationRequests.has(msg.verifyRequestId)) {
node.error("Invalid verification request: " + (msg.verifyRequestId || null));
}
var data = verificationRequests.get(msg.verifyRequestId);
if(data) {
data.cancel()
.then(function(e){
node.send([msg, null]);
})
.catch(function(e) {
msg.error = e;
node.send([null, msg]);
});
}
});
break;
case 'accept':
node.on('input', async function(msg){
if(!msg.verifyRequestId || !verificationRequests.has(msg.verifyRequestId)) {
node.error("Invalid verification request: " + (msg.verifyRequestId || null));
}
var data = verificationRequests.get(msg.verifyRequestId);
if(data._verifier && data._verifier.sasEvent) {
data._verifier.sasEvent.confirm()
.then(function(e){
node.send([msg, null]);
})
.catch(function(e) {
msg.error = e;
node.send([null, msg]);
});
} else {
node.error("Verification must be started");
}
});
break;
}
}
RED.nodes.registerType("matrix-device-verification", MatrixDeviceVerification);
}