fix: Prevent E2EE key reset on startup (#32653)

Author: rodrigok

.changeset/nice-zebras-admire.md

@@ -0,0 +1,6 @@
+---
+"@rocket.chat/meteor": patch
+"@rocket.chat/rest-typings": patch
+---
+
+Prevent E2EE key reset on startup due to possible race conditions

apps/meteor/app/api/server/v1/e2e.ts

@@ -113,6 +113,8 @@ API.v1.addRoute(
  *                  type: string
  *                private_key:
  *                  type: string
+ *                force:
+ *                  type: boolean
  *      responses:
  *        200:
  *          content:
@@ -135,11 +137,12 @@ API.v1.addRoute(
 	{
 		async post() {
 			// eslint-disable-next-line @typescript-eslint/naming-convention
-			const { public_key, private_key } = this.bodyParams;
+			const { public_key, private_key, force } = this.bodyParams;
 
 			await Meteor.callAsync('e2e.setUserPublicAndPrivateKeys', {
 				public_key,
 				private_key,
+				force,
 			});
 
 			return API.v1.success();

apps/meteor/app/e2e/client/rocketchat.e2e.ts

@@ -156,7 +156,11 @@ class E2E extends Emitter {
 		delete this.instancesByRoomId[rid];
 	}
 
-	async persistKeys({ public_key, private_key }: KeyPair, password: string): Promise<void> {
+	async persistKeys(
+		{ public_key, private_key }: KeyPair,
+		password: string,
+		{ force }: { force: boolean } = { force: false },
+	): Promise<void> {
 		if (typeof public_key !== 'string' || typeof private_key !== 'string') {
 			throw new Error('Failed to persist keys as they are not strings.');
 		}
@@ -170,6 +174,7 @@ class E2E extends Emitter {
 		await sdk.rest.post('/v1/e2e.setUserPublicAndPrivateKeys', {
 			public_key,
 			private_key: encodedPrivateKey,
+			force,
 		});
 	}
 
@@ -300,7 +305,7 @@ class E2E extends Emitter {
 	}
 
 	async changePassword(newPassword: string): Promise<void> {
-		await this.persistKeys(this.getKeysFromLocalStorage(), newPassword);
+		await this.persistKeys(this.getKeysFromLocalStorage(), newPassword, { force: true });
 
 		if (Meteor._localStorage.getItem('e2e.randomPassword')) {
 			Meteor._localStorage.setItem('e2e.randomPassword', newPassword);
@@ -316,7 +321,10 @@ class E2E extends Emitter {
 			this.db_private_key = private_key;
 		} catch (error) {
 			this.setState(E2EEState.ERROR);
-			return this.error('Error fetching RSA keys: ', error);
+			this.error('Error fetching RSA keys: ', error);
+			// Stop any process since we can't communicate with the server
+			// to get the keys. This prevents new key generation
+			throw error;
 		}
 	}
 

apps/meteor/app/e2e/server/methods/setUserPublicAndPrivateKeys.ts

@@ -5,7 +5,7 @@ import { Meteor } from 'meteor/meteor';
 declare module '@rocket.chat/ui-contexts' {
 	// eslint-disable-next-line @typescript-eslint/naming-convention
 	interface ServerMethods {
-		'e2e.setUserPublicAndPrivateKeys'({ public_key, private_key }: { public_key: string; private_key: string }): void;
+		'e2e.setUserPublicAndPrivateKeys'({ public_key, private_key }: { public_key: string; private_key: string; force?: boolean }): void;
 	}
 }
 
@@ -19,6 +19,16 @@ Meteor.methods<ServerMethods>({
 			});
 		}
 
+		if (!keyPair.force) {
+			const keys = await Users.fetchKeysByUserId(userId);
+
+			if (keys.private_key && keys.public_key) {
+				throw new Meteor.Error('error-keys-already-set', 'Keys already set', {
+					method: 'e2e.setUserPublicAndPrivateKeys',
+				});
+			}
+		}
+
 		await Users.setE2EPublicAndPrivateKeysByUserId(userId, {
 			private_key: keyPair.private_key,
 			public_key: keyPair.public_key,

apps/meteor/app/file-upload/client/lib/fileUploadHandler.ts

@@ -5,7 +5,9 @@ import { Tracker } from 'meteor/tracker';
 Tracker.autorun(() => {
 	const userId = Meteor.userId();
 
-	if (userId) {
+	// Check for Meteor.loggingIn to be reactive and ensure it will process only after login finishes
+	// preventing race condition setting the rc_token as null forever
+	if (userId && Meteor.loggingIn() === false) {
 		const secure = location.protocol === 'https:' ? '; secure' : '';
 
 		document.cookie = `rc_uid=${escape(userId)}; path=/${secure}`;

packages/rest-typings/src/v1/e2e.ts

@@ -8,6 +8,7 @@ const ajv = new Ajv({
 type E2eSetUserPublicAndPrivateKeysProps = {
 	public_key: string;
 	private_key: string;
+	force?: boolean;
 };
 
 const E2eSetUserPublicAndPrivateKeysSchema = {

packages/rest-typings/src/v1/e2e/e2eSetUserPublicAndPrivateKeysParamsPOST.ts

@@ -7,6 +7,7 @@ const ajv = new Ajv({
 export type e2eSetUserPublicAndPrivateKeysParamsPOST = {
 	public_key: string;
 	private_key: string;
+	force?: boolean;
 };
 
 const e2eSetUserPublicAndPrivateKeysParamsPOSTSchema = {
@@ -18,6 +19,9 @@ const e2eSetUserPublicAndPrivateKeysParamsPOSTSchema = {
 		private_key: {
 			type: 'string',
 		},
+		force: {
+			type: 'boolean',
+		},
 	},
 	additionalProperties: false,
 	required: ['public_key', 'private_key'],