feat: Un-encrypted messages not allowed in E2EE rooms (#32040)

Co-authored-by: gabriellsh <40830821+gabriellsh@users.noreply.github.com>
Co-authored-by: Hugo Costa <20212776+hugocostadev@users.noreply.github.com>

.changeset/slow-cars-press.md

@@ -0,0 +1,8 @@
+---
+'@rocket.chat/i18n': minor
+'@rocket.chat/meteor': minor
+---
+
+Introduced a new setting which doesn't allow users to access encrypted rooms until E2EE is configured and also doesn't allow users to send un-encrypted messages in encrypted rooms.
+
+New room setup for E2EE feature which helps users to setup their E2EE keys and introduced states to E2EE feature.

apps/meteor/app/e2e/client/E2EEState.ts

@@ -0,0 +1,9 @@
+export enum E2EEState {
+	NOT_STARTED = 'NOT_STARTED',
+	DISABLED = 'DISABLED',
+	LOADING_KEYS = 'LOADING_KEYS',
+	READY = 'READY',
+	SAVE_PASSWORD = 'SAVE_PASSWORD',
+	ENTER_PASSWORD = 'ENTER_PASSWORD',
+	ERROR = 'ERROR',
+}

apps/meteor/app/e2e/client/rocketchat.e2e.room.js

@@ -41,6 +41,7 @@ const permitedMutations = {
 		E2ERoomState.ERROR,
 		E2ERoomState.DISABLED,
 		E2ERoomState.WAITING_KEYS,
+		E2ERoomState.CREATING_KEYS,
 	],
 };
 
@@ -92,6 +93,10 @@ export class E2ERoom extends Emitter {
 		logError(`E2E ROOM { state: ${this.state}, rid: ${this.roomId} }`, ...msg);
 	}
 
+	getState() {
+		return this.state;
+	}
+
 	setState(requestedState) {
 		const currentState = this.state;
 		const nextState = filterMutation(currentState, requestedState);
@@ -208,6 +213,10 @@ export class E2ERoom extends Emitter {
 
 	// Initiates E2E Encryption
 	async handshake() {
+		if (!e2e.isReady()) {
+			return;
+		}
+
 		if (this.state !== E2ERoomState.KEYS_RECEIVED && this.state !== E2ERoomState.NOT_STARTED) {
 			return;
 		}
@@ -459,5 +468,11 @@ export class E2ERoom extends Emitter {
 		}
 
 		this.encryptKeyForOtherParticipants();
+		this.setState(E2ERoomState.READY);
+	}
+
+	onStateChange(cb) {
+		this.on('STATE_CHANGED', cb);
+		return () => this.off('STATE_CHANGED', cb);
 	}
 }