From 5569c4af63d87c929907fd3e517144666bd013de Mon Sep 17 00:00:00 2001 From: Sharon Kennedy Date: Wed, 4 Mar 2020 22:05:09 -0500 Subject: [PATCH] fallback to unencryted chat if initCrypto fails or on decryption error --- src/components/chatbox.jsx | 176 ++++++++++++++++++++++--------------- 1 file changed, 107 insertions(+), 69 deletions(-) diff --git a/src/components/chatbox.jsx b/src/components/chatbox.jsx index 212dcf4..6fe17a2 100644 --- a/src/components/chatbox.jsx +++ b/src/components/chatbox.jsx @@ -24,12 +24,16 @@ const DEFAULT_ROOM_NAME = "Support Chat" const BOT_USERNAME = "@help-bot:rhok.space" const ENCRYPTION_CONFIG = { "algorithm": "m.megolm.v1.aes-sha2" }; const ENCRYPTION_NOTICE = "Messages in this chat are secured with end-to-end encryption." +const UNENCRYPTION_NOTICE = "End-to-end message encryption is not available on this browser." const INTRO_MESSAGE = "This chat application does not collect any of your personal data or any data from your use of this service." const AGREEMENT_MESSAGE = "👉 Do you want to continue? Type yes or no." const CONFIRMATION_MESSAGE = "Waiting for a facilitator to join the chat..." +const RESTARTING_UNENCRYPTED_CHAT_MESSAGE = "Restarting chat without encryption." const EXIT_MESSAGE = "The chat was not started." const FACILITATOR_ROOM_ID = '!pYVVPyFKacZeKZbWyz:rhok.space' const TERMS_URL="https://tosdr.org/" +const SUPPORT_SEEKER_DISPLAY_NAME="Anonymous" +const MATRIX_ERROR_MESSAGE = "There was an error in the messaging service. Please try again later." const initialState = { @@ -172,6 +176,8 @@ class ChatBox extends React.Component { username: username, password: password, localStorage: localStorage, + sessionId: sessionId, + deviceId: data.device_id, }) // create new client with full options @@ -184,7 +190,7 @@ class ChatBox extends React.Component { } client = matrix.createClient(opts) - client.setDisplayName("Anonymous") + client.setDisplayName(SUPPORT_SEEKER_DISPLAY_NAME) }) .catch(err => { console.log("Registration error", err) @@ -196,9 +202,40 @@ class ChatBox extends React.Component { client: client }) }) + .catch(err => this.initializeUnencryptedChat()) }) } + initializeUnencryptedChat = () => { + this.setState({ ready: false }) + + let opts = { + baseUrl: this.props.matrixServerUrl, + accessToken: this.state.accessToken, + userId: this.state.userId, + deviceId: this.state.deviceId + } + + let client = matrix.createClient(opts) + client.setDisplayName(SUPPORT_SEEKER_DISPLAY_NAME) + return client.startClient() + .then(() => { + this.setState({ + client: client, + isCryptoEnabled: false, + }) + }) + } + + handleDecryptionError = () => { + this.displayBotMessage({ body: RESTARTING_UNENCRYPTED_CHAT_MESSAGE }) + + this.state.client.leave(this.state.roomId) + .then(() => this.state.client.stopClient()) + .then(() => this.state.client.clearStores()) + .then(() => this.initializeUnencryptedChat()) + } + verifyAllRoomDevices = async function(roomId) { let room = this.state.client.getRoom(roomId); let members = (await room.getEncryptionTargetMembers()).map(x => x["userId"]) @@ -211,44 +248,44 @@ class ChatBox extends React.Component { } } - createRoom = () => { + createRoom = async function() { const currentDate = new Date() const chatDate = currentDate.toLocaleDateString() const chatTime = currentDate.toLocaleTimeString() - return this.state.client.createRoom({ + let roomConfig = { room_alias_name: `private-support-chat-${uuid()}`, invite: [BOT_USERNAME], visibility: 'private', name: `${chatDate} - ${this.props.roomName} - started at ${chatTime}`, - initial_state: [ + } + + const isCryptoEnabled = await this.state.client.isCryptoEnabled() + + if (isCryptoEnabled) { + roomConfig.initial_state = [ { type: 'm.room.encryption', state_key: '', content: ENCRYPTION_CONFIG, }, ] - }) - .then(data => { - this.verifyAllRoomDevices(data.room_id) - this.state.client.setPowerLevel(data.room_id, BOT_USERNAME, 100) - .then(() => console.log("Set bot power level to 100")) - .catch(err => console.log("Error setting bot power level", err)) + } - const confirmationMsg = { - id: 'confirmation-msg-id', - type: 'm.room.message', - sender: BOT_USERNAME, - content: { body: CONFIRMATION_MESSAGE }, - } - const messages = [...this.state.messages] - messages.push(confirmationMsg) - this.setState({ - roomId: data.room_id, - messages - }) - }) - .catch(err => { - console.log("Unable to create room", err) + const { room_id } = await this.state.client.createRoom(roomConfig) + + this.state.client.setPowerLevel(room_id, BOT_USERNAME, 100) + + if (isCryptoEnabled) { + this.verifyAllRoomDevices(room_id) + } else { + this.displayBotMessage({ body: UNENCRYPTION_NOTICE }) + } + + this.displayBotMessage({ body: CONFIRMATION_MESSAGE }) + + this.setState({ + roomId: room_id, + isCryptoEnabled }) } @@ -274,6 +311,34 @@ class ChatBox extends React.Component { }) } + displayFakeMessage = (content, sender) => { + const msgList = [...this.state.messages] + const msg = { + id: uuid(), + type: 'm.room.message', + sender: sender, + roomId: this.state.roomId, + content: content, + } + msgList.push(msg) + + this.setState({ messages: msgList }) + } + + displayBotMessage = (content, roomId) => { + const msgList = [...this.state.messages] + const msg = { + id: uuid(), + type: 'm.room.message', + sender: BOT_USERNAME, + roomId: roomId || this.state.roomId, + content: content, + } + msgList.push(msg) + + this.setState({ messages: msgList }) + } + handleMessageEvent = event => { const message = { id: event.getId(), @@ -283,8 +348,6 @@ class ChatBox extends React.Component { content: event.getContent(), } - console.log("INCOMING MESSAGE", message) - const messages = [...this.state.messages] messages.push(message) this.setState({ messages }) @@ -309,35 +372,34 @@ class ChatBox extends React.Component { this.state.client.on("Room.timeline", (event, room, toStartOfTimeline) => { if (event.getType() === "m.room.encryption") { - const msgList = [...this.state.messages] - const encryptionMsg = { - id: 'encryption-msg-id', - type: 'm.room.message', - sender: BOT_USERNAME, - roomId: room.room_id, - content: { body: ENCRYPTION_NOTICE }, - } - msgList.push(encryptionMsg) + this.displayBotMessage({ body: ENCRYPTION_NOTICE }, room.room_id) + } - this.setState({ messages: msgList }) + if (event.getType() === "m.room.message" && !this.state.isCryptoEnabled) { + if (event.isEncrypted()) { + return; + } + this.handleMessageEvent(event) } }); - this.state.client.on("Event.decrypted", (event) => { + this.state.client.on("Event.decrypted", (event, err) => { + if (err) { + return this.handleDecryptionError() + } if (event.getType() === "m.room.message") { this.handleMessageEvent(event) } }); this.state.client.on("RoomMember.typing", (event, member) => { - if (member.typing) { + if (member.typing && event.getRoomId() === this.state.roomId) { this.setState({ typingStatus: `${member.name} is typing...`}) } else { this.setState({ typingStatus: null }) } }); - } if (!prevState.ready && this.state.ready) { @@ -374,45 +436,21 @@ class ChatBox extends React.Component { if (this.state.awaitingAgreement && !this.state.client) { if (this.state.inputValue.toLowerCase() === 'yes') { - const fakeUserMsg = { - id: 'fake-msg-id', - type: 'm.room.message', - sender: 'from-me', - content: { body: this.state.inputValue }, - } - - const messages = [...this.state.messages] - messages.push(fakeUserMsg) - this.setState({ inputValue: "", messages }) + this.displayFakeMessage({ body: this.state.inputValue }, 'from-me') + this.setState({ inputValue: "" }) return this.initializeChat() } else { - const fakeUserMsg = { - id: 'fake-msg-id', - type: 'm.room.message', - sender: 'from-me', - content: { body: this.state.inputValue }, - } - - const exitMsg = { - id: 'exit-msg-id', - type: 'm.room.message', - sender: BOT_USERNAME, - content: { body: EXIT_MESSAGE }, - } - - const messages = [...this.state.messages] - messages.push(fakeUserMsg) - messages.push(exitMsg) - this.setState({ inputValue: "", messages }) + this.displayFakeMessage({ body: this.state.inputValue }, 'from-me') + this.displayBotMessage({ body: EXIT_MESSAGE }) + return this.setState({ inputValue: "" }) } } if (this.state.client && this.state.roomId) { return this.sendMessage() } - } render() {