matrix-appservice-kakaotalk/node/src/client.js

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// matrix-appservice-kakaotalk - A Matrix-KakaoTalk puppeting bridge.
// Copyright (C) 2022 Tulir Asokan, Andrew Ferrazzutti
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
import { Long } from "bson"
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import {
AuthApiClient,
OAuthApiClient,
ServiceApiClient,
TalkClient,
KnownAuthStatusCode,
util,
} from "node-kakao"
/** @typedef {import("node-kakao").OAuthCredential} OAuthCredential */
/** @typedef {import("node-kakao").ChannelType} ChannelType */
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/** @typedef {import("node-kakao").ReplyAttachment} ReplyAttachment */
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/** @typedef {import("node-kakao").MentionStruct} MentionStruct */
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/** @typedef {import("node-kakao/dist/talk").TalkChannelList} TalkChannelList */
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import chat from "node-kakao/chat"
const { KnownChatType } = chat
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import { emitLines, promisify } from "./util.js"
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/**
* @typedef {Object} ChannelProps
* @property {Long} id
* @property {ChannelType} type
*/
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ServiceApiClient.prototype.requestFriendList = async function() {
const res = await this._client.requestData(
"POST",
`${this.getFriendsApiPath("update.json")}`,
{
phone_number_type: 1,
}
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)
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return {
status: res.status,
success: res.status === 0,
result: res,
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}
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}
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class UserClient {
static #initializing = false
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#talkClient = new TalkClient()
get talkClient() { return this.#talkClient }
/** @type {ServiceApiClient} */
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#serviceClient
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get serviceClient() { return this.#serviceClient }
/**
* DO NOT CONSTRUCT DIRECTLY. Callers should use {@link UserClient#create} instead.
* @param {string} mxid
* @param {PeerClient} peerClient TODO Make RPC user-specific instead of needing this
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*/
constructor(mxid, peerClient) {
if (!UserClient.#initializing) {
throw new Error("Private constructor")
}
UserClient.#initializing = false
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this.mxid = mxid
this.peerClient = peerClient
this.#talkClient.on("chat", (data, channel) => {
this.log(`${data.chat.logId} received in channel ${channel.channelId}`)
return this.write("chat", {
//is_sequential: true, // TODO Make sequential per user & channel (if it isn't already)
chatlog: data.chat,
channelId: channel.channelId,
channelType: channel.info.type,
})
})
this.#talkClient.on("chat_deleted", (feedChatlog, channel, feed) => {
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this.log(`${feed.logId} deleted in channel ${channel.channelId} by user ${feedChatlog.sender.userId}`)
return this.write("chat_deleted", {
chatId: feed.logId,
senderId: feedChatlog.sender.userId,
timestamp: feedChatlog.sendAt,
channelId: channel.channelId,
channelType: channel.info.type,
})
})
this.#talkClient.on("message_hidden", (hideLog, channel, feed) => {
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this.log(`Message ${feed.logId} hid from channel ${channel.channelId} by user ${hideLog.sender.userId}`)
return this.write("chat_deleted", {
chatId: feed.logId,
senderId: hideLog.sender.userId,
timestamp: hideLog.sendAt,
channelId: channel.channelId,
channelType: channel.info.type,
})
})
this.#talkClient.on("chat_read", (chat, channel, reader) => {
this.log(`${chat.logId} read in channel ${channel.channelId} by ${reader.userId}`)
return this.write("chat_read", {
chatId: chat.logId,
senderId: reader.userId,
channelId: channel.channelId,
channelType: channel.info.type,
})
})
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this.#talkClient.on("profile_changed", (channel, lastInfo, user) => {
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this.log(`Profile of ${user.userId} changed (channel: ${channel ? channel.channelId : "None"})`)
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return this.write("profile_changed", {
info: user,
/* TODO Is this ever a per-channel profile change?
channelId: channel.channelId,
channelType: channel.info.type,
*/
})
})
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this.#talkClient.on("channel_join", channel => {
this.log(`Joined channel ${channel.channelId}`)
return this.write("channel_join", {
channelInfo: channel.info,
})
})
this.#talkClient.on("channel_left", channel => {
this.log(`Left channel ${channel.channelId}`)
return this.write("channel_left", {
channelId: channel.channelId,
channelType: channel.info.type,
})
})
this.#talkClient.on("channel_kicked", (kickedLog, channel, feed) => {
this.log(`User ${feed.member.userId} kicked from channel ${channel.channelId} by user ${kickedLog.sender.userId}`)
return this.write("channel_kicked", {
userId: feed.member.userId,
senderId: kickedLog.sender.userId,
channelId: channel.channelId,
channelType: channel.info.type,
})
})
this.#talkClient.on("user_join", (joinLog, channel, user, feed) => {
this.log(`User ${user.userId} joined channel ${channel.channelId}`)
return this.write("user_join", {
userId: user.userId,
channelId: channel.channelId,
channelType: channel.info.type,
})
})
this.#talkClient.on("user_left", (leftLog, channel, user, feed) => {
this.log(`User ${user.userId} left channel ${channel.channelId}`)
return this.write("user_left", {
userId: user.userId,
channelId: channel.channelId,
channelType: channel.info.type,
})
})
this.#talkClient.on("disconnected", (reason) => {
this.log(`Disconnected (reason=${reason})`)
this.disconnect()
return this.write("disconnected", {
reason: reason,
})
})
this.#talkClient.on("switch_server", () => {
this.log(`Server switch requested`)
return this.write("switch_server", {
is_sequential: true,
})
})
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this.#talkClient.on("error", (err) => {
this.log(`Client error: ${err}`)
return this.write("error", {
error: err,
})
})
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}
/**
* @param {string} mxid The ID of the associated Matrix user
* @param {OAuthCredential} credential The token to log in with, obtained from prior login
* @param {PeerClient} peerClient What handles RPC
*/
static async create(mxid, credential, peerClient) {
this.#initializing = true
const userClient = new UserClient(mxid, peerClient)
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userClient.#serviceClient = await ServiceApiClient.create(credential)
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return userClient
}
log(...text) {
console.log(`[API/${this.mxid}]`, ...text)
}
error(...text) {
console.error(`[API/${this.mxid}]`, ...text)
}
/**
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* @param {ChannelProps} channelProps
*/
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async getChannel(channelProps) {
let channel = this.#talkClient.channelList.get(channelProps.id)
if (channel) {
return channel
} else {
const channelList = getChannelListForType(
this.#talkClient.channelList,
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channelProps.type
)
const res = await channelList.addChannel({
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channelId: channelProps.id,
})
if (!res.success) {
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throw new Error(`Unable to add ${channelProps.type} channel ${channelProps.id}`)
}
return res.result
}
}
/**
* @param {OAuthCredential} credential The token to log in with, obtained from prior login
*/
async connect(credential) {
// TODO Don't re-login if possible. But must still return a LoginResult!
this.disconnect()
return await this.#talkClient.login(credential)
}
disconnect() {
if (this.#talkClient.logon) {
this.#talkClient.close()
}
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}
/**
* Send a user-specific command with (optional) data to the socket.
*
* @param {string} command - The data to write.
* @param {?object} data - The data to write.
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*/
write(command, data) {
return this.peerClient.write({
id: --this.peerClient.notificationID,
command: `${command}:${this.mxid}`,
...data
})
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}
}
export default class PeerClient {
/**
* @param {import("./clientmanager.js").default} manager
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* @param {import("net").Socket} socket
* @param {number} connID
*/
constructor(manager, socket, connID) {
this.manager = manager
this.socket = socket
this.connID = connID
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this.stopped = false
this.notificationID = 0
this.maxCommandID = 0
this.peerID = null
/** @type {Map<string, UserClient>} */
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this.userClients = new Map()
}
log(...text) {
if (this.peerID) {
console.log(`[API/${this.peerID}/${this.connID}]`, ...text)
} else {
console.log(`[API/${this.connID}]`, ...text)
}
}
error(...text) {
if (this.peerID) {
console.error(`[API/${this.peerID}/${this.connID}]`, ...text)
} else {
console.error(`[API/${this.connID}]`, ...text)
}
}
start() {
this.log("Received connection", this.connID)
emitLines(this.socket)
this.socket.on("line", line => this.handleLine(line)
.catch(err => this.log("Error handling line:", err)))
this.socket.on("end", this.handleEnd)
setTimeout(() => {
if (!this.peerID && !this.stopped) {
this.log("Didn't receive register request within 3 seconds, terminating")
this.stop("Register request timeout")
}
}, 3000)
}
async stop(error = null) {
if (this.stopped) {
return
}
this.stopped = true
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this.#closeUsers()
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try {
await this.write({ id: --this.notificationID, command: "quit", error })
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await promisify(cb => this.socket.end(cb))
} catch (err) {
this.error("Failed to end connection:", err)
this.socket.destroy(err)
}
}
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handleEnd = () => {
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this.stopped = true
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this.#closeUsers()
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if (this.peerID && this.manager.clients.get(this.peerID) === this) {
this.manager.clients.delete(this.peerID)
}
this.log(`Connection closed (peer: ${this.peerID})`)
}
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#closeUsers() {
this.log("Closing all API clients for", this.peerID)
for (const userClient of this.userClients.values()) {
userClient.disconnect()
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}
this.userClients.clear()
}
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/**
* Write JSON data to the socket.
*
* @param {object} data - The data to write.
* @returns {Promise<void>}
*/
write(data) {
return promisify(cb => this.socket.write(JSON.stringify(data, this.#writeReplacer) + "\n", cb))
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}
/**
* @param {Object} req
* @param {string} req.passcode
* @param {string} req.uuid
* @param {Object} req.form
*/
registerDevice = async (req) => {
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// TODO Look for a deregister API call
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const authClient = await this.#createAuthClient(req.uuid)
return await authClient.registerDevice(req.form, req.passcode, true)
}
/**
* Obtain login tokens. If this fails due to not having a device, also request a device passcode.
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* @param {Object} req
* @param {string} req.uuid
* @param {Object} req.form
* @returns The response of the login attempt, including obtained
* credentials for subsequent token-based login. If a required device passcode
* request failed, its status is stored here.
*/
handleLogin = async (req) => {
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// TODO Look for a logout API call
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const authClient = await this.#createAuthClient(req.uuid)
const loginRes = await authClient.login(req.form, true)
if (loginRes.status === KnownAuthStatusCode.DEVICE_NOT_REGISTERED) {
const passcodeRes = await authClient.requestPasscode(req.form)
if (!passcodeRes.success) {
loginRes.status = passcodeRes.status
}
}
return loginRes
}
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/**
* TODO Consider caching per-user
* @param {string} uuid
*/
async #createAuthClient(uuid) {
return await AuthApiClient.create("KakaoTalk Bridge", uuid)
}
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// TODO Wrapper for per-user commands
/**
* Checked lookup of a UserClient for a given mxid.
* @param {string} mxid
* @returns {UserClient}
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*/
#getUser(mxid) {
const userClient = this.userClients.get(mxid)
if (userClient === undefined) {
throw new Error(`Could not find user ${mxid}`)
}
return userClient
}
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/**
* Unchecked lookup of a UserClient for a given mxid.
* @param {string} mxid
* @returns {UserClient | undefined}
*/
#tryGetUser(mxid) {
return this.userClients.get(mxid)
}
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/**
* @param {string} mxid
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* @param {ChannelProps} channelProps
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*/
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async #getUserChannel(mxid, channelProps) {
return await this.#getUser(mxid).getChannel(channelProps)
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}
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/**
* @param {Object} req
* @param {OAuthCredential} req.oauth_credential
*/
handleRenew = async (req) => {
// TODO Cache per user? Reset API client objects?
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const oAuthClient = await OAuthApiClient.create()
return await oAuthClient.renew(req.oauth_credential)
}
/**
* @param {Object} req
* @param {string} req.mxid
* @param {OAuthCredential} req.oauth_credential
*/
userStart = async (req) => {
const userClient = this.#tryGetUser(req.mxid) || await UserClient.create(req.mxid, req.oauth_credential, this)
const res = await this.#getSettings(userClient.serviceClient)
if (res.success) {
this.userClients.set(req.mxid, userClient)
}
return res
}
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/**
* @param {Object} req
* @param {string} req.mxid
*/
userStop = async (req) => {
this.handleDisconnect(req)
this.userClients.delete(req.mxid)
}
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/**
* @param {Object} req
* @param {string} req.mxid
* @param {OAuthCredential} req.oauth_credential
*/
handleConnect = async (req) => {
return await this.#getUser(req.mxid).connect(req.oauth_credential)
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}
/**
* @param {Object} req
* @param {string} req.mxid
*/
handleDisconnect = (req) => {
this.#tryGetUser(req.mxid)?.disconnect()
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}
/**
* @param {Object} req
* @param {string} req.mxid
*/
getSettings = async (req) => {
return await this.#getSettings(this.#getUser(req.mxid).serviceClient)
}
/**
* @param {ServiceApiClient} serviceClient
*/
#getSettings = async (serviceClient) => {
const moreRes = await serviceClient.requestMoreSettings()
if (!moreRes.success) return moreRes
const lessRes = await serviceClient.requestLessSettings()
if (!lessRes.success) return lessRes
return makeCommandResult({
more: moreRes.result,
less: lessRes.result,
})
}
/**
* @param {Object} req
* @param {string} req.mxid
*/
getOwnProfile = async (req) => {
return await this.#getUser(req.mxid).serviceClient.requestMyProfile()
}
/**
* @param {Object} req
* @param {string} req.mxid
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*/
getOwnProfile = async (req) => {
return await this.#getUser(req.mxid).serviceClient.requestMyProfile()
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}
/**
* @param {Object} req
* @param {string} req.mxid
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* @param {Long} req.user_id
*/
getProfile = async (req) => {
return await this.#getUser(req.mxid).serviceClient.requestProfile(req.user_id)
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}
/**
* @param {Object} req
* @param {string} req.mxid
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* @param {ChannelProps} req.channel_props
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*/
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getPortalChannelInfo = async (req) => {
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const talkChannel = await this.#getUserChannel(req.mxid, req.channel_props)
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const res = await talkChannel.updateAll()
if (!res.success) return res
return makeCommandResult({
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name: talkChannel.getDisplayName(),
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participants: Array.from(talkChannel.getAllUserInfo()),
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// TODO Image
})
}
/**
* @param {Object} req
* @param {string} req.mxid
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* @param {ChannelProps} req.channel_props
*/
getParticipants = async (req) => {
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const talkChannel = await this.#getUserChannel(req.mxid, req.channel_props)
return await talkChannel.getAllLatestUserInfo()
}
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/**
* @param {Object} req
* @param {string} req.mxid
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* @param {ChannelProps} req.channel_props
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* @param {?Long} req.sync_from
* @param {?Number} req.limit
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*/
getChats = async (req) => {
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const talkChannel = await this.#getUserChannel(req.mxid, req.channel_props)
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const res = await talkChannel.getChatListFrom(req.sync_from)
if (res.success && 0 < req.limit && req.limit < res.result.length) {
res.result.splice(0, res.result.length - req.limit)
}
return res
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}
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/**
* @param {Object} req
* @param {string} req.mxid
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*/
listFriends = async (req) => {
return await this.#getUser(req.mxid).serviceClient.requestFriendList()
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}
/**
* @param {Object} req
* @param {string} req.mxid The user whose friend is being looked up.
* @param {string} req.friend_id The friend to search for.
* @param {string} propertyName The property to retrieve from the specified friend.
*/
getFriendProperty = async (req, propertyName) => {
const res = await this.#getUser(req.mxid).serviceClient.findFriendById(req.friend_id)
if (!res.success) return res
return makeCommandResult(res.result.friend[propertyName])
}
/**
* @param {Object} req
* @param {string} req.mxid
*/
getMemoIds = (req) => {
/** @type Long[] */
const channelIds = []
const channelList = this.#getUser(req.mxid).talkClient.channelList
for (const channel of channelList.all()) {
if (channel.info.type == "MemoChat") {
channelIds.push(channel.channelId)
}
}
return channelIds
}
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/**
* @param {Object} req
* @param {string} req.mxid
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* @param {ChannelProps} req.channel_props
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* @param {string} req.text
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* @param {?ReplyAttachment} req.reply_to
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* @param {?MentionStruct[]} req.mentions
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*/
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sendChat = async (req) => {
const talkChannel = await this.#getUserChannel(req.mxid, req.channel_props)
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return await talkChannel.sendChat({
text: req.text,
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type: !!req.reply_to ? KnownChatType.REPLY : KnownChatType.TEXT,
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attachment: !req.mentions ? req.reply_to : {...req.reply_to, mentions: req.mentions},
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})
}
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/**
* @param {Object} req
* @param {string} req.mxid
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* @param {ChannelProps} req.channel_props
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* @param {int} req.type
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* @param {number[]} req.data
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* @param {string} req.name
* @param {?int} req.width
* @param {?int} req.height
* @param {?string} req.ext
*/
sendMedia = async (req) => {
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const talkChannel = await this.#getUserChannel(req.mxid, req.channel_props)
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return await talkChannel.sendMedia(req.type, {
data: Uint8Array.from(req.data),
name: req.name,
width: req.width,
height: req.height,
ext: req.ext,
})
}
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/**
* @param {Object} req
* @param {string} req.mxid
* @param {ChannelProps} req.channel_props
* @param {Long} req.chat_id
*/
deleteChat = async (req) => {
const talkChannel = await this.#getUserChannel(req.mxid, req.channel_props)
return await talkChannel.deleteChat({
logId: req.chat_id,
})
}
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/**
* @param {Object} req
* @param {string} req.mxid
* @param {ChannelProps} req.channel_props
* @param {Long} req.read_until_chat_id
*/
markRead = async (req) => {
const talkChannel = await this.#getUserChannel(req.mxid, req.channel_props)
return await talkChannel.markRead({
logId: req.read_until_chat_id,
})
}
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handleUnknownCommand = () => {
throw new Error("Unknown command")
}
/**
* @param {Object} req
* @param {string} req.peer_id
*/
handleRegister = async (req) => {
this.peerID = req.peer_id
this.log(`Registered socket ${this.connID} -> ${this.peerID}`)
if (this.manager.clients.has(this.peerID)) {
const oldClient = this.manager.clients.get(this.peerID)
this.log(`Terminating previous socket ${oldClient.connID} for ${this.peerID}`)
await oldClient.stop("Socket replaced by new connection")
}
this.manager.clients.set(this.peerID, this)
return { client_exists: this.authClient !== null }
}
async handleLine(line) {
if (this.stopped) {
this.log("Ignoring line, client is stopped")
return
}
let req
try {
req = JSON.parse(line, this.#readReviver)
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} catch (err) {
this.log("Non-JSON request:", line)
return
}
if (!req.command || !req.id) {
this.log("Invalid request:", line)
return
}
if (req.id <= this.maxCommandID) {
this.log("Ignoring old request", req.id)
return
}
this.log("Received request", req.id, "with command", req.command)
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this.maxCommandID = req.id
let handler
if (!this.peerID) {
if (req.command !== "register") {
this.log("First request wasn't a register request, terminating")
await this.stop("Invalid first request")
return
} else if (!req.peer_id) {
this.log("Register request didn't contain ID, terminating")
await this.stop("Invalid register request")
return
}
handler = this.handleRegister
} else {
handler = {
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// TODO Wrapper for per-user commands
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generate_uuid: util.randomAndroidSubDeviceUUID,
register_device: this.registerDevice,
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login: this.handleLogin,
renew: this.handleRenew,
start: this.userStart,
stop: this.userStop,
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connect: this.handleConnect,
disconnect: this.handleDisconnect,
get_settings: this.getSettings,
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get_own_profile: this.getOwnProfile,
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get_profile: this.getProfile,
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get_portal_channel_info: this.getPortalChannelInfo,
get_participants: this.getParticipants,
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get_chats: this.getChats,
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list_friends: this.listFriends,
get_friend_dm_id: req => this.getFriendProperty(req, "directChatId"),
get_memo_ids: this.getMemoIds,
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send_chat: this.sendChat,
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send_media: this.sendMedia,
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delete_chat: this.deleteChat,
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}[req.command] || this.handleUnknownCommand
}
const resp = { id: req.id }
delete req.id
delete req.command
resp.command = "response"
try {
resp.response = await handler(req)
} catch (err) {
if (err.isAxiosError) {
resp.response = {
success: false,
status: err.response.status,
}
} else {
resp.command = "error"
resp.error = err.toString()
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this.log(`Error handling request ${resp.id} ${err.stack}`)
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// TODO Check if session is broken. If it is, close the PeerClient
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}
}
await this.write(resp)
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}
#writeReplacer = function(key, value) {
if (value instanceof Long) {
return value.toString()
} else {
return value
}
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}
#readReviver = function(key, value) {
if (value instanceof Object) {
// TODO Use a type map if there will be many possible types
if (value.__type__ == "Long") {
return Long.fromString(value.str)
}
}
return value
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}
}
/**
* @param {object} result
*/
function makeCommandResult(result) {
return {
success: true,
status: 0,
result: result
}
}
/**
* @param {TalkChannelList} channelList
* @param {ChannelType} channelType
*/
function getChannelListForType(channelList, channelType) {
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return isChannelTypeOpen(channelType) ? channelList.open : channelList.normal
}
/**
* @param {ChannelType} channelType
*/
function isChannelTypeOpen(channelType) {
switch (channelType) {
case "OM":
case "OD":
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return true
default:
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return false
}
}