supernets/hardlounge
supernets/hardlounge
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Prevent crashing on rDNS failure

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This commit is contained in:
hgw 2023-12-03 02:21:56 +00:00
parent 42e08dec93
commit 59cc53014d
Signed by: hgw
SSH Key Fingerprint: SHA256:diG7RVYHjd3aDYkZWHYcBJbImu+6zfptuUP+3k/wol4
1 changed files with 176 additions and 79 deletions
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255
server/server.ts
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@ -1,9 +1,9 @@
import _ from "lodash";
import {Server as wsServer} from "ws";
import express, {NextFunction, Request, Response} from "express";
import { Server as wsServer } from "ws";
import express, { NextFunction, Request, Response } from "express";
import fs from "fs";
import path from "path";
import {Server, Socket} from "socket.io";
import { Server, Socket } from "socket.io";
import dns from "dns";
import colors from "chalk";
import net from "net";
@ -13,18 +13,18 @@ import Client from "./client";
import ClientManager from "./clientManager";
import Uploader from "./plugins/uploader";
import Helper from "./helper";
import Config, {ConfigType, Defaults} from "./config";
import Config, { ConfigType, Defaults } from "./config";
import Identification from "./identification";
import changelog from "./plugins/changelog";
import inputs from "./plugins/inputs";
import Auth from "./plugins/auth";
import themes, {ThemeForClient} from "./plugins/packages/themes";
import themes, { ThemeForClient } from "./plugins/packages/themes";
themes.loadLocalThemes();
import packages from "./plugins/packages/index";
import {NetworkWithIrcFramework} from "./models/network";
import {ChanType} from "./models/chan";
import { NetworkWithIrcFramework } from "./models/network";
import { ChanType } from "./models/chan";
import Utils from "./command-line/utils";
import type {
ClientToServerEvents,
@ -72,9 +72,9 @@ export default async function (
}
) {
log.info(`Hard Lounge ${colors.green(Helper.getVersion())} \
(Node.js ${colors.green(process.versions.node)} on ${colors.green(process.platform)} ${
process.arch
})`);
(Node.js ${colors.green(process.versions.node)} on ${colors.green(
process.platform
)} ${process.arch})`);
log.info(`Configuration file: ${colors.green(Config.getConfigPath())}`);
const staticOptions = {
@ -96,8 +96,16 @@ export default async function (
.get("/service-worker.js", forceNoCacheRequest)
.get("/js/bundle.js.map", forceNoCacheRequest)
.get("/css/style.css.map", forceNoCacheRequest)
.use(express.static(Utils.getFileFromRelativeToRoot("public"), staticOptions))
.use("/storage/", express.static(Config.getStoragePath(), staticOptions));
.use(
express.static(
Utils.getFileFromRelativeToRoot("public"),
staticOptions
)
)
.use(
"/storage/",
express.static(Config.getStoragePath(), staticOptions)
);
if (Config.values.fileUpload.enable) {
Uploader.router(app);
@ -123,7 +131,10 @@ export default async function (
const fileName = req.params.filename;
const packageFile = packages.getPackage(packageName);
if (!packageFile || !packages.getFiles().includes(`${packageName}/${fileName}`)) {
if (
!packageFile ||
!packages.getFiles().includes(`${packageName}/${fileName}`)
) {
return res.status(404).send("Not found");
}
@ -180,7 +191,10 @@ export default async function (
host: string | undefined;
};
if (typeof Config.values.host === "string" && Config.values.host.startsWith("unix:")) {
if (
typeof Config.values.host === "string" &&
Config.values.host.startsWith("unix:")
) {
listenParams = Config.values.host.replace(/^unix:/, "");
} else {
listenParams = {
@ -208,8 +222,12 @@ export default async function (
log.info(
"Available at " +
colors.green(`${protocol}://${address.address}:${address.port}/`) +
` in ${colors.bold(Config.values.public ? "public" : "private")} mode`
colors.green(
`${protocol}://${address.address}:${address.port}/`
) +
` in ${colors.bold(
Config.values.public ? "public" : "private"
)} mode`
);
}
}
@ -267,7 +285,9 @@ export default async function (
log.error(`Could not start identd server, ${err.message}`);
process.exit(1);
} else if (!manager) {
log.error("Could not start identd server, ClientManager is undefined");
log.error(
"Could not start identd server, ClientManager is undefined"
);
process.exit(1);
}
@ -290,7 +310,9 @@ export default async function (
}
if (Config.values.prefetchStorage) {
log.info("Clearing prefetch storage folder, this might take a while...");
log.info(
"Clearing prefetch storage folder, this might take a while..."
);
(await import("./plugins/storage")).default.emptyDir();
}
@ -316,7 +338,7 @@ export default async function (
// Clear storage folder after server starts successfully
if (Config.values.prefetchStorage) {
import("./plugins/storage")
.then(({default: storage}) => {
.then(({ default: storage }) => {
storage.emptyDir();
})
.catch((err: Error) => {
@ -333,7 +355,10 @@ export default async function (
function getClientLanguage(socket: Socket): string | null {
const acceptLanguage = socket.handshake.headers["accept-language"];
if (typeof acceptLanguage === "string" && /^[\x00-\x7F]{1,50}$/.test(acceptLanguage)) {
if (
typeof acceptLanguage === "string" &&
/^[\x00-\x7F]{1,50}$/.test(acceptLanguage)
) {
// only allow ASCII strings between 1-50 characters in length
return acceptLanguage;
}
@ -360,7 +385,10 @@ function getClientIp(socket: Socket) {
function getClientSecure(socket: Socket) {
let secure = socket.handshake.secure;
if (Config.values.reverseProxy && socket.handshake.headers["x-forwarded-proto"] === "https") {
if (
Config.values.reverseProxy &&
socket.handshake.headers["x-forwarded-proto"] === "https"
) {
secure = true;
}
@ -390,7 +418,9 @@ function addSecurityHeaders(req: Request, res: Response, next: NextFunction) {
// - https://user-images.githubusercontent.com is where we currently push our changelog screenshots
// - data: is required for the HTML5 video player
if (Config.values.prefetchStorage || !Config.values.prefetch) {
policies.push("img-src 'self' data: https://user-images.githubusercontent.com");
policies.push(
"img-src 'self' data: https://user-images.githubusercontent.com"
);
policies.unshift("block-all-mixed-content");
} else {
policies.push("img-src http: https: data:");
@ -422,7 +452,7 @@ function indexRequest(req: Request, res: Response) {
const config: IndexTemplateConfiguration = {
...getServerConfiguration(),
...{cacheBust: Helper.getVersionCacheBust()},
...{ cacheBust: Helper.getVersionCacheBust() },
};
res.send(_.template(file)(config));
@ -449,7 +479,9 @@ function initializeClient(
// If client provided channel passes checks, use it. if client has invalid
// channel open (or windows like settings) then use last known server active channel
openChannel = client.attachedClients[socket.id].openChannel || client.lastActiveChannel;
openChannel =
client.attachedClients[socket.id].openChannel ||
client.lastActiveChannel;
} else {
openChannel = client.lastActiveChannel;
}
@ -494,7 +526,7 @@ function initializeClient(
return;
}
const network = _.find(client.networks, {uuid: data});
const network = _.find(client.networks, { uuid: data });
if (!network) {
return;
@ -508,7 +540,7 @@ function initializeClient(
return;
}
const network = _.find(client.networks, {uuid: data.uuid});
const network = _.find(client.networks, { uuid: data.uuid });
if (!network) {
return;
@ -552,7 +584,10 @@ function initializeClient(
const hash = Helper.password.hash(p1);
client.setPassword(hash, (success: boolean) => {
const obj = {success: false, error: undefined} as {
const obj = {
success: false,
error: undefined,
} as {
success: boolean;
error: string | undefined;
};
@ -567,7 +602,9 @@ function initializeClient(
});
})
.catch((error: Error) => {
log.error(`Error while checking users password. Error: ${error.message}`);
log.error(
`Error while checking users password. Error: ${error.message}`
);
});
}
});
@ -596,7 +633,9 @@ function initializeClient(
socket.emit("changelog", changelogData);
})
.catch((error: Error) => {
log.error(`Error while fetching changelog. Error: ${error.message}`);
log.error(
`Error while fetching changelog. Error: ${error.message}`
);
});
});
@ -665,7 +704,12 @@ function initializeClient(
if (!Config.values.public) {
socket.on("push:register", (subscription) => {
if (!Object.prototype.hasOwnProperty.call(client.config.sessions, token)) {
if (
!Object.prototype.hasOwnProperty.call(
client.config.sessions,
token
)
) {
return;
}
@ -684,26 +728,32 @@ function initializeClient(
}
});
socket.on("push:unregister", () => client.unregisterPushSubscription(token));
socket.on("push:unregister", () =>
client.unregisterPushSubscription(token)
);
}
const sendSessionList = () => {
// TODO: this should use the ClientSession type currently in client
const sessions = _.map(client.config.sessions, (session, sessionToken) => {
return {
current: sessionToken === token,
active: _.reduce(
client.attachedClients,
(count, attachedClient) =>
count + (attachedClient.token === sessionToken ? 1 : 0),
0
),
lastUse: session.lastUse,
ip: session.ip,
agent: session.agent,
token: sessionToken, // TODO: Ideally don't expose actual tokens to the client
};
});
const sessions = _.map(
client.config.sessions,
(session, sessionToken) => {
return {
current: sessionToken === token,
active: _.reduce(
client.attachedClients,
(count, attachedClient) =>
count +
(attachedClient.token === sessionToken ? 1 : 0),
0
),
lastUse: session.lastUse,
ip: session.ip,
agent: session.agent,
token: sessionToken, // TODO: Ideally don't expose actual tokens to the client
};
}
);
socket.emit("sessions:list", sessions);
};
@ -725,8 +775,12 @@ function initializeClient(
}
// We do not need to do write operations and emit events if nothing changed.
if (client.config.clientSettings[newSetting.name] !== newSetting.value) {
client.config.clientSettings[newSetting.name] = newSetting.value;
if (
client.config.clientSettings[newSetting.name] !==
newSetting.value
) {
client.config.clientSettings[newSetting.name] =
newSetting.value;
// Pass the setting to all clients.
client.emit("setting:new", {
@ -736,7 +790,10 @@ function initializeClient(
client.save();
if (newSetting.name === "highlights" || newSetting.name === "highlightExceptions") {
if (
newSetting.name === "highlights" ||
newSetting.name === "highlightExceptions"
) {
client.compileCustomHighlights();
} else if (newSetting.name === "awayMessage") {
if (typeof newSetting.value !== "string") {
@ -749,7 +806,12 @@ function initializeClient(
});
socket.on("setting:get", () => {
if (!Object.prototype.hasOwnProperty.call(client.config, "clientSettings")) {
if (
!Object.prototype.hasOwnProperty.call(
client.config,
"clientSettings"
)
) {
socket.emit("setting:all", {});
return;
}
@ -763,14 +825,14 @@ function initializeClient(
socket.emit("search:results", results);
});
socket.on("mute:change", ({target, setMutedTo}) => {
socket.on("mute:change", ({ target, setMutedTo }) => {
const networkAndChan = client.find(target);
if (!networkAndChan) {
return;
}
const {chan, network} = networkAndChan;
const { chan, network } = networkAndChan;
// If the user mutes the lobby, we mute the entire network.
if (chan.type === ChanType.LOBBY) {
@ -802,7 +864,12 @@ function initializeClient(
tokenToSignOut = token;
}
if (!Object.prototype.hasOwnProperty.call(client.config.sessions, tokenToSignOut)) {
if (
!Object.prototype.hasOwnProperty.call(
client.config.sessions,
tokenToSignOut
)
) {
return;
}
@ -815,7 +882,9 @@ function initializeClient(
return;
}
const socketToRemove = manager!.sockets.of("/").sockets.get(socketId);
const socketToRemove = manager!.sockets
.of("/")
.sockets.get(socketId);
socketToRemove!.emit("sign-out");
socketToRemove!.disconnect();
@ -901,7 +970,7 @@ function getClientConfiguration(): ClientConfiguration {
}
function getServerConfiguration(): ServerConfiguration {
return {...Config.values, ...{stylesheets: packages.getStylesheets()}};
return { ...Config.values, ...{ stylesheets: packages.getStylesheets() } };
}
function performAuthentication(this: Socket, data) {
@ -914,7 +983,13 @@ function performAuthentication(this: Socket, data) {
let token: string;
const finalInit = () =>
initializeClient(socket, client, token, data.lastMessage || -1, data.openChannel);
initializeClient(
socket,
client,
token,
data.lastMessage || -1,
data.openChannel
);
const initClient = () => {
// Configuration does not change during runtime of TL,
@ -924,7 +999,9 @@ function performAuthentication(this: Socket, data) {
socket.emit(
"push:issubscribed",
token && client.config.sessions[token].pushSubscription ? true : false
token && client.config.sessions[token].pushSubscription
? true
: false
);
}
@ -976,9 +1053,9 @@ function performAuthentication(this: Socket, data) {
);
} else {
log.warn(
`Authentication failed for user ${colors.bold(data.user)} from ${colors.bold(
getClientIp(socket)
)}`
`Authentication failed for user ${colors.bold(
data.user
)} from ${colors.bold(getClientIp(socket))}`
);
}
@ -1001,7 +1078,12 @@ function performAuthentication(this: Socket, data) {
if (client && data.token) {
const providedToken = client.calculateTokenHash(data.token);
if (Object.prototype.hasOwnProperty.call(client.config.sessions, providedToken)) {
if (
Object.prototype.hasOwnProperty.call(
client.config.sessions,
providedToken
)
) {
token = providedToken;
return authCallback(true);
@ -1015,28 +1097,43 @@ function performAuthentication(this: Socket, data) {
}
function reverseDnsLookup(ip: string, callback: (hostname: string) => void) {
dns.reverse(ip, (reverseErr, hostnames) => {
if (reverseErr || hostnames.length < 1) {
return callback(ip);
}
dns.resolve(hostnames[0], net.isIP(ip) === 6 ? "AAAA" : "A", (resolveErr, resolvedIps) => {
// TODO: investigate SoaRecord class
if (!Array.isArray(resolvedIps)) {
// node can throw, even if we provide valid input based on the DNS server
// returning SERVFAIL it seems: https://github.com/thelounge/thelounge/issues/4768
// so we manually resolve with the ip as a fallback in case something fails
try {
dns.reverse(ip, (reverseErr, hostnames) => {
if (reverseErr || hostnames.length < 1) {
return callback(ip);
}
if (resolveErr || resolvedIps.length < 1) {
return callback(ip);
}
dns.resolve(
hostnames[0],
net.isIP(ip) === 6 ? "AAAA" : "A",
(resolveErr, resolvedIps) => {
// TODO: investigate SoaRecord class
if (!Array.isArray(resolvedIps)) {
return callback(ip);
}
for (const resolvedIp of resolvedIps) {
if (ip === resolvedIp) {
return callback(hostnames[0]);
if (resolveErr || resolvedIps.length < 1) {
return callback(ip);
}
for (const resolvedIp of resolvedIps) {
if (ip === resolvedIp) {
return callback(hostnames[0]);
}
}
return callback(ip);
}
}
return callback(ip);
);
});
});
} catch (err) {
log.error(
`failed to resolve rDNS for ${ip}, using ip instead`,
(err as any).toString()
);
setImmediate(callback, ip); // makes sure we always behave asynchronously
}
}