refactor configuration

src/auth.ts

@@ -2,21 +2,13 @@ import e, { NextFunction, Request, Response } from "express";
 import { sign, verify } from "jsonwebtoken";
 import { query } from "./database";
 import { errors } from "./errors";
-import serverConfig from "./serverconfig";
+import serverConfig, { jwtSecret } from "./serverconfig";
 import { compare } from "bcrypt";
 
-const jwtSecret = process.env.JWT_SECRET || "[generic token]";
-
 const tokenTypes = {
     BEARER: 1
 }
 
-if (jwtSecret === "[generic token]") {
-    console.error("ERROR: No JWT_SECRET environment variable was specified.");
-    console.error("ERROR: exiting...");
-    process.exit(1);
-}
-
 export function getUserPermissions(user: User) {
     return {
         create_channel: serverConfig.superuserRequirement.createChannel ? user.is_superuser : true

src/index.ts

@@ -4,8 +4,8 @@ import { createServer } from "node:http";
 import databaseInit from "./database/init";
 import gateway from "./gateway";
 import server from "./server";
+import { port } from "./serverconfig";
 
-const port = process.env.PORT || 3000;
 
 const app = express();
 server(app);

src/serverconfig.ts

@@ -1,10 +1,54 @@
+import { hashSync } from "bcrypt";
+import { existsSync, mkdirSync, statSync } from "node:fs";
+import path from "node:path";
+
+
 export default {
     superuserRequirement: {
         createChannel: false
     }
 };
 
+export let port = process.env.PORT ?? 3000;
+if (typeof port === "string") {
+    port = parseInt(port);
+}
+if (isNaN(port) || !isFinite(port) || port <= 0) {
+    console.error(`provided PORT in process environment is not valid, exiting... (got '${port}')`);
+    process.exit(1);
+}
+
+export const jwtSecret = process.env.JWT_SECRET ?? "";
+if (!jwtSecret || jwtSecret === "") {
+    console.error("JWT_SECRET not found in process environment, exiting...");
+    process.exit(1);
+}
+
 export const maxBufferByteLength = 8388608; // 8MiB
 export const maxGatewayJsonStringLength = 4500;
 export const maxGatewayJsonStringByteLength = maxGatewayJsonStringLength * 2; // https://developer.mozilla.org/en-US/docs/Web/API/TextEncoder/encodeInto#buffer_sizing
 export const maxGatewayPayloadByteLength = maxBufferByteLength + maxGatewayJsonStringByteLength + 4;
+
+export const superuserKey = process.env.SUPERUSER_KEY ? hashSync(process.env.SUPERUSER_KEY, 10) : null;
+
+export const disableAccountCreation = (process.env.DISABLE_ACCOUNT_CREATION === "true");
+
+export const uploadsMode = 0o600;
+export const uploadsDirectoryMode = 0o700;
+export const avatarUploadDirectory = path.resolve(process.env.AVATAR_UPLOADS_DIR ?? "./uploads/avatar");
+export const attachmentUploadDirectory = path.resolve(process.env.ATTACHMENT_UPLOADS_DIR ?? "./uploads/attachment");
+const ensureDirectory = (dir: string) => {
+    const stats = statSync(dir, { throwIfNoEntry: false });
+    if (!stats) {
+        mkdirSync(dir, { mode: uploadsDirectoryMode });
+        return;
+    }
+    if (!stats.isDirectory()) {
+        throw new Error(`Expected path ${dir} to point to a directory`);
+    }
+};
+const ensureDirectories = () => {
+    ensureDirectory(avatarUploadDirectory);
+    ensureDirectory(attachmentUploadDirectory);
+};
+ensureDirectories();