fix: tsc errors

.gitignore

@@ -1,2 +1,5 @@
 node_modules
 dist
+store
+config.json
+docker-compose.yml

config.example.json

@@ -0,0 +1,10 @@
+{
+    "clients": [
+        {
+            "name": "user",
+            "keySha256Sum": "0000000000000000000000000000000000000000000000000000000000000000",
+            "quota": 512
+        }
+    ],
+    "storePath": "store"
+}

config.json

@@ -1,10 +0,0 @@
-{
-    "clients": [
-        {
-            "name": "izz",
-            "keySha256Sum": "eeb36e726e3ffec16da7798415bb4e531bf8a57fbe276fcc3fc6ea986cb02e9a",
-            "quota": 512
-        }
-    ],
-    "storePath": "store"
-}

docker-compose.example.yml

@@ -0,0 +1,11 @@
+services:
+    server:
+        image: node:18-alpine
+        volumes:
+            - '.:/opt/code'
+        working_dir: '/opt/code'
+        entrypoint: ['/opt/code/docker-start.sh']
+        ports:
+            - 8080:80
+        environment:
+            HOST: 0.0.0.0

docker-start.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+yarn
+yarn start

src/client.ts

@@ -0,0 +1,23 @@
+import * as crypto from 'node:crypto';
+
+export type Client = {
+    name: string;
+    keySha256Sum: string;
+    /**
+     * In megabytes
+     */
+    quota?: number;
+};
+
+export type NoKeyClient = {
+    name: string;
+    quota?: number;
+};
+
+export function checkKey(key: string, client: Client): boolean {
+    const sha = crypto.createHash('sha256');
+    sha.update(key);
+    const hashed = sha.digest().toString('hex');
+
+    return client.keySha256Sum === hashed;
+}

src/config.ts

@@ -1,5 +1,9 @@
-import fsp from 'node:fs/promises';
+import { Client, checkKey } from './client.js';
+
+import * as fsp from 'node:fs/promises';
 import Ajv from 'ajv';
+import { existsSync } from 'node:fs';
+// @ts-expect-error: esnext moment
 const ajv = new Ajv();
 
 const config_validate = ajv.compile({
@@ -23,18 +27,16 @@ const config_validate = ajv.compile({
 });
 
 export class Config {
-    clients: {
-        name: string;
-        keySha256Sum: string;
-        /**
-         * In megabytes
-         */
-        quota?: number;
-    }[];
+    clients: Client[];
     storePath: string;
 
     static async load(): Promise<Config> {
         const path = process.env.CONFIG_PATH ?? 'config.json';
+
+        if (!existsSync(path)) {
+            throw new Error(`The config file ${path} does not exist`);
+        }
+
         const raw = JSON.parse(
             await fsp.readFile(path, { encoding: 'utf8' }),
         ) as Config;
@@ -56,6 +58,10 @@ export class Config {
 
         return raw;
     }
+
+    static getClientByKey(config: Config, key: string): Client | undefined {
+        return config.clients.find((client) => checkKey(key, client));
+    }
 }
 
 export const config = await Config.load();

src/errors.ts

@@ -26,3 +26,21 @@ export const InvalidAuthorization = () =>
         name: 'InvalidAuthorization',
         message: 'Provided authorization credentials are invalid',
     }) as FastifyError;
+
+export const QuotaExceeded = () =>
+    ({
+        code: '422',
+        statusCode: 422,
+        name: 'QuotaExceeded',
+        message:
+            'Your quota has exceeded. Please delete some files to proceed.',
+    }) as FastifyError;
+
+export const NotFoundError = () =>
+    ({
+        code: '404',
+        statusCode: 404,
+        name: 'NotFound',
+        message:
+            'The requested resource has never existed, deleted or has a different name or path.',
+    }) as FastifyError;

src/routes/delete.ts

@@ -0,0 +1,28 @@
+import { type FastifyPluginAsync } from 'fastify';
+import * as fsp from 'node:fs/promises';
+
+import { Config, config } from '../config.js';
+import { InvalidAuthorization } from '../errors.js';
+import { getFilesFor, getPathFor } from '../store.js';
+
+export default (async function (fastify) {
+    fastify.delete('/:name', async (req) => {
+        const key = req.headers.authorization?.replace('Bearer ', '') ?? 'none';
+
+        const client = Config.getClientByKey(config, key);
+        if (!client) {
+            throw InvalidAuthorization();
+        }
+
+        const params = req.params as { name: string };
+        const files = await getFilesFor(client.name);
+
+        if (!files.find((x) => x === client.name + '-' + params.name)) {
+            return { status: 'ok' };
+        }
+
+        await fsp.rm(getPathFor(params.name, client.name));
+
+        return { status: 'ok' };
+    });
+} as FastifyPluginAsync);

src/routes/get.ts

@@ -0,0 +1,30 @@
+import { FastifyPluginAsync } from 'fastify';
+import * as fsp from 'node:fs/promises';
+
+import { Config, config } from '../config.js';
+import { InvalidAuthorization, NotFoundError } from '../errors.js';
+import { getFilesFor, getPathFor } from '../store.js';
+
+export default (async function (fastify) {
+    fastify.get('/get/:name', async (req, rep) => {
+        const key = req.headers.authorization?.replace('Bearer ', '') ?? 'none';
+
+        const client = Config.getClientByKey(config, key);
+        if (!client) {
+            throw InvalidAuthorization();
+        }
+
+        const files = (await getFilesFor(client.name)).map((x) =>
+            x.replace(client.name + '-', ''),
+        );
+
+        const params = req.params as { name: string };
+
+        if (!files.find((x) => x === params.name)) {
+            throw NotFoundError();
+        }
+
+        rep.type('application/octet-stream');
+        return await fsp.readFile(getPathFor(params.name, client.name));
+    });
+} as FastifyPluginAsync);

src/routes/index.ts

@@ -1,6 +1,14 @@
 import { FastifyPluginAsync } from 'fastify';
+import deleter from './delete.js';
 import upload from './upload.js';
+import index from './indexpage.js';
+import list from './list.js';
+import get from './get.js';
 
 export default (async function (fastify) {
+    await fastify.register(deleter);
     await fastify.register(upload);
+    await fastify.register(index);
+    await fastify.register(list);
+    await fastify.register(get);
 } as FastifyPluginAsync);

src/routes/indexpage.ts

@@ -0,0 +1,29 @@
+import { FastifyPluginAsync } from 'fastify';
+
+const page = `<!DOCTYPE html>
+<html>
+    <head>
+        <title>Backup server</title>
+        <style>*{background:#111;color:white}a{color:#abf}</style>
+    </head>
+    <body>
+        <h1>You have reached the backup server!</h1>
+        <p>This is the backup server! If you are a regular user, you wouldn't find this place very interesting and might as well close this page now.</p>
+        <p>If you are a sysadmin, please refer to <a href='https://git.blek.codes/blek/backups.git'>API docs</a> for more info</p>
+    </body>
+</html>
+`
+    .replaceAll('\n', '')
+    .replaceAll(/ +/gm, ' ')
+    .replaceAll(' <', '<');
+
+export default (async function (fastify) {
+    fastify.get('/', async (_req, rep) => {
+        rep.type('text/html; charset=utf8');
+        return page;
+    });
+    fastify.get('/favicon.ico', async (req, rep) => {
+        rep.status(404);
+        return '';
+    });
+} as FastifyPluginAsync);

src/routes/list.ts

@@ -0,0 +1,41 @@
+import { type FastifyPluginAsync } from 'fastify';
+import * as fsp from 'node:fs/promises';
+import * as path from 'node:path';
+import { Stats } from 'node:fs';
+
+import { Config, config } from '../config.js';
+import { InvalidAuthorization } from '../errors.js';
+
+type ListFilesResponse = {
+    name: string;
+    created: Date;
+};
+
+export default (async function (fastify) {
+    fastify.get('/list', async (req) => {
+        const key = req.headers.authorization?.replace('Bearer ', '') ?? 'none';
+
+        const client = Config.getClientByKey(config, key);
+        if (!client) {
+            throw InvalidAuthorization();
+        }
+
+        const rawfl = await fsp.readdir(config.storePath);
+        const files: [Stats, string][] = await Promise.all(
+            rawfl
+                .filter((x) => x.startsWith(client.name + '-'))
+                .map(async (x) => [
+                    await fsp.stat(path.join(config.storePath, x)),
+                    x,
+                ]),
+        );
+
+        return files.map(
+            (x) =>
+                ({
+                    name: x[1].replace(client.name + '-', ''),
+                    created: x[0].birthtime,
+                }) as ListFilesResponse,
+        );
+    });
+} as FastifyPluginAsync);

src/routes/upload.ts

@@ -1,19 +1,20 @@
 import { FastifyPluginAsync } from 'fastify';
 import Ajv, { JSONSchemaType, type Schema } from 'ajv';
-import crypto from 'node:crypto';
 
 import {
     InvalidAuthorization,
     InvalidPayload,
+    QuotaExceeded,
     ValidationError,
 } from '../errors.js';
-import { config } from '../config.js';
-import { getTakenQuota, save } from '../store.js';
+import { Config, config } from '../config.js';
+import { save } from '../store.js';
 
 type UploadPayload = {
     data: string; // base64-encoded
     name: string;
 };
+// @ts-expect-error: esnext moment
 const ajv = new Ajv();
 const upload_schema = {
     type: 'object',
@@ -26,11 +27,9 @@ const upload_schema = {
 
 export default (async function (fastify) {
     fastify.post('/upload', async (req) => {
-        const sha = crypto.createHash('sha256');
-        sha.update(req.headers.authorization?.replace('Bearer ', '') ?? 'none');
-        const key = sha.digest().toString('hex');
+        const key = req.headers.authorization?.replace('Bearer ', '') ?? 'none';
 
-        const client = config.clients.find((x) => x.keySha256Sum === key);
+        const client = Config.getClientByKey(config, key);
 
         if (!client) {
             throw InvalidAuthorization();
@@ -54,7 +53,10 @@ export default (async function (fastify) {
         const data = Buffer.from(body.data, 'base64');
         const name = body.name;
 
-        await save(data, name, client.name);
+        const status = await save(data, name, client.name);
+        if (status === 'Quota exceeded') {
+            throw QuotaExceeded();
+        }
 
         return {
             status: 'ok',

src/store.ts

@@ -1,11 +1,10 @@
 import { config } from './config.js';
 
-import path from 'path';
-import fsp from 'node:fs/promises';
+import * as path from 'path';
+import * as fsp from 'node:fs/promises';
+import { NoKeyClient } from './client.js';
 
-function getClient(
-    clientName: string,
-): { name: string; quota: number } | undefined {
+function getClient(clientName: string): NoKeyClient | undefined {
     const client = config.clients.find((x) => x.name === clientName) as
         | { name: string; quota: number; keySha256Sum?: string }
         | undefined;
@@ -14,13 +13,9 @@ function getClient(
     return client;
 }
 
-function getClientOrThrowErr(
-    clientName: string,
-    error?: string,
-): { name: string; quota: number } {
+function getClientOrThrowErr(clientName: string, error?: string): NoKeyClient {
     const client = getClient(clientName);
-    if (typeof client === 'undefined')
-        throw Error(error ?? 'Client does not exist.');
+    if (!client) throw Error(error ?? 'Client does not exist.');
     return client;
 }
 
@@ -56,6 +51,7 @@ export async function save(
     const client = getClientOrThrowErr(clientName);
     const quota = await getTakenQuota(clientName);
 
+    if (client.quota)
         if (data.length + quota > client.quota) {
             return 'Quota exceeded';
         }

store/izz-testy

@@ -1 +0,0 @@
-uwu

tsconfig.json

@@ -0,0 +1,7 @@
+{
+    "compilerOptions": {
+        "lib": ["ES2023"],
+        "module": "NodeNext",
+        "moduleResolution": "NodeNext"
+    }
+}