commit 93e89b0d7fbf371c45f43bcf13c382aaa073bc3a Author: Fasterino Date: Fri Nov 15 02:24:51 2024 +0300 Init diff --git a/.dockerignore b/.dockerignore new file mode 100644 index 0000000..6888e61 --- /dev/null +++ b/.dockerignore @@ -0,0 +1,3 @@ +vol +node_modules +dist \ No newline at end of file diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..6888e61 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +vol +node_modules +dist \ No newline at end of file diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..f259564 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,10 @@ +FROM node:21-alpine +RUN mkdir /app +WORKDIR /app +COPY . . +RUN mkdir dist +RUN npm install + +VOLUME /app/vol + +CMD npm run start \ No newline at end of file diff --git a/docker-compose.yml b/docker-compose.yml new file mode 100644 index 0000000..ed7ffed --- /dev/null +++ b/docker-compose.yml @@ -0,0 +1,23 @@ +version: '3.8' +services: + main: + build: . + restart: always + environment: + HTTP_PORT: 52080 + HTTPS_PORT: 52443 # comment this if https is not required + # VOLUME_PATH: '/app/vol' # Not required because its '/app/vol' by default + CERTS_PATH: /etc/letsencrypt/live/ # Will be ignored because LOAD_CERTS_FROM_VOLUME is 1 + LOAD_CERTS_FROM_VOLUME: 1 # CERTS_PATH will be inherited from VOLUME_PATH + networks: + - your_network # choose network with your containers + volumes: + - ../volumes/proxy:/app/vol + ports: + - 52080:52080 + - 52443:52443 + +networks: + # choose network with your containers + your_network: + external: true diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..d7762b0 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,877 @@ +{ + "name": "proxy", + "version": "1.0.0", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "proxy", + "version": "1.0.0", + "license": "ISC", + "dependencies": { + "@types/http-proxy": "^1.17.13", + "cors": "^2.8.5", + "express": "^4.18.2", + 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Nullable = T | null + +type DomainCertName = string + +export const CERT_NAME = 'cert-name' + + +export class Config implements IConfig { + volumePath: string + domains: Dict + + constructor(cfg: IConfig, volumePath: string) { + this.volumePath = volumePath + + for (const key of Object.keys(cfg)) + this[key] = cfg[key] + } + + static getDefault(): IConfig { + return { + domains: { + "test.com": { + [CERT_NAME]: "test.com", + "/": { + domain: "web-docker-container", + port: 8080 + }, + "/api/": { + domain: "api-docker-container", + port: 8081, + cors: ["test.com"], + relative: true + }, + }, + "mirror.test.com": { + [CERT_NAME]: "test.com", + "/": { + domain: "test.cc", + https: true, + cors: '*', + rewriteDomain: true + } + }, + "static.test.com": { + [CERT_NAME]: "test.com", + "/": { + folder: "volFolder", + cors: '*' + }, + "/extra/": { + folder: "extraVolFolder", + cors: ['test.com', 'test.cc'], + relative: true + } + } + } + } + } + + static async save(cfg: IConfig, volumePath: string) { + await writeFile(Config.configPath(volumePath), JSON.stringify(cfg, undefined, 2)) + return cfg + } + + static async load(volumePath: string) { + return new Config( + await readFile(Config.configPath(volumePath), 'utf8') + .then( + res => JSON.parse(res) as IConfig, + async err => await Config.save(Config.getDefault(), volumePath) + ), + volumePath + ) + } + + static isStatic(atPath: ConfigAtPathRaw): atPath is ConfigAtPathStatic { + return "folder" in atPath + } + + private static configPath(volumePath: string) { return join(resolve(volumePath), 'config.json') } + private static fixPath(path: string) { return (path.startsWith('/') ? '' : '/') + path + (!path.length || path.endsWith('/') ? '' : '/') } + private static splitPath(path: string) { + const fixedPath = Config.fixPath(path) + return fixedPath.length < 2 ? [] : fixedPath.substring(1, fixedPath.length - 1).split('/') + } + + repr(): IConfig { + return { + domains: this.domains, + } + } + + getCerts(): Dict> { + return Object.fromEntries( + Object.entries(this.domains) + .map(([key, val]) => + [ + key, + typeof val[CERT_NAME] == 'string' ? val[CERT_NAME] : null + ]) + ) + } + + getProxyData(domain: string, path: string): Nullable { + const atDomain = this.domains[domain] + if (!atDomain) + return null + + const [atPath, exclude] = this.getConfigFromDomain(atDomain, path) + if (!atPath) + return null + if (Config.isStatic(atPath)) + return { + exclude, + folder: atPath.folder, + cors: atPath.cors || [domain], + relative: atPath.relative + } + return { + exclude, + domain: atPath.domain, + port: atPath.port || 0, + headers: atPath.headers || {}, + https: atPath.https, + cors: atPath.cors || [domain], + rewriteDomain: atPath.rewriteDomain, + relative: atPath.relative + } + } + + private getConfigFromDomain(atDomain: ConfigAtDomain, _path: string): [Nullable, number] { + const path = Config.splitPath(_path) + + const atPaths = this.getPaths(atDomain) + + for (const [key, atPath] of atPaths) + if (this.comparePaths(path, key)) + return [atPath, atPath.relative ? Config.fixPath(key.join('/')).length : 1] + + return [null, 0] + } + + private comparePaths(reqPath: string[], cfgPath: string[]) { + if (reqPath.length < cfgPath.length) + return false + + for (let i = 0; i < cfgPath.length; i++) + if (reqPath[i] != cfgPath[i]) + return false + + return true + } + + private getPaths(atDomain: ConfigAtDomain) { + return Object.entries(atDomain) + .filter(([key, val]) => + (key != CERT_NAME) && (typeof val != 'string')) + .map(([key, val]) => + [Config.splitPath(key), val] as [string[], ConfigAtPathRaw]) + .sort(([a], [b]) => + b.length - a.length) + } + + async save() { + await Config.save(this.repr(), this.volumePath) + } +} + +export type ConfigAtPath = Required & ConfigAtPathCommon + +export type ConfigAtPathRaw = ConfigAtPathDynamic | ConfigAtPathStatic + +export interface ConfigAtPathCommon { + /** + * Auto calculated field + */ + exclude: number +} + +export interface ConfigAtPathStatic { + /** + * Will redirect request to local file from this **folder** + * + * **Note:** this folder must be in volume folder + */ + folder: string + + /** + * Allowed origins + * + * Use **"*"** to disable cors + * + * **Default:** [req.hostname] + */ + cors?: Cors + + /** + * Remove path from request path + * + * **Example:** ({"test.com": "/api/": {"folder": "volFolder"}}) + * * *true* - Get **http://test.com/api/test** => Get **./volume/volFolder/test** + * * *false* - Get **http://test.com/api/test** => Get **./volume/volFolder/volFolder/test** + * + * **Default:** false + */ + relative?: boolean +} + +export interface ConfigAtPathDynamic { + /** + * Will redirect request to http server with this **domain** or **ip** + */ + domain: string + + /** + * Will redirect request to http server with this **port** + * + * **Default:** + * * *for http* - 80 + * * *for https* - 443 + */ + port?: number + + + /** + * Will redirect request to http server with this **headers** + * + * **Default:** {} + */ + headers?: { [key: string]: string } + + /** + * Use https protocol instead of http when redirecting + * + * **Default:** false + */ + https?: boolean + + /** + * Allowed origins + * + * Use **"*"** to disable cors + * + * **Default:** [req.hostname] + */ + cors?: Cors + + + /** + * Use domain (or ip) of http server instead of requested domain + * + * **Example:** + * * *true* - Get **req.hostname** => Get **config.domain** with header Host=**config.domain** + * * *false* - Get **req.hostname** => Get **config.domain** with header Host=**req.hostname** + * + * **Default:** false + */ + rewriteDomain?: boolean + + /** + * Remove path from request path + * + * **Example:** ({"test.com": "/api/": {"domain": "localhost"}}) + * * *true* - Get **http://test.com/api/test** => Get **http:/localhost/test** + * * *false* - Get **http://test.com/api/test** => Get **http:/localhost/api/test** + * + * **Default:** false + */ + relative?: boolean +} + +export interface ConfigAtDomain extends Dict { } + +export interface IConfig { + domains: Dict +} \ No newline at end of file diff --git a/src/config_old.ts b/src/config_old.ts new file mode 100644 index 0000000..f341f85 --- /dev/null +++ b/src/config_old.ts @@ -0,0 +1,41 @@ +import fs from 'fs'; + +export interface Config { + default?: ConfigProxyPaths + hosts: { + [domain: string]: ConfigProxyPaths + }, + certs: ConfigCerts +} +export interface ConfigCerts { + [folder: string]: { + domain: string + allowSubdomains: boolean + } +} +export interface ConfigProxyPaths { + [path: string]: ConfigProxy | ConfigProxyStatic +} + +type Cors = string[] | '*' + +export interface ConfigProxy { + domain: string + port?: number + headers?: { [key: string]: string } + https?: boolean + cors?: Cors + useNativeDomain?: boolean + relative?: boolean +} + +export interface ConfigProxyStatic { + static: string + cors?: Cors +} + +export default function getConfig(path: string): Config { + return JSON.parse( + fs.readFileSync(path, 'utf8') + ) +} \ No newline at end of file diff --git a/src/env.ts b/src/env.ts new file mode 100644 index 0000000..d104812 --- /dev/null +++ b/src/env.ts @@ -0,0 +1,28 @@ +import 'process' + +interface EnvFunc { + (def: number): number + (def: string): string +} + +type EnvFuncGeneric = (def: string | number) => string | number + +interface Env { + readonly [key: string]: EnvFunc +} + +export const env: Env = new Proxy({}, { + get(_, prop: string, cast): EnvFuncGeneric { + return def => { + const val: string = process.env[prop] + if (!val) return def + + switch (typeof def) { + case 'number': + return Number.isNaN(val) ? def : Number(val) + default: + return val + } + } + } +}); \ No newline at end of file diff --git a/src/https.ts b/src/https.ts new file mode 100644 index 0000000..6ece6f5 --- /dev/null +++ b/src/https.ts @@ -0,0 +1,40 @@ +import { RequestListener } from "http"; +import https from "https"; +import tls from "tls"; +import fs from "fs"; +import { Config } from "./config"; +import { join } from "path"; + + +export function getHttps(cfg: Config, letsencryptPath: string) { + const secureContexts = getSecureContexts(cfg, letsencryptPath) + + const options: https.ServerOptions = { + // A function that will be called if the client supports SNI TLS extension. + SNICallback: (domain, cb) => { + + const ctx = secureContexts[domain]; + + if (cb) { + ctx ? cb(null, ctx) : cb(Error("No ctx")); + } else if (ctx) { + return ctx; + } + }, + }; + + return (app: RequestListener) => https.createServer(options, app); +} + +function getSecureContexts(config: Config, letsencryptPath: string) { + return Object.fromEntries( + Object.entries(config.getCerts()) + .filter(([_, value]) => value) + .map(([key, value]) => + [key, tls.createSecureContext({ + key: fs.readFileSync(join(letsencryptPath, value, "/privkey1.pem")), + cert: fs.readFileSync(join(letsencryptPath, value, "/fullchain1.pem")), + ca: null, + })]) + ) +} diff --git a/src/index.ts b/src/index.ts new file mode 100644 index 0000000..9121a50 --- /dev/null +++ b/src/index.ts @@ -0,0 +1,35 @@ +import { getHttps } from "./https"; +import { createServer as httpServer } from 'http' +import { Config } from "./config"; +import getProxy from "./proxy"; +import { env } from "./env"; + + +const HTTP_PORT = env.HTTP_PORT(52080), + HTTPS_PORT = env.HTTPS_PORT(-1), + VOLUME_PATH = env.VOLUME_PATH('./vol'), + CERTS_PATH = env.LOAD_CERTS_FROM_VOLUME(0) ? VOLUME_PATH : env.CERTS_PATH('/etc/letsencrypt/live/') + +console.log("ENV Loaded:", { + HTTP_PORT, + HTTPS_PORT: HTTPS_PORT + (HTTPS_PORT == -1 ? ' (WITHOUT HTTPS)' : ''), + VOLUME_PATH, + CERTS_PATH: CERTS_PATH + (env.LOAD_CERTS_FROM_VOLUME(0) ? ' (Loaded from VOLUME_PATH)' : ''), +}) + +async function main() { + const config = await Config.load(VOLUME_PATH), + { app, upgrade } = getProxy(config) + + httpServer(app).on('upgrade', upgrade).listen(HTTP_PORT, function () { + console.log("Listening http on port: " + HTTP_PORT) + }); + if (HTTPS_PORT != -1) { + const httpsServer = await getHttps(config, CERTS_PATH) + httpsServer(app).on('upgrade', upgrade).listen(HTTPS_PORT, function () { + console.log("Listening https on port: " + HTTPS_PORT) + }) + } +} + +main() \ No newline at end of file diff --git a/src/proxy.ts b/src/proxy.ts new file mode 100644 index 0000000..2c5b110 --- /dev/null +++ b/src/proxy.ts @@ -0,0 +1,132 @@ +import express, { Request, Response } from "express"; + +import { Duplex } from "node:stream" +import { IncomingMessage } from 'http'; +import httpProxy from 'http-proxy'; +import cors from 'cors'; + +import { resolve, join } from 'path'; +import { lstat } from 'fs'; +import { Config, ConfigAtPath } from "./config"; + + +export default function getProxy(cfg: Config) { + const volumePath = resolve(cfg.volumePath), + app = express(), + proxy = httpProxy.createProxyServer(), + corsOptionsDelegate = function (req: Request, callback: (a: any, b: { origin: boolean }) => null) { + const proxyData = getProxyData(req), + _origin = (req.header('Origin') || req.header('Referer') || 'None').split('//'), + origin = _origin[_origin.length - 1].split('/')[0].split(':')[0] + + let answer = false + + if (proxyData) + if (proxyData.cors == '*') + answer = true + else + for (const domain of proxyData.cors) + if (origin.endsWith(domain)) { + answer = true + break + } + + if (req.res) + req.res.locals.cors = answer + + callback(null, { origin: answer }); + }; + + function prettyLog(data: any) { + console.log(JSON.stringify(data, undefined, 2)) + } + + function handleRequest(proxyData: ConfigAtPath, req: Request, res: Response) { + const log: { [key: string]: any } = { + 'IN_HOST': req.hostname, + 'IN_PATH': req.path, + 'IN_QUERY': req.query, + 'IN_HEADERS': req.headers, + 'CORS_ALLOWED': !!res.locals.cors + } + + if (Config.isStatic(proxyData)) { + log.PROXY_TYPE = 'STATIC' + const path = join(volumePath, proxyData.folder, '/' + req.path.substring(proxyData.exclude)); + log.FILE_PATH = path + lstat(path, (err, stat) => { + if (err || !stat.isFile()) { + log.FILE_FOUND = false + prettyLog(log) + + res.status(404).send('

File not exist

') + return; + } + log.FILE_FOUND = false + prettyLog(log) + + res.sendFile(path) + }) + return; + } + + const domain = req.headers.host = proxyData.rewriteDomain ? proxyData.domain : req.hostname + const headers = req.headers = { ...proxyData.headers, ...req.headers } + const target = (proxyData.https ? 'https://' : 'http://') + proxyData.domain + (proxyData.port ? ':' + proxyData.port : '') + + req.url = '/' + req.url.substring(proxyData.exclude) + + log.PROXY_TYPE = 'DYNAMIC' + log.REDIRECTED_TO = target + log.OUT_HOST = domain + log.OUT_PATH = req.path + log.OUT_HEADERS = headers + prettyLog(log) + + proxy.web(req, res, { + target, + hostRewrite: domain + }, () => res.status(503).send('Service unavailable')) + } + + function getProxyData(req: { hostname: string, path: string }): ConfigAtPath { + return cfg.getProxyData(req.hostname, req.path) + } + + app.use(cors(corsOptionsDelegate)) + + app.use((req, res) => { + const proxyData = getProxyData(req); + if (proxyData) + return handleRequest(proxyData, req, res) + + prettyLog({ + 'IN_HOST': req.hostname, + 'IN_PATH': req.path, + 'IN_QUERY': req.query, + 'IN_HEADERS': req.headers, + 'PROXY_TYPE': 'NOT_FOUND' + }) + res.status(404).send('Not found') + }) + + return { + app, + upgrade: (req: IncomingMessage, socket: Duplex, head: Buffer) => { + + const { hostname, pathname: path } = new URL(req.url, `http://${req.headers.host}`); + const proxyData = getProxyData({ + hostname, + path + }) + + if (proxyData && !Config.isStatic(proxyData)) + proxy.ws(req, socket, head, { + ws: true, + target: 'ws://' + proxyData.domain + (proxyData.port ? ':' + proxyData.port : ''), + hostRewrite: proxyData.rewriteDomain ? proxyData.domain : hostname + }, () => null) + + } + } +} \ No newline at end of file diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..43ad8dd --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,14 @@ +{ + "compilerOptions": { + "module": "commonjs", + "resolveJsonModule": true, + "esModuleInterop": true, + "target": "es6", + "moduleResolution": "node", + "sourceMap": false, + "outDir": "dist" + }, + "lib": [ + "es2015" + ] +} \ No newline at end of file