[Dong] support custom auth via command line (#89)

* [Dong] support custom auth via command line

* [Dong] fixed code style issue

* [TECH][Dong] use cli parameter instead of question

Co-authored-by: Dong,WANG <dong.wang@anz.com>

.gitignore

@@ -1,3 +1,4 @@
+.idea
 build/
 build-*/
 .vs/

README.md

@@ -154,7 +154,20 @@ npm run build # build ts to js. run it again when code changed.
 npm start
 ```
 
-The server will listen to port `11451/udp`.
+Use `--port` pass the port parameter, or else it will use  `11451/udp` as default.
+
+Use `--simpleAuth` pass the auth via username and password, or else there's no authentication.
+
+Use `--httpAuth` pass the auth via http url, or else there's no authentication.
+
+Use `--jsonAuth` pass the auth via json file, or else there's no authentication.
+
+Example:
+
+```sh
+npm run build
+npm start -- --port 10086 --simpleAuth username:password
+```
 
 Meanwhile the monitor service will be started on port `11451/tcp` by default, you can get online client count via HTTP request:
 

server/src/auth/CustomAuthProvider.ts

@@ -0,0 +1,14 @@
+import { BasicAuthProvider, AuthError, AuthErrorType, SHA1 } from './types'
+
+export class CustomAuthProvider extends BasicAuthProvider {
+  constructor(private username: string, private password: string) {
+    super()
+  }
+
+  async getUserPasswordSHA1(username: string) {
+    if (username !== this.username) {
+      throw new AuthError(AuthErrorType.NoSuchUser, 'No such user')
+    }
+    return Buffer.from(this.password, 'hex')
+  }
+}

server/src/main.ts

@@ -1,25 +1,45 @@
 import { SLPServer } from './udpserver'
 import { ServerMonitor } from './monitor'
-import { AuthProvider, JsonAuthProvider, HttpAuthProvider } from './auth'
+import { AuthProvider, HttpAuthProvider, JsonAuthProvider } from './auth'
+import { CustomAuthProvider } from "./auth/CustomAuthProvider";
 
-function main (argv: string[]) {
-  let port = argv[0]
-  let jsonPath = argv[1]
-  if (port === undefined) {
-    port = '11451'
+function parseArgs2Obj(args: string[]) {
+  let argsObj: any = {};
+  for (let i = 0; i < args.length; i += 2) {
+    let key: string = args[i];
+    let value: string = args[i + 1];
+    if (key.startsWith('--')) {
+      argsObj[key.slice(2)] = value;
+    }
   }
+  return argsObj;
+}
+
+function main(argv: string[]) {
+  let argsObj = parseArgs2Obj(argv);
+
   let provider: AuthProvider | undefined
-  const { USE_HTTP_PROVIDER } = process.env
+  const {USE_HTTP_PROVIDER} = process.env
   if (USE_HTTP_PROVIDER) {
     provider = new HttpAuthProvider(USE_HTTP_PROVIDER)
     console.log(`using HttpAuthProvider url: ${USE_HTTP_PROVIDER}`)
-  } else if (jsonPath) {
-    provider = new JsonAuthProvider(jsonPath)
-    console.log(`using JsonAuthProvider file: ${jsonPath}`)
+  } else if (argsObj.httpAuth) {
+    provider = new HttpAuthProvider(argsObj.httpAuth)
+    console.log(`using HttpAuthProvider url: ${argsObj.httpAuth}`)
+  } else if (argsObj.jsonAuth) {
+    provider = new JsonAuthProvider(argsObj.jsonAuth)
+    console.log(`using JsonAuthProvider file: ${argsObj.jsonAuth}`)
+  } else if (argsObj.simpleAuth) {
+    let username_password = argsObj.simpleAuth.split(':');
+    let username = username_password[0];
+    let password = username_password[1];
+    provider = new CustomAuthProvider(username, password);
+    console.log(`using simple auth with username=${username} password=${password}`);
   }
-  const portNum = parseInt(port)
+  const portNum = parseInt(argsObj.port || '11451')
   let s = new SLPServer(portNum, provider)
   let monitor = new ServerMonitor(s)
   monitor.start(portNum)
 }
+
 main(process.argv.slice(2))