finish gateway websocket example

1 files changed, 27 insertions, 0 deletions

diff --git a/server/providers/guards/gatewayauth.guard.ts b/server/providers/guards/gatewayauth.guard.ts
new file mode 100644
index 0000000..0843752
--- /dev/null
+++ b/server/providers/guards/gatewayauth.guard.ts
@@ -0,0 +1,27 @@
+import { Injectable, CanActivate, ExecutionContext } from '@nestjs/common';
+import { JwtService } from '../services/jwt.service';
+import { GuardUtil } from '../util/guard.util';
+import { Socket } from 'socket.io';
+import { WsException } from '@nestjs/websockets';
+
+@Injectable()
+export class GatewayAuthGuard implements CanActivate {
+  constructor(private guardUtil: GuardUtil, private jwtService: JwtService) {}
+
+  canActivate(context: ExecutionContext) {
+    // Handlers and Controllers can both skip this guard in the event that
+    if (this.guardUtil.shouldSkip(this, context)) {
+      return true;
+    }
+
+    const req = context.switchToHttp().getRequest() as Socket;
+    const jwt = req.handshake.auth.token;
+    if (!jwt) throw new WsException('Invalid auth token');
+    try {
+      req.handshake.auth.jwtBody = this.jwtService.parseToken(jwt);
+    } catch (e) {
+      throw new WsException('Invalid auth token');
+    }
+    return true;
+  }
+}