Added support for registering devices

common/TokenClaims.ts

@@ -19,4 +19,9 @@ export interface DeviceRegistrationToken extends BaseClaims {
     type: "device_reg";
 }
 
-export type TokenClaims = AccessToken | RefreshToken | DeviceRegistrationToken;
+export interface DeviceToken extends BaseClaims {
+    type: "device";
+    aud: string;
+}
+
+export type TokenClaims = AccessToken | RefreshToken | DeviceRegistrationToken | DeviceToken;

server/express/api/devices.ts

@@ -4,10 +4,26 @@ import { serialize} from "serializr";
 import ApiError from "@common/ApiError";
 import { ErrorCode } from "@common/ErrorCode";
 import * as schema from "@common/sprinklersRpc/schema";
-import { AccessToken } from "@common/TokenClaims";
+import { generateDeviceToken, verifyAuthorization } from "@server/express/authentication";
-import { verifyAuthorization } from "@server/express/authentication";
 import { ServerState } from "@server/state";
 
+const DEVICE_ID_LEN = 20;
+
+function randomDeviceId(): string {
+    let deviceId = "";
+    for (let i = 0; i < DEVICE_ID_LEN; i++) {
+        const j = Math.floor(Math.random() * 36);
+        let ch; // tslint:disable-next-line
+        if (j < 10) { // 0-9
+            ch = String.fromCharCode(48 + j);
+        } else { // a-z
+            ch = String.fromCharCode(97 + (j - 10));
+        }
+        deviceId += ch;
+    }
+    return deviceId;
+}
+
 export function devices(state: ServerState) {
     const router = PromiseRouter();
 
@@ -28,7 +44,23 @@ export function devices(state: ServerState) {
     router.post("/register", verifyAuthorization({
         type: "device_reg",
     }), async (req, res) => {
-        // TODO: Implement device registration
+        const deviceId = randomDeviceId();
+        const newDevice = state.database.sprinklersDevices.create({
+            name: "Sprinklers Device", deviceId,
+        });
+        await state.database.sprinklersDevices.save(newDevice);
+        const token = await generateDeviceToken(deviceId);
+        res.send({
+            data: newDevice, token,
+        });
+    });
+
+    router.post("/connect", verifyAuthorization({
+        type: "device",
+    }), async (req, res) => {
+        res.send({
+            url: state.mqttUrl,
+        });
     });
 
     return router;

server/express/authentication.ts

@@ -10,7 +10,7 @@ import {
     TokenGrantRequest,
     TokenGrantResponse,
 } from "@common/httpApi";
-import { AccessToken, DeviceRegistrationToken, RefreshToken, TokenClaims } from "@common/TokenClaims";
+import { AccessToken, DeviceRegistrationToken, DeviceToken, RefreshToken, TokenClaims } from "@common/TokenClaims";
 import { User } from "../entities";
 import { ServerState } from "../state";
 
@@ -69,7 +69,8 @@ export function verifyToken<TClaims extends TokenClaims = TokenClaims>(
             } else {
                 const claims: TokenClaims = decoded as any;
                 if (type != null && claims.type !== type) {
-                    reject(new ApiError(`Expected a "${type} token, received a "${claims.type}" token`));
+                    reject(new ApiError(`Expected a "${type}" token, received a "${claims.type}" token`,
+                        ErrorCode.BadToken));
                 }
                 resolve(claims as TClaims);
             }
@@ -109,6 +110,15 @@ function generateDeviceRegistrationToken(secret: string): Promise<string> {
     return signToken(device_reg_token_claims);
 }
 
+export function generateDeviceToken(deviceId: string): Promise<string> {
+    const device_token_claims: DeviceToken = {
+        iss: ISSUER,
+        type: "device",
+        aud: deviceId,
+    };
+    return signToken(device_token_claims);
+}
+
 export function authentication(state: ServerState) {
 
     const router = Router();
@@ -201,12 +211,7 @@ export function verifyAuthorization(options?: Partial<VerifyAuthorizationOpts>):
             }
             const token = matches[1];
 
-            req.token = await verifyToken<AccessToken>(token, "access");
+            req.token = await verifyToken(token, opts.type) as any;
-
-            if (req.token.type !== opts.type) {
-                throw new ApiError(`Invalid token type "${req.token.type}", must be "${opts.type}"`,
-                    ErrorCode.BadToken);
-            }
         };
         fun().then(() => next(null), (err) => next(err));
     };

server/state.ts

@@ -3,6 +3,7 @@ import * as mqtt from "@common/sprinklersRpc/mqtt";
 import { Database } from "./Database";
 
 export class ServerState {
+    mqttUrl: string;
     mqttClient: mqtt.MqttRpcClient;
     database: Database;
 
@@ -11,6 +12,7 @@ export class ServerState {
         if (!mqttUrl) {
             throw new Error("Must specify a MQTT_URL to connect to");
         }
+        this.mqttUrl = mqttUrl;
         this.mqttClient = new mqtt.MqttRpcClient(mqttUrl);
         this.database = new Database();
     }