Feat/esigner

.env.example

@@ -63,6 +63,8 @@ PUBLIC_APP_STORE_EID_WALLET=""
 PUBLIC_PLAY_STORE_EID_WALLET=""
 NOTIFICATION_SHARED_SECRET=your-notification-secret-key
 
+PUBLIC_ESIGNER_BASE_URL="http://localhost:3004"
+
 DREAMSYNC_DATABASE_URL=postgresql://postgres:postgres@localhost:5432/dreamsync
 VITE_DREAMSYNC_BASE_URL="http://localhost:8888"
 

platforms/esigner-api/package.json

@@ -0,0 +1,48 @@
+{
+    "name": "esigner-api",
+    "version": "1.0.0",
+    "description": "eSigner Document Signing Platform API",
+    "main": "src/index.ts",
+    "scripts": {
+        "start": "ts-node src/index.ts",
+        "dev": "nodemon --exec ts-node src/index.ts",
+        "build": "tsc && cp -r src/web3adapter/mappings dist/web3adapter/",
+        "typeorm": "typeorm-ts-node-commonjs",
+        "migration:generate": "npm run typeorm migration:generate -- -d src/database/data-source.ts",
+        "migration:run": "npm run typeorm migration:run -- -d src/database/data-source.ts",
+        "migration:revert": "npm run typeorm migration:revert -- -d src/database/data-source.ts"
+    },
+    "dependencies": {
+        "axios": "^1.6.7",
+        "cors": "^2.8.5",
+        "dotenv": "^16.4.5",
+        "eventsource-polyfill": "^0.9.6",
+        "express": "^4.18.2",
+        "graphql-request": "^6.1.0",
+        "jsonwebtoken": "^9.0.2",
+        "multer": "^1.4.5-lts.1",
+        "pg": "^8.11.3",
+        "reflect-metadata": "^0.2.1",
+        "typeorm": "^0.3.24",
+        "uuid": "^9.0.1",
+        "signature-validator": "workspace:*",
+        "web3-adapter": "workspace:*"
+    },
+    "devDependencies": {
+        "@types/cors": "^2.8.17",
+        "@types/express": "^4.17.21",
+        "@types/jsonwebtoken": "^9.0.5",
+        "@types/multer": "^1.4.11",
+        "@types/node": "^20.11.24",
+        "@types/pg": "^8.11.2",
+        "@types/uuid": "^9.0.8",
+        "@typescript-eslint/eslint-plugin": "^7.0.1",
+        "@typescript-eslint/parser": "^7.0.1",
+        "eslint": "^8.56.0",
+        "nodemon": "^3.0.3",
+        "ts-node": "^10.9.2",
+        "typescript": "^5.3.3"
+    }
+}
+
+

platforms/esigner-api/src/controllers/AuthController.ts

@@ -0,0 +1,134 @@
+import { Request, Response } from "express";
+import { v4 as uuidv4 } from "uuid";
+import { UserService } from "../services/UserService";
+import { EventEmitter } from "events";
+import { signToken } from "../utils/jwt";
+import { isVersionValid } from "../utils/version";
+import { verifySignature } from "signature-validator";
+
+const MIN_REQUIRED_VERSION = "0.4.0";
+
+export class AuthController {
+    private userService: UserService;
+    private eventEmitter: EventEmitter;
+
+    constructor() {
+        this.userService = new UserService();
+        this.eventEmitter = new EventEmitter();
+    }
+
+    sseStream = async (req: Request, res: Response) => {
+        const { id } = req.params;
+
+        res.writeHead(200, {
+            "Content-Type": "text/event-stream",
+            "Cache-Control": "no-cache",
+            Connection: "keep-alive",
+            "Access-Control-Allow-Origin": "*",
+        });
+
+        const handler = (data: any) => {
+            res.write(`data: ${JSON.stringify(data)}\n\n`);
+        };
+
+        this.eventEmitter.on(id, handler);
+
+        req.on("close", () => {
+            this.eventEmitter.off(id, handler);
+            res.end();
+        });
+
+        req.on("error", (error) => {
+            console.error("SSE Error:", error);
+            this.eventEmitter.off(id, handler);
+            res.end();
+        });
+    };
+
+    getOffer = async (req: Request, res: Response) => {
+        const url = new URL(
+            "/api/auth",
+            process.env.PUBLIC_ESIGNER_BASE_URL,
+        ).toString();
+        const session = uuidv4();
+        const offer = `w3ds://auth?redirect=${url}&session=${session}&platform=esigner`;
+        res.json({ uri: offer });
+    };
+
+    login = async (req: Request, res: Response) => {
+        try {
+            const { ename, session, appVersion, signature } = req.body;
+
+            if (!ename) {
+                return res.status(400).json({ error: "ename is required" });
+            }
+
+            if (!session) {
+                return res.status(400).json({ error: "session is required" });
+            }
+
+            if (!signature) {
+                return res.status(400).json({ error: "signature is required" });
+            }
+
+            if (!appVersion || !isVersionValid(appVersion, MIN_REQUIRED_VERSION)) {
+                const errorMessage = {
+                    error: true,
+                    message: `Your eID Wallet app version is outdated. Please update to version ${MIN_REQUIRED_VERSION} or later.`,
+                    type: "version_mismatch"
+                };
+                this.eventEmitter.emit(session, errorMessage);
+                return res.status(400).json({ 
+                    error: "App version too old", 
+                    message: errorMessage.message 
+                });
+            }
+
+            const registryBaseUrl = process.env.PUBLIC_REGISTRY_URL;
+            if (!registryBaseUrl) {
+                console.error("PUBLIC_REGISTRY_URL not configured");
+                return res.status(500).json({ error: "Server configuration error" });
+            }
+
+            const verificationResult = await verifySignature({
+                eName: ename,
+                signature: signature,
+                payload: session,
+                registryBaseUrl: registryBaseUrl,
+            });
+
+            if (!verificationResult.valid) {
+                console.error("Signature validation failed:", verificationResult.error);
+                return res.status(401).json({ 
+                    error: "Invalid signature", 
+                    message: verificationResult.error 
+                });
+            }
+
+            let user = await this.userService.findByEname(ename);
+
+            if (!user) {
+                throw new Error("User not found");
+            }
+
+            const token = signToken({ userId: user.id });
+
+            const data = {
+                user: {
+                    id: user.id,
+                    ename: user.ename,
+                    isVerified: user.isVerified,
+                    isPrivate: user.isPrivate,
+                },
+                token,
+            };
+            this.eventEmitter.emit(session, data);
+            res.status(200).json(data);
+        } catch (error) {
+            console.error("Error during login:", error);
+            res.status(500).json({ error: "Internal server error" });
+        }
+    };
+}
+
+