LiSense LAAS Integration Guide

// Install: npm install laas-client
const LAAS = require('laas-client');

async function validateLicense() {
    const license = await LAAS.validate(
        'LAAS-XXXX-XXXX', 
        123,
        { cacheTtl: 3600 }
    );
    
    if (!license.valid) {
        throw new Error(license.error);
    }
}

// server.js
const express = require('express');
const crypto = require('crypto');

const app = express();
app.use(express.json({ verify: verifySignature }));

function verifySignature(req, res, buf) {
    const signature = req.get('X-LAAS-Signature');
    const hmac = crypto.createHmac('sha256', process.env.WEBHOOK_SECRET);
    const digest = hmac.update(buf).digest('hex');
    
    if (!crypto.timingSafeEqual(
        Buffer.from(signature), 
        Buffer.from(digest)
    )) throw new Error('Invalid signature');
}

app.post('/webhooks', (req, res) => {
    console.log('Received event:', req.body.type);
    res.sendStatus(200);
});

app.listen(3000);

# Install: pip install laas-client
from laas import validate_license

license = validate_license(
    code="LAAS-XXXX-XXXX",
    app_id=123,
    cache_ttl=3600
)

if not license['valid']:
    raise Exception(license['error'])

# app.py
from flask import Flask, request, abort
import hmac
import hashlib

app = Flask(__name__)
WEBHOOK_SECRET = b'your_secret_here'

@app.route('/webhooks', methods=['POST'])
def handle_webhook():
    signature = request.headers.get('X-LAAS-Signature')
    if not verify_signature(request.data, signature):
        abort(401)
    
    event = request.json
    print(f"Received {event['type']} event")
    return '', 200

def verify_signature(payload, signature):
    digest = hmac.new(
        WEBHOOK_SECRET, 
        payload, 
        hashlib.sha256
    ).hexdigest()
    return hmac.compare_digest(digest, signature)