@bluejeans/flexdoc-backend/dist/setup.js

FlexDoc backend integration for NestJS and other frameworks

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
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      desc = { enumerable: true, get: function() { return m[k]; } };
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    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
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        if (mod && mod.__esModule) return mod;
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        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.setupFlexDoc = setupFlexDoc;
const template_1 = require("./template");
const crypto = __importStar(require("crypto"));
const jwt = __importStar(require("jsonwebtoken"));
function generatePassword(username, secret) {
    const hmac = crypto.createHmac('sha256', secret);
    hmac.update(username);
    const hash = hmac.digest('base64');
    const basePassword = hash.substring(0, 12);
    let password = basePassword;
    if (!/[A-Z]/.test(password))
        password += 'A';
    if (!/[a-z]/.test(password))
        password += 'a';
    if (!/[0-9]/.test(password))
        password += '1';
    if (!/[^A-Za-z0-9]/.test(password))
        password += '!';
    return password;
}
function createAuthMiddleware(authOptions) {
    return (req, res, next) => {
        if (!authOptions) {
            return next();
        }
        const { type, secretKey } = authOptions;
        if (type === 'basic') {
            const authHeader = req.headers.authorization;
            if (!authHeader || !authHeader.startsWith('Basic ')) {
                res.statusCode = 401;
                res.setHeader('WWW-Authenticate', 'Basic');
                return res.end('Authentication required');
            }
            const base64Credentials = authHeader.split(' ')[1];
            const credentials = Buffer.from(base64Credentials, 'base64').toString('ascii');
            const [username, password] = credentials.split(':');
            const expectedPassword = generatePassword(username, secretKey);
            if (password !== expectedPassword) {
                res.statusCode = 401;
                res.setHeader('WWW-Authenticate', 'Basic');
                return res.end('Invalid credentials');
            }
            return next();
        }
        if (type === 'bearer') {
            const authHeader = req.headers.authorization;
            if (authHeader && authHeader.startsWith('Bearer ')) {
                const token = authHeader.split(' ')[1];
                try {
                    jwt.verify(token, secretKey);
                    return next();
                }
                catch (err) {
                    res.statusCode = 401;
                    res.setHeader('WWW-Authenticate', 'Basic realm="Enter token as password"');
                    return res.end('Invalid or expired token');
                }
            }
            if (authHeader && authHeader.startsWith('Basic ')) {
                const base64Credentials = authHeader.split(' ')[1];
                const credentials = Buffer.from(base64Credentials, 'base64').toString('ascii');
                const [username, token] = credentials.split(':');
                try {
                    jwt.verify(token, secretKey);
                    return next();
                }
                catch (err) {
                    res.statusCode = 401;
                    res.setHeader('WWW-Authenticate', 'Basic realm="Enter token as password"');
                    return res.end('Invalid or expired token');
                }
            }
            res.statusCode = 401;
            res.setHeader('WWW-Authenticate', 'Basic realm="Enter token as password"');
            return res.end('Authentication required');
        }
        return next();
    };
}
function setupFlexDoc(app, path, options) {
    const { spec, specUrl, options: flexDocOptions } = options;
    const normalizedPath = path.startsWith('/') ? path : `/${path}`;
    if (flexDocOptions?.auth) {
        app.use(normalizedPath, createAuthMiddleware(flexDocOptions.auth));
    }
    app.use(normalizedPath, (req, res) => {
        const html = (0, template_1.generateFlexDocHTML)(spec || null, {
            ...flexDocOptions,
            specUrl,
        });
        res.setHeader('Content-Type', 'text/html');
        res.send(html);
    });
}
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