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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 | /** * Routes 2FA / TOTP — Authentification a deux facteurs. * * Endpoints : * POST /auth/2fa/setup — Genere un secret TOTP + QR code (non active tant que non verifie) * POST /auth/2fa/verify — Verifie un code TOTP et active le 2FA * POST /auth/2fa/disable — Desactive le 2FA (mot de passe requis) * GET /auth/2fa/status — Statut du 2FA (active ou non) * POST /auth/2fa/validate — Valide un code TOTP lors du login * POST /auth/2fa/backup — Valide un code de secours lors du login * GET /auth/2fa/backup-codes — Regenere de nouveaux codes de secours * * @module routes/twofa */ const express = require('express'); const bcrypt = require('bcryptjs'); const jwt = require('jsonwebtoken'); const crypto = require('node:crypto'); const { pool: db } = require('../db'); const { requireAuth } = require('../middleware/auth'); const { generateSecret, generateQRCode, verifyCode, generateBackupCodes, hashBackupCode, encryptSecret, decryptSecret, } = require('../services/totp'); const { verify2FAToken, issueSessionTokens, replaceBackupCodes } = require('../helpers/sessionTokens'); const router = express.Router(); function clientIp(req) { const forwarded = req.headers['x-forwarded-for']; if (forwarded) return forwarded.split(',')[0].trim(); const xRealIp = req.headers['x-real-ip']; if (xRealIp) return xRealIp; return req.ip || req.socket?.remoteAddress || 'unknown'; } // ─── POST /auth/2fa/setup — Generer le secret (pas encore active) ──────────── router.post('/setup', requireAuth, async (req, res, next) => { try { // Verifier que le 2FA n'est pas deja actif const { rows } = await db.query('SELECT totp_enabled FROM users WHERE id = $1', [req.user.id]); if (rows[0]?.totp_enabled) { return res.status(400).json({ error: 'Le 2FA est deja active. Desactivez-le avant de le reconfigurer.' }); } // Generer un nouveau secret const { secret, uri } = generateSecret(req.user.email); // Stocker le secret chiffre (pas encore active tant que l'utilisateur n'a pas verifie) const encrypted = encryptSecret(secret); await db.query( 'UPDATE users SET totp_secret_encrypted = $1, totp_enabled = FALSE WHERE id = $2', [encrypted, req.user.id], ); // Generer le QR code const qrCode = await generateQRCode(uri); res.json({ secret, // Affiche pour saisie manuelle qrCode, // Data URL du QR code uri, // URI otpauth:// (au cas ou) }); } catch (err) { next(err); } }); // ─── POST /auth/2fa/verify — Verifier le code et activer le 2FA ───────────── router.post('/verify', requireAuth, async (req, res, next) => { try { const { code } = req.body; if (!code || !/^\d{6}$/.test(code)) { return res.status(400).json({ error: 'Code a 6 chiffres requis.' }); } // Recuperer le secret en attente const { rows } = await db.query( 'SELECT totp_secret_encrypted, totp_enabled FROM users WHERE id = $1', [req.user.id], ); const user = rows[0]; if (!user?.totp_secret_encrypted) { return res.status(400).json({ error: 'Aucun setup 2FA en cours. Appelez /auth/2fa/setup d\'abord.' }); } if (user.totp_enabled) { return res.status(400).json({ error: 'Le 2FA est deja active.' }); } // Dechiffrer et verifier le code const secret = decryptSecret(user.totp_secret_encrypted); if (!verifyCode(secret, code)) { return res.status(400).json({ error: 'Code invalide. Verifiez votre application d\'authentification.' }); } // Generer les codes de secours const backupCodes = generateBackupCodes(); const backupHashes = backupCodes.map(hashBackupCode); // Transaction : activer le 2FA + inserer les codes de secours const client = await db.connect(); try { await client.query('BEGIN'); await client.query( 'UPDATE users SET totp_enabled = TRUE, totp_verified_at = NOW() WHERE id = $1', [req.user.id], ); // Supprimer d'anciens codes eventuels await client.query('DELETE FROM totp_backup_codes WHERE user_id = $1', [req.user.id]); // Inserer les nouveaux codes hashes for (const hash of backupHashes) { await client.query( 'INSERT INTO totp_backup_codes (user_id, code_hash) VALUES ($1, $2)', [req.user.id, hash], ); } await client.query('COMMIT'); } catch (err) { await client.query('ROLLBACK'); throw err; } finally { client.release(); } // Audit db.query( `INSERT INTO audit_logs (user_id, action, category, ip, details) VALUES ($1, '2FA active', 'auth', $2, '{}')`, [req.user.id, clientIp(req)], ).catch(() => {}); res.json({ message: 'Authentification a deux facteurs activee.', backupCodes, // Affiche une seule fois ! }); } catch (err) { next(err); } }); // ─── POST /auth/2fa/disable — Desactiver le 2FA ───────────────────────────── router.post('/disable', requireAuth, async (req, res, next) => { try { const { password } = req.body; if (!password) { return res.status(400).json({ error: 'Mot de passe requis pour desactiver le 2FA.' }); } // Verifier le mot de passe const { rows } = await db.query('SELECT password_hash, totp_enabled FROM users WHERE id = $1', [req.user.id]); const user = rows[0]; if (!user?.totp_enabled) { return res.status(400).json({ error: 'Le 2FA n\'est pas actif.' }); } const valid = await bcrypt.compare(password, user.password_hash); if (!valid) { return res.status(401).json({ error: 'Mot de passe incorrect.' }); } // Desactiver le 2FA et supprimer le secret + codes de secours const client = await db.connect(); try { await client.query('BEGIN'); await client.query( 'UPDATE users SET totp_enabled = FALSE, totp_secret_encrypted = NULL, totp_verified_at = NULL WHERE id = $1', [req.user.id], ); await client.query('DELETE FROM totp_backup_codes WHERE user_id = $1', [req.user.id]); await client.query('COMMIT'); } catch (err) { await client.query('ROLLBACK'); throw err; } finally { client.release(); } // Audit db.query( `INSERT INTO audit_logs (user_id, action, category, ip, details) VALUES ($1, '2FA desactive', 'auth', $2, '{}')`, [req.user.id, clientIp(req)], ).catch(() => {}); res.json({ message: 'Authentification a deux facteurs desactivee.' }); } catch (err) { next(err); } }); // ─── GET /auth/2fa/status — Statut du 2FA ─────────────────────────────────── router.get('/status', requireAuth, async (req, res, next) => { try { const { rows } = await db.query( 'SELECT totp_enabled, totp_verified_at FROM users WHERE id = $1', [req.user.id], ); const user = rows[0]; // Compter les codes de secours restants const { rows: backupRows } = await db.query( 'SELECT COUNT(*) FROM totp_backup_codes WHERE user_id = $1 AND used = FALSE', [req.user.id], ); res.json({ enabled: user?.totp_enabled || false, verifiedAt: user?.totp_verified_at || null, backupCodesRemaining: Number.parseInt(backupRows[0].count), }); } catch (err) { next(err); } }); // ─── POST /auth/2fa/validate — Valider un code TOTP lors du login ──────────── router.post('/validate', async (req, res, next) => { try { const { code, twofa_token } = req.body; if (!twofa_token) { return res.status(400).json({ error: 'Token 2FA temporaire requis.' }); } if (!code || !/^\d{6}$/.test(code)) { return res.status(400).json({ error: 'Code a 6 chiffres requis.' }); } // Verifier le token temporaire 2FA const tokenCheck = verify2FAToken(twofa_token); if (!tokenCheck.valid) { return res.status(401).json({ error: tokenCheck.error }); } const payload = tokenCheck.payload; // Recuperer l'utilisateur et le secret TOTP const { rows } = await db.query( 'SELECT id, email, plan, email_verified, totp_secret_encrypted, totp_enabled FROM users WHERE id = $1', [payload.sub], ); const user = rows[0]; if (!user?.totp_enabled || !user?.totp_secret_encrypted) { return res.status(400).json({ error: '2FA non configure pour cet utilisateur.' }); } const secret = decryptSecret(user.totp_secret_encrypted); if (!verifyCode(secret, code)) { // Audit echec db.query( `INSERT INTO audit_logs (user_id, action, category, ip, details) VALUES ($1, '2FA echec', 'auth', $2, '{}')`, [user.id, clientIp(req)], ).catch(() => {}); return res.status(401).json({ error: 'Code invalide.' }); } // Code valide → emettre les vrais tokens de session await issueSessionTokens(user, req, res); // Audit succes db.query( `INSERT INTO audit_logs (user_id, action, category, ip, details) VALUES ($1, 'Connexion 2FA', 'auth', $2, '{}')`, [user.id, clientIp(req)], ).catch(() => {}); res.json({ user: { id: user.id, email: user.email, plan: user.plan, email_verified: user.email_verified }, }); } catch (err) { next(err); } }); // ─── POST /auth/2fa/backup — Valider un code de secours lors du login ──────── router.post('/backup', async (req, res, next) => { try { const { code, twofa_token } = req.body; if (!twofa_token) { return res.status(400).json({ error: 'Token 2FA temporaire requis.' }); } if (!code) { return res.status(400).json({ error: 'Code de secours requis.' }); } // Verifier le token temporaire const tokenCheck = verify2FAToken(twofa_token); if (!tokenCheck.valid) { return res.status(401).json({ error: tokenCheck.error }); } const payload = tokenCheck.payload; // Recuperer l'utilisateur const { rows } = await db.query( 'SELECT id, email, plan, email_verified, totp_enabled FROM users WHERE id = $1', [payload.sub], ); const user = rows[0]; if (!user?.totp_enabled) { return res.status(400).json({ error: '2FA non configure pour cet utilisateur.' }); } // Verifier le code de secours const codeHash = hashBackupCode(code); const { rows: backupRows } = await db.query( 'SELECT id FROM totp_backup_codes WHERE user_id = $1 AND code_hash = $2 AND used = FALSE', [user.id, codeHash], ); if (backupRows.length === 0) { return res.status(401).json({ error: 'Code de secours invalide ou deja utilise.' }); } // Marquer le code comme utilise await db.query( 'UPDATE totp_backup_codes SET used = TRUE, used_at = NOW() WHERE id = $1', [backupRows[0].id], ); // Emettre les vrais tokens de session await issueSessionTokens(user, req, res); // Audit db.query( `INSERT INTO audit_logs (user_id, action, category, ip, details) VALUES ($1, 'Connexion code secours', 'auth', $2, '{}')`, [user.id, clientIp(req)], ).catch(() => {}); res.json({ user: { id: user.id, email: user.email, plan: user.plan, email_verified: user.email_verified }, }); } catch (err) { next(err); } }); // ─── GET /auth/2fa/backup-codes — Regenerer les codes de secours ──────────── router.get('/backup-codes', requireAuth, async (req, res, next) => { try { // Verifier que le 2FA est actif const { rows } = await db.query('SELECT totp_enabled FROM users WHERE id = $1', [req.user.id]); if (!rows[0]?.totp_enabled) { return res.status(400).json({ error: 'Le 2FA n\'est pas actif.' }); } // Generer de nouveaux codes const backupCodes = generateBackupCodes(); const backupHashes = backupCodes.map(hashBackupCode); // Remplacer les anciens codes await replaceBackupCodes(req.user.id, backupHashes); // Audit db.query( `INSERT INTO audit_logs (user_id, action, category, ip, details) VALUES ($1, 'Codes secours regeneres', 'auth', $2, '{}')`, [req.user.id, clientIp(req)], ).catch(() => {}); res.json({ backupCodes }); } catch (err) { next(err); } }); module.exports = router; |