Implement passkey recovery feature, including email link requests and registration options. Update login and registration pages to support passkey authentication, with UI enhancements for user experience. Add server-side handling for passkey registration and login, including account activation checks. Update environment configuration for passkey recovery TTL settings.

server/api/auth/passkeys/recovery/request.post.js

@@ -0,0 +1,100 @@
+import nodemailer from 'nodemailer'
+import { readUsers, writeUsers } from '../../../../utils/auth.js'
+import { assertRateLimit, getClientIp, registerRateLimitFailure, registerRateLimitSuccess } from '../../../../utils/rate-limit.js'
+import { generateRecoveryToken, hashRecoveryToken, pruneRecoveryTokens } from '../../../../utils/passkey-recovery.js'
+import { writeAuditLog } from '../../../../utils/audit-log.js'
+
+function isValidEmail(email) {
+  return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(String(email || ''))
+}
+
+export default defineEventHandler(async (event) => {
+  const body = await readBody(event)
+  const email = String(body?.email || '').trim().toLowerCase()
+
+  if (!email || !isValidEmail(email)) {
+    // No enumeration; still 200
+    return { success: true, message: 'Falls ein Konto mit dieser E-Mail existiert, wurde eine E-Mail gesendet.' }
+  }
+
+  const ip = getClientIp(event)
+  assertRateLimit(event, {
+    name: 'auth:passkey-recovery:request:ip',
+    keyParts: [ip],
+    windowMs: 60 * 60 * 1000,
+    maxAttempts: 30,
+    lockoutMs: 30 * 60 * 1000
+  })
+  assertRateLimit(event, {
+    name: 'auth:passkey-recovery:request:email',
+    keyParts: [email],
+    windowMs: 60 * 60 * 1000,
+    maxAttempts: 5,
+    lockoutMs: 60 * 60 * 1000
+  })
+
+  const users = await readUsers()
+  const user = users.find(u => String(u.email || '').toLowerCase() === email)
+
+  // Always respond success
+  if (!user) {
+    await registerRateLimitFailure(event, { name: 'auth:passkey-recovery:request:ip', keyParts: [ip] })
+    await registerRateLimitFailure(event, { name: 'auth:passkey-recovery:request:email', keyParts: [email] })
+    await writeAuditLog('auth.passkey.recovery.request', { ip, email, userFound: false })
+    return { success: true, message: 'Falls ein Konto mit dieser E-Mail existiert, wurde eine E-Mail gesendet.' }
+  }
+
+  // Token erzeugen und (gehasht) am User speichern
+  const token = generateRecoveryToken()
+  const tokenHash = hashRecoveryToken(token)
+  const ttlMin = Number(process.env.PASSKEY_RECOVERY_TTL_MIN || 30)
+  const expiresAt = new Date(Date.now() + ttlMin * 60 * 1000).toISOString()
+
+  if (!Array.isArray(user.passkeyRecoveryTokens)) user.passkeyRecoveryTokens = []
+  user.passkeyRecoveryTokens.push({
+    tokenHash,
+    createdAt: new Date().toISOString(),
+    expiresAt,
+    usedAt: null
+  })
+  pruneRecoveryTokens(user)
+
+  const updated = users.map(u => (u.id === user.id ? user : u))
+  await writeUsers(updated)
+
+  registerRateLimitSuccess(event, { name: 'auth:passkey-recovery:request:email', keyParts: [email] })
+  await writeAuditLog('auth.passkey.recovery.request', { ip, email, userFound: true, userId: user.id })
+
+  // Mail senden (wenn SMTP konfiguriert)
+  const smtpUser = process.env.SMTP_USER
+  const smtpPass = process.env.SMTP_PASS
+
+  if (smtpUser && smtpPass) {
+    const transporter = nodemailer.createTransport({
+      host: process.env.SMTP_HOST || 'smtp.gmail.com',
+      port: process.env.SMTP_PORT || 587,
+      secure: false,
+      auth: { user: smtpUser, pass: smtpPass }
+    })
+
+    const baseUrl = process.env.NUXT_PUBLIC_BASE_URL || 'http://localhost:3100'
+    const link = `${baseUrl}/passkey-wiederherstellen?token=${token}`
+
+    await transporter.sendMail({
+      from: process.env.SMTP_FROM || 'noreply@harheimertc.de',
+      to: user.email,
+      subject: 'Passkey wiederherstellen - Harheimer TC',
+      html: `
+        <h2>Passkey wiederherstellen</h2>
+        <p>Hallo ${user.name || ''},</p>
+        <p>Sie haben eine Anfrage gestellt, um einen neuen Passkey hinzuzufügen.</p>
+        <p>Bitte klicken Sie auf den folgenden Link (gültig für ${ttlMin} Minuten):</p>
+        <p><a href="${link}">Neuen Passkey hinzufügen</a></p>
+        <p>Wenn Sie das nicht waren, ignorieren Sie diese E-Mail.</p>
+      `
+    })
+  }
+
+  return { success: true, message: 'Falls ein Konto mit dieser E-Mail existiert, wurde eine E-Mail gesendet.' }
+})
+