Files
selfpost/internal/app/password.go
T
mixandClaude Opus 5.5 08087795cd docs, comments: the drift the audit listed (audit 2026-10-17, stage 6)
The lines under "Doc and comment drift" that the findings' own commits
did not already fix:
- security.md: a newer confirmation link replaces the older, a reset link
  is not replaced; html/template renders every page (no themes); the
  container keeps eight capabilities, named, not "KILL".
- architecture.md: ImportKey writes over a name's key, as an import must;
  the error text reaches the browser on the Backup page's import refusal.
- guide: with Caddy the key is in Caddy's data, so a full backup refuses
  until certs/ holds a copy (or back up caddy-data).
- comments: sasldb2 holds application passwords in the clear (store,
  app/password.go); texthash folds ASCII (sender.go); the supervisor
  socket's group is supervisor (rpc.go); cert-reload's OpenSSL measurement
  was 3.0.x of bookworm; sendReset's limits (links.go).
Migration 0013's comment stays as shipped.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-17 22:40:24 +03:00

29 lines
1.0 KiB
Go

package app
import (
"crypto/rand"
"encoding/base64"
"fmt"
)
// passwordBytes is the number of random bytes behind a generated application
// password. 24 bytes = 192 bits of entropy, well above any brute-force concern
// for a SASL credential the panel shows exactly once (security.md).
const passwordBytes = 24
// generatePassword returns a strong, URL-safe random password for an
// application's SASL account. The panel generates it, shows it once and never
// stores it in its own database; sasldb2 keeps it, in the clear, as Cyrus
// does for PLAIN and LOGIN (security.md).
//
// base64url output keeps the password to a safe ASCII alphabet with no shell or
// SMTP-special characters, so it survives being typed into client configuration
// and passed to saslpasswd2 over stdin unchanged.
func generatePassword() (string, error) {
buf := make([]byte, passwordBytes)
if _, err := rand.Read(buf); err != nil {
return "", fmt.Errorf("generate password: %w", err)
}
return base64.RawURLEncoding.EncodeToString(buf), nil
}