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feat(passwd): self-service password reset across git, mail & chat (#59)

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Add a key-gated `ssh passwd@host` route (alias `password@`) that sets ONE
member-chosen password across every service with its own credential:

  - git  (Forgejo)        new forgejo.SetPassword (PATCH /admin/users, clears
                          must_change; EnsureUser first so the account exists)
  - mail (Mailu webmail)  existing mailu.SetPassword
  - chat (IRC/Ergo + The Lounge)  new internal/ircpass package

Because the route authenticates by the member's registered SSH key, it also
serves as the forgot-password path — no old password required.

The BBS runs as a non-root service user, but the Ergo password store and The
Lounge user files are root-owned. internal/ircpass bridges this by shelling out
to scripts/set-irc-password.sh through a narrow sudoers rule (installed by
setup.sh). The new password travels on stdin (a new `set-irc-password.sh
<member> -` form), so it never appears in the process table or sudo's log.

UX: masked entry typed twice (readSecret); no-PTY reads stdin; empty input
generates a strong password and shows it once. Each service leg is independent
and best-effort with a per-service ✓/✗ summary, plus a confirmation email that
never contains the password.

Tests: ircpass (stdin contract + member/password rejection), forgejo.SetPassword,
auth IsPasswdName + reservation. Docs: credentials.md (passwd@ section) + irc.md.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Anthony Ettinger 2026-06-27 03:46:23 -07:00 • committed by GitHub
parent f2bcb7e063
commit 54da317f4e
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11 changed files with 625 additions and 3 deletions
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19
internal/auth/auth_test.go
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@ -15,6 +15,25 @@ func TestIsAdminName(t *testing.T) {
}
}
func TestIsPasswdName(t *testing.T) {
for _, name := range []string{"passwd", "PASSWD", "password", "Password"} {
if !IsPasswdName(name) {
t.Errorf("IsPasswdName(%q) = false, want true", name)
}
}
for _, name := range []string{"pass", "pw", "anthony", ""} {
if IsPasswdName(name) {
t.Errorf("IsPasswdName(%q) = true, want false", name)
}
}
// The route names must not be claimable as account names.
for _, name := range []string{"passwd", "password"} {
if _, ok := SanitizeUsername(name); ok {
t.Errorf("SanitizeUsername(%q) should be reserved", name)
}
}
}
func TestAdminsAllowlist(t *testing.T) {
t.Setenv("AGENTBBS_ADMINS", "anthony, Root ops")
admins := Admins()