This is just to see the list of outstanding issues (to be replaced with the real README).

Please also check https://github.com/horde6/tessera/discussions

ISSUES:

1. Currently the TOTP code expects to be in vendor/horde/tessera folder. This might need to be changed, with the corresponding adjustments in the code.
2. TOTP should be added to Horde's global configuration. At the very least we need a setting which would specify TOTP state ("disabled", "enabled", "required"). Horde's login.php and login.inc need to be modified to add an input field for the TOTP (unless TOTP is disabled). Currently it is unconditional - see _patched folder.
3. Code in hooks.php (see _patched folder) might need to be moved elsewhere. Also, the code calls $this->authusername($userId, TRUE) directly. I should probably use convertUsername() instead.
4. The current code relies on SQL table nch_auth. This probably should be renamed to horde_totp (see issue #5).
5. Currently only SQL driver is supported. Potential compatilibity issue with REPLACE in https://github.com/amulet1/horde_totp/blob/main/lib/Driver/Sql.php.
6. Translations?