Core: Web GUI: Any attempt to configure DHCPv4 server results in Uncaught Exception

[icedream]

This issue appeared after updating an existing OPNsense installation from version 18.7.4 to 18.7.5. As a consequence, attempted changes to DHCPv4 server configurations in any way will no longer be saved at all.

I did not restart the firewall as the updater did not suggest it is necessary.

So far I have been able to produce the errors - each shown below - when attempting to...

• ...add custom options to DHCP server

  Fatal error: Uncaught OPNsense\Core\ConfigException: no valid config loaded in /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php:240
  Stack trace:
  #0 /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php(182): OPNsense\Core\Config->checkvalid()
  #1 /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php(221): OPNsense\Core\Config->fromArray(Array, Object(SimpleXMLElement), 'winsserver')
  #2 /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php(221): OPNsense\Core\Config->fromArray(Array, Object(SimpleXMLElement), 'opt1')
  #3 /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php(221): OPNsense\Core\Config->fromArray(Array, Object(SimpleXMLElement), 'dhcpd')
  #4 /usr/local/etc/inc/config.inc(156): OPNsense\Core\Config->fromArray(Array)
  #5 /usr/local/www/services_dhcp.php(458): write_config()
  #6 {main}
  thrown in /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php on line 240
  

• ...create a static lease (from a dynamic lease) and save it:

  Fatal error: Uncaught OPNsense\Core\ConfigException: no valid config loaded in /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php:240
  Stack trace:
  #0 /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php(182): OPNsense\Core\Config->checkvalid()
  #1 /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php(221): OPNsense\Core\Config->fromArray(Array, Object(SimpleXMLElement), 'winsserver')
  #2 /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php(221): OPNsense\Core\Config->fromArray(Array, Object(SimpleXMLElement), 0)
  #3 /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php(221): OPNsense\Core\Config->fromArray(Array, Object(SimpleXMLElement), 'staticmap')
  #4 /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php(221): OPNsense\Core\Config->fromArray(Array, Object(SimpleXMLElement), 'opt1')
  #5 /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php(221): OPNsense\Core\Config->fromArray(Array, Object(SimpleXMLElement), 'dhcpd')
  #6 /usr/local/etc/inc/config.inc(156): OPNsense\Core\ in /usr/local/opnsense/mvc/app/library/OPNsense/Core/Config.php on line 240
  

[fichtner]

We're already working on it via 66f348cc5 and hotfix is not far away. In the meantime:

# opnsense-patch 66f348cc5

Cheers,
Franco

[icedream]

Awesome! And thanks for the awesomely quick response. :D

[fichtner]

Online update to 18.7.5_1 should be visible on the mirrors now minus sync time. Everybody not affected can directly upgrade from 18.7.4 -> 18.7.5_1 :)

[fichtner]

PS: many thanks for the quick report ❤️