Log file flooded with apps/user_ldap/lib/Access.php#1852

[buttle]

Hello,

We’ve recently started using LDAP with more than just test users. I am seeing this error in the log.

Nextcloud version (eg, 12.0.2): 12.0.4.3
Operating system and version (eg, Ubuntu 17.04): ubuntu xenial
Apache or nginx version (eg, Apache 2.4.25): Apache/2.4.18 (Ubuntu)
PHP version (eg, 7.1): PHP 7.0.22-0ubuntu0.16.04.1 (cli) ( NTS )

Is this the first time you’ve seen this error? (Y/N): Y

Steps to replicate it: Unknown

The output of your Nextcloud log in Admin > Logging:
The log file is absolutely flooded with this message
Invalid argument supplied for foreach() at /var/www/nextcloud/apps/user_ldap/lib/Access.php#1852

The output of config.php file

$CONFIG = array (
  'instanceid' => 'xxxxxxxxxxxxxx',
  'passwordsalt' => 'xxxxxxxxxxxxxxxxxxx',
  'secret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx,
  'trusted_domains' => 
  array (
    0 => 'my_domain.com',
  ),
  'datadirectory' => '/opt/nextcloud-data',
  'overwriteprotocol' => 'https',
  'overwrite.cli.url' => 'http://my_domain.com',
  'htaccess.RewriteBase' => '/',
  'dbtype' => 'mysql',
  'version' => '12.0.4.3',
  'dbname' => 'nextcloud',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'nextcloud',
  'dbpassword' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx',
  'installed' => true,
  'ldapIgnoreNamingRules' => false,
  'default_language' => 'ca',
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'filelocking.enabled' => 'true',
  'redis' => 
  array ( 
    'host' => 'localhost',
    'port' => 6379,
  ),
  'maintenance' => false,
  'theme' => '',
  'loglevel' => 2,
  'mail_smtpmode' => 'sendmail',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_from_address' => 'no-reply',
  'mail_domain' => 'mydomain.com',
);

Thanks for any help!

[MorrisJobke]

cc @nextcloud/ldap

[blizzz]

Seems to be an LDAP config issue, please check your bases.

[MorrisJobke]

Could this one be catched a bit more nicely? To avoid such strange errors in the logs (because a wrong configuration should not lead to exceptions like this IMO).

[buttle]

Hi,
I've checked my config again. All tests in the wizard pass Ok.
We can login and use groups defined in the DIT without any problem.

I've noticed that every login generates two log entries (sometimes just one)

Error | PHP | Invalid argument supplied for foreach() at /var/www/nextcloud/apps/user_ldap/lib/Access.php#1855 | 2018-02-01T13:14:18+0100
Error | PHP | Invalid argument supplied for foreach() at /var/www/nextcloud/apps/user_ldap/lib/Access.php#1855 | 2018-02-01T13:14:18+0100

I also see these ocasionally

Error | PHP | ldap_search(): Partial search results returned: Sizelimit exceeded at /var/www/nextcloud/apps/user_ldap/lib/LDAP.php#293 | 2018-02-01T13:11:49+0100
Error | PHP | ldap_search(): Partial search results returned: Sizelimit exceeded at /var/www/nextcloud/apps/user_ldap/lib/LDAP.php#293 | 2018-02-01T13:11:32+0100

If you tell me how, I'll be pleased to provide more info.

Thanks.

[buttle]

Hi,
Just updated to nextcloud 13.0.0

Error | PHP | Invalid argument supplied for foreach() at /var/www/nextcloud/apps/user_ldap/lib/Access.php#1913 | 2018-02-06T14:51:58+0100
Error | PHP | Invalid argument supplied for foreach() at /var/www/nextcloud/apps/user_ldap/lib/Access.php#1913 | 2018-02-06T14:51:58+0100

I have removed the "Default password policy DN" policy I use (which seemed to test ok), and the error has stopped!
I hope that helps debug this.

Cheers.

[blizzz]

@GitHubUser4234 any chance you could look into it?

[GitHubUser4234]

Somehow this didn't trigger error logs in NC 12.0.0, but since I now upgraded to NC 13, I found the error, too. Fixed it in #9360