[Feature Request]: LDAP module should be able to anonymous bind

[sunflowerbofh]

Is your feature request related to a problem? Please describe.

When an LDAP server works with anonymous bind only the LDAP module is not usable (throws errors, Login Failed...).

Describe the solution you'd like

Merging the pull request I will launch after this.

     }

•    if (! $ldapbind = @ldap_bind($connection, $ldap_username, $ldap_pass)) {
  

•        throw new Exception('Could not bind to LDAP: '.ldap_error($connection));
  

•    }
  

•    // TODO - this just "falls off the end" but the function states that it should return true or false
  

•    // unfortunately, one of the use cases for this function is wrong and *needs* for that failure mode to fire
  

•    // so I don't want to fix this right now.
  

•    // this method MODIFIES STATE on the passed-in $connection and just returns true or false (or, in this case, undefined)
  

•    // at the next refactor, this should be appropriately modified to be more consistent.
  

• }

•           if ( $ldap_username ) {
  

•                   if (! $ldapbind = @ldap_bind($connection, $ldap_username, $ldap_pass)) {
  

•                           throw new Exception('Could not bind to LDAP: '.ldap_error($connection));
  

•                   }
  

•                   // TODO - this just "falls off the end" but the function states that it should return true or false
  

•                   // unfortunately, one of the use cases for this function is wrong and *needs* for that failure mode to fire
  

•                   // so I don't want to fix this right now.
  

•                   // this method MODIFIES STATE on the passed-in $connection and just returns true or false (or, in this case, undefined)
  

•                   // at the next refactor, this should be appropriately modified to be more consistent.
  

•           } else {
  

•                   if (! $ldapbind = @ldap_bind($connection )) {
  

•                           throw new Exception('Could not bind to LDAP: '.ldap_error($connection));
  

•                   }
  

•           }
  

•   }
  

Describe alternatives you've considered

Not using anonymous bind (but we need it for other applications as well)

Additional context

Feel free to test with active directory as we have none.

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