[turba] Contact View with ldap backend not working

[Philipp Faeustlin]

Hi list,

I try to setup an read-only ldap backend which is only searchable. My  
turba backend configuration works to the point where I can search for  
an entry and get some results displayed.

When I try to view, copy or download vcard on one of the results, I  
get an "Read error: (2) Protocol error"

My Horde Turba Version is 4.2.21 from pear.

My backend config look like this:
$cfgSources['localldap'] = array(
    'disabled' => false,
    'title' => "Co-Workers",
    'type' => 'ldap',
    'params' => array(
        'server' => 'ldaps://localhost',
        'port' => 636,
        'tls' => false,
        'root' => 'o=localhost,c=DE',
        'scope' => 'sub',
        'charset' => 'utf-8',
        'checkrequired' => false,
        'checkrequired_string' => ' ',
        'checksyntax' => false,
        'version' => 3,
        'sizelimit' => 3,
    ),
    'map' => array(
        '__key' => 'dn',
        'name' => 'cn',
        'email' => 'mail',
        'lastname' => 'sn',
        'company' => 'ou',
    ),
    'tabs' => array(
        'All' => array(
            'name',
            'email',
            'lastname',
            'company'
        )
    ),
    'search' => array(
        'name',
        'email',
        'lastname',
        'company'
    ),
    'strict' => array(
        'dn'
    ),
    'approximate' => array(
        'cn', 'sn'
    ),
    'export' => false,
    'browse' => false,
    'use_shares' => false,
    'all_shares' => false,
);

---

The horde global rights for this addressbook are show/view.

Where is my mistake, what is missing?

My horde.log is showing some PHP Error, perhaps they are related, but  
I don't know their meaning, or how to solve them:
-- horde.log --
2017-11-28T15:57:20+01:00 DEBUG: HORDE [turba] PHP ERROR: Declaration  
of Horde_Form_Type_country::init() should be compatible with  
Horde_Form_Type::init() [pid 13076 on line 0 of  
"/usr/share/pear/Horde/Form/Type.php"]
2017-11-28T15:57:20+01:00 DEBUG: HORDE [turba] PHP ERROR: Non-static  
method Horde_Form::getType() should not be called statically, assuming  
$this from incompatible context [pid 13076 on line 75 of  
"/var/www/webmail/turba/templates/browse/row.inc"]
2017-11-28T15:57:20+01:00 DEBUG: HORDE [turba] PHP ERROR: Only  
variables should be passed by reference [pid 13076 on line 75 of  
"/var/www/webmail/turba/templates/browse/row.inc"]
-- --
  Philipp Fäustlin
Universität Hohenheim