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External user authentication
============================
Authenticate user login against FTP, IMAP or SMB.
Passwords are not stored locally; authentication always happens against
the remote server.
It stores users and their display name in its own database table
`users_external`.
When modifying the `user_backends` configuration, you need to
update the database table's `backend` field, or your users will lose
their configured display name.
If something does not work, check the log file at `owncloud/data/owncloud.log`.
FTP
---
Authenticate ownCloud users against a FTP server.
### Configuration
You only need to supply the FTP host name or IP.
The second - optional - parameter determines if SSL should be used or not.
Add the following to `config.php`:
'user_backends' => array(
array(
'class' => 'OC_User_FTP',
'arguments' => array('127.0.0.1'),
),
),
To enable SSL connections via `ftps`, append a second parameter `true`:
'user_backends' => array(
array(
'class' => 'OC_User_FTP',
'arguments' => array('127.0.0.1', true),
),
),
### Dependencies
PHP automatically contains basic FTP support.
For SSL-secured FTP connections via ftps, the PHP [openssl extension][0]
needs to be activated.
[0]: http://php.net/openssl
IMAP
----
Authenticate ownCloud users against an IMAP server.
IMAP user and password need to be given for the ownCloud login
### Configuration
Add the following to your `config.php`:
'user_backends' => array(
array(
'class' => 'OC_User_IMAP',
'arguments' => array(
'{127.0.0.1:143/imap/readonly}',
),
),
),
This connects to the IMAP server on IP `127.0.0.1`, in readonly mode.
Read the [imap_open][0] PHP manual page to learn more about the allowed
parameters.
[0]: http://php.net/imap_open#refsect1-function.imap-open-parameters
### Dependencies
The PHP [IMAP extension][1] has to be activated.
[1]: http://php.net/imap
Samba
-----
Utilizes the `smbclient` executable to authenticate against a windows
network machine via SMB.
### Configuration
The only supported parameter is the hostname of the remote machine.
Add the following to your `config.php`:
'user_backends' => array(
array(
'class' => 'OC_User_SMB',
'arguments' => array('127.0.0.1'),
),
),
### Dependencies
The `smbclient` executable needs to be installed and accessible within `$PATH`.
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