vmario/yourls-ldap-auth
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Merge pull request #5 from davoaust/master

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Added groups based auth & directory searching with privileged account
This commit is contained in:
K3A 2015-05-18 22:49:14 +02:00
commit 24995f3e42
2 changed files with 38 additions and 1 deletions
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12
README.md
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@ -14,6 +14,10 @@ Usage
-----
When yourls-cas-plugin is enabled and user was not successfuly authenticated using data specified in yourls_user_passwords, an LDAP authentication attempt will be made. If LDAP authentication is successful, then you will immediately go to the admin interface.
You can also set a privileged account to search the LDAP directory with. This is useful for directories that don't allow anonymous binding.
Setting the groups settings will check the user is a member of that group before logging them in and storing their credentials. This check is only performed the first time they auth or when their password changes.
Configuration
-------------
@ -22,6 +26,14 @@ Configuration
* define( 'LDAPAUTH_BASE', 'dc=domain,dc=com' ) Base DN (location of users)
* define( 'LDAPAUTH_USERNAME_FIELD', 'uid') (optional) LDAP field name in which username is store
To use a privileged account for the user search:
* define( 'LDAPAUTH_SEARCH_USER', 'cn=your-user,dc=domain,dc=com' ) // (optional) Privileged user to search with
* define( 'LDAPAUTH_SEARCH_PASS', 'the-pass') // (optional) (only if LDAPAUTH_SEARCH_USER set) Privileged user pass
To check group membership before authenticating:
* define( 'LDAPAUTH_GROUP_ATTR', 'memberof' ) // (optional) LDAP groups attr
* define( 'LDAPAUTH_GROUP_REQ', 'the-group') // (only if LDAPAUTH_GROUP_REQ set) Group user must be in
Troubleshooting
---------------
* Check PHP error log usually at `/var/log/php.log`

27
plugin.php
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@ -80,7 +80,20 @@ function ldapauth_is_valid_user( $value ) {
$ldapConnection = ldap_connect(LDAPAUTH_HOST, LDAPAUTH_PORT);
if (!$ldapConnection) Die("Cannot connect to LDAP " . LDAPAUTH_HOST);
ldap_set_option($ldapConnection, LDAP_OPT_PROTOCOL_VERSION, 3);
$searchDn = ldap_search($ldapConnection, LDAPAUTH_BASE, LDAPAUTH_USERNAME_FIELD . "=" . $_REQUEST['username'] );
// Check if using a privileged user account to search
if (defined('LDAPAUTH_SEARCH_USER') && defined('LDAPAUTH_SEARCH_PASS')) {
if (!@ldap_bind($ldapConnection, LDAPAUTH_SEARCH_USER, LDAPAUTH_SEARCH_PASS)) {
die('Couldn\'t bind search user ' . LDAPAUTH_SEARCH_USER);
}
}
// Limit the attrs to the ones we need
$attrs = array('dn', LDAPAUTH_USERNAME_FIELD);
if (defined('LDAPAUTH_GROUP_ATTR'))
array_push($attrs, LDAPAUTH_GROUP_ATTR);
$searchDn = ldap_search($ldapConnection, LDAPAUTH_BASE, LDAPAUTH_USERNAME_FIELD . "=" . $_REQUEST['username'], $attrs );
if (!$searchDn) return $value;
$searchResult = ldap_get_entries($ldapConnection, $searchDn);
if (!$searchResult) return $value;
@ -92,6 +105,18 @@ function ldapauth_is_valid_user( $value ) {
// success?
if ($ldapSuccess)
{
// are we checking group auth?
if (defined('LDAPAUTH_GROUP_ATTR') && defined('LDAPAUTH_GROUP_REQ')) {
if (!array_key_exists(LDAPAUTH_GROUP_ATTR, $searchResult[0])) die('Not in any LDAP groups');
$in_group = false;
foreach($searchResult[0][LDAPAUTH_GROUP_ATTR] as $grps) {
if (strtolower($grps) == strtolower(LDAPAUTH_GROUP_REQ)) { $in_group = true; error_log("YESSS"); break; }
}
if (!$in_group) die('Not in admin group');
}
$username = $searchResult[0][LDAPAUTH_USERNAME_FIELD][0];
yourls_set_user($username);
global $yourls_user_passwords;