Add sample external authentication plugin (ldap)
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Friendika
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2e19af4b1e
commit
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4 changed files with 152 additions and 16 deletions
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@ -52,6 +52,8 @@ Current hooks:
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'username' => the supplied username
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'password' => the supplied password
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'authenticated' => set this to non-zero to authenticate the user.
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'user_record' => successful authentication must also return a valid user record from the database
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'logged_in' - called after a user has successfully logged in.
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$b contains the $a->user array
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124
addon/ldapauth.php
Normal file
124
addon/ldapauth.php
Normal file
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@ -0,0 +1,124 @@
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<?php
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/**
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* Friendika addon
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*
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* Module: LDAP Authenticate
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*
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* Authenticate a user against an LDAP directory
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* Useful for Windows Active Directory and other LDAP-based organisations
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* to maintain a single password across the organisation.
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*
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* Optionally authenticates only if a member of a given group in the directory.
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*
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* The person must have registered with Friendika using the normal registration
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* procedures in order to have a Friendika user record, contact, and profile.
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*
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* Note when using with Windows Active Directory: you may need to set TLS_CACERT in your site
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* ldap.conf file to the signing cert for your LDAP server.
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*
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* The required configuration options for this module may be set in the .htconfig.php file
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* e.g.:
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*
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* $a->config['ldapauth']['ldap_server'] = 'host.example.com';
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* ...etc.
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*
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*/
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function ldapauth_install() {
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register_hook('authenticate', 'addon/ldapauth/ldapauth.php', 'ldapauth_hook_authenticate');
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}
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function ldapauth_uninstall() {
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unregister_hook('authenticate', 'addon/ldapauth/ldapauth.php', 'ldapauth_hook_authenticate');
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}
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function ldapauth_hook_authenticate($a,&$b) {
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if(ldapauth_authenticate($b['username'],$b['password'])) {
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$results = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1",
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dbesc($b['username'])
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);
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if(count($results)) {
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$b['user_record'] = $results[0];
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$b['authenticated'] = 1;
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}
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}
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return;
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}
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function ldapauth_authenticate($username,$password) {
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$ldap_server = get_config('ldapauth','ldap_server');
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$ldap_binddn = get_config('ldapauth','ldap_binddn');
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$ldap_bindpw = get_config('ldapauth','ldap_bindpw');
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$ldap_searchdn = get_config('ldapauth','ldap_searchdn');
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$ldap_userattr = get_config('ldapauth','ldap_userattr');
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$ldap_group = get_config('ldapauth','ldap_group');
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if(! ((strlen($password))
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&& (function_exists('ldap_connect'))
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&& (strlen($ldap_server))))
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return false;
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$connect = @ldap_connect($ldap_server);
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if(! $connect)
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return false;
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@ldap_set_option($connect, LDAP_OPT_PROTOCOL_VERSION,3);
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@ldap_set_option($connect, LDAP_OPT_REFERRALS, 0);
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if((@ldap_bind($connect,$ldap_binddn,$ldap_bindpw)) === false) {
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return false;
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}
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$res = @ldap_search($connect,$ldap_searchdn, $ldap_userattr . '=' . $username);
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if(! $res) {
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return false;
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}
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$id = @ldap_first_entry($connect,$res);
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if(! $id) {
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return false;
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}
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$dn = @ldap_get_dn($connect,$id);
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if(! @ldap_bind($connect,$dn,$password))
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return false;
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if(! strlen($ldap_group))
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return true;
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$r = @ldap_compare($connect,$ldap_group,'member',$dn);
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if ($r === -1) {
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$err = @ldap_error($connect);
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$eno = @ldap_errno($connect);
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@ldap_close($connect);
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if ($eno === 32) {
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logger("ldapauth: access control group Does Not Exist");
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return false;
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}
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elseif ($eno === 16) {
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logger('ldapauth: membership attribute does not exist in access control group');
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return false;
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}
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else {
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logger('ldapauth: error: ' . $err);
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return false;
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}
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}
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elseif ($r === false) {
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@ldap_close($connect);
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return false;
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}
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return true;
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}
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@ -110,7 +110,7 @@ function randplace_post_hook($a, &$item) {
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$cities = array();
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$zones = timezone_identifiers_list();
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foreach($zones as $zone) {
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if(strpos($zone,'/'))
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if((strpos($zone,'/')) && (! stristr($zone,'US/')) && (! stristr($zone,'Etc/')))
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$cities[] = str_replace('_', ' ',substr($zone,strpos($zone,'/') + 1));
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}
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@ -132,16 +132,18 @@ else {
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}
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if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
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$record = null;
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$addon_auth = array(
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'name' => trim($_POST['openid_url']),
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'username' => trim($_POST['openid_url']),
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'password' => trim($_POST['password']),
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'authenticated' => 0
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'authenticated' => 0,
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'user_record' => null
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);
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/**
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*
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* A plugin indicates successful login by setting 'authenticated' to non-zero value
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* A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record
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* Plugins should never set 'authenticated' except to indicate success - as hooks may be chained
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* and later plugins should not interfere with an earlier one that succeeded.
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*
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@ -149,8 +151,12 @@ else {
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call_hooks('authenticate', $addon_auth);
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if(! $addon_auth['authenticated']) {
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// process login request
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if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) {
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$record = $addon_auth['user_record'];
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}
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else {
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// process normal login request
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$r = q("SELECT * FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
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AND `password` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1",
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@ -158,21 +164,25 @@ else {
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dbesc(trim($_POST['openid_url'])),
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dbesc($encrypted)
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);
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if(($r === false) || (! count($r))) {
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if(count($r))
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$record = $r[0];
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}
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if((! $record) || (! count($record))) {
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logger('authenticate: failed login attempt: ' . trim($_POST['openid_url']));
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notice( t('Login failed.') . EOL );
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goaway($a->get_baseurl());
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}
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}
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$_SESSION['uid'] = $r[0]['uid'];
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$_SESSION['theme'] = $r[0]['theme'];
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$_SESSION['uid'] = $record['uid'];
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$_SESSION['theme'] = $record['theme'];
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$_SESSION['authenticated'] = 1;
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$_SESSION['page_flags'] = $r[0]['page-flags'];
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$_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['nickname'];
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$_SESSION['page_flags'] = $record['page-flags'];
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$_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $record['nickname'];
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$_SESSION['addr'] = $_SERVER['REMOTE_ADDR'];
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notice( t("Welcome back ") . $r[0]['username'] . EOL);
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$a->user = $r[0];
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notice( t("Welcome back ") . $record['username'] . EOL);
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$a->user = $record;
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if(strlen($a->user['timezone']))
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date_default_timezone_set($a->user['timezone']);
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