From fd9b506c2f19750bdea532b63c6ff28424ec5a7b Mon Sep 17 00:00:00 2001 From: Friendika Date: Mon, 27 Dec 2010 14:59:26 -0800 Subject: [PATCH] Add sample external authentication plugin (ldap) --- addon/README | 2 + addon/ldapauth.php | 124 ++++++++++++++++++++++++++++++++++ addon/randplace/randplace.php | 2 +- include/auth.php | 40 +++++++---- 4 files changed, 152 insertions(+), 16 deletions(-) create mode 100644 addon/ldapauth.php diff --git a/addon/README b/addon/README index 8d5088f783..18843ceab8 100644 --- a/addon/README +++ b/addon/README @@ -52,6 +52,8 @@ Current hooks: 'username' => the supplied username 'password' => the supplied password 'authenticated' => set this to non-zero to authenticate the user. + 'user_record' => successful authentication must also return a valid user record from the database + 'logged_in' - called after a user has successfully logged in. $b contains the $a->user array diff --git a/addon/ldapauth.php b/addon/ldapauth.php new file mode 100644 index 0000000000..2ec30caad7 --- /dev/null +++ b/addon/ldapauth.php @@ -0,0 +1,124 @@ +config['ldapauth']['ldap_server'] = 'host.example.com'; + * ...etc. + * + */ + + + +function ldapauth_install() { + register_hook('authenticate', 'addon/ldapauth/ldapauth.php', 'ldapauth_hook_authenticate'); +} + + +function ldapauth_uninstall() { + unregister_hook('authenticate', 'addon/ldapauth/ldapauth.php', 'ldapauth_hook_authenticate'); +} + + +function ldapauth_hook_authenticate($a,&$b) { + if(ldapauth_authenticate($b['username'],$b['password'])) { + $results = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1", + dbesc($b['username']) + ); + if(count($results)) { + $b['user_record'] = $results[0]; + $b['authenticated'] = 1; + } + } + return; +} + + +function ldapauth_authenticate($username,$password) { + + $ldap_server = get_config('ldapauth','ldap_server'); + $ldap_binddn = get_config('ldapauth','ldap_binddn'); + $ldap_bindpw = get_config('ldapauth','ldap_bindpw'); + $ldap_searchdn = get_config('ldapauth','ldap_searchdn'); + $ldap_userattr = get_config('ldapauth','ldap_userattr'); + $ldap_group = get_config('ldapauth','ldap_group'); + + if(! ((strlen($password)) + && (function_exists('ldap_connect')) + && (strlen($ldap_server)))) + return false; + + $connect = @ldap_connect($ldap_server); + + if(! $connect) + return false; + + @ldap_set_option($connect, LDAP_OPT_PROTOCOL_VERSION,3); + @ldap_set_option($connect, LDAP_OPT_REFERRALS, 0); + if((@ldap_bind($connect,$ldap_binddn,$ldap_bindpw)) === false) { + return false; + } + + $res = @ldap_search($connect,$ldap_searchdn, $ldap_userattr . '=' . $username); + + if(! $res) { + return false; + } + + $id = @ldap_first_entry($connect,$res); + + if(! $id) { + return false; + } + + $dn = @ldap_get_dn($connect,$id); + + if(! @ldap_bind($connect,$dn,$password)) + return false; + + if(! strlen($ldap_group)) + return true; + + $r = @ldap_compare($connect,$ldap_group,'member',$dn); + if ($r === -1) { + $err = @ldap_error($connect); + $eno = @ldap_errno($connect); + @ldap_close($connect); + + if ($eno === 32) { + logger("ldapauth: access control group Does Not Exist"); + return false; + } + elseif ($eno === 16) { + logger('ldapauth: membership attribute does not exist in access control group'); + return false; + } + else { + logger('ldapauth: error: ' . $err); + return false; + } + } + elseif ($r === false) { + @ldap_close($connect); + return false; + } + + return true; +} diff --git a/addon/randplace/randplace.php b/addon/randplace/randplace.php index 2e1bd33ac2..2f0ff038b6 100644 --- a/addon/randplace/randplace.php +++ b/addon/randplace/randplace.php @@ -110,7 +110,7 @@ function randplace_post_hook($a, &$item) { $cities = array(); $zones = timezone_identifiers_list(); foreach($zones as $zone) { - if(strpos($zone,'/')) + if((strpos($zone,'/')) && (! stristr($zone,'US/')) && (! stristr($zone,'Etc/'))) $cities[] = str_replace('_', ' ',substr($zone,strpos($zone,'/') + 1)); } diff --git a/include/auth.php b/include/auth.php index bc77e5dbc0..d2bcb68dc8 100644 --- a/include/auth.php +++ b/include/auth.php @@ -132,16 +132,18 @@ else { } if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') { + $record = null; $addon_auth = array( - 'name' => trim($_POST['openid_url']), + 'username' => trim($_POST['openid_url']), 'password' => trim($_POST['password']), - 'authenticated' => 0 + 'authenticated' => 0, + 'user_record' => null ); /** * - * A plugin indicates successful login by setting 'authenticated' to non-zero value + * A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record * Plugins should never set 'authenticated' except to indicate success - as hooks may be chained * and later plugins should not interfere with an earlier one that succeeded. * @@ -149,8 +151,12 @@ else { call_hooks('authenticate', $addon_auth); - if(! $addon_auth['authenticated']) { - // process login request + if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) { + $record = $addon_auth['user_record']; + } + else { + + // process normal login request $r = q("SELECT * FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' ) AND `password` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1", @@ -158,21 +164,25 @@ else { dbesc(trim($_POST['openid_url'])), dbesc($encrypted) ); - if(($r === false) || (! count($r))) { - notice( t('Login failed.') . EOL ); - goaway($a->get_baseurl()); - } + if(count($r)) + $record = $r[0]; } - $_SESSION['uid'] = $r[0]['uid']; - $_SESSION['theme'] = $r[0]['theme']; + if((! $record) || (! count($record))) { + logger('authenticate: failed login attempt: ' . trim($_POST['openid_url'])); + notice( t('Login failed.') . EOL ); + goaway($a->get_baseurl()); + } + + $_SESSION['uid'] = $record['uid']; + $_SESSION['theme'] = $record['theme']; $_SESSION['authenticated'] = 1; - $_SESSION['page_flags'] = $r[0]['page-flags']; - $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['nickname']; + $_SESSION['page_flags'] = $record['page-flags']; + $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $record['nickname']; $_SESSION['addr'] = $_SERVER['REMOTE_ADDR']; - notice( t("Welcome back ") . $r[0]['username'] . EOL); - $a->user = $r[0]; + notice( t("Welcome back ") . $record['username'] . EOL); + $a->user = $record; if(strlen($a->user['timezone'])) date_default_timezone_set($a->user['timezone']);