<?php
+
+require_once('include/security.php');
+require_once('include/datetime.php');
+
+function nuke_session() {
+ new_cookie(0); // make sure cookie is deleted on browser close, as a security measure
+
+ unset($_SESSION['authenticated']);
+ unset($_SESSION['uid']);
+ unset($_SESSION['visitor_id']);
+ unset($_SESSION['administrator']);
+ unset($_SESSION['cid']);
+ unset($_SESSION['theme']);
+ unset($_SESSION['mobile-theme']);
+ unset($_SESSION['page_flags']);
+ unset($_SESSION['submanage']);
+ unset($_SESSION['my_url']);
+ unset($_SESSION['my_address']);
+ unset($_SESSION['addr']);
+ unset($_SESSION['return_url']);
+}
+
+
// login/logout
-if((x($_SESSION,'authenticated')) && (! ($_POST['auth-params'] == 'login'))) {
- if($_POST['auth-params'] == 'logout' || $a->module == "logout") {
- unset($_SESSION['authenticated']);
- unset($_SESSION['uid']);
- unset($_SESSION['visitor_id']);
- unset($_SESSION['is_visitor']);
- unset($_SESSION['administrator']);
- unset($_SESSION['cid']);
- $_SESSION['sysmsg'] = "Logged out." . EOL;
- goaway($a->get_baseurl());
- }
- if(x($_SESSION,'uid')) {
- $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
- intval($_SESSION['uid']));
- if($r === NULL || (! count($r))) {
- goaway($a->get_baseurl());
- }
- $a->user = $r[0];
- if(strlen($a->user['timezone']))
- date_default_timezone_set($a->user['timezone']);
- if(x($a->user,'nickname'))
- $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['nickname'];
- else
- $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['uid'];
+if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) {
+
+ if(((x($_POST,'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) {
+
+ // process logout request
+ call_hooks("logging_out");
+ nuke_session();
+ info( t('Logged out.') . EOL);
+ goaway(z_root());
+ }
- $r = q("SELECT * FROM `contact` WHERE `uid` = %s AND `self` = 1 LIMIT 1",
- intval($_SESSION['uid']));
+ if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) {
+ $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
+ intval($_SESSION['visitor_id'])
+ );
if(count($r)) {
$a->contact = $r[0];
- $a->cid = $r[0]['id'];
- $_SESSION['cid'] = $a->cid;
+ }
+ }
+
+ if(x($_SESSION,'uid')) {
+
+ // already logged in user returning
+
+ $check = get_config('system','paranoia');
+ // extra paranoia - if the IP changed, log them out
+ if($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
+ logger('Session address changed. Paranoid setting in effect, blocking session. '
+ . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
+ nuke_session();
+ goaway(z_root());
+ }
+
+ $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
+ FROM `user` WHERE `uid` = %d AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
+ intval($_SESSION['uid'])
+ );
+ if(! count($r)) {
+ nuke_session();
+ goaway(z_root());
}
+
+ // Make sure to refresh the last login time for the user if the user
+ // stays logged in for a long time, e.g. with "Remember Me"
+ $login_refresh = false;
+ if(! x($_SESSION['last_login_date'])) {
+ $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
+ }
+ if( strcmp(datetime_convert('UTC','UTC','now - 12 hours'), $_SESSION['last_login_date']) > 0 ) {
+
+ $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
+ $login_refresh = true;
+ }
+ authenticate_success($r[0], false, false, $login_refresh);
}
}
else {
- unset($_SESSION['authenticated']);
- unset($_SESSION['uid']);
- unset($_SESSION['visitor_id']);
- unset($_SESSION['is_visitor']);
- unset($_SESSION['administrator']);
- unset($_SESSION['cid']);
- $encrypted = hash('whirlpool',trim($_POST['password']));
-
- if((x($_POST,'auth-params')) && $_POST['auth-params'] == 'login') {
- $r = q("SELECT * FROM `user`
- WHERE `email` = '%s' AND `password` = '%s' LIMIT 1",
- dbesc(trim($_POST['login-name'])),
- dbesc($encrypted));
- if(($r === false) || (! count($r))) {
- $_SESSION['sysmsg'] = 'Login failed.' . EOL ;
- goaway($a->get_baseurl());
+
+ if(isset($_SESSION)) {
+ nuke_session();
+ }
+
+ if((x($_POST,'password')) && strlen($_POST['password']))
+ $encrypted = hash('whirlpool',trim($_POST['password']));
+ else {
+ if((x($_POST,'openid_url')) && strlen($_POST['openid_url']) ||
+ (x($_POST,'username')) && strlen($_POST['username'])) {
+
+ $noid = get_config('system','no_openid');
+
+ $openid_url = trim((strlen($_POST['openid_url'])?$_POST['openid_url']:$_POST['username']) );
+
+ // validate_url alters the calling parameter
+
+ $temp_string = $openid_url;
+
+ // if it's an email address or doesn't resolve to a URL, fail.
+
+ if(($noid) || (strpos($temp_string,'@')) || (! validate_url($temp_string))) {
+ $a = get_app();
+ notice( t('Login failed.') . EOL);
+ goaway(z_root());
+ // NOTREACHED
+ }
+
+ // Otherwise it's probably an openid.
+
+ try {
+ require_once('library/openid.php');
+ $openid = new LightOpenID;
+ $openid->identity = $openid_url;
+ $_SESSION['openid'] = $openid_url;
+ $a = get_app();
+ $openid->returnUrl = $a->get_baseurl(true) . '/openid';
+ goaway($openid->authUrl());
+ } catch (Exception $e) {
+ notice( t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.').'<br /><br >'. t('The error message was:').' '.$e->getMessage());
+ }
+ // NOTREACHED
+ }
+ }
+
+ if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
+
+ $record = null;
+
+ $addon_auth = array(
+ 'username' => trim($_POST['username']),
+ 'password' => trim($_POST['password']),
+ 'authenticated' => 0,
+ 'user_record' => null
+ );
+
+ /**
+ *
+ * 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.
+ *
+ */
+
+ call_hooks('authenticate', $addon_auth);
+
+ if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) {
+ $record = $addon_auth['user_record'];
+ }
+ else {
+
+ // process normal login request
+
+ $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
+ FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' )
+ AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
+ dbesc(trim($_POST['username'])),
+ dbesc(trim($_POST['username'])),
+ dbesc($encrypted)
+ );
+ if(count($r))
+ $record = $r[0];
+ }
+
+ if((! $record) || (! count($record))) {
+ logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
+ notice( t('Login failed.') . EOL );
+ goaway(z_root());
}
- $_SESSION['uid'] = $r[0]['uid'];
- $_SESSION['admin'] = $r[0]['admin'];
- $_SESSION['authenticated'] = 1;
- if(x($r[0],'nickname'))
- $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['nickname'];
- else
- $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['uid'];
-
- $_SESSION['sysmsg'] = "Welcome back " . $r[0]['username'] . EOL;
- $a->user = $r[0];
- if(strlen($a->user['timezone']))
- date_default_timezone_set($a->user['timezone']);
-
- $r = q("SELECT * FROM `contact` WHERE `uid` = %s AND `self` = 1 LIMIT 1",
- intval($_SESSION['uid']));
- if(count($r)) {
- $a->cid = $r[0]['id'];
- $_SESSION['cid'] = $a->cid;
+
+ // If the user specified to remember the authentication, then change the cookie
+ // to expire after one year (the default is when the browser is closed).
+ // If the user did not specify to remember, change the cookie to expire when the
+ // browser is closed. The reason this is necessary is because if the user
+ // specifies to remember, then logs out and logs back in without specifying to
+ // remember, the old "remember" cookie may remain and prevent the session from
+ // expiring when the browser is closed.
+ //
+ // It seems like I should be able to test for the old cookie, but for some reason when
+ // I read the lifetime value from session_get_cookie_params(), I always get '0'
+ // (i.e. expire when the browser is closed), even when there's a time expiration
+ // on the cookie
+ if($_POST['remember']) {
+ new_cookie(31449600); // one year
+ }
+ else {
+ new_cookie(0); // 0 means delete on browser exit
}
+ // if we haven't failed up this point, log them in.
+ $_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
+ authenticate_success($record, true, true);
}
}
-// Returns an array of group id's this contact is a member of.
-// This array will only contain group id's related to the uid of this
-// DFRN contact. They are *not* neccessarily unique across the entire site.
-
-
-if(! function_exists('init_groups_visitor')) {
-function init_groups_visitor($contact_id) {
- $groups = array();
- $r = q("SELECT `gid` FROM `group_member`
- WHERE `contact-id` = %d ",
- intval($contact_id)
- );
- if(count($r)) {
- foreach($r as $rr)
- $groups[] = $rr['gid'];
- }
- return $groups;
-}}
-
+function new_cookie($time) {
+ $old_sid = session_id();
+ session_set_cookie_params("$time");
+ session_regenerate_id(false);
+ q("UPDATE session SET sid = '%s' WHERE sid = '%s'", dbesc(session_id()), dbesc($old_sid));
+}