<?php function authenticate_success($user_record, $login_initial = false, $interactive = false, $login_refresh = false) { $a = get_app(); $_SESSION['uid'] = $user_record['uid']; $_SESSION['theme'] = $user_record['theme']; $_SESSION['mobile-theme'] = get_pconfig($user_record['uid'], 'system', 'mobile_theme'); $_SESSION['authenticated'] = 1; $_SESSION['page_flags'] = $user_record['page-flags']; $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $user_record['nickname']; $_SESSION['my_address'] = $user_record['nickname'] . '@' . substr($a->get_baseurl(),strpos($a->get_baseurl(),'://')+3); $_SESSION['addr'] = $_SERVER['REMOTE_ADDR']; $a->user = $user_record; if($interactive) { if($a->user['login_date'] === '0000-00-00 00:00:00') { $_SESSION['return_url'] = 'profile_photo/new'; $a->module = 'profile_photo'; info( t("Welcome ") . $a->user['username'] . EOL); info( t('Please upload a profile photo.') . EOL); } else info( t("Welcome back ") . $a->user['username'] . EOL); } $member_since = strtotime($a->user['register_date']); if(time() < ($member_since + ( 60 * 60 * 24 * 14))) $_SESSION['new_member'] = true; else $_SESSION['new_member'] = false; if(strlen($a->user['timezone'])) { date_default_timezone_set($a->user['timezone']); $a->timezone = $a->user['timezone']; } $master_record = $a->user; if((x($_SESSION,'submanage')) && intval($_SESSION['submanage'])) { $r = q("select * from user where uid = %d limit 1", intval($_SESSION['submanage']) ); if(count($r)) $master_record = $r[0]; } $r = q("SELECT `uid`,`username`,`nickname` FROM `user` WHERE `password` = '%s' AND `email` = '%s' AND `account_removed` = 0 ", dbesc($master_record['password']), dbesc($master_record['email']) ); if($r && count($r)) $a->identities = $r; else $a->identities = array(); $r = q("select `user`.`uid`, `user`.`username`, `user`.`nickname` from manage INNER JOIN user on manage.mid = user.uid where `user`.`account_removed` = 0 and `manage`.`uid` = %d", intval($master_record['uid']) ); if($r && count($r)) $a->identities = array_merge($a->identities,$r); if($login_initial) logger('auth_identities: ' . print_r($a->identities,true), LOGGER_DEBUG); if($login_refresh) logger('auth_identities refresh: ' . print_r($a->identities,true), LOGGER_DEBUG); $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1", intval($_SESSION['uid'])); if(count($r)) { $a->contact = $r[0]; $a->cid = $r[0]['id']; $_SESSION['cid'] = $a->cid; } header('X-Account-Management-Status: active; name="' . $a->user['username'] . '"; id="' . $a->user['nickname'] .'"'); if($login_initial || $login_refresh) { $l = get_browser_language(); q("UPDATE `user` SET `login_date` = '%s', `language` = '%s' WHERE `uid` = %d", dbesc(datetime_convert()), dbesc($l), intval($_SESSION['uid']) ); // Set the login date for all identities of the user q("UPDATE `user` SET `login_date` = '%s' WHERE `password` = '%s' AND `email` = '%s' AND `account_removed` = 0", dbesc(datetime_convert()), dbesc($master_record['password']), dbesc($master_record['email']) ); } if($login_initial) { call_hooks('logged_in', $a->user); if(($a->module !== 'home') && isset($_SESSION['return_url'])) goaway($a->get_baseurl() . '/' . $_SESSION['return_url']); } } function can_write_wall(&$a,$owner) { static $verified = 0; if((! (local_user())) && (! (remote_user()))) return false; $uid = local_user(); if(($uid) && ($uid == $owner)) { return true; } if(remote_user()) { // use remembered decision and avoid a DB lookup for each and every display item // DO NOT use this function if there are going to be multiple owners // We have a contact-id for an authenticated remote user, this block determines if the contact // belongs to this page owner, and has the necessary permissions to post content if($verified === 2) return true; elseif($verified === 1) return false; else { $cid = 0; if(is_array($_SESSION['remote'])) { foreach($_SESSION['remote'] as $visitor) { if($visitor['uid'] == $owner) { $cid = $visitor['cid']; break; } } } if(! $cid) return false; $r = q("SELECT `contact`.*, `user`.`page-flags` FROM `contact` INNER JOIN `user` on `user`.`uid` = `contact`.`uid` WHERE `contact`.`uid` = %d AND `contact`.`id` = %d AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0 AND `user`.`blockwall` = 0 AND `readonly` = 0 AND ( `contact`.`rel` IN ( %d , %d ) OR `user`.`page-flags` = %d ) LIMIT 1", intval($owner), intval($cid), intval(CONTACT_IS_SHARING), intval(CONTACT_IS_FRIEND), intval(PAGE_COMMUNITY) ); if(count($r)) { $verified = 2; return true; } else { $verified = 1; } } } return false; } function permissions_sql($owner_id,$remote_verified = false,$groups = null) { $local_user = local_user(); $remote_user = remote_user(); /** * Construct permissions * * default permissions - anonymous user */ $sql = " AND allow_cid = '' AND allow_gid = '' AND deny_cid = '' AND deny_gid = '' "; /** * Profile owner - everything is visible */ if(($local_user) && ($local_user == $owner_id)) { $sql = ''; } /** * Authenticated visitor. Unless pre-verified, * check that the contact belongs to this $owner_id * and load the groups the visitor belongs to. * If pre-verified, the caller is expected to have already * done this and passed the groups into this function. */ elseif($remote_user) { if(! $remote_verified) { $r = q("SELECT id FROM contact WHERE id = %d AND uid = %d AND blocked = 0 LIMIT 1", intval($remote_user), intval($owner_id) ); if(count($r)) { $remote_verified = true; $groups = init_groups_visitor($remote_user); } } if($remote_verified) { $gs = '<<>>'; // should be impossible to match if(is_array($groups) && count($groups)) { foreach($groups as $g) $gs .= '|<' . intval($g) . '>'; } /*$sql = sprintf( " AND ( allow_cid = '' OR allow_cid REGEXP '<%d>' ) AND ( deny_cid = '' OR NOT deny_cid REGEXP '<%d>' ) AND ( allow_gid = '' OR allow_gid REGEXP '%s' ) AND ( deny_gid = '' OR NOT deny_gid REGEXP '%s') ", intval($remote_user), intval($remote_user), dbesc($gs), dbesc($gs) );*/ $sql = sprintf( " AND ( NOT (deny_cid REGEXP '<%d>' OR deny_gid REGEXP '%s') AND ( allow_cid REGEXP '<%d>' OR allow_gid REGEXP '%s' OR ( allow_cid = '' AND allow_gid = '') ) ) ", intval($remote_user), dbesc($gs), intval($remote_user), dbesc($gs) ); } } return $sql; } function item_permissions_sql($owner_id,$remote_verified = false,$groups = null) { $local_user = local_user(); $remote_user = remote_user(); /** * Construct permissions * * default permissions - anonymous user */ $sql = " AND `item`.allow_cid = '' AND `item`.allow_gid = '' AND `item`.deny_cid = '' AND `item`.deny_gid = '' AND `item`.private = 0 "; /** * Profile owner - everything is visible */ if($local_user && ($local_user == $owner_id)) { $sql = ''; } /** * Authenticated visitor. Unless pre-verified, * check that the contact belongs to this $owner_id * and load the groups the visitor belongs to. * If pre-verified, the caller is expected to have already * done this and passed the groups into this function. */ elseif($remote_user) { if(! $remote_verified) { $r = q("SELECT id FROM contact WHERE id = %d AND uid = %d AND blocked = 0 LIMIT 1", intval($remote_user), intval($owner_id) ); if(count($r)) { $remote_verified = true; $groups = init_groups_visitor($remote_user); } } if($remote_verified) { $gs = '<<>>'; // should be impossible to match if(is_array($groups) && count($groups)) { foreach($groups as $g) $gs .= '|<' . intval($g) . '>'; } $sql = sprintf( /*" AND ( private = 0 OR ( private in (1,2) AND wall = 1 AND ( allow_cid = '' OR allow_cid REGEXP '<%d>' ) AND ( deny_cid = '' OR NOT deny_cid REGEXP '<%d>' ) AND ( allow_gid = '' OR allow_gid REGEXP '%s' ) AND ( deny_gid = '' OR NOT deny_gid REGEXP '%s'))) ", intval($remote_user), intval($remote_user), dbesc($gs), dbesc($gs) */ " AND ( `item`.private = 0 OR ( `item`.private in (1,2) AND `item`.`wall` = 1 AND ( NOT (`item`.deny_cid REGEXP '<%d>' OR `item`.deny_gid REGEXP '%s') AND ( `item`.allow_cid REGEXP '<%d>' OR `item`.allow_gid REGEXP '%s' OR ( `item`.allow_cid = '' AND `item`.allow_gid = ''))))) ", intval($remote_user), dbesc($gs), intval($remote_user), dbesc($gs) ); } } return $sql; } /* * Functions used to protect against Cross-Site Request Forgery * The security token has to base on at least one value that an attacker can't know - here it's the session ID and the private key. * In this implementation, a security token is reusable (if the user submits a form, goes back and resubmits the form, maybe with small changes; * or if the security token is used for ajax-calls that happen several times), but only valid for a certain amout of time (3hours). * The "typename" seperates the security tokens of different types of forms. This could be relevant in the following case: * A security token is used to protekt a link from CSRF (e.g. the "delete this profile"-link). * If the new page contains by any chance external elements, then the used security token is exposed by the referrer. * Actually, important actions should not be triggered by Links / GET-Requests at all, but somethimes they still are, * so this mechanism brings in some damage control (the attacker would be able to forge a request to a form of this type, but not to forms of other types). */ function get_form_security_token($typename = '') { $a = get_app(); $timestamp = time(); $sec_hash = hash('whirlpool', $a->user['guid'] . $a->user['prvkey'] . session_id() . $timestamp . $typename); return $timestamp . '.' . $sec_hash; } function check_form_security_token($typename = '', $formname = 'form_security_token') { if (!x($_REQUEST, $formname)) return false; $hash = $_REQUEST[$formname]; $max_livetime = 10800; // 3 hours $a = get_app(); $x = explode('.', $hash); if (time() > (IntVal($x[0]) + $max_livetime)) return false; $sec_hash = hash('whirlpool', $a->user['guid'] . $a->user['prvkey'] . session_id() . $x[0] . $typename); return ($sec_hash == $x[1]); } function check_form_security_std_err_msg() { return t('The form security token was not correct. This probably happened because the form has been opened for too long (>3 hours) before submitting it.') . EOL; } function check_form_security_token_redirectOnErr($err_redirect, $typename = '', $formname = 'form_security_token') { if (!check_form_security_token($typename, $formname)) { $a = get_app(); logger('check_form_security_token failed: user ' . $a->user['guid'] . ' - form element ' . $typename); logger('check_form_security_token failed: _REQUEST data: ' . print_r($_REQUEST, true), LOGGER_DATA); notice( check_form_security_std_err_msg() ); goaway($a->get_baseurl() . $err_redirect ); } } function check_form_security_token_ForbiddenOnErr($typename = '', $formname = 'form_security_token') { if (!check_form_security_token($typename, $formname)) { $a = get_app(); logger('check_form_security_token failed: user ' . $a->user['guid'] . ' - form element ' . $typename); logger('check_form_security_token failed: _REQUEST data: ' . print_r($_REQUEST, true), LOGGER_DATA); header('HTTP/1.1 403 Forbidden'); killme(); } } // 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; }}