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