349 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			PHP
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			349 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			PHP
		
	
	
		
			Executable File
		
	
	
	
	
| <?php
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| 
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| function authenticate_success($user_record, $login_initial = false, $interactive = false) {
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| 
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| 	$a = get_app();
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| 
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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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| 
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| 	$a->user = $user_record;
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| 
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| 	if($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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| 
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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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| 
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| 	$master_record = $a->user;	
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| 
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| 	if((x($_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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| 
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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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| 
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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,$r);
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| 
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| 	if($login_initial)
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| 		logger('auth_identities: ' . print_r($a->identities,true), LOGGER_DEBUG);
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| 
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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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| 
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| 	header('X-Account-Management-Status: active; name="' . $a->user['username'] . '"; id="' . $a->user['nickname'] .'"');
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| 
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| 	if($login_initial) {
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| 		$l = get_browser_language();
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| 
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| 		q("UPDATE `user` SET `login_date` = '%s', `language` = '%s' WHERE `uid` = %d LIMIT 1",
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| 			dbesc(datetime_convert()),
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| 			dbesc($l),
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| 			intval($_SESSION['uid'])
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| 		);
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| 
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| 		call_hooks('logged_in', $a->user);
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| 
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| 		if(($a->module !== 'home') && isset($_SESSION['return_url']))
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| 			goaway($a->get_baseurl() . '/' . $_SESSION['return_url']);
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| 	}
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| 
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| }
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| 
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| 
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| 
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| function can_write_wall(&$a,$owner) {
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| 
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| 	static $verified = 0;
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| 
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| 	if((! (local_user())) && (! (remote_user())))
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| 		return false;
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| 
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| 	$uid = local_user();
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| 
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| 	if(($uid) && ($uid == $owner)) {
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| 		return true;
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| 	}
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| 
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| 	if(remote_user()) {
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| 
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| 		// use remembered decision and avoid a DB lookup for each and every display item
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| 		// DO NOT use this function if there are going to be multiple owners
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| 
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| 		// We have a contact-id for an authenticated remote user, this block determines if the contact
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| 		// belongs to this page owner, and has the necessary permissions to post content
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| 
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| 		if($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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| 
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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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| 
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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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| 				$verified = 1;
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| 			}
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| 		}
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| 	}
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| 
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| 	return false;
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| }
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| 
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| 
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| function permissions_sql($owner_id,$remote_verified = false,$groups = null) {
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| 
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| 	$local_user = local_user();
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| 	$remote_user = remote_user();
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| 
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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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| 
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| 	$sql = " AND allow_cid = '' 
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| 			 AND allow_gid = '' 
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| 			 AND deny_cid  = '' 
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| 			 AND deny_gid  = '' 
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| 	";
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| 
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| 	/**
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| 	 * Profile owner - everything is visible
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| 	 */
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| 
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| 	if(($local_user) && ($local_user == $owner_id)) {
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| 		$sql = ''; 
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| 	}
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| 
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| 	/**
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| 	 * Authenticated visitor. Unless pre-verified, 
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| 	 * check that the contact belongs to this $owner_id
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| 	 * and load the groups the visitor belongs to.
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| 	 * If pre-verified, the caller is expected to have already
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| 	 * done this and passed the groups into this function.
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| 	 */
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| 
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| 	elseif($remote_user) {
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| 
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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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| 		
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| 			$gs = '<<>>'; // should be impossible to match
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| 
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| 			if(is_array($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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| 
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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 $sql;
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| }
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| 
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| 
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| function item_permissions_sql($owner_id,$remote_verified = false,$groups = null) {
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| 
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| 	$local_user = local_user();
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| 	$remote_user = remote_user();
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| 
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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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| 
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| 	$sql = " AND allow_cid = '' 
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| 			 AND allow_gid = '' 
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| 			 AND deny_cid  = '' 
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| 			 AND deny_gid  = '' 
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| 			 AND private = 0
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| 	";
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| 
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| 	/**
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| 	 * Profile owner - everything is visible
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| 	 */
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| 
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| 	if(($local_user) && ($local_user == $owner_id)) {
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| 		$sql = ''; 
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| 	}
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| 
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| 	/**
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| 	 * Authenticated visitor. Unless pre-verified, 
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| 	 * check that the contact belongs to this $owner_id
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| 	 * and load the groups the visitor belongs to.
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| 	 * If pre-verified, the caller is expected to have already
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| 	 * done this and passed the groups into this function.
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| 	 */
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| 
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| 	elseif($remote_user) {
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| 
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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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| 		
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| 			$gs = '<<>>'; // should be impossible to match
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| 
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| 			if(is_array($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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| 
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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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| 
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| 	return $sql;
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| }
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| 
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| 
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| /*
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|  * Functions used to protect against Cross-Site Request Forgery
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|  * The security token has to base on at least one value that an attacker can't know - here it's the session ID and the private key.
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|  * In this implementation, a security token is reusable (if the user submits a form, goes back and resubmits the form, maybe with small changes;
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|  * or if the security token is used for ajax-calls that happen several times), but only valid for a certain amout of time (3hours).
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|  * The "typename" seperates the security tokens of different types of forms. This could be relevant in the following case:
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|  *    A security token is used to protekt a link from CSRF (e.g. the "delete this profile"-link).
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|  *    If the new page contains by any chance external elements, then the used security token is exposed by the referrer.
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|  *    Actually, important actions should not be triggered by Links / GET-Requests at all, but somethimes they still are,
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|  *    so this mechanism brings in some damage control (the attacker would be able to forge a request to a form of this type, but not to forms of other types).
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|  */ 
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| function get_form_security_token($typename = '') {
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| 	$a = get_app();
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| 	
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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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| 	
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| 	return $timestamp . '.' . $sec_hash;
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| }
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| 
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| function check_form_security_token($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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| 	
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| 	$max_livetime = 10800; // 3 hours
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| 	
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| 	$a = get_app();
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| 	
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| 	$x = explode('.', $hash);
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| 	if (time() > (IntVal($x[0]) + $max_livetime)) return false;
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| 	
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| 	$sec_hash = hash('whirlpool', $a->user['guid'] . $a->user['prvkey'] . session_id() . $x[0] . $typename);
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| 	
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| 	return ($sec_hash == $x[1]);
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| }
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| 
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| function check_form_security_std_err_msg() {
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| 	return t('The form security token was not correct. This probably happened because the form has been opened for too long (>3 hours) before submitting it.') . EOL;
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| }
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| function check_form_security_token_redirectOnErr($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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| 	    $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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| 		header('HTTP/1.1 403 Forbidden');
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| 		killme();
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| 	}
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| }
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