From fac61fa985a0227a1746a671c0e54adedc96ec48 Mon Sep 17 00:00:00 2001
From: ben <ben@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Fri, 15 Feb 2008 18:21:35 +0000
Subject: All kinds of object and database stuff

git-svn-id: https://code.elgg.org/elgg/trunk@44 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/access.php | 91 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 engine/lib/access.php

(limited to 'engine/lib/access.php')

diff --git a/engine/lib/access.php b/engine/lib/access.php
new file mode 100644
index 000000000..e704dfd5e
--- /dev/null
+++ b/engine/lib/access.php
@@ -0,0 +1,91 @@
+<?php
+
+	/**
+	 * Elgg access permissions
+	 * For users, objects, collections and all metadata
+	 * 
+	 * @package Elgg
+	 * @subpackage Core
+	 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
+	 * @author Curverider Ltd
+	 * @copyright Curverider Ltd 2008
+	 * @link http://elgg.org/
+	 */
+
+	/**
+	 * Get the list of access restrictions the given user is allowed to see on this site
+	 *
+	 * @uses get_access_array
+	 * @param int $user_id User ID; defaults to currently logged in user
+	 * @param int $site_id Site ID; defaults to current site 
+	 * @param boolean $flush If set to true, will refresh the access list from the database
+	 * @return string A list of access groups suitable for injection in an SQL call
+	 */
+		function get_access_list($user_id = 0, $site_id = 0, $flush = false) {
+			
+			global $CONFIG;
+			static $access_list;
+			
+			if (!isset($access_list))
+				$access_list = array();
+			
+			if ($user_id == 0) $user_id = $_SESSION['id'];
+			if ($site_id == 0) $site_id = $CONFIG->site_id;
+			$user_id = (int) $user_id;
+			$site_id = (int) $site_id;
+			
+			if (empty($access_list[$user_id]) || $flush == true) {
+				
+				$access_list[$user_id] = "(" . implode(",",get_access_array($user_id, $site_id, $flush)) . ")";
+				
+			}
+			
+			return $access_list[$user_id];
+			
+		}
+		
+	/**
+	 * Gets an array of access restrictions the given user is allowed to see on this site
+	 *
+	 * @param int $user_id User ID; defaults to currently logged in user
+	 * @param int $site_id Site ID; defaults to current site 
+	 * @param boolean $flush If set to true, will refresh the access list from the database
+	 * @return array An array of access groups suitable for injection in an SQL call
+	 */
+		function get_access_array($user_id = 0, $site_id = 0, $flush = false) {
+			
+			global $CONFIG;
+			static $access_array;
+			
+			if (!isset($access_array))
+				$access_array = array();
+			
+			if ($user_id == 0) $user_id = $_SESSION['id'];
+			if ($site_id == 0) $site_id = $CONFIG->site_id;
+			$user_id = (int) $user_id;
+			$site_id = (int) $site_id;
+			
+			if (empty($access_array[$user_id]) || $flush == true) {
+				
+				$query = "select am.access_group_id from {$CONFIG->dbprefix}access_group_membership am ";
+				$query .= " left join {$CONFIG->dbprefix}access_groups ag on ag.id = am.access_group_id ";
+				$query .= " where am.user_id = {$user_id} and (ag.site_id = {$site_id} or ag.site_id = 0)";
+				
+				$tmp_access_array = array(2);
+				if (isloggedin())
+					$tmp_access_array[] = 1;
+				
+				if ($groups = get_data($query)) {
+					foreach($groups as $group)
+						$tmp_access_array[] = $group->access_group_id;
+				}
+				
+				$access_array[$user_id] = $tmp_access_array;
+				
+			}
+			
+			return $access_array[$user_id];
+			
+		}
+
+?>
\ No newline at end of file
-- 
cgit v1.2.3