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280 lines
No EOL
7.8 KiB
PHP
280 lines
No EOL
7.8 KiB
PHP
<?php
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/***************************************************************************
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* auth.php
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* -------------------
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* begin : Saturday, Feb 13, 2001
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* copyright : (C) 2001 The phpBB Group
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* email : support@phpbb.com
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*
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* $Id$
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*
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*
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***************************************************************************/
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/***************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*
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***************************************************************************/
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/*
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Possible options to send to auth (not all are functional yet!):
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* If you include a type then a specific lookup will
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be done and the single result returned
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* If you set type to ALL an array of all auth types
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will be returned
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* If you provide a forum_id a specific lookup on that
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forum will be done
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* If you set forum_id to LIST_ALL an array of all
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forums to which the user has access of type will be returned
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<- used for index and search? (type VIEW and READ respectively)
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* If you set forum_id to LIST_ALL and type to ALL a
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multidimensional array containing the auth permissions
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for all types and all forums for that user is returned
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* If you set $userdata to ALL, then the permissions of all
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users listed in the auth_access table will be returned for
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the given type and forum_id <- use to check for moderators?
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All results are returned as associative arrays, even
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when a single auth type is specified
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*/
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function auth($type, $forum_id, $userdata, $f_access = -1)
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{
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global $db;
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switch($type)
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{
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case ALL:
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$a_sql = "auth_view, auth_read, auth_post, auth_reply, auth_edit, auth_delete, auth_votecreate, auth_vote";
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$auth_fields = array("auth_view", "auth_read", "auth_post", "auth_reply", "auth_edit", "auth_delete", "auth_votecreate", "auth_vote");
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break;
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case VIEW:
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$a_sql = "auth_view";
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$auth_fields = array("auth_view");
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break;
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case READ:
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$a_sql = "auth_read";
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$auth_fields = array("auth_read");
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break;
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case POST:
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$a_sql = "auth_post";
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$auth_fields = array("auth_post");
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break;
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case REPLY:
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$a_sql = "auth_reply";
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$auth_fields = array("auth_reply");
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break;
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case EDIT:
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$a_sql = "auth_edit";
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$auth_fields = array("auth_edit");
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break;
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case DELETE:
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$a_sql = "auth_delete";
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$auth_fields = array("auth_delete");
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break;
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case VOTECREATE:
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$a_sql = "auth_votecreate";
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$auth_fields = array("auth_votecreate");
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break;
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case VOTE:
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$a_sql = "auth_vote";
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$auth_fields = array("auth_vote");
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break;
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default:
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break;
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}
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//
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// If f_access has been passed, or auth
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// is needed to return an array of forums
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// then we need to pull the auth information
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// on the given forum (or all forums)
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//
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if($f_access == -1 || $forum_id == LIST_ALL)
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{
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$forum_match_sql = ($forum_id != LIST_ALL) ? "WHERE forum_id = $forum_id" : "";
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$sql = "SELECT $a_sql
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FROM ".AUTH_FORUMS_TABLE."
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$forum_match_sql";
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$af_result = $db->sql_query($sql);
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if($forum_id != LIST_ALL)
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{
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$f_access = $db->sql_fetchrow($af_result);
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}
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else
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{
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$f_access_rows = $db->sql_fetchrowset($af_result);
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}
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}
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//
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// If the user isn't logged on then
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// all we need do is check if the forum
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// has the type set to ALL, if yes then
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// they're good to go, if not then they
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// are denied access
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//
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if(!$userdata['session_logged_in'])
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{
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if($forum_id != LIST_ALL)
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{
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for($i = 0; $i < count($f_access); $i++)
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{
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$auth_user[$auth_fields[$i]] = ($f_access[$auth_fields[$i]] == ALL) ? true : false;
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}
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}
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else
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{
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$auth_user_list = array();
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for($i = 0; $i < count($auth_forum_rows); $i++)
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{
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for($j = 0; $j < count($f_access); $j++)
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{
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$auth_user_list[][$auth_fields[$j]] = ($f_access_rows[$i][$auth_fields[$j]] == ALL) ? true : false;
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}
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}
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}
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}
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else
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{
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$forum_match_sql = ($forum_id != LIST_ALL) ? "AND ( aa.forum_id = $forum_id OR aa.forum_id = " . ALL . ")" : "";
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$sql = "SELECT $a_sql, auth_mod, auth_admin, g.single_user
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FROM ".AUTH_ACCESS_TABLE." aa, " . USER_GROUP_TABLE. " ug, " . GROUPS_TABLE. " g
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WHERE ug.user_id = ".$userdata['user_id']. "
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AND g.group_id = ug.group_id
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AND aa.group_id = ug.group_id
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$forum_match_sql";
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$au_result = $db->sql_query($sql);
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$u_access = $db->sql_fetchrowset($au_result);
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for($i = 0; $i < count($auth_fields); $i++)
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{
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$key = $auth_fields[$i];
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$value = $f_access[$key];
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//
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// If the user is logged on and the forum
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// type is either ALL or REG then the user
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// has access
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//
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if($value == ALL || $value == REG)
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{
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$auth_user[$key] = true;
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}
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else
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{
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//
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// If the type if ACL, MOD or ADMIN
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// then we need to see if the user has
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// specific permissions to do whatever it
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// is they want to do ... to do this
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// we pull relevant information for the user
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// (and any groups they belong to)
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//
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$single_user = false;
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//
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// Now we compare the users access level
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// against the forums We assume here that
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// a moderator and admin automatically have
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// access to an ACL forum, similarly we assume
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// admins meet an auth requirement of MOD
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//
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// The access level assigned to a single user
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// automatically takes precedence over any
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// levels granted by that user being a member
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// of a multi-user usergroup, eg. a user
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// who is banned from a forum won't gain
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// access to it even if they belong to a group
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// which has access (and vice versa). This
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// check is done via the single_user check
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//
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switch($value)
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{
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case ACL:
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for($j = 0; $j < count($u_access); $j++)
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{
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if(!$single_user)
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{
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$auth_user[$key] = $auth_user[$key] || $u_access[$j]['user_auth'] || $u_access[$i]['auth_mod'] || $u_access[$j]['auth_admin'];
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$single_user = $u_access[$j]['single_user'];
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}
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}
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break;
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case MOD:
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for($j = 0; $j < count($u_access); $j++)
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{
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if(!$single_user)
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{
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$auth_user[$key] = $auth_user[$key] || $u_access[$j]['auth_mod'] || $u_access[$j]['auth_admin'];
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$single_user = $u_access[$j]['single_user'];
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}
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}
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break;
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case ADMIN:
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for($j = 0; $j < count($u_access); $j++)
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{
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if(!$single_user)
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{
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$auth_user[$key] = $auth_user[$key] || $u_access[$j]['auth_admin'];
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$single_user = $u_access[$j]['single_user'];
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}
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}
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break;
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default:
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$auth_user[$auth_fields[$i]] = false;
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break;
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}
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}
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}
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$single_user = false;
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for($j = 0; $j < count($u_access); $j++)
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{
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if(!$single_user)
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{
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$auth_user['auth_mod'] = $auth_user['auth_mod'] || $u_access[$j]['auth_mod'];
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$single_user = $u_access[$j]['single_user'];
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}
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}
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$single_user = false;
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for($j = 0; $j < count($u_access); $j++)
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{
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if(!$single_user)
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{
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$auth_user['auth_admin'] = $auth_user['auth_admin'] || $u_access[$j]['auth_admin'];
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$single_user = $u_access[$j]['single_user'];
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}
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}
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}
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//
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// This currently only returns true or false
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// however it will also return an array if a listing
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// of all forums to which a user has access was requested.
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//
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return ( ($forum_id != LIST_ALL) ? $auth_user : $auth_user_list );
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}
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?>
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