140 lines
3.5 KiB
PHP
140 lines
3.5 KiB
PHP
<?php
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namespace Sakura;
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/**
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* Global permissions handler.
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*
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* @package Sakura
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* @author Julian van de Groep <me@flash.moe>
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*/
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class Perms
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{
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/**
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* SITE permission mode, used for general permissions.
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*/
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const SITE = 'permissions\permissions_site';
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/**
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* MANAGE permission mode, used for site management actions.
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*/
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const MANAGE = 'permissions\permissions_manage';
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/**
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* FORUM permission mode, used per forum.
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*/
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const FORUM = 'forum_permissions\forum_perms';
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/**
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* The table containing the permissions.
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*
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* @var string
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*/
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protected $table = '';
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/**
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* The column containing the permissions.
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*
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* @var string
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*/
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protected $column = '';
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/**
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* Constructor.
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*
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* @param string $mode One of the modes above.
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*/
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public function __construct($mode)
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{
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$this->mode($mode);
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}
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/**
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* Set a permission mode.
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*
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* @param string $mode One of the modes above.
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*/
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public function mode($mode)
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{
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// Split the mode variable
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$mode = explode('\\', $mode);
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// Assign $table, $column and $selectors
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$this->table = $mode[0];
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$this->column = $mode[1];
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}
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/**
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* Compare a permission flag.
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*
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* @param int $flag The permission flag.
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* @param int $perm The permissions of the user.
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*
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* @return bool Success indicator.
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*/
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public function check($flag, $perm)
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{
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return ($flag & $perm) > 0;
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}
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/**
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* Get the permissions from a rank.
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*
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* @param int $rid The ID of the rank in question.
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* @param array $conditions Additional SQL conditions.
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* @param int $perm A permission flag to append to.
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*
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* @return int A permission flag.
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*/
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public function rank($rid, $conditions = [], $perm = 0)
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{
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// Merge rank id and additional conditions
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$conditions = array_merge(['rank_id' => [$rid, '='], 'user_id' => [0, '=']], $conditions);
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// Fetch from the db
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$get = Database::fetch($this->table, false, $conditions);
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// Check if anything was returned
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if ($get && array_key_exists($this->column, $get) && $get['rank_id']) {
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// Perform a bitwise OR
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$perm = $perm | bindec((string) $get[$this->column]);
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}
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// Return the value
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return $perm;
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}
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/**
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* Get the permissions from a user.
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*
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* @param int $uid The ID of the user in question.
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* @param array $conditions Additional SQL conditions.
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* @param int $perm A permission flag to append to.
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*
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* @return int A permission flag.
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*/
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public function user($uid, $conditions = [], $perm = 0)
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{
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// Create a user object
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$user = User::construct($uid);
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// Get data from ranks
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foreach (array_keys($user->ranks) as $rank) {
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$perm = $perm | $this->rank($rank, $conditions, $perm);
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}
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// Merge user id and additional conditions
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$conditions = array_merge(['user_id' => [$uid, '='], 'rank_id' => [0, '=']], $conditions);
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// Fetch from the db
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$get = Database::fetch($this->table, false, $conditions);
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// Check if anything was returned
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if ($get && array_key_exists($this->column, $get) && $get['user_id']) {
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// Perform a bitwise OR
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$perm = $perm | bindec((string) $get[$this->column]);
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}
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// Return the value
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return $perm;
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}
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}
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