groups / lib / wp / class-groups-wordpress.php

class-groups-wordpress.php in Groups – Memberships and Access Control 1.10.1, at lib/wp/class-groups-wordpress.php

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1	<?php
2	/**
3	* class-groups-wordpress.php
4	*
5	* Copyright (c) "kento" Karim Rahimpur www.itthinx.com
6	*
7	* This code is released under the GNU General Public License.
8	* See COPYRIGHT.txt and LICENSE.txt.
9	*
10	* This code is distributed in the hope that it will be useful,
11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13	* GNU General Public License for more details.
14	*
15	* This header and all notices must be kept intact.
16	*
17	* @author Karim Rahimpur
18	* @package groups
19	* @since groups 1.0.0
20	*/
21
22	if ( !defined( 'ABSPATH' ) ) {
23	exit;
24	}
25
26	/**
27	* WordPress capabilities integration.
28	*/
29	class Groups_WordPress {
30
31	/**
32	* Hook into actions to extend user capabilities.
33	*
34	* @todo We might want to keep up with new capabilities when added, so
35	* that others don't have to add these explicitly to Groups when they
36	* add them to WordPress. Currently there's no hook for when a capability
37	* is added and checking this in any other way is too costly.
38	*/
39	public static function init() {
40	// args: string $result, Groups_User $groups_user, string $capability
41	add_filter( 'groups_user_can', array( __CLASS__, 'groups_user_can' ), 10, 3 );
42	add_filter( 'user_has_cap', array( __CLASS__, 'user_has_cap' ), 10, 3 );
43	}
44
45	/**
46	* Extends Groups user capability with its WP_User capability.
47	*
48	* @param string $result
49	* @param Groups_User $groups_user
50	* @param string $capability
51	*/
52	public static function groups_user_can( $result, $groups_user, $capability ) {
53	if ( !$result ) {
54	// Check if the capability exists, otherwise this will
55	// produce a deprecation warning "Usage of user levels by plugins
56	// and themes is deprecated", not because we actually use a
57	// deprecated user level, but because it doesn't exist.
58	if ( Groups_Capability::read_by_capability( $capability ) ) {
59	$result = user_can( $groups_user->user->ID, $capability );
60	}
61	}
62	return $result;
63	}
64
65	/**
66	* Extend user capabilities with Groups user capabilities.
67	*
68	* @param array $allcaps the capabilities the user has
69	* @param array $caps the requested capabilities
70	* @param array $args capability context which can provide the requested capability as $args[0], the user ID as $args[1] and the related object's ID as $args[2]
71	*/
72	public static function user_has_cap( $allcaps, $caps, $args ) {
73	$user_id = isset( $args[1] ) ? $args[1] : null;
74	$groups_user = new Groups_User( $user_id );
75	if ( is_array( $caps ) ) {
76	// we need to deactivate this because invoking $groups_user->can()
77	// would trigger this same function and we would end up
78	// in an infinite loop
79	remove_filter( 'user_has_cap', array( __CLASS__, 'user_has_cap' ), 10, 3 );
80	foreach( $caps as $cap ) {
81	if ( $groups_user->can( $cap ) ) {
82	$allcaps[$cap] = true;
83	}
84	}
85	add_filter( 'user_has_cap', array( __CLASS__, 'user_has_cap' ), 10, 3 );
86	}
87	return $allcaps;
88	}
89
90	/**
91	* Adds WordPress capabilities to Groups capabilities.
92	* Must be called explicitly.
93	* @see Groups_Controller::activate()
94	*/
95	public static function activate() {
96	self::refresh_capabilities();
97	}
98
99	/**
100	* Refreshes Groups capabilities based on WordPress capabilities.
101	* @return int number of capabilities added
102	*/
103	public static function refresh_capabilities() {
104	global $wp_roles;
105	$capabilities = array();
106	$count = 0;
107	if ( !isset( $wp_roles ) ) {
108	// just trigger initialization
109	get_role( 'administrator' );
110	}
111	$roles = $wp_roles->roles;
112	if ( is_array( $roles ) ) {
113	foreach ( $roles as $rolename => $atts ) {
114	if ( isset( $atts['capabilities'] ) && is_array( $atts['capabilities'] ) ) {
115	foreach ( $atts['capabilities'] as $capability => $value ) {
116	if ( !in_array( $capability, $capabilities ) ) {
117	$capabilities[] = $capability;
118	}
119	}
120	}
121	}
122	}
123	foreach ( $capabilities as $capability ) {
124	if ( !Groups_Capability::read_by_capability( $capability ) ) {
125	Groups_Capability::create( array( 'capability' => $capability ) );
126	$count++;
127	}
128	}
129	return $count;
130	}
131	}
132	Groups_WordPress::init();
133