stream / classes / class-plugin.php

class-plugin.php in Stream – Activity Log & Audit Trail 3.6.1, at classes/class-plugin.php

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1	<?php
2	/**
3	* Initializes plugin
4	*
5	* @package WP_Stream;
6	*/
7
8	namespace WP_Stream;
9
10	/**
11	* Class Plugin
12	*/
13	class Plugin {
14	/**
15	* Plugin version number.
16	*
17	* TODO Maybe pass this as a constructor dependency?
18	*
19	* @const string
20	*/
21	const VERSION = '3.6.1';
22
23	/**
24	* WP-CLI command
25	*
26	* @const string
27	*/
28	const WP_CLI_COMMAND = 'stream';
29
30	/**
31	* Holds and manages WordPress Admin configurations.
32	*
33	* @var Admin
34	*/
35	public $admin;
36
37	/**
38	* Holds and manages alerts.
39	*
40	* @var Alerts
41	*/
42	public $alerts;
43
44	/**
45	* Holds and manages alerts lists.
46	*
47	* @var Alerts_List
48	*/
49	public $alerts_list;
50
51	/**
52	* Holds and manages connectors
53	*
54	* @var Connectors
55	*/
56	public $connectors;
57
58	/**
59	* Holds and manages DB connections.
60	*
61	* @var DB
62	*/
63	public $db;
64
65	/**
66	* Holds and manages records.
67	*
68	* @var Log
69	*/
70	public $log;
71
72	/**
73	* Stores and manages WordPress settings.
74	*
75	* @var Settings
76	*/
77	public $settings;
78
79	/**
80	* Process DB migrations.
81	*
82	* @var Install
83	*/
84	public $install;
85
86	/**
87	* URLs and Paths used by the plugin
88	*
89	* @var array
90	*/
91	public $locations = array();
92
93	/**
94	* Class constructor
95	*/
96	public function __construct() {
97	$locate = $this->locate_plugin();
98
99	$this->locations = array(
100	'plugin' => $locate['plugin_basename'],
101	'dir' => $locate['dir_path'],
102	'url' => $locate['dir_url'],
103	'inc_dir' => $locate['dir_path'] . 'includes/',
104	'class_dir' => $locate['dir_path'] . 'classes/',
105	);
106
107	spl_autoload_register( array( $this, 'autoload' ) );
108
109	// Load helper functions.
110	require_once $this->locations['inc_dir'] . 'functions.php';
111
112	// Load DB helper interface/class.
113	$driver_class = apply_filters( 'wp_stream_db_driver', '\WP_Stream\DB_Driver_WPDB' );
114	$driver = null;
115
116	if ( class_exists( $driver_class ) ) {
117	$driver = new $driver_class();
118	$this->db = new DB( $driver );
119	}
120
121	$error = false;
122	if ( ! $this->db ) {
123	$error = esc_html__( 'Stream: Could not load chosen DB driver.', 'stream' );
124	} elseif ( ! $driver instanceof DB_Driver ) {
125	$error = esc_html__( 'Stream: DB driver must implement DB Driver interface.', 'stream' );
126	}
127
128	if ( $error ) {
129	wp_die(
130	esc_html( $error ),
131	esc_html__( 'Stream DB Error', 'stream' )
132	);
133	}
134
135	// Load languages.
136	add_action( 'plugins_loaded', array( $this, 'i18n' ) );
137
138	// Load logger class.
139	$this->log = apply_filters( 'wp_stream_log_handler', new Log( $this ) );
140
141	// Load settings and connectors after widgets_init and before the default init priority.
142	add_action( 'init', array( $this, 'init' ), 9 );
143
144	// Add frontend indicator.
145	add_action( 'wp_head', array( $this, 'frontend_indicator' ) );
146
147	// Change DB driver after plugin loaded if any add-ons want to replace.
148	add_action( 'plugins_loaded', array( $this, 'plugins_loaded' ), 20 );
149
150	// Load admin area classes.
151	if ( is_admin() \|\| ( defined( 'WP_STREAM_DEV_DEBUG' ) && WP_STREAM_DEV_DEBUG ) \|\| ( defined( 'WP_CLI' ) && WP_CLI ) ) {
152	$this->admin = new Admin( $this );
153	$this->install = $driver->setup_storage( $this );
154	} elseif ( defined( 'DOING_CRON' ) && DOING_CRON ) {
155	$this->admin = new Admin( $this, $driver );
156	}
157
158	// Load WP-CLI command.
159	if ( defined( 'WP_CLI' ) && WP_CLI ) {
160	\WP_CLI::add_command( self::WP_CLI_COMMAND, 'WP_Stream\CLI' );
161	}
162	}
163
164	/**
165	* Autoloader for classes
166	*
167	* @param string $class Fully qualified classname to be loaded.
168	*/
169	public function autoload( $class ) {
170	if ( ! preg_match( '/^(?P<namespace>.+)\\\\(?P<autoload>[^\\\\]+)$/', $class, $matches ) ) {
171	return;
172	}
173
174	static $reflection;
175
176	if ( empty( $reflection ) ) {
177	$reflection = new \ReflectionObject( $this );
178	}
179
180	if ( $reflection->getNamespaceName() !== $matches['namespace'] ) {
181	return;
182	}
183
184	$autoload_name = $matches['autoload'];
185	$autoload_dir = \trailingslashit( $this->locations['class_dir'] );
186	$autoload_path = sprintf( '%sclass-%s.php', $autoload_dir, strtolower( str_replace( '_', '-', $autoload_name ) ) );
187
188	if ( is_readable( $autoload_path ) ) {
189	require_once $autoload_path;
190	}
191	}
192
193	/**
194	* Loads the translation files.
195	*
196	* @action plugins_loaded
197	*/
198	public function i18n() {
199	load_plugin_textdomain( 'stream', false, dirname( $this->locations['plugin'] ) . '/languages/' );
200	}
201
202	/**
203	* Load Settings, Notifications, and Connectors
204	*
205	* @action init
206	*/
207	public function init() {
208	$this->settings = new Settings( $this );
209	$this->connectors = new Connectors( $this );
210	$this->alerts = new Alerts( $this );
211	$this->alerts_list = new Alerts_List( $this );
212
213	}
214
215	/**
216	* Displays an HTML comment in the frontend head to indicate that Stream is activated,
217	* and which version of Stream is currently in use.
218	*
219	* @action wp_head
220	*
221	* @return string\|void An HTML comment, or nothing if the value is filtered out.
222	*/
223	public function frontend_indicator() {
224	/* translators: Localization not needed */
225	$comment = sprintf( 'Stream WordPress user activity plugin v%s', esc_html( $this->get_version() ) );
226
227	/**
228	* Filter allows the HTML output of the frontend indicator comment
229	* to be altered or removed, if desired.
230	*
231	* @return string The content of the HTML comment
232	*/
233	$comment = apply_filters( 'wp_stream_frontend_indicator', $comment );
234
235	if ( ! empty( $comment ) ) {
236	echo sprintf( "<!-- %s -->\n", esc_html( $comment ) ); // xss ok.
237	}
238	}
239
240	/**
241	* Version of plugin_dir_url() which works for plugins installed in the plugins directory,
242	* and for plugins bundled with themes.
243	*
244	* @return array
245	*/
246	private function locate_plugin() {
247	$dir_url = trailingslashit( plugins_url( '', dirname( __FILE__ ) ) );
248	$dir_path = plugin_dir_path( dirname( __FILE__ ) );
249	$dir_basename = basename( $dir_path );
250	$plugin_basename = trailingslashit( $dir_basename ) . $dir_basename . '.php';
251
252	return compact( 'dir_url', 'dir_path', 'dir_basename', 'plugin_basename' );
253	}
254
255	/**
256	* Getter for the version number.
257	*
258	* @return string
259	*/
260	public function get_version() {
261	return self::VERSION;
262	}
263
264	/**
265	* Change plugin database driver in case driver plugin loaded after stream
266	*/
267	public function plugins_loaded() {
268	// Load DB helper interface/class.
269	$driver_class = apply_filters( 'wp_stream_db_driver', '\WP_Stream\DB_Driver_WPDB' );
270
271	if ( class_exists( $driver_class ) ) {
272	$driver = new $driver_class();
273	$this->db = new DB( $driver );
274	}
275	}
276
277	/**
278	* Returns true if Stream is network activated, otherwise false
279	*
280	* @return bool
281	*/
282	public function is_network_activated() {
283
284	$is_network_activated = false;
285
286	if ( $this->is_mustuse() ) {
287	$is_network_activated = true;
288	} else {
289	if ( ! function_exists( 'is_plugin_active_for_network' ) ) {
290	require_once ABSPATH . '/wp-admin/includes/plugin.php';
291	}
292	$is_network_activated = is_plugin_active_for_network( $this->locations['plugin'] );
293	}
294
295	/**
296	* Filter allows the network activated detection to be overridden.
297	*
298	* @param string $is_network_activated Whether the plugin is network activated.
299	* @param WP_Stream\Plugin $plugin The stream plugin object.
300	*/
301	return apply_filters( 'wp_stream_is_network_activated', $is_network_activated, $this );
302	}
303
304	/**
305	* Returns true if Stream is a must-use plugin, otherwise false
306	*
307	* @return bool
308	*/
309	public function is_mustuse() {
310	$stream_php = trailingslashit( WPMU_PLUGIN_DIR ) . $this->locations['plugin'];
311
312	if ( file_exists( $stream_php ) && class_exists( 'WP_Stream\Plugin' ) ) {
313	return true;
314	}
315
316	return false;
317	}
318	}
319