WP Crontrol - Version 0.2

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Developer	scompt
Plugin	WP Crontrol
Version	0.2
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COPYING +280 -0
readme.txt +47 -0
wp-crontrol.php +381 -0

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readme.txt ADDED Viewed

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1	+ === WP-Crontrol ===
2	+ Contributors: scompt
3	+ Donate link: http://scompt.com/projects/wp-crontrol
4	+ Tags: admin, cron, plugin, control
5	+ Requires at least: 2.1
6	+ Tested up to: 2.3
7	+ Stable tag: 0.2
8	+
9	+ WP-Crontrol lets you take control over what's happening in the WP-Cron system.
10	+
11	+ == Description ==
12	+
13	+ WP-Crontrol lets you take control over what's happening in the WP-Cron system.
14	+
15	+ == Installation ==
16	+
17	+ 1. Upload the `wp-crontrol` directory to the `/wp-content/plugins/` directory
18	+ 1. Activate the plugin through the 'Plugins' menu in WordPress
19	+ 1. Goto the Options->Crontrol panel to add some new cron schedules.
20	+ 1. Goto the Manage->Crontrol panel to see what cron entries are scheduled and to add some new ones.
21	+
22	+ == Frequently Asked Questions ==
23	+
24	+ = How do I ask a frequently asked question? =
25	+
26	+ Email [me](mailto:scompt@scompt.com).
27	+
28	+ == Screenshots ==
29	+
30	+ 1. None yet
31	+
32	+ == Future Plans ==
33	+
34	+ * Make better
35	+
36	+ == Version History ==
37	+
38	+ = Version 0.1 =
39	+
40	+ * Super basic, look at what's in WP-Cron functionality.
41	+
42	+ = Version 0.2 =
43	+
44	+ * Fully documented the code.
45	+ * Fixed the bug that the activate action wouldn't be run if the plugin wasn't in a subdirectory.
46	+ * Now will play nicely in case any other plugins specify additional cron schedules.
47	+ * Minor cosmetic fixes.

wp-crontrol.php ADDED Viewed

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1	+ <?php
2	+ /*
3	+ * Plugin Name: WP-Crontrol
4	+ * Plugin URI: http://www.scompt.com/projects/wp-crontrol
5	+ * Description: WP-Crontrol lets you take control over what's happening in the WP-Cron system.
6	+ * Author: Edward Dale
7	+ * Version: 0.2
8	+ * Author URI: http://www.scompt.com
9	+ */
10	+
11	+ /**
12	+ * WP-Crontrol lets you take control over what's happening in the WP-Cron system.
13	+ *
14	+ * LICENSE
15	+ * This file is part of WP-Crontrol.
16	+ *
17	+ * WP-Crontrol is free software; you can redistribute it and/or
18	+ * modify it under the terms of the GNU General Public License
19	+ * as published by the Free Software Foundation; either version 2
20	+ * of the License, or (at your option) any later version.
21	+ *
22	+ * This program is distributed in the hope that it will be useful,
23	+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
24	+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25	+ * GNU General Public License for more details.
26	+ *
27	+ * You should have received a copy of the GNU General Public License
28	+ * along with this program; if not, write to the Free Software
29	+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
30	+ *
31	+ * @package WP-Crontrol
32	+ * @author Edward Dale <scompt@scompt.com>
33	+ * @copyright Copyright 2007 Edward Dale
34	+ * @license http://www.gnu.org/licenses/gpl.txt GPL 2.0
35	+ * @version $Id: wp-crontrol.php 31774 2008-02-13 19:13:59Z scompt $
36	+ * @link http://www.scompt.com/projects/wp-crontrol
37	+ * @since 0.2
38	+ */
39	+ class Crontrol {
40	+
41	+ /**
42	+ * Hook onto all of the actions and filters needed by the plugin.
43	+ */
44	+ function Crontrol() {
45	+ if( function_exists('add_action') ) {
46	+ add_action('init', array(&$this, 'init'));
47	+ add_action('init', array(&$this, 'handle_posts'));
48	+ add_action('admin_menu', array(&$this, 'admin_menu'));
49	+
50	+ // Make sure the activation works from subdirectories as well as
51	+ // directly in the plugin directory.
52	+ $activate_action = str_replace(ABSPATH.PLUGINDIR.'/', 'activate_', __FILE__);
53	+ add_action($activate_action, array(&$this, 'activate'));
54	+
55	+ add_filter('cron_schedules', array(&$this, 'cron_schedules'));
56	+ add_action('wp_ajax_delete-sched', array(&$this, 'handle_ajax'));
57	+ add_action('wp_ajax_delete-cron', array(&$this, 'handle_ajax'));
58	+ }
59	+ }
60	+
61	+ /**
62	+ * Run using the 'init' action.
63	+ */
64	+ function init() {
65	+ load_plugin_textdomain('crontrol', PLUGINDIR.'/wp-crontrol/gettext');
66	+ }
67	+
68	+ /**
69	+ * Run using the 'admin_print_scripts' action. Added in the 'admin_menu'
70	+ * hook.
71	+ */
72	+ function scripts() {
73	+ wp_enqueue_script( 'listman');
74	+ }
75	+
76	+ /**
77	+ * Handles any ajax requests made by the plugin. Run using
78	+ * the 'wp_ajax_*' actions.
79	+ */
80	+ function handle_ajax() {
81	+ switch( $_POST['action'] ) {
82	+ case 'delete-sched':
83	+ if( !current_user_can('manage_options') ) die('-1');
84	+ $to_delete = $_POST['id'];
85	+ $this->delete_schedule($to_delete);
86	+ exit('1');
87	+ break;
88	+ case 'delete-cron':
89	+ if( !current_user_can('manage_options') ) die('-1');
90	+ break;
91	+ }
92	+ }
93	+
94	+ /**
95	+ * Handles any POSTs made by the plugin. Run using the 'init' action.
96	+ */
97	+ function handle_posts() {
98	+ if( isset($_POST['new_cron']) ) {
99	+ if( !current_user_can('manage_options') ) die('You are not allowed to add new cron events.');
100	+ wp_schedule_event(time(), $_POST['schedule'], $_POST['hookname']);
101	+
102	+ } else if( isset($_POST['new_schedule']) ) {
103	+ if( !current_user_can('manage_options') ) die('You are not allowed to add new cron schedules.');
104	+ check_admin_referer("new-sched");
105	+ $name = $_POST['internal_name'];
106	+ $interval = $_POST['interval'];
107	+ $display = $_POST['display_name'];
108	+ $this->add_schedule($name, $interval, $display);
109	+ wp_redirect('options-general.php?page=crontrol_admin_options_page');
110	+
111	+ } else if( isset($_GET['action']) && $_GET['action']=='delete-sched') {
112	+ if( !current_user_can('manage_options') ) die('You are not allowed to delete cron schedules.');
113	+ $id = $_GET['id'];
114	+ check_admin_referer("delete-sched_$id");
115	+ $this->delete_schedule($id);
116	+ wp_redirect('options-general.php?page=crontrol_admin_options_page');
117	+ }
118	+ }
119	+
120	+ /**
121	+ * Adds a new custom cron schedule.
122	+ *
123	+ * @param string $name The internal name of the schedule
124	+ * @param int $interval The interval between executions of the new schedule
125	+ * @param string $display The display name of the schedule
126	+ */
127	+ function add_schedule($name, $interval, $display) {
128	+ $old_scheds = get_option('crontrol_schedules');
129	+ $old_scheds[$name] = array('interval'=>$interval, 'display'=>$display);
130	+ update_option('crontrol_schedules', $old_scheds);
131	+ }
132	+
133	+ /**
134	+ * Deletes a custom cron schedule.
135	+ *
136	+ * @param string $name The internal_name of the schedule to delete.
137	+ */
138	+ function delete_schedule($name) {
139	+ $scheds = get_option('crontrol_schedules');
140	+ unset($scheds[$name]);
141	+ update_option('crontrol_schedules', $scheds);
142	+ }
143	+
144	+ /**
145	+ * Sets up the plugin environment upon first activation.
146	+ *
147	+ * Run using the 'activate_' action.
148	+ */
149	+ function activate() {
150	+ $extra_scheds = array('twicedaily'=>array('interval'=>43200, 'display'=>'Twice Daily'));
151	+ add_option('crontrol_schedules', $extra_scheds);
152	+ }
153	+
154	+ /**
155	+ * Adds options & management pages to the admin menu.
156	+ *
157	+ * Run using the 'admin_menu' action.
158	+ */
159	+ function admin_menu() {
160	+ $page = add_options_page('Crontrol', 'Crontrol', 'manage_options', 'crontrol_admin_options_page', array(&$this, 'admin_options_page') );
161	+ add_action("admin_print_scripts-$page", array(&$this, 'scripts') );
162	+
163	+ $page = add_management_page('Crontrol', "Crontrol", 'manage_options', 'crontrol_admin_manage_page', array(&$this, 'admin_manage_page') );
164	+ }
165	+
166	+ /**
167	+ * Gives WordPress the plugin's set of cron schedules.
168	+ *
169	+ * Called by the 'cron_schedules' filter.
170	+ *
171	+ * @param array $scheds The current cron schedules. Usually an empty array.
172	+ * @return array The existing cron schedules along with the plugin's schedules.
173	+ */
174	+ function cron_schedules($scheds) {
175	+ $new_scheds = get_option('crontrol_schedules');
176	+ return array_merge($new_scheds, $scheds);
177	+ }
178	+
179	+ /**
180	+ * Displays the options page for the plugin.
181	+ */
182	+ function admin_options_page() {
183	+ $schedules = wp_get_schedules();
184	+ $custom_schedules = get_option('crontrol_schedules');
185	+ $custom_keys = array_keys($custom_schedules);
186	+ uasort($schedules, create_function('$a,$b', 'return $a["interval"]-$b["interval"];'));
187	+
188	+ ?>
189	+ <div class="wrap">
190	+ <h2>Cron Schedules (<a href="#new">add new</a>)</h2>
191	+ <p></p>
192	+ <div id="ajax-response"></div>
193	+ <table class="widefat" id="the-list">
194	+ <thead>
195	+ <tr>
196	+ <th>Name</th>
197	+ <th>Interval</th>
198	+ <th>Display Name</th>
199	+ <th>Actions</th>
200	+ </tr>
201	+ </thead>
202	+ <tbody>
203	+ <?php
204	+ $class = "";
205	+ foreach( $schedules as $name=>$data ) {
206	+ echo "<tr id=\"sched-$name\" class=\"$class\">";
207	+ echo "<td>$name</td>";
208	+ echo "<td>{$data['interval']} (".$this->time_since(time(), time()+$data['interval']).")</td>";
209	+ echo "<td>{$data['display']}</td>";
210	+ if( in_array($name, $custom_keys) ) {
211	+ echo "<td><a href='" . wp_nonce_url( "options-general.php?page=crontrol_admin_options_page&action=delete-sched&id=$name", 'delete-sched_' . $name ) . "' onclick=\"return deleteSomething( 'sched', '$name', '" . js_escape(sprintf( __("You are about to delete the schedule '%s'.\n'OK' to delete, 'Cancel' to stop." ), $name)) . "' );\" class='delete'>".__( 'Delete' )."</a></td>";
212	+ }
213	+ echo "</tr>";
214	+ $class = empty($class)?"alternate":"";
215	+ }
216	+
217	+ ?>
218	+ </tbody>
219	+ </table>
220	+ </div>
221	+ <div class="wrap narrow">
222	+ <a name="new" id="new"></a>
223	+ <h2>Add new cron schedule</h2>
224	+
225	+ <form method="post" action="options-general.php?page=crontrol_admin_options_page">
226	+ <table width="100%" cellspacing="2" cellpadding="5" class="editform">
227	+ <tbody>
228	+ <tr>
229	+ <th width="33%" valign="top" scope="row"><label for="internal_name">Internal name:</label></th>
230	+ <td width="67%"><input type="text" size="40" value="" id="internal_name" name="internal_name"/></td>
231	+ </tr>
232	+ <tr>
233	+ <th width="33%" valign="top" scope="row"><label for="interval">Interval:</label></th>
234	+ <td width="67%"><input type="text" size="40" value="" id="interval" name="interval"/></td>
235	+ </tr>
236	+ <tr>
237	+ <th width="33%" valign="top" scope="row"><label for="display_name">Display name:</label></th>
238	+ <td width="67%"><input type="text" size="40" value="" id="display_name" name="display_name"/></td>
239	+ </tr>
240	+ </tbody></table>
241	+ <p class="submit"><input id="schedadd-submit" type="submit" value="Add Cron Schedule »" name="new_schedule"/></p>
242	+ <?php wp_nonce_field('new-sched') ?>
243	+ </form>
244	+ </div>
245	+ <?php
246	+ }
247	+
248	+ /**
249	+ * Displays the manage page for the plugin.
250	+ */
251	+ function admin_manage_page() {
252	+ $crons = _get_cron_array();
253	+ $schedules = wp_get_schedules();
254	+
255	+ ?>
256	+ <div class="wrap">
257	+ <h2>WP-Cron Entries (<a href="#new">add new</a>)</h2>
258	+ <p></p>
259	+ <table class="widefat">
260	+ <thead>
261	+ <tr>
262	+ <th>Hook Name</th>
263	+ <th>Next Run</th>
264	+ <th>Recurrence</th>
265	+ <th>Actions</th>
266	+ </tr>
267	+ </thead>
268	+ <tbody>
269	+ <?php
270	+ $class = "";
271	+ foreach( $crons as $time=>$cron ) {
272	+ foreach( $cron as $hook=>$data) {
273	+ $data = array_shift($data);
274	+ echo "<tr class=\"$class\">";
275	+ echo "<td>$hook</td>";
276	+ echo "<td>".strftime("%D %T", $time)." (".$this->time_since(time(), $time).")</td>";
277	+ echo "<td>{$data['interval']} (".$this->time_since(time(), time()+$data['interval']).")</td>";
278	+ echo "<td></td>";
279	+ echo "</tr>";
280	+ $class = empty($class)?"alternate":"";
281	+ }
282	+ }
283	+ ?>
284	+ </tbody>
285	+ </table>
286	+ </div>
287	+ <div class="wrap narrow">
288	+ <a name="new" id="new"></a>
289	+ <h2>Add new cron entry</h2>
290	+ <form method="post">
291	+ <table width="100%" cellspacing="2" cellpadding="5" class="editform">
292	+ <tbody><tr>
293	+ <th width="33%" valign="top" scope="row"><label for="hookname">Hook name:</label></th>
294	+ <td width="67%"><input type="text" size="40" value="" id="hookname" name="hookname"/></td>
295	+ </tr>
296	+ <tr>
297	+ <th valign="top" scope="row"><label for="schedule">Entry schedule:</label></th>
298	+ <td>
299	+ <select class="postform" name="schedule">
300	+ <?php
301	+ foreach( $schedules as $sched_name=>$sched_data ) {
302	+ echo "<option value=\"$sched_name\">{$sched_data['display']} (".$this->time_since(time(), time()+$sched_data['interval']).")</option>\n";
303	+ }
304	+ ?>
305	+ </select>
306	+ </td>
307	+ </tr>
308	+ </tbody></table>
309	+ <p class="submit"><input type="submit" value="Add Cron Entry »" name="new_cron"/></p>
310	+ </form>
311	+ </div>
312	+ <?php
313	+ }
314	+
315	+ /**
316	+ * Pretty-prints the difference in two times.
317	+ *
318	+ * @param time $older_date
319	+ * @param time $newer_date
320	+ * @return string The pretty time_since value
321	+ * @link http://binarybonsai.com/code/timesince.txt
322	+ */
323	+ function time_since($older_date, $newer_date) {
324	+ // array of time period chunks
325	+ $chunks = array(
326	+ array(60 * 60 * 24 * 365 , 'year'),
327	+ array(60 * 60 * 24 * 30 , 'month'),
328	+ array(60 * 60 * 24 * 7, 'week'),
329	+ array(60 * 60 * 24 , 'day'),
330	+ array(60 * 60 , 'hour'),
331	+ array(60 , 'minute'),
332	+ array( 1 , 'second'),
333	+ );
334	+
335	+ // difference in seconds
336	+ $since = $newer_date - $older_date;
337	+ if( $since <= 0 ) {
338	+ return "now";
339	+ }
340	+
341	+ // we only want to output two chunks of time here, eg:
342	+ // x years, xx months
343	+ // x days, xx hours
344	+ // so there's only two bits of calculation below:
345	+
346	+ // step one: the first chunk
347	+ for ($i = 0, $j = count($chunks); $i < $j; $i++)
348	+ {
349	+ $seconds = $chunks[$i][0];
350	+ $name = $chunks[$i][1];
351	+
352	+ // finding the biggest chunk (if the chunk fits, break)
353	+ if (($count = floor($since / $seconds)) != 0)
354	+ {
355	+ break;
356	+ }
357	+ }
358	+
359	+ // set output var
360	+ $output = ($count == 1) ? '1 '.$name : "$count {$name}s";
361	+
362	+ // step two: the second chunk
363	+ if ($i + 1 < $j)
364	+ {
365	+ $seconds2 = $chunks[$i + 1][0];
366	+ $name2 = $chunks[$i + 1][1];
367	+
368	+ if (($count2 = floor(($since - ($seconds * $count)) / $seconds2)) != 0)
369	+ {
370	+ // add to output var
371	+ $output .= ($count2 == 1) ? ', 1 '.$name2 : ", $count2 {$name2}s";
372	+ }
373	+ }
374	+
375	+ return $output;
376	+ }
377	+ }
378	+
379	+ // Get this show on the road
380	+ new Crontrol();
381	+ ?>