~azzar1/unity/add-show-desktop-key

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
<?php
/**
*
* @package phpBB3
* @version $Id: cron.php,v 1.21 2007/10/05 14:30:06 acydburn Exp $
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/

/**
*/
define('IN_PHPBB', true);
define('IN_CRON', true);
$phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : './';
$phpEx = substr(strrchr(__FILE__, '.'), 1);
include($phpbb_root_path . 'common.' . $phpEx);

// Do not update users last page entry
$user->session_begin(false);
$auth->acl($user->data);

$cron_type = request_var('cron_type', '');
$use_shutdown_function = (@function_exists('register_shutdown_function')) ? true : false;

// Output transparent gif
header('Cache-Control: no-cache');
header('Content-type: image/gif');
header('Content-length: 43');

echo base64_decode('R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==');

// test without flush ;)
// flush();

//
if (!isset($config['cron_lock']))
{
	set_config('cron_lock', '0', true);
}

// make sure cron doesn't run multiple times in parallel
if ($config['cron_lock'])
{
	// if the other process is running more than an hour already we have to assume it
	// aborted without cleaning the lock
	$time = explode(' ', $config['cron_lock']);
	$time = $time[0];

	if ($time + 3600 >= time())
	{
		exit;
	}
}

define('CRON_ID', time() . ' ' . unique_id());

$sql = 'UPDATE ' . CONFIG_TABLE . "
	SET config_value = '" . $db->sql_escape(CRON_ID) . "'
	WHERE config_name = 'cron_lock' AND config_value = '" . $db->sql_escape($config['cron_lock']) . "'";
$db->sql_query($sql);

// another cron process altered the table between script start and UPDATE query so exit
if ($db->sql_affectedrows() != 1)
{
	exit;
}

/**
* Run cron-like action
* Real cron-based layer will be introduced in 3.2
*/
switch ($cron_type)
{
	case 'queue':

		if (time() - $config['queue_interval'] <= $config['last_queue_run'] || !file_exists($phpbb_root_path . 'cache/queue.' . $phpEx))
		{
			break;
		}

		// A user reported using the mail() function while using shutdown does not work. We do not want to risk that.
		if ($use_shutdown_function && !$config['smtp_delivery'])
		{
			$use_shutdown_function = false;
		}

		include_once($phpbb_root_path . 'includes/functions_messenger.' . $phpEx);
		$queue = new queue();

		if ($use_shutdown_function)
		{
			register_shutdown_function(array(&$queue, 'process'));
		}
		else
		{
			$queue->process();
		}

	break;

	case 'tidy_cache':

		if (time() - $config['cache_gc'] <= $config['cache_last_gc'] || !method_exists($cache, 'tidy'))
		{
			break;
		}

		if ($use_shutdown_function)
		{
			register_shutdown_function(array(&$cache, 'tidy'));
		}
		else
		{
			$cache->tidy();
		}

	break;

	case 'tidy_search':
		
		// Select the search method
		$search_type = basename($config['search_type']);

		if (time() - $config['search_gc'] <= $config['search_last_gc'] || !file_exists($phpbb_root_path . 'includes/search/' . $search_type . '.' . $phpEx))
		{
			break;
		}

		include_once("{$phpbb_root_path}includes/search/$search_type.$phpEx");

		// We do some additional checks in the module to ensure it can actually be utilised
		$error = false;
		$search = new $search_type($error);

		if ($error)
		{
			break;
		}

		if ($use_shutdown_function)
		{
			register_shutdown_function(array(&$search, 'tidy'));
		}
		else
		{
			$search->tidy();
		}

	break;

	case 'tidy_warnings':

		if (time() - $config['warnings_gc'] <= $config['warnings_last_gc'])
		{
			break;
		}

		include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);

		if ($use_shutdown_function)
		{
			register_shutdown_function('tidy_warnings');
		}
		else
		{
			tidy_warnings();
		}

	break;

	case 'tidy_database':

		if (time() - $config['database_gc'] <= $config['database_last_gc'])
		{
			break;
		}

		include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);

		if ($use_shutdown_function)
		{
			register_shutdown_function('tidy_database');
		}
		else
		{
			tidy_database();
		}

	break;

	case 'tidy_sessions':

		if (time() - $config['session_gc'] <= $config['session_last_gc'])
		{
			break;
		}

		if ($use_shutdown_function)
		{
			register_shutdown_function(array(&$user, 'session_gc'));
		}
		else
		{
			$user->session_gc();
		}

	break;

	case 'prune_forum':

		$forum_id = request_var('f', 0);

		$sql = 'SELECT forum_id, prune_next, enable_prune, prune_days, prune_viewed, forum_flags, prune_freq
			FROM ' . FORUMS_TABLE . "
			WHERE forum_id = $forum_id";
		$result = $db->sql_query($sql);
		$row = $db->sql_fetchrow($result);
		$db->sql_freeresult($result);

		if (!$row)
		{
			break;
		}

		// Do the forum Prune thang
		if ($row['prune_next'] < time() && $row['enable_prune'])
		{
			include_once($phpbb_root_path . 'includes/functions_admin.' . $phpEx);

			if ($row['prune_days'])
			{
				if ($use_shutdown_function)
				{
					register_shutdown_function('auto_prune', $row['forum_id'], 'posted', $row['forum_flags'], $row['prune_days'], $row['prune_freq']);
				}
				else
				{
					auto_prune($row['forum_id'], 'posted', $row['forum_flags'], $row['prune_days'], $row['prune_freq']);
				}
			}

			if ($row['prune_viewed'])
			{
				if ($use_shutdown_function)
				{
					register_shutdown_function('auto_prune', $row['forum_id'], 'viewed', $row['forum_flags'], $row['prune_viewed'], $row['prune_freq']);
				}
				else
				{
					auto_prune($row['forum_id'], 'viewed', $row['forum_flags'], $row['prune_viewed'], $row['prune_freq']);
				}
			}
		}

	break;
}

// Unloading cache and closing db after having done the dirty work.
if ($use_shutdown_function)
{
	register_shutdown_function('unlock_cron');
	register_shutdown_function('garbage_collection');
}
else
{
	unlock_cron();
	garbage_collection();
}

exit;


/**
* Unlock cron script
*/
function unlock_cron()
{
	global $db;

	$sql = 'UPDATE ' . CONFIG_TABLE . "
		SET config_value = '0'
		WHERE config_name = 'cron_lock' AND config_value = '" . $db->sql_escape(CRON_ID) . "'";
	$db->sql_query($sql);
}

?>