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
|
<?php
/**
* Elgg log rotator.
*
* @package ElggLogRotate
*/
elgg_register_event_handler('init', 'system', 'logrotate_init');
function logrotate_init() {
$period = elgg_get_plugin_setting('period', 'logrotate');
$delete = elgg_get_plugin_setting('delete', 'logrotate');
switch ($period) {
case 'weekly':
case 'monthly' :
case 'yearly' :
break;
default:
$period = 'monthly';
}
// Register cron hook for archival of logs
elgg_register_plugin_hook_handler('cron', $period, 'logrotate_archive_cron');
if ($delete != 'never') {
// Register cron hook for deletion of selected archived logs
elgg_register_plugin_hook_handler('cron', $delete, 'logrotate_delete_cron');
}
}
/**
* Trigger the log rotation.
*/
function logrotate_archive_cron($hook, $entity_type, $returnvalue, $params) {
$resulttext = elgg_echo("logrotate:logrotated");
$day = 86400;
$offset = 0;
$period = elgg_get_plugin_setting('period', 'logrotate');
switch ($period) {
case 'weekly':
$offset = $day * 7;
break;
case 'yearly':
$offset = $day * 365;
break;
case 'monthly':
default:
// assume 28 days even if a month is longer. Won't cause data loss.
$offset = $day * 28;
}
if (!archive_log($offset)) {
$resulttext = elgg_echo("logrotate:lognotrotated");
}
return $returnvalue . $resulttext;
}
/**
* Trigger the log deletion.
*/
function logrotate_delete_cron($hook, $entity_type, $returnvalue, $params) {
$resulttext = elgg_echo("logrotate:logdeleted");
$day = 86400;
$offset = 0;
$period = elgg_get_plugin_setting('delete', 'logrotate');
switch ($period) {
case 'weekly':
$offset = $day * 7;
break;
case 'yearly':
$offset = $day * 365;
break;
case 'monthly':
default:
// assume 28 days even if a month is longer. Won't cause data loss.
$offset = $day * 28;
}
if (!log_browser_delete_log($offset)) {
$resulttext = elgg_echo("logrotate:lognotdeleted");
}
return $returnvalue . $resulttext;
}
/**
* This function deletes archived copies of the system logs that are older than specified.
*
* @param int $time_of_delete An offset in seconds from now to delete log tables
* @return bool Were any log tables deleted
*/
function log_browser_delete_log($time_of_delete) {
global $CONFIG;
$cutoff = time() - (int)$time_of_delete;
$deleted_tables = false;
$results = get_data("SHOW TABLES like '{$CONFIG->dbprefix}system_log_%'");
if ($results) {
foreach ($results as $result) {
$data = (array)$result;
$table_name = array_shift($data);
// extract log table rotation time
$log_time = str_replace("{$CONFIG->dbprefix}system_log_", '', $table_name);
if ($log_time < $cutoff) {
if (delete_data("DROP TABLE $table_name") !== false) {
// delete_data returns 0 when dropping a table (false for failure)
$deleted_tables = true;
} else {
elgg_log("Failed to delete the log table $table_name", 'ERROR');
}
}
}
}
return $deleted_tables;
}
|
