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pandorafms/pandora_console/include/functions_cron.php

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<?php
//Pandora FMS- http://pandorafms.com
// ==================================================
// Copyright (c) 20012 Artica Soluciones Tecnologicas
// Please see http://pandorafms.org for full contribution list
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation; version 2
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
global $config;
include_once($config['homedir'] . "/include/functions_db.php");
// Update the execution interval of the given module
function cron_update_module_interval ($module_id, $cron) {
// Check for a valid cron
if (!cron_check_syntax($cron)) {
return;
}
if($cron == "* * * * *"){
$module_interval = db_get_value_filter('module_interval','tagente_modulo',array("id_agente_modulo" => $module_id));
return db_process_sql ('UPDATE tagente_estado SET current_interval = ' . $module_interval . ' WHERE id_agente_modulo = ' . (int) $module_id);
} else {
return db_process_sql (
'UPDATE tagente_estado SET current_interval = ' .
cron_next_execution ($cron, $module_interval, $module_id) .
' WHERE id_agente_modulo = ' .
(int) $module_id)
;
}
}
// Get the number of seconds left to the next execution of the given cron entry.
function cron_next_execution ($cron, $module_interval, $module_id) {
// Get day of the week and month from cron config
list ($minute, $hour, $mday, $month, $wday) = explode (" ", $cron);
// Get last execution time
$last_execution = db_get_value('utimestamp', 'tagente_estado', 'id_agente_modulo', $module_id);
$cur_time = ($last_execution !== false) ? $last_execution : time();
// Any day of the way
if ($wday == '*') {
$nex_time = cron_next_execution_date ($cron, $cur_time, $module_interval);
return $nex_time - $cur_time;
}
// A specific day of the week
$count = 0;
$nex_time = $cur_time;
do {
$nex_time = cron_next_execution_date ($cron, $nex_time, $module_interval);
$nex_time_wd = $nex_time;
list ($nex_mon, $nex_wday) = explode (" ", date ("m w", $nex_time_wd));
do {
// Check the day of the week
if ($nex_wday == $wday) {
return $nex_time_wd - $cur_time;
}
// Move to the next day of the month
$nex_time_wd += SECONDS_1DAY;
list ($nex_mon_wd, $nex_wday) = explode (" ", date ("m w", $nex_time_wd));
}
while ($mday == '*' && $nex_mon_wd == $nex_mon);
$count++;
}
while ($count < SECONDS_1MINUTE);
// Something went wrong, default to 5 minutes
return SECONDS_5MINUTES;
}
// Get the next execution date for the given cron entry in seconds since epoch.
function cron_next_execution_date ($cron, $cur_time = false, $module_interval = 300) {
// Get cron configuration
$cron_array = explode (" ", $cron);
// REMARKS: Months start from 1 in php (different to server)
// Get current time
if ($cur_time === false) $cur_time = time();
$nex_time = $cur_time + $module_interval;
$nex_time_array = explode (" ", date ("i H d m Y", $nex_time));
if (cron_is_in_cron($cron_array, $nex_time_array)) return $nex_time;
// Update minutes
$min_s = cron_get_interval ($cron_array[0]);
$nex_time_array[0] = ($min_s['down'] == '*') ? 0 : $min_s['down'];
$nex_time = cron_valid_date($nex_time_array);
if ($nex_time >= $cur_time) {
if (cron_is_in_cron($cron_array, $nex_time_array) && $nex_time) {
return $nex_time;
}
}
// Check if next hour is in cron
$nex_time_array[1]++;
$nex_time = cron_valid_date($nex_time_array);
if ($nex_time === false) {
// Update the month day if overflow
$nex_time_array[1] = 0;
$nex_time_array[2]++;
$nex_time = cron_valid_date($nex_time_array);
if ($nex_time === false) {
// Update the month if overflow
$nex_time_array[2] = 1;
$nex_time_array[3]++;
$nex_time = cron_valid_date($nex_time_array);
if ($nex_time === false) {
#Update the year if overflow
$nex_time_array[3] = 1;
$nex_time_array[4]++;
$nex_time = cron_valid_date($nex_time_array);
}
}
}
// Check the hour
if (cron_is_in_cron($cron_array, $nex_time_array) && $nex_time) {
return $nex_time;
}
// Update the hour if fails
$hour_s = cron_get_interval ($cron_array[1]);
$nex_time_array[1] = ($hour_s['down'] == '*') ? 0 : $hour_s['down'];
// When an overflow is passed check the hour update again
$nex_time = cron_valid_date($nex_time_array);
if ($nex_time >= $cur_time) {
if (cron_is_in_cron($cron_array, $nex_time_array) && $nex_time) {
return $nex_time;
}
}
// Check if next day is in cron
$nex_time_array[2]++;
$nex_time = cron_valid_date($nex_time_array);
if ($nex_time === false) {
// Update the month if overflow
$nex_time_array[2] = 1;
$nex_time_array[3]++;
$nex_time = cron_valid_date($nex_time_array);
if ($nex_time === false) {
// Update the year if overflow
$nex_time_array[3] = 1;
$nex_time_array[4]++;
$nex_time = cron_valid_date($nex_time_array);
}
}
// Check the day
if (cron_is_in_cron($cron_array, $nex_time_array) && $nex_time) {
return $nex_time;
}
// Update the day if fails
$mday_s = cron_get_interval ($cron_array[2]);
$nex_time_array[2] = ($mday_s['down'] == '*') ? 1 : $mday_s['down'];
// When an overflow is passed check the hour update in the next execution
$nex_time = cron_valid_date($nex_time_array);
if ($nex_time >= $cur_time) {
if (cron_is_in_cron($cron_array, $nex_time_array) && $nex_time) {
return $nex_time;
}
}
// Check if next month is in cron
$nex_time_array[3]++;
$nex_time = cron_valid_date($nex_time_array);
if ($nex_time === false) {
#Update the year if overflow
$nex_time_array[3] = 1;
$nex_time_array[4]++;
$nex_time = cron_valid_date($nex_time_array);
}
// Check the month
if (cron_is_in_cron($cron_array, $nex_time_array) && $nex_time) {
return $nex_time;
}
// Update the month if fails
$mon_s = cron_get_interval ($cron_array[3]);
$nex_time_array[3] = ($mon_s['down'] == '*') ? 1 : $mon_s['down'];
// When an overflow is passed check the hour update in the next execution
$nex_time = cron_valid_date($nex_time_array);
if ($nex_time >= $cur_time) {
if (cron_is_in_cron($cron_array, $nex_time_array) && $nex_time) {
return $nex_time;
}
}
// Update the year
$nex_time_array[4]++;
$nex_time = cron_valid_date($nex_time_array);
return ($nex_time !== false) ? $nex_time : $module_interval;
}
// Get an array with the cron interval
function cron_get_interval ($element) {
# Not a range
if (!preg_match('/(\d+)\-(\d+)/', $element, $capture)) {
return array(
'down' => $element,
'up' => false
);
}
return array(
'down' => $capture[1],
'up' => $capture[2]
);
}
// Returns if a date is in a cron. Recursive.
function cron_is_in_cron($elems_cron, $elems_curr_time) {
$elem_cron = array_shift($elems_cron);
$elem_curr_time = array_shift($elems_curr_time);
// If there is no elements means that is in cron
if ($elem_cron === null || $elem_curr_time === null) return true;
// Go to last element if current is a wild card
if ($elem_cron != '*') {
$elem_s = cron_get_interval($elem_cron);
// Check if there is no a range
if (($elem_s['up'] === false) && ($elem_s['down'] != $elem_curr_time)) {
return false;
}
// Check if there is on the range
if ($elem_s['up'] !== false) {
if ($elem_s['down'] < $elem_s['up']) {
if ($elem_curr_time < $elem_s['down'] || $elem_curr_time > $elem_s['up']){
return false;
}
} else {
if ($elem_curr_time > $elem_s['down'] || $elem_curr_time < $elem_s['up']){
return false;
}
}
}
}
return cron_is_in_cron($elems_cron, $elems_curr_time);
}
function cron_valid_date ($da) {
$st = sprintf("%04d:%02d:%02d %02d:%02d:00", $da[4], $da[3], $da[2], $da[1], $da[0]);
$time = strtotime($st);
return $time;
}
// Check if cron is properly constructed
function cron_check_syntax($cron) {
return preg_match("/^[\d|\*].* .*[\d|\*].* .*[\d|\*].* .*[\d|\*].* .*[\d|\*]$/", $cron);
}
?>
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