mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-12-18 04:31:06 +01:00
02c464b94f
r40051: * API/accounts: instance-wide cache for account-data incl. members and memberships, so change take imediate effect (compared to previous session based cache) r40052: not storing $GLOBALS[egw_info][user] twice in session (was also stored as $GLOBALS[egw]->session->user), also removing not used $GLOBALS[egw_info][user][acl], but re-reading preferences in session::verify() so long running sessions get preferences set by an other session, removing nowhere used creditspoint class from api (calls not public available creditspoint app) r40053: * API/preferences: caching preferences in instance cache instead of session, to get immediate update in long running sessions (eg. sync) and get smaller sessions
713 lines
20 KiB
PHP
713 lines
20 KiB
PHP
<?php
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/**
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* API - Timed Asynchron Services for eGroupWare
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*
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* @link http://www.egroupware.org
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* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @copyright Ralf Becker <RalfBecker-AT-outdoor-training.de>
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package api
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* @access public
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* @version $Id$
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*/
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/**
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* The class implements a general eGW service to execute callbacks at a given time.
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*
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* see http://www.egroupware.org/wiki/TimedAsyncServices
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*/
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class asyncservice
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{
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var $php = '';
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var $crontab = '';
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/**
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* Our instance of the db-class
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*
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* @var egw_db
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*/
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var $db;
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var $db_table = 'egw_async';
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var $debug = 0;
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/**
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* Line in crontab set by constructor with absolute path
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*
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* @var string
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*/
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var $cronline = '/phpgwapi/cron/asyncservices.php default';
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/**
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* constructor of the class
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*/
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function asyncservice()
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{
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if (is_object($GLOBALS['egw']->db))
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{
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$this->db = $GLOBALS['egw']->db;
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}
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else
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{
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$this->db = $GLOBALS['egw_setup']->db;
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}
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$this->cronline = EGW_SERVER_ROOT . '/phpgwapi/cron/asyncservices.php '.$GLOBALS['egw_info']['user']['domain'];
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$this->only_fallback = substr(php_uname(), 0, 7) == "Windows"; // atm cron-jobs dont work on win
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}
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/**
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* calculates the next run of the timer and puts that with the rest of the data in the db for later execution.
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*
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* @param int/array $times unix timestamp or array('min','hour','dow','day','month','year') with execution time.
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* Repeated events are possible to shedule by setting the array only partly, eg.
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* array('day' => 1) for first day in each month 0am or array('min' => '* /5', 'hour' => '9-17')
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* for every 5mins in the time from 9am to 5pm.
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* @param string $id unique id to cancel the request later, if necessary. Should be in a form like
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* eg. '<app><id>X' where id is the internal id of app and X might indicate the action.
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* @param string $method Method to be called via ExecMethod($method,$data). $method has the form
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* '<app>.<class>.<public function>'.
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* @param mixed $data=null This data is passed back when the method is called. If it is an array,
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* EGroupware will add the rest of the job parameters like id, next (sheduled exec time), times, ...
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* @param int $account_id account_id, under which the methode should be called or False for the actual user
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* @param boolean $debug=false
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* @return boolean False if $id already exists, else True
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*/
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function set_timer($times,$id,$method,$data=null,$account_id=False,$debug=false)
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{
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if (empty($id) || empty($method) || $this->read($id) ||
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!($next = $this->next_run($times,$debug)))
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{
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return False;
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}
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if ($account_id === False)
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{
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$account_id = $GLOBALS['egw_info']['user']['account_id'];
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}
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$job = array(
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'id' => $id,
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'next' => $next,
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'times' => $times,
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'method' => $method,
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'data' => $data,
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'account_id' => $account_id
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);
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$this->write($job);
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return True;
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}
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/**
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* calculates the next execution time for $times
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*
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* @param int/array $times unix timestamp or array('year'=>$year,'month'=>$month,'dow'=>$dow,'day'=>$day,'hour'=>$hour,'min'=>$min)
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* with execution time. Repeated execution is possible to shedule by setting the array only partly,
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* eg. array('day' => 1) for first day in each month 0am or array('min' => '/5', 'hour' => '9-17')
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* for every 5mins in the time from 9am to 5pm. All not set units before the smallest one set,
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* are taken into account as every possible value, all after as the smallest possible value.
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* @param boolean $debug if True some debug-messages about syntax-errors in $times are echoed
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* @param int $now Use this time to calculate then next run from. Defaults to time().
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* @return int a unix timestamp of the next execution time or False if no more executions
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*/
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function next_run($times,$debug=False, $now = null)
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{
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if ($this->debug)
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{
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echo "<p>next_run("; print_r($times); echo ",'$debug', " . date('Y-m-d H:i', $now) . ")</p>\n";
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$debug = True; // enable syntax-error messages too
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}
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if(is_null($now)) {
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$now = time();
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}
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// $times is unix timestamp => if it's not expired return it, else False
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//
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if (!is_array($times))
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{
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$next = (int)$times;
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return $next > $now ? $next : False;
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}
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// If an array is given, we have to enumerate the possible times first
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//
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$units = array(
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'year' => 'Y',
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'month' => 'm',
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'day' => 'd',
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'dow' => 'w',
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'hour' => 'H',
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'min' => 'i'
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);
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$max_unit = array(
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'min' => 59,
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'hour' => 23,
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'dow' => 6,
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'day' => 31,
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'month' => 12,
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'year' => date('Y')+10 // else */[0-9] would never stop returning numbers
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);
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$min_unit = array(
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'min' => 0,
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'hour' => 0,
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'dow' => 0,
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'day' => 1,
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'month' => 1,
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'year' => date('Y')
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);
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// get the number of the first and last pattern set in $times,
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// as empty patterns get enumerated before the the last pattern and
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// get set to the minimum after
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//
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$n = $first_set = $last_set = 0;
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foreach($units as $u => $date_pattern)
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{
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++$n;
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if (isset($times[$u]))
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{
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$last_set = $n;
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if (!$first_set)
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{
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$first_set = $n;
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}
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}
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}
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// now we go through all units and enumerate all patterns and not set patterns
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// (as descript above), enumerations are arrays with unit-values as keys
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//
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$n = 0;
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foreach($units as $u => $date_pattern)
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{
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++$n;
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if ($this->debug) { echo "<p>n=$n, $u: isset(times[$u]="; print_r($times[$u]); echo ")=".(isset($times[$u])?'True':'False')."</p>\n"; }
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if (isset($times[$u]))
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{
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if(is_array($times[$u])) {
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$time = array_keys($times[$u]);
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} else {
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$time = explode(',',$times[$u]);
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}
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$times[$u] = array();
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foreach($time as $t)
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{
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if (strpos($t,'-') !== False && strpos($t,'/') === False)
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{
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list($min,$max) = $arr = explode('-',$t);
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if (count($arr) != 2 || !is_numeric($min) || !is_numeric($max) || $min > $max)
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{
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if ($debug) echo "<p>Syntax error in $u='$t', allowed is 'min-max', min <= max, min='$min', max='$max'</p>\n";
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return False;
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}
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for ($i = (int)$min; $i <= $max; ++$i)
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{
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$times[$u][$i] = True;
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}
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}
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else
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{
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if ((string)$t == '*') $t = '*/1';
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list($one,$inc) = $arr = explode('/',$t);
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if (!(is_numeric($one) && count($arr) == 1 ||
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count($arr) == 2 && is_numeric($inc)))
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{
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if ($debug) echo "<p>Syntax error in $u='$t', allowed is a number or '{*|range}/inc', inc='$inc'</p>\n";
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return False;
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}
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if (count($arr) == 1)
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{
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$times[$u][(int)$one] = True;
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}
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else
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{
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list($min,$max) = $arr = explode('-',$one);
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if (empty($one) || $one == '*')
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{
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$min = $min_unit[$u];
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$max = $max_unit[$u];
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}
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elseif (count($arr) != 2 || $min > $max)
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{
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if ($debug) echo "<p>Syntax error in $u='$t', allowed is '{*|min-max}/inc', min='$min',max='$max', inc='$inc'</p>\n";
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return False;
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}
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for ($i = $min; $i <= $max; $i += $inc)
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{
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$times[$u][$i] = True;
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}
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}
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}
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}
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}
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elseif ($n < $last_set || $u == 'dow') // before last value set (or dow) => empty gets enumerated
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{
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for ($i = $min_unit[$u]; $i <= $max_unit[$u]; ++$i)
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{
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$times[$u][$i] = True;
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}
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}
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else // => after last value set => empty is min-value
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{
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$times[$u][$min_unit[$u]] = True;
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}
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}
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if ($this->debug) { echo "enumerated times=<pre>"; print_r($times); echo "</pre>\n"; }
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// now we have the times enumerated, lets find the first not expired one
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//
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$found = array();
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while (!isset($found['min']))
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{
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$future = False;
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foreach($units as $u => $date_pattern)
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{
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$unit_now = $u != 'dow' ? (int)date($date_pattern, $now) :
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(int)date($date_pattern,mktime(12,0,0,$found['month'],$found['day'],$found['year']));
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if (isset($found[$u]))
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{
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$future = $future || $found[$u] > $unit_now;
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if ($this->debug) echo "--> already have a $u = ".$found[$u].", future='$future'<br>\n";
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continue; // already set
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}
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foreach($times[$u] as $unit_value => $nul)
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{
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switch($u)
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{
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case 'dow':
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$valid = $unit_value == $unit_now;
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break;
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case 'min':
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$valid = $future || $unit_value > $unit_now;
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break;
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default:
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$valid = $future || $unit_value >= $unit_now;
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break;
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}
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if ($valid && ($u != $next || $unit_value > $over)) // valid and not over
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{
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$found[$u] = $unit_value;
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$future = $future || $unit_value > $unit_now;
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break;
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}
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}
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if (!isset($found[$u])) // we have to try the next one, if it exists
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{
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$next = array_keys($units);
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if (!isset($next[count($found)-1]))
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{
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if ($this->debug) echo "<p>Nothing found, exiting !!!</p>\n";
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return False;
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}
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$next = $next[count($found)-1];
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$over = $found[$next];
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unset($found[$next]);
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if ($this->debug) echo "<p>Have to try the next $next, $u's are over for $next=$over !!!</p>\n";
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break;
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}
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}
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}
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if ($this->debug) { echo "<p>next="; print_r($found); echo "</p>\n"; }
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return mktime($found['hour'],$found['min'],0,$found['month'],$found['day'],$found['year']);
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}
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/**
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* cancels a timer
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*
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* @param string $id has to be the one used to set it.
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* @return boolean True if the timer exists and is not expired.
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*/
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function cancel_timer($id)
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{
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return $this->delete($id);
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}
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/**
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* checks when the last check_run was run or set the run-semaphore (async_next != 0) if $semaphore == True
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*
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* @param boolean $semaphore if False only check, if true try to set/release the semaphore
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* @param boolean $release if $semaphore == True, tells if we should set or release the semaphore
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* @return mixed if !$set array('start' => $start,'end' => $end) with timestamps of last check_run start and end, \
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* !$end means check_run is just running. If $set returns True if it was able to get the semaphore, else False
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*/
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function last_check_run($semaphore=False,$release=False,$run_by='')
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{
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//echo "<p>last_check_run(semaphore=".($semaphore?'True':'False').",release=".($release?'True':'False').")</p>\n";
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if ($exists = $this->read('##last-check-run##'))
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{
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list(,$last_run) = each($exists);
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}
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//echo "last_run (from db)=<pre>"; print_r($last_run); echo "</pre>\n";
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if (!$semaphore)
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{
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return $last_run['data'];
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}
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$where = array();
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if ($release)
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{
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$last_run['next'] = 0;
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$last_run['data']['end'] = time();
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}
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else
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{
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@set_time_limit(0); // dont stop for an execution-time-limit
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ignore_user_abort(True);
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$last_run = array(
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'id' => '##last-check-run##',
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'next' => time(),
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'times' => array(),
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'method' => 'none',
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'data' => array(
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'run_by'=> $run_by,
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'start' => time(),
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'end' => 0
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)
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);
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// as the async_next column is used as a semaphore we only update it,
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// if it is 0 (semaphore released) or older then 10min to recover from failed or crashed attempts
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if ($exists) $where = array('async_next=0 OR async_next<'.time()-600);
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}
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//echo "last_run=<pre>"; print_r($last_run); echo "</pre>\n";
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return $this->write($last_run,!!$exits,$where) > 0;
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}
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/**
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* checks if there are any jobs ready to run (timer expired) and executes them
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*/
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function check_run($run_by='')
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{
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if ($run_by === 'fallback') flush();
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if (!$this->last_check_run(True,False,$run_by))
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{
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return False; // cant obtain semaphore
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}
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if ($jobs = $this->read())
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{
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foreach($jobs as $id => $job)
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{
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// checking / setting up egw_info/user
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//
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if ($GLOBALS['egw_info']['user']['account_id'] != $job['account_id'])
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{
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// unset all objects in $GLOBALS, which are created and used by ExecMethod, as they can contain user-data
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foreach($GLOBALS as $name => $value)
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{
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if ($name !== 'egw' && is_object($value)) unset($GLOBALS[$name]);
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}
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$domain = $GLOBALS['egw_info']['user']['domain'];
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$lang = $GLOBALS['egw_info']['user']['preferences']['common']['lang'];
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unset($GLOBALS['egw_info']['user']);
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if ($GLOBALS['egw']->session->account_id = $job['account_id'])
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{
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$GLOBALS['egw']->session->account_lid = $GLOBALS['egw']->accounts->id2name($job['account_id']);
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$GLOBALS['egw']->session->account_domain = $domain;
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$GLOBALS['egw_info']['user'] = $GLOBALS['egw']->session->read_repositories();
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if ($lang != $GLOBALS['egw_info']['user']['preferences']['common']['lang'])
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{
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translation::init();
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}
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}
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else
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{
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$GLOBALS['egw_info']['user']['domain'] = $domain;
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}
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}
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list($app) = strpos($job['method'],'::') !== false ? explode('_',$job['method']) :
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explode('.',$job['method']);
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translation::add_app($app);
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if (is_array($job['data']))
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{
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$job['data'] += array_diff_key($job,array('data' => false));
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}
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try
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{
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ExecMethod($job['method'],$job['data']);
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}
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catch(Exception $e)
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{
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// log the exception to error_log, but continue running other async jobs
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_egw_log_exception($e);
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}
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// re-read job, in case it had been updated or even deleted in the method
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$updated = $this->read($id);
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if ($updated && isset($updated[$id]))
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{
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$job = $updated[$id];
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if ($job['next'] = $this->next_run($job['times']))
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{
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$this->write($job,True);
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}
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else // no further runs
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{
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$this->delete($job['id']);
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}
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}
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}
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}
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$this->last_check_run(True,True,$run_by); // release semaphore
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return $jobs ? count($jobs) : 0;
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}
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/**
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* reads all matching db-rows / jobs
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*
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* @param string $id =0 reads all expired rows / jobs ready to run\
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* != 0 reads all rows/jobs matching $id (sql-wildcards '%' and '_' can be used)
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* @param array|string $cols='*' string or array of column-names / select-expressions
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* @param int|bool $offset=False offset for a limited query or False (default)
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* @param string $append='ORDER BY async_next' string to append to the end of the query
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* @param int $num_rows=0 number of rows to return if offset set, default 0 = use default in user prefs
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* @return array/boolean db-rows / jobs as array or False if no matches
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*/
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function read($id=0,$cols='*',$offset=False,$append='ORDER BY async_next',$num_rows=0)
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|
{
|
|
if ($id === '%')
|
|
{
|
|
$where = "async_id != '##last-check-run##'";
|
|
}
|
|
elseif (!is_array($id) && (strpos($id,'%') !== False || strpos($id,'_') !== False))
|
|
{
|
|
$id = $this->db->quote($id);
|
|
$where = "async_id LIKE $id AND async_id != '##last-check-run##'";
|
|
}
|
|
elseif (!$id)
|
|
{
|
|
$where = 'async_next <= '.time()." AND async_id != '##last-check-run##'";
|
|
}
|
|
else
|
|
{
|
|
$where = array('async_id' => $id);
|
|
}
|
|
$jobs = array();
|
|
foreach($this->db->select($this->db_table,$cols,$where,__LINE__,__FILE__,$offset,$append,False,$num_rows) as $row)
|
|
{
|
|
$row['async_times'] = unserialize($row['async_times']);
|
|
$row['async_data'] = unserialize($row['async_data']);
|
|
$jobs[$row['async_id']] = egw_db::strip_array_keys($row,'async_');
|
|
}
|
|
if (!count($jobs))
|
|
{
|
|
return False;
|
|
}
|
|
return $jobs;
|
|
}
|
|
|
|
/**
|
|
* write a job / db-row to the db
|
|
*
|
|
* @param array $job db-row as array
|
|
* @param boolean $exits if True, we do an update, else we check if update or insert necesary
|
|
* @param array $where additional where statemetn to update only if a certain condition is met, used for the semaphore
|
|
* @return int affected rows, cat be 0 if an additional where statement is given
|
|
*/
|
|
function write($job,$exists = False,$where=array())
|
|
{
|
|
$data = array(
|
|
'async_next' => $job['next'],
|
|
'async_times' => serialize($job['times']),
|
|
'async_method' => $job['method'],
|
|
'async_data' => serialize($job['data']),
|
|
'async_account_id'=> $job['account_id'],
|
|
);
|
|
if ($exists)
|
|
{
|
|
$this->db->update($this->db_table,$data,array('async_id' => $job['id']),__LINE__,__FILE__);
|
|
}
|
|
else
|
|
{
|
|
$this->db->insert($this->db_table,$data,array('async_id' => $job['id']),__LINE__,__FILE__);
|
|
}
|
|
return $this->db->affected_rows();
|
|
}
|
|
|
|
/**
|
|
* delete db-row / job with $id
|
|
*
|
|
* @return boolean False if $id not found else True
|
|
*/
|
|
function delete($id)
|
|
{
|
|
$this->db->delete($this->db_table,array('async_id' => $id),__LINE__,__FILE__);
|
|
|
|
return $this->db->affected_rows();
|
|
}
|
|
|
|
function find_binarys()
|
|
{
|
|
static $run = False;
|
|
if ($run)
|
|
{
|
|
return;
|
|
}
|
|
$run = True;
|
|
|
|
if (substr(php_uname(), 0, 7) == "Windows")
|
|
{
|
|
// ToDo: find php-cgi on windows
|
|
}
|
|
else
|
|
{
|
|
$binarys = array(
|
|
'php' => '/usr/bin/php',
|
|
'php4' => '/usr/bin/php4', // this is for debian
|
|
'php5' => '/usr/bin/php5', // SuSE 9.3 with php5
|
|
'crontab' => '/usr/bin/crontab'
|
|
);
|
|
foreach ($binarys as $name => $path)
|
|
{
|
|
$this->$name = $path; // a reasonable default for *nix
|
|
|
|
if (!($Ok = @is_executable($this->$name)))
|
|
{
|
|
if (file_exists($this->$name))
|
|
{
|
|
echo '<p>'.lang('%1 is not executable by the webserver !!!',$this->$name)."</p>\n";
|
|
$perms = fileperms($this->$name);
|
|
if (!($perms & 0x0001) && ($perms & 0x0008)) // only executable by group
|
|
{
|
|
$group = posix_getgrgid(filegroup($this->$name));
|
|
$webserver = posix_getpwuid(posix_getuid ());
|
|
echo '<p>'.lang("You need to add the webserver user '%1' to the group '%2'.",$webserver['name'],$group['name'])."</p>\n"; }
|
|
}
|
|
if ($fd = popen('/bin/sh -c "type -p '.$name.'"','r'))
|
|
{
|
|
$this->$name = fgets($fd,256);
|
|
@pclose($fd);
|
|
}
|
|
if ($pos = strpos($this->$name,"\n"))
|
|
{
|
|
$this->$name = substr($this->$name,0,$pos);
|
|
}
|
|
}
|
|
if (!$Ok && !@is_executable($this->$name))
|
|
{
|
|
$this->$name = $name; // hopefully its in the path
|
|
}
|
|
//echo "<p>$name = '".$this->$name."'</p>\n";
|
|
}
|
|
if ($this->php4{0} == '/') // we found a php4 binary
|
|
{
|
|
$this->php = $this->php4;
|
|
}
|
|
if ($this->php5{0} == '/') // we found a php5 binary
|
|
{
|
|
$this->php = $this->php5;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* checks if phpgwapi/cron/asyncservices.php is installed as cron-job
|
|
*
|
|
* @return array the times asyncservices are run (normaly 'min'=>'* /5') or False if not installed or 0 if crontab not found
|
|
* Not implemented for Windows at the moment, always returns 0
|
|
*/
|
|
function installed()
|
|
{
|
|
if ($this->only_fallback) {
|
|
return 0;
|
|
}
|
|
$this->find_binarys();
|
|
|
|
if (!is_executable($this->crontab))
|
|
{
|
|
//echo "<p>Error: $this->crontab not found !!!</p>";
|
|
return 0;
|
|
}
|
|
$times = False;
|
|
$this->other_cronlines = array();
|
|
if (($crontab = popen('/bin/sh -c "'.$this->crontab.' -l" 2>&1','r')) !== False)
|
|
{
|
|
while ($line = fgets($crontab,256))
|
|
{
|
|
if ($this->debug) echo 'line '.++$n.": $line<br>\n";
|
|
$parts = explode(' ',$line,6);
|
|
|
|
if ($line{0} == '#' || count($parts) < 6 || ($parts[5]{0} != '/' && substr($parts[5],0,3) != 'php'))
|
|
{
|
|
// ignore comments
|
|
if ($line{0} != '#')
|
|
{
|
|
$times['error'] .= $line;
|
|
}
|
|
}
|
|
elseif (strpos($line,$this->cronline) !== False)
|
|
{
|
|
$cron_units = array('min','hour','day','month','dow');
|
|
foreach($cron_units as $n => $u)
|
|
{
|
|
$times[$u] = $parts[$n];
|
|
}
|
|
$times['cronline'] = $line;
|
|
}
|
|
else
|
|
{
|
|
$this->other_cronlines[] = $line;
|
|
}
|
|
}
|
|
@pclose($crontab);
|
|
}
|
|
return $times;
|
|
}
|
|
|
|
/**
|
|
* installs /phpgwapi/cron/asyncservices.php as cron-job
|
|
*
|
|
* Not implemented for Windows at the moment, always returns 0
|
|
*
|
|
* @param array $times array with keys 'min','hour','day','month','dow', not set is equal to '*'.
|
|
* False means de-install our own crontab line
|
|
* @return mixed the times asyncservices are run, False if they are not installed,
|
|
* 0 if crontab not found and ' ' if crontab is deinstalled
|
|
*/
|
|
function install($times)
|
|
{
|
|
if ($this->only_fallback && $times !== False) {
|
|
return 0;
|
|
}
|
|
$this->installed(); // find other installed cronlines
|
|
|
|
if (($crontab = popen('/bin/sh -c "'.$this->crontab.' -" 2>&1','w')) !== False)
|
|
{
|
|
if (is_array($this->other_cronlines))
|
|
{
|
|
foreach ($this->other_cronlines as $cronline)
|
|
{
|
|
fwrite($crontab,$cronline); // preserv the other lines on install
|
|
}
|
|
}
|
|
if ($times !== False)
|
|
{
|
|
$cron_units = array('min','hour','day','month','dow');
|
|
$cronline = '';
|
|
foreach($cron_units as $cu)
|
|
{
|
|
$cronline .= (isset($times[$cu]) ? $times[$cu] : '*') . ' ';
|
|
}
|
|
// -d memory_limit=-1 --> no memory limit
|
|
$cronline .= $this->php.' -q -d memory_limit=-1 '.$this->cronline."\n";
|
|
//echo "<p>Installing: '$cronline'</p>\n";
|
|
fwrite($crontab,$cronline);
|
|
}
|
|
@pclose($crontab);
|
|
}
|
|
return $times !== False ? $this->installed() : ' ';
|
|
}
|
|
}
|