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<?php
/**
* Implementation of the Quota API for servers where IMAP Quota is not
* supported, but it appears in the servers messages log for the IMAP
* server.
*
* Requires the following parameter settings in imp/servers.php:
* 'quota' => array(
* 'driver' => 'logfile',
* 'params' => array(
* 'logfile' => '/path/to/log/file',
* 'taillines' => 10,
* 'FTPmail' => 'FTP',
* 'beginocc' => 'usage = ',
* 'midocc' => ' of ',
* 'endocc' => ' bytes'
* )
* );
*
* logfile -- The path/to/filename of the log file to use.
* taillines -- The number of lines to look at in the tail of the logfile.
* FTPmail -- If you want to show what FTP space is available (IMAP folder)
* or what mail space is available (INBOX).
* Defines the search string to username:
* FTPmail to identify the line with QUOTA info.
* beginocc -- String that designates the characters before the usage
* number.
* midocc -- String between usage and total storage space.
* endocc -- String after the storage number.
*
* $Horde: imp/lib/Quota/logfile.php,v 1.5.10.5 2007/12/20 13:59:29 jan Exp $
*
* See the enclosed file COPYING for license information (GPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/gpl.html.
*
* @author Tim Gorter <email@teletechnics.co.nz>
* @package IMP_Quota
*/
class IMP_Quota_logfile extends IMP_Quota {
/**
* Constructor
*
* @param array $params Hash containing connection parameters.
*/
function IMP_Quota_logfile($params = array())
{
$this->_params = array(
'logfile' => '',
'taillines' => 10,
'FTPmail' => 'FTP',
'beginocc' => 'usage = ',
'midocc' => ' of ',
'endocc' => ' bytes'
);
$this->_params = array_merge($this->_params, $params);
}
/**
* Get quota information (used/allocated), in bytes.
*
* @return mixed An associative array.
* 'limit' = Maximum quota allowed
* 'usage' = Currently used portion of quota (in bytes)
* Returns PEAR_Error on failure.
*/
function getQuota()
{
if (is_file($this->_params['logfile'])) {
$full = file($this->_params['logfile']);
for (; $this->_params['taillines'] > 0; $this->_params['taillines']--) {
$tail[] = $full[count($full) - $this->_params['taillines']];
}
$uname = $_SESSION['imp']['user'];
$FTPmail = $this->_params['FTPmail'];
$virtline = preg_grep("[$uname: $FTPmail]", $tail);
$virtline = array_values($virtline);
$usage = substr($virtline[0],
strpos($virtline[0], $this->_params['beginocc']) + strlen($this->_params['beginocc']),
strpos($virtline[0], $this->_params['midocc']));
$storage = substr($virtline[0],
strpos($virtline[0], $this->_params['midocc']) + strlen($this->_params['midocc']),
strpos($virtline[0], $this->_params['endocc']));
return array('usage' => $usage, 'limit' => $storage);
}
return PEAR::raiseError(_("Unable to retrieve quota"), 'horde.error');
}
}
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