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joko |
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<?php |
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// $Id: syslog.php,v 1.10 2002/12/02 05:23:00 jon Exp $ |
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// $Horde: horde/lib/Log/syslog.php,v 1.6 2000/06/28 21:36:13 jon Exp $ |
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/** |
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* The Log_syslog class is a concrete implementation of the Log:: |
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* abstract class which sends messages to syslog on UNIX-like machines |
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* (PHP emulates this with the Event Log on Windows machines). |
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* |
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* @author Chuck Hagenbuch <chuck@horde.org> |
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* @version $Revision: 1.10 $ |
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* @since Horde 1.3 |
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* @package Log |
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*/ |
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class Log_syslog extends Log { |
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/** |
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* Integer holding the log facility to use. |
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* @var string |
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*/ |
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var $_name = LOG_SYSLOG; |
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/** |
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* Constructs a new syslog object. |
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* |
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* @param string $name The syslog facility. |
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* @param string $ident The identity string. |
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* @param array $conf The configuration array. |
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* @param int $maxLevel Maximum level at which to log. |
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* @access public |
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*/ |
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function Log_syslog($name, $ident = '', $conf = array(), |
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$maxLevel = PEAR_LOG_DEBUG) |
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{ |
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/* Ensure we have a valid integer value for $name. */ |
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if (empty($name) || !is_int($name)) { |
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$name = LOG_SYSLOG; |
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} |
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$this->_name = $name; |
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$this->_ident = $ident; |
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$this->_maxLevel = $maxLevel; |
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} |
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/** |
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* Opens a connection to the system logger, if it has not already |
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* been opened. This is implicitly called by log(), if necessary. |
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* @access public |
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*/ |
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function open() |
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{ |
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if (!$this->_opened) { |
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openlog($this->_ident, LOG_PID, $this->_name); |
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$this->_opened = true; |
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} |
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} |
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/** |
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* Closes the connection to the system logger, if it is open. |
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* @access public |
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*/ |
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function close() |
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{ |
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if ($this->_opened) { |
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closelog(); |
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$this->_opened = false; |
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} |
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} |
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/** |
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* Sends $message to the currently open syslog connection. Calls |
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* open() if necessary. Also passes the message along to any Log_observer |
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* instances that are observing this Log. |
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* |
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* @param string $message The textual message to be logged. |
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* @param int $priority (optional) The priority of the message. Valid |
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* values are: PEAR_LOG_EMERG, PEAR_LOG_ALERT, |
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* PEAR_LOG_CRIT, PEAR_LOG_ERR, PEAR_LOG_WARNING, |
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* PEAR_LOG_NOTICE, PEAR_LOG_INFO, and PEAR_LOG_DEBUG. |
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* The default is PEAR_LOG_INFO. |
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* @return boolean True on success or false on failure. |
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* @access public |
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*/ |
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function log($message, $priority = PEAR_LOG_INFO) |
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{ |
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/* Abort early if the priority is above the maximum logging level. */ |
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if ($priority > $this->_maxLevel) { |
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return false; |
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} |
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if (!$this->_opened) { |
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$this->open(); |
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} |
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if (!syslog($this->_toSyslog($priority), $message)) { |
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return false; |
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} |
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$this->notifyAll(array('priority' => $priority, 'message' => $message)); |
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return true; |
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} |
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/** |
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* Converts a PEAR_LOG_* constant into a syslog LOG_* constant. |
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* |
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* This function exists because, under Windows, not all of the LOG_* |
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* constants have unique values. Instead, the PEAR_LOG_* were introduced |
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* for global use, with the conversion to the LOG_* constants kept local to |
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* to the syslog driver. |
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* |
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* @param int $priority PEAR_LOG_* value to convert to LOG_* value. |
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* |
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* @return The LOG_* representation of $priority. |
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* |
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* @access private |
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*/ |
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function _toSyslog($priority) |
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{ |
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static $priorities = array( |
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PEAR_LOG_EMERG => LOG_EMERG, |
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PEAR_LOG_ALERT => LOG_ALERT, |
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PEAR_LOG_CRIT => LOG_CRIT, |
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PEAR_LOG_ERR => LOG_ERR, |
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PEAR_LOG_WARNING => LOG_WARNING, |
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PEAR_LOG_NOTICE => LOG_NOTICE, |
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PEAR_LOG_INFO => LOG_INFO, |
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PEAR_LOG_DEBUG => LOG_DEBUG |
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); |
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return $priorities[$priority]; |
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} |
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} |
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?> |