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Diffstat (limited to 'inc/Log/syslog.php')
| -rwxr-xr-x | inc/Log/syslog.php | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/inc/Log/syslog.php b/inc/Log/syslog.php new file mode 100755 index 00000000000..4bafbaa2d9a --- /dev/null +++ b/inc/Log/syslog.php @@ -0,0 +1,160 @@ +<?php +/** + * $Header: /repository/pear/Log/Log/syslog.php,v 1.22 2004/01/19 08:02:40 jon Exp $ + * $Horde: horde/lib/Log/syslog.php,v 1.6 2000/06/28 21:36:13 jon Exp $ + * + * @version $Revision: 1.22 $ + * @package Log + */ + +/** + * The Log_syslog class is a concrete implementation of the Log:: + * abstract class which sends messages to syslog on UNIX-like machines + * (PHP emulates this with the Event Log on Windows machines). + * + * @author Chuck Hagenbuch <chuck@horde.org> + * @since Horde 1.3 + * @since Log 1.0 + * @package Log + * + * @example syslog.php Using the syslog handler. + */ +class Log_syslog extends Log +{ + /** + * Integer holding the log facility to use. + * @var string + * @access private + */ + var $_name = LOG_SYSLOG; + + /** + * Constructs a new syslog object. + * + * @param string $name The syslog facility. + * @param string $ident The identity string. + * @param array $conf The configuration array. + * @param int $level Log messages up to and including this level. + * @access public + */ + function Log_syslog($name, $ident = '', $conf = array(), + $level = PEAR_LOG_DEBUG) + { + /* Ensure we have a valid integer value for $name. */ + if (empty($name) || !is_int($name)) { + $name = LOG_SYSLOG; + } + + $this->_id = md5(microtime()); + $this->_name = $name; + $this->_ident = $ident; + $this->_mask = Log::UPTO($level); + } + + /** + * Opens a connection to the system logger, if it has not already + * been opened. This is implicitly called by log(), if necessary. + * @access public + */ + function open() + { + if (!$this->_opened) { + openlog($this->_ident, LOG_PID, $this->_name); + $this->_opened = true; + } + + return $this->_opened; + } + + /** + * Closes the connection to the system logger, if it is open. + * @access public + */ + function close() + { + if ($this->_opened) { + closelog(); + $this->_opened = false; + } + + return ($this->_opened === false); + } + + /** + * Sends $message to the currently open syslog connection. Calls + * open() if necessary. Also passes the message along to any Log_observer + * instances that are observing this Log. + * + * @param mixed $message String or object containing the message to log. + * @param int $priority (optional) The priority of the message. Valid + * values are: PEAR_LOG_EMERG, PEAR_LOG_ALERT, + * PEAR_LOG_CRIT, PEAR_LOG_ERR, PEAR_LOG_WARNING, + * PEAR_LOG_NOTICE, PEAR_LOG_INFO, and PEAR_LOG_DEBUG. + * @return boolean True on success or false on failure. + * @access public + */ + function log($message, $priority = null) + { + /* If a priority hasn't been specified, use the default value. */ + if ($priority === null) { + $priority = $this->_priority; + } + + /* Abort early if the priority is above the maximum logging level. */ + if (!$this->_isMasked($priority)) { + return false; + } + + /* If the connection isn't open and can't be opened, return failure. */ + if (!$this->_opened && !$this->open()) { + return false; + } + + /* Extract the string representation of the message. */ + $message = $this->_extractMessage($message); + + if (!syslog($this->_toSyslog($priority), $message)) { + return false; + } + + $this->_announce(array('priority' => $priority, 'message' => $message)); + + return true; + } + + /** + * Converts a PEAR_LOG_* constant into a syslog LOG_* constant. + * + * This function exists because, under Windows, not all of the LOG_* + * constants have unique values. Instead, the PEAR_LOG_* were introduced + * for global use, with the conversion to the LOG_* constants kept local to + * to the syslog driver. + * + * @param int $priority PEAR_LOG_* value to convert to LOG_* value. + * + * @return The LOG_* representation of $priority. + * + * @access private + */ + function _toSyslog($priority) + { + static $priorities = array( + PEAR_LOG_EMERG => LOG_EMERG, + PEAR_LOG_ALERT => LOG_ALERT, + PEAR_LOG_CRIT => LOG_CRIT, + PEAR_LOG_ERR => LOG_ERR, + PEAR_LOG_WARNING => LOG_WARNING, + PEAR_LOG_NOTICE => LOG_NOTICE, + PEAR_LOG_INFO => LOG_INFO, + PEAR_LOG_DEBUG => LOG_DEBUG + ); + + /* If we're passed an unknown priority, default to LOG_INFO. */ + if (!is_int($priority) || !in_array($priority, $priorities)) { + return LOG_INFO; + } + + return $priorities[$priority]; + } +} +?> |