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+++ b/library/log4php/appenders/LoggerAppenderSyslog.php
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+<?php
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Log events to a system log using the PHP syslog() function.
+ *
+ * This appenders requires a layout.
+ *
+ * ## Configurable parameters: ##
+ *
+ * - **ident** - The ident of the syslog message.
+ * - **priority** - The priority for the syslog message (used when overriding
+ * priority).
+ * - **facility** - The facility for the syslog message
+ * - **overridePriority** - If set to true, the message priority will always
+ * use the value defined in {@link $priority}, otherwise the priority will
+ * be determined by the message's log level.
+ * - **option** - The option value for the syslog message.
+ *
+ * Recognised syslog options are:
+ *
+ * - CONS - if there is an error while sending data to the system logger, write directly to the system console
+ * - NDELAY - open the connection to the logger immediately
+ * - ODELAY - delay opening the connection until the first message is logged (default)
+ * - PERROR - print log message also to standard error
+ * - PID - include PID with each message
+ *
+ * Multiple options can be set by delimiting them with a pipe character,
+ * e.g.: "CONS|PID|PERROR".
+ *
+ * Recognised syslog priorities are:
+ *
+ * - EMERG
+ * - ALERT
+ * - CRIT
+ * - ERR
+ * - WARNING
+ * - NOTICE
+ * - INFO
+ * - DEBUG
+ *
+ * Levels are mapped as follows:
+ *
+ * - <b>FATAL</b> to LOG_ALERT
+ * - <b>ERROR</b> to LOG_ERR
+ * - <b>WARN</b> to LOG_WARNING
+ * - <b>INFO</b> to LOG_INFO
+ * - <b>DEBUG</b> to LOG_DEBUG
+ * - <b>TRACE</b> to LOG_DEBUG
+ *
+ * @version $Revision: 1337820 $
+ * @package log4php
+ * @subpackage appenders
+ * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
+ * @link http://logging.apache.org/log4php/docs/appenders/syslog.html Appender documentation
+ */
+class LoggerAppenderSyslog extends LoggerAppender {
+
+ /**
+ * The ident string is added to each message. Typically the name of your application.
+ *
+ * @var string
+ */
+ protected $ident = "Apache log4php";
+
+ /**
+ * The syslog priority to use when overriding priority. This setting is
+ * required if {@link overridePriority} is set to true.
+ *
+ * @var string
+ */
+ protected $priority;
+
+ /**
+ * The option used when opening the syslog connection.
+ *
+ * @var string
+ */
+ protected $option = 'PID|CONS';
+
+ /**
+ * The facility value indicates the source of the message.
+ *
+ * @var string
+ */
+ protected $facility = 'USER';
+
+ /**
+ * If set to true, the message priority will always use the value defined
+ * in {@link $priority}, otherwise the priority will be determined by the
+ * message's log level.
+ *
+ * @var string
+ */
+ protected $overridePriority = false;
+
+ /**
+ * Holds the int value of the {@link $priority}.
+ * @var int
+ */
+ private $intPriority;
+
+ /**
+ * Holds the int value of the {@link $facility}.
+ * @var int
+ */
+ private $intFacility;
+
+ /**
+ * Holds the int value of the {@link $option}.
+ * @var int
+ */
+ private $intOption;
+
+ /**
+ * Sets the {@link $ident}.
+ *
+ * @param string $ident
+ */
+ public function setIdent($ident) {
+ $this->ident = $ident;
+ }
+
+ /**
+ * Sets the {@link $priority}.
+ *
+ * @param string $priority
+ */
+ public function setPriority($priority) {
+ $this->priority = $priority;
+ }
+
+ /**
+ * Sets the {@link $facility}.
+ *
+ * @param string $facility
+ */
+ public function setFacility($facility) {
+ $this->facility = $facility;
+ }
+
+ /**
+ * Sets the {@link $overridePriority}.
+ *
+ * @param string $overridePriority
+ */
+ public function setOverridePriority($overridePriority) {
+ $this->overridePriority = $overridePriority;
+ }
+
+ /**
+ * Sets the 'option' parameter.
+ *
+ * @param string $option
+ */
+ public function setOption($option) {
+ $this->option = $option;
+ }
+
+ /**
+ * Returns the 'ident' parameter.
+ *
+ * @return string $ident
+ */
+ public function getIdent() {
+ return $this->ident;
+ }
+
+ /**
+ * Returns the 'priority' parameter.
+ *
+ * @return string
+ */
+ public function getPriority() {
+ return $this->priority;
+ }
+
+ /**
+ * Returns the 'facility' parameter.
+ *
+ * @return string
+ */
+ public function getFacility() {
+ return $this->facility;
+ }
+
+ /**
+ * Returns the 'overridePriority' parameter.
+ *
+ * @return string
+ */
+ public function getOverridePriority() {
+ return $this->overridePriority;
+ }
+
+ /**
+ * Returns the 'option' parameter.
+ *
+ * @return string
+ */
+ public function getOption() {
+ return $this->option;
+ }
+
+
+ public function activateOptions() {
+ $this->intPriority = $this->parsePriority();
+ $this->intOption = $this->parseOption();
+ $this->intFacility = $this->parseFacility();
+
+ $this->closed = false;
+ }
+
+ public function close() {
+ if ($this->closed != true) {
+ closelog();
+ $this->closed = true;
+ }
+ }
+
+ /**
+ * Appends the event to syslog.
+ *
+ * Log is opened and closed each time because if it is not closed, it
+ * can cause the Apache httpd server to log to whatever ident/facility
+ * was used in openlog().
+ *
+ * @see http://www.php.net/manual/en/function.syslog.php#97843
+ */
+ public function append(LoggerLoggingEvent $event) {
+ $priority = $this->getSyslogPriority($event->getLevel());
+ $message = $this->layout->format($event);
+
+ openlog($this->ident, $this->intOption, $this->intFacility);
+ syslog($priority, $message);
+ closelog();
+ }
+
+ /** Determines which syslog priority to use based on the given level. */
+ private function getSyslogPriority(LoggerLevel $level) {
+ if ($this->overridePriority) {
+ return $this->intPriority;
+ }
+ return $level->getSyslogEquivalent();
+ }
+
+ /** Parses a syslog option string and returns the correspodning int value. */
+ private function parseOption() {
+ $value = 0;
+ $options = explode('|', $this->option);
+
+ foreach ($options as $option) {
+ if (!empty($option)) {
+ $constant = "LOG_" . trim($option);
+ if (defined($constant)) {
+ $value |= constant($constant);
+ } else {
+ trigger_error("log4php: Invalid syslog option provided: $option. Whole option string: {$this->option}.", E_USER_WARNING);
+ }
+ }
+ }
+ return $value;
+ }
+
+ /** Parses the facility string and returns the corresponding int value. */
+ private function parseFacility() {
+ if (!empty($this->facility)) {
+ $constant = "LOG_" . trim($this->facility);
+ if (defined($constant)) {
+ return constant($constant);
+ } else {
+ trigger_error("log4php: Invalid syslog facility provided: {$this->facility}.", E_USER_WARNING);
+ }
+ }
+ }
+
+ /** Parses the priority string and returns the corresponding int value. */
+ private function parsePriority() {
+ if (!empty($this->priority)) {
+ $constant = "LOG_" . trim($this->priority);
+ if (defined($constant)) {
+ return constant($constant);
+ } else {
+ trigger_error("log4php: Invalid syslog priority provided: {$this->priority}.", E_USER_WARNING);
+ }
+ }
+ }
+}