507 lines
16 KiB
PHP
507 lines
16 KiB
PHP
<?php
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require_once( 'config.php' );
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class Logger {
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private static $instance;
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const DEBUG = 1;
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const INFO = 0;
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const WARNING = -1;
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const ERROR = -2;
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const FATAL = -3;
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const PANIC = -4;
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const NOLOG = -5; // Special artificial level to prevent logging
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private $initialised = false;
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private $id = "web";
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private $idRoot = "web";
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private $idArgs = "";
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private $useErrorLog = true;
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private $level = self::INFO;
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private $termLevel = self::NOLOG;
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private $databaseLevel = self::NOLOG;
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private $fileLevel = self::NOLOG;
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private $weblogLevel = self::NOLOG;
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private $syslogLevel = self::NOLOG;
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private $effectiveLevel = self::NOLOG;
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private $hasTerm = false;
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private $logPath = ZM_PATH_LOGS;
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private $logFile = "";
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private $logFd = NULL;
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public static $codes = array(
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self::DEBUG => "DBG",
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self::INFO => "INF",
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self::WARNING => "WAR",
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self::ERROR => "ERR",
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self::FATAL => "FAT",
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self::PANIC => "PNC",
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self::NOLOG => "OFF",
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);
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private static $syslogPriorities = array(
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self::DEBUG => LOG_DEBUG,
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self::INFO => LOG_INFO,
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self::WARNING => LOG_WARNING,
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self::ERROR => LOG_ERR,
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self::FATAL => LOG_ERR,
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self::PANIC => LOG_ERR,
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);
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private static $phpErrorLevels = array(
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self::DEBUG => E_USER_NOTICE,
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self::INFO => E_USER_NOTICE,
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self::WARNING => E_USER_WARNING,
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self::ERROR => E_USER_WARNING,
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self::FATAL => E_USER_ERROR,
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self::PANIC => E_USER_ERROR,
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);
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private function __construct() {
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$this->hasTerm = (php_sapi_name() == 'cli' && empty($_SERVER['REMOTE_ADDR']));
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$this->logFile = $this->logPath."/".$this->id.".log";
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}
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public function __destruct() {
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$this->terminate();
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}
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public function initialise( $options=array() ) {
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if ( !empty($options['id']) )
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$this->id = $options['id'];
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//if ( isset($options['useErrorLog']) )
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//$this->useErrorLog = $options['useErrorLog'];
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if ( isset($options['logPath']) ) {
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$this->logPath = $options['logPath'];
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$tempLogFile = $this->logPath."/".$this->id.".log";
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}
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if ( isset($options['logFile']) )
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$tempLogFile = $options['logFile'];
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else
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$tempLogFile = $this->logPath."/".$this->id.".log";
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if ( !is_null($logFile = $this->getTargettedEnv('LOG_FILE')) )
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$tempLogFile = $logFile;
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$tempLevel = self::INFO;
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$tempTermLevel = $this->termLevel;
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$tempDatabaseLevel = $this->databaseLevel;
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$tempFileLevel = $this->fileLevel;
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$tempSyslogLevel = $this->syslogLevel;
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$tempWeblogLevel = $this->weblogLevel;
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if ( isset($options['termLevel']) )
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$tempTermLevel = $options['termLevel'];
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if ( isset($options['databaseLevel']) )
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$tempDatabaseLevel = $options['databaseLevel'];
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else
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$tempDatabaseLevel = ZM_LOG_LEVEL_DATABASE;
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if ( isset($options['fileLevel']) )
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$tempFileLevel = $options['fileLevel'];
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else
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$tempFileLevel = ZM_LOG_LEVEL_FILE;
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if ( isset($options['weblogLevel']) )
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$tempWeblogLevel = $options['weblogLevel'];
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else
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$tempWeblogLevel = ZM_LOG_LEVEL_WEBLOG;
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if ( isset($options['syslogLevel']) )
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$tempSyslogLevel = $options['syslogLevel'];
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else
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$tempSyslogLevel = ZM_LOG_LEVEL_SYSLOG;
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if ( $value = getenv('LOG_PRINT') )
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$tempTermLevel = $value ? self::DEBUG : self::NOLOG;
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if ( !is_null($level = $this->getTargettedEnv('LOG_LEVEL')) )
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$tempLevel = $level;
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if ( !is_null($level = $this->getTargettedEnv('LOG_LEVEL_TERM')) )
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$tempTermLevel = $level;
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if ( !is_null($level = $this->getTargettedEnv('LOG_LEVEL_DATABASE')) )
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$tempDatabaseLevel = $level;
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if ( !is_null($level = $this->getTargettedEnv('LOG_LEVEL_FILE')) )
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$tempFileLevel = $level;
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if ( !is_null($level = $this->getTargettedEnv('LOG_LEVEL_SYSLOG')) )
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$tempSyslogLevel = $level;
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if ( !is_null($level = $this->getTargettedEnv('LOG_LEVEL_WEBLOG')) )
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$tempWeblogLevel = $level;
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if ( ZM_LOG_DEBUG ) {
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foreach ( explode( '|', ZM_LOG_DEBUG_TARGET ) as $target ) {
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if ( $target == $this->id || $target == '_'.$this->id || $target == $this->idRoot || $target == '_'.$this->idRoot || $target == '' ) {
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if ( ZM_LOG_DEBUG_LEVEL > self::NOLOG ) {
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$tempLevel = $this->limit( ZM_LOG_DEBUG_LEVEL );
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if ( ZM_LOG_DEBUG_FILE != '' ) {
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$tempLogFile = ZM_LOG_DEBUG_FILE;
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$tempFileLevel = $tempLevel;
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}
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}
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}
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} // end foreach target
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} // end if DEBUG
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$this->logFile( $tempLogFile );
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$this->termLevel( $tempTermLevel );
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$this->databaseLevel( $tempDatabaseLevel );
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$this->fileLevel( $tempFileLevel );
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$this->syslogLevel( $tempSyslogLevel );
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$this->weblogLevel( $tempWeblogLevel );
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$this->level( $tempLevel );
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$this->initialised = true;
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Logger::Debug( "LogOpts: level=".self::$codes[$this->level]."/".self::$codes[$this->effectiveLevel].", screen=".self::$codes[$this->termLevel].", database=".self::$codes[$this->databaseLevel].", logfile=".self::$codes[$this->fileLevel]."->".$this->logFile.", weblog=".self::$codes[$this->weblogLevel].", syslog=".self::$codes[$this->syslogLevel] );
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}
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private function terminate() {
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if ( $this->initialised ) {
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if ( $this->fileLevel > self::NOLOG )
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$this->closeFile();
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if ( $this->syslogLevel > self::NOLOG )
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$this->closeSyslog();
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}
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$this->initialised = false;
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}
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private function limit( $level ) {
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if ( $level > self::DEBUG )
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return( self::DEBUG );
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if ( $level < self::NOLOG )
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return( self::NOLOG );
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return( $level );
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}
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private function getTargettedEnv( $name ) {
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$envName = $name."_".$this->id;
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$value = getenv( $envName );
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if ( $value === false && $this->id != $this->idRoot )
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$value = getenv( $name."_".$this->idRoot );
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if ( $value === false )
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$value = getenv( $name );
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return( $value !== false ? $value : NULL );
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}
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public static function fetch( $initialise=true ) {
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if ( !isset(self::$instance) ) {
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$class = __CLASS__;
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self::$instance = new $class;
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if ( $initialise )
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self::$instance->initialise( array( 'id'=>'web_php', 'syslogLevel'=>self::INFO, 'weblogLevel'=>self::INFO ) );
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}
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return self::$instance;
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}
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public static function Debug( $string ) {
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Logger::fetch()->logPrint( Logger::DEBUG, $string );
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}
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public function id( $id=NULL ) {
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if ( isset($id) && $this->id != $id ) {
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// Remove whitespace
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$id = preg_replace( '/\S/', '', $id );
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// Replace non-alphanum with underscore
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$id = preg_replace( '/[^a-zA-Z_]/', '_', $id );
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if ( $this->id != $id ) {
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$this->id = $this->idRoot = $id;
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if ( preg_match( '/^([^_]+)_(.+)$/', $id, $matches ) ) {
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$this->idRoot = $matches[1];
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$this->idArgs = $matches[2];
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}
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}
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}
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return( $this->id );
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}
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public function level( $level ) {
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if ( isset($level) ) {
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$lastLevel = $this->level;
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$this->level = $this->limit($level);
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$this->effectiveLevel = self::NOLOG;
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if ( $this->termLevel > $this->effectiveLevel )
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$this->effectiveLevel = $this->termLevel;
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if ( $this->databaseLevel > $this->effectiveLevel )
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$this->effectiveLevel = $this->databaseLevel;
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if ( $this->fileLevel > $this->effectiveLevel )
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$this->effectiveLevel = $this->fileLevel;
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if ( $this->weblogLevel > $this->effectiveLevel )
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$this->effectiveLevel = $this->weblogLevel;
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if ( $this->syslogLevel > $this->effectiveLevel )
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$this->effectiveLevel = $this->syslogLevel;
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if ( $this->effectiveLevel > $this->level )
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$this->effectiveLevel = $this->level;
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if ( !$this->hasTerm ) {
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if ( $lastLevel < self::DEBUG && $this->level >= self::DEBUG ) {
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$this->savedErrorReporting = error_reporting( E_ALL );
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$this->savedDisplayErrors = ini_set( 'display_errors', true );
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} elseif ( $lastLevel >= self::DEBUG && $this->level < self::DEBUG ) {
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error_reporting( $this->savedErrorReporting );
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ini_set( 'display_errors', $this->savedDisplayErrors );
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}
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}
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}
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return( $this->level );
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}
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public function debugOn() {
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return( $this->effectiveLevel >= self::DEBUG );
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}
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public function termLevel( $termLevel ) {
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if ( isset($termLevel) ) {
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$termLevel = $this->limit($termLevel);
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if ( $this->termLevel != $termLevel )
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$this->termLevel = $termLevel;
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}
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return( $this->termLevel );
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}
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public function databaseLevel( $databaseLevel=NULL ) {
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if ( !is_null($databaseLevel) ) {
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$databaseLevel = $this->limit($databaseLevel);
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if ( $this->databaseLevel != $databaseLevel ) {
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$this->databaseLevel = $databaseLevel;
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if ( $this->databaseLevel > self::NOLOG ) {
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if ( (include_once 'database.php') === FALSE ) {
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$this->databaseLevel = self::NOLOG;
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Warning( "Unable to write log entries to DB, database.php not found" );
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}
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}
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}
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}
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return( $this->databaseLevel );
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}
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public function fileLevel( $fileLevel ) {
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if ( isset($fileLevel) ) {
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$fileLevel = $this->limit($fileLevel);
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if ( $this->fileLevel != $fileLevel ) {
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if ( $this->fileLevel > self::NOLOG )
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$this->closeFile();
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$this->fileLevel = $fileLevel;
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if ( $this->fileLevel > self::NOLOG )
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$this->openFile();
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}
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}
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return( $this->fileLevel );
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}
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public function weblogLevel( $weblogLevel ) {
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if ( isset($weblogLevel) ) {
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$weblogLevel = $this->limit($weblogLevel);
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if ( $this->weblogLevel != $weblogLevel ) {
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if ( $weblogLevel > self::NOLOG && $this->weblogLevel <= self::NOLOG ) {
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$this->savedLogErrors = ini_set( 'log_errors', true );
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} elseif ( $weblogLevel <= self::NOLOG && $this->weblogLevel > self::NOLOG ) {
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ini_set( 'log_errors', $this->savedLogErrors );
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}
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$this->weblogLevel = $weblogLevel;
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}
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}
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return( $this->weblogLevel );
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}
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public function syslogLevel( $syslogLevel ) {
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if ( isset($syslogLevel) ) {
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$syslogLevel = $this->limit($syslogLevel);
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if ( $this->syslogLevel != $syslogLevel ) {
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if ( $this->syslogLevel > self::NOLOG )
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$this->closeSyslog();
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$this->syslogLevel = $syslogLevel;
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if ( $this->syslogLevel > self::NOLOG )
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$this->openSyslog();
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}
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}
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return( $this->syslogLevel );
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}
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private function openSyslog() {
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openlog( $this->id, LOG_PID|LOG_NDELAY, LOG_LOCAL1 );
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}
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private function closeSyslog() {
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closelog();
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}
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private function logFile( $logFile ) {
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if ( preg_match( '/^(.+)\+$/', $logFile, $matches ) )
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$this->logFile = $matches[1].'.'.getmypid();
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else
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$this->logFile = $logFile;
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}
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private function openFile() {
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if ( !$this->useErrorLog ) {
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if ( $this->logFd = fopen( $this->logFile, 'a+' ) ) {
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if ( strnatcmp( phpversion(), '5.2.0' ) >= 0 ) {
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$error = error_get_last();
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trigger_error( "Can't open log file '$logFile': ".$error['message'].' @ '.$error['file'].'/'.$error['line'], E_USER_ERROR );
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}
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$this->fileLevel = self::NOLOG;
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}
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}
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}
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private function closeFile() {
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if ( $this->logFd )
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fclose( $this->logFd );
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}
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public function logPrint( $level, $string, $file=NULL, $line=NULL ) {
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if ( $level <= $this->effectiveLevel ) {
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$string = preg_replace( '/[\r\n]+$/', '', $string );
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$code = self::$codes[$level];
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$time = gettimeofday();
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$message = sprintf( '%s.%06d %s[%d].%s [%s]', strftime( '%x %H:%M:%S', $time['sec'] ), $time['usec'], $this->id, getmypid(), $code, $string );
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if ( is_null($file) ) {
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if ( $this->useErrorLog || $this->databaseLevel > self::NOLOG ) {
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$backTrace = debug_backtrace();
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$file = $backTrace[1]['file'];
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$line = $backTrace[1]['line'];
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if ( $this->hasTerm )
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$rootPath = getcwd();
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else
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$rootPath = $_SERVER['DOCUMENT_ROOT'];
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$file = preg_replace( '/^'.addcslashes($rootPath,'/').'\/?/', '', $file );
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}
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}
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if ( $this->useErrorLog )
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$message .= " at ".$file." line ".$line;
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else
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$message = $message;
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if ( $level <= $this->termLevel )
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if ( $this->hasTerm )
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print( $message."\n" );
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else
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print( preg_replace( "/\n/", '<br/>', htmlspecialchars($message) ).'<br/>' );
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if ( $level <= $this->fileLevel )
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if ( $this->useErrorLog ) {
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if ( !error_log( $message."\n", 3, $this->logFile ) ) {
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if ( strnatcmp( phpversion(), '5.2.0' ) >= 0 ) {
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$error = error_get_last();
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trigger_error( "Can't write to log file '".$this->logFile."': ".$error['message'].' @ '.$error['file'].'/'.$error['line'], E_USER_ERROR );
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}
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}
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} elseif ( $this->logFd ) {
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fprintf( $this->logFd, $message."\n" );
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}
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$message = $code.' ['.$string.']';
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if ( $level <= $this->syslogLevel )
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syslog( self::$syslogPriorities[$level], $message );
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if ( $level <= $this->databaseLevel ) {
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try {
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global $dbConn;
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$sql = "INSERT INTO Logs ( TimeKey, Component, Pid, Level, Code, Message, File, Line ) values ( ?, ?, ?, ?, ?, ?, ?, ? )";
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$stmt = $dbConn->prepare( $sql );
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$result = $stmt->execute( array( sprintf( "%d.%06d", $time['sec'], $time['usec'] ), $this->id, getmypid(), $level, $code, $string, $file, $line ) );
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} catch(PDOException $ex) {
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$this->databaseLevel = self::NOLOG;
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Fatal( "Can't write log entry '$sql': ". $ex->getMessage() );
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}
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}
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// This has to be last as trigger_error can be fatal
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if ( $level <= $this->weblogLevel ) {
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if ( $this->useErrorLog )
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error_log( $message, 0 );
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else
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trigger_error( $message, self::$phpErrorLevels[$level] );
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}
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}
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}
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};
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function logInit( $options=array() ) {
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$logger = Logger::fetch();
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$logger->initialise( $options );
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set_error_handler( 'ErrorHandler' );
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}
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function logToDatabase( $level=NULL ) {
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return( Logger::fetch()->databaseLevel( $level ) );
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}
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function Mark( $level=Logger::DEBUG, $tag='Mark' ) {
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Logger::fetch()->logPrint( $level, $tag );
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}
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function Dump( &$var, $label='VAR' ) {
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ob_start();
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print( $label.' => ' );
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print_r( $var );
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Logger::fetch()->logPrint( Logger::DEBUG, ob_get_clean() );
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}
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function Info( $string ) {
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Logger::fetch()->logPrint( Logger::INFO, $string );
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}
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function Warning( $string ) {
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Logger::fetch()->logPrint( Logger::WARNING, $string );
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}
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function Error( $string ) {
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Logger::fetch()->logPrint( Logger::ERROR, $string );
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}
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function Fatal( $string ) {
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Logger::fetch()->logPrint( Logger::FATAL, $string );
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die( htmlentities($string) );
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}
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function Panic( $string ) {
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if ( true ) {
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// Use builtin function
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ob_start();
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debug_print_backtrace();
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$backtrace = "\n".ob_get_clean();
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} else {
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// Roll your own
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$backtrace = '';
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$frames = debug_backtrace();
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for ( $i = 0; $i < count($frames); $i++ ) {
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$frame = $frames[$i];
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$backtrace .= sprintf( "\n#%d %s() at %s/%d", $i, $frame['function'], $frame['file'], $frame['line'] );
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}
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}
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Logger::fetch()->logPrint( Logger::PANIC, $string.$backtrace );
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die( $string );
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}
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function ErrorHandler( $error, $string, $file, $line ) {
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if ( ! (error_reporting() & $error) ) {
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// This error code is not included in error_reporting
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return( false );
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}
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switch ( $error ) {
|
|
case E_USER_ERROR:
|
|
Logger::fetch()->logPrint( Logger::FATAL, $string, $file, $line );
|
|
break;
|
|
|
|
case E_USER_WARNING:
|
|
Logger::fetch()->logPrint( Logger::ERROR, $string, $file, $line );
|
|
break;
|
|
|
|
case E_USER_NOTICE:
|
|
Logger::fetch()->logPrint( Logger::WARNING, $string, $file, $line );
|
|
break;
|
|
|
|
default:
|
|
Panic( "Unknown error type: [$error] $string" );
|
|
break;
|
|
}
|
|
return( true );
|
|
}
|
|
|
|
?>
|