1 files changed, 112 insertions, 0 deletions
diff --git a/lib/private/log/owncloud.php b/lib/private/log/owncloud.php
new file mode 100644
index 00000000000..d16b9537a16
--- /dev/null
+++ b/lib/private/log/owncloud.php
@@ -0,0 +1,112 @@
+<?php
+/**
+ * ownCloud
+ *
+ * @author Robin Appelman
+ * @copyright 2012 Robin Appelman icewind1991@gmail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * logging utilities
+ *
+ * Log is saved at data/owncloud.log (on default)
+ */
+
+class OC_Log_Owncloud {
+	static protected $logFile;
+
+	/**
+	 * Init class data
+	 */
+	public static function init() {
+		$defaultLogFile = OC_Config::getValue("datadirectory", OC::$SERVERROOT.'/data').'/owncloud.log';
+		self::$logFile = OC_Config::getValue("logfile", $defaultLogFile);
+		if (!file_exists(self::$logFile)) {
+			self::$logFile = $defaultLogFile;
+		}
+	}
+
+	/**
+	 * write a message in the log
+	 * @param string $app
+	 * @param string $message
+	 * @param int $level
+	 */
+	public static function write($app, $message, $level) {
+		$minLevel=min(OC_Config::getValue( "loglevel", OC_Log::WARN ), OC_Log::ERROR);
+		if($level>=$minLevel) {
+			// default to ISO8601
+			$format = OC_Config::getValue('logdateformat', 'c');
+			$time = date($format, time());
+			$entry=array('app'=>$app, 'message'=>$message, 'level'=>$level, 'time'=> $time);
+			$handle = @fopen(self::$logFile, 'a');
+			if ($handle) {
+				fwrite($handle, json_encode($entry)."\n");
+				fclose($handle);
+			}
+		}
+	}
+
+	/**
+	 * get entries from the log in reverse chronological order
+	 * @param int $limit
+	 * @param int $offset
+	 * @return array
+	 */
+	public static function getEntries($limit=50, $offset=0) {
+		self::init();
+		$minLevel=OC_Config::getValue( "loglevel", OC_Log::WARN );
+		$entries = array();
+		$handle = @fopen(self::$logFile, 'rb');
+		if ($handle) {
+			fseek($handle, 0, SEEK_END);
+			$pos = ftell($handle);
+			$line = '';
+			$entriesCount = 0;
+			$lines = 0;
+			// Loop through each character of the file looking for new lines
+			while ($pos >= 0 && $entriesCount < $limit) {
+				fseek($handle, $pos);
+				$ch = fgetc($handle);
+				if ($ch == "\n" || $pos == 0) {
+					if ($line != '') {
+						// Add the first character if at the start of the file,
+						// because it doesn't hit the else in the loop
+						if ($pos == 0) {
+							$line = $ch.$line;
+						}
+						$entry = json_decode($line);
+						// Add the line as an entry if it is passed the offset and is equal or above the log level
+						if ($entry->level >= $minLevel) {
+							$lines++;
+							if ($lines > $offset) {
+								$entries[] = $entry;
+								$entriesCount++;
+							}
+						}
+						$line = '';
+					}
+				} else {
+					$line = $ch.$line;
+				}
+				$pos--;
+			}
+			fclose($handle);
+		}
+		return $entries;
+	}
+}