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|
<?php
/**
* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
* SPDX-License-Identifier: AGPL-3.0-only
*/
namespace OC\Log;
use OC\SystemConfig;
use OCP\ILogger;
use OCP\Log\IFileBased;
use OCP\Log\IWriter;
/**
* logging utilities
*
* Log is saved at data/nextcloud.log (on default)
*/
class File extends LogDetails implements IWriter, IFileBased {
protected string $logFile;
protected int $logFileMode;
public function __construct(
string $path,
string $fallbackPath,
private SystemConfig $config,
) {
parent::__construct($config);
$this->logFile = $path;
if (!file_exists($this->logFile)) {
if (
(
!is_writable(dirname($this->logFile))
|| !touch($this->logFile)
)
&& $fallbackPath !== ''
) {
$this->logFile = $fallbackPath;
}
}
$this->logFileMode = $config->getValue('logfilemode', 0640);
}
/**
* write a message in the log
* @param string|array $message
*/
public function write(string $app, $message, int $level): void {
$entry = $this->logDetailsAsJSON($app, $message, $level);
$handle = @fopen($this->logFile, 'a');
if ($this->logFileMode > 0 && is_file($this->logFile) && (fileperms($this->logFile) & 0777) != $this->logFileMode) {
@chmod($this->logFile, $this->logFileMode);
}
if ($handle) {
fwrite($handle, $entry."\n");
fclose($handle);
} else {
// Fall back to error_log
error_log($entry);
}
if (php_sapi_name() === 'cli-server') {
if (!\is_string($message)) {
$message = json_encode($message);
}
error_log($message, 4);
}
}
/**
* get entries from the log in reverse chronological order
*/
public function getEntries(int $limit = 50, int $offset = 0): array {
$minLevel = $this->config->getValue("loglevel", ILogger::WARN);
$entries = [];
$handle = @fopen($this->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 && ($limit === null || $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;
}
public function getLogFilePath():string {
return $this->logFile;
}
}
|
