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<?php
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Composer;
use Composer\IO\IOInterface;
use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Composer\Util\Silencer;
use Symfony\Component\Finder\Finder;
/**
* Reads/writes to a filesystem cache
*
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
class Cache
{
/** @var bool|null */
private static $cacheCollected = null;
/** @var IOInterface */
private $io;
/** @var string */
private $root;
/** @var ?bool */
private $enabled = null;
/** @var string */
private $allowlist;
/** @var Filesystem */
private $filesystem;
/** @var bool */
private $readOnly;
/**
* @param IOInterface $io
* @param string $cacheDir location of the cache
* @param string $allowlist List of characters that are allowed in path names (used in a regex character class)
* @param Filesystem $filesystem optional filesystem instance
* @param bool $readOnly whether the cache is in readOnly mode
*/
public function __construct(IOInterface $io, $cacheDir, $allowlist = 'a-z0-9.', Filesystem $filesystem = null, $readOnly = false)
{
$this->io = $io;
$this->root = rtrim($cacheDir, '/\\') . '/';
$this->allowlist = $allowlist;
$this->filesystem = $filesystem ?: new Filesystem();
$this->readOnly = (bool) $readOnly;
if (!self::isUsable($cacheDir)) {
$this->enabled = false;
}
}
/**
* @param bool $readOnly
*
* @return void
*/
public function setReadOnly($readOnly)
{
$this->readOnly = (bool) $readOnly;
}
/**
* @return bool
*/
public function isReadOnly()
{
return $this->readOnly;
}
/**
* @param string $path
*
* @return bool
*/
public static function isUsable($path)
{
return !Preg::isMatch('{(^|[\\\\/])(\$null|nul|NUL|/dev/null)([\\\\/]|$)}', $path);
}
/**
* @return bool
*/
public function isEnabled()
{
if ($this->enabled === null) {
$this->enabled = true;
if (
(!is_dir($this->root) && !Silencer::call('mkdir', $this->root, 0777, true))
|| !is_writable($this->root)
) {
$this->io->writeError('<warning>Cannot create cache directory ' . $this->root . ', or directory is not writable. Proceeding without cache</warning>');
$this->enabled = false;
}
}
return $this->enabled;
}
/**
* @return string
*/
public function getRoot()
{
return $this->root;
}
/**
* @param string $file
*
* @return string|false
*/
public function read($file)
{
if ($this->isEnabled()) {
$file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
if (file_exists($this->root . $file)) {
$this->io->writeError('Reading '.$this->root . $file.' from cache', true, IOInterface::DEBUG);
return file_get_contents($this->root . $file);
}
}
return false;
}
/**
* @param string $file
* @param string $contents
*
* @return bool
*/
public function write($file, $contents)
{
if ($this->isEnabled() && !$this->readOnly) {
$file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
$this->io->writeError('Writing '.$this->root . $file.' into cache', true, IOInterface::DEBUG);
$tempFileName = $this->root . $file . uniqid('.', true) . '.tmp';
try {
return file_put_contents($tempFileName, $contents) !== false && rename($tempFileName, $this->root . $file);
} catch (\ErrorException $e) {
$this->io->writeError('<warning>Failed to write into cache: '.$e->getMessage().'</warning>', true, IOInterface::DEBUG);
if (Preg::isMatch('{^file_put_contents\(\): Only ([0-9]+) of ([0-9]+) bytes written}', $e->getMessage(), $m)) {
// Remove partial file.
unlink($tempFileName);
$message = sprintf(
'<warning>Writing %1$s into cache failed after %2$u of %3$u bytes written, only %4$u bytes of free space available</warning>',
$tempFileName,
$m[1],
$m[2],
@disk_free_space(dirname($tempFileName))
);
$this->io->writeError($message);
return false;
}
throw $e;
}
}
return false;
}
/**
* Copy a file into the cache
*
* @param string $file
* @param string $source
*
* @return bool
*/
public function copyFrom($file, $source)
{
if ($this->isEnabled() && !$this->readOnly) {
$file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
$this->filesystem->ensureDirectoryExists(dirname($this->root . $file));
if (!file_exists($source)) {
$this->io->writeError('<error>'.$source.' does not exist, can not write into cache</error>');
} elseif ($this->io->isDebug()) {
$this->io->writeError('Writing '.$this->root . $file.' into cache from '.$source);
}
return copy($source, $this->root . $file);
}
return false;
}
/**
* Copy a file out of the cache
*
* @param string $file
* @param string $target
*
* @return bool
*/
public function copyTo($file, $target)
{
if ($this->isEnabled()) {
$file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
if (file_exists($this->root . $file)) {
try {
touch($this->root . $file, filemtime($this->root . $file), time());
} catch (\ErrorException $e) {
// fallback in case the above failed due to incorrect ownership
// see https://github.com/composer/composer/issues/4070
Silencer::call('touch', $this->root . $file);
}
$this->io->writeError('Reading '.$this->root . $file.' from cache', true, IOInterface::DEBUG);
return copy($this->root . $file, $target);
}
}
return false;
}
/**
* @return bool
*/
public function gcIsNecessary()
{
if (self::$cacheCollected) {
return false;
}
self::$cacheCollected = true;
if (Platform::getEnv('COMPOSER_TEST_SUITE')) {
return false;
}
if (PHP_VERSION_ID > 70000) {
return !random_int(0, 50);
}
return !mt_rand(0, 50);
}
/**
* @param string $file
*
* @return bool
*/
public function remove($file)
{
if ($this->isEnabled()) {
$file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
if (file_exists($this->root . $file)) {
return $this->filesystem->unlink($this->root . $file);
}
}
return false;
}
/**
* @return bool
*/
public function clear()
{
if ($this->isEnabled()) {
$this->filesystem->emptyDirectory($this->root);
return true;
}
return false;
}
/**
* @param string $file
* @return int|false
* @phpstan-return int<0, max>|false
*/
public function getAge($file)
{
if ($this->isEnabled()) {
$file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
if (file_exists($this->root . $file) && ($mtime = filemtime($this->root . $file)) !== false) {
return abs(time() - $mtime);
}
}
return false;
}
/**
* @param int $ttl
* @param int $maxSize
*
* @return bool
*/
public function gc($ttl, $maxSize)
{
if ($this->isEnabled()) {
$expire = new \DateTime();
$expire->modify('-'.$ttl.' seconds');
$finder = $this->getFinder()->date('until '.$expire->format('Y-m-d H:i:s'));
foreach ($finder as $file) {
$this->filesystem->unlink($file->getPathname());
}
$totalSize = $this->filesystem->size($this->root);
if ($totalSize > $maxSize) {
$iterator = $this->getFinder()->sortByAccessedTime()->getIterator();
while ($totalSize > $maxSize && $iterator->valid()) {
$filepath = $iterator->current()->getPathname();
$totalSize -= $this->filesystem->size($filepath);
$this->filesystem->unlink($filepath);
$iterator->next();
}
}
self::$cacheCollected = true;
return true;
}
return false;
}
/**
* @param string $file
*
* @return string|false
*/
public function sha1($file)
{
if ($this->isEnabled()) {
$file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
if (file_exists($this->root . $file)) {
return sha1_file($this->root . $file);
}
}
return false;
}
/**
* @param string $file
*
* @return string|false
*/
public function sha256($file)
{
if ($this->isEnabled()) {
$file = Preg::replace('{[^'.$this->allowlist.']}i', '-', $file);
if (file_exists($this->root . $file)) {
return hash_file('sha256', $this->root . $file);
}
}
return false;
}
/**
* @return Finder
*/
protected function getFinder()
{
return Finder::create()->in($this->root)->files();
}
}
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| Autoload | Folder | 0755 |
|
|
| CaBundle | Folder | 0755 |
|
|
| Command | Folder | 0755 |
|
|
| Config | Folder | 0755 |
|
|
| Console | Folder | 0755 |
|
|
| DependencyResolver | Folder | 0755 |
|
|
| Downloader | Folder | 0755 |
|
|
| EventDispatcher | Folder | 0755 |
|
|
| Exception | Folder | 0755 |
|
|
| Filter | Folder | 0755 |
|
|
| IO | Folder | 0755 |
|
|
| Installer | Folder | 0755 |
|
|
| Json | Folder | 0755 |
|
|
| MetadataMinifier | Folder | 0755 |
|
|
| Package | Folder | 0755 |
|
|
| Pcre | Folder | 0755 |
|
|
| Platform | Folder | 0755 |
|
|
| Plugin | Folder | 0755 |
|
|
| Question | Folder | 0755 |
|
|
| Repository | Folder | 0755 |
|
|
| Script | Folder | 0755 |
|
|
| SelfUpdate | Folder | 0755 |
|
|
| Semver | Folder | 0755 |
|
|
| Spdx | Folder | 0755 |
|
|
| Util | Folder | 0755 |
|
|
| XdebugHandler | Folder | 0755 |
|
|
| Cache.php | File | 10.14 KB | 0644 |
|
| Composer.php | File | 6.51 KB | 0644 |
|
| Config.php | File | 22.18 KB | 0644 |
|
| Factory.php | File | 27.94 KB | 0644 |
|
| InstalledVersions.php | File | 14.64 KB | 0644 |
|
| Installer.php | File | 51.79 KB | 0644 |
|
| autoload.php | File | 24.98 KB | 0644 |
|