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<?php declare(strict_types=1);
/*
* 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\Downloader;
use Composer\Package\PackageInterface;
use Composer\Util\Platform;
use Symfony\Component\Finder\Finder;
use React\Promise\PromiseInterface;
use Composer\DependencyResolver\Operation\InstallOperation;
/**
* Base downloader for archives
*
* @author Kirill chEbba Chebunin <iam@chebba.org>
* @author Jordi Boggiano <j.boggiano@seld.be>
* @author François Pluchino <francois.pluchino@opendisplay.com>
*/
abstract class ArchiveDownloader extends FileDownloader
{
/**
* @var array<string, true>
*/
protected $cleanupExecuted = [];
public function prepare(string $type, PackageInterface $package, string $path, ?PackageInterface $prevPackage = null): PromiseInterface
{
unset($this->cleanupExecuted[$package->getName()]);
return parent::prepare($type, $package, $path, $prevPackage);
}
public function cleanup(string $type, PackageInterface $package, string $path, ?PackageInterface $prevPackage = null): PromiseInterface
{
$this->cleanupExecuted[$package->getName()] = true;
return parent::cleanup($type, $package, $path, $prevPackage);
}
/**
* @inheritDoc
*
* @throws \RuntimeException
* @throws \UnexpectedValueException
*/
public function install(PackageInterface $package, string $path, bool $output = true): PromiseInterface
{
if ($output) {
$this->io->writeError(" - " . InstallOperation::format($package) . $this->getInstallOperationAppendix($package, $path));
}
$vendorDir = $this->config->get('vendor-dir');
// clean up the target directory, unless it contains the vendor dir, as the vendor dir contains
// the archive to be extracted. This is the case when installing with create-project in the current directory
// but in that case we ensure the directory is empty already in ProjectInstaller so no need to empty it here.
if (false === strpos($this->filesystem->normalizePath($vendorDir), $this->filesystem->normalizePath($path.DIRECTORY_SEPARATOR))) {
$this->filesystem->emptyDirectory($path);
}
do {
$temporaryDir = $vendorDir.'/composer/'.substr(md5(uniqid('', true)), 0, 8);
} while (is_dir($temporaryDir));
$this->addCleanupPath($package, $temporaryDir);
// avoid cleaning up $path if installing in "." for eg create-project as we can not
// delete the directory we are currently in on windows
if (!is_dir($path) || realpath($path) !== Platform::getCwd()) {
$this->addCleanupPath($package, $path);
}
$this->filesystem->ensureDirectoryExists($temporaryDir);
$fileName = $this->getFileName($package, $path);
$filesystem = $this->filesystem;
$cleanup = function () use ($path, $filesystem, $temporaryDir, $package) {
// remove cache if the file was corrupted
$this->clearLastCacheWrite($package);
// clean up
$filesystem->removeDirectory($temporaryDir);
if (is_dir($path) && realpath($path) !== Platform::getCwd()) {
$filesystem->removeDirectory($path);
}
$this->removeCleanupPath($package, $temporaryDir);
$realpath = realpath($path);
if ($realpath !== false) {
$this->removeCleanupPath($package, $realpath);
}
};
try {
$promise = $this->extract($package, $fileName, $temporaryDir);
} catch (\Exception $e) {
$cleanup();
throw $e;
}
return $promise->then(function () use ($package, $filesystem, $fileName, $temporaryDir, $path): \React\Promise\PromiseInterface {
if (file_exists($fileName)) {
$filesystem->unlink($fileName);
}
/**
* Returns the folder content, excluding .DS_Store
*
* @param string $dir Directory
* @return \SplFileInfo[]
*/
$getFolderContent = static function ($dir): array {
$finder = Finder::create()
->ignoreVCS(false)
->ignoreDotFiles(false)
->notName('.DS_Store')
->depth(0)
->in($dir);
return iterator_to_array($finder);
};
$renameRecursively = null;
/**
* Renames (and recursively merges if needed) a folder into another one
*
* For custom installers, where packages may share paths, and given Composer 2's parallelism, we need to make sure
* that the source directory gets merged into the target one if the target exists. Otherwise rename() by default would
* put the source into the target e.g. src/ => target/src/ (assuming target exists) instead of src/ => target/
*
* @param string $from Directory
* @param string $to Directory
* @return void
*/
$renameRecursively = static function ($from, $to) use ($filesystem, $getFolderContent, $package, &$renameRecursively) {
$contentDir = $getFolderContent($from);
// move files back out of the temp dir
foreach ($contentDir as $file) {
$file = (string) $file;
if (is_dir($to . '/' . basename($file))) {
if (!is_dir($file)) {
throw new \RuntimeException('Installing '.$package.' would lead to overwriting the '.$to.'/'.basename($file).' directory with a file from the package, invalid operation.');
}
$renameRecursively($file, $to . '/' . basename($file));
} else {
$filesystem->rename($file, $to . '/' . basename($file));
}
}
};
$renameAsOne = false;
if (!file_exists($path)) {
$renameAsOne = true;
} elseif ($filesystem->isDirEmpty($path)) {
try {
if ($filesystem->removeDirectoryPhp($path)) {
$renameAsOne = true;
}
} catch (\RuntimeException $e) {
// ignore error, and simply do not renameAsOne
}
}
$contentDir = $getFolderContent($temporaryDir);
$singleDirAtTopLevel = 1 === count($contentDir) && is_dir((string) reset($contentDir));
if ($renameAsOne) {
// if the target $path is clear, we can rename the whole package in one go instead of looping over the contents
if ($singleDirAtTopLevel) {
$extractedDir = (string) reset($contentDir);
} else {
$extractedDir = $temporaryDir;
}
$filesystem->rename($extractedDir, $path);
} else {
// only one dir in the archive, extract its contents out of it
$from = $temporaryDir;
if ($singleDirAtTopLevel) {
$from = (string) reset($contentDir);
}
$renameRecursively($from, $path);
}
$promise = $filesystem->removeDirectoryAsync($temporaryDir);
return $promise->then(function () use ($package, $path, $temporaryDir) {
$this->removeCleanupPath($package, $temporaryDir);
$this->removeCleanupPath($package, $path);
});
}, static function ($e) use ($cleanup) {
$cleanup();
throw $e;
});
}
/**
* @inheritDoc
*/
protected function getInstallOperationAppendix(PackageInterface $package, string $path): string
{
return ': Extracting archive';
}
/**
* Extract file to directory
*
* @param string $file Extracted file
* @param string $path Directory
* @phpstan-return PromiseInterface<void|null>
*
* @throws \UnexpectedValueException If can not extract downloaded file to path
*/
abstract protected function extract(PackageInterface $package, string $file, string $path): PromiseInterface;
}