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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\Pcre\Preg;
use Composer\Util\IniHelper;
use Composer\Util\Platform;
use Composer\Util\ProcessExecutor;
use Symfony\Component\Process\ExecutableFinder;
use Symfony\Component\Process\Process;
use React\Promise\PromiseInterface;
use ZipArchive;
/**
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
class ZipDownloader extends ArchiveDownloader
{
/** @var array<int, array{0: string, 1: string}> */
private static $unzipCommands;
/** @var bool */
private static $hasZipArchive;
/** @var bool */
private static $isWindows;
/** @var ZipArchive|null */
private $zipArchiveObject; // @phpstan-ignore-line helper property that is set via reflection for testing purposes
/**
* @inheritDoc
*/
public function download(PackageInterface $package, string $path, ?PackageInterface $prevPackage = null, bool $output = true): PromiseInterface
{
if (null === self::$unzipCommands) {
self::$unzipCommands = [];
$finder = new ExecutableFinder;
if (Platform::isWindows() && ($cmd = $finder->find('7z', null, ['C:\Program Files\7-Zip']))) {
self::$unzipCommands[] = ['7z', ProcessExecutor::escape($cmd).' x -bb0 -y %s -o%s'];
}
if ($cmd = $finder->find('unzip')) {
self::$unzipCommands[] = ['unzip', ProcessExecutor::escape($cmd).' -qq %s -d %s'];
}
if (!Platform::isWindows() && ($cmd = $finder->find('7z'))) { // 7z linux/macOS support is only used if unzip is not present
self::$unzipCommands[] = ['7z', ProcessExecutor::escape($cmd).' x -bb0 -y %s -o%s'];
}
if (!Platform::isWindows() && ($cmd = $finder->find('7zz'))) { // 7zz linux/macOS support is only used if unzip is not present
self::$unzipCommands[] = ['7zz', ProcessExecutor::escape($cmd).' x -bb0 -y %s -o%s'];
}
}
$procOpenMissing = false;
if (!function_exists('proc_open')) {
self::$unzipCommands = [];
$procOpenMissing = true;
}
if (null === self::$hasZipArchive) {
self::$hasZipArchive = class_exists('ZipArchive');
}
if (!self::$hasZipArchive && !self::$unzipCommands) {
// php.ini path is added to the error message to help users find the correct file
$iniMessage = IniHelper::getMessage();
if ($procOpenMissing) {
$error = "The zip extension is missing and unzip/7z commands cannot be called as proc_open is disabled, skipping.\n" . $iniMessage;
} else {
$error = "The zip extension and unzip/7z commands are both missing, skipping.\n" . $iniMessage;
}
throw new \RuntimeException($error);
}
if (null === self::$isWindows) {
self::$isWindows = Platform::isWindows();
if (!self::$isWindows && !self::$unzipCommands) {
if ($procOpenMissing) {
$this->io->writeError("<warning>proc_open is disabled so 'unzip' and '7z' commands cannot be used, zip files are being unpacked using the PHP zip extension.</warning>");
$this->io->writeError("<warning>This may cause invalid reports of corrupted archives. Besides, any UNIX permissions (e.g. executable) defined in the archives will be lost.</warning>");
$this->io->writeError("<warning>Enabling proc_open and installing 'unzip' or '7z' (21.01+) may remediate them.</warning>");
} else {
$this->io->writeError("<warning>As there is no 'unzip' nor '7z' command installed zip files are being unpacked using the PHP zip extension.</warning>");
$this->io->writeError("<warning>This may cause invalid reports of corrupted archives. Besides, any UNIX permissions (e.g. executable) defined in the archives will be lost.</warning>");
$this->io->writeError("<warning>Installing 'unzip' or '7z' (21.01+) may remediate them.</warning>");
}
}
}
return parent::download($package, $path, $prevPackage, $output);
}
/**
* extract $file to $path with "unzip" command
*
* @param string $file File to extract
* @param string $path Path where to extract file
* @phpstan-return PromiseInterface<void|null>
*/
private function extractWithSystemUnzip(PackageInterface $package, string $file, string $path): PromiseInterface
{
static $warned7ZipLinux = false;
// Force Exception throwing if the other alternative extraction method is not available
$isLastChance = !self::$hasZipArchive;
if (!self::$unzipCommands) {
// This was call as the favorite extract way, but is not available
// We switch to the alternative
return $this->extractWithZipArchive($package, $file, $path);
}
$commandSpec = reset(self::$unzipCommands);
$command = sprintf($commandSpec[1], ProcessExecutor::escape($file), ProcessExecutor::escape($path));
// normalize separators to backslashes to avoid problems with 7-zip on windows
// see https://github.com/composer/composer/issues/10058
if (Platform::isWindows()) {
$command = sprintf($commandSpec[1], ProcessExecutor::escape(strtr($file, '/', '\\')), ProcessExecutor::escape(strtr($path, '/', '\\')));
}
$executable = $commandSpec[0];
if (!$warned7ZipLinux && !Platform::isWindows() && in_array($executable, ['7z', '7zz'], true)) {
$warned7ZipLinux = true;
if (0 === $this->process->execute($executable, $output)) {
if (Preg::isMatchStrictGroups('{^\s*7-Zip(?: \[64\])? ([0-9.]+)}', $output, $match) && version_compare($match[1], '21.01', '<')) {
$this->io->writeError(' <warning>Unzipping using '.$executable.' '.$match[1].' may result in incorrect file permissions. Install '.$executable.' 21.01+ or unzip to ensure you get correct permissions.</warning>');
}
}
}
$io = $this->io;
$tryFallback = function (\Throwable $processError) use ($isLastChance, $io, $file, $path, $package, $executable): \React\Promise\PromiseInterface {
if ($isLastChance) {
throw $processError;
}
if (!is_file($file)) {
$io->writeError(' <warning>'.$processError->getMessage().'</warning>');
$io->writeError(' <warning>This most likely is due to a custom installer plugin not handling the returned Promise from the downloader</warning>');
$io->writeError(' <warning>See https://github.com/composer/installers/commit/5006d0c28730ade233a8f42ec31ac68fb1c5c9bb for an example fix</warning>');
} else {
$io->writeError(' <warning>'.$processError->getMessage().'</warning>');
$io->writeError(' The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems)');
$io->writeError(' Unzip with '.$executable.' command failed, falling back to ZipArchive class');
// additional debug data to try to figure out GH actions issues https://github.com/composer/composer/issues/11148
if (Platform::getEnv('GITHUB_ACTIONS') !== false && Platform::getEnv('COMPOSER_TESTS_ARE_RUNNING') === false) {
$io->writeError(' <warning>Additional debug info, please report to https://github.com/composer/composer/issues/11148 if you see this:</warning>');
$io->writeError('File size: '.@filesize($file));
$io->writeError('File SHA1: '.hash_file('sha1', $file));
$io->writeError('First 100 bytes (hex): '.bin2hex(substr((string) file_get_contents($file), 0, 100)));
$io->writeError('Last 100 bytes (hex): '.bin2hex(substr((string) file_get_contents($file), -100)));
if (strlen((string) $package->getDistUrl()) > 0) {
$io->writeError('Origin URL: '.$this->processUrl($package, (string) $package->getDistUrl()));
$io->writeError('Response Headers: '.json_encode(FileDownloader::$responseHeaders[$package->getName()] ?? []));
}
}
}
return $this->extractWithZipArchive($package, $file, $path);
};
try {
$promise = $this->process->executeAsync($command);
return $promise->then(function (Process $process) use ($tryFallback, $command, $package, $file) {
if (!$process->isSuccessful()) {
if (isset($this->cleanupExecuted[$package->getName()])) {
throw new \RuntimeException('Failed to extract '.$package->getName().' as the installation was aborted by another package operation.');
}
$output = $process->getErrorOutput();
$output = str_replace(', '.$file.'.zip or '.$file.'.ZIP', '', $output);
return $tryFallback(new \RuntimeException('Failed to extract '.$package->getName().': ('.$process->getExitCode().') '.$command."\n\n".$output));
}
});
} catch (\Throwable $e) {
return $tryFallback($e);
}
}
/**
* extract $file to $path with ZipArchive
*
* @param string $file File to extract
* @param string $path Path where to extract file
* @phpstan-return PromiseInterface<void|null>
*/
private function extractWithZipArchive(PackageInterface $package, string $file, string $path): PromiseInterface
{
$processError = null;
$zipArchive = $this->zipArchiveObject ?: new ZipArchive();
try {
if (!file_exists($file) || ($filesize = filesize($file)) === false || $filesize === 0) {
$retval = -1;
} else {
$retval = $zipArchive->open($file);
}
if (true === $retval) {
$extractResult = $zipArchive->extractTo($path);
if (true === $extractResult) {
$zipArchive->close();
return \React\Promise\resolve(null);
}
$processError = new \RuntimeException(rtrim("There was an error extracting the ZIP file, it is either corrupted or using an invalid format.\n"));
} else {
$processError = new \UnexpectedValueException(rtrim($this->getErrorMessage($retval, $file)."\n"), $retval);
}
} catch (\ErrorException $e) {
$processError = new \RuntimeException('The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems): '.$e->getMessage(), 0, $e);
} catch (\Throwable $e) {
$processError = $e;
}
throw $processError;
}
/**
* extract $file to $path
*
* @param string $file File to extract
* @param string $path Path where to extract file
*/
protected function extract(PackageInterface $package, string $file, string $path): PromiseInterface
{
return $this->extractWithSystemUnzip($package, $file, $path);
}
/**
* Give a meaningful error message to the user.
*/
protected function getErrorMessage(int $retval, string $file): string
{
switch ($retval) {
case ZipArchive::ER_EXISTS:
return sprintf("File '%s' already exists.", $file);
case ZipArchive::ER_INCONS:
return sprintf("Zip archive '%s' is inconsistent.", $file);
case ZipArchive::ER_INVAL:
return sprintf("Invalid argument (%s)", $file);
case ZipArchive::ER_MEMORY:
return sprintf("Malloc failure (%s)", $file);
case ZipArchive::ER_NOENT:
return sprintf("No such zip file: '%s'", $file);
case ZipArchive::ER_NOZIP:
return sprintf("'%s' is not a zip archive.", $file);
case ZipArchive::ER_OPEN:
return sprintf("Can't open zip file: %s", $file);
case ZipArchive::ER_READ:
return sprintf("Zip read error (%s)", $file);
case ZipArchive::ER_SEEK:
return sprintf("Zip seek error (%s)", $file);
case -1:
return sprintf("'%s' is a corrupted zip archive (0 bytes), try again.", $file);
default:
return sprintf("'%s' is not a valid zip archive, got error code: %s", $file, $retval);
}
}
}