Na}{

File Content: `SelfUpdateCommand.php`

<?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\Command;

use Composer\Composer;
use Composer\Factory;
use Composer\Config;
use Composer\Pcre\Preg;
use Composer\Util\Filesystem;
use Composer\Util\Platform;
use Composer\SelfUpdate\Keys;
use Composer\SelfUpdate\Versions;
use Composer\IO\IOInterface;
use Composer\Downloader\FilesystemException;
use Composer\Downloader\TransportException;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Finder\Finder;

/**
 * @author Igor Wiedler <igor@wiedler.ch>
 * @author Kevin Ran <kran@adobe.com>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class SelfUpdateCommand extends BaseCommand
{
    const HOMEPAGE = 'getcomposer.org';
    const OLD_INSTALL_EXT = '-old.phar';

    /**
     * @return void
     */
    protected function configure()
    {
        $this
            ->setName('self-update')
            ->setAliases(array('selfupdate'))
            ->setDescription('Updates composer.phar to the latest version.')
            ->setDefinition(array(
                new InputOption('rollback', 'r', InputOption::VALUE_NONE, 'Revert to an older installation of composer'),
                new InputOption('clean-backups', null, InputOption::VALUE_NONE, 'Delete old backups during an update. This makes the current version of composer the only backup available after the update'),
                new InputArgument('version', InputArgument::OPTIONAL, 'The version to update to'),
                new InputOption('no-progress', null, InputOption::VALUE_NONE, 'Do not output download progress.'),
                new InputOption('update-keys', null, InputOption::VALUE_NONE, 'Prompt user for a key update'),
                new InputOption('stable', null, InputOption::VALUE_NONE, 'Force an update to the stable channel'),
                new InputOption('preview', null, InputOption::VALUE_NONE, 'Force an update to the preview channel'),
                new InputOption('snapshot', null, InputOption::VALUE_NONE, 'Force an update to the snapshot channel'),
                new InputOption('1', null, InputOption::VALUE_NONE, 'Force an update to the stable channel, but only use 1.x versions'),
                new InputOption('2', null, InputOption::VALUE_NONE, 'Force an update to the stable channel, but only use 2.x versions'),
                new InputOption('2.2', null, InputOption::VALUE_NONE, 'Force an update to the stable channel, but only use 2.2.x LTS versions'),
                new InputOption('set-channel-only', null, InputOption::VALUE_NONE, 'Only store the channel as the default one and then exit'),
            ))
            ->setHelp(
                <<<EOT
The <info>self-update</info> command checks getcomposer.org for newer
versions of composer and if found, installs the latest.

<info>php composer.phar self-update</info>

Read more at https://getcomposer.org/doc/03-cli.md#self-update-selfupdate-
EOT
            )
        ;
    }

    /**
     * @return int
     * @throws FilesystemException
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        // trigger autoloading of a few classes which may be needed when verifying/swapping the phar file
        // to ensure we do not try to load them from the new phar, see https://github.com/composer/composer/issues/10252
        class_exists('Composer\Util\Platform');
        class_exists('Composer\Downloader\FilesystemException');

        $config = Factory::createConfig();

        if ($config->get('disable-tls') === true) {
            $baseUrl = 'http://' . self::HOMEPAGE;
        } else {
            $baseUrl = 'https://' . self::HOMEPAGE;
        }

        $io = $this->getIO();
        $httpDownloader = Factory::createHttpDownloader($io, $config);

        $versionsUtil = new Versions($config, $httpDownloader);

        // switch channel if requested
        $requestedChannel = null;
        foreach (Versions::$channels as $channel) {
            if ($input->getOption($channel)) {
                $requestedChannel = $channel;
                $versionsUtil->setChannel($channel, $io);
                break;
            }
        }

        if ($input->getOption('set-channel-only')) {
            return 0;
        }

        $cacheDir = $config->get('cache-dir');
        $rollbackDir = $config->get('data-dir');
        $home = $config->get('home');
        $localFilename = realpath($_SERVER['argv'][0]) ?: $_SERVER['argv'][0];

        if ($input->getOption('update-keys')) {
            $this->fetchKeys($io, $config);

            return 0;
        }

        // ensure composer.phar location is accessible
        if (!file_exists($localFilename)) {
            throw new FilesystemException('Composer update failed: the "'.$localFilename.'" is not accessible');
        }

        // check if current dir is writable and if not try the cache dir from settings
        $tmpDir = is_writable(dirname($localFilename)) ? dirname($localFilename) : $cacheDir;

        // check for permissions in local filesystem before start connection process
        if (!is_writable($tmpDir)) {
            throw new FilesystemException('Composer update failed: the "'.$tmpDir.'" directory used to download the temp file could not be written');
        }

        // check if composer is running as the same user that owns the directory root, only if POSIX is defined and callable
        if (function_exists('posix_getpwuid') && function_exists('posix_geteuid')) {
            $composeUser = posix_getpwuid(posix_geteuid());
            $homeOwner = posix_getpwuid(fileowner($home));
            if (isset($composeUser['name'], $homeOwner['name']) && $composeUser['name'] !== $homeOwner['name']) {
                $io->writeError('<warning>You are running Composer as "'.$composeUser['name'].'", while "'.$home.'" is owned by "'.$homeOwner['name'].'"</warning>');
            }
        }

        if ($input->getOption('rollback')) {
            return $this->rollback($output, $rollbackDir, $localFilename);
        }

        $latest = $versionsUtil->getLatest();
        $latestStable = $versionsUtil->getLatest('stable');
        try {
            $latestPreview = $versionsUtil->getLatest('preview');
        } catch (\UnexpectedValueException $e) {
            $latestPreview = $latestStable;
        }
        $latestVersion = $latest['version'];
        $updateVersion = $input->getArgument('version') ?: $latestVersion;
        $currentMajorVersion = Preg::replace('{^(\d+).*}', '$1', Composer::getVersion());
        $updateMajorVersion = Preg::replace('{^(\d+).*}', '$1', $updateVersion);
        $previewMajorVersion = Preg::replace('{^(\d+).*}', '$1', $latestPreview['version']);

        if ($versionsUtil->getChannel() === 'stable' && !$input->getArgument('version')) {
            // if requesting stable channel and no specific version, avoid automatically upgrading to the next major
            // simply output a warning that the next major stable is available and let users upgrade to it manually
            if ($currentMajorVersion < $updateMajorVersion) {
                $skippedVersion = $updateVersion;

                $versionsUtil->setChannel($currentMajorVersion);

                $latest = $versionsUtil->getLatest();
                $latestStable = $versionsUtil->getLatest('stable');
                $latestVersion = $latest['version'];
                $updateVersion = $latestVersion;

                $io->writeError('<warning>A new stable major version of Composer is available ('.$skippedVersion.'), run "composer self-update --'.$updateMajorVersion.'" to update to it. See also https://getcomposer.org/'.$updateMajorVersion.'</warning>');
            } elseif ($currentMajorVersion < $previewMajorVersion) {
                // promote next major version if available in preview
                $io->writeError('<warning>A preview release of the next major version of Composer is available ('.$latestPreview['version'].'), run "composer self-update --preview" to give it a try. See also https://github.com/composer/composer/releases for changelogs.</warning>');
            }
        }

        $effectiveChannel = $requestedChannel === null ? $versionsUtil->getChannel() : $requestedChannel;
        if (is_numeric($effectiveChannel) && strpos($latestStable['version'], $effectiveChannel) !== 0) {
            $io->writeError('<warning>Warning: You forced the install of '.$latestVersion.' via --'.$effectiveChannel.', but '.$latestStable['version'].' is the latest stable version. Updating to it via composer self-update --stable is recommended.</warning>');
        }
        if (isset($latest['eol'])) {
            $io->writeError('<warning>Warning: Version '.$latestVersion.' is EOL / End of Life. '.$latestStable['version'].' is the latest stable version. Updating to it via composer self-update --stable is recommended.</warning>');
        }

        if (Preg::isMatch('{^[0-9a-f]{40}$}', $updateVersion) && $updateVersion !== $latestVersion) {
            $io->writeError('<error>You can not update to a specific SHA-1 as those phars are not available for download</error>');

            return 1;
        }

        $channelString = $versionsUtil->getChannel();
        if (is_numeric($channelString)) {
            $channelString .= '.x';
        }

        if (Composer::VERSION === $updateVersion) {
            $io->writeError(
                sprintf(
                    '<info>You are already using the latest available Composer version %s (%s channel).</info>',
                    $updateVersion,
                    $channelString
                )
            );

            // remove all backups except for the most recent, if any
            if ($input->getOption('clean-backups')) {
                $this->cleanBackups($rollbackDir, $this->getLastBackupVersion($rollbackDir));
            }

            return 0;
        }

        $tempFilename = $tmpDir . '/' . basename($localFilename, '.phar').'-temp'.rand(0, 10000000).'.phar';
        $backupFile = sprintf(
            '%s/%s-%s%s',
            $rollbackDir,
            strtr(Composer::RELEASE_DATE, ' :', '_-'),
            Preg::replace('{^([0-9a-f]{7})[0-9a-f]{33}$}', '$1', Composer::VERSION),
            self::OLD_INSTALL_EXT
        );

        $updatingToTag = !Preg::isMatch('{^[0-9a-f]{40}$}', $updateVersion);

        $io->write(sprintf("Upgrading to version <info>%s</info> (%s channel).", $updateVersion, $channelString));
        $remoteFilename = $baseUrl . ($updatingToTag ? "/download/{$updateVersion}/composer.phar" : '/composer.phar');
        try {
            $signature = $httpDownloader->get($remoteFilename.'.sig')->getBody();
        } catch (TransportException $e) {
            if ($e->getStatusCode() === 404) {
                throw new \InvalidArgumentException('Version "'.$updateVersion.'" could not be found.', 0, $e);
            }
            throw $e;
        }
        $io->writeError('   ', false);
        $httpDownloader->copy($remoteFilename, $tempFilename);
        $io->writeError('');

        if (!file_exists($tempFilename) || !$signature) {
            $io->writeError('<error>The download of the new composer version failed for an unexpected reason</error>');

            return 1;
        }

        // verify phar signature
        if (!extension_loaded('openssl') && $config->get('disable-tls')) {
            $io->writeError('<warning>Skipping phar signature verification as you have disabled OpenSSL via config.disable-tls</warning>');
        } else {
            if (!extension_loaded('openssl')) {
                throw new \RuntimeException('The openssl extension is required for phar signatures to be verified but it is not available. '
                . 'If you can not enable the openssl extension, you can disable this error, at your own risk, by setting the \'disable-tls\' option to true.');
            }

            $sigFile = 'file://'.$home.'/' . ($updatingToTag ? 'keys.tags.pub' : 'keys.dev.pub');
            if (!file_exists($sigFile)) {
                file_put_contents(
                    $home.'/keys.dev.pub',
                    <<<DEVPUBKEY
-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----
DEVPUBKEY
                );

                file_put_contents(
                    $home.'/keys.tags.pub',
                    <<<TAGSPUBKEY
-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----
TAGSPUBKEY
                );
            }

            $pubkeyid = openssl_pkey_get_public($sigFile);
            $algo = defined('OPENSSL_ALGO_SHA384') ? OPENSSL_ALGO_SHA384 : 'SHA384';
            if (!in_array('sha384', array_map('strtolower', openssl_get_md_methods()))) {
                throw new \RuntimeException('SHA384 is not supported by your openssl extension, could not verify the phar file integrity');
            }
            $signature = json_decode($signature, true);
            $signature = base64_decode($signature['sha384']);
            $verified = 1 === openssl_verify(file_get_contents($tempFilename), $signature, $pubkeyid, $algo);

            // PHP 8 automatically frees the key instance and deprecates the function
            if (PHP_VERSION_ID < 80000) {
                openssl_free_key($pubkeyid);
            }

            if (!$verified) {
                throw new \RuntimeException('The phar signature did not match the file you downloaded, this means your public keys are outdated or that the phar file is corrupt/has been modified');
            }
        }

        // remove saved installations of composer
        if ($input->getOption('clean-backups')) {
            $this->cleanBackups($rollbackDir);
        }

        if (!$this->setLocalPhar($localFilename, $tempFilename, $backupFile)) {
            @unlink($tempFilename);

            return 1;
        }

        if (file_exists($backupFile)) {
            $io->writeError(sprintf(
                'Use <info>composer self-update --rollback</info> to return to version <comment>%s</comment>',
                Composer::VERSION
            ));
        } else {
            $io->writeError('<warning>A backup of the current version could not be written to '.$backupFile.', no rollback possible</warning>');
        }

        return 0;
    }

    /**
     * @return void
     * @throws \Exception
     */
    protected function fetchKeys(IOInterface $io, Config $config)
    {
        if (!$io->isInteractive()) {
            throw new \RuntimeException('Public keys can not be fetched in non-interactive mode, please run Composer interactively');
        }

        $io->write('Open <info>https://composer.github.io/pubkeys.html</info> to find the latest keys');

        $validator = function ($value) {
            if (!Preg::isMatch('{^-----BEGIN PUBLIC KEY-----$}', trim($value))) {
                throw new \UnexpectedValueException('Invalid input');
            }

            return trim($value)."\n";
        };

        $devKey = '';
        while (!Preg::isMatch('{(-----BEGIN PUBLIC KEY-----.+?-----END PUBLIC KEY-----)}s', $devKey, $match)) {
            $devKey = $io->askAndValidate('Enter Dev / Snapshot Public Key (including lines with -----): ', $validator);
            while ($line = $io->ask('')) {
                $devKey .= trim($line)."\n";
                if (trim($line) === '-----END PUBLIC KEY-----') {
                    break;
                }
            }
        }
        file_put_contents($keyPath = $config->get('home').'/keys.dev.pub', $match[0]);
        $io->write('Stored key with fingerprint: ' . Keys::fingerprint($keyPath));

        $tagsKey = '';
        while (!Preg::isMatch('{(-----BEGIN PUBLIC KEY-----.+?-----END PUBLIC KEY-----)}s', $tagsKey, $match)) {
            $tagsKey = $io->askAndValidate('Enter Tags Public Key (including lines with -----): ', $validator);
            while ($line = $io->ask('')) {
                $tagsKey .= trim($line)."\n";
                if (trim($line) === '-----END PUBLIC KEY-----') {
                    break;
                }
            }
        }
        file_put_contents($keyPath = $config->get('home').'/keys.tags.pub', $match[0]);
        $io->write('Stored key with fingerprint: ' . Keys::fingerprint($keyPath));

        $io->write('Public keys stored in '.$config->get('home'));
    }

    /**
     * @param string $rollbackDir
     * @param string $localFilename
     * @return int
     * @throws FilesystemException
     */
    protected function rollback(OutputInterface $output, $rollbackDir, $localFilename)
    {
        $rollbackVersion = $this->getLastBackupVersion($rollbackDir);
        if (!$rollbackVersion) {
            throw new \UnexpectedValueException('Composer rollback failed: no installation to roll back to in "'.$rollbackDir.'"');
        }

        $oldFile = $rollbackDir . '/' . $rollbackVersion . self::OLD_INSTALL_EXT;

        if (!is_file($oldFile)) {
            throw new FilesystemException('Composer rollback failed: "'.$oldFile.'" could not be found');
        }
        if (!Filesystem::isReadable($oldFile)) {
            throw new FilesystemException('Composer rollback failed: "'.$oldFile.'" could not be read');
        }

        $io = $this->getIO();
        $io->writeError(sprintf("Rolling back to version <info>%s</info>.", $rollbackVersion));
        if (!$this->setLocalPhar($localFilename, $oldFile)) {
            return 1;
        }

        return 0;
    }

    /**
     * Checks if the downloaded/rollback phar is valid then moves it
     *
     * @param  string              $localFilename The composer.phar location
     * @param  string              $newFilename   The downloaded or backup phar
     * @param  string              $backupTarget  The filename to use for the backup
     * @throws FilesystemException If the file cannot be moved
     * @return bool                Whether the phar is valid and has been moved
     */
    protected function setLocalPhar($localFilename, $newFilename, $backupTarget = null)
    {
        $io = $this->getIO();
        @chmod($newFilename, fileperms($localFilename));

        // check phar validity
        if (!$this->validatePhar($newFilename, $error)) {
            $io->writeError('<error>The '.($backupTarget ? 'update' : 'backup').' file is corrupted ('.$error.')</error>');

            if ($backupTarget) {
                $io->writeError('<error>Please re-run the self-update command to try again.</error>');
            }

            return false;
        }

        // copy current file into backups dir
        if ($backupTarget) {
            @copy($localFilename, $backupTarget);
        }

        try {
            if (Platform::isWindows()) {
                // use copy to apply permissions from the destination directory
                // as rename uses source permissions and may block other users
                copy($newFilename, $localFilename);
                @unlink($newFilename);
            } else {
                rename($newFilename, $localFilename);
            }

            return true;
        } catch (\Exception $e) {
            // see if we can run this operation as an Admin on Windows
            if (!is_writable(dirname($localFilename))
                && $io->isInteractive()
                && $this->isWindowsNonAdminUser()) {
                return $this->tryAsWindowsAdmin($localFilename, $newFilename);
            }

            @unlink($newFilename);
            $action = 'Composer '.($backupTarget ? 'update' : 'rollback');
            throw new FilesystemException($action.' failed: "'.$localFilename.'" could not be written.'.PHP_EOL.$e->getMessage());
        }
    }

    /**
     * @param string $rollbackDir
     * @param string|null $except
     *
     * @return void
     */
    protected function cleanBackups($rollbackDir, $except = null)
    {
        $finder = $this->getOldInstallationFinder($rollbackDir);
        $io = $this->getIO();
        $fs = new Filesystem;

        foreach ($finder as $file) {
            if ($except && $file->getBasename(self::OLD_INSTALL_EXT) === $except) {
                continue;
            }
            $file = (string) $file;
            $io->writeError('<info>Removing: '.$file.'</info>');
            $fs->remove($file);
        }
    }

    /**
     * @param string $rollbackDir
     * @return string|false
     */
    protected function getLastBackupVersion($rollbackDir)
    {
        $finder = $this->getOldInstallationFinder($rollbackDir);
        $finder->sortByName();
        $files = iterator_to_array($finder);

        if (count($files)) {
            return basename(end($files), self::OLD_INSTALL_EXT);
        }

        return false;
    }

    /**
     * @param string $rollbackDir
     * @return Finder
     */
    protected function getOldInstallationFinder($rollbackDir)
    {
        return Finder::create()
            ->depth(0)
            ->files()
            ->name('*' . self::OLD_INSTALL_EXT)
            ->in($rollbackDir);
    }

    /**
     * Validates the downloaded/backup phar file
     *
     * @param string      $pharFile The downloaded or backup phar
     * @param null|string $error    Set by method on failure
     *
     * Code taken from getcomposer.org/installer. Any changes should be made
     * there and replicated here
     *
     * @throws \Exception
     * @return bool       If the operation succeeded
     */
    protected function validatePhar($pharFile, &$error)
    {
        if (ini_get('phar.readonly')) {
            return true;
        }

        try {
            // Test the phar validity
            $phar = new \Phar($pharFile);
            // Free the variable to unlock the file
            unset($phar);
            $result = true;
        } catch (\Exception $e) {
            if (!$e instanceof \UnexpectedValueException && !$e instanceof \PharException) {
                throw $e;
            }
            $error = $e->getMessage();
            $result = false;
        }

        return $result;
    }

    /**
     * Returns true if this is a non-admin Windows user account
     *
     * @return bool
     */
    protected function isWindowsNonAdminUser()
    {
        if (!Platform::isWindows()) {
            return false;
        }

        // fltmc.exe manages filter drivers and errors without admin privileges
        exec('fltmc.exe filters', $output, $exitCode);

        return $exitCode !== 0;
    }

    /**
     * Invokes a UAC prompt to update composer.phar as an admin
     *
     * Uses a .vbs script to elevate and run the cmd.exe copy command.
     *
     * @param  string $localFilename The composer.phar location
     * @param  string $newFilename   The downloaded or backup phar
     * @return bool   Whether composer.phar has been updated
     */
    protected function tryAsWindowsAdmin($localFilename, $newFilename)
    {
        $io = $this->getIO();

        $io->writeError('<error>Unable to write "'.$localFilename.'". Access is denied.</error>');
        $helpMessage = 'Please run the self-update command as an Administrator.';
        $question = 'Complete this operation with Administrator privileges [<comment>Y,n</comment>]? ';

        if (!$io->askConfirmation($question, true)) {
            $io->writeError('<warning>Operation cancelled. '.$helpMessage.'</warning>');

            return false;
        }

        $tmpFile = tempnam(sys_get_temp_dir(), '');
        $script = $tmpFile.'.vbs';
        rename($tmpFile, $script);

        $checksum = hash_file('sha256', $newFilename);

        // cmd's internal copy is fussy about backslashes
        $source = str_replace('/', '\\', $newFilename);
        $destination = str_replace('/', '\\', $localFilename);

        $vbs = <<<EOT
Set UAC = CreateObject("Shell.Application")
UAC.ShellExecute "cmd.exe", "/c copy /b /y ""$source"" ""$destination""", "", "runas", 0
Wscript.Sleep(300)
EOT;

        file_put_contents($script, $vbs);
        exec('"'.$script.'"');
        @unlink($script);

        // see if the file was copied and is still accessible
        if ($result = Filesystem::isReadable($localFilename) && (hash_file('sha256', $localFilename) === $checksum)) {
            $io->writeError('<info>Operation succeeded.</info>');
            @unlink($newFilename);
        } else {
            $io->writeError('<error>Operation failed.'.$helpMessage.'</error>');
        }

        return $result;
    }
}
Name	Size	Permission
AboutCommand.php	1308 bytes	0644
ArchiveCommand.php	7815 bytes	0644
BaseCommand.php	10355 bytes	0644
BaseDependencyCommand.php	9100 bytes	0644
CheckPlatformReqsCommand.php	8009 bytes	0644
ClearCacheCommand.php	2296 bytes	0644
ConfigCommand.php	35185 bytes	0644
CreateProjectCommand.php	24747 bytes	0644
DependsCommand.php	1820 bytes	0644
DiagnoseCommand.php	28887 bytes	0644
DumpAutoloadCommand.php	5285 bytes	0644
ExecCommand.php	3539 bytes	0644
FundCommand.php	5412 bytes	0644
GlobalCommand.php	4007 bytes	0644
HomeCommand.php	5652 bytes	0644
InitCommand.php	45986 bytes	0644
InstallCommand.php	7733 bytes	0644
LicensesCommand.php	7415 bytes	0644
OutdatedCommand.php	5084 bytes	0644
ProhibitsCommand.php	2006 bytes	0644
ReinstallCommand.php	8552 bytes	0644
RemoveCommand.php	14381 bytes	0644
RequireCommand.php	22863 bytes	0644
RunScriptCommand.php	5223 bytes	0644
ScriptAliasCommand.php	2199 bytes	0644
SearchCommand.php	4799 bytes	0644
SelfUpdateCommand.php	26293 bytes	0644
ShowCommand.php	55499 bytes	0644
StatusCommand.php	8495 bytes	0644
SuggestsCommand.php	4081 bytes	0644
UpdateCommand.php	16773 bytes	0644
ValidateCommand.php	11564 bytes	0644
File Content: SelfUpdateCommand.php

File Content: `SelfUpdateCommand.php`
