protected function execute(InputInterface $input, OutputInterface $output)
{
$config = Factory::createConfig();
if ($config->get('disable-tls') === true) {
$baseUrl = 'http://' . self::HOMEPAGE;
} else {
$baseUrl = 'https://' . self::HOMEPAGE;
}
$io = $this->getIO();
$remoteFilesystem = Factory::createRemoteFilesystem($io, $config);
$versionsUtil = new Versions($config, $remoteFilesystem);
// switch channel if requested
foreach (array('stable', 'preview', 'snapshot') as $channel) {
if ($input->getOption($channel)) {
$versionsUtil->setChannel($channel);
}
}
$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')) {
return $this->fetchKeys($io, $config);
}
// 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 "' . $tmpDir . '" directory used to download the temp file could not be written');
}
if ($input->getOption('rollback')) {
return $this->rollback($output, $rollbackDir, $localFilename);
}
$latest = $versionsUtil->getLatest();
$latestVersion = $latest['version'];
$updateVersion = $input->getArgument('version') ?: $latestVersion;
if (preg_match('{^[0-9a-f]{40}$}', $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;
}
if (Composer::VERSION === $updateVersion) {
$io->writeError('<info>You are already using composer version ' . $updateVersion . '.</info>');
// remove all backups except for the most recent, if any
if ($input->getOption('clean-backups')) {
$this->cleanBackups($rollbackDir, $this->getLastBackupVersion($rollbackDir));
}
return 0;
}
$tempFilename = $tmpDir . '/' . basename($localFilename, '.phar') . '-temp.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);
$updatingToTag = !preg_match('{^[0-9a-f]{40}$}', $updateVersion);
$io->write(sprintf("Updating to version <info>%s</info>.", $updateVersion));
$remoteFilename = $baseUrl . ($updatingToTag ? "/download/{$updateVersion}/composer.phar" : '/composer.phar');
$signature = $remoteFilesystem->getContents(self::HOMEPAGE, $remoteFilename . '.sig', false);
$remoteFilesystem->copy(self::HOMEPAGE, $remoteFilename, $tempFilename, !$input->getOption('no-progress'));
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', 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, $algo);
openssl_free_key($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 ($err = $this->setLocalPhar($localFilename, $tempFilename, $backupFile)) {
@unlink($tempFilename);
$io->writeError('<error>The file is corrupted (' . $err->getMessage() . ').</error>');
$io->writeError('<error>Please re-run the self-update command to try again.</error>');
return 1;
}
if (file_exists($backupFile)) {
$io->writeError('Use <info>composer self-update --rollback</info> to return to version ' . Composer::VERSION);
} else {
$io->writeError('<warning>A backup of the current version could not be written to ' . $backupFile . ', no rollback possible</warning>');
}
}
private function checkVersion($config)
{
$versionsUtil = new Versions($config, $this->rfs);
$latest = $versionsUtil->getLatest();
if (Composer::VERSION !== $latest['version'] && Composer::VERSION !== '@package_version@') {
return '<comment>You are not running the latest ' . $versionsUtil->getChannel() . ' version, run `composer self-update` to update (' . Composer::VERSION . ' => ' . $latest['version'] . ')</comment>';
}
return true;
}
