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Merge remote-tracking branch 'chr0n1x/feature-selfupdate-rollback'

pull/2532/head
Jordi Boggiano 2013-12-26 17:55:29 +01:00
parent 040a9e3977 d26355ef65
commit 47a542ea89
1 changed files with 151 additions and 29 deletions
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166
src/Composer/Command/SelfUpdateCommand.php
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@ -14,9 +14,11 @@ namespace Composer\Command;
use Composer\Composer;
use Composer\Factory;
use Composer\Util\Filesystem;
use Composer\Util\RemoteFilesystem;
use Composer\Downloader\FilesystemException;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
/**
@ -24,12 +26,35 @@ use Symfony\Component\Console\Output\OutputInterface;
*/
class SelfUpdateCommand extends Command
{
const ROLLBACK = 'rollback';
const CLEAN_ROLLBACKS = 'clean-rollbacks';
const HOMEPAGE = 'getcomposer.org';
const OLD_INSTALL_EXT = '-old.phar';
protected $remoteFS;
protected $latestVersion;
protected $homepageURL;
protected $localFilename;
public function __construct($name = null)
{
parent::__construct($name);
$protocol = (extension_loaded('openssl') ? 'https' : 'http') . '://';
$this->homepageURL = $protocol . self::HOMEPAGE;
$this->remoteFS = new RemoteFilesystem($this->getIO());
$this->localFilename = realpath($_SERVER['argv'][0]) ?: $_SERVER['argv'][0];
}
protected function configure()
{
$this
->setName('self-update')
->setAliases(array('selfupdate'))
->setDescription('Updates composer.phar to the latest version.')
->setDefinition(array(
new InputOption(self::ROLLBACK, 'r', InputOption::VALUE_NONE, 'Revert to an older installation of composer'),
new InputOption(self::CLEAN_ROLLBACKS, null, InputOption::VALUE_NONE, 'Delete old snapshots during an update. This makes the current version of composer the only rollback snapshot after the update')
))
->setHelp(<<<EOT
The <info>self-update</info> command checks getcomposer.org for newer
versions of composer and if found, installs the latest.
@ -44,57 +69,154 @@ EOT
protected function execute(InputInterface $input, OutputInterface $output)
{
$config = Factory::createConfig();
$cacheDir = $config->get('cache-dir');
$localFilename = realpath($_SERVER['argv'][0]) ?: $_SERVER['argv'][0];
$cacheDir = rtrim($config->get('cache-dir'), '/');
// Check if current dir is writable and if not try the cache dir from settings
$tmpDir = is_writable(dirname($localFilename))? dirname($localFilename) : $cacheDir;
$tempFilename = $tmpDir . '/' . basename($localFilename, '.phar').'-temp.phar';
$tmpDir = is_writable(dirname($this->localFilename))? dirname($this->localFilename) : $cacheDir;
// check for permissions in local filesystem before start connection process
if (!is_writable($tmpDir)) {
throw new FilesystemException('Composer update failed: the "'.$tmpDir.'" directory used to download the temp file could not be written');
}
if (!is_writable($localFilename)) {
throw new FilesystemException('Composer update failed: the "'.$localFilename. '" file could not be written');
if (!is_writable($this->localFilename)) {
throw new FilesystemException('Composer update failed: the "'.$this->localFilename.'" file could not be written');
}
$protocol = extension_loaded('openssl') ? 'https' : 'http';
$rfs = new RemoteFilesystem($this->getIO());
$latest = trim($rfs->getContents('getcomposer.org', $protocol . '://getcomposer.org/version', false));
$rollbackVersion = false;
$rollbackDir = rtrim($config->get('home'), '/');
if (Composer::VERSION !== $latest) {
$output->writeln(sprintf("Updating to version <info>%s</info>.", $latest));
// rollback specified, get last phar
if ($input->getOption(self::ROLLBACK)) {
$rollbackVersion = $this->getLastVersion($rollbackDir);
if (!$rollbackVersion) {
throw new FilesystemException('Composer rollback failed: no installation to roll back to in "'.$rollbackDir.'"');
}
}
$remoteFilename = $protocol . '://getcomposer.org/composer.phar';
// if a rollback version is specified, check for permissions and rollback installation
if ($rollbackVersion) {
if (!is_writable($rollbackDir)) {
throw new FilesystemException('Composer rollback failed: the "'.$rollbackDir.'" dir could not be written to');
}
$rfs->copy('getcomposer.org', $remoteFilename, $tempFilename);
$old = $rollbackDir . '/' . $rollbackVersion . self::OLD_INSTALL_EXT;
if (!is_file($old)) {
throw new FilesystemException('Composer rollback failed: "'.$old.'" could not be found');
}
if (!is_readable($old)) {
throw new FilesystemException('Composer rollback failed: "'.$old.'" could not be read');
}
}
$updateVersion = ($rollbackVersion)? $rollbackVersion : $this->getLatestVersion();
if (Composer::VERSION === $updateVersion) {
$output->writeln('<info>You are already using composer version '.$updateVersion.'.</info>');
return 0;
}
$tempFilename = $tmpDir . '/' . basename($this->localFilename, '.phar').'-temp.phar';
$backupFile = ($rollbackVersion)? false : $rollbackDir . '/' . Composer::VERSION . self::OLD_INSTALL_EXT;
if ($rollbackVersion) {
rename($rollbackDir . "/{$rollbackVersion}" . self::OLD_INSTALL_EXT, $tempFilename);
$output->writeln(sprintf("Rolling back to cached version <info>%s</info>.", $rollbackVersion));
} else {
$endpoint = ($updateVersion === $this->getLatestVersion()) ? '/composer.phar' : "/download/{$updateVersion}/composer.phar";
$remoteFilename = $this->homepageURL . $endpoint;
$output->writeln(sprintf("Updating to version <info>%s</info>.", $updateVersion));
$this->remoteFS->copy(self::HOMEPAGE, $remoteFilename, $tempFilename);
// @todo: handle snapshot versions not being found!
if (!file_exists($tempFilename)) {
$output->writeln('<error>The download of the new composer version failed for an unexpected reason');
return 1;
}
// remove saved installations of composer
if ($input->getOption(self::CLEAN_ROLLBACKS)) {
$files = $this->getOldInstallationFiles($rollbackDir);
if (!empty($files)) {
$fs = new Filesystem;
foreach ($files as $file) {
$output->writeln('<info>Removing: '.$file);
$fs->remove($file);
}
}
}
}
if ($err = $this->setLocalPhar($tempFilename, $backupFile)) {
$output->writeln('<error>The file is corrupted ('.$err->getMessage().').</error>');
$output->writeln('<error>Please re-run the self-update command to try again.</error>');
return 1;
}
if ($backupFile) {
$output->writeln('<info>Saved rollback snapshot '.$backupFile);
}
}
protected function setLocalPhar($filename, $backupFile)
{
try {
@chmod($tempFilename, 0777 & ~umask());
@chmod($filename, 0777 & ~umask());
// test the phar validity
$phar = new \Phar($tempFilename);
$phar = new \Phar($filename);
// free the variable to unlock the file
unset($phar);
rename($tempFilename, $localFilename);
// copy current file into installations dir
if ($backupFile) {
copy($this->localFilename, $backupFile);
}
unset($phar);
rename($filename, $this->localFilename);
} catch (\Exception $e) {
@unlink($tempFilename);
@unlink($filename);
if (!$e instanceof \UnexpectedValueException && !$e instanceof \PharException) {
throw $e;
}
$output->writeln('<error>The download is corrupted ('.$e->getMessage().').</error>');
$output->writeln('<error>Please re-run the self-update command to try again.</error>');
return $e;
}
} else {
$output->writeln("<info>You are using the latest composer version.</info>");
}
protected function getLastVersion($rollbackDir)
{
$files = $this->getOldInstallationFiles($rollbackDir);
if (empty($files)) {
return false;
}
$fileTimes = array_map('filemtime', $files);
$map = array_combine($fileTimes, $files);
$latest = max($fileTimes);
return basename($map[$latest], self::OLD_INSTALL_EXT);
}
protected function getOldInstallationFiles($rollbackDir)
{
return glob($rollbackDir . '/*' . self::OLD_INSTALL_EXT);
}
protected function getLatestVersion()
{
if (!$this->latestVersion) {
$this->latestVersion = trim($this->remoteFS->getContents(self::HOMEPAGE, $this->homepageURL. '/version', false));
}
return $this->latestVersion;
}
}