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<?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\Package;
use Composer\Json\JsonFile;
use Composer\Installer\InstallationManager;
use Composer\Repository\LockArrayRepository;
use Composer\Util\ProcessExecutor;
use Composer\Package\Dumper\ArrayDumper;
use Composer\Package\Loader\ArrayLoader;
use Composer\Package\Version\VersionParser;
use Composer\Plugin\PluginInterface;
use Composer\Util\Git as GitUtil;
use Composer\IO\IOInterface;
use Seld\JsonLint\ParsingException;
/**
* Reads/writes project lockfile (composer.lock).
*
* @author Konstantin Kudryashiv <ever.zet@gmail.com>
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
class Locker
{
/** @var JsonFile */
private $lockFile;
/** @var InstallationManager */
private $installationManager;
/** @var string */
private $hash;
/** @var string */
private $contentHash;
/** @var ArrayLoader */
private $loader;
/** @var ArrayDumper */
private $dumper;
/** @var ProcessExecutor */
private $process;
private $lockDataCache;
private $virtualFileWritten;
/**
* Initializes packages locker.
*
* @param IOInterface $io
* @param JsonFile $lockFile lockfile loader
* @param InstallationManager $installationManager installation manager instance
* @param string $composerFileContents The contents of the composer file
*/
public function __construct(IOInterface $io, JsonFile $lockFile, InstallationManager $installationManager, $composerFileContents, ProcessExecutor $process = null)
{
$this->lockFile = $lockFile;
$this->installationManager = $installationManager;
$this->hash = md5($composerFileContents);
$this->contentHash = self::getContentHash($composerFileContents);
$this->loader = new ArrayLoader(null, true);
$this->dumper = new ArrayDumper();
$this->process = $process ?: new ProcessExecutor($io);
}
/**
* Returns the md5 hash of the sorted content of the composer file.
*
* @param string $composerFileContents The contents of the composer file.
*
* @return string
*/
public static function getContentHash($composerFileContents)
{
$content = json_decode($composerFileContents, true);
$relevantKeys = array(
'name',
'version',
'require',
'require-dev',
'conflict',
'replace',
'provide',
'minimum-stability',
'prefer-stable',
'repositories',
'extra',
);
$relevantContent = array();
foreach (array_intersect($relevantKeys, array_keys($content)) as $key) {
$relevantContent[$key] = $content[$key];
}
if (isset($content['config']['platform'])) {
$relevantContent['config']['platform'] = $content['config']['platform'];
}
ksort($relevantContent);
return md5(json_encode($relevantContent));
}
/**
* Checks whether locker has been locked (lockfile found).
*
* @return bool
*/
public function isLocked()
{
if (!$this->virtualFileWritten && !$this->lockFile->exists()) {
return false;
}
$data = $this->getLockData();
return isset($data['packages']);
}
/**
* Checks whether the lock file is still up to date with the current hash
*
* @return bool
*/
public function isFresh()
{
$lock = $this->lockFile->read();
if (!empty($lock['content-hash'])) {
// There is a content hash key, use that instead of the file hash
return $this->contentHash === $lock['content-hash'];
}
// BC support for old lock files without content-hash
if (!empty($lock['hash'])) {
return $this->hash === $lock['hash'];
}
// should not be reached unless the lock file is corrupted, so assume it's out of date
return false;
}
/**
* Searches and returns an array of locked packages, retrieved from registered repositories.
*
* @param bool $withDevReqs true to retrieve the locked dev packages
* @throws \RuntimeException
* @return \Composer\Repository\LockArrayRepository
*/
public function getLockedRepository($withDevReqs = false)
{
$lockData = $this->getLockData();
$packages = new LockArrayRepository();
$lockedPackages = $lockData['packages'];
if ($withDevReqs) {
if (isset($lockData['packages-dev'])) {
$lockedPackages = array_merge($lockedPackages, $lockData['packages-dev']);
} else {
throw new \RuntimeException('The lock file does not contain require-dev information, run install with the --no-dev option or delete it and run composer update to generate a new lock file.');
}
}
if (empty($lockedPackages)) {
return $packages;
}
if (isset($lockedPackages[0]['name'])) {
$packageByName = array();
foreach ($lockedPackages as $info) {
$package = $this->loader->load($info);
$packages->addPackage($package);
$packageByName[$package->getName()] = $package;
if ($package instanceof AliasPackage) {
$packageByName[$package->getAliasOf()->getName()] = $package->getAliasOf();
}
}
if (isset($lockData['aliases'])) {
foreach ($lockData['aliases'] as $alias) {
if (isset($packageByName[$alias['package']])) {
$aliasPkg = new AliasPackage($packageByName[$alias['package']], $alias['alias_normalized'], $alias['alias']);
$aliasPkg->setRootPackageAlias(true);
$packages->addPackage($aliasPkg);
}
}
}
return $packages;
}
throw new \RuntimeException('Your composer.lock is invalid. Run "composer update" to generate a new one.');
}
/**
* @return string[] Names of dependencies installed through require-dev
*/
public function getDevPackageNames()
{
$names = array();
$lockData = $this->getLockData();
if (isset($lockData['packages-dev'])) {
foreach ($lockData['packages-dev'] as $package) {
$names[] = strtolower($package['name']);
}
}
return $names;
}
/**
* Returns the platform requirements stored in the lock file
*
* @param bool $withDevReqs if true, the platform requirements from the require-dev block are also returned
* @return \Composer\Package\Link[]
*/
public function getPlatformRequirements($withDevReqs = false)
{
$lockData = $this->getLockData();
$requirements = array();
if (!empty($lockData['platform'])) {
$requirements = $this->loader->parseLinks(
'__root__',
'1.0.0',
Link::TYPE_REQUIRE,
isset($lockData['platform']) ? $lockData['platform'] : array()
);
}
if ($withDevReqs && !empty($lockData['platform-dev'])) {
$devRequirements = $this->loader->parseLinks(
'__root__',
'1.0.0',
Link::TYPE_REQUIRE,
isset($lockData['platform-dev']) ? $lockData['platform-dev'] : array()
);
$requirements = array_merge($requirements, $devRequirements);
}
return $requirements;
}
public function getMinimumStability()
{
$lockData = $this->getLockData();
return isset($lockData['minimum-stability']) ? $lockData['minimum-stability'] : 'stable';
}
public function getStabilityFlags()
{
$lockData = $this->getLockData();
return isset($lockData['stability-flags']) ? $lockData['stability-flags'] : array();
}
public function getPreferStable()
{
$lockData = $this->getLockData();
// return null if not set to allow caller logic to choose the
// right behavior since old lock files have no prefer-stable
return isset($lockData['prefer-stable']) ? $lockData['prefer-stable'] : null;
}
public function getPreferLowest()
{
$lockData = $this->getLockData();
// return null if not set to allow caller logic to choose the
// right behavior since old lock files have no prefer-lowest
return isset($lockData['prefer-lowest']) ? $lockData['prefer-lowest'] : null;
}
public function getPlatformOverrides()
{
$lockData = $this->getLockData();
return isset($lockData['platform-overrides']) ? $lockData['platform-overrides'] : array();
}
public function getAliases()
{
$lockData = $this->getLockData();
return isset($lockData['aliases']) ? $lockData['aliases'] : array();
}
public function getLockData()
{
if (null !== $this->lockDataCache) {
return $this->lockDataCache;
}
if (!$this->lockFile->exists()) {
throw new \LogicException('No lockfile found. Unable to read locked packages');
}
return $this->lockDataCache = $this->lockFile->read();
}
/**
* Locks provided data into lockfile.
*
* @param array $packages array of packages
* @param mixed $devPackages array of dev packages or null if installed without --dev
* @param array $platformReqs array of package name => constraint for required platform packages
* @param mixed $platformDevReqs array of package name => constraint for dev-required platform packages
* @param array $aliases array of aliases
* @param string $minimumStability
* @param array $stabilityFlags
* @param bool $preferStable
* @param bool $preferLowest
* @param array $platformOverrides
* @param bool $write Whether to actually write data to disk, useful in tests and for --dry-run
*
* @return bool
*/
public function setLockData(array $packages, $devPackages, array $platformReqs, $platformDevReqs, array $aliases, $minimumStability, array $stabilityFlags, $preferStable, $preferLowest, array $platformOverrides, $write = true)
{
// keep old default branch names normalized to DEFAULT_BRANCH_ALIAS for BC as that is how Composer 1 outputs the lock file
// when loading the lock file the version is anyway ignored in Composer 2, so it has no adverse effect
$aliases = array_map(function ($alias) {
if (in_array($alias['version'], array('dev-master', 'dev-trunk', 'dev-default'), true)) {
$alias['version'] = VersionParser::DEFAULT_BRANCH_ALIAS;
}
return $alias;
}, $aliases);
$lock = array(
'_readme' => array('This file locks the dependencies of your project to a known state',
'Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies',
'This file is @gener'.'ated automatically', ),
'content-hash' => $this->contentHash,
'packages' => null,
'packages-dev' => null,
'aliases' => $aliases,
'minimum-stability' => $minimumStability,
'stability-flags' => $stabilityFlags,
'prefer-stable' => $preferStable,
'prefer-lowest' => $preferLowest,
);
$lock['packages'] = $this->lockPackages($packages);
if (null !== $devPackages) {
$lock['packages-dev'] = $this->lockPackages($devPackages);
}
$lock['platform'] = $platformReqs;
$lock['platform-dev'] = $platformDevReqs;
if ($platformOverrides) {
$lock['platform-overrides'] = $platformOverrides;
}
$lock['plugin-api-version'] = PluginInterface::PLUGIN_API_VERSION;
try {
$isLocked = $this->isLocked();
} catch (ParsingException $e) {
$isLocked = false;
}
if (!$isLocked || $lock !== $this->getLockData()) {
if ($write) {
$this->lockFile->write($lock);
$this->lockDataCache = null;
$this->virtualFileWritten = false;
} else {
$this->virtualFileWritten = true;
$this->lockDataCache = JsonFile::parseJson(JsonFile::encode($lock, 448 & JsonFile::JSON_PRETTY_PRINT));
}
return true;
}
return false;
}
private function lockPackages(array $packages)
{
$locked = array();
foreach ($packages as $package) {
if ($package instanceof AliasPackage) {
continue;
}
$name = $package->getPrettyName();
$version = $package->getPrettyVersion();
if (!$name || !$version) {
throw new \LogicException(sprintf(
'Package "%s" has no version or name and can not be locked',
$package
));
}
$spec = $this->dumper->dump($package);
unset($spec['version_normalized']);
// always move time to the end of the package definition
$time = isset($spec['time']) ? $spec['time'] : null;
unset($spec['time']);
if ($package->isDev() && $package->getInstallationSource() === 'source') {
// use the exact commit time of the current reference if it's a dev package
$time = $this->getPackageTime($package) ?: $time;
}
if (null !== $time) {
$spec['time'] = $time;
}
unset($spec['installation-source']);
$locked[] = $spec;
}
usort($locked, function ($a, $b) {
$comparison = strcmp($a['name'], $b['name']);
if (0 !== $comparison) {
return $comparison;
}
// If it is the same package, compare the versions to make the order deterministic
return strcmp($a['version'], $b['version']);
});
return $locked;
}
/**
* Returns the packages's datetime for its source reference.
*
* @param PackageInterface $package The package to scan.
* @return string|null The formatted datetime or null if none was found.
*/
private function getPackageTime(PackageInterface $package)
{
if (!function_exists('proc_open')) {
return null;
}
$path = realpath($this->installationManager->getInstallPath($package));
$sourceType = $package->getSourceType();
$datetime = null;
if ($path && in_array($sourceType, array('git', 'hg'))) {
$sourceRef = $package->getSourceReference() ?: $package->getDistReference();
switch ($sourceType) {
case 'git':
GitUtil::cleanEnv();
if (0 === $this->process->execute('git log -n1 --pretty=%ct '.ProcessExecutor::escape($sourceRef).GitUtil::getNoShowSignatureFlag($this->process), $output, $path) && preg_match('{^\s*\d+\s*$}', $output)) {
$datetime = new \DateTime('@'.trim($output), new \DateTimeZone('UTC'));
}
break;
case 'hg':
if (0 === $this->process->execute('hg log --template "{date|hgdate}" -r '.ProcessExecutor::escape($sourceRef), $output, $path) && preg_match('{^\s*(\d+)\s*}', $output, $match)) {
$datetime = new \DateTime('@'.$match[1], new \DateTimeZone('UTC'));
}
break;
}
}
return $datetime ? $datetime->format(DATE_RFC3339) : null;
}
}
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