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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\Repository\Vcs;
use Composer\Config;
use Composer\Cache;
use Composer\IO\IOInterface;
use Composer\Json\JsonFile;
use Composer\Downloader\TransportException;
use Composer\Util\HttpDownloader;
use Composer\Util\GitLab;
use Composer\Util\Http\Response;
/**
* Driver for GitLab API, use the Git driver for local checkouts.
*
* @author Henrik Bjørnskov <henrik@bjrnskov.dk>
* @author Jérôme Tamarelle <jerome@tamarelle.net>
*/
class GitLabDriver extends VcsDriver
{
private $scheme;
private $namespace;
private $repository;
/**
* @var array Project data returned by GitLab API
*/
private $project;
/**
* @var array Keeps commits returned by GitLab API
*/
private $commits = array();
/**
* @var array List of tag => reference
*/
private $tags;
/**
* @var array List of branch => reference
*/
private $branches;
/**
* Git Driver
*
* @var ?GitDriver
*/
protected $gitDriver = null;
/**
* Protocol to force use of for repository URLs.
*
* @var string One of ssh, http
*/
protected $protocol;
/**
* Defaults to true unless we can make sure it is public
*
* @var bool defines whether the repo is private or not
*/
private $isPrivate = true;
/**
* @var bool true if the origin has a port number or a path component in it
*/
private $hasNonstandardOrigin = false;
const URL_REGEX = '#^(?:(?P<scheme>https?)://(?P<domain>.+?)(?::(?P<port>[0-9]+))?/|git@(?P<domain2>[^:]+):)(?P<parts>.+)/(?P<repo>[^/]+?)(?:\.git|/)?$#';
/**
* Extracts information from the repository url.
*
* SSH urls use https by default. Set "secure-http": false on the repository config to use http instead.
*
* {@inheritDoc}
*/
public function initialize()
{
if (!preg_match(self::URL_REGEX, $this->url, $match)) {
throw new \InvalidArgumentException('The URL provided is invalid. It must be the HTTP URL of a GitLab project.');
}
$guessedDomain = !empty($match['domain']) ? $match['domain'] : $match['domain2'];
$configuredDomains = $this->config->get('gitlab-domains');
$urlParts = explode('/', $match['parts']);
$this->scheme = !empty($match['scheme'])
? $match['scheme']
: (isset($this->repoConfig['secure-http']) && $this->repoConfig['secure-http'] === false ? 'http' : 'https')
;
$this->originUrl = self::determineOrigin($configuredDomains, $guessedDomain, $urlParts, $match['port']);
if ($protocol = $this->config->get('gitlab-protocol')) {
// https treated as a synonym for http.
if (!in_array($protocol, array('git', 'http', 'https'))) {
throw new \RuntimeException('gitlab-protocol must be one of git, http.');
}
$this->protocol = $protocol === 'git' ? 'ssh' : 'http';
}
if (false !== strpos($this->originUrl, ':') || false !== strpos($this->originUrl, '/')) {
$this->hasNonstandardOrigin = true;
}
$this->namespace = implode('/', $urlParts);
$this->repository = preg_replace('#(\.git)$#', '', $match['repo']);
$this->cache = new Cache($this->io, $this->config->get('cache-repo-dir').'/'.$this->originUrl.'/'.$this->namespace.'/'.$this->repository);
$this->cache->setReadOnly($this->config->get('cache-read-only'));
$this->fetchProject();
}
/**
* Updates the HttpDownloader instance.
* Mainly useful for tests.
*
* @internal
*/
public function setHttpDownloader(HttpDownloader $httpDownloader)
{
$this->httpDownloader = $httpDownloader;
}
/**
* {@inheritDoc}
*/
public function getComposerInformation($identifier)
{
if ($this->gitDriver) {
return $this->gitDriver->getComposerInformation($identifier);
}
if (!isset($this->infoCache[$identifier])) {
if ($this->shouldCache($identifier) && $res = $this->cache->read($identifier)) {
$composer = JsonFile::parseJson($res);
} else {
$composer = $this->getBaseComposerInformation($identifier);
if ($this->shouldCache($identifier)) {
$this->cache->write($identifier, json_encode($composer));
}
}
if ($composer) {
// specials for gitlab (this data is only available if authentication is provided)
if (!isset($composer['support']['issues']) && isset($this->project['_links']['issues'])) {
$composer['support']['issues'] = $this->project['_links']['issues'];
}
if (!isset($composer['abandoned']) && !empty($this->project['archived'])) {
$composer['abandoned'] = true;
}
}
$this->infoCache[$identifier] = $composer;
}
return $this->infoCache[$identifier];
}
/**
* {@inheritdoc}
*/
public function getFileContent($file, $identifier)
{
if ($this->gitDriver) {
return $this->gitDriver->getFileContent($file, $identifier);
}
// Convert the root identifier to a cacheable commit id
if (!preg_match('{[a-f0-9]{40}}i', $identifier)) {
$branches = $this->getBranches();
if (isset($branches[$identifier])) {
$identifier = $branches[$identifier];
}
}
$resource = $this->getApiUrl().'/repository/files/'.$this->urlEncodeAll($file).'/raw?ref='.$identifier;
try {
$content = $this->getContents($resource)->getBody();
} catch (TransportException $e) {
if ($e->getCode() !== 404) {
throw $e;
}
return null;
}
return $content;
}
/**
* {@inheritdoc}
*/
public function getChangeDate($identifier)
{
if ($this->gitDriver) {
return $this->gitDriver->getChangeDate($identifier);
}
if (isset($this->commits[$identifier])) {
return new \DateTime($this->commits[$identifier]['committed_date']);
}
return new \DateTime();
}
/**
* {@inheritDoc}
*/
public function getRepositoryUrl()
{
if ($this->protocol) {
return $this->project["{$this->protocol}_url_to_repo"];
}
return $this->isPrivate ? $this->project['ssh_url_to_repo'] : $this->project['http_url_to_repo'];
}
/**
* {@inheritDoc}
*/
public function getUrl()
{
if ($this->gitDriver) {
return $this->gitDriver->getUrl();
}
return $this->project['web_url'];
}
/**
* {@inheritDoc}
*/
public function getDist($identifier)
{
$url = $this->getApiUrl().'/repository/archive.zip?sha='.$identifier;
return array('type' => 'zip', 'url' => $url, 'reference' => $identifier, 'shasum' => '');
}
/**
* {@inheritDoc}
*/
public function getSource($identifier)
{
if ($this->gitDriver) {
return $this->gitDriver->getSource($identifier);
}
return array('type' => 'git', 'url' => $this->getRepositoryUrl(), 'reference' => $identifier);
}
/**
* {@inheritDoc}
*/
public function getRootIdentifier()
{
if ($this->gitDriver) {
return $this->gitDriver->getRootIdentifier();
}
return $this->project['default_branch'];
}
/**
* {@inheritDoc}
*/
public function getBranches()
{
if ($this->gitDriver) {
return $this->gitDriver->getBranches();
}
if (!$this->branches) {
$this->branches = $this->getReferences('branches');
}
return $this->branches;
}
/**
* {@inheritDoc}
*/
public function getTags()
{
if ($this->gitDriver) {
return $this->gitDriver->getTags();
}
if (!$this->tags) {
$this->tags = $this->getReferences('tags');
}
return $this->tags;
}
/**
* @return string Base URL for GitLab API v3
*/
public function getApiUrl()
{
return $this->scheme.'://'.$this->originUrl.'/api/v4/projects/'.$this->urlEncodeAll($this->namespace).'%2F'.$this->urlEncodeAll($this->repository);
}
/**
* Urlencode all non alphanumeric characters. rawurlencode() can not be used as it does not encode `.`
*
* @param string $string
* @return string
*/
private function urlEncodeAll($string)
{
$encoded = '';
for ($i = 0; isset($string[$i]); $i++) {
$character = $string[$i];
if (!ctype_alnum($character) && !in_array($character, array('-', '_'), true)) {
$character = '%' . sprintf('%02X', ord($character));
}
$encoded .= $character;
}
return $encoded;
}
/**
* @param string $type
*
* @return string[] where keys are named references like tags or branches and the value a sha
*/
protected function getReferences($type)
{
$perPage = 100;
$resource = $this->getApiUrl().'/repository/'.$type.'?per_page='.$perPage;
$references = array();
do {
$response = $this->getContents($resource);
$data = $response->decodeJson();
foreach ($data as $datum) {
$references[$datum['name']] = $datum['commit']['id'];
// Keep the last commit date of a reference to avoid
// unnecessary API call when retrieving the composer file.
$this->commits[$datum['commit']['id']] = $datum['commit'];
}
if (count($data) >= $perPage) {
$resource = $this->getNextPage($response);
} else {
$resource = false;
}
} while ($resource);
return $references;
}
protected function fetchProject()
{
// we need to fetch the default branch from the api
$resource = $this->getApiUrl();
$this->project = $this->getContents($resource, true)->decodeJson();
if (isset($this->project['visibility'])) {
$this->isPrivate = $this->project['visibility'] !== 'public';
} else {
// client is not authenticated, therefore repository has to be public
$this->isPrivate = false;
}
}
protected function attemptCloneFallback()
{
if ($this->isPrivate === false) {
$url = $this->generatePublicUrl();
} else {
$url = $this->generateSshUrl();
}
try {
// If this repository may be private and we
// cannot ask for authentication credentials (because we
// are not interactive) then we fallback to GitDriver.
$this->setupGitDriver($url);
return true;
} catch (\RuntimeException $e) {
$this->gitDriver = null;
$this->io->writeError('<error>Failed to clone the '.$url.' repository, try running in interactive mode so that you can enter your credentials</error>');
throw $e;
}
}
/**
* Generate an SSH URL
*
* @return string
*/
protected function generateSshUrl()
{
if ($this->hasNonstandardOrigin) {
return 'ssh://git@'.$this->originUrl.'/'.$this->namespace.'/'.$this->repository.'.git';
}
return 'git@' . $this->originUrl . ':'.$this->namespace.'/'.$this->repository.'.git';
}
protected function generatePublicUrl()
{
return $this->scheme . '://' . $this->originUrl . '/'.$this->namespace.'/'.$this->repository.'.git';
}
protected function setupGitDriver($url)
{
$this->gitDriver = new GitDriver(
array('url' => $url),
$this->io,
$this->config,
$this->httpDownloader,
$this->process
);
$this->gitDriver->initialize();
}
/**
* {@inheritDoc}
*/
protected function getContents($url, $fetchingRepoData = false)
{
try {
$response = parent::getContents($url);
if ($fetchingRepoData) {
$json = $response->decodeJson();
// Accessing the API with a token with Guest (10) access will return
// more data than unauthenticated access but no default_branch data
// accessing files via the API will then also fail
if (!isset($json['default_branch']) && isset($json['permissions'])) {
$this->isPrivate = $json['visibility'] !== 'public';
$moreThanGuestAccess = false;
// Check both access levels (e.g. project, group)
// - value will be null if no access is set
// - value will be array with key access_level if set
foreach ($json['permissions'] as $permission) {
if ($permission && $permission['access_level'] > 10) {
$moreThanGuestAccess = true;
}
}
if (!$moreThanGuestAccess) {
$this->io->writeError('<warning>GitLab token with Guest only access detected</warning>');
return $this->attemptCloneFallback();
}
}
// force auth as the unauthenticated version of the API is broken
if (!isset($json['default_branch'])) {
if (!empty($json['id'])) {
$this->isPrivate = false;
}
throw new TransportException('GitLab API seems to not be authenticated as it did not return a default_branch', 401);
}
}
return $response;
} catch (TransportException $e) {
$gitLabUtil = new GitLab($this->io, $this->config, $this->process, $this->httpDownloader);
switch ($e->getCode()) {
case 401:
case 404:
// try to authorize only if we are fetching the main /repos/foo/bar data, otherwise it must be a real 404
if (!$fetchingRepoData) {
throw $e;
}
if ($gitLabUtil->authorizeOAuth($this->originUrl)) {
return parent::getContents($url);
}
if (!$this->io->isInteractive()) {
if ($this->attemptCloneFallback()) {
return new Response(array('url' => 'dummy'), 200, array(), 'null');
}
}
$this->io->writeError('<warning>Failed to download ' . $this->namespace . '/' . $this->repository . ':' . $e->getMessage() . '</warning>');
$gitLabUtil->authorizeOAuthInteractively($this->scheme, $this->originUrl, 'Your credentials are required to fetch private repository metadata (<info>'.$this->url.'</info>)');
return parent::getContents($url);
case 403:
if (!$this->io->hasAuthentication($this->originUrl) && $gitLabUtil->authorizeOAuth($this->originUrl)) {
return parent::getContents($url);
}
if (!$this->io->isInteractive() && $fetchingRepoData) {
if ($this->attemptCloneFallback()) {
return new Response(array('url' => 'dummy'), 200, array(), 'null');
}
}
throw $e;
default:
throw $e;
}
}
}
/**
* Uses the config `gitlab-domains` to see if the driver supports the url for the
* repository given.
*
* {@inheritDoc}
*/
public static function supports(IOInterface $io, Config $config, $url, $deep = false)
{
if (!preg_match(self::URL_REGEX, $url, $match)) {
return false;
}
$scheme = !empty($match['scheme']) ? $match['scheme'] : null;
$guessedDomain = !empty($match['domain']) ? $match['domain'] : $match['domain2'];
$urlParts = explode('/', $match['parts']);
if (false === self::determineOrigin((array) $config->get('gitlab-domains'), $guessedDomain, $urlParts, $match['port'])) {
return false;
}
if ('https' === $scheme && !extension_loaded('openssl')) {
$io->writeError('Skipping GitLab driver for '.$url.' because the OpenSSL PHP extension is missing.', true, IOInterface::VERBOSE);
return false;
}
return true;
}
protected function getNextPage(Response $response)
{
$header = $response->getHeader('link');
$links = explode(',', $header);
foreach ($links as $link) {
if (preg_match('{<(.+?)>; *rel="next"}', $link, $match)) {
return $match[1];
}
}
}
/**
* @param array $configuredDomains
* @param string $guessedDomain
* @param array $urlParts
* @return bool|string
*/
private static function determineOrigin(array $configuredDomains, $guessedDomain, array &$urlParts, $portNumber)
{
$guessedDomain = strtolower($guessedDomain);
if (in_array($guessedDomain, $configuredDomains) || ($portNumber && in_array($guessedDomain.':'.$portNumber, $configuredDomains))) {
if ($portNumber) {
return $guessedDomain.':'.$portNumber;
}
return $guessedDomain;
}
if ($portNumber) {
$guessedDomain .= ':'.$portNumber;
}
while (null !== ($part = array_shift($urlParts))) {
$guessedDomain .= '/' . $part;
if (in_array($guessedDomain, $configuredDomains) || ($portNumber && in_array(preg_replace('{:\d+}', '', $guessedDomain), $configuredDomains))) {
return $guessedDomain;
}
}
return false;
}
}