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<?php declare(strict_types=1);
/*
* 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\Util;
use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Downloader\TransportException;
use Composer\Pcre\Preg;
/**
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
class AuthHelper
{
/** @var IOInterface */
protected $io;
/** @var Config */
protected $config;
/** @var array<string, string> Map of origins to message displayed */
private $displayedOriginAuthentications = [];
/** @var array<string, bool> Map of URLs and whether they already retried with authentication from Bitbucket */
private $bitbucketRetry = [];
public function __construct(IOInterface $io, Config $config)
{
$this->io = $io;
$this->config = $config;
}
/**
* @param 'prompt'|bool $storeAuth
*/
public function storeAuth(string $origin, $storeAuth): void
{
$store = false;
$configSource = $this->config->getAuthConfigSource();
if ($storeAuth === true) {
$store = $configSource;
} elseif ($storeAuth === 'prompt') {
$answer = $this->io->askAndValidate(
'Do you want to store credentials for '.$origin.' in '.$configSource->getName().' ? [Yn] ',
static function ($value): string {
$input = strtolower(substr(trim($value), 0, 1));
if (in_array($input, ['y','n'])) {
return $input;
}
throw new \RuntimeException('Please answer (y)es or (n)o');
},
null,
'y'
);
if ($answer === 'y') {
$store = $configSource;
}
}
if ($store) {
$store->addConfigSetting(
'http-basic.'.$origin,
$this->io->getAuthentication($origin)
);
}
}
/**
* @param int $statusCode HTTP status code that triggered this call
* @param string|null $reason a message/description explaining why this was called
* @param string[] $headers
* @param int $retryCount the amount of retries already done on this URL
* @return array containing retry (bool) and storeAuth (string|bool) keys, if retry is true the request should be
* retried, if storeAuth is true then on a successful retry the authentication should be persisted to auth.json
* @phpstan-return array{retry: bool, storeAuth: 'prompt'|bool}
*/
public function promptAuthIfNeeded(string $url, string $origin, int $statusCode, ?string $reason = null, array $headers = [], int $retryCount = 0): array
{
$storeAuth = false;
if (in_array($origin, $this->config->get('github-domains'), true)) {
$gitHubUtil = new GitHub($this->io, $this->config, null);
$message = "\n";
$rateLimited = $gitHubUtil->isRateLimited($headers);
$requiresSso = $gitHubUtil->requiresSso($headers);
if ($requiresSso) {
$ssoUrl = $gitHubUtil->getSsoUrl($headers);
$message = 'GitHub API token requires SSO authorization. Authorize this token at ' . $ssoUrl . "\n";
$this->io->writeError($message);
if (!$this->io->isInteractive()) {
throw new TransportException('Could not authenticate against ' . $origin, 403);
}
$this->io->ask('After authorizing your token, confirm that you would like to retry the request');
return ['retry' => true, 'storeAuth' => $storeAuth];
}
if ($rateLimited) {
$rateLimit = $gitHubUtil->getRateLimit($headers);
if ($this->io->hasAuthentication($origin)) {
$message = 'Review your configured GitHub OAuth token or enter a new one to go over the API rate limit.';
} else {
$message = 'Create a GitHub OAuth token to go over the API rate limit.';
}
$message = sprintf(
'GitHub API limit (%d calls/hr) is exhausted, could not fetch '.$url.'. '.$message.' You can also wait until %s for the rate limit to reset.',
$rateLimit['limit'],
$rateLimit['reset']
)."\n";
} else {
$message .= 'Could not fetch '.$url.', please ';
if ($this->io->hasAuthentication($origin)) {
$message .= 'review your configured GitHub OAuth token or enter a new one to access private repos';
} else {
$message .= 'create a GitHub OAuth token to access private repos';
}
}
if (!$gitHubUtil->authorizeOAuth($origin)
&& (!$this->io->isInteractive() || !$gitHubUtil->authorizeOAuthInteractively($origin, $message))
) {
throw new TransportException('Could not authenticate against '.$origin, 401);
}
} elseif (in_array($origin, $this->config->get('gitlab-domains'), true)) {
$message = "\n".'Could not fetch '.$url.', enter your ' . $origin . ' credentials ' .($statusCode === 401 ? 'to access private repos' : 'to go over the API rate limit');
$gitLabUtil = new GitLab($this->io, $this->config, null);
$auth = null;
if ($this->io->hasAuthentication($origin)) {
$auth = $this->io->getAuthentication($origin);
if (in_array($auth['password'], ['gitlab-ci-token', 'private-token', 'oauth2'], true)) {
throw new TransportException("Invalid credentials for '" . $url . "', aborting.", $statusCode);
}
}
if (!$gitLabUtil->authorizeOAuth($origin)
&& (!$this->io->isInteractive() || !$gitLabUtil->authorizeOAuthInteractively(parse_url($url, PHP_URL_SCHEME), $origin, $message))
) {
throw new TransportException('Could not authenticate against '.$origin, 401);
}
if ($auth !== null && $this->io->hasAuthentication($origin)) {
if ($auth === $this->io->getAuthentication($origin)) {
throw new TransportException("Invalid credentials for '" . $url . "', aborting.", $statusCode);
}
}
} elseif ($origin === 'bitbucket.org' || $origin === 'api.bitbucket.org') {
$askForOAuthToken = true;
$origin = 'bitbucket.org';
if ($this->io->hasAuthentication($origin)) {
$auth = $this->io->getAuthentication($origin);
if ($auth['username'] !== 'x-token-auth') {
$bitbucketUtil = new Bitbucket($this->io, $this->config);
$accessToken = $bitbucketUtil->requestToken($origin, $auth['username'], $auth['password']);
if (!empty($accessToken)) {
$this->io->setAuthentication($origin, 'x-token-auth', $accessToken);
$askForOAuthToken = false;
}
} elseif (!isset($this->bitbucketRetry[$url])) {
// when multiple requests fire at the same time, they will all fail and the first one resets the token to be correct above but then the others
// reach the code path and without this fallback they would end up throwing below
// see https://github.com/composer/composer/pull/11464 for more details
$askForOAuthToken = false;
$this->bitbucketRetry[$url] = true;
} else {
throw new TransportException('Could not authenticate against ' . $origin, 401);
}
}
if ($askForOAuthToken) {
$message = "\n".'Could not fetch ' . $url . ', please create a bitbucket OAuth token to ' . (($statusCode === 401 || $statusCode === 403) ? 'access private repos' : 'go over the API rate limit');
$bitBucketUtil = new Bitbucket($this->io, $this->config);
if (!$bitBucketUtil->authorizeOAuth($origin)
&& (!$this->io->isInteractive() || !$bitBucketUtil->authorizeOAuthInteractively($origin, $message))
) {
throw new TransportException('Could not authenticate against ' . $origin, 401);
}
}
} else {
// 404s are only handled for github
if ($statusCode === 404) {
return ['retry' => false, 'storeAuth' => false];
}
// fail if the console is not interactive
if (!$this->io->isInteractive()) {
if ($statusCode === 401) {
$message = "The '" . $url . "' URL required authentication (HTTP 401).\nYou must be using the interactive console to authenticate";
} elseif ($statusCode === 403) {
$message = "The '" . $url . "' URL could not be accessed (HTTP 403): " . $reason;
} else {
$message = "Unknown error code '" . $statusCode . "', reason: " . $reason;
}
throw new TransportException($message, $statusCode);
}
// fail if we already have auth
if ($this->io->hasAuthentication($origin)) {
// if two or more requests are started together for the same host, and the first
// received authentication already, we let the others retry before failing them
if ($retryCount === 0) {
return ['retry' => true, 'storeAuth' => false];
}
throw new TransportException("Invalid credentials (HTTP $statusCode) for '$url', aborting.", $statusCode);
}
$this->io->writeError(' Authentication required (<info>'.$origin.'</info>):');
$username = $this->io->ask(' Username: ');
$password = $this->io->askAndHideAnswer(' Password: ');
$this->io->setAuthentication($origin, $username, $password);
$storeAuth = $this->config->get('store-auths');
}
return ['retry' => true, 'storeAuth' => $storeAuth];
}
/**
* @param string[] $headers
*
* @return string[] updated headers array
*/
public function addAuthenticationHeader(array $headers, string $origin, string $url): array
{
if ($this->io->hasAuthentication($origin)) {
$authenticationDisplayMessage = null;
$auth = $this->io->getAuthentication($origin);
if ($auth['password'] === 'bearer') {
$headers[] = 'Authorization: Bearer '.$auth['username'];
} elseif ('github.com' === $origin && 'x-oauth-basic' === $auth['password']) {
// only add the access_token if it is actually a github API URL
if (Preg::isMatch('{^https?://api\.github\.com/}', $url)) {
$headers[] = 'Authorization: token '.$auth['username'];
$authenticationDisplayMessage = 'Using GitHub token authentication';
}
} elseif (
in_array($origin, $this->config->get('gitlab-domains'), true)
&& in_array($auth['password'], ['oauth2', 'private-token', 'gitlab-ci-token'], true)
) {
if ($auth['password'] === 'oauth2') {
$headers[] = 'Authorization: Bearer '.$auth['username'];
$authenticationDisplayMessage = 'Using GitLab OAuth token authentication';
} else {
$headers[] = 'PRIVATE-TOKEN: '.$auth['username'];
$authenticationDisplayMessage = 'Using GitLab private token authentication';
}
} elseif (
'bitbucket.org' === $origin
&& $url !== Bitbucket::OAUTH2_ACCESS_TOKEN_URL
&& 'x-token-auth' === $auth['username']
) {
if (!$this->isPublicBitBucketDownload($url)) {
$headers[] = 'Authorization: Bearer ' . $auth['password'];
$authenticationDisplayMessage = 'Using Bitbucket OAuth token authentication';
}
} else {
$authStr = base64_encode($auth['username'] . ':' . $auth['password']);
$headers[] = 'Authorization: Basic '.$authStr;
$authenticationDisplayMessage = 'Using HTTP basic authentication with username "' . $auth['username'] . '"';
}
if ($authenticationDisplayMessage && (!isset($this->displayedOriginAuthentications[$origin]) || $this->displayedOriginAuthentications[$origin] !== $authenticationDisplayMessage)) {
$this->io->writeError($authenticationDisplayMessage, true, IOInterface::DEBUG);
$this->displayedOriginAuthentications[$origin] = $authenticationDisplayMessage;
}
} elseif (in_array($origin, ['api.bitbucket.org', 'api.github.com'], true)) {
return $this->addAuthenticationHeader($headers, str_replace('api.', '', $origin), $url);
}
return $headers;
}
/**
* @link https://github.com/composer/composer/issues/5584
*
* @param string $urlToBitBucketFile URL to a file at bitbucket.org.
*
* @return bool Whether the given URL is a public BitBucket download which requires no authentication.
*/
public function isPublicBitBucketDownload(string $urlToBitBucketFile): bool
{
$domain = parse_url($urlToBitBucketFile, PHP_URL_HOST);
if (strpos($domain, 'bitbucket.org') === false) {
// Bitbucket downloads are hosted on amazonaws.
// We do not need to authenticate there at all
return true;
}
$path = parse_url($urlToBitBucketFile, PHP_URL_PATH);
// Path for a public download follows this pattern /{user}/{repo}/downloads/{whatever}
// {@link https://blog.bitbucket.org/2009/04/12/new-feature-downloads/}
$pathParts = explode('/', $path);
return count($pathParts) >= 4 && $pathParts[3] === 'downloads';
}
}