<?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\Util;
use Composer\Config;
use Composer\IO\IOInterface;
use Composer\Downloader\TransportException;
/**
* @author François Pluchino < francois.pluchino @ opendisplay . com >
* @author Jordi Boggiano < j.boggiano @ seld . be >
* @author Nils Adermann < naderman @ naderman . de >
*/
class RemoteFilesystem
{
private $io;
private $config;
private $scheme;
private $bytesMax;
private $originUrl;
private $fileUrl;
private $fileName;
private $retry;
private $progress;
private $lastProgress;
private $options = array();
private $peerCertificateMap = array();
private $disableTls = false;
private $retryAuthFailure;
private $lastHeaders;
private $storeAuth;
private $degradedMode = false;
private $redirects;
private $maxRedirects = 20;
/**
* Constructor.
*
* @param IOInterface $io The IO instance
* @param Config $config The config
* @param array $options The options
* @param bool $disableTls
*/
public function __construct(IOInterface $io, Config $config = null, array $options = array(), $disableTls = false)
{
$this->io = $io;
// Setup TLS options
// The cafile option can be set via config.json
if ($disableTls === false) {
$this->options = $this->getTlsDefaults($options);
} else {
$this->disableTls = true;
}
// handle the other externally set options normally.
$this->options = array_replace_recursive($this->options, $options);
$this->config = $config;
}
/**
* Copy the remote file in local.
*
* @param string $originUrl The origin URL
* @param string $fileUrl The file URL
* @param string $fileName the local filename
* @param bool $progress Display the progression
* @param array $options Additional context options
*
* @return bool true
*/
public function copy($originUrl, $fileUrl, $fileName, $progress = true, $options = array())
{
return $this->get($originUrl, $fileUrl, $options, $fileName, $progress);
}
/**
* Get the content.
*
* @param string $originUrl The origin URL
* @param string $fileUrl The file URL
* @param bool $progress Display the progression
* @param array $options Additional context options
*
* @return bool|string The content
*/
public function getContents($originUrl, $fileUrl, $progress = true, $options = array())
{
return $this->get($originUrl, $fileUrl, $options, null, $progress);
}
/**
* Retrieve the options set in the constructor
*
* @return array Options
*/
public function getOptions()
{
return $this->options;
}
/**
* Merges new options
*
* @return array $options
*/
public function setOptions(array $options)
{
$this->options = array_replace_recursive($this->options, $options);
}
public function isTlsDisabled()
{
return $this->disableTls === true;
}
/**
* Returns the headers of the last request
*
* @return array
*/
public function getLastHeaders()
{
return $this->lastHeaders;
}
/**
* @param array $headers array of returned headers like from getLastHeaders()
* @param string $name header name (case insensitive)
* @return string|null
*/
public function findHeaderValue(array $headers, $name)
{
$value = null;
foreach ($headers as $header) {
if (preg_match('{^'.$name.':\s*(.+?)\s*$}i', $header, $match)) {
$value = $match[1];
} elseif (preg_match('{^HTTP/}i', $header)) {
// In case of redirects, http_response_headers contains the headers of all responses
// so we reset the flag when a new response is being parsed as we are only interested in the last response
$value = null;
}
}
return $value;
}
/**
* @param array $headers array of returned headers like from getLastHeaders()
* @return int|null
*/
public function findStatusCode(array $headers)
{
$value = null;
foreach ($headers as $header) {
if (preg_match('{^HTTP/\S+ (\d+)}i', $header, $match)) {
// In case of redirects, http_response_headers contains the headers of all responses
// so we can not return directly and need to keep iterating
$value = (int) $match[1];
}
}
return $value;
}
/**
* Get file content or copy action.
*
* @param string $originUrl The origin URL
* @param string $fileUrl The file URL
* @param array $additionalOptions context options
* @param string $fileName the local filename
* @param bool $progress Display the progression
*
* @throws TransportException|\Exception
* @throws TransportException When the file could not be downloaded
*
* @return bool|string
*/
protected function get($originUrl, $fileUrl, $additionalOptions = array(), $fileName = null, $progress = true)
{
if (strpos($originUrl, '.github.com') === (strlen($originUrl) - 11)) {
$originUrl = 'github.com';
}
$this->scheme = parse_url($fileUrl, PHP_URL_SCHEME);
$this->bytesMax = 0;
$this->originUrl = $originUrl;
$this->fileUrl = $fileUrl;
$this->fileName = $fileName;
$this->progress = $progress;
$this->lastProgress = null;
$this->retryAuthFailure = true;
$this->lastHeaders = array();
$this->redirects = 1; // The first request counts.
// capture username/password from URL if there is one
if (preg_match('{^https?://(.+):(.+)@([^/]+)}i', $fileUrl, $match)) {
$this->io->setAuthentication($originUrl, urldecode($match[1]), urldecode($match[2]));
}
$tempAdditionalOptions = $additionalOptions;
if (isset($tempAdditionalOptions['retry-auth-failure'])) {
$this->retryAuthFailure = (bool) $tempAdditionalOptions['retry-auth-failure'];
unset($tempAdditionalOptions['retry-auth-failure']);
}
$isRedirect = false;
if (isset($tempAdditionalOptions['redirects'])) {
$this->redirects = $tempAdditionalOptions['redirects'];
$isRedirect = true;
unset($tempAdditionalOptions['redirects']);
}
$options = $this->getOptionsForUrl($originUrl, $tempAdditionalOptions);
unset($tempAdditionalOptions);
$userlandFollow = isset($options['http']['follow_location']) & & !$options['http']['follow_location'];
$origFileUrl = $fileUrl;
if (isset($options['github-token'])) {
$fileUrl .= (false === strpos($fileUrl, '?') ? '?' : '& ') . 'access_token='.$options['github-token'];
unset($options['github-token']);
}
if (isset($options['gitlab-token'])) {
$fileUrl .= (false === strpos($fileUrl, '?') ? '?' : '& ') . 'access_token='.$options['gitlab-token'];
unset($options['gitlab-token']);
}
if (isset($options['http'])) {
$options['http']['ignore_errors'] = true;
}
if ($this->degradedMode & & substr($fileUrl, 0, 21) === 'http://packagist.org/') {
// access packagist using the resolved IPv4 instead of the hostname to force IPv4 protocol
$fileUrl = 'http://' . gethostbyname('packagist.org') . substr($fileUrl, 20);
}
$ctx = StreamContextFactory::getContext($fileUrl, $options, array('notification' => array($this, 'callbackGet')));
$actualContextOptions = stream_context_get_options($ctx);
$usingProxy = !empty($actualContextOptions['http']['proxy']) ? ' using proxy ' . $actualContextOptions['http']['proxy'] : '';
$this->io->writeError((substr($origFileUrl, 0, 4) === 'http' ? 'Downloading ' : 'Reading ') . $origFileUrl . $usingProxy, true, IOInterface::DEBUG);
unset($origFileUrl, $actualContextOptions);
if ($this->progress & & !$isRedirect) {
$this->io->writeError(" Downloading: < comment > Connecting...< / comment > ", false);
}
// Check for secure HTTP
if (
($this->scheme === 'http' || substr($fileUrl, 0, 5) === 'http:')
& & $this->config & & $this->config->get('secure-http')
) {
// Passthru unsecure Packagist calls to $hashed providers as file integrity is verified with sha256
if (substr($fileUrl, 0, 23) !== 'http://packagist.org/p/' || (false === strpos($fileUrl, '$') & & false === strpos($fileUrl, '%24'))) {
// other URLs must fail hard
throw new TransportException(sprintf(
'Your configuration does not allow connection to %s://%s. See https://getcomposer.org/doc/06-config.md#secure-http for details.',
$this->scheme,
$originUrl
));
}
}
$errorMessage = '';
$errorCode = 0;
$result = false;
set_error_handler(function ($code, $msg) use (& $errorMessage) {
if ($errorMessage) {
$errorMessage .= "\n";
}
$errorMessage .= preg_replace('{^file_get_contents\(.*?\): }', '', $msg);
});
try {
$result = file_get_contents($fileUrl, false, $ctx);
if (PHP_VERSION_ID < 50600 & & ! empty ( $ options [ ' ssl ' ] [ ' peer_fingerprint ' ] ) ) {
// Emulate fingerprint validation on PHP < 5.6
$params = stream_context_get_params($ctx);
$expectedPeerFingerprint = $options['ssl']['peer_fingerprint'];
$peerFingerprint = TlsHelper::getCertificateFingerprint($params['options']['ssl']['peer_certificate']);
// Constant time compare??!
if ($expectedPeerFingerprint !== $peerFingerprint) {
throw new TransportException('Peer fingerprint did not match');
}
}
} catch (\Exception $e) {
if ($e instanceof TransportException & & !empty($http_response_header[0])) {
$e->setHeaders($http_response_header);
$e->setStatusCode($this->findStatusCode($http_response_header));
}
if ($e instanceof TransportException & & $result !== false) {
$e->setResponse($result);
}
$result = false;
}
if ($errorMessage & & !ini_get('allow_url_fopen')) {
$errorMessage = 'allow_url_fopen must be enabled in php.ini ('.$errorMessage.')';
}
restore_error_handler();
if (isset($e) & & !$this->retry) {
if (!$this->degradedMode & & false !== strpos($e->getMessage(), 'Operation timed out')) {
$this->degradedMode = true;
$this->io->writeError(array(
'< error > '.$e->getMessage().'< / error > ',
'< error > Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info< / error > ',
));
return $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
}
throw $e;
}
$statusCode = null;
if (!empty($http_response_header[0])) {
$statusCode = $this->findStatusCode($http_response_header);
}
// handle 3xx redirects for php< 5.6 , 304 Not Modified is excluded
$hasFollowedRedirect = false;
if ($userlandFollow & & $statusCode >= 300 & & $statusCode < = 399 & & $statusCode !== 304 & & $this->redirects < $this->maxRedirects) {
$hasFollowedRedirect = true;
$result = $this->handleRedirect($http_response_header, $additionalOptions, $result);
}
// fail 4xx and 5xx responses and capture the response
if ($statusCode & & $statusCode >= 400 & & $statusCode < = 599) {
if (!$this->retry) {
if ($this->progress & & !$this->retry & & !$isRedirect) {
$this->io->overwriteError(" Downloading: < error > Failed< / error > ");
}
$e = new TransportException('The "'.$this->fileUrl.'" file could not be downloaded ('.$http_response_header[0].')', $statusCode);
$e->setHeaders($http_response_header);
$e->setResponse($result);
$e->setStatusCode($statusCode);
throw $e;
}
$result = false;
}
if ($this->progress & & !$this->retry & & !$isRedirect) {
$this->io->overwriteError(" Downloading: ".($result === false ? '< error > Failed< / error > ' : '< comment > 100%< / comment > '));
}
// decode gzip
if ($result & & extension_loaded('zlib') & & substr($fileUrl, 0, 4) === 'http' & & !$hasFollowedRedirect) {
$decode = 'gzip' === strtolower($this->findHeaderValue($http_response_header, 'content-encoding'));
if ($decode) {
try {
if (PHP_VERSION_ID >= 50400) {
$result = zlib_decode($result);
} else {
// work around issue with gzuncompress & co that do not work with all gzip checksums
$result = file_get_contents('compress.zlib://data:application/octet-stream;base64,'.base64_encode($result));
}
if (!$result) {
throw new TransportException('Failed to decode zlib stream');
}
} catch (\Exception $e) {
if ($this->degradedMode) {
throw $e;
}
$this->degradedMode = true;
$this->io->writeError(array(
'< error > Failed to decode response: '.$e->getMessage().'< / error > ',
'< error > Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info< / error > ',
));
return $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
}
}
}
// handle copy command if download was successful
if (false !== $result & & null !== $fileName & & !$isRedirect) {
if ('' === $result) {
throw new TransportException('"'.$this->fileUrl.'" appears broken, and returned an empty 200 response');
}
$errorMessage = '';
set_error_handler(function ($code, $msg) use (& $errorMessage) {
if ($errorMessage) {
$errorMessage .= "\n";
}
$errorMessage .= preg_replace('{^file_put_contents\(.*?\): }', '', $msg);
});
$result = (bool) file_put_contents($fileName, $result);
restore_error_handler();
if (false === $result) {
throw new TransportException('The "'.$this->fileUrl.'" file could not be written to '.$fileName.': '.$errorMessage);
}
}
// Handle SSL cert match issues
if (false === $result & & false !== strpos($errorMessage, 'Peer certificate') & & PHP_VERSION_ID < 50600 ) {
// Certificate name error, PHP doesn't support subjectAltName on PHP < 5.6
// The procedure to handle sAN for older PHP's is:
//
// 1. Open socket to remote server and fetch certificate (disabling peer
// validation because PHP errors without giving up the certificate.)
//
// 2. Verifying the domain in the URL against the names in the sAN field.
// If there is a match record the authority [host/port], certificate
// common name, and certificate fingerprint.
//
// 3. Retry the original request but changing the CN_match parameter to
// the common name extracted from the certificate in step 2.
//
// 4. To prevent any attempt at being hoodwinked by switching the
// certificate between steps 2 and 3 the fingerprint of the certificate
// presented in step 3 is compared against the one recorded in step 2.
if (TlsHelper::isOpensslParseSafe()) {
$certDetails = $this->getCertificateCnAndFp($this->fileUrl, $options);
if ($certDetails) {
$this->peerCertificateMap[$this->getUrlAuthority($this->fileUrl)] = $certDetails;
$this->retry = true;
}
} else {
$this->io->writeError(sprintf(
'< error > Your version of PHP, %s, is affected by CVE-2013-6420 and cannot safely perform certificate validation, we strongly suggest you upgrade.< / error > ',
PHP_VERSION
));
}
}
if ($this->retry) {
$this->retry = false;
$result = $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
if ($this->storeAuth & & $this->config) {
$authHelper = new AuthHelper($this->io, $this->config);
$authHelper->storeAuth($this->originUrl, $this->storeAuth);
$this->storeAuth = false;
}
return $result;
}
if (false === $result) {
$e = new TransportException('The "'.$this->fileUrl.'" file could not be downloaded: '.$errorMessage, $errorCode);
if (!empty($http_response_header[0])) {
$e->setHeaders($http_response_header);
}
if (!$this->degradedMode & & false !== strpos($e->getMessage(), 'Operation timed out')) {
$this->degradedMode = true;
$this->io->writeError(array(
'< error > '.$e->getMessage().'< / error > ',
'< error > Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info< / error > ',
));
return $this->get($this->originUrl, $this->fileUrl, $additionalOptions, $this->fileName, $this->progress);
}
throw $e;
}
if (!empty($http_response_header[0])) {
$this->lastHeaders = $http_response_header;
}
return $result;
}
/**
* Get notification action.
*
* @param int $notificationCode The notification code
* @param int $severity The severity level
* @param string $message The message
* @param int $messageCode The message code
* @param int $bytesTransferred The loaded size
* @param int $bytesMax The total size
* @throws TransportException
*/
protected function callbackGet($notificationCode, $severity, $message, $messageCode, $bytesTransferred, $bytesMax)
{
switch ($notificationCode) {
case STREAM_NOTIFY_FAILURE:
if (400 === $messageCode) {
// This might happen if your host is secured by ssl client certificate authentication
// but you do not send an appropriate certificate
throw new TransportException("The '" . $this->fileUrl . "' URL could not be accessed: " . $message, $messageCode);
}
// intentional fallthrough to the next case as the notificationCode
// isn't always consistent and we should inspect the messageCode for 401s
case STREAM_NOTIFY_AUTH_REQUIRED:
if (401 === $messageCode) {
// Bail if the caller is going to handle authentication failures itself.
if (!$this->retryAuthFailure) {
break;
}
$this->promptAuthAndRetry($messageCode);
}
break;
case STREAM_NOTIFY_AUTH_RESULT:
if (403 === $messageCode) {
// Bail if the caller is going to handle authentication failures itself.
if (!$this->retryAuthFailure) {
break;
}
$this->promptAuthAndRetry($messageCode, $message);
}
break;
case STREAM_NOTIFY_FILE_SIZE_IS:
if ($this->bytesMax < $bytesMax) {
$this->bytesMax = $bytesMax;
}
break;
case STREAM_NOTIFY_PROGRESS:
if ($this->bytesMax > 0 & & $this->progress) {
$progression = round($bytesTransferred / $this->bytesMax * 100);
if ((0 === $progression % 5) & & 100 !== $progression & & $progression !== $this->lastProgress) {
$this->lastProgress = $progression;
$this->io->overwriteError(" Downloading: < comment > $progression%< / comment > ", false);
}
}
break;
default:
break;
}
}
protected function promptAuthAndRetry($httpStatus, $reason = null)
{
if ($this->config & & in_array($this->originUrl, $this->config->get('github-domains'), true)) {
$message = "\n".'Could not fetch '.$this->fileUrl.', please create a GitHub OAuth token '.($httpStatus === 404 ? 'to access private repos' : 'to go over the API rate limit');
$gitHubUtil = new GitHub($this->io, $this->config, null);
if (!$gitHubUtil->authorizeOAuth($this->originUrl)
& & (!$this->io->isInteractive() || !$gitHubUtil->authorizeOAuthInteractively($this->originUrl, $message))
) {
throw new TransportException('Could not authenticate against '.$this->originUrl, 401);
}
} elseif ($this->config & & in_array($this->originUrl, $this->config->get('gitlab-domains'), true)) {
$message = "\n".'Could not fetch '.$this->fileUrl.', enter your ' . $this->originUrl . ' credentials ' .($httpStatus === 401 ? 'to access private repos' : 'to go over the API rate limit');
$gitLabUtil = new GitLab($this->io, $this->config, null);
if (!$gitLabUtil->authorizeOAuth($this->originUrl)
& & (!$this->io->isInteractive() || !$gitLabUtil->authorizeOAuthInteractively($this->scheme, $this->originUrl, $message))
) {
throw new TransportException('Could not authenticate against '.$this->originUrl, 401);
}
} else {
// 404s are only handled for github
if ($httpStatus === 404) {
return;
}
// fail if the console is not interactive
if (!$this->io->isInteractive()) {
if ($httpStatus === 401) {
$message = "The '" . $this->fileUrl . "' URL required authentication.\nYou must be using the interactive console to authenticate";
}
if ($httpStatus === 403) {
$message = "The '" . $this->fileUrl . "' URL could not be accessed: " . $reason;
}
throw new TransportException($message, $httpStatus);
}
// fail if we already have auth
if ($this->io->hasAuthentication($this->originUrl)) {
throw new TransportException("Invalid credentials for '" . $this->fileUrl . "', aborting.", $httpStatus);
}
$this->io->overwriteError(' Authentication required (< info > '.parse_url($this->fileUrl, PHP_URL_HOST).'< / info > ):');
$username = $this->io->ask(' Username: ');
$password = $this->io->askAndHideAnswer(' Password: ');
$this->io->setAuthentication($this->originUrl, $username, $password);
$this->storeAuth = $this->config->get('store-auths');
}
$this->retry = true;
throw new TransportException('RETRY');
}
protected function getOptionsForUrl($originUrl, $additionalOptions)
{
$tlsOptions = array();
// Setup remaining TLS options - the matching may need monitoring, esp. www vs none in CN
if ($this->disableTls === false & & PHP_VERSION_ID < 50600 & & ! stream_is_local ( $ this- > fileUrl)) {
$host = parse_url($this->fileUrl, PHP_URL_HOST);
if (PHP_VERSION_ID >= 50304) {
// Must manually follow when setting CN_match because this causes all
// redirects to be validated against the same CN_match value.
$userlandFollow = true;
} else {
// PHP < 5.3.4 does not support follow_location , for those people
// do some really nasty hard coded transformations. These will
// still breakdown if the site redirects to a domain we don't
// expect.
if ($host === 'github.com' || $host === 'api.github.com') {
$host = '*.github.com';
}
}
$tlsOptions['ssl']['CN_match'] = $host;
$tlsOptions['ssl']['SNI_server_name'] = $host;
$urlAuthority = $this->getUrlAuthority($this->fileUrl);
if (isset($this->peerCertificateMap[$urlAuthority])) {
// Handle subjectAltName on lesser PHP's.
$certMap = $this->peerCertificateMap[$urlAuthority];
$this->io->writeError(sprintf(
'Using < info > %s< / info > as CN for subjectAltName enabled host < info > %s< / info > ',
$certMap['cn'],
$urlAuthority
), true, IOInterface::DEBUG);
$tlsOptions['ssl']['CN_match'] = $certMap['cn'];
$tlsOptions['ssl']['peer_fingerprint'] = $certMap['fp'];
}
}
$headers = array();
if (extension_loaded('zlib')) {
$headers[] = 'Accept-Encoding: gzip';
}
$options = array_replace_recursive($this->options, $tlsOptions, $additionalOptions);
if (!$this->degradedMode) {
// degraded mode disables HTTP/1.1 which causes issues with some bad
// proxies/software due to the use of chunked encoding
$options['http']['protocol_version'] = 1.1;
$headers[] = 'Connection: close';
}
if (isset($userlandFollow)) {
$options['http']['follow_location'] = 0;
}
if ($this->io->hasAuthentication($originUrl)) {
$auth = $this->io->getAuthentication($originUrl);
if ('github.com' === $originUrl & & 'x-oauth-basic' === $auth['password']) {
$options['github-token'] = $auth['username'];
} elseif ($this->config & & in_array($originUrl, $this->config->get('gitlab-domains'), true)) {
if ($auth['password'] === 'oauth2') {
$headers[] = 'Authorization: Bearer '.$auth['username'];
}
} else {
$authStr = base64_encode($auth['username'] . ':' . $auth['password']);
$headers[] = 'Authorization: Basic '.$authStr;
}
}
if (isset($options['http']['header']) & & !is_array($options['http']['header'])) {
$options['http']['header'] = explode("\r\n", trim($options['http']['header'], "\r\n"));
}
foreach ($headers as $header) {
$options['http']['header'][] = $header;
}
return $options;
}
private function handleRedirect(array $http_response_header, array $additionalOptions, $result)
{
if ($locationHeader = $this->findHeaderValue($http_response_header, 'location')) {
if (parse_url($locationHeader, PHP_URL_SCHEME)) {
// Absolute URL; e.g. https://example.com/composer
$targetUrl = $locationHeader;
} elseif (parse_url($locationHeader, PHP_URL_HOST)) {
// Scheme relative; e.g. //example.com/foo
$targetUrl = $this->scheme.':'.$locationHeader;
} elseif ('/' === $locationHeader[0]) {
// Absolute path; e.g. /foo
$urlHost = parse_url($this->fileUrl, PHP_URL_HOST);
// Replace path using hostname as an anchor.
$targetUrl = preg_replace('{^(.+(?://|@)'.preg_quote($urlHost).'(?::\d+)?)(?:[/\?].*)?$}', '\1'.$locationHeader, $this->fileUrl);
} else {
// Relative path; e.g. foo
// This actually differs from PHP which seems to add duplicate slashes.
$targetUrl = preg_replace('{^(.+/)[^/?]*(?:\?.*)?$}', '\1'.$locationHeader, $this->fileUrl);
}
}
if (!empty($targetUrl)) {
$this->redirects++;
$this->io->writeError(sprintf('Following redirect (%u) %s', $this->redirects, $targetUrl), true, IOInterface::DEBUG);
$additionalOptions['redirects'] = $this->redirects;
return $this->get($this->originUrl, $targetUrl, $additionalOptions, $this->fileName, $this->progress);
}
if (!$this->retry) {
$e = new TransportException('The "'.$this->fileUrl.'" file could not be downloaded, got redirect without Location ('.$http_response_header[0].')');
$e->setHeaders($http_response_header);
$e->setResponse($result);
throw $e;
}
return false;
}
/**
* @param array $options
*
* @return array
*/
private function getTlsDefaults(array $options)
{
$ciphers = implode(':', array(
'ECDHE-RSA-AES128-GCM-SHA256',
'ECDHE-ECDSA-AES128-GCM-SHA256',
'ECDHE-RSA-AES256-GCM-SHA384',
'ECDHE-ECDSA-AES256-GCM-SHA384',
'DHE-RSA-AES128-GCM-SHA256',
'DHE-DSS-AES128-GCM-SHA256',
'kEDH+AESGCM',
'ECDHE-RSA-AES128-SHA256',
'ECDHE-ECDSA-AES128-SHA256',
'ECDHE-RSA-AES128-SHA',
'ECDHE-ECDSA-AES128-SHA',
'ECDHE-RSA-AES256-SHA384',
'ECDHE-ECDSA-AES256-SHA384',
'ECDHE-RSA-AES256-SHA',
'ECDHE-ECDSA-AES256-SHA',
'DHE-RSA-AES128-SHA256',
'DHE-RSA-AES128-SHA',
'DHE-DSS-AES128-SHA256',
'DHE-RSA-AES256-SHA256',
'DHE-DSS-AES256-SHA',
'DHE-RSA-AES256-SHA',
'AES128-GCM-SHA256',
'AES256-GCM-SHA384',
'ECDHE-RSA-RC4-SHA',
'ECDHE-ECDSA-RC4-SHA',
'AES128',
'AES256',
'RC4-SHA',
'HIGH',
'!aNULL',
'!eNULL',
'!EXPORT',
'!DES',
'!3DES',
'!MD5',
'!PSK',
));
/**
* CN_match and SNI_server_name are only known once a URL is passed.
* They will be set in the getOptionsForUrl() method which receives a URL.
*
* cafile or capath can be overridden by passing in those options to constructor.
*/
$defaults = array(
'ssl' => array(
'ciphers' => $ciphers,
'verify_peer' => true,
'verify_depth' => 7,
'SNI_enabled' => true,
'capture_peer_cert' => true,
),
);
if (isset($options['ssl'])) {
$defaults['ssl'] = array_replace_recursive($defaults['ssl'], $options['ssl']);
}
/**
* Attempt to find a local cafile or throw an exception if none pre-set
* The user may go download one if this occurs.
*/
if (!isset($defaults['ssl']['cafile']) & & !isset($defaults['ssl']['capath'])) {
$result = $this->getSystemCaRootBundlePath();
if (preg_match('{^phar://}', $result)) {
$hash = hash_file('sha256', $result);
$targetPath = rtrim(sys_get_temp_dir(), '\\/') . '/composer-cacert-' . $hash . '.pem';
if (!file_exists($targetPath) || $hash !== hash_file('sha256', $targetPath)) {
$this->streamCopy($result, $targetPath);
chmod($targetPath, 0666);
}
$defaults['ssl']['cafile'] = $targetPath;
} elseif (is_dir($result)) {
$defaults['ssl']['capath'] = $result;
} else {
$defaults['ssl']['cafile'] = $result;
}
}
if (isset($defaults['ssl']['cafile']) & & (!is_readable($defaults['ssl']['cafile']) || !$this->validateCaFile($defaults['ssl']['cafile']))) {
throw new TransportException('The configured cafile was not valid or could not be read.');
}
if (isset($defaults['ssl']['capath']) & & (!is_dir($defaults['ssl']['capath']) || !is_readable($defaults['ssl']['capath']))) {
throw new TransportException('The configured capath was not valid or could not be read.');
}
/**
* Disable TLS compression to prevent CRIME attacks where supported.
*/
if (PHP_VERSION_ID >= 50413) {
$defaults['ssl']['disable_compression'] = true;
}
return $defaults;
}
/**
* This method was adapted from Sslurp.
* https://github.com/EvanDotPro/Sslurp
*
* (c) Evan Coury < me @ evancoury . com >
*
* For the full copyright and license information, please see below:
*
* Copyright (c) 2013, Evan Coury
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @return string
*/
private function getSystemCaRootBundlePath()
{
static $caPath = null;
if ($caPath !== null) {
return $caPath;
}
// If SSL_CERT_FILE env variable points to a valid certificate/bundle, use that.
// This mimics how OpenSSL uses the SSL_CERT_FILE env variable.
$envCertFile = getenv('SSL_CERT_FILE');
if ($envCertFile & & is_readable($envCertFile) & & $this->validateCaFile($envCertFile)) {
return $caPath = $envCertFile;
}
// If SSL_CERT_DIR env variable points to a valid certificate/bundle, use that.
// This mimics how OpenSSL uses the SSL_CERT_FILE env variable.
$envCertDir = getenv('SSL_CERT_DIR');
if ($envCertDir & & is_dir($envCertDir) & & is_readable($envCertDir)) {
return $caPath = $envCertDir;
}
$configured = ini_get('openssl.cafile');
if ($configured & & strlen($configured) > 0 & & is_readable($configured) & & $this->validateCaFile($configured)) {
return $caPath = $configured;
}
$configured = ini_get('openssl.capath');
if ($configured & & is_dir($configured) & & is_readable($configured)) {
return $caPath = $configured;
}
$caBundlePaths = array(
'/etc/pki/tls/certs/ca-bundle.crt', // Fedora, RHEL, CentOS (ca-certificates package)
'/etc/ssl/certs/ca-certificates.crt', // Debian, Ubuntu, Gentoo, Arch Linux (ca-certificates package)
'/etc/ssl/ca-bundle.pem', // SUSE, openSUSE (ca-certificates package)
'/usr/local/share/certs/ca-root-nss.crt', // FreeBSD (ca_root_nss_package)
'/usr/ssl/certs/ca-bundle.crt', // Cygwin
'/opt/local/share/curl/curl-ca-bundle.crt', // OS X macports, curl-ca-bundle package
'/usr/local/share/curl/curl-ca-bundle.crt', // Default cURL CA bunde path (without --with-ca-bundle option)
'/usr/share/ssl/certs/ca-bundle.crt', // Really old RedHat?
'/etc/ssl/cert.pem', // OpenBSD
'/usr/local/etc/ssl/cert.pem', // FreeBSD 10.x
);
foreach ($caBundlePaths as $caBundle) {
if (Silencer::call('is_readable', $caBundle) & & $this->validateCaFile($caBundle)) {
return $caPath = $caBundle;
}
}
foreach ($caBundlePaths as $caBundle) {
$caBundle = dirname($caBundle);
if (is_dir($caBundle) & & glob($caBundle.'/*')) {
return $caPath = $caBundle;
}
}
return $caPath = __DIR__.'/../../../res/cacert.pem'; // Bundled with Composer, last resort
}
/**
* @param string $filename
*
* @return bool
*/
private function validateCaFile($filename)
{
static $files = array();
if (isset($files[$filename])) {
return $files[$filename];
}
$this->io->writeError('Checking CA file '.realpath($filename), true, IOInterface::DEBUG);
$contents = file_get_contents($filename);
// assume the CA is valid if php is vulnerable to
// https://www.sektioneins.de/advisories/advisory-012013-php-openssl_x509_parse-memory-corruption-vulnerability.html
if (!TlsHelper::isOpensslParseSafe()) {
$this->io->writeError(sprintf(
'< error > Your version of PHP, %s, is affected by CVE-2013-6420 and cannot safely perform certificate validation, we strongly suggest you upgrade.< / error > ',
PHP_VERSION
));
return $files[$filename] = !empty($contents);
}
return $files[$filename] = (bool) openssl_x509_parse($contents);
}
/**
* Uses stream_copy_to_stream instead of copy to work around https://bugs.php.net/bug.php?id=64634
*
* @param string $source
* @param string $target
*/
private function streamCopy($source, $target)
{
$source = fopen($source, 'r');
$target = fopen($target, 'w+');
stream_copy_to_stream($source, $target);
fclose($source);
fclose($target);
unset($source, $target);
}
/**
* Fetch certificate common name and fingerprint for validation of SAN.
*
* @todo Remove when PHP 5.6 is minimum supported version.
*/
private function getCertificateCnAndFp($url, $options)
{
if (PHP_VERSION_ID >= 50600) {
throw new \BadMethodCallException(sprintf(
'%s must not be used on PHP >= 5.6',
__METHOD__
));
}
$context = StreamContextFactory::getContext($url, $options, array('options' => array(
'ssl' => array(
'capture_peer_cert' => true,
'verify_peer' => false, // Yes this is fucking insane! But PHP is lame.
), ),
));
// Ideally this would just use stream_socket_client() to avoid sending a
// HTTP request but that does not capture the certificate.
if (false === $handle = @fopen($url, 'rb', false, $context)) {
return;
}
// Close non authenticated connection without reading any content.
fclose($handle);
$handle = null;
$params = stream_context_get_params($context);
if (!empty($params['options']['ssl']['peer_certificate'])) {
$peerCertificate = $params['options']['ssl']['peer_certificate'];
if (TlsHelper::checkCertificateHost($peerCertificate, parse_url($url, PHP_URL_HOST), $commonName)) {
return array(
'cn' => $commonName,
'fp' => TlsHelper::getCertificateFingerprint($peerCertificate),
);
}
}
}
private function getUrlAuthority($url)
{
$defaultPorts = array(
'ftp' => 21,
'http' => 80,
'https' => 443,
'ssh2.sftp' => 22,
'ssh2.scp' => 22,
);
$scheme = parse_url($url, PHP_URL_SCHEME);
if (!isset($defaultPorts[$scheme])) {
throw new \InvalidArgumentException(sprintf(
'Could not get default port for unknown scheme: %s',
$scheme
));
}
$defaultPort = $defaultPorts[$scheme];
$port = parse_url($url, PHP_URL_PORT) ?: $defaultPort;
return parse_url($url, PHP_URL_HOST).':'.$port;
}
}
