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installer
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<?php
/*
* This file is part of Composer.
*
* (c) Nils Adermann <[email protected]>
* Jordi Boggiano <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
process(is_array($argv) ? $argv : array());
/**
* processes the installer
*/
function process($argv)
{
// Determine ANSI output from --ansi and --no-ansi flags
setUseAnsi($argv);
if (in_array('--help', $argv)) {
displayHelp();
exit(0);
}
$check = in_array('--check', $argv);
$help = in_array('--help', $argv);
$force = in_array('--force', $argv);
$quiet = in_array('--quiet', $argv);
$channel = in_array('--snapshot', $argv) ? 'snapshot' : (in_array('--preview', $argv) ? 'preview' : 'stable');
$disableTls = in_array('--disable-tls', $argv);
$installDir = getOptValue('--install-dir', $argv, false);
$version = getOptValue('--version', $argv, false);
$filename = getOptValue('--filename', $argv, 'composer.phar');
$cafile = getOptValue('--cafile', $argv, false);
if (!checkParams($installDir, $version, $cafile)) {
exit(1);
}
$ok = checkPlatform($warnings, $quiet, $disableTls);
if ($check) {
// Only show warnings if we haven't output any errors
if ($ok) {
showWarnings($warnings);
showSecurityWarning($disableTls);
}
exit($ok ? 0 : 1);
}
if ($ok || $force) {
installComposer($version, $installDir, $filename, $quiet, $disableTls, $cafile, $channel);
showWarnings($warnings);
showSecurityWarning($disableTls);
exit(0);
}
exit(1);
}
/**
* displays the help
*/
function displayHelp()
{
echo <<<EOF
Composer Installer
------------------
Options
--help this help
--check for checking environment only
--force forces the installation
--ansi force ANSI color output
--no-ansi disable ANSI color output
--quiet do not output unimportant messages
--install-dir="..." accepts a target installation directory
--preview install the latest version from the preview (alpha/beta/rc) channel instead of stable
--snapshot install the latest version from the snapshot (dev builds) channel instead of stable
--version="..." accepts a specific version to install instead of the latest
--filename="..." accepts a target filename (default: composer.phar)
--disable-tls disable SSL/TLS security for file downloads
--cafile="..." accepts a path to a Certificate Authority (CA) certificate file for SSL/TLS verification
EOF;
}
/**
* Sets the USE_ANSI define for colorizing output
*
* @param array $argv Command-line arguments
*/
function setUseAnsi($argv)
{
// --no-ansi wins over --ansi
if (in_array('--no-ansi', $argv)) {
define('USE_ANSI', false);
} elseif (in_array('--ansi', $argv)) {
define('USE_ANSI', true);
} else {
// On Windows, default to no ANSI, except in ANSICON and ConEmu.
// Everywhere else, default to ANSI if stdout is a terminal.
define(
'USE_ANSI',
(DIRECTORY_SEPARATOR == '\\')
? (false !== getenv('ANSICON') || 'ON' === getenv('ConEmuANSI'))
: (function_exists('posix_isatty') && posix_isatty(1))
);
}
}
/**
* Returns the value of a command-line option
*
* @param string $opt The command-line option to check
* @param array $argv Command-line arguments
* @param mixed $default Default value to be returned
*
* @return mixed The command-line value or the default
*/
function getOptValue($opt, $argv, $default)
{
$optLength = strlen($opt);
foreach ($argv as $key => $value) {
$next = $key + 1;
if (0 === strpos($value, $opt)) {
if ($optLength === strlen($value) && isset($argv[$next])) {
return trim($argv[$next]);
} else {
return trim(substr($value, $optLength + 1));
}
}
}
return $default;
}
/**
* Checks that user-supplied params are valid
*
* @param mixed $installDir The required istallation directory
* @param mixed $version The required composer version to install
* @param mixed $cafile Certificate Authority file
*
* @return bool True if the supplied params are okay
*/
function checkParams($installDir, $version, $cafile)
{
$result = true;
if (false !== $installDir && !is_dir($installDir)) {
out("The defined install dir ({$installDir}) does not exist.", 'info');
$result = false;
}
if (false !== $version && 1 !== preg_match('/^\d+\.\d+\.\d+(\-(alpha|beta)\d+)*$/', $version)) {
out("The defined install version ({$version}) does not match release pattern.", 'info');
$result = false;
}
if (false !== $cafile && (!file_exists($cafile) || !is_readable($cafile))) {
out("The defined Certificate Authority (CA) cert file ({$cafile}) does not exist or is not readable.", 'info');
$result = false;
}
return $result;
}
/**
* Checks the platform for possible issues running Composer
*
* Errors are written to the output, warnings are saved for later display.
*
* @param array $warnings Populated by method, to be shown later
* @param bool $quiet Quiet mode
* @param bool $disableTls Bypass tls
*
* @return bool True if there are no errors
*/
function checkPlatform(&$warnings, $quiet, $disableTls)
{
getPlatformIssues($errors, $warnings);
// Make openssl warning an error if tls has not been specifically disabled
if (isset($warnings['openssl']) && !$disableTls) {
$errors['openssl'] = $warnings['openssl'];
unset($warnings['openssl']);
}
if (!empty($errors)) {
out('Some settings on your machine make Composer unable to work properly.', 'error');
out('Make sure that you fix the issues listed below and run this script again:', 'error');
outputIssues($errors);
return false;
}
if (empty($warnings) && !$quiet) {
out('All settings correct for using Composer', 'success');
}
return true;
}
/**
* Checks platform configuration for common incompatibility issues
*
* @param array $errors Populated by method
* @param array $warnings Populated by method
*
* @return bool If any errors or warnings have been found
*/
function getPlatformIssues(&$errors, &$warnings)
{
$errors = array();
$warnings = array();
if ($iniPath = php_ini_loaded_file()) {
$iniMessage = PHP_EOL.'The php.ini used by your command-line PHP is: ' . $iniPath;
} else {
$iniMessage = PHP_EOL.'A php.ini file does not exist. You will have to create one.';
}
$iniMessage .= PHP_EOL.'If you can not modify the ini file, you can also run `php -d option=value` to modify ini values on the fly. You can use -d multiple times.';
if (ini_get('detect_unicode')) {
$errors['unicode'] = array(
'The detect_unicode setting must be disabled.',
'Add the following to the end of your `php.ini`:',
' detect_unicode = Off',
$iniMessage
);
}
if (extension_loaded('suhosin')) {
$suhosin = ini_get('suhosin.executor.include.whitelist');
$suhosinBlacklist = ini_get('suhosin.executor.include.blacklist');
if (false === stripos($suhosin, 'phar') && (!$suhosinBlacklist || false !== stripos($suhosinBlacklist, 'phar'))) {
$errors['suhosin'] = array(
'The suhosin.executor.include.whitelist setting is incorrect.',
'Add the following to the end of your `php.ini` or suhosin.ini (Example path [for Debian]: /etc/php5/cli/conf.d/suhosin.ini):',
' suhosin.executor.include.whitelist = phar '.$suhosin,
$iniMessage
);
}
}
if (!function_exists('json_decode')) {
$errors['json'] = array(
'The json extension is missing.',
'Install it or recompile php without --disable-json'
);
}
if (!extension_loaded('Phar')) {
$errors['phar'] = array(
'The phar extension is missing.',
'Install it or recompile php without --disable-phar'
);
}
if (!extension_loaded('filter')) {
$errors['filter'] = array(
'The filter extension is missing.',
'Install it or recompile php without --disable-filter'
);
}
if (!extension_loaded('hash')) {
$errors['hash'] = array(
'The hash extension is missing.',
'Install it or recompile php without --disable-hash'
);
}
if (!extension_loaded('iconv') && !extension_loaded('mbstring')) {
$errors['iconv_mbstring'] = array(
'The iconv OR mbstring extension is required and both are missing.',
'Install either of them or recompile php without --disable-iconv'
);
}
if (!ini_get('allow_url_fopen')) {
$errors['allow_url_fopen'] = array(
'The allow_url_fopen setting is incorrect.',
'Add the following to the end of your `php.ini`:',
' allow_url_fopen = On',
$iniMessage
);
}
if (extension_loaded('ionCube Loader') && ioncube_loader_iversion() < 40009) {
$ioncube = ioncube_loader_version();
$errors['ioncube'] = array(
'Your ionCube Loader extension ('.$ioncube.') is incompatible with Phar files.',
'Upgrade to ionCube 4.0.9 or higher or remove this line (path may be different) from your `php.ini` to disable it:',
' zend_extension = /usr/lib/php5/20090626+lfs/ioncube_loader_lin_5.3.so',
$iniMessage
);
}
if (version_compare(PHP_VERSION, '5.3.2', '<')) {
$errors['php'] = array(
'Your PHP ('.PHP_VERSION.') is too old, you must upgrade to PHP 5.3.2 or higher.'
);
}
if (version_compare(PHP_VERSION, '5.3.4', '<')) {
$warnings['php'] = array(
'Your PHP ('.PHP_VERSION.') is quite old, upgrading to PHP 5.3.4 or higher is recommended.',
'Composer works with 5.3.2+ for most people, but there might be edge case issues.'
);
}
if (!extension_loaded('openssl')) {
$warnings['openssl'] = array(
'The openssl extension is missing, which means that secure HTTPS transfers are impossible.',
'If possible you should enable it or recompile php with --with-openssl'
);
}
if (extension_loaded('openssl') && OPENSSL_VERSION_NUMBER < 0x1000100f) {
// Attempt to parse version number out, fallback to whole string value.
$opensslVersion = trim(strstr(OPENSSL_VERSION_TEXT, ' '));
$opensslVersion = substr($opensslVersion, 0, strpos($opensslVersion, ' '));
$opensslVersion = $opensslVersion ? $opensslVersion : OPENSSL_VERSION_TEXT;
$warnings['openssl_version'] = array(
'The OpenSSL library ('.$opensslVersion.') used by PHP does not support TLSv1.2 or TLSv1.1.',
'If possible you should upgrade OpenSSL to version 1.0.1 or above.'
);
}
if (!defined('HHVM_VERSION') && !extension_loaded('apcu') && ini_get('apc.enable_cli')) {
$warnings['apc_cli'] = array(
'The apc.enable_cli setting is incorrect.',
'Add the following to the end of your `php.ini`:',
' apc.enable_cli = Off',
$iniMessage
);
}
if (extension_loaded('xdebug')) {
$warnings['xdebug_loaded'] = array(
'The xdebug extension is loaded, this can slow down Composer a little.',
'Disabling it when using Composer is recommended.'
);
if (ini_get('xdebug.profiler_enabled')) {
$warnings['xdebug_profile'] = array(
'The xdebug.profiler_enabled setting is enabled, this can slow down Composer a lot.',
'Add the following to the end of your `php.ini` to disable it:',
' xdebug.profiler_enabled = 0',
$iniMessage
);
}
}
if (!extension_loaded('zlib')) {
$warnings['zlib'] = array(
'The zlib extension is not loaded, this can slow down Composer a lot.',
'If possible, install it or recompile php with --with-zlib',
$iniMessage
);
}
ob_start();
phpinfo(INFO_GENERAL);
$phpinfo = ob_get_clean();
if (preg_match('{Configure Command(?: *</td><td class="v">| *=> *)(.*?)(?:</td>|$)}m', $phpinfo, $match)) {
$configure = $match[1];
if (false !== strpos($configure, '--enable-sigchild')) {
$warnings['sigchild'] = array(
'PHP was compiled with --enable-sigchild which can cause issues on some platforms.',
'Recompile it without this flag if possible, see also:',
' https://bugs.php.net/bug.php?id=22999'
);
}
if (false !== strpos($configure, '--with-curlwrappers')) {
$warnings['curlwrappers'] = array(
'PHP was compiled with --with-curlwrappers which will cause issues with HTTP authentication and GitHub.',
'Recompile it without this flag if possible'
);
}
}
// Stringify the message arrays
foreach ($errors as $key => $value) {
$errors[$key] = PHP_EOL.implode(PHP_EOL, $value);
}
foreach ($warnings as $key => $value) {
$warnings[$key] = PHP_EOL.implode(PHP_EOL, $value);
}
return !empty($errors) || !empty($warnings);
}
/**
* Outputs an array of issues
*
* @param array $issues
*/
function outputIssues($issues)
{
foreach ($issues as $issue) {
out($issue, 'info');
}
out('');
}
/**
* Outputs any warnings found
*
* @param array $warnings
*/
function showWarnings($warnings)
{
if (!empty($warnings)) {
out('Some settings on your machine may cause stability issues with Composer.', 'error');
out('If you encounter issues, try to change the following:', 'error');
outputIssues($warnings);
}
}
/**
* Outputs an end of process warning if tls has been bypassed
*
* @param bool $disableTls Bypass tls
*/
function showSecurityWarning($disableTls)
{
if ($disableTls) {
out('You have instructed the Installer not to enforce SSL/TLS security on remote HTTPS requests.', 'info');
out('This will leave all downloads during installation vulnerable to Man-In-The-Middle (MITM) attacks', 'info');
}
}
/**
* installs composer to the current working directory
*/
function installComposer($version, $installDir, $filename, $quiet, $disableTls, $cafile, $channel)
{
$installPath = (is_dir($installDir) ? rtrim($installDir, '/').'/' : '') . $filename;
$installDir = realpath($installDir) ? realpath($installDir) : getcwd();
$file = $installDir.DIRECTORY_SEPARATOR.$filename;
if (is_readable($file)) {
@unlink($file);
}
$home = getHomeDir();
if (!is_dir($home)) {
@mkdir($home, 0777, true);
}
file_put_contents($home.'/keys.dev.pub', <<<DEVPUBKEY
-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----
DEVPUBKEY
);
file_put_contents($home.'/keys.tags.pub', <<<TAGSPUBKEY
-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----
TAGSPUBKEY
);
if (false === $disableTls && empty($cafile) && !HttpClient::getSystemCaRootBundlePath()) {
$errorHandler = new ErrorHandler();
set_error_handler(array($errorHandler, 'handleError'));
$target = $home . '/cacert.pem';
$write = file_put_contents($target, HttpClient::getPackagedCaFile(), LOCK_EX);
@chmod($target, 0644);
restore_error_handler();
if (!$write) {
throw new RuntimeException('Unable to write bundled cacert.pem to: '.$target);
}
$cafile = $target;
}
$httpClient = new HttpClient($disableTls, $cafile);
$uriScheme = false === $disableTls ? 'https' : 'http';
if (!$version) {
$versions = json_decode($httpClient->get($uriScheme . '://getcomposer.org/versions'), true);
foreach ($versions[$channel] as $candidate) {
if ($candidate['min-php'] <= PHP_VERSION_ID) {
$version = $candidate['version'];
$downloadUrl = $candidate['path'];
break;
}
}
if (!$version) {
out('None of the '.count($versions[$channel]).' '.$channel.' version(s) of Composer matches your PHP version ('.PHP_VERSION.' / ID: '.PHP_VERSION_ID.')', 'error');
exit(1);
}
} else {
$downloadUrl = "/download/{$version}/composer.phar";
}
$retries = 3;
while ($retries--) {
if (!$quiet) {
out("Downloading $version...", 'info');
}
$url = "{$uriScheme}://getcomposer.org{$downloadUrl}";
$errorHandler = new ErrorHandler();
set_error_handler(array($errorHandler, 'handleError'));
// download signature file
if (false === $disableTls) {
$signature = $httpClient->get($url.'.sig');
if (!$signature) {
out('Download failed: '.$errorHandler->message, 'error');
} else {
$signature = json_decode($signature, true);
$signature = base64_decode($signature['sha384']);
}
}
$fh = fopen($file, 'w');
if (!$fh) {
out('Could not create file '.$file.': '.$errorHandler->message, 'error');
}
if (!fwrite($fh, $httpClient->get($url))) {
out('Download failed: '.$errorHandler->message, 'error');
}
fclose($fh);
restore_error_handler();
if ($errorHandler->message) {
continue;
}
try {
// create a temp file ending in .phar since the Phar class only accepts that
if ('.phar' !== substr($file, -5)) {
copy($file, $file.'.tmp.phar');
$pharFile = $file.'.tmp.phar';
} else {
$pharFile = $file;
}
// verify signature
if (false === $disableTls) {
$pubkeyid = openssl_pkey_get_public('file://'.$home.'/' . (preg_match('{^[0-9a-f]{40}$}', $version) ? 'keys.dev.pub' : 'keys.tags.pub'));
$algo = defined('OPENSSL_ALGO_SHA384') ? OPENSSL_ALGO_SHA384 : 'SHA384';
if (!in_array('SHA384', openssl_get_md_methods())) {
out('SHA384 is not supported by your openssl extension, could not verify the phar file integrity', 'error');
exit(1);
}
$verified = 1 === openssl_verify(file_get_contents($file), $signature, $pubkeyid, $algo);
openssl_free_key($pubkeyid);
if (!$verified) {
out('Signature mismatch, could not verify the phar file integrity', 'error');
exit(1);
}
}
// test the phar validity
if (!ini_get('phar.readonly')) {
$phar = new Phar($pharFile);
// free the variable to unlock the file
unset($phar);
}
// clean up temp file if needed
if ($file !== $pharFile) {
unlink($pharFile);
}
break;
} catch (Exception $e) {
if (!$e instanceof UnexpectedValueException && !$e instanceof PharException) {
throw $e;
}
// clean up temp file if needed
if ($file !== $pharFile) {
unlink($pharFile);
}
unlink($file);
if ($retries) {
if (!$quiet) {
out('The download is corrupt, retrying...', 'error');
}
} else {
out('The download is corrupt ('.$e->getMessage().'), aborting.', 'error');
exit(1);
}
}
}
if ($errorHandler->message) {
out('The download failed repeatedly, aborting.', 'error');
exit(1);
}
chmod($file, 0755);
if (!$quiet) {
out(PHP_EOL."Composer successfully installed to: " . $file, 'success', false);
out(PHP_EOL."Use it: php $installPath", 'info');
}
}
/**
* colorize output
*/
function out($text, $color = null, $newLine = true)
{
$styles = array(
'success' => "\033[0;32m%s\033[0m",
'error' => "\033[31;31m%s\033[0m",
'info' => "\033[33;33m%s\033[0m"
);
$format = '%s';
if (isset($styles[$color]) && USE_ANSI) {
$format = $styles[$color];
}
if ($newLine) {
$format .= PHP_EOL;
}
printf($format, $text);
}
/**
* Returns the system-dependent Composer home location, which may not exist
*
* @return string
*/
function getHomeDir()
{
$home = getenv('COMPOSER_HOME');
if (!$home) {
$userDir = getUserDir();
if (defined('PHP_WINDOWS_VERSION_MAJOR')) {
$home = $userDir.'/Composer';
} else {
$home = $userDir.'/.composer';
if (!is_dir($home) && useXdg()) {
// XDG Base Directory Specifications
if (!($xdgConfig = getenv('XDG_CONFIG_HOME'))) {
$xdgConfig = $userDir.'/.config';
}
$home = $xdgConfig.'/composer';
}
}
}
return $home;
}
/**
* Returns the location of the user directory from the environment
* @throws Runtime Exception If the environment value does not exists
*
* @return string
*/
function getUserDir()
{
$userEnv = defined('PHP_WINDOWS_VERSION_MAJOR') ? 'APPDATA' : 'HOME';
$userDir = getenv($userEnv);
if (!$userDir) {
throw new RuntimeException('The '.$userEnv.' or COMPOSER_HOME environment variable must be set for composer to run correctly');
}
return rtrim(strtr($userDir, '\\', '/'), '/');
}
/**
* @return bool
*/
function useXdg()
{
foreach (array_keys($_SERVER) as $key) {
if (substr($key, 0, 4) === 'XDG_') {
return true;
}
}
return false;
}
function validateCaFile($contents)
{
// assume the CA is valid if php is vulnerable to
// https://www.sektioneins.de/advisories/advisory-012013-php-openssl_x509_parse-memory-corruption-vulnerability.html
if (
PHP_VERSION_ID <= 50327
|| (PHP_VERSION_ID >= 50400 && PHP_VERSION_ID < 50422)
|| (PHP_VERSION_ID >= 50500 && PHP_VERSION_ID < 50506)
) {
return !empty($contents);
}
return (bool) openssl_x509_parse($contents);
}
class ErrorHandler
{
public $message = '';
public function handleError($code, $msg)
{
if ($this->message) {
$this->message .= "\n";
}
$this->message .= preg_replace('{^copy\(.*?\): }', '', $msg);
}
}
class HttpClient {
private $options = array('http' => array());
private $disableTls = false;
public function __construct($disableTls = false, $cafile = false)
{
$this->disableTls = $disableTls;
if ($this->disableTls === false) {
if (!empty($cafile) && !is_dir($cafile)) {
if (!is_readable($cafile) || !validateCaFile(file_get_contents($cafile))) {
throw new RuntimeException('The configured cafile (' .$cafile. ') was not valid or could not be read.');
}
}
$options = $this->getTlsStreamContextDefaults($cafile);
$this->options = array_replace_recursive($this->options, $options);
}
}
public function get($url)
{
$context = $this->getStreamContext($url);
$result = file_get_contents($url, false, $context);
if ($result && extension_loaded('zlib')) {
$decode = false;
foreach ($http_response_header as $header) {
if (preg_match('{^content-encoding: *gzip *$}i', $header)) {
$decode = true;
continue;
} elseif (preg_match('{^HTTP/}i', $header)) {
$decode = false;
}
}
if ($decode) {
if (version_compare(PHP_VERSION, '5.4.0', '>=')) {
$result = zlib_decode($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 RuntimeException('Failed to decode zlib stream');
}
}
}
return $result;
}
protected function getStreamContext($url)
{
if ($this->disableTls === false) {
$host = parse_url($url, PHP_URL_HOST);
if (PHP_VERSION_ID < 50600) {
$this->options['ssl']['CN_match'] = $host;
$this->options['ssl']['SNI_server_name'] = $host;
}
}
// Keeping the above mostly isolated from the code copied from Composer.
return $this->getMergedStreamContext($url);
}
protected function getTlsStreamContextDefaults($cafile)
{
$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.
*/
$options = array(
'ssl' => array(
'ciphers' => $ciphers,
'verify_peer' => true,
'verify_depth' => 7,
'SNI_enabled' => true,
)
);
/**
* Attempt to find a local cafile or throw an exception.
* The user may go download one if this occurs.
*/
if (!$cafile) {
$cafile = self::getSystemCaRootBundlePath();
}
if (is_dir($cafile)) {
$options['ssl']['capath'] = $cafile;
} elseif ($cafile) {
$options['ssl']['cafile'] = $cafile;
} else {
throw new RuntimeException('A valid cafile could not be located automatically.');
}
/**
* Disable TLS compression to prevent CRIME attacks where supported.
*/
if (version_compare(PHP_VERSION, '5.4.13') >= 0) {
$options['ssl']['disable_compression'] = true;
}
return $options;
}
/**
* function copied from Composer\Util\StreamContextFactory::getContext
*
* Any changes should be applied there as well, or backported here.
*
* @param string $url URL the context is to be used for
* @return resource Default context
* @throws \RuntimeException if https proxy required and OpenSSL uninstalled
*/
protected function getMergedStreamContext($url)
{
$options = $this->options;
// Handle system proxy
if (!empty($_SERVER['HTTP_PROXY']) || !empty($_SERVER['http_proxy'])) {
// Some systems seem to rely on a lowercased version instead...
$proxy = parse_url(!empty($_SERVER['http_proxy']) ? $_SERVER['http_proxy'] : $_SERVER['HTTP_PROXY']);
}
if (!empty($proxy)) {
$proxyURL = isset($proxy['scheme']) ? $proxy['scheme'] . '://' : '';
$proxyURL .= isset($proxy['host']) ? $proxy['host'] : '';
if (isset($proxy['port'])) {
$proxyURL .= ":" . $proxy['port'];
} elseif ('http://' == substr($proxyURL, 0, 7)) {
$proxyURL .= ":80";
} elseif ('https://' == substr($proxyURL, 0, 8)) {
$proxyURL .= ":443";
}
// http(s):// is not supported in proxy
$proxyURL = str_replace(array('http://', 'https://'), array('tcp://', 'ssl://'), $proxyURL);
if (0 === strpos($proxyURL, 'ssl:') && !extension_loaded('openssl')) {
throw new RuntimeException('You must enable the openssl extension to use a proxy over https');
}
$options['http'] = array(
'proxy' => $proxyURL,
);
// enabled request_fulluri unless it is explicitly disabled
switch (parse_url($url, PHP_URL_SCHEME)) {
case 'http': // default request_fulluri to true
$reqFullUriEnv = getenv('HTTP_PROXY_REQUEST_FULLURI');
if ($reqFullUriEnv === false || $reqFullUriEnv === '' || (strtolower($reqFullUriEnv) !== 'false' && (bool) $reqFullUriEnv)) {
$options['http']['request_fulluri'] = true;
}
break;
case 'https': // default request_fulluri to true
$reqFullUriEnv = getenv('HTTPS_PROXY_REQUEST_FULLURI');
if ($reqFullUriEnv === false || $reqFullUriEnv === '' || (strtolower($reqFullUriEnv) !== 'false' && (bool) $reqFullUriEnv)) {
$options['http']['request_fulluri'] = true;
}
break;
}
if (isset($proxy['user'])) {
$auth = urldecode($proxy['user']);
if (isset($proxy['pass'])) {
$auth .= ':' . urldecode($proxy['pass']);
}
$auth = base64_encode($auth);
$options['http']['header'] = "Proxy-Authorization: Basic {$auth}\r\n";
}
}
if (isset($options['http']['header'])) {
$options['http']['header'] .= "Connection: close\r\n";
} else {
$options['http']['header'] = "Connection: close\r\n";
}
if (extension_loaded('zlib')) {
$options['http']['header'] .= "Accept-Encoding: gzip\r\n";
}
$options['http']['header'] .= "User-Agent: Composer Installer\r\n";
$options['http']['protocol_version'] = 1.1;
return stream_context_create($options);
}
/**
* This method was adapted from Sslurp.
* https://github.com/EvanDotPro/Sslurp
*
* (c) Evan Coury <[email protected]>
*
* 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