eventespresso / event-espresso-core

composer-setup.php

Doc Comments +14 added lines, -4 removed lines

@@ -148,7 +148,7 @@ 
  *
  * @param string $opt The command-line option to check
  * @param array $argv Command-line arguments
- * @param mixed $default Default value to be returned
+ * @param false|string $default Default value to be returned
  *
  * @return mixed The command-line value or the default
  */
@@ -491,6 +491,7 @@ 
 
 /**
  * colorize output
+ * @param string $color
  */
 function out($text, $color = null, $newLine = true)
 {
@@ -573,6 +574,9 @@ 
     return false;
 }
 
+/**
+ * @param string $contents
+ */
 function validateCaFile($contents)
 {
     // assume the CA is valid if php is vulnerable to
@@ -608,7 +612,7 @@ 
      *
      * @param bool $quiet Quiet mode
      * @param bool $disableTls Bypass tls
-     * @param mixed $cafile Path to CA bundle, or false
+     * @param mixed $caFile Path to CA bundle, or false
      */
     public function __construct($quiet, $disableTls, $caFile)
     {
@@ -946,9 +950,9 @@ 
      * Parses an array of version data to match the required channel
      *
      * @param array $data Downloaded version data
-     * @param mixed $channel Version channel to use
+     * @param string $channel Version channel to use
      * @param false|string $version Set by method
-     * @param mixed $url The versioned url, set by method
+     * @param null|string $url The versioned url, set by method
      */
     protected function parseVersionData(array $data, $channel, &$version, &$url)
     {
@@ -1276,6 +1280,9 @@ 
         }
     }
 
+    /**
+     * @param string $url
+     */
     public function get($url)
     {
         $context = $this->getStreamContext($url);
@@ -1320,6 +1327,9 @@ 
         return $this->getMergedStreamContext($url);
     }
 
+    /**
+     * @param boolean $cafile
+     */
     protected function getTlsStreamContextDefaults($cafile)
     {
         $ciphers = implode(':', array(

Indentation +1373 added lines, -1373 removed lines

@@ -20,26 +20,26 @@ 
  */
 function setupEnvironment()
 {
-    ini_set('display_errors', 1);
-
-    if (extension_loaded('uopz') && !(ini_get('uopz.disable') || ini_get('uopz.exit'))) {
-        // uopz works at opcode level and disables exit calls
-        if (function_exists('uopz_allow_exit')) {
-            @uopz_allow_exit(true);
-        } else {
-            throw new RuntimeException('The uopz extension ignores exit calls and breaks this installer.');
-        }
-    }
-
-    $installer = 'Composer Installer';
-
-    if (defined('PHP_WINDOWS_VERSION_MAJOR')) {
-        if ($version = getenv('COMPOSERSETUP')) {
-            $installer = sprintf('Composer-Setup.exe %s', $version);
-        }
-    }
-
-    define('COMPOSER_INSTALLER', $installer);
+	ini_set('display_errors', 1);
+
+	if (extension_loaded('uopz') && !(ini_get('uopz.disable') || ini_get('uopz.exit'))) {
+		// uopz works at opcode level and disables exit calls
+		if (function_exists('uopz_allow_exit')) {
+			@uopz_allow_exit(true);
+		} else {
+			throw new RuntimeException('The uopz extension ignores exit calls and breaks this installer.');
+		}
+	}
+
+	$installer = 'Composer Installer';
+
+	if (defined('PHP_WINDOWS_VERSION_MAJOR')) {
+		if ($version = getenv('COMPOSERSETUP')) {
+			$installer = sprintf('Composer-Setup.exe %s', $version);
+		}
+	}
+
+	define('COMPOSER_INSTALLER', $installer);
 }
 
 /**
@@ -47,50 +47,50 @@ 
  */
 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, $disableTls, true);
-
-    if ($check) {
-        // Only show warnings if we haven't output any errors
-        if ($ok) {
-            showWarnings($warnings);
-            showSecurityWarning($disableTls);
-        }
-        exit($ok ? 0 : 1);
-    }
-
-    if ($ok || $force) {
-        $installer = new Installer($quiet, $disableTls, $cafile);
-        if ($installer->run($version, $installDir, $filename, $channel)) {
-            showWarnings($warnings);
-            showSecurityWarning($disableTls);
-            exit(0);
-        }
-    }
-
-    exit(1);
+	// Determine ANSI output from --ansi and --no-ansi flags
+	setUseAnsi($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, $disableTls, true);
+
+	if ($check) {
+		// Only show warnings if we haven't output any errors
+		if ($ok) {
+			showWarnings($warnings);
+			showSecurityWarning($disableTls);
+		}
+		exit($ok ? 0 : 1);
+	}
+
+	if ($ok || $force) {
+		$installer = new Installer($quiet, $disableTls, $cafile);
+		if ($installer->run($version, $installDir, $filename, $channel)) {
+			showWarnings($warnings);
+			showSecurityWarning($disableTls);
+			exit(0);
+		}
+	}
+
+	exit(1);
 }
 
 /**
@@ -98,7 +98,7 @@ 
  */
 function displayHelp()
 {
-    echo <<<EOF
+	echo <<<EOF
 Composer Installer
 ------------------
 Options
@@ -126,21 +126,21 @@ 
  */
 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))
-        );
-    }
+	// --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))
+		);
+	}
 }
 
 /**
@@ -154,20 +154,20 @@ 
  */
 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;
+	$optLength = strlen($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;
 }
 
 /**
@@ -181,23 +181,23 @@ 
  */
 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 !== $version && 1 !== preg_match('/^\d+\.\d+\.\d+(\-(alpha|beta|RC)\d*)*$/', $version)) {
-        out("The defined install version ({$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;
+	$result = true;
+
+	if (false !== $installDir && !is_dir($installDir)) {
+		out("The defined install dir ({$installDir}) does not exist.", 'info');
+		$result = false;
+	}
+
+	if (false !== $version && 1 !== preg_match('/^\d+\.\d+\.\d+(\-(alpha|beta|RC)\d*)*$/', $version)) {
+		out("The defined install version ({$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;
 }
 
 /**
@@ -214,25 +214,25 @@ 
  */
 function checkPlatform(&$warnings, $quiet, $disableTls, $install)
 {
-    getPlatformIssues($errors, $warnings, $install);
-
-    // Make openssl warning an error if tls has not been specifically disabled
-    if (isset($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;
+	getPlatformIssues($errors, $warnings, $install);
+
+	// Make openssl warning an error if tls has not been specifically disabled
+	if (isset($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;
 }
 
 /**
@@ -246,206 +246,206 @@ 
  */
 function getPlatformIssues(&$errors, &$warnings, $install)
 {
-    $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',
-            $iniMessage
-        );
-    }
-
-    if (!$install && 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
-        );
-    }
-
-    if (defined('PHP_WINDOWS_VERSION_BUILD')
-        && (version_compare(PHP_VERSION, '7.2.23', '<')
-        || (version_compare(PHP_VERSION, '7.3.0', '>=')
-        && version_compare(PHP_VERSION, '7.3.10', '<')))) {
-        $warnings['onedrive'] = array(
-            'The Windows OneDrive folder is not supported on PHP versions below 7.2.23 and 7.3.10.',
-            'Upgrade your PHP ('.PHP_VERSION.') to use this location with Composer.'
-        );
-    }
-
-    if (extension_loaded('uopz') && !(ini_get('uopz.disable') || ini_get('uopz.exit'))) {
-        $warnings['uopz'] = array(
-            'The uopz extension ignores exit calls and may not work with all Composer commands.',
-            'Disabling it when using Composer is recommended.'
-        );
-    }
-
-    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);
+	$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',
+			$iniMessage
+		);
+	}
+
+	if (!$install && 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
+		);
+	}
+
+	if (defined('PHP_WINDOWS_VERSION_BUILD')
+		&& (version_compare(PHP_VERSION, '7.2.23', '<')
+		|| (version_compare(PHP_VERSION, '7.3.0', '>=')
+		&& version_compare(PHP_VERSION, '7.3.10', '<')))) {
+		$warnings['onedrive'] = array(
+			'The Windows OneDrive folder is not supported on PHP versions below 7.2.23 and 7.3.10.',
+			'Upgrade your PHP ('.PHP_VERSION.') to use this location with Composer.'
+		);
+	}
+
+	if (extension_loaded('uopz') && !(ini_get('uopz.disable') || ini_get('uopz.exit'))) {
+		$warnings['uopz'] = array(
+			'The uopz extension ignores exit calls and may not work with all Composer commands.',
+			'Disabling it when using Composer is recommended.'
+		);
+	}
+
+	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);
 }
 
 
@@ -456,10 +456,10 @@ 
  */
 function outputIssues($issues)
 {
-    foreach ($issues as $issue) {
-        out($issue, 'info');
-    }
-    out('');
+	foreach ($issues as $issue) {
+		out($issue, 'info');
+	}
+	out('');
 }
 
 /**
@@ -469,11 +469,11 @@ 
  */
 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($warnings);
-    }
+	if (!empty($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);
+	}
 }
 
 /**
@@ -483,10 +483,10 @@ 
  */
 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');
-    }
+	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');
+	}
 }
 
 /**
@@ -494,23 +494,23 @@ 
  */
 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"
-    );
+	$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';
+	$format = '%s';
 
-    if (isset($styles[$color]) && USE_ANSI) {
-        $format = $styles[$color];
-    }
+	if (isset($styles[$color]) && USE_ANSI) {
+		$format = $styles[$color];
+	}
 
-    if ($newLine) {
-        $format .= PHP_EOL;
-    }
+	if ($newLine) {
+		$format .= PHP_EOL;
+	}
 
-    printf($format, $text);
+	printf($format, $text);
 }
 
 /**
@@ -520,26 +520,26 @@ 
  */
 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;
+	$home = getenv('COMPOSER_HOME');
+
+	if (!$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;
 }
 
 /**
@@ -550,14 +550,14 @@ 
  */
 function getUserDir()
 {
-    $userEnv = defined('PHP_WINDOWS_VERSION_MAJOR') ? 'APPDATA' : 'HOME';
-    $userDir = getenv($userEnv);
+	$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');
-    }
+	if (!$userDir) {
+		throw new RuntimeException('The '.$userEnv.' or COMPOSER_HOME environment variable must be set for composer to run correctly');
+	}
 
-    return rtrim(strtr($userDir, '\\', '/'), '/');
+	return rtrim(strtr($userDir, '\\', '/'), '/');
 }
 
 /**
@@ -565,565 +565,565 @@ 
  */
 function useXdg()
 {
-    foreach (array_keys($_SERVER) as $key) {
-        if (substr($key, 0, 4) === 'XDG_') {
-            return true;
-        }
-    }
-    return false;
+	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($contents);
+	// assume the CA is valid if php is vulnerable to
+	// https://www.sektioneins.de/advisories/advisory-012013-php-openssl_x509_parse-memory-corruption-vulnerability.html
+	if (
+		PHP_VERSION_ID <= 50327
+		|| (PHP_VERSION_ID >= 50400 && PHP_VERSION_ID < 50422)
+		|| (PHP_VERSION_ID >= 50500 && PHP_VERSION_ID < 50506)
+	) {
+		return !empty($contents);
+	}
+
+	return (bool) openssl_x509_parse($contents);
 }
 
 class Installer
 {
-    private $quiet;
-    private $disableTls;
-    private $cafile;
-    private $installPath;
-    private $target;
-    private $tmpFile;
-    private $baseUrl;
-    private $algo;
-    private $errHandler;
-    private $httpClient;
-    private $pubKeys = array();
-    private $installs = array();
-
-    /**
-     * Constructor - must not do anything that throws an exception
-     *
-     * @param bool $quiet Quiet mode
-     * @param bool $disableTls Bypass tls
-     * @param mixed $cafile Path to CA bundle, or false
-     */
-    public function __construct($quiet, $disableTls, $caFile)
-    {
-        if (($this->quiet = $quiet)) {
-            ob_start();
-        }
-        $this->disableTls = $disableTls;
-        $this->cafile = $caFile;
-        $this->errHandler = new ErrorHandler();
-    }
-
-    /**
-     * Runs the installer
-     *
-     * @param mixed $version Specific version to install, or false
-     * @param mixed $installDir Specific installation directory, or false
-     * @param string $filename Specific filename to save to, or composer.phar
-     * @param string $channel Specific version channel to use
-     * @throws Exception If anything other than a RuntimeException is caught
-     *
-     * @return bool If the installation succeeded
-     */
-    public function run($version, $installDir, $filename, $channel)
-    {
-        try {
-            $this->initTargets($installDir, $filename);
-            $this->initTls();
-            $this->httpClient = new HttpClient($this->disableTls, $this->cafile);
-            $result = $this->install($version, $channel);
-
-            if ($result && $channel !== 'stable' && !$version && defined('PHP_BINARY')) {
-                $null = (defined('PHP_WINDOWS_VERSION_MAJOR') ? 'NUL' : '/dev/null');
-                @exec(escapeshellarg(PHP_BINARY) .' '.escapeshellarg($this->target).' self-update --'.$channel.' --set-channel-only -q > '.$null.' 2> '.$null, $output);
-            }
-        } catch (Exception $e) {
-            $result = false;
-        }
-
-        // Always clean up
-        $this->cleanUp($result);
-
-        if (isset($e)) {
-            // Rethrow anything that is not a RuntimeException
-            if (!$e instanceof RuntimeException) {
-                throw $e;
-            }
-            out($e->getMessage(), 'error');
-        }
-        return $result;
-    }
-
-    /**
-     * Initialization methods to set the required filenames and composer url
-     *
-     * @param mixed $installDir Specific installation directory, or false
-     * @param string $filename Specific filename to save to, or composer.phar
-     * @throws RuntimeException If the installation directory is not writable
-     */
-    protected function initTargets($installDir, $filename)
-    {
-        $this->installPath = (is_dir($installDir) ? rtrim($installDir, '/').'/' : '').$filename;
-        $installDir = realpath($installDir) ? realpath($installDir) : getcwd();
-
-        if (!is_writeable($installDir)) {
-            throw new RuntimeException('The installation directory "'.$installDir.'" is not writable');
-        }
-
-        $this->target = $installDir.DIRECTORY_SEPARATOR.$filename;
-        $this->tmpFile = $installDir.DIRECTORY_SEPARATOR.basename($this->target, '.phar').'-temp.phar';
-
-        $uriScheme = $this->disableTls ? 'http' : 'https';
-        $this->baseUrl = $uriScheme.'://getcomposer.org';
-    }
-
-    /**
-     * A wrapper around methods to check tls and write public keys
-     * @throws RuntimeException If SHA384 is not supported
-     */
-    protected function initTls()
-    {
-        if ($this->disableTls) {
-            return;
-        }
-
-        if (!in_array('sha384', array_map('strtolower', openssl_get_md_methods()))) {
-            throw new RuntimeException('SHA384 is not supported by your openssl extension');
-        }
-
-        $this->algo = defined('OPENSSL_ALGO_SHA384') ? OPENSSL_ALGO_SHA384 : 'SHA384';
-        $home = $this->getComposerHome();
-
-        $this->pubKeys = array(
-            'dev' => $this->installKey(self::getPKDev(), $home, 'keys.dev.pub'),
-            'tags' => $this->installKey(self::getPKTags(), $home, 'keys.tags.pub')
-        );
-
-        if (empty($this->cafile) && !HttpClient::getSystemCaRootBundlePath()) {
-            $this->cafile = $this->installKey(HttpClient::getPackagedCaFile(), $home, 'cacert.pem');
-        }
-    }
-
-    /**
-     * Returns the Composer home directory, creating it if required
-     * @throws RuntimeException If the directory cannot be created
-     *
-     * @return string
-     */
-    protected function getComposerHome()
-    {
-        $home = getHomeDir();
-
-        if (!is_dir($home)) {
-            $this->errHandler->start();
-
-            if (!mkdir($home, 0777, true)) {
-                throw new RuntimeException(sprintf(
-                    'Unable to create Composer home directory "%s": %s',
-                    $home,
-                    $this->errHandler->message
-                ));
-            }
-            $this->installs[] = $home;
-            $this->errHandler->stop();
-        }
-        return $home;
-    }
-
-    /**
-     * Writes public key data to disc
-     *
-     * @param string $data The public key(s) in pem format
-     * @param string $path The directory to write to
-     * @param string $filename The name of the file
-     * @throws RuntimeException If the file cannot be written
-     *
-     * @return string The path to the saved data
-     */
-    protected function installKey($data, $path, $filename)
-    {
-        $this->errHandler->start();
-
-        $target = $path.DIRECTORY_SEPARATOR.$filename;
-        $installed = file_exists($target);
-        $write = file_put_contents($target, $data, LOCK_EX);
-        @chmod($target, 0644);
-
-        $this->errHandler->stop();
-
-        if (!$write) {
-            throw new RuntimeException(sprintf('Unable to write %s to: %s', $filename, $path));
-        }
-
-        if (!$installed) {
-            $this->installs[] = $target;
-        }
-
-        return $target;
-    }
-
-    /**
-     * The main install function
-     *
-     * @param mixed $version Specific version to install, or false
-     * @param string $channel Version channel to use
-     *
-     * @return bool If the installation succeeded
-     */
-    protected function install($version, $channel)
-    {
-        $retries = 3;
-        $result = false;
-        $infoMsg = 'Downloading...';
-        $infoType = 'info';
-
-        while ($retries--) {
-            if (!$this->quiet) {
-                out($infoMsg, $infoType);
-                $infoMsg = 'Retrying...';
-                $infoType = 'error';
-            }
-
-            if (!$this->getVersion($channel, $version, $url, $error)) {
-                out($error, 'error');
-                continue;
-            }
-
-            if (!$this->downloadToTmp($url, $signature, $error)) {
-                out($error, 'error');
-                continue;
-            }
-
-            if (!$this->verifyAndSave($version, $signature, $error)) {
-                out($error, 'error');
-                continue;
-            }
-
-            $result = true;
-            break;
-        }
-
-        if (!$this->quiet) {
-            if ($result) {
-                out(PHP_EOL."Composer (version {$version}) successfully installed to: {$this->target}", 'success');
-                out("Use it: php {$this->installPath}", 'info');
-                out('');
-            } else {
-                out('The download failed repeatedly, aborting.', 'error');
-            }
-        }
-        return $result;
-    }
-
-    /**
-     * Sets the version url, downloading version data if required
-     *
-     * @param string $channel Version channel to use
-     * @param false|string $version Version to install, or set by method
-     * @param null|string $url The versioned url, set by method
-     * @param null|string $error Set by method on failure
-     *
-     * @return bool If the operation succeeded
-     */
-    protected function getVersion($channel, &$version, &$url, &$error)
-    {
-        $error = '';
-
-        if ($version) {
-            if (empty($url)) {
-                $url = $this->baseUrl."/download/{$version}/composer.phar";
-            }
-            return true;
-        }
-
-        $this->errHandler->start();
-
-        if ($this->downloadVersionData($data, $error)) {
-            $this->parseVersionData($data, $channel, $version, $url);
-        }
-
-        $this->errHandler->stop();
-        return empty($error);
-    }
-
-    /**
-     * Downloads and json-decodes version data
-     *
-     * @param null|array $data Downloaded version data, set by method
-     * @param null|string $error Set by method on failure
-     *
-     * @return bool If the operation succeeded
-     */
-    protected function downloadVersionData(&$data, &$error)
-    {
-        $url = $this->baseUrl.'/versions';
-        $errFmt = 'The "%s" file could not be %s: %s';
-
-        if (!$json = $this->httpClient->get($url)) {
-            $error = sprintf($errFmt, $url, 'downloaded', $this->errHandler->message);
-            return false;
-        }
-
-        if (!$data = json_decode($json, true)) {
-            $error = sprintf($errFmt, $url, 'json-decoded', $this->getJsonError());
-            return false;
-        }
-        return true;
-    }
-
-    /**
-     * A wrapper around the methods needed to download and save the phar
-     *
-     * @param string $url The versioned download url
-     * @param null|string $signature Set by method on successful download
-     * @param null|string $error Set by method on failure
-     *
-     * @return bool If the operation succeeded
-     */
-    protected function downloadToTmp($url, &$signature, &$error)
-    {
-        $error = '';
-        $errFmt = 'The "%s" file could not be downloaded: %s';
-        $sigUrl = $url.'.sig';
-        $this->errHandler->start();
-
-        if (!$fh = fopen($this->tmpFile, 'w')) {
-            $error = sprintf('Could not create file "%s": %s', $this->tmpFile, $this->errHandler->message);
-
-        } elseif (!$this->getSignature($sigUrl, $signature)) {
-            $error = sprintf($errFmt, $sigUrl, $this->errHandler->message);
-
-        } elseif (!fwrite($fh, $this->httpClient->get($url))) {
-            $error = sprintf($errFmt, $url, $this->errHandler->message);
-        }
-
-        if (is_resource($fh)) {
-            fclose($fh);
-        }
-        $this->errHandler->stop();
-        return empty($error);
-    }
-
-    /**
-     * Verifies the downloaded file and saves it to the target location
-     *
-     * @param string $version The composer version downloaded
-     * @param string $signature The digital signature to check
-     * @param null|string $error Set by method on failure
-     *
-     * @return bool If the operation succeeded
-     */
-    protected function verifyAndSave($version, $signature, &$error)
-    {
-        $error = '';
-
-        if (!$this->validatePhar($this->tmpFile, $pharError)) {
-            $error = 'The download is corrupt: '.$pharError;
-
-        } elseif (!$this->verifySignature($version, $signature, $this->tmpFile)) {
-            $error = 'Signature mismatch, could not verify the phar file integrity';
-
-        } else {
-            $this->errHandler->start();
-
-            if (!rename($this->tmpFile, $this->target)) {
-                $error = sprintf('Could not write to file "%s": %s', $this->target, $this->errHandler->message);
-            }
-            chmod($this->target, 0755);
-            $this->errHandler->stop();
-        }
-
-        return empty($error);
-    }
-
-    /**
-     * Parses an array of version data to match the required channel
-     *
-     * @param array $data Downloaded version data
-     * @param mixed $channel Version channel to use
-     * @param false|string $version Set by method
-     * @param mixed $url The versioned url, set by method
-     */
-    protected function parseVersionData(array $data, $channel, &$version, &$url)
-    {
-        foreach ($data[$channel] as $candidate) {
-            if ($candidate['min-php'] <= PHP_VERSION_ID) {
-                $version = $candidate['version'];
-                $url = $this->baseUrl.$candidate['path'];
-                break;
-            }
-        }
-
-        if (!$version) {
-            $error = sprintf(
-                'None of the %d %s version(s) of Composer matches your PHP version (%s / ID: %d)',
-                count($data[$channel]),
-                $channel,
-                PHP_VERSION,
-                PHP_VERSION_ID
-            );
-            throw new RuntimeException($error);
-        }
-    }
-
-    /**
-     * Downloads the digital signature of required phar file
-     *
-     * @param string $url The signature url
-     * @param null|string $signature Set by method on success
-     *
-     * @return bool If the download succeeded
-     */
-    protected function getSignature($url, &$signature)
-    {
-        if (!$result = $this->disableTls) {
-            $signature = $this->httpClient->get($url);
-
-            if ($signature) {
-                $signature = json_decode($signature, true);
-                $signature = base64_decode($signature['sha384']);
-                $result = true;
-            }
-        }
-
-        return $result;
-    }
-
-    /**
-     * Verifies the signature of the downloaded phar
-     *
-     * @param string $version The composer versione
-     * @param string $signature The downloaded digital signature
-     * @param string $file The temp phar file
-     *
-     * @return bool If the operation succeeded
-     */
-    protected function verifySignature($version, $signature, $file)
-    {
-        if (!$result = $this->disableTls) {
-            $path = preg_match('{^[0-9a-f]{40}$}', $version) ? $this->pubKeys['dev'] : $this->pubKeys['tags'];
-            $pubkeyid = openssl_pkey_get_public('file://'.$path);
-
-            $result = 1 === openssl_verify(
-                file_get_contents($file),
-                $signature,
-                $pubkeyid,
-                $this->algo
-            );
-
-            openssl_free_key($pubkeyid);
-        }
-
-        return $result;
-    }
-
-    /**
-     * Validates the downloaded phar file
-     *
-     * @param string $pharFile The temp phar file
-     * @param null|string $error Set by method on failure
-     *
-     * @return bool If the operation succeeded
-     */
-    protected function validatePhar($pharFile, &$error)
-    {
-        if (ini_get('phar.readonly')) {
-            return true;
-        }
-
-        try {
-            // Test the phar validity
-            $phar = new Phar($pharFile);
-            // Free the variable to unlock the file
-            unset($phar);
-            $result = true;
-
-        } catch (Exception $e) {
-            if (!$e instanceof UnexpectedValueException && !$e instanceof PharException) {
-                throw $e;
-            }
-            $error = $e->getMessage();
-            $result = false;
-        }
-        return $result;
-    }
-
-    /**
-     * Returns a string representation of the last json error
-     *
-     * @return string The error string or code
-     */
-    protected function getJsonError()
-    {
-        if (function_exists('json_last_error_msg')) {
-            return json_last_error_msg();
-        } else {
-            return 'json_last_error = '.json_last_error();
-        }
-    }
-
-    /**
-     * Cleans up resources at the end of the installation
-     *
-     * @param bool $result If the installation succeeded
-     */
-    protected function cleanUp($result)
-    {
-        if (!$result) {
-            // Output buffered errors
-            if ($this->quiet) {
-                $this->outputErrors();
-            }
-            // Clean up stuff we created
-            $this->uninstall();
-        }
-    }
-
-    /**
-     * Outputs unique errors when in quiet mode
-     *
-     */
-    protected function outputErrors()
-    {
-        $errors = explode(PHP_EOL, ob_get_clean());
-        $shown = array();
-
-        foreach ($errors as $error) {
-            if ($error && !in_array($error, $shown)) {
-                out($error, 'error');
-                $shown[] = $error;
-            }
-        }
-    }
-
-    /**
-     * Uninstalls newly-created files and directories on failure
-     *
-     */
-    protected function uninstall()
-    {
-        foreach (array_reverse($this->installs) as $target) {
-            if (is_file($target)) {
-                @unlink($target);
-            } elseif (is_dir($target)) {
-                @rmdir($target);
-            }
-        }
-
-        if (file_exists($this->tmpFile)) {
-            @unlink($this->tmpFile);
-        }
-    }
-
-    public static function getPKDev()
-    {
-        return <<<PKDEV
+	private $quiet;
+	private $disableTls;
+	private $cafile;
+	private $installPath;
+	private $target;
+	private $tmpFile;
+	private $baseUrl;
+	private $algo;
+	private $errHandler;
+	private $httpClient;
+	private $pubKeys = array();
+	private $installs = array();
+
+	/**
+	 * Constructor - must not do anything that throws an exception
+	 *
+	 * @param bool $quiet Quiet mode
+	 * @param bool $disableTls Bypass tls
+	 * @param mixed $cafile Path to CA bundle, or false
+	 */
+	public function __construct($quiet, $disableTls, $caFile)
+	{
+		if (($this->quiet = $quiet)) {
+			ob_start();
+		}
+		$this->disableTls = $disableTls;
+		$this->cafile = $caFile;
+		$this->errHandler = new ErrorHandler();
+	}
+
+	/**
+	 * Runs the installer
+	 *
+	 * @param mixed $version Specific version to install, or false
+	 * @param mixed $installDir Specific installation directory, or false
+	 * @param string $filename Specific filename to save to, or composer.phar
+	 * @param string $channel Specific version channel to use
+	 * @throws Exception If anything other than a RuntimeException is caught
+	 *
+	 * @return bool If the installation succeeded
+	 */
+	public function run($version, $installDir, $filename, $channel)
+	{
+		try {
+			$this->initTargets($installDir, $filename);
+			$this->initTls();
+			$this->httpClient = new HttpClient($this->disableTls, $this->cafile);
+			$result = $this->install($version, $channel);
+
+			if ($result && $channel !== 'stable' && !$version && defined('PHP_BINARY')) {
+				$null = (defined('PHP_WINDOWS_VERSION_MAJOR') ? 'NUL' : '/dev/null');
+				@exec(escapeshellarg(PHP_BINARY) .' '.escapeshellarg($this->target).' self-update --'.$channel.' --set-channel-only -q > '.$null.' 2> '.$null, $output);
+			}
+		} catch (Exception $e) {
+			$result = false;
+		}
+
+		// Always clean up
+		$this->cleanUp($result);
+
+		if (isset($e)) {
+			// Rethrow anything that is not a RuntimeException
+			if (!$e instanceof RuntimeException) {
+				throw $e;
+			}
+			out($e->getMessage(), 'error');
+		}
+		return $result;
+	}
+
+	/**
+	 * Initialization methods to set the required filenames and composer url
+	 *
+	 * @param mixed $installDir Specific installation directory, or false
+	 * @param string $filename Specific filename to save to, or composer.phar
+	 * @throws RuntimeException If the installation directory is not writable
+	 */
+	protected function initTargets($installDir, $filename)
+	{
+		$this->installPath = (is_dir($installDir) ? rtrim($installDir, '/').'/' : '').$filename;
+		$installDir = realpath($installDir) ? realpath($installDir) : getcwd();
+
+		if (!is_writeable($installDir)) {
+			throw new RuntimeException('The installation directory "'.$installDir.'" is not writable');
+		}
+
+		$this->target = $installDir.DIRECTORY_SEPARATOR.$filename;
+		$this->tmpFile = $installDir.DIRECTORY_SEPARATOR.basename($this->target, '.phar').'-temp.phar';
+
+		$uriScheme = $this->disableTls ? 'http' : 'https';
+		$this->baseUrl = $uriScheme.'://getcomposer.org';
+	}
+
+	/**
+	 * A wrapper around methods to check tls and write public keys
+	 * @throws RuntimeException If SHA384 is not supported
+	 */
+	protected function initTls()
+	{
+		if ($this->disableTls) {
+			return;
+		}
+
+		if (!in_array('sha384', array_map('strtolower', openssl_get_md_methods()))) {
+			throw new RuntimeException('SHA384 is not supported by your openssl extension');
+		}
+
+		$this->algo = defined('OPENSSL_ALGO_SHA384') ? OPENSSL_ALGO_SHA384 : 'SHA384';
+		$home = $this->getComposerHome();
+
+		$this->pubKeys = array(
+			'dev' => $this->installKey(self::getPKDev(), $home, 'keys.dev.pub'),
+			'tags' => $this->installKey(self::getPKTags(), $home, 'keys.tags.pub')
+		);
+
+		if (empty($this->cafile) && !HttpClient::getSystemCaRootBundlePath()) {
+			$this->cafile = $this->installKey(HttpClient::getPackagedCaFile(), $home, 'cacert.pem');
+		}
+	}
+
+	/**
+	 * Returns the Composer home directory, creating it if required
+	 * @throws RuntimeException If the directory cannot be created
+	 *
+	 * @return string
+	 */
+	protected function getComposerHome()
+	{
+		$home = getHomeDir();
+
+		if (!is_dir($home)) {
+			$this->errHandler->start();
+
+			if (!mkdir($home, 0777, true)) {
+				throw new RuntimeException(sprintf(
+					'Unable to create Composer home directory "%s": %s',
+					$home,
+					$this->errHandler->message
+				));
+			}
+			$this->installs[] = $home;
+			$this->errHandler->stop();
+		}
+		return $home;
+	}
+
+	/**
+	 * Writes public key data to disc
+	 *
+	 * @param string $data The public key(s) in pem format
+	 * @param string $path The directory to write to
+	 * @param string $filename The name of the file
+	 * @throws RuntimeException If the file cannot be written
+	 *
+	 * @return string The path to the saved data
+	 */
+	protected function installKey($data, $path, $filename)
+	{
+		$this->errHandler->start();
+
+		$target = $path.DIRECTORY_SEPARATOR.$filename;
+		$installed = file_exists($target);
+		$write = file_put_contents($target, $data, LOCK_EX);
+		@chmod($target, 0644);
+
+		$this->errHandler->stop();
+
+		if (!$write) {
+			throw new RuntimeException(sprintf('Unable to write %s to: %s', $filename, $path));
+		}
+
+		if (!$installed) {
+			$this->installs[] = $target;
+		}
+
+		return $target;
+	}
+
+	/**
+	 * The main install function
+	 *
+	 * @param mixed $version Specific version to install, or false
+	 * @param string $channel Version channel to use
+	 *
+	 * @return bool If the installation succeeded
+	 */
+	protected function install($version, $channel)
+	{
+		$retries = 3;
+		$result = false;
+		$infoMsg = 'Downloading...';
+		$infoType = 'info';
+
+		while ($retries--) {
+			if (!$this->quiet) {
+				out($infoMsg, $infoType);
+				$infoMsg = 'Retrying...';
+				$infoType = 'error';
+			}
+
+			if (!$this->getVersion($channel, $version, $url, $error)) {
+				out($error, 'error');
+				continue;
+			}
+
+			if (!$this->downloadToTmp($url, $signature, $error)) {
+				out($error, 'error');
+				continue;
+			}
+
+			if (!$this->verifyAndSave($version, $signature, $error)) {
+				out($error, 'error');
+				continue;
+			}
+
+			$result = true;
+			break;
+		}
+
+		if (!$this->quiet) {
+			if ($result) {
+				out(PHP_EOL."Composer (version {$version}) successfully installed to: {$this->target}", 'success');
+				out("Use it: php {$this->installPath}", 'info');
+				out('');
+			} else {
+				out('The download failed repeatedly, aborting.', 'error');
+			}
+		}
+		return $result;
+	}
+
+	/**
+	 * Sets the version url, downloading version data if required
+	 *
+	 * @param string $channel Version channel to use
+	 * @param false|string $version Version to install, or set by method
+	 * @param null|string $url The versioned url, set by method
+	 * @param null|string $error Set by method on failure
+	 *
+	 * @return bool If the operation succeeded
+	 */
+	protected function getVersion($channel, &$version, &$url, &$error)
+	{
+		$error = '';
+
+		if ($version) {
+			if (empty($url)) {
+				$url = $this->baseUrl."/download/{$version}/composer.phar";
+			}
+			return true;
+		}
+
+		$this->errHandler->start();
+
+		if ($this->downloadVersionData($data, $error)) {
+			$this->parseVersionData($data, $channel, $version, $url);
+		}
+
+		$this->errHandler->stop();
+		return empty($error);
+	}
+
+	/**
+	 * Downloads and json-decodes version data
+	 *
+	 * @param null|array $data Downloaded version data, set by method
+	 * @param null|string $error Set by method on failure
+	 *
+	 * @return bool If the operation succeeded
+	 */
+	protected function downloadVersionData(&$data, &$error)
+	{
+		$url = $this->baseUrl.'/versions';
+		$errFmt = 'The "%s" file could not be %s: %s';
+
+		if (!$json = $this->httpClient->get($url)) {
+			$error = sprintf($errFmt, $url, 'downloaded', $this->errHandler->message);
+			return false;
+		}
+
+		if (!$data = json_decode($json, true)) {
+			$error = sprintf($errFmt, $url, 'json-decoded', $this->getJsonError());
+			return false;
+		}
+		return true;
+	}
+
+	/**
+	 * A wrapper around the methods needed to download and save the phar
+	 *
+	 * @param string $url The versioned download url
+	 * @param null|string $signature Set by method on successful download
+	 * @param null|string $error Set by method on failure
+	 *
+	 * @return bool If the operation succeeded
+	 */
+	protected function downloadToTmp($url, &$signature, &$error)
+	{
+		$error = '';
+		$errFmt = 'The "%s" file could not be downloaded: %s';
+		$sigUrl = $url.'.sig';
+		$this->errHandler->start();
+
+		if (!$fh = fopen($this->tmpFile, 'w')) {
+			$error = sprintf('Could not create file "%s": %s', $this->tmpFile, $this->errHandler->message);
+
+		} elseif (!$this->getSignature($sigUrl, $signature)) {
+			$error = sprintf($errFmt, $sigUrl, $this->errHandler->message);
+
+		} elseif (!fwrite($fh, $this->httpClient->get($url))) {
+			$error = sprintf($errFmt, $url, $this->errHandler->message);
+		}
+
+		if (is_resource($fh)) {
+			fclose($fh);
+		}
+		$this->errHandler->stop();
+		return empty($error);
+	}
+
+	/**
+	 * Verifies the downloaded file and saves it to the target location
+	 *
+	 * @param string $version The composer version downloaded
+	 * @param string $signature The digital signature to check
+	 * @param null|string $error Set by method on failure
+	 *
+	 * @return bool If the operation succeeded
+	 */
+	protected function verifyAndSave($version, $signature, &$error)
+	{
+		$error = '';
+
+		if (!$this->validatePhar($this->tmpFile, $pharError)) {
+			$error = 'The download is corrupt: '.$pharError;
+
+		} elseif (!$this->verifySignature($version, $signature, $this->tmpFile)) {
+			$error = 'Signature mismatch, could not verify the phar file integrity';
+
+		} else {
+			$this->errHandler->start();
+
+			if (!rename($this->tmpFile, $this->target)) {
+				$error = sprintf('Could not write to file "%s": %s', $this->target, $this->errHandler->message);
+			}
+			chmod($this->target, 0755);
+			$this->errHandler->stop();
+		}
+
+		return empty($error);
+	}
+
+	/**
+	 * Parses an array of version data to match the required channel
+	 *
+	 * @param array $data Downloaded version data
+	 * @param mixed $channel Version channel to use
+	 * @param false|string $version Set by method
+	 * @param mixed $url The versioned url, set by method
+	 */
+	protected function parseVersionData(array $data, $channel, &$version, &$url)
+	{
+		foreach ($data[$channel] as $candidate) {
+			if ($candidate['min-php'] <= PHP_VERSION_ID) {
+				$version = $candidate['version'];
+				$url = $this->baseUrl.$candidate['path'];
+				break;
+			}
+		}
+
+		if (!$version) {
+			$error = sprintf(
+				'None of the %d %s version(s) of Composer matches your PHP version (%s / ID: %d)',
+				count($data[$channel]),
+				$channel,
+				PHP_VERSION,
+				PHP_VERSION_ID
+			);
+			throw new RuntimeException($error);
+		}
+	}
+
+	/**
+	 * Downloads the digital signature of required phar file
+	 *
+	 * @param string $url The signature url
+	 * @param null|string $signature Set by method on success
+	 *
+	 * @return bool If the download succeeded
+	 */
+	protected function getSignature($url, &$signature)
+	{
+		if (!$result = $this->disableTls) {
+			$signature = $this->httpClient->get($url);
+
+			if ($signature) {
+				$signature = json_decode($signature, true);
+				$signature = base64_decode($signature['sha384']);
+				$result = true;
+			}
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Verifies the signature of the downloaded phar
+	 *
+	 * @param string $version The composer versione
+	 * @param string $signature The downloaded digital signature
+	 * @param string $file The temp phar file
+	 *
+	 * @return bool If the operation succeeded
+	 */
+	protected function verifySignature($version, $signature, $file)
+	{
+		if (!$result = $this->disableTls) {
+			$path = preg_match('{^[0-9a-f]{40}$}', $version) ? $this->pubKeys['dev'] : $this->pubKeys['tags'];
+			$pubkeyid = openssl_pkey_get_public('file://'.$path);
+
+			$result = 1 === openssl_verify(
+				file_get_contents($file),
+				$signature,
+				$pubkeyid,
+				$this->algo
+			);
+
+			openssl_free_key($pubkeyid);
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Validates the downloaded phar file
+	 *
+	 * @param string $pharFile The temp phar file
+	 * @param null|string $error Set by method on failure
+	 *
+	 * @return bool If the operation succeeded
+	 */
+	protected function validatePhar($pharFile, &$error)
+	{
+		if (ini_get('phar.readonly')) {
+			return true;
+		}
+
+		try {
+			// Test the phar validity
+			$phar = new Phar($pharFile);
+			// Free the variable to unlock the file
+			unset($phar);
+			$result = true;
+
+		} catch (Exception $e) {
+			if (!$e instanceof UnexpectedValueException && !$e instanceof PharException) {
+				throw $e;
+			}
+			$error = $e->getMessage();
+			$result = false;
+		}
+		return $result;
+	}
+
+	/**
+	 * Returns a string representation of the last json error
+	 *
+	 * @return string The error string or code
+	 */
+	protected function getJsonError()
+	{
+		if (function_exists('json_last_error_msg')) {
+			return json_last_error_msg();
+		} else {
+			return 'json_last_error = '.json_last_error();
+		}
+	}
+
+	/**
+	 * Cleans up resources at the end of the installation
+	 *
+	 * @param bool $result If the installation succeeded
+	 */
+	protected function cleanUp($result)
+	{
+		if (!$result) {
+			// Output buffered errors
+			if ($this->quiet) {
+				$this->outputErrors();
+			}
+			// Clean up stuff we created
+			$this->uninstall();
+		}
+	}
+
+	/**
+	 * Outputs unique errors when in quiet mode
+	 *
+	 */
+	protected function outputErrors()
+	{
+		$errors = explode(PHP_EOL, ob_get_clean());
+		$shown = array();
+
+		foreach ($errors as $error) {
+			if ($error && !in_array($error, $shown)) {
+				out($error, 'error');
+				$shown[] = $error;
+			}
+		}
+	}
+
+	/**
+	 * Uninstalls newly-created files and directories on failure
+	 *
+	 */
+	protected function uninstall()
+	{
+		foreach (array_reverse($this->installs) as $target) {
+			if (is_file($target)) {
+				@unlink($target);
+			} elseif (is_dir($target)) {
+				@rmdir($target);
+			}
+		}
+
+		if (file_exists($this->tmpFile)) {
+			@unlink($this->tmpFile);
+		}
+	}
+
+	public static function getPKDev()
+	{
+		return <<<PKDEV
 -----BEGIN PUBLIC KEY-----
 MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAnBDHjZS6e0ZMoK3xTD7f
 FNCzlXjX/Aie2dit8QXA03pSrOTbaMnxON3hUL47Lz3g1SC6YJEMVHr0zYq4elWi
@@ -1139,11 +1139,11 @@ 
 wSEuAuRm+pRqi8BRnQ/GKUcCAwEAAQ==
 -----END PUBLIC KEY-----
 PKDEV;
-    }
+	}
 
-    public static function getPKTags()
-    {
-        return <<<PKTAGS
+	public static function getPKTags()
+	{
+		return <<<PKTAGS
 -----BEGIN PUBLIC KEY-----
 MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA0Vi/2K6apCVj76nCnCl2
 MQUPdK+A9eqkYBacXo2wQBYmyVlXm2/n/ZsX6pCLYPQTHyr5jXbkQzBw8SKqPdlh
@@ -1159,453 +1159,453 @@ 
 RGv89BPD+2DLnJysngsvVaUCAwEAAQ==
 -----END PUBLIC KEY-----
 PKTAGS;
-    }
+	}
 }
 
 class ErrorHandler
 {
-    public $message;
-    protected $active;
-
-    /**
-     * Handle php errors
-     *
-     * @param mixed $code The error code
-     * @param mixed $msg The error message
-     */
-    public function handleError($code, $msg)
-    {
-        if ($this->message) {
-            $this->message .= PHP_EOL;
-        }
-        $this->message .= preg_replace('{^file_get_contents\(.*?\): }', '', $msg);
-    }
-
-    /**
-     * Starts error-handling if not already active
-     *
-     * Any message is cleared
-     */
-    public function start()
-    {
-        if (!$this->active) {
-            set_error_handler(array($this, 'handleError'));
-            $this->active = true;
-        }
-        $this->message = '';
-    }
-
-    /**
-     * Stops error-handling if active
-     *
-     * Any message is preserved until the next call to start()
-     */
-    public function stop()
-    {
-        if ($this->active) {
-            restore_error_handler();
-            $this->active = false;
-        }
-    }
+	public $message;
+	protected $active;
+
+	/**
+	 * Handle php errors
+	 *
+	 * @param mixed $code The error code
+	 * @param mixed $msg The error message
+	 */
+	public function handleError($code, $msg)
+	{
+		if ($this->message) {
+			$this->message .= PHP_EOL;
+		}
+		$this->message .= preg_replace('{^file_get_contents\(.*?\): }', '', $msg);
+	}
+
+	/**
+	 * Starts error-handling if not already active
+	 *
+	 * Any message is cleared
+	 */
+	public function start()
+	{
+		if (!$this->active) {
+			set_error_handler(array($this, 'handleError'));
+			$this->active = true;
+		}
+		$this->message = '';
+	}
+
+	/**
+	 * Stops error-handling if active
+	 *
+	 * Any message is preserved until the next call to start()
+	 */
+	public function stop()
+	{
+		if ($this->active) {
+			restore_error_handler();
+			$this->active = false;
+		}
+	}
 }
 
 class NoProxyPattern
 {
-    private $composerInNoProxy = false;
-    private $rulePorts = array();
-
-    public function __construct($pattern)
-    {
-        $rules = preg_split('{[\s,]+}', $pattern, null, PREG_SPLIT_NO_EMPTY);
-
-        if ($matches = preg_grep('{getcomposer\.org(?::\d+)?}i', $rules)) {
-            $this->composerInNoProxy = true;
-
-            foreach ($matches as $match) {
-                if (strpos($match, ':') !== false) {
-                    list(, $port) = explode(':', $match);
-                    $this->rulePorts[] = (int) $port;
-                }
-            }
-        }
-    }
-
-    /**
-     * Returns true if NO_PROXY contains getcomposer.org
-     *
-     * @param string $url http(s)://getcomposer.org
-     *
-     * @return bool
-     */
-    public function test($url)
-    {
-        if (!$this->composerInNoProxy) {
-            return false;
-        }
-
-        if (empty($this->rulePorts)) {
-            return true;
-        }
-
-        if (strpos($url, 'http://') === 0) {
-            $port = 80;
-        } else {
-            $port = 443;
-        }
-
-        return in_array($port, $this->rulePorts);
-    }
+	private $composerInNoProxy = false;
+	private $rulePorts = array();
+
+	public function __construct($pattern)
+	{
+		$rules = preg_split('{[\s,]+}', $pattern, null, PREG_SPLIT_NO_EMPTY);
+
+		if ($matches = preg_grep('{getcomposer\.org(?::\d+)?}i', $rules)) {
+			$this->composerInNoProxy = true;
+
+			foreach ($matches as $match) {
+				if (strpos($match, ':') !== false) {
+					list(, $port) = explode(':', $match);
+					$this->rulePorts[] = (int) $port;
+				}
+			}
+		}
+	}
+
+	/**
+	 * Returns true if NO_PROXY contains getcomposer.org
+	 *
+	 * @param string $url http(s)://getcomposer.org
+	 *
+	 * @return bool
+	 */
+	public function test($url)
+	{
+		if (!$this->composerInNoProxy) {
+			return false;
+		}
+
+		if (empty($this->rulePorts)) {
+			return true;
+		}
+
+		if (strpos($url, 'http://') === 0) {
+			$port = 80;
+		} else {
+			$port = 443;
+		}
+
+		return in_array($port, $this->rulePorts);
+	}
 }
 
 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) {
-            if (PHP_VERSION_ID < 50600) {
-                $this->options['ssl']['SNI_server_name'] = parse_url($url, PHP_URL_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',
-            'AES128-SHA256',
-            'AES256-SHA256',
-            'AES128-SHA',
-            'AES256-SHA',
-            'AES',
-            'CAMELLIA',
-            'DES-CBC3-SHA',
-            '!aNULL',
-            '!eNULL',
-            '!EXPORT',
-            '!DES',
-            '!RC4',
-            '!MD5',
-            '!PSK',
-            '!aECDH',
-            '!EDH-DSS-DES-CBC3-SHA',
-            '!EDH-RSA-DES-CBC3-SHA',
-            '!KRB5-DES-CBC3-SHA',
-        ));
-
-        /**
-         * 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 = $this->options;
-
-        // Handle HTTP_PROXY/http_proxy on CLI only for security reasons
-        if ((PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') && (!empty($_SERVER['HTTP_PROXY']) || !empty($_SERVER['http_proxy']))) {
-            $proxy = parse_url(!empty($_SERVER['http_proxy']) ? $_SERVER['http_proxy'] : $_SERVER['HTTP_PROXY']);
-        }
-
-        // Prefer CGI_HTTP_PROXY if available
-        if (!empty($_SERVER['CGI_HTTP_PROXY'])) {
-            $proxy = parse_url($_SERVER['CGI_HTTP_PROXY']);
-        }
-
-        // Override with HTTPS proxy if present and URL is https
-        if (preg_match('{^https://}i', $url) && (!empty($_SERVER['HTTPS_PROXY']) || !empty($_SERVER['https_proxy']))) {
-            $proxy = parse_url(!empty($_SERVER['https_proxy']) ? $_SERVER['https_proxy'] : $_SERVER['HTTPS_PROXY']);
-        }
-
-        // Remove proxy if URL matches no_proxy directive
-        if (!empty($_SERVER['NO_PROXY']) || !empty($_SERVER['no_proxy']) && parse_url($url, PHP_URL_HOST)) {
-            $pattern = new NoProxyPattern(!empty($_SERVER['no_proxy']) ? $_SERVER['no_proxy'] : $_SERVER['NO_PROXY']);
-            if ($pattern->test($url)) {
-                unset($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' => $proxyURL,
-            );
-
-            // set request_fulluri, depending on default requirements and the environment
-            switch (parse_url($url, PHP_URL_SCHEME)) {
-                case 'http': // default is true for HTTP, check if explicitly disabled
-                    $reqFullUriEnv = getenv('HTTP_PROXY_REQUEST_FULLURI');
-                    if ($reqFullUriEnv === false || $reqFullUriEnv === '' || (strtolower($reqFullUriEnv) !== 'false' && (bool) $reqFullUriEnv)) {
-                        $options['http']['request_fulluri'] = true;
-                    }
-                    break;
-                case 'https': // default is false for HTTPS, check if explicitly enabled
-                    $reqFullUriEnv = getenv('HTTPS_PROXY_REQUEST_FULLURI');
-                    if (strtolower($reqFullUriEnv) !== 'false' && (bool) $reqFullUriEnv) {
-                        $options['http']['request_fulluri'] = true;
-                    }
-                    break;
-            }
-
-            // handle proxy auth if present
-            if (isset($proxy['user'])) {
-                $auth = rawurldecode($proxy['user']);
-                if (isset($proxy['pass'])) {
-                    $auth .= ':' . rawurldecode($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;
-        $options['http']['timeout'] = 600;
-
-        return stream_context_create($options);
-    }
-
-    /**
-    * 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.
-    */
-    public static 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($envCertFile) && validateCaFile(file_get_contents($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) && validateCaFile(file_get_contents($configured))) {
-            return $caPath = $configured;
-        }
-
-        $configured = ini_get('openssl.capath');
-        if ($configured && is_dir($configured) && is_readable($configured)) {
-            return $caPath = $configured;
-        }
-
-        $caBundlePaths = array(
-            '/etc/pki/tls/certs/ca-bundle.crt', // Fedora, RHEL, CentOS (ca-certificates package)
-            '/etc/ssl/certs/ca-certificates.crt', // Debian, Ubuntu, Gentoo, Arch Linux (ca-certificates package)
-            '/etc/ssl/ca-bundle.pem', // SUSE, openSUSE (ca-certificates package)
-            '/usr/local/share/certs/ca-root-nss.crt', // FreeBSD (ca_root_nss_package)
-            '/usr/ssl/certs/ca-bundle.crt', // Cygwin
-            '/opt/local/share/curl/curl-ca-bundle.crt', // OS X macports, curl-ca-bundle package
-            '/usr/local/share/curl/curl-ca-bundle.crt', // Default cURL CA bunde path (without --with-ca-bundle option)
-            '/usr/share/ssl/certs/ca-bundle.crt', // Really old RedHat?
-            '/etc/ssl/cert.pem', // OpenBSD
-            '/usr/local/etc/ssl/cert.pem', // FreeBSD 10.x
-            '/usr/local/etc/openssl/cert.pem', // OS X homebrew, openssl package
-            '/usr/local/etc/openssl@1.1/cert.pem', // OS X homebrew, openssl@1.1 package
-        );
-
-        foreach ($caBundlePaths as $caBundle) {
-            if (@is_readable($caBundle) && validateCaFile(file_get_contents($caBundle))) {
-                return $caPath = $caBundle;
-            }
-        }
-
-        foreach ($caBundlePaths as $caBundle) {
-            $caBundle = dirname($caBundle);
-            if (is_dir($caBundle) && glob($caBundle.'/*')) {
-                return $caPath = $caBundle;
-            }
-        }
-
-        return $caPath = false;
-    }
-
-    public static function getPackagedCaFile()
-    {
-        return <<<CACERT
+	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) {
+			if (PHP_VERSION_ID < 50600) {
+				$this->options['ssl']['SNI_server_name'] = parse_url($url, PHP_URL_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',
+			'AES128-SHA256',
+			'AES256-SHA256',
+			'AES128-SHA',
+			'AES256-SHA',
+			'AES',
+			'CAMELLIA',
+			'DES-CBC3-SHA',
+			'!aNULL',
+			'!eNULL',
+			'!EXPORT',
+			'!DES',
+			'!RC4',
+			'!MD5',
+			'!PSK',
+			'!aECDH',
+			'!EDH-DSS-DES-CBC3-SHA',
+			'!EDH-RSA-DES-CBC3-SHA',
+			'!KRB5-DES-CBC3-SHA',
+		));
+
+		/**
+		 * 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 = $this->options;
+
+		// Handle HTTP_PROXY/http_proxy on CLI only for security reasons
+		if ((PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') && (!empty($_SERVER['HTTP_PROXY']) || !empty($_SERVER['http_proxy']))) {
+			$proxy = parse_url(!empty($_SERVER['http_proxy']) ? $_SERVER['http_proxy'] : $_SERVER['HTTP_PROXY']);
+		}
+
+		// Prefer CGI_HTTP_PROXY if available
+		if (!empty($_SERVER['CGI_HTTP_PROXY'])) {
+			$proxy = parse_url($_SERVER['CGI_HTTP_PROXY']);
+		}
+
+		// Override with HTTPS proxy if present and URL is https
+		if (preg_match('{^https://}i', $url) && (!empty($_SERVER['HTTPS_PROXY']) || !empty($_SERVER['https_proxy']))) {
+			$proxy = parse_url(!empty($_SERVER['https_proxy']) ? $_SERVER['https_proxy'] : $_SERVER['HTTPS_PROXY']);
+		}
+
+		// Remove proxy if URL matches no_proxy directive
+		if (!empty($_SERVER['NO_PROXY']) || !empty($_SERVER['no_proxy']) && parse_url($url, PHP_URL_HOST)) {
+			$pattern = new NoProxyPattern(!empty($_SERVER['no_proxy']) ? $_SERVER['no_proxy'] : $_SERVER['NO_PROXY']);
+			if ($pattern->test($url)) {
+				unset($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' => $proxyURL,
+			);
+
+			// set request_fulluri, depending on default requirements and the environment
+			switch (parse_url($url, PHP_URL_SCHEME)) {
+				case 'http': // default is true for HTTP, check if explicitly disabled
+					$reqFullUriEnv = getenv('HTTP_PROXY_REQUEST_FULLURI');
+					if ($reqFullUriEnv === false || $reqFullUriEnv === '' || (strtolower($reqFullUriEnv) !== 'false' && (bool) $reqFullUriEnv)) {
+						$options['http']['request_fulluri'] = true;
+					}
+					break;
+				case 'https': // default is false for HTTPS, check if explicitly enabled
+					$reqFullUriEnv = getenv('HTTPS_PROXY_REQUEST_FULLURI');
+					if (strtolower($reqFullUriEnv) !== 'false' && (bool) $reqFullUriEnv) {
+						$options['http']['request_fulluri'] = true;
+					}
+					break;
+			}
+
+			// handle proxy auth if present
+			if (isset($proxy['user'])) {
+				$auth = rawurldecode($proxy['user']);
+				if (isset($proxy['pass'])) {
+					$auth .= ':' . rawurldecode($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;
+		$options['http']['timeout'] = 600;
+
+		return stream_context_create($options);
+	}
+
+	/**
+	 * 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.
+	 */
+	public static 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($envCertFile) && validateCaFile(file_get_contents($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) && validateCaFile(file_get_contents($configured))) {
+			return $caPath = $configured;
+		}
+
+		$configured = ini_get('openssl.capath');
+		if ($configured && is_dir($configured) && is_readable($configured)) {
+			return $caPath = $configured;
+		}
+
+		$caBundlePaths = array(
+			'/etc/pki/tls/certs/ca-bundle.crt', // Fedora, RHEL, CentOS (ca-certificates package)
+			'/etc/ssl/certs/ca-certificates.crt', // Debian, Ubuntu, Gentoo, Arch Linux (ca-certificates package)
+			'/etc/ssl/ca-bundle.pem', // SUSE, openSUSE (ca-certificates package)
+			'/usr/local/share/certs/ca-root-nss.crt', // FreeBSD (ca_root_nss_package)
+			'/usr/ssl/certs/ca-bundle.crt', // Cygwin
+			'/opt/local/share/curl/curl-ca-bundle.crt', // OS X macports, curl-ca-bundle package
+			'/usr/local/share/curl/curl-ca-bundle.crt', // Default cURL CA bunde path (without --with-ca-bundle option)
+			'/usr/share/ssl/certs/ca-bundle.crt', // Really old RedHat?
+			'/etc/ssl/cert.pem', // OpenBSD
+			'/usr/local/etc/ssl/cert.pem', // FreeBSD 10.x
+			'/usr/local/etc/openssl/cert.pem', // OS X homebrew, openssl package
+			'/usr/local/etc/openssl@1.1/cert.pem', // OS X homebrew, openssl@1.1 package
+		);
+
+		foreach ($caBundlePaths as $caBundle) {
+			if (@is_readable($caBundle) && validateCaFile(file_get_contents($caBundle))) {
+				return $caPath = $caBundle;
+			}
+		}
+
+		foreach ($caBundlePaths as $caBundle) {
+			$caBundle = dirname($caBundle);
+			if (is_dir($caBundle) && glob($caBundle.'/*')) {
+				return $caPath = $caBundle;
+			}
+		}
+
+		return $caPath = false;
+	}
+
+	public static function getPackagedCaFile()
+	{
+		return <<<CACERT
 ##
 ## Bundle of CA Root Certificates
 ##
@@ -5073,6 +5073,6 @@ 
 kcpG2om3PVODLAgfi49T3f+sHw==
 -----END CERTIFICATE-----
 CACERT;
-    }
+	}
 
 }

Spacing +75 added lines, -75 removed lines

@@ -22,7 +22,7 @@ 
 {
     ini_set('display_errors', 1);
 
-    if (extension_loaded('uopz') && !(ini_get('uopz.disable') || ini_get('uopz.exit'))) {
+    if (extension_loaded('uopz') && ! (ini_get('uopz.disable') || ini_get('uopz.exit'))) {
         // uopz works at opcode level and disables exit calls
         if (function_exists('uopz_allow_exit')) {
             @uopz_allow_exit(true);
@@ -66,7 +66,7 @@ 
     $filename   = getOptValue('--filename', $argv, 'composer.phar');
     $cafile     = getOptValue('--cafile', $argv, false);
 
-    if (!checkParams($installDir, $version, $cafile)) {
+    if ( ! checkParams($installDir, $version, $cafile)) {
         exit(1);
     }
 
@@ -183,7 +183,7 @@ 
 {
     $result = true;
 
-    if (false !== $installDir && !is_dir($installDir)) {
+    if (false !== $installDir && ! is_dir($installDir)) {
         out("The defined install dir ({$installDir}) does not exist.", 'info');
         $result = false;
     }
@@ -193,7 +193,7 @@ 
         $result = false;
     }
 
-    if (false !== $cafile && (!file_exists($cafile) || !is_readable($cafile))) {
+    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');
         $result = false;
     }
@@ -217,19 +217,19 @@ 
     getPlatformIssues($errors, $warnings, $install);
 
     // Make openssl warning an error if tls has not been specifically disabled
-    if (isset($warnings['openssl']) && !$disableTls) {
+    if (isset($warnings['openssl']) && ! $disableTls) {
         $errors['openssl'] = $warnings['openssl'];
         unset($warnings['openssl']);
     }
 
-    if (!empty($errors)) {
+    if ( ! empty($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) {
+    if (empty($warnings) && ! $quiet) {
         out('All settings correct for using Composer', 'success');
     }
     return true;
@@ -250,7 +250,7 @@ 
     $warnings = array();
 
     if ($iniPath = php_ini_loaded_file()) {
-        $iniMessage = PHP_EOL.'The php.ini used by your command-line PHP is: ' . $iniPath;
+        $iniMessage = PHP_EOL.'The php.ini used by your command-line PHP is: '.$iniPath;
     } else {
         $iniMessage = PHP_EOL.'A php.ini file does not exist. You will have to create one.';
     }
@@ -268,7 +268,7 @@ 
     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'))) {
+        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):',
@@ -278,42 +278,42 @@ 
         }
     }
 
-    if (!function_exists('json_decode')) {
+    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')) {
+    if ( ! extension_loaded('Phar')) {
         $errors['phar'] = array(
             'The phar extension is missing.',
             'Install it or recompile php without --disable-phar'
         );
     }
 
-    if (!extension_loaded('filter')) {
+    if ( ! extension_loaded('filter')) {
         $errors['filter'] = array(
             'The filter extension is missing.',
             'Install it or recompile php without --disable-filter'
         );
     }
 
-    if (!extension_loaded('hash')) {
+    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')) {
+    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')) {
+    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`:',
@@ -345,7 +345,7 @@ 
         );
     }
 
-    if (!extension_loaded('openssl')) {
+    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'
@@ -364,7 +364,7 @@ 
         );
     }
 
-    if (!defined('HHVM_VERSION') && !extension_loaded('apcu') && ini_get('apc.enable_cli')) {
+    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`:',
@@ -373,7 +373,7 @@ 
         );
     }
 
-    if (!$install && extension_loaded('xdebug')) {
+    if ( ! $install && 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.'
@@ -389,7 +389,7 @@ 
         }
     }
 
-    if (!extension_loaded('zlib')) {
+    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',
@@ -407,7 +407,7 @@ 
         );
     }
 
-    if (extension_loaded('uopz') && !(ini_get('uopz.disable') || ini_get('uopz.exit'))) {
+    if (extension_loaded('uopz') && ! (ini_get('uopz.disable') || ini_get('uopz.exit'))) {
         $warnings['uopz'] = array(
             'The uopz extension ignores exit calls and may not work with all Composer commands.',
             'Disabling it when using Composer is recommended.'
@@ -445,7 +445,7 @@ 
         $warnings[$key] = PHP_EOL.implode(PHP_EOL, $value);
     }
 
-    return !empty($errors) || !empty($warnings);
+    return ! empty($errors) || ! empty($warnings);
 }
 
 
@@ -469,7 +469,7 @@ 
  */
 function showWarnings($warnings)
 {
-    if (!empty($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);
@@ -522,7 +522,7 @@ 
 {
     $home = getenv('COMPOSER_HOME');
 
-    if (!$home) {
+    if ( ! $home) {
         $userDir = getUserDir();
 
         if (defined('PHP_WINDOWS_VERSION_MAJOR')) {
@@ -530,9 +530,9 @@ 
         } else {
             $home = $userDir.'/.composer';
 
-            if (!is_dir($home) && useXdg()) {
+            if ( ! is_dir($home) && useXdg()) {
                 // XDG Base Directory Specifications
-                if (!($xdgConfig = getenv('XDG_CONFIG_HOME'))) {
+                if ( ! ($xdgConfig = getenv('XDG_CONFIG_HOME'))) {
                     $xdgConfig = $userDir.'/.config';
                 }
                 $home = $xdgConfig.'/composer';
@@ -553,7 +553,7 @@ 
     $userEnv = defined('PHP_WINDOWS_VERSION_MAJOR') ? 'APPDATA' : 'HOME';
     $userDir = getenv($userEnv);
 
-    if (!$userDir) {
+    if ( ! $userDir) {
         throw new RuntimeException('The '.$userEnv.' or COMPOSER_HOME environment variable must be set for composer to run correctly');
     }
 
@@ -582,7 +582,7 @@ 
         || (PHP_VERSION_ID >= 50400 && PHP_VERSION_ID < 50422)
         || (PHP_VERSION_ID >= 50500 && PHP_VERSION_ID < 50506)
     ) {
-        return !empty($contents);
+        return ! empty($contents);
     }
 
     return (bool) openssl_x509_parse($contents);
@@ -639,9 +639,9 @@ 
             $this->httpClient = new HttpClient($this->disableTls, $this->cafile);
             $result = $this->install($version, $channel);
 
-            if ($result && $channel !== 'stable' && !$version && defined('PHP_BINARY')) {
+            if ($result && $channel !== 'stable' && ! $version && defined('PHP_BINARY')) {
                 $null = (defined('PHP_WINDOWS_VERSION_MAJOR') ? 'NUL' : '/dev/null');
-                @exec(escapeshellarg(PHP_BINARY) .' '.escapeshellarg($this->target).' self-update --'.$channel.' --set-channel-only -q > '.$null.' 2> '.$null, $output);
+                @exec(escapeshellarg(PHP_BINARY).' '.escapeshellarg($this->target).' self-update --'.$channel.' --set-channel-only -q > '.$null.' 2> '.$null, $output);
             }
         } catch (Exception $e) {
             $result = false;
@@ -652,7 +652,7 @@ 
 
         if (isset($e)) {
             // Rethrow anything that is not a RuntimeException
-            if (!$e instanceof RuntimeException) {
+            if ( ! $e instanceof RuntimeException) {
                 throw $e;
             }
             out($e->getMessage(), 'error');
@@ -672,7 +672,7 @@ 
         $this->installPath = (is_dir($installDir) ? rtrim($installDir, '/').'/' : '').$filename;
         $installDir = realpath($installDir) ? realpath($installDir) : getcwd();
 
-        if (!is_writeable($installDir)) {
+        if ( ! is_writeable($installDir)) {
             throw new RuntimeException('The installation directory "'.$installDir.'" is not writable');
         }
 
@@ -693,7 +693,7 @@ 
             return;
         }
 
-        if (!in_array('sha384', array_map('strtolower', openssl_get_md_methods()))) {
+        if ( ! in_array('sha384', array_map('strtolower', openssl_get_md_methods()))) {
             throw new RuntimeException('SHA384 is not supported by your openssl extension');
         }
 
@@ -705,7 +705,7 @@ 
             'tags' => $this->installKey(self::getPKTags(), $home, 'keys.tags.pub')
         );
 
-        if (empty($this->cafile) && !HttpClient::getSystemCaRootBundlePath()) {
+        if (empty($this->cafile) && ! HttpClient::getSystemCaRootBundlePath()) {
             $this->cafile = $this->installKey(HttpClient::getPackagedCaFile(), $home, 'cacert.pem');
         }
     }
@@ -720,10 +720,10 @@ 
     {
         $home = getHomeDir();
 
-        if (!is_dir($home)) {
+        if ( ! is_dir($home)) {
             $this->errHandler->start();
 
-            if (!mkdir($home, 0777, true)) {
+            if ( ! mkdir($home, 0777, true)) {
                 throw new RuntimeException(sprintf(
                     'Unable to create Composer home directory "%s": %s',
                     $home,
@@ -757,11 +757,11 @@ 
 
         $this->errHandler->stop();
 
-        if (!$write) {
+        if ( ! $write) {
             throw new RuntimeException(sprintf('Unable to write %s to: %s', $filename, $path));
         }
 
-        if (!$installed) {
+        if ( ! $installed) {
             $this->installs[] = $target;
         }
 
@@ -784,23 +784,23 @@ 
         $infoType = 'info';
 
         while ($retries--) {
-            if (!$this->quiet) {
+            if ( ! $this->quiet) {
                 out($infoMsg, $infoType);
                 $infoMsg = 'Retrying...';
                 $infoType = 'error';
             }
 
-            if (!$this->getVersion($channel, $version, $url, $error)) {
+            if ( ! $this->getVersion($channel, $version, $url, $error)) {
                 out($error, 'error');
                 continue;
             }
 
-            if (!$this->downloadToTmp($url, $signature, $error)) {
+            if ( ! $this->downloadToTmp($url, $signature, $error)) {
                 out($error, 'error');
                 continue;
             }
 
-            if (!$this->verifyAndSave($version, $signature, $error)) {
+            if ( ! $this->verifyAndSave($version, $signature, $error)) {
                 out($error, 'error');
                 continue;
             }
@@ -809,7 +809,7 @@ 
             break;
         }
 
-        if (!$this->quiet) {
+        if ( ! $this->quiet) {
             if ($result) {
                 out(PHP_EOL."Composer (version {$version}) successfully installed to: {$this->target}", 'success');
                 out("Use it: php {$this->installPath}", 'info');
@@ -865,12 +865,12 @@ 
         $url = $this->baseUrl.'/versions';
         $errFmt = 'The "%s" file could not be %s: %s';
 
-        if (!$json = $this->httpClient->get($url)) {
+        if ( ! $json = $this->httpClient->get($url)) {
             $error = sprintf($errFmt, $url, 'downloaded', $this->errHandler->message);
             return false;
         }
 
-        if (!$data = json_decode($json, true)) {
+        if ( ! $data = json_decode($json, true)) {
             $error = sprintf($errFmt, $url, 'json-decoded', $this->getJsonError());
             return false;
         }
@@ -893,13 +893,13 @@ 
         $sigUrl = $url.'.sig';
         $this->errHandler->start();
 
-        if (!$fh = fopen($this->tmpFile, 'w')) {
+        if ( ! $fh = fopen($this->tmpFile, 'w')) {
             $error = sprintf('Could not create file "%s": %s', $this->tmpFile, $this->errHandler->message);
 
-        } elseif (!$this->getSignature($sigUrl, $signature)) {
+        } elseif ( ! $this->getSignature($sigUrl, $signature)) {
             $error = sprintf($errFmt, $sigUrl, $this->errHandler->message);
 
-        } elseif (!fwrite($fh, $this->httpClient->get($url))) {
+        } elseif ( ! fwrite($fh, $this->httpClient->get($url))) {
             $error = sprintf($errFmt, $url, $this->errHandler->message);
         }
 
@@ -923,16 +923,16 @@ 
     {
         $error = '';
 
-        if (!$this->validatePhar($this->tmpFile, $pharError)) {
+        if ( ! $this->validatePhar($this->tmpFile, $pharError)) {
             $error = 'The download is corrupt: '.$pharError;
 
-        } elseif (!$this->verifySignature($version, $signature, $this->tmpFile)) {
+        } elseif ( ! $this->verifySignature($version, $signature, $this->tmpFile)) {
             $error = 'Signature mismatch, could not verify the phar file integrity';
 
         } else {
             $this->errHandler->start();
 
-            if (!rename($this->tmpFile, $this->target)) {
+            if ( ! rename($this->tmpFile, $this->target)) {
                 $error = sprintf('Could not write to file "%s": %s', $this->target, $this->errHandler->message);
             }
             chmod($this->target, 0755);
@@ -960,7 +960,7 @@ 
             }
         }
 
-        if (!$version) {
+        if ( ! $version) {
             $error = sprintf(
                 'None of the %d %s version(s) of Composer matches your PHP version (%s / ID: %d)',
                 count($data[$channel]),
@@ -982,7 +982,7 @@ 
      */
     protected function getSignature($url, &$signature)
     {
-        if (!$result = $this->disableTls) {
+        if ( ! $result = $this->disableTls) {
             $signature = $this->httpClient->get($url);
 
             if ($signature) {
@@ -1006,7 +1006,7 @@ 
      */
     protected function verifySignature($version, $signature, $file)
     {
-        if (!$result = $this->disableTls) {
+        if ( ! $result = $this->disableTls) {
             $path = preg_match('{^[0-9a-f]{40}$}', $version) ? $this->pubKeys['dev'] : $this->pubKeys['tags'];
             $pubkeyid = openssl_pkey_get_public('file://'.$path);
 
@@ -1045,7 +1045,7 @@ 
             $result = true;
 
         } catch (Exception $e) {
-            if (!$e instanceof UnexpectedValueException && !$e instanceof PharException) {
+            if ( ! $e instanceof UnexpectedValueException && ! $e instanceof PharException) {
                 throw $e;
             }
             $error = $e->getMessage();
@@ -1075,7 +1075,7 @@ 
      */
     protected function cleanUp($result)
     {
-        if (!$result) {
+        if ( ! $result) {
             // Output buffered errors
             if ($this->quiet) {
                 $this->outputErrors();
@@ -1095,7 +1095,7 @@ 
         $shown = array();
 
         foreach ($errors as $error) {
-            if ($error && !in_array($error, $shown)) {
+            if ($error && ! in_array($error, $shown)) {
                 out($error, 'error');
                 $shown[] = $error;
             }
@@ -1188,7 +1188,7 @@ 
      */
     public function start()
     {
-        if (!$this->active) {
+        if ( ! $this->active) {
             set_error_handler(array($this, 'handleError'));
             $this->active = true;
         }
@@ -1239,7 +1239,7 @@ 
      */
     public function test($url)
     {
-        if (!$this->composerInNoProxy) {
+        if ( ! $this->composerInNoProxy) {
             return false;
         }
 
@@ -1266,9 +1266,9 @@ 
     {
         $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 (' .$cafile. ') was not valid or could not be read.');
+            if ( ! empty($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);
@@ -1300,7 +1300,7 @@ 
                     $result = file_get_contents('compress.zlib://data:application/octet-stream;base64,'.base64_encode($result));
                 }
 
-                if (!$result) {
+                if ( ! $result) {
                     throw new RuntimeException('Failed to decode zlib stream');
                 }
             }
@@ -1385,7 +1385,7 @@ 
          * Attempt to find a local cafile or throw an exception.
          * The user may go download one if this occurs.
          */
-        if (!$cafile) {
+        if ( ! $cafile) {
             $cafile = self::getSystemCaRootBundlePath();
         }
         if (is_dir($cafile)) {
@@ -1420,34 +1420,34 @@ 
         $options = $this->options;
 
         // Handle HTTP_PROXY/http_proxy on CLI only for security reasons
-        if ((PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') && (!empty($_SERVER['HTTP_PROXY']) || !empty($_SERVER['http_proxy']))) {
-            $proxy = parse_url(!empty($_SERVER['http_proxy']) ? $_SERVER['http_proxy'] : $_SERVER['HTTP_PROXY']);
+        if ((PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') && ( ! empty($_SERVER['HTTP_PROXY']) || ! empty($_SERVER['http_proxy']))) {
+            $proxy = parse_url( ! empty($_SERVER['http_proxy']) ? $_SERVER['http_proxy'] : $_SERVER['HTTP_PROXY']);
         }
 
         // Prefer CGI_HTTP_PROXY if available
-        if (!empty($_SERVER['CGI_HTTP_PROXY'])) {
+        if ( ! empty($_SERVER['CGI_HTTP_PROXY'])) {
             $proxy = parse_url($_SERVER['CGI_HTTP_PROXY']);
         }
 
         // Override with HTTPS proxy if present and URL is https
-        if (preg_match('{^https://}i', $url) && (!empty($_SERVER['HTTPS_PROXY']) || !empty($_SERVER['https_proxy']))) {
-            $proxy = parse_url(!empty($_SERVER['https_proxy']) ? $_SERVER['https_proxy'] : $_SERVER['HTTPS_PROXY']);
+        if (preg_match('{^https://}i', $url) && ( ! empty($_SERVER['HTTPS_PROXY']) || ! empty($_SERVER['https_proxy']))) {
+            $proxy = parse_url( ! empty($_SERVER['https_proxy']) ? $_SERVER['https_proxy'] : $_SERVER['HTTPS_PROXY']);
         }
 
         // Remove proxy if URL matches no_proxy directive
-        if (!empty($_SERVER['NO_PROXY']) || !empty($_SERVER['no_proxy']) && parse_url($url, PHP_URL_HOST)) {
-            $pattern = new NoProxyPattern(!empty($_SERVER['no_proxy']) ? $_SERVER['no_proxy'] : $_SERVER['NO_PROXY']);
+        if ( ! empty($_SERVER['NO_PROXY']) || ! empty($_SERVER['no_proxy']) && parse_url($url, PHP_URL_HOST)) {
+            $pattern = new NoProxyPattern( ! empty($_SERVER['no_proxy']) ? $_SERVER['no_proxy'] : $_SERVER['NO_PROXY']);
             if ($pattern->test($url)) {
                 unset($proxy);
             }
         }
 
-        if (!empty($proxy)) {
-            $proxyURL = isset($proxy['scheme']) ? $proxy['scheme'] . '://' : '';
+        if ( ! empty($proxy)) {
+            $proxyURL = isset($proxy['scheme']) ? $proxy['scheme'].'://' : '';
             $proxyURL .= isset($proxy['host']) ? $proxy['host'] : '';
 
             if (isset($proxy['port'])) {
-                $proxyURL .= ":" . $proxy['port'];
+                $proxyURL .= ":".$proxy['port'];
             } elseif ('http://' == substr($proxyURL, 0, 7)) {
                 $proxyURL .= ":80";
             } elseif ('https://' == substr($proxyURL, 0, 8)) {
@@ -1457,7 +1457,7 @@ 
             // http(s):// is not supported in proxy
             $proxyURL = str_replace(array('http://', 'https://'), array('tcp://', 'ssl://'), $proxyURL);
 
-            if (0 === strpos($proxyURL, 'ssl:') && !extension_loaded('openssl')) {
+            if (0 === strpos($proxyURL, 'ssl:') && ! extension_loaded('openssl')) {
                 throw new RuntimeException('You must enable the openssl extension to use a proxy over https');
             }
 
@@ -1485,7 +1485,7 @@ 
             if (isset($proxy['user'])) {
                 $auth = rawurldecode($proxy['user']);
                 if (isset($proxy['pass'])) {
-                    $auth .= ':' . rawurldecode($proxy['pass']);
+                    $auth .= ':'.rawurldecode($proxy['pass']);
                 }
                 $auth = base64_encode($auth);