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Code Editor : NoProxyPattern.php
<?php /* * This file is part of Composer. * * (c) Nils Adermann <naderman@naderman.de> * Jordi Boggiano <j.boggiano@seld.be> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Composer\Util; /** * Tests URLs against no_proxy patterns. */ class NoProxyPattern { /** * @var string[] */ protected $rules = array(); /** * @param string $pattern no_proxy pattern */ public function __construct($pattern) { $this->rules = preg_split("/[\s,]+/", $pattern); } /** * Test a URL against the stored pattern. * * @param string $url * * @return true if the URL matches one of the rules. */ public function test($url) { $host = parse_url($url, PHP_URL_HOST); $port = parse_url($url, PHP_URL_PORT); if (empty($port)) { switch (parse_url($url, PHP_URL_SCHEME)) { case 'http': $port = 80; break; case 'https': $port = 443; break; } } foreach ($this->rules as $rule) { if ($rule == '*') { return true; } $match = false; list($ruleHost) = explode(':', $rule); list($base) = explode('/', $ruleHost); if (filter_var($base, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) { // ip or cidr match if (!isset($ip)) { $ip = gethostbyname($host); } if (strpos($ruleHost, '/') === false) { $match = $ip === $ruleHost; } else { // gethostbyname() failed to resolve $host to an ip, so we assume // it must be proxied to let the proxy's DNS resolve it if ($ip === $host) { $match = false; } else { // match resolved IP against the rule $match = self::inCIDRBlock($ruleHost, $ip); } } } else { // match end of domain $haystack = '.' . trim($host, '.') . '.'; $needle = '.'. trim($ruleHost, '.') .'.'; $match = stripos(strrev($haystack), strrev($needle)) === 0; } // final port check if ($match && strpos($rule, ':') !== false) { list(, $rulePort) = explode(':', $rule); if (!empty($rulePort) && $port != $rulePort) { $match = false; } } if ($match) { return true; } } return false; } /** * Check an IP address against a CIDR * * http://framework.zend.com/svn/framework/extras/incubator/library/ZendX/Whois/Adapter/Cidr.php * * @param string $cidr IPv4 block in CIDR notation * @param string $ip IPv4 address * * @return bool */ private static function inCIDRBlock($cidr, $ip) { // Get the base and the bits from the CIDR list($base, $bits) = explode('/', $cidr); // Now split it up into it's classes list($a, $b, $c, $d) = explode('.', $base); // Now do some bit shifting/switching to convert to ints $i = ($a << 24) + ($b << 16) + ($c << 8) + $d; $mask = $bits == 0 ? 0 : (~0 << (32 - $bits)); // Here's our lowest int $low = $i & $mask; // Here's our highest int $high = $i | (~$mask & 0xFFFFFFFF); // Now split the ip we're checking against up into classes list($a, $b, $c, $d) = explode('.', $ip); // Now convert the ip we're checking against to an int $check = ($a << 24) + ($b << 16) + ($c << 8) + $d; // If the ip is within the range, including highest/lowest values, // then it's within the CIDR range return $check >= $low && $check <= $high; } }
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