125 lines
2.7 KiB
PHP
125 lines
2.7 KiB
PHP
<?php
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/**
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* Provides remote server communications options using [curl][ref-curl].
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*
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* [ref-curl]: http://php.net/curl
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*
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* @package Kohana
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* @author Kohana Team
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* @copyright (c) 2008-2009 Kohana Team
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* @license http://kohanaphp.com/license.html
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*/
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class remote_Core {
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// Default curl options
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public static $default_options = array
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(
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CURLOPT_USERAGENT => 'Mozilla/5.0 (compatible; Kohana v3.0 +http://kohanaphp.com/)',
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CURLOPT_CONNECTTIMEOUT => 5,
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CURLOPT_TIMEOUT => 5,
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);
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/**
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* Returns the output of a remote URL.
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*
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* @throws Kohana_Exception
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* @param string remote URL
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* @param array curl options
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* @return array
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*/
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public static function get($url, array $options = NULL)
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{
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// Add default options
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$options = array_merge((array) $options, remote::$default_options);
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// The transfer must always be returned
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$options[CURLOPT_RETURNTRANSFER] = TRUE;
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// Open a new remote connection
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$remote = curl_init($url);
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// Set connection options
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curl_setopt_array($remote, $options);
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// Get the response
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$response = curl_exec($remote);
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// Get the response information
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$code = curl_getinfo($remote, CURLINFO_HTTP_CODE);
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if ($response === FALSE OR $code !== 200)
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{
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throw new Kohana_Exception('Error fetching remote :url [ status :code ] :error',
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array(':url' => $url, ':code' => $code, ':error' => curl_error($remote)));
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}
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// Close the connection
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curl_close($remote);
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return $response;
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}
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/**
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* Returns the status code for a URL.
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*
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* @param string URL to check
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* @return integer
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*/
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public static function status($url)
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{
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// Get the hostname and path
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$url = parse_url($url);
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if (empty($url['path']))
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{
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// Request the root document
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$url['path'] = '/';
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}
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// Open a remote connection
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$remote = fsockopen($url['host'], 80, $errno, $errstr, 5);
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if ( ! is_resource($remote))
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return FALSE;
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// Set CRLF
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$CRLF = "\r\n";
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// Send request
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fwrite($remote, 'HEAD '.$url['path'].' HTTP/1.0'.$CRLF);
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fwrite($remote, 'Host: '.$url['host'].$CRLF);
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fwrite($remote, 'Connection: close'.$CRLF);
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fwrite($remote, 'User-Agent: Kohana Framework (+http://kohanaphp.com/)'.$CRLF);
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// Send one more CRLF to terminate the headers
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fwrite($remote, $CRLF);
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// Remote is offline
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$response = FALSE;
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while ( ! feof($remote))
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{
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// Get the line
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$line = trim(fgets($remote, 512));
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if ($line !== '' AND preg_match('#^HTTP/1\.[01] (\d{3})#', $line, $matches))
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{
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// Response code found
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$response = (int) $matches[1];
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break;
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}
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}
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// Close the connection
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fclose($remote);
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return $response;
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}
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final private function __construct()
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{
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// This is a static class
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}
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} // End remote
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