Current File : //home1/lightco1/public_html/plugins/system/jsnframework/libraries/joomlashine/utils/http.php
<?php
/**
* @version $Id$
* @package JSN_Framework
* @author JoomlaShine Team <support@joomlashine.com>
* @copyright Copyright (C) 2012 JoomlaShine.com. All Rights Reserved.
* @license GNU/GPL v2 or later http://www.gnu.org/licenses/gpl-2.0.html
*
* Websites: http://www.joomlashine.com
* Technical Support: Feedback - http://www.joomlashine.com/contact-us/get-support.html
*/
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
// Import Joomla file library
jimport('joomla.filesystem.file');
// Import HTTP client library
class_exists('http_class') OR jsnimport('3rd-party.httpclient.http');
/**
* HTTP client class.
*
* @package JSN_Framework
* @since 1.0.0
*/
class JSNUtilsHttp
{
/**
* Fetch a remote URI then return results.
*
* If this method is triggered without the second parameter, <b>$target</b>, then
* result will be return in the following format:
*
* <pre>array(
* 'header' => array(
* 'header_1' => 'header_value_1',
* 'header_2' => 'header_value_2',
* etc...
* ),
* 'body' => 'fetched response body'
* )</pre>
*
* Otherwise, the fetched response body will be saved to the local file specified
* by the variable <b>$target</b>. The example below will download the remote image
* <b>http://placehold.it/300x200.gif</b> then save to the local file
* <b>/tmp/downloaded_image.gif</b>:
*
* <pre>JSNUtilsHttp::get(
* 'http://placehold.it/300x200.gif',
* '/tmp/downloaded_image.gif'
* );</pre>
*
* When the second parameter is set in method call, the method will always return
* the boolean value <b>true</b> if file is successfully saved or <b>false</b>
* if file is not saved.
*
* @param string $uri Remote URI for fetching content.
* @param string $target Set to a file path to save fetched content as local file.
* @param boolean $validateHeader Check for 200 OK header or not?
*
* @return array array('header' => 'Associative array of fetched header', 'body' => 'Fetched content')
*/
public static function get($uri, $target = '', $validateHeader = false)
{
// Preset return result
$result = array();
// Initialize HTTP client
$http = new http_class;
$http->follow_redirect = 1;
$http->redirection_limit = 5;
$http->GetRequestArguments($uri, $arguments);
// Open connection
if (($error = $http->Open($arguments)) == '')
{
if (($error = $http->SendRequest($arguments)) == '')
{
// Get response header
$header = array();
if (($error = $http->ReadReplyHeaders($header)) != '')
{
throw new Exception(JText::sprintf('JSN_EXTFW_HTTP_CONNECTION_ERROR', $error));
}
$result['header'] = $header;
// Validate header
if ($validateHeader)
{
foreach ($result['header'] AS $header => $value)
{
if (strtolower(substr($header, 0, 5)) == 'http/' AND strpos($header, '200') === false)
{
throw new Exception(JText::sprintf('JSN_EXTFW_HTTP_CONNECTION_ERROR', substr($header, strpos($header, ' '))));
}
}
}
// Get response body
$result['body'] = '';
while (true)
{
if (($error = $http->ReadReplyBody($body, 1000)) != '' OR strlen($body) == 0)
{
break;
}
$result['body'] .= $body;
}
}
else
{
throw new Exception(JText::sprintf('JSN_EXTFW_HTTP_CONNECTION_ERROR', $error));
}
// Close connection
$http->Close();
}
else
{
throw new Exception(JText::sprintf('JSN_EXTFW_HTTP_CONNECTION_ERROR', $error));
}
return ( ! empty($target) ? JFile::write($target, $result['body']) : $result);
}
/**
* Convert either an object or associative array to query string.
*
* @param mixed $obj Either an object or associative array.
* @param string $ns A name-space to apply to variable name.
*
* @return string
*/
public static function toQueryString($obj, $ns = '')
{
$qs = array();
foreach ((array) $obj AS $k => $v)
{
if (is_object($v) OR is_array($v))
{
$qs[] = self::toQueryString($v, empty($ns) ? $k : "{$ns}[{$k}]");
}
else
{
// Replace special characters
$v = urlencode($v);
$qs[] = empty($ns) ? "{$k}={$v}" : "{$ns}[{$k}]={$v}";
}
}
return implode('&', $qs);
}
}
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