/home/smartonegroup/www/system/vendor/smarty/smarty/src/FunctionHandler/Fetch.php
<?php
namespace Smarty\FunctionHandler;
use Smarty\Exception;
use Smarty\Template;
/**
* Smarty {fetch} plugin
* Type: function
* Name: fetch
* Purpose: fetch file, web or ftp data and display results
*
* @author Monte Ohrt <monte at ohrt dot com>
*
* @param array $params parameters
* @param Template $template template object
*
* @throws Exception
* @return string|null if the assign parameter is passed, Smarty assigns the result to a template variable
*/
class Fetch extends Base {
public function handle($params, Template $template) {
if (empty($params['file'])) {
trigger_error('[plugin] fetch parameter \'file\' cannot be empty', E_USER_NOTICE);
return;
}
// strip file protocol
if (stripos($params['file'], 'file://') === 0) {
$params['file'] = substr($params['file'], 7);
}
$protocol = strpos($params['file'], '://');
if ($protocol !== false) {
$protocol = strtolower(substr($params['file'], 0, $protocol));
}
if (isset($template->getSmarty()->security_policy)) {
if ($protocol) {
// remote resource (or php stream, …)
if (!$template->getSmarty()->security_policy->isTrustedUri($params['file'])) {
return;
}
} else {
// local file
if (!$template->getSmarty()->security_policy->isTrustedResourceDir($params['file'])) {
return;
}
}
}
$content = '';
if ($protocol === 'http') {
// http fetch
if ($uri_parts = parse_url($params['file'])) {
// set defaults
$host = $server_name = $uri_parts['host'];
$timeout = 30;
$accept = 'image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*';
$agent = 'Smarty Template Engine ' . \Smarty\Smarty::SMARTY_VERSION;
$referer = '';
$uri = !empty($uri_parts['path']) ? $uri_parts['path'] : '/';
$uri .= !empty($uri_parts['query']) ? '?' . $uri_parts['query'] : '';
$_is_proxy = false;
if (empty($uri_parts['port'])) {
$port = 80;
} else {
$port = $uri_parts['port'];
}
if (!empty($uri_parts['user'])) {
$user = $uri_parts['user'];
}
if (!empty($uri_parts['pass'])) {
$pass = $uri_parts['pass'];
}
// loop through parameters, setup headers
foreach ($params as $param_key => $param_value) {
switch ($param_key) {
case 'file':
case 'assign':
case 'assign_headers':
break;
case 'user':
if (!empty($param_value)) {
$user = $param_value;
}
break;
case 'pass':
if (!empty($param_value)) {
$pass = $param_value;
}
break;
case 'accept':
if (!empty($param_value)) {
$accept = $param_value;
}
break;
case 'header':
if (!empty($param_value)) {
if (!preg_match('![\w\d-]+: .+!', $param_value)) {
trigger_error("[plugin] invalid header format '{$param_value}'", E_USER_NOTICE);
return;
} else {
$extra_headers[] = $param_value;
}
}
break;
case 'proxy_host':
if (!empty($param_value)) {
$proxy_host = $param_value;
}
break;
case 'proxy_port':
if (!preg_match('!\D!', $param_value)) {
$proxy_port = (int)$param_value;
} else {
trigger_error("[plugin] invalid value for attribute '{$param_key }'", E_USER_NOTICE);
return;
}
break;
case 'agent':
if (!empty($param_value)) {
$agent = $param_value;
}
break;
case 'referer':
if (!empty($param_value)) {
$referer = $param_value;
}
break;
case 'timeout':
if (!preg_match('!\D!', $param_value)) {
$timeout = (int)$param_value;
} else {
trigger_error("[plugin] invalid value for attribute '{$param_key}'", E_USER_NOTICE);
return;
}
break;
default:
trigger_error("[plugin] unrecognized attribute '{$param_key}'", E_USER_NOTICE);
return;
}
}
if (!empty($proxy_host) && !empty($proxy_port)) {
$_is_proxy = true;
$fp = fsockopen($proxy_host, $proxy_port, $errno, $errstr, $timeout);
} else {
$fp = fsockopen($server_name, $port, $errno, $errstr, $timeout);
}
if (!$fp) {
trigger_error("[plugin] unable to fetch: $errstr ($errno)", E_USER_NOTICE);
return;
} else {
if ($_is_proxy) {
fputs($fp, 'GET ' . $params['file'] . " HTTP/1.0\r\n");
} else {
fputs($fp, "GET $uri HTTP/1.0\r\n");
}
if (!empty($host)) {
fputs($fp, "Host: $host\r\n");
}
if (!empty($accept)) {
fputs($fp, "Accept: $accept\r\n");
}
if (!empty($agent)) {
fputs($fp, "User-Agent: $agent\r\n");
}
if (!empty($referer)) {
fputs($fp, "Referer: $referer\r\n");
}
if (isset($extra_headers) && is_array($extra_headers)) {
foreach ($extra_headers as $curr_header) {
fputs($fp, $curr_header . "\r\n");
}
}
if (!empty($user) && !empty($pass)) {
fputs($fp, 'Authorization: BASIC ' . base64_encode("$user:$pass") . "\r\n");
}
fputs($fp, "\r\n");
while (!feof($fp)) {
$content .= fgets($fp, 4096);
}
fclose($fp);
$csplit = preg_split("!\r\n\r\n!", $content, 2);
$content = $csplit[1];
if (!empty($params['assign_headers'])) {
$template->assign($params['assign_headers'], preg_split("!\r\n!", $csplit[0]));
}
}
} else {
trigger_error("[plugin fetch] unable to parse URL, check syntax", E_USER_NOTICE);
return;
}
} else {
$content = @file_get_contents($params['file']);
if ($content === false) {
throw new Exception("{fetch} cannot read resource '" . $params['file'] . "'");
}
}
if (!empty($params['assign'])) {
$template->assign($params['assign'], $content);
} else {
return $content;
}
}
}