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222 lines
8.6 KiB
222 lines
8.6 KiB
7 years ago
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<?php
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/**
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* Smarty plugin
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* @package Smarty
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* @subpackage plugins
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*/
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/**
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* Smarty {fetch} plugin
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*
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* Type: function<br>
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* Name: fetch<br>
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* Purpose: fetch file, web or ftp data and display results
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* @link http://smarty.php.net/manual/en/language.function.fetch.php {fetch}
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* (Smarty online manual)
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* @author Monte Ohrt <monte at ohrt dot com>
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* @param array
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* @param Smarty
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* @return string|null if the assign parameter is passed, Smarty assigns the
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* result to a template variable
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*/
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function smarty_function_fetch($params, &$smarty)
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{
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if (empty($params['file'])) {
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$smarty->_trigger_fatal_error("[plugin] parameter 'file' cannot be empty");
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return;
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}
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$content = '';
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if ($smarty->security && !preg_match('!^(http|ftp)://!i', $params['file'])) {
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$_params = array('resource_type' => 'file', 'resource_name' => $params['file']);
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require_once(SMARTY_CORE_DIR . 'core.is_secure.php');
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if(!smarty_core_is_secure($_params, $smarty)) {
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$smarty->_trigger_fatal_error('[plugin] (secure mode) fetch \'' . $params['file'] . '\' is not allowed');
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return;
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}
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// fetch the file
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if($fp = @fopen($params['file'],'r')) {
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while(!feof($fp)) {
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$content .= fgets ($fp,4096);
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}
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fclose($fp);
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} else {
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$smarty->_trigger_fatal_error('[plugin] fetch cannot read file \'' . $params['file'] . '\'');
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return;
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}
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} else {
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// not a local file
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if(preg_match('!^http://!i',$params['file'])) {
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// http fetch
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if($uri_parts = parse_url($params['file'])) {
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// set defaults
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$host = $server_name = $uri_parts['host'];
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$timeout = 30;
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$accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*";
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$agent = "Smarty Template Engine ".$smarty->_version;
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$referer = "";
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$uri = !empty($uri_parts['path']) ? $uri_parts['path'] : '/';
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$uri .= !empty($uri_parts['query']) ? '?' . $uri_parts['query'] : '';
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$_is_proxy = false;
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if(empty($uri_parts['port'])) {
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$port = 80;
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} else {
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$port = $uri_parts['port'];
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}
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if(!empty($uri_parts['user'])) {
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$user = $uri_parts['user'];
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}
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if(!empty($uri_parts['pass'])) {
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$pass = $uri_parts['pass'];
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}
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// loop through parameters, setup headers
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foreach($params as $param_key => $param_value) {
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switch($param_key) {
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case "file":
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case "assign":
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case "assign_headers":
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break;
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case "user":
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if(!empty($param_value)) {
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$user = $param_value;
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}
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break;
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case "pass":
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if(!empty($param_value)) {
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$pass = $param_value;
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}
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break;
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case "accept":
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if(!empty($param_value)) {
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$accept = $param_value;
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}
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break;
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case "header":
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if(!empty($param_value)) {
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if(!preg_match('![\w\d-]+: .+!',$param_value)) {
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$smarty->_trigger_fatal_error("[plugin] invalid header format '".$param_value."'");
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return;
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} else {
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$extra_headers[] = $param_value;
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}
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}
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break;
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case "proxy_host":
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if(!empty($param_value)) {
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$proxy_host = $param_value;
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}
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break;
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case "proxy_port":
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if(!preg_match('!\D!', $param_value)) {
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$proxy_port = (int) $param_value;
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} else {
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$smarty->_trigger_fatal_error("[plugin] invalid value for attribute '".$param_key."'");
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return;
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}
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break;
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case "agent":
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if(!empty($param_value)) {
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$agent = $param_value;
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}
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break;
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case "referer":
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if(!empty($param_value)) {
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$referer = $param_value;
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}
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break;
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case "timeout":
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if(!preg_match('!\D!', $param_value)) {
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$timeout = (int) $param_value;
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} else {
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$smarty->_trigger_fatal_error("[plugin] invalid value for attribute '".$param_key."'");
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return;
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}
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break;
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default:
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$smarty->_trigger_fatal_error("[plugin] unrecognized attribute '".$param_key."'");
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return;
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}
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}
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if(!empty($proxy_host) && !empty($proxy_port)) {
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$_is_proxy = true;
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$fp = fsockopen($proxy_host,$proxy_port,$errno,$errstr,$timeout);
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} else {
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$fp = fsockopen($server_name,$port,$errno,$errstr,$timeout);
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}
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if(!$fp) {
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$smarty->_trigger_fatal_error("[plugin] unable to fetch: $errstr ($errno)");
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return;
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} else {
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if($_is_proxy) {
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fputs($fp, 'GET ' . $params['file'] . " HTTP/1.0\r\n");
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} else {
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fputs($fp, "GET $uri HTTP/1.0\r\n");
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}
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if(!empty($host)) {
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fputs($fp, "Host: $host\r\n");
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}
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if(!empty($accept)) {
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fputs($fp, "Accept: $accept\r\n");
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}
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if(!empty($agent)) {
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fputs($fp, "User-Agent: $agent\r\n");
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}
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if(!empty($referer)) {
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fputs($fp, "Referer: $referer\r\n");
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}
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if(isset($extra_headers) && is_array($extra_headers)) {
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foreach($extra_headers as $curr_header) {
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fputs($fp, $curr_header."\r\n");
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}
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}
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if(!empty($user) && !empty($pass)) {
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fputs($fp, "Authorization: BASIC ".base64_encode("$user:$pass")."\r\n");
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}
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fputs($fp, "\r\n");
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while(!feof($fp)) {
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$content .= fgets($fp,4096);
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}
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fclose($fp);
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$csplit = preg_split("!\r\n\r\n!",$content,2);
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$content = $csplit[1];
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if(!empty($params['assign_headers'])) {
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$smarty->assign($params['assign_headers'],preg_split("!\r\n!",$csplit[0]));
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}
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}
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} else {
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$smarty->_trigger_fatal_error("[plugin] unable to parse URL, check syntax");
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return;
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}
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} else {
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// ftp fetch
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if($fp = @fopen($params['file'],'r')) {
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while(!feof($fp)) {
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$content .= fgets ($fp,4096);
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}
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fclose($fp);
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} else {
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$smarty->_trigger_fatal_error('[plugin] fetch cannot read file \'' . $params['file'] .'\'');
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return;
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}
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}
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}
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if (!empty($params['assign'])) {
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$smarty->assign($params['assign'],$content);
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} else {
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return $content;
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}
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}
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/* vim: set expandtab: */
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?>
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