inc/smarty/plugins/function.fetch.php

   1 <?php
   2 /**
   3  * Smarty plugin
   4  * @package Smarty
   5  * @subpackage plugins
   6  */
   7
   8
   9 /**
  10  * Smarty {fetch} plugin
  11  *
  12  * Type:     function<br>
  13  * Name:     fetch<br>
  14  * Purpose:  fetch file, web or ftp data and display results
  15  * @link http://smarty.php.net/manual/en/language.function.fetch.php {fetch}
  16  *       (Smarty online manual)
  17  * @param array
  18  * @param Smarty
  19  * @return string|null if the assign parameter is passed, Smarty assigns the
  20  *                     result to a template variable
  21  */
  22 function smarty_function_fetch($params, &$smarty)
  23 {
  24     if (empty($params['file'])) {
  25         $smarty->_trigger_fatal_error("[plugin] parameter 'file' cannot be empty");
  26         return;
  27     }
  28
  29     if ($smarty->security && !preg_match('!^(http|ftp)://!i', $params['file'])) {
  30                 $_params = array('resource_type' => 'file', 'resource_name' => $params['file']);
  31                 require_once(SMARTY_DIR . 'core' . DIRECTORY_SEPARATOR . 'core.is_secure.php');
  32                 if(!smarty_core_is_secure($_params, $smarty)) {
  33             $smarty->_trigger_fatal_error('[plugin] (secure mode) fetch \'' . $params['file'] . '\' is not allowed');
  34             return;
  35                 }
  36
  37                 // fetch the file
  38                 if($fp = @fopen($params['file'],'r')) {
  39                         while(!feof($fp)) {
  40                                 $content .= fgets ($fp,4096);
  41                         }
  42                         fclose($fp);
  43                 } else {
  44             $smarty->_trigger_fatal_error('[plugin] fetch cannot read file \'' . $params['file'] . '\'');
  45             return;
  46                 }
  47     } else {
  48                 // not a local file
  49                 if(preg_match('!^http://!i',$params['file'])) {
  50                         // http fetch
  51                         if($uri_parts = parse_url($params['file'])) {
  52                                 // set defaults
  53                                 $host = $server_name = $uri_parts['host'];
  54                                 $timeout = 30;
  55                                 $accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*";
  56                                 $agent = "Smarty Template Engine ".$smarty->_version;
  57                                 $referer = "";
  58                                 $uri = !empty($uri_parts['path']) ? $uri_parts['path'] : '/';
  59                                 $uri .= !empty($uri_parts['query']) ? '?' . $uri_parts['query'] : '';
  60                                 $_is_proxy = false;
  61                                 if(empty($uri_parts['port'])) {
  62                                         $port = 80;
  63                                 } else {
  64                                         $port = $uri_parts['port'];
  65                                 }
  66                                 if(empty($uri_parts['user'])) {
  67                                         $user = '';
  68                                 }
  69                                 // loop through parameters, setup headers
  70                                 foreach($params as $param_key => $param_value) {
  71                                         switch($param_key) {
  72                                                 case "file":
  73                                                 case "assign":
  74                                                 case "assign_headers":
  75                                                         break;
  76                                                 case "user":
  77                                                         if(!empty($param_value)) {
  78                                                                 $user = $param_value;
  79                                                         }
  80                                                         break;
  81                                                 case "pass":
  82                                                         if(!empty($param_value)) {
  83                                                                 $pass = $param_value;
  84                                                         }
  85                                                         break;
  86                                                 case "accept":
  87                                                         if(!empty($param_value)) {
  88                                                                 $accept = $param_value;
  89                                                         }
  90                                                         break;
  91                                                 case "header":
  92                                                         if(!empty($param_value)) {
  93                                                                 if(!preg_match('![\w\d-]+: .+!',$param_value)) {
  94                                                         $smarty->_trigger_fatal_error("[plugin] invalid header format '".$param_value."'");
  95                                                         return;
  96                                                                 } else {
  97                                                                         $extra_headers[] = $param_value;
  98                                                                 }
  99                                                         }
 100                                                         break;
 101                                                 case "proxy_host":
 102                                                         if(!empty($param_value)) {
 103                                                                 $proxy_host = $param_value;
 104                                                         }
 105                                                         break;
 106                                                 case "proxy_port":
 107                                                         if(!preg_match('!\D!', $param_value)) {
 108                                                                 $proxy_port = (int) $param_value;
 109                                                         } else {
 110                                                 $smarty->_trigger_fatal_error("[plugin] invalid value for attribute '".$param_key."'");
 111                                                 return;
 112                                                         }
 113                                                         break;
 114                                                 case "agent":
 115                                                         if(!empty($param_value)) {
 116                                                                 $agent = $param_value;
 117                                                         }
 118                                                         break;
 119                                                 case "referer":
 120                                                         if(!empty($param_value)) {
 121                                                                 $referer = $param_value;
 122                                                         }
 123                                                         break;
 124                                                 case "timeout":
 125                                                         if(!preg_match('!\D!', $param_value)) {
 126                                                                 $timeout = (int) $param_value;
 127                                                         } else {
 128                                                 $smarty->_trigger_fatal_error("[plugin] invalid value for attribute '".$param_key."'");
 129                                                 return;
 130                                                         }
 131                                                         break;
 132                                                 default:
 133                                         $smarty->_trigger_fatal_error("[plugin] unrecognized attribute '".$param_key."'");
 134                                         return;
 135                                         }
 136                                 }
 137                                 if(!empty($proxy_host) && !empty($proxy_port)) {
 138                                         $_is_proxy = true;
 139                                         $fp = fsockopen($proxy_host,$proxy_port,$errno,$errstr,$timeout);
 140                                 } else {
 141                                         $fp = fsockopen($server_name,$port,$errno,$errstr,$timeout);
 142                                 }
 143
 144                                 if(!$fp) {
 145                         $smarty->_trigger_fatal_error("[plugin] unable to fetch: $errstr ($errno)");
 146                         return;
 147                                 } else {
 148                                         if($_is_proxy) {
 149                                                 fputs($fp, 'GET ' . $params['file'] . " HTTP/1.0\r\n");
 150                                         } else {
 151                                                 fputs($fp, "GET $uri HTTP/1.0\r\n");
 152                                         }
 153                                         if(!empty($host)) {
 154                                                 fputs($fp, "Host: $host\r\n");
 155                                         }
 156                                         if(!empty($accept)) {
 157                                                 fputs($fp, "Accept: $accept\r\n");
 158                                         }
 159                                         if(!empty($agent)) {
 160                                                 fputs($fp, "User-Agent: $agent\r\n");
 161                                         }
 162                                         if(!empty($referer)) {
 163                                                 fputs($fp, "Referer: $referer\r\n");
 164                                         }
 165                                         if(isset($extra_headers) && is_array($extra_headers)) {
 166                                                 foreach($extra_headers as $curr_header) {
 167                                                         fputs($fp, $curr_header."\r\n");
 168                                                 }
 169                                         }
 170                                         if(!empty($user) && !empty($pass)) {
 171                                                 fputs($fp, "Authorization: BASIC ".base64_encode("$user:$pass")."\r\n");
 172                                         }
 173
 174                                         $content = '';
 175                                         fputs($fp, "\r\n");
 176                                         while(!feof($fp)) {
 177                                                 $content .= fgets($fp,4096);
 178                                         }
 179                                         fclose($fp);
 180                                         $csplit = split("\r\n\r\n",$content,2);
 181
 182                                         $content = $csplit[1];
 183
 184                                         if(!empty($params['assign_headers'])) {
 185                                                 $smarty->assign($params['assign_headers'],split("\r\n",$csplit[0]));
 186                                         }
 187                                 }
 188                         } else {
 189                         $smarty->_trigger_fatal_error("[plugin] unable to parse URL, check syntax");
 190                         return;
 191                         }
 192                 } else {
 193                         // ftp fetch
 194                         if($fp = @fopen($params['file'],'r')) {
 195                                 while(!feof($fp)) {
 196                                         $content .= fgets ($fp,4096);
 197                                 }
 198                                 fclose($fp);
 199                         } else {
 200                 $smarty->_trigger_fatal_error('[plugin] fetch cannot read file \'' . $params['file'] .'\'');
 201                 return;
 202                         }
 203                 }
 204
 205         }
 206
 207
 208     if (!empty($params['assign'])) {
 209         $smarty->assign($params['assign'],$content);
 210     } else {
 211         return $content;
 212     }
 213 }
 214
 215 /* vim: set expandtab: */
 216
 217 ?>