library/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  * @author Monte Ohrt <monte at ohrt dot com>
  18  * @param array
  19  * @param Smarty
  20  * @return string|null if the assign parameter is passed, Smarty assigns the
  21  *                     result to a template variable
  22  */
  23 function smarty_function_fetch($params, &$smarty)
  24 {
  25     if (empty($params['file'])) {
  26         $smarty->_trigger_fatal_error("[plugin] parameter 'file' cannot be empty");
  27         return;
  28     }
  29
  30     $content = '';
  31     if ($smarty->security && !preg_match('!^(http|ftp)://!i', $params['file'])) {
  32         $_params = array('resource_type' => 'file', 'resource_name' => $params['file']);
  33         require_once(SMARTY_CORE_DIR . 'core.is_secure.php');
  34         if(!smarty_core_is_secure($_params, $smarty)) {
  35             $smarty->_trigger_fatal_error('[plugin] (secure mode) fetch \'' . $params['file'] . '\' is not allowed');
  36             return;
  37         }
  38
  39         // fetch the file
  40         if($fp = @fopen($params['file'],'r')) {
  41             while(!feof($fp)) {
  42                 $content .= fgets ($fp,4096);
  43             }
  44             fclose($fp);
  45         } else {
  46             $smarty->_trigger_fatal_error('[plugin] fetch cannot read file \'' . $params['file'] . '\'');
  47             return;
  48         }
  49     } else {
  50         // not a local file
  51         if(preg_match('!^http://!i',$params['file'])) {
  52             // http fetch
  53             if($uri_parts = parse_url($params['file'])) {
  54                 // set defaults
  55                 $host = $server_name = $uri_parts['host'];
  56                 $timeout = 30;
  57                 $accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*";
  58                 $agent = "Smarty Template Engine ".$smarty->_version;
  59                 $referer = "";
  60                 $uri = !empty($uri_parts['path']) ? $uri_parts['path'] : '/';
  61                 $uri .= !empty($uri_parts['query']) ? '?' . $uri_parts['query'] : '';
  62                 $_is_proxy = false;
  63                 if(empty($uri_parts['port'])) {
  64                     $port = 80;
  65                 } else {
  66                     $port = $uri_parts['port'];
  67                 }
  68                 if(!empty($uri_parts['user'])) {
  69                     $user = $uri_parts['user'];
  70                 }
  71                 if(!empty($uri_parts['pass'])) {
  72                     $pass = $uri_parts['pass'];
  73                 }
  74                 // loop through parameters, setup headers
  75                 foreach($params as $param_key => $param_value) {
  76                     switch($param_key) {
  77                         case "file":
  78                         case "assign":
  79                         case "assign_headers":
  80                             break;
  81                         case "user":
  82                             if(!empty($param_value)) {
  83                                 $user = $param_value;
  84                             }
  85                             break;
  86                         case "pass":
  87                             if(!empty($param_value)) {
  88                                 $pass = $param_value;
  89                             }
  90                             break;
  91                         case "accept":
  92                             if(!empty($param_value)) {
  93                                 $accept = $param_value;
  94                             }
  95                             break;
  96                         case "header":
  97                             if(!empty($param_value)) {
  98                                 if(!preg_match('![\w\d-]+: .+!',$param_value)) {
  99                                     $smarty->_trigger_fatal_error("[plugin] invalid header format '".$param_value."'");
 100                                     return;
 101                                 } else {
 102                                     $extra_headers[] = $param_value;
 103                                 }
 104                             }
 105                             break;
 106                         case "proxy_host":
 107                             if(!empty($param_value)) {
 108                                 $proxy_host = $param_value;
 109                             }
 110                             break;
 111                         case "proxy_port":
 112                             if(!preg_match('!\D!', $param_value)) {
 113                                 $proxy_port = (int) $param_value;
 114                             } else {
 115                                 $smarty->_trigger_fatal_error("[plugin] invalid value for attribute '".$param_key."'");
 116                                 return;
 117                             }
 118                             break;
 119                         case "agent":
 120                             if(!empty($param_value)) {
 121                                 $agent = $param_value;
 122                             }
 123                             break;
 124                         case "referer":
 125                             if(!empty($param_value)) {
 126                                 $referer = $param_value;
 127                             }
 128                             break;
 129                         case "timeout":
 130                             if(!preg_match('!\D!', $param_value)) {
 131                                 $timeout = (int) $param_value;
 132                             } else {
 133                                 $smarty->_trigger_fatal_error("[plugin] invalid value for attribute '".$param_key."'");
 134                                 return;
 135                             }
 136                             break;
 137                         default:
 138                             $smarty->_trigger_fatal_error("[plugin] unrecognized attribute '".$param_key."'");
 139                             return;
 140                     }
 141                 }
 142                 if(!empty($proxy_host) && !empty($proxy_port)) {
 143                     $_is_proxy = true;
 144                     $fp = fsockopen($proxy_host,$proxy_port,$errno,$errstr,$timeout);
 145                 } else {
 146                     $fp = fsockopen($server_name,$port,$errno,$errstr,$timeout);
 147                 }
 148
 149                 if(!$fp) {
 150                     $smarty->_trigger_fatal_error("[plugin] unable to fetch: $errstr ($errno)");
 151                     return;
 152                 } else {
 153                     if($_is_proxy) {
 154                         fputs($fp, 'GET ' . $params['file'] . " HTTP/1.0\r\n");
 155                     } else {
 156                         fputs($fp, "GET $uri HTTP/1.0\r\n");
 157                     }
 158                     if(!empty($host)) {
 159                         fputs($fp, "Host: $host\r\n");
 160                     }
 161                     if(!empty($accept)) {
 162                         fputs($fp, "Accept: $accept\r\n");
 163                     }
 164                     if(!empty($agent)) {
 165                         fputs($fp, "User-Agent: $agent\r\n");
 166                     }
 167                     if(!empty($referer)) {
 168                         fputs($fp, "Referer: $referer\r\n");
 169                     }
 170                     if(isset($extra_headers) && is_array($extra_headers)) {
 171                         foreach($extra_headers as $curr_header) {
 172                             fputs($fp, $curr_header."\r\n");
 173                         }
 174                     }
 175                     if(!empty($user) && !empty($pass)) {
 176                         fputs($fp, "Authorization: BASIC ".base64_encode("$user:$pass")."\r\n");
 177                     }
 178
 179                     fputs($fp, "\r\n");
 180                     while(!feof($fp)) {
 181                         $content .= fgets($fp,4096);
 182                     }
 183                     fclose($fp);
 184                     $csplit = split("\r\n\r\n",$content,2);
 185
 186                     $content = $csplit[1];
 187
 188                     if(!empty($params['assign_headers'])) {
 189                         $smarty->assign($params['assign_headers'],split("\r\n",$csplit[0]));
 190                     }
 191                 }
 192             } else {
 193                 $smarty->_trigger_fatal_error("[plugin] unable to parse URL, check syntax");
 194                 return;
 195             }
 196         } else {
 197             // ftp fetch
 198             if($fp = @fopen($params['file'],'r')) {
 199                 while(!feof($fp)) {
 200                     $content .= fgets ($fp,4096);
 201                 }
 202                 fclose($fp);
 203             } else {
 204                 $smarty->_trigger_fatal_error('[plugin] fetch cannot read file \'' . $params['file'] .'\'');
 205                 return;
 206             }
 207         }
 208
 209     }
 210
 211
 212     if (!empty($params['assign'])) {
 213         $smarty->assign($params['assign'],$content);
 214     } else {
 215         return $content;
 216     }
 217 }
 218
 219 /* vim: set expandtab: */
 220
 221 ?>