WEB-INF/lib/smarty/plugins/function.fetch.php

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