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