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<?php |
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|
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/* |
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* Smarty plugin |
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* ------------------------------------------------------------- |
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* Type: function |
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* Name: fetch |
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* Purpose: fetch file, web or ftp data and display results |
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* ------------------------------------------------------------- |
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*/ |
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function smarty_function_fetch($params, &$smarty) |
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{ |
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$file = $params['file']; |
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|
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if (empty($file)) { |
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$smarty->_trigger_plugin_error("parameter 'file' cannot be empty"); |
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return; |
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} |
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|
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if ($smarty->security && !preg_match('!^(http|ftp)://!i', $file)) { |
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// fetching file, make sure it comes from secure directory |
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foreach ($smarty->secure_dir as $curr_dir) { |
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if (substr(realpath($file), 0, strlen(realpath($curr_dir))) == realpath($curr_dir)) { |
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$resource_is_secure = true; |
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break; |
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} |
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} |
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if (!$resource_is_secure) { |
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$smarty->_trigger_plugin_error("(secure mode) fetch '$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($fp = @fopen($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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$smarty->_trigger_plugin_error("fetch cannot read file '$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',$file)) { |
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// http fetch |
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if($uri_parts = parse_url($file)) { |
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// set defaults |
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$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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if(!empty($uri_parts['path'])) { |
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$uri = $uri_parts['path']; |
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} else { |
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$uri = '/'; |
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} |
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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 = $uri_parts['user']; |
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} |
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// loop through parameters, setup headers |
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foreach($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_plugin_error("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_plugin_error("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_plugin_error("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_plugin_error("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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|
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if(!$fp) { |
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$smarty->_trigger_plugin_error("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 $file HTTP/1.0\r\n"); |
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} else { |
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fputs($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: $referer\r\n"); |
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} |
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if(is_array($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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|
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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 = split("\r\n\r\n",$content,2); |
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|
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$content = $csplit[1]; |
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|
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if(!empty($params['assign_headers'])) { |
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$smarty->assign($params['assign_headers'],split("\r\n",$csplit[0])); |
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} |
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} |
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} else { |
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$smarty->_trigger_plugin_error("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($fp = @fopen($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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$smarty->_trigger_plugin_error("fetch cannot read file '$file'"); |
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return; |
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} |
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} |
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|
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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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echo $content; |
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} |
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} |
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|
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/* vim: set expandtab: */ |
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|
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?> |
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