checkurladdr.pas

domain3.2 SQL注入漏洞扫描 旁注 上传功能 数据库浏览

{##########################################
         旁注入侵专用程序 3.0升级版
 ----------------------------------------
  模块：网页扫描 - 检测网页是否存在
  描述：该单元主要用于检测指定页面是否存在
  作者：2005.3.14日下午  明小子
##########################################}

Unit CheckUrlAddr;

interface

uses
  Windows, Wininet,SysUtils;
  function CheckUrl(url: string; TimeOut: integer = 3000): boolean;
  
implementation

function CheckUrl(url: string; TimeOut: integer = 3000): boolean;
var
  hSession, hfile, hRequest: hInternet;
  dwindex, dwcodelen: dword;
  dwcode: array[1..20] of char;
  res: pchar;
  re: integer;
  Err1: integer;
  j: integer;
begin
  if pos('http://', lowercase(url)) = 0 then
    url := 'http://' + url;
  Result := false;
  hSession := InternetOpen('Mozilla/4.0', INTERNET_OPEN_TYPE_PRECONFIG, nil, nil, 0);
  InternetSetOption(hSession, Internet_OPTION_CONNECT_TIMEOUT, @TimeOut, 4);
  if assigned(hsession) then
  begin
    j := 1;
    while true do
    begin
      hfile := InternetOpenUrl(hsession, pchar(url), nil, 0, INTERNET_FLAG_RELOAD, 0);
      if hfile = nil then
      begin
        j := j + 1;
        Err1 := GetLastError;
        if j > 5 then break;
        if (Err1 <> 12002) or (Err1 <> 12152) then break;
        sleep(100);
      end
      else begin
        break;
      end;
    end;
    dwIndex := 0;
    dwCodeLen := 10;
    HttpQueryInfo(hfile, HTTP_QUERY_STATUS_CODE, @dwcode, dwcodeLen, dwIndex);
    res := pchar(@dwcode);
    re := strtointdef(res, 404);
    case re of
      300..500: result := False;
    else result := true;
    end;
    if assigned(hfile) then
      InternetCloseHandle(hfile);
    InternetCloseHandle(hsession);
  end;
end;

end.