thread_unit.pas

sql inject HDSI3--delphi.rar

unit thread_Unit;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, IdBaseComponent, IdComponent, IdTCPConnection, IdTCPClient,
  IdHTTP, Psock, NMHttp, StdCtrls, OleCtrls, SHDocVw, ComCtrls,

  ExtCtrls,Buttons, ImgList, Menus, 
  CheckLst,shellapi,wininet;

type
  C1 = class(TThread)
  private
    Num1:integer;           //记录线程
    ReSum:integer;          //记录查询结果数量
  protected
  public
    constructor create(Num:integer);

  end;

implementation


uses Main_Unit;

var
  CS:TRTLCriticalSection;    //定义全局临界区

//=========================== 构造线程函数 ============================
constructor C1.create(Num:integer);
begin
  Num1:=Num;                     //传递参数值
  FreeonTerminate:=True;         //运行完毕自己删除
  InitializeCriticalSection(CS); //初始化临界区
  inherited Create(false);       //创建后直接运行
end;//----------------------------- END -------------------------------

//====================== 判断网址是否存在的函数 =======================
function CheckUrl(url: string; TimeOut: integer = 50): 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;
  InternetSetOption(hSession, Internet_OPTION_CONNECT_TIMEOUT, @TimeOut, 4);
  hSession := InternetOpen('Mozilla/4.0', INTERNET_OPEN_TYPE_PRECONFIG, nil, nil, 0);
   //设置超时
  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(2);
      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
      400..450: result := false;
    else result := true;
    end;
    if assigned(hfile) then
      InternetCloseHandle(hfile);
      InternetCloseHandle(hsession);
    end;
end;//------------------------------ END ------------------------------

end.