unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Winsock;
type
TForm1 = class(TForm)
Edit1: TEdit;
Button1: TButton;
Memo1: TMemo;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
type
IPINFO = record
Ttl : char;
Tos : char;
IPFlags : char;
OptSize : char;
Options : ^char;
end;
ICMPECHO = record
Source : longint;
Status : longint;
RTTime : longint;
DataSize : Shortint;
Reserved : Shortint;
pData : ^variant;
i_ipinfo : IPINFO;
end;
TIcmpCreateFile =
function():integer;{$IFDEF WIN32} stdcall; {$ENDIF}
TIcmpCloseHandle =
procedure(var handle:integer);{$IFDEF WIN32} stdcall;{$ENDIF}
TIcmpSendEcho =
function(var handle:integer; endereco:DWORD; buffer:variant;
tam:WORD; IP:IPINFO; ICMP:ICMPECHO; tamicmp:DWORD;
tempo:DWORD):DWORD;{$IFDEF WIN32} stdcall; {$ENDIF}
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
var
wsadt : wsadata;
icmp :icmpecho;
HNDicmp : integer;
hndFile :integer;
Host :PHostEnt;
Destino :in_addr;
Endereco :^DWORD;
IP : ipinfo;
Retorno :integer;
dwRetorno :DWORD;
x :integer;
IcmpCreateFile : TIcmpCreateFile;
IcmpCloseHandle : TIcmpCloseHandle;
IcmpSendEcho : TIcmpSendEcho;
begin
if (edit1.Text = '') then
begin
Application.MessageBox('호스트 이름이나 IP를 입력하세요','Error', MB_OK);
exit;
end;
HNDicmp := LoadLibrary('ICMP.DLL');
if (HNDicmp <> 0) then
begin
@IcmpCreateFile := GetProcAddress(HNDicmp,'IcmpCreateFile');
@IcmpCloseHandle := GetProcAddress(HNDicmp,'IcmpCloseHandle');
@IcmpSendEcho := GetProcAddress(HNDicmp,'IcmpSendEcho');
if (@IcmpCreateFile=nil) or (@IcmpCloseHandle=nil) or
(@IcmpSendEcho=nil) then
begin
Application.MessageBox('Error getting ICMP Adress','Error', MB_OK);
FreeLibrary(HNDicmp);
end;
end;
Retorno := WSAStartup($0101,wsadt);
if (Retorno <> 0) then
begin
Application.MessageBox('WinSocket 을 로드하지 못합니다','WSAStartup', MB_OK);
WSACleanup();
FreeLibrary(HNDicmp);
end;
Destino.S_addr := inet_addr(Pchar(Edit1.text));
if (Destino.S_addr = 0) then
begin
Host := GetHostbyName(PChar(Edit1.text));
end
else
begin
Host := GetHostbyAddr(@Destino,sizeof(in_addr), AF_INET);
end;
if (host = nil) then
begin
Application.MessageBox('Host not found','Error', MB_OK);
WSACleanup();
FreeLibrary(HNDicmp);
exit;
end;
memo1.Lines.Add('Pinging ' + Edit1.text);
Endereco := @Host.h_addr_list;
HNDFile := IcmpCreateFile();
for x:= 0 to 4 do
begin
Ip.Ttl := char(255);
Ip.Tos := char(0);
Ip.IPFlags := char(0);
Ip.OptSize := char(0);
Ip.Options := nil;
dwRetorno := IcmpSendEcho(
HNDFile,
Endereco^,
null,
0,
Ip,
Icmp,
sizeof(Icmp),
DWORD(5000));
Destino.S_addr := icmp.source;
Memo1.Lines.Add('Ping ' + Edit1.text);
end;
IcmpCLoseHandle(HNDFile);
FreeLibrary(HNDicmp);
WSACleanup();
end;
end. |
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