怎样发送匿名消息

Question

有些软件在局域网发消息可以匿名。不知道是怎样实现的，和net send有没有关系。

Answer 1

看微软的SDK中有没有关于Messager服务的说明。信使服务

Answer 2

我估计用api就是那个shellexec()直接调用net send的exe应该也是可以实现的吧

Answer 3

发送者可以任意
function NetSend(dest, Source, Msg: string): Longint;
type
  TNetMessageBufferSendFunction = function(servername, msgname, fromname: PWideChar;
    buf: PWideChar; buflen: Cardinal): Longint;
  stdcall;
var
  NetMessageBufferSend: TNetMessageBufferSendFunction;
  SourceWideChar: PWideChar;
  DestWideChar: PWideChar;
  MessagetextWideChar: PWideChar;
  Handle: THandle; 
begin
  Handle := LoadLibrary('NETAPI32.DLL');
  if Handle = 0 then
  begin
    Result := GetLastError;
    Exit;
  end;
    @NetMessageBufferSend := GetProcAddress(Handle, 'NetMessageBufferSend');
  if @NetMessageBufferSend = nil then
  begin
    Result := GetLastError;
    Exit;
  end;  MessagetextWideChar := nil;
  SourceWideChar      := nil;
  DestWideChar        := nil;  try
    GetMem(MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1);
    GetMem(DestWideChar, 20 * SizeOf(WideChar) + 1);
    StringToWideChar(Msg, MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1);
    StringToWideChar(Dest, DestWideChar, 20 * SizeOf(WideChar) + 1);    if Source = '' then
      Result := NetMessageBufferSend(nil, DestWideChar, nil,
        MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1)
    else
    begin
      GetMem(SourceWideChar, 20 * SizeOf(WideChar) + 1);
      StringToWideChar(Source, SourceWideChar, 20 * SizeOf(WideChar) + 1);
      Result := NetMessageBufferSend(nil, DestWideChar, SourceWideChar,
        MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1);
      FreeMem(SourceWideChar);
    end;
  finally
    FreeMem(MessagetextWideChar);
    FreeLibrary(Handle);
  end;
end;