TCP/IP(四)

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TCP/IP(四)

来源: 作者: 时间:2016-01-23 10:15 【

(*@\000000501*)(*@/// destructor t_fingerd.Destroy; *)destructor t_fingerd.Destroy;begin f_answer.Free; inherited destroy; end;(*@\000000301*)(*@/// procedure t_fingerd.do_action; *)procedure t_fi

(*@\\0000000501*)
(*@/// destructor t_fingerd.Destroy; *)
destructor t_fingerd.Destroy;
begin
  f_answer.Free;
  inherited destroy;
  end;
(*@\\0000000301*)
(*@/// procedure t_fingerd.do_action; *)
procedure t_fingerd.do_action;
var
  i: integer;
  temp_socket: TSocket;
  finger_info:TFingerInfo;
  sockinfo: TSockAddr;
  s: string;
begin
  temp_socket:=f_socket;
  self.f_socket:=accept_socket_in(f_socket,sockinfo);
  f_eof:=false;
  finger_info.address:=longint(sockinfo.Sin_addr);
  s:=self.read_line(f_socket);
  finger_info.request:=s;
  finger_info.hostname:=;   (* NYI !!! *)
  if assigned(f_fingerrequest) then
    f_fingerrequest(self,finger_info);
  for i:=0 to f_answer.count-1 do begin
    self.write_s(f_socket,f_answer.strings[i]+#13#10);
    end;
  close_socket_linger(f_socket);
  f_socket:=temp_socket;
  end;
(*@\\000000131B*)
(*@/// procedure t_fingerd.SetAnswer(Value: TStringList); *)
procedure t_fingerd.SetAnswer(Value: TStringList);
begin
  if value=NIL then
    f_answer.clear
  else
    f_answer.assign(value);
  end;
(*@\\0000000603*)
(*@/// procedure t_fingerd.WndProc(var Msg : TMessage); *)
procedure t_fingerd.WndProc(var Msg : TMessage);
begin
  if msg.msg<>uwm_socketevent then
    inherited wndproc(msg)
  else begin
    if msg.lparamhi=socket_error then
    else begin
      case msg.lparamlo of
        fd_accept: begin
          do_action;
          end;
        end;
      end;
    end;
  end;
(*@\\0000000E09*)
(*@/// procedure t_fingerd.action; *)
procedure t_fingerd.action;
begin
  open_socket_in(f_socket,f_Socket_number,my_ip_address);
  if f_socket=INVALID_SOCKET then
    raise ESocketError.Create(WSAGetLastError);
  winsock.WSAAsyncSelect(f_socket,f_handle,uwm_socketevent,fd_accept);
  end;
(*@\\000000010B*)
(*@\\000000051C*)

{ HTTP and FTP - the file transfer protocols }
(*@/// class t_http(t_tcpip) *)
(*@/// constructor t_http.Create(Aowner:TComponent); *)
constructor t_http.Create(Aowner:TComponent);
begin
  inherited create(AOwner);
  f_content_post:=application/x-www-form-urlencoded;
  f_do_author:=TStringlist.Create;
  end;
(*@\\0000000503*)
(*@/// destructor t_http.Destroy; *)
destructor t_http.Destroy;
begin
  f_do_author.free;
  inherited destroy;
  end;
(*@\*)

(*@/// procedure t_http.sendrequest(const method,version: string); *)
procedure t_http.sendrequest(const method,version: string);
begin
  SendCommand(method+ +f_path+ HTTP/+version);
  if f_sender<> then
    SendCommand(From: +f_sender);
  if f_reference<> then
    SendCommand(Referer: +f_reference);
  if f_agent<> then
    SendCommand(User-Agent: +f_agent);
  if f_nocache then
    SendCommand(Pragma: no-cache);
  if method=POST then begin
    SendCommand(Content-Length: +inttostr(stream.size));
    if f_content_post<> then
      SendCommand(Content-Type: +f_content_post);
    end;
  if f_author<> then begin
    self.write_s(f_socket,Authorization: +f_author+#13#10);
    if assigned(f_tracer) then
      f_tracer(Authorization: *****,tt_proto_sent);
    end;
  self.write_s(f_socket,#13#10);                          (* finalize the request *)
  end;
(*@\\0000000301*)
(*@/// procedure t_http.getanswer; *)
procedure t_http.getanswer;
var
  s: string;
  proto,user,pass,port: string;
  field,data: string;
begin
  f_do_author.clear;
  f_type:=;
  f_size:=0;
  repeat
    s:=self.read_line(f_socket);
    if s<> then
      if assigned(f_tracer) then
        f_tracer(s,tt_proto_get);
    if false then
(*@///     else if left(s,8)=HTTP/1.0 then    http-status-reply *)
else if copy(s,1,8)=HTTP/1.0 then begin
  f_status_nr:=strtoint(copy(s,10,3));
  f_status_txt:=copy(s,14,length(s));
  if f_status_nr>=400 then EXIT;   (* HTTP error returned *)
  end
(*@\*)
(*@///     else if pos(:,s)>0         then    parse the response string *)
else if pos(:,s)>0 then begin
  field:=lowercase(copy(s,1,pos(:,s)-1));
  data:=copy(s,pos(:,s)+2,length(s));
  if false then
{   else if field=date then }
{   else if field=mime-version then }
{   else if field=pragma then }
{   else if field=allow then }
(*@///   else if field=location then   change the uri !!! *)
else if field=location then begin
  if proxy<> then
    f_path:=data            (* it goes via a proxy, so just change the uri *)
  else begin
    parse_url(data,proto,user,pass,f_hostname,port,f_path);
    if port<> then  f_Socket_number:=strtoint(port);
    end;
  end
(*@\\0000000601*)
{   else if field=server then }
{   else if field=content-encoding then }
(*@///   else if field=content-length then *)
else if field=content-length then
  f_size:=strtoint(data)
(*@\*)
(*@///   else if field=content-type then *)
else if field=content-type then
  f_type:=data
(*@\*)
(*@///   else if field=www-authenticate then *)
else if field=www-authenticate then
  f_do_author.add(data)
(*@\\000000020E*)
{   else if field=expires then }
{   else if field=last-modified then }
  end
(*@\\0000000901*)
(*@///     else                                 some very strange response, ignore it *)
else;
(*@\*)
  until s=;
  if f_status_nr>=400 then
    raise EProtocolError.Create(HTTP,f_status_txt,f_status_nr);
  end;
(*@\\0000001101*)

(*@/// procedure t_http.action; *)
procedure t_http.action;
var
  proto,user,pass,host,port,path: string;
begin
(*@///   parse url and proxy to f_hostname, f_path and f_socket_number *)
if f_proxy<> then begin
  parse_url(f_url,proto,user,pass,host,port,path);
  f_path:=f_url;
  if proto= then
    f_path:=http://+f_path;
  parse_url(f_proxy,proto,u

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