TCP/IP(七）
(*@\000000501*)
(*@/// procedure t_smtp.action; *)
procedure t_smtp.action;
var
i,j: integer;
s: string;
begin
if (f_receipts=NIL) or (f_receipts.count=0)
or (f_body=NIL) or (f_body.count=0) or (f_user=) then EXIT;
(* not all necessary data filled in *)
login;
f_host:=my_hostname;
(*@/// Open Connection and submit header data *)
self.response; (* Read the welcome message *)self.SendCommand(HELO +f_host); (* open connection *)
self.response;
if f_status_nr>=300 then
raise EProtocolError.Create(SMTP,f_status_txt,f_status_nr);self.SendCommand(MAIL FROM: <+address_from(f_user,1)+>); (* send header data *)
self.response;
if f_status_nr>=300 then
raise EProtocolError.Create(SMTP,f_status_txt,f_status_nr);
for i:=0 to f_receipts.count-1 do begin
j:=0;
while true do begin
inc(j);
s:=address_from(f_receipts.strings[i],j);
if s<> then begin
self.SendCommand(RCPT TO: <+s+>); (* submit the receipts *)
self.response;
(* Log error users for later check ? *)
end
else BREAK;
end;
end;self.SendCommand(DATA); (* ready to send the mail *)
self.response;
if f_status_nr=354 then begin
for i:=0 to f_body.count-1 do begin
if f_body.strings[i]=. then f_body.strings[i]:=,;
self.write_s(f_socket,f_body.strings[i]+#13#10);
end;
self.write_s(f_socket,.+#13#10);
self.response;
end;
if f_status_nr>=300 then
raise EProtocolError.Create(SMTP,f_status_txt,f_status_nr);
(*@\*)
end;
(*@\000000A17*)
(*@/// procedure t_smtp.response; *)
procedure t_smtp.response;
var
s: string;
begin
s:=self.read_line(f_socket);
if assigned(f_tracer) then
f_tracer(s,tt_proto_get);
f_status_nr:=strtoint(copy(s,1,3));
f_status_txt:=copy(s,5,length(s));
(* if the answer consists of several lines read and discard all the following *)
while pos(-,s)=4 do begin
s:=self.read_line(f_socket);
if assigned(f_tracer) then
f_tracer(s,tt_proto_get);
end;
end;
(*@\000000801*)(*@/// procedure t_smtp.SetBody(Value: TStringList); *)
procedure t_smtp.SetBody(Value: TStringList);
begin
if value=NIL then
f_body.clear
else
f_body.assign(value);
end;
(*@\000000603*)
(*@/// procedure t_smtp.SetRecipients(Value: TStringList); *)
procedure t_smtp.SetRecipients(Value: TStringList);
begin
if value=NIL then
f_receipts.clear
else
f_receipts.assign(value);
end;
(*@\000000603*)
(*@\000000401*)
(*@/// class t_pop3(t_tcpip) *)
type
(*@/// t_reply=class(TObject) *)
t_reply=class(TObject)
public
index: integer;
length: integer;
from: string;
subject: string;
end;
(*@\000000601*)(*@/// constructor t_pop3.Create(Aowner:TComponent); *)
constructor t_pop3.Create(Aowner:TComponent);
begin
inherited create(Aowner);
f_list:=NIL;
f_mail:=TStringlist.Create;
f_list:=TList.Create;
f_socket_number:=110;
end;
(*@\000000501*)
(*@/// destructor t_pop3.Destroy; *)
destructor t_pop3.Destroy;
begin
f_mail.free;
try
if f_list<>NIL then
while f_list.count>0 do begin
TObject(f_list.items[0]).Free;
f_list.delete(0);
end;
except
end;
f_list.free;
inherited destroy;
end;
(*@\000000C01*)(*@/// procedure t_pop3.action; *)
procedure t_pop3.action;
begin
login;
if f_list.count<>0 then
getmail(1);
logout;
end;
(*@\000000501*)
(*@/// procedure t_pop3.response; *)
procedure t_pop3.response;
var
s: string;
begin
s:=self.read_line(f_socket);
if assigned(f_tracer) then
f_tracer(s,tt_proto_get);
if copy(s,1,3)=+OK then
{ everything OK }
else if copy(s,1,4)=-ERR then
raise EProtocolError.Create(POP3,s,500)
else
raise EProtocolError.Create(POP3,s,999);
end;
(*@\000000701*)(*@/// procedure t_pop3.Login; // USER, PASS, LIST *)
procedure t_pop3.Login;
var
s: string;
h: t_reply;
begin
inherited login;
self.response;
self.SendCommand(USER +f_user); (* open connection *)
self.response;
self.write_s(f_socket,PASS +f_pass+#13#10);
if assigned(f_tracer) then
f_tracer(PASS *****,tt_proto_sent);
self.response;
self.SendCommand(LIST); (* open connection *)
self.response;
while true do begin
s:=self.read_line(f_socket);
if s=. then BREAK;
h:=t_reply.Create;
h.index:=strtoint(copy(s,1,pos( ,s)-1));
h.length:=strtoint(copy(s,pos( ,s)+1,length(s)));
h.from:=;
h.subject:=;
f_list.add(h);
end;
end;
(*@\*)
(*@/// procedure t_pop3.GetHeaders; // TOP *)
procedure t_pop3.GetHeaders;
var
i: integer;
h: t_reply;
s: string;
begin
f_mail.clear;
for i:=f_list.count-1 downto 0 do begin
h:=t_reply(f_list.items[i]);
self.SendCommand(TOP +inttostr(h.index)+ 1);
try
self.response; (* this may give a EProtocolError on older POP server *)
while true do begin
s:=self.read_line(f_socket);
if s=. then BREAK;
if pos(From:,s)=1 then
h.from:=copy(s,7,length(s));
if pos(Subject:,s)=1 then
h.subject:=copy(s,10,length(s));
end;
if h.subject<> then
f_mail.insert(0,h.from+#7+h.subject)
else
f_mail.insert(0,h.from)
except
on EPr
补充：软件开发 , Delphi ,
