TCP/IP(九)
(*@\\\0000000B01*)
(*@\\\0000000801*)
(*@/// class t_news(t_mailnews) *)
(*@/// constructor t_news.Create(Aowner:TComponent); *)
constructor t_news.Create(Aowner:TComponent);
begin
inherited create(AOwner);
f_nntp:=NIL;
f_newsgroups:=TStringList.Create;
end;
(*@\\\0000000501*)
(*@/// destructor t_news.Destroy; *)
destructor t_news.Destroy;
begin
f_newsgroups.Free;
inherited destroy;
end;
(*@\\\000000030F*)
(*@/// procedure t_news.SetNewsgroups(Value: TStringList); *)
procedure t_news.SetNewsgroups(Value: TStringList);
begin
if value=NIL then
f_newsgroups.clear
else
f_newsgroups.assign(value);
end;
(*@\\\0000000603*)
(*@/// procedure t_news.action; *)
procedure t_news.action;
var
s:string;
i:integer;
begin
if (f_nntp=NIL) or (f_newsgroups=NIL) or (f_newsgroups.count=0)
or (f_newsgroups.count>10) (* no spamming, please *)
or (f_from='') then EXIT;
s:='Newsgroups: ';
i:=0;
while true do begin
s:=s+f_newsgroups.strings[i];
inc(i);
if i<f_newsgroups.count then
s:=s+',';
f_message.add(s);
if i>=f_newsgroups.count then BREAK;
s:=' ';
end;
if f_organization<>'' then f_message.add(f_organization);
inherited action;
f_nntp.login;
f_nntp.news:=f_message;
f_nntp.PostArticle;
f_nntp.logout;
f_message.clear;
end;
(*@\\\*)
(*@\\\0000000401*)
(*@/// class t_attachment(TObject) *)
(*@/// constructor t_attachment.Create; *)
constructor t_attachment.Create;
begin
inherited create;
f_text:=TStringlist.create;
f_data:=TMemoryStream.Create;
f_encoding:=ec_none;
end;
(*@\\\0000000617*)
(*@/// destructor t_attachment.Destroy; *)
destructor t_attachment.Destroy;
begin
f_text.free;
f_data.free;
inherited destroy;
end;
(*@\\\*)
(*@/// procedure t_attachment.SetText(value:TStringList); *)
procedure t_attachment.SetText(value:TStringList);
begin
if value=NIL then
f_text.clear
else begin
f_text.assign(value);
f_text.SaveToStream(TMemoryStream(f_data));
end;
end;
(*@\\\0000000701*)
(*@/// procedure t_attachment.SetData(value:TStream); *)
procedure t_attachment.SetData(value:TStream);
begin
if value=NIL then
TMemoryStream(f_data).clear
else begin
f_text.clear;
TMemoryStream(f_data).LoadFromStream(value);
end;
end;
(*@\\\000000041A*)
(*@\\\*)
(*@/// class t_mime(TComponent) *)
(*@/// constructor t_mime.Create(Aowner:TComponent); *)
constructor t_mime.Create(Aowner:TComponent);
begin
inherited Create(AOwner);
f_attachment:=TList.Create;
end;
(*@\\\000000040F*)
(*@/// destructor t_mime.Destroy; *)
destructor t_mime.Destroy;
begin
if f_attachment<>NIL then begin
try
RemoveAllAttachments;
except
end;
end;
f_attachment.free;
inherited Destroy;
end;
(*@\\\0000000701*)
(*@/// function t_mime.AttachFile(const filename:string):integer; *)
function t_mime.AttachFile(const filename:string):integer;
var
t: t_attachment;
data: TFileStream;
begin
t:=t_attachment.Create;
t.kind:='application/octet-stream';
t.encoding:=ec_base64;
data:=NIL;
try
data:=TFileStream.Create(filename,fmOpenRead);
t.data:=data;
data.free;
except
data.free;
t.free;
raise;
end;
t.disposition:='attachment; filename="'+filename_of(filename)+'"';
result:=f_attachment.add(t);
end;
(*@\\\*)
(*@/// function t_mime.AttachText(text: TStringList):integer; *)
function t_mime.AttachText(text: TStringList):integer;
var
t: t_attachment;
begin
t:=t_attachment.Create;
t.kind:='text/plain';
t.encoding:=ec_quotedprintable;
t.text:=text;
t.disposition:='';
result:=f_attachment.add(t);
end;
(*@\\\000000060C*)
(*@/// procedure t_mime.RemoveAttachment(index: integer); *)
procedure t_mime.RemoveAttachment(index: integer);
begin
if (index>=0) and (f_attachment.count>index) then begin
TObject(f_attachment[index]).free;
f_attachment.delete(index);
end;
end;
(*@\\\0000000301*)
(*@/// procedure t_mime.RemoveAllAttachments; *)
procedure t_mime.RemoveAllAttachments;
begin
while f_attachment.count>0 do begin
TObject(f_attachment[0]).free;
f_attachment.delete(0);
end;
end;
(*@\\\000000031E*)
(*@/// function t_mime.GetNumberOfAttachments: integer; *)
function t_mime.GetNumberOfAttachments: integer;
begin
result:=f_attachment.count;
end;
(*@\\\0000000317*)
(*@/// procedure t_mime.action; *)
procedure t_mime.action;
var
data, encoded: TStringList;
i,j,p: integer;
attach: t_attachment;
begin
if f_mail=NIL then EXIT;
boundary:=inttostr(round((now-encodedate(1970,1,1))*86400))+inttohex(my_ip_address,8)+'==';
data:=NIL;
p:=-1;
try
data:=TStringList.Create;
f_mail.Header.add('MIME-Version: 1.0');
f_mail.Header.add('Content-Type: multipart/mixed; boundary="'+boundary+'"');
f_mail.Header.add('Content-Transfer-Encoding: 7bit');
data.assign(f_mail.Body);
if data.count>0 then begin
f_mail.Body.clear;
p:=AttachText(data);
end;
for i:=0 to f_attachment.count-1 do begin
attach:=t_attachment(f_attachment[i]);
f_mail.Body.Add('');
f_mail.Body.Add('--'+boundary);
f_mail.Body.Add('Content-Type: '+attach.kind);
if attach.disposition<>'' then
f_mail.Body.Add('Content-Disposition: '+attach.disposition);
case attach.encoding of
ec_base64: f_mail.Body.Add('Content-Transfer-Encoding: base64');
ec_quotedprintable: f_mail.Body.Add('Content-Transfer-Encoding: quoted-printable');
end;
f_mail.Body.Add('');
case attach.encoding of
(*@/// ec_base64: *)
ec_base64: begin
encoded:=encode_base64(attach.data);
f_mail.Body.AddStrings(encoded);
encoded.free;
end;
(*@\\\0000000201*)
(*@/// ec_quotedprintable: // only for text ! *)
ec_quotedprintable: begin
for j:=0 to attach.text.count-1 do
f_mail.Body.Add(eight2seven_quoteprint(attach.text[j]));
end;
(*@\\\0000000315*)
(*@/// ec_none: // only for text ! *)
ec_none: begin
for j:=0 to attach.text.count-1 do
f_mail.Body.Add(eight2seven_quoteprint(attach.text[j]));
end;
(*@\\\0000000403*)
end;
end;
f_mail.Body.Add('');
f_mail.Body.Add('--'+boundary+'--');
f_mail.action;
if data.count>0 then
f_mail.body:=data;
finally
data.free;
RemoveAttachment(p);
end;
end;
(*@\\\0000002201*)
(*@/// procedure t_mime.SetMail(mail: TStringlist); *)
procedure t_mime.SetMail(mail: TStringlist);
(*@/// procedure strip_header(const line:string; var field,data: string); *)
procedure strip_header(const line:string; var field,data: string);
var
h: integer;
begin
h:=pos(':',line);
if h>0 then begin
field:=lowercase(copy(line,1,h-1));
data:=trim(copy(line,h+1,length(line)));
end
else begin
field:='';
data:='';
end;
end;
(*@\\\0000000B12*)
var
i,j: integer;
s,field,data: string;
attach: t_attachment;
begin
boundary:='';
RemoveAllAttachments;
(*@/// parse header lines and search for mime boundary *)
i:=0;
while (i<mail.count-1) and (mail.strings[i]<>'') do begin
strip_header(mail.strings[i],field,data);
(*@/// if field='content-type' then *)
if field='content-type' then begin
s:=copy(data,pos('boundary',data),length(data));
s:=copy(s,pos('"',s)+1,length(s));
boundary:=copy(s,1,pos('"',s)-1);
end;
(*@\\\0000000201*)
inc(i);
end;
(*@\\\0000000401*)
attach:=t_attachment.create;
while true do begin
inc(i); (* ignore the empty line *)
if i>=mail.count-1 then BREAK;
while (i<mail.count-1) and (mail.strings[i]<>'--'+boundary) and
(mail.strings[i]<>'--'+boundary+'--') do begin
attach.text.add(mail.strings[i]);
inc(i);
end;
case attach.encoding of
(*@/// ec_base64: *)
ec_base64: begin
attach.data:=decode_base64(attach.text);
attach.text:=NIL;
end;
(*@\\\0000000301*)
(*@/// ec_quotedprintable: *)
ec_quotedprintable: begin
for j:=0 to attach.text.count-1 do
attach.text.strings[j]:=seven2eight_quoteprint(attach.text.strings[j]);
end;
(*@\\\0000000301*)
ec_none: ;
end;
if mail.strings[i]='--'+boundary+'--' then BREAK; (* end of mime *)
if i>=mail.count-1 then BREAK;
if (attach.text.count>0) or (attach.data.size>0) then
f_attachment.add(attach);
attach:=t_attachment.create;
inc(i); (* ignore the empty line *)
if i>=mail.count-1 then BREAK;
(*@/// parse mime block header *)
while (i<mail.count-1) and (mail.strings[i]<>'') do begin
if s[1]<>' ' then
strip_header(mail.strings[i],field,data)
else
data:=data+s;
if false then
else if field='content-type' then attach.kind:=data
else if field='content-disposition' then attach.disposition:=data
(*@/// else if field='content-transfer-encoding' then begin *)
else if field='content-transfer-encoding' then begin
data:=lowercase(data);
if false then
else if data='base64' then
attach.encoding:=ec_base64
else if data='quoted-printable' then
attach.encoding:=ec_quotedprintable
else
attach.encoding:=ec_none;
end;
(*@\\\0000000716*)
inc(i);
end;
(*@\\\0000000901*)
end;
f_attachment.add(attach);
end;
(*@\\\0000001B33*)
(*@/// function t_mime.GetAttachment(index: integer):t_attachment; *)
function t_mime.GetAttachment(index: integer):t_attachment;
begin
if index>f_attachment.count-1 then
result:=NIL
else
result:=t_attachment(f_attachment[index]);
end;
(*@\\\0000000306*)
(*@\\\0000000501*)
(*@/// procedure Register; *)
procedure Register;
begin
RegisterComponents('TCP/IP', [t_finger]);
RegisterComponents('TCP/IP', [t_fingerD]);
RegisterComponents('TCP/IP', [t_http]);
RegisterComponents('TCP/IP', [t_ftp]);
RegisterComponents('TCP/IP', [t_lpr]);
RegisterComponents('TCP/IP', [t_smtp]);
RegisterComponents('TCP/IP', [t_mail]);
RegisterComponents('TCP/IP', [t_nntp]);
RegisterComponents('TCP/IP', [t_news]);
RegisterComponents('TCP/IP', [t_time]);
RegisterComponents('TCP/IP', [t_rexec]);
RegisterComponents('TCP/IP', [t_rsh]);
RegisterComponents('TCP/IP', [t_pop3]);
RegisterComponents('TCP/IP', [t_mime]);
end;
(*@\\\*)
(*@\\\0000003114*)
(*@/// initialization *)
begin
lpr_count:=0;
end.
(*@\\\*)
(*@\\\0001000011*)
