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unit upload;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, CrtSock;
Function FtpLogon(Server,User,Password:string):integer;
Procedure FtpLogoff;
Function FtpQuote(cmd:string):boolean;
Function FtpOpenWrite(FileName:string):integer;
Function FtpOpenRead(FileName:string):integer;
Function FtpClose(FileHandle:integer):boolean;
Function FtpError:string;
type
TForm1 = class(TForm)
edHost: TEdit;
edUser: TEdit;
edPass: TEdit;
edFile: TEdit;
upload: TButton;
OpenDialog1: TOpenDialog;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
Label4: TLabel;
Label5: TLabel;
Label6: TLabel;
Label7: TLabel;
Label8: TLabel;
procedure uploadClick(Sender: TObject);
private
{ Déclarations privées }
public
{ Déclarations publiques }
end;
var
Form1: TForm1;
ftpin,ftpout:TextFile;
last:string;
read:boolean;
implementation
{$R *.dfm}
////////////////////////////////////////////////////////////////////////////////
Function ReadString:string;
begin
repeat
readln(ftpin,Result);
until (Length(Result)<4)or(Result[4]<>'-');
last:=Result;
end;
////////////////////////////////////////////////////////////////////////////////
Function FtpError:string;
begin
result:=last;
end;
////////////////////////////////////////////////////////////////////////////////
Function GetValue(var s:string):integer;
var
i:integer;
begin
i:=length(s);
while s[i]<>',' do
dec(i);
Result:=StrToInt(copy(s,i+1,3));
SetLength(s,i-1);
end;
////////////////////////////////////////////////////////////////////////////////
Procedure WriteString(s:string);
begin
WriteLn(ftpout,s);
end;
////////////////////////////////////////////////////////////////////////////////
Function Status:char;
var
s:string;
begin
s:= ReadString;
if s ='' then Status:='?' else Status:=s[1];
end;
////////////////////////////////////////////////////////////////////////////////
Function FtpClose(FileHandle:integer):boolean;
begin
Disconnect(FileHandle);
result:=Status='2';
end;
////////////////////////////////////////////////////////////////////////////////
Function Exec(cmd:string):char;
begin
Writestring(cmd);
Result:=Status;
end;
////////////////////////////////////////////////////////////////////////////////
Function FtpQuote(cmd:string):boolean;
begin
Writestring(Cmd);
Result:=(Status='2');
end;
////////////////////////////////////////////////////////////////////////////////
Function FtpOpenRead(FileName:string):integer;
var
s:string;
b,e:integer;
port:word;
begin
read:=true;
Result:=-1;
if Exec('PASV')<>'2' then
exit;
b:=4; while (b<length(last)) and (not (last[b] in ['0'..'9'])) do inc(b);
e:=Length(last); while (e>0) and (not (last[b] in ['0'..'9'])) do dec(b);
s:=copy(last,b,e-b-1);
port:=getvalue(s);
port:=256*getvalue(s)+port;
for e:=1 to Length(s) do if s[e]=',' then
s[e]:='.'; // replace "," by "." in IP address
WriteString('RETR '+FileName);
Result:=CallServer(s,port);
if (Status<>'1')and(Result>=0) then
begin
Disconnect(Result);
Result:=-1;
end;
end;
////////////////////////////////////////////////////////////////////////////////
Function FtpOpenWrite(FileName:string):integer;
var
s:string;
b,e:integer;
port:word;
begin
read:=false;
Result:=-1;
if Exec('PASV')<>'2' then
exit;
b:=4; while (b<length(last)) and (not (last[b] in ['0'..'9'])) do inc(b);
e:=Length(last); while (e>0) and (not (last[b] in ['0'..'9'])) do dec(b);
s:=copy(last,b,e-b-1);
port := getvalue(s);
port:=256*getvalue(s)+port;
for e:=1 to Length(s) do if s[e]=',' then
s[e]:='.'; // replace "," by "." in IP address
WriteString('STOR '+FileName);
Result:=CallServer(s,port);
if (Status<>'1')and(Result>=0) then
begin
Disconnect(Result);
Result:=-1;
end;
end;
////////////////////////////////////////////////////////////////////////////////
procedure TForm1.uploadClick(Sender: TObject);
var
h:integer;
f:file;
i:integer;
p:pointer;
begin
screen.cursor:=crHourglass;
try
if opendialog1.execute then begin
assignfile(f,opendialog1.filename); // associe le nom de fichier à f
reset(f,1); // on se place au début du fichier (initialisation)
i:=filesize(f); // donne la taille du fichier
getmem(p,i); // reserve de la palce en mémoire de la taille du fichier
blockread(f,p^,i); // lecture du fichier par blocs
closefile(f); // fermeture du fichier
if FtpLogon(edHost.Text,edUser.Text,edPass.Text)<0 then raise exception.create(ftpError);
try
h:=ftpOpenWrite(edFile.Text);
if h<0 then raise exception.create(ftperror);
send(h,p,i,0);
if not ftpclose(h) then raise exception.create(ftperror);
finally
ftpLogoff;
end;
freemem(p); // libere la mémoire reservée au fichier
end;
finally
screen.cursor:=crDefault;
end;
end;
////////////////////////////////////////////////////////////////////////////////
Function FtpLogon(Server,User,Password:string):integer;
begin
Result:= CallServer(Server,21); // connexion au serveur
if Result > 0 then
begin
AssignCrtSock(Result,ftpin,ftpout);
if Status = '2' then
begin
if (Exec('USER '+User)='3') and (Exec('PASS '+Password)='2') then exit;
Disconnect(Result);
Result:=-3;
end
else
begin
Disconnect(Result);
Result:=-2;
end;
end;
end;
////////////////////////////////////////////////////////////////////////////////
Procedure FtpLogoff;
begin
Exec('QUIT');
CloseFile(ftpout);
end;
////////////////////////////////////////////////////////////////////////////////
end. |
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