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| procedure TPingThread.DownloadFileFromURL (SourceURL : string ;
Destination : string ;
Username : string ;
Password : string ) ;
var
hSession, hConnect, hRequest: hInternet;
HostName, FileName: String;
f: File;
Buf: Pointer;
dwBufLen, dwIndex: DWord;
Data: Array[0..$400] of Char;
TempStr: String;
RequestMethod: PChar;
InternetFlag: DWord;
AcceptType: LPStr;
SL : TStringList ;
procedure ParseURL(URL: String; var HostName, FileName: String);
procedure ReplaceChar(c1, c2: Char; var St: String);
var
p: Integer;
begin
while True do
begin
p := Pos(c1, St);
if p = 0 then Break
else St[p] := c2;
end;
end;
var
i: Integer;
begin
if Pos('http://', LowerCase(URL)) <> 0 then
System.Delete(URL, 1, 7);
i := Pos('/', URL);
HostName := Copy(URL, 1, i);
FileName := Copy(URL, i, Length(URL) - i + 1);
if (Length(HostName) > 0) and (HostName[Length(HostName)] = '/') then
SetLength(HostName, Length(HostName) - 1);
end;
procedure CloseHandles;
begin
InternetCloseHandle(hRequest);
InternetCloseHandle(hConnect);
InternetCloseHandle(hSession);
end;
begin
if ProgressID > 0
then EventNr := csDownloadStart ;
FFileName := Destination ;
FAcceptTypes := '*/*' ;
FAgent := 'Delphi 4 HTTPGet' ;
FBinaryData := true ;
FUseCache := false ;
FURL := SourceURL ;
FFileName := Destination ;
FUsername := Username ;
FPassword := Password ;
FPostQuery := '' ;
FReferer := '' ;
FToFile := true ;
{ Eigentlicher Download }
FResult := false ;
try
ParseURL(FURL, HostName, FileName);
if FAgent <> '' then
hSession := InternetOpen(PChar(FAgent),
INTERNET_OPEN_TYPE_PRECONFIG, nil, nil, 0)
else
hSession := InternetOpen(nil,
INTERNET_OPEN_TYPE_PRECONFIG, nil, nil, 0);
hConnect := InternetConnect(hSession, PChar(HostName),
INTERNET_DEFAULT_HTTP_PORT, PChar(FUserName), PChar(FPassword), INTERNET_SERVICE_HTTP, 0, 0);
if FPostQuery = '' then RequestMethod := 'GET'
else RequestMethod := 'POST';
if FUseCache then InternetFlag := 0
else InternetFlag := INTERNET_FLAG_RELOAD;
AcceptType := PChar('Accept: ' + FAcceptTypes);
hRequest := HttpOpenRequest(hConnect, RequestMethod, PChar(FileName), 'HTTP/1.0',
PChar(FReferer), @AcceptType, InternetFlag, 0);
if FPostQuery = '' then
HttpSendRequest(hRequest, nil, 0, nil, 0)
else
HttpSendRequest(hRequest, 'Content-Type: application/x-www-form-urlencoded', 47,
PChar(FPostQuery), Length(FPostQuery));
if Terminated then
begin
CloseHandles;
FResult := False;
Exit;
end;
dwIndex := 0;
dwBufLen := 1024;
GetMem(Buf, dwBufLen);
FResult := HttpQueryInfo(hRequest, HTTP_QUERY_CONTENT_LENGTH,
Buf, dwBufLen, dwIndex);
if Terminated then
begin
FreeMem(Buf);
CloseHandles;
FResult := False;
Exit;
end;
if FResult or not FBinaryData then
begin
if FResult then
FFileSize := StrToInt(StrPas(Buf));
BytesReaded := 0;
if FToFile then
begin
AssignFile(f, FFileName);
Rewrite(f, 1);
end ;
while True do
begin
if Terminated then
begin
if FToFile then CloseFile(f);
FreeMem(Buf);
CloseHandles;
FResult := False;
Exit;
end;
if not InternetReadFile(hRequest, @Data, SizeOf(Data), BytesToRead) then Break
else
if BytesToRead = 0 then Break
else
begin
if FToFile then begin
BlockWrite(f, Data, BytesToRead) ;
end else begin
TempStr := Data;
SetLength(TempStr, BytesToRead);
end;
inc(BytesReaded, BytesToRead);
FTotalSize := FFileSize ;
FReaded := BytesReaded ;
// PROGRESSBAR HIER SETZEN
end;
end;
if FToFile then
FResult := FFileSize = Integer(BytesReaded)
else
begin
FResult := BytesReaded <> 0;
end;
if FToFile then CloseFile(f);
end;
FreeMem(Buf);
CloseHandles;
except
end;
end ; |