idFtpServer

program FTPServer_console;
(*
Sample of the usage of the TIdFtpServer component.
Also shows how to use Indy in console apps
Created by: Bas Gooijen (bas_gooijen@)

Disclaimer:
Use it at your own risk, it could contain bugs.

Copyright:
Freeware for all use
*)

{$APPTYPE console}
uses
Classes,
windows,
sysutils,
IdFTPList,
IdFTPServer,
idtcpserver,
IdSocketHandle,
idglobal,
IdHashCRC;

type
TFTPServer = class
private
{ Private declarations }
IdFTPServer: tIdFTPServer;
procedure IdFTPServer1UserLogin( ASender: TIdFTPServerThread; const AUsername, APassword: string; var AAuthenticated: Boolean ) ;
procedure IdFTPServer1ListDirectory( ASender: TIdFTPServerThread; const APath: string; ADirectoryListing: TIdFTPListItems ) ;
procedure IdFTPServer1RetrieveFile( ASender: TIdFTPServerThread; const AFilename: string; var VStream: TStream ) ;
procedure IdFTPServer1StoreFile( ASender: TIdFTPServerThread; const AFilename: string; AAppend: Boolean; var VStream: TStream ) ;
procedure IdFTPServer1MakeDirectory( ASender: TIdFTPServerThread; var VDirectory: string ) ;
// procedure IdFTPServer1GetFileSize( ASender: TIdFTPServerThread; const AFilename: string; var VFileSize: Int64 ) ;
procedure IdFTPServer1ChangeDirectory( ASender: TIdFTPServerThread; var VDirectory: string ) ;
// procedure IdFTPServer1CommandXCRC( ASender: TIdCommand ) ;
// procedure IdFTPServer1DisConnect( AThread: TIdPeerThread ) ;
protected
function TransLatePath( const APathname, homeDir: string ) : string;
public
constructor Create; reintroduce;
destructor Destroy; override;
end;
constructor TFTPServer.Create;
begin
IdFTPServer := tIdFTPServer.create( nil ) ;
IdFTPServer.DefaultPort := 21;
IdFTPServer.AllowAnonymousLogin := False;
IdFTPServer.EmulateSystem := ftpsUNIX;
IdFTPServer.HelpReply.text := '帮助还没实现';
IdFTPServer.OnChangeDirectory := IdFTPServer1ChangeDirectory;
IdFTPServer.OnChangeDirectory := IdFTPServer1ChangeDirectory;
// IdFTPServer.OnGetFileSize := IdFTPServer1GetFileSize;
IdFTPServer.OnListDirectory := IdFTPServer1ListDirectory;
IdFTPServer.OnUserLogin := IdFTPServer1UserLogin;
IdFTPServer.OnRetrieveFile := IdFTPServer1RetrieveFile;
IdFTPServer.OnStoreFile := IdFTPServer1StoreFile;
IdFTPServer.OnMakeDirectory := IdFTPServer1MakeDirectory;
IdFTPServer.Greeting.Text.Text := '欢迎进入FTP服务器！ ';
IdFTPServer.Greeting.NumericCode := 220;
// IdFTPServer.OnDisconnect := IdFTPServer1DisConnect;
// with mandHandlers.add do
// begin
// Command := 'XCRC';
// OnCommand := IdFTPServer1CommandXCRC;
// end;
IdFTPServer.Active := true;
end;
{
function CalculateCRC( const path: string ) : string;
var
f: tfilestream;
value: dword;
IdHashCRC32: TIdHashCRC32;
begin
IdHashCRC32 := nil;
f := nil;
try
IdHashCRC32 := TIdHashCRC32.create;

f := TFileStream.create( path, fmOpenRead or fmShareDenyWrite ) ;
value := IdHashCRC32.HashValue( f ) ;
result := inttohex( value, 8 ) ;
finally
f.free;
IdHashCRC32.free;
end;
end;

procedure TFTPServer.IdFTPServer1CommandXCRC( ASender: TIdCommand ) ;
// note, this is made up, and not defined in any rfc.
var
s: string;
begin
with TIdFTPServerThread( ASender.Thread ) do
begin
if Authenticated then
begin
try
s := ProcessPath( CurrentDir, ASender.UnparsedParams ) ;
s := TransLatePath( s, TIdFTPServerThread( ASender.Thread ) .HomeDir ) ;
ASender.Reply.SetReply( 213, CalculateCRC( s ) ) ;
except
ASender.Reply.SetReply( 500, 'file error' ) ;
end;
end;
end;
end;
}
destructor TFTPServer.Destroy;
begin
IdFTPServer.free;
inherited destroy;
end;

function StartsWith( const str, substr: string ) : boolean;
begin
result := copy( str, 1, length( substr ) ) = substr;
end;

function BackSlashToSlash( const str: string ) : string;
var
a: dword;
begin
result := str;
for a := 1 to length( result ) do
if result[a] = '\' then
result[a] := '/';
end;

function SlashToBackSlash( const str: string ) : string;
var
a: dword;
begin
result := str;
for a := 1 to length( result ) do
if result[a] = '/' then
result[a] := '\';
end;

function TFTPServer.TransLatePath( const APathname, homeDir: string ) : string;
var
tmppath: string;
begin
result := SlashToBackSlash( homeDir ) ;
tmppath := SlashToBackSlash( APathname ) ;
if homedir = '/' then
begin
result := tmppath;
exit;
end;

if length( APathname ) = 0 then
exit;
if result[length( result ) ] = '\' then
result := copy( result, 1, length( result ) - 1 ) ;
if tmppath[1] <> '\' then
result := result + '\';
result := result + tmppath;
end;

{function GetSizeOfFile( const APathname: string ) : int64;
begin
result := FileSizeByName( APathname ) ;
end;
}
function GetNewDirectory( old, action: string ) : string;
var
a: integer;
begin
if action = '../' then
begin
if old = '/' then
begin
result := old;
exit;
end;
a := length( old ) - 1;
while ( old[a] <> '\' ) and ( old[a] <> '/' ) do
dec( a ) ;
result := copy( old, 1, a ) ;
exit;
end;
if ( action[1] = '/' ) or ( action[1] = '\' ) then
result := action
else
result := old + action;
end;

procedure TFTPServer.IdFTPServer1UserLogin( ASender: TIdFTPServerThread;
const AUsername, APassword: string; var AAuthenticated: Boolean ) ;
begin
AAuthenticated := ( AUsername = 'wjh' ) and ( APassword = 'jhw' ) ;
if not AAuthenticated then
exit;
ASender.HomeDir := './';
asender.currentdir := '/';
end;

procedure TFTPServer.IdFTPServer1ListDirectory( ASender: TIdFTPServerThread; const APath: string; ADirectoryListing: TIdFTPListItems ) ;

procedure AddlistItem( aDirectoryListing: TIdFTPListItems; Filename: string; ItemType: TIdDirItemType; size: int64; date: tdatetime ) ;
var
listitem: TIdFTPListItem;
begin
listitem := aDirectoryListing.Add;
listitem.ItemType := ItemType;
listitem.FileName := Filename;
listitem.OwnerName := 'anonymous';
listitem.GroupName := 'all';
listitem.OwnerPermissions := 'rwx';
listitem.GroupPermissions := 'rwx';
erPermissions := 'rwx';
listitem.Size := size;
listitem.ModifiedDate := date;
end;

var
f: tsearchrec;
a: integer;
begin
ADirectoryListing.DirectoryName := APath;

a := FindFirst( TransLatePath( APath, ASender.HomeDir ) + '*.*', faAnyFile, f ) ;
while ( a = 0 ) do
begin
if ( f.Attr and faDirectory > 0 ) then
AddlistItem( ADirectoryListing, , ditDirectory, f.size, FileDateToDateTime( f.Time ) )
else
AddlistItem( ADirectoryListing, , ditFile, f.size, FileDateToDateTime( f.Time ) ) ;
a := FindNext( f ) ;
end;

FindClose( f ) ;
end;

procedure TFTPServer.IdFTPServer1RetrieveFile( ASender: TIdFTPServerThread;
const AFilename: string; var VStream: TStream ) ;
begin
VStream := TFileStream.create( translatepath( AFilename, ASender.HomeDir ) , fmopenread or fmShareDenyWrite ) ;
end;

procedure TFTPServer.IdFTPServer1StoreFile( ASender: TIdFTPServerThread;
const AFilename: string; AAppend: Boolean; var VStream: TStream ) ;
begin
if FileExists( translatepath( AFilename, ASender.HomeDir ) ) and AAppend then
begin
VStream := TFileStream.create( translatepath( AFilename, ASender.HomeDir ) , fmOpenWrite or fmShareExclusive ) ;
VStream.Seek( 0, soFromEnd ) ;
end
else
VStream := TFileStream.create( translatepath( AFilename, ASender.HomeDir ) , fmCreate or fmShareExclusive ) ;
end;

procedure TFTPServer.IdFTPServer1MakeDirectory( ASender: TIdFTPServerThread;
var VDirectory: string ) ;
begin
MkDir( TransLatePath( VDirectory, ASender.HomeDir ) ) ;
end;

{procedure TFTPServer.IdFTPServer1GetFileSize( ASender: TIdFTPServerThread;
const AFilename: string; var VFileSize: Int64 ) ;
begin
// VFileSize := GetSizeOfFile( TransLatePath( AFilename, ASender.HomeDir ) ) ;
end; }

procedure TFTPServer.IdFTPServer1ChangeDirectory( ASender: TIdFTPServerThread;
var VDirectory: string ) ;
begin
VDirectory := GetNewDirectory( ASender.CurrentDir, VDirectory ) ;
end;

{procedure TFTPServer.IdFTPServer1DisConnect( AThread: TIdPeerThread ) ;
begin
// nothing much here
end;}

begin
with TFTPServer.Create do
try
writeln( '程序正在运行， 按 [enter]键退出。' ) ;
readln
finally
free;
end;
end.