Indy9的TIdFTPServer封装类

在Delphi 7开发下有强大的Indy控件，版本为9，要实现一个FTP服务器，参考自带的例子，发现还要写很多函数，而且不支持中文显示文件列表等等。于是，自己改进封装了下，形成一个TFTPServer类，源码如下：

{*******************************************************}  
{                                                       }  
{       系统名称 FTP服务器类                            }  
{       版权所有 (C) http://blog.csdn.net/akof1314      ;}  
{       单元名称 FTPServer.pas                          }  
{       单元功能 在Delphi 7下TIdFTPServer实现FTP服务器  }  
{                                                       }  
{*******************************************************}  
unit FTPServer;  
  
interface  
  
uses  
  Classes,  Windows,  Sysutils,  IdFTPList,  IdFTPServer,  Idtcpserver,  IdSocketHandle,  Idglobal,  IdHashCRC, IdStack;  
{------------------------------------------------------------------------------- 
  功能:  自定义消息，方便与窗体进行消息传递 
-------------------------------------------------------------------------------}  
  type  
    TFtpNotifyEvent = procedure (ADatetime: TDateTime;AUserIP, AEventMessage: string) of object;  
{------------------------------------------------------------------------------- 
  功能:  FTP服务器类 
-------------------------------------------------------------------------------}  
  type  
  TFTPServer = class  
  private  
    FUserName,FUserPassword,FBorrowDirectory: string;  
    FBorrowPort: Integer;  
    IdFTPServer: TIdFTPServer;  
    FOnFtpNotifyEvent: TFtpNotifyEvent;  
    procedure IdFTPServer1UserLogin( ASender: TIdFTPServerThread; const AUsername, APassword: string; var AAuthenticated: Boolean ) ;  
    procedure IdFTPServer1ListDirectory( ASender: TIdFTPServerThread; const APath: string; ADirectoryListing: TIdFTPListItems ) ;  
    procedure IdFTPServer1RenameFile( ASender: TIdFTPServerThread; const ARenameFromFile, ARenameToFile: string ) ;  
    procedure IdFTPServer1RetrieveFile( ASender: TIdFTPServerThread; const AFilename: string; var VStream: TStream ) ;  
    procedure IdFTPServer1StoreFile( ASender: TIdFTPServerThread; const AFilename: string; AAppend: Boolean; var VStream: TStream ) ;  
    procedure IdFTPServer1RemoveDirectory( ASender: TIdFTPServerThread; var VDirectory: string ) ;  
    procedure IdFTPServer1MakeDirectory( ASender: TIdFTPServerThread; var VDirectory: string ) ;  
    procedure IdFTPServer1GetFileSize( ASender: TIdFTPServerThread; const AFilename: string; var VFileSize: Int64 ) ;  
    procedure IdFTPServer1DeleteFile( ASender: TIdFTPServerThread; const APathname: string ) ;  
    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;  
    procedure Run;  
    procedure Stop;  
    function GetBindingIP():string;  
    property UserName: string read FUserName write FUserName;  
    property UserPassword: string read FUserPassword write FUserPassword;  
    property BorrowDirectory: string read FBorrowDirectory write FBorrowDirectory;  
    property BorrowPort: Integer read FBorrowPort write FBorrowPort;  
    property OnFtpNotifyEvent: TFtpNotifyEvent read FOnFtpNotifyEvent write FOnFtpNotifyEvent;  
  end;  
  
implementation  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.Create 
  功能:      创建函数 
  参数:      无 
  返回值:    无 
-------------------------------------------------------------------------------}  
constructor TFTPServer.Create;  
begin  
  IdFTPServer := tIdFTPServer.create( nil ) ;  
  IdFTPServer.DefaultPort := 21;               //默认端口号  
  IdFTPServer.AllowAnonymousLogin := False;   //是否允许匿名登录  
  IdFTPServer.EmulateSystem := ftpsUNIX;  
  IdFTPServer.HelpReply.text := '帮助还未实现！';  
  IdFTPServer.OnChangeDirectory := IdFTPServer1ChangeDirectory;  
  IdFTPServer.OnGetFileSize := IdFTPServer1GetFileSize;  
  IdFTPServer.OnListDirectory := IdFTPServer1ListDirectory;  
  IdFTPServer.OnUserLogin := IdFTPServer1UserLogin;  
  IdFTPServer.OnRenameFile := IdFTPServer1RenameFile;  
  IdFTPServer.OnDeleteFile := IdFTPServer1DeleteFile;  
  IdFTPServer.OnRetrieveFile := IdFTPServer1RetrieveFile;  
  IdFTPServer.OnStoreFile := IdFTPServer1StoreFile;  
  IdFTPServer.OnMakeDirectory := IdFTPServer1MakeDirectory;  
  IdFTPServer.OnRemoveDirectory := IdFTPServer1RemoveDirectory;  
  IdFTPServer.Greeting.Text.Text := '欢迎进入FTP服务器';  
  IdFTPServer.Greeting.NumericCode := 220;  
  IdFTPServer.OnDisconnect := IdFTPServer1DisConnect;  
  with IdFTPServer.CommandHandlers.add do  
  begin  
    Command := 'XCRC';   //可以迅速验证所下载的文档是否和源文档一样  
    OnCommand := IdFTPServer1CommandXCRC;  
  end;  
end;  
{------------------------------------------------------------------------------- 
  过程名:    CalculateCRC 
  功能:      计算CRC         
  参数:      const path: string 
  返回值:    string 
-------------------------------------------------------------------------------}  
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;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1CommandXCRC 
  功能:      XCRC命令         
  参数:      ASender: TIdCommand 
  返回值:    无 
-------------------------------------------------------------------------------}  
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;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.Destroy 
  功能:      析构函数         
  参数:      无 
  返回值:    无 
-------------------------------------------------------------------------------}  
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;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.Run 
  功能:      开启服务         
  参数:      无 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.Run;  
begin  
  IdFTPServer.DefaultPort := BorrowPort;  
  IdFTPServer.Active := True;  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.Stop 
  功能:      关闭服务         
  参数:      无 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.Stop;  
begin   
  IdFTPServer.Active := False;  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.GetBindingIP 
  功能:      获取绑定的IP地址         
  参数:       
  返回值:    string 
-------------------------------------------------------------------------------}  
function TFTPServer.GetBindingIP():string ;  
begin  
  Result := GStack.LocalAddress;    
end;  
{------------------------------------------------------------------------------- 
  过程名:    BackSlashToSlash 
  功能:      反斜杠到斜杠 
  参数:      const str: string 
  返回值:    string 
-------------------------------------------------------------------------------}  
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;  
  
{------------------------------------------------------------------------------- 
  过程名:    SlashToBackSlash 
  功能:      斜杠到反斜杠         
  参数:      const str: string 
  返回值:    string 
-------------------------------------------------------------------------------}  
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;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.TransLatePath 
  功能:      路径名称翻译         
  参数:      const APathname, homeDir: string 
  返回值:    string 
-------------------------------------------------------------------------------}  
function TFTPServer.TransLatePath( const APathname, homeDir: string ) : string;  
var  
  tmppath: string;  
begin  
  result := SlashToBackSlash(Utf8ToAnsi(homeDir) ) ;  
  tmppath := SlashToBackSlash( Utf8ToAnsi(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;  
  
{------------------------------------------------------------------------------- 
  过程名:    GetNewDirectory 
  功能:      得到新目录         
  参数:      old, action: string 
  返回值:    string 
-------------------------------------------------------------------------------}  
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;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1UserLogin 
  功能:      允许服务器执行一个客户端连接的用户帐户身份验证         
  参数:      ASender: TIdFTPServerThread; const AUsername, APassword: string; var AAuthenticated: Boolean 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.IdFTPServer1UserLogin( ASender: TIdFTPServerThread;  
  const AUsername, APassword: string; var AAuthenticated: Boolean ) ;  
begin  
  AAuthenticated := ( AUsername = UserName ) and ( APassword = UserPassword ) ;  
  if not AAuthenticated then  
    exit;  
  ASender.HomeDir := AnsiToUtf8(BorrowDirectory);  
  asender.currentdir := '/';  
  if Assigned(FOnFtpNotifyEvent) then  
    OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'用户登录服务器');  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1ListDirectory 
  功能:      允许服务器生成格式化的目录列表         
  参数:      ASender: TIdFTPServerThread; const APath: string; ADirectoryListing: TIdFTPListItems 
  返回值:    无 
-------------------------------------------------------------------------------}  
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; //表示一个文件系统的属性集  
    listitem.FileName := AnsiToUtf8(Filename);  //名称分配给目录中的列表项,这里防止了中文乱码  
    listitem.OwnerName := 'anonymous';//代表了用户拥有的文件或目录项的名称  
    listitem.GroupName := 'all';    //指定组名拥有的文件名称或目录条目  
    listitem.OwnerPermissions := 'rwx'; //拥有者权限，R读W写X执行  
    listitem.GroupPermissions := 'rwx'; //组拥有者权限  
    listitem.UserPermissions := 'rwx';  //用户权限，基于用户和组权限  
    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, f.Name, ditDirectory, f.size, FileDateToDateTime( f.Time ) )  
    else  
      AddlistItem( ADirectoryListing, f.Name, ditFile, f.size, FileDateToDateTime( f.Time ) ) ;  
    a := FindNext( f ) ;  
  end;  
  
  FindClose( f ) ;  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1RenameFile 
  功能:      允许服务器重命名服务器文件系统中的文件         
  参数:      ASender: TIdFTPServerThread; const ARenameFromFile, ARenameToFile: string 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.IdFTPServer1RenameFile( ASender: TIdFTPServerThread;  
  const ARenameFromFile, ARenameToFile: string ) ;  
begin  
  try  
    if not MoveFile( pchar( TransLatePath( ARenameFromFile, ASender.HomeDir ) ) , pchar( TransLatePath( ARenameToFile, ASender.HomeDir ) ) ) then  
      RaiseLastOSError;  
  except  
    on e:Exception do  
    begin  
      if Assigned(FOnFtpNotifyEvent) then  
        OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'重命名文件[' + Utf8ToAnsi(ARenameFromFile) + ']失败，原因是' + e.Message);  
      Exit;  
    end;  
  end;  
  if Assigned(FOnFtpNotifyEvent) then  
    OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'重命名文件[' + Utf8ToAnsi(ARenameFromFile) + ']为[' + Utf8ToAnsi(ARenameToFile) + ']');  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1RetrieveFile 
  功能:      允许从服务器下载文件系统中的文件 
  参数:      ASender: TIdFTPServerThread; const AFilename: string; var VStream: TStream 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.IdFTPServer1RetrieveFile( ASender: TIdFTPServerThread;  
  const AFilename: string; var VStream: TStream ) ;  
begin  
  VStream := TFileStream.Create( translatepath( AFilename, ASender.HomeDir ) , fmopenread or fmShareDenyWrite ) ;  
  if Assigned(FOnFtpNotifyEvent) then  
    OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'下载文件[' + Utf8ToAnsi(AFilename) + ']');  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1StoreFile 
  功能:      允许在服务器上传文件系统中的文件 
  参数:      ASender: TIdFTPServerThread; const AFilename: string; AAppend: Boolean; var VStream: TStream 
  返回值:    无 
-------------------------------------------------------------------------------}  
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 ) ;  
  if Assigned(FOnFtpNotifyEvent) then  
    OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'上传文件[' + Utf8ToAnsi(AFilename) + ']');  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1RemoveDirectory 
  功能:      允许服务器在服务器删除文件系统的目录         
  参数:      ASender: TIdFTPServerThread; var VDirectory: string 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.IdFTPServer1RemoveDirectory( ASender: TIdFTPServerThread;  
  var VDirectory: string ) ;  
begin  
  try  
    RmDir( TransLatePath( VDirectory, ASender.HomeDir ) ) ;  
  except  
    on e:Exception do  
    begin  
      if Assigned(FOnFtpNotifyEvent) then  
        OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'删除目录[' + Utf8ToAnsi(VDirectory) + ']失败，原因是' + e.Message);  
      Exit;  
    end;  
  end;  
  if Assigned(FOnFtpNotifyEvent) then  
    OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'删除目录[' + Utf8ToAnsi(VDirectory) + ']');  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1MakeDirectory 
  功能:      允许服务器从服务器中创建一个新的子目录 
  参数:      ASender: TIdFTPServerThread; var VDirectory: string 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.IdFTPServer1MakeDirectory( ASender: TIdFTPServerThread;  
  var VDirectory: string ) ;  
begin  
  try  
    MkDir( TransLatePath( VDirectory, ASender.HomeDir ) ) ;  
  except  
    on e:Exception do  
    begin  
      if Assigned(FOnFtpNotifyEvent) then  
        OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'创建目录[' + Utf8ToAnsi(VDirectory) + ']失败，原因是' + e.Message);  
      Exit;  
    end;  
  end;  
  if Assigned(FOnFtpNotifyEvent) then  
    OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'创建目录[' + Utf8ToAnsi(VDirectory) + ']');  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1GetFileSize 
  功能:      允许服务器检索在服务器文件系统的文件的大小         
  参数:      ASender: TIdFTPServerThread; const AFilename: string; var VFileSize: Int64 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.IdFTPServer1GetFileSize( ASender: TIdFTPServerThread;  
  const AFilename: string; var VFileSize: Int64 ) ;  
begin  
  VFileSize := FileSizeByName( TransLatePath( AFilename, ASender.HomeDir ) ) ;  
  if Assigned(FOnFtpNotifyEvent) then  
    OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'获取文件大小');  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1DeleteFile 
  功能:      允许从服务器中删除的文件系统中的文件 
  参数:      ASender: TIdFTPServerThread; const APathname: string 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.IdFTPServer1DeleteFile( ASender: TIdFTPServerThread;  
  const APathname: string ) ;  
begin  
  try  
    DeleteFile( pchar( TransLatePath( ASender.CurrentDir + '/' + APathname, ASender.HomeDir ) ) ) ;  
  except  
    on e:Exception do  
    begin  
      if Assigned(FOnFtpNotifyEvent) then  
        OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'删除文件[' + Utf8ToAnsi(APathname) + ']失败，原因是' + e.Message);  
      Exit;  
    end;  
  end;  
  if Assigned(FOnFtpNotifyEvent) then  
    OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'删除文件[' + Utf8ToAnsi(APathname) + ']');  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1ChangeDirectory 
  功能:      允许服务器选择一个文件系统路径         
  参数:      ASender: TIdFTPServerThread; var VDirectory: string 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.IdFTPServer1ChangeDirectory( ASender: TIdFTPServerThread;  
  var VDirectory: string ) ;  
begin  
  VDirectory := GetNewDirectory( ASender.CurrentDir, VDirectory ) ;  
  if Assigned(FOnFtpNotifyEvent) then  
    OnFtpNotifyEvent(Now, ASender.Connection.Socket.Binding.PeerIP,'进入目录[' + Utf8ToAnsi(VDirectory) + ']');  
end;  
  
{------------------------------------------------------------------------------- 
  过程名:    TFTPServer.IdFTPServer1DisConnect 
  功能:      失去网络连接         
  参数:      AThread: TIdPeerThread 
  返回值:    无 
-------------------------------------------------------------------------------}  
procedure TFTPServer.IdFTPServer1DisConnect( AThread: TIdPeerThread ) ;  
begin  
  //  nothing much here  
end;  
end.  
使用工程示例：
 
unit Unit1; 
 
interface 
 
uses 
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, 
  Dialogs, StdCtrls, FTPServer; 
 
type 
  TForm1 = class(TForm) 
    btn1: TButton; 
    btn2: TButton; 
    edt_BorrowDirectory: TEdit; 
    lbl1: TLabel; 
    mmo1: TMemo; 
    lbl2: TLabel; 
    edt_BorrowPort: TEdit; 
    lbl3: TLabel; 
    edt_UserName: TEdit; 
    lbl4: TLabel; 
    edt_UserPassword: TEdit; 
    procedure btn1Click(Sender: TObject); 
    procedure btn2Click(Sender: TObject); 
    procedure TFTPServer1FtpNotifyEvent(ADatetime: TDateTime;AUserIP, AEventMessage: string); 
  private 
    FFtpServer: TFTPServer; 
  public 
    { Public declarations } 
  end; 
 
var 
  Form1: TForm1; 
 
implementation 
 
 
 
{$R *.dfm} 
 
procedure TForm1.btn1Click(Sender: TObject); 
begin 
  if not Assigned(FFtpServer) then 
  begin 
    FFtpServer := TFTPServer.Create; 
    FFtpServer.UserName := Trim(edt_UserName.Text); 
    FFtpServer.UserPassword := Trim(edt_UserPassword.Text); 
    FFtpServer.BorrowDirectory := Trim(edt_BorrowDirectory.Text); 
    FFtpServer.BorrowPort := StrToInt(Trim(edt_BorrowPort.Text)); 
    FFtpServer.OnFtpNotifyEvent := TFTPServer1FtpNotifyEvent; 
    FFtpServer.Run; 
    mmo1.Lines.Add(DateTimeToStr(Now) + #32 +'FTP服务器已开启，本机IP地址：' + FFtpServer.GetBindingIP); 
  end; 
end; 
 
procedure TForm1.btn2Click(Sender: TObject); 
begin 
  if Assigned(FFtpServer) then 
  begin 
    FFtpServer.Stop; 
    FreeAndNil(FFtpServer); 
    mmo1.Lines.Add(DateTimeToStr(Now) + #32 +'FTP服务器已关闭'); 
  end; 
end; 
 
procedure TForm1.TFTPServer1FtpNotifyEvent(ADatetime: TDateTime;AUserIP, AEventMessage: string); 
begin 
  mmo1.Lines.Add(DateTimeToStr(ADatetime) + #32 + AUserIP + #32 + AEventMessage); 
  SendMessage(mmo1.Handle,WM_VSCROLL,SB_PAGEDOWN,0); 
end; 
end.