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81 lines
2.3 KiB
81 lines
2.3 KiB
package ftpd
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import (
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"crypto/tls"
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"errors"
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"fmt"
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"net"
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ftpserver "github.com/fclairamb/ftpserverlib"
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"google.golang.org/grpc"
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)
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type FtpServerOption struct {
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Filer string
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IP string
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IpBind string
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Port int
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FilerGrpcAddress string
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FtpRoot string
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GrpcDialOption grpc.DialOption
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PassivePortStart int
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PassivePortStop int
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}
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type SftpServer struct {
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option *FtpServerOption
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ftpListener net.Listener
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}
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var _ = ftpserver.MainDriver(&SftpServer{})
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// NewServer returns a new FTP server driver
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func NewFtpServer(ftpListener net.Listener, option *FtpServerOption) (*SftpServer, error) {
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var err error
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server := &SftpServer{
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option: option,
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ftpListener: ftpListener,
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}
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return server, err
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}
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// GetSettings returns some general settings around the server setup
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func (s *SftpServer) GetSettings() (*ftpserver.Settings, error) {
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var portRange *ftpserver.PortRange
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if s.option.PassivePortStart > 0 && s.option.PassivePortStop > s.option.PassivePortStart {
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portRange = &ftpserver.PortRange{
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Start: s.option.PassivePortStart,
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End: s.option.PassivePortStop,
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}
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}
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return &ftpserver.Settings{
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Listener: s.ftpListener,
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ListenAddr: fmt.Sprintf("%s:%d", s.option.IpBind, s.option.Port),
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PublicHost: s.option.IP,
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PassiveTransferPortRange: portRange,
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ActiveTransferPortNon20: true,
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IdleTimeout: -1,
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ConnectionTimeout: 20,
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}, nil
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}
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// ClientConnected is called to send the very first welcome message
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func (s *SftpServer) ClientConnected(cc ftpserver.ClientContext) (string, error) {
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return "Welcome to SeaweedFS FTP Server", nil
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}
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// ClientDisconnected is called when the user disconnects, even if he never authenticated
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func (s *SftpServer) ClientDisconnected(cc ftpserver.ClientContext) {
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}
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// AuthUser authenticates the user and selects an handling driver
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func (s *SftpServer) AuthUser(cc ftpserver.ClientContext, username, password string) (ftpserver.ClientDriver, error) {
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return nil, nil
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}
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// GetTLSConfig returns a TLS Certificate to use
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// The certificate could frequently change if we use something like "let's encrypt"
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func (s *SftpServer) GetTLSConfig() (*tls.Config, error) {
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return nil, errors.New("no TLS certificate configured")
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}
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