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feat(sftp-server): do not generate host key until first enabled (#7734)

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This commit is contained in:
KirCute_ECT
2024-12-30 22:54:37 +08:00
committed by GitHub
parent ed149be84b
commit aa1082a56c
6 changed files with 30 additions and 27 deletions
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11
server/ftp/const.go
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@ -1,11 +0,0 @@
package ftp
// From leffss/sftpd
const (
SSH_FXF_READ = 0x00000001
SSH_FXF_WRITE = 0x00000002
SSH_FXF_APPEND = 0x00000004
SSH_FXF_CREAT = 0x00000008
SSH_FXF_TRUNC = 0x00000010
SSH_FXF_EXCL = 0x00000020
)

122
server/ftp/sftp.go
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@ -1,122 +0,0 @@
package ftp
import (
"github.com/KirCute/sftpd-alist"
"github.com/alist-org/alist/v3/internal/errs"
"github.com/alist-org/alist/v3/internal/model"
"github.com/alist-org/alist/v3/pkg/utils"
"os"
)
type SftpDriverAdapter struct {
FtpDriver *AferoAdapter
}
func (s *SftpDriverAdapter) OpenFile(_ string, _ uint32, _ *sftpd.Attr) (sftpd.File, error) {
// See also GetHandle
return nil, errs.NotImplement
}
func (s *SftpDriverAdapter) OpenDir(_ string) (sftpd.Dir, error) {
// See also GetHandle
return nil, errs.NotImplement
}
func (s *SftpDriverAdapter) Remove(name string) error {
return s.FtpDriver.Remove(name)
}
func (s *SftpDriverAdapter) Rename(old, new string, _ uint32) error {
return s.FtpDriver.Rename(old, new)
}
func (s *SftpDriverAdapter) Mkdir(name string, attr *sftpd.Attr) error {
return s.FtpDriver.Mkdir(name, attr.Mode)
}
func (s *SftpDriverAdapter) Rmdir(name string) error {
return s.Remove(name)
}
func (s *SftpDriverAdapter) Stat(name string, _ bool) (*sftpd.Attr, error) {
stat, err := s.FtpDriver.Stat(name)
if err != nil {
return nil, err
}
return fileInfoToSftpAttr(stat), nil
}
func (s *SftpDriverAdapter) SetStat(_ string, _ *sftpd.Attr) error {
return errs.NotSupport
}
func (s *SftpDriverAdapter) ReadLink(_ string) (string, error) {
return "", errs.NotSupport
}
func (s *SftpDriverAdapter) CreateLink(_, _ string, _ uint32) error {
return errs.NotSupport
}
func (s *SftpDriverAdapter) RealPath(path string) (string, error) {
return utils.FixAndCleanPath(path), nil
}
func (s *SftpDriverAdapter) GetHandle(name string, flags uint32, _ *sftpd.Attr, offset uint64) (sftpd.FileTransfer, error) {
return s.FtpDriver.GetHandle(name, sftpFlagToOpenMode(flags), int64(offset))
}
func (s *SftpDriverAdapter) ReadDir(name string) ([]sftpd.NamedAttr, error) {
dir, err := s.FtpDriver.ReadDir(name)
if err != nil {
return nil, err
}
ret := make([]sftpd.NamedAttr, len(dir))
for i, d := range dir {
ret[i] = *fileInfoToSftpNamedAttr(d)
}
return ret, nil
}
// From leffss/sftpd
func sftpFlagToOpenMode(flags uint32) int {
mode := 0
if (flags & SSH_FXF_READ) != 0 {
mode |= os.O_RDONLY
}
if (flags & SSH_FXF_WRITE) != 0 {
mode |= os.O_WRONLY
}
if (flags & SSH_FXF_APPEND) != 0 {
mode |= os.O_APPEND
}
if (flags & SSH_FXF_CREAT) != 0 {
mode |= os.O_CREATE
}
if (flags & SSH_FXF_TRUNC) != 0 {
mode |= os.O_TRUNC
}
if (flags & SSH_FXF_EXCL) != 0 {
mode |= os.O_EXCL
}
return mode
}
func fileInfoToSftpAttr(stat os.FileInfo) *sftpd.Attr {
ret := &sftpd.Attr{}
ret.Flags |= sftpd.ATTR_SIZE
ret.Size = uint64(stat.Size())
ret.Flags |= sftpd.ATTR_MODE
ret.Mode = stat.Mode()
ret.Flags |= sftpd.ATTR_TIME
ret.ATime = stat.Sys().(model.Obj).CreateTime()
ret.MTime = stat.ModTime()
return ret
}
func fileInfoToSftpNamedAttr(stat os.FileInfo) *sftpd.NamedAttr {
return &sftpd.NamedAttr{
Name: stat.Name(),
Attr: *fileInfoToSftpAttr(stat),
}
}