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// Package sftp implements the SSH File Transfer Protocol as described in
// https://filezilla-project.org/specs/draft-ietf-secsh-filexfer-02.txt
package sftp
import (
"fmt"
"github.com/pkg/errors"
)
const (
ssh_FXP_INIT = 1
ssh_FXP_VERSION = 2
ssh_FXP_OPEN = 3
ssh_FXP_CLOSE = 4
ssh_FXP_READ = 5
ssh_FXP_WRITE = 6
ssh_FXP_LSTAT = 7
ssh_FXP_FSTAT = 8
ssh_FXP_SETSTAT = 9
ssh_FXP_FSETSTAT = 10
ssh_FXP_OPENDIR = 11
ssh_FXP_READDIR = 12
ssh_FXP_REMOVE = 13
ssh_FXP_MKDIR = 14
ssh_FXP_RMDIR = 15
ssh_FXP_REALPATH = 16
ssh_FXP_STAT = 17
ssh_FXP_RENAME = 18
ssh_FXP_READLINK = 19
ssh_FXP_SYMLINK = 20
ssh_FXP_STATUS = 101
ssh_FXP_HANDLE = 102
ssh_FXP_DATA = 103
ssh_FXP_NAME = 104
ssh_FXP_ATTRS = 105
ssh_FXP_EXTENDED = 200
ssh_FXP_EXTENDED_REPLY = 201
)
const (
ssh_FX_OK = 0
ssh_FX_EOF = 1
ssh_FX_NO_SUCH_FILE = 2
ssh_FX_PERMISSION_DENIED = 3
ssh_FX_FAILURE = 4
ssh_FX_BAD_MESSAGE = 5
ssh_FX_NO_CONNECTION = 6
ssh_FX_CONNECTION_LOST = 7
ssh_FX_OP_UNSUPPORTED = 8
// see draft-ietf-secsh-filexfer-13
// https://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-9.1
ssh_FX_INVALID_HANDLE = 9
ssh_FX_NO_SUCH_PATH = 10
ssh_FX_FILE_ALREADY_EXISTS = 11
ssh_FX_WRITE_PROTECT = 12
ssh_FX_NO_MEDIA = 13
ssh_FX_NO_SPACE_ON_FILESYSTEM = 14
ssh_FX_QUOTA_EXCEEDED = 15
ssh_FX_UNKNOWN_PRINCIPAL = 16
ssh_FX_LOCK_CONFLICT = 17
ssh_FX_DIR_NOT_EMPTY = 18
ssh_FX_NOT_A_DIRECTORY = 19
ssh_FX_INVALID_FILENAME = 20
ssh_FX_LINK_LOOP = 21
ssh_FX_CANNOT_DELETE = 22
ssh_FX_INVALID_PARAMETER = 23
ssh_FX_FILE_IS_A_DIRECTORY = 24
ssh_FX_BYTE_RANGE_LOCK_CONFLICT = 25
ssh_FX_BYTE_RANGE_LOCK_REFUSED = 26
ssh_FX_DELETE_PENDING = 27
ssh_FX_FILE_CORRUPT = 28
ssh_FX_OWNER_INVALID = 29
ssh_FX_GROUP_INVALID = 30
ssh_FX_NO_MATCHING_BYTE_RANGE_LOCK = 31
)
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
)
type fxp uint8
func (f fxp) String() string {
switch f {
case ssh_FXP_INIT:
return "SSH_FXP_INIT"
case ssh_FXP_VERSION:
return "SSH_FXP_VERSION"
case ssh_FXP_OPEN:
return "SSH_FXP_OPEN"
case ssh_FXP_CLOSE:
return "SSH_FXP_CLOSE"
case ssh_FXP_READ:
return "SSH_FXP_READ"
case ssh_FXP_WRITE:
return "SSH_FXP_WRITE"
case ssh_FXP_LSTAT:
return "SSH_FXP_LSTAT"
case ssh_FXP_FSTAT:
return "SSH_FXP_FSTAT"
case ssh_FXP_SETSTAT:
return "SSH_FXP_SETSTAT"
case ssh_FXP_FSETSTAT:
return "SSH_FXP_FSETSTAT"
case ssh_FXP_OPENDIR:
return "SSH_FXP_OPENDIR"
case ssh_FXP_READDIR:
return "SSH_FXP_READDIR"
case ssh_FXP_REMOVE:
return "SSH_FXP_REMOVE"
case ssh_FXP_MKDIR:
return "SSH_FXP_MKDIR"
case ssh_FXP_RMDIR:
return "SSH_FXP_RMDIR"
case ssh_FXP_REALPATH:
return "SSH_FXP_REALPATH"
case ssh_FXP_STAT:
return "SSH_FXP_STAT"
case ssh_FXP_RENAME:
return "SSH_FXP_RENAME"
case ssh_FXP_READLINK:
return "SSH_FXP_READLINK"
case ssh_FXP_SYMLINK:
return "SSH_FXP_SYMLINK"
case ssh_FXP_STATUS:
return "SSH_FXP_STATUS"
case ssh_FXP_HANDLE:
return "SSH_FXP_HANDLE"
case ssh_FXP_DATA:
return "SSH_FXP_DATA"
case ssh_FXP_NAME:
return "SSH_FXP_NAME"
case ssh_FXP_ATTRS:
return "SSH_FXP_ATTRS"
case ssh_FXP_EXTENDED:
return "SSH_FXP_EXTENDED"
case ssh_FXP_EXTENDED_REPLY:
return "SSH_FXP_EXTENDED_REPLY"
default:
return "unknown"
}
}
type fx uint8
func (f fx) String() string {
switch f {
case ssh_FX_OK:
return "SSH_FX_OK"
case ssh_FX_EOF:
return "SSH_FX_EOF"
case ssh_FX_NO_SUCH_FILE:
return "SSH_FX_NO_SUCH_FILE"
case ssh_FX_PERMISSION_DENIED:
return "SSH_FX_PERMISSION_DENIED"
case ssh_FX_FAILURE:
return "SSH_FX_FAILURE"
case ssh_FX_BAD_MESSAGE:
return "SSH_FX_BAD_MESSAGE"
case ssh_FX_NO_CONNECTION:
return "SSH_FX_NO_CONNECTION"
case ssh_FX_CONNECTION_LOST:
return "SSH_FX_CONNECTION_LOST"
case ssh_FX_OP_UNSUPPORTED:
return "SSH_FX_OP_UNSUPPORTED"
default:
return "unknown"
}
}
type unexpectedPacketErr struct {
want, got uint8
}
func (u *unexpectedPacketErr) Error() string {
return fmt.Sprintf("sftp: unexpected packet: want %v, got %v", fxp(u.want), fxp(u.got))
}
func unimplementedPacketErr(u uint8) error {
return errors.Errorf("sftp: unimplemented packet type: got %v", fxp(u))
}
type unexpectedIDErr struct{ want, got uint32 }
func (u *unexpectedIDErr) Error() string {
return fmt.Sprintf("sftp: unexpected id: want %v, got %v", u.want, u.got)
}
func unimplementedSeekWhence(whence int) error {
return errors.Errorf("sftp: unimplemented seek whence %v", whence)
}
func unexpectedCount(want, got uint32) error {
return errors.Errorf("sftp: unexpected count: want %v, got %v", want, got)
}
type unexpectedVersionErr struct{ want, got uint32 }
func (u *unexpectedVersionErr) Error() string {
return fmt.Sprintf("sftp: unexpected server version: want %v, got %v", u.want, u.got)
}
// A StatusError is returned when an SFTP operation fails, and provides
// additional information about the failure.
type StatusError struct {
Code uint32
msg, lang string
}
func (s *StatusError) Error() string { return fmt.Sprintf("sftp: %q (%v)", s.msg, fx(s.Code)) }
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