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package openssh
import (
sshfx "github.com/pkg/sftp/internal/encoding/ssh/filexfer"
)
const extensionPOSIXRename = "posix-rename@openssh.com"
// RegisterExtensionPOSIXRename registers the "posix-rename@openssh.com" extended packet with the encoding/ssh/filexfer package.
func RegisterExtensionPOSIXRename() {
sshfx.RegisterExtendedPacketType(extensionPOSIXRename, func() sshfx.ExtendedData {
return new(POSIXRenameExtendedPacket)
})
}
// ExtensionPOSIXRename returns an ExtensionPair suitable to append into an sshfx.InitPacket or sshfx.VersionPacket.
func ExtensionPOSIXRename() *sshfx.ExtensionPair {
return &sshfx.ExtensionPair{
Name: extensionPOSIXRename,
Data: "1",
}
}
// POSIXRenameExtendedPacket defines the posix-rename@openssh.com extend packet.
type POSIXRenameExtendedPacket struct {
OldPath string
NewPath string
}
// Type returns the SSH_FXP_EXTENDED packet type.
func (ep *POSIXRenameExtendedPacket) Type() sshfx.PacketType {
return sshfx.PacketTypeExtended
}
// MarshalPacket returns ep as a two-part binary encoding of the full extended packet.
func (ep *POSIXRenameExtendedPacket) MarshalPacket(reqid uint32, b []byte) (header, payload []byte, err error) {
p := &sshfx.ExtendedPacket{
ExtendedRequest: extensionPOSIXRename,
Data: ep,
}
return p.MarshalPacket(reqid, b)
}
// MarshalInto encodes ep into the binary encoding of the hardlink@openssh.com extended packet-specific data.
func (ep *POSIXRenameExtendedPacket) MarshalInto(buf *sshfx.Buffer) {
buf.AppendString(ep.OldPath)
buf.AppendString(ep.NewPath)
}
// MarshalBinary encodes ep into the binary encoding of the hardlink@openssh.com extended packet-specific data.
//
// NOTE: This _only_ encodes the packet-specific data, it does not encode the full extended packet.
func (ep *POSIXRenameExtendedPacket) MarshalBinary() ([]byte, error) {
// string(oldpath) + string(newpath)
size := 4 + len(ep.OldPath) + 4 + len(ep.NewPath)
buf := sshfx.NewBuffer(make([]byte, 0, size))
ep.MarshalInto(buf)
return buf.Bytes(), nil
}
// UnmarshalFrom decodes the hardlink@openssh.com extended packet-specific data from buf.
func (ep *POSIXRenameExtendedPacket) UnmarshalFrom(buf *sshfx.Buffer) (err error) {
*ep = POSIXRenameExtendedPacket{
OldPath: buf.ConsumeString(),
NewPath: buf.ConsumeString(),
}
return buf.Err
}
// UnmarshalBinary decodes the hardlink@openssh.com extended packet-specific data into ep.
func (ep *POSIXRenameExtendedPacket) UnmarshalBinary(data []byte) (err error) {
return ep.UnmarshalFrom(sshfx.NewBuffer(data))
}
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