| package openssh |
| |
| import ( |
| sshfx "github.com/pkg/sftp/encoding/ssh/filexfer" |
| ) |
| |
| const extensionHardlink = "hardlink@openssh.com" |
| |
| func init() { |
| sshfx.RegisterExtendedPacketType(extensionHardlink, func() sshfx.ExtendedData { |
| return new(HardlinkExtendedPacket) |
| }) |
| } |
| |
| // ExtensionHardlink returns an ExtensionPair suitable to append into an sshfx.InitPacket or sshfx.VersionPacket. |
| func ExtensionHardlink() *sshfx.ExtensionPair { |
| return &sshfx.ExtensionPair{ |
| Name: extensionHardlink, |
| Data: "1", |
| } |
| } |
| |
| // HardlinkExtendedPacket defines the hardlink@openssh.com extend packet. |
| type HardlinkExtendedPacket struct { |
| OldPath string |
| NewPath string |
| } |
| |
| // MarshalPacket returns ep as a two-part binary encoding of the full extended packet. |
| func (ep *HardlinkExtendedPacket) MarshalPacket(reqid uint32, b []byte) (header, payload []byte, err error) { |
| p := &sshfx.ExtendedPacket{ |
| ExtendedRequest: extensionHardlink, |
| |
| 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 *HardlinkExtendedPacket) 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 *HardlinkExtendedPacket) MarshalBinary() ([]byte, error) { |
| // string(oldpath) + string(newpath) |
| size := 4 + len(ep.OldPath) + 4 + len(ep.NewPath) |
| |
| buf := sshfx.NewBuffer(make([]byte, size)) |
| ep.MarshalInto(buf) |
| return buf.Bytes(), nil |
| } |
| |
| // UnmarshalFrom decodes the hardlink@openssh.com extended packet-specific data from buf. |
| func (ep *HardlinkExtendedPacket) UnmarshalFrom(buf *sshfx.Buffer) (err error) { |
| if ep.OldPath, err = buf.ConsumeString(); err != nil { |
| return err |
| } |
| |
| if ep.NewPath, err = buf.ConsumeString(); err != nil { |
| return err |
| } |
| |
| return nil |
| } |
| |
| // UnmarshalBinary decodes the hardlink@openssh.com extended packet-specific data into ep. |
| func (ep *HardlinkExtendedPacket) UnmarshalBinary(data []byte) (err error) { |
| return ep.UnmarshalFrom(sshfx.NewBuffer(data)) |
| } |