47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
package filexfer
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// ExtensionPair defines the extension-pair type defined in draft-ietf-secsh-filexfer-13.
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// This type is backwards-compatible with how draft-ietf-secsh-filexfer-02 defines extensions.
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//
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// Defined in: https://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-4.2
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type ExtensionPair struct {
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Name string
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Data string
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}
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// Len returns the number of bytes e would marshal into.
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func (e *ExtensionPair) Len() int {
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return 4 + len(e.Name) + 4 + len(e.Data)
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}
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// MarshalInto marshals e onto the end of the given Buffer.
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func (e *ExtensionPair) MarshalInto(buf *Buffer) {
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buf.AppendString(e.Name)
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buf.AppendString(e.Data)
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}
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// MarshalBinary returns e as the binary encoding of e.
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func (e *ExtensionPair) MarshalBinary() ([]byte, error) {
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buf := NewBuffer(make([]byte, 0, e.Len()))
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e.MarshalInto(buf)
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return buf.Bytes(), nil
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}
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// UnmarshalFrom unmarshals an ExtensionPair from the given Buffer into e.
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func (e *ExtensionPair) UnmarshalFrom(buf *Buffer) (err error) {
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if e.Name, err = buf.ConsumeString(); err != nil {
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return err
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}
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if e.Data, err = buf.ConsumeString(); err != nil {
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return err
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}
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return nil
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}
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// UnmarshalBinary decodes the binary encoding of ExtensionPair into e.
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func (e *ExtensionPair) UnmarshalBinary(data []byte) error {
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return e.UnmarshalFrom(NewBuffer(data))
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}
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