89 lines
2.8 KiB
Go
89 lines
2.8 KiB
Go
// Copyright or © or Copr. happyDNS (2022)
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//
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// contact@happydomain.org
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//
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// This software is a computer program whose purpose is to provide a modern
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// interface to interact with DNS systems.
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//
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// This software is governed by the CeCILL license under French law and abiding
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// by the rules of distribution of free software. You can use, modify and/or
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// redistribute the software under the terms of the CeCILL license as
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// circulated by CEA, CNRS and INRIA at the following URL
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// "http://www.cecill.info".
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//
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// As a counterpart to the access to the source code and rights to copy, modify
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// and redistribute granted by the license, users are provided only with a
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// limited warranty and the software's author, the holder of the economic
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// rights, and the successive licensors have only limited liability.
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//
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// In this respect, the user's attention is drawn to the risks associated with
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// loading, using, modifying and/or developing or reproducing the software by
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// the user in light of its specific status of free software, that may mean
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// that it is complicated to manipulate, and that also therefore means that it
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// is reserved for developers and experienced professionals having in-depth
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// computer knowledge. Users are therefore encouraged to load and test the
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// software's suitability as regards their requirements in conditions enabling
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// the security of their systems and/or data to be ensured and, more generally,
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// to use and operate it in the same conditions as regards security.
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//
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// The fact that you are presently reading this means that you have had
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// knowledge of the CeCILL license and that you accept its terms.
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package happydns
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import (
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"bytes"
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"crypto/rand"
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"encoding/base64"
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"errors"
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)
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const IDENTIFIER_LEN = 16
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type Identifier []byte
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func NewIdentifierFromString(src string) (id Identifier, err error) {
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return base64.RawURLEncoding.DecodeString(src)
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}
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func NewRandomIdentifier() (id Identifier, err error) {
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id = make([]byte, IDENTIFIER_LEN)
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if _, err = rand.Read(id); err != nil {
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return
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}
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return
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}
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func (i *Identifier) IsEmpty() bool {
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return len(*i) == 0
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}
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func (i Identifier) Equals(other Identifier) bool {
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return bytes.Equal(i, other)
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}
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func (i *Identifier) String() string {
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return base64.RawURLEncoding.EncodeToString(*i)
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}
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func (i Identifier) MarshalJSON() (dst []byte, err error) {
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dst = make([]byte, base64.RawURLEncoding.EncodedLen(len(i)))
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base64.RawURLEncoding.Encode(dst, i)
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dst = append([]byte{'"'}, dst...)
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dst = append(dst, '"')
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return
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}
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func (i *Identifier) UnmarshalJSON(src []byte) error {
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if len(src) < 2 || src[0] != '"' || src[len(src)-1] != '"' {
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return errors.New("Unvalid character found to encapsulate the JSON value")
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}
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*i = make([]byte, base64.RawURLEncoding.DecodedLen(len(src)-2))
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_, err := base64.RawURLEncoding.Decode(*i, src[1:len(src)-1])
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return err
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}
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