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// Copyright (c) 2020-2024 Bryan Frimin <bryan@frimin.fr>.
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.
package privatebin
import (
"encoding/base64"
"encoding/json"
)
type (
AData struct {
Spec Spec
Formatter string
OpenDiscussion bool
BurnAfterReading bool
}
Spec struct {
IV []byte
Salt []byte
Iterations int
KeySize int
TagSize int
Algorithm EncryptionAlgorithm
Mode EncryptionMode
Compression CompressionAlgorithm
}
)
func (adata AData) MarshalJSON() ([]byte, error) {
return json.Marshal(
[4]any{
adata.Spec,
adata.Formatter,
btoi(adata.OpenDiscussion),
btoi(adata.BurnAfterReading),
},
)
}
func (adata *AData) UnmarshalJSON(data []byte) error {
var values [4]json.RawMessage
err := json.Unmarshal(data, &values)
if err != nil {
return err
}
var spec Spec
err = json.Unmarshal(values[0], &spec)
if err != nil {
return err
}
var (
formatter string
openDiscussion, burnAterReading int
)
err = json.Unmarshal(values[1], &formatter)
if err != nil {
return err
}
err = json.Unmarshal(values[2], &openDiscussion)
if err != nil {
return err
}
err = json.Unmarshal(values[3], &burnAterReading)
if err != nil {
return err
}
*adata = AData{spec, formatter, itob(openDiscussion), itob(burnAterReading)}
return nil
}
func (spec Spec) MarshalJSON() ([]byte, error) {
return json.Marshal(
[8]any{
base64.StdEncoding.EncodeToString(spec.IV),
base64.StdEncoding.EncodeToString(spec.Salt),
spec.Iterations,
spec.KeySize,
spec.TagSize,
spec.Algorithm,
spec.Mode,
spec.Compression,
},
)
}
func (spec *Spec) UnmarshalJSON(data []byte) error {
var values [8]json.RawMessage
err := json.Unmarshal(data, &values)
if err != nil {
return err
}
var (
encodedIv, encodedSalt string
iv, salt []byte
iterations, keySize, tagSize int
algorithm EncryptionAlgorithm
mode EncryptionMode
compression CompressionAlgorithm
)
err = json.Unmarshal(values[0], &encodedIv)
if err != nil {
return err
}
iv, err = decode64(encodedIv)
if err != nil {
return err
}
err = json.Unmarshal(values[1], &encodedSalt)
if err != nil {
return err
}
salt, err = decode64(encodedSalt)
if err != nil {
return err
}
err = json.Unmarshal(values[2], &iterations)
if err != nil {
return err
}
err = json.Unmarshal(values[3], &keySize)
if err != nil {
return err
}
err = json.Unmarshal(values[4], &tagSize)
if err != nil {
return err
}
err = json.Unmarshal(values[5], &algorithm)
if err != nil {
return err
}
err = json.Unmarshal(values[6], &mode)
if err != nil {
return err
}
err = json.Unmarshal(values[7], &compression)
if err != nil {
return err
}
*spec = Spec{iv, salt, iterations, keySize, tagSize, algorithm, mode, compression}
return nil
}
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