35c3553870
Migrate from U2F to Webauthn Co-authored-by: Andrew Thornton <art27@cantab.net> Co-authored-by: 6543 <6543@obermui.de> Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
42 lines
1.1 KiB
Go
Vendored
42 lines
1.1 KiB
Go
Vendored
package protocol
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import (
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"bytes"
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"encoding/base64"
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"reflect"
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)
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// URLEncodedBase64 represents a byte slice holding URL-encoded base64 data.
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// When fields of this type are unmarshaled from JSON, the data is base64
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// decoded into a byte slice.
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type URLEncodedBase64 []byte
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// UnmarshalJSON base64 decodes a URL-encoded value, storing the result in the
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// provided byte slice.
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func (dest *URLEncodedBase64) UnmarshalJSON(data []byte) error {
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if bytes.Equal(data, []byte("null")) {
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return nil
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}
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// Trim the leading spaces
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data = bytes.Trim(data, "\"")
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out := make([]byte, base64.RawURLEncoding.DecodedLen(len(data)))
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n, err := base64.RawURLEncoding.Decode(out, data)
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if err != nil {
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return err
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}
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v := reflect.ValueOf(dest).Elem()
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v.SetBytes(out[:n])
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return nil
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}
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// MarshalJSON base64 encodes a non URL-encoded value, storing the result in the
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// provided byte slice.
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func (data URLEncodedBase64) MarshalJSON() ([]byte, error) {
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if data == nil {
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return []byte("null"), nil
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}
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return []byte(`"` + base64.RawURLEncoding.EncodeToString(data) + `"`), nil
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}
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