53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
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package satelliteauth
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import (
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"bytes"
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"encoding/base64"
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"io/ioutil"
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"strings"
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"github.com/zeebo/errs"
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)
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//TODO: change to JWT or Macaroon based auth
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// Token represents authentication data structure
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type Token struct {
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Payload []byte
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Signature []byte
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}
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// String returns base64URLEncoded data joined with .
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func (t Token) String() string {
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payload := base64.URLEncoding.EncodeToString(t.Payload)
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signature := base64.URLEncoding.EncodeToString(t.Signature)
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return strings.Join([]string{payload, signature}, ".")
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}
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// FromBase64URLString creates Token instance from base64URLEncoded string representation
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func FromBase64URLString(token string) (Token, error) {
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i := strings.Index(token, ".")
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if i < 0 {
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return Token{}, errs.New("invalid token format")
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}
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payload := token[:i]
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signature := token[i+1:]
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payloadDecoder := base64.NewDecoder(base64.URLEncoding, bytes.NewReader([]byte(payload)))
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signatureDecoder := base64.NewDecoder(base64.URLEncoding, bytes.NewReader([]byte(signature)))
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payloadBytes, err := ioutil.ReadAll(payloadDecoder)
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if err != nil {
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return Token{}, errs.New("decoding token's signature failed: %s", err)
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}
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signatureBytes, err := ioutil.ReadAll(signatureDecoder)
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if err != nil {
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return Token{}, errs.New("decoding token's body failed: %s", err)
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}
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return Token{Payload: payloadBytes, Signature: signatureBytes}, nil
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}
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