mirror of
https://github.com/superseriousbusiness/gotosocial.git
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105 lines
2.5 KiB
Go
105 lines
2.5 KiB
Go
package generates
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import (
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"context"
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"encoding/base64"
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"strings"
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"time"
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"github.com/superseriousbusiness/oauth2/v4"
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"github.com/superseriousbusiness/oauth2/v4/errors"
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"github.com/golang-jwt/jwt"
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"github.com/google/uuid"
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)
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// JWTAccessClaims jwt claims
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type JWTAccessClaims struct {
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jwt.StandardClaims
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}
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// Valid claims verification
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func (a *JWTAccessClaims) Valid() error {
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if time.Unix(a.ExpiresAt, 0).Before(time.Now()) {
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return errors.ErrInvalidAccessToken
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}
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return nil
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}
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// NewJWTAccessGenerate create to generate the jwt access token instance
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func NewJWTAccessGenerate(kid string, key []byte, method jwt.SigningMethod) *JWTAccessGenerate {
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return &JWTAccessGenerate{
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SignedKeyID: kid,
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SignedKey: key,
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SignedMethod: method,
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}
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}
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// JWTAccessGenerate generate the jwt access token
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type JWTAccessGenerate struct {
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SignedKeyID string
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SignedKey []byte
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SignedMethod jwt.SigningMethod
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}
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// Token based on the UUID generated token
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func (a *JWTAccessGenerate) Token(ctx context.Context, data *oauth2.GenerateBasic, isGenRefresh bool) (string, string, error) {
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claims := &JWTAccessClaims{
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StandardClaims: jwt.StandardClaims{
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Audience: data.Client.GetID(),
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Subject: data.UserID,
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ExpiresAt: data.TokenInfo.GetAccessCreateAt().Add(data.TokenInfo.GetAccessExpiresIn()).Unix(),
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},
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}
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token := jwt.NewWithClaims(a.SignedMethod, claims)
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if a.SignedKeyID != "" {
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token.Header["kid"] = a.SignedKeyID
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}
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var key interface{}
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if a.isEs() {
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v, err := jwt.ParseECPrivateKeyFromPEM(a.SignedKey)
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if err != nil {
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return "", "", err
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}
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key = v
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} else if a.isRsOrPS() {
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v, err := jwt.ParseRSAPrivateKeyFromPEM(a.SignedKey)
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if err != nil {
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return "", "", err
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}
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key = v
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} else if a.isHs() {
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key = a.SignedKey
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} else {
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return "", "", errors.New("unsupported sign method")
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}
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access, err := token.SignedString(key)
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if err != nil {
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return "", "", err
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}
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refresh := ""
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if isGenRefresh {
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t := uuid.NewSHA1(uuid.Must(uuid.NewRandom()), []byte(access)).String()
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refresh = base64.URLEncoding.EncodeToString([]byte(t))
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refresh = strings.ToUpper(strings.TrimRight(refresh, "="))
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}
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return access, refresh, nil
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}
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func (a *JWTAccessGenerate) isEs() bool {
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return strings.HasPrefix(a.SignedMethod.Alg(), "ES")
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}
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func (a *JWTAccessGenerate) isRsOrPS() bool {
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isRs := strings.HasPrefix(a.SignedMethod.Alg(), "RS")
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isPs := strings.HasPrefix(a.SignedMethod.Alg(), "PS")
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return isRs || isPs
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}
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func (a *JWTAccessGenerate) isHs() bool {
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return strings.HasPrefix(a.SignedMethod.Alg(), "HS")
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}
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