96 lines
2.3 KiB
Go
96 lines
2.3 KiB
Go
package utils
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import (
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"errors"
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"fmt"
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"strconv"
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"time"
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"github.com/golang-jwt/jwt/v4"
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)
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const (
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TokenTypeAccess = "access"
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TokenTypeRefresh = "refresh"
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)
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type JWT struct {
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Secret string
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TTL int
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Issuer string
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}
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func NewJWT(secret, issuer string, ttlSeconds int) (*JWT, error) {
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if secret == "" {
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return nil, errors.New("jwt secret empty")
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}
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if ttlSeconds < 1 {
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return nil, errors.New("jwt ttl invalid")
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}
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return &JWT{
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Secret: secret,
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TTL: ttlSeconds,
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Issuer: issuer,
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}, nil
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}
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type Claims struct {
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UserID int64 `json:"user_id"`
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Name string `json:"name"`
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Avatar string `json:"avatar"`
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Mobile string `json:"mobile"`
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Gender uint8 `json:"gender"`
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Birthday string `json:"birthday"`
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Type uint8 `json:"type"` // 1销售 2门店 3普通用户
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ClientCode string `json:"client_code"`
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SaleId int64 `json:"sale_id,omitempty"`
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StoreId int64 `json:"store_id,omitempty"`
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TokenType string `json:"token_type"` // access | refresh
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jwt.RegisteredClaims
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}
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func (j *JWT) Sign(claims Claims) (string, error) {
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if j == nil {
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return "", errors.New("jwt not initialized")
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}
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now := time.Now()
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claims.Issuer = j.Issuer
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claims.IssuedAt = jwt.NewNumericDate(now)
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claims.ExpiresAt = jwt.NewNumericDate(now.Add(time.Duration(j.TTL) * time.Second))
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claims.ID = strconv.FormatInt(claims.UserID, NumberTen)
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString([]byte(j.Secret))
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}
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func (j *JWT) Parse(tokenString string) (*Claims, error) {
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if j == nil {
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return nil, errors.New("jwt not initialized")
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}
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token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
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}
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return []byte(j.Secret), nil
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})
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if err != nil {
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return nil, err
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}
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claims, ok := token.Claims.(*Claims)
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if !ok || !token.Valid {
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return nil, errors.New("invalid token")
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}
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return claims, nil
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}
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func (j *JWT) ParseExpect(tokenString, expectType string) (*Claims, error) {
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claims, err := j.Parse(tokenString)
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if err != nil {
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return nil, err
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}
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if claims.TokenType != expectType {
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return nil, fmt.Errorf("unexpected token type: %s", claims.TokenType)
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}
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return claims, nil
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}
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