Blizzard
98 lines
2.5 KiB
Go
98 lines
2.5 KiB
Go
package jwt
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import (
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"errors"
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"time"
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jwtv5 "github.com/golang-jwt/jwt/v5"
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)
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var (
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ErrTokenValid = errors.New("未知错误")
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ErrTokenExpired = errors.New("token已过期")
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ErrTokenNotValidYet = errors.New("token尚未激活")
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ErrTokenMalformed = errors.New("这不是一个token")
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ErrTokenSignatureInvalid = errors.New("无效签名")
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ErrTokenInvalid = errors.New("无法处理此token")
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)
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// BaseClaims 基础Claims
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type BaseClaims struct {
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ID string `json:"id"`
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Account string `json:"account"`
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}
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// CustomClaims 自定义Claims
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type CustomClaims struct {
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BaseClaims
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BufferTime int64 `json:"bufferTime"`
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jwtv5.RegisteredClaims
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}
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// JWT JWT工具
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type JWT struct {
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SigningKey []byte
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}
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// NewJWT 创建JWT实例
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func NewJWT(signingKey string) *JWT {
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return &JWT{
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SigningKey: []byte(signingKey),
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}
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}
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// CreateClaims 创建Claims
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func (j *JWT) CreateClaims(baseClaims BaseClaims, bufferTime, expiresTime time.Duration, issuer string) CustomClaims {
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return CustomClaims{
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BaseClaims: baseClaims,
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BufferTime: int64(bufferTime / time.Second),
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RegisteredClaims: jwtv5.RegisteredClaims{
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Audience: jwtv5.ClaimStrings{"sundynix"},
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NotBefore: jwtv5.NewNumericDate(time.Now().Add(-1000)),
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ExpiresAt: jwtv5.NewNumericDate(time.Now().Add(expiresTime)),
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Issuer: issuer,
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},
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}
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}
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// CreateToken 创建token
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func (j *JWT) CreateToken(claims CustomClaims) (string, error) {
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token := jwtv5.NewWithClaims(jwtv5.SigningMethodHS256, claims)
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return token.SignedString(j.SigningKey)
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}
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// ParseToken 解析token
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func (j *JWT) ParseToken(tokenString string) (*CustomClaims, error) {
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token, err := jwtv5.ParseWithClaims(tokenString, &CustomClaims{}, func(token *jwtv5.Token) (interface{}, error) {
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return j.SigningKey, nil
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})
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if err != nil {
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switch {
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case errors.Is(err, jwtv5.ErrTokenExpired):
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return nil, ErrTokenExpired
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case errors.Is(err, jwtv5.ErrTokenNotValidYet):
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return nil, ErrTokenNotValidYet
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case errors.Is(err, jwtv5.ErrTokenMalformed):
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return nil, ErrTokenMalformed
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case errors.Is(err, jwtv5.ErrTokenSignatureInvalid):
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return nil, ErrTokenSignatureInvalid
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default:
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return nil, ErrTokenInvalid
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}
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}
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if token != nil {
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if claims, ok := token.Claims.(*CustomClaims); ok && token.Valid {
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return claims, nil
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}
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}
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return nil, ErrTokenInvalid
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}
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// GetTokenFromHeader 从Authorization头中提取token
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func GetTokenFromHeader(authHeader string) string {
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if len(authHeader) > 7 && authHeader[:7] == "Bearer " {
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return authHeader[7:]
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}
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return authHeader
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}
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