/
jwt.go
108 lines (97 loc) · 2.39 KB
/
jwt.go
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package auth
import (
"fmt"
"net/http"
"time"
"github.com/SermoDigital/jose/crypto"
"github.com/SermoDigital/jose/jws"
"github.com/SermoDigital/jose/jwt"
"github.com/gin-gonic/gin"
logging "github.com/op/go-logging"
uuid "github.com/satori/go.uuid"
)
//Jwt jwt helper
type Jwt struct {
Key []byte `inject:"jwt.key"`
Method crypto.SigningMethod `inject:"jwt.method"`
Logger *logging.Logger `inject:""`
Dao *Dao `inject:""`
}
//Validate check jwt
func (p *Jwt) Validate(buf []byte) (jwt.Claims, error) {
tk, err := jws.ParseJWT(buf)
if err != nil {
return nil, err
}
err = tk.Validate(p.Key, p.Method)
return tk.Claims(), err
}
//MustAdminHandler check must have admin role
func (p *Jwt) MustAdminHandler() gin.HandlerFunc {
return p.MustRolesHandler("admin")
}
//MustRolesHandler check must have one roles at least
func (p *Jwt) MustRolesHandler(roles ...string) gin.HandlerFunc {
return func(c *gin.Context) {
u := c.MustGet("user").(*User)
for _, a := range p.Dao.Authority(u.ID, "-", 0) {
for _, r := range roles {
if a == r {
return
}
}
}
c.String(http.StatusForbidden, "don't have roles %s", roles)
}
}
//CurrentUserHandler inject current user
func (p *Jwt) CurrentUserHandler(must bool) gin.HandlerFunc {
return func(c *gin.Context) {
tkn, err := jws.ParseFromRequest(c.Request, jws.Compact)
if err != nil {
if must {
c.String(http.StatusInternalServerError, err.Error())
c.Abort()
}
return
}
if err := tkn.Verify(p.Key, p.Method); err != nil {
if must {
c.String(http.StatusUnauthorized, err.Error())
c.Abort()
}
return
}
var user User
data := tkn.Payload().(map[string]interface{})
if err := p.Dao.Db.Where("uid = ?", data["uid"]).First(&user).Error; err != nil {
if must {
c.String(http.StatusUnauthorized, err.Error())
c.Abort()
}
return
}
if !user.IsAvailable() {
if must {
c.String(http.StatusForbidden, "bad user status")
c.Abort()
}
return
}
c.Set("user", &user)
}
}
func (p *Jwt) key(kid string) string {
return fmt.Sprintf("token://%s", kid)
}
//Sum create jwt token
func (p *Jwt) Sum(cm jws.Claims, days int) ([]byte, error) {
kid := uuid.NewV4()
now := time.Now()
cm.SetNotBefore(now)
cm.SetExpiration(now.AddDate(0, 0, days))
cm.Set("kid", kid)
//TODO using kid
jt := jws.NewJWT(cm, p.Method)
return jt.Serialize(p.Key)
}