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Auth.go
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Auth.go
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package auth
import (
"fmt"
"net/http"
"os"
"strings"
"time"
models "github.com/annsbakehouse/golibraries/models"
jwt "github.com/dgrijalva/jwt-go"
"github.com/gin-gonic/gin"
)
func ExtractToken(c *gin.Context) string {
//getting token from bearer header
bearerToken := c.Request.Header.Get("Authorization")
if len(strings.Split(bearerToken, " ")) == 2 {
return strings.Split(bearerToken, " ")[1]
}
return ""
}
//getting token to claims
func ExtractTokenID(c *gin.Context) (map[string]interface{}, error) {
tokenString := ExtractToken(c)
token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
}
return []byte(os.Getenv("secretKey")), nil
})
if err != nil {
return nil, err
}
claims, ok := token.Claims.(jwt.MapClaims)
if ok && token.Valid {
return claims,nil
}
return nil, nil
}
//token validation
func TokenValid(c *gin.Context) {
tokenString := ExtractToken(c)
_, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
}
_,dbReader,err := models.DbConnect()
if err!=nil {
return nil, fmt.Errorf("Signing Token Expired")
}
tt := time.Now()
tFormat := tt.Format("2006-01-02 15:04:05")
var activeUserModel models.ActiveUserModel
var idActiveUser string
recActiveUser := dbReader.Select("id").First(&activeUserModel,"token=? AND expired_on>?",tokenString,tFormat).Scan(&idActiveUser)
models.ActiveUser = idActiveUser
if recActiveUser.Error==nil && recActiveUser.RowsAffected==1 {
return []byte(os.Getenv("secretKey")), nil
}
return nil, fmt.Errorf("Signing Token Expired")
})
if err != nil {
c.JSON(http.StatusUnauthorized, gin.H{
"status": http.StatusUnauthorized,
"message": "Your have wrong Authorization",
"error":true,
})
c.Abort()
}
}