157 lines
3.3 KiB
Go
157 lines
3.3 KiB
Go
package middleware
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import (
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"errors"
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"fmt"
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"net/http"
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"strings"
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config "learnsteam/cslms-api/configs"
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"learnsteam/cslms-api/internal/database"
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"learnsteam/cslms-api/internal/models"
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"github.com/gin-gonic/gin"
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"github.com/golang-jwt/jwt/v5"
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)
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func Auth(permission string) gin.HandlerFunc {
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return func(c *gin.Context) {
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sub, err := UserID(c.Request)
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if err != nil {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
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c.Abort()
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return
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}
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role, err := Role(c.Request)
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if err != nil {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
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c.Abort()
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return
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}
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if permission != "member" && *role != permission {
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fmt.Println("permission", permission, "role", *role)
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c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
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c.Abort()
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return
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}
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valid := Valid(c.Request)
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if !valid {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "token is not valid"})
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c.Abort()
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return
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}
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c.Set("token", Extract(c.Request))
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c.Set("sub", sub)
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c.Set("role", role)
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c.Next()
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}
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}
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func Permission(permission *string) gin.HandlerFunc {
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return func(c *gin.Context) {
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sub, err := UserID(c.Request)
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if err != nil {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
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c.Abort()
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return
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}
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role, err := Role(c.Request)
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if err != nil {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
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c.Abort()
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return
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}
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if role != permission {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "unauthorized"})
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c.Abort()
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return
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}
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valid := Valid(c.Request)
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if !valid {
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c.JSON(http.StatusUnauthorized, gin.H{"error": "token is not valid"})
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c.Abort()
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return
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}
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c.Set("token", Extract(c.Request))
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c.Set("sub", sub)
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c.Set("role", role)
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c.Next()
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}
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}
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func Extract(r *http.Request) string {
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authorization := r.Header.Get("Authorization")
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strArr := strings.Split(authorization, " ")
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if len(strArr) == 2 {
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return strArr[1]
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}
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return ""
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}
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func Verify(r *http.Request) (*jwt.Token, error) {
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tokenString := Extract(r)
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jwtToken, err := jwt.Parse(tokenString, func(jwtToken *jwt.Token) (interface{}, error) {
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if _, ok := jwtToken.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unexpected signing method: %v", jwtToken.Header["alg"])
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}
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return []byte(config.SECRET_KEY), nil
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})
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return jwtToken, err
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}
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func UserID(r *http.Request) (int64, error) {
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jwtToken, err := Verify(r)
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if err != nil {
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fmt.Println(err)
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return -1, err
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}
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claims, ok := jwtToken.Claims.(jwt.MapClaims)
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if !ok || !jwtToken.Valid {
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return -1, errors.New("refresh token is invalid")
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}
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sub := claims["sub"].(float64)
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user_id := int64(sub)
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if err != nil {
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return -1, err
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}
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fmt.Println(user_id)
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return user_id, nil
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}
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func Role(r *http.Request) (*string, error) {
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jwtToken, err := Verify(r)
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if err != nil {
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return nil, err
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}
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claims, ok := jwtToken.Claims.(jwt.MapClaims)
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if !ok || !jwtToken.Valid {
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return nil, errors.New("refresh token is invalid")
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}
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role := claims["role"].(string)
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return &role, nil
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}
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func Valid(r *http.Request) bool {
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tokenString := Extract(r)
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var token models.Token
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fmt.Println(tokenString)
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err := database.DB.Where("token = ? AND status = ?", tokenString, "on").First(&token).Error
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fmt.Println(&token)
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return err == nil
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}
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