80 lines
2.0 KiB
Go
80 lines
2.0 KiB
Go
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package middleware
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import (
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"net/http"
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"strings"
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"github.com/flatrender/file-svc/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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"github.com/google/uuid"
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)
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const (
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KeyUserID = "user_id"
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KeyTenantID = "tenant_id"
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KeyIsAdmin = "is_admin"
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)
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func Auth(jwtSecret string) gin.HandlerFunc {
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return func(c *gin.Context) {
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header := c.GetHeader("Authorization")
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if !strings.HasPrefix(header, "Bearer ") {
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c.AbortWithStatusJSON(http.StatusUnauthorized, models.ErrorResponse{
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Error: models.APIError{Code: "unauthorized", Message: "missing bearer token"},
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})
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return
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}
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tokenStr := strings.TrimPrefix(header, "Bearer ")
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token, err := jwt.Parse(tokenStr, func(t *jwt.Token) (any, error) {
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if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, jwt.ErrSignatureInvalid
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}
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return []byte(jwtSecret), nil
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})
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if err != nil || !token.Valid {
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c.AbortWithStatusJSON(http.StatusUnauthorized, models.ErrorResponse{
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Error: models.APIError{Code: "unauthorized", Message: "invalid token"},
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})
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return
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}
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claims, ok := token.Claims.(jwt.MapClaims)
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if !ok {
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c.AbortWithStatusJSON(http.StatusUnauthorized, models.ErrorResponse{
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Error: models.APIError{Code: "unauthorized", Message: "invalid claims"},
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})
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return
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}
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userID, err := uuid.Parse(claims["sub"].(string))
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if err != nil {
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c.AbortWithStatusJSON(http.StatusUnauthorized, models.ErrorResponse{
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Error: models.APIError{Code: "unauthorized", Message: "invalid sub claim"},
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})
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return
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}
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tenantID, _ := uuid.Parse(claims["tenant_id"].(string))
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isAdmin, _ := claims["is_admin"].(bool)
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c.Set(KeyUserID, userID)
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c.Set(KeyTenantID, tenantID)
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c.Set(KeyIsAdmin, isAdmin)
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c.Next()
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}
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}
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func AdminOnly() gin.HandlerFunc {
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return func(c *gin.Context) {
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if isAdmin, _ := c.Get(KeyIsAdmin); isAdmin != true {
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c.AbortWithStatusJSON(http.StatusForbidden, models.ErrorResponse{
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Error: models.APIError{Code: "forbidden", Message: "admin only"},
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})
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return
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}
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c.Next()
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}
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}
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