Merge pull request #52 from chchen7/fix/ausf-resync-nil-panic

fix: check context existence in resync

Author: Alonza0314

internal/sbi/processor/ue_authentication.go

@@ -250,8 +250,18 @@ func (p *Processor) UeAuthPostRequestProcedure(c *gin.Context, updateAuthenticat
 	var lastEapID uint8
 	if updateAuthenticationInfo.ResynchronizationInfo != nil {
 		logger.UeAuthLog.Warningln("Auts: ", updateAuthenticationInfo.ResynchronizationInfo.Auts)
+		if !ausf_context.CheckIfSuciSupiPairExists(supiOrSuci) {
+			logger.UeAuthLog.Warningln("Resync failed: SUCI mapping not found for ", supiOrSuci)
+			c.JSON(http.StatusNotFound, models.ProblemDetails{Status: 404, Cause: "USER_NOT_FOUND"})
+			return
+		}
 		ausfCurrentSupi := ausf_context.GetSupiFromSuciSupiMap(supiOrSuci)
 		logger.UeAuthLog.Warningln(ausfCurrentSupi)
+		if !ausf_context.CheckIfAusfUeContextExists(ausfCurrentSupi) {
+			logger.UeAuthLog.Warningln("Resync failed: AusfUeContext not found for SUPI: ", ausfCurrentSupi)
+			c.JSON(http.StatusNotFound, models.ProblemDetails{Status: 404, Cause: "USER_NOT_FOUND"})
+			return
+		}
 		ausfCurrentContext := ausf_context.GetAusfUeContext(ausfCurrentSupi)
 		logger.UeAuthLog.Warningln(ausfCurrentContext.Rand)
 		if updateAuthenticationInfo.ResynchronizationInfo.Rand == "" {