working commit

app/operator/grant.go

@@ -3,6 +3,7 @@ package operator
 import (
 	"context"
 	"fmt"
+	"regexp"
 
 	"mstore/app/descr"
 	"mstore/pkg/auxtool"
@@ -36,6 +37,12 @@ func (oper *Operator) CreateGrant(ctx context.Context, operID string, params *Cr
 		return res, err
 	}
 
+	_, err = regexp.Compile(params.Pattern)
+	if err != nil {
+		err := fmt.Errorf("Cannot compile regexp %s: %v", err)
+		return res, err
+	}
+
 	grantExists, _, err := oper.mdb.GetGrantByAccoundIDRightPattern(ctx, params.AccountID, params.Right, params.Pattern)
 	if err != nil {
 		return res, err