package main import ( "errors" "fmt" "strconv" "kvas2-go/models" "kvas2-go/pkg/ip-helper" ) type GroupOptions struct { Enabled bool FWMark uint32 Table uint16 } type Group struct { *models.Group options GroupOptions } func (g *Group) Enable() error { if g.options.Enabled { return nil } fwmark, err := ipHelper.GetUnusedFwMark(1) if err != nil { return fmt.Errorf("error while getting free fwmark: %w", err) } table, err := ipHelper.GetUnusedTable(1) if err != nil { return fmt.Errorf("error while getting free table: %w", err) } fwmarkStr := strconv.Itoa(int(fwmark)) tableStr := strconv.Itoa(int(table)) out, err := ipHelper.ExecIp("rule", "add", "fwmark", fwmarkStr, "table", tableStr) if err != nil { return err } if len(out) != 0 { return errors.New(string(out)) } g.options.Enabled = true g.options.FWMark = fwmark g.options.Table = table return nil } func (g *Group) Disable() error { if !g.options.Enabled { return nil } fwmarkStr := strconv.Itoa(int(g.options.FWMark)) tableStr := strconv.Itoa(int(g.options.Table)) out, err := ipHelper.ExecIp("rule", "del", "fwmark", fwmarkStr, "table", tableStr) if err != nil { return err } if len(out) != 0 { return errors.New(string(out)) } g.options.Enabled = false g.options.FWMark = 0 g.options.Table = 0 return nil }