package main import ( "fmt" "strings" "github.com/miekg/dns" "github.com/urfave/cli/v2" ) func (hub *Hub) Lookup(c *cli.Context) error { hub.prepareQuestions() err := hub.Resolver.Lookup(hub.Questions) if err != nil { fmt.Println(err) hub.Logger.Error(err) } return nil } // prepareQuestions iterates on list of domain names // and prepare a list of questions // sent to the server with all possible combinations. func (hub *Hub) prepareQuestions() { var question dns.Question for _, name := range hub.QueryFlags.QNames.Value() { question.Name = dns.Fqdn(name) // iterate on a list of query types. for _, q := range hub.QueryFlags.QTypes.Value() { question.Qtype = dns.StringToType[strings.ToUpper(q)] // iterate on a list of query classes. for _, c := range hub.QueryFlags.QClasses.Value() { question.Qclass = dns.StringToClass[strings.ToUpper(c)] // append a new question for each possible pair. hub.Questions = append(hub.Questions, question) } } } }