package main import ( "encoding/json" "fmt" "net" "strconv" "strings" "time" "git.froth.zone/sam/awl/logawl" "git.froth.zone/sam/awl/query" "git.froth.zone/sam/awl/util" "github.com/miekg/dns" "github.com/urfave/cli/v2" ) func doQuery(c *cli.Context) error { var ( err error resp util.Response isHTTPS bool Logger = logawl.New() //init logger ) resp.Answers, err = parseArgs(c.Args().Slice()) if err != nil { Logger.Error("Unable to parse args") return err } port := c.Int("port") if c.Bool("debug") { Logger.SetLevel(3) } Logger.Debug("Starting awl") // If port is not set, set it if port == 0 { if c.Bool("tls") || c.Bool("quic") { port = 853 } else { port = 53 } } if c.Bool("https") || strings.HasPrefix(resp.Answers.Server, "https://") { // add https:// if it doesn't already exist if !strings.HasPrefix(resp.Answers.Server, "https://") { resp.Answers.Server = "https://" + resp.Answers.Server } isHTTPS = true } else { resp.Answers.Server = net.JoinHostPort(resp.Answers.Server, strconv.Itoa(port)) } // Process the IP/Phone number so a PTR/NAPTR can be done if c.Bool("reverse") { if dns.TypeToString[resp.Answers.Request] == "A" { resp.Answers.Request = dns.StringToType["PTR"] } resp.Answers.Name, err = util.ReverseDNS(resp.Answers.Name, dns.TypeToString[resp.Answers.Request]) if err != nil { return err } } // if the domain is not canonical, make it canonical if !strings.HasSuffix(resp.Answers.Name, ".") { resp.Answers.Name = fmt.Sprintf("%s.", resp.Answers.Name) } msg := new(dns.Msg) msg.SetQuestion(resp.Answers.Name, resp.Answers.Request) // Make this authoritative (does this do anything?) if c.Bool("aa") { msg.Authoritative = true } // Set truncated flag (why) if c.Bool("tc") { msg.Truncated = true } // Set the zero flag if requested (does nothing) if c.Bool("z") { Logger.Debug("Setting message to zero") msg.Zero = true } // Disable DNSSEC validation if c.Bool("cd") { msg.CheckingDisabled = true } // Disable wanting recursion if c.Bool("no-rd") { msg.RecursionDesired = false } // Disable recursion being available (I don't think this does anything) if c.Bool("no-ra") { msg.RecursionAvailable = false } // Set DNSSEC if requested if c.Bool("dnssec") { Logger.Debug("Using DNSSEC") msg.SetEdns0(1232, true) } var in *dns.Msg // Make the DNS request if isHTTPS { in, resp.Answers.RTT, err = query.ResolveHTTPS(msg, resp.Answers.Server) } else if c.Bool("quic") { in, resp.Answers.RTT, err = query.ResolveQUIC(msg, resp.Answers.Server) } else { d := new(dns.Client) // Set TCP/UDP, depending on flags if c.Bool("tcp") || c.Bool("tls") { d.Net = "tcp" } else { d.Net = "udp" } // Set IPv4 or IPv6, depending on flags switch { case c.Bool("4"): d.Net += "4" case c.Bool("6"): d.Net += "6" } // Add TLS, if requested if c.Bool("tls") { d.Net += "-tls" } in, resp.Answers.RTT, err = d.Exchange(msg, resp.Answers.Server) if err != nil { return err } // If UDP truncates, use TCP instead (unless truncation is to be ignored) if in.MsgHdr.Truncated && !c.Bool("no-truncate") { fmt.Printf(";; Truncated, retrying with TCP\n\n") d.Net = "tcp" switch { case c.Bool("4"): d.Net += "4" case c.Bool("6"): d.Net += "6" } in, resp.Answers.RTT, err = d.Exchange(msg, resp.Answers.Server) } } if err != nil { return err } if c.Bool("json") { json, err := json.MarshalIndent(in, "", " ") if err != nil { return err } fmt.Println(string(json)) } else { if !c.Bool("short") { // Print everything fmt.Println(in) fmt.Println(";; Query time:", resp.Answers.RTT) fmt.Println(";; SERVER:", resp.Answers.Server) fmt.Println(";; WHEN:", time.Now().Format(time.RFC1123Z)) fmt.Println(";; MSG SIZE rcvd:", in.Len()) } else { // Print just the responses, nothing else for _, res := range in.Answer { temp := strings.Split(res.String(), "\t") fmt.Println(temp[len(temp)-1]) } } } return nil }