1 files changed, 0 insertions, 162 deletions
diff --git a/cmd/resolver/options.go b/cmd/resolver/options.go
deleted file mode 100644
index 95d9aeb..0000000
--- a/cmd/resolver/options.go
+++ /dev/null
@@ -1,162 +0,0 @@
-// SPDX-FileCopyrightText: 2018 M. Shulhan <ms@kilabit.info>
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-package main
-
-import (
-	"errors"
-	"flag"
-	"fmt"
-	"os"
-	"strings"
-
-	"github.com/shuLhan/share/lib/dns"
-)
-
-// List of error messages.
-var (
-	errQueryName   = errors.New("invalid or empty query name")
-	errRecordType  = errors.New("unknown query type")
-	errRecordClass = errors.New("unknown query class")
-)
-
-// List of command line usages.
-const (
-	usageInsecure   = `Skip verifying server certificate`
-	usageNameServer = "Parent name server address using scheme based.\n" +
-		"\tFor example,\n" +
-		"\tudp://35.240.172.103:53 for querying with UDP,\n" +
-		"\ttcp://35.240.172.103:53 for querying with TCP,\n" +
-		"\thttps://35.240.172:103:853 for querying with DNS over TLS, and\n" +
-		"\thttps://kilabit.info/dns-query for querying with DNS over HTTPS."
-
-	usageType = "Query type.  Valid values are either A, NS, CNAME, SOA,\n" +
-		"\tMB, MG, MR, NULL, WKS, PTR, HINFO, MINFO, MX, TXT, AAAA, or SRV.\n" +
-		"\tDefault value is A."
-
-	usageClass = "Query class.  Valid values are either IN, CS, HS.\n" +
-		"\tDefault value is IN."
-)
-
-type options struct {
-	sqtype  string
-	sqclass string
-
-	nameserver string
-	qname      string
-	qtype      dns.RecordType
-	qclass     dns.RecordClass
-
-	insecure bool
-}
-
-func help() {
-	fmt.Println(`
-= resolver: command line interface for DNS query
-
-==  Usage
-
-	resolver [-ns nameserver] [-insecure] [-t string] [-c string] [domain|address]
-
-==  Options
-
--ns nameserver
-
-	` + usageNameServer + `
-
--insecure
-
-	` + usageInsecure + `
-
--t string
-
-	` + usageType + `
-
--c string
-
-	` + usageClass + `
-
-==  Examples
-
-Query the MX records using UDP on name server 35.240.172.103,
-
-	$ resolver -ns udp://35.240.172.103 -t MX kilabit.info
-
-Query the IPv4 records of domain name "kilabit.info" using DNS over TLS on
-name server 35.240.172.103,
-
-	$ resolver -ns https://35.240.172.103 -insecure kilabit.info
-
-Query the IPv4 records of domain name "kilabit.info" using DNS over HTTPS on
-name server kilabit.info,
-
-	$ resolver -ns https://kilabit.info/dns-query kilabit.info`)
-}
-
-func newOptions() (*options, error) {
-	var optHelp bool
-
-	opts := new(options)
-
-	flag.StringVar(&opts.nameserver, "ns", "", usageNameServer)
-	flag.BoolVar(&opts.insecure, "insecure", false, usageInsecure)
-	flag.BoolVar(&optHelp, "h", false, "")
-	flag.StringVar(&opts.sqtype, "t", "A", usageType)
-	flag.StringVar(&opts.sqclass, "c", "IN", usageClass)
-
-	flag.Parse()
-
-	args := flag.Args()
-
-	if optHelp {
-		help()
-		os.Exit(1)
-	}
-
-	if len(args) == 0 {
-		help()
-		os.Exit(1)
-	}
-
-	opts.qname = args[0]
-
-	err := opts.parseQType()
-	if err != nil {
-		help()
-		os.Exit(1)
-	}
-
-	err = opts.parseQClass()
-	if err != nil {
-		help()
-		os.Exit(1)
-	}
-
-	return opts, nil
-}
-
-func (opts *options) parseQType() error {
-	var ok bool
-
-	opts.sqtype = strings.ToUpper(opts.sqtype)
-
-	opts.qtype, ok = dns.RecordTypes[opts.sqtype]
-	if !ok {
-		return errRecordType
-	}
-
-	return nil
-}
-
-func (opts *options) parseQClass() error {
-	var ok bool
-
-	opts.sqclass = strings.ToUpper(opts.sqclass)
-
-	opts.qclass, ok = dns.RecordClasses[opts.sqclass]
-	if !ok {
-		return errRecordClass
-	}
-
-	return nil
-}