tools: import dnsd from xekrazyv1.0.1

4 files changed, 274 insertions, 10 deletions

diff --git a/go.mod b/go.mod
index 6953327..cd2e681 100644
--- a/go.mod
+++ b/go.mod
@@ -1,35 +1,29 @@
 module github.com/Xe/x
 
 require (
+	git.xeserv.us/xena/xekrazy v0.0.0-20190323225600-a1897cd1ff90 // indirect
 	github.com/McKael/madon/v2 v2.0.0-20180929094633-c679abc985d6
-	github.com/aclements/go-moremath v0.0.0-20180329182055-b1aff36309c7 // indirect
 	github.com/bwmarrin/discordgo v0.19.0
 	github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd
 	github.com/dgryski/go-failure v0.0.0-20151001134759-4963dbd58fd0
-	github.com/dgryski/go-onlinestats v0.0.0-20170612111826-1c7d19468768 // indirect
 	github.com/disintegration/imaging v1.5.0
 	github.com/facebookgo/ensure v0.0.0-20160127193407-b4ab57deab51
-	github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 // indirect
-	github.com/facebookgo/subset v0.0.0-20150612182917-8dac2c3c4870 // indirect
-	github.com/fogleman/gg v1.1.0 // indirect
 	github.com/fogleman/primitive v0.0.0-20170926175833-69506c928bef
 	github.com/garyburd/redigo v1.6.0
 	github.com/go-bindata/go-bindata v1.0.0
-	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
 	github.com/google/go-github v17.0.0+incompatible
-	github.com/google/go-querystring v1.0.0 // indirect
 	github.com/google/gops v0.3.5
 	github.com/google/uuid v1.1.0 // indirect
 	github.com/hullerob/go.farbfeld v0.0.0-20181222022525-3661193c725f
 	github.com/jaytaylor/html2text v0.0.0-20180606194806-57d518f124b0
 	github.com/joeshaw/envdecode v0.0.0-20180312135643-c9e015854467
 	github.com/joho/godotenv v1.3.0
-	github.com/kardianos/osext v0.0.0-20170510131534-ae77be60afb1 // indirect
-	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
+	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0 // indirect
 	github.com/klauspost/cpuid v1.2.0 // indirect
 	github.com/klauspost/reedsolomon v1.8.0 // indirect
 	github.com/kr/pretty v0.1.0
 	github.com/mattn/go-runewidth v0.0.4 // indirect
+	github.com/miekg/dns v1.1.6
 	github.com/mmikulicic/stringlist v0.0.0-20170411212101-a0d1ef9a7ccb
 	github.com/mndrix/golog v0.0.0-20170330170653-a28e2a269775
 	github.com/mndrix/ps v0.0.0-20170330174427-18e65badd6ab // indirect
@@ -39,7 +33,6 @@ require (
 	github.com/peterh/liner v1.1.0
 	github.com/pkg/errors v0.8.1
 	github.com/robertkrimen/godocdown v0.0.0-20130622164427-0bfa04905481
-	github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf // indirect
 	github.com/streamrail/concurrent-map v0.0.0-20160823150647-8bf1e9bacbf6
 	github.com/stretchr/testify v1.3.0 // indirect
 	github.com/templexxx/cpufeat v0.0.0-20180724012125-cef66df7f161 // indirect
diff --git a/go.sum b/go.sum
index 37699d1..f808a2b 100644
--- a/go.sum
+++ b/go.sum
@@ -1,13 +1,35 @@
 bou.ke/monkey v1.0.1/go.mod h1:FgHuK96Rv2Nlf+0u1OOVDpCMdsWyOFmeeketDHE7LIg=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+contrib.go.opencensus.io/exporter/stackdriver v0.5.0/go.mod h1:QeFzMJDAw8TXt5+aRaSuE8l5BwaMIOIlaVkBOPRuMuw=
+dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU=
+dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
+git.xeserv.us/xena/xekrazy v0.0.0-20190323225600-a1897cd1ff90 h1:HYlBF/HwuxVlHd+U/e3TjBk4pqEVvfJ1oA9xrH3Q0R8=
+git.xeserv.us/xena/xekrazy v0.0.0-20190323225600-a1897cd1ff90/go.mod h1:a/2dRcwKz0OU5LelwG7qJZI84iKDWZjEA0U+PjZjrOY=
+github.com/McKael/madon v2.3.0+incompatible/go.mod h1:+issnvJjN1rpjAHZwXRB/x30uHh/NoQR7QaojJK/lSI=
 github.com/McKael/madon/v2 v2.0.0-20180929094633-c679abc985d6 h1:9cJcTOeILzInNo+DCYmXKME1QfAP07FYdo3M9/9jyc4=
 github.com/McKael/madon/v2 v2.0.0-20180929094633-c679abc985d6/go.mod h1:mvlJhxZCchfiasx3XvN3hBu5RekGwTDm09dKlSM/dQQ=
+github.com/ThomasRooney/gexpect v0.0.0-20161231170123-5482f0350944/go.mod h1:sPML5WwI6oxLRLPuuqbtoOKhtmpVDCYtwsps+I+vjIY=
+github.com/Xe/johaus v0.3.0/go.mod h1:AxheHD7a8X/KIoOUFa2krQkHFIKqhoP+VTWqNJ+3Joo=
+github.com/Xe/ln v0.1.2/go.mod h1:GWZDvjL0ZC/9SSjY8DJ2IOrID6Lejs7D8pgQyjqMYSk=
+github.com/Xe/x v0.0.0-20181215174608-ddbe51f7fcb3/go.mod h1:HRT48voeWT3hUxA3++o8yKAwTJ8woU03BUC6G0xrSig=
 github.com/aclements/go-moremath v0.0.0-20180329182055-b1aff36309c7 h1:/NWziSfuX4cu00adiPldD8sdCpKxu6BZtLoALSyElZQ=
 github.com/aclements/go-moremath v0.0.0-20180329182055-b1aff36309c7/go.mod h1:idZL3yvz4kzx1dsBOAC+oYv6L92P1oFEhUXUB1A/lwQ=
+github.com/ailncode/gluaxmlpath v0.0.0-20161126153117-6ce478ecb4a6/go.mod h1:Ti1AvV2KUYtHEBX7eYbdAGEfFyKz9+lHrJPcr79Vkng=
+github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
+github.com/beevik/ntp v0.2.0/go.mod h1:hIHWr+l3+/clUnF44zdK+CWW7fO8dR5cIylAQ76NRpg=
+github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
+github.com/brandur/simplebox v0.0.0-20150921201729-84e9865bb03a/go.mod h1:8hDWkKEpFQwZcugC69PxsoNQMh+0/A3FzLCppp/yJZM=
+github.com/bwmarrin/discordgo v0.18.0/go.mod h1:5NIvFv5Z7HddYuXbuQegZ684DleQaCFqChP2iuBivJ8=
 github.com/bwmarrin/discordgo v0.19.0 h1:kMED/DB0NR1QhRcalb85w0Cu3Ep2OrGAqZH1R5awQiY=
 github.com/bwmarrin/discordgo v0.19.0/go.mod h1:O9S4p+ofTFwB02em7jkpkV8M3R0/PUVOwN61zSZ0r4Q=
+github.com/caarlos0/env v3.4.0+incompatible/go.mod h1:tdCsowwCzMLdkqRYDlHpZCp2UooDD3MspDBjZ2AD02Y=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/cjoudrey/gluahttp v0.0.0-20180401075744-7065ce73b887/go.mod h1:X97UjDTXp+7bayQSFZk2hPvCTmTZIicUjZQRtkwgAKY=
+github.com/cjoudrey/gluaurl v0.0.0-20161028222611-31cbb9bef199/go.mod h1:jC+zrjHA5CaxJzn+tojIoIOzSp/6BlkRWXnMlxNkB+g=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd h1:qMd81Ts1T2OTKmB4acZcyKaMtRnY5Y44NuXGX2GFJ1w=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI=
+github.com/coreos/go-systemd v0.0.0-20180705093442-88bfeed483d3/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -17,76 +39,125 @@ github.com/dgryski/go-onlinestats v0.0.0-20170612111826-1c7d19468768 h1:Xzl7CSuS
 github.com/dgryski/go-onlinestats v0.0.0-20170612111826-1c7d19468768/go.mod h1:alfmlCqcg4uw9jaoIU1nOp9RFdJLMuu8P07BCEgpgoo=
 github.com/disintegration/imaging v1.5.0 h1:uYqUhwNmLU4K1FN44vhqS4TZJRAA4RhBINgbQlKyGi0=
 github.com/disintegration/imaging v1.5.0/go.mod h1:9B/deIUIrliYkyMTuXJd6OUFLcrZ2tf+3Qlwnaf/CjU=
+github.com/dustin/go-humanize v0.0.0-20180713052910-9f541cc9db5d/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
+github.com/eaburns/johaus v0.0.0-20180211190535-0482c3c1f4ff/go.mod h1:haq7Ati+IITjB94ZcX9Pur49JW6bQRs/yTcYaqDPxsc=
 github.com/eaburns/peggy v0.0.0-20180405011029-d685ddd3cbcb h1:VNtdhXiCNFtQkeRwcS8XW2+gyxollG4Kc4wnHbzGpP8=
 github.com/eaburns/peggy v0.0.0-20180405011029-d685ddd3cbcb/go.mod h1:5tfPwI6ukiK3W5vJzkj5MBQKHHY9Gcy2y6k1FC/23Xk=
 github.com/eaburns/pretty v0.0.0-20170305202417-362524b72369 h1:C/RhDONMNTxvyaQNWbxj2RAyHOGVYoq+kP5j9hdnYOk=
 github.com/eaburns/pretty v0.0.0-20170305202417-362524b72369/go.mod h1:iW/TU1T4mA4w2KzqNbBCjacPFdJ9PfGvNSxr8ajT/iM=
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diff --git a/tools/dnsd/dnsd.conf b/tools/dnsd/dnsd.conf
new file mode 100644
index 0000000..e490d13
--- /dev/null
+++ b/tools/dnsd/dnsd.conf
@@ -0,0 +1,7 @@
+port 5900
+forward-server 1.1.1.1:53
+
+zone-url (
+         https://xena.greedo.xeserv.us/files/akua.zone
+         https://xena.greedo.xeserv.us/files/adblock.zone
+)
\ No newline at end of file
diff --git a/tools/dnsd/main.go b/tools/dnsd/main.go
new file mode 100644
index 0000000..314c86d
--- /dev/null
+++ b/tools/dnsd/main.go
@@ -0,0 +1,128 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"log"
+	"net/http"
+
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/Xe/x/internal"
+	"github.com/miekg/dns"
+	"github.com/mmikulicic/stringlist"
+)
+
+var (
+	port   = flag.String("port", "53", "UDP port to listen on for DNS")
+	server = flag.String("forward-server", "1.1.1.1:53", "forward DNS server")
+
+	zoneURLs = stringlist.Flag("zone-url", "DNS zonefiles to load")
+)
+
+var (
+	defaultZoneURLS = []string{
+		"https://xena.greedo.xeserv.us/files/akua.zone",
+		"https://xena.greedo.xeserv.us/files/adblock.zone",
+	}
+)
+
+func main() {
+	internal.HandleStartup()
+
+	if len(*zoneURLs) == 0 {
+		*zoneURLs = defaultZoneURLS
+	}
+
+	for _, zurl := range *zoneURLs {
+		log.Printf("conf: -zone-url=%s", zurl)
+	}
+	log.Printf("conf: -port=%s", *port)
+	log.Printf("conf: -forward-server=%s", *server)
+
+	rrs := []dns.RR{}
+
+	for _, zurl := range *zoneURLs {
+		resp, err := http.Get(zurl)
+		if err != nil {
+			panic(err)
+		}
+
+		reader := bufio.NewReaderSize(resp.Body, 2048)
+
+		var i int
+		zp := dns.NewZoneParser(reader, "", zurl)
+		for rr, ok := zp.Next(); ok; rr, ok = zp.Next() {
+			rrs = append(rrs, rr)
+			i++
+		}
+
+		if zp.Err() != nil {
+			panic(zp.Err())
+		}
+
+		resp.Body.Close()
+
+		log.Printf("%s: %d records", zurl, i)
+	}
+
+	dns.HandleFunc(".", func(w dns.ResponseWriter, r *dns.Msg) {
+		m := new(dns.Msg)
+		m.SetReply(r)
+		m.Authoritative = true
+
+		for _, q := range r.Question {
+			answers := []dns.RR{}
+			for _, rr := range rrs {
+				rh := rr.Header()
+
+				if rh.Rrtype == dns.TypeCNAME && q.Name == rh.Name {
+					answers = append(answers, rr)
+
+					for _, a := range resolver("127.0.0.1:"+*port, rr.(*dns.CNAME).Target, q.Qtype) {
+						answers = append(answers, a)
+					}
+				}
+
+				if q.Name == rh.Name && q.Qtype == rh.Rrtype && q.Qclass == rh.Class {
+					answers = append(answers, rr)
+				}
+			}
+			if len(answers) == 0 && *server != "" {
+				for _, a := range resolver(*server, q.Name, q.Qtype) {
+					answers = append(answers, a)
+				}
+			}
+			for _, a := range answers {
+				m.Answer = append(m.Answer, a)
+			}
+		}
+		w.WriteMsg(m)
+	})
+
+	go func() {
+		srv := &dns.Server{Addr: ":" + *port, Net: "udp"}
+		if err := srv.ListenAndServe(); err != nil {
+			log.Fatalf("Failed to set udp listener %s\n", err.Error())
+		}
+	}()
+
+	sig := make(chan os.Signal)
+	signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM)
+	s := <-sig
+	log.Fatalf("Signal (%v) received, stopping\n", s)
+}
+
+func resolver(server, fqdn string, r_type uint16) []dns.RR {
+	m1 := new(dns.Msg)
+	m1.Id = dns.Id()
+	m1.SetQuestion(fqdn, r_type)
+
+	in, err := dns.Exchange(m1, server)
+	if err == nil {
+		return in.Answer
+	}
+	return []dns.RR{}
+}