5 files changed, 358 insertions, 0 deletions
diff --git a/tests/dnstap/meson.build b/tests/dnstap/meson.build
new file mode 100644
index 0000000..1dfd87e
--- /dev/null
+++ b/tests/dnstap/meson.build
@@ -0,0 +1,11 @@
+
+# note: it will be skipped if 'go' is missing (and marked so)
+test('dnstap',
+  find_program('./src/dnstap-test/run.sh'),
+  args: [ sbin_dir / 'kresd' ],
+  suite: [ 'postinstall', 'dnstap' ],
+  timeout: 120, # it may need to fetch go packages, etc.
+  # it takes relatively long time
+  kwargs: meson.version().version_compare('<0.52') ? {} : { 'priority': 5 },
+)
+
diff --git a/tests/dnstap/src/dnstap-test/config b/tests/dnstap/src/dnstap-test/config
new file mode 100644
index 0000000..5f15308
--- /dev/null
+++ b/tests/dnstap/src/dnstap-test/config
@@ -0,0 +1,14 @@
+-- SPDX-License-Identifier: GPL-3.0-or-later
+modules = {
+	'hints',
+	dnstap = {
+		socket_path = "dnstap.sock",
+		client = {
+			log_queries = true,
+			log_responses = true,
+		}
+	}
+}
+hints['fake1.localdomain'] = '1.2.3.4'
+hints['fake2.localdomain'] = '1.2.3.5'
+hints['fake3.localdomain'] = '1.2.3.6'
diff --git a/tests/dnstap/src/dnstap-test/main.go b/tests/dnstap/src/dnstap-test/main.go
new file mode 100644
index 0000000..c04b4c1
--- /dev/null
+++ b/tests/dnstap/src/dnstap-test/main.go
@@ -0,0 +1,247 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"github.com/cloudflare/dns"
+	dnstap "github.com/dnstap/golang-dnstap"
+	"github.com/golang/protobuf/proto"
+	"io"
+	"io/ioutil"
+	"log"
+	"net"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+)
+
+var (
+	kresdArgs = []string{
+		"-n",
+		"-q",
+	}
+)
+
+func qnameFromFrame(b []byte) (string, error) {
+	dt := &dnstap.Dnstap{}
+	var name string
+	if err := proto.Unmarshal(b, dt); err != nil {
+		return name, err
+	}
+
+	var msg_raw []byte
+	m := dt.Message
+	if *m.Type == dnstap.Message_CLIENT_QUERY {
+		msg_raw = m.QueryMessage
+	} else if *m.Type == dnstap.Message_CLIENT_RESPONSE {
+		msg_raw = m.ResponseMessage
+	} else {
+		return name, fmt.Errorf("incorrect message type: %v", *m.Type)
+	}
+
+	if msg_raw == nil {
+		return name, fmt.Errorf("no message payload")
+	}
+	if err := dns.IsMsg(msg_raw); err != nil {
+		return name, err
+	}
+	var msg dns.Msg
+	if err := msg.Unpack(msg_raw); err != nil {
+		return name, err
+	}
+	if len(msg.Question) < 1 {
+		return name, fmt.Errorf("question empty")
+	}
+	return msg.Question[0].Name, nil
+}
+
+func listenOn() (net.Addr, *os.File, error) {
+	udpConn, err := net.ListenUDP("udp", &net.UDPAddr{
+		IP:   net.ParseIP("127.0.0.1"),
+		Port: 0,
+	})
+	if err != nil {
+		return nil, nil, err
+	}
+
+	file, err := udpConn.File()
+	if err != nil {
+		return nil, nil, err
+	}
+	return udpConn.LocalAddr(), file, nil
+}
+
+func runKresd(ctx context.Context, path, configFile string, grace time.Duration) (chan bool, error) {
+	ch := make(chan bool)
+	kresdArgs = append(kresdArgs, "-c"+configFile)
+	// we have 1 object in ExtraFiles with index 0
+	// child fd will be 3 + i = 3
+	kresdArgs = append(kresdArgs, "-S3")
+
+	file := ctx.Value("file").(*os.File)
+	debug := ctx.Value("debug").(bool)
+
+	cmd := exec.CommandContext(ctx, path, kresdArgs...)
+	cmd.ExtraFiles = []*os.File{file}
+
+	var stdout, stderr io.ReadCloser
+	var err error
+	if debug {
+		stdout, err = cmd.StdoutPipe()
+		if err != nil {
+			log.Printf("stdoutpipe: %v\n", err)
+			return ch, err
+		}
+
+		stderr, err = cmd.StderrPipe()
+		if err != nil {
+			log.Printf("stderrpipe: %v\n", err)
+			return ch, err
+		}
+	}
+
+	go func() {
+		status := false
+		defer func() {
+			ch <- status // kresd done
+		}()
+		if err := cmd.Start(); err != nil {
+			log.Printf("start: %v\n", err)
+			return
+		}
+		time.Sleep(grace)
+		ch <- true // Started kresd
+
+		if debug {
+			s, err := ioutil.ReadAll(stdout)
+			if err != nil {
+				log.Printf("readall: %v\n", err)
+				return
+			}
+			if len(s) > 0 {
+				fmt.Printf("stdout:\n%s\n", s)
+			}
+
+			s, err = ioutil.ReadAll(stderr)
+			if err != nil {
+				log.Printf("readall: %v\n", err)
+				return
+			}
+			if len(s) > 0 {
+				fmt.Printf("stderr:\n%s\n", s)
+			}
+		}
+
+		if err := cmd.Wait(); err != nil && err.Error() != "signal: killed" {
+			log.Printf("wait: %v\n", err)
+			return
+		}
+		status = true
+	}()
+	return ch, nil
+}
+
+func main() {
+	var (
+		unixSocket = flag.String("u", "dnstap.sock", "dnstap socket")
+		kresdPath  = flag.String("cmd", "kresd", "kresd path")
+		configFile = flag.String("c", "config", "config file")
+		qnames     = flag.String("q", ".", "list of comma separated zones")
+		grace      = flag.String("g", "1s", "Time to wait for daemon start")
+		timeout    = flag.String("t", "60s", "Test Timeout")
+		debug      = flag.Bool("d", false, "Debug")
+	)
+
+	flag.Parse()
+
+	kresdStartGracePeriod, err := time.ParseDuration(*grace)
+	if err != nil {
+		panic(err)
+	}
+
+	testTimeout, err := time.ParseDuration(*timeout)
+	if err != nil {
+		panic(err)
+	}
+
+	input, err := dnstap.NewFrameStreamSockInputFromPath(*unixSocket)
+	if err != nil {
+		panic(err)
+	}
+
+	output := make(chan []byte)
+	go input.ReadInto(output)
+
+	ctx, cancel := context.WithTimeout(context.Background(), testTimeout)
+
+	// Create a UDP listening socket on random port
+	// FD will be passed on to kresd
+	addr, file, err := listenOn()
+	if err != nil {
+		panic(err)
+	}
+	if *debug {
+		log.Printf("listen addr:%v", addr)
+	}
+	ctx = context.WithValue(ctx, "file", file)
+	ctx = context.WithValue(ctx, "debug", *debug)
+
+	ch, err := runKresd(ctx, *kresdPath, *configFile, kresdStartGracePeriod)
+	if err != nil {
+		panic(err)
+	}
+
+	log.Printf("Waiting for kresd to start\n")
+	status := <-ch
+	if !status {
+		os.Exit(1) // error starting
+	}
+
+	go func() {
+		parts := strings.Split(*qnames, ",")
+
+		if len(parts) == 0 {
+			log.Printf("qname count is 0")
+		}
+		for _, name := range parts {
+			m := new(dns.Msg)
+			fqdn := dns.Fqdn(name)
+			m.SetQuestion(fqdn, dns.TypeA)
+			c := new(dns.Client)
+			resp, _, err := c.Exchange(m, fmt.Sprintf("%v", addr))
+			if err != nil {
+				log.Printf("%v\n", err)
+				os.Exit(1) // Test Failed
+			}
+			if *debug {
+				log.Printf("Response: %v", resp)
+			}
+
+			for range "QR" { // Checking Query and Response is the same ATM
+				o := <-output
+				if *debug {
+					log.Printf("raw dnstap:%v", o)
+				}
+				dtName, err := qnameFromFrame(o)
+				if err != nil {
+					log.Printf("%v\n", err)
+					os.Exit(1)
+				}
+				if fqdn != dtName {
+					log.Printf("expected %v got %v", fqdn, dtName)
+					os.Exit(1) // Test failed
+				}
+				log.Printf("matched qname: %v", dtName)
+			}
+		}
+		cancel() // Send signal to close daemon
+	}()
+
+	status = <-ch
+	if !status {
+		os.Exit(1) // error in wait
+	}
+	log.Printf("Tested OK\n")
+}
diff --git a/tests/dnstap/src/dnstap-test/run.sh b/tests/dnstap/src/dnstap-test/run.sh
new file mode 100755
index 0000000..2f32ea1
--- /dev/null
+++ b/tests/dnstap/src/dnstap-test/run.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+set -e
+KRESD_CMD=$1
+MESON_BUILD_ROOT=$(pwd)
+mkdir -p tests/dnstap
+export GOPATH=$MESON_BUILD_ROOT/tests/dnstap
+cd "$(dirname $0)"
+DNSTAP_TEST=dnstap-test
+
+if [ -z "$GITLAB_CI" ]; then
+	type -P go >/dev/null || exit 77
+	echo "Building the dnstap test and its dependencies..."
+	# some packages may be missing on the system right now
+	go get github.com/{FiloSottile/gvt,cloudflare/dns,dnstap/golang-dnstap,golang/protobuf/proto}
+else
+	# In CI we've prebuilt dependencies into the default GOPATH.
+	# We're in a scratch container, so we just add the dnstap test inside.
+	export GOPATH=/root/go
+fi
+DTAP=$GOPATH/src/$DNSTAP_TEST
+rm -f $DTAP && ln -s $(realpath ..)/$DNSTAP_TEST $DTAP
+go install $DNSTAP_TEST
+
+
+CONFIG=$(realpath ./config)
+ZONES="fake1.localdomain,fake2.localdomain,fake3.localdomain"
+TIMEOUT=60s
+GRACE=5s
+cd $MESON_BUILD_ROOT/tests/dnstap # don't leave stuff like *.mdb in ./.
+$GOPATH/bin/$DNSTAP_TEST -c $CONFIG -cmd $KRESD_CMD -q $ZONES -t $TIMEOUT -g $GRACE -d
+
diff --git a/tests/dnstap/src/dnstap-test/vendor/manifest b/tests/dnstap/src/dnstap-test/vendor/manifest
new file mode 100644
index 0000000..27c1dec
--- /dev/null
+++ b/tests/dnstap/src/dnstap-test/vendor/manifest
@@ -0,0 +1,55 @@
+{
+	"version": 0,
+	"dependencies": [
+		{
+			"importpath": "github.com/cloudflare/dns",
+			"repository": "https://github.com/cloudflare/dns",
+			"vcs": "git",
+			"revision": "e20ffa3da443071c7b3d164dec5b1f80dfb2ecf3",
+			"branch": "master",
+			"notests": true
+		},
+		{
+			"importpath": "github.com/dnstap/golang-dnstap",
+			"repository": "https://github.com/dnstap/golang-dnstap",
+			"vcs": "git",
+			"revision": "0145fd8482619f9c04788c7ba4e96cdeef64a041",
+			"branch": "master",
+			"notests": true
+		},
+		{
+			"importpath": "github.com/farsightsec/golang-framestream",
+			"repository": "https://github.com/farsightsec/golang-framestream",
+			"vcs": "git",
+			"revision": "b600ccf606747139c84b6d69b5c3988164db4d42",
+			"branch": "master",
+			"notests": true
+		},
+		{
+			"importpath": "github.com/golang/protobuf/proto",
+			"repository": "https://github.com/golang/protobuf",
+			"vcs": "git",
+			"revision": "8ee79997227bf9b34611aee7946ae64735e6fd93",
+			"branch": "master",
+			"path": "/proto",
+			"notests": true
+		},
+		{
+			"importpath": "github.com/golang/protobuf/ptypes/any",
+			"repository": "https://github.com/golang/protobuf",
+			"vcs": "git",
+			"revision": "8ee79997227bf9b34611aee7946ae64735e6fd93",
+			"branch": "master",
+			"path": "ptypes/any",
+			"notests": true
+		},
+		{
+			"importpath": "github.com/miekg/dns",
+			"repository": "https://github.com/miekg/dns",
+			"vcs": "git",
+			"revision": "f4d2b086946a624202dc59e6a43f72e8f3f02bc1",
+			"branch": "master",
+			"notests": true
+		}
+	]
+}
+\ No newline at end of file