Rewrite everything from scratch for mqtt v5

examples/auth/basic/main.go

@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: MIT
+// SPDX-FileCopyrightText: 2022 mochi-co
+// SPDX-FileContributor: mochi-co
+package main
+
+import (
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/mochi-co/mqtt"
+	"github.com/mochi-co/mqtt/hooks/auth"
+	"github.com/mochi-co/mqtt/listeners"
+)
+
+func main() {
+	sigs := make(chan os.Signal, 1)
+	done := make(chan bool, 1)
+	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
+	go func() {
+		<-sigs
+		done <- true
+	}()
+
+	authRules := &auth.Ledger{
+		Auth: auth.AuthRules{ // Auth disallows all by default
+			{Username: "peach", Password: "password1", Allow: true},
+			{Username: "melon", Password: "password2", Allow: true},
+			{Remote: "127.0.0.1:*", Allow: true},
+			{Remote: "localhost:*", Allow: true},
+		},
+		ACL: auth.ACLRules{ // ACL allows all by default
+			{Remote: "127.0.0.1:*"}, // local superuser allow all
+			{
+				// user melon can read and write to their own topic
+				Username: "melon", Filters: auth.Filters{
+					"melon/#":   auth.ReadWrite,
+					"updates/#": auth.WriteOnly, // can write to updates, but can't read updates from others
+				},
+			},
+			{
+				// Otherwise, no clients have publishing permissions
+				Filters: auth.Filters{
+					"#":         auth.ReadOnly,
+					"updates/#": auth.Deny,
+				},
+			},
+		},
+	}
+
+	// you may also find this useful...
+	// d, _ := authRules.ToYAML()
+	// d, _ := authRules.ToJSON()
+	// fmt.Println(string(d))
+
+	server := mqtt.New(nil)
+	err := server.AddHook(new(auth.Hook), &auth.Options{
+		Ledger: authRules,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	tcp := listeners.NewTCP("t1", ":1883", nil)
+	err = server.AddListener(tcp)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	go func() {
+		err := server.Serve()
+		if err != nil {
+			log.Fatal(err)
+		}
+	}()
+
+	<-done
+	server.Log.Warn().Msg("caught signal, stopping...")
+	server.Close()
+	server.Log.Info().Msg("main.go finished")
+}