Forked the emersion/go-imap v1 project.

cmd/imapmemserver/main.go

@@ -0,0 +1,81 @@
+package main
+
+import (
+	"crypto/tls"
+	"flag"
+	"io"
+	"log"
+	"net"
+	"os"
+
+	"github.com/emersion/go-imap/v2"
+	"github.com/emersion/go-imap/v2/imapserver"
+	"github.com/emersion/go-imap/v2/imapserver/imapmemserver"
+)
+
+var (
+	listen       string
+	tlsCert      string
+	tlsKey       string
+	username     string
+	password     string
+	debug        bool
+	insecureAuth bool
+)
+
+func main() {
+	flag.StringVar(&listen, "listen", "localhost:143", "listening address")
+	flag.StringVar(&tlsCert, "tls-cert", "", "TLS certificate")
+	flag.StringVar(&tlsKey, "tls-key", "", "TLS key")
+	flag.StringVar(&username, "username", "user", "Username")
+	flag.StringVar(&password, "password", "user", "Password")
+	flag.BoolVar(&debug, "debug", false, "Print all commands and responses")
+	flag.BoolVar(&insecureAuth, "insecure-auth", false, "Allow authentication without TLS")
+	flag.Parse()
+
+	var tlsConfig *tls.Config
+	if tlsCert != "" || tlsKey != "" {
+		cert, err := tls.LoadX509KeyPair(tlsCert, tlsKey)
+		if err != nil {
+			log.Fatalf("Failed to load TLS key pair: %v", err)
+		}
+		tlsConfig = &tls.Config{
+			Certificates: []tls.Certificate{cert},
+		}
+	}
+
+	ln, err := net.Listen("tcp", listen)
+	if err != nil {
+		log.Fatalf("Failed to listen: %v", err)
+	}
+	log.Printf("IMAP server listening on %v", ln.Addr())
+
+	memServer := imapmemserver.New()
+
+	if username != "" || password != "" {
+		user := imapmemserver.NewUser(username, password)
+		user.Create("INBOX", nil)
+		memServer.AddUser(user)
+	}
+
+	var debugWriter io.Writer
+	if debug {
+		debugWriter = os.Stdout
+	}
+
+	server := imapserver.New(&imapserver.Options{
+		NewSession: func(conn *imapserver.Conn) (imapserver.Session, *imapserver.GreetingData, error) {
+			return memServer.NewSession(), nil, nil
+		},
+		Caps: imap.CapSet{
+			imap.CapIMAP4rev1: {},
+			imap.CapIMAP4rev2: {},
+		},
+		TLSConfig:    tlsConfig,
+		InsecureAuth: insecureAuth,
+		DebugWriter:  debugWriter,
+	})
+	if err := server.Serve(ln); err != nil {
+		log.Fatalf("Serve() = %v", err)
+	}
+}