send emails

smtp/msa.go

@@ -0,0 +1,59 @@
+package smtp
+
+import (
+	"context"
+	"os"
+	"time"
+
+	"github.com/emersion/go-smtp"
+	"github.com/getsentry/sentry-go"
+	"gitlab.com/etke.cc/go/logger"
+)
+
+// msa is mail submission agent
+type msa struct {
+	log    *logger.Logger
+	domain string
+	client Client
+}
+
+func (b *msa) newSession() *msasession {
+	return &msasession{
+		ctx:    sentry.SetHubOnContext(context.Background(), sentry.CurrentHub().Clone()),
+		log:    b.log,
+		domain: b.domain,
+		client: b.client,
+	}
+}
+
+func (b *msa) Login(state *smtp.ConnectionState, username, password string) (smtp.Session, error) {
+	return nil, smtp.ErrAuthUnsupported
+}
+
+func (b *msa) AnonymousLogin(state *smtp.ConnectionState) (smtp.Session, error) {
+	return b.newSession(), nil
+}
+
+func Start(domain, port, loglevel string, maxSize int, client Client) error {
+	log := logger.New("smtp.", loglevel)
+	sender := NewMTA(loglevel)
+	receiver := &msa{
+		log:    log,
+		domain: domain,
+		client: client,
+	}
+	receiver.client.SetMTA(sender)
+	s := smtp.NewServer(receiver)
+	s.Addr = ":" + port
+	s.Domain = domain
+	s.ReadTimeout = 10 * time.Second
+	s.WriteTimeout = 10 * time.Second
+	s.MaxMessageBytes = maxSize * 1024 * 1024
+	s.AllowInsecureAuth = true
+	if log.GetLevel() == "DEBUG" || log.GetLevel() == "TRACE" {
+		s.Debug = os.Stdout
+	}
+
+	log.Info("Starting SMTP server on %s:%s", domain, port)
+	return s.ListenAndServe()
+}