Make IMAP and SMTP sessions check for passwords

internal/imap/server.go

@@ -2,6 +2,7 @@ package imap
 
 import (
 	"context"
+	"fmt"
 	"io"
 	"log"
 	"sync/atomic"
@@ -70,14 +71,21 @@ func (c *concrete) Run() {
 
 // backend implementation for go-imap
 func (c *concrete) Login(user, pass string) (imapbackend.User, error) {
-	// FIXME: TODO: Check for account existence and correct password(!)
+	account, err := c.store.FindAccountWithPassword(user, pass)
+	if err != nil {
+		// Lo the real error, but don't show it to the end user
+		log.Printf("Opening %s session for %s failed: %s", c.name, user, err)
+		return nil, fmt.Errorf("Login failed")
+	}
+
 	session := &Session{
 		ID:          atomic.AddUint64(&c.sid, uint64(1)),
-		AccountName: user,
+		Account:     account,
 		ServiceName: c.name,
 	}
 
 	log.Printf("Beginning %s session %d for %s", c.name, session.ID, user)
+	// FIXME: TODO: Track ongoing sessions for termination or notifications
 
 	return session, nil
 }