diff --git a/auth/middleware.go b/auth/middleware.go
index cb78aad716d17c38286bc41fe9a98f3a6b11ad19..6a91df21feafb44c23156a9c7691026ccb4930b7 100644
--- a/auth/middleware.go
+++ b/auth/middleware.go
@@ -101,49 +101,7 @@ }
 
 func authForUsername(ctx context.Context, username string) (*AuthContext, error) {
 	var auth AuthContext
-	if err := database.WithTx(ctx, &sql.TxOptions{
-		Isolation: 0,
-		ReadOnly:  true,
-	}, func(tx *sql.Tx) error {
-		var (
-			err  error
-			rows *sql.Rows
-		)
-		query := database.
-			Select(ctx, []string{
-				`u.id`, `u.username`,
-				`u.created`, `u.updated`,
-				`u.email`,
-				`u.user_type`,
-				`u.url`, `u.location`, `u.bio`,
-				`u.suspension_notice`,
-			}).
-			From(`"user" u`).
-			Where(`u.username = ?`, username)
-		if rows, err = query.RunWith(tx).Query(); err != nil {
-			panic(err)
-		}
-		defer rows.Close()
-
-		if !rows.Next() {
-			if err := rows.Err(); err != nil {
-				panic(err)
-			}
-			return fmt.Errorf("Authenticating for unknown user %s", username)
-		}
-		if err := rows.Scan(&auth.UserID, &auth.Username, &auth.Created,
-			&auth.Updated, &auth.Email, &auth.UserType, &auth.URL, &auth.Location,
-			&auth.Bio, &auth.SuspensionNotice); err != nil {
-			panic(err)
-		}
-		if rows.Next() {
-			if err := rows.Err(); err != nil {
-				panic(err) // Invariant
-			}
-			panic(errors.New("Multiple matching user accounts; invariant broken"))
-		}
-		return nil
-	}); err != nil {
+	if err := LookupUser(ctx, username, &auth); err != nil {
 		return nil, err
 	}
 
diff --git a/auth/middleware_test.go b/auth/middleware_test.go
index 59fbe0c1d993398a184385f4b5b9cd8fe5e6ac4d..1efe99e409094ab652fec39502ae4ae27c7be68a 100644
--- a/auth/middleware_test.go
+++ b/auth/middleware_test.go
@@ -12,6 +12,7 @@ 	"github.com/DATA-DOG/go-sqlmock"
 	"github.com/stretchr/testify/assert"
 	"github.com/vaughan0/go-ini"
 
+	"git.sr.ht/~sircmpwn/core-go/config"
 	"git.sr.ht/~sircmpwn/core-go/crypto"
 	"git.sr.ht/~sircmpwn/core-go/database"
 )
@@ -185,7 +186,10 @@ 	db, mock, err := sqlmock.New()
 	if err != nil {
 		panic(err)
 	}
-	ctx := database.Context(context.Background(), db)
+	ctx := config.Context(
+		database.Context(context.Background(), db),
+		nil, "git.sr.ht",
+	)
 	return ctx, mock
 }