mirror of
https://github.com/mjl-/mox.git
synced 2024-12-26 16:33:47 +03:00
5b20cba50a
we don't want external software to include internal details like mlog. slog.Logger is/will be the standard. we still have mlog for its helper functions, and its handler that logs in concise logfmt used by mox. packages that are not meant for reuse still pass around mlog.Log for convenience. we use golang.org/x/exp/slog because we also support the previous Go toolchain version. with the next Go release, we'll switch to the builtin slog.
52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
package smtpserver
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/mjl-/mox/dsn"
|
|
"github.com/mjl-/mox/queue"
|
|
"github.com/mjl-/mox/smtp"
|
|
"github.com/mjl-/mox/store"
|
|
)
|
|
|
|
// compose dsn message and add it to the queue for delivery to rcptTo.
|
|
func queueDSN(ctx context.Context, c *conn, rcptTo smtp.Path, m dsn.Message, requireTLS bool) error {
|
|
buf, err := m.Compose(c.log, false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
var bufUTF8 []byte
|
|
if c.smtputf8 {
|
|
bufUTF8, err = m.Compose(c.log, true)
|
|
if err != nil {
|
|
c.log.Errorx("composing dsn with utf-8 for incoming delivery for unknown user, continuing with ascii-only dsn", err)
|
|
}
|
|
}
|
|
|
|
f, err := store.CreateMessageTemp(c.log, "smtp-dsn")
|
|
if err != nil {
|
|
return fmt.Errorf("creating temp file: %w", err)
|
|
}
|
|
defer store.CloseRemoveTempFile(c.log, f, "smtpserver dsn message")
|
|
|
|
if _, err := f.Write([]byte(buf)); err != nil {
|
|
return fmt.Errorf("writing dsn file: %w", err)
|
|
}
|
|
|
|
// Queue DSN with null reverse path so failures to deliver will eventually drop the
|
|
// message instead of causing delivery loops.
|
|
// ../rfc/3464:433
|
|
const has8bit = false
|
|
const smtputf8 = false
|
|
var reqTLS *bool
|
|
if requireTLS {
|
|
reqTLS = &requireTLS
|
|
}
|
|
qm := queue.MakeMsg("", smtp.Path{}, rcptTo, has8bit, smtputf8, int64(len(buf)), m.MessageID, nil, reqTLS)
|
|
qm.DSNUTF8 = bufUTF8
|
|
if err := queue.Add(ctx, c.log, &qm, f); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|