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do not require the SMTPUTF8 extension when not needed (#145)

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Squashed commit of the following:

commit 11c25d727f
Author: Laurent Meunier <laurent@deltalima.net>
Date:   Sun Mar 31 12:37:09 2024 +0200

    Fix style issue

commit c075a8cd8b
Author: Laurent Meunier <laurent@deltalima.net>
Date:   Sun Mar 31 12:35:04 2024 +0200

    Also check smtputf8 for submitted messages or when in pedantic mode

commit c02328f881
Author: Laurent Meunier <laurent@deltalima.net>
Date:   Sun Mar 31 12:33:20 2024 +0200

    Calls to `newParser` should use `c.smtputf8`

commit a0bbd13afc
Author: Laurent Meunier <laurent@deltalima.net>
Date:   Sun Mar 31 12:32:12 2024 +0200

    Improve SMTPUTF8 tests

commit 08735690f3
Author: Laurent Meunier <laurent@deltalima.net>
Date:   Sat Mar 30 17:22:33 2024 +0100

    do earlier smtputf8-check

commit 3484651691
Author: Laurent Meunier <laurent@deltalima.net>
Date:   Thu Mar 28 17:47:11 2024 +0100

    do not require the SMTPUTF8 extension when not needed

    fix #145
This commit is contained in:
Laurent Meunier
2024-03-31 15:23:53 +02:00
committed by Mechiel Lukkien
parent d34dd8aae6
commit 9c5d234162
5 changed files with 174 additions and 33 deletions
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15
message/from.go
View File

@ -18,17 +18,22 @@ import (
// From headers may be present. From returns an error if there is not exactly
// one address. This address can be used for evaluating a DMARC policy against
// SPF and DKIM results.
func From(elog *slog.Logger, strict bool, r io.ReaderAt) (raddr smtp.Address, envelope *Envelope, header textproto.MIMEHeader, rerr error) {
func From(elog *slog.Logger, strict bool, r io.ReaderAt, p *Part) (raddr smtp.Address, envelope *Envelope, header textproto.MIMEHeader, rerr error) {
log := mlog.New("message", elog)
// ../rfc/7489:1243
// todo: only allow utf8 if enabled in session/message?
p, err := Parse(log.Logger, strict, r)
if err != nil {
// todo: should we continue with p, perhaps headers can be parsed?
return raddr, nil, nil, fmt.Errorf("parsing message: %v", err)
var err error
if p == nil {
var pp Part
pp, err = Parse(log.Logger, strict, r)
if err != nil {
// todo: should we continue with p, perhaps headers can be parsed?
return raddr, nil, nil, fmt.Errorf("parsing message: %v", err)
}
p = &pp
}
header, err = p.Header()
if err != nil {