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add strict mode when parsing messages, typically enabled for incoming special-use messages like tls/dmarc reports, subjectpass emails

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and pass a logger to the message parser, so problems with message parsing get
the cid logged.
This commit is contained in:
Mechiel Lukkien
2023-08-15 08:25:56 +02:00
parent f5f953b3ab
commit 34c2dcd49d
24 changed files with 312 additions and 153 deletions
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5
message/from.go
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@ -6,6 +6,7 @@ import (
"net/textproto"
"github.com/mjl-/mox/dns"
"github.com/mjl-/mox/mlog"
"github.com/mjl-/mox/smtp"
)
@ -16,12 +17,12 @@ 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(r io.ReaderAt) (raddr smtp.Address, header textproto.MIMEHeader, rerr error) {
func From(log *mlog.Log, strict bool, r io.ReaderAt) (raddr smtp.Address, header textproto.MIMEHeader, rerr error) {
// ../rfc/7489:1243
// todo: only allow utf8 if enabled in session/message?
p, err := Parse(r)
p, err := Parse(log, strict, r)
if err != nil {
// todo: should we continue with p, perhaps headers can be parsed?
return raddr, nil, fmt.Errorf("parsing message: %v", err)