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normalize localparts with unicode nfc when parsing

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both when parsing our configs, and for incoming on smtp or in messages.
so we properly compare things like é and e+accent as equal, and accept the
different encodings of that same address.
This commit is contained in:
Mechiel Lukkien
2024-03-08 21:08:40 +01:00
parent 4fbd7abb57
commit 8e6fe7459b
23 changed files with 134 additions and 59 deletions
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6
subjectpass/subjectpass.go
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@ -116,7 +116,11 @@ func Verify(elog *slog.Logger, r io.ReaderAt, key []byte, period time.Duration)
if err != nil {
return fmt.Errorf("%w: from address with bad domain: %v", ErrFrom, err)
}
addr := smtp.Address{Localpart: smtp.Localpart(from.User), Domain: d}.Pack(true)
lp, err := smtp.ParseLocalpart(from.User)
if err != nil {
return fmt.Errorf("%w: from address with bad localpart: %v", ErrFrom, err)
}
addr := smtp.Address{Localpart: lp, Domain: d}.Pack(true)
buf, err := base64.RawURLEncoding.DecodeString(token)
if err != nil {