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#!/bin/rc -ex
# This script reconfigures and reloads smtpd to use the provided info.
mdir = /etc/mail
ddir = $mdir/dkim
conf = $mdir/smtpd.conf
duser = _dkimsign
rsapriv = $1
edpriv = $2
domain = $3
selector = `$nl{basename $rsapriv | sed 's/\..*//'}
telltale = '#added by reconfig-smtpd'
fn err {
echo $* >[1=2]
}
if (test $#* -gt 3 || test $#* -lt 2) {
err 'usage: reconfig-smtpd <rsakey> <ed25519key> [domain]'
exit 2
}
if (~ $domain ()) {
domain = `hostname
}
doas sed -ibkp '/' ^ $telltale ^ '/d' $conf
{
printf 'filter dkimsign_rsa proc-exec "filter-dkimsign -d %s -s %s -k %s" user %s group %s %s\n' \
$domain $selector $rsapriv $duser $duser $telltale
printf 'filter dkimsign_ed25519 proc-exec "filter-dkimsign -a ed25519-sha256 -d %s -s %s -k %s" user %s group %s %s\n' \
$domain ed$selector $edpriv $duser $duser $telltale
cat $conf
} | doas tee $conf >/dev/null
doas rcctl restart smtpd
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