From 5013f322b444e653b5c403d3985407569aacc613 Mon Sep 17 00:00:00 2001
From: Hayden Hamilton <hayden@hhvn.uk>
Date: Sun, 24 May 2026 22:26:46 +0100
Subject: Create dkim/reconfig-smtpd

---
 dkim/reconfig-smtpd | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100755 dkim/reconfig-smtpd

(limited to 'dkim/reconfig-smtpd')

diff --git a/dkim/reconfig-smtpd b/dkim/reconfig-smtpd
new file mode 100755
index 0000000..a7edd82
--- /dev/null
+++ b/dkim/reconfig-smtpd
@@ -0,0 +1,39 @@
+#!/bin/rc -e
+
+# 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 (~ $#* 2 || ~ $#* 3) { } else {
+	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 $selector $edpriv $duser $duser $telltale
+	cat $conf
+} | doas tee $conf >/dev/null
+
+doas rcctl restart smtpd
-- 
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