fix merge bug in systemd

mail-server/script/create_certificate

@@ -0,0 +1,16 @@
+# Create certificates if they do not exist yet
+dir="${cfg.certificateDirectory}"
+fqdn="${cfg.hostPrefix}.${cfg.domain}"
+case $fqdn in /*) fqdn=$(cat "$fqdn");; esac
+key="''${dir}/key-${cfg.domain}.pem";
+cert="''${dir}/cert-${cfg.domain}.pem";
+
+if [ ! -f "''${key}" ] || [ ! -f "''${cert}" ]
+then
+  mkdir -p "${cfg.certificateDirectory}"
+  (umask 077; "${pkgs.openssl}/bin/openssl" genrsa -out "''${key}" 2048) &&
+      "${pkgs.openssl}/bin/openssl" req -new -key "''${key}" -x509 -subj "/CN=''${fqdn}" \
+              -days 3650 -out "''${cert}"
+fi
+
+# vim: set filetype=sh