routeros-scripts/certificate-renew-issued

#!rsc
# RouterOS script: certificate-renew-issued
# Copyright (c) 2019-2020 Christian Hesse <mail@eworm.de>
#
# renew locally issued certificates

:global CertIssuedExportPass;

:global MkDir;

:foreach Cert in=[ / certificate find where issued expires-after<3w ] do={
  :local CertVal [ / certificate get $Cert ];
  / certificate issued-revoke $Cert;
  / certificate set name=($CertVal->"name" . "-revoked-" . [ / system clock get date ]) $Cert;
  / certificate add name=($CertVal->"name") common-name=($CertVal->"common-name") \
      key-usage=($CertVal->"key-usage") subject-alt-name=($CertVal->"subject-alt-name");
  / certificate sign ($CertVal->"name") ca=($CertVal->"ca");
  :if ([ :typeof ($CertIssuedExportPass->($CertVal->"common-name")) ] = "str") do={
    $MkDir "cert-issued";
    / certificate export-certificate ($CertVal->"name") type=pkcs12 \
        file-name=("cert-issued/" . $CertVal->"common-name") \
        export-passphrase=($CertIssuedExportPass->($CertVal->"common-name"));
  }
}