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#!rsc by RouterOS
# RouterOS script: certificate-renew-issued
# Copyright (c) 2019-2022 Christian Hesse <mail@eworm.de>
# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
#
# renew locally issued certificates
# https://git.eworm.de/cgit/routeros-scripts/about/doc/certificate-renew-issued.md

:local 0 "certificate-renew-issued";
:global GlobalFunctionsReady;
:while ($GlobalFunctionsReady != true) do={ :delay 500ms; }

:global CertIssuedExportPass;

:global LogPrintExit2;
: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={
    :if ([ $MkDir "cert-issued" ] = true) do={
      /certificate/export-certificate ($CertVal->"name") type=pkcs12 \
          file-name=("cert-issued/" . $CertVal->"common-name") \
          export-passphrase=($CertIssuedExportPass->($CertVal->"common-name"));
      $LogPrintExit2 info $0 ("Issued a new certificate for \"" . $CertVal->"common-name" . \
        "\", exported to \"cert-issued/" . $CertVal->"common-name" . ".p12\".") false;
    } else={
      $LogPrintExit2 warning $0 ("Failed creating directory, not exporting certificate.") false;
    }
  } else={
    $LogPrintExit2 info $0 ("Issued a new certificate for \"" . $CertVal->"common-name" . "\".") false;
  }
}