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#!rsc
# RouterOS script: daily-psk
# Copyright (c) 2013-2018 Christian Hesse <mail@eworm.de>
#
# update daily PSK (pre shared key)

:global "daily-psk-match-comment";

:global "GeneratePSK";

# check mail server
:if ([ / tool netwatch get [ find where comment=[ / tool e-mail get address ] ] status ] != "up" ) do={
  :error "Mail server is not up.";
}

# check time
:if ([ / system ntp client get status ] != "synchronized") do={
  :error "Time is not yet synchronized from ntp.";
}

:local date [ / system clock get date ];
:local newpsk [ $GeneratePSK $date ];

:local sendmail 0;

:foreach acclist in=[ / interface wireless access-list find where comment~$"daily-psk-match-comment" ] do={
  :local interface [ / interface wireless access-list get $acclist interface ];
  :local ssid [ / interface wireless get $interface ssid ];
  :local oldpsk [ / interface wireless access-list get $acclist private-pre-shared-key ];

  :if ($newpsk != $oldpsk) do={
    :log info ("Updating daily PSK for " . $interface . " to " . $newpsk . " (was " . $oldpsk . ")");
    / interface wireless access-list set $acclist private-pre-shared-key=$newpsk;

    :set sendmail 1;
  }
}

:if ($sendmail = 1) do={
  / system script run email-daily-psk;
}

/ system scheduler set disabled=yes [ find where name=daily-psk disabled=no ];