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-#!rsc by RouterOS
-# RouterOS script: daily-psk%TEMPL%
-# Copyright (c) 2013-2022 Christian Hesse <mail@eworm.de>
-# Michael Gisbers <michael@gisbers.de>
-# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
-#
-# update daily PSK (pre shared key)
-# https://git.eworm.de/cgit/routeros-scripts/about/doc/daily-psk.md
-#
-# !! This is just a template! Replace '%PATH%' with 'caps-man'
-# !! or 'interface wireless'!
-
-:local 0 "daily-psk%TEMPL%";
-:global GlobalFunctionsReady;
-:while ($GlobalFunctionsReady != true) do={ :delay 500ms; }
-
-:global DailyPskMatchComment;
-:global Identity;
-
-:global LogPrintExit2;
-:global SendNotification2;
-:global SymbolForNotification;
-:global UrlEncode;
-:global WaitForFile;
-:global WaitFullyConnected;
-
-$WaitFullyConnected;
-
-# return pseudo-random string for PSK
-:local GeneratePSK do={
- :local Date [ :tostr $1 ];
-
- :global DailyPskSecrets;
-
- :local Months { "jan"; "feb"; "mar"; "apr"; "may"; "jun";
- "jul"; "aug"; "sep"; "oct"; "nov"; "dec" };
-
- :local Month [ :pick $Date 0 3 ];
- :local Day [ :tonum [ :pick $Date 4 6 ] ];
- :local Year [ :pick $Date 7 11 ];
-
- :for MIndex from=0 to=[ :len $Months ] do={
- :if ($Months->$MIndex = $Month) do={
- :set Month ($MIndex + 1);
- }
- }
-
- :local A ((14 - $Month) / 12);
- :local B ($Year - $A);
- :local C ($Month + 12 * $A - 2);
- :local WeekDay (7000 + $Day + $B + ($B / 4) - ($B / 100) + ($B / 400) + ((31 * $C) / 12));
- :set WeekDay ($WeekDay - (($WeekDay / 7) * 7));
-
- :return (($DailyPskSecrets->0->($Day - 1)) . \
- ($DailyPskSecrets->1->($Month - 1)) . \
- ($DailyPskSecrets->2->$WeekDay));
-}
-
-:local Seen ({});
-:local Date [ /system/clock/get date ];
-:local NewPsk [ $GeneratePSK $Date ];
-
-:foreach AccList in=[ /%PATH%/access-list/find where comment~$DailyPskMatchComment ] do={
- :local IntName [ /interface/wireless/access-list/get $AccList interface ];
- :local Ssid [ /interface/wireless/get $IntName ssid ];
- :local Ssid [ /caps-man/access-list/get $AccList ssid-regexp ];
- :local Configuration [ /caps-man/configuration/get ([ find where ssid=$Ssid ]->0) name ];
- :local OldPsk [ /interface/wireless/access-list/get $AccList private-pre-shared-key ];
- :local OldPsk [ /caps-man/access-list/get $AccList private-passphrase ];
- :local Skip 0;
-
- :if ($NewPsk != $OldPsk) do={
- $LogPrintExit2 info $0 ("Updating daily PSK for " . $Ssid . " to " . $NewPsk . " (was " . $OldPsk . ")") false;
- /interface/wireless/access-list/set $AccList private-pre-shared-key=$NewPsk;
- /caps-man/access-list/set $AccList private-passphrase=$NewPsk;
-
- :if ([ :len [ /interface/wireless/find where name=$IntName !disabled ] ] = 1) do={
- :if ([ :len [ /caps-man/interface/find where configuration=$Configuration ] ] > 0) do={
- :foreach SeenSsid in=$Seen do={
- :if ($SeenSsid = $Ssid) do={
- $LogPrintExit2 debug $0 ("Already sent a mail for SSID " . $Ssid . ", skipping.") false;
- :set Skip 1;
- }
- }
-
- :if ($Skip = 0) do={
- :set Seen ($Seen, $Ssid);
- :local Link ("https://www.eworm.de/cgi-bin/cqrlogo-wifi.cgi" . \
- "?scale=8&level=1&ssid=" . [ $UrlEncode $Ssid ] . "&pass=" . [ $UrlEncode $NewPsk ]);
- $SendNotification2 ({ origin=$0; \
- subject=([ $SymbolForNotification "calendar" ] . "daily PSK " . $Ssid); \
- message=("This is the daily PSK on " . $Identity . ":\n\n" . \
- "SSID: " . $Ssid . "\n" . \
- "PSK: " . $NewPsk . "\n" . \
- "Date: " . $Date . "\n\n" . \
- "A client device specific rule must not exist!"); link=$Link });
- }
- }
- }
-}