mirror of
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92 lines
2.8 KiB
Plaintext
92 lines
2.8 KiB
Plaintext
#!rsc
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# RouterOS script: daily-psk
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# Copyright (c) 2013-2019 Christian Hesse <mail@eworm.de>
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#
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# update daily PSK (pre shared key)
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:global Identity;
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:global DailyPskMatchComment;
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:global SendNotification;
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:local Seen [ :toarray "" ];
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# return pseudo-random string for PSK
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:local GeneratePSK do={
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:local Date [ :tostr $1 ];
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:global DailyPskSecrets;
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:local Months { "jan"; "feb"; "mar"; "apr"; "may"; "jun";
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"jul"; "aug"; "sep"; "oct"; "nov"; "dec" };
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:local Month [ :pick $Date 0 3 ];
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:local Day [ :tonum [ :pick $Date 4 6 ] ];
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:local Year [ :pick $Date 7 11 ];
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:for MIndex from=0 to=[ :len $Months ] do={
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:if ($Months->$MIndex = $Month) do={
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:set Month ($MIndex + 1);
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}
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}
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:local A ((14 - $Month) / 12);
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:local B ($Year - $A);
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:local C ($Month + 12 * $A - 2);
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:local WeekDay (7000 + $Day + $B + ($B / 4) - ($B / 100) + ($B / 400) + ((31 * $C) / 12));
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:set WeekDay ($WeekDay - (($WeekDay / 7) * 7));
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:return (($DailyPskSecrets->0->($Day - 1)) . \
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($DailyPskSecrets->1->($Month - 1)) . \
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($DailyPskSecrets->2->$WeekDay));
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}
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:local Date [ / system clock get date ];
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:local NewPsk [ $GeneratePSK $Date ];
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:foreach AccList in=[ / interface wireless access-list find where comment~$DailyPskMatchComment ] do={
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:local IntName [ / interface wireless access-list get $AccList interface ];
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:local Interface [ / interface wireless find where name=$IntName disabled=no ];
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:local Ssid [ / interface wireless get $IntName ssid ];
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:local OldPsk [ / interface wireless access-list get $AccList private-pre-shared-key ];
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:local Skip 0;
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:if ($NewPsk != $OldPsk) do={
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:log info ("Updating daily PSK for " . $IntName . " to " . $NewPsk . " (was " . $OldPsk . ")");
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/ interface wireless access-list set $AccList private-pre-shared-key=$NewPsk;
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:if ([ :len $Interface ] = 1) do={
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:foreach SeenSsid in=$Seen do={
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:if ($SeenSsid = $Ssid) do={
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:log debug ("Already sent a mail for SSID " . $Ssid . ", skipping.");
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:set Skip 1;
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}
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}
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:if ($Skip = 0) do={
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:set Seen ($Seen, $Ssid);
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:local Url ("https://www.eworm.de/cgi-bin/cqrlogo-wifi.cgi" . \
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"?scale=8&level=1&ssid=" . $Ssid . "&pass=" . $NewPsk);
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:local Attach "qrcode-daily.png";
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:do {
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/ tool fetch mode=https check-certificate=yes-without-crl \
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$Url dst-path=$Attach;
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} on-error={
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:set Attach "";
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}
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$SendNotification ("daily PSK " . $Ssid) \
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("This is the daily PSK on " . $Identity . ":\n\n" . \
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"SSID: " . $Ssid . "\n" . \
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"PSK: " . $NewPsk . "\n" . \
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"Date: " . $Date . "\n\n" . \
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$Url) $Attach;
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}
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} else={
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:log debug ("Missing active interface " . $IntName . " for access list entry.");
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}
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}
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}
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