routeros-scripts/global-functions

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#!rsc
# RouterOS script: global-functions
# Copyright (c) 2013-2018 Christian Hesse <mail@eworm.de>
#
# global functions
# return pseudo-random string for PSK
:global GeneratePSK do={
:local date $1;
:global "daily-psk-secrets";
:local months {
"jan"; "feb"; "mar"; "apr"; "may"; "jun";
"jul"; "aug"; "sep"; "oct"; "nov"; "dec"
}
:local monthtbl {
0; 3; 3; 6; 1; 4; 6; 2; 5; 0; 3; 5
}
:local monthstr [ :pick $date 0 3 ];
:local month;
:local day [ :pick $date 4 6 ];
:local century [ :pick $date 7 9 ];
:local year [ :pick $date 9 11 ];
# get numeric value for month
:for mindex from=0 to=[ :len $months ] do={
:if ([ :pick $months $mindex ] = $monthstr) do={
:set month $mindex;
}
}
# calculate day of week
:local sum 0;
:set sum ($sum + (2 * (3 - ($century - (($century / 4) * 4)))));
:set sum ($sum + ($year / 4));
:set sum ($sum + $year + $day);
:set sum ($sum + $month);
:set sum ($sum - (($sum / 7) * 7));
:local return ([ :pick [ :pick $"daily-psk-secrets" 0 ] ($day - 1) ] . \
[ :pick [ :pick $"daily-psk-secrets" 1 ] $month ] . \
[ :pick [ :pick $"daily-psk-secrets" 2 ] $sum ]);
:return $return;
}
# send notification via e-mail and telegram
# Note that subject and attachment are ignored for telegram!
:global SendNotification do={
:local subject $1;
:local message $2;
:local attach $3;
:global "email-general-to";
:global "email-general-cc";
:global "telegram-tokenid";
:global "telegram-chatid";
:if ([ :len $"email-general-to" ] > 0) do={
:do {
/ tool e-mail send to=$"email-general-to" cc=$"email-general-cc" \
subject=$subject body=$message file=$attach;
} on-error={
:log warning "Failed sending notification mail!";
}
}
# You need to import the certificate chain for api.telegram.org!
# https://certs.godaddy.com/repository/gdroot-g2.crt
# https://certs.godaddy.com/repository/gdig2.crt.pem
:if ([ :len $"telegram-tokenid" ] > 0 && [ :len $"telegram-chatid" ] > 0) do={
do {
/ tool fetch check-certificate=yes-without-crl keep-result=no http-method=post \
("https://api.telegram.org/bot" . $"telegram-tokenid" . "/sendMessage") \
http-data=("chat_id=" . $"telegram-chatid" . "&text=" . $message);
} on-error={
:log warning "Failed sending telegram notification!";
}
}
}