Domaincheck -- alert on DNS domain info changing.

domaincheck-cronhourly.sh

#!/bin/sh

(
cd /usr/local/domaincheck || exit 1

mkdir -p state logs || exit 1

./domaincheck domains.txt state > logs/$(date +%Y%m%d-%H%M%S).log 2>&1

find logs/ -type f -name '*.log' -mtime +30 -delete

) 2>&1 | mail -E -s "Domaincheck Error" admins

domaincheck.sh

#!/bin/sh
#
#  Alert on DNS domain info changing.
#
#  Requirements:
#    - commands: host, mail, hg
#    - "admins" mailbox or alias
#
#  Written by ilya.evseev@gmail.com at Aug-2014.
#

#set -x   # ..uncomment for debug!

test $# = 2 || { echo "Usage: $0 domain-list.txt /path/to/statedir/"; exit; }

 domlist="$1"   # ..textfile, one line = one domain
statedir="$2"

DNS_SERVERS="8.8.4.4  77.88.8.8  4.2.2.5"   # ..google, yandex, level3

for ns in $DNS_SERVERS; do host -t any "ya.ru" && { ns_good="yes"; break; }; done
test -n "$ns_good" || { echo "nslookup ya.ru failed" | mail -s "Domaincheck Error" admins; exit 1; }

while read dom; do
        dom=${dom%%#*}   # ..strip comments
        test -z "$dom" && continue
        for ns in $DNS_SERVERS; do
                host        "$dom" "$ns"
                host -t any "$dom" "$ns"
                host -t ns  "$dom" "$ns"
                host -t mx  "$dom" "$ns"
                sleep 1
        done 2>&1 | grep "^$dom " | sort | uniq > "$statedir/$dom.state" || exit 1
done < "$domlist"

cd "$statedir/" || exit 1
test -d ".hg" || hg init || exit 1   # ..Requires Mercirial!

hg status | grep -q '' || exit 0   # ..nothing changed
( hg status ; hg diff ) | mail -s "Domaincheck report" admins
hg addremove
hg commit -m "Autocommit $(date '+%Y.%m.%d_%H:%M:%S')"

sitecheck.sh

#!/bin/sh

test $# = 1 || { echo "Usage: $0 sitelist.txt"; exit; }

sitelist="$1"   # ..textfile, one line = one sitename

wget -SO/dev/null "http://ya.ru/" 2>&1 | grep -qi '200 OK' ||
	{ echo "ya.ru unavailable" | mail -s "Sitecheck blocked" admins; exit 1; }

while read site; do
	site=${site%%#*}   # ..strip comments
	test -z "$site" && continue
	state="$(wget -SO/dev/null "$site" 2>&1)"
	echo $state | grep -qi '200 OK' && continue
	echo $state | mail -s "Sitecheck failed: $site" admins
done < "$sitelist"

exit 0

whoischeck.sh

#!/bin/sh

test $# = 1 || { echo "Usage: $0 domain-list.txt"; exit; }

domlist="$1"   # ..textfile, one line = one domain

while read dom; do
        dom=${dom%%#*}   # ..strip comments
        test -z "$dom" && continue

        d="$(whois $dom | awk '/[Ee]xpir.*[Dd]ate:/ || /[Tt]ill:/ {print $NF; exit;}')"
        if test -z "$d"; then
                echo "Empty expiration time for $dom" | mail -s "Whoischeck error" admins
                continue
        fi

        ds="$(date --date="$d" +%Y.%m.%d 2>/dev/null)"
        test -n "$ds" || ds="$d"   # ..workaround hack, unrecognized date may be already in "yyyy.mm.dd" format!

        if test -n "${ds##????.??.??}"; then    # ..check for "yyyy.mm.dd" format
                echo "Wrong expiration time for $dom: $d" | mail -s "Whoischeck error" admins
                continue
        fi

        #printf "%20s: %s\n" "$dom" "$ds"

        for x in `seq 0 29`; do
                soon=`date --date="+$x days" +%Y.%m.%d`
                test "$ds" = "$soon" || continue
                echo $dom: $ds | mail -s "Time to pay for domain" admins
                break;
        done
done < "$domlist"

exit 0