domain_cron.sh

#!/bin/bash

DAILY_CHECK_AT="06:00"

DOMAIN_NAME=$1
ALERT_RECIPIENT=$2

function sendEmail() {
        echo "$2" | mail -s "$1" "$ALERT_RECIPIENT"
}

DATA_FILE="/home/admin/domain_cron/${DOMAIN_NAME}"
CHECKSUM_FILE="${DATA_FILE}.sha256"

if [ ! -f "$CHECKSUM_FILE" ]; then
        touch "$CHECKSUM_FILE"
fi

if [ ! -f "$DATA_FILE" ]; then
        touch "$DATA_FILE"
fi

CURRENT_CHECKSUM=$(cat "$CHECKSUM_FILE")

WHOIS_DATA=$(whois "$DOMAIN_NAME" | sed '/^%%.*/d')
WHOIS_DIFF=$(echo "$WHOIS_DATA" | diff "$DATA_FILE" -)
NEW_CHECKSUM=$(echo "$WHOIS_DATA" | sha256sum)

if [ "$CURRENT_CHECKSUM" != "$NEW_CHECKSUM" ]; then
        sendEmail "domain_cron: changement détecté sur $DOMAIN_NAME" $'Un changement sur le WHOIS de '"$DOMAIN_NAME"$' a été détecté.\n\nDernier WHOIS récupéré:\n\n'"$(cat $DATA_FILE)"$'\n'
fi

echo "$NEW_CHECKSUM" > "$CHECKSUM_FILE"
echo "$WHOIS_DATA" > "$DATA_FILE"

CURRENT_TIME=$(date '+%H:%m')
if [ "$CURRENT_TIME" = "$DAILY_CHECK_AT" ]; then
        sendEmail "domain_cron: test cyclique" "Il est $(date +%H:%m), on est le $(LANG=fr date '+%d %B %Y'), tout va bien !"
fi