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#!/usr/bin/env bash
set -e
# Not needed but useful to know
function aws_ip_check {
aws route53 list-resource-record-sets --hosted-zone-id $HOSTED_ZONE_ID \
--query "ResourceRecordSets[?(Name == 'senders.io.' && Type == 'A')].ResourceRecords[0].Value | [0]" --output text
}
if [ $# -lt 1 ]; then
echo "Usage: ./update.sh HOSTED_ZONE_ID DOMAIN
./update.sh CONFIG_FILE
"
exit 1
fi
if [ $# -eq 1 ]; then
source $1
fi
if [ $# -eq 2 ]; then
HOSTED_ZONE_ID=$1
DOMAIN=$2
fi
RECORD_CHANGE_JSON=/tmp/aws-ip-update.json
# Fetch IPs
config_ip=$(dig +short $DOMAIN)
actual_ip=$(curl -s https://ipinfo.io/ip)
if [ "$config_ip" != "$actual_ip" ]; then
echo "Updating IP from $config_id to $actual_ip for $DOMAIN"
cat <<EOF > $RECORD_CHANGE_JSON
{
"Changes": [
{
"Action": "UPSERT",
"ResourceRecordSet": {
"Name": "$DOMAIN",
"Type": "A",
"TTL": 300,
"ResourceRecords": [
"Value": "$actual_ip"
]
}
}
]
}
EOF
aws route53 change-resource-record-sets \
--hosted-zone-id $HOSTED_ZONE_ID \
--change-batch "file://$RECORD_CHANGE_JSON"
else
echo "$DOMAIN is currently registered properly: $config_ip $actual_ip"
fi
exit 0
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