mirror of
https://github.com/tunix/digitalocean-dyndns
synced 2024-05-18 05:33:38 +00:00
9b59388a58
In some cases the return body from ifconfig.co is an HTML error page. This change makes sure the response is a valid IP address.
81 lines
2.5 KiB
Bash
Executable file
81 lines
2.5 KiB
Bash
Executable file
#!/bin/bash
|
|
|
|
api_host="https://api.digitalocean.com/v2"
|
|
sleep_interval=${SLEEP_INTERVAL:-300}
|
|
|
|
services=(
|
|
"ifconfig.co"
|
|
"ipinfo.io/ip"
|
|
"ifconfig.me"
|
|
)
|
|
|
|
die() {
|
|
echo "$1"
|
|
exit 1
|
|
}
|
|
|
|
test -z $DIGITALOCEAN_TOKEN && die "DIGITALOCEAN_TOKEN not set!"
|
|
test -z $DOMAIN && die "DOMAIN not set!"
|
|
test -z $NAME && die "NAME not set!"
|
|
|
|
dns_list="$api_host/domains/$DOMAIN/records"
|
|
|
|
while ( true ); do
|
|
domain_records=$(curl -s -X GET \
|
|
-H "Content-Type: application/json" \
|
|
-H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
|
|
$dns_list"?per_page=200")
|
|
|
|
for service in ${services[@]}; do
|
|
echo "Trying with $service..."
|
|
|
|
ip="$(curl -s $service)"
|
|
valid_ip=$(echo $ip | grep '[0-9]\{1,3\}\(\.[0-9]\{1,3\}\)\{3\}')
|
|
test -n "$valid_ip" && break
|
|
done
|
|
|
|
echo "Found IP address $ip"
|
|
|
|
if [[ -n $ip ]]; then
|
|
# disable glob expansion
|
|
set -f
|
|
|
|
for sub in ${NAME//;/ }; do
|
|
record_id=$(echo $domain_records| jq ".domain_records[] | select(.type == \"A\" and .name == \"$sub\") | .id")
|
|
record_data=$(echo $domain_records| jq -r ".domain_records[] | select(.type == \"A\" and .name == \"$sub\") | .data")
|
|
|
|
# re-enable glob expansion
|
|
set +f
|
|
|
|
data="{\"type\": \"A\", \"name\": \"$sub\", \"data\": \"$ip\"}"
|
|
url="$dns_list/$record_id"
|
|
|
|
if [[ -z $record_id ]]; then
|
|
echo "No record found with '$sub' domain name. Creating record, sending data=$data to url=$url"
|
|
new_record=$(curl -s -X POST \
|
|
-H "Content-Type: application/json" \
|
|
-H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
|
|
-d "$data" \
|
|
"$url")
|
|
record_data=$(echo $new_record| jq -r ".data")
|
|
fi
|
|
|
|
if [[ "$ip" != "$record_data" ]]; then
|
|
echo "existing DNS record address ($record_data) doesn't match current IP ($ip), sending data=$data to url=$url"
|
|
|
|
curl -s -X PUT \
|
|
-H "Content-Type: application/json" \
|
|
-H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
|
|
-d "$data" \
|
|
"$url" &> /dev/null
|
|
else
|
|
echo "existing DNS record address ($record_data) did not need updating"
|
|
fi
|
|
done
|
|
else
|
|
echo "IP wasn't retrieved within allowed interval. Will try $sleep_interval seconds later.."
|
|
fi
|
|
|
|
sleep $sleep_interval
|
|
done
|