/
cloudflare-multi-ddns.sh
49 lines (41 loc) · 1.35 KB
/
cloudflare-multi-ddns.sh
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#!/bin/bash
# Global Variables
ip_record_loc="/tmp/ip-record" # Location of ip records file
dns_entries_loc="/srv/cloudflare-ddns/dns-entries" # Location of dns entries file
# Get the current IP address
current_ip=$(curl --silent https://api.ipify.org) || exit 1
# Check if IP Record file exists
if [ ! -f "$ip_record_loc" ]; then
> $ip_record_loc
fi
# Check if dns-entries exists and empty
[ ! -f "$dns_entries_loc" ] && > $dns_entries_loc
[ ! -s "$dns_entries_loc" ] && exit 0
# Get the last recorded IP address
recorded_ip=`cat $ip_record_loc`
# Compare the last recorded IP and the current IP. If no change, then exit.
if [ "$recorded_ip" = "$current_ip" ]; then
exit 0
fi
# Write current IP to IP Record file
echo $current_ip > $ip_record_loc
echo "IP changed to $current_ip"
# Update all entries on Cloudflare
IFS=' '
while read auth_email cf_api_key zone_id a_record_name a_record_id ttl proxied
do
record=$(cat << EOF
{ "type": "A",
"name": "$a_record_name",
"content": "$current_ip",
"ttl": $ttl,
"proxied": $proxied }
EOF
)
curl --silent "https://api.cloudflare.com/client/v4/zones/$zone_id/dns_records/$a_record_id" \
-X PUT \
-H "Content-Type: application/json" \
-H "X-Auth-Email: $auth_email" \
-H "X-Auth-Key: $cf_api_key" \
-d "$record"
done < $dns_entries_loc