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add support for multiple subdomains

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This commit is contained in:
Evgenii Vilkov 2020-01-30 13:38:37 +00:00
parent a3553daa2f
commit 6cba88c6d0
2 changed files with 19 additions and 15 deletions
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2
README.md
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@ -14,7 +14,7 @@ Pick one of the options below using the following settings:
* **DIGITALOCEAN_TOKEN:** The token you generate in DigitalOcean's API settings.
* **DOMAIN:** The domain your subdomain is registered at. (i.e. `foo.com` for `home.foo.com`)
* **NAME:** Subdomain to use. (name in A record) (i.e. `home` for `home.foo.com`)
* **NAME:** Subdomain to use. (name in A record) (i.e. `home` for `home.foo.com`). Multiple subdomains must be separated by semicolons `;`
* **SLEEP_INTERVAL:** Polling time in seconds. (default: 300)
### Docker (Recommended)

32
dyndns.sh
View file

@ -19,25 +19,29 @@ while ( true ); do
-H "Content-Type: application/json" \
-H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
$dns_list)
record_id=$(echo $domain_records| jq ".domain_records[] | select(.type == \"A\" and .name == \"$NAME\") | .id")
record_data=$(echo $domain_records| jq -r ".domain_records[] | select(.type == \"A\" and .name == \"$NAME\") | .data")
test -z $record_id && die "No record found with given domain name!"
ip="$(curl -s ipinfo.io/ip)"
data="{\"type\": \"A\", \"name\": \"$NAME\", \"data\": \"$ip\"}"
url="$dns_list/$record_id"
if [[ -n $ip ]]; then
if [[ "$ip" != "$record_data" ]]; then
echo "existing DNS record address ($record_data) doesn't match current IP ($ip), sending data=$data to url=$url"
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")
test -z $record_id && echo "No record found with '$sub' domain name!" && continue
curl -s -X PUT \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
-d "$data" \
"$url" &> /dev/null
fi
if [[ "$ip" != "$record_data" ]]; then
data="{\"type\": \"A\", \"name\": \"$sub\", \"data\": \"$ip\"}"
url="$dns_list/$record_id"
echo "existing DNS record address ($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
fi
done
else
echo "IP wasn't retrieved within allowed interval. Will try $sleep_interval seconds later.."
fi