50 lines
1.5 KiB
Bash
50 lines
1.5 KiB
Bash
#!/bin/bash
|
|
# Takes two positional arguments:
|
|
# $1 is the name of the zone to update
|
|
# E.g. jafner.net
|
|
# $2 is an auth token for Cloudflare;
|
|
# Must have the following permissions
|
|
# for the given zone:
|
|
# - Zone: Read
|
|
# - DNS: Read
|
|
# - DNS: Edit
|
|
function cfddns () {
|
|
ZONE=$1
|
|
TOKEN=$2
|
|
|
|
# 1. Get the zone ID from the zone name
|
|
ZONE_ID=$(
|
|
curl -s \
|
|
-X GET "https://api.cloudflare.com/client/v4/zones" \
|
|
--header "Authorization: Bearer $TOKEN" \
|
|
--header "Content-Type:application/json" |\
|
|
jq -r --arg NAME "$ZONE" '.[] | .[]? | select(.name?==$NAME) | .id' 2>/dev/null |\
|
|
xargs
|
|
); echo $ZONE_ID
|
|
|
|
# 2. Get the record ID of the root A record
|
|
RECORD_ID=$(
|
|
curl -s \
|
|
-X GET "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records" \
|
|
--header "Authorization: Bearer $TOKEN" \
|
|
--header 'Content-Type:application/json' |\
|
|
jq -r --arg NAME "$ZONE" '.[] | .[]? | select(.type=="A") | select(.name?==$NAME) | .id' 2>/dev/null |\
|
|
xargs
|
|
); echo $RECORD_ID
|
|
|
|
# 3. Compose the json payload for the record to push
|
|
DATA=$(jq --null-input \
|
|
--arg CONTENT "$(curl -s ipinfo.io/ip)" \
|
|
--arg NAME "$ZONE" \
|
|
'{"content": $CONTENT, "name": $NAME, "type": "A"}'
|
|
); echo $DATA
|
|
|
|
# 4. Finally submit the updated record to Cloudflare
|
|
curl --request PUT \
|
|
--url https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$RECORD_ID \
|
|
--header "Authorization: Bearer $TOKEN" \
|
|
--header 'Content-Type:application/json' \
|
|
--data "$DATA" > /dev/null 2>&1
|
|
}
|
|
|
|
cfddns $1 $2 |