170 lines
3.2 KiB
Bash
Executable file
170 lines
3.2 KiB
Bash
Executable file
#!/usr/bin/env sh
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API_TOKEN="${API_TOKEN:-ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890abcd}"
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ZONE="${ZONE:-example.com}"
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DOMAIN="${DOMAIN:-example.com}"
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EVENT() {
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printf "\x1b[95m>>> \x1b[0m\x1b[98m$1\n"
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}
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LOG() {
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printf "\x1b[98m$1\n"
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}
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ERROR() {
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>&2 printf "\x1b[91mError: \x1b[0m\x1b[98m$1\n"
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}
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CURL() {
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RESPONSE=$(curl --silent --request $1 \
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--url "https://api.cloudflare.com/client/v4$2" \
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--header "Content-Type: application/json" \
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--header "Authorization: Bearer $API_TOKEN" \
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--data "$3")
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SUCCESS=$(echo $RESPONSE | jq -r ".success")
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if [ "$SUCCESS" != "true" ]; then
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ERROR "$(echo $RESPONSE | jq -r ".errors[0].message")"
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kill $$
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fi
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echo $RESPONSE | jq ".result"
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}
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PATCH() {
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CURL "PATCH" "$1" "$2"
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}
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POST() {
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CURL "POST" "$1" "$2"
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}
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GET() {
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CURL "GET" "$1" ""
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}
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EVENT "Getting zones"
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ZONES=$(GET "/zones")
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ZONE_ID="null"
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i=0
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while true; do
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ZONE_JSON=$(echo $ZONES | jq ".[$i]")
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if [ "$ZONE_JSON" == "null" ]; then
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break
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fi
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NAME=$(echo $ZONE_JSON | jq -r ".name")
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ID=$(echo $ZONE_JSON | jq -r ".id")
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LOG "Found zone $NAME ($ID)"
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if [ "$NAME" == "$ZONE" ]; then
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ZONE_ID=$ID
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break
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fi
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((i=i+1))
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done
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if [ "$ZONE_ID" == "null" ]; then
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ERROR "Could not find zone $DOMAIN"
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exit 1
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fi
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EVENT "Getting records"
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RECORDS=$(GET "/zones/$ZONE_ID/dns_records")
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IPv4Current="null"
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IPv6Current="null"
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IPv4Id="null"
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IPv6Id="null"
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i=0
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while true; do
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RECORD=$(echo $RECORDS | jq ".[$i]")
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if [ "$RECORD" == "null" ]; then
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break
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fi
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NAME=$(echo $RECORD | jq -r '.name')
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TYPE=$(echo $RECORD | jq -r '.type')
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CONTENT=$(echo $RECORD | jq -r '.content')
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ID=$(echo $RECORD | jq -r '.id')
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LOG "Found record $NAME $TYPE \"$CONTENT\" ($ID)"
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if [ "$NAME" == "$DOMAIN" ] && [ "$TYPE" == "A" ]; then
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IPv4Current="$CONTENT"
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IPv4Id="$ID"
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fi
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if [ "$NAME" == "$DOMAIN" ] && [ "$TYPE" == "AAAA" ]; then
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IPv6Current="$CONTENT"
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IPv6Id="$ID"
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fi
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((i=i+1))
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done
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EVENT "Getting current IPs"
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IPv4New=$(curl ip.me -4sL --silent)
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LOG "Using IPv4 $IPv4New"
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IPv6New=$(curl ip.me -6sL --silent)
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LOG "Using IPv6 $IPv6New"
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UPDATE() {
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PATCH "/zones/$ZONE_ID/dns_records/$1" "$2" > /dev/null
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}
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CREATE() {
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POST "/zones/$ZONE_ID/dns_records" "$1" > /dev/null
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}
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IPv4JSON="{
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\"content\": \"$IPv4New\",
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\"name\": \"$DOMAIN\",
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\"proxied\": false,
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\"type\": \"A\"
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}"
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IPv6JSON="{
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\"content\": \"$IPv6New\",
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\"name\": \"$DOMAIN\",
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\"proxied\": false,
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\"type\": \"AAAA\"
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}"
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EVENT "Updating records"
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if [ "$IPv4Id" == "null" ]; then
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LOG "No IPv4 record found... creating new one"
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CREATE "$IPv4JSON"
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elif [ "$IPv4Current" != "$IPv4New" ]; then
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LOG "IPv4 record found... updating"
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UPDATE "$IPv4Id" "$IPv4JSON"
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else
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LOG "IPv4 is up to date... skipping"
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fi
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if [ "$IPv6Id" == "null" ]; then
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LOG "No IPv6 record found... creating new one"
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CREATE "$IPv6JSON"
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elif [ "$IPv6Current" != "$IPv6New" ]; then
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LOG "IPv6 record found... updating"
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UPDATE "$IPv6Id" "$IPv6JSON"
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else
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LOG "IPv6 is up to date... skipping"
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fi
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EVENT "Successfully updated records"
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