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Add ipv6 & logging support to ddns

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This commit is contained in:
Daanish Syed
2026-07-08 20:14:40 +01:00
parent 737c5c8d8a
commit 999de8e02b
1 changed files with 53 additions and 12 deletions
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modules/cloudflare-ddns/ddns.sh
+51 -10
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@@ -2,60 +2,101 @@
source /run/secrets.env
# Separate caches for IPv4 and IPv6
log() {
echo "$(date '+%Y-%m-%d %H:%M:%S') [cloudflare-ddns] $*"
}
log "Starting DDNS update"
cache_v4=/var/lib/cloudflare-ddns/old_ip_v4
cache_v6=/var/lib/cloudflare-ddns/old_ip_v6
# Fetch current IPs
IP_V4=$(@curl@/bin/curl -4 -s 'https://api.ipify.org')
IP_V6=$(@curl@/bin/curl -6 -s 'https://api6.ipify.org')
log "Detected IPv4: ${IP_V4:-none}"
log "Detected IPv6: ${IP_V6:-none}"
arr=("" "git." "www." "acs.")
if [[ -n "$IP_V4" ]]; then
old_ip_v4=$([[ -f "$cache_v4" ]] && cat "$cache_v4" || echo "")
log "Old IPv4: ${old_ip_v4:-none}"
if [[ "$IP_V4" != "$old_ip_v4" ]]; then
log "IPv4 changed, updating A records"
for sub in "${arr[@]}"; do
name="${sub}syedm.dev"
log "Checking A record for $name"
RECORD_ID=$(@curl@/bin/curl -s -X GET \
"https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records" \
-H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
-H "Content-Type: application/json" \
| @jq@/bin/jq -r ".result[] | select(.name==\"${sub}syedm.dev\" and .type==\"A\") | .id")
-H "Content-Type: application/json" | @jq@/bin/jq \
-r ".result[] | select(.name==\"${name}\" and .type==\"A\") | .id")
if [ -n "$RECORD_ID" ]; then
log "Updating $name -> $IP_V4"
@curl@/bin/curl -s -X PUT \
"https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$RECORD_ID" \
-H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
-H "Content-Type: application/json" \
-d "{\"type\":\"A\",\"name\":\"${sub}syedm.dev\",\"content\":\"$IP_V4\",\"ttl\":3600,\"proxied\":false}"
-d "{\"type\":\"A\",\"name\":\"$name\",\"content\":\"$IP_V4\",\"ttl\":3600,\"proxied\":false}"
log "Updated $name"
else
log "No A record found for $name"
fi
done
echo "$IP_V4" > "$cache_v4"
else
log "IPv4 unchanged"
fi
fi
if [[ -n "$IP_V6" ]]; then
old_ip_v6=$([[ -f "$cache_v6" ]] && cat "$cache_v6" || echo "")
log "Old IPv6: ${old_ip_v6:-none}"
if [[ "$IP_V6" != "$old_ip_v6" ]]; then
log "IPv6 changed, updating AAAA records"
for sub in "${arr[@]}"; do
name="${sub}syedm.dev"
log "Checking AAAA record for $name"
RECORD_ID=$(@curl@/bin/curl -s -X GET \
"https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records" \
-H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
-H "Content-Type: application/json" \
| @jq@/bin/jq -r ".result[] | select(.name==\"${sub}syedm.dev\" and .type==\"AAAA\") | .id")
-H "Content-Type: application/json" | @jq@/bin/jq \
-r ".result[] | select(.name==\"${name}\" and .type==\"AAAA\") | .id")
if [ -n "$RECORD_ID" ]; then
log "Updating $name -> $IP_V6"
@curl@/bin/curl -s -X PUT \
"https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$RECORD_ID" \
-H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
-H "Content-Type: application/json" \
-d "{\"type\":\"AAAA\",\"name\":\"${sub}syedm.dev\",\"content\":\"$IP_V6\",\"ttl\":3600,\"proxied\":false}"
-d "{\"type\":\"AAAA\",\"name\":\"$name\",\"content\":\"$IP_V6\",\"ttl\":3600,\"proxied\":false}"
log "Updated $name"
else
log "No AAAA record found for $name"
fi
done
echo "$IP_V6" > "$cache_v6"
else
log "IPv6 unchanged"
fi
fi
log "DDNS update finished"