iamthefij
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docker-cloudflare-ddns
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WIP: Get started squashing things down

This commit is contained in:
IamTheFij 2020-01-21 17:46:39 -08:00
parent de8cf7aab8
commit b11d6f6d88
4 changed files with 9 additions and 166 deletions
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3
Dockerfile
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@ -1,9 +1,10 @@
ARG REPO=library
FROM multiarch/qemu-user-static:4.1.0-1 as qemu-user-static
FROM ${REPO}/python:3-alpine
# TODO: Copy from docker hub image
ARG ARCH=x86_64
COPY ./build/qemu-${ARCH}-static /usr/bin/
COPY --from=qemu-user-static /usr/bin/qemu-* /usr/bin/
RUN mkdir -p /src
WORKDIR /src

20
Makefile
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@ -1,5 +1,5 @@
DOCKER_TAG ?= cloudflare-ddns-dev-${USER}
.PHONY: clean all
.PHONY: clean
.PHONY: default
default: test
@ -9,26 +9,20 @@ test:
@echo ok
.PHONY: build
build: build/qemu-x86_64-static
build:
docker build . -t ${DOCKER_TAG}
build/qemu-arm-static:
./get_qemu.sh arm
build/qemu-x86_64-static:
./get_qemu.sh x86_64
build/qemu-aarch64-static:
./get_qemu.sh aarch64
.PHONY: cross-build-arm
cross-build-arm: build/qemu-arm-static
cross-build-arm:
docker build --build-arg REPO=arm32v6 --build-arg ARCH=arm . -t ${DOCKER_TAG}-linux-arm
.PHONY: cross-build-arm64
cross-build-arm64: build/qemu-aarch64-static
cross-build-arm64:
docker build --build-arg REPO=arm64v8 --build-arg ARCH=aarch64 . -t ${DOCKER_TAG}-linux-arm64
.PHONY: all
all: build cross-build-arm cross-build-arm64
.PHONY: run
run: build
docker run --rm \

13
get_qemu.sh
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@ -1,13 +0,0 @@
#! /bin/bash
HOST_ARCH=x86_64
VERSION=v2.9.1-1
mkdir -p build
cd build
for target_arch in $*; do
wget -N https://github.com/multiarch/qemu-user-static/releases/download/$VERSION/${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
tar -xvf ${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
rm ${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
done

139
update_ddns.py
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@ -1,139 +0,0 @@
#!/usr/bin/env python
"""Cloudflare API code - example"""
from __future__ import print_function
import os
import sys
import re
import json
import requests
sys.path.insert(0, os.path.abspath('..'))
import CloudFlare
def my_ip_address():
"""Cloudflare API code - example"""
# This list is adjustable - plus some v6 enabled services are needed
# url = 'http://myip.dnsomatic.com'
# url = 'http://www.trackip.net/ip'
# url = 'http://myexternalip.com/raw'
url = 'https://api.ipify.org'
try:
ip_address = requests.get(url).text
except:
exit('%s: failed' % (url))
if ip_address == '':
exit('%s: failed' % (url))
if ':' in ip_address:
ip_address_type = 'AAAA'
else:
ip_address_type = 'A'
return ip_address, ip_address_type
def do_dns_update(cf, zone_name, zone_id, dns_name, ip_address, ip_address_type):
"""Cloudflare API code - example"""
try:
params = {'name':dns_name, 'match':'all', 'type':ip_address_type}
dns_records = cf.zones.dns_records.get(zone_id, params=params)
except CloudFlare.exceptions.CloudFlareAPIError as e:
exit('/zones/dns_records %s - %d %s - api call failed' % (dns_name, e, e))
updated = False
# update the record - unless it's already correct
for dns_record in dns_records:
old_ip_address = dns_record['content']
old_ip_address_type = dns_record['type']
if ip_address_type not in ['A', 'AAAA']:
# we only deal with A / AAAA records
continue
if ip_address_type != old_ip_address_type:
# only update the correct address type (A or AAAA)
# we don't see this becuase of the search params above
print('IGNORED: %s %s ; wrong address family' % (dns_name, old_ip_address))
continue
if ip_address == old_ip_address:
print('UNCHANGED: %s %s' % (dns_name, ip_address))
updated = True
continue
# Yes, we need to update this record - we know it's the same address type
dns_record_id = dns_record['id']
dns_record = {
'name':dns_name,
'type':ip_address_type,
'content':ip_address
}
try:
dns_record = cf.zones.dns_records.put(zone_id, dns_record_id, data=dns_record)
except CloudFlare.exceptions.CloudFlareAPIError as e:
exit('/zones.dns_records.put %s - %d %s - api call failed' % (dns_name, e, e))
print('UPDATED: %s %s -> %s' % (dns_name, old_ip_address, ip_address))
updated = True
if updated:
return
# no exsiting dns record to update - so create dns record
dns_record = {
'name':dns_name,
'type':ip_address_type,
'content':ip_address
}
try:
dns_record = cf.zones.dns_records.post(zone_id, data=dns_record)
except CloudFlare.exceptions.CloudFlareAPIError as e:
exit('/zones.dns_records.post %s - %d %s - api call failed' % (dns_name, e, e))
print('CREATED: %s %s' % (dns_name, ip_address))
def main():
"""Cloudflare API code - example"""
try:
dns_name = sys.argv[1]
except IndexError:
exit('usage: example-update-dynamic-dns.py fqdn-hostname')
host_name, zone_name = '.'.join(dns_name.split('.')[:2]), '.'.join(dns_name.split('.')[-2:])
ip_address, ip_address_type = my_ip_address()
print('MY IP: %s %s' % (dns_name, ip_address))
cf = CloudFlare.CloudFlare()
# grab the zone identifier
try:
params = {'name':zone_name}
zones = cf.zones.get(params=params)
except CloudFlare.exceptions.CloudFlareAPIError as e:
exit('/zones %d %s - api call failed' % (e, e))
except Exception as e:
exit('/zones.get - %s - api call failed' % (e))
if len(zones) == 0:
exit('/zones.get - %s - zone not found' % (zone_name))
if len(zones) != 1:
exit('/zones.get - %s - api call returned %d items' % (zone_name, len(zones)))
zone = zones[0]
zone_name = zone['name']
zone_id = zone['id']
do_dns_update(cf, zone_name, zone_id, dns_name, ip_address, ip_address_type)
exit(0)
if __name__ == '__main__':
main()