From 3f54d187730ba18109b0946ed7bc142da36259bd Mon Sep 17 00:00:00 2001
From: Shihaam Abdul Rahman <shihaam_ab_r@outlook.com>
Date: Wed, 27 Oct 2021 05:53:11 +0500
Subject: [PATCH] CF-DDNS

---
 cf-ddns/README.md     |  4 ++++
 cf-ddns/cfddns.sh     | 44 +++++++++++++++++++++++++++++++++++++++++++
 cf-ddns/env.sample    |  8 ++++++++
 cf-ddns/run-cdddns.sh |  4 ++++
 4 files changed, 60 insertions(+)
 create mode 100644 cf-ddns/README.md
 create mode 100644 cf-ddns/cfddns.sh
 create mode 100644 cf-ddns/env.sample
 create mode 100644 cf-ddns/run-cdddns.sh

diff --git a/cf-ddns/README.md b/cf-ddns/README.md
new file mode 100644
index 0000000..21b08c6
--- /dev/null
+++ b/cf-ddns/README.md
@@ -0,0 +1,4 @@
+# Cloudflare DDNS 
+
+## Requirements
+`bash curl jq screen`
diff --git a/cf-ddns/cfddns.sh b/cf-ddns/cfddns.sh
new file mode 100644
index 0000000..e056c29
--- /dev/null
+++ b/cf-ddns/cfddns.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+
+#Import Credentials
+source .env 2> /dev/null
+
+fetchzoneid(){
+        FETCHZONEID=$(curl -s $CF_API_URL/zones?name=$CF_ROOT_ZONE \
+                        -H Content-Type:application/json \
+                        -H X-Auth-Key:$CF_API_KEY \
+                        -H X-Auth-Email:$CF_EMAIL)
+        CF_ZONE_ID=$(echo $FETCHZONEID  | jq -r '.result | .[] | .id')
+}
+
+fetchdnsid(){
+        FETCHDNSID=$(curl -s $CF_API_URL/zones/$CF_ZONE_ID/dns_records?name=$CF_DOMAIN \
+                        -H Content-Type:application/json \
+                        -H X-Auth-Key:$CF_API_KEY \
+                        -H X-Auth-Email:$CF_EMAIL)
+        CF_DNS_ID=$(echo $FETCHDNSID | jq -r '.result | .[] | .id')
+}
+
+getip(){
+        MY_IP=$(curl -s $WHATISMYIP)
+}
+getdatetime(){
+        TIME=$(date)
+}
+updateip(){
+        curl -s -X PUT $CF_API_URL/zones/$CF_ZONE_ID/dns_records/$CF_DNS_ID \
+                -H Content-Type:application/json \
+                -H X-Auth-Key:$CF_API_KEY \
+                -H X-Auth-Email:$CF_EMAIL \
+                --data '{"type":"A","name":"'${CF_DOMAIN}'","content":"'${MY_IP}'","ttl":120,"proxied":false}' > /dev/null
+}
+
+fetchzoneid
+fetchdnsid
+while true; do
+        getip
+        updateip
+        getdatetime
+        (echo $MY_IP - $TIME) |  tee -a ip.log
+        sleep $DELAY
+done
diff --git a/cf-ddns/env.sample b/cf-ddns/env.sample
new file mode 100644
index 0000000..9f8f5f9
--- /dev/null
+++ b/cf-ddns/env.sample
@@ -0,0 +1,8 @@
+CF_ROOT_ZONE='' # Root domain
+CF_EMAIL='' #Cloudflare Login email 
+CF_API_KEY='' #Cloudflare API Key, get it here https://dash.cloudflare.com/profile/api-tokens
+CF_DOMAIN='' # Domain to change IP address of
+DELAY='600' #Defines how often to check and update IP address 
+
+WHATISMYIP='https://whatismyip.shihaam.me' #Any website that returns vistor IP address
+CF_API_URL='https://api.cloudflare.com/client/v4' #prolly dont need to change this
diff --git a/cf-ddns/run-cdddns.sh b/cf-ddns/run-cdddns.sh
new file mode 100644
index 0000000..61b7c7d
--- /dev/null
+++ b/cf-ddns/run-cdddns.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1
+screen -S ddns -p 0 -X quit
+screen -S "ddns" -U -m -d bash update-home-ip-cf.sh