From 4aede8cc512a1609d08b10682d3b26b695bc202b Mon Sep 17 00:00:00 2001
From: Pascal Vizeli <pascal.vizeli@syshack.ch>
Date: Thu, 11 May 2017 15:52:53 +0200
Subject: [PATCH] Add add-on duckDNS (#40)

Add add-on duckDNS
---
 duckdns/Dockerfile  | 14 ++++++++++++++
 duckdns/config.json | 19 +++++++++++++++++++
 duckdns/run.sh      | 22 ++++++++++++++++++++++
 3 files changed, 55 insertions(+)
 create mode 100644 duckdns/Dockerfile
 create mode 100644 duckdns/config.json
 create mode 100644 duckdns/run.sh

diff --git a/duckdns/Dockerfile b/duckdns/Dockerfile
new file mode 100644
index 0000000..0a6936b
--- /dev/null
+++ b/duckdns/Dockerfile
@@ -0,0 +1,14 @@
+FROM %%BASE_IMAGE%%
+
+# Add version
+ENV VERSION %%VERSION%%
+ENV LANG C.UTF-8
+
+# Setup base
+RUN apk add --no-cache jq curl
+
+# Copy data
+COPY run.sh /
+RUN chmod a+x /run.sh
+
+CMD [ "/run.sh" ]
diff --git a/duckdns/config.json b/duckdns/config.json
new file mode 100644
index 0000000..0753d60
--- /dev/null
+++ b/duckdns/config.json
@@ -0,0 +1,19 @@
+{
+  "name": "Duck DNS",
+  "version": "0.1",
+  "slug": "duckdns",
+  "description": "Free dynamic DNS hosted on Amazon VPC",
+  "url": "https://home-assistant.io/addons/duckdns/",
+  "startup": "before",
+  "boot": "auto",
+  "options": {
+    "token": null,
+    "domains": [null],
+    "seconds": 300
+  },
+  "schema": {
+    "token": "email",
+    "domain": ["str"],
+    "seconds": "int"
+  }
+}
diff --git a/duckdns/run.sh b/duckdns/run.sh
new file mode 100644
index 0000000..6af9056
--- /dev/null
+++ b/duckdns/run.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+set -e
+
+CONFIG_PATH=/data/options.json
+
+TOKEN=$(jq --raw-output ".token" $CONFIG_PATH)
+DOMAINS=$(jq --raw-output ".domains[]" $CONFIG_PATH)
+SECONDS=$(jq --raw-output ".seconds" $CONFIG_PATH)
+
+for line in $DOMAINS; do
+    if [ -z "$DOMAIN_ARG" ]; then
+        DOMAIN_ARG="$line"
+    else
+        DOMAIN_ARG="$DOMAIN_ARG,$line"
+    fi
+done
+
+#
+while true; do
+    curl -k "https://www.duckdns.org/update?domains=$DOMAIN_ARG&token=$TOKEN&ip="
+    sleep "$SECONDS"
+done