shelly_firmware: Initial version of role

roles/shelly_firmware/files/download-shelly-firmware.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+
+set -eu
+
+umask 022
+
+cd /srv/web/iot.foo.sh/shelly
+
+PATH="/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin"
+
+URL="http://archive.shelly-tools.de/"
+
+for _prod in $(curl -sSf "${URL}/archive.php" | jq -r '.[].type') ; do
+    _ver="$(curl -sSf "${URL}/archive.php?type=${_prod}" | jq -r \
+        'max_by(.version[1:] | split(".") | map(try tonumber catch 0)) .version')"
+    _name="$(curl -sSf "${URL}/archive.php?type=${_prod}" | jq -r \
+        'limit(1; .[].file)')"
+    if [ ! -f "${_prod}.${_ver}.zip" ]; then
+        echo "New firmware for ${_prod} (version ${_ver})"
+        curl -sSf -o "${_prod}.${_ver}.zip" "${URL}/version/${_ver}/${_name}"
+	if [ -h "$_name" ]; then
+            rm -f "$_name"
+	fi
+	ln -s "${_prod}.${_ver}.zip" "$_name"
+    fi
+done