finish-upgrade: helper for finishing updates

This script provides a method for users to complete an upgrade
that requires elevated privileges via ssh.

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>

scripts/finish-upgrade.sh

@@ -0,0 +1,104 @@
+#!/bin/bash
+#  Helper script for completing service upgrades via ssh
+
+ADDRESS="localhost"
+PORT="7125"
+API_KEY=""
+
+# Python Helper Scripts
+check_sudo_request=$( cat << EOF
+import sys
+import json
+try:
+  ret = json.load(sys.stdin)
+except Exception:
+  exit(0)
+entries = ret.get('result', {}).get('entries', [])
+for item in entries:
+   if item['dismissed'] is False and item['title'] == 'Sudo Password Required':
+     sys.stdout.write('true')
+     exit(0)
+sys.stdout.write('false')
+EOF
+)
+
+check_pw_response=$( cat << EOF
+import sys
+import json
+try:
+  ret = json.load(sys.stdin)
+except Exception:
+  exit(0)
+responses = ret.get('result', {}).get('sudo_responses', [])
+if responses:
+  sys.stdout.write('\n'.join(responses))
+EOF
+)
+
+print_help_message()
+{
+    echo "Utility to complete privileged upgrades for Moonraker"
+    echo
+    echo "usage: finish-upgrade.sh [-h] [-a <address>] [-p <port>] [-k <api_key>]"
+    echo
+    echo "optional arguments:"
+    echo "  -h                show this message"
+    echo "  -a <address>      address for Moonraker instance"
+    echo "  -p <port>         port for Moonraker instance"
+    echo "  -k <api_key>      API Key for authorization"
+}
+
+while getopts "a:p:k:h" arg; do
+    case $arg in
+        a) ADDRESS=${OPTARG};;
+        b) PORT=${OPTARG};;
+        k) API_KEY=${OPTARG};;
+        h)
+          print_help_message
+          exit 0
+          ;;
+    esac
+done
+
+base_url="http://${ADDRESS}:${PORT}"
+
+echo "Completing Upgrade for Moonraker at ${base_url}"
+echo "Requesting Announcements..."
+ann_url="${base_url}/server/announcements/list"
+curl_cmd=(curl -f -s -S "${ann_url}")
+[ -n "${API_KEY}" ] && curl_cmd+=(-H "X-Api-Key: ${API_KEY}")
+result="$( "${curl_cmd[@]}" 2>&1 )"
+if [ $? -ne 0 ]; then
+    echo "Moonraker announcement request failed with error: ${result}"
+    echo "Make sure the address and port are correct.  If authorization"
+    echo "is required supply the API Key with the -k option."
+    exit -1
+fi
+has_req="$( echo "$result" | python3 -c "${check_sudo_request}" )"
+if [ "$has_req" != "true" ]; then
+    echo "No sudo request detected, aborting"
+    exit -1
+fi
+
+# Request Password, send to Moonraker
+echo "Sudo request announcement found, please enter your password"
+read -sp "Password: " passvar
+echo -e "\n"
+sudo_url="${base_url}/machine/sudo/password"
+curl_cmd=(curl -f -s -S -X POST "${sudo_url}")
+curl_cmd+=(-d "{\"password\": \"${passvar}\"}")
+curl_cmd+=(-H "Content-Type: application/json")
+[ -n "$API_KEY" ] && curl_cmd+=(-H "X-Api-Key: ${API_KEY}")
+
+result="$( "${curl_cmd[@]}" 2>&1)"
+if [ $? -ne 0 ]; then
+    echo "Moonraker password request failed with error: ${result}"
+    echo "Make sure you entered the correct password."
+    exit -1
+fi
+response="$( echo "$result" | python3 -c "${check_pw_response}" )"
+if [ -n "${response}" ]; then
+    echo "${response}"
+else
+    echo "Invalid response received from Moonraker.  Raw result: ${result}"
+fi