#!/bin/bash adguard_test_domain='check.adguard.test' if [[ "$(uname)" == "Darwin" ]]; then # macOS local_ip=$(ifconfig | grep "inet " | grep -v 127.0.0.1 | awk '{print $2}' | head -n1) uptime_seconds=$(sysctl -n kern.boottime | awk '{print $4}' | sed 's/,//') current_time=$(date +%s) uptime_seconds=$((current_time - uptime_seconds)) days=$((uptime_seconds / 86400)) hours=$(( (uptime_seconds % 86400) / 3600 )) minutes=$(( (uptime_seconds % 3600) / 60 )) uptime="up " [[ $days -gt 0 ]] && uptime+="$days days, " [[ $hours -gt 0 ]] && uptime+="$hours hours, " uptime+="$minutes minutes" else # Linux local_ip=$(hostname -I | awk '{print $1}') uptime=$(uptime -p) fi wan_info=$(curl -s --max-time 10 https://am.i.mullvad.net/json) wan_connected=false if [ ! -z "$wan_info" ]; then wan_connected=true wan_ip=$(echo "$wan_info" | jq -r '.ip') mullvad_exit_ip=$(echo "$wan_info" | jq '.mullvad_exit_ip') blacklisted=$(echo "$wan_info" | jq '.blacklisted.blacklisted') else wan_ip="Unavailable" mullvad_exit_ip=false blacklisted=false fi # Check if Tailscale is installed and get IP if command -v tailscale &> /dev/null; then has_tailscale=true tailscale_ip=$(tailscale ip -4) # Get Tailscale exit-node information ts_exitnode_output=$(tailscale exit-node list) # Parse exit node hostname if echo "$ts_exitnode_output" | grep -q 'selected'; then mullvad_exitnode=true # Extract the hostname of the selected exit node, taking only the part before any newline mullvad_hostname=$(echo "$ts_exitnode_output" | grep 'selected' | awk '{print $2}' | awk -F'\n' '{print $1}') else mullvad_exitnode=false mullvad_hostname="" fi else has_tailscale=false tailscale_ip="Not installed" mullvad_exitnode=false mullvad_hostname="" fi nextdns_info=$(curl -sL --max-time 10 https://test.nextdns.io) if [ -z "$nextdns_info" ]; then echo "Failed to fetch NextDNS status or no internet connection." >&2 nextdns_connected=false nextdns_protocol="" nextdns_client="" else nextdns_status=$(echo "$nextdns_info" | jq -r '.status') if [ "$nextdns_status" = "ok" ]; then nextdns_connected=true nextdns_protocol=$(echo "$nextdns_info" | jq -r '.protocol') nextdns_client=$(echo "$nextdns_info" | jq -r '.clientName') else nextdns_connected=false nextdns_protocol="" nextdns_client="" fi fi # Check AdGuard Home DNS resolved_ip=$(dig +short $adguard_test_domain) if [[ $resolved_ip =~ ^100\. ]]; then adguard_connected=true adguard_protocol="AdGuard Home" adguard_client="$resolved_ip" else adguard_connected=false adguard_protocol="" adguard_client="" fi # Output JSON using jq for proper formatting and escaping jq -n \ --arg local_ip "$local_ip" \ --argjson wan_connected "$wan_connected" \ --arg wan_ip "$wan_ip" \ --argjson has_tailscale "$has_tailscale" \ --arg tailscale_ip "$tailscale_ip" \ --argjson mullvad_exitnode "$mullvad_exitnode" \ --arg mullvad_hostname "$mullvad_hostname" \ --argjson mullvad_exit_ip "$mullvad_exit_ip" \ --argjson blacklisted "$blacklisted" \ --argjson nextdns_connected "$nextdns_connected" \ --arg nextdns_protocol "$nextdns_protocol" \ --arg nextdns_client "$nextdns_client" \ --argjson adguard_connected "$adguard_connected" \ --arg adguard_protocol "$adguard_protocol" \ --arg adguard_client "$adguard_client" \ --arg uptime "$uptime" \ '{ local_ip: $local_ip, wan_connected: $wan_connected, wan_ip: $wan_ip, has_tailscale: $has_tailscale, tailscale_ip: $tailscale_ip, mullvad_exitnode: $mullvad_exitnode, mullvad_hostname: $mullvad_hostname, mullvad_exit_ip: $mullvad_exit_ip, blacklisted: $blacklisted, nextdns_connected: $nextdns_connected, nextdns_protocol: $nextdns_protocol, nextdns_client: $nextdns_client, adguard_connected: $adguard_connected, adguard_protocol: $adguard_protocol, adguard_client: $adguard_client, uptime: $uptime }'