check_uosserver_version.sh

check_uosserver_version.sh

#!/bin/bash

echo "Querying Ubiquiti for the latest UniFi OS Server (Linux x64)..."

API_URL="https://fw-update.ubnt.com/api/firmware?filter=eq~~product~~unifi-os-server&filter=eq~~channel~~release&filter=eq~~platform~~linux-x64&sort=-version&limit=1"
if command -v curl &> /dev/null; then
    PAYLOAD=$(curl -sL "$API_URL")
elif command -v wget &> /dev/null; then
    PAYLOAD=$(wget -qO- "$API_URL")
else
    echo "Error: Neither curl nor wget is installed on this system."
    exit 1
fi

if [[ -z "$PAYLOAD" ]]; then
    echo "Error: Failed to fetch data from the API."
    exit 1
fi

# Extract the raw version string, then normalize it to just the numbers (e.g., 4.2.23)
RAW_LATEST=$(echo "$PAYLOAD" | grep -o '"version":"[^"]*"' | head -n 1 | cut -d'"' -f4)
LATEST_VERSION=$(echo "$RAW_LATEST" | grep -oE '[0-9]+(\.[0-9]+)+' | head -n 1)

# Extract the download link
DOWNLOAD_URL=$(echo "$PAYLOAD" | grep -o '"data":{"href":"[^"]*"' | head -n 1 | cut -d'"' -f6)

if [[ -z "$LATEST_VERSION" || -z "$DOWNLOAD_URL" ]]; then
    echo "Error: Failed to parse the latest version information."
    exit 1
fi

# ---------------------------------------------------------
# Check if UniFi OS Server is already installed
# ---------------------------------------------------------
INSTALLED_VERSION="Not Installed"
UPDATE_AVAILABLE="N/A"

if command -v uosserver &> /dev/null || [[ -f "/usr/local/bin/uosserver" ]]; then
    UOS_BIN=$(command -v uosserver 2>/dev/null || echo "/usr/local/bin/uosserver")
    
    # Try to execute the binary and extract the raw version output
    RAW_INSTALLED=$("$UOS_BIN" --version 2>/dev/null || "$UOS_BIN" version 2>/dev/null)
    
    # Normalize the output to just the numbers to match the LATEST_VERSION format
    EXTRACTED_VERSION=$(echo "$RAW_INSTALLED" | grep -oE '[0-9]+(\.[0-9]+)+' | head -n 1)
    
    if [[ -n "$EXTRACTED_VERSION" ]]; then
        INSTALLED_VERSION="$EXTRACTED_VERSION"
        
        # Compare versions using 'sort -V' (version sort)
        if [[ "$INSTALLED_VERSION" == "$LATEST_VERSION" ]]; then
            UPDATE_AVAILABLE="No (System is up to date)"
        else
            # sort -V puts the lowest version first. If the last item is LATEST_VERSION, an update is ready.
            HIGHEST=$(printf "%s\n%s" "$INSTALLED_VERSION" "$LATEST_VERSION" | sort -V | tail -n 1)
            if [[ "$HIGHEST" == "$LATEST_VERSION" ]]; then
                UPDATE_AVAILABLE="Yes (Update to $LATEST_VERSION)"
            else
                UPDATE_AVAILABLE="No (Installed version is somehow newer)"
            fi
        fi
    else
        INSTALLED_VERSION="Installed (Version Unknown)"
        UPDATE_AVAILABLE="Unknown (Could not parse local version)"
    fi
fi

# ---------------------------------------------------------
# Output Summary
# ---------------------------------------------------------
echo ""
echo "=================================================="
echo "UniFi OS Server (Linux x64)"
echo "=================================================="
echo "Installed Version : $INSTALLED_VERSION"
echo "Latest Version    : $LATEST_VERSION"
echo "Update Available  : $UPDATE_AVAILABLE"
echo "Download URL      : $DOWNLOAD_URL"
echo "=================================================="
echo ""