Automation script for installing the Ubiquiti UniFi Controller as a Windows Service. This takes care of doing tedious things like setting JAVA_HOME or including it within your PATH variable. Use at your own risk!

InstallUnifiService.ps1

# Written by Mike Bantegui (Last Updated 2015-03-05)
# Use at your own caution! I take no responsibility for any damage you may cause on your system.
# Known to support: Windows Server 2012 R2

function Request-ElevatedPrompt
{
	# Adapted from Benjamin Armstrong's "A self elevating PowerShell script"
	# http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/09/23/a-self-elevating-powershell-script.aspx
	$identity = [System.Security.Principal.WindowsIdentity]::GetCurrent()
	$principal = New-Object System.Security.Principal.WindowsPrincipal($identity)
	$admin = [System.Security.Principal.WindowsBuiltInRole]::Administrator

	if (!$principal.IsInRole($admin))
	{
		$process = New-Object System.Diagnostics.ProcessStartInfo "PowerShell.exe"
		$process.Arguments = $MyInvocation.MyCommand.Definition
		$process.Verb = "Runas"
		[System.Diagnostics.Process]::Start($process)
		Exit 
	}

	Write-Host "Running as elevated command prompt"
}

function Get-JavaHome
{
	$architecture = (Get-WmiObject Win32_OperatingSystem).OSArchitecture
	
	if ($achitecture -like "64-bit")
	{
		$java32 = (Get-ChildItem -Path "C:\Program Files (x86)" -Recurse -Filter "java.exe" -ErrorAction SilentlyContinue | Select -First 1)
		if ($java32 -eq $null)
		{
			Write-Error "Must have the 32-bit JRE installed on x64 platforms. Please download and install the latest 32-bit Java from 'https://java.com/en/download/'"
			Exit
		}
		else
		{
			Write-Host "Found 32-bit Java ('$java32')."
		}
	}

	$javaHome = (Get-ChildItem -Path "C:\" -Recurse -Filter "java.exe" -ErrorAction SilentlyContinue | Select -First 1).DirectoryName
	if ($javaHome -eq $null)
	{
		Write-Error "Could not find any Java installations. Please download and install the latest Java from 'https://java.com/en/download/'"
		Exit
	}

	Write-Host "Found Java bin directory (using '$javaHome')."
	return $javaHome
}

function Get-UnifiHome
{
	$unifiHome = (Get-ChildItem -Path "C:\Users" -Recurse -Filter "Ubiquiti UniFi" | Select -First 1).FullName
	if ($unifiHome -eq $null)
	{
		Write-Error "Could not find any UniFi controller installations. Please download and install the latest UniFi controller from 'https://www.ubnt.com/download/'"
		Exit
	}

	Write-Host "Found UniFi installation directory (using '$unifi')."
	return $unifiHome
}

function Grant-ControllerFirewallAccess
{
	$filter = Get-NetFirewallPortFilter -Protocol TCP | ? { $_.LocalPort -eq 8443 }

	if ($filter)
	{
		$matchingRules = $filter | Get-NetFirewallRule
		$validRules =  $matchingRules | ? { $_.Action -eq "Allow" -and $_.Enabled -eq "True" }
		if ($validRules -ne $null -and $validRules.Length -eq $matchingRules.Length)
		{
			Write-Host "No need to configure firewall"
			Return
		}
		else
		{
			Write-Warning "Warning: More than one rule was found for TCP Port 8443. Please verify that no rules will block inbound access"
			Write-Warning "Matching Firewall rules for TCP 8443:"
			$matchingRules | % { Write-Warning ("{0} ({1} - {2})" -f $_.DisplayName,$_.Action,$_.Enabled) }
		}
	}

	Write-Host "Configuring Firewall Rule 'UniFi Controller' to allow inbound access on port 8443"
	New-NetFirewallRule -Action Allow -Direction Inbound -DisplayName "UniFi Controller" -Enabled True -LocalPort 8443 -Protocol "TCP"
}

Request-ElevatedPrompt
$java = Get-JavaHome
$unifi = Get-UnifiHome

Write-Host "Setting JAVA_HOME environment variable"
[System.Environment]::SetEnvironmentVariable("JAVA_HOME", $javaHome, "Machine")

$key = [Microsoft.Win32.Registry]::LocalMachine.OpenSubKey("SYSTEM\CurrentControlSet\Control\Session Manager\Environment", $true)
$path = $key.GetValue("Path", $null, "DoNotExpandEnvironmentNames")

if (!($path -Like "*%JAVA_HOME%*"))
{
	Write-Host "Adding JAVA_HOME to PATH environment variable"
	
	if (!$path.EndsWith(";"))
	{
		$path += ";"
	}
	$path += "%JAVA_HOME%"
	$key.SetValue("Path", $path, "ExpandString")
}
else
{
	Write-Host "PATH already contains JAVA_HOME"
}
$key.Dispose()


Push-Location $unifi

Write-Host "Installing UniFi Controller as service"
& "java.exe" "-jar" ".\lib\ace.jar" "installsvc"

Start-Service -Name "UniFi"

Pop-Location

# Comment the following line if you do not need to grant firewall access
Grant-ControllerFirewallAccess