PreDeploy.ps1

Import-Module WebAdministration

	$port = 80
	$ssl = $false

#App Start
SetupOptionalVariables
SetupAppPools
SetupWebSite
SetupWebApplication
SetupAuthentication
SetupElmahSubject
SetupACLForPulseDB

function SetupVariables {

	if($siteName -eq $null)
	{
		$siteName = $OctopusWebSiteName
	}

	if($webApplicationAppPool -eq $null)
	{
		$webApplicationAppPool = $appPoolName
	}
}

function SetupAppPool {
	param ($poolName)
	try {
		$ap = Get-WebAppPoolState | Where {$_.Name -eq $poolName}
		if($ap -eq $null) {
			write-host "no App Pool setup, creating... $poolName"     
			New-WebAppPool $poolName 
			Set-ItemProperty IIS:\AppPools\$poolName managedRuntimeVersion v4.0
		}
	}
	catch {
		throw "Error while attempting to create a new app pool called $poolName"
	}
}
		
function SetupAppPools {
	SetupAppPool $appPoolName
	if($appPoolName -ne $webApplicationPoolName) {
		SetupAppPool $webApplicationPoolName
	}
}

function SetupWebSite {
	try {
		$ws = Get-Website | Where {$_.Name -eq $siteName} 
		if($ws -eq $null) {        
			write-host "no web site setup, creating..."         
			$webApp = New-Website -Name $siteName -Port $port -HostHeader $hostHeader -ApplicationPool $appPoolName -Ssl:$ssl -PhysicalPath c:\inetpub\wwwroot       

			if($hostHeaderAlt -ne $null) {
				write-host "adding alt host header"
				New-WebBinding -Name $siteName -IPAddress "*" -Port $port -HostHeader $hostHeaderAlt
			}
		} 
		else {        
			write-host "Web Site Already setup, skipping..." 
		}
	}
	catch {
		throw "Error while creating web site: $siteName"
	}
}

function SetupWebApplication {
	try {
		if($webApplication -ne $null) {
			write-host "Web Application defined. Checking if it already exists."
			$app = Get-WebApplication -Site $OctopusWebSiteName -Name $webApplication
			if ($app -eq $null) 
			{
				write-host "Web Application does not exist. Creating ..."
				New-WebApplication -Site $OctopusWebSiteName -Name $webApplication -PhysicalPath "c:\inetpub\wwwroot" -ApplicationPool $webApplicationAppPool
			}
			else {		
				 write-host "Web Application already exist. Skipping..."
			}
		}
	}
	catch {
		throw "Error while creating the web application: $webApplication"
	}
}

function SetupAuthentication {
	try {
		if($allowWindowsAuth) {
			$windowsAuthServer = Get-WebConfigurationLock -PSPath "IIS:\" -Filter //windowsAuthentication #-Name enabled

			Write-Host "value: " $windowsAuthServer.Value

			if($windowsAuthServer.Value -ne $null) {
				Write-Host "Unlocking Windows Auth Override on Server"
				Remove-WebConfigurationLock -PSPath "IIS:\" -Filter //windowsAuthentication 
			}
			else {
				Write-Host "Windows Auth Override on Server already set to Allow, skipping..."
			}
			
			$webAppSetForWindowAuth = Get-WebConfigurationProperty -filter /system.WebServer/security/authentication/windowsAuthentication -name enabled -location $OctopusWebSiteName
			
			
			if(!$webAppSetForWindowAuth.Value) {
				Write-Host "Windows Auth not set for this web app, enabling"
				Set-WebConfigurationProperty -filter /system.WebServer/security/authentication/windowsAuthentication -name enabled -value true -location $OctopusWebSiteName
			}
			else {
				 Write-Host "Windows Auth is already enabled for the web app $OctopusWebsiteName , skipping..."
			}
		}
		else {
			Write-Host "Use WindowsAuth Not configured, moving on"
		}
	}
	catch {
		throw "Error while setting up Authentication"
	}
}

function SetupElmahSubject {
	$original_file = 'Web.config'
	$destination_file =  'Web.config'
	$searchText = 'ELMAH_EMAIL_SUBJECT'
	$newText = $OctopusProjectName + ' - Env:' + $OctopusEnvironmentName + ' Server: ' + $OctopusMachineName + ' Ver: ' + $OctopusPackageVersion

	Write-Host "Setting Elmah Email Subject to: " + $newText
	(Get-Content $original_file) | Foreach-Object {
		$_ -replace $searchText, $newText
		} | Set-Content $destination_file
}

function SetupACLForPulseDB {
	Write-Host "Setting ACLs for App_Data folder to let Pulse log correctly"

	$directory = "D:\Octopus\Tentacle\Applications\" + $OctopusPackageNameAndVersion + "\App_Data\Pulse.sdf"
	Write-Host "checking ACL on: " $directory
	
	if (Test-Path $directory) 
	{
		$acl = Get-Acl $directory
		$permission = "IIS AppPool\$appPoolName","Read,ExecuteFile,Write","Allow"
		$accessRule = New-Object System.Security.AccessControl.FileSystemAccessRule $permission
		Write-Host "Setting ACL on: " $directory
		$acl.SetAccessRule($accessRule)
		$acl | Set-Acl $directory
	}
	else
	{
		throw "The dir/file $directory can't be found"
	}
}