DSCResources/MSFT_WorkflowManagerInstall/MSFT_WorkflowManagerInstall.psm1

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$script:UninstallPathManager = "SOFTWARE\Microsoft\Workflow Manager"
$script:UninstallPathServiceBus = "SOFTWARE\Microsoft\Service Bus"
$script:UninstallPathClient = "SOFTWARE\Microsoft\Workflow Manager Client"
$script:InstallKeyPattern = "[0-9].[0-9]"
$script:UninstallRegKey = "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall"

function Get-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Collections.Hashtable])]
    param
    (
        [parameter(Mandatory = $true)]
        [System.String]
        [ValidateSet("Present", "Absent")]
        $Ensure,

        [parameter(Mandatory = $true)]
        [System.String]
        $WebPIPath,

        [parameter(Mandatory = $true)]
        [System.String]
        $XMLFeedPath,

        [parameter()]
        [System.String]
        [ValidateSet("All", "ClientOnly")]
        $ComponentsToInstall = "All"
    )
    Write-Verbose -Message "Getting details of installation of the Workflow Manager"

    if ($Ensure -eq "Absent")
    {
        throw "Uninstallation is not supported by Workflow Manager DSC"
    }

    if (-not (Test-Path -Path $WebPIPath))
    {
        throw "The specified path for the Web Platform Installer does not exist."
    }

    if (-not (Test-Path -Path $XMLFeedPath))
    {
        throw "The specified path for the XML Feed does not exist."
    }

    Write-Verbose -Message "Checking file status of $WebPIPath"
    $zone = Get-Item $WebPIPath -Stream "Zone.Identifier" -EA SilentlyContinue

    if ($null -ne $zone)
    {
        throw ("Setup file is blocked! Please use 'Unblock-File -Path $WebPIPath' " + `
                "to unblock the file before continuing.")
    }

    $matchPath = "HKEY_LOCAL_MACHINE\\$($Script:UninstallPathManager.Replace('\','\\'))" + `
        "\\$script:InstallKeyPattern"
    $wmfPathManager = Get-ChildItem -Path "HKLM:\$Script:UninstallPathManager" -ErrorAction SilentlyContinue | Where-Object -FilterScript {
        $_.Name -match $matchPath
    }

    $matchPath = "HKEY_LOCAL_MACHINE\\$($Script:UninstallPathServiceBus.Replace('\','\\'))" + `
        "\\$script:InstallKeyPattern"
    $wmfPathServiceBus = Get-ChildItem -Path "HKLM:\$Script:UninstallPathServiceBus" -ErrorAction SilentlyContinue | Where-Object -FilterScript {
        $_.Name -match $matchPath
    }

    $matchPath = "HKEY_LOCAL_MACHINE\\$($Script:UninstallPathClient.Replace('\','\\'))" + `
        "\\$script:InstallKeyPattern"
    $wmfPathClient = Get-ChildItem -Path "HKLM:\$Script:UninstallPathClient" -ErrorAction SilentlyContinue | Where-Object -FilterScript {
        $_.Name -match $matchPath
    }

    $localEnsure = "Absent"
    if ($null -ne $wmfPathClient)
    {
        $installedComponent = "ClientOnly"
        $localEnsure = "Present"
    }

    if ($null -ne $wmfPathManager -and $null -ne $wmfPathServiceBus)
    {
        $installedComponent = "All"
        $localEnsure = "Present"
    }

    return @{
        Ensure              = $localEnsure
        WebPIPath           = $WebPIPath
        XMLFeedPath         = $XMLFeedPath
        ComponentsToInstall = $installedComponent
    }
}

function Set-TargetResource
{
    [CmdletBinding()]
    param
    (
        [parameter(Mandatory = $true)]
        [System.String]
        [ValidateSet("Present", "Absent")]
        $Ensure,

        [parameter(Mandatory = $true)]
        [System.String]
        $WebPIPath,

        [parameter(Mandatory = $true)]
        [System.String]
        $XMLFeedPath,

        [parameter()]
        [System.String]
        [ValidateSet("All", "ClientOnly")]
        $ComponentsToInstall = "All"
    )
    Write-Verbose -Message "Starting installation of the Workflow Manager"

    if ($Ensure -eq "Absent")
    {
        throw "Uninstallation is not supported by Workflow Manager DSC"
    }

    if (-not (Test-Path -Path $WebPIPath))
    {
        throw "The specified path for the Web Platform Installer does not exist."
    }

    if (-not (Test-Path -Path $XMLFeedPath))
    {
        throw "The specified path for the XML Feed does not exist."
    }

    Write-Verbose -Message "Checking file status of $WebPIPath"
    $zone = Get-Item $WebPIPath -Stream "Zone.Identifier" -EA SilentlyContinue

    if ($null -ne $zone)
    {
        throw ("Setup file is blocked! Please use 'Unblock-File -Path $WebPIPath' " + `
                "to unblock the file before continuing.")
    }

    Write-Verbose -Message "Checking if WebPIPath is an UNC path"
    $uncInstall = $false
    if ($WebPIPath.StartsWith("\\"))
    {
        Write-Verbose -Message ("Specified WebPIPath is an UNC path. Adding servername to Local " +
            "Intranet Zone")

        $uncInstall = $true

        if ($WebPIPath -match "\\\\(.*?)\\.*")
        {
            $serverName = $Matches[1]
        }
        else
        {
            throw "Cannot extract servername from UNC path. Check if it is in the correct format."
        }

        Set-WMDscZoneMap -Server $serverName
    }

    Write-Verbose -Message 'Reading XMLFeedPath file'
    [xml]$xmlFile = Get-Content -Path $XMLFeedPath

    if ($ComponentsToInstall -eq "All")
    {
        # Install all Workflow Manager components
        Write-Verbose -Message "Installing all Workflow Manager components"

        # If C:\Program Files\Workflow Manager folder exists, install will fail
        # Throw error is the folder exists and contains less than 5 files.
        if ((Test-Path -Path 'C:\Program Files\Workflow Manager') -and `
            ((Get-ChildItem -Path 'C:\Program Files\Workflow Manager' -Recurse).Count -le 5))
        {
            throw 'Folder C:\Program Files\Workflow Manager exists. Please make sure this folder is removed.'
        }

        if ($null -ne ($xmlFile.ChildNodes.entry | Where-Object -FilterScript { $_.productId -eq 'WorkflowManagerRefresh' }))
        {
            Write-Verbose -Message 'Installing Workflow Manager Refresh package'
            $result = Start-WMInstall -ComponentName 'WorkflowManagerRefresh' `
                -WebPIPath $WebPIPath `
                -XMLFeedPath $XMLFeedPath

            switch ($result.ExitCode)
            {
                0
                {
                    Write-Verbose -Message "Installation of the Workflow Manager Refresh succeeded."
                }
                Default
                {
                    throw ("The Workflow Manager Refresh installation failed. " + `
                            "Exit code '$($result.ExitCode)' was returned.")
                }
            }

            $CU5Info = $xmlFile.ChildNodes.entry | Where-Object -FilterScript { $_.productId -eq 'WorkflowCU5' }
            if ($null -ne $CU5Info)
            {
                $cuInstallPath = Join-Path -Path (Split-Path -Path $XMLFeedPath -Parent) -ChildPath $CU5Info.installers.installer.installerFile.relativeInstallerURL -Resolve

                Write-Verbose -Message 'Install package contains Workflow Manager CU5 files, installing.....'
                $arguments = "/quiet"
                $result = Start-Process -FilePath $cuInstallPath `
                    -ArgumentList $arguments `
                    -Wait `
                    -NoNewWindow `
                    -PassThru

                switch ($result.ExitCode)
                {
                    0
                    {
                        Write-Verbose -Message "Installation of the Workflow Manager CU5 succeeded."
                    }
                    Default
                    {
                        throw ("The Workflow Manager CU5 installation failed. " + `
                                "Exit code '$($result.ExitCode)' was returned.")
                    }
                }
            }

            if ($null -ne ($xmlFile.ChildNodes.entry | Where-Object -FilterScript { $_.productId -eq 'ServiceBus_1_1_TLS_1_2' }))
            {
                Write-Verbose -Message 'Install package contains updated Service Bus v1.1 with TLS v1.2 support package, installing.....'

                Write-Verbose -Message 'Removing old Service Bus v1.1 package'
                $uninstallString = (Get-ChildItem -Path $script:UninstallRegKey | Get-ItemProperty -ErrorAction SilentlyContinue | Where-Object { $_.DisplayName -eq 'Service Bus 1.1' }).UninstallString
                $cmd = $uninstallString -split " "
                $result = Start-Process -FilePath $cmd[0] `
                    -ArgumentList "$($cmd[1]) /quiet" -Wait `
                    -NoNewWindow `
                    -PassThru

                switch ($result.ExitCode)
                {
                    0
                    {
                        Write-Verbose -Message "Removal of the Service Bus v1.1 succeeded."
                    }
                    Default
                    {
                        throw ("Removal of the Service Bus v1.1 package failed. " + `
                                "Exit code '$($result.ExitCode)' was returned.")
                    }
                }

                Write-Verbose -Message 'Removing old Windows Fabric package'
                $uninstallString = (Get-ChildItem -Path $script:UninstallRegKey | Get-ItemProperty -ErrorAction SilentlyContinue | Where-Object { $_.DisplayName -eq 'Windows Fabric' }).UninstallString
                $cmd = $uninstallString -split " "
                $result = Start-Process -FilePath $cmd[0] `
                    -ArgumentList "$($cmd[1]) /quiet" -Wait `
                    -NoNewWindow `
                    -PassThru

                switch ($result.ExitCode)
                {
                    0
                    {
                        Write-Verbose -Message "Removal of the Service Bus v1.1 succeeded."
                    }
                    Default
                    {
                        throw ("Removal of the Service Bus v1.1 package failed. " + `
                                "Exit code '$($result.ExitCode)' was returned.")
                    }
                }

                Write-Verbose -Message 'Installing updated Service Bus v1.1 with TLS v1.2 support package, including Service Fabric'
                $result = Start-WMInstall -ComponentName 'ServiceBus_1_1_TLS_1_2' `
                    -WebPIPath $WebPIPath `
                    -XMLFeedPath $XMLFeedPath

                switch ($result.ExitCode)
                {
                    0
                    {
                        Write-Verbose -Message "Installation of the Service Bus v1.1 TLS v1.2 update succeeded."
                    }
                    Default
                    {
                        throw ("The Service Bus v1.1 TLS v1.2 update installation failed. " + `
                                "Exit code '$($result.ExitCode)' was returned.")
                    }
                }
            }

            ### Workaround for reference bug of Microsoft.ServiceBus.dll,
            ### reference is to version 1.8.0.0 but should be to 2.1.0.0
            Add-Type -AssemblyName 'System.EnterpriseServices'

            $publish = New-Object System.EnterpriseServices.Internal.Publish

            $publish.GacInstall("$Env:ProgramFiles\Workflow Manager\1.0\Workflow\WFWebRoot\bin\Microsoft.ServiceBus.dll") # 1.8.0.0
            $publish.GacInstall("$Env:ProgramFiles\Service Bus\1.1\Microsoft.ServiceBus.dll") # 2.1.0.0

            Get-ChildItem -Path "$Env:SystemRoot\Microsoft.NET" -Filter 'machine.config' -Recurse | ForEach-Object -Process {
                $configuration = [xml](Get-Content $_.FullName)
                $nsManager = New-Object 'System.Xml.XmlNamespaceManager' @($configuration.NameTable)
                $nameSpace = 'urn:schemas-microsoft-com:asm.v1'
                $runtime = $configuration.SelectSingleNode('//configuration/runtime', $nsManager)
                $assemblyBindingElemName = 'assemblyBinding'
                $dependentAssemblyElemName = 'dependentAssembly'
                $assemblyIdentityElemName = 'assemblyIdentity'
                $bindingRedirectElemName = 'bindingRedirect'
                $msServiceBusAssemblyName = 'Microsoft.ServiceBus'
                $msServiceBusPublicKeyToken = '31bf3856ad364e35'
                $msServiceBusCulture = 'en-us'
                $msServiceBusAssemblyOldVersion = '1.8.0.0'
                $msServiceBusAssemblyNewVersion = '2.1.0.0'

                if ($null -eq ($assemblyBinding = $runtime.SelectSingleNode(
                            "./*[local-name() = '$assemblyBindingElemName']")))
                {

                    $assemblyBinding = $runtime.AppendChild($configuration.CreateElement($assemblyBindingElemName, $nameSpace))
                }
                if ($null -eq ($dependentAssembly = $assemblyBinding.SelectSingleNode(
                            "./*[local-name() = '$dependentAssemblyElemName'
                        and ./*[local-name() = '$assemblyIdentityElemName'
                        and ./@name='$msServiceBusAssemblyName'
                        and ./@publicKeyToken = '$msServiceBusPublicKeyToken'
                        and ./@culture = '$msServiceBusCulture']]"
)))
                {
                    $dependentAssembly = $assemblyBinding.AppendChild($configuration.CreateElement($dependentAssemblyElemName, $nameSpace))
                    $assemblyIdentity = $dependentAssembly.AppendChild($configuration.CreateElement($assemblyIdentityElemName, $nameSpace))
                    $assemblyIdentity.SetAttribute('name', $msServiceBusAssemblyName)
                    $assemblyIdentity.SetAttribute('publicKeyToken', $msServiceBusPublicKeyToken)
                    $assemblyIdentity.SetAttribute('culture', $msServiceBusCulture)
                    $bindingRedirect = $assemblyIdentity.AppendChild($configuration.CreateElement($bindingRedirectElemName, $nameSpace))
                    $bindingRedirect.SetAttribute('oldVersion', $msServiceBusAssemblyOldVersion)
                    $bindingRedirect.SetAttribute('newVersion', $msServiceBusAssemblyNewVersion)
                }

                $configuration.Save($_.FullName)
            }
            ### End Workaround
        }
        elseif ($null -ne ($xmlFile.ChildNodes.entry | Where-Object -FilterScript { $_.productId -eq 'WorkflowManager' }))
        {
            Write-Verbose -Message 'Installing Workflow Manager RTM package'

            Write-Verbose -Message 'Install package contains Workflow Manager RTM files, installing.....'
            $result = Start-WMInstall -ComponentName 'WorkflowManager' `
                -WebPIPath $WebPIPath `
                -XMLFeedPath $XMLFeedPath

            switch ($result.ExitCode)
            {
                0
                {
                    Write-Verbose -Message "Installation of the Workflow Manager RTM succeeded."
                }
                Default
                {
                    throw ("The Workflow Manager RTM installation failed. " + `
                            "Exit code '$($result.ExitCode)' was returned.")
                }
            }
        }
        else
        {
            throw 'Install packages does not contain Workflow Manager RTM or Refresh files. Aborting!'
        }
    }
    else
    {
        # Install the Workflow Manager Client component
        Write-Verbose -Message "Installing the Workflow Manager Client component"

        if ($null -ne ($xmlFile.ChildNodes.entry | Where-Object -FilterScript { $_.productId -eq 'WorkflowClientCU4' }))
        {
            Write-Verbose -Message 'Installing Workflow Manager Client incl CU 4 package'

            Write-Verbose -Message 'Install package contains Workflow Manager Client incl CU4 files, installing.....'
            $result = Start-WMInstall -ComponentName 'WorkflowClientCU4' `
                -WebPIPath $WebPIPath `
                -XMLFeedPath $XMLFeedPath

            switch ($result.ExitCode)
            {
                0
                {
                    Write-Verbose -Message "Installation of the Workflow Manager Client incl CU4 succeeded."
                }
                Default
                {
                    throw ("The Workflow Manager Client incl CU4 installation failed. " + `
                            "Exit code '$($result.ExitCode)' was returned.")
                }
            }
        }
        elseif ($null -ne ($xmlFile.ChildNodes.entry | Where-Object -FilterScript { $_.productId -eq 'WorkflowClient' }))
        {
            Write-Verbose -Message 'Installing Workflow Manager Client RTM package'

            Write-Verbose -Message 'Install package contains Workflow Manager Client RTM files, installing.....'
            $result = Start-WMInstall -ComponentName 'WorkflowClient' `
                -WebPIPath $WebPIPath `
                -XMLFeedPath $XMLFeedPath

            switch ($result.ExitCode)
            {
                0
                {
                    Write-Verbose -Message "Installation of the Workflow Manager Client RTM succeeded."
                }
                Default
                {
                    throw ("The Workflow Manager Client RTM installation failed. " + `
                            "Exit code '$($result.ExitCode)' was returned.")
                }
            }
        }
        else
        {
            throw 'Install packages does not contain Workflow Manager Client RTM or Client incl CU4 files. Aborting!'
        }
    }

    if ($uncInstall -eq $true)
    {
        Write-Verbose -Message "Removing added path from the Local Intranet Zone"
        Remove-WMDscZoneMap -ServerName $serverName
    }
}

function Test-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Boolean])]
    param
    (
        [parameter(Mandatory = $true)]
        [System.String]
        [ValidateSet("Present", "Absent")]
        $Ensure,

        [parameter(Mandatory = $true)]
        [System.String]
        $WebPIPath,

        [parameter(Mandatory = $true)]
        [System.String]
        $XMLFeedPath,

        [parameter()]
        [System.String]
        [ValidateSet("All", "ClientOnly")]
        $ComponentsToInstall = "All"
    )
    Write-Verbose -Message "Testing for installation of the Workflow Manager"

    if ($Ensure -eq "Absent")
    {
        throw "Uninstallation is not supported by Workflow Manager DSC"
    }

    $result = Get-TargetResource @PSBoundParameters

    return ($result.Ensure -eq $Ensure -and `
            $result.ComponentsToInstall -eq $ComponentsToInstall)
}

Export-ModuleMember -Function *-TargetResource

function Start-WMInstall
{
    param
    (
        [Parameter(Mandatory = $true)]
        [System.String]
        $ComponentName,

        [Parameter(Mandatory = $true)]
        [System.String]
        $WebPIPath,

        [Parameter(Mandatory = $true)]
        [System.String]
        $XMLFeedPath
    )

    $arguments = "/Install /Products:$ComponentName /XML:$XMLFeedPath /AcceptEULA /SuppressPostFinish"
    $installer = Start-Process -FilePath $WebPIPath `
        -ArgumentList $arguments `
        -Wait `
        -NoNewWindow `
        -PassThru
    return $installer
}