DSCResources/MSFT_EXOSafeLinksPolicy/MSFT_EXOSafeLinksPolicy.psm1

Confirm-M365DSCModuleDependency -ModuleName 'MSFT_EXOSafeLinksPolicy'

function Get-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Collections.Hashtable])]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.String]
        $Identity,

        [Parameter()]
        [System.String]
        $AdminDisplayName,

        [Parameter()]
        [Boolean]
        $AllowClickThrough,

        [Parameter()]
        [System.String]
        $CustomNotificationText,

        [Parameter()]
        [Boolean]
        $DeliverMessageAfterScan = $false,

        [Parameter()]
        [System.String[]]
        $DoNotRewriteUrls = @(),

        [Parameter()]
        [Boolean]
        $EnableForInternalSenders,

        [Parameter()]
        [Boolean]
        $EnableOrganizationBranding = $false,

        [Parameter()]
        [Boolean]
        $EnableSafeLinksForOffice,

        [Parameter()]
        [Boolean]
        $EnableSafeLinksForTeams = $false,

        [Parameter()]
        [Boolean]
        $EnableSafeLinksForEmail = $false,

        [Parameter()]
        [Boolean]
        $DisableUrlRewrite = $false,

        [Parameter()]
        [Boolean]
        $ScanUrls = $false,

        [Parameter()]
        [Boolean]
        $TrackClicks,

        [Parameter()]
        [Boolean]
        $UseTranslatedNotificationText = $false,

        [Parameter()]
        [ValidateSet('Present', 'Absent')]
        [System.String]
        $Ensure = 'Present',

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $Credential,

        [Parameter()]
        [System.String]
        $ApplicationId,

        [Parameter()]
        [System.String]
        $TenantId,

        [Parameter()]
        [System.String]
        $CertificateThumbprint,

        [Parameter()]
        [System.String]
        $CertificatePath,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $CertificatePassword,

        [Parameter()]
        [Switch]
        $ManagedIdentity,

        [Parameter()]
        [System.String[]]
        $AccessTokens
    )

    Write-Verbose -Message "Getting configuration of SafeLinksPolicy for $Identity"

    try
    {
        if (-not $Script:exportedInstance -or $Script:exportedInstance.Identity -ne $Identity)
        {
            $null = New-M365DSCConnection -Workload 'ExchangeOnline' `
                -InboundParameters $PSBoundParameters

            #Ensure the proper dependencies are installed in the current environment.
            Confirm-M365DSCDependencies

            #region Telemetry
            $ResourceName = $MyInvocation.MyCommand.ModuleName -replace 'MSFT_', ''
            $CommandName = $MyInvocation.MyCommand
            $data = Format-M365DSCTelemetryParameters -ResourceName $ResourceName `
                -CommandName $CommandName `
                -Parameters $PSBoundParameters
            Add-M365DSCTelemetryEvent -Data $data
            #endregion

            $nullReturn = $PSBoundParameters
            $nullReturn.Ensure = 'Absent'

            $SafeLinksPolicy = Get-SafeLinksPolicy -Identity $Identity -ErrorAction SilentlyContinue
            if ($null -eq $SafeLinksPolicy)
            {
                Write-Verbose -Message "SafeLinksPolicy $($Identity) does not exist."
                return $nullReturn
            }
        }
        else
        {
            $SafeLinksPolicy = $Script:exportedInstance
        }

        Write-Verbose -Message "Found existing instance of SafeLinksPolicy $($Identity)"

        $result = @{
            Identity                   = $SafeLinksPolicy.Identity
            AdminDisplayName           = $SafeLinksPolicy.AdminDisplayName
            AllowClickThrough          = $SafeLinksPolicy.AllowClickThrough
            CustomNotificationText     = $SafeLinksPolicy.CustomNotificationText
            DeliverMessageAfterScan    = $SafeLinksPolicy.DeliverMessageAfterScan
            DoNotRewriteUrls           = $SafeLinksPolicy.DoNotRewriteUrls
            EnableForInternalSenders   = $SafeLinksPolicy.EnableForInternalSenders
            EnableOrganizationBranding = $SafeLinksPolicy.EnableOrganizationBranding
            EnableSafeLinksForTeams    = $SafeLinksPolicy.EnableSafeLinksForTeams
            EnableSafeLinksForEmail    = $SafeLinksPolicy.EnableSafeLinksForEmail
            EnableSafeLinksForOffice   = $SafeLinksPolicy.EnableSafeLinksForOffice
            DisableUrlRewrite          = $SafeLinksPolicy.DisableUrlRewrite
            ScanUrls                   = $SafeLinksPolicy.ScanUrls
            TrackClicks                = $SafeLinksPolicy.TrackClicks
            # The Get-SafeLinksPolicy no longer returns this property
            # UseTranslatedNotificationText = $SafeLinksPolicy.UseTranslatedNotificationText
            Ensure                     = 'Present'
            Credential                 = $Credential
            ApplicationId              = $ApplicationId
            CertificateThumbprint      = $CertificateThumbprint
            CertificatePath            = $CertificatePath
            CertificatePassword        = $CertificatePassword
            ManagedIdentity            = $ManagedIdentity.IsPresent
            TenantId                   = $TenantId
            AccessTokens               = $AccessTokens
        }

        Write-Verbose -Message "Found SafeLinksPolicy $($Identity)"
        Write-Verbose -Message "Get-TargetResource Result: `n $(Convert-M365DscHashtableToString -Hashtable $result)"
        return $result
    }
    catch
    {
        New-M365DSCLogEntry -Message 'Error retrieving data:' `
            -Exception $_ `
            -Source $($MyInvocation.MyCommand.Source) `
            -TenantId $TenantId `
            -Credential $Credential

        return $nullReturn
    }
}

function Set-TargetResource
{
    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.String]
        $Identity,

        [Parameter()]
        [System.String]
        $AdminDisplayName,

        [Parameter()]
        [Boolean]
        $AllowClickThrough,

        [Parameter()]
        [System.String]
        $CustomNotificationText,

        [Parameter()]
        [Boolean]
        $DeliverMessageAfterScan = $false,

        [Parameter()]
        [System.String[]]
        $DoNotRewriteUrls = @(),

        [Parameter()]
        [Boolean]
        $EnableForInternalSenders,

        [Parameter()]
        [Boolean]
        $EnableOrganizationBranding = $false,

        [Parameter()]
        [Boolean]
        $EnableSafeLinksForOffice,

        [Parameter()]
        [Boolean]
        $EnableSafeLinksForTeams = $false,

        [Parameter()]
        [Boolean]
        $EnableSafeLinksForEmail = $false,

        [Parameter()]
        [Boolean]
        $DisableUrlRewrite = $false,

        [Parameter()]
        [Boolean]
        $ScanUrls = $false,

        [Parameter()]
        [Boolean]
        $TrackClicks,

        [Parameter()]
        [Boolean]
        $UseTranslatedNotificationText = $false,

        [Parameter()]
        [ValidateSet('Present', 'Absent')]
        [System.String]
        $Ensure = 'Present',

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $Credential,

        [Parameter()]
        [System.String]
        $ApplicationId,

        [Parameter()]
        [System.String]
        $TenantId,

        [Parameter()]
        [System.String]
        $CertificateThumbprint,

        [Parameter()]
        [System.String]
        $CertificatePath,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $CertificatePassword,

        [Parameter()]
        [Switch]
        $ManagedIdentity,

        [Parameter()]
        [System.String[]]
        $AccessTokens
    )

    Write-Verbose -Message "Setting configuration of SafeLinksPolicy for $Identity"
    #Ensure the proper dependencies are installed in the current environment.
    Confirm-M365DSCDependencies

    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName -replace 'MSFT_', ''
    $CommandName = $MyInvocation.MyCommand
    $data = Format-M365DSCTelemetryParameters -ResourceName $ResourceName `
        -CommandName $CommandName `
        -Parameters $PSBoundParameters
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    $null = New-M365DSCConnection -Workload 'ExchangeOnline' `
        -InboundParameters $PSBoundParameters

    $SafeLinksPolicy = Get-SafeLinksPolicy -Identity $Identity -ErrorAction SilentlyContinue
    $SafeLinksPolicyParams = Remove-M365DSCAuthenticationParameter -BoundParameters $PSBoundParameters

    if ('Present' -eq $Ensure -and $null -eq $SafeLinksPolicy)
    {
        $SafeLinksPolicyParams += @{
            Name = $SafeLinksPolicyParams.Identity
        }
        $SafeLinksPolicyParams.Remove('Identity') | Out-Null
        Write-Verbose -Message "Creating SafeLinksPolicy $($Identity)"

        New-SafeLinksPolicy @SafeLinksPolicyParams
    }
    elseif ('Present' -eq $Ensure -and $null -ne $SafeLinksPolicy)
    {
        Write-Verbose -Message "Setting SafeLinksPolicy $($Identity) with values: $(Convert-M365DscHashtableToString -Hashtable $SafeLinksPolicyParams)"

        Set-SafeLinksPolicy @SafeLinksPolicyParams -Confirm:$false
    }
    elseif ('Absent' -eq $Ensure -and $null -ne $SafeLinksPolicy)
    {
        Write-Verbose -Message "Removing SafeLinksPolicy $($Identity) "
        Remove-SafeLinksPolicy -Identity $Identity -Confirm:$false
    }
}

function Test-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Boolean])]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.String]
        $Identity,

        [Parameter()]
        [System.String]
        $AdminDisplayName,

        [Parameter()]
        [Boolean]
        $AllowClickThrough,

        [Parameter()]
        [System.String]
        $CustomNotificationText,

        [Parameter()]
        [Boolean]
        $DeliverMessageAfterScan = $false,

        [Parameter()]
        [System.String[]]
        $DoNotRewriteUrls = @(),

        [Parameter()]
        [Boolean]
        $EnableForInternalSenders,

        [Parameter()]
        [Boolean]
        $EnableOrganizationBranding = $false,

        [Parameter()]
        [Boolean]
        $EnableSafeLinksForOffice,

        [Parameter()]
        [Boolean]
        $EnableSafeLinksForTeams = $false,

        [Parameter()]
        [Boolean]
        $EnableSafeLinksForEmail = $false,

        [Parameter()]
        [Boolean]
        $DisableUrlRewrite = $false,

        [Parameter()]
        [Boolean]
        $ScanUrls = $false,

        [Parameter()]
        [Boolean]
        $TrackClicks,

        [Parameter()]
        [Boolean]
        $UseTranslatedNotificationText = $false,

        [Parameter()]
        [ValidateSet('Present', 'Absent')]
        [System.String]
        $Ensure = 'Present',

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $Credential,

        [Parameter()]
        [System.String]
        $ApplicationId,

        [Parameter()]
        [System.String]
        $TenantId,

        [Parameter()]
        [System.String]
        $CertificateThumbprint,

        [Parameter()]
        [System.String]
        $CertificatePath,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $CertificatePassword,

        [Parameter()]
        [Switch]
        $ManagedIdentity,

        [Parameter()]
        [System.String[]]
        $AccessTokens
    )

    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace('MSFT_', '')
    $CommandName = $MyInvocation.MyCommand
    $data = Format-M365DSCTelemetryParameters -ResourceName $ResourceName `
        -CommandName $CommandName `
        -Parameters $PSBoundParameters
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    $result = Test-M365DSCTargetResource -DesiredValues $PSBoundParameters `
                                         -ResourceName $($MyInvocation.MyCommand.Source).Replace('MSFT_', '') `
                                         -ExcludedProperties @('UseTranslatedNotificationText')
    return $result
}

function Export-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.String])]
    param
    (
        [Parameter()]
        [System.Management.Automation.PSCredential]
        $Credential,

        [Parameter()]
        [System.String]
        $ApplicationId,

        [Parameter()]
        [System.String]
        $TenantId,

        [Parameter()]
        [System.String]
        $CertificateThumbprint,

        [Parameter()]
        [System.String]
        $CertificatePath,

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $CertificatePassword,

        [Parameter()]
        [Switch]
        $ManagedIdentity,

        [Parameter()]
        [System.String[]]
        $AccessTokens
    )

    $ConnectionMode = New-M365DSCConnection -Workload 'ExchangeOnline' `
        -InboundParameters $PSBoundParameters `
        -SkipModuleReload $true

    #Ensure the proper dependencies are installed in the current environment.
    Confirm-M365DSCDependencies

    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName -replace 'MSFT_', ''
    $CommandName = $MyInvocation.MyCommand
    $data = Format-M365DSCTelemetryParameters -ResourceName $ResourceName `
        -CommandName $CommandName `
        -Parameters $PSBoundParameters
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    $dscContent = ''

    try
    {
        if (Confirm-ImportedCmdletIsAvailable -CmdletName Get-SafeLinksPolicy)
        {
            [array]$SafeLinksPolicies = Get-SafeLinksPolicy

            if ($SafeLinksPolicies.Length -eq 0)
            {
                Write-M365DSCHost -Message $Global:M365DSCEmojiGreenCheckMark -CommitWrite
            }
            else
            {
                Write-M365DSCHost -Message "`r`n" -DeferWrite
            }
            $i = 1
            foreach ($SafeLinksPolicy in $SafeLinksPolicies)
            {
                if ($null -ne $Global:M365DSCExportResourceInstancesCount)
                {
                    $Global:M365DSCExportResourceInstancesCount++
                }

                Write-M365DSCHost -Message " |---[$i/$($SafeLinksPolicies.Length)] $($SafeLinksPolicy.Name)" -DeferWrite
                $Params = @{
                    Credential            = $Credential
                    Identity              = $SafeLinksPolicy.Identity
                    ApplicationId         = $ApplicationId
                    TenantId              = $TenantId
                    CertificateThumbprint = $CertificateThumbprint
                    CertificatePassword   = $CertificatePassword
                    ManagedIdentity       = $ManagedIdentity.IsPresent
                    CertificatePath       = $CertificatePath
                    AccessTokens          = $AccessTokens
                }
                $Script:exportedInstance = $SafeLinksPolicy
                $Results = Get-TargetResource @Params
                $currentDSCBlock = Get-M365DSCExportContentForResource -ResourceName $ResourceName `
                    -ConnectionMode $ConnectionMode `
                    -ModulePath $PSScriptRoot `
                    -Results $Results `
                    -Credential $Credential
                $dscContent += $currentDSCBlock
                Save-M365DSCPartialExport -Content $currentDSCBlock `
                    -FileName $Global:PartialExportFileName
                Write-M365DSCHost -Message $Global:M365DSCEmojiGreenCheckMark -CommitWrite
                $i++
            }
        }
        else
        {
            Write-M365DSCHost -Message "`r`n $($Global:M365DSCEmojiYellowCircle)The current tenant is not registered to allow for Safe Attachment Rules."
        }
        return $dscContent
    }
    catch
    {
        Write-M365DSCHost -Message $Global:M365DSCEmojiRedX -CommitWrite

        New-M365DSCLogEntry -Message 'Error during Export:' `
            -Exception $_ `
            -Source $($MyInvocation.MyCommand.Source) `
            -TenantId $TenantId `
            -Credential $Credential

        return ''
    }
}

Export-ModuleMember -Function *-TargetResource