DSCResources/MSFT_SPSearchCrawlRule/MSFT_SPSearchCrawlRule.psm1

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

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

        [Parameter()]
        [ValidateSet("DefaultRuleAccess",
            "BasicAccountRuleAccess",
            "CertificateRuleAccess",
            "NTLMAccountRuleAccess",
            "FormRuleAccess",
            "CookieRuleAccess",
            "AnonymousAccess")]
        [System.String]
        $AuthenticationType,

        [Parameter()]
        [ValidateSet("InclusionRule", "ExclusionRule")]
        [System.String]
        $RuleType,

        [Parameter()]
        [ValidateSet("FollowLinksNoPageCrawl",
            "CrawlComplexUrls",
            "CrawlAsHTTP")]
        [System.String[]]
        $CrawlConfigurationRules,

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

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

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

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $InstallAccount
    )

    Write-Verbose -Message "Getting Search Crawl Rule '$Path'"

    # AuthenticationType=CertificateName and CertificateRuleAccess parameters not specified
    if ($AuthenticationType -eq "CertificateRuleAccess" -and -not $CertificateName)
    {
        throw ("When AuthenticationType=CertificateRuleAccess, the parameter " + `
                "CertificateName is required")
    }

    # AuthenticationType=CertificateName and CertificateRuleAccess parameters not
    # specified correctly
    if ($AuthenticationType -ne "CertificateRuleAccess" -and $CertificateName)
    {
        throw "When specifying CertificateName, the AuthenticationType parameter is required"
    }

    # AuthenticationType=NTLMAccountRuleAccess and AuthenticationCredentialsparameters
    # not specified
    if (($AuthenticationType -eq "NTLMAccountRuleAccess" `
                -or $AuthenticationType -eq "BasicAccountRuleAccess") `
            -and -not $AuthenticationCredentials)
    {
        throw ("When AuthenticationType is NTLMAccountRuleAccess or BasicAccountRuleAccess, " + `
                "the parameter AuthenticationCredentials is required")
    }

    # AuthenticationCredentials parameters, but AuthenticationType is not NTLMAccountRuleAccess
    # or BasicAccountRuleAccess
    if ($AuthenticationCredentials `
            -and $AuthenticationType -ne "NTLMAccountRuleAccess" `
            -and $AuthenticationType -ne "BasicAccountRuleAccess")
    {
        throw ("When specifying AuthenticationCredentials, the AuthenticationType " + `
                "parameter is required")
    }

    # ExclusionRule only with CrawlConfigurationRules=CrawlComplexUrls
    if ($RuleType -eq "ExclusionRule" `
            -and ($CrawlConfigurationRules -contains "CrawlAsHTTP" `
                -or $CrawlConfigurationRules -contains "FollowLinksNoPageCrawl"))
    {
        throw ("When RuleType=ExclusionRule, CrawlConfigurationRules cannot contain " + `
                "the values FollowLinksNoPageCrawl or CrawlAsHTTP")
    }

    # ExclusionRule cannot be used with AuthenticationCredentials, CertificateName or
    # AuthenticationType parameters
    if ($RuleType -eq "ExclusionRule" `
            -and ($AuthenticationCredentials -or $CertificateName -or $AuthenticationType))
    {
        throw ("When Type=ExclusionRule, parameters AuthenticationCredentials, " + `
                "CertificateName or AuthenticationType are not allowed")
    }

    $result = Invoke-SPDscCommand -Credential $InstallAccount `
        -Arguments $PSBoundParameters `
        -ScriptBlock {
        $params = $args[0]

        $serviceApps = Get-SPServiceApplication -Name $params.ServiceAppName `
            -ErrorAction SilentlyContinue

        $nullReturn = @{
            Path           = $params.Path
            ServiceAppName = $params.ServiceAppName
            Ensure         = "Absent"
            InstallAccount = $params.InstallAccount
        }

        if ($null -eq $serviceApps)
        {
            Write-Verbose -Message "Service Application $($params.ServiceAppName) not found"
            return $nullReturn
        }

        $serviceApp = $serviceApps | Where-Object -FilterScript {
            $_.GetType().FullName -eq "Microsoft.Office.Server.Search.Administration.SearchServiceApplication"
        }

        if ($null -eq $serviceApp)
        {
            Write-Verbose -Message "Service Application $($params.ServiceAppName) not found"
            return $nullReturn
        }
        else
        {
            $crawlRule = Get-SPEnterpriseSearchCrawlRule `
                -SearchApplication $params.ServiceAppName | Where-Object -FilterScript {
                $_.Path -eq $params.Path
            }

            if ($null -eq $crawlRule)
            {
                Write-Verbose -Message "Crawl rule $($params.Path) not found"
                return $nullReturn
            }
            else
            {
                $crawlConfigurationRules = @()
                if ($crawlRule.SuppressIndexing)
                {
                    $crawlConfigurationRules += "FollowLinksNoPageCrawl"
                }
                if ($crawlRule.FollowComplexUrls)
                {
                    $crawlConfigurationRules += "CrawlComplexUrls"
                }
                if ($crawlRule.CrawlAsHttp)
                {
                    $crawlConfigurationRules += "CrawlAsHTTP"
                }

                switch ($crawlRule.AuthenticationType)
                {
                    { @("BasicAccountRuleAccess",
                            "NTLMAccountRuleAccess") -contains $_ }
                    {
                        $returnVal = @{
                            Path                      = $params.Path
                            ServiceAppName            = $params.ServiceAppName
                            AuthenticationType        = $crawlRule.AuthenticationType
                            RuleType                  = $crawlRule.Type.ToString()
                            CrawlConfigurationRules   = $crawlConfigurationRules
                            AuthenticationCredentials = $crawlRule.AccountName
                            Ensure                    = "Present"
                            InstallAccount            = $params.InstallAccount
                        }
                    }
                    "CertificateRuleAccess"
                    {
                        $returnVal = @{
                            Path                    = $params.Path
                            ServiceAppName          = $params.ServiceAppName
                            AuthenticationType      = $crawlRule.AuthenticationType
                            RuleType                = $crawlRule.Type.ToString()
                            CrawlConfigurationRules = $crawlConfigurationRules
                            CertificateName         = $crawlRule.AccountName
                            Ensure                  = "Present"
                            InstallAccount          = $params.InstallAccount
                        }
                    }
                    { @("DefaultRuleAccess",
                            "FormRuleAccess",
                            "CookieRuleAccess",
                            "AnonymousAccess") -contains $_ }
                    {
                        $returnVal = @{
                            Path                    = $params.Path
                            ServiceAppName          = $params.ServiceAppName
                            AuthenticationType      = $crawlRule.AuthenticationType.ToString()
                            RuleType                = $crawlRule.Type.ToString()
                            CrawlConfigurationRules = $crawlConfigurationRules
                            Ensure                  = "Present"
                            InstallAccount          = $params.InstallAccount
                        }
                    }
                    default
                    {
                        Path                    = $params.Path
                        ServiceAppName          = $params.ServiceAppName
                        AuthenticationType      = "Unknown"
                        RuleType                = $crawlRule.Type.ToString()
                        CrawlConfigurationRules = $crawlConfigurationRules
                        Ensure                  = "Present"
                        InstallAccount          = $params.InstallAccount
                    }
                }
                return $returnVal
            }
        }
    }
    return $result
}

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

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

        [Parameter()]
        [ValidateSet("DefaultRuleAccess",
            "BasicAccountRuleAccess",
            "CertificateRuleAccess",
            "NTLMAccountRuleAccess",
            "FormRuleAccess",
            "CookieRuleAccess",
            "AnonymousAccess")]
        [System.String]
        $AuthenticationType,

        [Parameter()]
        [ValidateSet("InclusionRule", "ExclusionRule")]
        [System.String]
        $RuleType,

        [Parameter()]
        [ValidateSet("FollowLinksNoPageCrawl",
            "CrawlComplexUrls",
            "CrawlAsHTTP")]
        [System.String[]]
        $CrawlConfigurationRules,

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

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

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

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $InstallAccount
    )

    Write-Verbose -Message "Setting Search Crawl Rule '$Path'"

    $result = Get-TargetResource @PSBoundParameters

    # AuthenticationType=CertificateName and CertificateRuleAccess parameters not specified
    if ($AuthenticationType -eq "CertificateRuleAccess" -and -not $CertificateName)
    {
        throw ("When AuthenticationType=CertificateRuleAccess, the parameter " + `
                "CertificateName is required")
    }

    # AuthenticationType=CertificateName and CertificateRuleAccess parameters not
    # specified correctly
    if ($AuthenticationType -ne "CertificateRuleAccess" -and $CertificateName)
    {
        throw "When specifying CertificateName, the AuthenticationType parameter is required"
    }

    # AuthenticationType=NTLMAccountRuleAccess and AuthenticationCredentialsparameters
    # not specified
    if (($AuthenticationType -eq "NTLMAccountRuleAccess" `
                -or $AuthenticationType -eq "BasicAccountRuleAccess") `
            -and -not $AuthenticationCredentials)
    {
        throw ("When AuthenticationType is NTLMAccountRuleAccess or BasicAccountRuleAccess, " + `
                "the parameter AuthenticationCredentials is required")
    }

    # AuthenticationCredentials parameters, but AuthenticationType is not NTLMAccountRuleAccess
    # or BasicAccountRuleAccess
    if ($AuthenticationCredentials `
            -and $AuthenticationType -ne "NTLMAccountRuleAccess" `
            -and $AuthenticationType -ne "BasicAccountRuleAccess")
    {
        throw ("When specifying AuthenticationCredentials, the AuthenticationType " + `
                "parameter is required")
    }

    # ExclusionRule only with CrawlConfigurationRules=CrawlComplexUrls
    if ($RuleType -eq "ExclusionRule" `
            -and ($CrawlConfigurationRules -contains "CrawlAsHTTP" `
                -or $CrawlConfigurationRules -contains "FollowLinksNoPageCrawl"))
    {
        throw ("When RuleType=ExclusionRule, CrawlConfigurationRules cannot contain " + `
                "the values FollowLinksNoPageCrawl or CrawlAsHTTP")
    }

    # ExclusionRule cannot be used with AuthenticationCredentials, CertificateName or
    # AuthenticationType parameters
    if ($RuleType -eq "ExclusionRule" `
            -and ($AuthenticationCredentials -or $CertificateName -or $AuthenticationType))
    {
        throw ("When Type=ExclusionRule, parameters AuthenticationCredentials, " + `
                "CertificateName or AuthenticationType are not allowed")
    }

    if ($result.Ensure -eq "Absent" -and $Ensure -eq "Present")
    {
        Write-Verbose -Message "Creating Crawl Rule $Path"
        Invoke-SPDscCommand -Credential $InstallAccount `
            -Arguments $PSBoundParameters `
            -ScriptBlock {
            $params = $args[0]

            $newParams = @{
                Path              = $params.Path
                SearchApplication = $params.ServiceAppName
            }
            if ($params.ContainsKey("AuthenticationType") -eq $true)
            {
                $newParams.Add("AuthenticationType", $params.AuthenticationType)
            }
            if ($params.ContainsKey("RuleType") -eq $true)
            {
                $newParams.Add("Type", $params.RuleType)
            }
            if ($params.ContainsKey("CrawlConfigurationRules") -eq $true)
            {
                if ($params.CrawlConfigurationRules -contains "FollowLinksNoPageCrawl")
                {
                    $newParams.Add("SuppressIndexing", 1)
                }
                if ($params.CrawlConfigurationRules -contains "CrawlComplexUrls")
                {
                    $newParams.Add("FollowComplexUrls", 1)
                }
                if ($params.CrawlConfigurationRules -contains "CrawlAsHTTP")
                {
                    $newParams.Add("CrawlAsHttp", 1)
                }
            }
            if ($params.ContainsKey("AuthenticationCredentials") -eq $true)
            {
                $newParams.Add("AccountName", $params.AuthenticationCredentials.UserName)
                $newParams.Add("AccountPassword", $params.AuthenticationCredentials.Password)
            }
            if ($params.ContainsKey("CertificateName") -eq $true)
            {
                $newParams.Add("CertificateName", $params.CertificateName)
            }

            New-SPEnterpriseSearchCrawlRule @newParams
        }
    }
    if ($result.Ensure -eq "Present" -and $Ensure -eq "Present")
    {
        Write-Verbose -Message "Updating Crawl Rule $Path"
        Invoke-SPDscCommand -Credential $InstallAccount -Arguments $PSBoundParameters -ScriptBlock {
            $params = $args[0]

            $crawlRule = Get-SPEnterpriseSearchCrawlRule `
                -SearchApplication $params.ServiceAppName | Where-Object -FilterScript {
                $_.Path -eq $params.Path
            }

            if ($null -ne $crawlRule)
            {
                $setParams = @{
                    Identity          = $params.Path
                    SearchApplication = $params.ServiceAppName
                }
                if ($params.ContainsKey("AuthenticationType") -eq $true)
                {
                    $setParams.Add("AuthenticationType", $params.AuthenticationType)
                }
                if ($params.ContainsKey("RuleType") -eq $true)
                {
                    $setParams.Add("Type", $params.RuleType)
                }
                if ($params.ContainsKey("CrawlConfigurationRules") -eq $true)
                {
                    if ($params.CrawlConfigurationRules -contains "FollowLinksNoPageCrawl")
                    {
                        $setParams.Add("SuppressIndexing", 1)
                    }
                    if ($params.CrawlConfigurationRules -contains "CrawlComplexUrls")
                    {
                        $setParams.Add("FollowComplexUrls", 1)
                    }
                    if ($params.CrawlConfigurationRules -contains "CrawlAsHTTP")
                    {
                        $setParams.Add("CrawlAsHttp", 1)
                    }
                }
                if ($params.ContainsKey("AuthenticationCredentials") -eq $true)
                {
                    $setParams.Add("AccountName", $params.AuthenticationCredentials.UserName)
                    $setParams.Add("AccountPassword", $params.AuthenticationCredentials.Password)
                }
                if ($params.ContainsKey("CertificateName") -eq $true)
                {
                    $setParams.Add("AccountName", $params.CertificateName)
                }
                Set-SPEnterpriseSearchCrawlRule @setParams
            }
        }
    }

    if ($Ensure -eq "Absent")
    {
        Write-Verbose -Message "Removing Crawl Rule $Path"
        Invoke-SPDscCommand -Credential $InstallAccount `
            -Arguments $PSBoundParameters `
            -ScriptBlock {
            $params = $args[0]

            Remove-SPEnterpriseSearchCrawlRule -SearchApplication $params.ServiceAppName `
                -Identity $params.Path `
                -Confirm:$false
        }
    }
}

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

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

        [Parameter()]
        [ValidateSet("DefaultRuleAccess",
            "BasicAccountRuleAccess",
            "CertificateRuleAccess",
            "NTLMAccountRuleAccess",
            "FormRuleAccess",
            "CookieRuleAccess",
            "AnonymousAccess")]
        [System.String]
        $AuthenticationType,

        [Parameter()]
        [ValidateSet("InclusionRule", "ExclusionRule")]
        [System.String]
        $RuleType,

        [Parameter()]
        [ValidateSet("FollowLinksNoPageCrawl",
            "CrawlComplexUrls",
            "CrawlAsHTTP")]
        [System.String[]]
        $CrawlConfigurationRules,

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

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

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

        [Parameter()]
        [System.Management.Automation.PSCredential]
        $InstallAccount
    )

    Write-Verbose -Message "Testing Search Crawl Rule '$Path'"

    $PSBoundParameters.Ensure = $Ensure

    $CurrentValues = Get-TargetResource @PSBoundParameters

    Write-Verbose -Message "Current Values: $(Convert-SPDscHashtableToString -Hashtable $CurrentValues)"
    Write-Verbose -Message "Target Values: $(Convert-SPDscHashtableToString -Hashtable $PSBoundParameters)"

    if ($Ensure -eq "Present")
    {
        if ($CrawlConfigurationRules)
        {
            if ($CurrentValues.ContainsKey("CrawlConfigurationRules"))
            {
                $compareObject = Compare-Object `
                    -ReferenceObject $CrawlConfigurationRules `
                    -DifferenceObject $CurrentValues.CrawlConfigurationRules
                if ($null -ne $compareObject)
                {
                    return $false
                }
            }
            else
            {
                return $false
            }
        }

        if ($CurrentValues.ContainsKey("AuthenticationCredentials") -and $AuthenticationCredentials)
        {
            if ($AuthenticationCredentials.UserName -ne $CurrentValues.AuthenticationCredentials)
            {
                return $false
            }
        }

        return Test-SPDscParameterState -CurrentValues $CurrentValues `
            -DesiredValues $PSBoundParameters `
            -ValuesToCheck @("Ensure",
            "AuthenticationType",
            "RuleType",
            "CertificateName")
    }
    else
    {
        return Test-SPDscParameterState -CurrentValues $CurrentValues `
            -DesiredValues $PSBoundParameters `
            -ValuesToCheck @("Ensure")
    }
}

Export-ModuleMember -Function *-TargetResource