tests/Test-ExternalSharingCalendars.ps1
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function Test-ExternalSharingCalendars { [CmdletBinding()] [OutputType([CISAuditResult])] param ( # Aligned # Parameters can be added if needed ) begin { # Dot source the class script if necessary #. .\source\Classes\CISAuditResult.ps1 # Initialization code, if needed $recnum = "1.3.3" Write-Verbose "Running Test-ExternalSharingCalendars for $recnum..." # Conditions for 1.3.3 (L2) Ensure 'External sharing' of calendars is not available (Automated) # # Validate test for a pass: # - Confirm that the automated test results align with the manual audit steps outlined in the CIS benchmark. # - Specific conditions to check: # - Condition A: In the Microsoft 365 admin center, external calendar sharing is disabled. # - Condition B: Using the Exchange Online PowerShell Module, the `OrganizationConfig` property `ExternalSharingEnabled` is set to `False`. # # Validate test for a fail: # - Confirm that the failure conditions in the automated test are consistent with the manual audit results. # - Specific conditions to check: # - Condition A: In the Microsoft 365 admin center, external calendar sharing is enabled. # - Condition B: Using the Exchange Online PowerShell Module, the `OrganizationConfig` property `ExternalSharingEnabled` is set to `True`. } process { try { # Step: Retrieve sharing policies related to calendar sharing # $sharingPolicies Mock Object <# $sharingPolicies = [PSCustomObject]@{ Name = "Default Sharing Policy" Domains = @("Anonymous:CalendarSharingFreeBusySimple") Enabled = $true Default = $true } #> $sharingPolicies = Get-CISExoOutput -Rec $recnum # Step (Condition A & B: Pass/Fail): Check if calendar sharing is disabled in all applicable policies $isExternalSharingDisabled = $true $sharingPolicyDetails = @() foreach ($policy in $sharingPolicies) { if ($policy.Enabled -eq $true) { $isExternalSharingDisabled = $false $sharingPolicyDetails += "$($policy.Name): Enabled" } } # Retrieve calendars with publishing enabled (from 1.3.3b) # $calendarDetails Mock Object <# $calendarDetails = @( [PSCustomObject]@{ Calendar = "SMBuser1@domain.com" URL = "https://example.com/calendar/smbuser1" }, [PSCustomObject]@{ Calendar = "SMBuser2@domain.com" URL = "https://example.com/calendar/smbuser2" }, [PSCustomObject]@{ Calendar = "SMBuser4@domain.com" URL = "https://example.com/calendar/smbuser3" } ) #> $calendarDetails = Get-CISExoOutput -Rec "$("$recnum" + "b")" # Build the failure reason string $failureReasons = if (-not $isExternalSharingDisabled) { $baseMessage = "Calendar sharing with external users is enabled in one or more policies." if ($calendarDetails.Count -gt 0) { $baseMessage += "`nPrior to remediating, check the following mailboxes that have calendar publishing enabled: `n$($calendarDetails -join '`n')" } $baseMessage } else { "N/A" } # Step: Prepare details for the audit result (Condition A & B: Pass/Fail) $details = if ($isExternalSharingDisabled) { "Calendar sharing with external users is disabled." } else { "Enabled Sharing Policies:`n$($sharingPolicyDetails -join ', ')" } # Step: Create and populate the CISAuditResult object $params = @{ Rec = $recnum Result = $isExternalSharingDisabled Status = if ($isExternalSharingDisabled) { "Pass" } else { "Fail" } Details = $details FailureReason = $failureReasons } $auditResult = Initialize-CISAuditResult @params } catch { $LastError = $_ $auditResult = Get-TestError -LastError $LastError -recnum $recnum } } end { # Return the audit result return $auditResult } } |