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