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M365FoundationsCISReport/source/tests/Test-LinkSharingRestrictions.ps1

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3.7 KiB
PowerShell

function Test-LinkSharingRestrictions {
[CmdletBinding()]
[OutputType([CISAuditResult])]
param (
# Aligned
# Define your parameters here
# Test behavior in prod
)
begin {
# Dot source the class script if necessary
#. .\source\Classes\CISAuditResult.ps1
# Initialization code, if needed
$recnum = "7.2.7"
}
process {
try {
# 7.2.7 (L1) Ensure link sharing is restricted in SharePoint and OneDrive
#
# 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: The `DefaultSharingLinkType` setting in SharePoint and OneDrive is set to `Direct`.
# - Condition B: The setting `Choose the type of link that's selected by default when users share files and folders in SharePoint and OneDrive` is set to `Specific people (only the people the user specifies)`.
# - Condition C: Verification using the UI confirms that the link sharing settings are configured as recommended.
#
# 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: The `DefaultSharingLinkType` setting in SharePoint and OneDrive is not set to `Direct`.
# - Condition B: The setting `Choose the type of link that's selected by default when users share files and folders in SharePoint and OneDrive` is not set to `Specific people (only the people the user specifies)`.
# - Condition C: Verification using the UI indicates that the link sharing settings are not configured as recommended.
# Retrieve link sharing configuration for SharePoint and OneDrive
$SPOTenantLinkSharing = Get-CISSpoOutput -Rec $recnum
$isLinkSharingRestricted = $SPOTenantLinkSharing.DefaultSharingLinkType -eq 'Direct' # Or 'SpecificPeople' as per the recommendation
# Prepare failure reasons and details based on compliance
$failureReasons = if (-not $isLinkSharingRestricted) {
"Link sharing is not restricted to 'Specific people'. Current setting: $($SPOTenantLinkSharing.DefaultSharingLinkType)"
}
else {
"N/A"
}
$details = "DefaultSharingLinkType: $($SPOTenantLinkSharing.DefaultSharingLinkType)"
# Create and populate the CISAuditResult object
$params = @{
Rec = $recnum
Result = $isLinkSharingRestricted
Status = if ($isLinkSharingRestricted) { "Pass" } else { "Fail" }
Details = $details
FailureReason = $failureReasons
}
$auditResult = Initialize-CISAuditResult @params
}
catch {
Write-Error "An error occurred during the test: $_"
# Retrieve the description from the test definitions
$testDefinition = $script:TestDefinitionsObject | Where-Object { $_.Rec -eq $recnum }
$description = if ($testDefinition) { $testDefinition.RecDescription } else { "Description not found" }
$script:FailedTests.Add([PSCustomObject]@{ Rec = $recnum; Description = $description; Error = $_ })
# Call Initialize-CISAuditResult with error parameters
$auditResult = Initialize-CISAuditResult -Rec $recnum -Failure
}
}
end {
# Return the audit result
return $auditResult
}
}