You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 

546 lines
34 KiB

<#
Closes the parameter-set gaps that the judged test matrix (judged-audit.csv / judged-audit-notes.md) found for
the audit cmdlets: pipeline binding by value and by property name, continuation past a failing path or
descriptor, and state or output assertions beyond -PassThru, with the module built in NTFSSecurity\bin\Release
on files in a sandbox folder. Reading and changing audit entries needs the Security privilege; tests that need
it skip without it and run in CI, whose runners are elevated, like Audit.Tests.ps1. The -SecurityDescriptor sets
of Add-NTFSAudit and Remove-NTFSAudit have no per-item handler around the change itself (an open maintainer
item), so no test here pins what happens when that change throws for one of several descriptors; the only
failure the -SecurityDescriptor scenarios below exercise is the already-handled one of a descriptor that was
read without its audit section.
#>
[Diagnostics.CodeAnalysis.SuppressMessageAttribute(
'PSUseDeclaredVarsMoreThanAssignments', '', Justification = 'Pester shares variables between blocks.'
)]
param ()
BeforeDiscovery {
Import-Module -Name (Join-Path -Path $PSScriptRoot -ChildPath 'TestHelpers.psm1') -Force
$canReadAudit = Test-PrivilegeHeld -Name 'SeSecurityPrivilege'
}
BeforeAll {
Import-Module -Name (Join-Path -Path $PSScriptRoot -ChildPath 'TestHelpers.psm1') -Force
$modulePath = Join-Path -Path $PSScriptRoot -ChildPath '..\NTFSSecurity\bin\Release\NTFSSecurity.psd1'
Import-Module -Name $modulePath -Force -ErrorAction Stop
$sandbox = New-TestSandbox -Name 'ParameterSetsAudit'
Push-Location -LiteralPath $sandbox
$sidType = [System.Security.Principal.SecurityIdentifier]
$probe = 'S-1-1-0'
$keeper = 'S-1-5-32-545'
$entry = @{ Account = $probe; AccessRights = 'ReadData' }
function Get-TestAuditSddl {
param ([Parameter(Mandatory)] [string] $Path)
(Get-Acl -LiteralPath $Path -Audit).GetSecurityDescriptorSddlForm('Audit')
}
function Get-TestDaclSddl {
param ([Parameter(Mandatory)] [string] $Path)
(Get-Acl -LiteralPath $Path).Sddl
}
function Get-TestAuditAcl {
# The SACL read alone, through .NET. Get-Acl -Audit reads it together with the other sections, and on a domain
# member that reports the SACL of an item without audit entries as protected from inheritance, which is not its
# state (see Security2\FileSystem\FileSystemSecurity2.cs). Matches the helper of ParameterSets.Inheritance.Tests.ps1.
param ([Parameter(Mandatory)] [string] $Path)
$sections = [System.Security.AccessControl.AccessControlSections]::Audit
$info = if (Test-Path -LiteralPath $Path -PathType Container) {
New-Object -TypeName 'System.IO.DirectoryInfo' -ArgumentList $Path
}
else {
New-Object -TypeName 'System.IO.FileInfo' -ArgumentList $Path
}
if ($PSVersionTable.PSEdition -eq 'Desktop') {
$info.GetAccessControl($sections)
}
else {
[System.IO.FileSystemAclExtensions]::GetAccessControl($info, $sections)
}
}
function Get-TestAccessOnlyDescriptor {
# A descriptor read with the Access section only, like one that Get-NTFSSecurityDescriptor returns without
# the Security privilege: the audit cmdlets have nothing to read or change and report it the same way.
param ([Parameter(Mandatory)] [string] $Path)
New-Object -TypeName 'Security2.FileSystemSecurity2' -ArgumentList (
(Get-Item2 -Path $Path), [System.Security.AccessControl.AccessControlSections]::Access
)
}
function Get-TestAccountAuditRule {
param (
[Parameter(Mandatory)] [System.Security.AccessControl.FileSystemSecurity] $Acl,
[Parameter(Mandatory)] [string] $Account
)
@($Acl.GetAuditRules($true, $false, $sidType) | Where-Object -FilterScript { $_.IdentityReference.Value -eq $Account })
}
}
AfterAll {
Pop-Location
Remove-TestSandbox -Sandbox $sandbox
Remove-Module -Name NTFSSecurity -Force -ErrorAction SilentlyContinue
}
Describe 'Audit cmdlets with a security descriptor that has no audit section' {
# TestAuditSection (#109) handles this the same way for every cmdlet that takes -SecurityDescriptor: Audit.Tests.ps1
# line 425 already asserts the ErrorId for Add-NTFSAudit, Remove-NTFSAudit, and Clear-NTFSAudit; this data set adds
# the category and the target, which must be the descriptor itself, not its path, and also covers Get-NTFSAudit and
# Get-NTFSOrphanedAudit and the Simple parameter sets of Add and Remove. None of this needs the Security privilege:
# the descriptor already carries no audit section before the cmdlet runs.
It '<Command> should write a ReadSecurityError with category InvalidData and the descriptor as target for the <Set> set, and change nothing' -ForEach @(
@{ Command = 'Add-NTFSAudit'; Set = 'SDSimple'; Parameters = @{ Account = 'S-1-1-0'; AccessRights = 'ReadData'; AppliesTo = 'ThisFolderOnly'; PassThru = $true } }
@{ Command = 'Add-NTFSAudit'; Set = 'SDComplex'; Parameters = @{ Account = 'S-1-1-0'; AccessRights = 'ReadData'; PassThru = $true } }
@{ Command = 'Remove-NTFSAudit'; Set = 'SDSimple'; Parameters = @{ Account = 'S-1-1-0'; AccessRights = 'ReadData'; AppliesTo = 'ThisFolderOnly'; PassThru = $true } }
@{ Command = 'Remove-NTFSAudit'; Set = 'SDComplex'; Parameters = @{ Account = 'S-1-1-0'; AccessRights = 'ReadData'; PassThru = $true } }
@{ Command = 'Clear-NTFSAudit'; Set = 'SD'; Parameters = @{} }
@{ Command = 'Get-NTFSAudit'; Set = 'SD'; Parameters = @{} }
@{ Command = 'Get-NTFSOrphanedAudit'; Set = 'SD'; Parameters = @{} }
) {
$file = New-TestSandboxItem -Sandbox $sandbox -Name 'NoAuditSection'
$sd = Get-TestAccessOnlyDescriptor -Path $file
$result = @(& $Command -SecurityDescriptor $sd @Parameters -ErrorVariable auditErrors -ErrorAction SilentlyContinue)
$result | Should -BeNullOrEmpty
$auditErrors | Should -HaveCount 1
$auditErrors[0].FullyQualifiedErrorId | Should -BeLike 'ReadSecurityError,*'
$auditErrors[0].CategoryInfo.Category | Should -Be 'InvalidData'
$auditErrors[0].TargetObject | Should -Be $sd
$sd.SecurityDescriptor.GetSecurityDescriptorSddlForm('Audit') | Should -BeNullOrEmpty
}
}
Describe 'Add-NTFSAudit' {
Context 'Binding -Path from the pipeline by property name' {
# -AppliesTo is named for the Simple row, not piped: an object with an AppliesTo property binds the default set
# PathComplex and the property is dropped (the folders show it: the scope of the entry stays the default one), so
# only the named parameter selects PathSimple.
It 'Should add the audit entry for the piped <Set> object that exists, write a ReadFileError for the one that does not, and leave the DACL unchanged' -ForEach @(
@{ Set = 'PathComplex'; ExtraProperties = @{ InheritanceFlags = 'None'; PropagationFlags = 'None' }; Named = @{} }
@{ Set = 'PathSimple'; ExtraProperties = @{}; Named = @{ AppliesTo = 'ThisFolderOnly' } }
) -Skip:(-not $canReadAudit) {
$missing = Join-Path -Path $sandbox -ChildPath ('AddPipeMissing-{0}' -f [guid]::NewGuid().ToString('N'))
Assert-TestSandboxPath -Sandbox $sandbox -Path $missing
$good = New-TestSandboxItem -Sandbox $sandbox -Name "AddPipeGood$Set" -Directory
$daclBefore = Get-TestDaclSddl -Path $good
$items = @(
[pscustomobject] (@{ FullName = $missing; Account = $probe; AccessRights = 'ReadData' } + $ExtraProperties)
[pscustomobject] (@{ FullName = $good; Account = $probe; AccessRights = 'ReadData' } + $ExtraProperties)
)
$result = @($items | Add-NTFSAudit @Named -PassThru -ErrorVariable auditErrors -ErrorAction SilentlyContinue)
$auditErrors | Should -HaveCount 1
$auditErrors[0].FullyQualifiedErrorId | Should -BeLike 'ReadFileError,*'
$auditErrors[0].CategoryInfo.Category | Should -Be 'OpenError'
$auditErrors[0].TargetObject | Should -Be $missing
$result | Should -HaveCount 1
$result[0].FullName | Should -Be $good
# The default scope of a new entry is ContainerInherit and ObjectInherit; None shows that the scope was honored
$rule = Get-TestAccountAuditRule -Acl (Get-Acl -LiteralPath $good -Audit) -Account $probe
$rule | Should -HaveCount 1
$rule[0].InheritanceFlags | Should -Be ([System.Security.AccessControl.InheritanceFlags]::None)
Get-TestDaclSddl -Path $good | Should -BeExactly $daclBefore
}
}
Context 'Binding -SecurityDescriptor from the pipeline by property name' {
It 'Should add the audit entry for the piped <Set> object that has an audit section, write a ReadSecurityError for the one that does not, and leave the item on disk unchanged until Set-NTFSSecurityDescriptor writes it' -ForEach @(
@{ Set = 'SDSimple'; ExtraProperties = @{ AppliesTo = 'ThisFolderOnly' } }
@{ Set = 'SDComplex'; ExtraProperties = @{ InheritanceFlags = 'None'; PropagationFlags = 'None' } }
) -Skip:(-not $canReadAudit) {
$badFile = New-TestSandboxItem -Sandbox $sandbox -Name "AddPipeSDBad$Set"
$sdBad = Get-TestAccessOnlyDescriptor -Path $badFile
# A folder, so that the scope of the entry is observable; for a descriptor the piped AppliesTo property does bind
# SDSimple (no default set competes: Path is not on the object), unlike for a path
$goodFile = New-TestSandboxItem -Sandbox $sandbox -Name "AddPipeSDGood$Set" -Directory
$auditBefore = Get-TestAuditSddl -Path $goodFile
$daclBefore = Get-TestDaclSddl -Path $goodFile
$sdGood = Get-NTFSSecurityDescriptor -Path $goodFile -ErrorAction Stop
$items = @(
[pscustomobject] (@{ SecurityDescriptor = $sdBad; Account = $probe; AccessRights = 'ReadData' } + $ExtraProperties)
[pscustomobject] (@{ SecurityDescriptor = $sdGood; Account = $probe; AccessRights = 'ReadData' } + $ExtraProperties)
)
$result = @($items | Add-NTFSAudit -PassThru -ErrorVariable auditErrors -ErrorAction SilentlyContinue)
$auditErrors | Should -HaveCount 1
$auditErrors[0].FullyQualifiedErrorId | Should -BeLike 'ReadSecurityError,*'
$auditErrors[0].TargetObject | Should -Be $sdBad
$result | Should -HaveCount 1
$result[0].FullName | Should -Be $goodFile
$rule = Get-TestAccountAuditRule -Acl $sdGood.SecurityDescriptor -Account $probe
$rule | Should -HaveCount 1
$rule[0].InheritanceFlags | Should -Be ([System.Security.AccessControl.InheritanceFlags]::None)
Get-TestAuditSddl -Path $goodFile | Should -BeExactly $auditBefore
Set-NTFSSecurityDescriptor -SecurityDescriptor $sdGood -ErrorAction Stop
(Get-TestAccountAuditRule -Acl (Get-TestAuditAcl -Path $goodFile) -Account $probe) | Should -HaveCount 1
Get-TestAuditSddl -Path $goodFile | Should -Not -BeExactly $auditBefore
Get-TestDaclSddl -Path $goodFile | Should -BeExactly $daclBefore
}
}
Context 'Conflicting parameters' {
It 'Should reject -AppliesTo combined with -InheritanceFlags with an AmbiguousParameterSet error and change nothing' {
$file = New-TestSandboxItem -Sandbox $sandbox -Name 'AddAmbiguous'
$before = Get-TestDaclSddl -Path $file
{ Add-NTFSAudit -Path $file -Account $probe -AccessRights ReadData -AppliesTo ThisFolderOnly -InheritanceFlags None -ErrorAction Stop } |
Should -Throw -ErrorId 'AmbiguousParameterSet,NTFSSecurity.AddAudit'
Get-TestDaclSddl -Path $file | Should -BeExactly $before
}
}
Context 'Direct call of -SecurityDescriptor with -AppliesTo' {
# Add-NTFSAudit SDSimple (judged-audit.csv): every existing call binds it only through a splat
# (PermissionScopes.Tests.ps1) or through position (Audit.Tests.ps1); this one names the set's parameters
# directly.
It 'Should add the entry to the descriptor when -SecurityDescriptor, -Account, -AccessRights, and -AppliesTo are all named directly' -Skip:(-not $canReadAudit) {
$file = New-TestSandboxItem -Sandbox $sandbox -Name 'AddDirectSDSimple'
$sd = Get-NTFSSecurityDescriptor -Path $file -ErrorAction Stop
$result = @(Add-NTFSAudit -SecurityDescriptor $sd -Account $probe -AccessRights ReadData -AppliesTo ThisFolderOnly -PassThru -ErrorAction Stop)
$result | Should -HaveCount 1
$result[0] | Should -BeOfType [Security2.FileSystemAuditRule2]
(Get-TestAccountAuditRule -Acl $sd.SecurityDescriptor -Account $probe) | Should -HaveCount 1
}
}
}
Describe 'Remove-NTFSAudit' {
Context 'Binding -Path from the pipeline by property name' {
# -AppliesTo is named for the Simple row, not piped: a piped AppliesTo property would be dropped for a path (the
# default set PathComplex wins), so only the named parameter selects PathSimple.
It "Should remove the audit entry for the piped <Set> object that exists, write a ReadFileError for the one that does not, and keep the other account's entry" -ForEach @(
@{ Set = 'PathComplex'; ExtraProperties = @{ InheritanceFlags = 'None'; PropagationFlags = 'None' }; Named = @{} }
@{ Set = 'PathSimple'; ExtraProperties = @{}; Named = @{ AppliesTo = 'ThisFolderOnly' } }
) -Skip:(-not $canReadAudit) {
$missing = Join-Path -Path $sandbox -ChildPath ('RemovePipeMissing-{0}' -f [guid]::NewGuid().ToString('N'))
Assert-TestSandboxPath -Sandbox $sandbox -Path $missing
$good = New-TestSandboxItem -Sandbox $sandbox -Name "RemovePipeGood$Set"
Add-NTFSAudit -Path $good @entry -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
Add-NTFSAudit -Path $good -Account $keeper -AccessRights Delete -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
$daclBefore = Get-TestDaclSddl -Path $good
$items = @(
[pscustomobject] (@{ FullName = $missing; Account = $probe; AccessRights = 'ReadData' } + $ExtraProperties)
[pscustomobject] (@{ FullName = $good; Account = $probe; AccessRights = 'ReadData' } + $ExtraProperties)
)
$result = @($items | Remove-NTFSAudit @Named -PassThru -ErrorVariable auditErrors -ErrorAction SilentlyContinue)
$auditErrors | Should -HaveCount 1
$auditErrors[0].FullyQualifiedErrorId | Should -BeLike 'ReadFileError,*'
$auditErrors[0].CategoryInfo.Category | Should -Be 'OpenError'
$auditErrors[0].TargetObject | Should -Be $missing
$result | Should -Not -BeNullOrEmpty
$result | ForEach-Object -Process { $_.FullName | Should -Be $good }
(Get-TestAccountAuditRule -Acl (Get-Acl -LiteralPath $good -Audit) -Account $probe) | Should -BeNullOrEmpty
(Get-TestAccountAuditRule -Acl (Get-Acl -LiteralPath $good -Audit) -Account $keeper) | Should -HaveCount 1
Get-TestDaclSddl -Path $good | Should -BeExactly $daclBefore
}
}
Context 'Binding -SecurityDescriptor from the pipeline by property name' {
It "Should remove the audit entry for the piped <Set> object that has an audit section, write a ReadSecurityError for the one that does not, and keep the other account's entry" -ForEach @(
@{ Set = 'SDSimple'; ExtraProperties = @{ AppliesTo = 'ThisFolderOnly' } }
@{ Set = 'SDComplex'; ExtraProperties = @{ InheritanceFlags = 'None'; PropagationFlags = 'None' } }
) -Skip:(-not $canReadAudit) {
$badFile = New-TestSandboxItem -Sandbox $sandbox -Name "RemovePipeSDBad$Set"
$sdBad = Get-TestAccessOnlyDescriptor -Path $badFile
$goodFile = New-TestSandboxItem -Sandbox $sandbox -Name "RemovePipeSDGood$Set"
Add-NTFSAudit -Path $goodFile @entry -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
Add-NTFSAudit -Path $goodFile -Account $keeper -AccessRights Delete -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
$sdGood = Get-NTFSSecurityDescriptor -Path $goodFile -ErrorAction Stop
$items = @(
[pscustomobject] (@{ SecurityDescriptor = $sdBad; Account = $probe; AccessRights = 'ReadData' } + $ExtraProperties)
[pscustomobject] (@{ SecurityDescriptor = $sdGood; Account = $probe; AccessRights = 'ReadData' } + $ExtraProperties)
)
$result = @($items | Remove-NTFSAudit -PassThru -ErrorVariable auditErrors -ErrorAction SilentlyContinue)
$auditErrors | Should -HaveCount 1
$auditErrors[0].FullyQualifiedErrorId | Should -BeLike 'ReadSecurityError,*'
$auditErrors[0].TargetObject | Should -Be $sdBad
$result | Should -Not -BeNullOrEmpty
$result | ForEach-Object -Process { $_.FullName | Should -Be $goodFile }
(Get-TestAccountAuditRule -Acl $sdGood.SecurityDescriptor -Account $probe) | Should -BeNullOrEmpty
(Get-TestAccountAuditRule -Acl $sdGood.SecurityDescriptor -Account $keeper) | Should -HaveCount 1
}
}
Context 'Without -RemoveSpecific' {
# Judged-audit-notes.md: "the Modify entry keeps the other rights (probe first, then pin)".
It 'Should narrow an entry that grants more rights than it removes, instead of deleting it' -Skip:(-not $canReadAudit) {
$file = New-TestSandboxItem -Sandbox $sandbox -Name 'RemoveNarrow'
Add-NTFSAudit -Path $file -Account $probe -AccessRights Modify -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
Add-NTFSAudit -Path $file -Account $keeper -AccessRights Delete -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
Remove-NTFSAudit -Path $file @entry -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
$probeRule = Get-TestAccountAuditRule -Acl (Get-Acl -LiteralPath $file -Audit) -Account $probe
$probeRule | Should -HaveCount 1
$probeRule[0].FileSystemRights.HasFlag([System.Security.AccessControl.FileSystemRights]::ReadData) | Should -BeFalse
$probeRule[0].FileSystemRights.HasFlag([System.Security.AccessControl.FileSystemRights]::Delete) | Should -BeTrue
(Get-TestAccountAuditRule -Acl (Get-Acl -LiteralPath $file -Audit) -Account $keeper) | Should -HaveCount 1
}
}
Context 'Direct call of -Path with -AppliesTo' {
# Remove-NTFSAudit PathSimple (judged-audit.csv): every existing call binds it only through a splat
# (PermissionScopes.Tests.ps1); this one names the set's parameters directly.
It 'Should remove the entry from the path when -Path, -Account, -AccessRights, and -AppliesTo are all named directly' -Skip:(-not $canReadAudit) {
$file = New-TestSandboxItem -Sandbox $sandbox -Name 'RemoveDirectPathSimple'
Add-NTFSAudit -Path $file -Account $probe -AccessRights ReadData -AppliesTo ThisFolderOnly -ErrorAction Stop
Add-NTFSAudit -Path $file -Account $keeper -AccessRights Delete -AppliesTo ThisFolderOnly -ErrorAction Stop
$result = @(Remove-NTFSAudit -Path $file -Account $probe -AccessRights ReadData -AppliesTo ThisFolderOnly -PassThru -ErrorAction Stop)
$result | Should -Not -BeNullOrEmpty
$result | ForEach-Object -Process { $_ | Should -BeOfType [Security2.FileSystemAuditRule2] }
(Get-TestAccountAuditRule -Acl (Get-Acl -LiteralPath $file -Audit) -Account $probe) | Should -BeNullOrEmpty
(Get-TestAccountAuditRule -Acl (Get-Acl -LiteralPath $file -Audit) -Account $keeper) | Should -HaveCount 1
}
}
Context 'Direct call of -SecurityDescriptor with -AppliesTo' {
# Remove-NTFSAudit SDSimple (judged-audit.csv): every existing call binds it only through a splat
# (PermissionScopes.Tests.ps1); this one names the set's parameters directly.
It 'Should remove the entry from the descriptor when -SecurityDescriptor, -Account, -AccessRights, and -AppliesTo are all named directly' -Skip:(-not $canReadAudit) {
$file = New-TestSandboxItem -Sandbox $sandbox -Name 'RemoveDirectSDSimple'
$sd = Get-NTFSSecurityDescriptor -Path $file -ErrorAction Stop
Add-NTFSAudit -SecurityDescriptor $sd -Account $probe -AccessRights ReadData -AppliesTo ThisFolderOnly -ErrorAction Stop
Add-NTFSAudit -SecurityDescriptor $sd -Account $keeper -AccessRights Delete -AppliesTo ThisFolderOnly -ErrorAction Stop
$result = @(Remove-NTFSAudit -SecurityDescriptor $sd -Account $probe -AccessRights ReadData -AppliesTo ThisFolderOnly -PassThru -ErrorAction Stop)
$result | Should -Not -BeNullOrEmpty
$result | ForEach-Object -Process { $_ | Should -BeOfType [Security2.FileSystemAuditRule2] }
(Get-TestAccountAuditRule -Acl $sd.SecurityDescriptor -Account $probe) | Should -BeNullOrEmpty
(Get-TestAccountAuditRule -Acl $sd.SecurityDescriptor -Account $keeper) | Should -HaveCount 1
}
}
}
Describe 'Clear-NTFSAudit' {
Context 'Taking paths from the pipeline' {
It 'Should clear the audit entries of each path taken from the pipeline and leave the DACL of each unchanged' -Skip:(-not $canReadAudit) {
$first = New-TestSandboxItem -Sandbox $sandbox -Name 'ClearPipeFirst'
$second = New-TestSandboxItem -Sandbox $sandbox -Name 'ClearPipeSecond'
foreach ($path in $first, $second) {
Add-NTFSAudit -Path $path @entry -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
}
$daclBefore = @((Get-TestDaclSddl -Path $first), (Get-TestDaclSddl -Path $second))
$first, $second | Clear-NTFSAudit -ErrorVariable clearErrors -ErrorAction SilentlyContinue
$clearErrors | Should -BeNullOrEmpty
@(Get-NTFSAudit -Path $first -ExcludeInherited) | Should -BeNullOrEmpty
@(Get-NTFSAudit -Path $second -ExcludeInherited) | Should -BeNullOrEmpty
Get-TestDaclSddl -Path $first | Should -BeExactly $daclBefore[0]
Get-TestDaclSddl -Path $second | Should -BeExactly $daclBefore[1]
}
}
Context 'With -DisableInheritance' {
# judged-audit.csv: "-DisableInheritance on a path is passed (Audit.Tests.ps1:629) but its end state
# (protected SACL, no copied inherited entries) is never asserted."
It "Should protect the SACL and not copy the parent's inherited entry when clearing a child path" -Skip:(-not $canReadAudit) {
$parent = New-TestSandboxItem -Sandbox $sandbox -Name 'ClearDisableParent' -Directory
Add-NTFSAudit -Path $parent -Account $keeper -AccessRights Delete -AppliesTo ThisFolderAndFiles -AuditFlags Success -ErrorAction Stop
$child = Join-Path -Path $parent -ChildPath 'Child.txt'
Assert-TestSandboxPath -Sandbox $sandbox -Path $child
Set-Content -LiteralPath $child -Value 'Child'
Add-NTFSAudit -Path $child @entry -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
# Precondition: the parent's rule really is inherited onto the child before the test clears it.
@(Get-NTFSAudit -Path $child -ExcludeExplicit) | Should -HaveCount 1
$daclBefore = Get-TestDaclSddl -Path $child
Clear-NTFSAudit -Path $child -DisableInheritance -ErrorVariable clearErrors -ErrorAction SilentlyContinue
$clearErrors | Should -BeNullOrEmpty
(Get-TestAuditAcl -Path $child).AreAuditRulesProtected | Should -BeTrue
@((Get-Acl -LiteralPath $child -Audit).GetAuditRules($true, $true, $sidType)) | Should -BeNullOrEmpty
Get-TestDaclSddl -Path $child | Should -BeExactly $daclBefore
}
}
Context 'Binding -SecurityDescriptor from the pipeline' {
It 'Should clear each piped descriptor that has an audit section and continue past one that does not' -Skip:(-not $canReadAudit) {
$badFile = New-TestSandboxItem -Sandbox $sandbox -Name 'ClearPipeSDBad'
$sdBad = Get-TestAccessOnlyDescriptor -Path $badFile
$goodFile = New-TestSandboxItem -Sandbox $sandbox -Name 'ClearPipeSDGood'
Add-NTFSAudit -Path $goodFile @entry -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
$sdGood = Get-NTFSSecurityDescriptor -Path $goodFile -ErrorAction Stop
$auditBefore = Get-TestAuditSddl -Path $goodFile
$daclBefore = Get-TestDaclSddl -Path $goodFile
$sdBad, $sdGood | Clear-NTFSAudit -ErrorVariable clearErrors -ErrorAction SilentlyContinue
$clearErrors | Should -HaveCount 1
$clearErrors[0].FullyQualifiedErrorId | Should -BeLike 'ReadSecurityError,*'
$clearErrors[0].TargetObject | Should -Be $sdBad
@($sdGood.SecurityDescriptor.GetAuditRules($true, $false, $sidType)) | Should -BeNullOrEmpty
Get-TestAuditSddl -Path $goodFile | Should -BeExactly $auditBefore
Set-NTFSSecurityDescriptor -SecurityDescriptor $sdGood -ErrorAction Stop
@(Get-NTFSAudit -Path $goodFile -ExcludeInherited) | Should -BeNullOrEmpty
Get-TestDaclSddl -Path $goodFile | Should -BeExactly $daclBefore
}
}
}
Describe 'Get-NTFSAudit' {
Context 'With several paths' {
# judged-audit.csv observation: Audit.Tests.ps1:70-73 no longer reproduces a failing path followed by one
# that succeeds (the deny entry blocks the DACL, not the SACL that the cmdlet reads). A missing path does.
It 'Should return the entries of the existing path in either position and a ReadFileError, category OpenError, for the missing one' -Skip:(-not $canReadAudit) {
$folder = New-TestSandboxItem -Sandbox $sandbox -Name 'GetAuditFolder' -Directory
Add-NTFSAudit -Path $folder -Account $probe -AccessRights ReadData -AuditFlags Success -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
$missing = Join-Path -Path $sandbox -ChildPath ('GetAuditMissing-{0}' -f [guid]::NewGuid().ToString('N'))
Assert-TestSandboxPath -Sandbox $sandbox -Path $missing
$forward = @(Get-NTFSAudit -Path $missing, $folder -ErrorVariable forwardErrors -ErrorAction SilentlyContinue)
$backward = @(Get-NTFSAudit -Path $folder, $missing -ErrorVariable backwardErrors -ErrorAction SilentlyContinue)
foreach ($errors in $forwardErrors, $backwardErrors) {
$errors | Should -HaveCount 1
$errors[0].FullyQualifiedErrorId | Should -BeLike 'ReadFileError,*'
$errors[0].CategoryInfo.Category | Should -Be 'OpenError'
$errors[0].TargetObject | Should -Be $missing
}
foreach ($result in $forward, $backward) {
$result | Should -HaveCount 1
$result[0] | Should -BeOfType [Security2.FileSystemAuditRule2]
$result[0].FullName | Should -Be $folder
$result[0].Account.Sid | Should -Be $probe
$result[0].AccessRights.HasFlag([Security2.FileSystemRights2]::ReadData) | Should -BeTrue
$result[0].AuditFlags | Should -Be ([System.Security.AccessControl.AuditFlags]::Success)
$result[0].IsInherited | Should -BeFalse
$result[0].InheritanceEnabled | Should -Be (-not (Get-Acl -LiteralPath $folder -Audit).AreAuditRulesProtected)
}
}
}
Context 'Taking paths from the pipeline' {
It 'Should return the entries of each path object taken from the pipeline by value' -Skip:(-not $canReadAudit) {
$first = New-TestSandboxItem -Sandbox $sandbox -Name 'GetAuditPipeFirst'
$second = New-TestSandboxItem -Sandbox $sandbox -Name 'GetAuditPipeSecond'
foreach ($path in $first, $second) {
Add-NTFSAudit -Path $path @entry -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
}
$result = @(Get-Item2 -Path $first, $second | Get-NTFSAudit -ErrorAction Stop)
($result.FullName | Sort-Object) -join '|' | Should -Be (($first, $second | Sort-Object) -join '|')
}
}
Context 'When the audit entries cannot be read' {
# judged-audit.csv: Audit.Tests.ps1:48 asserts the ErrorId only; this adds the category and the target.
It 'Should write a ReadSecurityError with category OpenError and the path as target without the Security privilege' -Skip:$canReadAudit {
$file = New-TestSandboxItem -Sandbox $sandbox -Name 'GetAuditNoPrivilege'
$entries = @(Get-NTFSAudit -Path $file -ErrorVariable auditErrors -ErrorAction SilentlyContinue)
$entries | Should -BeNullOrEmpty
$auditErrors | Should -HaveCount 1
$auditErrors[0].FullyQualifiedErrorId | Should -BeLike 'ReadSecurityError,*'
$auditErrors[0].CategoryInfo.Category | Should -Be 'OpenError'
$auditErrors[0].TargetObject | Should -Be $file
}
}
Context 'Binding -SecurityDescriptor from the pipeline' {
It 'Should return the entries of the piped descriptor that has an audit section and continue past one that does not' -Skip:(-not $canReadAudit) {
$badFile = New-TestSandboxItem -Sandbox $sandbox -Name 'GetAuditSDBad'
$sdBad = Get-TestAccessOnlyDescriptor -Path $badFile
$goodFile = New-TestSandboxItem -Sandbox $sandbox -Name 'GetAuditSDGood'
Add-NTFSAudit -Path $goodFile @entry -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
$expected = @(Get-NTFSAudit -Path $goodFile -ErrorAction Stop | ForEach-Object -Process { '{0}|{1}|{2}' -f $_.Account.Sid, $_.AccessRights, $_.AuditFlags })
$sdGood = Get-NTFSSecurityDescriptor -Path $goodFile -ErrorAction Stop
$result = @($sdBad, $sdGood | Get-NTFSAudit -ErrorVariable auditErrors -ErrorAction SilentlyContinue)
$auditErrors | Should -HaveCount 1
$auditErrors[0].FullyQualifiedErrorId | Should -BeLike 'ReadSecurityError,*'
$auditErrors[0].CategoryInfo.Category | Should -Be 'InvalidData'
$auditErrors[0].TargetObject | Should -Be $sdBad
$result | Should -Not -BeNullOrEmpty
($result | ForEach-Object -Process { '{0}|{1}|{2}' -f $_.Account.Sid, $_.AccessRights, $_.AuditFlags }) -join ';' | Should -Be ($expected -join ';')
}
}
}
Describe 'Get-NTFSOrphanedAudit' {
Context 'Taking paths from the pipeline' {
It 'Should return the orphaned entries of each path taken from the pipeline and write a ReadError, category OpenError, for one that does not exist' -Skip:(-not $canReadAudit) {
$orphaned = New-TestSandboxItem -Sandbox $sandbox -Name 'OrphanedPipe'
Add-NTFSAudit -Path $orphaned -Account 'S-1-5-21-1-2-3-9001' -AccessRights ReadData -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
$normal = New-TestSandboxItem -Sandbox $sandbox -Name 'NormalPipe'
Add-NTFSAudit -Path $normal @entry -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
$missing = Join-Path -Path $sandbox -ChildPath ('OrphanedMissing-{0}' -f [guid]::NewGuid().ToString('N'))
Assert-TestSandboxPath -Sandbox $sandbox -Path $missing
$result = @($missing, $orphaned, $normal | Get-NTFSOrphanedAudit -ErrorVariable orphanedErrors -ErrorAction SilentlyContinue)
$orphanedErrors | Should -HaveCount 1
$orphanedErrors[0].FullyQualifiedErrorId | Should -BeLike 'ReadError,*'
$orphanedErrors[0].CategoryInfo.Category | Should -Be 'OpenError'
$orphanedErrors[0].TargetObject | Should -Be $missing
$result | Should -HaveCount 1
$result[0].FullName | Should -Be $orphaned
$result[0].Account.Sid | Should -Be 'S-1-5-21-1-2-3-9001'
}
}
Context 'Binding -SecurityDescriptor from the pipeline' {
It 'Should return the orphaned entries of the piped descriptor that has an audit section and continue past one that does not' -Skip:(-not $canReadAudit) {
$badFile = New-TestSandboxItem -Sandbox $sandbox -Name 'OrphanedSDBad'
$sdBad = Get-TestAccessOnlyDescriptor -Path $badFile
$orphanedFile = New-TestSandboxItem -Sandbox $sandbox -Name 'OrphanedSDGood'
Add-NTFSAudit -Path $orphanedFile -Account 'S-1-5-21-1-2-3-9002' -AccessRights ReadData -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
$sdOrphaned = Get-NTFSSecurityDescriptor -Path $orphanedFile -ErrorAction Stop
$result = @($sdBad, $sdOrphaned | Get-NTFSOrphanedAudit -ErrorVariable orphanedErrors -ErrorAction SilentlyContinue)
$orphanedErrors | Should -HaveCount 1
$orphanedErrors[0].TargetObject | Should -Be $sdBad
$result | Should -HaveCount 1
$result[0] | Should -BeOfType [Security2.FileSystemAuditRule2]
$result[0].Account.Sid | Should -Be 'S-1-5-21-1-2-3-9002'
$result[0].FullName | Should -Be $orphanedFile
}
}
Context 'Direct call of -SecurityDescriptor' {
# Get-NTFSOrphanedAudit SD (judged-audit.csv): both existing calls bind it only because PowerShell resolves
# a piped object with a SecurityDescriptor property to this parameter (Audit.Tests.ps1:243, :294); this one
# names it directly.
It 'Should return the orphaned entries when -SecurityDescriptor is named directly' -Skip:(-not $canReadAudit) {
$file = New-TestSandboxItem -Sandbox $sandbox -Name 'OrphanedDirectSD'
Add-NTFSAudit -Path $file -Account 'S-1-5-21-1-2-3-9003' -AccessRights ReadData -InheritanceFlags None -PropagationFlags None -ErrorAction Stop
$sd = Get-NTFSSecurityDescriptor -Path $file -ErrorAction Stop
$result = @(Get-NTFSOrphanedAudit -SecurityDescriptor $sd -ErrorAction Stop)
$result | Should -HaveCount 1
$result[0] | Should -BeOfType [Security2.FileSystemAuditRule2]
$result[0].Account.Sid | Should -Be 'S-1-5-21-1-2-3-9003'
$result[0].FullName | Should -Be $file
}
}
}