library/xPSDesiredStateConfiguration/9.2.0/DSCResources/DSC_xArchive/DSC_xArchive.psm1
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$errorActionPreference = 'Stop' Set-StrictMode -Version 'Latest' $modulePath = Join-Path -Path (Split-Path -Path (Split-Path -Path $PSScriptRoot -Parent) -Parent) -ChildPath 'Modules' # Import the shared modules Import-Module -Name (Join-Path -Path $modulePath ` -ChildPath (Join-Path -Path 'xPSDesiredStateConfiguration.Common' ` -ChildPath 'xPSDesiredStateConfiguration.Common.psm1')) Import-Module -Name (Join-Path -Path $modulePath -ChildPath 'DscResource.Common') # Import Localization Strings $script:localizedData = Get-LocalizedData -DefaultUICulture 'en-US' Add-Type -AssemblyName 'System.IO.Compression' # This resource has not yet been tested on a Nano server. if (-not (Test-IsNanoServer)) { Add-Type -AssemblyName 'System.IO.Compression.FileSystem' } <# .SYNOPSIS Retrieves the current state of the archive resource with the specified path and destination. The returned object provides the following properties: Path: The specified path. Destination: The specified destination. Ensure: Present if the archive at the specified path is expanded at the specified destination. Absent if the archive at the specified path is not expanded at the specified destination. .PARAMETER Path The path to the archive file that should or should not be expanded at the specified destination. .PARAMETER Destination The path where the archive file should or should not be expanded. .PARAMETER Validate Specifies whether or not to validate that a file at the destination with the same name as a file in the archive actually matches that corresponding file in the archive by the specified checksum method. If a file does not match it will be considered not present. The default value is false. .PARAMETER Checksum The Checksum method to use to validate whether or not a file at the destination with the same name as a file in the archive actually matches that corresponding file in the archive. An invalid argument exception will be thrown if Checksum is specified while Validate is specified as false. ModifiedDate will check that the LastWriteTime property of the file at the destination matches the LastWriteTime property of the file in the archive. CreatedDate will check that the CreationTime property of the file at the destination matches the CreationTime property of the file in the archive. SHA-1, SHA-256, and SHA-512 will check that the hash of the file at the destination by the specified SHA method matches the hash of the file in the archive by the specified SHA method. The default value is ModifiedDate. .PARAMETER Credential The credential of a user account with permissions to access the specified archive path and destination if needed. #> function Get-TargetResource { [OutputType([System.Collections.Hashtable])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Destination, [Parameter()] [System.Boolean] $Validate = $false, [Parameter()] [ValidateSet('SHA-1', 'SHA-256', 'SHA-512', 'CreatedDate', 'ModifiedDate')] [System.String] $Checksum = 'ModifiedDate', [Parameter()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential ) if ($PSBoundParameters.ContainsKey('Checksum') -and -not $Validate) { $errorMessage = $script:localizedData.ChecksumSpecifiedAndValidateFalse -f $Checksum, $Path, $Destination New-InvalidArgumentException -ArgumentName 'Checksum or Validate' -Message $errorMessage } $archiveState = @{ Path = $Path Destination = $Destination } # In case an error occurs, we assume that the archive is not expanded at the destination $archiveExpandedAtDestination = $false $psDrive = $null if ($PSBoundParameters.ContainsKey('Credential')) { $psDrive = Mount-PSDriveWithCredential -Path $Path -Credential $Credential } try { Assert-PathExistsAsLeaf -Path $Path Assert-DestinationDoesNotExistAsFile -Destination $Destination Write-Verbose -Message ($script:localizedData.RetrievingArchiveState -f $Path, $Destination) $testArchiveExistsAtDestinationParameters = @{ ArchiveSourcePath = $Path Destination = $Destination } if ($Validate) { $testArchiveExistsAtDestinationParameters['Checksum'] = $Checksum } if (Test-Path -LiteralPath $Destination) { Write-Verbose -Message ($script:localizedData.DestinationExists -f $Destination) $archiveExpandedAtDestination = Test-ArchiveExistsAtDestination @testArchiveExistsAtDestinationParameters } else { Write-Verbose -Message ($script:localizedData.DestinationDoesNotExist -f $Destination) } } finally { if ($null -ne $psDrive) { Write-Verbose -Message ($script:localizedData.RemovingPSDrive -f $psDrive.Root) $null = Remove-PSDrive -Name $psDrive -Force -ErrorAction 'SilentlyContinue' } } if ($archiveExpandedAtDestination) { $archiveState['Ensure'] = 'Present' } else { $archiveState['Ensure'] = 'Absent' } return $archiveState } <# .SYNOPSIS Expands the archive (.zip) file at the specified path to the specified destination or removes the expanded archive (.zip) file at the specified path from the specified destination. .PARAMETER Path The path to the archive file that should be expanded to or removed from the specified destination. .PARAMETER Destination The path where the specified archive file should be expanded to or removed from. .PARAMETER Ensure Specifies whether or not the expanded content of the archive file at the specified path should exist at the specified destination. To update the specified destination to have the expanded content of the archive file at the specified path, specify this property as Present. To remove the expanded content of the archive file at the specified path from the specified destination, specify this property as Absent. The default value is Present. .PARAMETER Validate Specifies whether or not to validate that a file at the destination with the same name as a file in the archive actually matches that corresponding file in the archive by the specified checksum method. If the file does not match and Ensure is specified as Present and Force is not specified, the resource will throw an error that the file at the destination cannot be overwritten. If the file does not match and Ensure is specified as Present and Force is specified, the file at the destination will be overwritten. If the file does not match and Ensure is specified as Absent, the file at the destination will not be removed. The default value is false. .PARAMETER Checksum The Checksum method to use to validate whether or not a file at the destination with the same name as a file in the archive actually matches that corresponding file in the archive. An invalid argument exception will be thrown if Checksum is specified while Validate is specified as false. ModifiedDate will check that the LastWriteTime property of the file at the destination matches the LastWriteTime property of the file in the archive. CreatedDate will check that the CreationTime property of the file at the destination matches the CreationTime property of the file in the archive. SHA-1, SHA-256, and SHA-512 will check that the hash of the file at the destination by the specified SHA method matches the hash of the file in the archive by the specified SHA method. The default value is ModifiedDate. .PARAMETER Credential The credential of a user account with permissions to access the specified archive path and destination if needed. .PARAMETER Force Specifies whether or not any existing files or directories at the destination with the same name as a file or directory in the archive should be overwritten to match the file or directory in the archive. When this property is false, an error will be thrown if an item at the destination needs to be overwritten. The default value is false. #> function Set-TargetResource { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Destination, [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present', [Parameter()] [System.Boolean] $Validate = $false, [Parameter()] [ValidateSet('SHA-1', 'SHA-256', 'SHA-512', 'CreatedDate', 'ModifiedDate')] [System.String] $Checksum = 'ModifiedDate', [Parameter()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential, [Parameter()] [System.Boolean] $Force = $false ) if ($PSBoundParameters.ContainsKey('Checksum') -and -not $Validate) { $errorMessage = $script:localizedData.ChecksumSpecifiedAndValidateFalse -f $Checksum, $Path, $Destination New-InvalidArgumentException -ArgumentName 'Checksum or Validate' -Message $errorMessage } $psDrive = $null if ($PSBoundParameters.ContainsKey('Credential')) { $psDrive = Mount-PSDriveWithCredential -Path $Path -Credential $Credential } try { Assert-PathExistsAsLeaf -Path $Path Assert-DestinationDoesNotExistAsFile -Destination $Destination Write-Verbose -Message ($script:localizedData.SettingArchiveState -f $Path, $Destination) $expandArchiveToDestinationParameters = @{ ArchiveSourcePath = $Path Destination = $Destination Force = $Force } $removeArchiveFromDestinationParameters = @{ ArchiveSourcePath = $Path Destination = $Destination } if ($Validate) { $expandArchiveToDestinationParameters['Checksum'] = $Checksum $removeArchiveFromDestinationParameters['Checksum'] = $Checksum } if (Test-Path -LiteralPath $Destination) { Write-Verbose -Message ($script:localizedData.DestinationExists -f $Destination) if ($Ensure -eq 'Present') { Expand-ArchiveToDestination @expandArchiveToDestinationParameters } else { Remove-ArchiveFromDestination @removeArchiveFromDestinationParameters } } else { Write-Verbose -Message ($script:localizedData.DestinationDoesNotExist -f $Destination) if ($Ensure -eq 'Present') { Write-Verbose -Message ($script:localizedData.CreatingDirectoryAtDestination -f $Destination) $null = New-Item -Path $Destination -ItemType 'Directory' Expand-ArchiveToDestination @expandArchiveToDestinationParameters } } Write-Verbose -Message ($script:localizedData.ArchiveStateSet -f $Path, $Destination) } finally { if ($null -ne $psDrive) { Write-Verbose -Message ($script:localizedData.RemovingPSDrive -f $psDrive.Root) $null = Remove-PSDrive -Name $psDrive -Force -ErrorAction 'SilentlyContinue' } } } <# .SYNOPSIS Tests whether or not the archive (.zip) file at the specified path is expanded at the specified destination. .PARAMETER Path The path to the archive file that should or should not be expanded at the specified destination. .PARAMETER Destination The path where the archive file should or should not be expanded. .PARAMETER Ensure Specifies whether or not the archive file should be expanded to the specified destination. To test whether the archive file is expanded at the specified destination, specify this property as Present. To test whether the archive file is not expanded at the specified destination, specify this property as Absent. The default value is Present. .PARAMETER Validate Specifies whether or not to validate that a file at the destination with the same name as a file in the archive actually matches that corresponding file in the archive by the specified checksum method. If a file does not match it will be considered not present. The default value is false. .PARAMETER Checksum The Checksum method to use to validate whether or not a file at the destination with the same name as a file in the archive actually matches that corresponding file in the archive. An invalid argument exception will be thrown if Checksum is specified while Validate is specified as false. ModifiedDate will check that the LastWriteTime property of the file at the destination matches the LastWriteTime property of the file in the archive. CreatedDate will check that the CreationTime property of the file at the destination matches the CreationTime property of the file in the archive. SHA-1, SHA-256, and SHA-512 will check that the hash of the file at the destination by the specified SHA method matches the hash of the file in the archive by the specified SHA method. The default value is ModifiedDate. .PARAMETER Credential The credential of a user account with permissions to access the specified archive path and destination if needed. .PARAMETER Force Not used in Test-TargetResource. #> function Test-TargetResource { [OutputType([System.Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Path, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Destination, [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present', [Parameter()] [System.Boolean] $Validate = $false, [Parameter()] [ValidateSet('SHA-1', 'SHA-256', 'SHA-512', 'CreatedDate', 'ModifiedDate')] [System.String] $Checksum = 'ModifiedDate', [Parameter()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential, [Parameter()] [System.Boolean] $Force = $false ) $getTargetResourceParameters = @{ Path = $Path Destination = $Destination } $optionalGetTargetResourceParameters = @( 'Validate', 'Checksum', 'Credential' ) foreach ($optionalGetTargetResourceParameter in $optionalGetTargetResourceParameters) { if ($PSBoundParameters.ContainsKey($optionalGetTargetResourceParameter)) { $getTargetResourceParameters[$optionalGetTargetResourceParameter] = $PSBoundParameters[$optionalGetTargetResourceParameter] } } $archiveResourceState = Get-TargetResource @getTargetResourceParameters Write-Verbose -Message ($script:localizedData.TestingArchiveState -f $Path, $Destination) $archiveInDesiredState = $archiveResourceState.Ensure -ieq $Ensure return $archiveInDesiredState } <# .SYNOPSIS Creates a new GUID. This is a wrapper function for unit testing. #> function New-Guid { [OutputType([System.Guid])] [CmdletBinding()] param () return [System.Guid]::NewGuid() } <# .SYNOPSIS Mounts a PSDrive to access the specified path with the permissions granted by the specified credential. .PARAMETER Path The path to which to mount a PSDrive. .PARAMETER Credential The credential of the user account with permissions to access the specified path. #> function Mount-PSDriveWithCredential { [OutputType([System.Management.Automation.PSDriveInfo])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Path, [Parameter(Mandatory = $true)] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential ) $newPSDrive = $null if (Test-Path -LiteralPath $Path -ErrorAction 'SilentlyContinue') { Write-Verbose -Message ($script:localizedData.PathAccessiblePSDriveNotNeeded -f $Path) } else { $pathIsADirectory = $Path.EndsWith('\') if ($pathIsADirectory) { $pathToPSDriveRoot = $Path } else { $lastIndexOfBackslash = $Path.LastIndexOf('\') $pathDoesNotContainADirectory = $lastIndexOfBackslash -eq -1 if ($pathDoesNotContainADirectory) { $errorMessage = $script:localizedData.PathDoesNotContainValidPSDriveRoot -f $Path New-InvalidArgumentException -ArgumentName 'Path' -Message $errorMessage } else { $pathToPSDriveRoot = $Path.Substring(0, $lastIndexOfBackslash) } } $newPSDriveParameters = @{ Name = New-Guid PSProvider = 'FileSystem' Root = $pathToPSDriveRoot Scope = 'Script' Credential = $Credential } try { Write-Verbose -Message ($script:localizedData.CreatingPSDrive -f $pathToPSDriveRoot, $Credential.UserName) $newPSDrive = New-PSDrive @newPSDriveParameters } catch { $errorMessage = $script:localizedData.ErrorCreatingPSDrive -f $pathToPSDriveRoot, $Credential.UserName New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } } return $newPSDrive } <# .SYNOPSIS Throws an invalid argument exception if the specified path does not exist or is not a path leaf. .PARAMETER Path The path to assert. #> function Assert-PathExistsAsLeaf { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Path ) $pathExistsAsLeaf = Test-Path -LiteralPath $Path -PathType 'Leaf' -ErrorAction 'SilentlyContinue' if (-not $pathExistsAsLeaf) { $errorMessage = $script:localizedData.PathDoesNotExistAsLeaf -f $Path New-InvalidArgumentException -ArgumentName 'Path' -Message $errorMessage } } <# .SYNOPSIS Throws an invalid argument exception if the specified destination path already exists as a file. .PARAMETER Destination The destination path to assert. #> function Assert-DestinationDoesNotExistAsFile { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Destination ) $itemAtDestination = Get-Item -LiteralPath $Destination -ErrorAction 'SilentlyContinue' $itemAtDestinationExists = $null -ne $itemAtDestination $itemAtDestinationIsFile = $itemAtDestination -is [System.IO.FileInfo] if ($itemAtDestinationExists -and $itemAtDestinationIsFile) { $errorMessage = $script:localizedData.DestinationExistsAsFile -f $Destination New-InvalidArgumentException -ArgumentName 'Destination' -Message $errorMessage } } <# .SYNOPSIS Opens the archive at the given path. This is a wrapper function for unit testing. .PARAMETER Path The path to the archive to open. #> function Open-Archive { [OutputType([System.IO.Compression.ZipArchive])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Path ) Write-Verbose -Message ($script:localizedData.OpeningArchive -f $Path) try { $archive = [System.IO.Compression.ZipFile]::OpenRead($Path) } catch { $errorMessage = $script:localizedData.ErrorOpeningArchive -f $Path New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } return $archive } <# .SYNOPSIS Closes the specified archive. This is a wrapper function for unit testing. .PARAMETER Archive The archive to close. #> function Close-Archive { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Compression.ZipArchive] $Archive ) Write-Verbose -Message ($script:localizedData.ClosingArchive -f $Path) $null = $Archive.Dispose() } <# .SYNOPSIS Retrieves the archive entries from the specified archive. This is a wrapper function for unit testing. .PARAMETER Archive The archive of which to retrieve the archive entries. #> function Get-ArchiveEntries { [OutputType([System.IO.Compression.ZipArchiveEntry[]])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Compression.ZipArchive] $Archive ) return $Archive.Entries } <# .SYNOPSIS Retrieves the full name of the specified archive entry. This is a wrapper function for unit testing. .PARAMETER ArchiveEntry The archive entry to retrieve the full name of. #> function Get-ArchiveEntryFullName { [OutputType([System.String])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Compression.ZipArchiveEntry] $ArchiveEntry ) return $ArchiveEntry.FullName } <# .SYNOPSIS Opens the specified archive entry. This is a wrapper function for unit testing. .PARAMETER ArchiveEntry The archive entry to open. #> function Open-ArchiveEntry { [OutputType([System.IO.Stream])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Compression.ZipArchiveEntry] $ArchiveEntry ) Write-Verbose -Message ($script:localizedData.OpeningArchiveEntry -f $ArchiveEntry.FullName) return $ArchiveEntry.Open() } <# .SYNOPSIS Closes the specified stream. This is a wrapper function for unit testing. .PARAMETER Stream The stream to close. #> function Close-Stream { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Stream] $Stream ) $null = $Stream.Dispose() } <# .SYNOPSIS Tests if the given checksum method name is the name of a SHA checksum method. .PARAMETER Checksum The name of the checksum method to test. #> function Test-ChecksumIsSha { [OutputType([System.Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Checksum ) return ($Checksum.Length -ge 'SHA'.Length) -and ($Checksum.Substring(0, 3) -ieq 'SHA') } <# .SYNOPSIS Converts the specified DSC hash algorithm name (with a hyphen) to a PowerShell hash algorithm name (without a hyphen). The in-box PowerShell Get-FileHash cmdlet will only hash algorithm names without hypens. .PARAMETER DscHashAlgorithmName The DSC hash algorithm name to convert. #> function ConvertTo-PowerShellHashAlgorithmName { [OutputType([System.String])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $DscHashAlgorithmName ) return $DscHashAlgorithmName.Replace('-', '') } <# .SYNOPSIS Tests if the hash of the specified file matches the hash of the specified archive entry using the specified hash algorithm. .PARAMETER FilePath The path to the file to test the hash of. .PARAMETER CacheEntry The cache entry to test the hash of. .PARAMETER HashAlgorithmName The name of the hash algorithm to use to retrieve the hashes of the file and archive entry. #> function Test-FileHashMatchesArchiveEntryHash { [OutputType([System.Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $FilePath, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Compression.ZipArchiveEntry] $ArchiveEntry, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $HashAlgorithmName ) $archiveEntryFullName = Get-ArchiveEntryFullName -ArchiveEntry $ArchiveEntry Write-Verbose -Message ($script:localizedData.ComparingHashes -f $FilePath, $archiveEntryFullName, $HashAlgorithmName) $fileHashMatchesArchiveEntryHash = $false $powerShellHashAlgorithmName = ConvertTo-PowerShellHashAlgorithmName -DscHashAlgorithmName $HashAlgorithmName $openStreams = @() try { $archiveEntryStream = Open-ArchiveEntry -ArchiveEntry $ArchiveEntry $openStreams += $archiveEntryStream # The Open mode will open the file for reading without modifying the file $fileStreamMode = [System.IO.FileMode]::Open $fileStream = New-Object -TypeName 'System.IO.FileStream' -ArgumentList @( $FilePath, $fileStreamMode ) $openStreams += $fileStream $fileHash = Get-FileHash -InputStream $fileStream -Algorithm $powerShellHashAlgorithmName $archiveEntryHash = Get-FileHash -InputStream $archiveEntryStream -Algorithm $powerShellHashAlgorithmName $hashAlgorithmsMatch = $fileHash.Algorithm -eq $archiveEntryHash.Algorithm $hashesMatch = $fileHash.Hash -eq $archiveEntryHash.Hash $fileHashMatchesArchiveEntryHash = $hashAlgorithmsMatch -and $hashesMatch } catch { $errorMessage = $script:localizedData.ErrorComparingHashes -f $FilePath, $archiveEntryFullName, $HashAlgorithmName New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } finally { foreach ($openStream in $openStreams) { Close-Stream -Stream $openStream } } return $fileHashMatchesArchiveEntryHash } <# .SYNOPSIS Retrieves the timestamp of the specified file for the specified checksum method and returns it as a checksum. .PARAMETER File The file to retrieve the timestamp of. .PARAMETER Checksum The checksum method to retrieve the timestamp checksum for. .NOTES The returned string is file timestamp normalized to the format specified in ConvertTo-CheckSumFromDateTime. #> function Get-ChecksumFromFileTimestamp { [OutputType([System.String])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.FileInfo] $File, [Parameter(Mandatory = $true)] [ValidateSet('CreatedDate', 'ModifiedDate')] [System.String] $Checksum ) $timestamp = Get-TimestampForChecksum @PSBoundParameters return ConvertTo-ChecksumFromDateTime -Date $timestamp } <# .SYNOPSIS Retrieves the timestamp of the specified file for the specified checksum method. .PARAMETER File The file to retrieve the timestamp of. .PARAMETER Checksum The checksum method to retrieve the timestamp for. #> function Get-TimestampForChecksum { [OutputType([System.DateTime])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.FileInfo] $File, [Parameter(Mandatory = $true)] [ValidateSet('CreatedDate', 'ModifiedDate')] [System.String] $Checksum ) if ($Checksum -ieq 'CreatedDate') { $relevantTimestamp = 'CreationTime' } elseif ($Checksum -ieq 'ModifiedDate') { $relevantTimestamp = 'LastWriteTime' } return Get-TimestampFromFile -File $File -Timestamp $relevantTimestamp } <# .SYNOPSIS Retrieves a timestamp of the specified file. .PARAMETER File The file to retrieve the timestamp from. .PARAMETER Timestamp The timestamp attribute to retrieve. #> function Get-TimestampFromFile { [OutputType([System.Datetime])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.FileInfo] $File, [Parameter(Mandatory = $true)] [ValidateSet('CreationTime', 'LastWriteTime')] [System.String] $Timestamp ) return $File.$Timestamp } <# .SYNOPSIS Converts a datetime object into the format used for a checksum. .PARAMETER Date The date to use to generate the checksum. .NOTES The returned date is normalized to the General (G) date format. https://technet.microsoft.com/en-us/library/ee692801.aspx Because the General (G) is localization specific a non-localization specific format such as ISO9660 could be used in future. #> function ConvertTo-ChecksumFromDateTime { [OutputType([System.String])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.DateTime] $Date ) return Get-Date -Date $Date -Format 'G' } <# .SYNOPSIS Retrieves the last write time of the specified archive entry. This is a wrapper function for unit testing. .PARAMETER ArchiveEntry The archive entry to retrieve the last write time of. #> function Get-ArchiveEntryLastWriteTime { [OutputType([System.DateTime])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Compression.ZipArchiveEntry] $ArchiveEntry ) return $ArchiveEntry.LastWriteTime.DateTime } <# .SYNOPSIS Tests if the specified file matches the specified archive entry based on the specified checksum method. .PARAMETER File The file to test against the specified archive entry. .PARAMETER ArchiveEntry The archive entry to test against the specified file. .PARAMETER Checksum The checksum method to use to determine whether or not the specified file matches the specified archive entry. #> function Test-FileMatchesArchiveEntryByChecksum { [OutputType([System.Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.FileInfo] $File, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Compression.ZipArchiveEntry] $ArchiveEntry, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Checksum ) $archiveEntryFullName = Get-ArchiveEntryFullName -ArchiveEntry $ArchiveEntry Write-Verbose -Message ($script:localizedData.TestingIfFileMatchesArchiveEntryByChecksum -f $File.FullName, $archiveEntryFullName, $Checksum) $fileMatchesArchiveEntry = $false if (Test-ChecksumIsSha -Checksum $Checksum) { $fileHashMatchesArchiveEntryHash = Test-FileHashMatchesArchiveEntryHash -FilePath $File.FullName -ArchiveEntry $ArchiveEntry -HashAlgorithmName $Checksum if ($fileHashMatchesArchiveEntryHash) { Write-Verbose -Message ($script:localizedData.FileMatchesArchiveEntryByChecksum -f $File.FullName, $archiveEntryFullName, $Checksum) $fileMatchesArchiveEntry = $true } else { Write-Verbose -Message ($script:localizedData.FileDoesNotMatchArchiveEntryByChecksum -f $File.FullName, $archiveEntryFullName, $Checksum) } } else { $fileTimestampForChecksum = Get-ChecksumFromFileTimestamp -File $File -Checksum $Checksum $archiveEntryLastWriteTime = Get-ArchiveEntryLastWriteTime -ArchiveEntry $ArchiveEntry $archiveEntryLastWriteTimeChecksum = ConvertTo-CheckSumFromDateTime -Date $archiveEntryLastWriteTime if ($fileTimestampForChecksum.Equals($archiveEntryLastWriteTimeChecksum)) { Write-Verbose -Message ($script:localizedData.FileMatchesArchiveEntryByChecksum -f $File.FullName, $archiveEntryFullName, $Checksum) $fileMatchesArchiveEntry = $true } else { Write-Verbose -Message ($script:localizedData.FileDoesNotMatchArchiveEntryByChecksum -f $File.FullName, $archiveEntryFullName, $Checksum) } } return $fileMatchesArchiveEntry } <# .SYNOPSIS Tests if the given archive entry name represents a directory. .PARAMETER ArchiveEntryName The archive entry name to test. #> function Test-ArchiveEntryIsDirectory { [OutputType([System.Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $ArchiveEntryName ) return $ArchiveEntryName.EndsWith('\') -or $ArchiveEntryName.EndsWith('/') } <# .SYNOPSIS Tests if the specified archive exists in its expanded form at the destination. .PARAMETER Archive The archive to test for existence at the specified destination. .PARAMETER Destination The path to the destination to check for the presence of the expanded form of the specified archive. .PARAMETER Checksum The checksum method to use to determine whether a file in the archive matches a file at the destination. If not provided, only the existence of the items in the archive will be checked. #> function Test-ArchiveExistsAtDestination { [OutputType([System.Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $ArchiveSourcePath, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Destination, [Parameter()] [ValidateSet('SHA-1', 'SHA-256', 'SHA-512', 'CreatedDate', 'ModifiedDate')] [System.String] $Checksum ) Write-Verbose -Message ($script:localizedData.TestingIfArchiveExistsAtDestination -f $Destination) $archiveExistsAtDestination = $true $archive = Open-Archive -Path $ArchiveSourcePath try { $archiveEntries = Get-ArchiveEntries -Archive $archive foreach ($archiveEntry in $archiveEntries) { $archiveEntryFullName = Get-ArchiveEntryFullName -ArchiveEntry $archiveEntry $archiveEntryPathAtDestination = Join-Path -Path $Destination -ChildPath $archiveEntryFullName $archiveEntryItemAtDestination = Get-Item -LiteralPath $archiveEntryPathAtDestination -ErrorAction 'SilentlyContinue' if ($null -eq $archiveEntryItemAtDestination) { Write-Verbose -Message ($script:localizedData.ItemWithArchiveEntryNameDoesNotExist -f $archiveEntryPathAtDestination) $archiveExistsAtDestination = $false break } else { Write-Verbose -Message ($script:localizedData.ItemWithArchiveEntryNameExists -f $archiveEntryPathAtDestination) if (Test-ArchiveEntryIsDirectory -ArchiveEntryName $archiveEntryFullName) { if (-not ($archiveEntryItemAtDestination -is [System.IO.DirectoryInfo])) { Write-Verbose -Message ($script:localizedData.ItemWithArchiveEntryNameIsNotDirectory -f $archiveEntryPathAtDestination) $archiveExistsAtDestination = $false break } } else { if ($archiveEntryItemAtDestination -is [System.IO.FileInfo]) { if ($PSBoundParameters.ContainsKey('Checksum')) { if (-not (Test-FileMatchesArchiveEntryByChecksum -File $archiveEntryItemAtDestination -ArchiveEntry $archiveEntry -Checksum $Checksum)) { $archiveExistsAtDestination = $false break } } } else { Write-Verbose -Message ($script:localizedData.ItemWithArchiveEntryNameIsNotFile -f $archiveEntryPathAtDestination) $archiveExistsAtDestination = $false break } } } } } finally { Close-Archive -Archive $archive } if ($archiveExistsAtDestination) { Write-Verbose -Message ($script:localizedData.ArchiveExistsAtDestination -f $ArchiveSourcePath, $Destination) } else { Write-Verbose -Message ($script:localizedData.ArchiveDoesNotExistAtDestination -f $ArchiveSourcePath, $Destination) } return $archiveExistsAtDestination } <# .SYNOPSIS Copies the contents of the specified source stream to the specified destination stream. This is a wrapper function for unit testing. .PARAMETER SourceStream The stream to copy from. .PARAMETER DestinationStream The stream to copy to. #> function Copy-FromStreamToStream { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Stream] $SourceStream, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Stream] $DestinationStream ) $null = $SourceStream.CopyTo($DestinationStream) } <# .SYNOPSIS Copies the specified archive entry to the specified destination path. .PARAMETER ArchiveEntry The archive entry to copy to the destination. .PARAMETER DestinationPath The destination file path to copy the archive entry to. #> function Copy-ArchiveEntryToDestination { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.IO.Compression.ZipArchiveEntry] $ArchiveEntry, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $DestinationPath ) $archiveEntryFullName = Get-ArchiveEntryFullName -ArchiveEntry $ArchiveEntry Write-Verbose -Message ($script:localizedData.CopyingArchiveEntryToDestination -f $archiveEntryFullName, $DestinationPath) if (Test-ArchiveEntryIsDirectory -ArchiveEntryName $archiveEntryFullName) { Write-Verbose -Message ($script:localizedData.CreatingArchiveEntryDirectory -f $DestinationPath) $null = New-Item -Path $DestinationPath -ItemType 'Directory' } else { $openStreams = @() try { $archiveEntryStream = Open-ArchiveEntry -ArchiveEntry $ArchiveEntry $openStreams += $archiveEntryStream # The Create mode will create a new file if it does not exist or overwrite the file if it already exists $destinationStreamMode = [System.IO.FileMode]::Create $destinationStream = New-Object -TypeName 'System.IO.FileStream' -ArgumentList @( $DestinationPath, $destinationStreamMode ) $openStreams += $destinationStream Copy-FromStreamToStream -SourceStream $archiveEntryStream -DestinationStream $destinationStream } catch { $errorMessage = $script:localizedData.ErrorCopyingFromArchiveToDestination -f $DestinationPath New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } finally { foreach ($openStream in $openStreams) { Close-Stream -Stream $openStream } } $null = New-Object -TypeName 'System.IO.FileInfo' -ArgumentList @( $DestinationPath ) $updatedTimestamp = Get-ArchiveEntryLastWriteTime -ArchiveEntry $ArchiveEntry $null = Set-ItemProperty -LiteralPath $DestinationPath -Name 'LastWriteTime' -Value $updatedTimestamp $null = Set-ItemProperty -LiteralPath $DestinationPath -Name 'LastAccessTime' -Value $updatedTimestamp $null = Set-ItemProperty -LiteralPath $DestinationPath -Name 'CreationTime' -Value $updatedTimestamp } } <# .SYNOPSIS Expands the archive at the specified source path to the specified destination path. .PARAMETER ArchiveSourcePath The source path of the archive to expand to the specified destination path. .PARAMETER Destination The destination path at which to expand the archive at the specified source path. .PARAMETER Checksum The checksum method to use to determine if a file at the destination already matches a file in the archive. .PARAMETER Force Specifies whether or not to overwrite files that exist at the destination but do not match the file of the same name in the archive based on the specified checksum method. #> function Expand-ArchiveToDestination { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $ArchiveSourcePath, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Destination, [Parameter()] [ValidateSet('SHA-1', 'SHA-256', 'SHA-512', 'CreatedDate', 'ModifiedDate')] [System.String] $Checksum, [Parameter()] [System.Boolean] $Force = $false ) Write-Verbose -Message ($script:localizedData.ExpandingArchiveToDestination -f $ArchiveSourcePath, $Destination) $archive = Open-Archive -Path $ArchiveSourcePath try { $archiveEntries = Get-ArchiveEntries -Archive $archive foreach ($archiveEntry in $archiveEntries) { $archiveEntryFullName = Get-ArchiveEntryFullName -ArchiveEntry $archiveEntry $archiveEntryPathAtDestination = Join-Path -Path $Destination -ChildPath $archiveEntryFullName $archiveEntryIsDirectory = Test-ArchiveEntryIsDirectory -ArchiveEntryName $archiveEntryFullName $archiveEntryItemAtDestination = Get-Item -LiteralPath $archiveEntryPathAtDestination -ErrorAction 'SilentlyContinue' if ($null -eq $archiveEntryItemAtDestination) { Write-Verbose -Message ($script:localizedData.ItemWithArchiveEntryNameDoesNotExist -f $archiveEntryPathAtDestination) if (-not $archiveEntryIsDirectory) { $parentDirectory = Split-Path -Path $archiveEntryPathAtDestination -Parent if (-not (Test-Path -Path $parentDirectory)) { Write-Verbose -Message ($script:localizedData.CreatingParentDirectory -f $parentDirectory) $null = New-Item -Path $parentDirectory -ItemType 'Directory' } } Copy-ArchiveEntryToDestination -ArchiveEntry $archiveEntry -DestinationPath $archiveEntryPathAtDestination } else { Write-Verbose -Message ($script:localizedData.ItemWithArchiveEntryNameExists -f $archiveEntryPathAtDestination) $overwriteArchiveEntry = $true if ($archiveEntryIsDirectory) { $overwriteArchiveEntry = -not ($archiveEntryItemAtDestination -is [System.IO.DirectoryInfo]) } elseif ($archiveEntryItemAtDestination -is [System.IO.FileInfo]) { if ($PSBoundParameters.ContainsKey('Checksum')) { $overwriteArchiveEntry = -not (Test-FileMatchesArchiveEntryByChecksum -File $archiveEntryItemAtDestination -ArchiveEntry $archiveEntry -Checksum $Checksum) } else { $overwriteArchiveEntry = $false } } if ($overwriteArchiveEntry) { if ($Force) { Write-Verbose -Message ($script:localizedData.OverwritingItem -f $archiveEntryPathAtDestination) $null = Remove-Item -LiteralPath $archiveEntryPathAtDestination Copy-ArchiveEntryToDestination -ArchiveEntry $archiveEntry -DestinationPath $archiveEntryPathAtDestination } else { New-InvalidOperationException -Message ($script:localizedData.ForceNotSpecifiedToOverwriteItem -f $archiveEntryPathAtDestination, $archiveEntryFullName) } } } } } finally { Close-Archive -Archive $archive } } <# .SYNOPSIS Removes the specified directory from the specified destination path. .PARAMETER Directory The partial path under the destination path of the directory to remove. .PARAMETER Destination The destination from which to remove the directory. #> function Remove-DirectoryFromDestination { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String[]] $Directory, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Destination ) # Sort-Object requires the use of a pipe to function properly $Directory = $Directory | Sort-Object -Descending -Unique foreach ($directoryToRemove in $Directory) { $directoryPathAtDestination = Join-Path -Path $Destination -ChildPath $directoryToRemove $directoryExists = Test-Path -LiteralPath $directoryPathAtDestination -PathType 'Container' if ($directoryExists) { $directoryChildItems = Get-ChildItem -LiteralPath $directoryPathAtDestination -ErrorAction 'SilentlyContinue' $directoryIsEmpty = $null -eq $directoryChildItems if ($directoryIsEmpty) { Write-Verbose -Message ($script:localizedData.RemovingDirectory -f $directoryPathAtDestination) $null = Remove-Item -LiteralPath $directoryPathAtDestination } else { Write-Verbose -Message ($script:localizedData.DirectoryIsNotEmpty -f $directoryPathAtDestination) } } } } <# .SYNOPSIS Removes the specified archive from the specified destination. .PARAMETER Archive The archive to remove from the specified destination. .PARAMETER Destination The path to the destination to remove the specified archive from. .PARAMETER Checksum The checksum method to use to determine whether a file in the archive matches a file at the destination. If not provided, only the existence of the items in the archive will be checked. #> function Remove-ArchiveFromDestination { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $ArchiveSourcePath, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $Destination, [Parameter()] [ValidateSet('SHA-1', 'SHA-256', 'SHA-512', 'CreatedDate', 'ModifiedDate')] [System.String] $Checksum ) Write-Verbose -Message ($script:localizedData.RemovingArchiveFromDestination -f $Destination) $archive = Open-Archive -Path $ArchiveSourcePath try { $directoriesToRemove = @() $archiveEntries = Get-ArchiveEntries -Archive $archive foreach ($archiveEntry in $archiveEntries) { $archiveEntryFullName = Get-ArchiveEntryFullName -ArchiveEntry $archiveEntry $archiveEntryPathAtDestination = Join-Path -Path $Destination -ChildPath $archiveEntryFullName $archiveEntryIsDirectory = Test-ArchiveEntryIsDirectory -ArchiveEntryName $archiveEntryFullName $itemAtDestination = Get-Item -LiteralPath $archiveEntryPathAtDestination -ErrorAction 'SilentlyContinue' if ($null -eq $itemAtDestination) { Write-Verbose -Message ($script:localizedData.ItemWithArchiveEntryNameDoesNotExist -f $archiveEntryPathAtDestination) } else { Write-Verbose -Message ($script:localizedData.ItemWithArchiveEntryNameExists -f $archiveEntryPathAtDestination) $itemAtDestinationIsDirectory = $itemAtDestination -is [System.IO.DirectoryInfo] $itemAtDestinationIsFile = $itemAtDestination -is [System.IO.FileInfo] $removeArchiveEntry = $false if ($archiveEntryIsDirectory -and $itemAtDestinationIsDirectory) { $removeArchiveEntry = $true $directoriesToRemove += $archiveEntryFullName } elseif ((-not $archiveEntryIsDirectory) -and $itemAtDestinationIsFile) { $removeArchiveEntry = $true if ($PSBoundParameters.ContainsKey('Checksum')) { $removeArchiveEntry = Test-FileMatchesArchiveEntryByChecksum -File $itemAtDestination -ArchiveEntry $archiveEntry -Checksum $Checksum } if ($removeArchiveEntry) { Write-Verbose -Message ($script:localizedData.RemovingFile -f $archiveEntryPathAtDestination) $null = Remove-Item -LiteralPath $archiveEntryPathAtDestination } } else { Write-Verbose -Message ($script:localizedData.CouldNotRemoveItemOfIncorrectType -f $archiveEntryPathAtDestination, $archiveEntryFullName) } if ($removeArchiveEntry) { $parentDirectory = Split-Path -Path $archiveEntryFullName -Parent while (-not [System.String]::IsNullOrEmpty($parentDirectory)) { $directoriesToRemove += $parentDirectory $parentDirectory = Split-Path -Path $parentDirectory -Parent } } } } if ($directoriesToRemove.Count -gt 0) { $null = Remove-DirectoryFromDestination -Directory $directoriesToRemove -Destination $Destination } Write-Verbose -Message ($script:localizedData.ArchiveRemovedFromDestination -f $Destination) } finally { Close-Archive -Archive $archive } } # 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