Get-WifiPassword.psm1
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#requires -version 3 function Get-WifiPassword { [CmdletBinding(DefaultParameterSetName='NoParam')] param ( [parameter(ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true, ParameterSetName='ParamExists')] [string[]]$NetworkName, [switch]$OnlyExisting) begin { $noParam = $PSCmdlet.ParameterSetName -eq 'NoParam' if ($noParam) { $names = netsh wlan show profiles |select-string -Pattern ':\s(?<name>.*)$' | %{$_.Matches.Groups} |? Name -eq name | select -ExpandProperty value } } process { if ($noParam) { foreach ($name in $names) { Get-WifiPasswordInternal -Name $name | ? {-not $OnlyExisting -or ($OnlyExisting -and $_.Password) } } return } $NetworkName | %{ Get-WifiPasswordInternal $_ } } } Export-ModuleMember -Function Get-WifiPassword function Get-WifiPasswordInternal { param([parameter(Mandatory=$true)][string]$Name) $profileStrings = netsh wlan show profiles name="$name" key=clear if ($profileStrings | Select-String 'not found' -Quiet) { Write-Warning "Name $name unexpectedly not found" continue } $profileData = $profileStrings | Out-String if ($profileData -match '(?m)(Security key\s*: Present\s*Key Content\s*: (?<password>.*)$)|(Security key\s*: Absent)') { [pscustomobject]@{Name = $name;Password = $Matches.password} } } |