Get-ConfigData.ps1
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<#
.SYNOPSIS Get data from a JSON config file .PARAMETER Name Name of the config data to get. Supports tab completion .PARAMETER AsSecureString Return the encrypted data as a SecureString .PARAMETER Decrypt Return encrypted data in clear text .PARAMETER Quiet Don't kick out a Warning message if not found .PARAMETER Path Path to the config file .EXAMPLE Get-ConfigData Key .OUTPUTS Object from config file, or $null #> function Get-ConfigData { [CmdletBinding(PositionalBinding=$false)] # PositionalBinding=$false allows us to use dynamic Name w/o -Name [OutputType([string],[PSCustomObject])] param( [switch] $AsSecureString, [switch] $Decrypt, [switch] $Quiet, [switch] $SkipNameValidate, [string] $Path ) dynamicParam { makeDynamicParam -ParameterName "Name" -ValidateSetScript { if ( !((Test-Path variable:NoNameValidate) -and $SkipNameValidate)) { if (!((Test-Path variable:Path) -and $Path)) { $Path = $null # can't pass in undefined path } Find-ConfigData -Path $Path } } -Mandatory -ValueFromPipeline } process { Write-Verbose "Path is $Path" Set-StrictMode -Version Latest $Name = $psboundparameters["Name"] $Path = Get-ConfigDataPath $Path if ( -not (Test-Path $Path -PathType Leaf)) { throw "Path $Path not found" } Write-Verbose "Getting $Name from $Path" $object = Get-Content $path -Raw | ConvertFrom-Json $value = $null $member = Get-Member -InputObject $object -MemberType NoteProperty | Where-Object Name -eq $Name | Select-Object -ExpandProperty name if ( !$member ) { if ( !$Quiet ) { Write-Warning "Didn't find value named $name in $path" } } else { $value = $object.$member if ( $PSVersionTable.PSVersion.Major -gt 5 -and -not $IsWindows ) { $decryptedtString = $false # Core 2.0 doesn't support encrypt/decrypt if ( $AsSecureString ) { Write-Warning "AsSecureString not supported in PS Core" return "" } } $value = ConvertFrom-Json $value $isSecureString = [bool](Get-Member -InputObject $value -Name "Secure-String" -MemberType NoteProperty ) $isEncryptedObject = [bool](Get-Member -InputObject $value -Name "Encrypted-Object" -MemberType NoteProperty ) $isEncryptedString = [bool](Get-Member -InputObject $value -Name "Encrypted-String" -MemberType NoteProperty ) Write-Verbose "isSecureString = $isSecureString isEncryptedObject = $isEncryptedObject" if ( $isSecureString -or $isEncryptedObject -or $isEncryptedString ) { if ( $isEncryptedObject ) { $value = $value."Encrypted-Object" } elseif ( $isEncryptedString ) { $value = $value."Encrypted-String" } else { $value = $value."Secure-String" } Write-Verbose "Value is $value" $secureString = $value | ConvertTo-SecureString if ( $Decrypt ) { $decryptedtString = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto([System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($secureString)) if ( $isEncryptedObject ) { $value = ConvertFrom-Json $decryptedtString } else { $value = $decryptedtString } } else { $value = $secureString } } $value } } } New-Alias -Name gcd -Value Get-ConfigData |