Public/Get-ALHSavedCredential.ps1
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<#PSScriptInfo
.VERSION 1.2.0 .GUID 899d0d26-7c9e-4356-a846-bb1f6ee7b579 .AUTHOR Dieter Koch .COMPANYNAME .COPYRIGHT (c) 2021-2023 Dieter Koch .TAGS .LICENSEURI https://github.com/admins-little-helper/ALH/blob/main/LICENSE .PROJECTURI https://github.com/admins-little-helper/ALH .ICONURI .EXTERNALMODULEDEPENDENCIES .REQUIREDSCRIPTS .EXTERNALSCRIPTDEPENDENCIES .RELEASENOTES 1.0.0 Initial release 1.1.0 Cleaned up code 1.2.0 Fixed issue with variable names. Added validatescript for parameter 'Path'. Added parameter -AsJSon. Added parameter -FilePath. Redesign and code cleanup. #> <# .DESCRIPTION Contains a function to retrieve credentials from a text file which were saved there as securestring. #> function Get-ALHSavedCredential { <# .SYNOPSIS Retrieve saved credentials (username and secure string password) from a text file. .DESCRIPTION Retrieve saved credentials (username and secure string password) from files. .PARAMETER Path Path to search in for credential files. .PARAMETER FileNamePrefix Filename prefix to use for credential files. .PARAMETER AsJson If specified, the output will be saved in a json file, instead of a text file. .EXAMPLE Get-ALHSavedCredential -Path C:\Admin\Credentials -FileNamePrefix "CredForApp1" Get credentials for App1 from text files (one for username, another for the password). .EXAMPLE Get-ALHSavedCredential -FilePath C:\Admin\Credentials\MyCredentials.json Get credentials from a JSON file. .INPUTS Nothing .OUTPUTS PSCredential .NOTES Author: Dieter Koch Email: diko@admins-little-helper.de .LINK https://github.com/admins-little-helper/ALH/blob/main/Help/Get-ALHSavedCredential.txt #> [OutputType([PSCredential])] [CmdletBinding(DefaultParameterSetName = "default")] param ( [Parameter(Mandatory, ParameterSetName = "Path")] [ValidateScript({ # Check if the given path is valid. if (-not (Test-Path -Path $_) ) { throw "Folder does not exist." } # Check if the given path is a directory. if (-not (Test-Path -Path $_ -PathType Container) ) { throw "The Path argument must be a folder. File paths are not allowed." } return $true })] [System.IO.FileInfo] $Path, [Parameter(Mandatory, ParameterSetName = "FilePath")] [ValidateScript({ # Check if the given path is valid. if (-not (Test-Path -Path $_) ) { throw "File or folder does not exist." } # Check if the given path is a file. if (Test-Path -Path $_ -PathType Container) { throw "The Path argument must be a file. The given path is a folder." } # Check if the given file is not a json file. if ( -not ([IO.Path]::GetExtension($_) -eq ".json")) { throw "The Path argument must be a file. The given path is a folder." } return $true })] [System.IO.FileInfo] $FilePath, [Parameter(ParameterSetName = "Path")] [ValidateNotNull()] [String] $FileNamePrefix, [Parameter(ParameterSetName = "Path")] [Switch] $AsJson ) if ($PSCmdlet.ParameterSetName -eq "FilePath") { $FullPathFilCredential = $FilePath [switch]$AsJson = $true } if ($AsJson.IsPresent) { if ($PSCmdlet.ParameterSetName -eq "Path") { $FullPathFilCredential = Join-Path -Path $Path -ChildPath "$($FileNamePrefix)_Credential.json" } $FileList = @($FullPathFilCredential) } else { $FullPathFileIdentity = Join-Path -Path $Path -ChildPath "$($FileNamePrefix)_Identity.txt" $FullPathFileSecret = Join-Path -Path $Path -ChildPath "$($FileNamePrefix)_Secret.txt" $FileList = @($FullPathFileIdentity, $FullPathFileSecret) } $IsFileMissing = $false foreach ($File in $FileList) { if (-not (Test-Path -Path $File)) { Write-Error -Message "File not found or accessible. FullPath: $File" $IsFileMissing = $true } } if (-not ($IsFileMissing)) { if ($AsJson.IsPresent) { $MyCredentialObject = Get-Content -Path $FullPathFilCredential -Encoding UTF8 | ConvertFrom-Json $Credentials = New-Object System.Management.Automation.PSCredential ($MyCredentialObject.Username, $($MyCredentialObject.Password | ConvertTo-SecureString)) } else { Write-Verbose -Message "Reading file content of $FullPathFileIdentity" $Identity = Get-Content "$FullPathFileIdentity" Write-Verbose -Message "Reading file content of $FullPathFileSecret" $Secret = Get-Content "$FullPathFileSecret" | ConvertTo-SecureString $Credentials = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList ($Identity, $Secret) } return $Credentials } else { return $null } } #region EndOfScript <# ################################################################################ ################################################################################ # # ______ _ __ _____ _ _ # | ____| | | / _| / ____| (_) | | # | |__ _ __ __| | ___ | |_ | (___ ___ _ __ _ _ __ | |_ # | __| | '_ \ / _` | / _ \| _| \___ \ / __| '__| | '_ \| __| # | |____| | | | (_| | | (_) | | ____) | (__| | | | |_) | |_ # |______|_| |_|\__,_| \___/|_| |_____/ \___|_| |_| .__/ \__| # | | # |_| ################################################################################ ################################################################################ # created with help of http://patorjk.com/software/taag/ #> #endregion |