PowerShell/scripts/check-credentials.ps1

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2024-01-15 10:52:40 +01:00
<#
.SYNOPSIS
Checks credentials
.DESCRIPTION
This PowerShell script asks for credentials and checks them against saved ones ("$HOME\my.credentials" by default).
.PARAMETER TargetFile
Specifies the target file ("$HOME\my.credentials" by default)
.EXAMPLE
PS> ./check-credentials.ps1
Enter username and password, please.
Your credentials are correct.
.LINK
https://github.com/fleschutz/PowerShell
.NOTES
Author: Markus Fleschutz | License: CC0
#>
param([string]$TargetFile = "$HOME\my.credentials")
try {
Write-Host "Enter username and password, please." -foreground red
$credsFromUser = Get-Credential
$secureString = Get-Content "$TargetFile" | ConvertTo-SecureString
$credsFromFile = New-Object System.Management.Automation.PSCredential($credsFromUser.UserName, $secureString)
if ($credsFromUser.UserName -ne $credsFromFile.UserName) { throw "Sorry, your username is wrong." }
$pw1 = [Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToBSTR($credsFromUser.Password))
$pw2 = [Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToBSTR($credsFromFile.Password))
if ($pw1 -cne $pw2) { throw "Sorry, your password is wrong." }
"✔️ Your credentials are correct."
exit 0 # success
} catch {
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
exit 1
}