#
# system_credential.ps1
#
# An array to store credentaials in memory (each object contains key,username,password)
$script:credentialsStore = @()
function New-StoredCredential
{
<#
.SYNOPSIS
Adds a credentials to the in memory credential store.
.DESCRIPTION
A user will be asked to provide a username and password. Credentials will be stored in memory table.
The credentails will be stored as secure string.
You shall call Save-Credentials to save in memory table to file.
.EXAMPLE
New-StoredCredential -Key 'SMTP Credentials' -Message 'Provide a credentials for SMTP server'
#>
[CmdletBinding()]
param (
[parameter(Mandatory=$true)]
[string]$Key,
[parameter()]
[string]$Username,
[parameter()]
[Security.SecureString]$Password = ( new-object SecureString ),
[parameter()]
[string]$Message="Please provide credentials:"
)
$credentialsItem = Get-StoredCredential($Key)
if( $credentialsItem -ne $null )
{
Write-Warning "A key '$Key' already exist!"
return
}
$user = $null
$pwd = $null
if( $Username -eq '' -and $Password.Length -eq 0)
{
$credentials = Get-Credential -Message $Message
$user = $credentials.UserName | ConvertTo-SecureString -AsPlainText -Force | ConvertFrom-SecureString
$pwd = $credentials.Password | ConvertFrom-SecureString
}
else
{
$user = $Username | ConvertTo-SecureString -AsPlainText -Force | ConvertFrom-SecureString
$pwd = $Password | ConvertFrom-SecureString
}
$credentialsItem = New-Object PSObject
$credentialsItem | Add-Member �MemberType NoteProperty �Name Key �Value $Key
$credentialsItem | Add-Member �MemberType NoteProperty �Name Username �Value $user
$credentialsItem | Add-Member �MemberType NoteProperty �Name Password �Value $pwd
$script:credentialsStore += $credentialsItem;
}
function Export-CredentialStore
{
<#
.SYNOPSIS
Saves an in memory credentials table to the CSV file.
.EXAMPLE
Save-CredentialStore -Path 'C:\MyScriptsConfiguration'
#>
[CmdletBinding()]
param (
[parameter(Mandatory=$true)]
[string]$Path
)
$script:credentialsStore | Export-Csv -Path $Path -NoTypeInformation
}
function Import-CredentialStore
{
<#
.SYNOPSIS
Loads credentials from a CSV file and stores credentials in a memory table.
.EXAMPLE
Load-CredentialStore -Path 'C:\MyScriptsConfiguration'
#>
[CmdletBinding()]
param (
[parameter(Mandatory=$true)]
[string]$Path
)
$script:credentialsStore = @()
$script:credentialsStore += Import-Csv -Path $Path
}
function Get-StoredCredential
{
[CmdletBinding()]
param (
[parameter(Mandatory=$true)]
[string]$Key
)
return $script:credentialsStore | Where-Object { $_.Key -eq $Key }
}
function Get-StoredPSCredential
{
[CmdletBinding()]
param (
[parameter(Mandatory=$true)]
[string]$Key
)
$credentials = $script:credentialsStore | Where-Object { $_.Key -eq $Key }
if( $credentials -ne $null)
{
return New-Object System.Management.Automation.PSCredential ( (ConvertTo-PlainText -Secret $credentials.Username), (ConvertTo-SecureString $credentials.Password))
}
return $null;
}
function Test-StoredCredential
{
[CmdletBinding()]
param (
[parameter(Mandatory=$true)]
[string]$Key
)
$credentialsItem = Get-StoredCredential($Key)
if( $credentialsItem -eq $null )
{
return $false
}
return $true
}
function ConvertTo-PlainText
{
<#
.SYNOPSIS
Converts a secure string to the plain text
.EXAMPLE
ConvertTo-PlainText -String 'jsjdakdajskdajsd'
#>
[CmdletBinding()]
param (
[parameter(Mandatory=$true)]
[string]$Secret
)
$secureString = $Secret | ConvertTo-SecureString
$BSTR = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR( $secureString )
return [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)
}
Export-ModuleMember -Function ConvertTo-PlainText
Export-ModuleMember -Function New-StoredCredential
Export-ModuleMember -Function Test-StoredCredential
Export-ModuleMember -Function Get-StoredCredential
Export-ModuleMember -Function Import-CredentialStore
Export-ModuleMember -Function Export-CredentialStore
Export-ModuleMember -Function Get-StoredPSCredential
system-credential.ps1
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