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Remove bitwise operators, make PowerShell 2.0 compliant #33

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Remove bitwise operators, make PowerShell 2.0 compliant #33

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33 changes: 30 additions & 3 deletions PowerUpSQL.ps1
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Original file line number Diff line number Diff line change
Expand Up @@ -25242,16 +25242,43 @@ function Test-Subnet ([string]$cidr, [string]$ip)
{
$network, [int]$subnetlen = $cidr.Split('/')
$a = [uint32[]]$network.split('.')
[uint32] $unetwork = ($a[0] -shl 24) + ($a[1] -shl 16) + ($a[2] -shl 8) + $a[3]
[uint32] $unetwork = (Convert-BitShift $a[0] -Left 24) + (Convert-BitShift $a[1] -Left 16) + (Convert-BitShift $a[2] -Left 8) + $a[3]

$mask = (-bnot [uint32]0) -shl (32 - $subnetlen)
$mask = Convert-BitShift (-bnot [uint32]0) -Left (32 - $subnetlen)

$a = [uint32[]]$ip.split('.')
[uint32] $uip = ($a[0] -shl 24) + ($a[1] -shl 16) + ($a[2] -shl 8) + $a[3]
[uint32] $uip = (Convert-BitShift $a[0] -Left 24) + (Convert-BitShift $a[1] -Left 16) + (Convert-BitShift $a[2] -Left 8) + $a[3]

$unetwork -eq ($mask -band $uip)
}

# Source: https://stackoverflow.com/questions/35116636/bit-shifting-in-powershell-2-0
function Convert-BitShift {
param (
[Parameter(Position = 0, Mandatory = $True)]
[int] $Number,

[Parameter(ParameterSetName = 'Left', Mandatory = $False)]
[int] $Left,

[Parameter(ParameterSetName = 'Right', Mandatory = $False)]
[int] $Right
)

$shift = 0
if ($PSCmdlet.ParameterSetName -eq 'Left')
{
$shift = $Left
}
else
{
$shift = -$Right
}

return [math]::Floor($Number * [math]::Pow(2,$shift))
}



#endregion

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