Powershell 'ConvertTo-Mask' function to Python function

Question

As part of migrating code base from PowerShell to Python, I need to covert the 'ConvertTo-Mask' function (available on PowerShell GET).

PowerShell function:

Function ConvertTo-Mask {
    [CmdLetBinding()]
    Param(
        [Parameter(Mandatory = $True, Position = 0, ValueFromPipeline = $True)]
        [Alias("Length")]
        [ValidateRange(0, 32)]
        $MaskLength
    )
     
    Process {
        Return ConvertTo-DottedDecimalIP ([Convert]::ToUInt32($(("1" * $MaskLength).PadRight(32, "0")), 2))
    }
}

My Python Implementation:

import ctypes

def int32_to_uint32(i):
    return ctypes.c_uint32(i).value

data = int(("1"*14).ljust(32,"0"))
print (data)
result = int32_to_uint32(data)
print (result)

I am having difficulty with the '[Convert]::ToUInt32' part. If I give '$MaskLength = 14', the PowerShell function returns '4294705152'. But the python implementation returns '1119617024'.

Does anyone know where I am making a mistake?

I used your code and I get an error: "Message=name 'uint32' is not defined" — Manjunath Rao
– Manjunath Rao, Commented Mar 19, 2021 at 10:54
Then perhaps How to convert signed to unsigned integer in python can be of help? — Theo
– Theo, Commented Mar 19, 2021 at 11:01

Manjunath Rao · Accepted Answer · 2021-03-19 12:19:52Z

0

using int function, solved my problem. In my case, I had to convert from base 2.

Syntax: int(String,Base)

answered Mar 19, 2021 at 12:19

Manjunath Rao

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