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Merge pull request #13 from Badgerati/2fa-attrs
Adds support for 2FA, attributes, running JavaScript, and fix clicking elements
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| function Get-Monocle2FAInterval | ||
| { | ||
| [CmdletBinding()] | ||
| param( | ||
| [Parameter(Mandatory=$true)] | ||
| [DateTime] | ||
| $DateTime | ||
| ) | ||
|
|
||
| # convert to utc | ||
| $DateTime = $DateTime.ToUniversalTime() | ||
|
|
||
| # get time interval for the date | ||
| $secondsPerInterval = 30 | ||
| $epochTime = Get-Date "01/01/1970 00:00:00" | ||
| $secondsSinceEpochTime = (New-TimeSpan -Start $epochTime -End $DateTime).TotalSeconds | ||
|
|
||
| return [int64][math]::Floor($secondsSinceEpochTime / $secondsPerInterval) | ||
| } | ||
|
|
||
| function Get-Monocle2FAPin | ||
| { | ||
| [CmdletBinding()] | ||
| param( | ||
| [Parameter(Mandatory=$true)] | ||
| [string] | ||
| $Secret, | ||
|
|
||
| [Parameter(Mandatory=$true)] | ||
| [long] | ||
| $Interval | ||
| ) | ||
|
|
||
| # convert the parameters to bytes | ||
| $secretAsBytes = Convert-Monocle2FASecretToBytes -Secret $Secret | ||
| $timeBytes = Convert-Monocle2FAIntervalToBytes -Interval $Interval | ||
|
|
||
| # do the HMAC calculation with the default SHA1 | ||
| $hmacGen = [Security.Cryptography.HMACSHA1]::new($secretAsBytes) | ||
| $hash = $hmacGen.ComputeHash($timeBytes) | ||
|
|
||
| # take half the last byte | ||
| $offset = ($hash[$hash.Length - 1] -band 0xF) | ||
|
|
||
| # use it as an index into the hash bytes and take 4 bytes from there, big-endian needed | ||
| $fourBytes = $hash[$offset..($offset + 3)] | ||
| if ([BitConverter]::IsLittleEndian) { | ||
| [array]::Reverse($fourBytes) | ||
| } | ||
|
|
||
| # remove the most significant bit | ||
| $num = ([BitConverter]::ToInt32($fourBytes, 0) -band 0x7FFFFFFF) | ||
| return ($num % 1000000).ToString().PadLeft(6, '0') | ||
| } | ||
|
|
||
| function Convert-Monocle2FASecretToBytes | ||
| { | ||
| [CmdletBinding()] | ||
| param( | ||
| [Parameter(Mandatory=$true)] | ||
| [string] | ||
| $Secret | ||
| ) | ||
|
|
||
| $Base32Charset = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567' | ||
|
|
||
| # convert the secret from BASE32 to a byte array via a BigInteger so we can use its bit-shifting support | ||
| $bigInteger = [Numerics.BigInteger]::Zero | ||
| foreach ($char in ($secret.ToUpper() -replace '[^A-Z2-7]').GetEnumerator()) { | ||
| $bigInteger = (($bigInteger -shl 5) -bor ($Base32Charset.IndexOf($char))) | ||
| } | ||
|
|
||
| [byte[]]$secretAsBytes = $bigInteger.ToByteArray() | ||
|
|
||
| # BigInteger sometimes adds a 0 byte to the end, if it happens, we need to remove it | ||
| if ($secretAsBytes[-1] -eq 0) { | ||
| $secretAsBytes = $secretAsBytes[0..($secretAsBytes.Count - 2)] | ||
| } | ||
|
|
||
| # BigInteger stores bytes in Little-Endian order, but we need them in Big-Endian order. | ||
| [array]::Reverse($secretAsBytes) | ||
| return $secretAsBytes | ||
| } | ||
|
|
||
| function Convert-Monocle2FAIntervalToBytes | ||
| { | ||
| [CmdletBinding()] | ||
| param( | ||
| [Parameter(Mandatory=$true)] | ||
| [long] | ||
| $Interval | ||
| ) | ||
|
|
||
| $timeBytes = [BitConverter]::GetBytes($Interval) | ||
| if ([BitConverter]::IsLittleEndian) { | ||
| [array]::Reverse($timeBytes) | ||
| } | ||
|
|
||
| return $timeBytes | ||
| } |
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