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Get-Whois.psm1
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Get-Whois.psm1
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#Requires -Version 5.1
<#
.SYNOPSIS
Domain and IP Whois Module for PowerShell
.DESCRIPTION
Domain and IP Whois Module for PowerShell
.NOTES
Cam Murray
cam@camm.id.au
############################################################################
This program is free software: you can redistribute it and/or modify it under the terms of
the GNU General Public License as published by the Free Software Foundation, either version
3 of the License. This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program.
If not, see <https://www.gnu.org/licenses/gpl-3.0.en.html>.
############################################################################
.LINK
about_functions_advanced
#>
Function Get-RawWhoisData
{
[CmdletBinding()]
param (
[Parameter()]
[String]
$Server,
[Int]
$Port = 43,
$Target
)
try
{
$Socket = New-Object System.Net.Sockets.TcpClient( $Server, $port )
}
catch
{
Throw "Cannot connect to $($Server) on port $($Port)"
}
$stream = $socket.GetStream( )
$writer = New-Object System.IO.StreamWriter( $stream )
$buffer = New-Object System.Byte[] 1024
$encoding = New-Object System.Text.AsciiEncoding
# Send the request
$writer.WriteLine($Target)
$writer.Flush()
Start-Sleep 1
# Receive the response
while( $stream.DataAvailable )
{
$read = $stream.Read( $buffer, 0, 1024 )
$encoding.GetString( $buffer, 0, $read )
}
# Close off
if( $writer ) { $writer.Close( ) }
if( $stream ) { $stream.Close( ) }
}
Function Get-Whois
{
[CmdletBinding()]
param (
[Parameter(Position=0,Mandatory=$True)]
$Target,
[String]
$Server="whois.iana.org",
[Int]
$Port = 43,
[Switch]
$Referred
)
# Get the raw unparsed whois results and split it by new lines
$RawData = (Get-RawWhoisData -Server $Server -Port $Port -Target $Target).Split([Environment]::NewLine)
# For returning the results
$Result = New-Object -TypeName PSObject
$Object = New-Object -TypeName PSObject
$ObjectName = $Null
ForEach($Line in $RawData)
{
# Some whois servers end with a comment section like this >>> Last update of whois database: xxxxx-xxxx-xxxx <<<
If($Line -match "^>>>.*<<<$")
{
# It's the end, so stop parsing
break
}
# Determine if is a comment line
if($Line -notmatch "^%")
{
# Determine if this is a field or a start of a segment
if($Line -match "(^.*?):(.*)$")
{
# Get the field for the first match,
$Field = $Matches[1].Replace(" ","").Trim()
$FieldValue = $Matches[2].Trim()
# Is this the first, then its the start of a new object
If($Null -eq $ObjectName)
{
$ObjectName = $Field
}
# Determine if the FieldValue appears to be a DateTime
If($FieldValue -match "^\d\d\d\d-\d\d-\d\d")
{
$OldValue = $FieldValue
try {
$FieldValue = [DateTime]::Parse($OldValue)
}
catch {
# Fail by setting it back
$FieldValue = $OldValue
}
}
# This is a field
# Determine if already exists (if so concat the results), if not it's a new property
if($Field -ne "")
{
If($null -ne $Object.$Field)
{
$Object.$Field += $FieldValue
}
else
{
$Object | Add-Member -NotePropertyName $Field -NotePropertyValue $FieldValue
}
}
}
else
{
# This is the end of a object
# Determine if there are any fields in this object and if so, add it to the Result object and then clear the object.
If(@(($Object | Get-member) | Where-Object {$_.MemberType -eq "NoteProperty"}).Count -gt 0)
{
# Is this a single property object, avoid duplication of the name
If(@(($Object | Get-member) | Where-Object {$_.MemberType -eq "NoteProperty"}).Count -eq 1)
{
$Object = $Object.$ObjectName
}
# Add to the returning object
# First determine if there is already an entry under this name
If($Null -ne $Result.$ObjectName)
{
# Determine if already an array
If($Result.$ObjectName -is [Array])
{
# Add to the existing array
$Result.$ObjectName += $Object
}
else
{
# Recast as an array, and re-add object, and new object
$OldObject = $Result.$ObjectName
$Result.$ObjectName = @()
$Result.$ObjectName += $OldObject
$Result.$ObjectName += $Object
}
}
else
{
# This is a new object name
$Result | Add-Member -NotePropertyName $ObjectName -NotePropertyValue $Object
}
# Clear the object for the next one
$ObjectName = $Null
$Object = New-Object -TypeName psobject
}
}
}
}
# Determine if there is a referer
If($null -ne $Result.refer -or $null -ne $Result.whois)
{
# Ensure that we're not already referred (to stop a loop)
If(!$Referred)
{
# If refer exists use that as the refer server, then second preference use whois. I'm not sure if theres a right order, but this sounds right
if($null -ne $Result.refer)
{
$ReferServer = $Result.refer
} elseif($null -ne $Result.whois)
{
$ReferServer = $Result.whois
}
$Result = Get-Whois -Server $ReferServer -Target $Target -Referred
}
else
{
# It appears we are referred twice, this could cause a loop.
Throw("Whois has been referred twice, meaning there's a possible loop. Not continuing.")
}
}
Return $Result
}