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A repository of PowerShell Scripts to automate a variety of IT related maintenance tasks.

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Get-PublicDnsRecord.ps1

Description

@GitHub Copilot - Welcome @BanterBoy, I’m your Copilot and I’m here to help you get things done faster. I can identify issues, explain and even improve code.

You can ask generic questions, but what I’m really good at is helping you with your code. For example:

Generate unit tests for my code Explain the selected code Propose a fix for the bugs in my code If you want to learn more about my capabilities and limitations, check out the Copilot documentation.

I’m powered by AI, so surprises and mistakes are possible. Make sure to verify any generated code or suggestions, and share feedback so that we can learn and improve.

@BanterBoy: - Explain what the script does and why it is useful.

@GitHub Copilot -

Script

Function Get-PublicDnsRecord {
    <#
    .SYNOPSIS
        Make some DNS query based on Stat DNS.
    .DESCRIPTION
        Use Invoke-WebRequest on Stat DNS to resolve DNS query.
    .EXAMPLE
        Get-PublicDnsRecord -DomaineNAme "ItForDummies.net" -DnsRecordType A,MX
    .EXAMPLE
        Get-PublicDnsRecord -DomaineNAme "www.valbox.fr" -DnsRecordType A,MX
    .PARAMETER DomainName
        Domain name to query.
    .PARAMETER DnsRecordType
        DNS type to query.
    .INPUTS
    .OUTPUTS
    .NOTES
    .LINK
    #>
    Param(
        [Parameter(Mandatory = $true,
            HelpMessage = 'DNS domain name to query.',
            Position = 1)]
        [String]$DomainName,

        [Parameter(Mandatory = $true,
            HelpMessage = 'DNS record type to query.',
            Position = 2)]
        [ValidateSet('A', 'AAAA', 'CERT', 'CNAME', 'DHCIP', 'DLV', 'DNAME', 'DNSKEY', 'DS', 'HINFO', 'HIP', 'IPSECKEY', 'KX', 'LOC', 'MX', 'NAPTR', 'NS', 'NSEC', 'NSEC3', 'NSEC3PARAM', 'OPT', 'PTR', 'RRSIG', 'SOA', 'SPF', 'SRV', 'SSHFP', 'TA', 'TALINK', 'TLSA', 'TXT')]
        [String[]]$DnsRecordType
    )

    DynamicParam {
        $AttribColl = New-Object -TypeName System.Collections.ObjectModel.Collection[System.Attribute]
        $ParamAttrib = New-Object -TypeName System.Management.Automation.ParameterAttribute
        $ParamAttrib.Mandatory = $false
        $ParamAttrib.ParameterSetName = '__AllParameterSets'
        $ParamAttrib.ValueFromPipeline = $false
        $ParamAttrib.ValueFromPipelineByPropertyName = $false
        $AttribColl.Add($ParamAttrib)
        $AttribColl.Add((New-Object -TypeName System.Management.Automation.ValidateSetAttribute -ArgumentList ((Invoke-WebRequest -Uri 'http://www.dns-lg.com/nodes.json' | Select-Object -ExpandProperty Content | ConvertFrom-Json | Select-Object -ExpandProperty nodes | Select-Object -ExpandProperty name))))
        $RuntimeParam = New-Object -TypeName System.Management.Automation.RuntimeDefinedParameter -ArgumentList ('Node', [string], $AttribColl)
        $RuntimeParamDic = New-Object -TypeName System.Management.Automation.RuntimeDefinedParameterDictionary
        $RuntimeParamDic.Add('Node', $RuntimeParam)
        $RuntimeParamDic
    }

    Begin {
        $PsBoundParameters.GetEnumerator() | ForEach-Object -Process { New-Variable -Name $_.Key -Value $_.Value -ErrorAction 'SilentlyContinue' }
        if (!$Node) { $Node = Invoke-WebRequest -Uri 'http://www.dns-lg.com/nodes.json' | Select-Object -ExpandProperty Content | ConvertFrom-Json | Select-Object -ExpandProperty nodes | Select-Object -ExpandProperty name | Get-Random }
    }
    Process {
        ForEach ($Record in $DnsRecordType) {
            Try {
                $WebUrl = 'http://www.dns-lg.com/{0}/{1}/{2}' -f $Node, $DomainName, $Record

                Write-Verbose -Message "Constructed URL for query is $WebUrl."

                $WebData = Invoke-WebRequest -Uri $WebUrl -ErrorAction Stop | Select-Object -ExpandProperty Content | ConvertFrom-Json | Select-Object -ExpandProperty answer
                $WebData | % {
                    New-Object -TypeName PSObject -Property @{
                        'Name'   = $_.name
                        'Type'   = $_.type
                        'Target' = $_.rdata
                        'Node'   = $Node
                    }
                }
            }
            catch {
                Write-Warning -Message $_
                New-Object -TypeName PSObject -Property @{
                    'Name'   = $DomainName
                    'Type'   = $Record
                    'Target' = ($_[0].ErrorDetails.Message -split '"')[-2]
                    'Node'   = $Node
                }
            }
        }
    }
    End {}
}

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