Plugins/GoDaddy.ps1

function Get-CurrentPluginType { 'dns-01' }

function Add-DnsTxt {
    [CmdletBinding(DefaultParameterSetName='Secure')]
    param(
        [Parameter(Mandatory, Position = 0)]
        [string]$RecordName,
        [Parameter(Mandatory, Position = 1)]
        [string]$TxtValue,
        [Parameter(Mandatory, Position = 2)]
        [string]$GDKey,
        [Parameter(ParameterSetName='Secure', Mandatory, Position = 3)]
        [securestring]$GDSecretSecure,
        [Parameter(ParameterSetName='DeprecatedInsecure', Mandatory, Position = 3)]
        [string]$GDSecret,
        [Parameter(Position = 4)]
        [string]$GDCustomerId,
        [Parameter(Mandatory = $false)]
        [switch]$GDUseOTE,
        [Parameter(ValueFromRemainingArguments)]
        $ExtraParams
    )

    # GoDaddy has a consumer facing v1 API that doesn't require a customer ID and a newer v2 API that does.
    # The v1 API doesn't appear to be deprecated, so we'll default to that if a customer ID isn't provided.
    # The v2 API has the same endpoints for managing records and we'll use that if a customer ID is provided.
    $apiRoot = "https://api.godaddy.com/v1/domains"
    if (-not $GDCustomerId -and $GDUseOTE) {
        $apiRoot = "https://api.ote-godaddy.com/v1/domains"
    }
    elseif ($GDCustomerId -and -not $GDUseOTE) {
        $apiRoot = "https://api.godaddy.com/v2/customers/$GDCustomerId/domains"
    }
    elseif ($GDCustomerId -and $GDUseOTE) {
        $apiRoot = "https://api.ote-godaddy.com/v2/customers/$GDCustomerId/domains"
    }

    # grab the plain text secret if necessary
    if ('Secure' -eq $PSCmdlet.ParameterSetName) {
        $GDSecret = [pscredential]::new('a',$GDSecretSecure).GetNetworkCredential().Password
    }

    # build the common parameters for all API calls
    $commonParams = @{
        Headers = @{
            Authorization = "sso-key $($GDKey):$($GDSecret)"
        }
        ErrorAction = 'Stop'
        Verbose = $false
        Debug = $false
    } + $script:UseBasic

    if (-not ($zone = Find-GDZone $RecordName $commonParams $apiRoot)) {
        throw "Unable to find matching zone for $RecordName."
    }
    $recShort = $RecordName -ireplace "\.?$([regex]::Escape($zone.TrimEnd('.')))$",''
    if ($recShort -eq '') { $recShort = '@' }

    # Get a list of existing TXT records for this record name
    try {
        $queryParams = @{
            Uri = "$apiRoot/$zone/records/TXT/$recShort"
        } + $commonParams
        Write-Debug "GET $($queryParams.Uri)"
        $recs = Invoke-RestMethod @queryParams
    } catch { throw }

    if (-not $recs -or $TxtValue -notin $recs.data) {
        # For some odd reason, the GoDaddy API doesn't have a method to add a single
        # record. The closest we can get is re-setting the set of records that match
        # a particular Type and Name. So we need to add our new record to the current
        # set of results and send that.

        # filter out the empty record that may be leftover from a previous removal
        $recs = @($recs | Where-Object { $_.data -ne '' })

        if (!$recs -or $recs.Count -eq 0) {
            # Build the new record set from scratch
            $bodyJson = ConvertTo-Json @(@{data=$TxtValue;ttl=600}) -Compress
        } else {
            # add the new record and build the body
            $recsNew = $recs + ([pscustomobject]@{data=$TxtValue;ttl=600})
            $bodyJson = ConvertTo-Json @($recsNew) -Compress
        }

        try {
            Write-Verbose "Adding a new TXT record for $recShort with value $TxtValue"
            $queryParams = @{
                Uri = "$apiRoot/$zone/records/TXT/$recShort"
                Method = 'Put'
                Body = $bodyJson
                ContentType = 'application/json'
            } + $commonParams
            Write-Debug "PUT $($queryParams.Uri)`n$bodyJson"
            Invoke-RestMethod @queryParams | Out-Null
        } catch { throw }

    } else {
        Write-Debug "Record $RecordName already contains $TxtValue. Nothing to do."
    }


    <#
    .SYNOPSIS
        Add a DNS TXT record to GoDaddy.

    .DESCRIPTION
        Add a DNS TXT record to GoDaddy.

    .PARAMETER RecordName
        The fully qualified name of the TXT record.

    .PARAMETER TxtValue
        The value of the TXT record.

    .PARAMETER GDKey
        The GoDaddy API Key.

    .PARAMETER GDSecretSecure
        The GoDaddy API Secret.

    .PARAMETER GDSecret
        (DEPRECATED) The GoDaddy API Secret.

    .PARAMETER GDCustomerId
        The GoDaddy Customer ID. This is only required for the v2 API which is used for some reseller accounts. If not specified, the plugin will attempt to use the v1 API which doesn't require a customer ID.

    .PARAMETER GDUseOTE
        If specified, use the GoDaddy OTE test environment rather than the production environment.

    .PARAMETER ExtraParams
        This parameter can be ignored and is only used to prevent errors when splatting with more parameters than this function supports.

    .EXAMPLE
        $secret = Read-Host 'API Secret' -AsSecureString
        Add-DnsTxt '_acme-challenge.example.com' 'txt-value' 'key' $secret

        Adds a TXT record for the specified site with the specified value.
    #>

}

function Remove-DnsTxt {
    [CmdletBinding(DefaultParameterSetName='Secure')]
    param(
        [Parameter(Mandatory, Position = 0)]
        [string]$RecordName,
        [Parameter(Mandatory, Position = 1)]
        [string]$TxtValue,
        [Parameter(Mandatory, Position = 2)]
        [string]$GDKey,
        [Parameter(ParameterSetName='Secure', Mandatory, Position = 3)]
        [securestring]$GDSecretSecure,
        [Parameter(ParameterSetName='DeprecatedInsecure', Mandatory, Position = 3)]
        [string]$GDSecret,
        [Parameter(Position = 4)]
        [string]$GDCustomerId,
        [Parameter(Mandatory = $false)]
        [switch]$GDUseOTE,
        [Parameter(ValueFromRemainingArguments)]
        $ExtraParams
    )

    # GoDaddy has a consumer facing v1 API that doesn't require a customer ID and a newer v2 API that does.
    # The v1 API doesn't appear to be deprecated, so we'll default to that if a customer ID isn't provided.
    # The v2 API has the same endpoints for managing records and we'll use that if a customer ID is provided.
    $apiRoot = "https://api.godaddy.com/v1/domains"
    if (-not $GDCustomerId -and $GDUseOTE) {
        $apiRoot = "https://api.ote-godaddy.com/v1/domains"
    }
    elseif ($GDCustomerId -and -not $GDUseOTE) {
        $apiRoot = "https://api.godaddy.com/v2/customers/$GDCustomerId/domains"
    }
    elseif ($GDCustomerId -and $GDUseOTE) {
        $apiRoot = "https://api.ote-godaddy.com/v2/customers/$GDCustomerId/domains"
    }

    # grab the plain text secret if necessary
    if ('Secure' -eq $PSCmdlet.ParameterSetName) {
        $GDSecret = [pscredential]::new('a',$GDSecretSecure).GetNetworkCredential().Password
    }

    # build the common parameters for all API calls
    $commonParams = @{
        Headers = @{
            Authorization = "sso-key $($GDKey):$($GDSecret)"
        }
        ErrorAction = 'Stop'
        Verbose = $false
        Debug = $false
    } + $script:UseBasic

    if (-not ($zone = Find-GDZone $RecordName $commonParams $apiRoot)) {
        throw "Unable to find matching zone for $RecordName."
    }
    $recShort = $RecordName -ireplace "\.?$([regex]::Escape($zone.TrimEnd('.')))$",''
    if ($recShort -eq '') { $recShort = '@' }

    # Get a list of existing TXT records for this record name
    try {
        $queryParams = @{
            Uri = "$apiRoot/$zone/records/TXT/$recShort"
        } + $commonParams
        Write-Debug "GET $($queryParams.Uri)"
        $recs = Invoke-RestMethod @queryParams
    } catch { throw }

    if (-not $recs -or $TxtValue -notin $recs.data) {
        Write-Debug "Record $RecordName with value $TxtValue doesn't exist. Nothing to do."
    } else {

        if ($recs.Count -le 1) {
            # It's the last one, so delete the whole record.
            try {
                Write-Verbose "Removing a TXT record for $recShort"
                $queryParams = @{
                    Uri = "$apiRoot/$zone/records/TXT/$recShort"
                    Method = 'Delete'
                } + $commonParams
                Write-Debug "DELETE $($queryParams.Uri)"
                Invoke-RestMethod @queryParams | Out-Null
            } catch { throw }

        } else {
            # filter the record we want to delete and build the body
            $recsNew = $recs | Where-Object { $_.data -ne $TxtValue }
            $bodyJson = ConvertTo-Json @($recsNew) -Compress

            try {
                Write-Verbose "Removing a TXT record for $recShort with value $TxtValue"
                $queryParams = @{
                    Uri = "$apiRoot/$zone/records/TXT/$recShort"
                    Method = 'Put'
                    Body = $bodyJson
                    ContentType = 'application/json'
                } + $commonParams
                Write-Debug "PUT $($queryParams.Uri)`n$bodyJson"
                Invoke-RestMethod @queryParams | Out-Null
            } catch { throw }
        }
    }


    <#
    .SYNOPSIS
        Remove a DNS TXT record from GoDaddy.

    .DESCRIPTION
        Remove a DNS TXT record from GoDaddy.

    .PARAMETER RecordName
        The fully qualified name of the TXT record.

    .PARAMETER TxtValue
        The value of the TXT record.

    .PARAMETER GDKey
        The GoDaddy API Key.

    .PARAMETER GDSecretSecure
        The GoDaddy API Secret.

    .PARAMETER GDSecret
        (DEPRECATED) The GoDaddy API Secret.

    .PARAMETER GDCustomerId
        The GoDaddy Customer ID. This is only required for the v2 API which is used for some reseller accounts. If not specified, the plugin will attempt to use the v1 API which doesn't require a customer ID.

    .PARAMETER GDUseOTE
        If specified, use the GoDaddy OTE test environment rather than the production environment.

    .PARAMETER ExtraParams
        This parameter can be ignored and is only used to prevent errors when splatting with more parameters than this function supports.

    .EXAMPLE
        $secret = Read-Host 'API Secret' -AsSecureString
        Remove-DnsTxt '_acme-challenge.example.com' 'txt-value' 'key' $secret

        Removes a TXT record for the specified site with the specified value.
    #>

}

function Save-DnsTxt {
    [CmdletBinding()]
    param(
        [Parameter(ValueFromRemainingArguments)]
        $ExtraParams
    )
    <#
    .SYNOPSIS
        Not required.

    .DESCRIPTION
        This provider does not require calling this function to commit changes to DNS records.

    .PARAMETER ExtraParams
        This parameter can be ignored and is only used to prevent errors when splatting with more parameters than this function supports.
    #>

}

############################
# Helper Functions
############################

# API Docs:
# https://developer.godaddy.com/doc/endpoint/domains
# Alternate URL for v2-only Brandsight docs
# https://developer.brandsight.com/#tag/DNS-Management

function Find-GDZone {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory, Position = 0)]
        [string]$RecordName,
        [Parameter(Mandatory, Position = 1)]
        [hashtable]$CommonParams,
        [Parameter(Mandatory, Position = 2)]
        [string]$ApiRoot
    )

    # setup a module variable to cache the record to zone mapping
    # so it's quicker to find later
    if (!$script:GDRecordZones) { $script:GDRecordZones = @{} }

    # check for the record in the cache
    if ($script:GDRecordZones.ContainsKey($RecordName)) {
        return $script:GDRecordZones.$RecordName
    }

    # We need to find the closest/deepest sub-zone that would hold
    # the record rather than just adding it to the apex.
    $pieces = $RecordName.Split('.')
    for ($i=0; $i -lt ($pieces.Count-1); $i++) {
        $zoneTest = $pieces[$i..($pieces.Count-1)] -join '.'
        Write-Debug "Checking $zoneTest"

        # Even though GoDaddy doesn't officially support sub-zone DNS hosting, it's possible
        # to add a "domain" that is technically a sub-zone of an actual domain registered
        # elsewhere and just delegate to GoDaddy's nameservers. The web UI and API won't list
        # it as a domain in the normal domain list. But you can modify its records if you know
        # the zone name. We're going to search for the zone name by querying for its NS records.

        try {
            $queryParams = @{
                Uri = "$ApiRoot/$zoneTest/records/NS"
            } + $CommonParams
            Write-Debug "GET $($queryParams.Uri)"
            # no error means we found the zone
            Invoke-RestMethod @queryParams | Out-Null
        } catch {
            # The NS check may throw either a 404 (Not Found) or a 422 (Unprocessable Entity) when
            # the zone is not found. Ignore those and re-throw anything else
            if ($_.Exception.Response.StatusCode -notin 404,422) {
                throw
            }
            continue
        }

        $script:GDRecordZones.$RecordName = $zoneTest
        return $zoneTest
    }

    return $null
}