DnsPlugins/Route53.ps1
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#Requires -Modules AwsPowershell function Add-DnsTxtRoute53 { [CmdletBinding()] param( [Parameter(Mandatory,Position=0)] [string]$RecordName, [Parameter(Mandatory,Position=1)] [string]$TxtValue, [Parameter(ParameterSetName='Keys',Mandatory,Position=2)] [string]$R53AccessKey, [Parameter(ParameterSetName='Keys',Mandatory,Position=3)] [securestring]$R53SecretKey, [Parameter(ParameterSetName='Profile',Mandatory)] [string]$R53ProfileName, [Parameter(ValueFromRemainingArguments)] $ExtraParams ) # For now, we're going to use the AwsPowershell module for both types of credentials. # But my hope is to eventually remove the AwsPowershell module dependency (which is # currently 75 MB by itself) for people who use the Access/Secret key pair. if ('Keys' -eq $PSCmdlet.ParameterSetName) { $credParam = @{AccessKey=$R53AccessKey; SecretKey=((New-Object PSCredential "user",$R53SecretKey).GetNetworkCredential().Password)} } else { $credParam = @{ProfileName=$R53ProfileName} } Write-Verbose "Attempting to find hosted zone for $RecordName" if (!($zoneID = Get-R53ZoneId $RecordName $credParam)) { throw "Unable to find Route53 hosted zone for $RecordName" } # It's possible there could already be a TXT record for this name with one or more existing # values and we don't want to overwrite them. So check first and add to it if it exists. $response = Get-R53ResourceRecordSet $zoneID $RecordName 'TXT' @credParam $rrSet = $response.ResourceRecordSets | Where-Object { $_.Name -eq "$RecordName." -and $_.Type -eq 'TXT' } if ($rrSet.ResourceRecords) { # add to the existing record $rrSet.ResourceRecords += @{Value="`"$TxtValue`""} } else { # create a new one $rrSet = New-Object Amazon.Route53.Model.ResourceRecordSet $rrSet.Name = $RecordName $rrSet.Type = 'TXT' $rrSet.TTL = 0 $rrSet.ResourceRecords.Add(@{Value="`"$TxtValue`""}) } # send the change Write-Verbose "Adding the record to zone ID $zoneID" $change = New-Object Amazon.Route53.Model.Change $change.Action = 'UPSERT' $change.ResourceRecordSet = $rrSet Edit-R53ResourceRecordSet -HostedZoneId $zoneID -ChangeBatch_Change $change @credParam | Out-Null <# .SYNOPSIS Add a DNS TXT record to a Route53 hosted zone. .DESCRIPTION This plugin currently requires the AwsPowershell module to be installed. For authentication to AWS, you can either specify an Access/Secret key pair or the name of an AWS credential profile previously stored using Set-AWSCredential. .PARAMETER RecordName The fully qualified name of the TXT record. .PARAMETER TxtValue The value of the TXT record. .PARAMETER R53AccessKey The Access Key ID for the IAM account with permissions to write to the specified hosted zone. .PARAMETER R53SecretKey The Secret Key for the IAM account specified by -R53AccessKey. .PARAMETER R53ProfileName The profile name of a previously stored credential using Set-AWSCredential from the AwsPowershell module. This only works if the AwsPowershell module is installed. .PARAMETER ExtraParams This parameter can be ignored and is only used to prevent errors when splatting with more parameters than this function supports. .EXAMPLE Add-DnsTxtRoute53 '_acme-challenge.site1.example.com' 'asdfqwer12345678' Adds a TXT record for the specified site with the specified value. #> } function Remove-DnsTxtRoute53 { [CmdletBinding()] param( [Parameter(Mandatory,Position=0)] [string]$RecordName, [Parameter(Mandatory,Position=1)] [string]$TxtValue, [Parameter(ParameterSetName='Keys',Mandatory,Position=2)] [string]$R53AccessKey, [Parameter(ParameterSetName='Keys',Mandatory,Position=3)] [securestring]$R53SecretKey, [Parameter(ParameterSetName='Profile',Mandatory)] [string]$R53ProfileName, [Parameter(ValueFromRemainingArguments)] $ExtraParams ) # For now, we're going to use the AwsPowershell module for both types of credentials. # But my hope is to eventually remove the AwsPowershell module dependency (which is # currently 75 MB by itself) for people who use the Access/Secret key pair. if ('Keys' -eq $PSCmdlet.ParameterSetName) { $credParam = @{AccessKey=$R53AccessKey; SecretKey=((New-Object PSCredential "user",$R53SecretKey).GetNetworkCredential().Password)} } else { $credParam = @{ProfileName=$R53ProfileName} } Write-Verbose "Attempting to find hosted zone for $RecordName" if (!($zoneID = Get-R53ZoneId $RecordName $credParam)) { throw "Unable to find Route53 hosted zone for $RecordName" } # The TXT record for this name could potentially have multiple values and we only want to # remove this specific one. $response = Get-R53ResourceRecordSet $zoneID $RecordName 'TXT' @credParam $rrSet = $response.ResourceRecordSets | Where-Object { $_.Name -eq "$RecordName." -and $_.Type -eq 'TXT' } $change = New-Object Amazon.Route53.Model.Change $change.ResourceRecordSet = $rrSet if (!$rrSet) { Write-Verbose "TXT record for $Record name not found. Already deleted?" return } elseif ($rrSet.ResourceRecords.Count -gt 1) { # update the values to exclude one we want to delete $change.Action = 'UPSERT' $rrSet.ResourceRecords = $rrSet.ResourceRecords | Where-Object { $_.Value -ne "`"$TxtValue`"" } } else { # just delete the record $change.Action = 'DELETE' } # remove the record Write-Verbose "Removing the record from zone ID $zoneID" Edit-R53ResourceRecordSet -HostedZoneId $zoneID -ChangeBatch_Change $change @credParam | Out-Null <# .SYNOPSIS Remove a DNS TXT record from a Route53 hosted zone. .DESCRIPTION This plugin currently requires the AwsPowershell module to be installed. For authentication to AWS, you can either specify an Access/Secret key pair or the name of an AWS credential profile previously stored using Set-AWSCredential. .PARAMETER RecordName The fully qualified name of the TXT record. .PARAMETER TxtValue The value of the TXT record. .PARAMETER R53AccessKey The Access Key ID for the IAM account with permissions to write to the specified hosted zone. .PARAMETER R53SecretKey The Secret Key for the IAM account specified by -R53AccessKey. .PARAMETER R53ProfileName The profile name of a previously stored credential using Set-AWSCredential from the AwsPowershell module. This only works if the AwsPowershell module is installed. .PARAMETER ExtraParams This parameter can be ignored and is only used to prevent errors when splatting with more parameters than this function supports. .EXAMPLE Remove-DnsTxtRoute53 '_acme-challenge.site1.example.com' 'asdfqwer12345678' Removes a TXT record for the specified site with the specified value. #> } function Save-DnsTxtRoute53 { [CmdletBinding()] param( [Parameter(ValueFromRemainingArguments)] $ExtraParams ) # Nothing to do. Route53 doesn't require a save step <# .SYNOPSIS Not required for Route53. .DESCRIPTION Route53 does not require calling this function to commit changes to DNS records. .PARAMETER ExtraParams This parameter can be ignored and is only used to prevent errors when splatting with more parameters than this function supports. #> } ############################ # Helper Functions ############################ function Get-R53ZoneId { [CmdletBinding()] param( [Parameter(Mandatory,Position=0)] [string]$RecordName, [Parameter(Mandatory,Position=1)] [hashtable]$CredParam ) # setup a module variable to cache the record to zone ID mapping # so it's quicker to find later if (!$script:R53RecordZones) { $script:R53RecordZones = @{} } # check for the record in the cache if ($script:R53RecordZones.ContainsKey($RecordName)) { return $script:R53RecordZones.$RecordName } # get the list of available zones $zones = Get-R53HostedZoneList @CredParam # Since Route53 could be hosting both apex and sub-zones, we need to find the closest/deepest # sub-zone that would hold the record rather than just adding it to the apex. So for something # like _acme-challenge.site1.sub1.sub2.example.com, we'd look for zone matches in the following # order: # - site1.sub1.sub2.example.com # - sub1.sub2.example.com # - sub2.example.com # - example.com $pieces = $RecordName.Split('.') for ($i=1; $i -lt ($pieces.Count-1); $i++) { $zoneTest = "$( $pieces[$i..($pieces.Count-1)] -join '.' )." Write-Verbose "Checking $zoneTest" if ($zoneTest -in $zones.Name) { $zoneID = ($zones | Where-Object { $_.Name -eq $zoneTest }).Id $script:R53RecordZones.$RecordName = $zoneID return $zoneID } } return $null } |