Plugins/Akamai.ps1
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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(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKHost, [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKAccessToken, [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKClientToken, [Parameter(ParameterSetName='Secure',Mandatory)] [securestring]$AKClientSecret, [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKClientSecretInsecure, [Parameter(ParameterSetName='EdgeRC',Mandatory)] [switch]$AKUseEdgeRC, [Parameter(ParameterSetName='EdgeRC')] [string]$AKEdgeRCFile='~\.edgerc', [Parameter(ParameterSetName='EdgeRC')] [string]$AKEdgeRCSection='default', [Parameter(ValueFromRemainingArguments)] $ExtraParams ) if (-not $script:AKZonesToPoll) { $script:AKZonesToPoll = @() } $restParams = Get-AKRestParams @PSBoundParameters $zoneName = Find-AKZone $RecordName $restParams Write-Verbose "found $zoneName" $domainBase = "/config-dns/v2/zones/$zoneName" $rec = Invoke-AKRest "$domainBase/names/$RecordName/types/TXT" @restParams if ($rec -and "`"$TxtValue`"" -in $rec.rdata) { Write-Debug "Record $RecordName already contains $TxtValue. Nothing to do." } else { Write-Verbose "Adding a TXT record for $RecordName with value $TxtValue" if (-not $rec) { # build the new record object $recBody = @{ name = $RecordName type = 'TXT' ttl = 60 rdata = @($TxtValue) } | ConvertTo-Json -Compress # add it Invoke-AKRest "$domainBase/names/$RecordName/types/TXT" ` -Method POST -Body $recBody @restParams | Out-Null } else { # update the rdata with the txt value $rec.ttl = $rec.ttl.ToString() $rec.rdata = @($TxtValue) + $rec.rdata $recBody = $rec | ConvertTo-Json # update it Invoke-AKRest "$domainBase/names/$RecordName/types/TXT" ` -Method PUT -Body $recBody @restParams | Out-Null } # add the zone to the propagation polling list if ($zoneName -notin $script:AKZonesToPoll) { Write-Debug "Adding $zoneName to polling list" $script:AKZonesToPoll += $zoneName } } <# .SYNOPSIS Add a DNS TXT record to Akamai .DESCRIPTION Add a DNS TXT record to Akamai .PARAMETER RecordName The fully qualified name of the TXT record. .PARAMETER TxtValue The value of the TXT record. .PARAMETER AKHost The Akamai API DNS hostname associated with your credentials. .PARAMETER AKAccessToken The access_token associated with your credentials. .PARAMETER AKClientToken The client_token associated with your credentials. .PARAMETER AKClientSecret The client_secret associated with your credentials. This SecureString version should only be used on Windows or any OS with PowerShell 6.2+. .PARAMETER AKClientSecretInsecure The client_secret associated with your credentials. This standard String version can be used on any OS. .PARAMETER AKUseEdgeRC If specified, the necessary API tokens will be read from a .edgrc file. Use AKEdgeRCFile and AKEdgeRCSection to specify the details. .PARAMETER AKEdgeRCFile The path to a .edgerc file with API credentials. Defaults to ~\.edgerc .PARAMETER AKEdgeRCSection The section that contains the credentials within a .edgerc file. Defaults to "default" .PARAMETER ExtraParams This parameter can be ignored and is only used to prevent errors when splatting with more parameters than this function supports. .EXAMPLE $secret = Read-Host -Prompt "Client Secret" -AsSecureString PS C:\>$params = @{AKHost='apihost.akamaiapis.net';AKAccessToken='token-value';AKClientToken='token-value';AKClientSecret=$secret} PS C:\>Add-DnsTxt '_acme-challenge.example.com' 'txt-value' @params Adds the specified TXT record with the specified value using explicit API credentials and a secure client secret. .EXAMPLE $params = @{AKHost='apihost.akamaiapis.net';AKAccessToken='token-value';AKClientToken='token-value';AKClientSecretInsecure='secret-value'} PS C:\>Add-DnsTxt '_acme-challenge.example.com' 'txt-value' @params Adds the specified TXT record with the specified value using explicit API credentials and a plain text client secret. .EXAMPLE Add-DnsTxt '_acme-challenge.example.com' 'txt-value' -AKUseEdgeRC Adds the specified TXT record with the specified value using the default .edgerc file and section. #> } function Remove-DnsTxt { [CmdletBinding(DefaultParameterSetName='Secure')] param( [Parameter(Mandatory,Position=0)] [string]$RecordName, [Parameter(Mandatory,Position=1)] [string]$TxtValue, [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKHost, [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKAccessToken, [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKClientToken, [Parameter(ParameterSetName='Secure',Mandatory)] [securestring]$AKClientSecret, [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKClientSecretInsecure, [Parameter(ParameterSetName='EdgeRC',Mandatory)] [switch]$AKUseEdgeRC, [Parameter(ParameterSetName='EdgeRC')] [string]$AKEdgeRCFile='~\.edgerc', [Parameter(ParameterSetName='EdgeRC')] [string]$AKEdgeRCSection='default', [Parameter(ValueFromRemainingArguments)] $ExtraParams ) $restParams = Get-AKRestParams @PSBoundParameters $zoneName = Find-AKZone $RecordName $restParams Write-Verbose "found $zoneName" $domainBase = "/config-dns/v2/zones/$zoneName" $rec = Invoke-AKRest "$domainBase/names/$RecordName/types/TXT" @restParams if ($rec -and "`"$TxtValue`"" -in $rec.rdata) { Write-Verbose "Removing TXT record for $RecordName with value $TxtValue" if ($rec.rdata.Count -gt 1) { # update the rdata with the value removed $rec.rdata = @($rec.rdata | Where-Object { $_ -ne "`"$TxtValue`"" }) $recBody = $rec | ConvertTo-Json # update it Invoke-AKRest "$domainBase/names/$RecordName/types/TXT" ` -Method PUT -Body $recBody @restParams | Out-Null } else { # remove the whole record since this is the only value Invoke-AKRest "$domainBase/names/$RecordName/types/TXT" ` -Method DELETE @restParams | Out-Null } } else { Write-Debug "Record $RecordName with value $TxtValue doesn't exist. Nothing to do." } <# .SYNOPSIS Remove a DNS TXT record from Akamai .DESCRIPTION Remove a DNS TXT record from Akamai .PARAMETER RecordName The fully qualified name of the TXT record. .PARAMETER TxtValue The value of the TXT record. .PARAMETER AKHost The Akamai API DNS hostname associated with your credentials. .PARAMETER AKAccessToken The access_token associated with your credentials. .PARAMETER AKClientToken The client_token associated with your credentials. .PARAMETER AKClientSecret The client_secret associated with your credentials. This SecureString version should only be used on Windows or any OS with PowerShell 6.2+. .PARAMETER AKClientSecretInsecure The client_secret associated with your credentials. This standard String version can be used on any OS. .PARAMETER AKUseEdgeRC If specified, the necessary API tokens will be read from a .edgrc file. Use AKEdgeRCFile and AKEdgeRCSection to specify the details. .PARAMETER AKEdgeRCFile The path to a .edgerc file with API credentials. Defaults to ~\.edgerc .PARAMETER AKEdgeRCSection The section that contains the credentials within a .edgerc file. Defaults to "default" .PARAMETER ExtraParams This parameter can be ignored and is only used to prevent errors when splatting with more parameters than this function supports. .EXAMPLE $secret = Read-Host -Prompt "Client Secret" -AsSecureString PS C:\>$params = @{AKHost='apihost.akamaiapis.net';AKAccessToken='token-value';AKClientToken='token-value';AKClientSecret=$secret} PS C:\>Remove-DnsTxt '_acme-challenge.example.com' 'txt-value' @params Removes the specified TXT record with the specified value using explicit API credentials and a secure client secret. .EXAMPLE $params = @{AKHost='apihost.akamaiapis.net';AKAccessToken='token-value';AKClientToken='token-value';AKClientSecretInsecure='secret-value'} PS C:\>Remove-DnsTxt '_acme-challenge.example.com' 'txt-value' @params Removes the specified TXT record with the specified value using explicit API credentials and a plain text client secret. .EXAMPLE Remove-DnsTxt '_acme-challenge.example.com' 'txt-value' -AKUseEdgeRC Removes the specified TXT record with the specified value using the default .edgerc file and section. #> } function Save-DnsTxt { [CmdletBinding(DefaultParameterSetName='Secure')] param( [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKHost, [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKAccessToken, [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKClientToken, [Parameter(ParameterSetName='Secure',Mandatory)] [securestring]$AKClientSecret, [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKClientSecretInsecure, [Parameter(ParameterSetName='EdgeRC',Mandatory)] [switch]$AKUseEdgeRC, [Parameter(ParameterSetName='EdgeRC')] [string]$AKEdgeRCFile='~\.edgerc', [Parameter(ParameterSetName='EdgeRC')] [string]$AKEdgeRCSection='default', [int]$AKPollTimeout = 300, [Parameter(ValueFromRemainingArguments)] $ExtraParams ) $pollZones = $script:AKZonesToPoll if ($pollZones.Count -gt 0) { Write-Verbose "Waiting for $($pollZones.Count) zone(s) to become active." $restParams = Get-AKRestParams @PSBoundParameters $startTime = [DateTimeOffset]::Now while ($pollZones.Count -gt 0 -and ([DateTimeOffset]::Now - $startTime).TotalSeconds -lt $AKPollTimeout) { Start-Sleep 10 # reverse through the list so the index doesn't change # if we remove one for ($i = ($pollZones.Count-1); $i -ge 0; $i--) { $zone = $pollZones[$i] $zoneObject = Invoke-AKRest "/config-dns/v2/zones/$zone" @restParams if (-not $zoneObject) { throw "Zone $zone not found while trying to poll activationState." } if ($zoneObject.activationState -eq 'ACTIVE') { Write-Verbose "$zone is updated" $pollZones = @($pollZones | Where-Object { $_ -ne $zone }) } } } Write-Debug "Polling stopped after $(([DateTimeOffset]::Now - $startTime).TotalSeconds) seconds" if ($pollZones.Count -gt 0) { Write-Warning "One or more zones failed to become active before the timeout expired: $(($pollZones -join ', '))" } } $script:AKZonesToPoll = @() <# .SYNOPSIS Block while polling the API for zone status indicating changes have been propagated. .DESCRIPTION This function will query the activationState of changed zones and wait until each zone has become "ACTIVE" which indicates the changes have finished propagating to the nameservers. .PARAMETER AKHost The Akamai API DNS hostname associated with your credentials. .PARAMETER AKAccessToken The access_token associated with your credentials. .PARAMETER AKClientToken The client_token associated with your credentials. .PARAMETER AKClientSecret The client_secret associated with your credentials. This SecureString version should only be used on Windows or any OS with PowerShell 6.2+. .PARAMETER AKClientSecretInsecure The client_secret associated with your credentials. This standard String version can be used on any OS. .PARAMETER AKUseEdgeRC If specified, the necessary API tokens will be read from a .edgrc file. Use AKEdgeRCFile and AKEdgeRCSection to specify the details. .PARAMETER AKEdgeRCFile The path to a .edgerc file with API credentials. Defaults to ~\.edgerc .PARAMETER AKEdgeRCSection The section that contains the credentials within a .edgerc file. Defaults to "default" .PARAMETER AKPollTimeout The number of seconds to wait while polling before giving up. Defaults to 300 (5 minutes). .PARAMETER ExtraParams This parameter can be ignored and is only used to prevent errors when splatting with more parameters than this function supports. .EXAMPLE Save-DnsTxt -AKUseEdgeRC Wait for zone changes to propagate using the default .edgerc file for authentication. #> } ############################ # Helper Functions ############################ # API Docs # https://developer.akamai.com/legacy/introduction/Client_Auth.html # https://developer.akamai.com/api/cloud_security/edge_dns_zone_management/v2.html # https://github.com/akamai-contrib/akamaipowershell # https://github.com/akamai/AkamaiOPEN-edgegrid-powershell # Despite the client auth protocol docs being in a "legacy" section of the site, there # does not appear to be any more recent non-legacy auth protocol that works with the # Akamai APIs as of March 2020. function Find-AKZone { [CmdletBinding()] param( [Parameter(Mandatory,Position=0)] [string]$RecordName, [Parameter(Mandatory,Position=1)] [hashtable]$RestParams ) # setup a module variable to cache the record to zone ID mapping # so it's quicker to find later if (!$script:AKRecordZones) { $script:AKRecordZones = @{} } # check for the record in the cache if ($script:AKRecordZones.ContainsKey($RecordName)) { return $script:AKRecordZones.$RecordName } # Search for the zone from longest to shortest set of FQDN pieces. $pieces = $RecordName.Split('.') for ($i=0; $i -lt ($pieces.Count-1); $i++) { $zoneTest = $pieces[$i..($pieces.Count-1)] -join '.' Write-Debug "Checking $zoneTest" try { $response = Invoke-AKRest "/config-dns/v2/zones?search=$zoneTest&types=primary&showAll=true" @RestParams # the search may return multiple partial results, so loop through them # looking for an exact match foreach ($item in $response.zones) { if ($zoneTest -eq $item.zone) { $script:AKRecordZones.$RecordName = $item.zone return $item.zone } } } catch { throw } } throw "No zone found for $RecordName" } function Get-AKRestParams { [CmdletBinding(DefaultParameterSetName='Secure')] param( [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKHost, [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKAccessToken, [Parameter(ParameterSetName='Secure',Mandatory)] [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKClientToken, [Parameter(ParameterSetName='Secure',Mandatory)] [securestring]$AKClientSecret, [Parameter(ParameterSetName='Insecure',Mandatory)] [string]$AKClientSecretInsecure, [Parameter(ParameterSetName='EdgeRC',Mandatory)] [switch]$AKUseEdgeRC, [Parameter(ParameterSetName='EdgeRC')] [string]$AKEdgeRCFile='~\.edgerc', [Parameter(ParameterSetName='EdgeRC')] [string]$AKEdgeRCSection='default', [Parameter(ValueFromRemainingArguments)] $ExtraConnectParams ) if ('EdgeRC' -eq $PSCmdlet.ParameterSetName) { # get the API values we need from the .edgerc file $iniHash = Get-IniContent $AKEdgeRCFile if ($AKEdgeRCSection -notin $iniHash.Keys) { throw "'$AKEdgeRCSection' section not found in '$AKEdgeRCFile'" } # return the values from the specified ini section return @{ ApiHost = $iniHash.$AKEdgeRCSection.host AccessToken = $iniHash.$AKEdgeRCSection.access_token ClientToken = $iniHash.$AKEdgeRCSection.client_token ClientSecret = $iniHash.$AKEdgeRCSection.client_secret } } elseif ('Secure' -eq $PSCmdlet.ParameterSetName) { # convert the securestring to a string $AKClientSecretInsecure = (New-Object PSCredential "user",$AKClientSecret).GetNetworkCredential().Password } # return the passed in values return @{ ApiHost = $AKHost AccessToken = $AKAccessToken ClientToken = $AKClientToken ClientSecret = $AKClientSecretInsecure } } function Invoke-AKRest { [CmdletBinding()] param( [Parameter(Mandatory,Position=0)] [string]$Path, [Parameter(Position=1)] [ValidateSet('GET','PUT','POST','DELETE')] [string]$Method = 'GET', [string]$Body, [int]$MaxBody = 131072, [string]$AcceptHeader = 'application/json', [Parameter(Mandatory)] [string]$ApiHost, [Parameter(Mandatory)] [string]$AccessToken, [Parameter(Mandatory)] [string]$ClientToken, [Parameter(Mandatory)] [string]$ClientSecret ) # initialize some stuff we'll need for the signature process $uri = [uri]"https://$($ApiHost)$Path" $Method = $Method.ToUpper() $ts = [DateTimeOffset]::UtcNow.ToString('yyyyMMddTHH:mm:sszz00') $nonce = (New-Guid).ToString() $authString = "EG1-HMAC-SHA256 client_token=$ClientToken;access_token=$AccessToken;timestamp=$ts;nonce=$nonce;" # SHA256 hash the body up to the first $MaxBody characters $bodyHash = [string]::Empty if ($Body -and $Method -eq 'POST') { $sha256 = [Security.Cryptography.SHA256]::Create() $bodyToHash = if ($Body.Length -le $MaxBody) { $Body } else { $Body.Substring(0,$MaxBody) } $bodyBytes = [Text.Encoding]::ASCII.GetBytes($bodyToHash) $bodyHash = [Convert]::ToBase64String($sha256.ComputeHash($bodyBytes)) } # Build the signature data $sigData = "$Method`thttps`t$($uri.Authority)`t$($uri.PathAndQuery)`t`t$bodyHash`t$authString" # Hash the timestamp using the client secret and then use that to # hash the signature data to get the signature for the auth header $tsHash = Get-HMACSHA256Hash $ClientSecret $ts $signature = Get-HMACSHA256Hash $tsHash $sigData $headers = @{ Authorization = "$($authString)signature=$signature" Accept = $AcceptHeader } # Apparently Akamai doesn't support the "Expect: 100 Continue" header # and other implementations try to explicitly disable it using # [System.Net.ServicePointManager]::Expect100Continue = $false # However, none of the environments I tested (PS 5.1, 6, and 7) # actually sent that header by default for any HTTP verb. # It's plausible it was sent pre-5.1 or pre-.NET 4.7.1. But since # we don't support those, we don't have to worry about them. # build the call parameters $irmParams = @{ Method = $Method Uri = $uri Headers = $headers ContentType = 'application/json' MaximumRedirection = 0 ErrorAction = 'Stop' } if ($Body) { $irmParams.Body = $Body } try { Invoke-RestMethod @irmParams @script:UseBasic } catch { # ignore 404 errors and just return $null # otherwise, let it through if ([Net.HttpStatusCode]::NotFound -eq $_.Exception.Response.StatusCode) { return $null } else { throw } } } function Get-HMACSHA256Hash { [CmdletBinding()] param( [Parameter(Mandatory,Position=0)] [string]$Key, [Parameter(Mandatory,Position=1)] [string]$Message ) $hmac = New-Object System.Security.Cryptography.HMACSHA256 $hmac.Key = [Text.Encoding]::ASCII.GetBytes($Key) $msgBytes = [Text.Encoding]::ASCII.GetBytes($Message) return [Convert]::ToBase64String($hmac.ComputeHash($msgBytes)) } function Get-IniContent { [CmdletBinding()] param( [Parameter(Mandatory)] [string]$FilePath ) # A super basic Regex based INI file parser # Sections become keys in a hashtable # Key/Value pairs within a section are added to a nested hashtable. # Pre/Post whitespace is trimmed from everything $ini = @{} switch -regex -file $FilePath { "^\[(.+)\]" # Section { $section = $matches[1].Trim() $ini[$section] = @{} } "(.+?)\s*=(.*)" # Key { $name,$value = $matches[1..2] $ini[$section][$name.Trim()] = $value.Trim() } } return $ini } |