IPv6 support

[tm-107]

Hi,
thanks a lot for the wonderful script!

I've been using your script for a few years now and have made some adjustments to suit my needs (2 Domains with tokens), but implanting IPv6 support is a little too difficult for me ...

So my question is: is there an update planned to support IPv6?

tm-107

[qpirsel]

I've made a reminder and will have a look at it the next days.

[tm-107]

I made a dirty, but working IPv6 version based on your script. However, there are some limitations:

• Windows 7 is not supported (i think "[System.Net.Dns]::GetHostByName" doesn't support IPv6).
• The IPv6 syntax is not checked. It is only checked that $myIP6 is not empty and it is NOT an IPv4 address (Unfortunately, I could not create a functional ipv6 syntax check).

Actually I only changed the service sites, modified CheckIP a little and changed Resolve DNS Name to -Type AAAA.

#requires -version 4

Clear-Host

# (mandatory) adjust your values
$fqdn  = ""
$pwd   = ""
$user  = ""

# (optional) set full path to (writable) logfile and switch logging on ($true) or off ($false)
$myLogFile = "C:\scripts\spdns_update.log"
$logging = $false

# (optional) add or remove IPv6 service sites. NOTE: A service site MUST return a plain IP string WITHOUT any HTML tags!
$myServiceList6 = "http://ip.tyk.nu/"`
                 ,"http://wgetip.com/"`
                 ,"http://ident.me"

### no necessity to edit below this line ###
function log {
    param(
        [Parameter(ValueFromPipeline=$true)]
        $piped
    )

    if ($logging) {
        (Get-Date -Format "yyyy-MM-dd HH:mm:ss").ToString() + " " + `
            $piped | Out-File -FilePath $myLogFile -Append
        }
    # console output
    "$piped"
}

function checkIP ($myServiceAddress) {

    try {
        $myIP = Invoke-WebRequest -Uri $myServiceAddress -UseBasicParsing -TimeoutSec 10 -ErrorAction Stop

        if ( -not ($myIP)) {
            "checkIPv6 ($fqdn) " + "No valid response" | log
            exit 1
        }

        if ($myIP -match '^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$') {
            "checkIPv6 ($fqdn) " + "No valid response (IPv4 was transmitted)" | log
            exit 1
        }

    } catch {
        "checkIPv6 ($fqdn) " + $_.Exception.Message | log
        exit 1
    }

    Return "$myIP"
}

$usedService = Get-Random -InputObject $myServiceList
"checkIP " + "Determine current IPv6 at " + $usedService | log
$currentIP = checkIP $usedService

try {
   if (([System.Environment]::OSVersion.Version.Major -eq 6) -and ([System.Environment]::OSVersion.Version.Minor -eq 1)) {
    "Windows 7/2008R2 currently not suported" | log
        exit 1
    } else {
    "Resolve DNS Name " + "Using native Commandlet" | log
        $ipHostEntry = Resolve-DnsName $fqdn -Type AAAA -ErrorAction Stop
        $registeredIP = $ipHostEntry[0].IPAddress
    }

} catch {
    "Resolve DNS Name ($fqdn) " + $_.Exception.Message | log
    exit 1
}

if ($registeredIP -like $currentIP) {
    "Precheck " + "IP $currentIP already registered ($fqdn)." | log
    exit 0
} else {
    $secpasswd = ConvertTo-SecureString $pwd -AsPlainText -Force
    $myCreds = New-Object System.Management.Automation.PSCredential ($user, $secpasswd)
    $url = "https://update.spdyn.de/nic/update?hostname=$fqdn&myip=$currentIP"

    try {
        $resp = Invoke-WebRequest -Uri $url -Credential $myCreds -UseBasicParsing -ErrorAction Stop        
    } catch {
        "Update DNS ($fqdn) " + $_.Exception.Message | log
        exit 1
    }

    "SPDNS result ($fqdn) " + $resp.Content | log
}

exit 0