121 lines
4.3 KiB
PowerShell
121 lines
4.3 KiB
PowerShell
###################
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# UpdateDynv6.ps1 #
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###################
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#
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# Windows Powershell Script for updating Dynamic DNS on Dynv6.com using the
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# RESTful interface. Use the windows task schedualer to automatically run.
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#
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# Script Parameters:
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# -zone <string> DNS Zone (domain name) to update.
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# -token <string> HTTP Token, see: https://dynv6.com/keys#token
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# [-netmask] <string> Optional, IPv6 netmask, defaults to 128.
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# [-logfile] <string> Optional, filename to log to, defaults to "~/.dynv6.log".
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# [-ipv4] <string> Optional, IPv4 override, to skip resolving.
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# [-ipv6] <string> Optional, IPv6 override, to skip resolving.
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#
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### Example
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# Run from CMD or Batch file to IPv4 and IPv6 with automatic lookup:
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# powershell.exe -File ./Dynv6.ps1 -zone "ExampleDomain.com" -token "XXXXXX"
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#
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###################
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# Copyright 2020 Joe Herbert ( djneonc@gmail.com )
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# Copyright 2023 Andrew Stowell ( andrew@digitaladapt.com )
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the Software
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# is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
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# IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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###################
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# we need zone and token, we also accept, netmask, and overrides
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param(
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[string] $zone = $(throw "-zone is required"),
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[string] $token = $(throw "-token is required"),
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[string] $netmask = "128",
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[string] $logfile = "$env:USERPROFILE\\.dynv6.log",
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[string] $ipv4 = "",
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[string] $ipv6 = ""
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)
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# we store ip addresses in files, so we only update when there is a change
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$file4 = "$env:USERPROFILE\\.dynv6.addr4"
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$file6 = "$env:USERPROFILE\\.dynv6.addr6"
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# load existing ip addresses, when available
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if (Test-Path -Path $file4) {
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$old4 = Get-Content -Path $file4
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} else {
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$old4 = $null
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}
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if (Test-Path -Path $file6) {
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$old6 = Get-Content -Path $file6
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} else {
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$old6 = $null
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}
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$lookup4 = [System.Uri]'https://ipinfo.io/ip'
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$lookup6 = [System.Uri]'https://v6.ipinfo.io/ip'
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$update4 = [System.Uri]'https://dynv6.com/api/update'
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$update6 = [System.Uri]'https://dynv6.com/api/update'
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Get-Date | Tee-Object -FilePath $logfile -Append | Out-Host
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# lookup IPv4, will be skipped if variable already set
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if ( ! $ipv4) {
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$ipv4 = Invoke-RestMethod -Method Get -Uri $lookup4
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}
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# lookup IPv6, will be skipped if variable already set
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if ( ! $ipv6) {
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$ipv6 = Invoke-RestMethod -Method Get -Uri $lookup6
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}
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$ipv6 = "$ipv6/$netmask"
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# update IPv4, if changed
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if ($old4 -eq $ipv4) {
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Tee-Object -FilePath $logfile -Append -InputObject "IPv4 address unchanged" | Out-Host
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} else {
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# send IPv4 address to dynv6
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Tee-Object -FilePath $logfile -Append -InputObject "Updating IPv4" | Out-Host
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$body = @{
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zone = $zone
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token = $token
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ipv4 = $ipv4
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}
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Invoke-RestMethod -Method Get -Uri $update4 -Body $body | Tee-Object -FilePath $logfile -Append | Out-Host
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# save current IPv4 address
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Out-File -FilePath $file4 -InputObject $ipv4
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}
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# update IPv6, if changed
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if ($old6 -eq $ipv6) {
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Tee-Object -FilePath $logfile -Append -InputObject "IPv6 address unchanged" | Out-Host
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} else {
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# send IPv6 address to dynv6
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Tee-Object -FilePath $logfile -Append -InputObject "Updating IPv6" | Out-Host
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$body = @{
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zone = $zone
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token = $token
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ipv6 = $ipv6
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}
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Invoke-RestMethod -Method Get -Uri $update6 -Body $body | Tee-Object -FilePath $logfile -Append | Out-Host
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# save current IPv6 address
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Out-File -FilePath $file6 -InputObject $ipv6
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}
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