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Bug #12754

closed

Google Domains Dynamic DNS responses are not parsed properly

Added by Daniel Pontillo over 3 years ago. Updated almost 3 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Viktor Gurov
Category:
Dynamic DNS
Target version:
2.7.0
Start date:
Due date:
% Done:

100%

Estimated time:
Plus Target Version:
22.05
Release Notes:
Default
Affected Version:
2.5.2
Affected Architecture:
amd64

Description

When using Google Domains with the Dynamic DNS feature, it fails for Unknown Response. This is due to Google requiring POST requests to be of type Content-Type: application/x-www-form-urlencoded, and can be fixed by using URL encoded post parametrs.

/services_dyndns_edit.php: phpDynDNS (<domain>): (Unknown Response)

Here is code to fix it in /etc/inc/dyndns.class:

case 'googledomains':
  $needsIP = FALSE;
  $post_data['username:password'] = $this->_dnsUser . ':' . $this->_dnsPass;
  $post_data['hostname'] = $this->_dnsHost;
  $post_data['myip'] = $this->_dnsIP;
  $post_data['offline'] = 'no';
  $server = "https://domains.google.com/nic/update";
  $port = "";
  curl_setopt($ch, CURLOPT_URL, 'https://domains.google.com/nic/update');
  curl_setopt($ch, CURLOPT_USERPWD, $this->_dnsUser . ':' . $this->_dnsPass);
  curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($post_data));
  curl_setopt($ch, CURLOPT_USERAGENT, $this->_UserAgent);
  curl_setopt($ch, CURLOPT_POST,1);
  break;

To get around the issue, the main thing is changing the CURLOPT_POSTFIELDS value to be http_build_query($post_data) instead of just the $post_data Array. Doing this will force PHP's curl lib to use Content-Type: application/x-www-form-urlencoded... this fixes the issue with P3P and post requests. I threw in the USERAGENT also, since Google says we should use it.

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 #1

Updated by Viktor Gurov over 3 years ago

  • Assignee set to Viktor Gurov
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 #2

Updated by Jim Pingle over 3 years ago

  • Status changed from New to Pull Request Review
  • Target version set to 2.7.0
  • Plus Target Version set to 22.05
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 #3

Updated by Dakota Hourie over 3 years ago

Thank you for this. I edited my /etc/inc/dyndns.class file with your code snippet and that resolved my same issue.

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 #4

Updated by Viktor Gurov over 3 years ago

  • Status changed from Pull Request Review to Feedback
  • % Done changed from 0 to 100
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 #5

Updated by Jim Pingle about 3 years ago

  • Subject changed from DynDNS fails with Unknown Response when uploading IP to Google Domains to Google Domains Dynamic DNS responses are not parsed properly

Updating subject for release notes.

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 #6

Updated by Jim Pingle about 3 years ago

  • Status changed from Feedback to Resolved
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 #7

Updated by Alex Neihaus almost 3 years ago

FWIW, this fix didn't work for me (CE running 2.6).

Instead, I had to use the recommendation at https://forum.netgate.com/topic/169652/new-isp-dynamic-dns-is-not-updating/5

Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Dynamic DNS googledomains (HOSTNAME_REDACTED): _update() starting.
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: HTTP/2 400
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: content-type: text/html; charset=utf-8
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: cache-control: no-cache, no-store, max-age=0, must-revalidate
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: pragma: no-cache
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: expires: Mon, 01 Jan 1990 00:00:00 GMT
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: date: Fri, 22 Jul 2022 20:15:42 GMT
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: p3p: CP="This is not a P3P policy! See g.co/p3phelp for more info."
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: server: ESF
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: x-xss-protection: 0
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: x-content-type-options: nosniff
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: set-cookie: NID=511=K5vZ-jHj5JeUlJ8PvKqNbRmkNVTncND9IdA2jP9Yff4wLa2SN1p0rrabZbe_gLulobe0rqiEwrpH88lRio3esD84SkS3JSE1xa_LaA5Hbh3--tE1RfPR6Ku8zG_txAth9dmRT7IHnmJIvJqj8R50cY8vcpjlvSOjsLA8Uf3jUAA; expires=Sat, 21-Jan-2023 20:15:42 GMT; path=/; domain=.google.com; HttpOnly
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: accept-ranges: none
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header: vary: Accept-Encoding
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header:
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Response Header:
Jul 22 16:15:42 php-fpm 361
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: Dynamic DNS googledomains (HOSTNAME_REDACTED): _checkStatus() starting.
Jul 22 16:15:42 php-fpm 361
Jul 22 16:15:42 php-fpm 361 /services_dyndns.php: phpDynDNS (HOSTNAME_REDACTED): (Unknown Response)

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