ddclient: T5144,T5791: Consolidated backport for dynamic dns updates and fixes #2692
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Enforce constraint on Dynamic DNS service name to be alphanumeric (including hyphens and underscores).
Since `service dns dynamic address <address> service <service> ...` changed to `service dns dynamic name <service> address <address> ...`, the resulting service and address config flip can result in conflicting `service` name. Additionally, since dynamic DNS service name now have name constraint, we need to normalize the service name to conform with the constraint. We now migrate the service name to (service|rfc2136)-<service>-<address> to avoid the conflict and optionally append an index if there is still a name conflict after normalization.
When migrating from `service dns dynamic interface <interface> ...` to `service dns dynamic address <address> ...`, the config name can potentially have a conflict when `address == 'web'`. Although the `/run/ddclient/ddclient.conf` that was generated earlier was incorrect, one could still potentially have misconfigured VyOS config without realizing it. We now append the old <interface> name to the config name to avoid conflict.
Legacy ddclient allowed arbitrary URLs in web-options, but the new has stricter validations. Apply migration to the old URLs. Also migrate checkip.dyndns.org to https://domains.google.com/checkip for better TLS support.
…vice We always enable HTTPS in ddclient configuration, however `http://checkip.dyndns.org` is HTTP only and does not support HTTPS. Warn the user if they are using this service. Also, make `url` in `web-options` mandatory.
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indrajitr
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Change Summary
This is a consolidated update for recent updates and fixes to ddclient.
Types of changes
Related Task(s)
Related PR(s)
Component(s) name
dns dynamic
Proposed changes
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