With nsupdate the rule seems to be: filenames need to be wrapped
in double quotes, while all other options must not use double quotes.
Hence there is no way to resolve the shellcheck offense, because
the key requires quotes, but the other options must not use quotes.
Instead of using comments declare info in a special variable.
Then the variable can be used to print the DNS API provider usage.
The usage can be parsed on UI and show all needed inputs for options.
The info is stored in plain string that it's both human-readable and easy to parse:
dns_example_info='API name
An extended description.
Multiline.
Domains: list of alternative domains to find
Site: the dns provider website e.g. example.com
Docs: Link to ACME.sh wiki for the provider
Options:
VARIABLE1 Title for the option1.
VARIABLE2 Title for the option2. Default "default value".
VARIABLE3 Title for the option3. Description to show on UI. Optional.
Issues: Link to a support ticket on https://github.com/acmesh-official/acme.sh
Author: First Lastname <authoremail@example.com>, Another Author <https://github.com/example>;
'
Here:
VARIABLE1 will be required.
VARIABLE2 will be required too but will be populated with a "default value".
VARIABLE3 is optional and can be empty.
A DNS provider may have alternative options like CloudFlare may use API KEY or API Token.
You can use a second section OptionsAlt: section.
Some providers may have alternative names or domains e.g. Aliyun and AlibabaCloud.
Add them to Domains: section.
Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
For being able to use e.g. "-v" to use TCP communication with the NSUPDATE_SERVER -> NSUPDATE_OPT has been added.
NSUPDATE_OPT will be plainly added to the command line of nsupdate.
NSUPDATE_OPT will also be saved to conf respectively read from conf
Some DNS servers for which dns_nsupdate.sh is applicable (such
as dyn.com's 'Standard DNS' TSIG update mechanism), require that
the zone be set during the nsupdate transaction. Therefore we
add a new environment variable NSUPDATE_ZONE which is used to
set the zone for the DNS TSIG transaction.
Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>
When debug is enabled, also use nsupdate's debug logging
so that the user can see potential issues with the nsupdate
transaction.
Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>
on Ubuntu 14.04.1 LTS if nsupdate runs without port number given it treated argument following server name as port number.
and throws error:
```
port 'update' is not numeric
syntax error
```
