ZDNS should accept `dig`-like input

[spencerdrak]

It appears (via digging through git history) that ZDNS at one point supported the following:

./zdns A example.com

However, this usage currently is not functional, as it performs no lookup and instead just blocks and waits for STDIN as the tool usually does.

This ticket involves re-creating the functionality to perform a dig-like lookup.

[tom-johnsen]

Hi, I don't know if this is still relevant as I haven't gotten as far as testing this yet. 😅 But I made a small wrapper in shell script that does exactly what you're asking for.

#!/bin/bash

args=("$@")
zdns=/PATH/TO/ZDNS/zdns

index=0
for ((i=0; i<${#args[@]}; i++)); do
    index=$i
done

host="${args[$index]}"
unset 'args[$index]'
nargs=("${args[@]}")

echo $host | $zdns "${nargs[@]}"

It takes the very last argument, strips it from the rest, then adds it to the preceding echo command.

Remember to edit the path to the zdns binary inside the script, then saved it as f.ex zdns-wrapper.sh and use chmod +x.

The folder containing the zdns binary should then be removed from the $PATH variable if it is included, and a symlink to the wrapper should be added to any folder included in $PATH with sudo ln -s /PATH/TO/WRAPPER/zdns-wrapper.sh /PATH/TO/$PATH/zdns.

If you can't remove the $PATH to the zdns binary, then add an export PATH=/PATH/TO/WRAPPER:$PATH in your .bashrc or your shells variant, so it takes precedence and runs when you type zdns.

It should accept both strings and filenames, if used with "string" or filename syntax respectively.

Now you can use it like dig with zdns A --all-nameservers "google.com".