Run /usr/bin/smbpasswd and /usr/bin/net in a safe way.

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A wrapper for /usr/bin/smbpasswd that: sanitizes arguments; and forks.

The only allowed usage is:

smbpasswd (-s -a?|-x) USERNAME

USERNAME has to match the regex ^[a-zA-Z][0-9a-zA-Z._\\-]+$. USERNAME root is not allowed.

Meant for apache or nginx. You can safely grant sudo privileges to e.g. the apache user www-data.

Copy the generated binary:

$ git clone 'https://github.com/lbrayner/safe_smbpasswd'
$ cd safe_smbpasswd
safe_smbpasswd$ make
safe_smbpasswd$ cp -f smbpasswd/safe_smbpasswd /usr/local/bin/smbpasswd

Add this sudo rule (don't forget to use visudo):

www-data ALL = (root) NOPASSWD: /usr/local/bin/smbpasswd

Now www-data can safely run smbpasswd via safe_smbpasswd.