Auto-escape '&' ampersand explanation:
'easyrsa' uses 'sed' to build a safe SSL config file, which means
that an unescaped '&' ampersand cannot be used in the 'vars' file.
This is due to 'sed' treating '&' as a special character.
Rather than expect users to know all this and use extended escaping,
to get around 'easyrsa' set_var(), use auto-escape. This allows use
of unescaped '&' in vars file. Like any other character.
Auto-escape '$' dollar-sign explanation:
Using '$' in the 'vars' file MUST be escaped. Escaping '$' to stop
expansion is common knowledge and the first thing a user will try.
Using an escaped '$' in the 'vars' file results in an unescaped '$'
being written to the SSL config file, which is then expanded by
OpenSSL or choked on by LibreSSL. Auto-escaping '$' fixes this.
Add SSL library name to die().
Allow verify_ssl_lib() to run ONLY once.
Improve comments.
Re-order the areas searched for data files to prioritise preferred
locations over old defaults.
Tested-with: OpenSSL and LibreSSL and on Windows and FreeBSD.
Signed-off-by: Richard T Bonhomme <tincantech@protonmail.com>
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