webrick: Support bcrypt password hashing

This adds a password_hash keyword argument to
WEBrick::HTTPAuth::Htpasswd#initialize.  If set to :bcrypt, it
will create bcrypt hashes instead of crypt hashes, and will
raise an exception if the .htpasswd file uses crypt hashes.

If :bcrypt is used, then instead of calling
BasicAuth.make_passwd (which uses crypt),
WEBrick::HTTPAuth::Htpasswd#set_passwd will set the bcrypt
password directly.  It isn't possible to change the
make_passwd API to accept the password hash format, as that
would break configurations who use Htpasswd#auth_type= to set
a custom auth_type.

This modifies WEBrick::HTTPAuth::BasicAuth to handle checking
both crypt and bcrypt hashes.

There are commented out requires for 'string/crypt', to handle
when String#crypt is deprecated and the undeprecated version is
moved to a gem.

There is also a commented out warning for the case when
the password_hash keyword is not specified and 'string/crypt'
cannot be required.  I think the warning makes sense to nudge
users to using bcrypt.

I've updated the tests to test nil, :crypt, and :bcrypt values
for the password_hash keyword, skipping the bcrypt tests if the
bcrypt library cannot be required.

[ruby-core:88111] [Feature #14940]

From: Jeremy Evans <code@jeremyevans.net>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64060 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

0 files changed, 0 insertions, 0 deletions