[patch] libcrypt & friends - modular crypt format support in /etc/login.conf

[Derek (freebsd lists)]

Hello!

I've been working on this for a while, and I've produced a patch 
that does a few things with the base system:

1. allows modular crypt to be specified as passwd_format in 
/etc/login.conf
   - this allows setting the algorithm *and rounds*, i.e. $2b$10$ 
for users of varying classes.
   - this will allow any future algorithms and parameters 
supported by crypt(3) to be supported by the tools around login.conf

2. introduces a new api, crypt_makesalt which will generate an 
appropriate salt for any algorithm selected

3. updates userland to use this API, and removes totally the 
{crypt_set_format, login_setcryptfmt, login_getcryptfmt} APIs

4. switches crypt algorithms to use thread-local storage, so the 
good old global crypt buffer is thread-local

5. includes a bunch of new test vectors for libcrypt ATF tests


There are references to previous discussions/patches/etc here:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=182518

http://docs.freebsd.org/cgi/getmsg.cgi?fetch=168499+0+/usr/local/www/db/text/2013/freebsd-current/20131006.freebsd-current

http://docs.freebsd.org/cgi/getmsg.cgi?fetch=361757+0+/usr/local/www/db/text/2014/freebsd-current/20140112.freebsd-current


And most recent discussion here:

http://docs.freebsd.org/cgi/getmsg.cgi?fetch=1751919+0+archive/2014/freebsd-current/20140716.freebsd-current


Anyways, I've put a bunch of work into this, and am anxious to 
actually get this accepted into -HEAD.



What more can I do at this point?



A patch against current is in the original PR/"bug":
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=182518

Thanks,
Derek