Issue #12833 has been updated by Gary Larizza.

Branch changed from 
https://github.com/glarizza/puppet-1/tree/feature/osx_dscl_providers/optimization
 to https://github.com/glarizza/puppet-1/tree/bug/master/12833_user_refactor

I've pushed up my changes, re-added the old group provider and nameservice 
plugin, and created a new branch to track this code path so I can get a proper 
Pull Request filed sooner rather than later --> 
<https://github.com/glarizza/puppet-1/tree/bug/master/12833_user_refactor>  My 
next task, which I'm doing now, is squashing down commits so that there's not 
84 commits of craziness.  This has been rebased against master and should be 
workable.  I've made some slight code changes and written tests for them, so 
anyone who's using an older branch of this might want to check out the changes.

I will be rebasing and squashing commits (along with force-pushing changes) on 
this branch, so beware of any changes.  Once I get a cleaned up Pull Request, 
I'll update the ticket.
----------------------------------------
Bug #12833: Password property for User type is broke in OS X 10.8
https://projects.puppetlabs.com/issues/12833#change-75048

Author: Gary Larizza
Status: In Topic Branch Pending Review
Priority: Normal
Assignee: Gary Larizza
Category: OSX
Target version: 3.x
Affected Puppet version: 
Keywords: password user mac mountain lion os x
Branch: https://github.com/glarizza/puppet-1/tree/bug/master/12833_user_refactor


Setting users passwords is broke in 10.8 due to the fact that Apple moved to 
PBKDF2 passwords in 10.8:


<pre>
Garys-Mac:~ glarizza$ sudo puppet resource user glarizza
Password:
/Library/Ruby/Site/1.8/puppet/provider/nameservice/directoryservice.rb:379:in 
`get_password': undefined method `string' for nil:NilClass (NoMethodError)
        from 
/Library/Ruby/Site/1.8/puppet/provider/nameservice/directoryservice.rb:199:in 
`generate_attribute_hash'
        from 
/Library/Ruby/Site/1.8/puppet/provider/nameservice/directoryservice.rb:235:in 
`single_report'
        from 
/Library/Ruby/Site/1.8/puppet/provider/nameservice/directoryservice.rb:76:in 
`instances'
        from 
/Library/Ruby/Site/1.8/puppet/provider/nameservice/directoryservice.rb:75:in 
`collect'
        from 
/Library/Ruby/Site/1.8/puppet/provider/nameservice/directoryservice.rb:75:in 
`instances'
        from /Library/Ruby/Site/1.8/puppet/type.rb:889:in `instances'
        from /Library/Ruby/Site/1.8/puppet/type.rb:882:in `collect'
        from /Library/Ruby/Site/1.8/puppet/type.rb:882:in `instances'
        from /Library/Ruby/Site/1.8/puppet/indirector/resource/ral.rb:4:in 
`find'
        from /Library/Ruby/Site/1.8/puppet/indirector/indirection.rb:196:in 
`find'
        from /Library/Ruby/Site/1.8/puppet/application/resource.rb:222:in 
`find_or_save_resources'
        from /Library/Ruby/Site/1.8/puppet/application/resource.rb:144:in `main'
        from /Library/Ruby/Site/1.8/puppet/application.rb:317:in `run_command'
        from /Library/Ruby/Site/1.8/puppet/application.rb:309:in `run'
        from /Library/Ruby/Site/1.8/puppet/application.rb:413:in `hook'
        from /Library/Ruby/Site/1.8/puppet/application.rb:309:in `run'
        from /Library/Ruby/Site/1.8/puppet/application.rb:404:in `exit_on_fail'
        from /Library/Ruby/Site/1.8/puppet/application.rb:309:in `run'
        from /Library/Ruby/Site/1.8/puppet/util/command_line.rb:69:in `execute'
        from /usr/bin/puppet:4
</pre>

It's from this code (line 379 in 
lib/puppet/provider/nameservice/directoryservice.rb):

<pre>
          password_hash = 
converted_hash_plist['SALTED-SHA512'].string.unpack("H*")[0]
</pre>


So, I'm trying to update Puppet to be able to handle/change the user's password 
in 10.8 and I notice that the methodology I need to access/generate/change it 
has changed from 10.7 to 10.8.  Since our product uses Ruby, I'll be displaying 
the steps in Ruby.  In 10.7 I used this methodology to access the password:
 
<pre>
require 'facter/util/plist'
users_plist = Plist::parse_xml(`plutil -convert xml1 -o /dev/stdout 
/var/db/dslocal/nodes/Default/users/brit_xml.plist`)
password_hash_plist = users_plist['ShadowHashData'][0].string
IO.popen('plutil -convert xml1 -o - -', mode='r+') do |io|
  io.write password_hash_plist
  io.close_write
  @converted_plist = io.read
end


converted_hash_plist = Plist::parse_xml(@converted_plist)
password_hash = converted_hash_plist['SALTED-SHA512'].string.unpack("H*")[0]
puts password_hash
</pre>

 
This is all well and good since the value of 
converted_hash_plist['SALTED-SHA512'] was a StringIO object containing the 
binary version of the salted sha512 password.  In 10.8, all of the steps are 
the same up to a point - it seems the value of converted_hash_plist is 
different:
 
<pre>
>> pp converted_hash_plist
{"SALTED-SHA512-PBKDF2"=>
  {"salt"=>#<StringIO:0x10f31e498>,
   "entropy"=>#<StringIO:0x10f31e998>,
   "iterations"=>15174}}
=> nil
 </pre>

Indeed, this looks like a 128 byte PBKDF2 password (since the value of 
converted_hash_plist['SALTED-SHA512-PBKDF2']['entropy'].string.unpack('H*').first
 is 256 characters).  This makes sense since it looks like Apple has dabbled in 
PBKDF2 before http://people.cis.ksu.edu/~sakthi/src/data/filevault_sakthi.pdf.  
Ruby does have a PBKDF2 gem (https://github.com/emerose/pbkdf2-ruby), but of 
course there's no built-in method to handle passwords in this fashion.

Basically, the format has changed.


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