1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
|
#
# Author:: Dreamcat4 (<dreamcat4@gmail.com>)
# Copyright:: Copyright (c) 2009 OpsCode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require 'mixlib/shellout'
require 'chef/provider/user'
require 'openssl'
require 'plist'
require 'chef/util/path_helper'
class Chef
class Provider
class User
#
# The most tricky bit of this provider is the way it deals with user passwords.
# Mac OS X has different password shadow calculations based on the version.
# < 10.7 => password shadow calculation format SALTED-SHA1
# => stored in: /var/db/shadow/hash/#{guid}
# => shadow binary length 68 bytes
# => First 4 bytes salt / Next 64 bytes shadow value
# = 10.7 => password shadow calculation format SALTED-SHA512
# => stored in: /var/db/dslocal/nodes/Default/users/#{name}.plist
# => shadow binary length 68 bytes
# => First 4 bytes salt / Next 64 bytes shadow value
# > 10.7 => password shadow calculation format SALTED-SHA512-PBKDF2
# => stored in: /var/db/dslocal/nodes/Default/users/#{name}.plist
# => shadow binary length 128 bytes
# => Salt / Iterations are stored separately in the same file
#
# This provider only supports Mac OSX versions 10.7 and above
class Dscl < Chef::Provider::User
def define_resource_requirements
super
requirements.assert(:all_actions) do |a|
a.assertion { mac_osx_version_less_than_10_7? == false }
a.failure_message(Chef::Exceptions::User, "Chef::Provider::User::Dscl only supports Mac OS X versions 10.7 and above.")
end
requirements.assert(:all_actions) do |a|
a.assertion { ::File.exists?("/usr/bin/dscl") }
a.failure_message(Chef::Exceptions::User, "Cannot find binary '/usr/bin/dscl' on the system for #{@new_resource}!")
end
requirements.assert(:all_actions) do |a|
a.assertion { ::File.exists?("/usr/bin/plutil") }
a.failure_message(Chef::Exceptions::User, "Cannot find binary '/usr/bin/plutil' on the system for #{@new_resource}!")
end
requirements.assert(:create, :modify, :manage) do |a|
a.assertion do
if @new_resource.password && mac_osx_version_greater_than_10_7?
# SALTED-SHA512 password shadow hashes are not supported on 10.8 and above.
!salted_sha512?(@new_resource.password)
else
true
end
end
a.failure_message(Chef::Exceptions::User, "SALTED-SHA512 passwords are not supported on Mac 10.8 and above. \
If you want to set the user password using shadow info make sure you specify a SALTED-SHA512-PBKDF2 shadow hash \
in 'password', with the associated 'salt' and 'iterations'.")
end
requirements.assert(:create, :modify, :manage) do |a|
a.assertion do
if @new_resource.password && mac_osx_version_greater_than_10_7? && salted_sha512_pbkdf2?(@new_resource.password)
# salt and iterations should be specified when
# SALTED-SHA512-PBKDF2 password shadow hash is given
!@new_resource.salt.nil? && !@new_resource.iterations.nil?
else
true
end
end
a.failure_message(Chef::Exceptions::User, "SALTED-SHA512-PBKDF2 shadow hash is given without associated \
'salt' and 'iterations'. Please specify 'salt' and 'iterations' in order to set the user password using shadow hash.")
end
requirements.assert(:create, :modify, :manage) do |a|
a.assertion do
if @new_resource.password && !mac_osx_version_greater_than_10_7?
# On 10.7 SALTED-SHA512-PBKDF2 is not supported
!salted_sha512_pbkdf2?(@new_resource.password)
else
true
end
end
a.failure_message(Chef::Exceptions::User, "SALTED-SHA512-PBKDF2 shadow hashes are not supported on \
Mac OS X version 10.7. Please specify a SALTED-SHA512 shadow hash in 'password' attribute to set the \
user password using shadow hash.")
end
end
def load_current_resource
@current_resource = Chef::Resource::User.new(@new_resource.username)
@current_resource.username(@new_resource.username)
@user_info = read_user_info
if @user_info
@current_resource.uid(dscl_get(@user_info, :uid))
@current_resource.gid(dscl_get(@user_info, :gid))
@current_resource.home(dscl_get(@user_info, :home))
@current_resource.shell(dscl_get(@user_info, :shell))
@current_resource.comment(dscl_get(@user_info, :comment))
@authentication_authority = dscl_get(@user_info, :auth_authority)
if @new_resource.password && dscl_get(@user_info, :password) == "********"
# A password is set. Let's get the password information from shadow file
shadow_hash_binary = dscl_get(@user_info, :shadow_hash)
# Calling shell_out directly since we want to give an input stream
shadow_hash_xml = convert_binary_plist_to_xml(shadow_hash_binary.string)
shadow_hash = Plist::parse_xml(shadow_hash_xml)
if shadow_hash["SALTED-SHA512"]
# Convert the shadow value from Base64 encoding to hex before consuming them
@password_shadow_conversion_algorithm = "SALTED-SHA512"
@current_resource.password(shadow_hash["SALTED-SHA512"].string.unpack('H*').first)
elsif shadow_hash["SALTED-SHA512-PBKDF2"]
@password_shadow_conversion_algorithm = "SALTED-SHA512-PBKDF2"
# Convert the entropy from Base64 encoding to hex before consuming them
@current_resource.password(shadow_hash["SALTED-SHA512-PBKDF2"]["entropy"].string.unpack('H*').first)
@current_resource.iterations(shadow_hash["SALTED-SHA512-PBKDF2"]["iterations"])
# Convert the salt from Base64 encoding to hex before consuming them
@current_resource.salt(shadow_hash["SALTED-SHA512-PBKDF2"]["salt"].string.unpack('H*').first)
else
raise(Chef::Exceptions::User,"Unknown shadow_hash format: #{shadow_hash.keys.join(' ')}")
end
end
convert_group_name if @new_resource.gid
else
@user_exists = false
Chef::Log.debug("#{@new_resource} user does not exist")
end
@current_resource
end
#
# Provider Actions
#
def create_user
dscl_create_user
# set_password modifies the plist file of the user directly. So update
# the password first before making any modifications to the user.
set_password
dscl_create_comment
dscl_set_uid
dscl_set_gid
dscl_set_home
dscl_set_shell
end
def manage_user
# set_password modifies the plist file of the user directly. So update
# the password first before making any modifications to the user.
set_password if diverged_password?
dscl_create_user if diverged?(:username)
dscl_create_comment if diverged?(:comment)
dscl_set_uid if diverged?(:uid)
dscl_set_gid if diverged?(:gid)
dscl_set_home if diverged?(:home)
dscl_set_shell if diverged?(:shell)
end
#
# Action Helpers
#
#
# Create a user using dscl
#
def dscl_create_user
run_dscl("create /Users/#{@new_resource.username}")
end
#
# Saves the specified Chef user `comment` into RealName attribute
# of Mac user.
#
def dscl_create_comment
run_dscl("create /Users/#{@new_resource.username} RealName '#{@new_resource.comment}'")
end
#
# Sets the user id for the user using dscl.
# If a `uid` is not specified, it finds the next available one starting
# from 200 if `system` is set, 500 otherwise.
#
def dscl_set_uid
@new_resource.uid(get_free_uid) if (@new_resource.uid.nil? || @new_resource.uid == '')
if uid_used?(@new_resource.uid)
raise(Chef::Exceptions::RequestedUIDUnavailable, "uid #{@new_resource.uid} is already in use")
end
run_dscl("create /Users/#{@new_resource.username} UniqueID #{@new_resource.uid}")
end
#
# Find the next available uid on the system. starting with 200 if `system` is set,
# 500 otherwise.
#
def get_free_uid(search_limit=1000)
uid = nil
base_uid = @new_resource.system ? 200 : 500
next_uid_guess = base_uid
users_uids = run_dscl("list /Users uid")
while(next_uid_guess < search_limit + base_uid)
if users_uids =~ Regexp.new("#{Regexp.escape(next_uid_guess.to_s)}\n")
next_uid_guess += 1
else
uid = next_uid_guess
break
end
end
return uid || raise("uid not found. Exhausted. Searched #{search_limit} times")
end
#
# Returns true if uid is in use by a different account, false otherwise.
#
def uid_used?(uid)
return false unless uid
users_uids = run_dscl("list /Users uid").split("\n")
uid_map = users_uids.inject({}) do |tmap, tuid|
x = tuid.split
tmap[x[1]] = x[0]
tmap
end
if uid_map[uid.to_s]
return true unless uid_map[uid.to_s] == @new_resource.username.to_s
end
return false
end
#
# Sets the group id for the user using dscl. Fails if a group doesn't
# exist on the system with given group id.
#
def dscl_set_gid
unless @new_resource.gid && @new_resource.gid.to_s.match(/^\d+$/)
begin
possible_gid = run_dscl("read /Groups/#{@new_resource.gid} PrimaryGroupID").split(" ").last
rescue Chef::Exceptions::DsclCommandFailed => e
raise Chef::Exceptions::GroupIDNotFound.new("Group not found for #{@new_resource.gid} when creating user #{@new_resource.username}")
end
@new_resource.gid(possible_gid) if possible_gid && possible_gid.match(/^\d+$/)
end
run_dscl("create /Users/#{@new_resource.username} PrimaryGroupID '#{@new_resource.gid}'")
end
#
# Sets the home directory for the user. If `:manage_home` is set home
# directory is managed (moved / created) for the user.
#
def dscl_set_home
if @new_resource.home.nil? || @new_resource.home.empty?
run_dscl("delete /Users/#{@new_resource.username} NFSHomeDirectory")
return
end
if @new_resource.supports[:manage_home]
validate_home_dir_specification!
if (@current_resource.home == @new_resource.home) && !new_home_exists?
ditto_home
elsif !current_home_exists? && !new_home_exists?
ditto_home
elsif current_home_exists?
move_home
end
end
run_dscl("create /Users/#{@new_resource.username} NFSHomeDirectory '#{@new_resource.home}'")
end
def validate_home_dir_specification!
unless @new_resource.home =~ /^\//
raise(Chef::Exceptions::InvalidHomeDirectory,"invalid path spec for User: '#{@new_resource.username}', home directory: '#{@new_resource.home}'")
end
end
def current_home_exists?
::File.exist?("#{@current_resource.home}")
end
def new_home_exists?
::File.exist?("#{@new_resource.home}")
end
def ditto_home
skel = "/System/Library/User Template/English.lproj"
raise(Chef::Exceptions::User,"can't find skel at: #{skel}") unless ::File.exists?(skel)
shell_out! "ditto '#{skel}' '#{@new_resource.home}'"
::FileUtils.chown_R(@new_resource.username,@new_resource.gid.to_s,@new_resource.home)
end
def move_home
Chef::Log.debug("#{@new_resource} moving #{self} home from #{@current_resource.home} to #{@new_resource.home}")
src = @current_resource.home
FileUtils.mkdir_p(@new_resource.home)
files = ::Dir.glob("#{Chef::Util::PathHelper.escape_glob(src)}/*", ::File::FNM_DOTMATCH) - ["#{src}/.","#{src}/.."]
::FileUtils.mv(files,@new_resource.home, :force => true)
::FileUtils.rmdir(src)
::FileUtils.chown_R(@new_resource.username,@new_resource.gid.to_s,@new_resource.home)
end
#
# Sets the shell for the user using dscl.
#
def dscl_set_shell
if @new_resource.shell || ::File.exists?("#{@new_resource.shell}")
run_dscl("create /Users/#{@new_resource.username} UserShell '#{@new_resource.shell}'")
else
run_dscl("create /Users/#{@new_resource.username} UserShell '/usr/bin/false'")
end
end
#
# Sets the password for the user based on given password parameters.
# Chef supports specifying plain-text passwords and password shadow
# hash data.
#
def set_password
# Return if there is no password to set
return if @new_resource.password.nil?
shadow_info = prepare_password_shadow_info
# Shadow info is saved as binary plist. Convert the info to binary plist.
shadow_info_binary = StringIO.new
command = Mixlib::ShellOut.new("plutil -convert binary1 -o - -",
:input => shadow_info.to_plist, :live_stream => shadow_info_binary)
command.run_command
if @user_info.nil?
# User is just created. read_user_info() will read the fresh information
# for the user with a cache flush. However with experimentation we've seen
# that dscl cache is not immediately updated after the creation of the user
# This is odd and needs to be investigated further.
sleep 3
@user_info = read_user_info
end
# Replace the shadow info in user's plist
dscl_set(@user_info, :shadow_hash, shadow_info_binary)
save_user_info(@user_info)
end
#
# Prepares the password shadow info based on the platform version.
#
def prepare_password_shadow_info
shadow_info = { }
entropy = nil
salt = nil
iterations = nil
if mac_osx_version_10_7?
hash_value = if salted_sha512?(@new_resource.password)
@new_resource.password
else
# Create a random 4 byte salt
salt = OpenSSL::Random.random_bytes(4)
encoded_password = OpenSSL::Digest::SHA512.hexdigest(salt + @new_resource.password)
hash_value = salt.unpack('H*').first + encoded_password
end
shadow_info["SALTED-SHA512"] = StringIO.new
shadow_info["SALTED-SHA512"].string = convert_to_binary(hash_value)
shadow_info
else
if salted_sha512_pbkdf2?(@new_resource.password)
entropy = convert_to_binary(@new_resource.password)
salt = convert_to_binary(@new_resource.salt)
iterations = @new_resource.iterations
else
salt = OpenSSL::Random.random_bytes(32)
iterations = @new_resource.iterations # Use the default if not specified by the user
entropy = OpenSSL::PKCS5::pbkdf2_hmac(
@new_resource.password,
salt,
iterations,
128,
OpenSSL::Digest::SHA512.new
)
end
pbkdf_info = { }
pbkdf_info["entropy"] = StringIO.new
pbkdf_info["entropy"].string = entropy
pbkdf_info["salt"] = StringIO.new
pbkdf_info["salt"].string = salt
pbkdf_info["iterations"] = iterations
shadow_info["SALTED-SHA512-PBKDF2"] = pbkdf_info
end
shadow_info
end
#
# Removes the user from the system after removing user from his groups
# and deleting home directory if needed.
#
def remove_user
if @new_resource.supports[:manage_home]
# Remove home directory
FileUtils.rm_rf(@current_resource.home)
end
# Remove the user from its groups
run_dscl("list /Groups").each_line do |group|
if member_of_group?(group.chomp)
run_dscl("delete /Groups/#{group.chomp} GroupMembership '#{@new_resource.username}'")
end
end
# Remove user account
run_dscl("delete /Users/#{@new_resource.username}")
end
#
# Locks the user.
#
def lock_user
run_dscl("append /Users/#{@new_resource.username} AuthenticationAuthority ';DisabledUser;'")
end
#
# Unlocks the user
#
def unlock_user
auth_string = @authentication_authority.gsub(/AuthenticationAuthority: /,"").gsub(/;DisabledUser;/,"").strip
run_dscl("create /Users/#{@new_resource.username} AuthenticationAuthority '#{auth_string}'")
end
#
# Returns true if the user is locked, false otherwise.
#
def locked?
if @authentication_authority
!!(@authentication_authority =~ /DisabledUser/ )
else
false
end
end
#
# This is the interface base User provider requires to provide idempotency.
#
def check_lock
return @locked = locked?
end
#
# Helper functions
#
#
# Returns true if the system state and desired state is different for
# given attribute.
#
def diverged?(parameter)
parameter_updated?(parameter) && (not @new_resource.send(parameter).nil?)
end
def parameter_updated?(parameter)
not (@new_resource.send(parameter) == @current_resource.send(parameter))
end
#
# We need a special check function for password since we support both
# plain text and shadow hash data.
#
# Checks if password needs update based on platform version and the
# type of the password specified.
#
def diverged_password?
return false if @new_resource.password.nil?
# Dscl provider supports both plain text passwords and shadow hashes.
if mac_osx_version_10_7?
if salted_sha512?(@new_resource.password)
diverged?(:password)
else
!salted_sha512_password_match?
end
else
# When a system is upgraded to a version 10.7+ shadow hashes of the users
# will be updated when the user logs in. So it's possible that we will have
# SALTED-SHA512 password in the current_resource. In that case we will force
# password to be updated.
return true if salted_sha512?(@current_resource.password)
if salted_sha512_pbkdf2?(@new_resource.password)
diverged?(:password) || diverged?(:salt) || diverged?(:iterations)
else
!salted_sha512_pbkdf2_password_match?
end
end
end
#
# Returns true if user is member of the specified group, false otherwise.
#
def member_of_group?(group_name)
membership_info = ""
begin
membership_info = run_dscl("read /Groups/#{group_name}")
rescue Chef::Exceptions::DsclCommandFailed
# Raised if the group doesn't contain any members
end
# Output is something like:
# GroupMembership: root admin etc
members = membership_info.split(" ")
members.shift # Get rid of GroupMembership: string
members.include?(@new_resource.username)
end
#
# DSCL Helper functions
#
# A simple map of Chef's terms to DSCL's terms.
DSCL_PROPERTY_MAP = {
:uid => "uid",
:gid => "gid",
:home => "home",
:shell => "shell",
:comment => "realname",
:password => "passwd",
:auth_authority => "authentication_authority",
:shadow_hash => "ShadowHashData"
}.freeze
# Directory where the user plist files are stored for versions 10.7 and above
USER_PLIST_DIRECTORY = "/var/db/dslocal/nodes/Default/users".freeze
#
# Reads the user plist and returns a hash keyed with DSCL properties specified
# in DSCL_PROPERTY_MAP. Return nil if the user is not found.
#
def read_user_info
user_info = nil
# We flush the cache here in order to make sure that we read fresh information
# for the user.
shell_out("dscacheutil '-flushcache'")
begin
user_plist_file = "#{USER_PLIST_DIRECTORY}/#{@new_resource.username}.plist"
user_plist_info = run_plutil("convert xml1 -o - #{user_plist_file}")
user_info = Plist::parse_xml(user_plist_info)
rescue Chef::Exceptions::PlistUtilCommandFailed
end
user_info
end
#
# Saves the given hash keyed with DSCL properties specified
# in DSCL_PROPERTY_MAP to the disk.
#
def save_user_info(user_info)
user_plist_file = "#{USER_PLIST_DIRECTORY}/#{@new_resource.username}.plist"
Plist::Emit.save_plist(user_info, user_plist_file)
run_plutil("convert binary1 #{user_plist_file}")
end
#
# Sets a value in user information hash using Chef attributes as keys.
#
def dscl_set(user_hash, key, value)
raise "Unknown dscl key #{key}" unless DSCL_PROPERTY_MAP.keys.include?(key)
user_hash[DSCL_PROPERTY_MAP[key]] = [ value ]
user_hash
end
#
# Gets a value from user information hash using Chef attributes as keys.
#
def dscl_get(user_hash, key)
raise "Unknown dscl key #{key}" unless DSCL_PROPERTY_MAP.keys.include?(key)
# DSCL values are set as arrays
value = user_hash[DSCL_PROPERTY_MAP[key]]
value.nil? ? value : value.first
end
#
# System Helpets
#
def mac_osx_version
# This provider will only be invoked on node[:platform] == "mac_os_x"
# We do not check or assert that here.
node[:platform_version]
end
def mac_osx_version_10_7?
mac_osx_version.start_with?("10.7.")
end
def mac_osx_version_less_than_10_7?
versions = mac_osx_version.split(".")
# Make integer comparison in order not to report 10.10 less than 10.7
(versions[0].to_i <= 10 && versions[1].to_i < 7)
end
def mac_osx_version_greater_than_10_7?
versions = mac_osx_version.split(".")
# Make integer comparison in order not to report 10.10 less than 10.7
(versions[0].to_i >= 10 && versions[1].to_i > 7)
end
def run_dscl(*args)
result = shell_out("dscl . -#{args.join(' ')}")
return "" if ( args.first =~ /^delete/ ) && ( result.exitstatus != 0 )
raise(Chef::Exceptions::DsclCommandFailed,"dscl error: #{result.inspect}") unless result.exitstatus == 0
raise(Chef::Exceptions::DsclCommandFailed,"dscl error: #{result.inspect}") if result.stdout =~ /No such key: /
result.stdout
end
def run_plutil(*args)
result = shell_out("plutil -#{args.join(' ')}")
raise(Chef::Exceptions::PlistUtilCommandFailed,"plutil error: #{result.inspect}") unless result.exitstatus == 0
result.stdout
end
def convert_binary_plist_to_xml(binary_plist_string)
Mixlib::ShellOut.new("plutil -convert xml1 -o - -", :input => binary_plist_string).run_command.stdout
end
def convert_to_binary(string)
string.unpack('a2'*(string.size/2)).collect { |i| i.hex.chr }.join
end
def salted_sha512?(string)
!!(string =~ /^[[:xdigit:]]{136}$/)
end
def salted_sha512_password_match?
# Salt is included in the first 4 bytes of shadow data
salt = @current_resource.password.slice(0,8)
shadow = OpenSSL::Digest::SHA512.hexdigest(convert_to_binary(salt) + @new_resource.password)
@current_resource.password == salt + shadow
end
def salted_sha512_pbkdf2?(string)
!!(string =~ /^[[:xdigit:]]{256}$/)
end
def salted_sha512_pbkdf2_password_match?
salt = convert_to_binary(@current_resource.salt)
OpenSSL::PKCS5::pbkdf2_hmac(
@new_resource.password,
salt,
@current_resource.iterations,
128,
OpenSSL::Digest::SHA512.new
).unpack('H*').first == @current_resource.password
end
end
end
end
end
|