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
|
#
# Author:: Seth Chisamore (<schisamo@chef.io>)
# Copyright:: Copyright 2011-2016, Chef Software 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.
#
class Chef
module Mixin
module Securable
def owner(arg = nil)
set_or_return(
:owner,
arg,
:regex => Chef::Config[:user_valid_regex]
)
end
alias :user :owner
def group(arg = nil)
set_or_return(
:group,
arg,
:regex => Chef::Config[:group_valid_regex]
)
end
def mode(arg = nil)
set_or_return(
:mode,
arg,
:callbacks => {
"not in valid numeric range" => lambda do |m|
if m.kind_of?(String)
m =~ /^0/ || m = "0#{m}"
end
# Windows does not support the sticky or setuid bits
if Chef::Platform.windows?
Integer(m) <= 0777 && Integer(m) >= 0
else
Integer(m) <= 07777 && Integer(m) >= 0
end
end,
}
)
end
#==WindowsMacros
# Defines methods for adding attributes to a chef resource to describe
# Windows file security metadata.
#
# This module is meant to be used to extend a class (instead of
# `include`-ing). A class is automatically extended with this module when
# it includes WindowsSecurableAttributes.
# --
# TODO should this be separated into different files?
module WindowsMacros
# === rights_attribute
# "meta-method" for dynamically creating rights attributes on resources.
#
# Multiple rights attributes can be declared. This enables resources to
# have multiple rights attributes with separate runtime states.
#
# For example, +Chef::Resource::RemoteDirectory+ supports different
# rights on the directories and files by declaring separate rights
# attributes for each (rights and files_rights).
#
# ==== User Level API
# Given a resource that calls
#
# rights_attribute(:rights)
#
# Then the resource DSL could be used like this:
#
# rights :read, ["Administrators","Everyone"]
# rights :deny, "Pinky"
# rights :full_control, "Users", :applies_to_children => true
# rights :write, "John Keiser", :applies_to_children => :containers_only, :applies_to_self => false, :one_level_deep => true
#
# ==== Internal Data Structure
# rights attributes support multiple right declarations
# in a single resource block--the data will be merged
# into a single internal hash.
#
# The internal representation is a hash with the following keys:
#
# * `:permissions`: Integer of Windows permissions flags, 1..2^32
# or one of `[:full_control, :modify, :read_execute, :read, :write]`
# * `:principals`: String or Array of Strings represnting usernames on
# the system.
# * `:applies_to_children` (optional): Boolean
# * `:applies_to_self` (optional): Boolean
# * `:one_level_deep` (optional): Boolean
#
def rights_attribute(name)
# equivalent to something like:
# def rights(permissions=nil, principals=nil, args_hash=nil)
define_method(name) do |permissions = nil, principals = nil, args_hash = nil|
rights = self.instance_variable_get("@#{name}".to_sym)
unless permissions.nil?
input = {
:permissions => permissions,
:principals => principals,
}
input.merge!(args_hash) unless args_hash.nil?
validations = { :permissions => { :required => true },
:principals => { :required => true, :kind_of => [String, Array] },
:applies_to_children => { :equal_to => [ true, false, :containers_only, :objects_only ] },
:applies_to_self => { :kind_of => [ TrueClass, FalseClass ] },
:one_level_deep => { :kind_of => [ TrueClass, FalseClass ] },
}
validate(input, validations)
[ permissions ].flatten.each do |permission|
if permission.is_a?(Integer)
if permission < 0 || permission > 1 << 32
raise ArgumentError, "permissions flags must be positive and <= 32 bits (#{permission})"
end
elsif !([:full_control, :modify, :read_execute, :read, :write].include?(permission.to_sym))
raise ArgumentError, "permissions parameter must be :full_control, :modify, :read_execute, :read, :write or an integer representing Windows permission flags"
end
end
[ principals ].flatten.each do |principal|
if !principal.is_a?(String)
raise ArgumentError, "principals parameter must be a string or array of strings representing usernames"
end
end
if input[:applies_to_children] == false
if input[:applies_to_self] == false
raise ArgumentError, "'rights' attribute must specify either :applies_to_children or :applies_to_self."
end
if input[:one_level_deep] == true
raise ArgumentError, "'rights' attribute specified :one_level_deep without specifying :applies_to_children."
end
end
rights ||= []
rights << input
end
set_or_return(
name,
rights,
{}
)
end
end
end
#==WindowsSecurableAttributes
# Defines #inherits to describe Windows file security ACLs on the
# including class
module WindowsSecurableAttributes
def inherits(arg = nil)
set_or_return(
:inherits,
arg,
:kind_of => [ TrueClass, FalseClass ]
)
end
end
if RUBY_PLATFORM =~ /mswin|mingw|windows/
include WindowsSecurableAttributes
end
# Callback that fires when included; will extend the including class
# with WindowsMacros and define #rights and #deny_rights on it.
def self.included(including_class)
if RUBY_PLATFORM =~ /mswin|mingw|windows/
including_class.extend(WindowsMacros)
# create a default 'rights' attribute
including_class.rights_attribute(:rights)
including_class.rights_attribute(:deny_rights)
end
end
end
end
end
|
