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#
# Author:: John Keiser (<jkeiser@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.
#
require "chef/win32/security"
require "chef/win32/security/ace"
require "ffi"
class Chef
module ReservedNames::Win32
class Security
class ACL
include Enumerable
def initialize(pointer, owner = nil)
@struct = Chef::ReservedNames::Win32::API::Security::ACLStruct.new pointer
# Keep a reference to the actual owner of this memory so that it isn't freed out from under us
# TODO this could be avoided if we could mark a pointer's parent manually
@owner = owner
end
def self.create(aces)
aces_size = aces.inject(0) { |sum, ace| sum + ace.size }
acl_size = align_dword(Chef::ReservedNames::Win32::API::Security::ACLStruct.size + aces_size) # What the heck is 94???
acl = Chef::ReservedNames::Win32::Security.initialize_acl(acl_size)
aces.each { |ace| Chef::ReservedNames::Win32::Security.add_ace(acl, ace) }
acl
end
attr_reader :struct
def ==(other)
return false if length != other.length
0.upto(length - 1) do |i|
return false if self[i] != other[i]
end
return true
end
def pointer
struct.pointer
end
def [](index)
Chef::ReservedNames::Win32::Security.get_ace(self, index)
end
def delete_at(index)
Chef::ReservedNames::Win32::Security.delete_ace(self, index)
end
def each
0.upto(length - 1) { |i| yield self[i] }
end
def insert(index, *aces)
aces.reverse_each { |ace| add_ace(self, ace, index) }
end
def length
struct[:AceCount]
end
def push(*aces)
aces.each { |ace| Chef::ReservedNames::Win32::Security.add_ace(self, ace) }
end
def unshift(*aces)
aces.each { |ace| Chef::ReservedNames::Win32::Security.add_ace(self, ace, 0) }
end
def valid?
Chef::ReservedNames::Win32::Security.is_valid_acl(self)
end
def to_s
"[#{self.collect { |ace| ace.to_s }.join(", ")}]"
end
def self.align_dword(size)
(size + 4 - 1) & 0xfffffffc
end
private_class_method :align_dword
end
end
end
end
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