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#
# Author:: John Keiser (<jkeiser@opscode.com>)
# Copyright:: Copyright 2011 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 "chef/win32/security"
require "chef/win32/api/security"
require "chef/win32/unicode"
require "ffi"
class Chef
module ReservedNames::Win32
class Security
class Token
def initialize(handle)
@handle = handle
end
attr_reader :handle
def enable_privileges(*privilege_names)
# Build the list of privileges we want to set
new_privileges = Chef::ReservedNames::Win32::API::Security::TOKEN_PRIVILEGES.new(
FFI::MemoryPointer.new(Chef::ReservedNames::Win32::API::Security::TOKEN_PRIVILEGES.size_with_privileges(privilege_names.length)))
new_privileges[:PrivilegeCount] = 0
privilege_names.each do |privilege_name|
luid = Chef::ReservedNames::Win32::API::Security::LUID.new
# Ignore failure (with_privileges TRIES but does not guarantee success--
# APIs down the line will fail if privilege escalation fails)
if Chef::ReservedNames::Win32::API::Security.LookupPrivilegeValueW(nil, privilege_name.to_wstring, luid)
new_privilege = new_privileges.privilege(new_privileges[:PrivilegeCount])
new_privilege[:Luid][:LowPart] = luid[:LowPart]
new_privilege[:Luid][:HighPart] = luid[:HighPart]
new_privilege[:Attributes] = Chef::ReservedNames::Win32::API::Security::SE_PRIVILEGE_ENABLED
new_privileges[:PrivilegeCount] = new_privileges[:PrivilegeCount] + 1
end
end
old_privileges = Chef::ReservedNames::Win32::Security.adjust_token_privileges(self, new_privileges)
end
def adjust_privileges(privileges_struct)
if privileges_struct[:PrivilegeCount] > 0
Chef::ReservedNames::Win32::Security::adjust_token_privileges(self, privileges_struct)
end
end
def duplicate_token(security_impersonation_level)
duplicate_token_handle = FFI::Buffer.new(:ulong)
unless Chef::ReservedNames::Win32::API::Security.DuplicateToken(handle.handle, security_impersonation_level, duplicate_token_handle)
raise Chef::ReservedNames::Win32::Error.raise!
end
Token.new(Handle.new(duplicate_token_handle.read_ulong))
end
end
end
end
end
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