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#
# Author:: Adam Edwards (<adamed@chef.io>)
#
# Copyright:: Copyright (c) 2015 Chef Software, Inc.
#
# 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/api/security" if Chef::Platform.windows?
require "chef/mixin/wide_string"
class Chef
class Util
class Windows
class LogonSession
include Chef::Mixin::WideString
def initialize(username, password, domain = nil)
if username.nil? || password.nil?
raise ArgumentError, "The logon session must be initialize with non-nil user name and password parameters"
end
@username = username
@password = password
@domain = domain
@token = FFI::Buffer.new(:pointer)
@session_opened = false
@impersonating = false
end
def open
if @session_opened
raise RuntimeError, "Attempted to open a logon session that was already open."
end
username = wstring(@username)
password = wstring(@password)
domain = wstring(@domain)
status = Chef::ReservedNames::Win32::API::Security.LogonUserW(username, domain, password, Chef::ReservedNames::Win32::API::Security::LOGON32_LOGON_NETWORK, Chef::ReservedNames::Win32::API::Security::LOGON32_PROVIDER_DEFAULT, @token)
if status == 0
last_error = FFI::LastError.error
raise Chef::Exceptions::Win32APIError, "Logon for user `#{@username}` failed with Win32 status #{last_error}."
end
@session_opened = true
end
def close
validate_session_open!
if @impersonating
restore_user_context
end
Chef::ReservedNames::Win32::API::System.CloseHandle(@token.read_ulong)
@token = nil
@session_opened = false
end
def set_user_context
validate_session_open!
if ! @session_opened
raise RuntimeError, "Attempted to set the user context before opening a session."
end
if @impersonating
raise RuntimeError, "Attempt to set the user context when the user context is already set."
end
status = Chef::ReservedNames::Win32::API::Security.ImpersonateLoggedOnUser(@token.read_ulong)
if status == 0
last_error = FFI::LastError.error
raise Chef::Exceptions::Win32APIError, "Attempt to impersonate user `#{@username}` failed with Win32 status #{last_error}."
end
@impersonating = true
end
def restore_user_context
validate_session_open!
if @impersonating
status = Chef::ReservedNames::Win32::API::Security.RevertToSelf
if status == 0
last_error = FFI::LastError.error
raise Chef::Exceptions::Win32APIError, "Unable to restore user context with Win32 status #{last_error}."
end
end
@impersonating = false
end
protected
def validate_session_open!
if ! @session_opened
raise RuntimeError, "Attempted to set the user context before opening a session."
end
end
end
end
end
end
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