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#
# Author:: Adam Edwards (<adamed@opscode.com>)
# Copyright:: Copyright (c) 2013 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/provider/windows_script'
class Chef
class Provider
class PowershellScript < Chef::Provider::WindowsScript
protected
EXIT_STATUS_EXCEPTION_HANDLER = "\ntrap [Exception] {write-error -exception ($_.Exception.Message);exit 1}".freeze
EXIT_STATUS_NORMALIZATION_SCRIPT = "\nif ($? -ne $true) { if ( $LASTEXITCODE -ne 0) {exit $LASTEXITCODE} else { exit 1 }}".freeze
EXIT_STATUS_RESET_SCRIPT = "\n$LASTEXITCODE=0".freeze
# Process exit codes are strange with PowerShell. Unless you
# explicitly call exit in Powershell, the powershell.exe
# interpreter returns only 0 for success or 1 for failure. Since
# we'd like to get specific exit codes from executable tools run
# with Powershell, we do some work using the automatic variables
# $? and $LASTEXITCODE to return the process exit code of the
# last process run in the script if it is the last command
# executed, otherwise 0 or 1 based on whether $? is set to true
# (success, where we return 0) or false (where we return 1).
def normalize_script_exit_status( code )
target_code = ( EXIT_STATUS_EXCEPTION_HANDLER +
EXIT_STATUS_RESET_SCRIPT +
"\n" +
code.to_s +
EXIT_STATUS_NORMALIZATION_SCRIPT )
convert_boolean_return = @new_resource.convert_boolean_return
self.code = <<EOH
new-variable -name interpolatedexitcode -visibility private -value $#{convert_boolean_return}
new-variable -name chefscriptresult -visibility private
$chefscriptresult = {
#{target_code}
}.invokereturnasis()
if ($interpolatedexitcode -and $chefscriptresult.gettype().name -eq 'boolean') { exit [int32](!$chefscriptresult) } else { exit 0 }
EOH
Chef::Log.debug("powershell_script provider called with script code:\n\n#{code}\n")
Chef::Log.debug("powershell_script provider will execute transformed code:\n\n#{self.code}\n")
end
public
def initialize (new_resource, run_context)
super(new_resource, run_context, '.ps1')
normalize_script_exit_status(new_resource.code)
end
def flags
default_flags = [
"-NoLogo",
"-NonInteractive",
"-NoProfile",
"-ExecutionPolicy Unrestricted",
# Powershell will hang if STDIN is redirected
# http://connect.microsoft.com/PowerShell/feedback/details/572313/powershell-exe-can-hang-if-stdin-is-redirected
"-InputFormat None",
# Must use -File rather than -Command to launch the script
# file created by the base class that contains the script
# code -- otherwise, powershell.exe does not propagate the
# error status of a failed Windows process that ran at the
# end of the script, it gets changed to '1'.
"-File"
]
interpreter_flags = default_flags.join(' ')
if ! (@new_resource.flags.nil?)
interpreter_flags = [@new_resource.flags, interpreter_flags].join(' ')
end
interpreter_flags
end
end
end
end
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