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#
# Author:: Dan Crosta (<dcrosta@late.am>)
# Copyright:: Copyright 2012-2016, 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
class Provider
class Group
class Groupmod < Chef::Provider::Group
provides :group, os: "netbsd"
def load_current_resource
super
%w{group user}.each do |binary|
raise Chef::Exceptions::Group, "Could not find binary /usr/sbin/#{binary} for #{new_resource}" unless ::File.exist?("/usr/sbin/#{binary}")
end
end
# Create the group
def create_group
shell_out!("group", "add", set_options)
add_group_members(new_resource.members)
end
# Manage the group when it already exists
def manage_group
if new_resource.append
members_to_be_added = [ ]
if new_resource.excluded_members && !new_resource.excluded_members.empty?
# First find out if any member needs to be removed
members_to_be_removed = [ ]
new_resource.excluded_members.each do |member|
members_to_be_removed << member if current_resource.members.include?(member)
end
unless members_to_be_removed.empty?
# We are using a magic trick to remove the groups.
reset_group_membership
# Capture the members we need to add in
# members_to_be_added to be added later on.
current_resource.members.each do |member|
members_to_be_added << member unless members_to_be_removed.include?(member)
end
end
end
if new_resource.members && !new_resource.members.empty?
new_resource.members.each do |member|
members_to_be_added << member unless current_resource.members.include?(member)
end
end
logger.trace("#{new_resource} not changing group members, the group has no members to add") if members_to_be_added.empty?
add_group_members(members_to_be_added)
else
# We are resetting the members of a group so use the same trick
reset_group_membership
logger.trace("#{new_resource} setting group members to: none") if new_resource.members.empty?
add_group_members(new_resource.members)
end
end
# Remove the group
def remove_group
shell_out!("group", "del", new_resource.group_name)
end
# Adds a list of usernames to the group using `user mod`
def add_group_members(members)
logger.trace("#{new_resource} adding members #{members.join(", ")}") unless members.empty?
members.each do |user|
shell_out!("user", "mod", "-G", new_resource.group_name, user)
end
end
# This is tricky, but works: rename the existing group to
# "<name>_bak", create a new group with the same GID and
# "<name>", then set correct members on that group
def reset_group_membership
shell_out!("group", "mod", "-n", "#{new_resource.group_name}_bak", new_resource.group_name)
shell_out!("group", "add", set_options(overwrite_gid: true))
shell_out!("group", "del", "#{new_resource.group_name}_bak")
end
# Little bit of magic as per Adam's useradd provider to pull and assign the command line flags
#
# ==== Returns
# <string>:: A string containing the option and then the quoted value
def set_options(overwrite_gid = false)
opts = []
if overwrite_gid || new_resource.gid && (current_resource.gid != new_resource.gid)
opts << "-g"
opts << new_resource.gid
end
if overwrite_gid
opts << "-o"
end
opts << new_resource.group_name
opts
end
end
end
end
end
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