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| 1 | +# |
| 2 | +# Author:: Dreamcat4 (<dreamcat4@gmail.com>) |
| 3 | +# Copyright:: Copyright (c) 2009 OpsCode, Inc. |
| 4 | +# License:: Apache License, Version 2.0 |
| 5 | +# |
| 6 | +# Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | +# you may not use this file except in compliance with the License. |
| 8 | +# You may obtain a copy of the License at |
| 9 | +# |
| 10 | +# http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | +# |
| 12 | +# Unless required by applicable law or agreed to in writing, software |
| 13 | +# distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | +# See the License for the specific language governing permissions and |
| 16 | +# limitations under the License. |
| 17 | +# |
| 18 | + |
| 19 | +class Chef |
| 20 | + class Provider |
| 21 | + class Group |
| 22 | + class Dscl < Chef::Provider::Group |
| 23 | + |
| 24 | + def dscl(*args) |
| 25 | + host = "." |
| 26 | + stdout_result = ""; stderr_result = ""; cmd = "dscl #{host} -#{args.join(' ')}" |
| 27 | + status = popen4(cmd) do |pid, stdin, stdout, stderr| |
| 28 | + stdout.each { |line| stdout_result << line } |
| 29 | + stderr.each { |line| stderr_result << line } |
| 30 | + end |
| 31 | + return [cmd, status, stdout_result, stderr_result] |
| 32 | + end |
| 33 | + |
| 34 | + def safe_dscl(*args) |
| 35 | + result = dscl(*args) |
| 36 | + return "" if ( args.first =~ /^delete/ ) && ( result[1].exitstatus != 0 ) |
| 37 | + raise(Chef::Exceptions::Group,"dscl error: #{result.inspect}") unless result[1].exitstatus == 0 |
| 38 | + raise(Chef::Exceptions::Group,"dscl error: #{result.inspect}") if result[2] =~ /No such key: / |
| 39 | + return result[2] |
| 40 | + end |
| 41 | + |
| 42 | + # This is handled in providers/group.rb by Etc.getgrnam() |
| 43 | + # def group_exists?(group) |
| 44 | + # groups = safe_dscl("list /Groups") |
| 45 | + # !! ( groups =~ Regexp.new("\n#{group}\n") ) |
| 46 | + # end |
| 47 | + |
| 48 | + # get a free GID greater than 200 |
| 49 | + def get_free_gid(search_limit=1000) |
| 50 | + gid = nil; next_gid_guess = 200 |
| 51 | + groups_gids = safe_dscl("list /Groups gid") |
| 52 | + while(next_gid_guess < search_limit + 200) |
| 53 | + if groups_gids =~ Regexp.new("#{next_gid_guess}\n") |
| 54 | + next_gid_guess += 1 |
| 55 | + else |
| 56 | + gid = next_gid_guess |
| 57 | + break |
| 58 | + end |
| 59 | + end |
| 60 | + return gid || raise("gid not found. Exhausted. Searched #{search_limit} times") |
| 61 | + end |
| 62 | + |
| 63 | + def gid_used?(gid) |
| 64 | + return false unless gid |
| 65 | + groups_gids = safe_dscl("list /Groups gid") |
| 66 | + !! ( groups_gids =~ Regexp.new("#{gid}\n") ) |
| 67 | + end |
| 68 | + |
| 69 | + def set_gid |
| 70 | + @new_resource.gid(get_free_gid) if [nil,""].include? @new_resource.gid |
| 71 | + raise(Chef::Exceptions::Group,"gid is already in use") if gid_used?(@new_resource.gid) |
| 72 | + safe_dscl("create /Groups/#{@new_resource.group_name} PrimaryGroupID #{@new_resource.gid}") |
| 73 | + end |
| 74 | + |
| 75 | + def set_members |
| 76 | + unless @new_resource.append |
| 77 | + Chef::Log.debug("#{@new_resource}: removing group members #{@current_resource.members.join(' ')}") unless @current_resource.members.empty? |
| 78 | + safe_dscl("create /Groups/#{@new_resource.group_name} GroupMembers") # clear guid list |
| 79 | + safe_dscl("create /Groups/#{@new_resource.group_name} GroupMembership") # clear user list |
| 80 | + end |
| 81 | + Chef::Log.debug("#{@new_resource}: setting group members #{@new_resource.members.join(', ')}") unless @new_resource.members.empty? |
| 82 | + safe_dscl("append /Groups/#{@new_resource.group_name} GroupMembership #{@new_resource.members.join(' ')}") |
| 83 | + end |
| 84 | + |
| 85 | + def load_current_resource |
| 86 | + super |
| 87 | + raise Chef::Exceptions::Group, "Could not find binary /usr/bin/dscl for #{@new_resource}" unless ::File.exists?("/usr/bin/dscl") |
| 88 | + end |
| 89 | + |
| 90 | + def create_group |
| 91 | + manage_group(false) |
| 92 | + end |
| 93 | + |
| 94 | + def manage_group(manage=true)# |
| 95 | + fields = [] |
| 96 | + if manage |
| 97 | + [:group_name,:gid,:members].each do |field| |
| 98 | + if @current_resource.send(field) != @new_resource.send(field) |
| 99 | + fields << field if @new_resource.send(field) |
| 100 | + end |
| 101 | + end |
| 102 | + else |
| 103 | + # create |
| 104 | + fields = [:group_name,:gid,:members] |
| 105 | + end |
| 106 | + |
| 107 | + fields.each do |field| |
| 108 | + case field |
| 109 | + when :group_name |
| 110 | + safe_dscl("create /Groups/#{@new_resource.group_name}") |
| 111 | + safe_dscl("create /Groups/#{@new_resource.group_name} Password '*'") |
| 112 | + |
| 113 | + when :gid |
| 114 | + set_gid |
| 115 | + |
| 116 | + when :members |
| 117 | + set_members |
| 118 | + end |
| 119 | + end |
| 120 | + end |
| 121 | + |
| 122 | + def remove_group |
| 123 | + safe_dscl("delete /Groups/#{@new_resource.group_name}") |
| 124 | + end |
| 125 | + end |
| 126 | + end |
| 127 | + end |
| 128 | +end |
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