blob: 36936f9578e2fa54cb7b4bea46bba844f7268b69 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
#
# Author:: Joshua Timberman (<joshua@chef.io>)
# Author:: Graeme Mathieson (<mathie@woss.name>)
#
# Copyright:: Copyright (c) Chef Software Inc.
# Copyright:: Copyright (c) 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.
#
# Ported from the homebrew cookbook's Homebrew::Mixin owner helpers
#
# This lives here in Chef::Mixin because Chef's namespacing makes it
# awkward to use modules elsewhere (e.g., chef/provider/package/homebrew/owner)
require_relative "shell_out"
require "etc" unless defined?(Etc)
class Chef
module Mixin
module HomebrewUser
include Chef::Mixin::ShellOut
##
# This tries to find the user to execute brew as. If a user is provided, that overrides the brew
# executable user. It is an error condition if the brew executable owner is root or we cannot find
# the brew executable.
# @param [String, Integer] provided_user
# @return [Integer] UID of the user
def find_homebrew_uid(provided_user = nil)
# They could provide us a user name or a UID
if provided_user
return provided_user if provided_user.is_a? Integer
return Etc.getpwnam(provided_user).uid
end
@homebrew_owner_uid ||= calculate_owner
@homebrew_owner_uid
end
# Use find_homebrew_uid to return the UID and then lookup the
# name from that UID because sometimes you want the name not the UID
# @param [String, Integer] provided_user
# @return [String] username
def find_homebrew_username(provided_user = nil)
@homebrew_owner_username ||= Etc.getpwuid(find_homebrew_uid(provided_user)).name
@homebrew_owner_username
end
private
def calculate_owner
default_brew_path = "/usr/local/bin/brew"
if ::File.exist?(default_brew_path)
# By default, this follows symlinks which is what we want
owner = ::File.stat(default_brew_path).uid
elsif (brew_path = shell_out("which brew").stdout.strip) && !brew_path.empty?
owner = ::File.stat(brew_path).uid
else
raise Chef::Exceptions::CannotDetermineHomebrewOwner,
'Could not find the "brew" executable in /usr/local/bin or anywhere on the path.'
end
Chef::Log.debug "Found Homebrew owner #{Etc.getpwuid(owner).name}; executing `brew` commands as them"
owner
end
end
end
end
|
