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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
require "set"
require "tempfile"
require "hbc/container/base"
module Hbc
class Container
class Dmg < Base
def self.me?(criteria)
!criteria.command.run("/usr/bin/hdiutil",
# realpath is a failsafe against unusual filenames
args: ["imageinfo", Pathname.new(criteria.path).realpath],
print_stderr: false).stdout.empty?
end
attr_reader :mounts
def initialize(*args)
super(*args)
@mounts = []
end
def extract
mount!
assert_mounts_found
extract_mounts
ensure
eject!
end
def mount!
plist = @command.run!("/usr/bin/hdiutil",
# realpath is a failsafe against unusual filenames
args: %w[mount -plist -nobrowse -readonly -noidme -mountrandom /tmp] + [Pathname.new(@path).realpath],
input: "y\n")
.plist
@mounts = mounts_from_plist(plist)
end
def eject!
@mounts.each do |mount|
# realpath is a failsafe against unusual filenames
mountpath = Pathname.new(mount).realpath
next unless mountpath.exist?
begin
tries ||= 3
if tries > 1
@command.run("/usr/sbin/diskutil",
args: ["eject", mountpath],
print_stderr: false)
else
@command.run("/usr/sbin/diskutil",
args: ["unmount", "force", mountpath],
print_stderr: false)
end
raise CaskError, "Failed to eject #{mountpath}" if mountpath.exist?
rescue CaskError => e
raise e if (tries -= 1).zero?
sleep 1
retry
end
end
end
private
def extract_mounts
@mounts.each(&method(:extract_mount))
end
def extract_mount(mount)
Tempfile.open(["", ".bom"]) do |bomfile|
bomfile.close
Tempfile.open(["", ".list"]) do |filelist|
filelist.write(bom_filelist_from_path(mount))
filelist.close
@command.run!("/usr/bin/mkbom", args: ["-s", "-i", filelist.path, "--", bomfile.path])
@command.run!("/usr/bin/ditto", args: ["--bom", bomfile.path, "--", mount, @cask.staged_path])
end
end
end
def bom_filelist_from_path(mount)
Dir.chdir(mount) do
Dir.glob("**/*", File::FNM_DOTMATCH).map do |path|
next if skip_path?(Pathname(path))
(path == ".") ? path : path.prepend("./")
end.compact.join("\n").concat("\n")
end
end
def skip_path?(path)
dmg_metadata?(path) || system_dir_symlink?(path)
end
# unnecessary DMG metadata
DMG_METADATA_FILES = Set.new %w[
.background
.com.apple.timemachine.donotpresent
.com.apple.timemachine.supported
.DocumentRevisions-V100
.DS_Store
.fseventsd
.MobileBackups
.Spotlight-V100
.TemporaryItems
.Trashes
.VolumeIcon.icns
].freeze
def dmg_metadata?(path)
relative_root = path.sub(%r{/.*}, "")
DMG_METADATA_FILES.include?(relative_root.basename.to_s)
end
def system_dir_symlink?(path)
# symlinks to system directories (commonly to /Applications)
path.symlink? && MacOS.system_dir?(path.readlink)
end
def mounts_from_plist(plist)
return [] unless plist.respond_to?(:fetch)
plist.fetch("system-entities", []).map { |e| e["mount-point"] }.compact
end
def assert_mounts_found
raise CaskError, "No mounts found in '#{@path}'; perhaps it is a bad DMG?" if @mounts.empty?
end
end
end
end
|
