01 # erfordert Ruby 1.9
02
03 require "csv"
04 require "fileutils"
05 require "set"
06
07 csv_file = ARGV.first
08 raise "specify a user CSV" if csv_file.nil?
09
10 raise "must be run as root" unless Process.uid == 0
11
12 def invalid_login?(login)
13   return false if login =~ /^[a-z0-9]+$/
14   warn "invalid login: #{login.inspect}"
15   true
16 end
17
18 $existing_logins = CSV.readlines("/etc/passwd", :col_sep => ":").map(&:first).to_set
19 def existing_login?(login)
20   return false unless $existing_logins.include?(login)
21   warn "existing login: #{login.inspect}"
22   true
23 end
24
25 new_users = CSV.readlines(csv_file).reject { |(login, _, _)| invalid_login?(login) or existing_login?(login) }
26
27 exit 0 if new_users.empty?
28
29 lines_by_file_name = {"passwd" => [], "group" => [], "shadow" => []}
30
31 new_users.each_with_index do |(login, lastname, firstname), i|
32   uid = i + 1001
33   lines_by_file_name["passwd"] << [login, "x", uid, uid, "#{lastname}, #{firstname}", "/bin/bash"].join(":")
34   lines_by_file_name["group"]  << [login, "x", uid, login].join(":")
35   lines_by_file_name["shadow"] << [login, "!", "", "", "", "", "", "", ""].join(":")
36 end
37
38 lines_by_file_name.each do |file_name, lines|
39   File.open("/etc/#{file_name}", "a") { |f| f.puts lines }
40 end
41
42 new_users.each do |(login, _, _)|
43   home_dir = "/home/#{login}"
44   FileUtils.mkdir_p(home_dir, :mode => 0700)
45   FileUtils.cp_r("/etc/skel/.", home_dir)
46 end