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Chef::Provider::Group::Dscl

Public Instance Methods

create_group() click to toggle source
# File lib/chef/provider/group/dscl.rb, line 100
def create_group
  dscl_create_group
  set_gid
  set_members
end
define_resource_requirements() click to toggle source
# File lib/chef/provider/group/dscl.rb, line 87
def define_resource_requirements
  super
  requirements.assert(:all_actions) do |a| 
    a.assertion { ::File.exists?("/usr/bin/dscl") } 
    a.failure_message Chef::Exceptions::Group, "Could not find binary /usr/bin/dscl for #{@new_resource.name}"
    # No whyrun alternative: this component should be available in the base install of any given system that uses it
  end
end
dscl(*args) click to toggle source
# File lib/chef/provider/group/dscl.rb, line 24
def dscl(*args)
  host = "."
  stdout_result = ""; stderr_result = ""; cmd = "dscl #{host} -#{args.join(' ')}"
  status = popen4(cmd) do |pid, stdin, stdout, stderr|
    stdout.each { |line| stdout_result << line }
    stderr.each { |line| stderr_result << line }
  end
  return [cmd, status, stdout_result, stderr_result]
end
dscl_create_group() click to toggle source
# File lib/chef/provider/group/dscl.rb, line 118
def dscl_create_group
  safe_dscl("create /Groups/#{@new_resource.group_name}")
  safe_dscl("create /Groups/#{@new_resource.group_name} Password '*'")
end
get_free_gid(search_limit=1000) click to toggle source

get a free GID greater than 200

# File lib/chef/provider/group/dscl.rb, line 49
def get_free_gid(search_limit=1000)
  gid = nil; next_gid_guess = 200
  groups_gids = safe_dscl("list /Groups gid")
  while(next_gid_guess < search_limit + 200)
    if groups_gids =~ Regexp.new("#{Regexp.escape(next_gid_guess.to_s)}\n")
      next_gid_guess += 1
    else
      gid = next_gid_guess
      break
    end
  end
  return gid || raise("gid not found. Exhausted. Searched #{search_limit} times")
end
gid_used?(gid) click to toggle source
# File lib/chef/provider/group/dscl.rb, line 63
def gid_used?(gid)
  return false unless gid
  groups_gids = safe_dscl("list /Groups gid")
  !! ( groups_gids =~ Regexp.new("#{Regexp.escape(gid.to_s)}\n") )
end
load_current_resource() click to toggle source
# File lib/chef/provider/group/dscl.rb, line 96
def load_current_resource
  super
end
manage_group() click to toggle source
# File lib/chef/provider/group/dscl.rb, line 106
def manage_group
  if @new_resource.group_name && (@current_resource.group_name != @new_resource.group_name)
    dscl_create_group
  end
  if @new_resource.gid && (@current_resource.gid != @new_resource.gid)
    set_gid
  end
  if @new_resource.members && (@current_resource.members != @new_resource.members)
    set_members
  end
end
remove_group() click to toggle source
# File lib/chef/provider/group/dscl.rb, line 123
def remove_group
  safe_dscl("delete /Groups/#{@new_resource.group_name}")
end
safe_dscl(*args) click to toggle source
# File lib/chef/provider/group/dscl.rb, line 34
def safe_dscl(*args)
  result = dscl(*args)
  return "" if ( args.first =~ /^delete/ ) && ( result[1].exitstatus != 0 )
  raise(Chef::Exceptions::Group,"dscl error: #{result.inspect}") unless result[1].exitstatus == 0
  raise(Chef::Exceptions::Group,"dscl error: #{result.inspect}") if result[2] =~ /No such key: /
  return result[2]
end
set_gid() click to toggle source
# File lib/chef/provider/group/dscl.rb, line 69
def set_gid
  @new_resource.gid(get_free_gid) if [nil,""].include? @new_resource.gid
  raise(Chef::Exceptions::Group,"gid is already in use") if gid_used?(@new_resource.gid)
  safe_dscl("create /Groups/#{@new_resource.group_name} PrimaryGroupID #{@new_resource.gid}")
end
set_members() click to toggle source
# File lib/chef/provider/group/dscl.rb, line 75
def set_members
  unless @new_resource.append
    Chef::Log.debug("#{@new_resource} removing group members #{@current_resource.members.join(' ')}") unless @current_resource.members.empty?
    safe_dscl("create /Groups/#{@new_resource.group_name} GroupMembers ''") # clear guid list
    safe_dscl("create /Groups/#{@new_resource.group_name} GroupMembership ''") # clear user list
  end
  unless @new_resource.members.empty?
    Chef::Log.debug("#{@new_resource} setting group members #{@new_resource.members.join(', ')}")
    safe_dscl("append /Groups/#{@new_resource.group_name} GroupMembership #{@new_resource.members.join(' ')}")
  end
end

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