Class: Chef::Provider::Group::Dscl

Inherits:
Chef::Provider::Group show all
Defined in:
lib/chef/provider/group/dscl.rb

Instance Attribute Summary

Attributes inherited from Chef::Provider::Group

#group_exists

Attributes inherited from Chef::Provider

#current_resource, #new_resource, #node

Instance Method Summary collapse

Methods inherited from Chef::Provider::Group

#action_create, #action_manage, #action_modify, #action_remove, #compare_group, #initialize

Methods included from Mixin::Command

handle_command_failures, not_if, only_if, output_of_command, popen4, run_command, run_command_with_systems_locale

Methods inherited from Chef::Provider

#action_nothing, build_from_file, #initialize

Methods included from Mixin::ConvertToClassName

#convert_to_class_name, #convert_to_snake_case, #filename_to_qualified_string

Methods included from Mixin::RecipeDefinitionDSLCore

#method_missing

Methods included from Mixin::Language

#data_bag, #data_bag_item, #platform?, #search, #value_for_platform

Constructor Details

This class inherits a constructor from Chef::Provider::Group

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Chef::Mixin::RecipeDefinitionDSLCore

Instance Method Details

#create_group ⇒ Object 



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# File 'lib/chef/provider/group/dscl.rb', line 90

def create_group
  manage_group(false)
end

#dscl(*args) ⇒ Object 



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# 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

#get_free_gid(search_limit = 1000) ⇒ Object

get a free GID greater than 200



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# 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("#{next_gid_guess}\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) ⇒ Boolean

Returns:

  • (Boolean) 


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# 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("#{gid}\n") )
end

#load_current_resource ⇒ Object

Raises:



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# File 'lib/chef/provider/group/dscl.rb', line 85

def load_current_resource
  super
  raise Chef::Exceptions::Group, "Could not find binary /usr/bin/dscl for #{@new_resource}" unless ::File.exists?("/usr/bin/dscl")
end

#manage_group(manage = true) ⇒ Object 



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# File 'lib/chef/provider/group/dscl.rb', line 94

def manage_group(manage=true)#
  fields = []
  if manage
    [:group_name,:gid,:members].each do |field|
      if @current_resource.send(field) != @new_resource.send(field)
        fields << field if @new_resource.send(field)
      end
    end
  else
    # create
    fields = [:group_name,:gid,:members]
  end

  fields.each do |field|
    case field
    when :group_name
      safe_dscl("create /Groups/#{@new_resource.group_name}")
      safe_dscl("create /Groups/#{@new_resource.group_name} Password '*'")
      
    when :gid
      set_gid
      
    when :members
      set_members
    end
  end
end

#remove_group ⇒ Object 



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# File 'lib/chef/provider/group/dscl.rb', line 122

def remove_group
  safe_dscl("delete /Groups/#{@new_resource.group_name}")
end

#safe_dscl(*args) ⇒ Object

Raises:



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# 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 ⇒ Object

Raises:



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# 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 ⇒ Object 



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# 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
  Chef::Log.debug("#{@new_resource}: setting group members #{@new_resource.members.join(', ')}") unless @new_resource.members.empty?
  safe_dscl("append /Groups/#{@new_resource.group_name} GroupMembership #{@new_resource.members.join(' ')}")
end