Class: Chef::Provider::User::Dscl

Inherits:
Chef::Provider::User show all
Defined in:
lib/chef/provider/user/dscl.rb

Instance Attribute Summary

Attributes inherited from Chef::Provider::User

#locked, #user_exists

Attributes inherited from Chef::Provider

#current_resource, #new_resource, #node

Instance Method Summary collapse

Methods inherited from Chef::Provider::User

#action_create, #action_lock, #action_manage, #action_modify, #action_remove, #action_unlock, #compare_user, #convert_group_name, #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::User

Dynamic Method Handling

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

Instance Method Details

#check_lock ⇒ Object 



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# File 'lib/chef/provider/user/dscl.rb', line 264

def check_lock
  return @locked = locked?
end

#create_user ⇒ Object 



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# File 'lib/chef/provider/user/dscl.rb', line 184

def create_user
  manage_user(false)
end

#dscl(*args) ⇒ Object 



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# File 'lib/chef/provider/user/dscl.rb', line 27

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_uid(search_limit = 1000) ⇒ Object

get a free UID greater than 200



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# File 'lib/chef/provider/user/dscl.rb', line 52

def get_free_uid(search_limit=1000)
  uid = nil; next_uid_guess = 200
  users_uids = safe_dscl("list /Users uid")
  while(next_uid_guess < search_limit + 200)
    if users_uids =~ Regexp.new("#{next_uid_guess}\n")
      next_uid_guess += 1
    else
      uid = next_uid_guess
      break
    end
  end
  return uid || raise("uid not found. Exhausted. Searched #{search_limit} times")
end

#guid ⇒ Object 



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# File 'lib/chef/provider/user/dscl.rb', line 135

def guid
  safe_dscl("read /Users/#{@new_resource.username} GeneratedUID").gsub(/GeneratedUID: /,"").gsub!(/\n/,"")
end

#load_current_resource ⇒ Object

Raises:



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# File 'lib/chef/provider/user/dscl.rb', line 179

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

#lock_user ⇒ Object 



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# File 'lib/chef/provider/user/dscl.rb', line 268

def lock_user
  safe_dscl("append /Users/#{@new_resource.username} AuthenticationAuthority ';DisabledUser;'")
end

#locked? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/provider/user/dscl.rb', line 256

def locked?
  if safe_dscl("read /Users/#{@new_resource.username}") =~ /AuthenticationAuthority: /
    auth_auth = safe_dscl("read /Users/#{@new_resource.username} AuthenticationAuthority")
    return !! ( auth_auth =~ /DisabledUser/ )
  end
  return false
end

#manage_user(manage = true) ⇒ Object 



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# File 'lib/chef/provider/user/dscl.rb', line 188

def manage_user(manage = true)
  fields = []
  if manage
    [:username,:comment,:uid,:gid,:home,:shell,:password].each do |field|
      if @current_resource.send(field) != @new_resource.send(field)
        fields << field if @new_resource.send(field)
      end
    end
    if @new_resource.send(:supports)[:manage_home]
      fields << :home if @new_resource.send(:home)
    end
    fields << :shell if fields.include?(:password)
  else
    # create
    fields = [:username,:comment,:uid,:gid,:home,:shell,:password]
  end
  fields.uniq!
  fields.each do |field|
    case field
    when :username
      safe_dscl("create /Users/#{@new_resource.username}")              
      
    when :comment
      safe_dscl("create /Users/#{@new_resource.username} RealName '#{@new_resource.comment}'")

    when :uid
      set_uid
      
    when :gid
      safe_dscl("create /Users/#{@new_resource.username} PrimaryGroupID '#{@new_resource.gid}'")

    when :home
      modify_home

    when :shell
      if @new_resource.password || ::File.exists?("#{@new_resource.shell}")
        safe_dscl("create /Users/#{@new_resource.username} UserShell '#{@new_resource.shell}'")
      else
        safe_dscl("create /Users/#{@new_resource.username} UserShell '/usr/bin/false'")
      end

    when :password
      modify_password
    end
  end
end

#modify_home ⇒ Object 



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# File 'lib/chef/provider/user/dscl.rb', line 78

def modify_home
  if [nil,""].include?(@new_resource.home)
    safe_dscl("delete /Users/#{@new_resource.username} NFSHomeDirectory")
  else
    if @new_resource.supports[:manage_home]
      unless @new_resource.home =~ /^\//
        raise(Chef::Exceptions::User,"invalid path spec for User: '#{@new_resource.username}', home directory: '#{@new_resource.home}'") 
      end

      ch_eq_nh = ( @current_resource.home ==  @new_resource.home )
      cur_home_exists = ::File.exists?("#{@current_resource.home}")
      new_home_exists = ::File.exists?("#{@new_resource.home}")
      ditto = false
      move = false
      
      if ch_eq_nh
        if !new_home_exists
          ditto = true
        end
      else
        if !cur_home_exists
          if !new_home_exists
            ditto = true
          end
        elsif cur_home_exists
          move = true
        end
      end

      if ditto
        skel = "/System/Library/User Template/English.lproj"
        raise(Chef::Exceptions::User,"can't find skel at: #{skel}") unless ::File.exists?(skel)
        run_command(:command => "ditto '#{skel}' '#{@new_resource.home}'")
        ::FileUtils.chown_R(@new_resource.username,@new_resource.gid.to_s,@new_resource.home)
      end

      if move
        src = @current_resource.home
        FileUtils.mkdir_p(@new_resource.home)
        files = ::Dir.glob("#{src}/*", ::File::FNM_DOTMATCH) - ["#{src}/.","#{src}/.."]
        ::FileUtils.mv(files,@new_resource.home, :force => true)
        ::FileUtils.rmdir(src)
        ::FileUtils.chown_R(@new_resource.username,@new_resource.gid.to_s,@new_resource.home)
      end
    end
    safe_dscl("create /Users/#{@new_resource.username} NFSHomeDirectory '#{@new_resource.home}'")
  end
end

#modify_password ⇒ Object 



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# File 'lib/chef/provider/user/dscl.rb', line 147

def modify_password
  if @new_resource.password
    shadow_hash = nil
    
    Chef::Log.debug("#{new_resource}: updating password")
    if osx_shadow_hash?(@new_resource.password)
      shadow_hash = @new_resource.password.upcase
    else
      salted_sha1 = nil
      if osx_salted_sha1?(@new_resource.password)
        salted_sha1 = @new_resource.password.upcase
      else
        hex_salt = ""; chars = ("0".."9").to_a + ("a".."f").to_a
        1.upto(8) { |i| hex_salt << chars[::Kernel.rand(chars.size-1)] }
        salt = [hex_salt].pack("H*")
        sha1 = ::OpenSSL::Digest::SHA1.hexdigest(salt+@new_resource.password)
        salted_sha1 = (hex_salt+sha1).upcase
      end
      shadow_hash = String.new("00000000"*155)
      shadow_hash[168] = salted_sha1
    end
    
    ::File.open("/var/db/shadow/hash/#{guid}",'w',0600) do |output|
      output.puts shadow_hash
    end
    
    unless shadow_hash_set?
      safe_dscl("append /Users/#{@new_resource.username} AuthenticationAuthority ';ShadowHash;'")
    end
  end
end

#osx_salted_sha1?(string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/provider/user/dscl.rb', line 131

def osx_salted_sha1?(string)
  return !! ( string =~ /^[[:xdigit:]]{48}$/ )
end

#osx_shadow_hash?(string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/provider/user/dscl.rb', line 127

def osx_shadow_hash?(string)
  return !! ( string =~ /^[[:xdigit:]]{1240}$/ )
end

#remove_user ⇒ Object 



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# File 'lib/chef/provider/user/dscl.rb', line 235

def remove_user
  if @new_resource.supports[:manage_home]
    # remove home directory
    if safe_dscl("read /Users/#{@new_resource.username}") =~ /NFSHomeDirectory/
      nfs_home = safe_dscl("read /Users/#{@new_resource.username} NFSHomeDirectory")
      nfs_home.gsub!(/NFSHomeDirectory: /,"").gsub!(/\n$/,"")
      FileUtils.rm_rf(nfs_home)
    end
  end
  # remove the user from its groups
  groups = []
  Etc.group do |group|
    groups << group.name if group.mem.include?(@new_resource.username)
  end
  groups.each do |group_name|
    safe_dscl("delete /Groups/#{group_name} GroupMembership '#{@new_resource.username}'")
  end
  # remove user account
  safe_dscl("delete /Users/#{@new_resource.username}")
end

#safe_dscl(*args) ⇒ Object

Raises:



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# File 'lib/chef/provider/user/dscl.rb', line 37

def safe_dscl(*args)
  result = dscl(*args)
  return "" if ( args.first =~ /^delete/ ) && ( result[1].exitstatus != 0 )
  raise(Chef::Exceptions::User,"dscl error: #{result.inspect}") unless result[1].exitstatus == 0
  raise(Chef::Exceptions::User,"dscl error: #{result.inspect}") if result[2] =~ /No such key: /
  return result[2]
end

#set_uid ⇒ Object

Raises:



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# File 'lib/chef/provider/user/dscl.rb', line 72

def set_uid
  @new_resource.uid(get_free_uid) if [nil,""].include? @new_resource.uid
  raise(Chef::Exceptions::User,"uid is already in use") if uid_used?(@new_resource.uid)
  safe_dscl("create /Users/#{@new_resource.username} UniqueID #{@new_resource.uid}")
end

#shadow_hash_set? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/provider/user/dscl.rb', line 139

def shadow_hash_set?
  if safe_dscl("read /Users/#{@new_resource.username}") =~ /AuthenticationAuthority: /
    auth_auth = safe_dscl("read /Users/#{@new_resource.username} AuthenticationAuthority")
    return !! ( auth_auth =~ /ShadowHash/ )
  end
  return false
end

#uid_used?(uid) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/provider/user/dscl.rb', line 66

def uid_used?(uid)
  return false unless uid
  users_uids = safe_dscl("list /Users uid")
  !! ( users_uids =~ Regexp.new("#{uid}\n") )
end

#unlock_user ⇒ Object 



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# File 'lib/chef/provider/user/dscl.rb', line 272

def unlock_user
  auth_auth = safe_dscl("read /Users/#{@new_resource.username} AuthenticationAuthority")
  auth_auth.gsub!(/AuthenticationAuthority: /,"").gsub!(/DisabledUser/,"").gsub!(/[; ]*$/,"")
  safe_dscl("create /Users/#{@new_resource.username} AuthenticationAuthority '#{auth_auth}'")
end