class CapNG::Print

Print Linux capabitlities.

@example

require 'capng'

@print = CapNG::Print.new
@print.caps_text(:buffer, :effective)

Constants

BUFFER: Print target into buffer varible.
STDOUT: Print target into STDOUT.

Public Class Methods

new() click to toggle source

Initalize Print class.

@return [nil]

static VALUE
rb_capng_print_initialize(VALUE self)
{
  return Qnil;
}

Public Instance Methods

caps_numeric(p1, p2) click to toggle source

Print capability as numeric.

@param rb_where_name_or_type [String or Symbol or Fixnum] Print target. @param rb_select_name_or_enum [String or Symbol or Fixnum] Select set name or constants @return [Integer]

static VALUE
rb_capng_print_caps_numeric(VALUE self, VALUE rb_where_name_or_type,
                            VALUE rb_select_name_or_enum)
{
  char* result = NULL;
  capng_select_t select = 0;
  capng_print_t print_type = 0;

  switch (TYPE(rb_where_name_or_type)) {
    case T_SYMBOL:
      print_type =
        print_name_to_print_type(RSTRING_PTR(rb_sym2str(rb_where_name_or_type)));
      break;
    case T_STRING:
      print_type = print_name_to_print_type(StringValuePtr(rb_where_name_or_type));
      break;
    case T_FIXNUM:
      print_type = NUM2INT(rb_where_name_or_type);
      break;
    default:
      rb_raise(rb_eArgError,
               "Expected a String or a Symbol instance, or a print type constant");
  }

  switch (TYPE(rb_select_name_or_enum)) {
    case T_SYMBOL:
      select =
        select_name_to_select_type(RSTRING_PTR(rb_sym2str(rb_select_name_or_enum)));
      break;
    case T_STRING:
      select = select_name_to_select_type(StringValuePtr(rb_select_name_or_enum));
      break;
    case T_FIXNUM:
      select = NUM2INT(rb_select_name_or_enum);
      break;
    default:
      rb_raise(rb_eArgError,
               "Expected a String or a Symbol instance, or a capability type constant");
  }

  switch (print_type) {
    case CAPNG_PRINT_STDOUT:
      capng_print_caps_numeric(CAPNG_PRINT_STDOUT, select);
      break;
    case CAPNG_PRINT_BUFFER:
      result = capng_print_caps_numeric(CAPNG_PRINT_BUFFER, select);
  }

  if (result)
    return rb_str_new2(result);
  else
    return rb_str_new2("none");
}

caps_text(p1, p2) click to toggle source

Print capability as text.

@param rb_where_name_or_type [String or Symbol or Fixnum] Print target. @param rb_capability_name_or_type [String or Symbol or Fixnum] Capability name or constants @return [Integer]

static VALUE
rb_capng_print_caps_text(VALUE self, VALUE rb_where_name_or_type,
                         VALUE rb_capability_name_or_type)
{
  char* result = NULL;
  capng_type_t capability_type = 0;
  capng_print_t print_type = 0;

  switch (TYPE(rb_capability_name_or_type)) {
    case T_SYMBOL:
      capability_type = capability_type_name_to_capability_type(
        RSTRING_PTR(rb_sym2str(rb_capability_name_or_type)));
      break;
    case T_STRING:
      capability_type = capability_type_name_to_capability_type(
        StringValuePtr(rb_capability_name_or_type));
      break;
    case T_FIXNUM:
      capability_type = NUM2INT(rb_capability_name_or_type);
      break;
    default:
      rb_raise(rb_eArgError,
               "Expected a String or a Symbol instance, or a capability type constant");
  }

  switch (TYPE(rb_where_name_or_type)) {
    case T_SYMBOL:
      print_type =
        print_name_to_print_type(RSTRING_PTR(rb_sym2str(rb_where_name_or_type)));
      break;
    case T_STRING:
      print_type = print_name_to_print_type(StringValuePtr(rb_where_name_or_type));
      break;
    case T_FIXNUM:
      print_type = NUM2INT(rb_where_name_or_type);
      break;
    default:
      rb_raise(rb_eArgError,
               "Expected a String or a Symbol instance, or a print type constant");
  }

  switch (print_type) {
    case CAPNG_PRINT_STDOUT:
      capng_print_caps_text(CAPNG_PRINT_STDOUT, capability_type);
      break;
    case CAPNG_PRINT_BUFFER:
      result = capng_print_caps_text(CAPNG_PRINT_BUFFER, capability_type);
  }

  if (result)
    return rb_str_new2(result);
  else
    return rb_str_new2("none");
}