src/libpts/libpts.c

   1 /*
   2  * Copyright (C) 2011 Andreas Steffen, HSR Hochschule fuer Technik Rapperswil
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the
   6  * Free Software Foundation; either version 2 of the License, or (at your
   7  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  11  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * for more details.
  13  */
  14
  15 #include "libpts.h"
  16 #include "tcg/tcg_attr.h"
  17 #include "pts/components/pts_component.h"
  18 #include "pts/components/pts_component_manager.h"
  19 #include "pts/components/tcg/tcg_comp_func_name.h"
  20 #include "pts/components/ita/ita_comp_func_name.h"
  21 #include "pts/components/ita/ita_comp_ima.h"
  22 #include "pts/components/ita/ita_comp_tboot.h"
  23 #include "pts/components/ita/ita_comp_tgrub.h"
  24
  25 #include <imcv.h>
  26 #include <utils/debug.h>
  27
  28 /**
  29  * PTS Functional Component manager
  30  */
  31 pts_component_manager_t *pts_components;
  32
  33 /**
  34  * Reference count for IMC/IMV instances
  35  */
  36 static refcount_t libpts_ref = 0;
  37
  38 /**
  39  * Described in header.
  40  */
  41 bool libpts_init(void)
  42 {
  43         if (libpts_ref == 0)
  44         {
  45                 if (!imcv_pa_tnc_attributes)
  46                 {
  47                         return FALSE;
  48                 }
  49                 imcv_pa_tnc_attributes->add_vendor(imcv_pa_tnc_attributes, PEN_TCG,
  50                                                         tcg_attr_create_from_data, tcg_attr_names);
  51
  52                 pts_components = pts_component_manager_create();
  53                 pts_components->add_vendor(pts_components, PEN_TCG,
  54                                         pts_tcg_comp_func_names, PTS_TCG_QUALIFIER_TYPE_SIZE,
  55                                         pts_tcg_qualifier_flag_names, pts_tcg_qualifier_type_names);
  56                 pts_components->add_vendor(pts_components, PEN_ITA,
  57                                         pts_ita_comp_func_names, PTS_ITA_QUALIFIER_TYPE_SIZE,
  58                                         pts_ita_qualifier_flag_names, pts_ita_qualifier_type_names);
  59
  60                 pts_components->add_component(pts_components, PEN_ITA,
  61                                                                           PTS_ITA_COMP_FUNC_NAME_TGRUB,
  62                                                                           pts_ita_comp_tgrub_create);
  63                 pts_components->add_component(pts_components, PEN_ITA,
  64                                                                           PTS_ITA_COMP_FUNC_NAME_TBOOT,
  65                                                                           pts_ita_comp_tboot_create);
  66                 pts_components->add_component(pts_components, PEN_ITA,
  67                                                                           PTS_ITA_COMP_FUNC_NAME_IMA,
  68                                                                           pts_ita_comp_ima_create);
  69
  70                 DBG1(DBG_LIB, "libpts initialized");
  71         }
  72         ref_get(&libpts_ref);
  73
  74         return TRUE;
  75 }
  76
  77 /**
  78  * Described in header.
  79  */
  80 void libpts_deinit(void)
  81 {
  82         if (ref_put(&libpts_ref))
  83         {
  84                 pts_components->remove_vendor(pts_components, PEN_TCG);
  85                 pts_components->remove_vendor(pts_components, PEN_ITA);
  86                 pts_components->destroy(pts_components);
  87
  88                 if (!imcv_pa_tnc_attributes)
  89                 {
  90                         return;
  91                 }
  92                 imcv_pa_tnc_attributes->remove_vendor(imcv_pa_tnc_attributes, PEN_TCG);
  93                 DBG1(DBG_LIB, "libpts terminated");
  94         }
  95 }
  96