src/libimcv/plugins/imc_attestation/imc_attestation_state.c

   1 /*
   2  * Copyright (C) 2011 Sansar Choinyambuu
   3  * HSR Hochschule fuer Technik Rapperswil
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2 of the License, or (at your
   8  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * for more details.
  14  */
  15
  16 #include "imc_attestation_state.h"
  17
  18 #include <utils/linked_list.h>
  19 #include <debug.h>
  20
  21 typedef struct private_imc_attestation_state_t private_imc_attestation_state_t;
  22
  23 /**
  24  * Private data of an imc_attestation_state_t object.
  25  */
  26 struct private_imc_attestation_state_t {
  27
  28         /**
  29          * Public members of imc_attestation_state_t
  30          */
  31         imc_attestation_state_t public;
  32
  33         /**
  34          * TNCCS connection ID
  35          */
  36         TNC_ConnectionID connection_id;
  37
  38         /**
  39          * TNCCS connection state
  40          */
  41         TNC_ConnectionState state;
  42
  43         /**
  44          * PTS object
  45          */
  46         pts_t *pts;
  47
  48         /**
  49          * PTS Component Evidence list
  50          */
  51         linked_list_t *list;
  52
  53 };
  54
  55 METHOD(imc_state_t, get_connection_id, TNC_ConnectionID,
  56         private_imc_attestation_state_t *this)
  57 {
  58         return this->connection_id;
  59 }
  60
  61 METHOD(imc_state_t, change_state, void,
  62         private_imc_attestation_state_t *this, TNC_ConnectionState new_state)
  63 {
  64         this->state = new_state;
  65 }
  66
  67
  68 METHOD(imc_state_t, destroy, void,
  69         private_imc_attestation_state_t *this)
  70 {
  71         this->pts->destroy(this->pts);
  72         this->list->destroy_offset(this->list, offsetof(pts_comp_evidence_t, destroy));
  73         free(this);
  74 }
  75
  76 METHOD(imc_attestation_state_t, get_pts, pts_t*,
  77         private_imc_attestation_state_t *this)
  78 {
  79         return this->pts;
  80 }
  81
  82 METHOD(imc_attestation_state_t, add_evidence, void,
  83         private_imc_attestation_state_t *this, pts_comp_evidence_t *evidence)
  84 {
  85         this->list->insert_last(this->list, evidence);
  86 }
  87
  88 METHOD(imc_attestation_state_t, get_evid_count, int,
  89         private_imc_attestation_state_t *this)
  90 {
  91         return this->list->get_count(this->list);
  92 }
  93
  94 METHOD(imc_attestation_state_t, next_evidence, pts_comp_evidence_t*,
  95         private_imc_attestation_state_t *this)
  96 {
  97         pts_comp_evidence_t *evidence;
  98
  99         if (this->list->remove_first(this->list, (void**)&evidence) == SUCCESS)
 100         {
 101                 return evidence;
 102         }
 103         else
 104         {
 105                 return NULL;
 106         }
 107 }
 108 /**
 109  * Described in header.
 110  */
 111 imc_state_t *imc_attestation_state_create(TNC_ConnectionID connection_id)
 112 {
 113         private_imc_attestation_state_t *this;
 114         char *platform_info;
 115
 116         INIT(this,
 117                 .public = {
 118                         .interface = {
 119                                 .get_connection_id = _get_connection_id,
 120                                 .change_state = _change_state,
 121                                 .destroy = _destroy,
 122                         },
 123                         .get_pts = _get_pts,
 124                         .add_evidence = _add_evidence,
 125                         .get_evid_count = _get_evid_count,
 126                         .next_evidence = _next_evidence,
 127                 },
 128                 .connection_id = connection_id,
 129                 .state = TNC_CONNECTION_STATE_CREATE,
 130                 .pts = pts_create(TRUE),
 131                 .list = linked_list_create(),
 132         );
 133
 134         platform_info = lib->settings->get_str(lib->settings,
 135                                                  "libimcv.plugins.imc-attestation.platform_info", NULL);
 136         if (platform_info)
 137         {
 138                 this->pts->set_platform_info(this->pts, platform_info);
 139         }
 140
 141         return &this->public.interface;
 142 }
 143
 144