src/libpts/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          * Does the TNCCS connection support long message types?
  45          */
  46         bool has_long;
  47
  48         /**
  49          * Does the TNCCS connection support exclusive delivery?
  50          */
  51         bool has_excl;
  52
  53         /**
  54          * PTS object
  55          */
  56         pts_t *pts;
  57
  58         /**
  59          * PTS Component Evidence list
  60          */
  61         linked_list_t *list;
  62
  63 };
  64
  65 METHOD(imc_state_t, get_connection_id, TNC_ConnectionID,
  66         private_imc_attestation_state_t *this)
  67 {
  68         return this->connection_id;
  69 }
  70
  71 METHOD(imc_state_t, has_long, bool,
  72         private_imc_attestation_state_t *this)
  73 {
  74         return this->has_long;
  75 }
  76
  77 METHOD(imc_state_t, has_excl, bool,
  78         private_imc_attestation_state_t *this)
  79 {
  80         return this->has_excl;
  81 }
  82
  83 METHOD(imc_state_t, set_flags, void,
  84         private_imc_attestation_state_t *this, bool has_long, bool has_excl)
  85 {
  86         this->has_long = has_long;
  87         this->has_excl = has_excl;
  88 }
  89
  90 METHOD(imc_state_t, change_state, void,
  91         private_imc_attestation_state_t *this, TNC_ConnectionState new_state)
  92 {
  93         this->state = new_state;
  94 }
  95
  96
  97 METHOD(imc_state_t, destroy, void,
  98         private_imc_attestation_state_t *this)
  99 {
 100         this->pts->destroy(this->pts);
 101         this->list->destroy_offset(this->list, offsetof(pts_comp_evidence_t, destroy));
 102         free(this);
 103 }
 104
 105 METHOD(imc_attestation_state_t, get_pts, pts_t*,
 106         private_imc_attestation_state_t *this)
 107 {
 108         return this->pts;
 109 }
 110
 111 METHOD(imc_attestation_state_t, add_evidence, void,
 112         private_imc_attestation_state_t *this, pts_comp_evidence_t *evidence)
 113 {
 114         this->list->insert_last(this->list, evidence);
 115 }
 116
 117 METHOD(imc_attestation_state_t, next_evidence, bool,
 118         private_imc_attestation_state_t *this, pts_comp_evidence_t **evid)
 119 {
 120         return this->list->remove_first(this->list, (void**)evid) == SUCCESS;
 121 }
 122
 123 /**
 124  * Described in header.
 125  */
 126 imc_state_t *imc_attestation_state_create(TNC_ConnectionID connection_id)
 127 {
 128         private_imc_attestation_state_t *this;
 129         char *platform_info;
 130
 131         INIT(this,
 132                 .public = {
 133                         .interface = {
 134                                 .get_connection_id = _get_connection_id,
 135                                 .has_long = _has_long,
 136                                 .has_excl = _has_excl,
 137                                 .set_flags = _set_flags,
 138                                 .change_state = _change_state,
 139                                 .destroy = _destroy,
 140                         },
 141                         .get_pts = _get_pts,
 142                         .add_evidence = _add_evidence,
 143                         .next_evidence = _next_evidence,
 144                 },
 145                 .connection_id = connection_id,
 146                 .state = TNC_CONNECTION_STATE_CREATE,
 147                 .pts = pts_create(TRUE),
 148                 .list = linked_list_create(),
 149         );
 150
 151         platform_info = lib->settings->get_str(lib->settings,
 152                                                  "libimcv.plugins.imc-attestation.platform_info", NULL);
 153         if (platform_info)
 154         {
 155                 this->pts->set_platform_info(this->pts, platform_info);
 156         }
 157
 158         return &this->public.interface;
 159 }
 160
 161