src/libhydra/hydra.c

   1 /*
   2  * Copyright (C) 2010 Tobias Brunner
   3  * 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 "hydra.h"
  17
  18 #include <utils/debug.h>
  19
  20 typedef struct private_hydra_t private_hydra_t;
  21
  22 /**
  23  * Private additions to hydra_t.
  24  */
  25 struct private_hydra_t {
  26
  27         /**
  28          * Public members of hydra_t.
  29          */
  30         hydra_t public;
  31 };
  32
  33 /**
  34  * Single instance of hydra_t.
  35  */
  36 hydra_t *hydra;
  37
  38 /**
  39  * Described in header.
  40  */
  41 void libhydra_deinit()
  42 {
  43         private_hydra_t *this = (private_hydra_t*)hydra;
  44         this->public.attributes->destroy(this->public.attributes);
  45         this->public.kernel_interface->destroy(this->public.kernel_interface);
  46         free((void*)this->public.daemon);
  47         free(this);
  48         hydra = NULL;
  49 }
  50
  51 /**
  52  * Described in header.
  53  */
  54 bool libhydra_init(const char *daemon)
  55 {
  56         private_hydra_t *this;
  57
  58         INIT(this,
  59                 .public = {
  60                         .attributes = attribute_manager_create(),
  61                         .daemon = strdup(daemon ?: "libhydra"),
  62                 },
  63         );
  64         hydra = &this->public;
  65
  66         this->public.kernel_interface = kernel_interface_create();
  67
  68         if (lib->integrity &&
  69                 !lib->integrity->check(lib->integrity, "libhydra", libhydra_init))
  70         {
  71                 DBG1(DBG_LIB, "integrity check of libhydra failed");
  72                 return FALSE;
  73         }
  74         return TRUE;
  75 }
  76