src/libimcv/swid/swid_tag.c

   1 /*
   2  * Copyright (C) 2013-2014 Andreas Steffen
   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 "swid_tag.h"
  17
  18 typedef struct private_swid_tag_t private_swid_tag_t;
  19
  20 /**
  21  * Private data of a swid_tag_t object.
  22  *
  23  */
  24 struct private_swid_tag_t {
  25
  26         /**
  27          * Public swid_tag_t interface.
  28          */
  29         swid_tag_t public;
  30
  31         /**
  32          * UTF-8 XML encoding of SWID tag
  33          */
  34         chunk_t encoding;
  35
  36         /**
  37          * Optional Tag Identifier Instance ID
  38          */
  39         chunk_t instance_id;
  40
  41         /**
  42          * Reference count
  43          */
  44         refcount_t ref;
  45 };
  46
  47 METHOD(swid_tag_t, get_encoding, chunk_t,
  48         private_swid_tag_t *this)
  49 {
  50         return this->encoding;
  51 }
  52
  53 METHOD(swid_tag_t, get_instance_id, chunk_t,
  54         private_swid_tag_t *this)
  55 {
  56         return this->instance_id;
  57 }
  58
  59 METHOD(swid_tag_t, get_ref, swid_tag_t*,
  60         private_swid_tag_t *this)
  61 {
  62         ref_get(&this->ref);
  63         return &this->public;
  64 }
  65
  66 METHOD(swid_tag_t, destroy, void,
  67         private_swid_tag_t *this)
  68 {
  69         if (ref_put(&this->ref))
  70         {
  71                 free(this->encoding.ptr);
  72                 free(this->instance_id.ptr);
  73                 free(this);
  74         }
  75 }
  76
  77 /**
  78  * See header
  79  */
  80 swid_tag_t *swid_tag_create(chunk_t encoding, chunk_t instance_id)
  81 {
  82         private_swid_tag_t *this;
  83
  84         INIT(this,
  85                 .public = {
  86                         .get_encoding = _get_encoding,
  87                         .get_instance_id = _get_instance_id,
  88                         .get_ref = _get_ref,
  89                         .destroy = _destroy,
  90                 },
  91                 .encoding = chunk_clone(encoding),
  92                 .ref = 1,
  93         );
  94
  95         if (instance_id.len > 0)
  96         {
  97                 this->instance_id = chunk_clone(instance_id);
  98         }
  99
 100         return &this->public;
 101 }
 102