lib/hx509/ks_null.c

   1 /*
   2  * Copyright (c) 2005 - 2006 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "hx_locl.h"
  35
  36
  37 static int
  38 null_init(hx509_context context,
  39           hx509_certs certs, void **data, int flags,
  40           const char *residue, hx509_lock lock)
  41 {
  42     *data = NULL;
  43     return 0;
  44 }
  45
  46 static int
  47 null_free(hx509_certs certs, void *data)
  48 {
  49     assert(data == NULL);
  50     return 0;
  51 }
  52
  53 static int
  54 null_iter_start(hx509_context context,
  55                 hx509_certs certs, void *data, void **cursor)
  56 {
  57     *cursor = NULL;
  58     return 0;
  59 }
  60
  61 static int
  62 null_iter(hx509_context context,
  63           hx509_certs certs, void *data, void *iter, hx509_cert *cert)
  64 {
  65     *cert = NULL;
  66     return ENOENT;
  67 }
  68
  69 static int
  70 null_iter_end(hx509_context context,
  71               hx509_certs certs,
  72               void *data,
  73               void *cursor)
  74 {
  75     assert(cursor == NULL);
  76     return 0;
  77 }
  78
  79
  80 struct hx509_keyset_ops keyset_null = {
  81     "NULL",
  82     0,
  83     null_init,
  84     NULL,
  85     null_free,
  86     NULL,
  87     NULL,
  88     null_iter_start,
  89     null_iter,
  90     null_iter_end
  91 };
  92
  93 void
  94 _hx509_ks_null_register(hx509_context context)
  95 {
  96     _hx509_ks_register(context, &keyset_null);
  97 }