lib/gssapi/mech/gss_buffer_set.c

   1 /*
   2  * Copyright (c) 2004, PADL Software Pty Ltd.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * 3. Neither the name of PADL Software nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include "mech_locl.h"
  34 RCSID("$Id$");
  35
  36 OM_uint32 GSSAPI_LIB_FUNCTION
  37 gss_create_empty_buffer_set
  38            (OM_uint32 * minor_status,
  39             gss_buffer_set_t *buffer_set)
  40 {
  41     gss_buffer_set_t set;
  42
  43     set = (gss_buffer_set_desc *) malloc(sizeof(*set));
  44     if (set == GSS_C_NO_BUFFER_SET) {
  45         *minor_status = ENOMEM;
  46         return GSS_S_FAILURE;
  47     }
  48
  49     set->count = 0;
  50     set->elements = NULL;
  51
  52     *buffer_set = set;
  53
  54     *minor_status = 0;
  55     return GSS_S_COMPLETE;
  56 }
  57
  58 OM_uint32 GSSAPI_LIB_FUNCTION
  59 gss_add_buffer_set_member
  60            (OM_uint32 * minor_status,
  61             const gss_buffer_t member_buffer,
  62             gss_buffer_set_t *buffer_set)
  63 {
  64     gss_buffer_set_t set;
  65     gss_buffer_t p;
  66     OM_uint32 ret;
  67
  68     if (*buffer_set == GSS_C_NO_BUFFER_SET) {
  69         ret = gss_create_empty_buffer_set(minor_status,
  70                                           buffer_set);
  71         if (ret) {
  72             return ret;
  73         }
  74     }
  75
  76     set = *buffer_set;
  77     set->elements = realloc(set->elements,
  78                             (set->count + 1) * sizeof(set->elements[0]));
  79     if (set->elements == NULL) {
  80         *minor_status = ENOMEM;
  81         return GSS_S_FAILURE;
  82     }
  83
  84     p = &set->elements[set->count];
  85
  86     p->value = malloc(member_buffer->length);
  87     if (p->value == NULL) {
  88         *minor_status = ENOMEM;
  89         return GSS_S_FAILURE;
  90     }
  91     memcpy(p->value, member_buffer->value, member_buffer->length);
  92     p->length = member_buffer->length;
  93
  94     set->count++;
  95
  96     *minor_status = 0;
  97     return GSS_S_COMPLETE;
  98 }
  99
 100 OM_uint32 GSSAPI_LIB_FUNCTION
 101 gss_release_buffer_set(OM_uint32 * minor_status,
 102                        gss_buffer_set_t *buffer_set)
 103 {
 104     int i;
 105     OM_uint32 minor;
 106
 107     *minor_status = 0;
 108
 109     if (*buffer_set == GSS_C_NO_BUFFER_SET)
 110         return GSS_S_COMPLETE;
 111
 112     for (i = 0; i < (*buffer_set)->count; i++)
 113         gss_release_buffer(&minor, &((*buffer_set)->elements[i]));
 114
 115     free((*buffer_set)->elements);
 116
 117     (*buffer_set)->elements = NULL;
 118     (*buffer_set)->count = 0;
 119
 120     free(*buffer_set);
 121     *buffer_set = GSS_C_NO_BUFFER_SET;
 122
 123     return GSS_S_COMPLETE;
 124 }
 125