lib/libgssapi/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 /* $FreeBSD$ */
  33
  34 #include <gssapi/gssapi.h>
  35 #include <errno.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38
  39 /* RCSID("$Id: gss_buffer_set.c 18885 2006-10-24 21:53:02Z lha $"); */
  40
  41 OM_uint32
  42 gss_create_empty_buffer_set(OM_uint32 * minor_status,
  43     gss_buffer_set_t *buffer_set)
  44 {
  45         gss_buffer_set_t set;
  46
  47         set = (gss_buffer_set_desc *) malloc(sizeof(*set));
  48         if (set == GSS_C_NO_BUFFER_SET) {
  49                 *minor_status = ENOMEM;
  50                 return (GSS_S_FAILURE);
  51         }
  52
  53         set->count = 0;
  54         set->elements = NULL;
  55
  56         *buffer_set = set;
  57
  58         *minor_status = 0;
  59         return (GSS_S_COMPLETE);
  60 }
  61
  62 OM_uint32
  63 gss_add_buffer_set_member(OM_uint32 * minor_status,
  64     const gss_buffer_t member_buffer, gss_buffer_set_t *buffer_set)
  65 {
  66         gss_buffer_set_t set;
  67         gss_buffer_t p;
  68         OM_uint32 ret;
  69
  70         if (*buffer_set == GSS_C_NO_BUFFER_SET) {
  71                 ret = gss_create_empty_buffer_set(minor_status,
  72                     buffer_set);
  73                 if (ret) {
  74                         return (ret);
  75                 }
  76         }
  77
  78         set = *buffer_set;
  79         set->elements = realloc(set->elements,
  80             (set->count + 1) * sizeof(set->elements[0]));
  81         if (set->elements == NULL) {
  82                 *minor_status = ENOMEM;
  83                 return (GSS_S_FAILURE);
  84         }
  85
  86         p = &set->elements[set->count];
  87
  88         p->value = malloc(member_buffer->length);
  89         if (p->value == NULL) {
  90                 *minor_status = ENOMEM;
  91                 return (GSS_S_FAILURE);
  92         }
  93         memcpy(p->value, member_buffer->value, member_buffer->length);
  94         p->length = member_buffer->length;
  95
  96         set->count++;
  97
  98         *minor_status = 0;
  99         return (GSS_S_COMPLETE);
 100 }
 101
 102 OM_uint32
 103 gss_release_buffer_set(OM_uint32 * minor_status, gss_buffer_set_t *buffer_set)
 104 {
 105         size_t i;
 106         OM_uint32 minor;
 107
 108         *minor_status = 0;
 109
 110         if (*buffer_set == GSS_C_NO_BUFFER_SET)
 111                 return (GSS_S_COMPLETE);
 112
 113         for (i = 0; i < (*buffer_set)->count; i++)
 114                 gss_release_buffer(&minor, &((*buffer_set)->elements[i]));
 115
 116         free((*buffer_set)->elements);
 117
 118         (*buffer_set)->elements = NULL;
 119         (*buffer_set)->count = 0;
 120
 121         free(*buffer_set);
 122         *buffer_set = GSS_C_NO_BUFFER_SET;
 123
 124         return (GSS_S_COMPLETE);
 125 }
 126