source4/heimdal/lib/gssapi/mech/gss_add_oid_set_member.c

   1 /*
   2  * Copyright (c) 1997 - 2001, 2003 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 "mech_locl.h"
  35
  36 /**
  37  * Add a oid to the oid set, function does not make a copy of the oid,
  38  * so the pointer to member_oid needs to be stable for the whole time
  39  * oid_set is used.
  40  *
  41  * If there is a duplicate member of the oid, the new member is not
  42  * added to to the set.
  43  *
  44  * @param minor_status minor status code.
  45  * @param member_oid member to add to the oid set
  46  * @param oid_set oid set to add the member too
  47  *
  48  * @returns a gss_error code, see gss_display_status() about printing
  49  *          the error code.
  50  *
  51  * @ingroup gssapi
  52  */
  53
  54 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
  55 gss_add_oid_set_member (OM_uint32 * minor_status,
  56                         const gss_OID member_oid,
  57                         gss_OID_set * oid_set)
  58 {
  59     gss_OID tmp;
  60     size_t n;
  61     OM_uint32 res;
  62     int present;
  63
  64     res = gss_test_oid_set_member(minor_status, member_oid, *oid_set, &present);
  65     if (res != GSS_S_COMPLETE)
  66         return res;
  67
  68     if (present) {
  69         *minor_status = 0;
  70         return GSS_S_COMPLETE;
  71     }
  72
  73     n = (*oid_set)->count + 1;
  74     tmp = realloc ((*oid_set)->elements, n * sizeof(gss_OID_desc));
  75     if (tmp == NULL) {
  76         *minor_status = ENOMEM;
  77         return GSS_S_FAILURE;
  78     }
  79     (*oid_set)->elements = tmp;
  80     (*oid_set)->count = n;
  81     (*oid_set)->elements[n-1] = *member_oid;
  82     *minor_status = 0;
  83     return GSS_S_COMPLETE;
  84 }