crypto/external/bsd/heimdal/dist/lib/gssapi/mech/gss_pseudo_random.c

   1 /*      $NetBSD: gss_pseudo_random.c,v 1.1.1.2 2011/04/14 14:08:28 elric Exp $  */
   2
   3 /*
   4  * Copyright (c) 2007 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 /* Id */
  37
  38 #include "mech_locl.h"
  39
  40 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
  41 gss_pseudo_random(OM_uint32 *minor_status,
  42                   gss_ctx_id_t context,
  43                   int prf_key,
  44                   const gss_buffer_t prf_in,
  45                   ssize_t desired_output_len,
  46                   gss_buffer_t prf_out)
  47 {
  48     struct _gss_context *ctx = (struct _gss_context *) context;
  49     gssapi_mech_interface m;
  50     OM_uint32 major_status;
  51
  52     _mg_buffer_zero(prf_out);
  53     *minor_status = 0;
  54
  55     if (ctx == NULL) {
  56         *minor_status = 0;
  57         return GSS_S_NO_CONTEXT;
  58     }
  59
  60     m = ctx->gc_mech;
  61
  62     if (m->gm_pseudo_random == NULL)
  63         return GSS_S_UNAVAILABLE;
  64
  65     major_status = (*m->gm_pseudo_random)(minor_status, ctx->gc_ctx,
  66                                           prf_key, prf_in, desired_output_len,
  67                                           prf_out);
  68     if (major_status != GSS_S_COMPLETE)
  69         _gss_mg_error(m, major_status, *minor_status);
  70
  71     return major_status;
  72 }