lib/gssapi/mech/gss_wrap_size_limit.c

   1 /*-
   2  * Copyright (c) 2005 Doug Rabson
   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  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  *      $FreeBSD: src/lib/libgssapi/gss_wrap_size_limit.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
  27  */
  28
  29 #include "mech_locl.h"
  30
  31 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
  32 gss_wrap_size_limit(OM_uint32 *minor_status,
  33     gss_const_ctx_id_t context_handle,
  34     int conf_req_flag,
  35     gss_qop_t qop_req,
  36     OM_uint32 req_output_size,
  37     OM_uint32 *max_input_size)
  38 {
  39         struct _gss_context *ctx = (struct _gss_context *) context_handle;
  40         gssapi_mech_interface m;
  41
  42         *max_input_size = 0;
  43         if (ctx == NULL) {
  44             *minor_status = 0;
  45             return GSS_S_NO_CONTEXT;
  46         }
  47
  48         m = ctx->gc_mech;
  49
  50         return (m->gm_wrap_size_limit(minor_status, ctx->gc_ctx,
  51                     conf_req_flag, qop_req, req_output_size, max_input_size));
  52 }