sys/kgssapi/gss_wrap.c

   1 /*-
   2  * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
   3  * Authors: Doug Rabson <dfr@rabson.org>
   4  * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
   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  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 __FBSDID("$FreeBSD$");
  30
  31 #include <sys/param.h>
  32 #include <sys/kernel.h>
  33 #include <sys/kobj.h>
  34 #include <sys/malloc.h>
  35 #include <sys/mbuf.h>
  36
  37 #include <kgssapi/gssapi.h>
  38 #include <kgssapi/gssapi_impl.h>
  39
  40 #include "kgss_if.h"
  41
  42 OM_uint32
  43 gss_wrap(OM_uint32 *minor_status,
  44     const gss_ctx_id_t ctx,
  45     int conf_req_flag,
  46     gss_qop_t qop_req,
  47     const gss_buffer_t input_message_buffer,
  48     int *conf_state,
  49     gss_buffer_t output_message_buffer)
  50 {
  51         OM_uint32 maj_stat;
  52         struct mbuf *m;
  53
  54         if (!ctx) {
  55                 *minor_status = 0;
  56                 return (GSS_S_NO_CONTEXT);
  57         }
  58
  59         MGET(m, M_WAITOK, MT_DATA);
  60         if (input_message_buffer->length > MLEN)
  61                 MCLGET(m, M_WAITOK);
  62         m_append(m, input_message_buffer->length, input_message_buffer->value);
  63
  64         maj_stat = KGSS_WRAP(ctx, minor_status, conf_req_flag, qop_req,
  65             &m, conf_state);
  66
  67         /*
  68          * On success, m is the wrapped message, on failure, m is
  69          * freed.
  70          */
  71         if (maj_stat == GSS_S_COMPLETE) {
  72                 output_message_buffer->length = m_length(m, NULL);
  73                 output_message_buffer->value =
  74                         malloc(output_message_buffer->length,
  75                             M_GSSAPI, M_WAITOK);
  76                 m_copydata(m, 0, output_message_buffer->length,
  77                     output_message_buffer->value);
  78                 m_freem(m);
  79         }
  80
  81         return (maj_stat);
  82 }
  83
  84 OM_uint32
  85 gss_wrap_mbuf(OM_uint32 *minor_status, const gss_ctx_id_t ctx,
  86     int conf_req_flag, gss_qop_t qop_req, struct mbuf **mp, int *conf_state)
  87 {
  88
  89         if (!ctx) {
  90                 *minor_status = 0;
  91                 return (GSS_S_NO_CONTEXT);
  92         }
  93
  94         return (KGSS_WRAP(ctx, minor_status, conf_req_flag, qop_req,
  95                 mp, conf_state));
  96 }