gss_unwrap.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
    5  * Authors: Doug Rabson <dfr@rabson.org>
    6  * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
    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  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   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  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 #include <sys/param.h>
   34 #include <sys/kernel.h>
   35 #include <sys/kobj.h>
   36 #include <sys/malloc.h>
   37 #include <sys/mbuf.h>
   38 
   39 #include <kgssapi/gssapi.h>
   40 #include <kgssapi/gssapi_impl.h>
   41 
   42 #include "kgss_if.h"
   43 
   44 OM_uint32
   45 gss_unwrap(OM_uint32 *minor_status,
   46     const gss_ctx_id_t ctx,
   47     const gss_buffer_t input_message_buffer,
   48     gss_buffer_t output_message_buffer,
   49     int *conf_state,
   50     gss_qop_t *qop_state)
   51 {
   52         OM_uint32 maj_stat;
   53         struct mbuf *m;
   54 
   55         if (!ctx) {
   56                 *minor_status = 0;
   57                 return (GSS_S_NO_CONTEXT);
   58         }
   59 
   60         MGET(m, M_WAITOK, MT_DATA);
   61         if (input_message_buffer->length > MLEN)
   62                 MCLGET(m, M_WAITOK);
   63         m_append(m, input_message_buffer->length, input_message_buffer->value);
   64 
   65         maj_stat = KGSS_UNWRAP(ctx, minor_status, &m, conf_state, qop_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_unwrap_mbuf(OM_uint32 *minor_status,
   86     const gss_ctx_id_t ctx,
   87     struct mbuf **mp,
   88     int *conf_state,
   89     gss_qop_t *qop_state)
   90 {
   91 
   92         if (!ctx) {
   93                 *minor_status = 0;
   94                 return (GSS_S_NO_CONTEXT);
   95         }
   96 
   97         return (KGSS_UNWRAP(ctx, minor_status, mp, conf_state, qop_state));
   98 }
   99

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FreeBSD/Linux Kernel Cross Reference sys/kgssapi/gss_unwrap.c

FreeBSD/Linux Kernel Cross Reference
sys/kgssapi/gss_unwrap.c