The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/kgssapi/gss_wrap.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: releng/12.0/sys/kgssapi/gss_wrap.c 326279 2017-11-27 15:49:00Z pfg $");
   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_wrap(OM_uint32 *minor_status,
   46     const gss_ctx_id_t ctx,
   47     int conf_req_flag,
   48     gss_qop_t qop_req,
   49     const gss_buffer_t input_message_buffer,
   50     int *conf_state,
   51     gss_buffer_t output_message_buffer)
   52 {
   53         OM_uint32 maj_stat;
   54         struct mbuf *m;
   55 
   56         if (!ctx) {
   57                 *minor_status = 0;
   58                 return (GSS_S_NO_CONTEXT);
   59         }
   60 
   61         MGET(m, M_WAITOK, MT_DATA);
   62         if (input_message_buffer->length > MLEN)
   63                 MCLGET(m, M_WAITOK);
   64         m_append(m, input_message_buffer->length, input_message_buffer->value);
   65 
   66         maj_stat = KGSS_WRAP(ctx, minor_status, conf_req_flag, qop_req,
   67             &m, conf_state);
   68 
   69         /*
   70          * On success, m is the wrapped message, on failure, m is
   71          * freed.
   72          */
   73         if (maj_stat == GSS_S_COMPLETE) {
   74                 output_message_buffer->length = m_length(m, NULL);
   75                 output_message_buffer->value =
   76                         malloc(output_message_buffer->length,
   77                             M_GSSAPI, M_WAITOK);
   78                 m_copydata(m, 0, output_message_buffer->length,
   79                     output_message_buffer->value);
   80                 m_freem(m);
   81         }
   82 
   83         return (maj_stat);
   84 }
   85 
   86 OM_uint32
   87 gss_wrap_mbuf(OM_uint32 *minor_status, const gss_ctx_id_t ctx,
   88     int conf_req_flag, gss_qop_t qop_req, struct mbuf **mp, int *conf_state)
   89 {
   90 
   91         if (!ctx) {
   92                 *minor_status = 0;
   93                 return (GSS_S_NO_CONTEXT);
   94         }
   95 
   96         return (KGSS_WRAP(ctx, minor_status, conf_req_flag, qop_req,
   97                 mp, conf_state));
   98 }

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