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  * 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: releng/9.0/sys/kgssapi/gss_wrap.c 184588 2008-11-03 10:38:00Z dfr $");
   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 }

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