gss_init_sec_context.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/11.2/sys/kgssapi/gss_init_sec_context.c 244370 2012-12-18 00:25:48Z rmacklem $");
   30 
   31 #include <sys/param.h>
   32 #include <sys/kernel.h>
   33 #include <sys/kobj.h>
   34 #include <sys/lock.h>
   35 #include <sys/malloc.h>
   36 #include <sys/mutex.h>
   37 #include <sys/proc.h>
   38 
   39 #include <kgssapi/gssapi.h>
   40 #include <kgssapi/gssapi_impl.h>
   41 #include <rpc/rpc.h>
   42 
   43 #include "gssd.h"
   44 #include "kgss_if.h"
   45 
   46 OM_uint32
   47 gss_init_sec_context(OM_uint32 * minor_status,
   48     const gss_cred_id_t initiator_cred_handle,
   49     gss_ctx_id_t * context_handle,
   50     const gss_name_t target_name,
   51     const gss_OID input_mech_type,
   52     OM_uint32 req_flags,
   53     OM_uint32 time_req,
   54     const gss_channel_bindings_t input_chan_bindings,
   55     const gss_buffer_t input_token,
   56     gss_OID * actual_mech_type,
   57     gss_buffer_t output_token,
   58     OM_uint32 * ret_flags,
   59     OM_uint32 * time_rec)
   60 {
   61         struct init_sec_context_res res;
   62         struct init_sec_context_args args;
   63         enum clnt_stat stat;
   64         gss_ctx_id_t ctx = *context_handle;
   65         CLIENT *cl;
   66 
   67         *minor_status = 0;
   68 
   69         cl = kgss_gssd_client();
   70         if (cl == NULL)
   71                 return (GSS_S_FAILURE);
   72 
   73         args.uid = curthread->td_ucred->cr_uid;
   74         if  (initiator_cred_handle)
   75                 args.cred = initiator_cred_handle->handle;
   76         else
   77                 args.cred = 0;
   78         if (ctx)
   79                 args.ctx = ctx->handle;
   80         else
   81                 args.ctx = 0;
   82         args.name = target_name->handle;
   83         args.mech_type = input_mech_type;
   84         args.req_flags = req_flags;
   85         args.time_req = time_req;
   86         args.input_chan_bindings = input_chan_bindings;
   87         if (input_token)
   88                 args.input_token = *input_token;
   89         else {
   90                 args.input_token.length = 0;
   91                 args.input_token.value = NULL;
   92         }
   93 
   94         bzero(&res, sizeof(res));
   95         stat = gssd_init_sec_context_1(&args, &res, cl);
   96         CLNT_RELEASE(cl);
   97         if (stat != RPC_SUCCESS) {
   98                 *minor_status = stat;
   99                 return (GSS_S_FAILURE);
  100         }
  101 
  102         if (res.major_status != GSS_S_COMPLETE
  103             && res.major_status != GSS_S_CONTINUE_NEEDED) {
  104                 *minor_status = res.minor_status;
  105                 xdr_free((xdrproc_t) xdr_init_sec_context_res, &res);
  106                 return (res.major_status);
  107         }
  108 
  109         *minor_status = res.minor_status;
  110 
  111         if (!ctx) {
  112                 ctx = kgss_create_context(res.actual_mech_type);
  113                 if (!ctx) {
  114                         xdr_free((xdrproc_t) xdr_init_sec_context_res, &res);
  115                         *minor_status = 0;
  116                         return (GSS_S_BAD_MECH);
  117                 }
  118         }
  119         *context_handle = ctx;
  120         ctx->handle = res.ctx;
  121         if (actual_mech_type)
  122                 *actual_mech_type = KGSS_MECH_TYPE(ctx);
  123         kgss_copy_buffer(&res.output_token, output_token);
  124         if (ret_flags)
  125                 *ret_flags = res.ret_flags;
  126         if (time_rec)
  127                 *time_rec = res.time_rec;
  128 
  129         xdr_free((xdrproc_t) xdr_init_sec_context_res, &res);
  130 
  131         /*
  132          * If the context establishment is complete, export it from
  133          * userland and hand the result (which includes key material
  134          * etc.) to the kernel implementation.
  135          */
  136         if (res.major_status == GSS_S_COMPLETE)
  137                 res.major_status = kgss_transfer_context(ctx);
  138 
  139         return (res.major_status);
  140 }

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

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sys/kgssapi/gss_init_sec_context.c