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_acquire_cred.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: stable/9/sys/kgssapi/gss_acquire_cred.c 245018 2013-01-03 23:15:36Z 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 
   42 #include "gssd.h"
   43 
   44 OM_uint32
   45 gss_acquire_cred(OM_uint32 *minor_status,
   46     const gss_name_t desired_name,
   47     OM_uint32 time_req,
   48     const gss_OID_set desired_mechs,
   49     gss_cred_usage_t cred_usage,
   50     gss_cred_id_t *output_cred_handle,
   51     gss_OID_set *actual_mechs,
   52     OM_uint32 *time_rec)
   53 {
   54         OM_uint32 major_status;
   55         struct acquire_cred_res res;
   56         struct acquire_cred_args args;
   57         enum clnt_stat stat;
   58         gss_cred_id_t cred;
   59         int i;
   60         CLIENT *cl;
   61 
   62         *minor_status = 0;
   63         cl = kgss_gssd_client();
   64         if (cl == NULL)
   65                 return (GSS_S_FAILURE);
   66 
   67         args.uid = curthread->td_ucred->cr_uid;
   68         if (desired_name)
   69                 args.desired_name = desired_name->handle;
   70         else
   71                 args.desired_name = 0;
   72         args.time_req = time_req;
   73         args.desired_mechs = desired_mechs;
   74         args.cred_usage = cred_usage;
   75 
   76         bzero(&res, sizeof(res));
   77         stat = gssd_acquire_cred_1(&args, &res, cl);
   78         CLNT_RELEASE(cl);
   79         if (stat != RPC_SUCCESS) {
   80                 *minor_status = stat;
   81                 return (GSS_S_FAILURE);
   82         }
   83 
   84         if (res.major_status != GSS_S_COMPLETE) {
   85                 *minor_status = res.minor_status;
   86                 return (res.major_status);
   87         }
   88 
   89         cred = malloc(sizeof(struct _gss_cred_id_t), M_GSSAPI, M_WAITOK);
   90         cred->handle = res.output_cred;
   91         *output_cred_handle = cred;
   92         if (actual_mechs) {
   93                 major_status = gss_create_empty_oid_set(minor_status,
   94                     actual_mechs);
   95                 if (major_status)
   96                         return (major_status);
   97                 for (i = 0; i < res.actual_mechs->count; i++) {
   98                         major_status = gss_add_oid_set_member(minor_status,
   99                             &res.actual_mechs->elements[i], actual_mechs);
  100                         if (major_status)
  101                                 return (major_status);
  102                 }
  103         }
  104         if (time_rec)
  105                 *time_rec = res.time_rec;
  106 
  107         xdr_free((xdrproc_t) xdr_acquire_cred_res, &res);
  108 
  109         return (GSS_S_COMPLETE);
  110 }

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