[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/rpc/svc_auth_unix.c

Version: -  FREEBSD  -  FREEBSD10  -  FREEBSD9  -  FREEBSD92  -  FREEBSD91  -  FREEBSD90  -  FREEBSD8  -  FREEBSD82  -  FREEBSD81  -  FREEBSD80  -  FREEBSD7  -  FREEBSD74  -  FREEBSD73  -  FREEBSD72  -  FREEBSD71  -  FREEBSD70  -  FREEBSD6  -  FREEBSD64  -  FREEBSD63  -  FREEBSD62  -  FREEBSD61  -  FREEBSD60  -  FREEBSD5  -  FREEBSD55  -  FREEBSD54  -  FREEBSD53  -  FREEBSD52  -  FREEBSD51  -  FREEBSD50  -  FREEBSD4  -  FREEBSD3  -  FREEBSD22  -  cheribsd  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1  -  FREEBSD-LIBC  -  FREEBSD8-LIBC  -  FREEBSD7-LIBC  -  FREEBSD6-LIBC  -  GLIBC27 
SearchContext: -  none  -  3  -  10 

    1 /*
    2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
    3  * unrestricted use provided that this legend is included on all tape
    4  * media and as a part of the software program in whole or part.  Users
    5  * may copy or modify Sun RPC without charge, but are not authorized
    6  * to license or distribute it to anyone else except as part of a product or
    7  * program developed by the user.
    8  *
    9  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
   10  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
   11  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
   12  *
   13  * Sun RPC is provided with no support and without any obligation on the
   14  * part of Sun Microsystems, Inc. to assist in its use, correction,
   15  * modification or enhancement.
   16  *
   17  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
   18  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
   19  * OR ANY PART THEREOF.
   20  *
   21  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
   22  * or profits or other special, indirect and consequential damages, even if
   23  * Sun has been advised of the possibility of such damages.
   24  *
   25  * Sun Microsystems, Inc.
   26  * 2550 Garcia Avenue
   27  * Mountain View, California  94043
   28  */
   29 
   30 #if defined(LIBC_SCCS) && !defined(lint)
   31 static char *sccsid2 = "@(#)svc_auth_unix.c 1.28 88/02/08 Copyr 1984 Sun Micro";
   32 static char *sccsid = "@(#)svc_auth_unix.c      2.3 88/08/01 4.0 RPCSRC";
   33 #endif
   34 #include <sys/cdefs.h>
   35 __FBSDID("$FreeBSD: releng/8.0/sys/rpc/svc_auth_unix.c 194498 2009-06-19 17:10:35Z brooks $");
   36 
   37 /*
   38  * svc_auth_unix.c
   39  * Handles UNIX flavor authentication parameters on the service side of rpc.
   40  * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
   41  * _svcauth_unix does full blown unix style uid,gid+gids auth,
   42  * _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
   43  * Note: the shorthand has been gutted for efficiency.
   44  *
   45  * Copyright (C) 1984, Sun Microsystems, Inc.
   46  */
   47 
   48 #include <sys/param.h>
   49 #include <sys/lock.h>
   50 #include <sys/mutex.h>
   51 #include <sys/systm.h>
   52 #include <sys/ucred.h>
   53 
   54 #include <rpc/rpc.h>
   55 
   56 #include <rpc/rpc_com.h>
   57 
   58 #define MAX_MACHINE_NAME        255
   59 #define NGRPS                   16
   60 
   61 /*
   62  * Unix longhand authenticator
   63  */
   64 enum auth_stat
   65 _svcauth_unix(struct svc_req *rqst, struct rpc_msg *msg)
   66 {
   67         enum auth_stat stat;
   68         XDR xdrs;
   69         int32_t *buf;
   70         uint32_t time;
   71         struct xucred *xcr;
   72         u_int auth_len;
   73         size_t str_len, gid_len;
   74         u_int i;
   75 
   76         xcr = rqst->rq_clntcred;
   77         auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
   78         xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,
   79             XDR_DECODE);
   80         buf = XDR_INLINE(&xdrs, auth_len);
   81         if (buf != NULL) {
   82                 time = IXDR_GET_UINT32(buf);
   83                 str_len = (size_t)IXDR_GET_UINT32(buf);
   84                 if (str_len > MAX_MACHINE_NAME) {
   85                         stat = AUTH_BADCRED;
   86                         goto done;
   87                 }
   88                 str_len = RNDUP(str_len);
   89                 buf += str_len / sizeof (int32_t);
   90                 xcr->cr_uid = IXDR_GET_UINT32(buf);
   91                 xcr->cr_groups[0] = IXDR_GET_UINT32(buf);
   92                 gid_len = (size_t)IXDR_GET_UINT32(buf);
   93                 if (gid_len > NGRPS) {
   94                         stat = AUTH_BADCRED;
   95                         goto done;
   96                 }
   97                 for (i = 0; i < gid_len; i++) {
   98                         if (i + 1 < XU_NGROUPS)
   99                                 xcr->cr_groups[i + 1] = IXDR_GET_INT32(buf);
  100                         else
  101                                 buf++;
  102                 }
  103                 if (gid_len + 1 > XU_NGROUPS)
  104                         xcr->cr_ngroups = XU_NGROUPS;
  105                 else
  106                         xcr->cr_ngroups = gid_len + 1;
  107 
  108                 /*
  109                  * five is the smallest unix credentials structure -
  110                  * timestamp, hostname len (0), uid, gid, and gids len (0).
  111                  */
  112                 if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
  113                         (void) printf("bad auth_len gid %ld str %ld auth %u\n",
  114                             (long)gid_len, (long)str_len, auth_len);
  115                         stat = AUTH_BADCRED;
  116                         goto done;
  117                 }
  118         } else if (! xdr_authunix_parms(&xdrs, &time, xcr)) {
  119                 stat = AUTH_BADCRED;
  120                 goto done;
  121         }
  122 
  123         rqst->rq_verf = _null_auth;
  124         stat = AUTH_OK;
  125 done:
  126         XDR_DESTROY(&xdrs);
  127 
  128         return (stat);
  129 }
  130 
  131 
  132 /*
  133  * Shorthand unix authenticator
  134  * Looks up longhand in a cache.
  135  */
  136 /*ARGSUSED*/
  137 enum auth_stat 
  138 _svcauth_short(rqst, msg)
  139         struct svc_req *rqst;
  140         struct rpc_msg *msg;
  141 {
  142         return (AUTH_REJECTEDCRED);
  143 }

Cache object: 4599ed9fa5445d4e0b07177ebbd8ae24


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.