138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
/*
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
|
* unrestricted use provided that this legend is included on all tape
|
|
* media and as a part of the software program in whole or part. Users
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
|
* to license or distribute it to anyone else except as part of a product or
|
|
* program developed by the user.
|
|
*
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
|
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
|
*
|
|
* Sun RPC is provided with no support and without any obligation on the
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
|
* modification or enhancement.
|
|
*
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
|
* OR ANY PART THEREOF.
|
|
*
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
|
* or profits or other special, indirect and consequential damages, even if
|
|
* Sun has been advised of the possibility of such damages.
|
|
*
|
|
* Sun Microsystems, Inc.
|
|
* 2550 Garcia Avenue
|
|
* Mountain View, California 94043
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
/*static char *sccsid = "from: @(#)svc_auth_unix.c 1.28 88/02/08 Copyr 1984 Sun Micro";*/
|
|
/*static char *sccsid = "from: @(#)svc_auth_unix.c 2.3 88/08/01 4.0 RPCSRC";*/
|
|
static char *rcsid = "$Id$";
|
|
#endif
|
|
|
|
/*
|
|
* svc_auth_unix.c
|
|
* Handles UNIX flavor authentication parameters on the service side of rpc.
|
|
* There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
|
|
* _svcauth_unix does full blown unix style uid,gid+gids auth,
|
|
* _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
|
|
* Note: the shorthand has been gutted for efficiency.
|
|
*
|
|
* Copyright (C) 1984, Sun Microsystems, Inc.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <rpc/rpc.h>
|
|
|
|
/*
|
|
* Unix longhand authenticator
|
|
*/
|
|
enum auth_stat
|
|
_svcauth_unix(rqst, msg)
|
|
register struct svc_req *rqst;
|
|
register struct rpc_msg *msg;
|
|
{
|
|
register enum auth_stat stat;
|
|
XDR xdrs;
|
|
register struct authunix_parms *aup;
|
|
register int32_t *buf;
|
|
struct area {
|
|
struct authunix_parms area_aup;
|
|
char area_machname[MAX_MACHINE_NAME+1];
|
|
int area_gids[NGRPS];
|
|
} *area;
|
|
u_int auth_len;
|
|
int str_len, gid_len;
|
|
register int i;
|
|
|
|
area = (struct area *) rqst->rq_clntcred;
|
|
aup = &area->area_aup;
|
|
aup->aup_machname = area->area_machname;
|
|
aup->aup_gids = area->area_gids;
|
|
auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
|
|
xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
|
|
buf = XDR_INLINE(&xdrs, auth_len);
|
|
if (buf != NULL) {
|
|
aup->aup_time = IXDR_GET_LONG(buf);
|
|
str_len = IXDR_GET_U_LONG(buf);
|
|
if (str_len > MAX_MACHINE_NAME) {
|
|
stat = AUTH_BADCRED;
|
|
goto done;
|
|
}
|
|
memcpy(aup->aup_machname, (caddr_t)buf, (u_int)str_len);
|
|
aup->aup_machname[str_len] = 0;
|
|
str_len = RNDUP(str_len);
|
|
buf += str_len / sizeof (int32_t);
|
|
aup->aup_uid = IXDR_GET_LONG(buf);
|
|
aup->aup_gid = IXDR_GET_LONG(buf);
|
|
gid_len = IXDR_GET_U_LONG(buf);
|
|
if (gid_len > NGRPS) {
|
|
stat = AUTH_BADCRED;
|
|
goto done;
|
|
}
|
|
aup->aup_len = gid_len;
|
|
for (i = 0; i < gid_len; i++) {
|
|
aup->aup_gids[i] = IXDR_GET_LONG(buf);
|
|
}
|
|
/*
|
|
* five is the smallest unix credentials structure -
|
|
* timestamp, hostname len (0), uid, gid, and gids len (0).
|
|
*/
|
|
if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
|
|
(void) printf("bad auth_len gid %d str %d auth %d\n",
|
|
gid_len, str_len, auth_len);
|
|
stat = AUTH_BADCRED;
|
|
goto done;
|
|
}
|
|
} else if (! xdr_authunix_parms(&xdrs, aup)) {
|
|
xdrs.x_op = XDR_FREE;
|
|
(void)xdr_authunix_parms(&xdrs, aup);
|
|
stat = AUTH_BADCRED;
|
|
goto done;
|
|
}
|
|
rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
|
|
rqst->rq_xprt->xp_verf.oa_length = 0;
|
|
stat = AUTH_OK;
|
|
done:
|
|
XDR_DESTROY(&xdrs);
|
|
return (stat);
|
|
}
|
|
|
|
|
|
/*
|
|
* Shorthand unix authenticator
|
|
* Looks up longhand in a cache.
|
|
*/
|
|
/*ARGSUSED*/
|
|
enum auth_stat
|
|
_svcauth_short(rqst, msg)
|
|
struct svc_req *rqst;
|
|
struct rpc_msg *msg;
|
|
{
|
|
return (AUTH_REJECTEDCRED);
|
|
}
|