1 /* $NetBSD: svc_auth.c,v 1.12 2000/07/06 03:10:35 christos Exp $ */
4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
5 * unrestricted use provided that this legend is included on all tape
6 * media and as a part of the software program in whole or part. Users
7 * may copy or modify Sun RPC without charge, but are not authorized
8 * to license or distribute it to anyone else except as part of a product or
9 * program developed by the user.
11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
15 * Sun RPC is provided with no support and without any obligation on the
16 * part of Sun Microsystems, Inc. to assist in its use, correction,
17 * modification or enhancement.
19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
21 * OR ANY PART THEREOF.
23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
24 * or profits or other special, indirect and consequential damages, even if
25 * Sun has been advised of the possibility of such damages.
27 * Sun Microsystems, Inc.
29 * Mountain View, California 94043
32 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
35 #if defined(LIBC_SCCS) && !defined(lint)
36 #ident "@(#)svc_auth.c 1.16 94/04/24 SMI"
37 static char sccsid[] = "@(#)svc_auth.c 1.26 89/02/07 Copyr 1984 Sun Micro";
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
43 * svc_auth.c, Server-side rpc authenticator interface.
47 #include <sys/param.h>
49 #include <sys/mutex.h>
50 #include <sys/systm.h>
52 #include <sys/ucred.h>
56 static enum auth_stat (*_svcauth_rpcsec_gss)(struct svc_req *,
57 struct rpc_msg *) = NULL;
58 static int (*_svcauth_rpcsec_gss_getcred)(struct svc_req *,
59 struct ucred **, int *);
61 static struct svc_auth_ops svc_auth_null_ops;
64 * The call rpc message, msg has been obtained from the wire. The msg contains
65 * the raw form of credentials and verifiers. authenticate returns AUTH_OK
66 * if the msg is successfully authenticated. If AUTH_OK then the routine also
67 * does the following things:
68 * set rqst->rq_xprt->verf to the appropriate response verifier;
69 * sets rqst->rq_client_cred to the "cooked" form of the credentials.
71 * NB: rqst->rq_cxprt->verf must be pre-alloctaed;
72 * its length is set appropriately.
74 * The caller still owns and is responsible for msg->u.cmb.cred and
75 * msg->u.cmb.verf. The authentication system retains ownership of
76 * rqst->rq_client_cred, the cooked credentials.
78 * There is an assumption that any flavour less than AUTH_NULL is
82 _authenticate(struct svc_req *rqst, struct rpc_msg *msg)
87 rqst->rq_cred = msg->rm_call.cb_cred;
88 rqst->rq_auth.svc_ah_ops = &svc_auth_null_ops;
89 rqst->rq_auth.svc_ah_private = NULL;
90 cred_flavor = rqst->rq_cred.oa_flavor;
91 switch (cred_flavor) {
93 dummy = _svcauth_null(rqst, msg);
96 dummy = _svcauth_unix(rqst, msg);
99 dummy = _svcauth_short(rqst, msg);
102 if (!_svcauth_rpcsec_gss)
103 return (AUTH_REJECTEDCRED);
104 dummy = _svcauth_rpcsec_gss(rqst, msg);
110 return (AUTH_REJECTEDCRED);
114 * A set of null auth methods used by any authentication protocols
115 * that don't need to inspect or modify the message body.
118 svcauth_null_wrap(SVCAUTH *auth, struct mbuf **mp)
125 svcauth_null_unwrap(SVCAUTH *auth, struct mbuf **mp)
132 svcauth_null_release(SVCAUTH *auth)
137 static struct svc_auth_ops svc_auth_null_ops = {
140 svcauth_null_release,
145 _svcauth_null(struct svc_req *rqst, struct rpc_msg *msg)
148 rqst->rq_verf = _null_auth;
153 svc_auth_reg(int flavor,
154 enum auth_stat (*svcauth)(struct svc_req *, struct rpc_msg *),
155 int (*getcred)(struct svc_req *, struct ucred **, int *))
158 if (flavor == RPCSEC_GSS) {
159 _svcauth_rpcsec_gss = svcauth;
160 _svcauth_rpcsec_gss_getcred = getcred;
166 svc_getcred(struct svc_req *rqst, struct ucred **crp, int *flavorp)
168 struct ucred *cr = NULL;
172 flavor = rqst->rq_cred.oa_flavor;
178 xcr = (struct xucred *) rqst->rq_clntcred;
180 cr->cr_uid = cr->cr_ruid = cr->cr_svuid = xcr->cr_uid;
181 crsetgroups(cr, xcr->cr_ngroups, xcr->cr_groups);
182 cr->cr_rgid = cr->cr_svgid = cr->cr_groups[0];
183 cr->cr_prison = &prison0;
184 prison_hold(cr->cr_prison);
189 if (!_svcauth_rpcsec_gss_getcred)
191 return (_svcauth_rpcsec_gss_getcred(rqst, crp, flavorp));