Update.
[glibc.git] / sunrpc / svc_authux.c
blob08065b418448781bef326c27b1afacb0d83c4d1b
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.
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.
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.
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.
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.
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California 94043
31 * svc_auth_unix.c
32 * Handles UNIX flavor authentication parameters on the service side of rpc.
33 * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
34 * _svcauth_unix does full blown unix style uid,gid+gids auth,
35 * _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
36 * Note: the shorthand has been gutted for efficiency.
38 * Copyright (C) 1984, Sun Microsystems, Inc.
41 #include <stdio.h>
42 #include <string.h>
43 #include <rpc/rpc.h>
44 #include <rpc/svc.h>
47 * Unix longhand authenticator
49 enum auth_stat
50 _svcauth_unix (struct svc_req *rqst, struct rpc_msg *msg)
52 enum auth_stat stat;
53 XDR xdrs;
54 struct authunix_parms *aup;
55 int32_t *buf;
56 struct area
58 struct authunix_parms area_aup;
59 char area_machname[MAX_MACHINE_NAME + 1];
60 gid_t area_gids[NGRPS];
62 *area;
63 u_int auth_len;
64 u_int str_len, gid_len;
65 u_int i;
67 area = (struct area *) rqst->rq_clntcred;
68 aup = &area->area_aup;
69 aup->aup_machname = area->area_machname;
70 aup->aup_gids = area->area_gids;
71 auth_len = (u_int) msg->rm_call.cb_cred.oa_length;
72 xdrmem_create (&xdrs, msg->rm_call.cb_cred.oa_base, auth_len, XDR_DECODE);
73 buf = XDR_INLINE (&xdrs, auth_len);
74 if (buf != NULL)
76 aup->aup_time = IXDR_GET_LONG (buf);
77 str_len = IXDR_GET_U_INT32 (buf);
78 if (str_len > MAX_MACHINE_NAME)
80 stat = AUTH_BADCRED;
81 goto done;
83 bcopy ((caddr_t) buf, aup->aup_machname, (u_int) str_len);
84 aup->aup_machname[str_len] = 0;
85 str_len = RNDUP (str_len);
86 buf = (int32_t *) ((char *) buf + str_len);
87 aup->aup_uid = IXDR_GET_LONG (buf);
88 aup->aup_gid = IXDR_GET_LONG (buf);
89 gid_len = IXDR_GET_U_INT32 (buf);
90 if (gid_len > NGRPS)
92 stat = AUTH_BADCRED;
93 goto done;
95 aup->aup_len = gid_len;
96 for (i = 0; i < gid_len; i++)
98 aup->aup_gids[i] = IXDR_GET_LONG (buf);
101 * five is the smallest unix credentials structure -
102 * timestamp, hostname len (0), uid, gid, and gids len (0).
104 if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len)
106 (void) printf ("bad auth_len gid %d str %d auth %d\n",
107 gid_len, str_len, auth_len);
108 stat = AUTH_BADCRED;
109 goto done;
112 else if (!xdr_authunix_parms (&xdrs, aup))
114 xdrs.x_op = XDR_FREE;
115 (void) xdr_authunix_parms (&xdrs, aup);
116 stat = AUTH_BADCRED;
117 goto done;
120 /* get the verifier */
121 if ((u_int)msg->rm_call.cb_verf.oa_length)
123 rqst->rq_xprt->xp_verf.oa_flavor =
124 msg->rm_call.cb_verf.oa_flavor;
125 rqst->rq_xprt->xp_verf.oa_base =
126 msg->rm_call.cb_verf.oa_base;
127 rqst->rq_xprt->xp_verf.oa_length =
128 msg->rm_call.cb_verf.oa_length;
130 else
132 rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
133 rqst->rq_xprt->xp_verf.oa_length = 0;
135 stat = AUTH_OK;
136 done:
137 XDR_DESTROY (&xdrs);
138 return stat;
143 * Shorthand unix authenticator
144 * Looks up longhand in a cache.
146 /*ARGSUSED */
147 enum auth_stat
148 _svcauth_short (struct svc_req *rqst, struct rpc_msg *msg)
150 return AUTH_REJECTEDCRED;