2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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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.
27 * Mountain View, California 94043
29 * @(#)svc_auth_unix.c 1.28 88/02/08 Copyr 1984 Sun Micro
30 * @(#)svc_auth_unix.c 2.3 88/08/01 4.0 RPCSRC
31 * $FreeBSD: src/lib/libc/rpc/svc_auth_unix.c,v 1.8 1999/08/28 00:00:49 peter Exp $
32 * $DragonFly: src/lib/libc/rpc/svc_auth_unix.c,v 1.2 2003/06/17 04:26:45 dillon Exp $
37 * Handles UNIX flavor authentication parameters on the service side of rpc.
38 * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
39 * _svcauth_unix does full blown unix style uid,gid+gids auth,
40 * _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
41 * Note: the shorthand has been gutted for efficiency.
43 * Copyright (C) 1984, Sun Microsystems, Inc.
51 * Unix longhand authenticator
54 _svcauth_unix(rqst, msg)
55 register struct svc_req *rqst;
56 register struct rpc_msg *msg;
58 register enum auth_stat stat;
60 register struct authunix_parms *aup;
61 register int32_t *buf;
63 struct authunix_parms area_aup;
64 char area_machname[MAX_MACHINE_NAME+1];
71 area = (struct area *) rqst->rq_clntcred;
72 aup = &area->area_aup;
73 aup->aup_machname = area->area_machname;
74 aup->aup_gids = area->area_gids;
75 auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
76 xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
77 buf = XDR_INLINE(&xdrs, auth_len);
79 aup->aup_time = IXDR_GET_LONG(buf);
80 str_len = IXDR_GET_U_LONG(buf);
81 if (str_len > MAX_MACHINE_NAME) {
85 memcpy(aup->aup_machname, (caddr_t)buf, (u_int)str_len);
86 aup->aup_machname[str_len] = 0;
87 str_len = RNDUP(str_len);
88 buf += str_len / sizeof (int32_t);
89 aup->aup_uid = IXDR_GET_LONG(buf);
90 aup->aup_gid = IXDR_GET_LONG(buf);
91 gid_len = IXDR_GET_U_LONG(buf);
92 if (gid_len > NGRPS) {
96 aup->aup_len = gid_len;
97 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) {
105 (void) printf("bad auth_len gid %d str %d auth %d\n",
106 gid_len, str_len, auth_len);
110 } else if (! xdr_authunix_parms(&xdrs, aup)) {
111 xdrs.x_op = XDR_FREE;
112 (void)xdr_authunix_parms(&xdrs, aup);
117 /* get the verifier */
118 if ((u_int)msg->rm_call.cb_verf.oa_length) {
119 rqst->rq_xprt->xp_verf.oa_flavor =
120 msg->rm_call.cb_verf.oa_flavor;
121 rqst->rq_xprt->xp_verf.oa_base =
122 msg->rm_call.cb_verf.oa_base;
123 rqst->rq_xprt->xp_verf.oa_length =
124 msg->rm_call.cb_verf.oa_length;
126 rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
127 rqst->rq_xprt->xp_verf.oa_length = 0;
137 * Shorthand unix authenticator
138 * Looks up longhand in a cache.
142 _svcauth_short(rqst, msg)
143 struct svc_req *rqst;
146 return (AUTH_REJECTEDCRED);