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 1.4 2005/11/13 12:27:04 swildner 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(struct svc_req *rqst, struct rpc_msg *msg)
58 struct authunix_parms *aup;
61 struct authunix_parms area_aup;
62 char area_machname[MAX_MACHINE_NAME+1];
69 area = (struct area *) rqst->rq_clntcred;
70 aup = &area->area_aup;
71 aup->aup_machname = area->area_machname;
72 aup->aup_gids = area->area_gids;
73 auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
74 xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
75 buf = XDR_INLINE(&xdrs, auth_len);
77 aup->aup_time = IXDR_GET_LONG(buf);
78 str_len = IXDR_GET_U_LONG(buf);
79 if (str_len > MAX_MACHINE_NAME) {
83 memcpy(aup->aup_machname, (caddr_t)buf, (u_int)str_len);
84 aup->aup_machname[str_len] = 0;
85 str_len = RNDUP(str_len);
86 buf += str_len / sizeof (int32_t);
87 aup->aup_uid = IXDR_GET_LONG(buf);
88 aup->aup_gid = IXDR_GET_LONG(buf);
89 gid_len = IXDR_GET_U_LONG(buf);
90 if (gid_len > NGRPS) {
94 aup->aup_len = gid_len;
95 for (i = 0; i < gid_len; i++) {
96 aup->aup_gids[i] = IXDR_GET_LONG(buf);
99 * five is the smallest unix credentials structure -
100 * timestamp, hostname len (0), uid, gid, and gids len (0).
102 if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
103 printf("bad auth_len gid %d str %d auth %d\n",
104 gid_len, str_len, auth_len);
108 } else if (! xdr_authunix_parms(&xdrs, aup)) {
109 xdrs.x_op = XDR_FREE;
110 xdr_authunix_parms(&xdrs, aup);
115 /* get the verifier */
116 if ((u_int)msg->rm_call.cb_verf.oa_length) {
117 rqst->rq_xprt->xp_verf.oa_flavor =
118 msg->rm_call.cb_verf.oa_flavor;
119 rqst->rq_xprt->xp_verf.oa_base =
120 msg->rm_call.cb_verf.oa_base;
121 rqst->rq_xprt->xp_verf.oa_length =
122 msg->rm_call.cb_verf.oa_length;
124 rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
125 rqst->rq_xprt->xp_verf.oa_length = 0;
135 * Shorthand unix authenticator
136 * Looks up longhand in a cache.
140 _svcauth_short(struct svc_req *rqst, struct rpc_msg *msg)
142 return (AUTH_REJECTEDCRED);