2 * Copyright (c) 2009, Sun Microsystems, Inc.
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29 #if defined(LIBC_SCCS) && !defined(lint)
30 static char *sccsid2 = "@(#)svc_auth_unix.c 1.28 88/02/08 Copyr 1984 Sun Micro";
31 static char *sccsid = "@(#)svc_auth_unix.c 2.3 88/08/01 4.0 RPCSRC";
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
38 * Handles UNIX flavor authentication parameters on the service side of rpc.
39 * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
40 * _svcauth_unix does full blown unix style uid,gid+gids auth,
41 * _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
42 * Note: the shorthand has been gutted for efficiency.
44 * Copyright (C) 1984, Sun Microsystems, Inc.
47 #include "namespace.h"
53 #include "un-namespace.h"
56 * Unix longhand authenticator
59 _svcauth_unix(struct svc_req *rqst, struct rpc_msg *msg)
63 struct authunix_parms *aup;
66 struct authunix_parms area_aup;
67 char area_machname[MAX_MACHINE_NAME+1];
68 u_int area_gids[NGRPS];
71 size_t str_len, gid_len;
77 area = (struct area *) rqst->rq_clntcred;
78 aup = &area->area_aup;
79 aup->aup_machname = area->area_machname;
80 aup->aup_gids = area->area_gids;
81 auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
82 xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
83 buf = XDR_INLINE(&xdrs, auth_len);
85 aup->aup_time = IXDR_GET_INT32(buf);
86 str_len = (size_t)IXDR_GET_U_INT32(buf);
87 if (str_len > MAX_MACHINE_NAME) {
91 memmove(aup->aup_machname, buf, str_len);
92 aup->aup_machname[str_len] = 0;
93 str_len = RNDUP(str_len);
94 buf += str_len / sizeof (int32_t);
95 aup->aup_uid = (int)IXDR_GET_INT32(buf);
96 aup->aup_gid = (int)IXDR_GET_INT32(buf);
97 gid_len = (size_t)IXDR_GET_U_INT32(buf);
98 if (gid_len > NGRPS) {
102 aup->aup_len = gid_len;
103 for (i = 0; i < gid_len; i++) {
104 aup->aup_gids[i] = (int)IXDR_GET_INT32(buf);
107 * five is the smallest unix credentials structure -
108 * timestamp, hostname len (0), uid, gid, and gids len (0).
110 if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
111 (void) printf("bad auth_len gid %ld str %ld auth %u\n",
112 (long)gid_len, (long)str_len, auth_len);
116 } else if (! xdr_authunix_parms(&xdrs, aup)) {
117 xdrs.x_op = XDR_FREE;
118 (void)xdr_authunix_parms(&xdrs, aup);
123 /* get the verifier */
124 if ((u_int)msg->rm_call.cb_verf.oa_length) {
125 rqst->rq_xprt->xp_verf.oa_flavor =
126 msg->rm_call.cb_verf.oa_flavor;
127 rqst->rq_xprt->xp_verf.oa_base =
128 msg->rm_call.cb_verf.oa_base;
129 rqst->rq_xprt->xp_verf.oa_length =
130 msg->rm_call.cb_verf.oa_length;
132 rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
133 rqst->rq_xprt->xp_verf.oa_length = 0;
143 * Shorthand unix authenticator
144 * Looks up longhand in a cache.
148 _svcauth_short(struct svc_req *rqst, struct rpc_msg *msg)
150 return (AUTH_REJECTEDCRED);