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31 * Handles UNIX flavor authentication parameters on the service side of rpc.
32 * There are two svc auth implementations here: AUTH_UNIX and AUTH_SHORT.
33 * _svcauth_unix does full blown unix style uid,gid+gids auth,
34 * _svcauth_short uses a shorthand auth to index into a cache of longhand auths.
35 * Note: the shorthand has been gutted for efficiency.
37 * Copyright (C) 1984, Sun Microsystems, Inc.
47 * Unix longhand authenticator
50 _svcauth_unix(rqst, msg)
56 struct authunix_parms *aup;
59 struct authunix_parms area_aup;
60 char area_machname[MAX_MACHINE_NAME+1];
61 gid_t area_gids[NGRPS];
64 size_t str_len, gid_len;
70 area = (struct area *) rqst->rq_clntcred;
71 aup = &area->area_aup;
72 aup->aup_machname = area->area_machname;
73 aup->aup_gids = area->area_gids;
74 auth_len = (u_int)msg->rm_call.cb_cred.oa_length;
75 xdrmem_create(&xdrs, msg->rm_call.cb_cred.oa_base, auth_len,XDR_DECODE);
76 buf = XDR_INLINE(&xdrs, auth_len);
78 aup->aup_time = IXDR_GET_INT32(buf);
79 str_len = (size_t)IXDR_GET_U_INT32(buf);
80 if (str_len > MAX_MACHINE_NAME) {
84 memmove(aup->aup_machname, buf, str_len);
85 aup->aup_machname[str_len] = 0;
86 str_len = RNDUP(str_len);
87 buf += str_len / sizeof (int32_t);
88 aup->aup_uid = (int)IXDR_GET_INT32(buf);
89 aup->aup_gid = (int)IXDR_GET_INT32(buf);
90 gid_len = (size_t)IXDR_GET_U_INT32(buf);
91 if (gid_len > NGRPS) {
95 aup->aup_len = gid_len;
96 for (i = 0; i < gid_len; i++) {
97 aup->aup_gids[i] = (int)IXDR_GET_INT32(buf);
100 * five is the smallest unix credentials structure -
101 * timestamp, hostname len (0), uid, gid, and gids len (0).
103 if ((5 + gid_len) * BYTES_PER_XDR_UNIT + str_len > auth_len) {
104 (void) printf("bad auth_len gid %ld str %ld auth %u\n",
105 (long)gid_len, (long)str_len, auth_len);
109 } else if (! xdr_authunix_parms(&xdrs, aup)) {
110 xdrs.x_op = XDR_FREE;
111 (void)xdr_authunix_parms(&xdrs, aup);
116 /* get the verifier */
117 if ((u_int)msg->rm_call.cb_verf.oa_length) {
118 rqst->rq_xprt->xp_verf.oa_flavor =
119 msg->rm_call.cb_verf.oa_flavor;
120 rqst->rq_xprt->xp_verf.oa_base =
121 msg->rm_call.cb_verf.oa_base;
122 rqst->rq_xprt->xp_verf.oa_length =
123 msg->rm_call.cb_verf.oa_length;
125 rqst->rq_xprt->xp_verf.oa_flavor = AUTH_NULL;
126 rqst->rq_xprt->xp_verf.oa_length = 0;
136 * Shorthand unix authenticator
137 * Looks up longhand in a cache.
141 _svcauth_short(rqst, msg)
142 struct svc_req *rqst;
145 return (AUTH_REJECTEDCRED);