1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 *
22 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 *
25 * Copyright (c) 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T
26 * All Rights Reserved
27 *
28 * Portions of this source code were derived from Berkeley
29 * 4.3 BSD under license from the Regents of the University of
30 * California.
31 */
32
33 #pragma ident "%Z%%M% %I% %E% SMI"
34 /* from kerbd_handle.c 1.3 92/01/29 SMI */
35
36 /*
37 * gssd_handle.c, Interface to gssd
38 *
39 */
40
41 #include <unistd.h>
42 #include <rpc/rpc.h>
43 #include <rpc/clnt.h>
44 #include <stdio.h>
45 #include <string.h>
46 #include <netconfig.h>
47 #include <sys/utsname.h>
48 #include "gssd.h"
49
50 #ifdef DEBUG
51 #define dprt(msg) (void) fprintf(stderr, "%s\n", msg);
52 #else
53 #define dprt(msg)
54 #endif /* DEBUG */
55
56
57 /*
58 * Keep the handle cached. This call may be made quite often.
59 */
60
61 CLIENT *
getgssd_handle()62 getgssd_handle()
63 {
64 void *localhandle;
65 struct netconfig *nconf;
66 struct netconfig *tpconf;
67 static CLIENT *clnt;
68 struct timeval wait_time;
69 struct utsname u;
70 static char *hostname;
71 static bool_t first_time = TRUE;
72
73 #define TOTAL_TIMEOUT 1000 /* total timeout talking to gssd */
74 #define TOTAL_TRIES 1 /* Number of tries */
75
76 if (clnt)
77 return (clnt);
78 if (!(localhandle = setnetconfig()))
79 return (NULL);
80 tpconf = NULL;
81 if (first_time == TRUE) {
82 if (uname(&u) == -1)
83 return ((CLIENT *) NULL);
84 if ((hostname = strdup(u.nodename)) == (char *)NULL)
85 return ((CLIENT *) NULL);
86 first_time = FALSE;
87 }
88 while (nconf = getnetconfig(localhandle)) {
89 if (strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) {
90 if (nconf->nc_semantics == NC_TPI_COTS_ORD) {
91 clnt = clnt_tp_create(hostname,
92 GSSPROG, GSSVERS, nconf);
93 if (clnt) {
94 dprt("got COTS_ORD\n");
95 break;
96 }
97 } else {
98 tpconf = nconf;
99 }
100 }
101 }
102 if ((clnt == NULL) && (tpconf)) {
103
104 /* Now, try the connection-oriented loopback transport */
105
106 clnt = clnt_tp_create(hostname, GSSPROG, GSSVERS, tpconf);
107 #ifdef DEBUG
108 if (clnt) {
109 dprt("got COTS\n");
110 }
111 #endif /* DEBUG */
112 }
113 endnetconfig(localhandle);
114
115 /*
116 * This bit of code uses an as yet unimplemented argument to
117 * clnt_control(). CLSET_SVC_PRIV specifies that the underlying
118 * loopback transport should be checked to ensure it is
119 * connected to a process running as root. If so, the clnt_control()
120 * call returns TRUE. If not, it returns FALSE.
121 */
122
123 #ifdef CLSET_SVC_PRIV
124
125 if (clnt_control(clnt, CLSET_SVC_PRIV, NULL) != TRUE) {
126 clnt_destroy(clnt);
127 clnt = NULL;
128 return (NULL);
129 {
130 #endif
131 if (clnt == NULL)
132 return (NULL);
133
134 clnt->cl_auth = authsys_create("", getuid(), 0, 0, NULL);
135 if (clnt->cl_auth == NULL) {
136 clnt_destroy(clnt);
137 clnt = NULL;
138 return (NULL);
139 }
140 wait_time.tv_sec = TOTAL_TIMEOUT/TOTAL_TRIES;
141 wait_time.tv_usec = 0;
142 (void) clnt_control(clnt, CLSET_RETRY_TIMEOUT, (char *)&wait_time);
143
144 return (clnt);
145 }
146