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 /* from kerbd_handle.c 1.3 92/01/29 SMI */
34
35 /*
36 * gssd_handle.c, Interface to gssd
37 *
38 */
39
40 #include <unistd.h>
41 #include <rpc/rpc.h>
42 #include <rpc/clnt.h>
43 #include <stdio.h>
44 #include <string.h>
45 #include <netconfig.h>
46 #include <sys/utsname.h>
47 #include "gssd.h"
48
49 #ifdef DEBUG
50 #define dprt(msg) (void) fprintf(stderr, "%s\n", msg);
51 #else
52 #define dprt(msg)
53 #endif /* DEBUG */
54
55
56 /*
57 * Keep the handle cached. This call may be made quite often.
58 */
59
60 CLIENT *
getgssd_handle()61 getgssd_handle()
62 {
63 void *localhandle;
64 struct netconfig *nconf;
65 struct netconfig *tpconf;
66 static CLIENT *clnt;
67 struct timeval wait_time;
68 struct utsname u;
69 static char *hostname;
70 static bool_t first_time = TRUE;
71
72 #define TOTAL_TIMEOUT 1000 /* total timeout talking to gssd */
73 #define TOTAL_TRIES 1 /* Number of tries */
74
75 if (clnt)
76 return (clnt);
77 if (!(localhandle = setnetconfig()))
78 return (NULL);
79 tpconf = NULL;
80 if (first_time == TRUE) {
81 if (uname(&u) == -1)
82 return ((CLIENT *) NULL);
83 if ((hostname = strdup(u.nodename)) == (char *)NULL)
84 return ((CLIENT *) NULL);
85 first_time = FALSE;
86 }
87 while (nconf = getnetconfig(localhandle)) {
88 if (strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) {
89 if (nconf->nc_semantics == NC_TPI_COTS_ORD) {
90 clnt = clnt_tp_create(hostname,
91 GSSPROG, GSSVERS, nconf);
92 if (clnt) {
93 dprt("got COTS_ORD\n");
94 break;
95 }
96 } else {
97 tpconf = nconf;
98 }
99 }
100 }
101 if ((clnt == NULL) && (tpconf)) {
102
103 /* Now, try the connection-oriented loopback transport */
104
105 clnt = clnt_tp_create(hostname, GSSPROG, GSSVERS, tpconf);
106 #ifdef DEBUG
107 if (clnt) {
108 dprt("got COTS\n");
109 }
110 #endif /* DEBUG */
111 }
112 endnetconfig(localhandle);
113
114 /*
115 * This bit of code uses an as yet unimplemented argument to
116 * clnt_control(). CLSET_SVC_PRIV specifies that the underlying
117 * loopback transport should be checked to ensure it is
118 * connected to a process running as root. If so, the clnt_control()
119 * call returns TRUE. If not, it returns FALSE.
120 */
121
122 #ifdef CLSET_SVC_PRIV
123
124 if (clnt_control(clnt, CLSET_SVC_PRIV, NULL) != TRUE) {
125 clnt_destroy(clnt);
126 clnt = NULL;
127 return (NULL);
128 {
129 #endif
130 if (clnt == NULL)
131 return (NULL);
132
133 clnt->cl_auth = authsys_create("", getuid(), 0, 0, NULL);
134 if (clnt->cl_auth == NULL) {
135 clnt_destroy(clnt);
136 clnt = NULL;
137 return (NULL);
138 }
139 wait_time.tv_sec = TOTAL_TIMEOUT/TOTAL_TRIES;
140 wait_time.tv_usec = 0;
141 (void) clnt_control(clnt, CLSET_RETRY_TIMEOUT, (char *)&wait_time);
142
143 return (clnt);
144 }
145