1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate *
4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate * with the License.
8*7c478bd9Sstevel@tonic-gate *
9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate *
14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate *
20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate */
26*7c478bd9Sstevel@tonic-gate
27*7c478bd9Sstevel@tonic-gate #include <sys/param.h>
28*7c478bd9Sstevel@tonic-gate #include <security/pam_appl.h>
29*7c478bd9Sstevel@tonic-gate #include <security/pam_modules.h>
30*7c478bd9Sstevel@tonic-gate #include <pwd.h>
31*7c478bd9Sstevel@tonic-gate #include <shadow.h>
32*7c478bd9Sstevel@tonic-gate #include <string.h>
33*7c478bd9Sstevel@tonic-gate #include <rpc/types.h>
34*7c478bd9Sstevel@tonic-gate #include <rpc/auth.h>
35*7c478bd9Sstevel@tonic-gate #include <locale.h>
36*7c478bd9Sstevel@tonic-gate #include <crypt.h>
37*7c478bd9Sstevel@tonic-gate #include <syslog.h>
38*7c478bd9Sstevel@tonic-gate
39*7c478bd9Sstevel@tonic-gate extern int ruserok(const char *, int, const char *, const char *);
40*7c478bd9Sstevel@tonic-gate
41*7c478bd9Sstevel@tonic-gate /*
42*7c478bd9Sstevel@tonic-gate * pam_sm_authenticate - Checks if the user is allowed remote access
43*7c478bd9Sstevel@tonic-gate */
44*7c478bd9Sstevel@tonic-gate /*ARGSUSED*/
45*7c478bd9Sstevel@tonic-gate int
pam_sm_authenticate(pam_handle_t * pamh,int flags,int argc,const char ** argv)46*7c478bd9Sstevel@tonic-gate pam_sm_authenticate(
47*7c478bd9Sstevel@tonic-gate pam_handle_t *pamh,
48*7c478bd9Sstevel@tonic-gate int flags,
49*7c478bd9Sstevel@tonic-gate int argc,
50*7c478bd9Sstevel@tonic-gate const char **argv)
51*7c478bd9Sstevel@tonic-gate {
52*7c478bd9Sstevel@tonic-gate char *host = NULL, *lusername = NULL;
53*7c478bd9Sstevel@tonic-gate struct passwd pwd;
54*7c478bd9Sstevel@tonic-gate char pwd_buffer[1024];
55*7c478bd9Sstevel@tonic-gate int is_superuser;
56*7c478bd9Sstevel@tonic-gate char *rusername;
57*7c478bd9Sstevel@tonic-gate int i;
58*7c478bd9Sstevel@tonic-gate int debug = 0;
59*7c478bd9Sstevel@tonic-gate
60*7c478bd9Sstevel@tonic-gate for (i = 0; i < argc; i++) {
61*7c478bd9Sstevel@tonic-gate if (strcasecmp(argv[i], "debug") == 0)
62*7c478bd9Sstevel@tonic-gate debug = 1;
63*7c478bd9Sstevel@tonic-gate else
64*7c478bd9Sstevel@tonic-gate syslog(LOG_DEBUG, "illegal option %s", argv[i]);
65*7c478bd9Sstevel@tonic-gate }
66*7c478bd9Sstevel@tonic-gate
67*7c478bd9Sstevel@tonic-gate if (pam_get_item(pamh, PAM_USER, (void **) &lusername) != PAM_SUCCESS)
68*7c478bd9Sstevel@tonic-gate return (PAM_SERVICE_ERR);
69*7c478bd9Sstevel@tonic-gate if (pam_get_item(pamh, PAM_RHOST, (void **) &host) != PAM_SUCCESS)
70*7c478bd9Sstevel@tonic-gate return (PAM_SERVICE_ERR);
71*7c478bd9Sstevel@tonic-gate if (pam_get_item(pamh, PAM_RUSER, (void **)&rusername) != PAM_SUCCESS)
72*7c478bd9Sstevel@tonic-gate return (PAM_SERVICE_ERR);
73*7c478bd9Sstevel@tonic-gate
74*7c478bd9Sstevel@tonic-gate if (lusername == NULL || *lusername == '\0')
75*7c478bd9Sstevel@tonic-gate return (PAM_USER_UNKNOWN);
76*7c478bd9Sstevel@tonic-gate if (rusername == NULL || *rusername == '\0')
77*7c478bd9Sstevel@tonic-gate return (PAM_AUTH_ERR);
78*7c478bd9Sstevel@tonic-gate if (host == NULL || *host == '\0')
79*7c478bd9Sstevel@tonic-gate return (PAM_AUTH_ERR);
80*7c478bd9Sstevel@tonic-gate
81*7c478bd9Sstevel@tonic-gate if (debug) {
82*7c478bd9Sstevel@tonic-gate syslog(LOG_DEBUG,
83*7c478bd9Sstevel@tonic-gate "rhosts authenticate: user = %s, host = %s",
84*7c478bd9Sstevel@tonic-gate lusername, host);
85*7c478bd9Sstevel@tonic-gate }
86*7c478bd9Sstevel@tonic-gate
87*7c478bd9Sstevel@tonic-gate if (getpwnam_r(lusername, &pwd, pwd_buffer, sizeof (pwd_buffer))
88*7c478bd9Sstevel@tonic-gate == NULL)
89*7c478bd9Sstevel@tonic-gate return (PAM_USER_UNKNOWN);
90*7c478bd9Sstevel@tonic-gate
91*7c478bd9Sstevel@tonic-gate if (pwd.pw_uid == 0)
92*7c478bd9Sstevel@tonic-gate is_superuser = 1;
93*7c478bd9Sstevel@tonic-gate else
94*7c478bd9Sstevel@tonic-gate is_superuser = 0;
95*7c478bd9Sstevel@tonic-gate
96*7c478bd9Sstevel@tonic-gate return (ruserok(host, is_superuser, rusername, lusername)
97*7c478bd9Sstevel@tonic-gate == -1 ? PAM_AUTH_ERR : PAM_SUCCESS);
98*7c478bd9Sstevel@tonic-gate
99*7c478bd9Sstevel@tonic-gate }
100*7c478bd9Sstevel@tonic-gate
101*7c478bd9Sstevel@tonic-gate /*
102*7c478bd9Sstevel@tonic-gate * dummy pam_sm_setcred - does nothing
103*7c478bd9Sstevel@tonic-gate */
104*7c478bd9Sstevel@tonic-gate /*ARGSUSED*/
105*7c478bd9Sstevel@tonic-gate int
pam_sm_setcred(pam_handle_t * pamh,int flags,int argc,const char ** argv)106*7c478bd9Sstevel@tonic-gate pam_sm_setcred(
107*7c478bd9Sstevel@tonic-gate pam_handle_t *pamh,
108*7c478bd9Sstevel@tonic-gate int flags,
109*7c478bd9Sstevel@tonic-gate int argc,
110*7c478bd9Sstevel@tonic-gate const char **argv)
111*7c478bd9Sstevel@tonic-gate {
112*7c478bd9Sstevel@tonic-gate return (PAM_IGNORE);
113*7c478bd9Sstevel@tonic-gate }
114