source: branches/samba-3.0/source/pam_smbpass/pam_smb_acct.c@ 693

Last change on this file since 693 was 134, checked in by Paul Smedley, 18 years ago

Update source to 3.0.29
File size: 3.7 KB
Line 
1/* Unix NT password database implementation, version 0.7.5.
2 *
3 * This program is free software; you can redistribute it and/or modify it under
4 * the terms of the GNU General Public License as published by the Free
5 * Software Foundation; either version 2 of the License, or (at your option)
6 * any later version.
7 *
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 675
15 * Mass Ave, Cambridge, MA 02139, USA.
16*/
17
18/* indicate the following groups are defined */
19#define PAM_SM_ACCT
20
21#include "includes.h"
22
23#ifndef LINUX
24
25/* This is only used in the Sun implementation. */
26#include <security/pam_appl.h>
27
28#endif /* LINUX */
29
30#include <security/pam_modules.h>
31
32#include "general.h"
33
34#include "support.h"
35
36
37/*
38 * pam_sm_acct_mgmt() verifies whether or not the account is disabled.
39 *
40 */
41
42int pam_sm_acct_mgmt( pam_handle_t *pamh, int flags,
43 int argc, const char **argv )
44{
45 unsigned int ctrl;
46 int retval;
47
48 const char *name;
49 struct samu *sampass = NULL;
50 void (*oldsig_handler)(int);
51 extern BOOL in_client;
52
53 /* Samba initialization. */
54 load_case_tables();
55 setup_logging( "pam_smbpass", False );
56 in_client = True;
57
58 ctrl = set_ctrl( flags, argc, argv );
59
60 /* get the username */
61
62 retval = pam_get_user( pamh, &name, "Username: " );
63 if (retval != PAM_SUCCESS) {
64 if (on( SMB_DEBUG, ctrl )) {
65 _log_err( LOG_DEBUG, "acct: could not identify user" );
66 }
67 return retval;
68 }
69 if (on( SMB_DEBUG, ctrl )) {
70 _log_err( LOG_DEBUG, "acct: username [%s] obtained", name );
71 }
72
73 if (geteuid() != 0) {
74 _log_err( LOG_DEBUG, "Cannot access samba password database, not running as root.");
75 return PAM_AUTHINFO_UNAVAIL;
76 }
77
78 /* Getting into places that might use LDAP -- protect the app
79 from a SIGPIPE it's not expecting */
80 oldsig_handler = CatchSignal(SIGPIPE, SIGNAL_CAST SIG_IGN);
81 if (!initialize_password_db(True)) {
82 _log_err( LOG_ALERT, "Cannot access samba password database" );
83 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
84 return PAM_AUTHINFO_UNAVAIL;
85 }
86
87 /* Get the user's record. */
88
89 if (!(sampass = samu_new( NULL ))) {
90 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
91 /* malloc fail. */
92 return nt_status_to_pam(NT_STATUS_NO_MEMORY);
93 }
94
95 if (!pdb_getsampwnam(sampass, name )) {
96 _log_err( LOG_DEBUG, "acct: could not identify user" );
97 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
98 return PAM_USER_UNKNOWN;
99 }
100
101 /* check for lookup failure */
102 if (!strlen(pdb_get_username(sampass)) ) {
103 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
104 return PAM_USER_UNKNOWN;
105 }
106
107 if (pdb_get_acct_ctrl(sampass) & ACB_DISABLED) {
108 if (on( SMB_DEBUG, ctrl )) {
109 _log_err( LOG_DEBUG
110 , "acct: account %s is administratively disabled", name );
111 }
112 make_remark( pamh, ctrl, PAM_ERROR_MSG
113 , "Your account has been disabled; "
114 "please see your system administrator." );
115
116 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
117 return PAM_ACCT_EXPIRED;
118 }
119
120 /* TODO: support for expired passwords. */
121
122 CatchSignal(SIGPIPE, SIGNAL_CAST oldsig_handler);
123 return PAM_SUCCESS;
124}
125
126/* static module data */
127#ifdef PAM_STATIC
128struct pam_module _pam_smbpass_acct_modstruct = {
129 "pam_smbpass",
130 NULL,
131 NULL,
132 pam_sm_acct_mgmt,
133 NULL,
134 NULL,
135 NULL
136};
137#endif
138
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