1 /*
2 * Copyright (c) 2004 Darren Tucker. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25 #include "includes.h"
26
27 #if defined(USE_SHADOW) && defined(HAS_SHADOW_EXPIRE)
28 #include <shadow.h>
29 #include <stdarg.h>
30 #include <string.h>
31 #include <time.h>
32
33 #include "hostfile.h"
34 #include "auth.h"
35 #include "sshbuf.h"
36 #include "ssherr.h"
37 #include "log.h"
38
39 #ifdef DAY
40 # undef DAY
41 #endif
42 #define DAY (24L * 60 * 60) /* 1 day in seconds */
43
44 extern struct sshbuf *loginmsg;
45
46 /*
47 * For the account and password expiration functions, we assume the expiry
48 * occurs the day after the day specified.
49 */
50
51 /*
52 * Check if specified account is expired. Returns 1 if account is expired,
53 * 0 otherwise.
54 */
55 int
auth_shadow_acctexpired(struct spwd * spw)56 auth_shadow_acctexpired(struct spwd *spw)
57 {
58 time_t today;
59 long long daysleft;
60 int r;
61
62 today = time(NULL) / DAY;
63 daysleft = spw->sp_expire - today;
64 debug3("%s: today %lld sp_expire %lld days left %lld", __func__,
65 (long long)today, (long long)spw->sp_expire, daysleft);
66
67 if (spw->sp_expire == -1) {
68 debug3("account expiration disabled");
69 } else if (daysleft < 0) {
70 logit("Account %.100s has expired", spw->sp_namp);
71 return 1;
72 } else if (daysleft <= spw->sp_warn) {
73 debug3("account will expire in %lld days", daysleft);
74 if ((r = sshbuf_putf(loginmsg,
75 "Your account will expire in %lld day%s.\n", daysleft,
76 daysleft == 1 ? "" : "s")) != 0)
77 fatal("%s: buffer error: %s", __func__, ssh_err(r));
78 }
79
80 return 0;
81 }
82
83 /*
84 * Checks password expiry for platforms that use shadow passwd files.
85 * Returns: 1 = password expired, 0 = password not expired
86 */
87 int
auth_shadow_pwexpired(Authctxt * ctxt)88 auth_shadow_pwexpired(Authctxt *ctxt)
89 {
90 struct spwd *spw = NULL;
91 const char *user = ctxt->pw->pw_name;
92 time_t today;
93 int r, daysleft, disabled = 0;
94
95 if ((spw = getspnam((char *)user)) == NULL) {
96 error("Could not get shadow information for %.100s", user);
97 return 0;
98 }
99
100 today = time(NULL) / DAY;
101 debug3_f("today %lld sp_lstchg %lld sp_max %lld", (long long)today,
102 (long long)spw->sp_lstchg, (long long)spw->sp_max);
103
104 #if defined(__hpux) && !defined(HAVE_SECUREWARE)
105 if (iscomsec()) {
106 struct pr_passwd *pr;
107
108 pr = getprpwnam((char *)user);
109
110 /* Test for Trusted Mode expiry disabled */
111 if (pr != NULL && pr->ufld.fd_min == 0 &&
112 pr->ufld.fd_lifetime == 0 && pr->ufld.fd_expire == 0 &&
113 pr->ufld.fd_pw_expire_warning == 0 &&
114 pr->ufld.fd_schange != 0)
115 disabled = 1;
116 }
117 #endif
118
119 /* TODO: check sp_inact */
120 daysleft = spw->sp_lstchg + spw->sp_max - today;
121 if (disabled) {
122 debug3("password expiration disabled");
123 } else if (spw->sp_lstchg == 0) {
124 logit("User %.100s password has expired (root forced)", user);
125 return 1;
126 } else if (spw->sp_max == -1) {
127 debug3("password expiration disabled");
128 } else if (daysleft < 0) {
129 logit("User %.100s password has expired (password aged)", user);
130 return 1;
131 } else if (daysleft <= spw->sp_warn) {
132 debug3("password will expire in %d days", daysleft);
133 if ((r = sshbuf_putf(loginmsg,
134 "Your password will expire in %d day%s.\n", daysleft,
135 daysleft == 1 ? "" : "s")) != 0)
136 fatal("%s: buffer error: %s", __func__, ssh_err(r));
137 }
138
139 return 0;
140 }
141 #endif /* USE_SHADOW && HAS_SHADOW_EXPIRE */
142