2 * Copyright (c) 2002 Networks Associates Technologies, Inc.
5 * This software was developed for the FreeBSD Project by ThinkSec AS and
6 * NAI Labs, the Security Research Division of Network Associates, Inc.
7 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
8 * DARPA CHATS research program.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote
19 * products derived from this software without specific prior written
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $FreeBSD: src/usr.bin/passwd/passwd.c,v 1.23 2003/04/18 21:27:09 nectar Exp $
35 * $DragonFly: src/usr.bin/passwd/passwd.c,v 1.3 2003/10/04 20:36:50 hmp Exp $
38 #include <sys/param.h>
47 #include <security/pam_appl.h>
48 #include <security/openpam.h>
50 static pam_handle_t *pamh;
51 static struct pam_conv pamc = {
56 static char *yp_domain;
62 fprintf(stderr, "usage: passwd [-ly] [-d domain] [-h host] [user]\n");
67 main(int argc, char **argv)
69 char hostname[MAXHOSTNAMELEN];
70 struct passwd *pwd = pwd;
74 while ((o = getopt(argc, argv, "d:h:loy")) != -1)
98 if ((pwd = getpwuid(uid)) == NULL)
99 errx(1, "who are you?");
102 if ((pwd = getpwnam(*argv)) == NULL)
103 errx(1, "%s: no such user", *argv);
109 if (uid != 0 && uid != pwd->pw_uid)
110 errx(1, "permission denied");
112 /* check where the user's from */
113 switch (pwd->pw_fields & _PWF_SOURCE) {
115 fprintf(stderr, "Changing local password for %s\n",
119 fprintf(stderr, "Changing NIS password for %s\n",
123 /* XXX: Green men ought to be supported via PAM. */
125 "Sorry, `passwd' can only change passwords for local or NIS users.");
128 #define pam_check(func) do { \
129 if (pam_err != PAM_SUCCESS) { \
130 if (pam_err == PAM_AUTH_ERR || pam_err == PAM_PERM_DENIED || \
131 pam_err == PAM_AUTHTOK_RECOVERY_ERR) \
134 warnx("%s(): %s", func, pam_strerror(pamh, pam_err)); \
140 pam_err = pam_start("passwd", pwd->pw_name, &pamc, &pamh);
141 pam_check("pam_start");
143 pam_err = pam_set_item(pamh, PAM_TTY, ttyname(STDERR_FILENO));
144 pam_check("pam_set_item");
145 gethostname(hostname, sizeof hostname);
146 pam_err = pam_set_item(pamh, PAM_RHOST, hostname);
147 pam_check("pam_set_item");
148 pam_err = pam_set_item(pamh, PAM_RUSER, getlogin());
149 pam_check("pam_set_item");
151 /* set YP domain and host */
152 pam_err = pam_set_data(pamh, "yp_domain", yp_domain, NULL);
153 pam_check("pam_set_data");
154 pam_err = pam_set_data(pamh, "yp_server", yp_host, NULL);
155 pam_check("pam_set_data");
157 /* set new password */
158 pam_err = pam_chauthtok(pamh, 0);
159 pam_check("pam_chauthtok");
162 pam_end(pamh, pam_err);
163 exit(pam_err == PAM_SUCCESS ? 0 : 1);