2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
5 * This software was developed for the FreeBSD Project by ThinkSec AS and
6 * Network Associates Laboratories, the Security Research Division of
7 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
8 * ("CBOSS"), as part of the 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 * $P4: //depot/projects/openpam/modules/pam_unix/pam_unix.c#6 $
41 #include <sys/param.h>
53 #include <security/pam_modules.h>
54 #include <security/pam_appl.h>
57 static char password_prompt[] = "Password:";
65 pam_sm_authenticate(pam_handle_t *pamh, int flags,
66 int argc, const char *argv[])
69 struct pam_conv *conv;
70 struct pam_message msg;
71 const struct pam_message *msgp;
72 struct pam_response *resp;
76 char *crypt_password, *password;
80 if ((pam_err = pam_get_user(pamh, &user, NULL)) != PAM_SUCCESS)
82 if ((pwd = getpwnam(user)) == NULL)
83 return (PAM_USER_UNKNOWN);
87 pam_err = pam_get_item(pamh, PAM_CONV, (const void **)&conv);
88 if (pam_err != PAM_SUCCESS)
89 return (PAM_SYSTEM_ERR);
90 msg.msg_style = PAM_PROMPT_ECHO_OFF;
91 msg.msg = password_prompt;
94 for (retry = 0; retry < 3; ++retry) {
96 pam_err = pam_get_authtok(pamh, PAM_AUTHTOK,
97 (const char **)&password, NULL);
100 pam_err = (*conv->conv)(1, &msgp, &resp, conv->appdata_ptr);
102 if (pam_err == PAM_SUCCESS)
103 password = resp->resp;
109 if (pam_err == PAM_SUCCESS)
112 if (pam_err == PAM_CONV_ERR)
114 if (pam_err != PAM_SUCCESS)
115 return (PAM_AUTH_ERR);
117 /* compare passwords */
118 if ((!pwd->pw_passwd[0] && (flags & PAM_DISALLOW_NULL_AUTHTOK)) ||
119 (crypt_password = crypt(password, pwd->pw_passwd)) == NULL ||
120 strcmp(crypt_password, pwd->pw_passwd) != 0)
121 pam_err = PAM_AUTH_ERR;
123 pam_err = PAM_SUCCESS;
131 pam_sm_setcred(pam_handle_t *pamh, int flags,
132 int argc, const char *argv[])
135 return (PAM_SUCCESS);
139 pam_sm_acct_mgmt(pam_handle_t *pamh, int flags,
140 int argc, const char *argv[])
143 return (PAM_SUCCESS);
147 pam_sm_open_session(pam_handle_t *pamh, int flags,
148 int argc, const char *argv[])
151 return (PAM_SUCCESS);
155 pam_sm_close_session(pam_handle_t *pamh, int flags,
156 int argc, const char *argv[])
159 return (PAM_SUCCESS);
163 pam_sm_chauthtok(pam_handle_t *pamh, int flags,
164 int argc, const char *argv[])
167 return (PAM_SERVICE_ERR);
170 #ifdef PAM_MODULE_ENTRY
171 PAM_MODULE_ENTRY("pam_unix");