2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2007 Dag-Erling Smørgrav
6 * This software was developed for the FreeBSD Project by ThinkSec AS and
7 * Network Associates Laboratories, the Security Research Division of
8 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
9 * ("CBOSS"), as part of the DARPA CHATS research program.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote
20 * products derived from this software without specific prior written
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * $Id: openpam_dispatch.c 408 2007-12-21 11:36:24Z des $
38 #include <sys/param.h>
40 #include <security/pam_appl.h>
42 #include "openpam_impl.h"
44 #if !defined(OPENPAM_RELAX_CHECKS)
45 static void _openpam_check_error_code(int, int);
47 #define _openpam_check_error_code(a, b)
48 #endif /* !defined(OPENPAM_RELAX_CHECKS) */
53 * Execute a module chain
57 openpam_dispatch(pam_handle_t *pamh,
69 RETURNC(PAM_SYSTEM_ERR);
71 /* prevent recursion */
72 if (pamh->current != NULL) {
73 openpam_log(PAM_LOG_ERROR,
74 "%s() called while %s::%s() is in progress",
75 _pam_func_name[primitive],
76 pamh->current->module->path,
77 _pam_sm_func_name[pamh->primitive]);
83 case PAM_SM_AUTHENTICATE:
85 chain = pamh->chains[PAM_AUTH];
87 case PAM_SM_ACCT_MGMT:
88 chain = pamh->chains[PAM_ACCOUNT];
90 case PAM_SM_OPEN_SESSION:
91 case PAM_SM_CLOSE_SESSION:
92 chain = pamh->chains[PAM_SESSION];
94 case PAM_SM_CHAUTHTOK:
95 chain = pamh->chains[PAM_PASSWORD];
98 RETURNC(PAM_SYSTEM_ERR);
102 for (err = fail = 0; chain != NULL; chain = chain->next) {
103 if (chain->module->func[primitive] == NULL) {
104 openpam_log(PAM_LOG_ERROR, "%s: no %s()",
105 chain->module->path, _pam_sm_func_name[primitive]);
108 pamh->primitive = primitive;
109 pamh->current = chain;
111 debug = (openpam_get_option(pamh, "debug") != NULL);
114 openpam_log(PAM_LOG_DEBUG, "calling %s() in %s",
115 _pam_sm_func_name[primitive], chain->module->path);
117 r = (chain->module->func[primitive])(pamh, flags,
118 chain->optc, (const char **)chain->optv);
119 pamh->current = NULL;
121 openpam_log(PAM_LOG_DEBUG, "%s: %s(): %s",
122 chain->module->path, _pam_sm_func_name[primitive],
123 pam_strerror(pamh, r));
131 if (r == PAM_SUCCESS) {
133 * For pam_setcred() and pam_chauthtok() with the
134 * PAM_PRELIM_CHECK flag, treat "sufficient" as
137 if ((chain->flag == PAM_SUFFICIENT ||
138 chain->flag == PAM_BINDING) && !fail &&
139 primitive != PAM_SM_SETCRED &&
140 !(primitive == PAM_SM_CHAUTHTOK &&
141 (flags & PAM_PRELIM_CHECK)))
146 _openpam_check_error_code(primitive, r);
149 * Record the return code from the first module to
150 * fail. If a required module fails, record the
151 * return code from the first required module to fail.
155 if ((chain->flag == PAM_REQUIRED ||
156 chain->flag == PAM_BINDING) && !fail) {
157 openpam_log(PAM_LOG_DEBUG, "required module failed");
163 * If a requisite module fails, terminate the chain
166 if (chain->flag == PAM_REQUISITE) {
167 openpam_log(PAM_LOG_DEBUG, "requisite module failed");
173 if (!fail && err != PAM_NEW_AUTHTOK_REQD)
178 #if !defined(OPENPAM_RELAX_CHECKS)
180 _openpam_check_error_code(int primitive, int r)
182 /* common error codes */
183 if (r == PAM_SUCCESS ||
184 r == PAM_SERVICE_ERR ||
187 r == PAM_PERM_DENIED ||
191 /* specific error codes */
193 case PAM_SM_AUTHENTICATE:
194 if (r == PAM_AUTH_ERR ||
195 r == PAM_CRED_INSUFFICIENT ||
196 r == PAM_AUTHINFO_UNAVAIL ||
197 r == PAM_USER_UNKNOWN ||
202 if (r == PAM_CRED_UNAVAIL ||
203 r == PAM_CRED_EXPIRED ||
204 r == PAM_USER_UNKNOWN ||
208 case PAM_SM_ACCT_MGMT:
209 if (r == PAM_USER_UNKNOWN ||
211 r == PAM_NEW_AUTHTOK_REQD ||
212 r == PAM_ACCT_EXPIRED)
215 case PAM_SM_OPEN_SESSION:
216 case PAM_SM_CLOSE_SESSION:
217 if (r == PAM_SESSION_ERR)
220 case PAM_SM_CHAUTHTOK:
221 if (r == PAM_PERM_DENIED ||
222 r == PAM_AUTHTOK_ERR ||
223 r == PAM_AUTHTOK_RECOVERY_ERR ||
224 r == PAM_AUTHTOK_LOCK_BUSY ||
225 r == PAM_AUTHTOK_DISABLE_AGING ||
231 openpam_log(PAM_LOG_ERROR, "%s(): unexpected return value %d",
232 _pam_sm_func_name[primitive], r);
234 #endif /* !defined(OPENPAM_RELAX_CHECKS) */