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/lib/openpam_dispatch.c#21 $
37 #include <sys/param.h>
39 #include <security/pam_appl.h>
41 #include "openpam_impl.h"
43 #if !defined(OPENPAM_RELAX_CHECKS)
44 static void _openpam_check_error_code(int, int);
46 #define _openpam_check_error_code(a, b)
47 #endif /* !defined(OPENPAM_RELAX_CHECKS) */
52 * Execute a module chain
56 openpam_dispatch(pam_handle_t *pamh,
68 RETURNC(PAM_SYSTEM_ERR);
70 /* prevent recursion */
71 if (pamh->current != NULL) {
72 openpam_log(PAM_LOG_ERROR,
73 "%s() called while %s::%s() is in progress",
74 _pam_func_name[primitive],
75 pamh->current->module->path,
76 _pam_sm_func_name[pamh->primitive]);
82 case PAM_SM_AUTHENTICATE:
84 chain = pamh->chains[PAM_AUTH];
86 case PAM_SM_ACCT_MGMT:
87 chain = pamh->chains[PAM_ACCOUNT];
89 case PAM_SM_OPEN_SESSION:
90 case PAM_SM_CLOSE_SESSION:
91 chain = pamh->chains[PAM_SESSION];
93 case PAM_SM_CHAUTHTOK:
94 chain = pamh->chains[PAM_PASSWORD];
97 RETURNC(PAM_SYSTEM_ERR);
101 for (err = fail = 0; chain != NULL; chain = chain->next) {
102 if (chain->module->func[primitive] == NULL) {
103 openpam_log(PAM_LOG_ERROR, "%s: no %s()",
104 chain->module->path, _pam_sm_func_name[primitive]);
107 pamh->primitive = primitive;
108 pamh->current = chain;
110 debug = (openpam_get_option(pamh, "debug") != NULL);
113 openpam_log(PAM_LOG_DEBUG, "calling %s() in %s",
114 _pam_sm_func_name[primitive], chain->module->path);
116 r = (chain->module->func[primitive])(pamh, flags,
117 chain->optc, (const char **)chain->optv);
118 pamh->current = NULL;
120 openpam_log(PAM_LOG_DEBUG, "%s: %s(): %s",
121 chain->module->path, _pam_sm_func_name[primitive],
122 pam_strerror(pamh, r));
130 if (r == PAM_SUCCESS) {
132 * For pam_setcred() and pam_chauthtok() with the
133 * PAM_PRELIM_CHECK flag, treat "sufficient" as
136 if ((chain->flag == PAM_SUFFICIENT ||
137 chain->flag == PAM_BINDING) && !fail &&
138 primitive != PAM_SM_SETCRED &&
139 !(primitive == PAM_SM_CHAUTHTOK &&
140 (flags & PAM_PRELIM_CHECK)))
145 _openpam_check_error_code(primitive, r);
148 * Record the return code from the first module to
149 * fail. If a required module fails, record the
150 * return code from the first required module to fail.
154 if ((chain->flag == PAM_REQUIRED ||
155 chain->flag == PAM_BINDING) && !fail) {
156 openpam_log(PAM_LOG_DEBUG, "required module failed");
162 * If a requisite module fails, terminate the chain
165 if (chain->flag == PAM_REQUISITE) {
166 openpam_log(PAM_LOG_DEBUG, "requisite module failed");
172 if (!fail && err != PAM_NEW_AUTHTOK_REQD)
177 #if !defined(OPENPAM_RELAX_CHECKS)
179 _openpam_check_error_code(int primitive, int r)
181 /* common error codes */
182 if (r == PAM_SUCCESS ||
183 r == PAM_SERVICE_ERR ||
186 r == PAM_PERM_DENIED ||
190 /* specific error codes */
192 case PAM_SM_AUTHENTICATE:
193 if (r == PAM_AUTH_ERR ||
194 r == PAM_CRED_INSUFFICIENT ||
195 r == PAM_AUTHINFO_UNAVAIL ||
196 r == PAM_USER_UNKNOWN ||
201 if (r == PAM_CRED_UNAVAIL ||
202 r == PAM_CRED_EXPIRED ||
203 r == PAM_USER_UNKNOWN ||
207 case PAM_SM_ACCT_MGMT:
208 if (r == PAM_USER_UNKNOWN ||
210 r == PAM_NEW_AUTHTOK_REQD ||
211 r == PAM_ACCT_EXPIRED)
214 case PAM_SM_OPEN_SESSION:
215 case PAM_SM_CLOSE_SESSION:
216 if (r == PAM_SESSION_ERR)
219 case PAM_SM_CHAUTHTOK:
220 if (r == PAM_PERM_DENIED ||
221 r == PAM_AUTHTOK_ERR ||
222 r == PAM_AUTHTOK_RECOVERY_ERR ||
223 r == PAM_AUTHTOK_LOCK_BUSY ||
224 r == PAM_AUTHTOK_DISABLE_AGING ||
230 openpam_log(PAM_LOG_ERROR, "%s(): unexpected return value %d",
231 _pam_sm_func_name[primitive], r);
233 #endif /* !defined(OPENPAM_RELAX_CHECKS) */