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_dynamic.c 408 2007-12-21 11:36:24Z des $
43 #include <security/pam_appl.h>
45 #include "openpam_impl.h"
48 #define RTLD_NOW RTLD_LAZY
54 * Locate a dynamically linked module
58 openpam_dynamic(const char *path
)
67 if ((module
= calloc(1, sizeof *module
)) == NULL
)
70 /* Prepend the standard prefix if not an absolute pathname. */
72 prefix
= OPENPAM_MODULES_DIR
;
76 /* try versioned module first, then unversioned module */
77 if (asprintf(&vpath
, "%s%s.%d", prefix
, path
, LIB_MAJ
) < 0)
79 if ((dlh
= dlopen(vpath
, RTLD_NOW
)) == NULL
) {
80 openpam_log(PAM_LOG_DEBUG
, "%s: %s", vpath
, dlerror());
81 *strrchr(vpath
, '.') = '\0';
82 if ((dlh
= dlopen(vpath
, RTLD_NOW
)) == NULL
) {
83 openpam_log(PAM_LOG_DEBUG
, "%s: %s", vpath
, dlerror());
90 if ((module
->path
= strdup(path
)) == NULL
)
93 for (i
= 0; i
< PAM_NUM_PRIMITIVES
; ++i
) {
94 module
->func
[i
] = (pam_func_t
)dlsym(dlh
, _pam_sm_func_name
[i
]);
95 if (module
->func
[i
] == NULL
)
96 openpam_log(PAM_LOG_DEBUG
, "%s: %s(): %s",
97 path
, _pam_sm_func_name
[i
], dlerror());
101 openpam_log(PAM_LOG_ERROR
, "%m");