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_dynamic.c#14 $
42 #include <security/pam_appl.h>
44 #include "openpam_impl.h"
47 #define RTLD_NOW RTLD_LAZY
53 * Locate a dynamically linked module
57 openpam_dynamic(const char *path)
66 if ((module = calloc(1, sizeof *module)) == NULL)
69 /* Prepend the standard prefix if not an absolute pathname. */
71 prefix = OPENPAM_MODULES_DIR;
75 /* try versioned module first, then unversioned module */
76 if (asprintf(&vpath, "%s%s.%d", prefix, path, LIB_MAJ) < 0)
78 if ((dlh = dlopen(vpath, RTLD_NOW)) == NULL) {
79 openpam_log(PAM_LOG_DEBUG, "%s: %s", vpath, dlerror());
80 *strrchr(vpath, '.') = '\0';
81 if ((dlh = dlopen(vpath, RTLD_NOW)) == NULL) {
82 openpam_log(PAM_LOG_DEBUG, "%s: %s", vpath, dlerror());
88 if ((module->path = strdup(path)) == NULL)
91 for (i = 0; i < PAM_NUM_PRIMITIVES; ++i) {
92 module->func[i] = (pam_func_t)dlsym(dlh, _pam_sm_func_name[i]);
93 if (module->func[i] == NULL)
94 openpam_log(PAM_LOG_DEBUG, "%s: %s(): %s",
95 path, _pam_sm_func_name[i], dlerror());
99 openpam_log(PAM_LOG_ERROR, "%m");