AMD64 - Fix format conversions and other warnings.
[dragonfly.git] / contrib / openpam / lib / openpam_dynamic.c
blob084408ec1edea8658c24255e4e7556847ba1f5ae
1 /*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2007 Dag-Erling Smørgrav
4 * All rights reserved.
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
13 * are met:
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
21 * permission.
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
33 * SUCH DAMAGE.
35 * $Id: openpam_dynamic.c 408 2007-12-21 11:36:24Z des $
38 #include <dlfcn.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
43 #include <security/pam_appl.h>
45 #include "openpam_impl.h"
47 #ifndef RTLD_NOW
48 #define RTLD_NOW RTLD_LAZY
49 #endif
52 * OpenPAM internal
54 * Locate a dynamically linked module
57 pam_module_t *
58 openpam_dynamic(const char *path)
60 pam_module_t *module;
61 const char *prefix;
62 char *vpath;
63 void *dlh;
64 int i;
66 dlh = NULL;
67 if ((module = calloc(1, sizeof *module)) == NULL)
68 goto buf_err;
70 /* Prepend the standard prefix if not an absolute pathname. */
71 if (path[0] != '/')
72 prefix = OPENPAM_MODULES_DIR;
73 else
74 prefix = "";
76 /* try versioned module first, then unversioned module */
77 if (asprintf(&vpath, "%s%s.%d", prefix, path, LIB_MAJ) < 0)
78 goto buf_err;
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());
84 FREE(vpath);
85 FREE(module);
86 return (NULL);
89 FREE(vpath);
90 if ((module->path = strdup(path)) == NULL)
91 goto buf_err;
92 module->dlh = dlh;
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());
99 return (module);
100 buf_err:
101 openpam_log(PAM_LOG_ERROR, "%m");
102 if (dlh != NULL)
103 dlclose(dlh);
104 FREE(module);
105 return (NULL);
109 * NOPARSE