1/*-
2 * Copyright (c) 2015 Dag-Erling Sm��rgrav
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote
14 *    products derived from this software without specific prior written
15 *    permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#ifdef HAVE_CONFIG_H
31# include "config.h"
32#endif
33
34#include <sys/param.h>
35
36#include <limits.h>
37#include <stdlib.h>
38#include <string.h>
39
40#include <security/pam_modules.h>
41#include <security/openpam.h>
42
43#include "openpam_impl.h"
44
45static int
46pam_return(pam_handle_t *pamh, int flags,
47	int argc, const char *argv[])
48{
49	const char *errname;
50	char *e;
51	long errcode;
52
53	(void)flags;
54	(void)argc;
55	(void)argv;
56	if ((errname = openpam_get_option(pamh, "error")) == NULL ||
57	    errname[0] == '\0') {
58		openpam_log(PAM_LOG_ERROR, "missing error parameter");
59		return (PAM_SYSTEM_ERR);
60	}
61	/* is it a number? */
62	errcode = strtol(errname, &e, 10);
63	if (e != NULL && *e == '\0') {
64		/* yep, check range */
65		if (errcode >= INT_MIN && errcode <= INT_MAX)
66			return (errcode);
67	} else {
68		/* nope, look it up */
69		for (errcode = 0; errcode < PAM_NUM_ERRORS; ++errcode)
70			if (strcmp(errname, pam_err_name[errcode]) == 0)
71				return (errcode);
72	}
73	openpam_log(PAM_LOG_ERROR, "invalid error code '%s'", errname);
74	return (PAM_SYSTEM_ERR);
75}
76
77PAM_EXTERN int
78pam_sm_authenticate(pam_handle_t *pamh, int flags,
79	int argc, const char *argv[])
80{
81
82	return (pam_return(pamh, flags, argc, argv));
83}
84
85PAM_EXTERN int
86pam_sm_setcred(pam_handle_t *pamh, int flags,
87	int argc, const char *argv[])
88{
89
90	return (pam_return(pamh, flags, argc, argv));
91}
92
93PAM_EXTERN int
94pam_sm_acct_mgmt(pam_handle_t *pamh, int flags,
95	int argc, const char *argv[])
96{
97
98	return (pam_return(pamh, flags, argc, argv));
99}
100
101PAM_EXTERN int
102pam_sm_open_session(pam_handle_t *pamh, int flags,
103	int argc, const char *argv[])
104{
105
106	return (pam_return(pamh, flags, argc, argv));
107}
108
109PAM_EXTERN int
110pam_sm_close_session(pam_handle_t *pamh, int flags,
111	int argc, const char *argv[])
112{
113
114	return (pam_return(pamh, flags, argc, argv));
115}
116
117PAM_EXTERN int
118pam_sm_chauthtok(pam_handle_t *pamh, int flags,
119	int argc, const char *argv[])
120{
121
122	return (pam_return(pamh, flags, argc, argv));
123}
124
125PAM_MODULE_ENTRY("pam_return");
126