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 * $OpenPAM: pam_return.c 938 2017-04-30 21:34:42Z des $
30 */
31
32#ifdef HAVE_CONFIG_H
33# include "config.h"
34#endif
35
36#include <sys/param.h>
37
38#include <limits.h>
39#include <stdlib.h>
40#include <string.h>
41
42#include <security/pam_modules.h>
43#include <security/openpam.h>
44
45#include "openpam_impl.h"
46
47static int
48pam_return(pam_handle_t *pamh, int flags,
49	int argc, const char *argv[])
50{
51	const char *errname;
52	char *e;
53	long errcode;
54
55	(void)flags;
56	(void)argc;
57	(void)argv;
58	if ((errname = openpam_get_option(pamh, "error")) == NULL ||
59	    errname[0] == '\0') {
60		openpam_log(PAM_LOG_ERROR, "missing error parameter");
61		return (PAM_SYSTEM_ERR);
62	}
63	/* is it a number? */
64	errcode = strtol(errname, &e, 10);
65	if (e != NULL && *e == '\0') {
66		/* yep, check range */
67		if (errcode >= INT_MIN && errcode <= INT_MAX)
68			return (errcode);
69	} else {
70		/* nope, look it up */
71		for (errcode = 0; errcode < PAM_NUM_ERRORS; ++errcode)
72			if (strcmp(errname, pam_err_name[errcode]) == 0)
73				return (errcode);
74	}
75	openpam_log(PAM_LOG_ERROR, "invalid error code '%s'", errname);
76	return (PAM_SYSTEM_ERR);
77}
78
79PAM_EXTERN int
80pam_sm_authenticate(pam_handle_t *pamh, int flags,
81	int argc, const char *argv[])
82{
83
84	return (pam_return(pamh, flags, argc, argv));
85}
86
87PAM_EXTERN int
88pam_sm_setcred(pam_handle_t *pamh, int flags,
89	int argc, const char *argv[])
90{
91
92	return (pam_return(pamh, flags, argc, argv));
93}
94
95PAM_EXTERN int
96pam_sm_acct_mgmt(pam_handle_t *pamh, int flags,
97	int argc, const char *argv[])
98{
99
100	return (pam_return(pamh, flags, argc, argv));
101}
102
103PAM_EXTERN int
104pam_sm_open_session(pam_handle_t *pamh, int flags,
105	int argc, const char *argv[])
106{
107
108	return (pam_return(pamh, flags, argc, argv));
109}
110
111PAM_EXTERN int
112pam_sm_close_session(pam_handle_t *pamh, int flags,
113	int argc, const char *argv[])
114{
115
116	return (pam_return(pamh, flags, argc, argv));
117}
118
119PAM_EXTERN int
120pam_sm_chauthtok(pam_handle_t *pamh, int flags,
121	int argc, const char *argv[])
122{
123
124	return (pam_return(pamh, flags, argc, argv));
125}
126
127PAM_MODULE_ENTRY("pam_return");
128