1 /*-
2 * Copyright (c) 2015 Dag-Erling Smørgrav
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
47 static int
pam_return(pam_handle_t * pamh,int flags,int argc,const char * argv[])48 pam_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
79 PAM_EXTERN int
pam_sm_authenticate(pam_handle_t * pamh,int flags,int argc,const char * argv[])80 pam_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
87 PAM_EXTERN int
pam_sm_setcred(pam_handle_t * pamh,int flags,int argc,const char * argv[])88 pam_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
95 PAM_EXTERN int
pam_sm_acct_mgmt(pam_handle_t * pamh,int flags,int argc,const char * argv[])96 pam_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
103 PAM_EXTERN int
pam_sm_open_session(pam_handle_t * pamh,int flags,int argc,const char * argv[])104 pam_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
111 PAM_EXTERN int
pam_sm_close_session(pam_handle_t * pamh,int flags,int argc,const char * argv[])112 pam_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
119 PAM_EXTERN int
pam_sm_chauthtok(pam_handle_t * pamh,int flags,int argc,const char * argv[])120 pam_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
127 PAM_MODULE_ENTRY("pam_return");
128