1 /* $NetBSD: blocklist.c,v 1.4 2025/02/11 17:48:30 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2014 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31 #ifdef HAVE_CONFIG_H
32 #include "config.h"
33 #endif
34
35 #ifdef HAVE_SYS_CDEFS_H
36 #include <sys/cdefs.h>
37 #endif
38 __RCSID("$NetBSD: blocklist.c,v 1.4 2025/02/11 17:48:30 christos Exp $");
39
40 #include <stdio.h>
41 #include <bl.h>
42
43 #include <stdarg.h>
44 #include <errno.h>
45 #include <string.h>
46 #include <stdlib.h>
47 #include <syslog.h>
48
49 int
blocklist_sa(int action,int rfd,const struct sockaddr * sa,socklen_t salen,const char * msg)50 blocklist_sa(int action, int rfd, const struct sockaddr *sa, socklen_t salen,
51 const char *msg)
52 {
53 struct blocklist *bl;
54 int rv;
55 if ((bl = blocklist_open()) == NULL)
56 return -1;
57 rv = blocklist_sa_r(bl, action, rfd, sa, salen, msg);
58 blocklist_close(bl);
59 return rv;
60 }
61
62 int
blocklist_sa_r(struct blocklist * bl,int action,int rfd,const struct sockaddr * sa,socklen_t slen,const char * msg)63 blocklist_sa_r(struct blocklist *bl, int action, int rfd,
64 const struct sockaddr *sa, socklen_t slen, const char *msg)
65 {
66 bl_type_t internal_action;
67
68 /* internal values are not the same as user application values */
69 switch (action) {
70 case BLOCKLIST_AUTH_FAIL:
71 internal_action = BL_ADD;
72 break;
73 case BLOCKLIST_AUTH_OK:
74 internal_action = BL_DELETE;
75 break;
76 case BLOCKLIST_ABUSIVE_BEHAVIOR:
77 internal_action = BL_ABUSE;
78 break;
79 case BLOCKLIST_BAD_USER:
80 internal_action = BL_BADUSER;
81 break;
82 default:
83 internal_action = BL_INVALID;
84 break;
85 }
86 return bl_send(bl, internal_action, rfd, sa, slen, msg);
87 }
88
89 int
blocklist(int action,int rfd,const char * msg)90 blocklist(int action, int rfd, const char *msg)
91 {
92 return blocklist_sa(action, rfd, NULL, 0, msg);
93 }
94
95 int
blocklist_r(struct blocklist * bl,int action,int rfd,const char * msg)96 blocklist_r(struct blocklist *bl, int action, int rfd, const char *msg)
97 {
98 return blocklist_sa_r(bl, action, rfd, NULL, 0, msg);
99 }
100
101 struct blocklist *
blocklist_open(void)102 blocklist_open(void) {
103 return bl_create(false, NULL, vsyslog_r);
104 }
105
106 struct blocklist *
blocklist_open2(void (* logger)(int,struct syslog_data *,const char *,va_list))107 blocklist_open2(
108 void (*logger)(int, struct syslog_data *, const char *, va_list))
109 {
110 return bl_create(false, NULL, logger);
111 }
112
113 void
blocklist_close(struct blocklist * bl)114 blocklist_close(struct blocklist *bl)
115 {
116 bl_destroy(bl);
117 }
118