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 <old_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 50 blacklist_sa(int action, int rfd, const struct sockaddr *sa, socklen_t salen, 51 const char *msg) 52 { 53 struct blacklist *bl; 54 int rv; 55 if ((bl = blacklist_open()) == NULL) 56 return -1; 57 rv = blacklist_sa_r(bl, action, rfd, sa, salen, msg); 58 blacklist_close(bl); 59 return rv; 60 } 61 62 int 63 blacklist_sa_r(struct blacklist *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 BLACKLIST_AUTH_FAIL: 71 internal_action = BL_ADD; 72 break; 73 case BLACKLIST_AUTH_OK: 74 internal_action = BL_DELETE; 75 break; 76 case BLACKLIST_ABUSIVE_BEHAVIOR: 77 internal_action = BL_ABUSE; 78 break; 79 case BLACKLIST_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 90 blacklist(int action, int rfd, const char *msg) 91 { 92 return blacklist_sa(action, rfd, NULL, 0, msg); 93 } 94 95 int 96 blacklist_r(struct blacklist *bl, int action, int rfd, const char *msg) 97 { 98 return blacklist_sa_r(bl, action, rfd, NULL, 0, msg); 99 } 100 101 struct blacklist * 102 blacklist_open(void) { 103 return bl_create(false, NULL, vsyslog_r); 104 } 105 106 struct blacklist * 107 blacklist_open2( 108 void (*logger)(int, struct syslog_data *, const char *, va_list)) 109 { 110 return bl_create(false, NULL, logger); 111 } 112 113 void 114 blacklist_close(struct blacklist *bl) 115 { 116 bl_destroy(bl); 117 } 118