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      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
     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
     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
     90 blocklist(int action, int rfd, const char *msg)
     91 {
     92 	return blocklist_sa(action, rfd, NULL, 0, msg);
     93 }
     94 
     95 int
     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 *
    102 blocklist_open(void) {
    103 	return bl_create(false, NULL, vsyslog_r);
    104 }
    105 
    106 struct blocklist *
    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
    114 blocklist_close(struct blocklist *bl)
    115 {
    116 	bl_destroy(bl);
    117 }
    118