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      1 /*	$NetBSD: callbacks.c,v 1.6 2025/01/26 16:25:22 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
      5  *
      6  * SPDX-License-Identifier: MPL-2.0
      7  *
      8  * This Source Code Form is subject to the terms of the Mozilla Public
      9  * License, v. 2.0. If a copy of the MPL was not distributed with this
     10  * file, you can obtain one at https://mozilla.org/MPL/2.0/.
     11  *
     12  * See the COPYRIGHT file distributed with this work for additional
     13  * information regarding copyright ownership.
     14  */
     15 
     16 /*! \file */
     17 
     18 #include <isc/util.h>
     19 
     20 #include <dns/callbacks.h>
     21 #include <dns/log.h>
     22 
     23 static void
     24 stdio_error_warn_callback(dns_rdatacallbacks_t *, const char *, ...)
     25 	ISC_FORMAT_PRINTF(2, 3);
     26 
     27 static void
     28 isclog_error_callback(dns_rdatacallbacks_t *callbacks, const char *fmt, ...)
     29 	ISC_FORMAT_PRINTF(2, 3);
     30 
     31 static void
     32 isclog_warn_callback(dns_rdatacallbacks_t *callbacks, const char *fmt, ...)
     33 	ISC_FORMAT_PRINTF(2, 3);
     34 
     35 /*
     36  * Private
     37  */
     38 
     39 static void
     40 stdio_error_warn_callback(dns_rdatacallbacks_t *callbacks, const char *fmt,
     41 			  ...) {
     42 	va_list ap;
     43 
     44 	UNUSED(callbacks);
     45 
     46 	va_start(ap, fmt);
     47 	vfprintf(stderr, fmt, ap);
     48 	va_end(ap);
     49 	fprintf(stderr, "\n");
     50 }
     51 
     52 static void
     53 isclog_error_callback(dns_rdatacallbacks_t *callbacks, const char *fmt, ...) {
     54 	va_list ap;
     55 
     56 	UNUSED(callbacks);
     57 
     58 	va_start(ap, fmt);
     59 	isc_log_vwrite(dns_lctx, DNS_LOGCATEGORY_GENERAL,
     60 		       DNS_LOGMODULE_MASTER, /* XXX */
     61 		       ISC_LOG_ERROR, fmt, ap);
     62 	va_end(ap);
     63 }
     64 
     65 static void
     66 isclog_warn_callback(dns_rdatacallbacks_t *callbacks, const char *fmt, ...) {
     67 	va_list ap;
     68 
     69 	UNUSED(callbacks);
     70 
     71 	va_start(ap, fmt);
     72 
     73 	isc_log_vwrite(dns_lctx, DNS_LOGCATEGORY_GENERAL,
     74 		       DNS_LOGMODULE_MASTER, /* XXX */
     75 		       ISC_LOG_WARNING, fmt, ap);
     76 	va_end(ap);
     77 }
     78 
     79 static void
     80 dns_rdatacallbacks_initcommon(dns_rdatacallbacks_t *callbacks) {
     81 	REQUIRE(callbacks != NULL);
     82 
     83 	*callbacks = (dns_rdatacallbacks_t){
     84 		.magic = DNS_CALLBACK_MAGIC,
     85 	};
     86 }
     87 
     88 /*
     89  * Public.
     90  */
     91 
     92 void
     93 dns_rdatacallbacks_init(dns_rdatacallbacks_t *callbacks) {
     94 	dns_rdatacallbacks_initcommon(callbacks);
     95 	callbacks->error = isclog_error_callback;
     96 	callbacks->warn = isclog_warn_callback;
     97 }
     98 
     99 void
    100 dns_rdatacallbacks_init_stdio(dns_rdatacallbacks_t *callbacks) {
    101 	dns_rdatacallbacks_initcommon(callbacks);
    102 	callbacks->error = stdio_error_warn_callback;
    103 	callbacks->warn = stdio_error_warn_callback;
    104 }
    105