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/*
* testcode/readzone.c - readzone tool reads zonefiles
*
* Copyright (c) 2021, NLnet Labs. All rights reserved.
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the NLNET LABS nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/**
* \file
* Command to read and echo a zonefile.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include "sldns/str2wire.h"
#include "sldns/wire2str.h"
int print_usage(FILE *out, const char *progname)
{
fprintf(out, "usage: %s [ -u ] <zonefile> [<origin>]\n", progname);
fprintf(out, "\t-u\tprint in unknown type (RFC3597) format\n");
return out == stdout ? EXIT_SUCCESS : EXIT_FAILURE;
}
int main(int argc, char *const *argv)
{
char *progname = argv[0];
uint8_t rr[LDNS_RR_BUF_SIZE];
char *str = malloc(1024 * 1024);
size_t str_len = sizeof(str);
struct sldns_file_parse_state state;
FILE *in = NULL;
int s = -1;
int opt;
int print_in_unknown_type_format = 0;
while ((opt = getopt(argc, argv, "hu")) != -1) {
switch (opt) {
case 'h':
free(str);
return print_usage(stdout, progname);
case 'u':
print_in_unknown_type_format = 1;
break;
default:
free(str);
return print_usage(stderr, progname);
}
}
argc -= optind;
argv += optind;
memset(&state, 0, sizeof(state));
state.default_ttl = 3600;
state.lineno = 1;
if (argc == 2) {
state.origin_len = sizeof(state.origin);
s = sldns_str2wire_dname_buf(argv[1], state.origin
, &state.origin_len);
if (s) {
fprintf(stderr, "Error parsing origin: %s\n"
, sldns_get_errorstr_parse(s));
free(str);
return EXIT_FAILURE;
}
s = -1;
}
if (!str)
fprintf(stderr, "Memory allocation error: %s\n"
, strerror(errno));
else if (argc != 1 && argc != 2) {
free(str);
return print_usage(stderr, progname);
}
else if (!(in = fopen(argv[0], "r")))
fprintf(stderr, "Error opening \"%s\": %s\n"
, argv[0], strerror(errno));
else while (!feof(in)) {
size_t rr_len = sizeof(rr), dname_len = 0;
size_t written;
s = sldns_fp2wire_rr_buf(in, rr, &rr_len, &dname_len, &state);
if (s) {
fprintf( stderr, "parse error %d:%d: %s\n"
, state.lineno, LDNS_WIREPARSE_OFFSET(s)
, sldns_get_errorstr_parse(s));
break;
}
if (rr_len == 0)
continue;
if (print_in_unknown_type_format)
written = sldns_wire2str_rr_unknown_buf(
rr, rr_len, str, str_len);
else
written = sldns_wire2str_rr_buf(
rr, rr_len, str, str_len);
if (written > str_len) {
while (written > str_len)
str_len *= 2;
free(str);
if (!(str = malloc(str_len))) {
fprintf(stderr, "Memory allocation error: %s\n"
, strerror(errno));
s = -1;
break;
}
if (print_in_unknown_type_format)
(void) sldns_wire2str_rr_unknown_buf(
rr, rr_len, str, str_len);
else
(void) sldns_wire2str_rr_buf(
rr, rr_len, str, str_len);
}
fprintf(stdout, "%s", str);
}
if (in)
fclose(in);
free(str);
return !in || s ? EXIT_FAILURE : EXIT_SUCCESS;
}
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