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/*
* read a zone file from disk and prints it, one RR per line
*
* (c) NLnetLabs 2005-2008
*
* See the file LICENSE for the license
*/
#include "config.h"
#include <unistd.h>
#include <stdlib.h>
#include <ldns/ldns.h>
#include <ldns/host2str.h>
#include <errno.h>
void print_usage(const char* progname)
{
printf("Usage: %s [OPTIONS] <zonefile>\n", progname);
printf("\tReads the zonefile and prints it.\n");
printf("\tThe RR count of the zone is printed to stderr.\n");
printf("\t-b include Bubble Babble encoding of DS's.\n");
printf("\t-0 zeroize timestamps and signature in RRSIG records.\n");
printf("\t-c canonicalize all rrs in the zone.\n");
printf("\t-d only show DNSSEC data from the zone\n");
printf("\t-h show this text\n");
printf("\t-n do not print the SOA record\n");
printf("\t-p prepend SOA serial with spaces so"
" it takes exactly ten characters.\n");
printf("\t-s strip DNSSEC data from the zone\n");
printf("\t-S [[+|-]<number> | YYYYMMDDxx | "
" unixtime ]\n"
"\t\tSet serial number to <number> or,"
" when preceded by a sign,\n"
"\t\toffset the existing number with "
"<number>. With YYYYMMDDxx\n"
"\t\tthe serial is formatted as a datecounter"
", and with unixtime as\n"
"\t\tthe number of seconds since 1-1-1970."
" However, on serial\n"
"\t\tnumber decrease, +1 is used in stead"
". (implies -s)\n");
printf("\t-u <rr type>\n");
printf("\t\tMark <rr type> for printing in unknown type format.\n");
printf("\t\tThis option may be given multiple times.\n");
printf("\t\t-u is not meant to be used together with -U.\n");
printf("\t-U <rr type>\n");
printf("\t\tMark <rr type> for not printing in unknown type format.\n");
printf("\t\tThis option may be given multiple times.\n");
printf(
"\t\tThe first occurrence of the -U option marks all RR types for"
"\n\t\tprinting in unknown type format except for the given <rr type>."
"\n\t\tSubsequent -U options will clear the mark for those <rr type>s"
"\n\t\ttoo, so that only the given <rr type>s will be printed in the"
"\n\t\tpresentation format specific for those <rr type>s.\n");
printf("\t\t-U is not meant to be used together with -u.\n");
printf("\t-v shows the version and exits\n");
printf("\t-z sort the zone (implies -c).\n");
printf("\nif no file is given standard input is read\n");
exit(EXIT_SUCCESS);
}
int
main(int argc, char **argv)
{
char *filename;
FILE *fp;
ldns_zone *z;
int line_nr = 0;
int c;
bool canonicalize = false;
bool sort = false;
bool strip = false;
bool only_dnssec = false;
bool print_soa = true;
ldns_status s;
size_t i;
ldns_rr_list *stripped_list;
ldns_rr *cur_rr;
ldns_rr_type cur_rr_type;
ldns_output_format_storage fmt_storage;
ldns_output_format* fmt = ldns_output_format_init(&fmt_storage);
ldns_soa_serial_increment_func_t soa_serial_increment_func = NULL;
int soa_serial_increment_func_data = 0;
while ((c = getopt(argc, argv, "0bcdhnpsu:U:vzS:")) != -1) {
switch(c) {
case 'b':
fmt->flags |=
( LDNS_COMMENT_BUBBLEBABBLE |
LDNS_COMMENT_FLAGS );
break;
case '0':
fmt->flags |= LDNS_FMT_ZEROIZE_RRSIGS;
break;
case 'c':
canonicalize = true;
break;
case 'd':
only_dnssec = true;
if (strip) {
fprintf(stderr, "Warning: stripping both DNSSEC and non-DNSSEC records. Output will be sparse.\n");
}
break;
case 'h':
print_usage("ldns-read-zone");
break;
case 'n':
print_soa = false;
break;
case 'p':
fmt->flags |= LDNS_FMT_PAD_SOA_SERIAL;
break;
case 's':
strip = true;
if (only_dnssec) {
fprintf(stderr, "Warning: stripping both DNSSEC and non-DNSSEC records. Output will be sparse.\n");
}
break;
case 'u':
s = ldns_output_format_set_type(fmt,
ldns_get_rr_type_by_name(optarg));
if (s != LDNS_STATUS_OK) {
fprintf( stderr
, "Cannot set rr type %s "
"in output format to "
"print as unknown type: %s\n"
, ldns_rr_descript(
ldns_get_rr_type_by_name(optarg)
)->_name
, ldns_get_errorstr_by_id(s)
);
exit(EXIT_FAILURE);
}
break;
case 'U':
s = ldns_output_format_clear_type(fmt,
ldns_get_rr_type_by_name(optarg));
if (s != LDNS_STATUS_OK) {
fprintf( stderr
, "Cannot set rr type %s "
"in output format to not "
"print as unknown type: %s\n"
, ldns_rr_descript(
ldns_get_rr_type_by_name(optarg)
)->_name
, ldns_get_errorstr_by_id(s)
);
exit(EXIT_FAILURE);
}
break;
case 'v':
printf("read zone version %s (ldns version %s)\n", LDNS_VERSION, ldns_version());
exit(EXIT_SUCCESS);
break;
case 'z':
canonicalize = true;
sort = true;
break;
case 'S':
strip = true;
if (*optarg == '+' || *optarg == '-') {
soa_serial_increment_func_data =
atoi(optarg);
soa_serial_increment_func =
ldns_soa_serial_increment_by;
} else if (! strtok(optarg, "0123456789")) {
soa_serial_increment_func_data =
atoi(optarg);
soa_serial_increment_func =
ldns_soa_serial_identity;
} else if (!strcasecmp(optarg, "YYYYMMDDxx")){
soa_serial_increment_func =
ldns_soa_serial_datecounter;
} else if (!strcasecmp(optarg, "unixtime")){
soa_serial_increment_func =
ldns_soa_serial_unixtime;
} else {
fprintf(stderr, "-S expects a number "
"optionally preceded by a "
"+ or - sign to indicate an "
"offset, or the text YYYYMM"
"DDxx or unixtime\n");
exit(EXIT_FAILURE);
}
break;
}
}
argc -= optind;
argv += optind;
if (argc == 0) {
fp = stdin;
} else {
filename = argv[0];
fp = fopen(filename, "r");
if (!fp) {
fprintf(stderr, "Unable to open %s: %s\n", filename, strerror(errno));
exit(EXIT_FAILURE);
}
}
s = ldns_zone_new_frm_fp_l(&z, fp, NULL, 0, LDNS_RR_CLASS_IN, &line_nr);
fclose(fp);
if (s != LDNS_STATUS_OK) {
fprintf(stderr, "%s at %d\n",
ldns_get_errorstr_by_id(s),
line_nr);
exit(EXIT_FAILURE);
}
if (strip) {
stripped_list = ldns_rr_list_new();
while ((cur_rr = ldns_rr_list_pop_rr(ldns_zone_rrs(z)))) {
cur_rr_type = ldns_rr_get_type(cur_rr);
if (cur_rr_type == LDNS_RR_TYPE_RRSIG ||
cur_rr_type == LDNS_RR_TYPE_NSEC ||
cur_rr_type == LDNS_RR_TYPE_NSEC3 ||
cur_rr_type == LDNS_RR_TYPE_NSEC3PARAM
) {
ldns_rr_free(cur_rr);
} else {
ldns_rr_list_push_rr(stripped_list, cur_rr);
}
}
ldns_rr_list_free(ldns_zone_rrs(z));
ldns_zone_set_rrs(z, stripped_list);
}
if (only_dnssec) {
stripped_list = ldns_rr_list_new();
while ((cur_rr = ldns_rr_list_pop_rr(ldns_zone_rrs(z)))) {
cur_rr_type = ldns_rr_get_type(cur_rr);
if (cur_rr_type == LDNS_RR_TYPE_RRSIG ||
cur_rr_type == LDNS_RR_TYPE_NSEC ||
cur_rr_type == LDNS_RR_TYPE_NSEC3 ||
cur_rr_type == LDNS_RR_TYPE_NSEC3PARAM
) {
ldns_rr_list_push_rr(stripped_list, cur_rr);
} else {
ldns_rr_free(cur_rr);
}
}
ldns_rr_list_free(ldns_zone_rrs(z));
ldns_zone_set_rrs(z, stripped_list);
}
if (canonicalize) {
ldns_rr2canonical(ldns_zone_soa(z));
for (i = 0; i < ldns_rr_list_rr_count(ldns_zone_rrs(z)); i++) {
ldns_rr2canonical(ldns_rr_list_rr(ldns_zone_rrs(z), i));
}
}
if (sort) {
ldns_zone_sort(z);
}
if (print_soa && ldns_zone_soa(z)) {
if (soa_serial_increment_func) {
ldns_rr_soa_increment_func_int(
ldns_zone_soa(z)
, soa_serial_increment_func
, soa_serial_increment_func_data
);
}
ldns_rr_print_fmt(stdout, fmt, ldns_zone_soa(z));
}
ldns_rr_list_print_fmt(stdout, fmt, ldns_zone_rrs(z));
ldns_zone_deep_free(z);
exit(EXIT_SUCCESS);
}
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