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