diff options
Diffstat (limited to 'examples/ldns-read-zone.c')
| -rw-r--r-- | examples/ldns-read-zone.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/examples/ldns-read-zone.c b/examples/ldns-read-zone.c new file mode 100644 index 000000000000..ac32bac7f73d --- /dev/null +++ b/examples/ldns-read-zone.c @@ -0,0 +1,212 @@ +/* + * 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> + +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; + const ldns_output_format *fmt = NULL; + ldns_soa_serial_increment_func_t soa_serial_increment_func = NULL; + int soa_serial_increment_func_data = 0; + + while ((c = getopt(argc, argv, "bcdhnsvzS:")) != -1) { + switch(c) { + case 'b': + fmt = ldns_output_format_bubblebabble; + 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': + printf("Usage: %s [-c] [-v] [-z] <zonefile>\n", argv[0]); + printf("\tReads the zonefile and prints it.\n"); + printf("\tThe RR count of the zone is printed to stderr.\n"); + printf("\t-b include bubblebabble of DS's.\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-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 the\n" + "\t\tnumber of seconds since 1-1-1970." + " However, on serial number" + "\n\t\tdecrease, +1 is used in stead" + ". (implies -s)\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); + break; + case 'n': + print_soa = false; + 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 '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); + + 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 (s == LDNS_STATUS_OK) { + 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); + } else { + fprintf(stderr, "%s at %d\n", + ldns_get_errorstr_by_id(s), + line_nr); + exit(EXIT_FAILURE); + } + fclose(fp); + + exit(EXIT_SUCCESS); +} |