/* * ldns-signzone signs a zone file * * (c) NLnet Labs, 2005 - 2008 * See the file LICENSE for the license */ #include "config.h" #include #include #include #include #include #include #ifdef HAVE_SSL #include #include #endif /* HAVE_SSL */ #define MAX_FILENAME_LEN 250 int verbosity = 1; static void usage(FILE *fp, const char *prog) { fprintf(fp, "%s [OPTIONS] \n", prog); fprintf(fp, " prints the NSEC3 hash of the given domain name\n"); fprintf(fp, "-a [algorithm] hashing algorithm\n"); fprintf(fp, "-t [number] number of hash iterations\n"); fprintf(fp, "-s [string] salt\n"); } int main(int argc, char *argv[]) { ldns_rdf *dname, *hashed_dname; uint8_t nsec3_algorithm = 1; size_t nsec3_iterations_cmd = 1; uint16_t nsec3_iterations = 1; uint8_t nsec3_salt_length = 0; uint8_t *nsec3_salt = NULL; char *prog = strdup(argv[0]); int c; while ((c = getopt(argc, argv, "a:s:t:")) != -1) { switch (c) { case 'a': nsec3_algorithm = (uint8_t) atoi(optarg); break; case 's': if (strlen(optarg) % 2 != 0) { fprintf(stderr, "Salt value is not valid hex data, not a multiple of 2 characters\n"); exit(EXIT_FAILURE); } if (strlen(optarg) > 512) { fprintf(stderr, "Salt too long\n"); exit(EXIT_FAILURE); } nsec3_salt_length = (uint8_t) (strlen(optarg) / 2); nsec3_salt = LDNS_XMALLOC(uint8_t, nsec3_salt_length); for (c = 0; c < (int) strlen(optarg); c += 2) { if (isxdigit((int) optarg[c]) && isxdigit((int) optarg[c+1])) { nsec3_salt[c/2] = (uint8_t) ldns_hexdigit_to_int(optarg[c]) * 16 + ldns_hexdigit_to_int(optarg[c+1]); } else { fprintf(stderr, "Salt value is not valid hex data.\n"); exit(EXIT_FAILURE); } } break; case 't': nsec3_iterations_cmd = (size_t) atol(optarg); if (nsec3_iterations_cmd > LDNS_NSEC3_MAX_ITERATIONS) { fprintf(stderr, "Iterations count can not exceed %u, quitting\n", LDNS_NSEC3_MAX_ITERATIONS); exit(EXIT_FAILURE); } nsec3_iterations = (uint16_t) nsec3_iterations_cmd; break; default: usage(stderr, prog); exit(EXIT_SUCCESS); } } argc -= optind; argv += optind; if (argc < 1) { printf("Error: not enough arguments\n"); usage(stdout, prog); exit(EXIT_FAILURE); } else { dname = ldns_dname_new_frm_str(argv[0]); if (!dname) { fprintf(stderr, "Error: unable to parse domain name\n"); return EXIT_FAILURE; } hashed_dname = ldns_nsec3_hash_name(dname, nsec3_algorithm, nsec3_iterations, nsec3_salt_length, nsec3_salt); if (!hashed_dname) { fprintf(stderr, "Error creating NSEC3 hash\n"); return EXIT_FAILURE; } ldns_rdf_print(stdout, hashed_dname); printf("\n"); ldns_rdf_deep_free(dname); ldns_rdf_deep_free(hashed_dname); } if (nsec3_salt) { free(nsec3_salt); } free(prog); return EXIT_SUCCESS; }