dnskey.c

#include <stdio.h>
#include <stdlib.h>
#include <err.h>
#include "dnssec.h"
#include "arg.h"

static void
usage(void)
{
	fprintf(stderr, "usage: dnskey [-k] [-a algorithm] [-t ttl] [-c class] domain keyfile\n");
	exit(2);
}

int
main(int argc, char *argv[])
{
	int algorithm = 0, class = CLASS_IN, flags = DNSKEY_ZONE;
	unsigned long ttl = 0;
	char *end;

	ARGBEGIN {
	case 'a':
		algorithm = algorithm_from_string(EARGF(usage()));
		break;
	case 'k':
		flags |= DNSKEY_SEP;
		break;
	case 't':
		ttl = strtoul(EARGF(usage()), &end, 10);
		if (*end)
			errx(1, "invalid TTL");
		break;
	case 'c':
		class = class_from_string(EARGF(usage()));
		break;
	default:
		usage();
	} ARGEND
	if (argc != 2)
		usage();

	struct key *sk = key_new_from_file(argv[1], algorithm);
	struct dnskey *pk = dnskey_new(flags, sk);
	fputs(argv[0], stdout);
	if (ttl)
		printf("\t%lu", ttl);
	printf("\t%s\tDNSKEY\t%u %d %d ", class_to_string(class), pk->flags, pk->protocol, pk->algorithm);
	for (size_t i = 0; i < pk->data_len; i += 300) {
		char data[401];
		base64_encode(data, pk->data + i, i + 300 < pk->data_len ? 300 : pk->data_len - i);
		fputs(data, stdout);
	}
	putchar('\n');

	fflush(stdout);
	if (ferror(stdout))
		errx(1, "write failed");
}