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/* Copyright (C) 2020 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <getopt.h>
#include <stdlib.h>
#include "knot/conf/conf.h"
#include "knot/updates/zone-update.h"
#include "knot/zone/zone-load.h"
#include "knot/zone/zonefile.h"
#include "utils/common/params.h"
#define PROGRAM_NAME "kzonesign"
static const char *global_outdir = NULL;
// copy-pasted from keymgr
static bool init_conf(const char *confdb)
{
size_t max_conf_size = (size_t)CONF_MAPSIZE * 1024 * 1024;
conf_flag_t flags = CONF_FNOHOSTNAME | CONF_FOPTMODULES;
if (confdb != NULL) {
flags |= CONF_FREADONLY;
}
conf_t *new_conf = NULL;
int ret = conf_new(&new_conf, conf_schema, confdb, max_conf_size, flags);
if (ret != KNOT_EOK) {
printf("Failed opening configuration database %s (%s)\n",
(confdb == NULL ? "" : confdb), knot_strerror(ret));
return false;
}
conf_update(new_conf, CONF_UPD_FNONE);
return true;
}
static void print_help(void)
{
printf("Usage: %s [parameters] -c <conf_file> <zone_name>\n"
"\n"
"Parameters:\n"
" -o, --outdir <dir_name> Output directory.\n"
" -r, --rollover Allow key rollovers and NSEC3 re-salt.\n"
" -t, --time <timestamp> Current time specification.\n"
" (default current UNIX time)\n"
" -h, --help Print the program help.\n"
" -V, --version Print the program version.\n"
"\n",
PROGRAM_NAME);
}
int main(int argc, char *argv[])
{
const char *confile = NULL, *zone_str = NULL;
knot_dname_t *zone_name = NULL;
zone_contents_t *unsigned_conts = NULL;
zone_t *zone_struct = NULL;
zone_update_t up = { 0 };
knot_lmdb_db_t kasp_db = { 0 };
zone_sign_roll_flags_t rollover = 0;
int64_t timestamp = 0;
zone_sign_reschedule_t next_sign = { 0 };
struct option opts[] = {
{ "config", required_argument, NULL, 'c' },
{ "outdir", required_argument, NULL, 'o' },
{ "rollover", no_argument, NULL, 'r' },
{ "time", required_argument, NULL, 't' },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{ NULL }
};
tzset();
int opt;
while ((opt = getopt_long(argc, argv, "c:o:rt:hV", opts, NULL)) != -1) {
switch (opt) {
case 'c':
confile = optarg;
break;
case 'o':
global_outdir = optarg;
break;
case 'r':
rollover = KEY_ROLL_ALLOW_ALL;
break;
case 't':
timestamp = atol(optarg);
if (timestamp <= 0) {
print_help();
return EXIT_FAILURE;
}
break;
case 'h':
print_help();
return EXIT_SUCCESS;
case 'V':
print_version(PROGRAM_NAME);
return EXIT_SUCCESS;
default:
print_help();
return EXIT_FAILURE;
}
}
if (confile == NULL || argc - optind != 1) {
print_help();
return EXIT_FAILURE;
}
zone_str = argv[optind];
zone_name = knot_dname_from_str_alloc(zone_str);
if (zone_name == NULL) {
printf("Invalid zone name '%s'\n", zone_str);
return EXIT_FAILURE;
}
if (!init_conf(NULL)) {
free(zone_name);
return EXIT_FAILURE;
}
int ret = conf_import(conf(), confile, true, false);
if (ret != KNOT_EOK) {
printf("Failed opening configuration file '%s' (%s)\n",
confile, knot_strerror(ret));
goto fail;
}
conf_val_t val = conf_zone_get(conf(), C_DOMAIN, zone_name);
if (val.code != KNOT_EOK) {
printf("Zone '%s' not configured\n", zone_str);
ret = val.code;
goto fail;
}
val = conf_zone_get(conf(), C_DNSSEC_POLICY, zone_name);
if (val.code != KNOT_EOK) {
printf("Waring: DNSSEC policy not configured for zone '%s', taking defaults\n", zone_str);
}
zone_struct = zone_new(zone_name);
if (zone_struct == NULL) {
printf("out of memory\n");
ret = KNOT_ENOMEM;
goto fail;
}
ret = zone_load_contents(conf(), zone_name, &unsigned_conts, false);
if (ret != KNOT_EOK) {
printf("Failed to load zone contents (%s)\n", knot_strerror(ret));
goto fail;
}
ret = zone_update_from_contents(&up, zone_struct, unsigned_conts, UPDATE_FULL);
if (ret != KNOT_EOK) {
printf("Failed to initialize zone update (%s)\n", knot_strerror(ret));
zone_contents_deep_free(unsigned_conts);
goto fail;
}
kasp_db_ensure_init(&kasp_db, conf());
zone_struct->kaspdb = &kasp_db;
ret = knot_dnssec_zone_sign(&up, 0, rollover, timestamp, &next_sign);
if (ret == KNOT_DNSSEC_ENOKEY) { // exception: allow generating initial keys
rollover = KEY_ROLL_ALLOW_ALL;
ret = knot_dnssec_zone_sign(&up, 0, rollover, timestamp, &next_sign);
}
if (ret != KNOT_EOK) {
printf("Failed to sign the zone (%s)\n", knot_strerror(ret));
zone_update_clear(&up);
goto fail;
}
if (global_outdir == NULL) {
char *zonefile = conf_zonefile(conf(), zone_name);
ret = zonefile_write(zonefile, up.new_cont);
free(zonefile);
} else {
zone_contents_t *temp = zone_struct->contents;
zone_struct->contents = up.new_cont;
ret = zone_dump_to_dir(conf(), zone_struct, global_outdir);
zone_struct->contents = temp;
}
zone_update_clear(&up);
if (ret != KNOT_EOK) {
printf("Failed to flush signed zone file (%s)\n", knot_strerror(ret));
goto fail;
}
printf("Next signing: %"KNOT_TIME_PRINTF"\n", next_sign.next_sign);
if (rollover) {
printf("Next roll-over: %"KNOT_TIME_PRINTF"\n", next_sign.next_rollover);
if (next_sign.next_nsec3resalt) {
printf("Next NSEC3 re-salt: %"KNOT_TIME_PRINTF"\n", next_sign.next_nsec3resalt);
}
if (next_sign.plan_ds_check) {
printf("KSK submittion to parent zone needed\n");
}
}
fail:
if (kasp_db.path != NULL) {
knot_lmdb_deinit(&kasp_db);
}
zone_free(&zone_struct);
conf_free(conf());
free(zone_name);
return ret == KNOT_EOK ? EXIT_SUCCESS : EXIT_FAILURE;
}
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