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-rw-r--r--src/utils/kzonesign/main.c283
1 files changed, 283 insertions, 0 deletions
diff --git a/src/utils/kzonesign/main.c b/src/utils/kzonesign/main.c
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--- /dev/null
+++ b/src/utils/kzonesign/main.c
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+/* Copyright (C) 2023 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/dnssec/zone-events.h"
+#include "knot/updates/zone-update.h"
+#include "knot/server/server.h"
+#include "knot/zone/adjust.h"
+#include "knot/zone/zone-load.h"
+#include "knot/zone/zonefile.h"
+#include "utils/common/msg.h"
+#include "utils/common/params.h"
+#include "utils/common/signal.h"
+#include "utils/common/util_conf.h"
+#include "contrib/strtonum.h"
+
+#define PROGRAM_NAME "kzonesign"
+
+signal_ctx_t signal_ctx = { 0 }; // global, needed by signal handler
+
+static void print_help(void)
+{
+ printf("Usage: %s [-c | -C <path>] [options] <zone_name>\n"
+ "\n"
+ "Config options:\n"
+ " -c, --config <file> Path to a textual configuration file.\n"
+ " (default %s)\n"
+ " -C, --confdb <dir> Path to a configuration database directory.\n"
+ " (default %s)\n"
+ "Options:\n"
+ " -o, --outdir <dir_name> Output directory.\n"
+ " -r, --rollover Allow key rollovers and NSEC3 re-salt.\n"
+ " -v, --verify Only verify if zone is signed correctly.\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",
+ PROGRAM_NAME, CONF_DEFAULT_FILE, CONF_DEFAULT_DBDIR);
+}
+
+typedef struct {
+ const char *zone_name_str;
+ knot_dname_storage_t zone_name;
+ const char *outdir;
+ zone_sign_roll_flags_t rollover;
+ int64_t timestamp;
+ bool verify;
+} sign_params_t;
+
+static int zonesign(sign_params_t *params)
+{
+ char *zonefile = NULL;
+ zone_contents_t *unsigned_conts = NULL;
+ zone_t *zone_struct = NULL;
+ zone_update_t up = { 0 };
+ server_t fake_server = { 0 };
+ zone_sign_reschedule_t next_sign = { 0 };
+ int ret = KNOT_ERROR;
+
+ // set the kaspdb for close in emergency
+ signal_ctx.close_db = &fake_server.kaspdb;
+
+ conf_val_t val = conf_zone_get(conf(), C_DOMAIN, params->zone_name);
+ if (val.code != KNOT_EOK) {
+ ERR2("zone '%s' not configured", params->zone_name_str);
+ ret = KNOT_ENOENT;
+ goto fail;
+ }
+ val = conf_zone_get(conf(), C_DNSSEC_POLICY, params->zone_name);
+ if (val.code != KNOT_EOK) {
+ WARN2("DNSSEC policy not configured for zone '%s', taking defaults",
+ params->zone_name_str);
+ }
+
+ zone_struct = zone_new(params->zone_name);
+ if (zone_struct == NULL) {
+ ERR2("out of memory");
+ ret = KNOT_ENOMEM;
+ goto fail;
+ }
+
+ ret = zone_load_contents(conf(), params->zone_name, &unsigned_conts,
+ SEMCHECK_MANDATORY_SOFT, false);
+ if (ret != KNOT_EOK) {
+ ERR2("failed to load zone contents (%s)", knot_strerror(ret));
+ goto fail;
+ }
+
+ ret = zone_update_from_contents(&up, zone_struct, unsigned_conts, UPDATE_FULL);
+ if (ret != KNOT_EOK) {
+ ERR2("failed to initialize zone update (%s)", knot_strerror(ret));
+ zone_contents_deep_free(unsigned_conts);
+ goto fail;
+ }
+
+ if (params->verify) {
+ val = conf_zone_get(conf(), C_ADJUST_THR, params->zone_name);
+ ret = zone_adjust_full(up.new_cont, conf_int(&val));
+ if (ret != KNOT_EOK) {
+ ERR2("failed to adjust the zone (%s)", knot_strerror(ret));
+ zone_update_clear(&up);
+ goto fail;
+ }
+
+ ret = knot_dnssec_validate_zone(&up, conf(), params->timestamp, false);
+ if (ret != KNOT_EOK) {
+ ERR2("DNSSEC validation failed (%s)", knot_strerror(ret));
+ char type_str[16];
+ knot_dname_txt_storage_t name_str;
+ if (knot_dname_to_str(name_str, up.validation_hint.node, sizeof(name_str)) != NULL &&
+ knot_rrtype_to_string(up.validation_hint.rrtype, type_str, sizeof(type_str)) >= 0) {
+ ERR2("affected node: '%s' type '%s'", name_str, type_str);
+ }
+ } else {
+ INFO2("DNSSEC validation successful");
+ }
+ zone_update_clear(&up);
+ goto fail;
+ }
+
+ kasp_db_ensure_init(&fake_server.kaspdb, conf());
+ zone_struct->server = &fake_server;
+
+ ret = knot_dnssec_zone_sign(&up, conf(), 0, params->rollover,
+ params->timestamp, &next_sign);
+ if (ret == KNOT_DNSSEC_ENOKEY) { // exception: allow generating initial keys
+ params->rollover = KEY_ROLL_ALLOW_ALL;
+ ret = knot_dnssec_zone_sign(&up, conf(), 0, params->rollover,
+ params->timestamp, &next_sign);
+ }
+ if (ret != KNOT_EOK) {
+ ERR2("failed to sign the zone (%s)", knot_strerror(ret));
+ zone_update_clear(&up);
+ goto fail;
+ }
+
+ if (params->outdir == NULL) {
+ zonefile = conf_zonefile(conf(), params->zone_name);
+ ret = zonefile_write(zonefile, up.new_cont);
+ } else {
+ zone_contents_t *temp = zone_struct->contents;
+ zone_struct->contents = up.new_cont;
+ ret = zone_dump_to_dir(conf(), zone_struct, params->outdir);
+ zone_struct->contents = temp;
+ }
+ zone_update_clear(&up);
+ if (ret != KNOT_EOK) {
+ if (params->outdir == NULL) {
+ ERR2("failed to update zone file '%s' (%s)",
+ zonefile, knot_strerror(ret));
+ } else {
+ ERR2("failed to flush signed zone to '%s' file (%s)",
+ params->outdir, knot_strerror(ret));
+
+ }
+ goto fail;
+ }
+
+ INFO2("Next signing: %"KNOT_TIME_PRINTF, next_sign.next_sign);
+ if (params->rollover) {
+ INFO2("Next roll-over: %"KNOT_TIME_PRINTF, next_sign.next_rollover);
+ if (next_sign.next_nsec3resalt) {
+ INFO2("Next NSEC3 re-salt: %"KNOT_TIME_PRINTF, next_sign.next_nsec3resalt);
+ }
+ if (next_sign.plan_ds_check) {
+ INFO2("KSK submission to parent zone needed");
+ }
+ }
+
+fail:
+ if (fake_server.kaspdb.path != NULL) {
+ knot_lmdb_deinit(&fake_server.kaspdb);
+ }
+ zone_free(&zone_struct);
+ free(zonefile);
+
+ return ret;
+}
+
+int main(int argc, char *argv[])
+{
+ sign_params_t params = { 0 };
+
+ struct option opts[] = {
+ { "config", required_argument, NULL, 'c' },
+ { "confdb", required_argument, NULL, 'C' },
+ { "outdir", required_argument, NULL, 'o' },
+ { "rollover", no_argument, NULL, 'r' },
+ { "verify" , no_argument, NULL, 'v' },
+ { "time", required_argument, NULL, 't' },
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
+ { NULL }
+ };
+
+ tzset();
+ signal_init_std();
+
+ int opt = 0;
+ while ((opt = getopt_long(argc, argv, "c:C:o:rvt:hV", opts, NULL)) != -1) {
+ switch (opt) {
+ case 'c':
+ if (util_conf_init_file(optarg) != KNOT_EOK) {
+ goto failure;
+ }
+ break;
+ case 'C':
+ if (util_conf_init_confdb(optarg) != KNOT_EOK) {
+ goto failure;
+ }
+ break;
+ case 'o':
+ params.outdir = optarg;
+ break;
+ case 'r':
+ params.rollover = KEY_ROLL_ALLOW_ALL;
+ break;
+ case 'v':
+ params.verify = true;
+ break;
+ case 't':
+ ; uint32_t num = 0;
+ if (str_to_u32(optarg, &num) != KNOT_EOK || num == 0) {
+ print_help();
+ goto failure;
+ }
+ params.timestamp = num;
+ break;
+ case 'h':
+ print_help();
+ goto success;
+ case 'V':
+ print_version(PROGRAM_NAME);
+ goto success;
+ default:
+ print_help();
+ goto failure;
+ }
+ }
+ if (argc - optind != 1) {
+ ERR2("missing zone name");
+ print_help();
+ goto failure;
+ }
+ params.zone_name_str = argv[optind];
+ if (knot_dname_from_str(params.zone_name, params.zone_name_str,
+ sizeof(params.zone_name)) == NULL) {
+ ERR2("invalid zone name '%s'", params.zone_name_str);
+ print_help();
+ goto failure;
+ }
+ knot_dname_to_lower(params.zone_name);
+
+ if (util_conf_init_default(false) != KNOT_EOK) {
+ goto failure;
+ }
+
+ if (zonesign(&params) != KNOT_EOK) {
+ goto failure;
+ }
+
+success:
+ util_conf_deinit();
+ return EXIT_SUCCESS;
+failure:
+ util_conf_deinit();
+ return EXIT_FAILURE;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 11:51:51 +0000