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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include <stdbool.h>
#include <stdlib.h>
#include <isc/mem.h>
#include <isc/print.h>
#include <isc/string.h>
#include <dns/db.h>
#include <dns/dbiterator.h>
#include <dns/fixedname.h>
#include <dns/nsec.h>
#include <dns/rdataset.h>
#include <dns/rdatasetiter.h>
#include <dns/result.h>
static isc_mem_t *mctx = NULL;
ISC_PLATFORM_NORETURN_PRE static void
fatal(const char *message) ISC_PLATFORM_NORETURN_POST;
static void
fatal(const char *message) {
fprintf(stderr, "%s\n", message);
exit(1);
}
static void
check_result(isc_result_t result, const char *message) {
if (result != ISC_R_SUCCESS) {
fprintf(stderr, "%s: %s\n", message, isc_result_totext(result));
exit(1);
}
}
static bool
active_node(dns_db_t *db, dns_dbversion_t *version, dns_dbnode_t *node) {
dns_rdatasetiter_t *rdsiter;
bool active = false;
isc_result_t result;
dns_rdataset_t rdataset;
dns_rdataset_init(&rdataset);
rdsiter = NULL;
result = dns_db_allrdatasets(db, node, version, 0, 0, &rdsiter);
check_result(result, "dns_db_allrdatasets()");
result = dns_rdatasetiter_first(rdsiter);
while (result == ISC_R_SUCCESS) {
dns_rdatasetiter_current(rdsiter, &rdataset);
if (rdataset.type != dns_rdatatype_nsec) {
active = true;
}
dns_rdataset_disassociate(&rdataset);
if (!active) {
result = dns_rdatasetiter_next(rdsiter);
} else {
result = ISC_R_NOMORE;
}
}
if (result != ISC_R_NOMORE) {
fatal("rdataset iteration failed");
}
dns_rdatasetiter_destroy(&rdsiter);
if (!active) {
/*
* Make sure there is no NSEC record for this node.
*/
result = dns_db_deleterdataset(db, node, version,
dns_rdatatype_nsec, 0);
if (result == DNS_R_UNCHANGED) {
result = ISC_R_SUCCESS;
}
check_result(result, "dns_db_deleterdataset");
}
return (active);
}
static isc_result_t
next_active(dns_db_t *db, dns_dbversion_t *version, dns_dbiterator_t *dbiter,
dns_name_t *name, dns_dbnode_t **nodep) {
isc_result_t result;
bool active;
do {
active = false;
result = dns_dbiterator_current(dbiter, nodep, name);
if (result == ISC_R_SUCCESS) {
active = active_node(db, version, *nodep);
if (!active) {
dns_db_detachnode(db, nodep);
result = dns_dbiterator_next(dbiter);
}
}
} while (result == ISC_R_SUCCESS && !active);
return (result);
}
static void
nsecify(char *filename) {
isc_result_t result;
dns_db_t *db;
dns_dbversion_t *wversion;
dns_dbnode_t *node, *nextnode;
const char *origintext;
dns_fixedname_t fname, fnextname;
dns_name_t *name, *nextname, *target;
isc_buffer_t b;
size_t len;
dns_dbiterator_t *dbiter;
char newfilename[1024];
name = dns_fixedname_initname(&fname);
nextname = dns_fixedname_initname(&fnextname);
origintext = strrchr(filename, '/');
if (origintext == NULL) {
origintext = filename;
} else {
origintext++; /* Skip '/'. */
}
len = strlen(origintext);
isc_buffer_constinit(&b, origintext, len);
isc_buffer_add(&b, len);
result = dns_name_fromtext(name, &b, dns_rootname, 0, NULL);
check_result(result, "dns_name_fromtext()");
db = NULL;
result = dns_db_create(mctx, "rbt", name, dns_dbtype_zone,
dns_rdataclass_in, 0, NULL, &db);
check_result(result, "dns_db_create()");
result = dns_db_load(db, filename, dns_masterformat_text, 0);
if (result == DNS_R_SEENINCLUDE) {
result = ISC_R_SUCCESS;
}
check_result(result, "dns_db_load()");
wversion = NULL;
result = dns_db_newversion(db, &wversion);
check_result(result, "dns_db_newversion()");
dbiter = NULL;
result = dns_db_createiterator(db, 0, &dbiter);
check_result(result, "dns_db_createiterator()");
result = dns_dbiterator_first(dbiter);
check_result(result, "dns_dbiterator_first()");
node = NULL;
result = next_active(db, wversion, dbiter, name, &node);
while (result == ISC_R_SUCCESS) {
nextnode = NULL;
result = dns_dbiterator_next(dbiter);
if (result == ISC_R_SUCCESS) {
result = next_active(db, wversion, dbiter, nextname,
&nextnode);
}
if (result == ISC_R_SUCCESS) {
target = nextname;
} else if (result == ISC_R_NOMORE) {
target = dns_db_origin(db);
} else {
target = NULL; /* Make compiler happy. */
fatal("db iteration failed");
}
dns_nsec_build(db, wversion, node, target, 3600); /* XXX BEW */
dns_db_detachnode(db, &node);
node = nextnode;
}
if (result != ISC_R_NOMORE) {
fatal("db iteration failed");
}
dns_dbiterator_destroy(&dbiter);
/*
* XXXRTH For now, we don't increment the SOA serial.
*/
dns_db_closeversion(db, &wversion, true);
len = strlen(filename);
if (len + 4 + 1 > sizeof(newfilename)) {
fatal("filename too long");
}
snprintf(newfilename, sizeof(newfilename), "%s.new", filename);
result = dns_db_dump(db, NULL, newfilename);
check_result(result, "dns_db_dump");
dns_db_detach(&db);
}
int
main(int argc, char *argv[]) {
int i;
dns_result_register();
isc_mem_create(&mctx);
argc--;
argv++;
for (i = 0; i < argc; i++) {
nsecify(argv[i]);
}
/* isc_mem_stats(mctx, stdout); */
isc_mem_destroy(&mctx);
return (0);
}
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