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/*
* nsd-checkzone.c -- nsd-checkzone(8) checks zones for syntax errors
*
* Copyright (c) 2013, NLnet Labs. All rights reserved.
*
* See LICENSE for the license.
*
*/
#include "config.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <errno.h>
#include "nsd.h"
#include "options.h"
#include "util.h"
#include "zonec.h"
#include "ixfr.h"
#include "ixfrcreate.h"
#include "difffile.h"
struct nsd nsd;
/*
* Print the help text.
*
*/
static void
usage (void)
{
fprintf(stderr, "Usage: nsd-checkzone [-p] <zone name> <zone file>\n");
fprintf(stderr, "\t-p\tprint the zone if the zone is ok\n");
fprintf(stderr, "\t-i <old zone file>\tcreate an IXFR from the differences between the\n\t\told zone file and the new zone file. Writes to \n\t\t<zonefile>.ixfr and renames other <zonefile>.ixfr files to\n\t\t<zonefile>.ixfr.num+1.\n");
fprintf(stderr, "\t-n <ixfr number>\tnumber of IXFR versions to store, at most.\n\t\tdefault %d.\n", (int)IXFR_NUMBER_DEFAULT);
fprintf(stderr, "\t-s <ixfr size>\tsize of IXFR to store, at most. default %d.\n", (int)IXFR_SIZE_DEFAULT);
fprintf(stderr, "Version %s. Report bugs to <%s>.\n",
PACKAGE_VERSION, PACKAGE_BUGREPORT);
}
static void
check_zone(struct nsd* nsd, const char* name, const char* fname, FILE *out,
const char* oldzone, uint32_t ixfr_number, uint64_t ixfr_size)
{
const dname_type* dname;
zone_options_type* zo;
zone_type* zone;
unsigned errors;
struct ixfr_create* ixfrcr = NULL;
/* init*/
nsd->db = namedb_open("", nsd->options);
dname = dname_parse(nsd->options->region, name);
if(!dname) {
/* parse failure */
error("cannot parse zone name '%s'", name);
}
zo = zone_options_create(nsd->options->region);
memset(zo, 0, sizeof(*zo));
zo->node.key = dname;
zo->name = name;
zone = namedb_zone_create(nsd->db, dname, zo);
if(oldzone) {
errors = zonec_read(name, oldzone, zone);
if(errors > 0) {
printf("zone %s file %s has %u errors\n", name, oldzone, errors);
exit(1);
}
ixfrcr = ixfr_create_start(zone, fname, ixfr_size, 1);
if(!ixfrcr) {
error("out of memory");
}
delete_zone_rrs(nsd->db, zone);
}
/* read the zone */
errors = zonec_read(name, fname, zone);
if(errors > 0) {
printf("zone %s file %s has %u errors\n", name, fname, errors);
ixfr_create_cancel(ixfrcr);
#ifdef MEMCLEAN /* otherwise, the OS collects memory pages */
namedb_close(nsd->db);
region_destroy(nsd->options->region);
#endif
exit(1);
}
if(ixfrcr) {
if(!ixfr_create_perform(ixfrcr, zone, 0, nsd, fname,
ixfr_number)) {
#ifdef MEMCLEAN /* otherwise, the OS collects memory pages */
namedb_close(nsd->db);
region_destroy(nsd->options->region);
ixfr_create_free(ixfrcr);
#endif
error("could not create IXFR");
}
printf("zone %s created IXFR %s.ixfr\n", name, fname);
ixfr_create_free(ixfrcr);
}
if (out) {
print_rrs(out, zone);
printf("; ");
}
printf("zone %s is ok\n", name);
namedb_close(nsd->db);
}
/* dummy functions to link */
int writepid(struct nsd * ATTR_UNUSED(nsd))
{
return 0;
}
void unlinkpid(const char * ATTR_UNUSED(file))
{
}
void bind8_stats(struct nsd * ATTR_UNUSED(nsd))
{
}
void sig_handler(int ATTR_UNUSED(sig))
{
}
extern char *optarg;
extern int optind;
int
main(int argc, char *argv[])
{
/* Scratch variables... */
int c;
int print_zone = 0;
uint32_t ixfr_number = IXFR_NUMBER_DEFAULT;
uint64_t ixfr_size = IXFR_SIZE_DEFAULT;
char* oldzone = NULL;
struct nsd nsd;
memset(&nsd, 0, sizeof(nsd));
log_init("nsd-checkzone");
/* Parse the command line... */
while ((c = getopt(argc, argv, "hi:n:ps:")) != -1) {
switch (c) {
case 'h':
usage();
exit(0);
case 'i':
oldzone = optarg;
break;
case 'n':
ixfr_number = (uint32_t)atoi(optarg);
break;
case 'p':
print_zone = 1;
break;
case 's':
ixfr_size = (uint64_t)atoi(optarg);
break;
case '?':
default:
usage();
exit(1);
}
}
argc -= optind;
argv += optind;
/* Commandline parse error */
if (argc != 2) {
fprintf(stderr, "wrong number of arguments.\n");
usage();
exit(1);
}
nsd.options = nsd_options_create(region_create_custom(xalloc, free,
DEFAULT_CHUNK_SIZE, DEFAULT_LARGE_OBJECT_SIZE,
DEFAULT_INITIAL_CLEANUP_SIZE, 1));
if (verbosity == 0)
verbosity = nsd.options->verbosity;
check_zone(&nsd, argv[0], argv[1], print_zone ? stdout : NULL,
oldzone, ixfr_number, ixfr_size);
region_destroy(nsd.options->region);
/* yylex_destroy(); but, not available in all versions of flex */
exit(0);
}
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