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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 <libgen.h>
#include <stdio.h>
#include "contrib/time.h"
#include "contrib/tolower.h"
#include "libknot/libknot.h"
#include "knot/common/log.h"
#include "knot/zone/semantic-check.h"
#include "utils/common/msg.h"
#include "utils/common/params.h"
#include "utils/kzonecheck/zone_check.h"
#define PROGRAM_NAME "kzonecheck"
#define STDIN_SUBST "-"
#define STDIN_REPL "/dev/stdin"
static void print_help(void)
{
printf("Usage: %s [options] <filename>\n"
"\n"
"Options:\n"
" -o, --origin <zone_origin> Zone name.\n"
" (default filename without .zone)\n"
" -d, --dnssec <on|off> Also check DNSSEC-related records.\n"
" -t, --time <timestamp> Current time specification.\n"
" (default current UNIX time)\n"
" -p, --print Print the zone on stdout.\n"
" -v, --verbose Enable debug output.\n"
" -h, --help Print the program help.\n"
" -V, --version Print the program version.\n",
PROGRAM_NAME);
}
static bool str2bool(const char *s)
{
switch (knot_tolower(s[0])) {
case '1':
case 'y':
case 't':
return true;
case 'o':
return knot_tolower(s[1]) == 'n';
default:
return false;
}
}
int main(int argc, char *argv[])
{
const char *origin = NULL;
bool verbose = false, print = false;
semcheck_optional_t optional = SEMCHECK_DNSSEC_AUTO; // default value for --dnssec
knot_time_t check_time = (knot_time_t)time(NULL);
/* Long options. */
struct option opts[] = {
{ "origin", required_argument, NULL, 'o' },
{ "time", required_argument, NULL, 't' },
{ "dnssec", required_argument, NULL, 'd' },
{ "print", no_argument, NULL, 'p' },
{ "verbose", no_argument, NULL, 'v' },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{ NULL }
};
/* Set the time zone. */
tzset();
/* Parse command line arguments */
int opt = 0;
while ((opt = getopt_long(argc, argv, "o:t:d:pvVh", opts, NULL)) != -1) {
switch (opt) {
case 'o':
origin = optarg;
break;
case 'p':
print = true;
break;
case 'v':
verbose = true;
break;
case 'h':
print_help();
return EXIT_SUCCESS;
case 'V':
print_version(PROGRAM_NAME);
return EXIT_SUCCESS;
case 'd':
optional = str2bool(optarg) ? SEMCHECK_DNSSEC_ON : SEMCHECK_DNSSEC_OFF;
break;
case 't':
if (knot_time_parse("YMDhms|#|+-#U|+-#",
optarg, &check_time) != KNOT_EOK) {
ERR2("unknown time format");
return EXIT_FAILURE;
}
break;
default:
print_help();
return EXIT_FAILURE;
}
}
/* Check if there's at least one remaining non-option. */
if (optind >= argc) {
ERR2("expected zone file name");
print_help();
return EXIT_FAILURE;
}
char *filename = argv[optind];
if (strncmp(filename, STDIN_SUBST, sizeof(STDIN_SUBST)) == 0) {
filename = STDIN_REPL;
}
char *zonename;
if (origin == NULL) {
/* Get zone name from file name. */
const char *ext = ".zone";
zonename = basename(filename);
if (strcmp(zonename + strlen(zonename) - strlen(ext), ext) == 0) {
zonename = strndup(zonename, strlen(zonename) - strlen(ext));
} else {
zonename = strdup(zonename);
}
} else {
zonename = strdup(origin);
}
log_init();
log_levels_set(LOG_TARGET_STDOUT, LOG_SOURCE_ANY, 0);
log_levels_set(LOG_TARGET_STDERR, LOG_SOURCE_ANY, 0);
log_levels_set(LOG_TARGET_SYSLOG, LOG_SOURCE_ANY, 0);
log_flag_set(LOG_FLAG_NOTIMESTAMP | LOG_FLAG_NOINFO);
if (verbose) {
log_levels_add(LOG_TARGET_STDOUT, LOG_SOURCE_ANY, LOG_UPTO(LOG_DEBUG));
}
knot_dname_t *dname = knot_dname_from_str_alloc(zonename);
knot_dname_to_lower(dname);
free(zonename);
int ret = zone_check(filename, dname, optional, (time_t)check_time, print);
knot_dname_free(dname, NULL);
log_close();
switch (ret) {
case KNOT_EOK:
if (verbose) {
INFO2("No semantic error found");
}
return EXIT_SUCCESS;
case KNOT_EZONEINVAL:
ERR2("serious semantic error detected");
// FALLTHROUGH
case KNOT_ESEMCHECK:
return EXIT_FAILURE;
case KNOT_EACCES:
case KNOT_EFILE:
ERR2("failed to load the zone file");
return EXIT_FAILURE;
default:
ERR2("failed to run semantic checks (%s)", knot_strerror(ret));
return EXIT_FAILURE;
}
}
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