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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.
*/
/*
* -a exit(0) if dnsrps is available or dlopen() msg if not
* -p print the path to dnsrpzd configured in dnsrps so that
* dnsrpzd can be run by a setup.sh script.
* Exit(1) if dnsrps is not available
* -n domain print the serial number of a domain to check if a new
* version of a policy zone has been transferred to dnsrpzd.
* Exit(1) if dnsrps is not available
* -w sec.ond wait for seconds, because `sleep 0.1` is not portable
*/
#include <errno.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <isc/print.h>
#include <isc/util.h>
#ifdef USE_DNSRPS
#define LIBRPZ_LIB_OPEN DNSRPS_LIB_OPEN
#include <dns/librpz.h>
librpz_t *librpz;
#else /* ifdef USE_DNSRPS */
typedef struct {
char c[120];
} librpz_emsg_t;
#endif /* ifdef USE_DNSRPS */
static bool
link_dnsrps(librpz_emsg_t *emsg);
#define USAGE "usage: [-ap] [-n domain] [-w sec.onds]\n"
int
main(int argc, char **argv) {
#ifdef USE_DNSRPS
char cstr[sizeof("zone ") + 1024 + 10];
librpz_clist_t *clist;
librpz_client_t *client;
librpz_rsp_t *rsp;
uint32_t serial;
#endif /* ifdef USE_DNSRPS */
double seconds;
librpz_emsg_t emsg;
char *p;
int i;
while ((i = getopt(argc, argv, "apn:w:")) != -1) {
switch (i) {
case 'a':
if (!link_dnsrps(&emsg)) {
printf("I:%s\n", emsg.c);
return (1);
}
return (0);
case 'p':
if (!link_dnsrps(&emsg)) {
fprintf(stderr, "## %s\n", emsg.c);
return (1);
}
#ifdef USE_DNSRPS
printf("%s\n", librpz->dnsrpzd_path);
#else /* ifdef USE_DNSRPS */
UNREACHABLE();
#endif /* ifdef USE_DNSRPS */
return (0);
case 'n':
if (!link_dnsrps(&emsg)) {
fprintf(stderr, "## %s\n", emsg.c);
return (1);
}
#ifdef USE_DNSRPS
/*
* Get the serial number of a policy zone from
* a running dnsrpzd daemon.
*/
clist = librpz->clist_create(&emsg, NULL, NULL, NULL,
NULL, NULL);
if (clist == NULL) {
fprintf(stderr, "## %s: %s\n", optarg, emsg.c);
return (1);
}
snprintf(cstr, sizeof(cstr),
"zone %s; dnsrpzd \"\";"
" dnsrpzd-sock dnsrpzd.sock;"
" dnsrpzd-rpzf dnsrpzd.rpzf",
optarg);
client = librpz->client_create(&emsg, clist, cstr,
true);
if (client == NULL) {
fprintf(stderr, "## %s\n", emsg.c);
return (1);
}
rsp = NULL;
if (!librpz->rsp_create(&emsg, &rsp, NULL, client, true,
false) ||
rsp == NULL)
{
fprintf(stderr, "## %s\n", emsg.c);
librpz->client_detach(&client);
return (1);
}
if (!librpz->soa_serial(&emsg, &serial, optarg, rsp)) {
fprintf(stderr, "## %s\n", emsg.c);
librpz->client_detach(&client);
return (1);
}
librpz->rsp_detach(&rsp);
librpz->client_detach(&client);
printf("%u\n", serial);
#else /* ifdef USE_DNSRPS */
UNREACHABLE();
#endif /* ifdef USE_DNSRPS */
return (0);
case 'w':
seconds = strtod(optarg, &p);
if (seconds <= 0 || *p != '\0') {
fputs(USAGE, stderr);
return (1);
}
usleep((int)(seconds * 1000.0 * 1000.0));
return (0);
default:
fputs(USAGE, stderr);
return (1);
}
}
fputs(USAGE, stderr);
return (1);
}
static bool
link_dnsrps(librpz_emsg_t *emsg) {
#ifdef USE_DNSRPS
librpz = librpz_lib_open(emsg, NULL, DNSRPS_LIBRPZ_PATH);
if (librpz == NULL) {
return (false);
}
return (true);
#else /* ifdef USE_DNSRPS */
snprintf(emsg->c, sizeof(emsg->c), "DNSRPS not configured");
return (false);
#endif /* ifdef USE_DNSRPS */
}
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