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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.
*/
/*! \file
*/
#include <stdbool.h>
#include <stdlib.h>
#include <isc/app.h>
#include <isc/commandline.h>
#include <isc/managers.h>
#include <isc/mem.h>
#include <isc/netaddr.h>
#include <isc/print.h>
#include <isc/task.h>
#include <isc/timer.h>
#include <isc/util.h>
#include <dns/byaddr.h>
#include <dns/cache.h>
#include <dns/dispatch.h>
#include <dns/events.h>
#include <dns/forward.h>
#include <dns/resolver.h>
#include <dns/result.h>
#include <dns/view.h>
static void
done(isc_task_t *task, isc_event_t *event) {
dns_byaddrevent_t *bevent;
dns_byaddr_t *byaddr;
dns_name_t *name;
REQUIRE(event->ev_type == DNS_EVENT_BYADDRDONE);
bevent = (dns_byaddrevent_t *)event;
UNUSED(task);
printf("byaddr event result = %s\n", isc_result_totext(bevent->result));
if (bevent->result == ISC_R_SUCCESS) {
for (name = ISC_LIST_HEAD(bevent->names); name != NULL;
name = ISC_LIST_NEXT(name, link))
{
char text[DNS_NAME_FORMATSIZE];
dns_name_format(name, text, sizeof(text));
printf("%s\n", text);
}
}
byaddr = event->ev_sender;
dns_byaddr_destroy(&byaddr);
isc_event_free(&event);
isc_app_shutdown();
}
int
main(int argc, char *argv[]) {
isc_mem_t *mctx = NULL;
bool verbose = false;
unsigned int workers = 2;
isc_nm_t *netmgr = NULL;
isc_taskmgr_t *taskmgr = NULL;
isc_task_t *task = NULL;
isc_timermgr_t *timermgr = NULL;
dns_view_t *view = NULL;
int ch;
isc_socketmgr_t *socketmgr = NULL;
dns_dispatchmgr_t *dispatchmgr = NULL;
isc_netaddr_t na;
dns_byaddr_t *byaddr = NULL;
isc_result_t result;
unsigned int options = 0;
dns_cache_t *cache;
RUNTIME_CHECK(isc_app_start() == ISC_R_SUCCESS);
dns_result_register();
isc_mem_create(&mctx);
while ((ch = isc_commandline_parse(argc, argv, "nvw:")) != -1) {
switch (ch) {
case 'n':
/*
* We only try nibbles, so do nothing for this option.
*/
break;
case 'v':
verbose = true;
break;
case 'w':
workers = (unsigned int)atoi(isc_commandline_argument);
break;
}
}
if (verbose) {
printf("%u workers\n", workers);
printf("IPv4: %s\n", isc_result_totext(isc_net_probeipv4()));
printf("IPv6: %s\n", isc_result_totext(isc_net_probeipv6()));
}
RUNTIME_CHECK(isc_managers_create(mctx, workers, 0, &netmgr,
&taskmgr) == ISC_R_SUCCESS);
RUNTIME_CHECK(isc_task_create(taskmgr, 0, &task) == ISC_R_SUCCESS);
isc_task_setname(task, "byaddr", NULL);
RUNTIME_CHECK(dns_dispatchmgr_create(mctx, &dispatchmgr) ==
ISC_R_SUCCESS);
RUNTIME_CHECK(isc_timermgr_create(mctx, &timermgr) == ISC_R_SUCCESS);
RUNTIME_CHECK(isc_socketmgr_create(mctx, &socketmgr) == ISC_R_SUCCESS);
RUNTIME_CHECK(dns_cache_create(mctx, mctx, taskmgr, timermgr,
dns_rdataclass_in, "", "rbt", 0, NULL,
&cache) == ISC_R_SUCCESS);
RUNTIME_CHECK(dns_view_create(mctx, dns_rdataclass_in, "default",
&view) == ISC_R_SUCCESS);
{
unsigned int attrs;
dns_dispatch_t *disp4 = NULL;
dns_dispatch_t *disp6 = NULL;
if (isc_net_probeipv4() == ISC_R_SUCCESS) {
isc_sockaddr_t any4;
isc_sockaddr_any(&any4);
attrs = DNS_DISPATCHATTR_IPV4 | DNS_DISPATCHATTR_UDP;
RUNTIME_CHECK(
dns_dispatch_getudp(dispatchmgr, socketmgr,
taskmgr, &any4, 512, 6,
1024, 17, 19, attrs, attrs,
&disp4) == ISC_R_SUCCESS);
INSIST(disp4 != NULL);
}
if (isc_net_probeipv6() == ISC_R_SUCCESS) {
isc_sockaddr_t any6;
isc_sockaddr_any6(&any6);
attrs = DNS_DISPATCHATTR_IPV6 | DNS_DISPATCHATTR_UDP;
RUNTIME_CHECK(
dns_dispatch_getudp(dispatchmgr, socketmgr,
taskmgr, &any6, 512, 6,
1024, 17, 19, attrs, attrs,
&disp6) == ISC_R_SUCCESS);
INSIST(disp6 != NULL);
}
RUNTIME_CHECK(dns_view_createresolver(view, taskmgr, 10, 1,
socketmgr, timermgr, 0,
dispatchmgr, disp4,
disp6) == ISC_R_SUCCESS);
if (disp4 != NULL) {
dns_dispatch_detach(&disp4);
}
if (disp6 != NULL) {
dns_dispatch_detach(&disp6);
}
}
{
struct in_addr ina;
isc_sockaddr_t sa;
isc_sockaddrlist_t sal;
ISC_LIST_INIT(sal);
ina.s_addr = inet_addr("127.0.0.1");
isc_sockaddr_fromin(&sa, &ina, 53);
ISC_LIST_APPEND(sal, &sa, link);
RUNTIME_CHECK(dns_fwdtable_add(view->fwdtable, dns_rootname,
&sal, dns_fwdpolicy_only) ==
ISC_R_SUCCESS);
}
dns_view_setcache(view, cache, false);
dns_view_freeze(view);
dns_cache_detach(&cache);
printf("address = %s\n", argv[isc_commandline_index]);
na.family = AF_INET;
if (inet_pton(AF_INET, argv[isc_commandline_index],
(char *)&na.type.in) != 1)
{
na.family = AF_INET6;
if (inet_pton(AF_INET6, argv[isc_commandline_index],
(char *)&na.type.in6) != 1)
{
printf("unknown address format\n");
exit(1);
}
}
result = dns_byaddr_create(mctx, &na, view, options, task, done, NULL,
&byaddr);
if (result != ISC_R_SUCCESS) {
printf("dns_byaddr_create() returned %s\n",
isc_result_totext(result));
RUNTIME_CHECK(0);
}
(void)isc_app_run();
/*
* XXXRTH if we get a control-C before we get to isc_app_run(),
* we're in trouble (because we might try to destroy things before
* they've been created.
*/
dns_view_detach(&view);
isc_task_shutdown(task);
isc_task_detach(&task);
dns_dispatchmgr_destroy(&dispatchmgr);
isc_managers_destroy(&netmgr, &taskmgr);
isc_socketmgr_destroy(&socketmgr);
isc_timermgr_destroy(&timermgr);
if (verbose) {
isc_mem_stats(mctx, stdout);
}
isc_mem_destroy(&mctx);
isc_app_finish();
return (0);
}
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