Adding upstream version 1:9.18.19.upstream/1%9.18.19upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 698 insertions, 0 deletions

diff --git a/tests/dns/dispatch_test.c b/tests/dns/dispatch_test.c
new file mode 100644
index 0000000..c101744
--- /dev/null
+++ b/tests/dns/dispatch_test.c
@@ -0,0 +1,698 @@
+/*
+ * 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 <inttypes.h>
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <uv.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/buffer.h>
+#include <isc/managers.h>
+#include <isc/refcount.h>
+#include <isc/task.h>
+#include <isc/util.h>
+
+#include <dns/dispatch.h>
+#include <dns/name.h>
+#include <dns/view.h>
+
+#include <tests/dns.h>
+
+uv_sem_t sem;
+
+/* Timeouts in miliseconds */
+#define T_SERVER_INIT	    5000
+#define T_SERVER_IDLE	    5000
+#define T_SERVER_KEEPALIVE  5000
+#define T_SERVER_ADVERTISED 5000
+
+#define T_CLIENT_INIT	    2000
+#define T_CLIENT_IDLE	    2000
+#define T_CLIENT_KEEPALIVE  2000
+#define T_CLIENT_ADVERTISED 2000
+
+#define T_CLIENT_CONNECT 1000
+
+dns_dispatchmgr_t *dispatchmgr = NULL;
+dns_dispatchset_t *dset = NULL;
+isc_nm_t *connect_nm = NULL;
+static isc_sockaddr_t udp_server_addr;
+static isc_sockaddr_t udp_connect_addr;
+static isc_sockaddr_t tcp_server_addr;
+static isc_sockaddr_t tcp_connect_addr;
+
+const struct in6_addr in6addr_blackhole = { { { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+						0, 0, 0, 0, 1 } } };
+
+static int
+setup_ephemeral_port(isc_sockaddr_t *addr, sa_family_t family) {
+	socklen_t addrlen = sizeof(*addr);
+	uv_os_sock_t fd;
+	int r;
+
+	isc_sockaddr_fromin6(addr, &in6addr_loopback, 0);
+
+	fd = socket(AF_INET6, family, 0);
+	if (fd < 0) {
+		perror("setup_ephemeral_port: socket()");
+		return (-1);
+	}
+
+	r = bind(fd, (const struct sockaddr *)&addr->type.sa,
+		 sizeof(addr->type.sin6));
+	if (r != 0) {
+		perror("setup_ephemeral_port: bind()");
+		close(fd);
+		return (r);
+	}
+
+	r = getsockname(fd, (struct sockaddr *)&addr->type.sa, &addrlen);
+	if (r != 0) {
+		perror("setup_ephemeral_port: getsockname()");
+		close(fd);
+		return (r);
+	}
+
+#if IPV6_RECVERR
+#define setsockopt_on(socket, level, name) \
+	setsockopt(socket, level, name, &(int){ 1 }, sizeof(int))
+
+	r = setsockopt_on(fd, IPPROTO_IPV6, IPV6_RECVERR);
+	if (r != 0) {
+		perror("setup_ephemeral_port");
+		close(fd);
+		return (r);
+	}
+#endif
+
+	return (fd);
+}
+
+static void
+reset_testdata(void);
+
+static int
+_setup(void **state) {
+	uv_os_sock_t sock = -1;
+	int r;
+
+	udp_connect_addr = (isc_sockaddr_t){ .length = 0 };
+	isc_sockaddr_fromin6(&udp_connect_addr, &in6addr_loopback, 0);
+
+	tcp_connect_addr = (isc_sockaddr_t){ .length = 0 };
+	isc_sockaddr_fromin6(&tcp_connect_addr, &in6addr_loopback, 0);
+
+	udp_server_addr = (isc_sockaddr_t){ .length = 0 };
+	sock = setup_ephemeral_port(&udp_server_addr, SOCK_DGRAM);
+	if (sock < 0) {
+		return (-1);
+	}
+	close(sock);
+
+	tcp_server_addr = (isc_sockaddr_t){ .length = 0 };
+	sock = setup_ephemeral_port(&tcp_server_addr, SOCK_STREAM);
+	if (sock < 0) {
+		return (-1);
+	}
+	close(sock);
+
+	setup_managers(state);
+
+	/* Create a secondary network manager */
+	isc_managers_create(mctx, workers, 0, &connect_nm, NULL, NULL);
+
+	isc_nm_settimeouts(netmgr, T_SERVER_INIT, T_SERVER_IDLE,
+			   T_SERVER_KEEPALIVE, T_SERVER_ADVERTISED);
+
+	/*
+	 * Use shorter client-side timeouts, to ensure that clients
+	 * time out before the server.
+	 */
+	isc_nm_settimeouts(connect_nm, T_CLIENT_INIT, T_CLIENT_IDLE,
+			   T_CLIENT_KEEPALIVE, T_CLIENT_ADVERTISED);
+
+	r = uv_sem_init(&sem, 0);
+	assert_int_equal(r, 0);
+
+	reset_testdata();
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	uv_sem_destroy(&sem);
+
+	isc_managers_destroy(&connect_nm, NULL, NULL);
+	assert_null(connect_nm);
+
+	teardown_managers(state);
+
+	return (0);
+}
+
+static isc_result_t
+make_dispatchset(unsigned int ndisps) {
+	isc_result_t result;
+	isc_sockaddr_t any;
+	dns_dispatch_t *disp = NULL;
+
+	result = dns_dispatchmgr_create(mctx, netmgr, &dispatchmgr);
+	if (result != ISC_R_SUCCESS) {
+		return (result);
+	}
+
+	isc_sockaddr_any(&any);
+	result = dns_dispatch_createudp(dispatchmgr, &any, &disp);
+	if (result != ISC_R_SUCCESS) {
+		return (result);
+	}
+
+	result = dns_dispatchset_create(mctx, disp, &dset, ndisps);
+	dns_dispatch_detach(&disp);
+
+	return (result);
+}
+
+static void
+reset(void) {
+	if (dset != NULL) {
+		dns_dispatchset_destroy(&dset);
+	}
+	if (dispatchmgr != NULL) {
+		dns_dispatchmgr_detach(&dispatchmgr);
+	}
+}
+
+/* create dispatch set */
+ISC_RUN_TEST_IMPL(dispatchset_create) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = make_dispatchset(1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	reset();
+
+	result = make_dispatchset(10);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	reset();
+}
+
+/* test dispatch set round-robin */
+ISC_RUN_TEST_IMPL(dispatchset_get) {
+	isc_result_t result;
+	dns_dispatch_t *d1, *d2, *d3, *d4, *d5;
+
+	UNUSED(state);
+
+	result = make_dispatchset(1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	d1 = dns_dispatchset_get(dset);
+	d2 = dns_dispatchset_get(dset);
+	d3 = dns_dispatchset_get(dset);
+	d4 = dns_dispatchset_get(dset);
+	d5 = dns_dispatchset_get(dset);
+
+	assert_ptr_equal(d1, d2);
+	assert_ptr_equal(d2, d3);
+	assert_ptr_equal(d3, d4);
+	assert_ptr_equal(d4, d5);
+
+	reset();
+
+	result = make_dispatchset(4);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	d1 = dns_dispatchset_get(dset);
+	d2 = dns_dispatchset_get(dset);
+	d3 = dns_dispatchset_get(dset);
+	d4 = dns_dispatchset_get(dset);
+	d5 = dns_dispatchset_get(dset);
+
+	assert_ptr_equal(d1, d5);
+	assert_ptr_not_equal(d1, d2);
+	assert_ptr_not_equal(d2, d3);
+	assert_ptr_not_equal(d3, d4);
+	assert_ptr_not_equal(d4, d5);
+
+	reset();
+}
+
+struct {
+	atomic_uint_fast32_t responses;
+	atomic_uint_fast32_t result;
+} testdata;
+
+static dns_dispatch_t *dispatch = NULL;
+static dns_dispentry_t *dispentry = NULL;
+static atomic_bool first = true;
+
+static void
+reset_testdata(void) {
+	atomic_init(&testdata.responses, 0);
+	atomic_init(&testdata.result, ISC_R_UNSET);
+}
+
+static void
+server_senddone(isc_nmhandle_t *handle, isc_result_t eresult, void *cbarg) {
+	UNUSED(handle);
+	UNUSED(eresult);
+	UNUSED(cbarg);
+
+	return;
+}
+
+static void
+nameserver(isc_nmhandle_t *handle, isc_result_t eresult, isc_region_t *region,
+	   void *cbarg) {
+	isc_region_t response;
+	static unsigned char buf1[16];
+	static unsigned char buf2[16];
+
+	UNUSED(eresult);
+	UNUSED(cbarg);
+
+	memmove(buf1, region->base, 12);
+	memset(buf1 + 12, 0, 4);
+	buf1[2] |= 0x80; /* qr=1 */
+
+	memmove(buf2, region->base, 12);
+	memset(buf2 + 12, 1, 4);
+	buf2[2] |= 0x80; /* qr=1 */
+
+	/*
+	 * send message to be discarded.
+	 */
+	response.base = buf1;
+	response.length = sizeof(buf1);
+	isc_nm_send(handle, &response, server_senddone, NULL);
+
+	/*
+	 * send nextitem message.
+	 */
+	response.base = buf2;
+	response.length = sizeof(buf2);
+	isc_nm_send(handle, &response, server_senddone, NULL);
+}
+
+static isc_result_t
+accept_cb(isc_nmhandle_t *handle, isc_result_t eresult, void *cbarg) {
+	UNUSED(handle);
+	UNUSED(cbarg);
+
+	return (eresult);
+}
+
+static void
+noop_nameserver(isc_nmhandle_t *handle, isc_result_t eresult,
+		isc_region_t *region, void *cbarg) {
+	UNUSED(handle);
+	UNUSED(eresult);
+	UNUSED(region);
+	UNUSED(cbarg);
+}
+
+static void
+response_getnext(isc_result_t result, isc_region_t *region, void *arg) {
+	UNUSED(region);
+	UNUSED(arg);
+
+	atomic_fetch_add_relaxed(&testdata.responses, 1);
+
+	if (atomic_compare_exchange_strong(&first, &(bool){ true }, false)) {
+		result = dns_dispatch_getnext(dispentry);
+		assert_int_equal(result, ISC_R_SUCCESS);
+	} else {
+		uv_sem_post(&sem);
+	}
+}
+
+static void
+response(isc_result_t eresult, isc_region_t *region, void *arg) {
+	UNUSED(region);
+	UNUSED(arg);
+
+	switch (eresult) {
+	case ISC_R_EOF:
+	case ISC_R_CANCELED:
+	case ISC_R_SHUTTINGDOWN:
+		break;
+	default:
+		atomic_fetch_add_relaxed(&testdata.responses, 1);
+		atomic_store_relaxed(&testdata.result, eresult);
+	}
+
+	uv_sem_post(&sem);
+}
+
+static void
+response_timeout(isc_result_t eresult, isc_region_t *region, void *arg) {
+	UNUSED(region);
+	UNUSED(arg);
+
+	atomic_store_relaxed(&testdata.result, eresult);
+
+	uv_sem_post(&sem);
+}
+
+static void
+connected(isc_result_t eresult, isc_region_t *region, void *cbarg) {
+	isc_region_t *r = (isc_region_t *)cbarg;
+
+	UNUSED(eresult);
+	UNUSED(region);
+
+	dns_dispatch_send(dispentry, r);
+}
+
+static void
+client_senddone(isc_result_t eresult, isc_region_t *region, void *cbarg) {
+	UNUSED(eresult);
+	UNUSED(region);
+	UNUSED(cbarg);
+
+	return;
+}
+
+static void
+timeout_connected(isc_result_t eresult, isc_region_t *region, void *cbarg) {
+	UNUSED(region);
+	UNUSED(cbarg);
+
+	atomic_store_relaxed(&testdata.result, eresult);
+
+	uv_sem_post(&sem);
+}
+
+ISC_RUN_TEST_IMPL(dispatch_timeout_tcp_connect) {
+	isc_result_t result;
+	isc_region_t region;
+	unsigned char rbuf[12] = { 0 };
+	unsigned char message[12] = { 0 };
+	uint16_t id;
+
+	UNUSED(state);
+
+	tcp_connect_addr = (isc_sockaddr_t){ .length = 0 };
+	isc_sockaddr_fromin6(&tcp_connect_addr, &in6addr_blackhole, 0);
+
+	result = dns_dispatchmgr_create(mctx, connect_nm, &dispatchmgr);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = dns_dispatch_createtcp(dispatchmgr, &tcp_connect_addr,
+					&tcp_server_addr, &dispatch);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	region.base = rbuf;
+	region.length = sizeof(rbuf);
+
+	result = dns_dispatch_add(dispatch, 0, T_CLIENT_CONNECT,
+				  &tcp_server_addr, timeout_connected,
+				  client_senddone, response, &region, &id,
+				  &dispentry);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(message, 0, sizeof(message));
+	message[0] = (id >> 8) & 0xff;
+	message[1] = id & 0xff;
+
+	region.base = message;
+	region.length = sizeof(message);
+
+	dns_dispatch_connect(dispentry);
+
+	uv_sem_wait(&sem);
+
+	dns_dispatch_done(&dispentry);
+
+	dns_dispatch_detach(&dispatch);
+	dns_dispatchmgr_detach(&dispatchmgr);
+
+	/* Skip if the IPv6 is not available or not blackholed */
+
+	result = atomic_load_acquire(&testdata.result);
+	if (result == ISC_R_ADDRNOTAVAIL || result == ISC_R_CONNREFUSED) {
+		skip();
+		return;
+	}
+
+	assert_int_equal(result, ISC_R_TIMEDOUT);
+}
+
+ISC_RUN_TEST_IMPL(dispatch_timeout_tcp_response) {
+	isc_result_t result;
+	isc_region_t region;
+	unsigned char rbuf[12] = { 0 };
+	unsigned char message[12] = { 0 };
+	uint16_t id;
+	isc_nmsocket_t *sock = NULL;
+
+	UNUSED(state);
+
+	tcp_connect_addr = (isc_sockaddr_t){ .length = 0 };
+	isc_sockaddr_fromin6(&tcp_connect_addr, &in6addr_loopback, 0);
+
+	result = dns_dispatchmgr_create(mctx, connect_nm, &dispatchmgr);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = dns_dispatch_createtcp(dispatchmgr, &tcp_connect_addr,
+					&tcp_server_addr, &dispatch);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_nm_listentcpdns(netmgr, &tcp_server_addr, noop_nameserver,
+				     NULL, accept_cb, NULL, 0, 0, NULL, &sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	region.base = rbuf;
+	region.length = sizeof(rbuf);
+
+	result = dns_dispatch_add(dispatch, 0, T_CLIENT_CONNECT,
+				  &tcp_server_addr, connected, client_senddone,
+				  response_timeout, &region, &id, &dispentry);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(message, 0, sizeof(message));
+	message[0] = (id >> 8) & 0xff;
+	message[1] = id & 0xff;
+
+	region.base = message;
+	region.length = sizeof(message);
+
+	dns_dispatch_connect(dispentry);
+
+	uv_sem_wait(&sem);
+
+	assert_int_equal(atomic_load_acquire(&testdata.result), ISC_R_TIMEDOUT);
+
+	isc_nm_stoplistening(sock);
+	isc_nmsocket_close(&sock);
+	assert_null(sock);
+
+	dns_dispatch_done(&dispentry);
+
+	dns_dispatch_detach(&dispatch);
+	dns_dispatchmgr_detach(&dispatchmgr);
+}
+
+ISC_RUN_TEST_IMPL(dispatch_tcp_response) {
+	isc_result_t result;
+	isc_region_t region;
+	unsigned char rbuf[12] = { 0 };
+	unsigned char message[12] = { 0 };
+	uint16_t id;
+	isc_nmsocket_t *sock = NULL;
+
+	UNUSED(state);
+
+	tcp_connect_addr = (isc_sockaddr_t){ .length = 0 };
+	isc_sockaddr_fromin6(&tcp_connect_addr, &in6addr_loopback, 0);
+
+	result = dns_dispatchmgr_create(mctx, connect_nm, &dispatchmgr);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = dns_dispatch_createtcp(dispatchmgr, &tcp_connect_addr,
+					&tcp_server_addr, &dispatch);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_nm_listentcpdns(netmgr, &tcp_server_addr, nameserver, NULL,
+				     accept_cb, NULL, 0, 0, NULL, &sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	region.base = rbuf;
+	region.length = sizeof(rbuf);
+
+	result = dns_dispatch_add(dispatch, 0, T_CLIENT_CONNECT,
+				  &tcp_server_addr, connected, client_senddone,
+				  response, &region, &id, &dispentry);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(message, 0, sizeof(message));
+	message[0] = (id >> 8) & 0xff;
+	message[1] = id & 0xff;
+
+	region.base = message;
+	region.length = sizeof(message);
+
+	dns_dispatch_connect(dispentry);
+
+	uv_sem_wait(&sem);
+
+	assert_in_range(atomic_load_acquire(&testdata.responses), 1, 2);
+	assert_int_equal(atomic_load_acquire(&testdata.result), ISC_R_SUCCESS);
+
+	/* Cleanup */
+
+	isc_nm_stoplistening(sock);
+	isc_nmsocket_close(&sock);
+	assert_null(sock);
+
+	dns_dispatch_done(&dispentry);
+
+	dns_dispatch_detach(&dispatch);
+	dns_dispatchmgr_detach(&dispatchmgr);
+}
+
+ISC_RUN_TEST_IMPL(dispatch_timeout_udp_response) {
+	isc_result_t result;
+	isc_region_t region;
+	unsigned char rbuf[12] = { 0 };
+	unsigned char message[12] = { 0 };
+	uint16_t id;
+	isc_nmsocket_t *sock = NULL;
+
+	UNUSED(state);
+
+	udp_connect_addr = (isc_sockaddr_t){ .length = 0 };
+	isc_sockaddr_fromin6(&udp_connect_addr, &in6addr_loopback, 0);
+
+	result = dns_dispatchmgr_create(mctx, connect_nm, &dispatchmgr);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = dns_dispatch_createudp(dispatchmgr, &tcp_connect_addr,
+					&dispatch);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_nm_listenudp(netmgr, &udp_server_addr, noop_nameserver,
+				  NULL, 0, &sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	region.base = rbuf;
+	region.length = sizeof(rbuf);
+
+	result = dns_dispatch_add(dispatch, 0, T_CLIENT_CONNECT,
+				  &udp_server_addr, connected, client_senddone,
+				  response_timeout, &region, &id, &dispentry);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(message, 0, sizeof(message));
+	message[0] = (id >> 8) & 0xff;
+	message[1] = id & 0xff;
+
+	region.base = message;
+	region.length = sizeof(message);
+
+	dns_dispatch_connect(dispentry);
+
+	uv_sem_wait(&sem);
+
+	assert_int_equal(atomic_load_acquire(&testdata.result), ISC_R_TIMEDOUT);
+
+	isc_nm_stoplistening(sock);
+	isc_nmsocket_close(&sock);
+	assert_null(sock);
+
+	dns_dispatch_done(&dispentry);
+
+	dns_dispatch_detach(&dispatch);
+	dns_dispatchmgr_detach(&dispatchmgr);
+}
+
+/* test dispatch getnext */
+ISC_RUN_TEST_IMPL(dispatch_getnext) {
+	isc_result_t result;
+	isc_region_t region;
+	isc_nmsocket_t *sock = NULL;
+	unsigned char message[12] = { 0 };
+	unsigned char rbuf[12] = { 0 };
+	uint16_t id;
+
+	UNUSED(state);
+
+	result = dns_dispatchmgr_create(mctx, connect_nm, &dispatchmgr);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = dns_dispatch_createudp(dispatchmgr, &udp_connect_addr,
+					&dispatch);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * Create a local udp nameserver on the loopback.
+	 */
+	result = isc_nm_listenudp(netmgr, &udp_server_addr, nameserver, NULL, 0,
+				  &sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	region.base = rbuf;
+	region.length = sizeof(rbuf);
+	result = dns_dispatch_add(dispatch, 0, T_CLIENT_CONNECT,
+				  &udp_server_addr, connected, client_senddone,
+				  response_getnext, &region, &id, &dispentry);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(message, 0, sizeof(message));
+	message[0] = (id >> 8) & 0xff;
+	message[1] = id & 0xff;
+
+	region.base = message;
+	region.length = sizeof(message);
+
+	dns_dispatch_connect(dispentry);
+
+	uv_sem_wait(&sem);
+
+	assert_int_equal(atomic_load_acquire(&testdata.responses), 2);
+
+	/* Cleanup */
+	isc_nm_stoplistening(sock);
+	isc_nmsocket_close(&sock);
+	assert_null(sock);
+
+	dns_dispatch_done(&dispentry);
+	dns_dispatch_detach(&dispatch);
+	dns_dispatchmgr_detach(&dispatchmgr);
+}
+
+ISC_TEST_LIST_START
+
+ISC_TEST_ENTRY_CUSTOM(dispatch_timeout_tcp_connect, _setup, _teardown)
+ISC_TEST_ENTRY_CUSTOM(dispatch_timeout_tcp_response, _setup, _teardown)
+ISC_TEST_ENTRY_CUSTOM(dispatch_tcp_response, _setup, _teardown)
+ISC_TEST_ENTRY_CUSTOM(dispatch_timeout_udp_response, _setup, _teardown)
+ISC_TEST_ENTRY_CUSTOM(dispatchset_create, _setup, _teardown)
+ISC_TEST_ENTRY_CUSTOM(dispatchset_get, _setup, _teardown)
+ISC_TEST_ENTRY_CUSTOM(dispatch_getnext, _setup, _teardown)
+
+ISC_TEST_LIST_END
+
+ISC_TEST_MAIN