tests: add unit test for libknot/probe

Knot.files

@@ -591,6 +591,7 @@ tests/libknot/test_edns_ecs.c
 tests/libknot/test_endian.c
 tests/libknot/test_lookup.c
 tests/libknot/test_pkt.c
+tests/libknot/test_probe.c
 tests/libknot/test_rdata.c
 tests/libknot/test_rdataset.c
 tests/libknot/test_rrset-wire.c

tests/.gitignore

@@ -73,6 +73,7 @@
 /libknot/test_endian
 /libknot/test_lookup
 /libknot/test_pkt
+/libknot/test_probe
 /libknot/test_rdata
 /libknot/test_rdataset
 /libknot/test_rrset

tests/Makefile.am

@@ -142,6 +142,7 @@ check_PROGRAMS += \
 	libknot/test_endian			\
 	libknot/test_lookup			\
 	libknot/test_pkt			\
+	libknot/test_probe			\
 	libknot/test_rdata			\
 	libknot/test_rdataset			\
 	libknot/test_rrset			\

tests/libknot/test_probe.c

+/*  Copyright (C) 2021 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 <tap/basic.h>
+#include <tap/files.h>
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
+#include "contrib/sockaddr.h"
+#include "libknot/packet/pkt.c"
+#include "libknot/probe/probe.h"
+
+int main(int argc, char *argv[])
+{
+	plan_lazy();
+
+	knot_probe_t *probe_out = knot_probe_alloc();
+	ok(probe_out != NULL, "probe: initialize output probe");
+	knot_probe_t *probe_in = knot_probe_alloc();
+	ok(probe_in != NULL, "probe: initialize input probe");
+
+	int fd = knot_probe_fd(probe_out);
+	ok(fd < 0, "probe: unavailable fd");
+
+	char *workdir = test_mkdtemp();
+	ok(workdir != NULL, "probe: create temporary workdir");
+
+	int ret = knot_probe_set_producer(probe_out, workdir, 1);
+	ok(ret == KNOT_ECONN, "probe: connect producer");
+
+	ret = knot_probe_set_consumer(probe_in, workdir, 1);
+	ok(ret == KNOT_EOK, "probe: connect consumer");
+	fd = knot_probe_fd(probe_in);
+	ok(fd >= 0, "probe: get input probe fd");
+
+	ret = knot_probe_set_producer(probe_out, workdir, 1);
+	ok(ret == KNOT_EOK, "probe: reconnect producer");
+	fd = knot_probe_fd(probe_out);
+	ok(fd >= 0, "probe: get output probe fd");
+
+	struct sockaddr_storage addr;
+	ret = sockaddr_set(&addr, AF_INET, "192.168.0.1", 53);
+	ok(ret == KNOT_EOK, "probe: set address");
+
+	knot_pkt_t *query = knot_pkt_new(NULL, KNOT_WIRE_MAX_PKTSIZE, NULL);
+	ok(query != NULL, "probe: create query");
+	knot_pkt_t *reply = knot_pkt_new(NULL, KNOT_WIRE_MAX_PKTSIZE, NULL);
+	ok(reply != NULL, "probe: create reply");
+
+	ret = knot_pkt_put_question(query, (const uint8_t *)"\x04test\x00",
+	                            KNOT_CLASS_IN, KNOT_RRTYPE_SOA);
+	ok(ret == KNOT_EOK, "probe: put query");
+
+	knot_probe_data_t data_out;
+	ret = knot_probe_data_set(&data_out, KNOT_PROBE_PROTO_UDP,
+	                          &addr, &addr, query, reply, KNOT_RCODE_NXDOMAIN);
+	ok(ret == KNOT_EOK, "probe: connect producer");
+
+	knot_pkt_free(query);
+	knot_pkt_free(reply);
+
+	ret = knot_probe_produce(probe_out, &data_out, 1);
+	ok(ret == KNOT_EOK, "probe: produce datagram");
+
+	knot_probe_data_t data_in;
+	ret = knot_probe_consume(probe_in, &data_in, 1, 20);
+	ok(ret == 1, "probe: consume datagram");
+
+	ret = memcmp(&data_in, &data_out, offsetof(knot_probe_data_t, query.qname));
+	ok(ret == 0, "probe: data comparsion");
+
+	ret = knot_dname_cmp(data_in.query.qname, data_out.query.qname);
+	ok(ret == 0, "probe: qname comparison");
+
+	knot_probe_free(probe_in);
+	knot_probe_free(probe_out);
+
+	test_rm_rf(workdir);
+	free(workdir);
+
+	return 0;
+}