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new(libsinsp/test): add tests for net compare
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Signed-off-by: Luca Guerra <luca@guerra.sh>
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@LucaGuerra
LucaGuerra committed Aug 6, 2024
1 parent faccdc0 commit 729f534
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1 change: 1 addition & 0 deletions userspace/libsinsp/test/CMakeLists.txt
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Expand Up @@ -110,6 +110,7 @@ set(LIBSINSP_UNIT_TESTS_SOURCES
filter_op_bcontains.ut.cpp
filter_op_contains.ut.cpp
filter_op_pmatch.ut.cpp
filter_op_net_compare.ut.cpp
filter_op_numeric_compare.ut.cpp
filter_compiler.ut.cpp
filter_transformer.ut.cpp
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110 changes: 110 additions & 0 deletions userspace/libsinsp/test/filter_op_net_compare.ut.cpp
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// SPDX-License-Identifier: Apache-2.0
/*
Copyright (C) 2024 The Falco Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

#include <libsinsp/sinsp.h>
#include <gtest/gtest.h>

#include <sinsp_with_test_input.h>

TEST_F(sinsp_with_test_input, net_ipv4_compare)
{
add_default_init_thread();
open_inspector();
sinsp_evt* evt = NULL;

int64_t client_fd = 9;
add_event_advance_ts(increasing_ts(), 1, PPME_SOCKET_SOCKET_E, 3, (uint32_t) PPM_AF_INET, (uint32_t) SOCK_STREAM, (uint32_t) 0);
evt = add_event_advance_ts(increasing_ts(), 1, PPME_SOCKET_SOCKET_X, 1, client_fd);

int64_t return_value = 0;

sockaddr_in client = test_utils::fill_sockaddr_in(54321, "172.40.111.222");
sockaddr_in server = test_utils::fill_sockaddr_in(443, "142.251.111.147");

std::vector<uint8_t> server_sockaddr = test_utils::pack_sockaddr(reinterpret_cast<sockaddr*>(&server));
evt = add_event_advance_ts(increasing_ts(), 1, PPME_SOCKET_CONNECT_E, 2, client_fd, scap_const_sized_buffer{server_sockaddr.data(), server_sockaddr.size()});

std::vector<uint8_t> socktuple = test_utils::pack_socktuple(reinterpret_cast<sockaddr*>(&client), reinterpret_cast<sockaddr*>(&server));
evt = add_event_advance_ts(increasing_ts(), 1, PPME_SOCKET_CONNECT_X, 3, return_value, scap_const_sized_buffer{socktuple.data(), socktuple.size()}, client_fd);

EXPECT_TRUE(eval_filter(evt, "fd.ip == 142.251.111.147"));
EXPECT_TRUE(eval_filter(evt, "fd.sip == 142.251.111.147"));
EXPECT_TRUE(eval_filter(evt, "fd.lip == 142.251.111.147"));

EXPECT_TRUE(eval_filter(evt, "fd.rip == 172.40.111.222"));
EXPECT_TRUE(eval_filter(evt, "fd.cip == 172.40.111.222"));

EXPECT_FALSE(eval_filter(evt, "fd.ip != 142.251.111.147"));

EXPECT_TRUE(eval_filter(evt, "fd.sip != 0:0:0:0:0:0:0:1"));
EXPECT_FALSE(eval_filter(evt, "fd.sip == '0:0:0:0:0:0:0:1'"));

EXPECT_TRUE(eval_filter(evt, "fd.net == 142.0.0.0/4"));
EXPECT_TRUE(eval_filter(evt, "fd.net == 142.251.0.0/8"));
EXPECT_TRUE(eval_filter(evt, "fd.net == 142.251.111.0/16"));
EXPECT_TRUE(eval_filter(evt, "fd.net != 10.0.0.0/8"));
EXPECT_TRUE(eval_filter(evt, "fd.net != 2001:db8:abcd:0012::0/64"));

EXPECT_FALSE(eval_filter(evt, "fd.net == 10.0.0.0/8"));
EXPECT_FALSE(eval_filter(evt, "fd.net == 2001:db8:abcd:0012::0/64"));
}

TEST_F(sinsp_with_test_input, net_ipv6_compare)
{
add_default_init_thread();
open_inspector();
sinsp_evt* evt = NULL;

int64_t client_fd = 9;
add_event_advance_ts(increasing_ts(), 1, PPME_SOCKET_SOCKET_E, 3, (uint32_t) PPM_AF_INET6, (uint32_t) SOCK_DGRAM, (uint32_t) 0);
add_event_advance_ts(increasing_ts(), 1, PPME_SOCKET_SOCKET_X, 1, client_fd);

int64_t return_value = 0;

sockaddr_in6 client = test_utils::fill_sockaddr_in6(54321, "::1");
sockaddr_in6 server1 = test_utils::fill_sockaddr_in6(443, "2001:4860:4860::8888");

std::vector<uint8_t> server1_sockaddr = test_utils::pack_sockaddr(reinterpret_cast<sockaddr*>(&server1));

/* The connect enter event populates the destination ip and the destination port thanks to the `server_sockaddr` */
add_event_advance_ts(increasing_ts(), 1, PPME_SOCKET_CONNECT_E, 2, client_fd, scap_const_sized_buffer{server1_sockaddr.data(), server1_sockaddr.size()});

std::vector<uint8_t> socktuple = test_utils::pack_socktuple(reinterpret_cast<sockaddr*>(&client), reinterpret_cast<sockaddr*>(&server1));
evt = add_event_advance_ts(increasing_ts(), 1, PPME_SOCKET_CONNECT_X, 3, return_value, scap_const_sized_buffer{socktuple.data(), socktuple.size()}, client_fd);

EXPECT_TRUE(eval_filter(evt, "fd.ip == 2001:4860:4860::8888"));
EXPECT_TRUE(eval_filter(evt, "fd.sip == 2001:4860:4860::8888"));
EXPECT_TRUE(eval_filter(evt, "fd.lip == 2001:4860:4860::8888"));

EXPECT_TRUE(eval_filter(evt, "fd.rip == ::1"));
EXPECT_TRUE(eval_filter(evt, "fd.cip == ::1"));

EXPECT_FALSE(eval_filter(evt, "fd.ip != 2001:4860:4860::8888"));

EXPECT_TRUE(eval_filter(evt, "fd.sip != 127.0.0.1"));
EXPECT_FALSE(eval_filter(evt, "fd.sip == '127.0.0.1'"));

EXPECT_TRUE(eval_filter(evt, "fd.net == 2001::0/16"));
EXPECT_TRUE(eval_filter(evt, "fd.net == 2001:4860::0/32"));
EXPECT_TRUE(eval_filter(evt, "fd.net == 2001:4860:4860::8888/48"));
EXPECT_TRUE(eval_filter(evt, "fd.net != 10::0/16"));
EXPECT_TRUE(eval_filter(evt, "fd.net != 10.0.0.0/8"));

EXPECT_FALSE(eval_filter(evt, "fd.net == 10.0.0.0/8"));
EXPECT_FALSE(eval_filter(evt, "fd.net == 2001:db8:abcd:0012::0/64"));
}

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