mirror of
https://github.com/mfontanini/libtins
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133 lines
4.4 KiB
C++
133 lines
4.4 KiB
C++
/*
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* Copyright (c) 2017, Matias Fontanini
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sstream>
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#include "ipv4_tests.h"
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#include "tins/rawpdu.h"
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#include "tins/ethernetII.h"
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#include "tins/ip.h"
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#include "tins/udp.h"
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#include "tins/network_interface.h"
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using std::string;
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using std::ostringstream;
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using Tins::IP;
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using Tins::UDP;
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using Tins::PDU;
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using Tins::RawPDU;
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using Tins::EthernetII;
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using Tins::PacketSender;
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using Tins::NetworkInterface;
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// Source address test
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IPv4SourceAddressTest::IPv4SourceAddressTest(const PacketSenderPtr& packet_sender,
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const ConfigurationPtr& configuration)
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: ActiveTest(packet_sender, configuration) {
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}
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string IPv4SourceAddressTest::name() const {
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return "ipv4_source_address";
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}
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void IPv4SourceAddressTest::execute_test() {
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PacketSender& sender = packet_sender();
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Configuration& config = configuration();
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auto packet = IP("8.8.8.8");
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packet /= UDP(config.destination_port(), config.source_port());
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packet /= RawPDU(name());
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sender.send(packet);
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}
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void IPv4SourceAddressTest::validate_packet(const PDU& pdu) {
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const IP& ip = pdu.rfind_pdu<IP>();
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const NetworkInterface& iface = configuration().interface();
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// The source address should be the same as the default interface's
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if (iface.ipv4_address() != ip.src_addr()) {
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ostringstream oss;
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oss << "Source address should be " << iface.ipv4_address()
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<< " but is " << ip.src_addr();
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throw TestFailed(oss.str());
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}
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}
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bool IPv4SourceAddressTest::test_matches_packet(const PDU& pdu) const {
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const string& test_name = name();
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RawPDU::payload_type expected_payload(test_name.begin(), test_name.end());
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return pdu.rfind_pdu<RawPDU>().payload() == expected_payload;
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}
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// Fragmentation test
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IPv4FragmentationTest::IPv4FragmentationTest(const PacketSenderPtr& packet_sender,
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const ConfigurationPtr& configuration)
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: ActiveTest(packet_sender, configuration) {
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}
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string IPv4FragmentationTest::name() const {
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return "ipv4_fragmentation";
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}
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void IPv4FragmentationTest::execute_test() {
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PacketSender& sender = packet_sender();
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Configuration& config = configuration();
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auto packet = IP("8.8.8.8");
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packet /= UDP(config.destination_port(), config.source_port());
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packet /= RawPDU(name());
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IP& ip = packet.rfind_pdu<IP>();
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ip.fragment_offset(100);
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ip.flags(IP::MORE_FRAGMENTS);
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sender.send(packet);
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}
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void IPv4FragmentationTest::validate_packet(const PDU& pdu) {
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ostringstream oss;
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const IP& ip = pdu.rfind_pdu<IP>();
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if (ip.fragment_offset() != 100) {
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oss << "Expected fragment offset 100 but got " << ip.fragment_offset();
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throw TestFailed(oss.str());
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}
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if (ip.flags() != IP::MORE_FRAGMENTS) {
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oss << "Expected MORE_FRAGMENT flags but got " << (unsigned)ip.flags();
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throw TestFailed(oss.str());
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}
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}
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bool IPv4FragmentationTest::test_matches_packet(const PDU& pdu) const {
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string test_name = name();
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const RawPDU& raw = pdu.rfind_pdu<RawPDU>();
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string payload(raw.payload().begin(), raw.payload().end());
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return payload.find(test_name) != string::npos;
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}
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