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438 lines
12 KiB
C++
438 lines
12 KiB
C++
#include <ev/ev.h>
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#include <iwp/iwp.hpp>
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#include <messages/link_intro.hpp>
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#include <messages/discard.hpp>
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#include <utp/utp.hpp>
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#include <crypto/crypto_libsodium.hpp>
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#include <gtest/gtest.h>
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struct LinkLayerTest : public ::testing::Test
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{
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static constexpr uint16_t AlicePort = 5000;
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static constexpr uint16_t BobPort = 6000;
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struct Context
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{
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Context(llarp::Crypto& c)
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{
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crypto = &c;
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crypto->identity_keygen(signingKey);
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crypto->encryption_keygen(encryptionKey);
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rc.pubkey = signingKey.toPublic();
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rc.enckey = encryptionKey.toPublic();
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}
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llarp::SecretKey signingKey;
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llarp::SecretKey encryptionKey;
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llarp::RouterContact rc;
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llarp::Crypto* crypto;
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bool gotLIM = false;
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const llarp::RouterContact&
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GetRC() const
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{
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return rc;
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}
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llarp::RouterID
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GetRouterID() const
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{
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return rc.pubkey;
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}
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/// regenerate rc and rotate onion key
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bool
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Regen()
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{
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crypto->encryption_keygen(encryptionKey);
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rc.enckey = llarp::seckey_topublic(encryptionKey);
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return rc.Sign(crypto, signingKey);
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}
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std::unique_ptr< llarp::ILinkLayer > link;
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static std::string
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localLoopBack()
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{
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#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \
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|| (__APPLE__ && __MACH__)
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return "lo0";
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#else
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return "lo";
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#endif
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}
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bool
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Start(llarp::Logic* logic, llarp_ev_loop* loop, uint16_t port)
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{
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if(!link)
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return false;
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if(!link->Configure(loop, localLoopBack(), AF_INET, port))
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return false;
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if(!link->GenEphemeralKeys())
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return false;
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rc.addrs.emplace_back();
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if(!link->GetOurAddressInfo(rc.addrs[0]))
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return false;
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if(!rc.Sign(crypto, signingKey))
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return false;
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return link->Start(logic);
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}
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void
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Stop()
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{
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if(link)
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link->Stop();
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}
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void
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TearDown()
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{
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Stop();
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link.reset();
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}
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};
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llarp::sodium::CryptoLibSodium crypto;
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Context Alice;
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Context Bob;
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bool success = false;
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llarp_ev_loop* netLoop;
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std::unique_ptr< llarp::Logic > logic;
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llarp_time_t oldRCLifetime;
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LinkLayerTest() : Alice(crypto), Bob(crypto), netLoop(nullptr)
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{
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}
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void
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SetUp()
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{
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oldRCLifetime = llarp::RouterContact::Lifetime;
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llarp::RouterContact::IgnoreBogons = true;
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llarp::RouterContact::Lifetime = 500;
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llarp_ev_loop_alloc(&netLoop);
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logic.reset(new llarp::Logic());
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}
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void
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TearDown()
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{
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Alice.TearDown();
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Bob.TearDown();
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logic.reset();
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llarp_ev_loop_free(&netLoop);
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llarp::RouterContact::IgnoreBogons = false;
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llarp::RouterContact::Lifetime = oldRCLifetime;
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}
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static void
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OnTimeout(void* u, uint64_t, uint64_t left)
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{
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if(left)
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return;
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static_cast< LinkLayerTest* >(u)->Stop();
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}
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void
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RunMainloop()
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{
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logic->call_later({5000, this, &OnTimeout});
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llarp_ev_loop_run_single_process(netLoop, logic->thread, logic.get());
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}
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void
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Stop()
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{
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llarp_ev_loop_stop(netLoop);
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}
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bool
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AliceGotMessage(const llarp_buffer_t&)
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{
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success = true;
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Stop();
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return true;
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}
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};
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TEST_F(LinkLayerTest, TestUTPAliceRenegWithBob)
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{
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Alice.link = llarp::utp::NewServer(
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&crypto, Alice.encryptionKey,
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[&]() -> const llarp::RouterContact& { return Alice.GetRC(); },
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[&](llarp::ILinkSession* s, const llarp_buffer_t& buf) -> bool {
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if(Alice.gotLIM)
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{
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Alice.Regen();
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return s->RenegotiateSession();
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}
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else
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{
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llarp::LinkIntroMessage msg;
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ManagedBuffer copy{buf};
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if(!msg.BDecode(©.underlying))
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return false;
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if(!s->GotLIM(&msg))
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return false;
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Alice.gotLIM = true;
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return true;
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}
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},
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[&](llarp::ILinkSession* s) -> bool {
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const auto rc = s->GetRemoteRC();
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return rc.pubkey == Bob.GetRC().pubkey;
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},
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[&](llarp::RouterContact, llarp::RouterContact) -> bool { return true; },
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[&](llarp::Signature& sig, const llarp_buffer_t& buf) -> bool {
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return crypto.sign(sig, Alice.signingKey, buf);
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},
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[&](llarp::ILinkSession* session) {
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ASSERT_FALSE(session->IsEstablished());
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Stop();
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},
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[&](llarp::RouterID router) { ASSERT_EQ(router, Bob.GetRouterID()); });
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auto sendDiscardMessage = [](llarp::ILinkSession* s) -> bool {
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// send discard message in reply to complete unit test
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std::array< byte_t, 32 > tmp;
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llarp_buffer_t otherBuf(tmp);
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llarp::DiscardMessage discard;
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if(!discard.BEncode(&otherBuf))
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return false;
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otherBuf.sz = otherBuf.cur - otherBuf.base;
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otherBuf.cur = otherBuf.base;
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return s->SendMessageBuffer(otherBuf);
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};
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Bob.link = llarp::utp::NewServer(
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&crypto, Bob.encryptionKey,
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[&]() -> const llarp::RouterContact& { return Bob.GetRC(); },
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[&](llarp::ILinkSession* s, const llarp_buffer_t& buf) -> bool {
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llarp::LinkIntroMessage msg;
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ManagedBuffer copy{buf};
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if(!msg.BDecode(©.underlying))
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return false;
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if(!s->GotLIM(&msg))
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return false;
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Bob.gotLIM = true;
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return sendDiscardMessage(s);
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},
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[&](llarp::ILinkSession* s) -> bool {
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if(s->GetRemoteRC().pubkey != Alice.GetRC().pubkey)
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return false;
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llarp::LogInfo("bob established with alice");
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return Bob.link->VisitSessionByPubkey(Alice.GetRC().pubkey.as_array(),
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sendDiscardMessage);
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},
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[&](llarp::RouterContact newrc, llarp::RouterContact oldrc) -> bool {
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success = newrc.pubkey == oldrc.pubkey;
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return true;
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},
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[&](llarp::Signature& sig, const llarp_buffer_t& buf) -> bool {
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return crypto.sign(sig, Bob.signingKey, buf);
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},
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[&](llarp::ILinkSession* session) {
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ASSERT_FALSE(session->IsEstablished());
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},
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[&](llarp::RouterID router) { ASSERT_EQ(router, Alice.GetRouterID()); });
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ASSERT_TRUE(Alice.Start(logic.get(), netLoop, AlicePort));
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ASSERT_TRUE(Bob.Start(logic.get(), netLoop, BobPort));
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ASSERT_TRUE(Alice.link->TryEstablishTo(Bob.GetRC()));
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RunMainloop();
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ASSERT_TRUE(Bob.gotLIM);
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ASSERT_TRUE(success);
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}
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TEST_F(LinkLayerTest, TestUTPAliceConnectToBob)
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{
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Alice.link = llarp::utp::NewServer(
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&crypto, Alice.encryptionKey,
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[&]() -> const llarp::RouterContact& { return Alice.GetRC(); },
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[&](llarp::ILinkSession* s, const llarp_buffer_t& buf) -> bool {
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llarp::LinkIntroMessage lim;
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llarp_buffer_t copy(buf.base, buf.sz);
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if(lim.BDecode(©))
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{
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if(s->GotLIM(&lim))
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{
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Alice.gotLIM = true;
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return true;
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}
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return false;
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}
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return AliceGotMessage(buf);
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},
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[&](llarp::ILinkSession* s) -> bool {
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if(s->GetRemoteRC().pubkey != Bob.GetRC().pubkey)
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return false;
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llarp::LogInfo("alice established with bob");
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return true;
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},
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[&](llarp::RouterContact, llarp::RouterContact) -> bool { return true; },
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[&](llarp::Signature& sig, const llarp_buffer_t& buf) -> bool {
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return crypto.sign(sig, Alice.signingKey, buf);
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},
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[&](llarp::ILinkSession* session) {
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ASSERT_FALSE(session->IsEstablished());
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Stop();
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},
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[&](llarp::RouterID router) { ASSERT_EQ(router, Bob.GetRouterID()); });
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Bob.link = llarp::utp::NewServer(
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&crypto, Bob.encryptionKey,
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[&]() -> const llarp::RouterContact& { return Bob.GetRC(); },
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[&](llarp::ILinkSession* s, const llarp_buffer_t& buf) -> bool {
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llarp::LinkIntroMessage lim;
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llarp_buffer_t copy(buf.base, buf.sz);
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if(lim.BDecode(©))
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{
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if(s->GotLIM(&lim))
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{
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Bob.gotLIM = true;
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return true;
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}
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return false;
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}
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return true;
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},
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[&](llarp::ILinkSession* s) -> bool {
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if(s->GetRemoteRC().pubkey != Alice.GetRC().pubkey)
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return false;
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llarp::LogInfo("bob established with alice");
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logic->queue_job({s, [](void* u) {
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llarp::ILinkSession* self =
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static_cast< llarp::ILinkSession* >(u);
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std::array< byte_t, 32 > tmp;
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llarp_buffer_t otherBuf(tmp);
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llarp::DiscardMessage discard;
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if(!discard.BEncode(&otherBuf))
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return;
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otherBuf.sz = otherBuf.cur - otherBuf.base;
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otherBuf.cur = otherBuf.base;
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self->SendMessageBuffer(otherBuf);
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}});
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return true;
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},
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[&](llarp::RouterContact, llarp::RouterContact) -> bool { return true; },
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[&](llarp::Signature& sig, const llarp_buffer_t& buf) -> bool {
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return crypto.sign(sig, Bob.signingKey, buf);
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},
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[&](llarp::ILinkSession* session) {
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ASSERT_FALSE(session->IsEstablished());
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},
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[&](llarp::RouterID router) { ASSERT_EQ(router, Alice.GetRouterID()); });
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ASSERT_TRUE(Alice.Start(logic.get(), netLoop, AlicePort));
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ASSERT_TRUE(Bob.Start(logic.get(), netLoop, BobPort));
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ASSERT_TRUE(Alice.link->TryEstablishTo(Bob.GetRC()));
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RunMainloop();
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ASSERT_TRUE(Bob.gotLIM);
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ASSERT_TRUE(success);
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}
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/*
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TEST_F(LinkLayerTest, TestIWPAliceConnectToBob)
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{
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Alice.link = llarp::iwp::NewServer(
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&crypto, Alice.encryptionKey,
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[&]() -> const llarp::RouterContact& { return Alice.GetRC(); },
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[&](llarp::ILinkSession* s, const llarp_buffer_t& buf) -> bool {
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if(Alice.gotLIM)
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{
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return AliceGotMessage(buf);
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}
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else
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{
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llarp::LinkIntroMessage msg;
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ManagedBuffer copy{buf};
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if(!msg.BDecode(©.underlying))
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return false;
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if(!s->GotLIM(&msg))
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return false;
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Alice.gotLIM = true;
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return true;
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}
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},
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[&](llarp::RouterContact rc) {
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ASSERT_EQ(rc, Bob.GetRC());
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llarp::LogInfo("alice established with bob");
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},
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[&](llarp::RouterContact, llarp::RouterContact) -> bool { return true; },
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[&](llarp::Signature& sig, const llarp_buffer_t& buf) -> bool {
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return crypto.sign(sig, Alice.signingKey, buf);
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},
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[&](llarp::ILinkSession* session) {
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ASSERT_FALSE(session->IsEstablished());
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Stop();
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},
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[&](llarp::RouterID router) { ASSERT_EQ(router, Bob.GetRouterID()); });
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auto sendDiscardMessage = [](llarp::ILinkSession* s) -> bool {
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// send discard message in reply to complete unit test
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std::array< byte_t, 32 > tmp;
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llarp_buffer_t otherBuf(tmp);
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llarp::DiscardMessage discard;
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if(!discard.BEncode(&otherBuf))
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return false;
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otherBuf.sz = otherBuf.cur - otherBuf.base;
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otherBuf.cur = otherBuf.base;
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return s->SendMessageBuffer(otherBuf);
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};
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Bob.link = llarp::iwp::NewServer(
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&crypto, Bob.encryptionKey,
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[&]() -> const llarp::RouterContact& { return Bob.GetRC(); },
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[&](llarp::ILinkSession* s, const llarp_buffer_t& buf) -> bool {
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llarp::LinkIntroMessage msg;
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ManagedBuffer copy{buf};
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if(!msg.BDecode(©.underlying))
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return false;
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if(!s->GotLIM(&msg))
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return false;
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Bob.gotLIM = true;
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return true;
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},
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[&](llarp::RouterContact rc) {
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ASSERT_EQ(rc, Alice.GetRC());
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llarp::LogInfo("bob established with alice");
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Bob.link->VisitSessionByPubkey(Alice.GetRC().pubkey.as_array(),
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sendDiscardMessage);
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},
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[&](llarp::RouterContact, llarp::RouterContact) -> bool { return true; },
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[&](llarp::Signature& sig, const llarp_buffer_t& buf) -> bool {
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return crypto.sign(sig, Bob.signingKey, buf);
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},
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[&](llarp::ILinkSession* session) {
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ASSERT_FALSE(session->IsEstablished());
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},
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[&](llarp::RouterID router) { ASSERT_EQ(router, Alice.GetRouterID()); });
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ASSERT_TRUE(Alice.Start(logic.get(), netLoop, AlicePort));
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ASSERT_TRUE(Bob.Start(logic.get(), netLoop, BobPort));
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ASSERT_TRUE(Alice.link->TryEstablishTo(Bob.GetRC()));
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RunMainloop();
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ASSERT_TRUE(Alice.gotLIM);
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ASSERT_TRUE(Bob.gotLIM);
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ASSERT_TRUE(success);
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};
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*/
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