/* Copyright (c) 2008, Arvid Norberg All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef TORRENT_DISABLE_DHT #include "libtorrent/config.hpp" #include "libtorrent/session.hpp" #include "libtorrent/kademlia/node.hpp" // for verify_message #include "libtorrent/bencode.hpp" #include "libtorrent/socket_io.hpp" // for hash_address #include "libtorrent/broadcast_socket.hpp" // for supports_ipv6 #include "libtorrent/alert_dispatcher.hpp" #include "libtorrent/performance_counters.hpp" // for counters #include "libtorrent/random.hpp" #include "libtorrent/ed25519.hpp" #include "libtorrent/kademlia/node_id.hpp" #include "libtorrent/kademlia/routing_table.hpp" #include "libtorrent/kademlia/item.hpp" #include "libtorrent/ed25519.hpp" #include #include "test.hpp" #include "setup_transfer.hpp" #ifdef TORRENT_USE_VALGRIND #include #endif #if TORRENT_USE_IOSTREAM #include #endif using namespace libtorrent; using namespace libtorrent::dht; void nop() {} sha1_hash to_hash(char const* s) { sha1_hash ret; from_hex(s, 40, (char*)&ret[0]); return ret; } void add_and_replace(libtorrent::dht::node_id& dst, libtorrent::dht::node_id const& add) { bool carry = false; for (int k = 19; k >= 0; --k) { int sum = dst[k] + add[k] + (carry?1:0); dst[k] = sum & 255; carry = sum > 255; } } void node_push_back(void* userdata, libtorrent::dht::node_entry const& n) { using namespace libtorrent::dht; std::vector* nv = (std::vector*)userdata; nv->push_back(n); } void nop(void* userdata, libtorrent::dht::node_entry const& n) {} std::list > g_sent_packets; struct mock_socket : udp_socket_interface { bool has_quota() { return true; } bool send_packet(entry& msg, udp::endpoint const& ep, int flags) { g_sent_packets.push_back(std::make_pair(ep, msg)); return true; } }; sha1_hash generate_next() { sha1_hash ret; for (int i = 0; i < 20; ++i) ret[i] = rand() & 0xff; return ret; } boost::array generate_key() { boost::array ret; for (int i = 0; i < 64; ++i) ret[i] = rand() & 0xff; return ret; } static const std::string no; std::list >::iterator find_packet(udp::endpoint ep) { return std::find_if(g_sent_packets.begin(), g_sent_packets.end() , boost::bind(&std::pair::first, _1) == ep); } void lazy_from_entry(entry const& e, lazy_entry& l) { error_code ec; static char inbuf[1500]; int len = bencode(inbuf, e); int ret = lazy_bdecode(inbuf, inbuf + len, l, ec); TEST_CHECK(ret == 0); } void send_dht_request(node_impl& node, char const* msg, udp::endpoint const& ep , lazy_entry* reply, char const* t = "10", char const* info_hash = 0 , char const* name = 0, std::string const token = std::string(), int port = 0 , char const* target = 0, entry const* value = 0 , bool scrape = false, bool seed = false , std::string const key = std::string(), std::string const sig = std::string() , int seq = -1, boost::int64_t cas = -1, sha1_hash const* nid = NULL , char const* put_salt = NULL) { // we're about to clear out the backing buffer // for this lazy_entry, so we better clear it now reply->clear(); entry e; e["q"] = msg; e["t"] = t; e["y"] = "q"; entry::dictionary_type& a = e["a"].dict(); if (nid == NULL) a["id"] = generate_next().to_string(); else a["id"] = nid->to_string(); if (info_hash) a["info_hash"] = std::string(info_hash, 20); if (name) a["n"] = name; if (!token.empty()) a["token"] = token; if (port) a["port"] = port; if (target) a["target"] = std::string(target, 20); if (value) a["v"] = *value; if (!sig.empty()) a["sig"] = sig; if (!key.empty()) a["k"] = key; if (scrape) a["scrape"] = 1; if (seed) a["seed"] = 1; if (seq >= 0) a["seq"] = seq; if (cas != -1) a["cas"] = cas; if (put_salt) a["salt"] = put_salt; char msg_buf[1500]; int size = bencode(msg_buf, e); #if defined TORRENT_DEBUG && TORRENT_USE_IOSTREAM // this yields a lot of output. too much // std::cerr << "sending: " << e << "\n"; #endif #ifdef TORRENT_USE_VALGRIND VALGRIND_CHECK_MEM_IS_DEFINED(msg_buf, size); #endif lazy_entry decoded; error_code ec; lazy_bdecode(msg_buf, msg_buf + size, decoded, ec); if (ec) fprintf(stderr, "lazy_bdecode failed: %s\n", ec.message().c_str()); dht::msg m(decoded, ep); node.incoming(m); // by now the node should have invoked the send function and put the // response in g_sent_packets std::list >::iterator i = find_packet(ep); if (i == g_sent_packets.end()) { TEST_ERROR("not response from DHT node"); return; } lazy_from_entry(i->second, *reply); g_sent_packets.erase(i); } namespace libtorrent { namespace dht { namespace detail { // defined in node.cpp void write_nodes_entry(entry& r, nodes_t const& nodes); } } } void write_peers(entry::dictionary_type& r, std::set const& peers) { entry::list_type& pe = r["values"].list(); for (std::set::const_iterator it = peers.begin() ; it != peers.end(); ++it) { std::string endpoint(18, '\0'); std::string::iterator out = endpoint.begin(); libtorrent::detail::write_endpoint(*it, out); endpoint.resize(out - endpoint.begin()); pe.push_back(entry(endpoint)); } } void send_dht_response(node_impl& node, lazy_entry const& request, udp::endpoint const& ep , nodes_t const& nodes = nodes_t() , std::string const token = std::string(), int port = 0 , std::set const& peers = std::set() , char const* target = 0, entry const* value = 0 , std::string const key = std::string(), std::string const sig = std::string() , int seq = -1, sha1_hash const* nid = NULL) { entry e; e["y"] = "r"; e["t"] = request.dict_find_string_value("t"); // e["ip"] = endpoint_to_bytes(ep); entry::dictionary_type& r = e["r"].dict(); if (nid == NULL) r["id"] = generate_next().to_string(); else r["id"] = nid->to_string(); if (!token.empty()) r["token"] = token; if (port) r["p"] = port; if (!nodes.empty()) dht::detail::write_nodes_entry(e["r"], nodes); if (!peers.empty()) write_peers(r, peers); if (value) r["v"] = *value; if (!sig.empty()) r["sig"] = sig; if (!key.empty()) r["k"] = key; if (seq >= 0) r["seq"] = seq; char msg_buf[1500]; int size = bencode(msg_buf, e); #if defined TORRENT_DEBUG && TORRENT_USE_IOSTREAM // this yields a lot of output. too much // std::cerr << "sending: " << e << "\n"; #endif #ifdef TORRENT_USE_VALGRIND VALGRIND_CHECK_MEM_IS_DEFINED(msg_buf, size); #endif lazy_entry decoded; error_code ec; lazy_bdecode(msg_buf, msg_buf + size, decoded, ec); if (ec) fprintf(stderr, "lazy_bdecode failed: %s\n", ec.message().c_str()); dht::msg m(decoded, ep); node.incoming(m); } struct announce_item { sha1_hash next; int num_peers; entry ent; sha1_hash target; void gen() { num_peers = (rand() % 5) + 1; ent["next"] = next.to_string(); ent["A"] = "a"; ent["B"] = "b"; ent["num_peers"] = num_peers; char buf[512]; char* ptr = buf; int len = bencode(ptr, ent); target = hasher(buf, len).final(); } }; void announce_immutable_items(node_impl& node, udp::endpoint const* eps , announce_item const* items, int num_items) { std::string token; for (int i = 0; i < 1000; ++i) { for (int j = 0; j < num_items; ++j) { if ((i % items[j].num_peers) == 0) continue; lazy_entry response; send_dht_request(node, "get", eps[i], &response, "10", 0 , 0, no, 0, (char const*)&items[j].target[0]); key_desc_t desc[] = { { "r", lazy_entry::dict_t, 0, key_desc_t::parse_children }, { "id", lazy_entry::string_t, 20, 0}, { "token", lazy_entry::string_t, 0, 0}, { "ip", lazy_entry::string_t, 0, key_desc_t::optional | key_desc_t::last_child}, { "y", lazy_entry::string_t, 1, 0}, }; lazy_entry const* parsed[5]; char error_string[200]; // fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); int ret = verify_message(&response, desc, parsed, 5, error_string, sizeof(error_string)); if (ret) { TEST_EQUAL(parsed[4]->string_value(), "r"); token = parsed[2]->string_value(); // fprintf(stderr, "got token: %s\n", token.c_str()); } else { fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); fprintf(stderr, " invalid get response: %s\n", error_string); TEST_ERROR(error_string); } if (parsed[3]) { address_v4::bytes_type b; memcpy(&b[0], parsed[3]->string_ptr(), b.size()); address_v4 addr(b); TEST_EQUAL(addr, eps[i].address()); } send_dht_request(node, "put", eps[i], &response, "10", 0 , 0, token, 0, (char const*)&items[j].target[0], &items[j].ent); key_desc_t desc2[] = { { "y", lazy_entry::string_t, 1, 0 } }; ret = verify_message(&response, desc2, parsed, 1, error_string, sizeof(error_string)); if (ret) { if (parsed[0]->string_value() != "r") fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); TEST_EQUAL(parsed[0]->string_value(), "r"); } else { fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); fprintf(stderr, " invalid put response: %s\n", error_string); TEST_ERROR(error_string); } } } std::set items_num; for (int j = 0; j < num_items; ++j) { lazy_entry response; send_dht_request(node, "get", eps[j], &response, "10", 0 , 0, no, 0, (char const*)&items[j].target[0]); key_desc_t desc[] = { { "r", lazy_entry::dict_t, 0, key_desc_t::parse_children }, { "v", lazy_entry::dict_t, 0, 0}, { "id", lazy_entry::string_t, 20, key_desc_t::last_child}, { "y", lazy_entry::string_t, 1, 0}, }; lazy_entry const* parsed[4]; char error_string[200]; int ret = verify_message(&response, desc, parsed, 4, error_string, sizeof(error_string)); if (ret) { items_num.insert(items_num.begin(), j); } } TEST_EQUAL(items_num.size(), 4); // items_num should contain 1,2 and 3 // #error this doesn't quite hold // TEST_CHECK(items_num.find(1) != items_num.end()); // TEST_CHECK(items_num.find(2) != items_num.end()); // TEST_CHECK(items_num.find(3) != items_num.end()); } struct print_alert : alert_dispatcher { virtual bool post_alert(alert* a) { fprintf(stderr, "ALERT: %s\n", a->message().c_str()); delete a; return true; } }; int sum_distance_exp(int s, node_entry const& e, node_id const& ref) { return s + distance_exp(e.id, ref); } std::vector g_got_peers; void get_peers_cb(std::vector const& peers) { g_got_peers.insert(g_got_peers.end(), peers.begin(), peers.end()); } std::vector g_got_items; dht::item g_put_item; int g_put_count; bool get_item_cb(dht::item& i) { if (!i.empty()) g_got_items.push_back(i); if (!g_put_item.empty()) { i = g_put_item; g_put_count++; return true; } return false; } // TODO: 3 test obfuscated_get_peers int test_main() { dht_settings sett; sett.max_torrents = 4; sett.max_dht_items = 4; sett.enforce_node_id = false; address ext = address::from_string("236.0.0.1"); mock_socket s; print_alert ad; counters cnt; dht::node_impl node(&ad, &s, sett, node_id(0), ext, 0, cnt); // DHT should be running on port 48199 now lazy_entry response; lazy_entry const* parsed[11]; char error_string[200]; bool ret; // ====== ping ====== udp::endpoint source(address::from_string("10.0.0.1"), 20); send_dht_request(node, "ping", source, &response, "10"); dht::key_desc_t pong_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"t", lazy_entry::string_t, 2, 0}, {"r", lazy_entry::dict_t, 0, key_desc_t::parse_children}, {"id", lazy_entry::string_t, 20, key_desc_t::last_child}, }; fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); ret = dht::verify_message(&response, pong_desc, parsed, 4, error_string, sizeof(error_string)); TEST_CHECK(ret); if (ret) { TEST_CHECK(parsed[0]->string_value() == "r"); TEST_CHECK(parsed[1]->string_value() == "10"); } else { fprintf(stderr, " invalid ping response: %s\n", error_string); } // ====== invalid message ====== send_dht_request(node, "find_node", source, &response, "10"); dht::key_desc_t err_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"e", lazy_entry::list_t, 2, 0} }; fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); ret = dht::verify_message(&response, err_desc, parsed, 2, error_string, sizeof(error_string)); TEST_CHECK(ret); if (ret) { TEST_CHECK(parsed[0]->string_value() == "e"); if (parsed[1]->list_at(0)->type() == lazy_entry::int_t && parsed[1]->list_at(1)->type() == lazy_entry::string_t) { TEST_CHECK(parsed[1]->list_at(1)->string_value() == "missing 'target' key"); } else { TEST_ERROR("invalid error response"); } } else { fprintf(stderr, " invalid error response: %s\n", error_string); } // ====== get_peers ====== send_dht_request(node, "get_peers", source, &response, "10", "01010101010101010101"); dht::key_desc_t peer1_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"r", lazy_entry::dict_t, 0, key_desc_t::parse_children}, {"token", lazy_entry::string_t, 0, 0}, {"id", lazy_entry::string_t, 20, key_desc_t::last_child}, }; std::string token; fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); ret = dht::verify_message(&response, peer1_desc, parsed, 4, error_string, sizeof(error_string)); TEST_CHECK(ret); if (ret) { TEST_CHECK(parsed[0]->string_value() == "r"); token = parsed[2]->string_value(); // fprintf(stderr, "got token: %s\n", token.c_str()); } else { fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); fprintf(stderr, " invalid get_peers response: %s\n", error_string); } // ====== announce ====== send_dht_request(node, "announce_peer", source, &response, "10", "01010101010101010101", "test", token, 8080); dht::key_desc_t ann_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"r", lazy_entry::dict_t, 0, key_desc_t::parse_children}, {"id", lazy_entry::string_t, 20, key_desc_t::last_child}, }; fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); ret = dht::verify_message(&response, ann_desc, parsed, 3, error_string, sizeof(error_string)); TEST_CHECK(ret); if (ret) { TEST_CHECK(parsed[0]->string_value() == "r"); } else { fprintf(stderr, " invalid announce response: %s\n", error_string); } // announce from 100 random IPs and make sure scrape works // 50 downloaders and 50 seeds for (int i = 0; i < 100; ++i) { source = udp::endpoint(rand_v4(), 6000); send_dht_request(node, "get_peers", source, &response, "10", "01010101010101010101"); ret = dht::verify_message(&response, peer1_desc, parsed, 4, error_string, sizeof(error_string)); if (ret) { TEST_CHECK(parsed[0]->string_value() == "r"); token = parsed[2]->string_value(); // fprintf(stderr, "got token: %s\n", token.c_str()); } else { fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); fprintf(stderr, " invalid get_peers response: %s\n", error_string); } response.clear(); send_dht_request(node, "announce_peer", source, &response, "10", "01010101010101010101" , "test", token, 8080, 0, 0, false, i >= 50); response.clear(); } // ====== get_peers ====== send_dht_request(node, "get_peers", source, &response, "10", "01010101010101010101" , 0, no, 0, 0, 0, true); dht::key_desc_t peer2_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"r", lazy_entry::dict_t, 0, key_desc_t::parse_children}, {"BFpe", lazy_entry::string_t, 256, 0}, {"BFse", lazy_entry::string_t, 256, 0}, {"id", lazy_entry::string_t, 20, key_desc_t::last_child}, }; fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); ret = dht::verify_message(&response, peer2_desc, parsed, 5, error_string, sizeof(error_string)); TEST_CHECK(ret); if (ret) { TEST_CHECK(parsed[0]->string_value() == "r"); TEST_EQUAL(parsed[1]->dict_find_string_value("n"), "test"); bloom_filter<256> downloaders; bloom_filter<256> seeds; downloaders.from_string(parsed[2]->string_ptr()); seeds.from_string(parsed[3]->string_ptr()); fprintf(stderr, "seeds: %f\n", seeds.size()); fprintf(stderr, "downloaders: %f\n", downloaders.size()); TEST_CHECK(fabs(seeds.size() - 50.f) <= 3.f); TEST_CHECK(fabs(downloaders.size() - 50.f) <= 3.f); } else { fprintf(stderr, " invalid get_peers response: %s\n", error_string); } // ====== test node ID enforcement ====== // enable node_id enforcement sett.enforce_node_id = true; // this is one of the test vectors from: // http://libtorrent.org/dht_sec.html source = udp::endpoint(address::from_string("124.31.75.21"), 1); node_id nid = to_hash("5fbfbff10c5d6a4ec8a88e4c6ab4c28b95eee401"); send_dht_request(node, "find_node", source, &response, "10", 0, 0, std::string() , 0, "0101010101010101010101010101010101010101", 0, false, false, std::string(), std::string(), -1, 0, &nid); dht::key_desc_t nodes_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"r", lazy_entry::dict_t, 0, key_desc_t::parse_children}, {"id", lazy_entry::string_t, 20, key_desc_t::last_child}, }; fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); ret = dht::verify_message(&response, nodes_desc, parsed, 3, error_string, sizeof(error_string)); TEST_CHECK(ret); if (ret) { TEST_CHECK(parsed[0]->string_value() == "r"); } else { fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); fprintf(stderr, " invalid error response: %s\n", error_string); } // verify that we reject invalid node IDs // this is now an invalid node-id for 'source' nid[0] = 0x18; send_dht_request(node, "find_node", source, &response, "10", 0, 0, std::string() , 0, "0101010101010101010101010101010101010101", 0, false, false, std::string(), std::string(), -1, 0, &nid); ret = dht::verify_message(&response, err_desc, parsed, 2, error_string, sizeof(error_string)); TEST_CHECK(ret); if (ret) { TEST_CHECK(parsed[0]->string_value() == "e"); if (parsed[1]->list_at(0)->type() == lazy_entry::int_t && parsed[1]->list_at(1)->type() == lazy_entry::string_t) { TEST_CHECK(parsed[1]->list_at(1)->string_value() == "invalid node ID"); } else { fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); TEST_ERROR("invalid error response"); } } else { fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); fprintf(stderr, " invalid error response: %s\n", error_string); } sett.enforce_node_id = false; // =========================== bloom_filter<256> test; for (int i = 0; i < 256; ++i) { char adr[50]; snprintf(adr, 50, "192.0.2.%d", i); address a = address::from_string(adr); sha1_hash iphash; hash_address(a, iphash); test.set(iphash); } if (supports_ipv6()) { for (int i = 0; i < 0x3E8; ++i) { char adr[50]; snprintf(adr, 50, "2001:db8::%x", i); address a = address::from_string(adr); sha1_hash iphash; hash_address(a, iphash); test.set(iphash); } } // these are test vectors from BEP 33 // http://www.bittorrent.org/beps/bep_0033.html fprintf(stderr, "test.size: %f\n", test.size()); fprintf(stderr, "%s\n", to_hex(test.to_string()).c_str()); if (supports_ipv6()) { TEST_CHECK(fabs(test.size() - 1224.93f) < 0.001); TEST_CHECK(to_hex(test.to_string()) == "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"); } else { TEST_CHECK(fabs(test.size() - 257.854f) < 0.001); TEST_CHECK(to_hex(test.to_string()) == "24c0004020043000102012743e00480037110820422110008000c0e302854835a05401a4045021302a306c060001881002d8a0a3a8001901b40a800900310008d2108110c2496a0028700010d804188b01415200082004088026411104a804048002002000080680828c400080cc40020c042c0494447280928041402104080d4240040414a41f0205654800b0811830d2020042b002c5800004a71d0204804a0028120a004c10017801490b834004044106005421000c86900a0020500203510060144e900100924a1018141a028012913f0041802250042280481200002004430804210101c08111c10801001080002038008211004266848606b035001048"); } response.clear(); // ====== put ====== udp::endpoint eps[1000]; for (int i = 0; i < 1000; ++i) eps[i] = udp::endpoint(rand_v4(), (rand() % 16534) + 1); announce_item items[] = { { generate_next(), 1 }, { generate_next(), 2 }, { generate_next(), 3 }, { generate_next(), 4 }, { generate_next(), 5 }, { generate_next(), 6 }, { generate_next(), 7 }, { generate_next(), 8 } }; for (int i = 0; i < sizeof(items)/sizeof(items[0]); ++i) items[i].gen(); announce_immutable_items(node, eps, items, sizeof(items)/sizeof(items[0])); key_desc_t desc2[] = { { "y", lazy_entry::string_t, 1, 0 } }; key_desc_t desc_error[] = { { "e", lazy_entry::list_t, 2, 0 }, { "y", lazy_entry::string_t, 1, 0}, }; // ==== get / put mutable items === std::pair itemv; std::pair empty_salt; empty_salt.first = NULL; empty_salt.second = 0; char signature[item_sig_len]; char buffer[1200]; int seq = 4; char private_key[item_sk_len]; char public_key[item_pk_len]; for (int with_salt = 0; with_salt < 2; ++with_salt) { seq = 4; fprintf(stderr, "\nTEST GET/PUT%s \ngenerating ed25519 keys\n\n" , with_salt ? " with-salt" : " no-salt"); unsigned char seed[32]; ed25519_create_seed(seed); ed25519_create_keypair((unsigned char*)public_key, (unsigned char*)private_key, seed); fprintf(stderr, "pub: %s priv: %s\n" , to_hex(std::string(public_key, item_pk_len)).c_str() , to_hex(std::string(private_key, item_sk_len)).c_str()); TEST_CHECK(ret); std::pair salt(NULL, 0); if (with_salt) salt = std::pair("foobar", 6); hasher h(public_key, 32); if (with_salt) h.update(salt.first, salt.second); sha1_hash target_id = h.final(); fprintf(stderr, "target_id: %s\n" , to_hex(target_id.to_string()).c_str()); send_dht_request(node, "get", source, &response, "10", 0 , 0, no, 0, (char*)&target_id[0] , 0, false, false, std::string(), std::string(), 64); key_desc_t desc[] = { { "r", lazy_entry::dict_t, 0, key_desc_t::parse_children }, { "id", lazy_entry::string_t, 20, 0}, { "token", lazy_entry::string_t, 0, 0}, { "ip", lazy_entry::string_t, 0, key_desc_t::optional | key_desc_t::last_child}, { "y", lazy_entry::string_t, 1, 0}, }; ret = verify_message(&response, desc, parsed, 5, error_string, sizeof(error_string)); if (ret) { TEST_EQUAL(parsed[4]->string_value(), "r"); token = parsed[2]->string_value(); fprintf(stderr, "get response: %s\n" , print_entry(response).c_str()); fprintf(stderr, "got token: %s\n", to_hex(token).c_str()); } else { fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); fprintf(stderr, " invalid get response: %s\n%s\n" , error_string, print_entry(response).c_str()); TEST_ERROR(error_string); } itemv = std::pair(buffer, bencode(buffer, items[0].ent)); sign_mutable_item(itemv, salt, seq, public_key, private_key, signature); TEST_EQUAL(verify_mutable_item(itemv, salt, seq, public_key, signature), true); #ifdef TORRENT_USE_VALGRIND VALGRIND_CHECK_MEM_IS_DEFINED(signature, item_sig_len); #endif send_dht_request(node, "put", source, &response, "10", 0 , 0, token, 0, 0, &items[0].ent, false, false , std::string(public_key, item_pk_len) , std::string(signature, item_sig_len), seq, -1, NULL, salt.first); ret = verify_message(&response, desc2, parsed, 1, error_string, sizeof(error_string)); if (ret) { fprintf(stderr, "put response: %s\n" , print_entry(response).c_str()); TEST_EQUAL(parsed[0]->string_value(), "r"); } else { fprintf(stderr, " invalid put response: %s\n%s\n" , error_string, print_entry(response).c_str()); TEST_ERROR(error_string); } send_dht_request(node, "get", source, &response, "10", 0 , 0, no, 0, (char*)&target_id[0] , 0, false, false, std::string(), std::string(), 64); fprintf(stderr, "target_id: %s\n" , to_hex(target_id.to_string()).c_str()); key_desc_t desc3[] = { { "r", lazy_entry::dict_t, 0, key_desc_t::parse_children }, { "id", lazy_entry::string_t, 20, 0}, { "v", lazy_entry::none_t, 0, 0}, { "seq", lazy_entry::int_t, 0, 0}, { "sig", lazy_entry::string_t, 0, 0}, { "ip", lazy_entry::string_t, 0, key_desc_t::optional | key_desc_t::last_child}, { "y", lazy_entry::string_t, 1, 0}, }; ret = verify_message(&response, desc3, parsed, 7, error_string, sizeof(error_string)); if (ret == 0) { fprintf(stderr, "msg: %s\n", print_entry(response).c_str()); fprintf(stderr, " invalid get response: %s\n%s\n" , error_string, print_entry(response).c_str()); TEST_ERROR(error_string); } else { fprintf(stderr, "get response: %s\n" , print_entry(response).c_str()); char value[1020]; char* ptr = value; int value_len = bencode(ptr, items[0].ent); TEST_EQUAL(value_len, parsed[2]->data_section().second); TEST_CHECK(memcmp(parsed[2]->data_section().first, value, value_len) == 0); TEST_EQUAL(seq, parsed[3]->int_value()); } // also test that invalid signatures fail! itemv.second = bencode(buffer, items[0].ent); sign_mutable_item(itemv, salt, seq, public_key, private_key, signature); TEST_EQUAL(verify_mutable_item(itemv, salt, seq, public_key, signature), 1); #ifdef TORRENT_USE_VALGRIND VALGRIND_CHECK_MEM_IS_DEFINED(signature, item_sig_len); #endif // break the signature signature[2] ^= 0xaa; fprintf(stderr, "PUT broken signature\n"); TEST_CHECK(verify_mutable_item(itemv, salt, seq, public_key, signature) != 1); send_dht_request(node, "put", source, &response, "10", 0 , 0, token, 0, 0, &items[0].ent, false, false , std::string(public_key, item_pk_len) , std::string(signature, item_sig_len), seq, -1, NULL, salt.first); ret = verify_message(&response, desc_error, parsed, 2, error_string, sizeof(error_string)); if (ret) { fprintf(stderr, "put response: %s\n", print_entry(response).c_str()); TEST_EQUAL(parsed[1]->string_value(), "e"); // 206 is the code for invalid signature TEST_EQUAL(parsed[0]->list_int_value_at(0), 206); } else { fprintf(stderr, " invalid put response: %s\n%s\n" , error_string, print_entry(response).c_str()); TEST_ERROR(error_string); } // === test CAS put === // this is the sequence number we expect to be there boost::uint64_t cas = seq; // increment sequence number ++seq; // put item 1 itemv.second = bencode(buffer, items[1].ent); sign_mutable_item(itemv, salt, seq, public_key, private_key, signature); TEST_EQUAL(verify_mutable_item(itemv, salt, seq, public_key, signature), 1); #ifdef TORRENT_USE_VALGRIND VALGRIND_CHECK_MEM_IS_DEFINED(signature, item_sig_len); #endif TEST_CHECK(item_target_id(salt, public_key) == target_id); fprintf(stderr, "PUT CAS 1\n"); send_dht_request(node, "put", source, &response, "10", 0 , 0, token, 0, 0, &items[1].ent, false, false , std::string(public_key, item_pk_len) , std::string(signature, item_sig_len), seq , cas, NULL, salt.first); ret = verify_message(&response, desc2, parsed, 1, error_string, sizeof(error_string)); if (ret) { fprintf(stderr, "put response: %s\n" , print_entry(response).c_str()); TEST_EQUAL(parsed[0]->string_value(), "r"); } else { fprintf(stderr, " invalid put response: %s\n%s\n" , error_string, print_entry(response).c_str()); TEST_ERROR(error_string); } fprintf(stderr, "PUT CAS 2\n"); // put the same message again. This should fail because the // CAS hash is outdated, it's not the hash of the value that's // stored anymore send_dht_request(node, "put", source, &response, "10", 0 , 0, token, 0, 0, &items[1].ent, false, false , std::string(public_key, item_pk_len) , std::string(signature, item_sig_len), seq , cas, NULL, salt.first); ret = verify_message(&response, desc_error, parsed, 2, error_string, sizeof(error_string)); if (ret) { fprintf(stderr, "put response: %s\n" , print_entry(response).c_str()); TEST_EQUAL(parsed[1]->string_value(), "e"); // 301 is the error code for CAS hash mismatch TEST_EQUAL(parsed[0]->list_int_value_at(0), 301); } else { fprintf(stderr, " invalid put response: %s\n%s\nExpected failure 301 (CAS hash mismatch)\n" , error_string, print_entry(response).c_str()); TEST_ERROR(error_string); } } // test routing table { sett.extended_routing_table = false; node_id id = to_hash("1234876923549721020394873245098347598635"); node_id diff = to_hash("15764f7459456a9453f8719b09547c11d5f34061"); routing_table tbl(id, 8, sett); // insert 256 nodes evenly distributed across the ID space. // we expect to fill the top 5 buckets for (int i = 0; i < 256; ++i) { // test a node with the same IP:port changing ID add_and_replace(id, diff); id[0] = i; tbl.node_seen(id, rand_udp_ep(), 20 + (id[19] & 0xff)); } printf("num_active_buckets: %d\n", tbl.num_active_buckets()); TEST_EQUAL(tbl.num_active_buckets(), 6); #if defined TORRENT_DHT_VERBOSE_LOGGING || defined TORRENT_DEBUG tbl.print_state(std::cerr); #endif } { sett.extended_routing_table = true; node_id id = to_hash("1234876923549721020394873245098347598635"); node_id diff = to_hash("15764f7459456a9453f8719b09547c11d5f34061"); routing_table tbl(id, 8, sett); for (int i = 0; i < 256; ++i) { add_and_replace(id, diff); id[0] = i; tbl.node_seen(id, rand_udp_ep(), 20 + (id[19] & 0xff)); } TEST_EQUAL(tbl.num_active_buckets(), 6); #if defined TORRENT_DHT_VERBOSE_LOGGING || defined TORRENT_DEBUG tbl.print_state(std::cerr); #endif } // test verify_message const static key_desc_t msg_desc[] = { {"A", lazy_entry::string_t, 4, 0}, {"B", lazy_entry::dict_t, 0, key_desc_t::optional | key_desc_t::parse_children}, {"B1", lazy_entry::string_t, 0, 0}, {"B2", lazy_entry::string_t, 0, key_desc_t::last_child}, {"C", lazy_entry::dict_t, 0, key_desc_t::optional | key_desc_t::parse_children}, {"C1", lazy_entry::string_t, 0, 0}, {"C2", lazy_entry::string_t, 0, key_desc_t::last_child}, }; lazy_entry const* msg_keys[7]; lazy_entry ent; error_code ec; char const test_msg[] = "d1:A4:test1:Bd2:B15:test22:B25:test3ee"; lazy_bdecode(test_msg, test_msg + sizeof(test_msg)-1, ent, ec); fprintf(stderr, "%s\n", print_entry(ent).c_str()); ret = verify_message(&ent, msg_desc, msg_keys, 7, error_string, sizeof(error_string)); TEST_CHECK(ret); TEST_CHECK(msg_keys[0]); if (msg_keys[0]) TEST_EQUAL(msg_keys[0]->string_value(), "test"); TEST_CHECK(msg_keys[1]); TEST_CHECK(msg_keys[2]); if (msg_keys[2]) TEST_EQUAL(msg_keys[2]->string_value(), "test2"); TEST_CHECK(msg_keys[3]); if (msg_keys[3]) TEST_EQUAL(msg_keys[3]->string_value(), "test3"); TEST_CHECK(msg_keys[4] == 0); TEST_CHECK(msg_keys[5] == 0); TEST_CHECK(msg_keys[6] == 0); char const test_msg2[] = "d1:A4:test1:Cd2:C15:test22:C25:test3ee"; lazy_bdecode(test_msg2, test_msg2 + sizeof(test_msg2)-1, ent, ec); fprintf(stderr, "%s\n", print_entry(ent).c_str()); ret = verify_message(&ent, msg_desc, msg_keys, 7, error_string, sizeof(error_string)); TEST_CHECK(ret); TEST_CHECK(msg_keys[0]); if (msg_keys[0]) TEST_EQUAL(msg_keys[0]->string_value(), "test"); TEST_CHECK(msg_keys[1] == 0); TEST_CHECK(msg_keys[2] == 0); TEST_CHECK(msg_keys[3] == 0); TEST_CHECK(msg_keys[4]); TEST_CHECK(msg_keys[5]); if (msg_keys[5]) TEST_EQUAL(msg_keys[5]->string_value(), "test2"); TEST_CHECK(msg_keys[6]); if (msg_keys[6]) TEST_EQUAL(msg_keys[6]->string_value(), "test3"); char const test_msg3[] = "d1:Cd2:C15:test22:C25:test3ee"; lazy_bdecode(test_msg3, test_msg3 + sizeof(test_msg3)-1, ent, ec); fprintf(stderr, "%s\n", print_entry(ent).c_str()); ret = verify_message(&ent, msg_desc, msg_keys, 7, error_string, sizeof(error_string)); TEST_CHECK(!ret); fprintf(stderr, "%s\n", error_string); TEST_EQUAL(error_string, std::string("missing 'A' key")); char const test_msg4[] = "d1:A6:foobare"; lazy_bdecode(test_msg4, test_msg4 + sizeof(test_msg4)-1, ent, ec); fprintf(stderr, "%s\n", print_entry(ent).c_str()); ret = verify_message(&ent, msg_desc, msg_keys, 7, error_string, sizeof(error_string)); TEST_CHECK(!ret); fprintf(stderr, "%s\n", error_string); TEST_EQUAL(error_string, std::string("invalid value for 'A'")); char const test_msg5[] = "d1:A4:test1:Cd2:C15:test2ee"; lazy_bdecode(test_msg5, test_msg5 + sizeof(test_msg5)-1, ent, ec); fprintf(stderr, "%s\n", print_entry(ent).c_str()); ret = verify_message(&ent, msg_desc, msg_keys, 7, error_string, sizeof(error_string)); TEST_CHECK(!ret); fprintf(stderr, "%s\n", error_string); TEST_EQUAL(error_string, std::string("missing 'C2' key")); // test empty strings [ { "":1 }, "" ] char const test_msg6[] = "ld0:i1ee0:e"; lazy_bdecode(test_msg6, test_msg6 + sizeof(test_msg6)-1, ent, ec); fprintf(stderr, "%s\n", print_entry(ent).c_str()); TEST_CHECK(ent.type() == lazy_entry::list_t); if (ent.type() == lazy_entry::list_t) { TEST_CHECK(ent.list_size() == 2); if (ent.list_size() == 2) { TEST_CHECK(ent.list_at(0)->dict_find_int_value("") == 1); TEST_CHECK(ent.list_at(1)->string_value() == ""); } } // test node-id functions using namespace libtorrent::dht; TEST_EQUAL(generate_prefix_mask(1), to_hash("8000000000000000000000000000000000000000")); TEST_EQUAL(generate_prefix_mask(2), to_hash("c000000000000000000000000000000000000000")); TEST_EQUAL(generate_prefix_mask(11), to_hash("ffe0000000000000000000000000000000000000")); TEST_EQUAL(generate_prefix_mask(17), to_hash("ffff800000000000000000000000000000000000")); // test kademlia functions // this is a bit too expensive to do under valgrind #ifndef TORRENT_USE_VALGRIND for (int i = 0; i < 160; i += 8) { for (int j = 0; j < 160; j += 8) { node_id a(0); a[(159-i) / 8] = 1 << (i & 7); node_id b(0); b[(159-j) / 8] = 1 << (j & 7); int dist = distance_exp(a, b); TEST_CHECK(dist >= 0 && dist < 160); TEST_CHECK(dist == ((i == j)?0:(std::max)(i, j))); for (int k = 0; k < 160; k += 8) { node_id c(0); c[(159-k) / 8] = 1 << (k & 7); bool cmp = compare_ref(a, b, c); TEST_CHECK(cmp == (distance(a, c) < distance(b, c))); } } } #endif { // test kademlia routing table dht_settings s; s.extended_routing_table = false; // s.restrict_routing_ips = false; node_id id = to_hash("3123456789abcdef01232456789abcdef0123456"); const int bucket_size = 10; dht::routing_table table(id, bucket_size, s); std::vector nodes; TEST_EQUAL(table.size().get<0>(), 0); node_id tmp = id; node_id diff = to_hash("15764f7459456a9453f8719b09547c11d5f34061"); // test a node with the same IP:port changing ID add_and_replace(tmp, diff); table.node_seen(tmp, udp::endpoint(address::from_string("4.4.4.4"), 4), 10); table.find_node(id, nodes, 0, 10); TEST_EQUAL(table.bucket_size(0), 1); TEST_EQUAL(table.size().get<0>(), 1); TEST_EQUAL(nodes.size(), 1); if (!nodes.empty()) { TEST_EQUAL(nodes[0].id, tmp); TEST_EQUAL(nodes[0].addr(), address_v4::from_string("4.4.4.4")); TEST_EQUAL(nodes[0].port(), 4); TEST_EQUAL(nodes[0].timeout_count, 0); } // set timeout_count to 1 table.node_failed(tmp, udp::endpoint(address_v4::from_string("4.4.4.4"), 4)); nodes.clear(); table.for_each_node(node_push_back, nop, &nodes); TEST_EQUAL(nodes.size(), 1); if (!nodes.empty()) { TEST_EQUAL(nodes[0].id, tmp); TEST_EQUAL(nodes[0].addr(), address_v4::from_string("4.4.4.4")); TEST_EQUAL(nodes[0].port(), 4); TEST_EQUAL(nodes[0].timeout_count, 1); } // add the exact same node again, it should set the timeout_count to 0 table.node_seen(tmp, udp::endpoint(address::from_string("4.4.4.4"), 4), 10); nodes.clear(); table.for_each_node(node_push_back, nop, &nodes); TEST_EQUAL(nodes.size(), 1); if (!nodes.empty()) { TEST_EQUAL(nodes[0].id, tmp); TEST_EQUAL(nodes[0].addr(), address_v4::from_string("4.4.4.4")); TEST_EQUAL(nodes[0].port(), 4); TEST_EQUAL(nodes[0].timeout_count, 0); } // test adding the same IP:port again with a new node ID (should replace the old one) add_and_replace(tmp, diff); table.node_seen(tmp, udp::endpoint(address::from_string("4.4.4.4"), 4), 10); table.find_node(id, nodes, 0, 10); TEST_EQUAL(table.bucket_size(0), 1); TEST_EQUAL(nodes.size(), 1); if (!nodes.empty()) { TEST_EQUAL(nodes[0].id, tmp); TEST_EQUAL(nodes[0].addr(), address_v4::from_string("4.4.4.4")); TEST_EQUAL(nodes[0].port(), 4); } // test adding the same node ID again with a different IP (should be ignored) table.node_seen(tmp, udp::endpoint(address::from_string("4.4.4.4"), 5), 10); table.find_node(id, nodes, 0, 10); TEST_EQUAL(table.bucket_size(0), 1); if (!nodes.empty()) { TEST_EQUAL(nodes[0].id, tmp); TEST_EQUAL(nodes[0].addr(), address_v4::from_string("4.4.4.4")); TEST_EQUAL(nodes[0].port(), 4); } // test adding a node that ends up in the same bucket with an IP // very close to the current one (should be ignored) // if restrict_routing_ips == true table.node_seen(tmp, udp::endpoint(address::from_string("4.4.4.5"), 5), 10); table.find_node(id, nodes, 0, 10); TEST_EQUAL(table.bucket_size(0), 1); if (!nodes.empty()) { TEST_EQUAL(nodes[0].id, tmp); TEST_EQUAL(nodes[0].addr(), address_v4::from_string("4.4.4.4")); TEST_EQUAL(nodes[0].port(), 4); } s.restrict_routing_ips = false; add_and_replace(tmp, diff); table.node_seen(id, udp::endpoint(rand_v4(), rand()), 10); nodes.clear(); for (int i = 0; i < 7000; ++i) { table.node_seen(tmp, udp::endpoint(rand_v4(), rand()), 20 + (tmp[19] & 0xff)); add_and_replace(tmp, diff); } printf("active buckets: %d\n", table.num_active_buckets()); TEST_EQUAL(table.num_active_buckets(), 10); TEST_CHECK(table.size().get<0>() >= 10 * 10); //#error test num_global_nodes //#error test need_refresh #if defined TORRENT_DHT_VERBOSE_LOGGING || defined TORRENT_DEBUG table.print_state(std::cerr); #endif table.for_each_node(node_push_back, nop, &nodes); printf("nodes: %d\n", int(nodes.size())); std::vector temp; std::generate(tmp.begin(), tmp.end(), random_byte); table.find_node(tmp, temp, 0, nodes.size() * 2); printf("returned-all: %d\n", int(temp.size())); TEST_EQUAL(temp.size(), nodes.size()); // This makes sure enough of the nodes returned are actually // part of the closest nodes std::set duplicates; #ifdef TORRENT_USE_VALGRIND const int reps = 3; #else const int reps = 50; #endif for (int r = 0; r < reps; ++r) { std::generate(tmp.begin(), tmp.end(), random_byte); table.find_node(tmp, temp, 0, bucket_size * 2); printf("returned: %d\n", int(temp.size())); TEST_EQUAL(int(temp.size()), (std::min)(bucket_size * 2, int(nodes.size()))); std::sort(nodes.begin(), nodes.end(), boost::bind(&compare_ref , boost::bind(&node_entry::id, _1) , boost::bind(&node_entry::id, _2), tmp)); int expected = std::accumulate(nodes.begin(), nodes.begin() + (bucket_size * 2) , 0, boost::bind(&sum_distance_exp, _1, _2, tmp)); int sum_hits = std::accumulate(temp.begin(), temp.end() , 0, boost::bind(&sum_distance_exp, _1, _2, tmp)); TEST_EQUAL(bucket_size * 2, int(temp.size())); printf("expected: %d actual: %d\n", expected, sum_hits); TEST_EQUAL(expected, sum_hits); duplicates.clear(); // This makes sure enough of the nodes returned are actually // part of the closest nodes for (std::vector::iterator i = temp.begin() , end(temp.end()); i != end; ++i) { TEST_CHECK(duplicates.count(i->id) == 0); duplicates.insert(i->id); } } using namespace libtorrent::dht; char const* ips[] = { "124.31.75.21", "21.75.31.124", "65.23.51.170", "84.124.73.14", "43.213.53.83", }; int rs[] = { 1,86,22,65,90 }; boost::uint8_t prefixes[][3] = { { 0x5f, 0xbf, 0xbf }, { 0x5a, 0x3c, 0xe9 }, { 0xa5, 0xd4, 0x32 }, { 0x1b, 0x03, 0x21 }, { 0xe5, 0x6f, 0x6c } }; for (int i = 0; i < 5; ++i) { address a = address_v4::from_string(ips[i]); node_id id = generate_id_impl(a, rs[i]); TEST_CHECK(id[0] == prefixes[i][0]); TEST_CHECK(id[1] == prefixes[i][1]); TEST_CHECK((id[2] & 0xf8) == (prefixes[i][2] & 0xf8)); TEST_CHECK(id[19] == rs[i]); fprintf(stderr, "IP address: %s r: %d node ID: %s\n", ips[i] , rs[i], to_hex(id.to_string()).c_str()); } } // test traversal algorithms dht::key_desc_t find_node_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"t", lazy_entry::string_t, 2, 0}, {"q", lazy_entry::string_t, 9, 0}, {"a", lazy_entry::dict_t, 0, key_desc_t::parse_children}, {"id", lazy_entry::string_t, 20, 0}, {"target", lazy_entry::string_t, 20, key_desc_t::last_child}, }; dht::key_desc_t get_peers_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"t", lazy_entry::string_t, 2, 0}, {"q", lazy_entry::string_t, 9, 0}, {"a", lazy_entry::dict_t, 0, key_desc_t::parse_children}, {"id", lazy_entry::string_t, 20, 0}, {"info_hash", lazy_entry::string_t, 20, key_desc_t::last_child}, }; dht::key_desc_t get_item_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"t", lazy_entry::string_t, 2, 0}, {"q", lazy_entry::string_t, 3, 0}, {"a", lazy_entry::dict_t, 0, key_desc_t::parse_children}, {"id", lazy_entry::string_t, 20, 0}, {"target", lazy_entry::string_t, 20, key_desc_t::last_child}, }; // bootstrap do { dht::node_impl node(&ad, &s, sett, node_id::min(), ext, 0, cnt); udp::endpoint initial_node(address_v4::from_string("4.4.4.4"), 1234); std::vector nodesv; nodesv.push_back(initial_node); node.bootstrap(nodesv, boost::bind(&nop)); TEST_EQUAL(g_sent_packets.size(), 1); if (g_sent_packets.empty()) break; TEST_EQUAL(g_sent_packets.front().first, initial_node); lazy_from_entry(g_sent_packets.front().second, response); ret = verify_message(&response, find_node_desc, parsed, 6, error_string, sizeof(error_string)); if (ret) { TEST_EQUAL(parsed[0]->string_value(), "q"); TEST_EQUAL(parsed[2]->string_value(), "find_node"); if (parsed[0]->string_value() != "q" || parsed[2]->string_value() != "find_node") break; } else { fprintf(stderr, " invalid find_node request: %s\n", print_entry(response).c_str()); TEST_ERROR(error_string); break; } udp::endpoint found_node(address_v4::from_string("5.5.5.5"), 2235); nodes_t nodes; nodes.push_back(found_node); g_sent_packets.clear(); send_dht_response(node, response, initial_node, nodes); TEST_EQUAL(g_sent_packets.size(), 1); if (g_sent_packets.empty()) break; TEST_EQUAL(g_sent_packets.front().first, found_node); lazy_from_entry(g_sent_packets.front().second, response); ret = verify_message(&response, find_node_desc, parsed, 6, error_string, sizeof(error_string)); if (ret) { TEST_EQUAL(parsed[0]->string_value(), "q"); TEST_EQUAL(parsed[2]->string_value(), "find_node"); if (parsed[0]->string_value() != "q" || parsed[2]->string_value() != "find_node") break; } else { fprintf(stderr, " invalid find_node request: %s\n", print_entry(response).c_str()); TEST_ERROR(error_string); break; } g_sent_packets.clear(); send_dht_response(node, response, found_node); TEST_CHECK(g_sent_packets.empty()); TEST_EQUAL(node.num_global_nodes(), 3); } while (false); // get_peers do { dht::node_id target = to_hash("1234876923549721020394873245098347598635"); dht::node_impl node(&ad, &s, sett, node_id::min(), ext, 0, cnt); udp::endpoint initial_node(address_v4::from_string("4.4.4.4"), 1234); node.m_table.add_node(initial_node); node.announce(target, 1234, false, get_peers_cb); TEST_EQUAL(g_sent_packets.size(), 1); if (g_sent_packets.empty()) break; TEST_EQUAL(g_sent_packets.front().first, initial_node); lazy_from_entry(g_sent_packets.front().second, response); ret = verify_message(&response, get_peers_desc, parsed, 6, error_string, sizeof(error_string)); if (ret) { TEST_EQUAL(parsed[0]->string_value(), "q"); TEST_EQUAL(parsed[2]->string_value(), "get_peers"); TEST_EQUAL(parsed[5]->string_value(), target.to_string()); if (parsed[0]->string_value() != "q" || parsed[2]->string_value() != "get_peers") break; } else { fprintf(stderr, " invalid get_peers request: %s\n", print_entry(response).c_str()); TEST_ERROR(error_string); break; } std::set peers[2]; peers[0].insert(tcp::endpoint(address_v4::from_string("4.1.1.1"), 4111)); peers[0].insert(tcp::endpoint(address_v4::from_string("4.1.1.2"), 4112)); peers[0].insert(tcp::endpoint(address_v4::from_string("4.1.1.3"), 4113)); udp::endpoint next_node(address_v4::from_string("5.5.5.5"), 2235); nodes_t nodes; nodes.push_back(next_node); g_sent_packets.clear(); send_dht_response(node, response, initial_node, nodes, "10", 1234, peers[0]); TEST_EQUAL(g_sent_packets.size(), 1); if (g_sent_packets.empty()) break; TEST_EQUAL(g_sent_packets.front().first, next_node); lazy_from_entry(g_sent_packets.front().second, response); ret = verify_message(&response, get_peers_desc, parsed, 6, error_string, sizeof(error_string)); if (ret) { TEST_EQUAL(parsed[0]->string_value(), "q"); TEST_EQUAL(parsed[2]->string_value(), "get_peers"); TEST_EQUAL(parsed[5]->string_value(), target.to_string()); if (parsed[0]->string_value() != "q" || parsed[2]->string_value() != "get_peers") break; } else { fprintf(stderr, " invalid get_peers request: %s\n", print_entry(response).c_str()); TEST_ERROR(error_string); break; } peers[1].insert(tcp::endpoint(address_v4::from_string("4.1.1.4"), 4114)); peers[1].insert(tcp::endpoint(address_v4::from_string("4.1.1.5"), 4115)); peers[1].insert(tcp::endpoint(address_v4::from_string("4.1.1.6"), 4116)); g_sent_packets.clear(); send_dht_response(node, response, next_node, nodes_t(), "11", 1234, peers[1]); for (std::list >::iterator i = g_sent_packets.begin() , end(g_sent_packets.end()); i != end; ++i) { // fprintf(stderr, " %s:%d: %s\n", i->first.address().to_string(ec).c_str() // , i->first.port(), i->second.to_string().c_str()); TEST_EQUAL(i->second["q"].string(), "announce_peer"); } g_sent_packets.clear(); for (int i = 0; i < 2; ++i) { for (std::set::iterator peer = peers[i].begin(); peer != peers[i].end(); ++peer) { TEST_CHECK(std::find(g_got_peers.begin(), g_got_peers.end(), *peer) != g_got_peers.end()); } } g_got_peers.clear(); } while (false); // immutable get do { dht::node_impl node(&ad, &s, sett, node_id::min(), ext, 0, cnt); udp::endpoint initial_node(address_v4::from_string("4.4.4.4"), 1234); node.m_table.add_node(initial_node); node.get_item(items[0].target, get_item_cb); TEST_EQUAL(g_sent_packets.size(), 1); if (g_sent_packets.empty()) break; TEST_EQUAL(g_sent_packets.front().first, initial_node); lazy_from_entry(g_sent_packets.front().second, response); ret = verify_message(&response, get_item_desc, parsed, 6, error_string, sizeof(error_string)); if (ret) { TEST_EQUAL(parsed[0]->string_value(), "q"); TEST_EQUAL(parsed[2]->string_value(), "get"); TEST_EQUAL(parsed[5]->string_value(), items[0].target.to_string()); if (parsed[0]->string_value() != "q" || parsed[2]->string_value() != "get") break; } else { fprintf(stderr, " invalid get request: %s\n", print_entry(response).c_str()); TEST_ERROR(error_string); break; } g_sent_packets.clear(); send_dht_response(node, response, initial_node, nodes_t(), "10", 1234, std::set() , NULL, &items[0].ent); TEST_CHECK(g_sent_packets.empty()); TEST_EQUAL(g_got_items.size(), 1); if (g_got_items.empty()) break; TEST_EQUAL(g_got_items.front().value(), items[0].ent); g_got_items.clear(); } while (false); // mutable get do { dht::node_impl node(&ad, &s, sett, node_id::min(), ext, 0, cnt); udp::endpoint initial_node(address_v4::from_string("4.4.4.4"), 1234); node.m_table.add_node(initial_node); sha1_hash target = hasher(public_key, item_pk_len).final(); node.get_item(target, get_item_cb); TEST_EQUAL(g_sent_packets.size(), 1); if (g_sent_packets.empty()) break; TEST_EQUAL(g_sent_packets.front().first, initial_node); lazy_from_entry(g_sent_packets.front().second, response); ret = verify_message(&response, get_item_desc, parsed, 6, error_string, sizeof(error_string)); if (ret) { TEST_EQUAL(parsed[0]->string_value(), "q"); TEST_EQUAL(parsed[2]->string_value(), "get"); TEST_EQUAL(parsed[5]->string_value(), target.to_string()); if (parsed[0]->string_value() != "q" || parsed[2]->string_value() != "get") break; } else { fprintf(stderr, " invalid get request: %s\n", print_entry(response).c_str()); TEST_ERROR(error_string); break; } g_sent_packets.clear(); itemv.second = bencode(buffer, items[0].ent); sign_mutable_item(itemv, empty_salt, seq, public_key, private_key, signature); send_dht_response(node, response, initial_node, nodes_t(), "10", 1234, std::set() , NULL, &items[0].ent, std::string(public_key, item_pk_len), std::string(signature, item_sig_len), seq); TEST_CHECK(g_sent_packets.empty()); TEST_EQUAL(g_got_items.size(), 1); if (g_got_items.empty()) break; TEST_EQUAL(g_got_items.front().value(), items[0].ent); TEST_CHECK(memcmp(g_got_items.front().pk().data(), public_key, item_pk_len) == 0); TEST_CHECK(memcmp(g_got_items.front().sig().data(), signature, item_sig_len) == 0); TEST_EQUAL(g_got_items.front().seq(), seq); g_got_items.clear(); } while (false); dht::key_desc_t put_immutable_item_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"t", lazy_entry::string_t, 2, 0}, {"q", lazy_entry::string_t, 3, 0}, {"a", lazy_entry::dict_t, 0, key_desc_t::parse_children}, {"id", lazy_entry::string_t, 20, 0}, {"token", lazy_entry::string_t, 2, 0}, {"v", lazy_entry::none_t, 0, key_desc_t::last_child}, }; dht::key_desc_t put_mutable_item_desc[] = { {"y", lazy_entry::string_t, 1, 0}, {"t", lazy_entry::string_t, 2, 0}, {"q", lazy_entry::string_t, 3, 0}, {"a", lazy_entry::dict_t, 0, key_desc_t::parse_children}, {"id", lazy_entry::string_t, 20, 0}, {"cas", lazy_entry::string_t, 20, key_desc_t::optional}, {"k", lazy_entry::string_t, item_pk_len, 0}, {"seq", lazy_entry::int_t, 0, 0}, {"sig", lazy_entry::string_t, item_sig_len, 0}, {"token", lazy_entry::string_t, 2, 0}, {"v", lazy_entry::none_t, 0, key_desc_t::last_child}, }; // immutable put do { dht::node_impl node(&ad, &s, sett, node_id::min(), ext, 0, cnt); enum { num_test_nodes = 2 }; node_entry nodes[num_test_nodes] = { node_entry(generate_next(), udp::endpoint(address_v4::from_string("4.4.4.4"), 1234)) , node_entry(generate_next(), udp::endpoint(address_v4::from_string("5.5.5.5"), 1235)) }; for (int i = 0; i < num_test_nodes; ++i) node.m_table.add_node(nodes[i]); g_put_item.assign(items[0].ent); node.get_item(items[0].target, get_item_cb); TEST_EQUAL(g_sent_packets.size(), num_test_nodes); if (g_sent_packets.size() != num_test_nodes) break; for (int i = 0; i < num_test_nodes; ++i) { std::list >::iterator packet = find_packet(nodes[i].ep()); TEST_CHECK(packet != g_sent_packets.end()); if (packet == g_sent_packets.end()) continue; lazy_from_entry(packet->second, response); ret = verify_message(&response, get_item_desc, parsed, 6, error_string, sizeof(error_string)); if (!ret) { fprintf(stderr, " invalid get request: %s\n", print_entry(response).c_str()); TEST_ERROR(error_string); continue; } char t[10]; snprintf(t, sizeof(t), "%02d", i); send_dht_response(node, response, nodes[i].ep(), nodes_t(), t, 1234, std::set(), 0, 0, std::string(), std::string(), -1, &nodes[i].id); g_sent_packets.erase(packet); } TEST_EQUAL(g_put_count, 1); TEST_EQUAL(g_sent_packets.size(), num_test_nodes); if (g_sent_packets.size() != num_test_nodes) break; itemv.second = bencode(buffer, items[0].ent); for (int i = 0; i < num_test_nodes; ++i) { std::list >::iterator packet = find_packet(nodes[i].ep()); TEST_CHECK(packet != g_sent_packets.end()); if (packet == g_sent_packets.end()) continue; lazy_from_entry(packet->second, response); ret = verify_message(&response, put_immutable_item_desc, parsed, 7, error_string, sizeof(error_string)); if (ret) { TEST_EQUAL(parsed[0]->string_value(), "q"); TEST_EQUAL(parsed[2]->string_value(), "put"); std::pair v = parsed[6]->data_section(); TEST_EQUAL(v.second, itemv.second); TEST_CHECK(memcmp(v.first, itemv.first, itemv.second) == 0); char t[10]; snprintf(t, sizeof(t), "%02d", i); TEST_EQUAL(parsed[5]->string_value(), t); if (parsed[0]->string_value() != "q" || parsed[2]->string_value() != "put") continue; } else { fprintf(stderr, " invalid immutable put request: %s\n", print_entry(response).c_str()); TEST_ERROR(error_string); continue; } } g_sent_packets.clear(); g_put_item.clear(); g_put_count = 0; } while (false); // mutable put do { dht::node_impl node(&ad, &s, sett, node_id::min(), ext, 0, cnt); enum { num_test_nodes = 2 }; node_entry nodes[num_test_nodes] = { node_entry(generate_next(), udp::endpoint(address_v4::from_string("4.4.4.4"), 1234)) , node_entry(generate_next(), udp::endpoint(address_v4::from_string("5.5.5.5"), 1235)) }; for (int i = 0; i < num_test_nodes; ++i) node.m_table.add_node(nodes[i]); sha1_hash target = hasher(public_key, item_pk_len).final(); g_put_item.assign(items[0].ent, empty_salt, seq, public_key, private_key); std::string sig(g_put_item.sig().data(), item_sig_len); node.get_item(target, get_item_cb); TEST_EQUAL(g_sent_packets.size(), num_test_nodes); if (g_sent_packets.size() != num_test_nodes) break; for (int i = 0; i < num_test_nodes; ++i) { std::list >::iterator packet = find_packet(nodes[i].ep()); TEST_CHECK(packet != g_sent_packets.end()); if (packet == g_sent_packets.end()) continue; lazy_from_entry(packet->second, response); ret = verify_message(&response, get_item_desc, parsed, 6, error_string, sizeof(error_string)); if (!ret) { fprintf(stderr, " invalid mutable put request: %s\n", print_entry(response).c_str()); TEST_ERROR(error_string); continue; } char t[10]; snprintf(t, sizeof(t), "%02d", i); send_dht_response(node, response, nodes[i].ep(), nodes_t(), t, 1234, std::set(), 0, 0, std::string(), std::string(), -1, &nodes[i].id); g_sent_packets.erase(packet); } TEST_EQUAL(g_put_count, 1); TEST_EQUAL(g_sent_packets.size(), num_test_nodes); if (g_sent_packets.size() != num_test_nodes) break; itemv.second = bencode(buffer, items[0].ent); for (int i = 0; i < num_test_nodes; ++i) { std::list >::iterator packet = find_packet(nodes[i].ep()); TEST_CHECK(packet != g_sent_packets.end()); if (packet == g_sent_packets.end()) continue; lazy_from_entry(packet->second, response); ret = verify_message(&response, put_mutable_item_desc, parsed, 11, error_string, sizeof(error_string)); if (ret) { TEST_EQUAL(parsed[0]->string_value(), "q"); TEST_EQUAL(parsed[2]->string_value(), "put"); TEST_EQUAL(parsed[6]->string_value(), std::string(public_key, item_pk_len)); TEST_EQUAL(parsed[7]->int_value(), seq); TEST_EQUAL(parsed[8]->string_value(), sig); std::pair v = parsed[10]->data_section(); TEST_EQUAL(v.second, itemv.second); TEST_CHECK(memcmp(v.first, itemv.first, itemv.second) == 0); char t[10]; snprintf(t, sizeof(t), "%02d", i); TEST_EQUAL(parsed[9]->string_value(), t); if (parsed[0]->string_value() != "q" || parsed[2]->string_value() != "put") continue; } else { fprintf(stderr, " invalid put request: %s\n", print_entry(response).c_str()); TEST_ERROR(error_string); continue; } } g_sent_packets.clear(); g_put_item.clear(); g_put_count = 0; } while (false); // test vector 1 // test content std::pair test_content("12:Hello World!", 15); // test salt std::pair test_salt("foobar", 6); from_hex("77ff84905a91936367c01360803104f92432fcd904a43511876df5cdf3e7e548", 64, public_key); from_hex("e06d3183d14159228433ed599221b80bd0a5ce8352e4bdf0262f76786ef1c74d" "b7e7a9fea2c0eb269d61e3b38e450a22e754941ac78479d6c54e1faf6037881d", 128, private_key); sign_mutable_item(test_content, empty_salt, 1, public_key , private_key, signature); TEST_EQUAL(to_hex(std::string(signature, 64)) , "305ac8aeb6c9c151fa120f120ea2cfb923564e11552d06a5d856091e5e853cff" "1260d3f39e4999684aa92eb73ffd136e6f4f3ecbfda0ce53a1608ecd7ae21f01"); sha1_hash target_id = item_target_id(empty_salt, public_key); TEST_EQUAL(to_hex(target_id.to_string()), "4a533d47ec9c7d95b1ad75f576cffc641853b750"); // test vector 2 (the keypair is the same as test 1) sign_mutable_item(test_content, test_salt, 1, public_key , private_key, signature); TEST_EQUAL(to_hex(std::string(signature, 64)) , "6834284b6b24c3204eb2fea824d82f88883a3d95e8b4a21b8c0ded553d17d17d" "df9a8a7104b1258f30bed3787e6cb896fca78c58f8e03b5f18f14951a87d9a08"); target_id = item_target_id(test_salt, public_key); TEST_EQUAL(to_hex(target_id.to_string()), "411eba73b6f087ca51a3795d9c8c938d365e32c1"); // test vector 3 target_id = item_target_id(test_content); TEST_EQUAL(to_hex(target_id.to_string()), "e5f96f6f38320f0f33959cb4d3d656452117aadb"); return 0; } #else int test_main() { return 0; } #endif