/*
* Copyright (C) 2014-2016 Savoir-faire Linux Inc.
*
* Author: Adrien Béraud <adrien.beraud@savoirfairelinux.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "tools_common.h"
extern "C" {
#include <gnutls/gnutls.h>
}
#include <set>
#include <thread> // std::this_thread::sleep_for
using namespace dht;
void print_usage() {
std::cout << "Usage: dhtnode [-v [-l logfile]] [-i] [-d] [-n network_id] [-p local_port] [-b bootstrap_host[:port]]" << std::endl << std::endl;
std::cout << "dhtnode, a simple OpenDHT command line node runner." << std::endl;
std::cout << "Report bugs to: http://opendht.net" << std::endl;
}
void print_id_req() {
std::cout << "An identity is required to perform this operation (run with -i)" << std::endl;
}
void print_node_info(const std::shared_ptr<DhtRunner>& dht, const dht_params& params) {
std::cout << "OpenDht node " << dht->getNodeId() << " running on port " << dht->getBoundPort() << std::endl;
if (params.generate_identity)
std::cout << "Public key ID " << dht->getId() << std::endl;
}
void print_help() {
std::cout << "OpenDht command line interface (CLI)" << std::endl;
std::cout << "Possible commands:" << std::endl
<< " h, help Print this help message." << std::endl
<< " x, quit Quit the program." << std::endl
<< " log Start/stop printing DHT logs." << std::endl;
std::cout << std::endl << "Node information:" << std::endl
<< " ll Print basic information and stats about the current node." << std::endl
<< " ls Print basic information about current searches." << std::endl
<< " ld Print basic information about currenty stored values on this node." << std::endl
<< " lr Print the full current routing table of this node" << std::endl;
std::cout << std::endl << "Operations on the DHT:" << std::endl
<< " b <ip:port> Ping potential node at given IP address/port." << std::endl
<< " g <key> Get values at <key>." << std::endl
<< " l <key> Listen for value changes at <key>." << std::endl
<< " p <key> <str> Put string value at <key>." << std::endl
<< " s <key> <str> Put string value at <key>, signed with our generated private key." << std::endl
<< " e <key> <dest> <str> Put string value at <key>, encrypted for <dest> with its public key (if found)." << std::endl;
std::cout << std::endl << "Indexation operations on the DHT:" << std::endl
<< " il <name> <key> [exact match] Lookup the index named <name> with the key <key>." << std::endl
<< " Set [exact match] to 'false' for inexact match lookup." << std::endl
<< " ii <name> <key> <value> Inserts the value <value> under the key <key> in the index named <name>." << std::endl
<< std::endl;
}
void cmd_loop(std::shared_ptr<DhtRunner>& dht, dht_params& params)
{
print_node_info(dht, params);
std::cout << " (type 'h' or 'help' for a list of possible commands)" << std::endl << std::endl;
// using the GNU History API
using_history();
std::map<std::string, indexation::Pht> indexes;
while (true)
{
// using the GNU Readline API
std::string line = readLine();
if (!line.empty() && line[0] == '\0')
break;
std::istringstream iss(line);
std::string op, idstr, value, index, keystr;
iss >> op;
if (op == "x" || op == "exit" || op == "quit") {
break;
} else if (op == "h" || op == "help") {
print_help();
continue;
} else if (op == "ll") {
print_node_info(dht, params);
unsigned good4, dubious4, cached4, incoming4;
unsigned good6, dubious6, cached6, incoming6;
dht->getNodesStats(AF_INET, &good4, &dubious4, &cached4, &incoming4);
dht->getNodesStats(AF_INET6, &good6, &dubious6, &cached6, &incoming6);
std::cout << "IPv4 nodes : " << good4 << " good, " << dubious4 << " dubious, " << incoming4 << " incoming." << std::endl;
std::cout << "IPv6 nodes : " << good6 << " good, " << dubious6 << " dubious, " << incoming6 << " incoming." << std::endl;
continue;
} else if (op == "lr") {
std::cout << "IPv4 routing table:" << std::endl;
std::cout << dht->getRoutingTablesLog(AF_INET) << std::endl;
std::cout << "IPv6 routing table:" << std::endl;
std::cout << dht->getRoutingTablesLog(AF_INET6) << std::endl;
continue;
} else if (op == "ld") {
std::cout << dht->getStorageLog() << std::endl;
continue;
} else if (op == "ls") {
std::cout << "Searches:" << std::endl;
std::cout << dht->getSearchesLog() << std::endl;
continue;
} else if (op == "la") {
std::cout << "Reported public addresses:" << std::endl;
auto addrs = dht->getPublicAddressStr();
for (const auto& addr : addrs)
std::cout << addr << std::endl;
continue;
} else if (op == "b") {
iss >> idstr;
try {
auto addr = splitPort(idstr);
if (not addr.first.empty() and addr.second.empty()){
std::stringstream ss;
ss << DHT_DEFAULT_PORT;
addr.second = ss.str();
}
dht->bootstrap(addr.first.c_str(), addr.second.c_str());
} catch (const std::exception& e) {
std::cerr << e.what() << std::endl;
}
continue;
} else if (op == "log") {
params.log = !params.log;
if (params.log)
log::enableLogging(*dht);
else
log::disableLogging(*dht);
continue;
}
if (op.empty())
continue;
static const std::set<std::string> VALID_OPS {"g", "l", "il", "ii", "p", "s", "e", "a"};
if (VALID_OPS.find(op) == VALID_OPS.cend()) {
std::cout << "Unknown command: " << op << std::endl;
std::cout << " (type 'h' or 'help' for a list of possible commands)" << std::endl;
continue;
}
if (op == "il" or op == "ii") {
// Pht syntax
iss >> index >> keystr;
auto new_index = std::find_if(indexes.begin(), indexes.end(),
[&](std::pair<const std::string, indexation::Pht>& i) {
return i.first == index;
}) == indexes.end();
if (not index.size()) {
std::cout << "You must enter the index name." << std::endl;
continue;
} else if (new_index) {
using namespace dht::indexation;
try {
auto key = createPhtKey(parseStringMap(keystr));
Pht::KeySpec ks;
std::transform(key.begin(), key.end(), std::inserter(ks, ks.end()), [](Pht::Key::value_type& f) {
return std::make_pair(f.first, f.second.size());
});
indexes.emplace(index, Pht {index, std::move(ks), dht});
} catch (std::invalid_argument& e) { std::cout << e.what() << std::endl; }
}
}
else {
// Dht syntax
iss >> idstr;
InfoHash h {idstr};
if (not isInfoHash(h))
continue;
}
dht::InfoHash id {idstr};
// Dht
auto start = std::chrono::high_resolution_clock::now();
if (op == "g") {
std::string rem;
std::getline(iss, rem);
dht->get(id, [start](std::shared_ptr<Value> value) {
auto now = std::chrono::high_resolution_clock::now();
std::cout << "Get: found value (after " << print_dt(now-start) << "s)" << std::endl;
std::cout << "\t" << *value << std::endl;
return true;
}, [start](bool ok) {
auto end = std::chrono::high_resolution_clock::now();
std::cout << "Get: " << (ok ? "completed" : "failure") << " (took " << print_dt(end-start) << "s)" << std::endl;
}, {}, dht::Where {std::move(rem)});
}
else if (op == "q") {
std::string rem;
std::getline(iss, rem);
dht->query(id, [start](const std::vector<std::shared_ptr<FieldValueIndex>>& field_value_indexes) {
auto now = std::chrono::high_resolution_clock::now();
for (auto& index : field_value_indexes) {
std::cout << "Query: found field value index (after " << print_dt(now-start) << "s)" << std::endl;
std::cout << "\t" << *index << std::endl;
}
return true;
}, [start](bool ok) {
auto end = std::chrono::high_resolution_clock::now();
std::cout << "Query: " << (ok ? "completed" : "failure") << " (took " << print_dt(end-start) << "s)" << std::endl;
}, dht::Query {std::move(rem)});
}
else if (op == "l") {
std::string rem;
std::getline(iss, rem);
dht->listen(id, [](std::shared_ptr<Value> value) {
std::cout << "Listen: found value:" << std::endl;
std::cout << "\t" << *value << std::endl;
return true;
}, {}, dht::Where {std::move(rem)});
}
else if (op == "p") {
std::string v;
iss >> v;
dht->put(id, dht::Value {
dht::ValueType::USER_DATA.id,
std::vector<uint8_t> {v.begin(), v.end()}
}, [start](bool ok) {
auto end = std::chrono::high_resolution_clock::now();
std::cout << "Put: " << (ok ? "success" : "failure") << " (took " << print_dt(end-start) << "s)" << std::endl;
});
}
else if (op == "s") {
if (not params.generate_identity) {
print_id_req();
continue;
}
std::string v;
iss >> v;
dht->putSigned(id, dht::Value {
dht::ValueType::USER_DATA.id,
std::vector<uint8_t> {v.begin(), v.end()}
}, [start](bool ok) {
auto end = std::chrono::high_resolution_clock::now();
std::cout << "Put signed: " << (ok ? "success" : "failure") << " (took " << print_dt(end-start) << "s)" << std::endl;
});
}
else if (op == "e") {
if (not params.generate_identity) {
print_id_req();
continue;
}
std::string tostr;
std::string v;
iss >> tostr >> v;
dht->putEncrypted(id, InfoHash(tostr), dht::Value {
dht::ValueType::USER_DATA.id,
std::vector<uint8_t> {v.begin(), v.end()}
}, [start](bool ok) {
auto end = std::chrono::high_resolution_clock::now();
std::cout << "Put encrypted: " << (ok ? "success" : "failure") << " (took " << print_dt(end-start) << "s)" << std::endl;
});
}
else if (op == "a") {
in_port_t port;
iss >> port;
dht->put(id, dht::Value {dht::IpServiceAnnouncement::TYPE.id, dht::IpServiceAnnouncement(port)}, [start](bool ok) {
auto end = std::chrono::high_resolution_clock::now();
std::cout << "Announce: " << (ok ? "success" : "failure") << " (took " << print_dt(end-start) << "s)" << std::endl;
});
}
else if (op == "il") {
std::string exact_match;
iss >> exact_match;
try {
auto key = createPhtKey(parseStringMap(keystr));
indexes.at(index).lookup(key,
[=](std::vector<std::shared_ptr<indexation::Value>>& vals, indexation::Prefix p) {
if (vals.empty())
return;
std::cout << "Pht::lookup: found entries!" << std::endl
<< p.toString() << std::endl
<< " hash: " << p.hash() << std::endl;
std::cout << " entries:" << std::endl;
for (auto v : vals)
std::cout << " " << v->first.toString() << "[vid: " << v->second << "]" << std::endl;
},
[start](bool ok) {
auto end = std::chrono::high_resolution_clock::now();
std::cout << "Pht::lookup: " << (ok ? "done." : "failed.")
<< " took " << print_dt(end-start) << "s)" << std::endl;
}, exact_match.size() != 0 and exact_match == "false" ? false : true
);
}
catch (std::invalid_argument& e) { std::cout << e.what() << std::endl; }
catch (std::out_of_range& e) { }
}
else if (op == "ii") {
iss >> idstr;
InfoHash h {idstr};
if (not isInfoHash(h))
continue;
indexation::Value v {h, 0};
try {
auto key = createPhtKey(parseStringMap(keystr));
indexes.at(index).insert(key, v,
[=](bool ok) {
std::cout << "Pht::insert: " << (ok ? "done." : "failed.") << std::endl;
}
);
}
catch (std::invalid_argument& e) { std::cout << e.what() << std::endl; }
catch (std::out_of_range& e) { }
}
}
std::cout << std::endl << "Stopping node..." << std::endl;
}
int
main(int argc, char **argv)
{
auto dht = std::make_shared<DhtRunner>();
try {
auto params = parseArgs(argc, argv);
if (params.help) {
print_usage();
return 0;
}
if (params.daemonize) {
daemonize();
}
dht::crypto::Identity crt {};
if (params.generate_identity) {
auto ca_tmp = dht::crypto::generateIdentity("DHT Node CA");
crt = dht::crypto::generateIdentity("DHT Node", ca_tmp);
}
dht->run(params.port, crt, true, params.network);
if (params.log) {
if (not params.logfile.empty())
log::enableFileLogging(*dht, params.logfile);
else
log::enableLogging(*dht);
}
if (not params.bootstrap.first.empty()) {
//std::cout << "Bootstrap: " << params.bootstrap.first << ":" << params.bootstrap.second << std::endl;
dht->bootstrap(params.bootstrap.first.c_str(), params.bootstrap.second.c_str());
}
if (params.daemonize) {
while (true)
std::this_thread::sleep_for(std::chrono::seconds(30));
} else {
cmd_loop(dht, params);
}
} catch(const std::exception&e) {
std::cerr << std::endl << e.what() << std::endl;
}
std::condition_variable cv;
std::mutex m;
std::atomic_bool done {false};
dht->shutdown([&]()
{
std::lock_guard<std::mutex> lk(m);
done = true;
cv.notify_all();
});
// wait for shutdown
std::unique_lock<std::mutex> lk(m);
cv.wait(lk, [&](){ return done.load(); });
dht->join();
return 0;
}