add_torrent_params read_resume_data(char const* buffer, int size, error_code& ec)
{
bdecode_node rd;
bdecode(buffer, buffer + size, rd, ec);
if (ec) return add_torrent_params();
return read_resume_data(rd, ec);
}
bdecode_node dht_direct_response_alert::response() const
{
if (m_response_size == 0) return bdecode_node();
char const* start = m_alloc.ptr(m_response_idx);
char const* end = start + m_response_size;
error_code ec;
bdecode_node ret;
bdecode(start, end, ret, ec);
TORRENT_ASSERT(!ec);
return ret;
}
// This function looks up keys from the info-dictionary of the loaded
// torrent file. It can be used to access extension values put in the
// .torrent file. If the specified key cannot be found, it returns NULL.
bdecode_node info(char const* key) const
{
if (m_info_dict.type() == bdecode_node::none_t)
{
error_code ec;
bdecode(m_info_section.get(), m_info_section.get()
+ m_info_section_size, m_info_dict, ec);
if (ec) return bdecode_node();
}
return m_info_dict.dict_find(key);
}
void http_tracker_connection::on_response(error_code const& ec
, http_parser const& parser, char const* data, int size)
{
// keep this alive
boost::intrusive_ptr<http_tracker_connection> me(this);
if (ec && ec != asio::error::eof)
{
fail(-1, ec.message().c_str());
return;
}
if (!parser.header_finished())
{
fail(-1, "premature end of file");
return;
}
if (parser.status_code() != 200)
{
fail(parser.status_code(), parser.message().c_str());
return;
}
if (ec && ec != asio::error::eof)
{
fail(parser.status_code(), ec.message().c_str());
return;
}
// handle tracker response
entry e;
e = bdecode(data, data + size);
if (e.type() == entry::dictionary_t)
{
parse(parser.status_code(), e);
}
else
{
std::string error_str("invalid bencoding of tracker response: \"");
for (char const* i = data, *end(data + size); i != end; ++i)
{
if (*i >= ' ' && *i <= '~') error_str += *i;
else error_str += "0x" + boost::lexical_cast<std::string>((unsigned int)*i) + " ";
}
error_str += "\"";
fail(parser.status_code(), error_str.c_str());
}
close();
}
std::string dht_pkt_alert::message() const
{
bdecode_node print;
error_code ec;
// ignore errors here. This is best-effort. It may be a broken encoding
// but at least we'll print the valid parts
bdecode(pkt_buf(), pkt_buf() + pkt_size(), print, ec, NULL, 100, 100);
std::string msg = print_entry(print, true);
char const* prefix[2] = { "<==", "==>"};
char buf[1024];
snprintf(buf, sizeof(buf), "%s [%s] %s", prefix[dir]
, print_endpoint(node).c_str(), msg.c_str());
return buf;
}
int dump_torrent::printInfo(int argc, char* argv[])
{
fileList.clear();
if (argc < 2 || argc > 4)
{
fputs("usage: dump_torrent torrent-file [total-items-limit] [recursion-limit]\n", stderr);
return 1;
}
int item_limit = 1000000;
int depth_limit = 1000;
std::vector<char> buf;
error_code ec;
int ret = dump_torrent::load_file(argv[0], buf, ec, 40 * 1000000);
if (ret == -1)
{
fprintf(stderr, "file too big, aborting\n");
return 1;
}
if (ret != 0)
{
fprintf(stderr, "failed to load file: %s\n", ec.message().c_str());
return 1;
}
bdecode_node e;
int pos = -1;
printf("decoding. recursion limit: %d total item count limit: %d\n"
, depth_limit, item_limit);
ret = bdecode(&buf[0], &buf[0] + buf.size(), e, ec, &pos
, depth_limit, item_limit);
printf("\n\n----- raw info -----\n\n%s\n", print_entry(e).c_str());
if (ret != 0)
{
fprintf(stderr, "failed to decode: '%s' at character: %d\n", ec.message().c_str(), pos);
return 1;
}
torrent_info t(e, ec);
if (ec)
{
fprintf(stderr, "%s\n", ec.message().c_str());
return 1;
}
e.clear();
std::vector<char>().swap(buf);
// print info about torrent
printf("\n\n----- torrent file info -----\n\n"
"nodes:\n");
typedef std::vector<std::pair<std::string, int> > node_vec;
node_vec const& nodes = t.nodes();
for (node_vec::const_iterator i = nodes.begin(), end(nodes.end());
i != end; ++i)
{
printf("%s: %d\n", i->first.c_str(), i->second);
}
puts("trackers:\n");
for (std::vector<announce_entry>::const_iterator i = t.trackers().begin();
i != t.trackers().end(); ++i)
{
printf("%2d: %s\n", i->tier, i->url.c_str());
}
char ih[41];
to_hex((char const*)&t.info_hash()[0], 20, ih);
printf("number of pieces: %d\n"
"piece length: %d\n"
"info hash: %s\n"
"comment: %s\n"
"created by: %s\n"
"magnet link: %s\n"
"name: %s\n"
"number of files: %d\n"
"files:\n"
, t.num_pieces()
, t.piece_length()
, ih
, t.comment().c_str()
, t.creator().c_str()
, make_magnet_uri(t).c_str()
, t.name().c_str()
, t.num_files());
emit setNumOfPieces(t.num_pieces());
emit setPiecesLength(t.piece_length());
emit setInfoHash(ih);
emit setComment(t.comment().c_str());
emit setCreatedBy(t.creator().c_str());
emit setMagnetLink(make_magnet_uri(t).c_str());
emit setName(t.name().c_str());
emit setNumOfFiles(t.num_files());
fileList.begin();
file_storage const& st = t.files();
for (int i = 0; i < st.num_files(); ++i)
{
int first = st.map_file(i, 0, 0).piece;
int last = st.map_file(i, (std::max)(boost::int64_t(st.file_size(i))-1, boost::int64_t(0)), 0).piece;
int flags = st.file_flags(i);
printf(" %8" PRIx64 " %11" PRId64 " %c%c%c%c [ %5d, %5d ] %7u %s %s %s %s\n"
, st.file_offset(i)
, st.file_size(i)
, ((flags & file_storage::flag_pad_file)?'p':'-')
, ((flags & file_storage::flag_executable)?'x':'-')
, ((flags & file_storage::flag_hidden)?'h':'-')
, ((flags & file_storage::flag_symlink)?'l':'-')
, first, last
, boost::uint32_t(st.mtime(i))
, st.hash(i) != sha1_hash(0) ? to_hex(st.hash(i).to_string()).c_str() : ""
, st.file_path(i).c_str()
, (flags & file_storage::flag_symlink) ? "-> " : ""
, (flags & file_storage::flag_symlink) ? st.symlink(i).c_str() : "");
fileName[i] = st.file_path(i).c_str();
fileList.append(QString(st.file_path(i).c_str()));
}
emit setFilesList(fileList);
for(int i = 0; i < 4;i++){
printf("\n%s\n", fileName[i]);
}
return 0;
}
void TorrentDownloadManager::Run(){
this->isRunning=true;
syslog(LOG_NOTICE,"TorrentDownloadManager starting up");
// Set verboseness of libtorrent
int alertlvl = alert::all_categories & ~alert::debug_notification;
alertlvl &= ~alert::progress_notification;
this->s.set_alert_mask(alertlvl);
// Get default config
FtdConfig& cfg=FtdConfig::Instance();
// Set config
session_settings settings;
settings.user_agent=USER_AGENT;
if(cfg.GetStringOrDefault("general","proxyip","")!=""){
#ifdef SARGE
settings.proxy_ip=cfg.GetStringOrDefault("general","proxyip","");
settings.proxy_port=cfg.GetIntegerOrDefault("general","proxyport",0);
settings.proxy_login=cfg.GetStringOrDefault("general","proxylogin","");
settings.proxy_password=cfg.GetStringOrDefault("general","proxypassword","");
#endif
#ifdef ETCH
//TODO: Implement proxy settings
#endif
}
if(cfg.GetBoolOrDefault("torrent","metadatasupport",true)){
syslog(LOG_INFO,"Adding metadata support to session");
this->s.add_extension(&libtorrent::create_metadata_plugin);
}else{
syslog(LOG_DEBUG,"Not adding metadatasupport");
}
if(cfg.GetBoolOrDefault("torrent","peerexchangesupport",true)){
syslog(LOG_INFO,"Adding peer exchange support to session");
this->s.add_extension(&libtorrent::create_ut_pex_plugin);
}else{
syslog(LOG_DEBUG,"Not adding peer exchange support");
}
if(cfg.GetBoolOrDefault("torrent","dhtsupport",false)){
settings.use_dht_as_fallback = false;
dht_settings dht_s;
dht_s.service_port=cfg.GetIntegerOrDefault("torrent","listenportstart",10000);
this->s.set_dht_settings(dht_s);
entry e;
string stpath=cfg.GetStringOrDefault("general","statedir","/etc/ftd")+"/dhtstate";
if(Stat::FileExists(stpath)){
try{
filebuf fb;
fb.open(stpath.c_str(),ios::in);
iostream infile(&fb);
infile.unsetf(std::ios_base::skipws);
e = bdecode(std::istream_iterator<char>(infile),std::istream_iterator<char>());
}catch(invalid_encoding& ie){
syslog(LOG_ERR,"DHT state file not valid");
}
}
syslog(LOG_INFO,"Starting dht support");
this->s.start_dht(e);
this->s.add_dht_router(std::make_pair(std::string("router.bittorrent.com"),6881));
this->s.add_dht_router(std::make_pair(std::string("router.utorrent.com"),6881));
this->s.add_dht_router(std::make_pair(std::string("router.bitcomet.com"),6881));
}else{
syslog(LOG_DEBUG,"Not starting dht support");
}
this->s.set_max_uploads(cfg.GetIntegerOrDefault("torrent","maxuploads",8));
this->s.set_max_half_open_connections(cfg.GetIntegerOrDefault("torrent","maxhalfopenconnections",-1));
int startport=cfg.GetIntegerOrDefault("torrent","listenportstart",10000);
int endport=cfg.GetIntegerOrDefault("torrent","listenportend",14000);
this->s.set_settings(settings);
if(!this->s.listen_on(make_pair(startport,endport))){
syslog(LOG_CRIT,"Could not open a listening port.");
throw std::runtime_error("Could not open a listening port.");
}
int downloadthrottle=cfg.GetIntegerOrDefault("torrent","maxdownload",0);
int uploadthrottle=cfg.GetIntegerOrDefault("torrent","maxupload",0);
this->SetDownloadThrottle(downloadthrottle);
this->SetUploadThrottle(uploadthrottle);
DirWatcher::Instance().Start();
while(this->isRunning){
this->HandleAlerts();
this->UpdateDownloaders();
sleep(1);
}
}
bool dht_tracker::incoming_packet(udp::endpoint const& ep
, span<char const> const buf)
{
int const buf_size = int(buf.size());
if (buf_size <= 20
|| buf.front() != 'd'
|| buf.back() != 'e') return false;
m_counters.inc_stats_counter(counters::dht_bytes_in, buf_size);
// account for IP and UDP overhead
m_counters.inc_stats_counter(counters::recv_ip_overhead_bytes
, ep.address().is_v6() ? 48 : 28);
m_counters.inc_stats_counter(counters::dht_messages_in);
if (m_settings.ignore_dark_internet && ep.address().is_v4())
{
address_v4::bytes_type b = ep.address().to_v4().to_bytes();
// these are class A networks not available to the public
// if we receive messages from here, that seems suspicious
static std::uint8_t const class_a[] = { 3, 6, 7, 9, 11, 19, 21, 22, 25
, 26, 28, 29, 30, 33, 34, 48, 51, 56
};
if (std::find(std::begin(class_a), std::end(class_a), b[0]) != std::end(class_a))
{
m_counters.inc_stats_counter(counters::dht_messages_in_dropped);
return true;
}
}
if (!m_blocker.incoming(ep.address(), clock_type::now(), m_log))
{
m_counters.inc_stats_counter(counters::dht_messages_in_dropped);
return true;
}
TORRENT_ASSERT(buf_size > 0);
int pos;
error_code err;
int ret = bdecode(buf.data(), buf.data() + buf_size, m_msg, err, &pos, 10, 500);
if (ret != 0)
{
m_counters.inc_stats_counter(counters::dht_messages_in_dropped);
#ifndef TORRENT_DISABLE_LOGGING
m_log->log_packet(dht_logger::incoming_message, buf, ep);
#endif
return false;
}
if (m_msg.type() != bdecode_node::dict_t)
{
m_counters.inc_stats_counter(counters::dht_messages_in_dropped);
#ifndef TORRENT_DISABLE_LOGGING
m_log->log_packet(dht_logger::incoming_message, buf, ep);
#endif
// it's not a good idea to send a response to an invalid messages
return false;
}
#ifndef TORRENT_DISABLE_LOGGING
m_log->log_packet(dht_logger::incoming_message, buf, ep);
#endif
libtorrent::dht::msg m(m_msg, ep);
m_dht.incoming(m);
#if TORRENT_USE_IPV6
m_dht6.incoming(m);
#endif
return true;
}
tracker_response parse_tracker_response(char const* data, int size, error_code& ec
, int flags, sha1_hash scrape_ih)
{
tracker_response resp;
bdecode_node e;
int res = bdecode(data, data + size, e, ec);
if (ec) return resp;
if (res != 0 || e.type() != bdecode_node::dict_t)
{
ec.assign(errors::invalid_tracker_response, get_libtorrent_category());
return resp;
}
int interval = int(e.dict_find_int_value("interval", 0));
// if no interval is specified, default to 30 minutes
if (interval == 0) interval = 1800;
int min_interval = int(e.dict_find_int_value("min interval", 30));
resp.interval = interval;
resp.min_interval = min_interval;
bdecode_node tracker_id = e.dict_find_string("tracker id");
if (tracker_id)
resp.trackerid = tracker_id.string_value();
// parse the response
bdecode_node failure = e.dict_find_string("failure reason");
if (failure)
{
resp.failure_reason = failure.string_value();
ec.assign(errors::tracker_failure, get_libtorrent_category());
return resp;
}
bdecode_node warning = e.dict_find_string("warning message");
if (warning)
resp.warning_message = warning.string_value();
if (0 != (flags & tracker_request::scrape_request))
{
bdecode_node files = e.dict_find_dict("files");
if (!files)
{
ec.assign(errors::invalid_files_entry, get_libtorrent_category());
return resp;
}
bdecode_node scrape_data = files.dict_find_dict(
scrape_ih.to_string());
if (!scrape_data)
{
ec.assign(errors::invalid_hash_entry, get_libtorrent_category());
return resp;
}
resp.complete = int(scrape_data.dict_find_int_value("complete", -1));
resp.incomplete = int(scrape_data.dict_find_int_value("incomplete", -1));
resp.downloaded = int(scrape_data.dict_find_int_value("downloaded", -1));
resp.downloaders = int(scrape_data.dict_find_int_value("downloaders", -1));
return resp;
}
// look for optional scrape info
resp.complete = int(e.dict_find_int_value("complete", -1));
resp.incomplete = int(e.dict_find_int_value("incomplete", -1));
resp.downloaded = int(e.dict_find_int_value("downloaded", -1));
bdecode_node peers_ent = e.dict_find("peers");
if (peers_ent && peers_ent.type() == bdecode_node::string_t)
{
char const* peers = peers_ent.string_ptr();
int len = peers_ent.string_length();
#if TORRENT_USE_I2P
if (0 != (flags & tracker_request::i2p))
{
error_code parse_error;
for (int i = 0; i < len; i += 32)
{
if (len - i < 32) break;
peer_entry p;
p.hostname = base32encode(std::string(peers + i, 32), string::i2p);
p.hostname += ".b32.i2p";
p.port = 6881;
resp.peers.push_back(p);
}
}
else
#endif
{
resp.peers4.reserve(len / 6);
for (int i = 0; i < len; i += 6)
{
if (len - i < 6) break;
ipv4_peer_entry p;
p.ip = detail::read_v4_address(peers).to_v4().to_bytes();
p.port = detail::read_uint16(peers);
resp.peers4.push_back(p);
}
}
}
else if (peers_ent && peers_ent.type() == bdecode_node::list_t)
{
int len = peers_ent.list_size();
resp.peers.reserve(len);
error_code parse_error;
for (int i = 0; i < len; ++i)
{
peer_entry p;
if (!extract_peer_info(peers_ent.list_at(i), p, parse_error))
continue;
resp.peers.push_back(p);
}
// only report an error if all peer entries are invalid
if (resp.peers.empty() && parse_error)
{
ec = parse_error;
return resp;
}
}
else
{
peers_ent.clear();
}
#if TORRENT_USE_IPV6
bdecode_node ipv6_peers = e.dict_find_string("peers6");
if (ipv6_peers)
{
char const* peers = ipv6_peers.string_ptr();
int len = ipv6_peers.string_length();
resp.peers6.reserve(len / 18);
for (int i = 0; i < len; i += 18)
{
if (len - i < 18) break;
ipv6_peer_entry p;
p.ip = detail::read_v6_address(peers).to_v6().to_bytes();
p.port = detail::read_uint16(peers);
resp.peers6.push_back(p);
}
}
else
{
ipv6_peers.clear();
}
#else
bdecode_node ipv6_peers;
#endif
/*
// if we didn't receive any peers. We don't care if we're stopping anyway
if (peers_ent == 0 && ipv6_peers == 0
&& tracker_req().event != tracker_request::stopped)
{
ec.assign(errors::invalid_peers_entry, get_libtorrent_category());
return resp;
}
*/
bdecode_node ip_ent = e.dict_find_string("external ip");
if (ip_ent)
{
char const* p = ip_ent.string_ptr();
if (ip_ent.string_length() == int(address_v4::bytes_type().size()))
resp.external_ip = detail::read_v4_address(p);
#if TORRENT_USE_IPV6
else if (ip_ent.string_length() == int(address_v6::bytes_type().size()))
resp.external_ip = detail::read_v6_address(p);
#endif
}
return resp;
}
