std::string make_magnet_uri(torrent_handle const& handle)
{
if (!handle.is_valid()) return "";
char ret[1024];
sha1_hash const& ih = handle.info_hash();
int num_chars = snprintf(ret, sizeof(ret), "magnet:?xt=urn:btih:%s"
, base32encode(std::string((char const*)&ih[0], 20)).c_str());
std::string name = handle.name();
if (!name.empty())
num_chars += snprintf(ret + num_chars, sizeof(ret) - num_chars, "&dn=%s"
, escape_string(name.c_str(), name.length()).c_str());
std::string tracker;
torrent_status st = handle.status();
if (!st.current_tracker.empty())
{
tracker = st.current_tracker;
}
else
{
std::vector<announce_entry> const& tr = handle.trackers();
if (!tr.empty()) tracker = tr[0].url;
}
if (!tracker.empty())
num_chars += snprintf(ret + num_chars, sizeof(ret) - num_chars, "&tr=%s"
, escape_string(tracker.c_str(), tracker.size()).c_str());
return ret;
}
std::string make_magnet_uri(torrent_handle const& handle)
{
std::stringstream ret;
if (!handle.is_valid()) return ret.str();
std::string name = handle.name();
ret << "magnet:?xt=urn:btih:" << base32encode(
std::string((char*)handle.info_hash().begin(), 20));
if (!name.empty())
ret << "&dn=" << escape_string(name.c_str(), name.length());
torrent_status st = handle.status();
if (!st.current_tracker.empty())
{
ret << "&tr=" << escape_string(st.current_tracker.c_str()
, st.current_tracker.length());
}
else
{
std::vector<announce_entry> const& tr = handle.trackers();
if (!tr.empty())
{
ret << "&tr=" << escape_string(tr[0].url.c_str()
, tr[0].url.length());
}
}
return ret.str();
}
std::string make_magnet_uri(torrent_info const& info)
{
std::stringstream ret;
if (!info.is_valid()) return ret.str();
std::string name = info.name();
ret << "magnet:?xt=urn:btih:" << base32encode(
std::string((char*)info.info_hash().begin(), 20));
if (!name.empty())
ret << "&dn=" << escape_string(name.c_str(), name.length());
std::vector<announce_entry> const& tr = info.trackers();
if (!tr.empty())
{
ret << "&tr=" << escape_string(tr[0].url.c_str()
, tr[0].url.length());
}
return ret.str();
}
std::string make_magnet_uri(torrent_info const& info)
{
char ret[1024];
int num_chars = snprintf(ret, sizeof(ret), "magnet:?xt=urn:btih:%s"
, base32encode(std::string((char*)info.info_hash().begin(), 20)).c_str());
std::string const& name = info.name();
if (!name.empty())
num_chars += snprintf(ret + num_chars, sizeof(ret) - num_chars, "&dn=%s"
, escape_string(name.c_str(), name.length()).c_str());
std::vector<announce_entry> const& tr = info.trackers();
if (!tr.empty())
{
num_chars += snprintf(ret + num_chars, sizeof(ret) - num_chars, "&tr=%s"
, escape_string(tr[0].url.c_str(), tr[0].url.length()).c_str());
}
return ret;
}
int main(int argc, char **argv) {
long long r, w;
if (argv[0])
if (argv[1])
if (str_equal(argv[1], "-h"))
die_usage();
for (;;) {
r = readblock(0, bufr, sizeof bufr);
if (r == -1) die_fatal("unable to read input", 0);
if (r == 0) die();
w = (((r * 8) + 4) / 5);
if (!base32encode(bufw, w + 1, bufr, r)) { errno = 0; die_fatal("unable to encode to base32", 0); }
out(bufw, w);
if (r != sizeof bufr) die();
}
return 0;
}
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;
}
