std::string make_magnet_uri(torrent_handle const& handle)
{
if (!handle.is_valid()) return "";
std::string ret;
sha1_hash const& ih = handle.info_hash();
ret += "magnet:?xt=urn:btih:";
ret += to_hex(ih.to_string());
torrent_status st = handle.status(torrent_handle::query_name);
if (!st.name.empty())
{
ret += "&dn=";
ret += escape_string(st.name.c_str(), st.name.length());
}
std::vector<announce_entry> const& tr = handle.trackers();
for (std::vector<announce_entry>::const_iterator i = tr.begin(), end(tr.end()); i != end; ++i)
{
ret += "&tr=";
ret += escape_string(i->url.c_str(), i->url.length());
}
std::set<std::string> seeds = handle.url_seeds();
for (std::set<std::string>::iterator i = seeds.begin()
, end(seeds.end()); i != end; ++i)
{
ret += "&ws=";
ret += escape_string(i->c_str(), i->length());
}
return ret;
}
std::string make_magnet_uri(torrent_handle const& handle)
{
if (!handle.is_valid()) return "";
std::string ret;
sha1_hash const& ih = handle.info_hash();
ret += "magnet:?xt=urn:btih:";
ret += aux::to_hex(ih);
torrent_status st = handle.status(torrent_handle::query_name);
if (!st.name.empty())
{
ret += "&dn=";
ret += escape_string(st.name);
}
for (auto const& tr : handle.trackers())
{
ret += "&tr=";
ret += escape_string(tr.url);
}
for (auto const& s : handle.url_seeds())
{
ret += "&ws=";
ret += escape_string(s);
}
return ret;
}
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();
}
