void Cconnection::read(const std::string& v)
{
#ifndef NDEBUG
std::cout << v << std::endl;
#endif
if (m_server->config().m_log_access)
{
static std::ofstream f("xbt_tracker_raw.log");
f << m_server->time() << '\t' << inet_ntoa(m_a.sin_addr) << '\t' << ntohs(m_a.sin_port) << '\t' << v << std::endl;
}
Ctracker_input ti;
size_t e = v.find('?');
if (e == std::string::npos)
e = v.size();
else
{
size_t a = e + 1;
size_t b = v.find(' ', a);
if (b == std::string::npos)
return;
while (a < b)
{
size_t c = v.find('=', a);
if (c++ == std::string::npos)
break;
size_t d = v.find_first_of(" &", c);
if (d == std::string::npos)
break;
ti.set(v.substr(a, c - a - 1), uri_decode(v.substr(c, d - c)));
a = d + 1;
}
}
if (!ti.m_ipa || !is_private_ipa(m_a.sin_addr.s_addr))
ti.m_ipa = m_a.sin_addr.s_addr;
std::string torrent_pass0;
size_t a = 4;
if (a < e && v[a] == '/')
{
a++;
if (a + 1 < e && v[a + 1] == '/')
a += 2;
if (a + 32 < e && v[a + 32] == '/')
{
torrent_pass0 = v.substr(a, 32);
a += 33;
if (a + 40 < e && v[a + 40] == '/')
a += 41;
}
}
std::string h = "HTTP/1.0 200 OK\r\n";
Cvirtual_binary s;
bool gzip = true;
switch (a < v.size() ? v[a] : 0)
{
case 'a':
if (!ti.valid())
break;
gzip = false;
if (0)
s = Cbvalue().d(bts_failure_reason, bts_banned_client).read();
else
{
std::string error = m_server->insert_peer(ti, false, m_server->find_user_by_torrent_pass(torrent_pass0, ti.m_info_hash));
s = error.empty() ? m_server->select_peers(ti) : Cbvalue().d(bts_failure_reason, error).read();
}
break;
case 'd':
if (m_server->config().m_debug)
{
gzip = m_server->config().m_gzip_debug;
h += "Content-Type: text/html; charset=us-ascii\r\n";
s = Cvirtual_binary(m_server->debug(ti));
}
break;
case 's':
if (v.size() >= 7 && v[6] == 't')
{
gzip = m_server->config().m_gzip_debug;
h += "Content-Type: text/html; charset=us-ascii\r\n";
s = Cvirtual_binary(m_server->statistics());
}
else if (m_server->config().m_full_scrape || ti.m_compact || !ti.m_info_hash.empty())
{
gzip = m_server->config().m_gzip_scrape && !ti.m_compact && ti.m_info_hash.empty();
s = m_server->scrape(ti);
}
break;
}
if (s.empty())
{
if (!ti.m_peer_id.empty() || m_server->config().m_redirect_url.empty())
h = "HTTP/1.0 404 Not Found\r\n";
else
{
h = "HTTP/1.0 302 Found\r\n"
"Location: " + m_server->config().m_redirect_url + (ti.m_info_hash.empty() ? "" : "?info_hash=" + uri_encode(ti.m_info_hash)) + "\r\n";
}
}
else if (gzip)
{
Cvirtual_binary s2 = xcc_z::gzip(s);
#ifndef NDEBUG
static std::ofstream f("xbt_tracker_gzip.log");
f << m_server->time() << '\t' << v[5] << '\t' << s.size() << '\t' << s2.size() << std::endl;
#endif
if (s2.size() + 24 < s.size())
{
h += "Content-Encoding: gzip\r\n";
s = s2;
}
}
h += "\r\n";
#ifdef WIN32
m_write_b.resize(h.size() + s.size());
memcpy(m_write_b.data_edit(), h.data(), h.size());
s.read(m_write_b.data_edit() + h.size());
int r = m_s.send(m_write_b);
#else
boost::array<iovec, 2> d;
d[0].iov_base = const_cast<char*>(h.data());
d[0].iov_len = h.size();
d[1].iov_base = const_cast<unsigned char*>(s.data());
d[1].iov_len = s.size();
msghdr m;
m.msg_name = NULL;
m.msg_namelen = 0;
m.msg_iov = const_cast<iovec*>(d.data());
m.msg_iovlen = d.size();
m.msg_control = NULL;
m.msg_controllen = 0;
m.msg_flags = 0;
int r = sendmsg(m_s, &m, MSG_NOSIGNAL);
#endif
if (r == SOCKET_ERROR)
{
if (WSAGetLastError() != WSAECONNRESET)
std::cerr << "send failed: " << Csocket::error2a(WSAGetLastError()) << std::endl;
}
else if (r != h.size() + s.size())
{
#ifndef WIN32
if (r < h.size())
{
m_write_b.resize(h.size() + s.size());
memcpy(m_write_b.data_edit(), h.data(), h.size());
s.read(m_write_b.data_edit() + h.size());
}
else
{
m_write_b = s;
r -= h.size();
}
#endif
m_r = m_write_b;
m_r += r;
}
if (m_r.empty())
m_write_b.clear();
}
