Ejemplo n.º 1
0
static void
proxy_lookup_cb (GObject      *object,
		 GAsyncResult *result,
		 gpointer      user_data)
{
  GTask *task = user_data;
  GProxyAddressEnumeratorPrivate *priv = g_task_get_task_data (task);

  g_clear_error (&priv->last_error);
  priv->proxies = g_proxy_resolver_lookup_finish (G_PROXY_RESOLVER (object),
						  result,
						  &priv->last_error);
  priv->next_proxy = priv->proxies;

  if (priv->last_error)
    {
      complete_async (task);
      return;
    }
  else
    {
      next_enumerator (priv);
      if (priv->addr_enum)
	{
	  g_socket_address_enumerator_next_async (priv->addr_enum,
						  g_task_get_cancellable (task),
						  address_enumerate_cb,
						  task);
	  return;
	}
    }

  complete_async (task);
}
Ejemplo n.º 2
0
static void
next_proxy (GTask *task)
{
  GProxyAddressEnumeratorPrivate *priv = g_task_get_task_data (task);

  if (*priv->next_proxy)
    {
      g_object_unref (priv->addr_enum);
      priv->addr_enum = NULL;

      if (priv->dest_ips)
	{
	  g_resolver_free_addresses (priv->dest_ips);
	  priv->dest_ips = NULL;
	}

      next_enumerator (priv);

      if (priv->addr_enum)
	{
	  g_socket_address_enumerator_next_async (priv->addr_enum,
						  g_task_get_cancellable (task),
						  address_enumerate_cb,
						  task);
	  return;
	}
    }

  complete_async (task);
}
Ejemplo n.º 3
0
void upnp::resend_request(error_code const& ec)
{
#if defined TORRENT_ASIO_DEBUGGING
	complete_async("upnp::resend_request");
#endif
	if (ec) return;

	boost::shared_ptr<upnp> me(self());

	mutex::scoped_lock l(m_mutex);

	if (m_closing) return;

	if (m_retry_count < 12
		&& (m_devices.empty() || m_retry_count < 4))
	{
		discover_device_impl(l);
		return;
	}

	if (m_devices.empty())
	{
		disable(errors::no_router, l);
		return;
	}
	
	for (std::set<rootdevice>::iterator i = m_devices.begin()
		, end(m_devices.end()); i != end; ++i)
	{
		if (i->control_url.empty() && !i->upnp_connection && !i->disabled)
		{
			// we don't have a WANIP or WANPPP url for this device,
			// ask for it
			rootdevice& d = const_cast<rootdevice&>(*i);
			TORRENT_ASSERT(d.magic == 1337);
			TORRENT_TRY
			{
				char msg[500];
				snprintf(msg, sizeof(msg), "connecting to: %s", d.url.c_str());
				log(msg, l);
				if (d.upnp_connection) d.upnp_connection->close();
				d.upnp_connection.reset(new http_connection(m_io_service
					, m_resolver
					, boost::bind(&upnp::on_upnp_xml, self(), _1, _2
					, boost::ref(d), _5)));
				d.upnp_connection->get(d.url, seconds(30), 1);
			}
			TORRENT_CATCH (std::exception& exc)
			{
				TORRENT_DECLARE_DUMMY(std::exception, exc);
				char msg[500];
				snprintf(msg, sizeof(msg), "connection failed to: %s %s", d.url.c_str(), exc.what());
				log(msg, l);
				d.disabled = true;
			}
		}
Ejemplo n.º 4
0
	void i2p_stream::start_read_line(error_code const& e, boost::shared_ptr<handler_type> h)
	{
		TORRENT_ASSERT(m_magic == 0x1337);
#if defined TORRENT_ASIO_DEBUGGING
		complete_async("i2p_stream::start_read_line");
#endif
		if (handle_error(e, h)) return;

#if defined TORRENT_ASIO_DEBUGGING
		add_outstanding_async("i2p_stream::read_line");
#endif
		m_buffer.resize(1);
		async_read(m_sock, boost::asio::buffer(m_buffer)
			, boost::bind(&i2p_stream::read_line, this, _1, h));
	}
Ejemplo n.º 5
0
	void i2p_connection::on_sam_connect(error_code const& ec, i2p_stream::handler_type const& h, boost::shared_ptr<i2p_stream>)
	{
#if defined TORRENT_ASIO_DEBUGGING
		complete_async("i2p_stream::on_sam_connect");
#endif
		m_state = sam_idle;

		if (ec)
		{
			h(ec);
			return;
		}

		do_name_lookup("ME", boost::bind(&i2p_connection::set_local_endpoint, this, _1, _2, h));
	}
Ejemplo n.º 6
0
	void i2p_stream::connected(error_code const& e, boost::shared_ptr<handler_type> h)
	{
		TORRENT_ASSERT(m_magic == 0x1337);
#if defined TORRENT_ASIO_DEBUGGING
		complete_async("i2p_stream::connected");
#endif
		if (handle_error(e, h)) return;

		// send hello command
		m_state = read_hello_response;
		static const char cmd[] = "HELLO VERSION MIN=3.0 MAX=3.0\n";

#if defined TORRENT_ASIO_DEBUGGING
		add_outstanding_async("i2p_stream::start_read_line");
#endif
		async_write(m_sock, boost::asio::buffer(cmd, sizeof(cmd) - 1)
			, boost::bind(&i2p_stream::start_read_line, this, _1, h));
//		fprintf(stderr, ">>> %s", cmd);
	}
Ejemplo n.º 7
0
static void
g_proxy_address_enumerator_next_async (GSocketAddressEnumerator *enumerator,
				       GCancellable             *cancellable,
				       GAsyncReadyCallback       callback,
				       gpointer                  user_data)
{
  GProxyAddressEnumeratorPrivate *priv = GET_PRIVATE (enumerator);
  GTask *task;

  task = g_task_new (enumerator, cancellable, callback, user_data);
  g_task_set_task_data (task, priv, NULL);

  if (priv->proxies == NULL)
    {
      GProxyResolver *resolver = g_proxy_resolver_get_default ();
      g_proxy_resolver_lookup_async (resolver,
				     priv->dest_uri,
				     cancellable,
				     proxy_lookup_cb,
				     task);
      return;
    }

  if (priv->addr_enum)
    {
      if (priv->proxy_address)
	{
	  return_result (task);
	  return;
	}
      else
	{
	  g_socket_address_enumerator_next_async (priv->addr_enum,
						  cancellable,
						  address_enumerate_cb,
						  task);
	  return;
	}
    }

  complete_async (task);
}
Ejemplo n.º 8
0
	void resolver::on_lookup(error_code const& ec, tcp::resolver::iterator i
		, resolver_interface::callback_t h, std::string hostname)
	{
#if defined TORRENT_ASIO_DEBUGGING
		complete_async("resolver::on_lookup");
#endif
		if (ec)
		{
			std::vector<address> empty;
			h(ec, empty);
			return;
		}

		dns_cache_entry& ce = m_cache[hostname];
		time_point now = aux::time_now();
		ce.last_seen = now;
		ce.addresses.clear();
		while (i != tcp::resolver::iterator())
		{
			ce.addresses.push_back(i->endpoint().address());
			++i;
		}

		h(ec, ce.addresses);

		// if m_cache grows too big, weed out the
		// oldest entries
		if (m_cache.size() > m_max_size)
		{
			cache_t::iterator oldest = m_cache.begin();
			for (cache_t::iterator i = m_cache.begin();
				i != m_cache.end(); ++i)
			{
				if (i->second.last_seen < oldest->second.last_seen)
					oldest = i;
			}

			// remove the oldest entry
			m_cache.erase(oldest);
		}
	}
	void timeout_handler::timeout_callback(error_code const& error)
	{
#if defined TORRENT_ASIO_DEBUGGING
		complete_async("timeout_handler::timeout_callback");
#endif
		if (m_abort) return;

		ptime now = time_now_hires();
		time_duration receive_timeout = now - m_read_time;
		time_duration completion_timeout = now - m_start_time;
		
		if ((m_read_timeout
				&& m_read_timeout <= total_seconds(receive_timeout))
			|| (m_completion_timeout
				&& m_completion_timeout <= total_seconds(completion_timeout))
			|| error)
		{
			on_timeout(error);
			return;
		}

		int timeout = 0;
		if (m_read_timeout > 0) timeout = m_read_timeout;
		if (m_completion_timeout > 0)
		{
			timeout = timeout == 0
				? int(m_completion_timeout - total_seconds(m_read_time - m_start_time))
				: (std::min)(int(m_completion_timeout - total_seconds(m_read_time - m_start_time)), timeout);
		}
#if defined TORRENT_ASIO_DEBUGGING
		add_outstanding_async("timeout_handler::timeout_callback");
#endif
		error_code ec;
		m_timeout.expires_at(m_read_time + seconds(timeout), ec);
		m_timeout.async_wait(
			boost::bind(&timeout_handler::timeout_callback, self(), _1));
	}
Ejemplo n.º 10
0
void connection_queue::on_timeout(error_code const& e)
{
#if defined TORRENT_ASIO_DEBUGGING
    complete_async("connection_queue::on_timeout");
#endif
    mutex_t::scoped_lock l(m_mutex);
    --m_num_timers;

    INVARIANT_CHECK;
#ifdef TORRENT_DEBUG
    function_guard guard_(m_in_timeout_function);
#endif

    TORRENT_ASSERT(!e || e == error::operation_aborted);

    // if there was an error, it's most likely operation aborted,
    // we should just quit. However, in case there are still connections
    // in connecting state, and there are no other timer invocations
    // we need to stick around still.
    if (e && (m_num_connecting == 0 || m_num_timers > 0)) return;

    ptime next_expire = max_time();
    ptime now = time_now_hires() + milliseconds(100);
    std::list<entry> timed_out;
    for (std::list<entry>::iterator i = m_queue.begin();
            !m_queue.empty() && i != m_queue.end();)
    {
        if (i->connecting && i->expires < now)
        {
            std::list<entry>::iterator j = i;
            ++i;
            timed_out.splice(timed_out.end(), m_queue, j, i);
            --m_num_connecting;
            continue;
        }
        if (i->connecting && i->expires < next_expire)
            next_expire = i->expires;
        ++i;
    }

    // we don't want to call the timeout callback while we're locked
    // since that is a recepie for dead-locks
    l.unlock();

    for (std::list<entry>::iterator i = timed_out.begin()
                                        , end(timed_out.end()); i != end; ++i)
    {
        TORRENT_ASSERT(i->connecting);
        TORRENT_ASSERT(i->ticket != -1);
        TORRENT_TRY {
            i->on_timeout();
        } TORRENT_CATCH(std::exception&) {}
    }

    l.lock();

    if (next_expire < max_time())
    {
#if defined TORRENT_ASIO_DEBUGGING
        add_outstanding_async("connection_queue::on_timeout");
#endif
        error_code ec;
        m_timer.expires_at(next_expire, ec);
        m_timer.async_wait(boost::bind(&connection_queue::on_timeout, this, _1));
        ++m_num_timers;
    }
    try_connect(l);
}
Ejemplo n.º 11
0
	void i2p_stream::read_line(error_code const& e, boost::shared_ptr<handler_type> h)
	{
		TORRENT_ASSERT(m_magic == 0x1337);
#if defined TORRENT_ASIO_DEBUGGING
		complete_async("i2p_stream::read_line");
#endif
		if (handle_error(e, h)) return;

		int read_pos = m_buffer.size();

		// look for \n which means end of the response
		if (m_buffer[read_pos - 1] != '\n')
		{
#if defined TORRENT_ASIO_DEBUGGING
			add_outstanding_async("i2p_stream::read_line");
#endif
			// read another byte from the socket
			m_buffer.resize(read_pos + 1);
			async_read(m_sock, boost::asio::buffer(&m_buffer[read_pos], 1)
				, boost::bind(&i2p_stream::read_line, this, _1, h));
			return;
		}
		m_buffer[read_pos - 1] = 0;

		if (m_command == cmd_incoming)
		{
			// this is the line containing the destination
			// of the incoming connection in an accept call
			m_dest = &m_buffer[0];
			(*h)(e);
			std::vector<char>().swap(m_buffer);
			return;
		}

		error_code invalid_response(i2p_error::parse_failed
			, get_i2p_category());

		// null-terminate the string and parse it
		m_buffer.push_back(0);
		char* ptr = &m_buffer[0];
		char* next = ptr;

		char const* expect1 = 0;
		char const* expect2 = 0;

		switch (m_state)
		{
			case read_hello_response:
				expect1 = "HELLO";
				expect2 = "REPLY";
				break;
			case read_connect_response:
			case read_accept_response:
				expect1 = "STREAM";
				expect2 = "STATUS";
				break;
			case read_session_create_response:
				expect1 = "SESSION";
				expect2 = "STATUS";
				break;
			case read_name_lookup_response:
				expect1 = "NAMING";
				expect2 = "REPLY";
				break;
		}

//		fprintf(stderr, "<<< %s\n", &m_buffer[0]);
		ptr = string_tokenize(next, ' ', &next);
		if (ptr == 0 || expect1 == 0 || strcmp(expect1, ptr)) { handle_error(invalid_response, h); return; }
		ptr = string_tokenize(next, ' ', &next);
		if (ptr == 0 || expect2 == 0 || strcmp(expect2, ptr)) { handle_error(invalid_response, h); return; }

		int result = 0;
//		char const* message = 0;
//		float version = 3.0f;

		for(;;)
		{
			char* name = string_tokenize(next, '=', &next);
			if (name == 0) break;
//			fprintf(stderr, "name=\"%s\"\n", name);
			char* ptr2 = string_tokenize(next, ' ', &next);
			if (ptr2 == 0) { handle_error(invalid_response, h); return; }
//			fprintf(stderr, "value=\"%s\"\n", ptr2);

			if (strcmp("RESULT", name) == 0)
			{
				if (strcmp("OK", ptr2) == 0)
					result = i2p_error::no_error;
				else if (strcmp("CANT_REACH_PEER", ptr2) == 0)
					result = i2p_error::cant_reach_peer;
				else if (strcmp("I2P_ERROR", ptr2) == 0)
					result = i2p_error::i2p_error;
				else if (strcmp("INVALID_KEY", ptr2) == 0)
					result = i2p_error::invalid_key;
				else if (strcmp("INVALID_ID", ptr2) == 0)
					result = i2p_error::invalid_id;
				else if (strcmp("TIMEOUT", ptr2) == 0)
					result = i2p_error::timeout;
				else if (strcmp("KEY_NOT_FOUND", ptr2) == 0)
					result = i2p_error::key_not_found;
				else if (strcmp("DUPLICATED_ID", ptr2) == 0)
					result = i2p_error::duplicated_id;
				else
					result = i2p_error::num_errors; // unknown error
			}
			else if (strcmp("MESSAGE", name) == 0)
			{
//				message = ptr2;
			}
			else if (strcmp("VERSION", name) == 0)
			{
//				version = float(atof(ptr2));
			}
			else if (strcmp("VALUE", name) == 0)
			{
				m_name_lookup = ptr2;
			}
			else if (strcmp("DESTINATION", name) == 0)
			{
				m_dest = ptr2;
			}
		}

		error_code ec(result, get_i2p_category());
		switch (result)
		{
			case i2p_error::no_error:
			case i2p_error::invalid_key:
				break;
			default:
			{
				handle_error (ec, h);
				return;
			}
		}

		switch (m_state)
		{
		case read_hello_response:
			switch (m_command)
			{
				case cmd_create_session:
					send_session_create(h);
					break;
				case cmd_accept:
					send_accept(h);
					break;
				case cmd_connect:
					send_connect(h);
					break;
				default:
					(*h)(e);
					std::vector<char>().swap(m_buffer);
			}
			break;
		case read_connect_response:
		case read_session_create_response:
		case read_name_lookup_response:
			(*h)(ec);
			std::vector<char>().swap(m_buffer);
			break;
		case read_accept_response:
			// the SAM bridge is waiting for an incoming
			// connection.
			// wait for one more line containing
			// the destination of the remote peer
			m_command = cmd_incoming;
			m_buffer.resize(1);
#if defined TORRENT_ASIO_DEBUGGING
			add_outstanding_async("i2p_stream::read_line");
#endif
			async_read(m_sock, boost::asio::buffer(m_buffer)
				, boost::bind(&i2p_stream::read_line, this, _1, h));
			break;
		}

		return;
	}