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Merge pull request #7208

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b8bc4d77b ssl: buffered handshake detection (anon)
This commit is contained in:
Alexander Blair 2020-12-29 10:45:03 -08:00
commit 3a477a54a2
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GPG key ID: C64552D877C32479
5 changed files with 14 additions and 13 deletions
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17
contrib/epee/include/net/abstract_tcp_server2.inl
View file

@ -207,7 +207,6 @@ PRAGMA_WARNING_DISABLE_VS(4355)
buffer_ssl_init_fill = 0;
if (is_income && m_ssl_support != epee::net_utils::ssl_support_t::e_ssl_support_disabled)
socket().async_receive(boost::asio::buffer(buffer_),
boost::asio::socket_base::message_peek,
strand_.wrap(
std::bind(&connection<t_protocol_handler>::handle_receive, self,
std::placeholders::_1,
@ -447,16 +446,11 @@ PRAGMA_WARNING_DISABLE_VS(4355)
return;
}
buffer_ssl_init_fill = bytes_transferred;
buffer_ssl_init_fill += bytes_transferred;
MTRACE("we now have " << buffer_ssl_init_fill << "/" << get_ssl_magic_size() << " bytes needed to detect SSL");
if (buffer_ssl_init_fill < get_ssl_magic_size())
{
// don't busy loop on this, ideally we'd want to queue a "async_receive_if_new_data" but there doesn't
// seem to be something like that in boost if we want to just peek at the data, so we'd need to copy and
// have a bit more code just for this. Though I'm just seeing async_read_until which might just work.
epee::misc_utils::sleep_no_w(100);
socket().async_receive(boost::asio::buffer(buffer_.data(), buffer_.size()),
boost::asio::socket_base::message_peek,
socket().async_receive(boost::asio::buffer(buffer_.data() + buffer_ssl_init_fill, buffer_.size() - buffer_ssl_init_fill),
strand_.wrap(
boost::bind(&connection<t_protocol_handler>::handle_receive, connection<t_protocol_handler>::shared_from_this(),
boost::asio::placeholders::error,
@ -482,7 +476,7 @@ PRAGMA_WARNING_DISABLE_VS(4355)
if (m_ssl_support == epee::net_utils::ssl_support_t::e_ssl_support_enabled)
{
// Handshake
if (!handshake(boost::asio::ssl::stream_base::server))
if (!handshake(boost::asio::ssl::stream_base::server, boost::asio::const_buffer(buffer_.data(), buffer_ssl_init_fill)))
{
MERROR("SSL handshake failed");
boost::interprocess::ipcdetail::atomic_write32(&m_want_close_connection, 1);
@ -497,6 +491,11 @@ PRAGMA_WARNING_DISABLE_VS(4355)
return;
}
}
else
{
handle_read(e, buffer_ssl_init_fill);
return;
}
async_read_some(boost::asio::buffer(buffer_),
strand_.wrap(

4
contrib/epee/include/net/connection_basic.hpp
View file

@ -132,10 +132,10 @@ class connection_basic { // not-templated base class for rapid developmet of som
ssl_support_t get_ssl_support() const { return m_ssl_support; }
void disable_ssl() { m_ssl_support = epee::net_utils::ssl_support_t::e_ssl_support_disabled; }
bool handshake(boost::asio::ssl::stream_base::handshake_type type)
bool handshake(boost::asio::ssl::stream_base::handshake_type type, boost::asio::const_buffer buffer = {})
{
//m_state != nullptr verified in constructor
return m_state->ssl_options().handshake(socket_, type);
return m_state->ssl_options().handshake(socket_, type, buffer);
}
template<typename MutableBufferSequence, typename ReadHandler>

2
contrib/epee/include/net/net_helper.h
View file

@ -178,7 +178,7 @@ namespace net_utils
// SSL Options
if (m_ssl_options.support == epee::net_utils::ssl_support_t::e_ssl_support_enabled || m_ssl_options.support == epee::net_utils::ssl_support_t::e_ssl_support_autodetect)
{
if (!m_ssl_options.handshake(*m_ssl_socket, boost::asio::ssl::stream_base::client, addr, timeout))
if (!m_ssl_options.handshake(*m_ssl_socket, boost::asio::ssl::stream_base::client, {}, addr, timeout))
{
if (m_ssl_options.support == epee::net_utils::ssl_support_t::e_ssl_support_autodetect)
{

1
contrib/epee/include/net/net_ssl.h
View file

@ -132,6 +132,7 @@ namespace net_utils
bool handshake(
boost::asio::ssl::stream<boost::asio::ip::tcp::socket> &socket,
boost::asio::ssl::stream_base::handshake_type type,
boost::asio::const_buffer buffer = {},
const std::string& host = {},
std::chrono::milliseconds timeout = std::chrono::seconds(15)) const;
};

3
contrib/epee/src/net_ssl.cpp
View file

@ -473,6 +473,7 @@ bool ssl_options_t::has_fingerprint(boost::asio::ssl::verify_context &ctx) const
bool ssl_options_t::handshake(
boost::asio::ssl::stream<boost::asio::ip::tcp::socket> &socket,
boost::asio::ssl::stream_base::handshake_type type,
boost::asio::const_buffer buffer,
const std::string& host,
std::chrono::milliseconds timeout) const
{
@ -530,7 +531,7 @@ bool ssl_options_t::handshake(
});
boost::system::error_code ec = boost::asio::error::would_block;
socket.async_handshake(type, boost::lambda::var(ec) = boost::lambda::_1);
socket.async_handshake(type, boost::asio::buffer(buffer), boost::lambda::var(ec) = boost::lambda::_1);
if (io_service.stopped())
{
io_service.reset();