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epee: add SSL support

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RPC connections now have optional tranparent SSL.

An optional private key and certificate file can be passed,
using the --{rpc,daemon}-ssl-private-key and
--{rpc,daemon}-ssl-certificate options. Those have as
argument a path to a PEM format private private key and
certificate, respectively.
If not given, a temporary self signed certificate will be used.

SSL can be enabled or disabled using --{rpc}-ssl, which
accepts autodetect (default), disabled or enabled.

Access can be restricted to particular certificates using the
--rpc-ssl-allowed-certificates, which takes a list of
paths to PEM encoded certificates. This can allow a wallet to
connect to only the daemon they think they're connected to,
by forcing SSL and listing the paths to the known good
certificates.

To generate long term certificates:

openssl genrsa -out /tmp/KEY 4096
openssl req -new -key /tmp/KEY -out /tmp/REQ
openssl x509 -req -days 999999 -sha256 -in /tmp/REQ -signkey /tmp/KEY -out /tmp/CERT

/tmp/KEY is the private key, and /tmp/CERT is the certificate,
both in PEM format. /tmp/REQ can be removed. Adjust the last
command to set expiration date, etc, as needed. It doesn't
make a whole lot of sense for monero anyway, since most servers
will run with one time temporary self signed certificates anyway.

SSL support is transparent, so all communication is done on the
existing ports, with SSL autodetection. This means you can start
using an SSL daemon now, but you should not enforce SSL yet or
nothing will talk to you.
This commit is contained in:
moneromooo-monero 2018-06-14 23:44:48 +01:00
parent 31bdf7bd11
commit 2456945408
No known key found for this signature in database
GPG key ID: 686F07454D6CEFC3
25 changed files with 1065 additions and 239 deletions
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46
contrib/epee/src/connection_basic.cpp
View file

@ -48,7 +48,7 @@
#include "net/network_throttle-detail.hpp"
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "net.p2p"
#define MONERO_DEFAULT_LOG_CATEGORY "net.conn"
// ################################################################################################
// local (TU local) headers
@ -113,14 +113,41 @@ connection_basic_pimpl::connection_basic_pimpl(const std::string &name) : m_thro
int connection_basic_pimpl::m_default_tos;
// methods:
connection_basic::connection_basic(boost::asio::ip::tcp::socket&& socket, boost::shared_ptr<socket_stats> stats)
connection_basic::connection_basic(boost::asio::ip::tcp::socket&& sock, boost::shared_ptr<socket_stats> stats, ssl_support_t ssl_support, ssl_context_t &ssl_context)
:
m_stats(std::move(stats)),
mI( new connection_basic_pimpl("peer") ),
strand_(socket.get_io_service()),
socket_(std::move(socket)),
strand_(sock.get_io_service()),
socket_(sock.get_io_service(), ssl_context.context),
m_want_close_connection(false),
m_was_shutdown(false),
m_ssl_support(ssl_support),
m_ssl_context(ssl_context)
{
// add nullptr checks if removed
CHECK_AND_ASSERT_THROW_MES(bool(m_stats), "stats shared_ptr cannot be null");
socket_.next_layer() = std::move(sock);
++(m_stats->sock_count); // increase the global counter
mI->m_peer_number = m_stats->sock_number.fetch_add(1); // use, and increase the generated number
std::string remote_addr_str = "?";
try { boost::system::error_code e; remote_addr_str = socket().remote_endpoint(e).address().to_string(); } catch(...){} ;
_note("Spawned connection #"<<mI->m_peer_number<<" to " << remote_addr_str << " currently we have sockets count:" << m_stats->sock_count);
}
connection_basic::connection_basic(boost::asio::io_service &io_service, boost::shared_ptr<socket_stats> stats, ssl_support_t ssl_support, ssl_context_t &ssl_context)
:
m_stats(std::move(stats)),
mI( new connection_basic_pimpl("peer") ),
strand_(io_service),
socket_(io_service, ssl_context.context),
m_want_close_connection(false),
m_was_shutdown(false)
m_was_shutdown(false),
m_ssl_support(ssl_support),
m_ssl_context(ssl_context)
{
// add nullptr checks if removed
CHECK_AND_ASSERT_THROW_MES(bool(m_stats), "stats shared_ptr cannot be null");
@ -129,17 +156,18 @@ connection_basic::connection_basic(boost::asio::ip::tcp::socket&& socket, boost:
mI->m_peer_number = m_stats->sock_number.fetch_add(1); // use, and increase the generated number
std::string remote_addr_str = "?";
try { boost::system::error_code e; remote_addr_str = socket_.remote_endpoint(e).address().to_string(); } catch(...){} ;
try { boost::system::error_code e; remote_addr_str = socket().remote_endpoint(e).address().to_string(); } catch(...){} ;
_note("Spawned connection p2p#"<<mI->m_peer_number<<" to " << remote_addr_str << " currently we have sockets count:" << m_stats->sock_count);
_note("Spawned connection #"<<mI->m_peer_number<<" to " << remote_addr_str << " currently we have sockets count:" << m_stats->sock_count);
}
connection_basic::~connection_basic() noexcept(false) {
--(m_stats->sock_count);
std::string remote_addr_str = "?";
try { boost::system::error_code e; remote_addr_str = socket_.remote_endpoint(e).address().to_string(); } catch(...){} ;
_note("Destructing connection p2p#"<<mI->m_peer_number << " to " << remote_addr_str);
try { boost::system::error_code e; remote_addr_str = socket().remote_endpoint(e).address().to_string(); } catch(...){} ;
_note("Destructing connection #"<<mI->m_peer_number << " to " << remote_addr_str);
try { throw 0; } catch(...){}
}
void connection_basic::set_rate_up_limit(uint64_t limit) {