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Merge pull request #7138 

e9abfea16 Optional DNS based blocklist (moneromooo-monero)
This commit is contained in:
Alexander Blair 2020-12-26 13:38:50 -08:00
parent f191e0a00d e9abfea165
commit 69ed0e0001
No known key found for this signature in database
GPG Key ID: C64552D877C32479
5 changed files with 67 additions and 5 deletions
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2
src/cryptonote_config.h
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@ -197,6 +197,8 @@
#define RPC_CREDITS_PER_HASH_SCALE ((float)(1<<24))
#define DNS_BLOCKLIST_LIFETIME (86400 * 8)
// New constants are intended to go here
namespace config
{

1
src/p2p/net_node.cpp
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@ -149,6 +149,7 @@ namespace nodetool
const command_line::arg_descriptor<std::string> arg_ban_list = {"ban-list", "Specify ban list file, one IP address per line"};
const command_line::arg_descriptor<bool> arg_p2p_hide_my_port = {"hide-my-port", "Do not announce yourself as peerlist candidate", false, true};
const command_line::arg_descriptor<bool> arg_no_sync = {"no-sync", "Don't synchronize the blockchain with other peers", false};
const command_line::arg_descriptor<bool> arg_enable_dns_blocklist = {"enable-dns-blocklist", "Apply realtime blocklist from DNS", false};
const command_line::arg_descriptor<bool> arg_no_igd = {"no-igd", "Disable UPnP port mapping"};
const command_line::arg_descriptor<std::string> arg_igd = {"igd", "UPnP port mapping (disabled, enabled, delayed)", "delayed"};

7
src/p2p/net_node.h
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@ -287,7 +287,7 @@ namespace nodetool
uint32_t get_max_out_public_peers() const;
void change_max_in_public_peers(size_t count);
uint32_t get_max_in_public_peers() const;
virtual bool block_host(epee::net_utils::network_address address, time_t seconds = P2P_IP_BLOCKTIME);
virtual bool block_host(epee::net_utils::network_address address, time_t seconds = P2P_IP_BLOCKTIME, bool add_only = false);
virtual bool unblock_host(const epee::net_utils::network_address &address);
virtual bool block_subnet(const epee::net_utils::ipv4_network_subnet &subnet, time_t seconds = P2P_IP_BLOCKTIME);
virtual bool unblock_subnet(const epee::net_utils::ipv4_network_subnet &subnet);
@ -369,6 +369,7 @@ namespace nodetool
bool peer_sync_idle_maker();
bool do_handshake_with_peer(peerid_type& pi, p2p_connection_context& context, bool just_take_peerlist = false);
bool do_peer_timed_sync(const epee::net_utils::connection_context_base& context, peerid_type peer_id);
bool update_dns_blocklist();
bool make_new_connection_from_anchor_peerlist(const std::vector<anchor_peerlist_entry>& anchor_peerlist);
bool make_new_connection_from_peerlist(network_zone& zone, bool use_white_list);
@ -474,6 +475,7 @@ namespace nodetool
epee::math_helper::once_a_time_seconds<60*30, false> m_peerlist_store_interval;
epee::math_helper::once_a_time_seconds<60> m_gray_peerlist_housekeeping_interval;
epee::math_helper::once_a_time_seconds<3600, false> m_incoming_connections_interval;
epee::math_helper::once_a_time_seconds<7000> m_dns_blocklist_interval;
std::list<epee::net_utils::network_address> m_priority_peers;
std::vector<epee::net_utils::network_address> m_exclusive_peers;
@ -512,6 +514,8 @@ namespace nodetool
cryptonote::network_type m_nettype;
epee::net_utils::ssl_support_t m_ssl_support;
bool m_enable_dns_blocklist;
};
const int64_t default_limit_up = P2P_DEFAULT_LIMIT_RATE_UP; // kB/s
@ -533,6 +537,7 @@ namespace nodetool
extern const command_line::arg_descriptor<std::string> arg_ban_list;
extern const command_line::arg_descriptor<bool> arg_p2p_hide_my_port;
extern const command_line::arg_descriptor<bool> arg_no_sync;
extern const command_line::arg_descriptor<bool> arg_enable_dns_blocklist;
extern const command_line::arg_descriptor<bool> arg_no_igd;
extern const command_line::arg_descriptor<std::string> arg_igd;

58
src/p2p/net_node.inl
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@ -37,6 +37,7 @@
#include <boost/optional/optional.hpp>
#include <boost/thread/thread.hpp>
#include <boost/uuid/uuid_io.hpp>
#include <boost/algorithm/string.hpp>
#include <atomic>
#include <functional>
#include <limits>
@ -120,6 +121,7 @@ namespace nodetool
command_line::add_arg(desc, arg_ban_list);
command_line::add_arg(desc, arg_p2p_hide_my_port);
command_line::add_arg(desc, arg_no_sync);
command_line::add_arg(desc, arg_enable_dns_blocklist);
command_line::add_arg(desc, arg_no_igd);
command_line::add_arg(desc, arg_igd);
command_line::add_arg(desc, arg_out_peers);
@ -226,7 +228,7 @@ namespace nodetool
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::block_host(epee::net_utils::network_address addr, time_t seconds)
bool node_server<t_payload_net_handler>::block_host(epee::net_utils::network_address addr, time_t seconds, bool add_only)
{
if(!addr.is_blockable())
return false;
@ -240,7 +242,11 @@ namespace nodetool
else
limit = now + seconds;
const std::string host_str = addr.host_str();
m_blocked_hosts[host_str] = limit;
auto it = m_blocked_hosts.find(host_str);
if (it == m_blocked_hosts.end())
m_blocked_hosts[host_str] = limit;
else if (it->second < limit || !add_only)
it->second = limit;
// drop any connection to that address. This should only have to look into
// the zone related to the connection, but really make sure everything is
@ -497,6 +503,8 @@ namespace nodetool
if (command_line::has_arg(vm, arg_no_sync))
m_payload_handler.set_no_sync(true);
m_enable_dns_blocklist = command_line::get_arg(vm, arg_enable_dns_blocklist);
if ( !set_max_out_peers(public_zone, command_line::get_arg(vm, arg_out_peers) ) )
return false;
else
@ -1965,6 +1973,52 @@ namespace nodetool
m_gray_peerlist_housekeeping_interval.do_call(boost::bind(&node_server<t_payload_net_handler>::gray_peerlist_housekeeping, this));
m_peerlist_store_interval.do_call(boost::bind(&node_server<t_payload_net_handler>::store_config, this));
m_incoming_connections_interval.do_call(boost::bind(&node_server<t_payload_net_handler>::check_incoming_connections, this));
m_dns_blocklist_interval.do_call(boost::bind(&node_server<t_payload_net_handler>::update_dns_blocklist, this));
return true;
}
//-----------------------------------------------------------------------------------
template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::update_dns_blocklist()
{
if (!m_enable_dns_blocklist)
return true;
if (m_nettype != cryptonote::MAINNET)
return true;
static const std::vector<std::string> dns_urls = {
"blocklist.moneropulse.se"
, "blocklist.moneropulse.org"
, "blocklist.moneropulse.net"
, "blocklist.moneropulse.no"
, "blocklist.moneropulse.fr"
, "blocklist.moneropulse.de"
, "blocklist.moneropulse.ch"
};
std::vector<std::string> records;
if (!tools::dns_utils::load_txt_records_from_dns(records, dns_urls))
return true;
unsigned good = 0, bad = 0;
for (const auto& record : records)
{
std::vector<std::string> ips;
boost::split(ips, record, boost::is_any_of(";"));
for (const auto &ip: ips)
{
const expect<epee::net_utils::network_address> parsed_addr = net::get_network_address(ip, 0);
if (!parsed_addr)
{
MWARNING("Invalid IP address from DNS blocklist: " << ip << " - " << parsed_addr.error());
++bad;
continue;
}
block_host(*parsed_addr, DNS_BLOCKLIST_LIFETIME, true);
++good;
}
}
if (good > 0)
MINFO(good << " addresses added to the blocklist");
return true;
}
//-----------------------------------------------------------------------------------

4
src/p2p/net_node_common.h
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@ -58,7 +58,7 @@ namespace nodetool
virtual uint64_t get_public_connections_count()=0;
virtual void for_each_connection(std::function<bool(t_connection_context&, peerid_type, uint32_t)> f)=0;
virtual bool for_connection(const boost::uuids::uuid&, std::function<bool(t_connection_context&, peerid_type, uint32_t)> f)=0;
virtual bool block_host(epee::net_utils::network_address address, time_t seconds = 0)=0;
virtual bool block_host(epee::net_utils::network_address address, time_t seconds = 0, bool add_only = false)=0;
virtual bool unblock_host(const epee::net_utils::network_address &address)=0;
virtual std::map<std::string, time_t> get_blocked_hosts()=0;
virtual std::map<epee::net_utils::ipv4_network_subnet, time_t> get_blocked_subnets()=0;
@ -108,7 +108,7 @@ namespace nodetool
{
return false;
}
virtual bool block_host(epee::net_utils::network_address address, time_t seconds)
virtual bool block_host(epee::net_utils::network_address address, time_t seconds, bool add_only)
{
return true;
}