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Merge pull request #7056

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c64b94bd1 p2p: fix endianness when checking IPv6 addresses mapping to IPv4 (moneromooo-monero)
67f2bec2d p2p: make this work with boost <= 1.65 (pffff) (moneromooo-monero)
ffdf1fb1d p2p: rewrite boost's make_address_v4 to cater for < 1.66 (moneromooo)
This commit is contained in:
Alexander Blair 2020-12-03 12:19:15 -08:00
commit e78669257e
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1 changed files with 17 additions and 10 deletions
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27
src/p2p/net_node.inl
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@ -71,6 +71,17 @@
#define MIN_WANTED_SEED_NODES 12 #define MIN_WANTED_SEED_NODES 12
static inline boost::asio::ip::address_v4 make_address_v4_from_v6(const boost::asio::ip::address_v6& a)
{
const auto &bytes = a.to_bytes();
uint32_t v4 = 0;
v4 = (v4 << 8) | bytes[12];
v4 = (v4 << 8) | bytes[13];
v4 = (v4 << 8) | bytes[14];
v4 = (v4 << 8) | bytes[15];
return boost::asio::ip::address_v4(v4);
}
namespace nodetool namespace nodetool
{ {
template<class t_payload_net_handler> template<class t_payload_net_handler>
@ -1496,36 +1507,34 @@ namespace nodetool
const uint32_t actual_ip = na.as<const epee::net_utils::ipv4_network_address>().ip(); const uint32_t actual_ip = na.as<const epee::net_utils::ipv4_network_address>().ip();
classB.insert(actual_ip & 0x0000ffff); classB.insert(actual_ip & 0x0000ffff);
} }
#if BOOST_VERSION > 106600
else if (cntxt.m_remote_address.get_type_id() == epee::net_utils::ipv6_network_address::get_type_id()) else if (cntxt.m_remote_address.get_type_id() == epee::net_utils::ipv6_network_address::get_type_id())
{ {
const epee::net_utils::network_address na = cntxt.m_remote_address; const epee::net_utils::network_address na = cntxt.m_remote_address;
const boost::asio::ip::address_v6 &actual_ip = na.as<const epee::net_utils::ipv6_network_address>().ip(); const boost::asio::ip::address_v6 &actual_ip = na.as<const epee::net_utils::ipv6_network_address>().ip();
if (actual_ip.is_v4_mapped()) if (actual_ip.is_v4_mapped())
{ {
boost::asio::ip::address_v4 v4ip = make_address_v4(boost::asio::ip::v4_mapped, actual_ip); boost::asio::ip::address_v4 v4ip = make_address_v4_from_v6(actual_ip);
uint32_t actual_ipv4; uint32_t actual_ipv4;
memcpy(&actual_ipv4, v4ip.to_bytes().data(), sizeof(actual_ipv4)); memcpy(&actual_ipv4, v4ip.to_bytes().data(), sizeof(actual_ipv4));
classB.insert(actual_ipv4 & ntohl(0xffff0000)); classB.insert(actual_ipv4 & ntohl(0xffff0000));
} }
} }
#endif
return true; return true;
}); });
} }
auto get_host_string = [](const epee::net_utils::network_address &address) { auto get_host_string = [](const epee::net_utils::network_address &address) {
#if BOOST_VERSION > 106600
if (address.get_type_id() == epee::net_utils::ipv6_network_address::get_type_id()) if (address.get_type_id() == epee::net_utils::ipv6_network_address::get_type_id())
{ {
boost::asio::ip::address_v6 actual_ip = address.as<const epee::net_utils::ipv6_network_address>().ip(); boost::asio::ip::address_v6 actual_ip = address.as<const epee::net_utils::ipv6_network_address>().ip();
if (actual_ip.is_v4_mapped()) if (actual_ip.is_v4_mapped())
{ {
boost::asio::ip::address_v4 v4ip = make_address_v4(boost::asio::ip::v4_mapped, actual_ip); boost::asio::ip::address_v4 v4ip = make_address_v4_from_v6(actual_ip);
return epee::net_utils::ipv4_network_address(v4ip.to_uint(), 0).host_str(); uint32_t actual_ipv4;
memcpy(&actual_ipv4, v4ip.to_bytes().data(), sizeof(actual_ipv4));
return epee::net_utils::ipv4_network_address(actual_ipv4, 0).host_str();
} }
} }
#endif
return address.host_str(); return address.host_str();
}; };
std::unordered_set<std::string> hosts_added; std::unordered_set<std::string> hosts_added;
@ -1545,20 +1554,18 @@ namespace nodetool
uint32_t actual_ip = na.as<const epee::net_utils::ipv4_network_address>().ip(); uint32_t actual_ip = na.as<const epee::net_utils::ipv4_network_address>().ip();
skip = classB.find(actual_ip & 0x0000ffff) != classB.end(); skip = classB.find(actual_ip & 0x0000ffff) != classB.end();
} }
#if BOOST_VERSION > 106600
else if (skip_duplicate_class_B && pe.adr.get_type_id() == epee::net_utils::ipv6_network_address::get_type_id()) else if (skip_duplicate_class_B && pe.adr.get_type_id() == epee::net_utils::ipv6_network_address::get_type_id())
{ {
const epee::net_utils::network_address na = pe.adr; const epee::net_utils::network_address na = pe.adr;
const boost::asio::ip::address_v6 &actual_ip = na.as<const epee::net_utils::ipv6_network_address>().ip(); const boost::asio::ip::address_v6 &actual_ip = na.as<const epee::net_utils::ipv6_network_address>().ip();
if (actual_ip.is_v4_mapped()) if (actual_ip.is_v4_mapped())
{ {
boost::asio::ip::address_v4 v4ip = make_address_v4(boost::asio::ip::v4_mapped, actual_ip); boost::asio::ip::address_v4 v4ip = make_address_v4_from_v6(actual_ip);
uint32_t actual_ipv4; uint32_t actual_ipv4;
memcpy(&actual_ipv4, v4ip.to_bytes().data(), sizeof(actual_ipv4)); memcpy(&actual_ipv4, v4ip.to_bytes().data(), sizeof(actual_ipv4));
skip = classB.find(actual_ipv4 & ntohl(0xffff0000)) != classB.end(); skip = classB.find(actual_ipv4 & ntohl(0xffff0000)) != classB.end();
} }
} }
#endif
// consider each host once, to avoid giving undue inflence to hosts running several nodes // consider each host once, to avoid giving undue inflence to hosts running several nodes
if (!skip) if (!skip)