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keep only the last seen node on a given host in the white list

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moneromooo 2020-12-02 19:36:08 +00:00 • committed by moneromooo-monero
parent c74d8ffd63
commit 89e984d93b
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3 changed files with 48 additions and 0 deletions
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33
contrib/epee/src/net_utils_base.cpp
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@ -6,6 +6,17 @@
#include "string_tools.h"
#include "net/local_ip.h"
static inline uint32_t 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 htonl(v4);
}
namespace epee { namespace net_utils
{
bool ipv4_network_address::equal(const ipv4_network_address& other) const noexcept
@ -83,6 +94,28 @@ namespace epee { namespace net_utils
network_address::interface const* const other_self = other.self.get();
if (self_ == other_self) return true;
if (!self_ || !other_self) return false;
const bool this_is_4 = get_type_id() == epee::net_utils::ipv4_network_address::get_type_id();
const bool this_is_6 = get_type_id() == epee::net_utils::ipv6_network_address::get_type_id();
const bool other_is_4 = other.get_type_id() == epee::net_utils::ipv4_network_address::get_type_id();
const bool other_is_6 = other.get_type_id() == epee::net_utils::ipv6_network_address::get_type_id();
if (this_is_4 && other_is_6)
{
const boost::asio::ip::address_v6 &actual_ip = other.as<const epee::net_utils::ipv6_network_address>().ip();
if (actual_ip.is_v4_mapped())
{
const uint32_t v4ip = make_address_v4_from_v6(actual_ip);
return is_same_host(ipv4_network_address(v4ip, 0));
}
}
else if (this_is_6 && other_is_4)
{
const boost::asio::ip::address_v6 &actual_ip = this->as<const epee::net_utils::ipv6_network_address>().ip();
if (actual_ip.is_v4_mapped())
{
const uint32_t v4ip = make_address_v4_from_v6(actual_ip);
return other.is_same_host(ipv4_network_address(v4ip, 0));
}
}
if (typeid(*self_) != typeid(*other_self)) return false;
return self_->is_same_host(*other_self);
}