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net: CNetAddr: add support to (un)serialize as ADDRv2

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Co-authored-by: Carl Dong <contact@carldong.me>
This commit is contained in:
Vasil Dimov
2020-05-19 15:01:50 +02:00
parent fe42411b4b
commit e0d73573a3
5 changed files with 389 additions and 3 deletions
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55
src/netaddress.cpp
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@@ -14,10 +14,65 @@
#include <algorithm>
#include <array>
#include <cstdint>
#include <ios>
#include <iterator>
#include <tuple>
constexpr size_t CNetAddr::V1_SERIALIZATION_SIZE;
constexpr size_t CNetAddr::MAX_ADDRV2_SIZE;
CNetAddr::BIP155Network CNetAddr::GetBIP155Network() const
{
switch (m_net) {
case NET_IPV4:
return BIP155Network::IPV4;
case NET_IPV6:
return BIP155Network::IPV6;
case NET_ONION:
return BIP155Network::TORV2;
case NET_INTERNAL: // should have been handled before calling this function
case NET_UNROUTABLE: // m_net is never and should not be set to NET_UNROUTABLE
case NET_MAX: // m_net is never and should not be set to NET_MAX
assert(false);
} // no default case, so the compiler can warn about missing cases
assert(false);
}
bool CNetAddr::SetNetFromBIP155Network(uint8_t possible_bip155_net, size_t address_size)
{
switch (possible_bip155_net) {
case BIP155Network::IPV4:
if (address_size == ADDR_IPV4_SIZE) {
m_net = NET_IPV4;
return true;
}
throw std::ios_base::failure(
strprintf("BIP155 IPv4 address with length %u (should be %u)", address_size,
ADDR_IPV4_SIZE));
case BIP155Network::IPV6:
if (address_size == ADDR_IPV6_SIZE) {
m_net = NET_IPV6;
return true;
}
throw std::ios_base::failure(
strprintf("BIP155 IPv6 address with length %u (should be %u)", address_size,
ADDR_IPV6_SIZE));
case BIP155Network::TORV2:
if (address_size == ADDR_TORV2_SIZE) {
m_net = NET_ONION;
return true;
}
throw std::ios_base::failure(
strprintf("BIP155 TORv2 address with length %u (should be %u)", address_size,
ADDR_TORV2_SIZE));
}
// Don't throw on addresses with unknown network ids (maybe from the future).
// Instead silently drop them and have the unserialization code consume
// subsequent ones which may be known to us.
return false;
}
/**
* Construct an unspecified IPv6 network address (::/128).