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handle ipv6 address for RelayIntro

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orignal 2021-03-18 18:37:02 -04:00
parent ff9ee5873f
commit ef1dfb153c
1 changed files with 24 additions and 6 deletions
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30
libi2pd/SSUSession.cpp
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@ -716,18 +716,36 @@ namespace transport
void SSUSession::ProcessRelayIntro (const uint8_t * buf, size_t len) void SSUSession::ProcessRelayIntro (const uint8_t * buf, size_t len)
{ {
if (!len) return;
uint8_t size = *buf; uint8_t size = *buf;
if ((int)len < 1 + size + 2) // size + address + port
{
LogPrint (eLogWarning, "SSU: Relay intro is too short ", len);
return;
}
buf++; // size
boost::asio::ip::address ip;
if (size == 4) if (size == 4)
{ {
buf++; // size boost::asio::ip::address_v4::bytes_type bytes;
boost::asio::ip::address_v4 address (bufbe32toh (buf)); memcpy (bytes.data (), buf, 4);
buf += 4; // address ip = boost::asio::ip::address_v4 (bytes);
uint16_t port = bufbe16toh (buf); }
// send hole punch of 0 bytes else if (size == 16)
m_Server.Send (buf, 0, boost::asio::ip::udp::endpoint (address, port)); {
boost::asio::ip::address_v6::bytes_type bytes;
memcpy (bytes.data (), buf, 16);
ip = boost::asio::ip::address_v6 (bytes);
} }
else else
{
LogPrint (eLogWarning, "SSU: Address size ", size, " is not supported"); LogPrint (eLogWarning, "SSU: Address size ", size, " is not supported");
return;
}
buf += size;
uint16_t port = bufbe16toh (buf);
// send hole punch of 0 bytes
m_Server.Send (buf, 0, boost::asio::ip::udp::endpoint (ip, port));
} }
void SSUSession::FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len, void SSUSession::FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len,