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check and send netid for NTCP2 and SSU

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orignal 2019-08-13 14:55:18 -04:00
parent ad9c11cd92
commit c8cbf425ac
2 changed files with 13 additions and 3 deletions
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6
libi2pd/NTCP2.cpp
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@ -161,6 +161,7 @@ namespace transport
// fill options
uint8_t options[32]; // actual options size is 16 bytes
memset (options, 0, 16);
options[0] = i2p::context.GetNetID (); // network ID
options[1] = 2; // ver
htobe16buf (options + 2, paddingLength); // padLen
// m3p2Len
@ -248,6 +249,11 @@ namespace transport
if (i2p::crypto::AEADChaCha20Poly1305 (m_SessionRequestBuffer + 32, 16, m_H, 32, m_K, nonce, options, 16, false)) // decrypt
{
// options
if (options[0] && options[0] != i2p::context.GetNetID ())
{
LogPrint (eLogWarning, "NTCP2: SessionRequest networkID ", (int)options[0], " mismatch. Expected ", i2p::context.GetNetID ());
return false;
}
if (options[1] == 2) // ver is always 2
{
paddingLen = bufbe16toh (options + 2);