void NetDb::HandleDatabaseStoreMsg (uint8_t * buf, size_t len)
{
I2NPDatabaseStoreMsg * msg = (I2NPDatabaseStoreMsg *)buf;
size_t offset = sizeof (I2NPDatabaseStoreMsg);
if (msg->replyToken)
offset += 36;
if (msg->type)
{
LogPrint ("LeaseSet");
AddLeaseSet (buf + offset, len - offset);
}
else
{
LogPrint ("RouterInfo");
size_t size = be16toh (*(uint16_t *)(buf + offset));
if (size > 2048)
{
LogPrint ("Invalid RouterInfo length ", (int)size);
return;
}
offset += 2;
CryptoPP::Gunzip decompressor;
decompressor.Put (buf + offset, size);
decompressor.MessageEnd();
uint8_t uncompressed[2048];
int uncomressedSize = decompressor.MaxRetrievable ();
decompressor.Get (uncompressed, uncomressedSize);
AddRouterInfo (uncompressed, uncomressedSize);
}
}
Data Gzip::Decompress(const void *data, size_t size) {
//TODO Change interface to taking cpputils::Data objects (needs changing blockstore so we can read their "class Data", because this is called from CompressedBlock::Decompress()).
CryptoPP::Gunzip zipper;
zipper.Put((byte *) data, size);
zipper.MessageEnd();
Data decompressed(zipper.MaxRetrievable());
zipper.Get((byte *) decompressed.data(), decompressed.size());
return decompressed;
}
void DatagramDestination::HandleDataMessagePayload (uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len)
{
// unzip it
CryptoPP::Gunzip decompressor;
decompressor.Put (buf, len);
decompressor.MessageEnd();
uint8_t uncompressed[MAX_DATAGRAM_SIZE];
auto uncompressedLen = decompressor.MaxRetrievable ();
if (uncompressedLen <= MAX_DATAGRAM_SIZE)
{
decompressor.Get (uncompressed, uncompressedLen);
HandleDatagram (fromPort, toPort, uncompressed, uncompressedLen);
}
else
LogPrint ("Received datagram size ", uncompressedLen, " exceeds max size");
}