| 786 | } |
| 787 | |
| 788 | CNetMessage V1TransportDeserializer::GetMessage(const std::chrono::microseconds time, bool& reject_message) |
| 789 | { |
| 790 | // Initialize out parameter |
| 791 | reject_message = false; |
| 792 | // decompose a single CNetMessage from the TransportDeserializer |
| 793 | CNetMessage msg(std::move(vRecv)); |
| 794 | |
| 795 | // store command string, time, and sizes |
| 796 | msg.m_type = hdr.GetCommand(); |
| 797 | msg.m_time = time; |
| 798 | msg.m_message_size = hdr.nMessageSize; |
| 799 | msg.m_raw_message_size = hdr.nMessageSize + CMessageHeader::HEADER_SIZE; |
| 800 | |
| 801 | uint256 hash = GetMessageHash(); |
| 802 | |
| 803 | // We just received a message off the wire, harvest entropy from the time (and the message checksum) |
| 804 | RandAddEvent(ReadLE32(hash.begin())); |
| 805 | |
| 806 | // Check checksum and header command string |
| 807 | if (memcmp(hash.begin(), hdr.pchChecksum, CMessageHeader::CHECKSUM_SIZE) != 0) { |
| 808 | LogPrint(BCLog::NET, "Header error: Wrong checksum (%s, %u bytes), expected %s was %s, peer=%d\n", |
| 809 | SanitizeString(msg.m_type), msg.m_message_size, |
| 810 | HexStr(Span{hash}.first(CMessageHeader::CHECKSUM_SIZE)), |
| 811 | HexStr(hdr.pchChecksum), |
| 812 | m_node_id); |
| 813 | reject_message = true; |
| 814 | } else if (!hdr.IsCommandValid()) { |
| 815 | LogPrint(BCLog::NET, "Header error: Invalid message type (%s, %u bytes), peer=%d\n", |
| 816 | SanitizeString(hdr.GetCommand()), msg.m_message_size, m_node_id); |
| 817 | reject_message = true; |
| 818 | } |
| 819 | |
| 820 | // Always reset the network deserializer (prepare for the next message) |
| 821 | Reset(); |
| 822 | return msg; |
| 823 | } |
| 824 | |
| 825 | void V1TransportSerializer::prepareForTransport(CSerializedNetMsg& msg, std::vector<unsigned char>& header) { |
| 826 | // create dbl-sha256 checksum |