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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <protocol.h>
#include <common/system.h>
#include <atomic>
static std::atomic<bool> g_initial_block_download_completed(false);
namespace NetMsgType {
const char* VERSION = "version";
const char* VERACK = "verack";
const char* ADDR = "addr";
const char* ADDRV2 = "addrv2";
const char* SENDADDRV2 = "sendaddrv2";
const char* INV = "inv";
const char* GETDATA = "getdata";
const char* MERKLEBLOCK = "merkleblock";
const char* GETBLOCKS = "getblocks";
const char* GETHEADERS = "getheaders";
const char* TX = "tx";
const char* HEADERS = "headers";
const char* BLOCK = "block";
const char* GETADDR = "getaddr";
const char* MEMPOOL = "mempool";
const char* PING = "ping";
const char* PONG = "pong";
const char* NOTFOUND = "notfound";
const char* FILTERLOAD = "filterload";
const char* FILTERADD = "filteradd";
const char* FILTERCLEAR = "filterclear";
const char* SENDHEADERS = "sendheaders";
const char* FEEFILTER = "feefilter";
const char* SENDCMPCT = "sendcmpct";
const char* CMPCTBLOCK = "cmpctblock";
const char* GETBLOCKTXN = "getblocktxn";
const char* BLOCKTXN = "blocktxn";
const char* GETCFILTERS = "getcfilters";
const char* CFILTER = "cfilter";
const char* GETCFHEADERS = "getcfheaders";
const char* CFHEADERS = "cfheaders";
const char* GETCFCHECKPT = "getcfcheckpt";
const char* CFCHECKPT = "cfcheckpt";
const char* WTXIDRELAY = "wtxidrelay";
const char* SENDTXRCNCL = "sendtxrcncl";
} // namespace NetMsgType
/** All known message types. Keep this in the same order as the list of
* messages above and in protocol.h.
*/
const static std::vector<std::string> g_all_net_message_types{
NetMsgType::VERSION,
NetMsgType::VERACK,
NetMsgType::ADDR,
NetMsgType::ADDRV2,
NetMsgType::SENDADDRV2,
NetMsgType::INV,
NetMsgType::GETDATA,
NetMsgType::MERKLEBLOCK,
NetMsgType::GETBLOCKS,
NetMsgType::GETHEADERS,
NetMsgType::TX,
NetMsgType::HEADERS,
NetMsgType::BLOCK,
NetMsgType::GETADDR,
NetMsgType::MEMPOOL,
NetMsgType::PING,
NetMsgType::PONG,
NetMsgType::NOTFOUND,
NetMsgType::FILTERLOAD,
NetMsgType::FILTERADD,
NetMsgType::FILTERCLEAR,
NetMsgType::SENDHEADERS,
NetMsgType::FEEFILTER,
NetMsgType::SENDCMPCT,
NetMsgType::CMPCTBLOCK,
NetMsgType::GETBLOCKTXN,
NetMsgType::BLOCKTXN,
NetMsgType::GETCFILTERS,
NetMsgType::CFILTER,
NetMsgType::GETCFHEADERS,
NetMsgType::CFHEADERS,
NetMsgType::GETCFCHECKPT,
NetMsgType::CFCHECKPT,
NetMsgType::WTXIDRELAY,
NetMsgType::SENDTXRCNCL,
};
CMessageHeader::CMessageHeader(const MessageStartChars& pchMessageStartIn, const char* pszCommand, unsigned int nMessageSizeIn)
{
pchMessageStart = pchMessageStartIn;
// Copy the command name
size_t i = 0;
for (; i < COMMAND_SIZE && pszCommand[i] != 0; ++i) pchCommand[i] = pszCommand[i];
assert(pszCommand[i] == 0); // Assert that the command name passed in is not longer than COMMAND_SIZE
nMessageSize = nMessageSizeIn;
}
std::string CMessageHeader::GetCommand() const
{
return std::string(pchCommand, pchCommand + strnlen(pchCommand, COMMAND_SIZE));
}
bool CMessageHeader::IsCommandValid() const
{
// Check the command string for errors
for (const char* p1 = pchCommand; p1 < pchCommand + COMMAND_SIZE; ++p1) {
if (*p1 == 0) {
// Must be all zeros after the first zero
for (; p1 < pchCommand + COMMAND_SIZE; ++p1) {
if (*p1 != 0) {
return false;
}
}
} else if (*p1 < ' ' || *p1 > 0x7E) {
return false;
}
}
return true;
}
ServiceFlags GetDesirableServiceFlags(ServiceFlags services) {
if ((services & NODE_NETWORK_LIMITED) && g_initial_block_download_completed) {
return ServiceFlags(NODE_NETWORK_LIMITED | NODE_WITNESS);
}
return ServiceFlags(NODE_NETWORK | NODE_WITNESS);
}
void SetServiceFlagsIBDCache(bool state) {
g_initial_block_download_completed = state;
}
CInv::CInv()
{
type = 0;
hash.SetNull();
}
CInv::CInv(uint32_t typeIn, const uint256& hashIn) : type(typeIn), hash(hashIn) {}
bool operator<(const CInv& a, const CInv& b)
{
return (a.type < b.type || (a.type == b.type && a.hash < b.hash));
}
std::string CInv::GetCommand() const
{
std::string cmd;
if (type & MSG_WITNESS_FLAG)
cmd.append("witness-");
int masked = type & MSG_TYPE_MASK;
switch (masked)
{
case MSG_TX: return cmd.append(NetMsgType::TX);
// WTX is not a message type, just an inv type
case MSG_WTX: return cmd.append("wtx");
case MSG_BLOCK: return cmd.append(NetMsgType::BLOCK);
case MSG_FILTERED_BLOCK: return cmd.append(NetMsgType::MERKLEBLOCK);
case MSG_CMPCT_BLOCK: return cmd.append(NetMsgType::CMPCTBLOCK);
default:
throw std::out_of_range(strprintf("CInv::GetCommand(): type=%d unknown type", type));
}
}
std::string CInv::ToString() const
{
try {
return strprintf("%s %s", GetCommand(), hash.ToString());
} catch(const std::out_of_range &) {
return strprintf("0x%08x %s", type, hash.ToString());
}
}
const std::vector<std::string> &getAllNetMessageTypes()
{
return g_all_net_message_types;
}
/**
* Convert a service flag (NODE_*) to a human readable string.
* It supports unknown service flags which will be returned as "UNKNOWN[...]".
* @param[in] bit the service flag is calculated as (1 << bit)
*/
static std::string serviceFlagToStr(size_t bit)
{
const uint64_t service_flag = 1ULL << bit;
switch ((ServiceFlags)service_flag) {
case NODE_NONE: abort(); // impossible
case NODE_NETWORK: return "NETWORK";
case NODE_BLOOM: return "BLOOM";
case NODE_WITNESS: return "WITNESS";
case NODE_COMPACT_FILTERS: return "COMPACT_FILTERS";
case NODE_NETWORK_LIMITED: return "NETWORK_LIMITED";
case NODE_P2P_V2: return "P2P_V2";
// Not using default, so we get warned when a case is missing
}
return strprintf("UNKNOWN[2^%u]", bit);
}
std::vector<std::string> serviceFlagsToStr(uint64_t flags)
{
std::vector<std::string> str_flags;
for (size_t i = 0; i < sizeof(flags) * 8; ++i) {
if (flags & (1ULL << i)) {
str_flags.emplace_back(serviceFlagToStr(i));
}
}
return str_flags;
}
GenTxid ToGenTxid(const CInv& inv)
{
assert(inv.IsGenTxMsg());
return inv.IsMsgWtx() ? GenTxid::Wtxid(inv.hash) : GenTxid::Txid(inv.hash);
}
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