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Mostly-working Hush full node sans Verus!!!

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Every line of Verus-specific code has been removed from the codebase.
This code compiles on Linux and can do a partial sync. A full sync
and other extensive tests need to be done before it's merged into
the duke branch.

BUGS:

One known bug is that the node starts to CPU mine by default, lol.
This commit is contained in:
Duke Leto
2019-11-05 09:39:11 -05:00
parent f80fc3c002
commit e87d029968
11 changed files with 13 additions and 368 deletions
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116
src/cc/COptCCParams.cpp
View File

@@ -1,116 +0,0 @@
/*Descriptson and examples of COptCCParams class found in:
script/standard.h/cpp
class COptCCParams
structure of data in vData payload attached to end of CCvout:
param
OP_1
param
OP_2 ... etc until OP_16
OP_PUSHDATA4 is the last OP code to tell things its at the end.
taken from standard.cpp line 22: COptCCParams::COptCCParams(std::vector<unsigned char> &vch)
EXAMPLE taken from Verus how to create scriptPubKey from COptCCParams class:
EXAMPLE taken from Verus how to decode scriptPubKey from COptCCParams class:
*/
bool MakeGuardedOutput(CAmount value, CPubKey &dest, CTransaction &stakeTx, CTxOut &vout)
{
CCcontract_info *cp, C;
cp = CCinit(&C,EVAL_STAKEGUARD);
CPubKey ccAddress = CPubKey(ParseHex(cp->CChexstr));
// return an output that is bound to the stake transaction and can be spent by presenting either a signed condition by the original
// destination address or a properly signed stake transaction of the same utxo on a fork
vout = MakeCC1of2vout(EVAL_STAKEGUARD, value, dest, ccAddress);
std::vector<CPubKey> vPubKeys = std::vector<CPubKey>();
vPubKeys.push_back(dest);
vPubKeys.push_back(ccAddress);
std::vector<std::vector<unsigned char>> vData = std::vector<std::vector<unsigned char>>();
CVerusHashWriter hw = CVerusHashWriter(SER_GETHASH, PROTOCOL_VERSION);
hw << stakeTx.vin[0].prevout.hash;
hw << stakeTx.vin[0].prevout.n;
uint256 utxo = hw.GetHash();
vData.push_back(std::vector<unsigned char>(utxo.begin(), utxo.end())); // Can we use any data here to construct vector?
CStakeParams p;
if (GetStakeParams(stakeTx, p))
{
// prev block hash and height is here to make validation easy
vData.push_back(std::vector<unsigned char>(p.prevHash.begin(), p.prevHash.end()));
std::vector<unsigned char> height = std::vector<unsigned char>(4);
for (int i = 0; i < 4; i++)
{
height[i] = (p.blkHeight >> (8 * i)) & 0xff;
}
vData.push_back(height);
COptCCParams ccp = COptCCParams(COptCCParams::VERSION, EVAL_STAKEGUARD, 1, 2, vPubKeys, vData);
vout.scriptPubKey << ccp.AsVector() << OP_DROP;
return true;
}
return false;
}
bool ValidateMatchingStake(const CTransaction &ccTx, uint32_t voutNum, const CTransaction &stakeTx, bool &cheating)
{
// an invalid or non-matching stake transaction cannot cheat
cheating = false;
//printf("ValidateMatchingStake: ccTx.vin[0].prevout.hash: %s, ccTx.vin[0].prevout.n: %d\n", ccTx.vin[0].prevout.hash.GetHex().c_str(), ccTx.vin[0].prevout.n);
if (ccTx.IsCoinBase())
{
CStakeParams p;
if (ValidateStakeTransaction(stakeTx, p))
{
std::vector<std::vector<unsigned char>> vParams = std::vector<std::vector<unsigned char>>();
CScript dummy;
if (ccTx.vout[voutNum].scriptPubKey.IsPayToCryptoCondition(&dummy, vParams) && vParams.size() > 0)
{
COptCCParams ccp = COptCCParams(vParams[0]);
if (ccp.IsValid() & ccp.vData.size() >= 3 && ccp.vData[2].size() <= 4)
{
CVerusHashWriter hw = CVerusHashWriter(SER_GETHASH, PROTOCOL_VERSION);
hw << stakeTx.vin[0].prevout.hash;
hw << stakeTx.vin[0].prevout.n;
uint256 utxo = hw.GetHash();
uint32_t height = 0;
int i, dataLen = ccp.vData[2].size();
for (i = dataLen - 1; i >= 0; i--)
{
height = (height << 8) + ccp.vData[2][i];
}
// for debugging strange issue
// printf("iterator: %d, height: %d, datalen: %d\n", i, height, dataLen);
if (utxo == uint256(ccp.vData[0]))
{
if (p.prevHash != uint256(ccp.vData[1]) && p.blkHeight >= height)
{
cheating = true;
return true;
}
// if block height is equal and we are at the else, prevHash must have been equal
else if (p.blkHeight == height)
{
return true;
}
}
}
}
}
}
return false;
}