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Latest Zcash updates and more CC for N@S

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This commit is contained in:
miketout
2018-10-05 00:26:06 -07:00
parent 7a9960f086 4ba35551d4
commit 3bfa5e2264
26 changed files with 657 additions and 154 deletions
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35
src/cc/CoinbaseGuard.cpp
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@@ -18,11 +18,16 @@
extern int32_t VERUS_MIN_STAKEAGE;
bool IsData(opcodetype opcode)
{
return (opcode >= 0 && opcode <= OP_PUSHDATA4) || (opcode >= OP_1 && opcode <= OP_16);
}
bool UnpackStakeOpRet(const CTransaction &stakeTx, std::vector<std::vector<unsigned char>> &vData)
{
bool isValid = stakeTx.vout[stakeTx.vout.size() - 1].scriptPubKey.GetOpretData(vData);
if (isValid && vData.size() == 1 && vData[0][0] > 0 && vData[0][0] < 4)
if (isValid && vData.size() == 1)
{
CScript data = CScript(vData[0].begin(), vData[0].end());
vData.clear();
@@ -34,9 +39,14 @@ bool UnpackStakeOpRet(const CTransaction &stakeTx, std::vector<std::vector<unsig
bool moreData = true;
for (bytesTotal = vch.size();
bytesTotal <= nMaxDatacarrierBytes && !(isValid = (pc == data.end())) && (moreData = data.GetOp(pc, op, vch)) && (op > 0 && op <= OP_PUSHDATA4);
bytesTotal <= nMaxDatacarrierBytes && !(isValid = (pc == data.end())) && (moreData = data.GetOp(pc, op, vch)) && IsData(op);
bytesTotal += vch.size())
{
if (op >= OP_1 && op <= OP_16)
{
vch.resize(1);
vch[0] = (op - OP_1) + 1;
}
vData.push_back(vch);
}
@@ -49,13 +59,13 @@ bool UnpackStakeOpRet(const CTransaction &stakeTx, std::vector<std::vector<unsig
return false;
}
CStakeParams::CStakeParams(std::vector<std::vector<unsigned char>> vData)
CStakeParams::CStakeParams(const std::vector<std::vector<unsigned char>> &vData)
{
// A stake OP_RETURN contains:
// 1. source block height in little endian 32 bit
// 2. target block height in little endian 32 bit
// 3. 32 byte prev block hash
// 4. alternate 20 byte pubkey hash, 33 byte pubkey, or not present to use same as stake destination
// 4. 33 byte pubkey, or not present to use same as stake destination
srcHeight = 0;
blkHeight = 0;
@@ -65,13 +75,13 @@ CStakeParams::CStakeParams(std::vector<std::vector<unsigned char>> vData)
vData[3].size() == sizeof(prevHash) &&
(vData.size() == STAKE_MINPARAMS || (vData.size() == STAKE_MAXPARAMS && vData[4].size() == 33)))
{
for (auto ch : vData[1])
for (int i = 0, size = vData[1].size(); i < size; i++)
{
srcHeight = srcHeight << 8 | ch;
srcHeight = srcHeight | vData[1][i] << (8 * i);
}
for (auto ch : vData[2])
for (int i = 0, size = vData[2].size(); i < size; i++)
{
blkHeight = blkHeight << 8 | ch;
blkHeight = blkHeight | vData[2][i] << (8 * i);
}
prevHash = uint256(vData[3]);
@@ -101,6 +111,8 @@ bool GetStakeParams(const CTransaction &stakeTx, CStakeParams &stakeParams)
{
std::vector<std::vector<unsigned char>> vData = std::vector<std::vector<unsigned char>>();
//printf("opret stake script: %s\nvalue at scriptPubKey[0]: %x\n", stakeTx.vout[1].scriptPubKey.ToString().c_str(), stakeTx.vout[1].scriptPubKey[0]);
if (stakeTx.vin.size() == 1 &&
stakeTx.vout.size() == 2 &&
stakeTx.vout[0].nValue > 0 &&
@@ -108,7 +120,7 @@ bool GetStakeParams(const CTransaction &stakeTx, CStakeParams &stakeParams)
UnpackStakeOpRet(stakeTx, vData))
{
stakeParams = CStakeParams(vData);
return true;
return stakeParams.IsValid();
}
return false;
}
@@ -151,8 +163,9 @@ bool ValidateStakeTransaction(const CTransaction &stakeTx, CStakeParams &stakePa
auto consensusBranchId = CurrentEpochBranchId(stakeParams.blkHeight, Params().GetConsensus());
if (VerifyScript(stakeTx.vin[0].scriptSig,
srcTx.vout[stakeTx.vin[0].prevout.n].scriptPubKey,
STANDARD_SCRIPT_VERIFY_FLAGS + SCRIPT_VERIFY_SIGPUSHONLY,
BaseSignatureChecker(),
MANDATORY_SCRIPT_VERIFY_FLAGS,
TransactionSignatureChecker(&stakeTx, 0, srcTx.vout[stakeTx.vin[0].prevout.n].nValue,
PrecomputedTransactionData(stakeTx)),
consensusBranchId))
{
return true;