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Recognize pegout scripts

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This commit is contained in:
Steven Roose 2018-12-12 11:56:37 +01:00
parent 4688e3eb8e
commit 7bb9380260
2 changed files with 53 additions and 0 deletions
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43
src/script/script.cpp
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@ -194,6 +194,49 @@ unsigned int CScript::GetSigOpCount(const CScript& scriptSig) const
return subscript.GetSigOpCount(true);
}
//
// ELEMENTS:
bool CScript::IsPegoutScript(uint256& genesis_hash, CScript& pegout_scriptpubkey) const
{
const_iterator pc = begin();
std::vector<unsigned char> data;
opcodetype opcode;
// OP_RETURN
if (!GetOp(pc, opcode, data) || opcode != OP_RETURN) {
return false;
}
if (!GetOp(pc, opcode, data) || data.size() != 32 ) {
return false;
}
genesis_hash = uint256(data);
// Read in parent chain destination scriptpubkey
if (!GetOp(pc, opcode, data) || data.size() == 0 ) {
return false;
}
pegout_scriptpubkey = CScript(data.begin(), data.end());
return true;
}
bool CScript::IsPegoutScript(const uint256& genesis_hash_check) const
{
uint256 genesis_hash;
CScript pegout_scriptpubkey;
// Ensure hash matches parent chain genesis block
if (this->IsPegoutScript(genesis_hash, pegout_scriptpubkey) &&
genesis_hash_check == genesis_hash) {
return true;
}
return false;
}
// END ELEMENTS
//
bool CScript::IsPayToScriptHash() const
{
// Extra-fast test for pay-to-script-hash CScripts: