diff options
Diffstat (limited to 'src/script/script.cpp')
| -rw-r--r-- | src/script/script.cpp | 67 |
1 files changed, 58 insertions, 9 deletions
diff --git a/src/script/script.cpp b/src/script/script.cpp index 9c77ed9fc..a10b619f7 100644 --- a/src/script/script.cpp +++ b/src/script/script.cpp @@ -1,5 +1,5 @@ // Copyright (c) 2009-2010 Satoshi Nakamoto -// Copyright (c) 2009-2014 The Bitcoin Core developers +// Copyright (c) 2009-2016 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. @@ -8,8 +8,6 @@ #include "tinyformat.h" #include "utilstrencodings.h" -using namespace std; - const char* GetOpName(opcodetype opcode) { switch (opcode) @@ -129,10 +127,10 @@ const char* GetOpName(opcodetype opcode) case OP_CHECKMULTISIG : return "OP_CHECKMULTISIG"; case OP_CHECKMULTISIGVERIFY : return "OP_CHECKMULTISIGVERIFY"; - // expanson + // expansion case OP_NOP1 : return "OP_NOP1"; - case OP_NOP2 : return "OP_NOP2"; - case OP_NOP3 : return "OP_NOP3"; + case OP_CHECKLOCKTIMEVERIFY : return "OP_CHECKLOCKTIMEVERIFY"; + case OP_CHECKSEQUENCEVERIFY : return "OP_CHECKSEQUENCEVERIFY"; case OP_NOP4 : return "OP_NOP4"; case OP_NOP5 : return "OP_NOP5"; case OP_NOP6 : return "OP_NOP6"; @@ -186,18 +184,18 @@ unsigned int CScript::GetSigOpCount(const CScript& scriptSig) const // get the last item that the scriptSig // pushes onto the stack: const_iterator pc = scriptSig.begin(); - vector<unsigned char> data; + std::vector<unsigned char> vData; while (pc < scriptSig.end()) { opcodetype opcode; - if (!scriptSig.GetOp(pc, opcode, data)) + if (!scriptSig.GetOp(pc, opcode, vData)) return 0; if (opcode > OP_16) return 0; } /// ... and return its opcount: - CScript subscript(data.begin(), data.end()); + CScript subscript(vData.begin(), vData.end()); return subscript.GetSigOpCount(true); } @@ -210,6 +208,32 @@ bool CScript::IsPayToScriptHash() const (*this)[22] == OP_EQUAL); } +bool CScript::IsPayToWitnessScriptHash() const +{ + // Extra-fast test for pay-to-witness-script-hash CScripts: + return (this->size() == 34 && + (*this)[0] == OP_0 && + (*this)[1] == 0x20); +} + +// A witness program is any valid CScript that consists of a 1-byte push opcode +// followed by a data push between 2 and 40 bytes. +bool CScript::IsWitnessProgram(int& version, std::vector<unsigned char>& program) const +{ + if (this->size() < 4 || this->size() > 42) { + return false; + } + if ((*this)[0] != OP_0 && ((*this)[0] < OP_1 || (*this)[0] > OP_16)) { + return false; + } + if ((size_t)((*this)[1] + 2) == this->size()) { + version = DecodeOP_N((opcodetype)(*this)[0]); + program = std::vector<unsigned char>(this->begin() + 2, this->end()); + return true; + } + return false; +} + bool CScript::IsPushOnly(const_iterator pc) const { while (pc < end()) @@ -231,3 +255,28 @@ bool CScript::IsPushOnly() const { return this->IsPushOnly(begin()); } + +std::string CScriptWitness::ToString() const +{ + std::string ret = "CScriptWitness("; + for (unsigned int i = 0; i < stack.size(); i++) { + if (i) { + ret += ", "; + } + ret += HexStr(stack[i]); + } + return ret + ")"; +} + +bool CScript::HasValidOps() const +{ + CScript::const_iterator it = begin(); + while (it < end()) { + opcodetype opcode; + std::vector<unsigned char> item; + if (!GetOp(it, opcode, item) || opcode > MAX_OPCODE || item.size() > MAX_SCRIPT_ELEMENT_SIZE) { + return false; + } + } + return true; +} |