LBRYCommunity/lbrycrd
1
0
Fork 0
Code Issues 29 Pull requests 1 Projects Releases 32 Packages Wiki Activity

Use block times for 'hard' OP_EVAL switchover, and refactored EvalScript

Browse source 
so it takes a flag for how to interpret OP_EVAL.
Also increased IsStandard size of scriptSigs to 500 bytes, so
a 3-of-3 multisig transaction IsStandard.
This commit is contained in:
Gavin Andresen 2011-11-08 13:20:29 -05:00
parent a0871afb2b
commit 2a45a494b0
14 changed files with 178 additions and 178 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/bitcoinrpc.cpp
View file

@ -1674,10 +1674,10 @@ Value validateaddress(const Array& params, bool fHelp)
pwalletMain->GetCScript(address.GetHash160(), subscript);
ret.push_back(Pair("ismine", ::IsMine(*pwalletMain, subscript)));
std::vector<CBitcoinAddress> addresses;
txntype whichType;
txnouttype whichType;
int nRequired;
ExtractAddresses(subscript, pwalletMain, whichType, addresses, nRequired);
ret.push_back(Pair("script", GetTxnTypeName(whichType)));
ret.push_back(Pair("script", GetTxnOutputType(whichType)));
Array a;
BOOST_FOREACH(const CBitcoinAddress& addr, addresses)
a.push_back(addr.ToString());

2
src/db.cpp
View file

@ -938,7 +938,7 @@ int CWalletDB::LoadWallet(CWallet* pwallet)
{
uint160 hash;
ssKey >> hash;
std::vector<unsigned char> script;
CScript script;
ssValue >> script;
if (!pwallet->LoadCScript(hash, script))
return DB_CORRUPT;

27
src/db.h
View file

@ -13,17 +13,17 @@
#include <db_cxx.h>
class CTxIndex;
class CDiskBlockIndex;
class CDiskTxPos;
class COutPoint;
class CAddress;
class CWalletTx;
class CWallet;
class CAccount;
class CAccountingEntry;
class CAddress;
class CBlockLocator;
class CDiskBlockIndex;
class CDiskTxPos;
class CMasterKey;
class COutPoint;
class CTxIndex;
class CWallet;
class CWalletTx;
extern unsigned int nWalletDBUpdated;
extern DbEnv dbenv;
@ -420,16 +420,17 @@ public:
return Write(std::make_pair(std::string("mkey"), nID), kMasterKey, true);
}
bool ReadCScript(const uint160 &hash, std::vector<unsigned char>& data)
// Support for BIP 0013 : see https://en.bitcoin.it/wiki/BIP_0013
bool ReadCScript(const uint160 &hash, CScript& redeemScript)
{
data.clear();
return Read(std::make_pair(std::string("cscript"), hash), data);
redeemScript.clear();
return Read(std::make_pair(std::string("cscript"), hash), redeemScript);
}
bool WriteCScript(const uint160& hash, const std::vector<unsigned char>& data)
bool WriteCScript(const uint160& hash, const CScript& redeemScript)
{
nWalletDBUpdated++;
return Write(std::make_pair(std::string("cscript"), hash), data, false);
return Write(std::make_pair(std::string("cscript"), hash), redeemScript, false);
}
bool WriteBestBlock(const CBlockLocator& locator)

17
src/keystore.cpp
View file

@ -4,8 +4,9 @@
// file license.txt or http://www.opensource.org/licenses/mit-license.php.
#include "headers.h"
#include "db.h"
#include "crypter.h"
#include "db.h"
#include "script.h"
std::vector<unsigned char> CKeyStore::GenerateNewKey()
{
@ -33,10 +34,10 @@ bool CBasicKeyStore::AddKey(const CKey& key)
return true;
}
bool CBasicKeyStore::AddCScript(const uint160 &hash, const std::vector<unsigned char>& data)
bool CBasicKeyStore::AddCScript(const uint160 &hash, const CScript& redeemScript)
{
CRITICAL_BLOCK(cs_KeyStore)
mapData[hash] = data;
mapScripts[hash] = redeemScript;
return true;
}
@ -44,19 +45,19 @@ bool CBasicKeyStore::HaveCScript(const uint160& hash) const
{
bool result;
CRITICAL_BLOCK(cs_KeyStore)
result = (mapData.count(hash) > 0);
result = (mapScripts.count(hash) > 0);
return result;
}
bool CBasicKeyStore::GetCScript(const uint160 &hash, std::vector<unsigned char>& dataOut) const
bool CBasicKeyStore::GetCScript(const uint160 &hash, CScript& redeemScriptOut) const
{
CRITICAL_BLOCK(cs_KeyStore)
{
DataMap::const_iterator mi = mapData.find(hash);
if (mi != mapData.end())
ScriptMap::const_iterator mi = mapScripts.find(hash);
if (mi != mapScripts.end())
{
dataOut = (*mi).second;
redeemScriptOut = (*mi).second;
return true;
}
}

14
src/keystore.h
View file

@ -6,6 +6,7 @@
#define BITCOIN_KEYSTORE_H
#include "crypter.h"
#include "script.h"
// A virtual base class for key stores
class CKeyStore
@ -31,9 +32,10 @@ public:
virtual void GetKeys(std::set<CBitcoinAddress> &setAddress) const =0;
virtual bool GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const;
virtual bool AddCScript(const uint160 &hash, const std::vector<unsigned char>& data) =0;
// Support for BIP 0013 : see https://en.bitcoin.it/wiki/BIP_0013
virtual bool AddCScript(const uint160 &hash, const CScript& redeemScript) =0;
virtual bool HaveCScript(const uint160 &hash) const =0;
virtual bool GetCScript(const uint160 &hash, std::vector<unsigned char>& dataOut) const =0;
virtual bool GetCScript(const uint160 &hash, CScript& redeemScriptOut) const =0;
// Generate a new key, and add it to the store
virtual std::vector<unsigned char> GenerateNewKey();
@ -48,14 +50,14 @@ public:
};
typedef std::map<CBitcoinAddress, CSecret> KeyMap;
typedef std::map<uint160, std::vector<unsigned char> > DataMap;
typedef std::map<uint160, CScript > ScriptMap;
// Basic key store, that keeps keys in an address->secret map
class CBasicKeyStore : public CKeyStore
{
protected:
KeyMap mapKeys;
DataMap mapData;
ScriptMap mapScripts;
public:
bool AddKey(const CKey& key);
@ -92,9 +94,9 @@ public:
}
return false;
}
virtual bool AddCScript(const uint160 &hash, const std::vector<unsigned char>& data);
virtual bool AddCScript(const uint160 &hash, const CScript& redeemScript);
virtual bool HaveCScript(const uint160 &hash) const;
virtual bool GetCScript(const uint160 &hash, std::vector<unsigned char>& dataOut) const;
virtual bool GetCScript(const uint160 &hash, CScript& redeemScriptOut) const;
};
typedef std::map<CBitcoinAddress, std::pair<std::vector<unsigned char>, std::vector<unsigned char> > > CryptedKeyMap;

52
src/main.cpp
View file

@ -250,13 +250,13 @@ bool CTransaction::IsStandard() const
{
BOOST_FOREACH(const CTxIn& txin, vin)
{
// Biggest 'standard' txin is a 2-signature 2-of-3 escrow
// in an OP_EVAL, which is 2 ~80-byte signatures, 3
// Biggest 'standard' txin is a 3-signature 3-of-3 CHECKMULTISIG
// in an OP_EVAL, which is 3 ~80-byte signatures, 3
// ~65-byte public keys, plus a few script ops.
if (txin.scriptSig.size() > 400)
return error("nonstandard txin, size %d\n", txin.scriptSig.size());
if (txin.scriptSig.size() > 500)
return error("nonstandard txin, size %d is too large\n", txin.scriptSig.size());
if (!txin.scriptSig.IsPushOnly())
return error("nonstandard txin: %s", txin.scriptSig.ToString().c_str());
return error("nonstandard txin (opcodes other than PUSH): %s", txin.scriptSig.ToString().c_str());
}
BOOST_FOREACH(const CTxOut& txout, vout)
if (!::IsStandard(txout.scriptPubKey))
@ -275,7 +275,7 @@ bool CTransaction::IsStandard() const
// expensive-to-check-upon-redemption script like:
// DUP CHECKSIG DROP ... repeated 100 times... OP_1
//
bool CTransaction::IsStandardInputs(std::map<uint256, std::pair<CTxIndex, CTransaction> > mapInputs) const
bool CTransaction::AreInputsStandard(std::map<uint256, std::pair<CTxIndex, CTransaction> > mapInputs) const
{
if (fTestNet)
return true; // Allow non-standard on testnet
@ -287,18 +287,20 @@ bool CTransaction::IsStandardInputs(std::map<uint256, std::pair<CTxIndex, CTrans
CTransaction& txPrev = mapInputs[prevout.hash].second;
vector<vector<unsigned char> > vSolutions;
txntype whichType;
if (!Solver(txPrev.vout[vin[i].prevout.n].scriptPubKey, whichType, vSolutions))
return false;
txnouttype whichType;
// get the scriptPubKey corresponding to this input:
CScript& prevScript = txPrev.vout[prevout.n].scriptPubKey;
if (!Solver(prevScript, whichType, vSolutions))
return error("nonstandard txin (spending nonstandard txout %s)", prevScript.ToString().c_str());
if (whichType == TX_SCRIPTHASH)
{
vector<vector<unsigned char> > stack;
int nUnused;
if (!EvalScript(stack, vin[i].scriptSig, *this, i, 0, nUnused))
return false;
const vector<unsigned char>& subscript = stack.back();
if (!::IsStandard(CScript(subscript.begin(), subscript.end())))
if (!EvalScript(stack, vin[i].scriptSig, *this, i, 0, true, nUnused))
return false;
CScript subscript(stack.back().begin(), stack.back().end());
if (!::IsStandard(subscript))
return error("nonstandard txin (nonstandard OP_EVAL subscript %s)", subscript.ToString().c_str());
}
}
@ -481,7 +483,7 @@ bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMi
}
// Check for non-standard OP_EVALs in inputs
if (!IsStandardInputs(mapInputs))
if (!AreInputsStandard(mapInputs))
return error("AcceptToMemoryPool() : nonstandard transaction input");
// Check against previous transactions
@ -978,9 +980,27 @@ bool CTransaction::ConnectInputs(map<uint256, pair<CTxIndex, CTransaction> > inp
// (before the last blockchain checkpoint). This is safe because block merkle hashes are
// still computed and checked, and any change will be caught at the next checkpoint.
if (!(fBlock && IsInitialBlockDownload()))
{
bool fStrictOpEval = true;
// This code should be removed when OP_EVAL has
// a majority of hashing power on the network.
if (fBlock)
{
// To avoid being on the short end of a block-chain split,
// interpret OP_EVAL as a NO_OP until blocks with timestamps
// after opevaltime:
int64 nEvalSwitchTime = GetArg("opevaltime", 1328054400); // Feb 1, 2012
fStrictOpEval = (pindexBlock->nTime >= nEvalSwitchTime);
}
// if !fBlock, then always be strict-- don't accept
// invalid-under-new-rules OP_EVAL transactions into
// our memory pool (don't relay them, don't include them
// in blocks we mine).
// Verify signature
if (!VerifySignature(txPrev, *this, i, nSigOpsRet))
if (!VerifySignature(txPrev, *this, i, nSigOpsRet, fStrictOpEval))
return DoS(100,error("ConnectInputs() : %s VerifySignature failed", GetHash().ToString().substr(0,10).c_str()));
}
// Check for conflicts (double-spend)
// This doesn't trigger the DoS code on purpose; if it did, it would make it easier
@ -1054,7 +1074,7 @@ bool CTransaction::ClientConnectInputs()
// Verify signature
int nUnused = 0;
if (!VerifySignature(txPrev, *this, i, nUnused))
if (!VerifySignature(txPrev, *this, i, nUnused, false))
return error("ConnectInputs() : VerifySignature failed");
///// this is redundant with the mapNextTx stuff, not sure which I want to get rid of

4
src/main.h
View file

@ -494,7 +494,7 @@ public:
}
bool IsStandard() const;
bool IsStandardInputs(std::map<uint256, std::pair<CTxIndex, CTransaction> > mapInputs) const;
bool AreInputsStandard(std::map<uint256, std::pair<CTxIndex, CTransaction> > mapInputs) const;
int64 GetValueOut() const
{
@ -622,6 +622,8 @@ public:
bool ReadFromDisk(CTxDB& txdb, COutPoint prevout);
bool ReadFromDisk(COutPoint prevout);
bool DisconnectInputs(CTxDB& txdb);
// Fetch from memory and/or disk. inputsRet keys are transaction hashes.
bool FetchInputs(CTxDB& txdb, const std::map<uint256, CTxIndex>& mapTestPool,
bool fBlock, bool fMiner, std::map<uint256, std::pair<CTxIndex, CTransaction> >& inputsRet);
bool ConnectInputs(std::map<uint256, std::pair<CTxIndex, CTransaction> > inputs,

95
src/script.cpp
View file

@ -70,7 +70,7 @@ static inline void popstack(vector<valtype>& stack)
}
const char* GetTxnTypeName(txntype t)
const char* GetTxnOutputType(txnouttype t)
{
switch (t)
{
@ -230,12 +230,12 @@ const char* GetOpName(opcodetype opcode)
}
}
//
// Returns true if script is valid.
//
bool EvalScriptInner(vector<vector<unsigned char> >& stack, const CScript& script, const CTransaction& txTo, unsigned int nIn, int nHashType,
CScript::const_iterator pbegincodehash, CScript::const_iterator pendcodehash, int& nOpCount, int& nSigOpCount, int nRecurseDepth)
CScript::const_iterator pbegincodehash, CScript::const_iterator pendcodehash, int& nOpCount, int& nSigOpCount,
bool fStrictOpEval, int nRecurseDepth)
{
CAutoBN_CTX pctx;
CScript::const_iterator pc = script.begin();
@ -1014,17 +1014,9 @@ bool EvalScriptInner(vector<vector<unsigned char> >& stack, const CScript& scrip
case OP_EVAL:
{
// This code should be removed when OP_EVAL has
// a majority of hashing power on the network.
// OP_EVAL behaves just like OP_NOP until
// opevaltime :
if (!fTestNet || fDebug)
{
// 1328054400 is Feb 1, 2012
int64 nEvalSwitchTime = GetArg("opevaltime", 1328054400);
if (GetTime() < nEvalSwitchTime)
break;
}
if (!fStrictOpEval)
break; // Act as a NO_OP
// Evaluate the top item on the stack as a Script
// [serialized script ] -- [result(s) of executing script]
@ -1034,12 +1026,14 @@ bool EvalScriptInner(vector<vector<unsigned char> >& stack, const CScript& scrip
CScript subscript(vchScript.begin(), vchScript.end());
popstack(stack);
// Codeseparators not allowed
// Codeseparators not allowed; they don't make sense 'inside' an OP_EVAL, because
// their purpose is to change which parts of the scriptPubKey script is copied
// and signed by OP_CHECKSIG, but OP_EVAl'ed code is in the scriptSig, not the scriptPubKey.
if (subscript.Find(OP_CODESEPARATOR))
return false;
if (!EvalScriptInner(stack, subscript, txTo, nIn, nHashType,
pbegincodehash, pendcodehash, nOpCount, nSigOpCount, nRecurseDepth++))
pbegincodehash, pendcodehash, nOpCount, nSigOpCount, fStrictOpEval, nRecurseDepth++))
return false;
}
break;
@ -1066,14 +1060,15 @@ bool EvalScriptInner(vector<vector<unsigned char> >& stack, const CScript& scrip
}
bool EvalScript(vector<vector<unsigned char> >& stack, const CScript& script,
const CTransaction& txTo, unsigned int nIn, int nHashType, int& nSigOpCountRet)
const CTransaction& txTo, unsigned int nIn, int nHashType,
bool fStrictOpEval, int& nSigOpCountRet)
{
CScript::const_iterator pbegincodehash = script.begin();
CScript::const_iterator pendcodehash = script.end();
int nOpCount = 0;
return EvalScriptInner(stack, script, txTo, nIn, nHashType, pbegincodehash, pendcodehash,
nOpCount, nSigOpCountRet, 0);
nOpCount, nSigOpCountRet, fStrictOpEval, 0);
}
@ -1177,10 +1172,10 @@ bool CheckSig(vector<unsigned char> vchSig, vector<unsigned char> vchPubKey, CSc
//
// Return public keys or hashes from scriptPubKey, for 'standard' transaction types.
//
bool Solver(const CScript& scriptPubKey, txntype& typeRet, vector<vector<unsigned char> >& vSolutionsRet)
bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, vector<vector<unsigned char> >& vSolutionsRet)
{
// Templates
static map<txntype, CScript> mTemplates;
static map<txnouttype, CScript> mTemplates;
if (mTemplates.empty())
{
// Standard tx, sender provides pubkey, receiver adds signature
@ -1199,7 +1194,7 @@ bool Solver(const CScript& scriptPubKey, txntype& typeRet, vector<vector<unsigne
// Scan templates
const CScript& script1 = scriptPubKey;
BOOST_FOREACH(const PAIRTYPE(txntype, CScript)& tplate, mTemplates)
BOOST_FOREACH(const PAIRTYPE(txnouttype, CScript)& tplate, mTemplates)
{
const CScript& script2 = tplate.second;
vSolutionsRet.clear();
@ -1331,13 +1326,13 @@ bool Solver(const CKeyStore& keystore, const CScript& scriptPubKey, uint256 hash
{
scriptSigRet.clear();
txntype whichType;
txnouttype whichType;
vector<valtype> vSolutions;
if (!Solver(scriptPubKey, whichType, vSolutions))
return false;
CBitcoinAddress address;
valtype subscript;
CScript subscript;
switch (whichType)
{
case TX_NONSTANDARD:
@ -1359,10 +1354,11 @@ bool Solver(const CKeyStore& keystore, const CScript& scriptPubKey, uint256 hash
case TX_SCRIPTHASH:
if (!keystore.GetCScript(uint160(vSolutions[0]), subscript))
return false;
if (!Solver(keystore, CScript(subscript.begin(), subscript.end()), hash, nHashType, scriptSigRet))
if (!Solver(keystore, subscript, hash, nHashType, scriptSigRet))
return false;
if (hash != 0)
scriptSigRet << subscript; // signatures AND serialized script
// static_cast to get vector.operator<< instead of CScript.operator<<
scriptSigRet << static_cast<valtype>(subscript); // signatures AND serialized script
break;
case TX_MULTISIG:
scriptSigRet << OP_0; // workaround CHECKMULTISIG bug
@ -1375,7 +1371,7 @@ bool Solver(const CKeyStore& keystore, const CScript& scriptPubKey, uint256 hash
bool IsStandard(const CScript& scriptPubKey)
{
vector<valtype> vSolutions;
txntype whichType;
txnouttype whichType;
if (!Solver(scriptPubKey, whichType, vSolutions))
return false;
@ -1410,7 +1406,7 @@ int HaveKeys(const vector<valtype>& pubkeys, const CKeyStore& keystore)
bool IsMine(const CKeyStore &keystore, const CScript& scriptPubKey)
{
vector<valtype> vSolutions;
txntype whichType;
txnouttype whichType;
if (!Solver(scriptPubKey, whichType, vSolutions))
return false;
@ -1427,10 +1423,10 @@ bool IsMine(const CKeyStore &keystore, const CScript& scriptPubKey)
return keystore.HaveKey(address);
case TX_SCRIPTHASH:
{
valtype subscript;
CScript subscript;
if (!keystore.GetCScript(uint160(vSolutions[0]), subscript))
return false;
return IsMine(keystore, CScript(subscript.begin(), subscript.end()));
return IsMine(keystore, subscript);
}
case TX_MULTISIG:
{
@ -1449,7 +1445,7 @@ bool IsMine(const CKeyStore &keystore, const CScript& scriptPubKey)
bool ExtractAddress(const CScript& scriptPubKey, const CKeyStore* keystore, CBitcoinAddress& addressRet)
{
vector<valtype> vSolutions;
txntype whichType;
txnouttype whichType;
if (!Solver(scriptPubKey, whichType, vSolutions))
return false;
@ -1472,7 +1468,7 @@ bool ExtractAddress(const CScript& scriptPubKey, const CKeyStore* keystore, CBit
return false;
}
bool ExtractAddresses(const CScript& scriptPubKey, const CKeyStore* keystore, txntype& typeRet, vector<CBitcoinAddress>& addressRet, int& nRequiredRet)
bool ExtractAddresses(const CScript& scriptPubKey, const CKeyStore* keystore, txnouttype& typeRet, vector<CBitcoinAddress>& addressRet, int& nRequiredRet)
{
addressRet.clear();
typeRet = TX_NONSTANDARD;
@ -1484,10 +1480,10 @@ bool ExtractAddresses(const CScript& scriptPubKey, const CKeyStore* keystore, tx
{
nRequiredRet = vSolutions.front()[0];
int n = vSolutions.back()[0];
for (vector<valtype>::const_iterator it = vSolutions.begin()+1; it != vSolutions.begin()+vSolutions.size()-1; it++)
for (int i = 1; i < vSolutions.size()-1; i++)
{
CBitcoinAddress address;
address.SetPubKey(*it);
address.SetPubKey(vSolutions[i]);
addressRet.push_back(address);
}
}
@ -1507,12 +1503,13 @@ bool ExtractAddresses(const CScript& scriptPubKey, const CKeyStore* keystore, tx
return true;
}
bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int& nSigOpCountRet, int nHashType)
bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int& nSigOpCountRet,
int nHashType, bool fStrictOpEval)
{
vector<vector<unsigned char> > stack;
if (!EvalScript(stack, scriptSig, txTo, nIn, nHashType, nSigOpCountRet))
if (!EvalScript(stack, scriptSig, txTo, nIn, nHashType, fStrictOpEval, nSigOpCountRet))
return false;
if (!EvalScript(stack, scriptPubKey, txTo, nIn, nHashType, nSigOpCountRet))
if (!EvalScript(stack, scriptPubKey, txTo, nIn, nHashType, fStrictOpEval, nSigOpCountRet))
return false;
if (stack.empty())
return false;
@ -1521,24 +1518,8 @@ bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const C
// This code should be removed when a compatibility-breaking block chain split has passed.
// Special check for OP_EVAL backwards-compatibility: if scriptPubKey or scriptSig contains
// OP_EVAL, then result must be identical if OP_EVAL is treated as a no-op:
if (scriptSig.Find(OP_EVAL)+scriptPubKey.Find(OP_EVAL) > 0)
{
int nUnused = 0;
stack.clear();
CScript sigCopy = scriptSig;
sigCopy.FindAndDelete(CScript(OP_EVAL));
CScript pubKeyCopy = scriptPubKey;
pubKeyCopy.FindAndDelete(CScript(OP_EVAL));
if (!EvalScript(stack, sigCopy, txTo, nIn, nHashType, nUnused))
return false;
if (!EvalScript(stack, pubKeyCopy, txTo, nIn, nHashType, nUnused))
return false;
if (stack.empty())
return false;
if (fResult != CastToBool(stack.back()))
return false;
}
if (fResult && fStrictOpEval && (scriptPubKey.Find(OP_EVAL) || scriptSig.Find(OP_EVAL)))
return VerifyScript(scriptSig, scriptPubKey, txTo, nIn, nSigOpCountRet, nHashType, false);
return fResult;
}
@ -1563,14 +1544,14 @@ bool SignSignature(const CKeyStore &keystore, const CTransaction& txFrom, CTrans
// Test solution
int nUnused = 0;
if (scriptPrereq.empty())
if (!VerifyScript(txin.scriptSig, txout.scriptPubKey, txTo, nIn, nUnused, 0))
if (!VerifyScript(txin.scriptSig, txout.scriptPubKey, txTo, nIn, nUnused, 0, true))
return false;
return true;
}
bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, int& nSigOpCountRet, int nHashType)
bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, int& nSigOpCountRet, int nHashType, bool fStrictOpEval)
{
assert(nIn < txTo.vin.size());
const CTxIn& txin = txTo.vin[nIn];
@ -1581,7 +1562,7 @@ bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsig
if (txin.prevout.hash != txFrom.GetHash())
return false;
if (!VerifyScript(txin.scriptSig, txout.scriptPubKey, txTo, nIn, nSigOpCountRet, nHashType))
if (!VerifyScript(txin.scriptSig, txout.scriptPubKey, txTo, nIn, nSigOpCountRet, nHashType, fStrictOpEval))
return false;
return true;

14
src/script.h
View file

@ -6,7 +6,6 @@
#define H_BITCOIN_SCRIPT
#include "base58.h"
#include "keystore.h"
#include <string>
#include <vector>
@ -14,6 +13,7 @@
#include <boost/foreach.hpp>
class CTransaction;
class CKeyStore;
enum
{
@ -24,7 +24,7 @@ enum
};
enum txntype
enum txnouttype
{
TX_NONSTANDARD,
// 'standard' transaction types:
@ -34,7 +34,7 @@ enum txntype
TX_MULTISIG,
};
const char* GetTxnTypeName(txntype t);
const char* GetTxnOutputType(txnouttype t);
enum opcodetype
{
@ -567,14 +567,14 @@ public:
bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, const CTransaction& txTo, unsigned int nIn, int nHashType, int& nSigOpCountRet);
bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, const CTransaction& txTo, unsigned int nIn, int nHashType, bool fStrictOpEval, int& nSigOpCountRet);
bool Solver(const CScript& scriptPubKey, txntype& typeRet, std::vector<std::vector<unsigned char> >& vSolutionsRet);
bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<std::vector<unsigned char> >& vSolutionsRet);
bool IsStandard(const CScript& scriptPubKey);
bool IsMine(const CKeyStore& keystore, const CScript& scriptPubKey);
bool ExtractAddress(const CScript& scriptPubKey, const CKeyStore* pkeystore, CBitcoinAddress& addressRet);
bool ExtractAddresses(const CScript& scriptPubKey, const CKeyStore* pkeystore, txntype& typeRet, std::vector<CBitcoinAddress>& addressRet, int& nRequiredRet);
bool ExtractAddresses(const CScript& scriptPubKey, const CKeyStore* pkeystore, txnouttype& typeRet, std::vector<CBitcoinAddress>& addressRet, int& nRequiredRet);
bool SignSignature(const CKeyStore& keystore, const CTransaction& txFrom, CTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL, CScript scriptPrereq=CScript());
bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, int& nSigOpCountRet, int nHashType=0);
bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, int& nSigOpCountRet, int nHashType=0, bool fStrictOpEval=true);
#endif

31
src/test/multisig_tests.cpp
View file

@ -20,7 +20,8 @@ using namespace boost::assign;
typedef vector<unsigned char> valtype;
extern uint256 SignatureHash(CScript scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType);
extern bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int& nSigOpCount, int nHashType);
extern bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int& nSigOpCount,
int nHashType, bool fStrictOpEval);
BOOST_AUTO_TEST_SUITE(multisig_tests)
@ -80,19 +81,19 @@ BOOST_AUTO_TEST_CASE(multisig_verify)
keys.clear();
keys += key[0],key[1]; // magic operator+= from boost.assign
s = sign_multisig(a_and_b, keys, txTo[0], 0);
BOOST_CHECK(VerifyScript(s, a_and_b, txTo[0], 0, nUnused, 0));
BOOST_CHECK(VerifyScript(s, a_and_b, txTo[0], 0, nUnused, 0, true));
for (int i = 0; i < 4; i++)
{
keys.clear();
keys += key[i];
s = sign_multisig(a_and_b, keys, txTo[0], 0);
BOOST_CHECK_MESSAGE(!VerifyScript(s, a_and_b, txTo[0], 0, nUnused, 0), strprintf("a&b 1: %d", i));
BOOST_CHECK_MESSAGE(!VerifyScript(s, a_and_b, txTo[0], 0, nUnused, 0, true), strprintf("a&b 1: %d", i));
keys.clear();
keys += key[1],key[i];
s = sign_multisig(a_and_b, keys, txTo[0], 0);
BOOST_CHECK_MESSAGE(!VerifyScript(s, a_and_b, txTo[0], 0, nUnused, 0), strprintf("a&b 2: %d", i));
BOOST_CHECK_MESSAGE(!VerifyScript(s, a_and_b, txTo[0], 0, nUnused, 0, true), strprintf("a&b 2: %d", i));
}
// Test a OR b:
@ -102,16 +103,16 @@ BOOST_AUTO_TEST_CASE(multisig_verify)
keys += key[i];
s = sign_multisig(a_or_b, keys, txTo[1], 0);
if (i == 0 || i == 1)
BOOST_CHECK_MESSAGE(VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0), strprintf("a|b: %d", i));
BOOST_CHECK_MESSAGE(VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0, true), strprintf("a|b: %d", i));
else
BOOST_CHECK_MESSAGE(!VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0), strprintf("a|b: %d", i));
BOOST_CHECK_MESSAGE(!VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0, true), strprintf("a|b: %d", i));
}
s.clear();
s << OP_0 << OP_0;
BOOST_CHECK(!VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0));
BOOST_CHECK(!VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0, true));
s.clear();
s << OP_0 << OP_1;
BOOST_CHECK(!VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0));
BOOST_CHECK(!VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0, true));
for (int i = 0; i < 4; i++)
@ -121,9 +122,9 @@ BOOST_AUTO_TEST_CASE(multisig_verify)
keys += key[i],key[j];
s = sign_multisig(escrow, keys, txTo[2], 0);
if (i < j && i < 3 && j < 3)
BOOST_CHECK_MESSAGE(VerifyScript(s, escrow, txTo[2], 0, nUnused, 0), strprintf("escrow 1: %d %d", i, j));
BOOST_CHECK_MESSAGE(VerifyScript(s, escrow, txTo[2], 0, nUnused, 0, true), strprintf("escrow 1: %d %d", i, j));
else
BOOST_CHECK_MESSAGE(!VerifyScript(s, escrow, txTo[2], 0, nUnused, 0), strprintf("escrow 2: %d %d", i, j));
BOOST_CHECK_MESSAGE(!VerifyScript(s, escrow, txTo[2], 0, nUnused, 0, true), strprintf("escrow 2: %d %d", i, j));
}
}
@ -185,7 +186,7 @@ BOOST_AUTO_TEST_CASE(multisig_Solver1)
{
vector<valtype> solutions;
txntype whichType;
txnouttype whichType;
CScript s;
s << key[0].GetPubKey() << OP_CHECKSIG;
BOOST_CHECK(Solver(s, whichType, solutions));
@ -198,7 +199,7 @@ BOOST_AUTO_TEST_CASE(multisig_Solver1)
}
{
vector<valtype> solutions;
txntype whichType;
txnouttype whichType;
CScript s;
s << OP_DUP << OP_HASH160 << Hash160(key[0].GetPubKey()) << OP_EQUALVERIFY << OP_CHECKSIG;
BOOST_CHECK(Solver(s, whichType, solutions));
@ -211,7 +212,7 @@ BOOST_AUTO_TEST_CASE(multisig_Solver1)
}
{
vector<valtype> solutions;
txntype whichType;
txnouttype whichType;
CScript s;
s << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
BOOST_CHECK(Solver(s, whichType, solutions));
@ -223,7 +224,7 @@ BOOST_AUTO_TEST_CASE(multisig_Solver1)
}
{
vector<valtype> solutions;
txntype whichType;
txnouttype whichType;
CScript s;
s << OP_1 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
BOOST_CHECK(Solver(s, whichType, solutions));
@ -239,7 +240,7 @@ BOOST_AUTO_TEST_CASE(multisig_Solver1)
}
{
vector<valtype> solutions;
txntype whichType;
txnouttype whichType;
CScript s;
s << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << key[2].GetPubKey() << OP_3 << OP_CHECKMULTISIG;
BOOST_CHECK(Solver(s, whichType, solutions));

39
src/test/script_op_eval_tests.cpp
View file

@ -13,24 +13,10 @@ using namespace std;
// Test routines internal to script.cpp:
extern uint256 SignatureHash(CScript scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType);
extern bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int& nSigOps, int nHashType);
extern bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int& nSigOps,
int nHashType, bool fStrictOpEval);
static const int64 nEvalSwitchover = 1328054400;
struct CEvalFixture {
CEvalFixture()
{
// Set mock time to AFTER OP_EVAL deployed
SetMockTime(nEvalSwitchover+1);
}
~CEvalFixture()
{
// Reset back to use-real-time
SetMockTime(0);
}
};
BOOST_FIXTURE_TEST_SUITE(script_op_eval_tests, CEvalFixture)
BOOST_AUTO_TEST_SUITE(script_op_eval_tests)
BOOST_AUTO_TEST_CASE(script_op_eval1)
{
@ -130,8 +116,8 @@ BOOST_AUTO_TEST_CASE(script_op_eval2)
txTo.vout[0].nValue = 1;
int nUnused = 0;
BOOST_CHECK(!VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0));
BOOST_CHECK(!VerifySignature(txFrom, txTo, 0, nUnused));
BOOST_CHECK(!VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0, true));
BOOST_CHECK(!VerifySignature(txFrom, txTo, 0, nUnused, true));
}
BOOST_AUTO_TEST_CASE(script_op_eval3)
@ -212,13 +198,13 @@ BOOST_AUTO_TEST_CASE(script_op_eval_backcompat1)
txTo.vout[0].nValue = 1;
int nUnused = 0;
BOOST_CHECK(!VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0));
BOOST_CHECK(!VerifySignature(txFrom, txTo, 0, nUnused));
BOOST_CHECK(!VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0, true));
BOOST_CHECK(!VerifySignature(txFrom, txTo, 0, nUnused, true));
}
BOOST_AUTO_TEST_CASE(script_op_eval_switchover)
{
// Use SetMockTime to test OP_EVAL switchover code
// Test OP_EVAL switchover code
CScript notValid;
notValid << OP_11 << OP_12 << OP_EQUALVERIFY;
@ -238,14 +224,11 @@ BOOST_AUTO_TEST_CASE(script_op_eval_switchover)
txTo.vin[0].scriptSig = CScript() << static_cast<std::vector<unsigned char> >(notValid);
txTo.vout[0].nValue = 1;
SetMockTime(nEvalSwitchover-1);
int nUnused = 0;
BOOST_CHECK(VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0));
BOOST_CHECK(VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0, false));
// After eval switchover time, it should validate:
SetMockTime(nEvalSwitchover);
BOOST_CHECK(!VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0));
// Under strict op_eval switchover, it should be considered invalid:
BOOST_CHECK(!VerifyScript(txTo.vin[0].scriptSig, txFrom.vout[0].scriptPubKey, txTo, 0, nUnused, 0, true));
}
BOOST_AUTO_TEST_SUITE_END()

38
src/test/script_tests.cpp
View file

@ -7,8 +7,8 @@
using namespace std;
extern uint256 SignatureHash(CScript scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType);
extern bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int& nSigOps, int nHashType);
extern bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, int nHashType);
extern bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int& nSigOps,
int nHashType, bool fStrictOpEval);
BOOST_AUTO_TEST_SUITE(script_tests)
@ -24,18 +24,18 @@ BOOST_AUTO_TEST_CASE(script_PushData)
int nUnused = 0;
vector<vector<unsigned char> > directStack;
BOOST_CHECK(EvalScript(directStack, CScript(&direct[0], &direct[sizeof(direct)]), CTransaction(), 0, 0, nUnused));
BOOST_CHECK(EvalScript(directStack, CScript(&direct[0], &direct[sizeof(direct)]), CTransaction(), 0, 0, true, nUnused));
vector<vector<unsigned char> > pushdata1Stack;
BOOST_CHECK(EvalScript(pushdata1Stack, CScript(&pushdata1[0], &pushdata1[sizeof(pushdata1)]), CTransaction(), 0, 0, nUnused));
BOOST_CHECK(EvalScript(pushdata1Stack, CScript(&pushdata1[0], &pushdata1[sizeof(pushdata1)]), CTransaction(), 0, 0, true, nUnused));
BOOST_CHECK(pushdata1Stack == directStack);
vector<vector<unsigned char> > pushdata2Stack;
BOOST_CHECK(EvalScript(pushdata2Stack, CScript(&pushdata2[0], &pushdata2[sizeof(pushdata2)]), CTransaction(), 0, 0, nUnused));
BOOST_CHECK(EvalScript(pushdata2Stack, CScript(&pushdata2[0], &pushdata2[sizeof(pushdata2)]), CTransaction(), 0, 0, true, nUnused));
BOOST_CHECK(pushdata2Stack == directStack);
vector<vector<unsigned char> > pushdata4Stack;
BOOST_CHECK(EvalScript(pushdata4Stack, CScript(&pushdata4[0], &pushdata4[sizeof(pushdata4)]), CTransaction(), 0, 0, nUnused));
BOOST_CHECK(EvalScript(pushdata4Stack, CScript(&pushdata4[0], &pushdata4[sizeof(pushdata4)]), CTransaction(), 0, 0, true, nUnused));
BOOST_CHECK(pushdata4Stack == directStack);
}
@ -94,15 +94,15 @@ BOOST_AUTO_TEST_CASE(script_CHECKMULTISIG12)
txTo12.vout[0].nValue = 1;
CScript goodsig1 = sign_multisig(scriptPubKey12, key1, txTo12);
BOOST_CHECK(VerifyScript(goodsig1, scriptPubKey12, txTo12, 0, nUnused, 0));
BOOST_CHECK(VerifyScript(goodsig1, scriptPubKey12, txTo12, 0, nUnused, 0, true));
txTo12.vout[0].nValue = 2;
BOOST_CHECK(!VerifyScript(goodsig1, scriptPubKey12, txTo12, 0, nUnused, 0));
BOOST_CHECK(!VerifyScript(goodsig1, scriptPubKey12, txTo12, 0, nUnused, 0, true));
CScript goodsig2 = sign_multisig(scriptPubKey12, key2, txTo12);
BOOST_CHECK(VerifyScript(goodsig2, scriptPubKey12, txTo12, 0, nUnused, 0));
BOOST_CHECK(VerifyScript(goodsig2, scriptPubKey12, txTo12, 0, nUnused, 0, true));
CScript badsig1 = sign_multisig(scriptPubKey12, key3, txTo12);
BOOST_CHECK(!VerifyScript(badsig1, scriptPubKey12, txTo12, 0, nUnused, 0));
BOOST_CHECK(!VerifyScript(badsig1, scriptPubKey12, txTo12, 0, nUnused, 0, true));
}
BOOST_AUTO_TEST_CASE(script_CHECKMULTISIG23)
@ -131,46 +131,46 @@ BOOST_AUTO_TEST_CASE(script_CHECKMULTISIG23)
std::vector<CKey> keys;
keys.push_back(key1); keys.push_back(key2);
CScript goodsig1 = sign_multisig(scriptPubKey23, keys, txTo23);
BOOST_CHECK(VerifyScript(goodsig1, scriptPubKey23, txTo23, 0, nUnused, 0));
BOOST_CHECK(VerifyScript(goodsig1, scriptPubKey23, txTo23, 0, nUnused, 0, true));
keys.clear();
keys.push_back(key1); keys.push_back(key3);
CScript goodsig2 = sign_multisig(scriptPubKey23, keys, txTo23);
BOOST_CHECK(VerifyScript(goodsig2, scriptPubKey23, txTo23, 0, nUnused, 0));
BOOST_CHECK(VerifyScript(goodsig2, scriptPubKey23, txTo23, 0, nUnused, 0, true));
keys.clear();
keys.push_back(key2); keys.push_back(key3);
CScript goodsig3 = sign_multisig(scriptPubKey23, keys, txTo23);
BOOST_CHECK(VerifyScript(goodsig3, scriptPubKey23, txTo23, 0, nUnused, 0));
BOOST_CHECK(VerifyScript(goodsig3, scriptPubKey23, txTo23, 0, nUnused, 0, true));
keys.clear();
keys.push_back(key2); keys.push_back(key2); // Can't re-use sig
CScript badsig1 = sign_multisig(scriptPubKey23, keys, txTo23);
BOOST_CHECK(!VerifyScript(badsig1, scriptPubKey23, txTo23, 0, nUnused, 0));
BOOST_CHECK(!VerifyScript(badsig1, scriptPubKey23, txTo23, 0, nUnused, 0, true));
keys.clear();
keys.push_back(key2); keys.push_back(key1); // sigs must be in correct order
CScript badsig2 = sign_multisig(scriptPubKey23, keys, txTo23);
BOOST_CHECK(!VerifyScript(badsig2, scriptPubKey23, txTo23, 0, nUnused, 0));
BOOST_CHECK(!VerifyScript(badsig2, scriptPubKey23, txTo23, 0, nUnused, 0, true));
keys.clear();
keys.push_back(key3); keys.push_back(key2); // sigs must be in correct order
CScript badsig3 = sign_multisig(scriptPubKey23, keys, txTo23);
BOOST_CHECK(!VerifyScript(badsig3, scriptPubKey23, txTo23, 0, nUnused, 0));
BOOST_CHECK(!VerifyScript(badsig3, scriptPubKey23, txTo23, 0, nUnused, 0, true));
keys.clear();
keys.push_back(key4); keys.push_back(key2); // sigs must match pubkeys
CScript badsig4 = sign_multisig(scriptPubKey23, keys, txTo23);
BOOST_CHECK(!VerifyScript(badsig4, scriptPubKey23, txTo23, 0, nUnused, 0));
BOOST_CHECK(!VerifyScript(badsig4, scriptPubKey23, txTo23, 0, nUnused, 0, true));
keys.clear();
keys.push_back(key1); keys.push_back(key4); // sigs must match pubkeys
CScript badsig5 = sign_multisig(scriptPubKey23, keys, txTo23);
BOOST_CHECK(!VerifyScript(badsig5, scriptPubKey23, txTo23, 0, nUnused, 0));
BOOST_CHECK(!VerifyScript(badsig5, scriptPubKey23, txTo23, 0, nUnused, 0, true));
keys.clear(); // Must have signatures
CScript badsig6 = sign_multisig(scriptPubKey23, keys, txTo23);
BOOST_CHECK(!VerifyScript(badsig6, scriptPubKey23, txTo23, 0, nUnused, 0));
BOOST_CHECK(!VerifyScript(badsig6, scriptPubKey23, txTo23, 0, nUnused, 0, true));
}

14
src/wallet.cpp
View file

@ -42,13 +42,13 @@ bool CWallet::AddCryptedKey(const vector<unsigned char> &vchPubKey, const vector
return false;
}
bool CWallet::AddCScript(const uint160 &hash, const std::vector<unsigned char>& data)
bool CWallet::AddCScript(const uint160 &hash, const CScript& redeemScript)
{
if (!CCryptoKeyStore::AddCScript(hash, data))
if (!CCryptoKeyStore::AddCScript(hash, redeemScript))
return false;
if (!fFileBacked)
return true;
return CWalletDB(strWalletFile).WriteCScript(hash, data);
return CWalletDB(strWalletFile).WriteCScript(hash, redeemScript);
}
bool CWallet::Unlock(const SecureString& strWalletPassphrase)
@ -386,6 +386,14 @@ int64 CWallet::GetDebit(const CTxIn &txin) const
bool CWallet::IsChange(const CTxOut& txout) const
{
CBitcoinAddress address;
// TODO: fix handling of 'change' outputs. The assumption is that any
// payment to a TX_PUBKEYHASH that is mine but isn't in the address book
// is change. That assumption is likely to break when we implement multisignature
// wallets that return change back into a multi-signature-protected address;
// a better way of identifying which outputs are 'the send' and which are
// 'the change' will need to be implemented (maybe extend CWalletTx to remember
// which output, if any, was change).
if (ExtractAddress(txout.scriptPubKey, this, address) && !address.IsScript())
CRITICAL_BLOCK(cs_wallet)
if (!mapAddressBook.count(address))

5
src/wallet.h
View file

@ -7,6 +7,7 @@
#include "bignum.h"
#include "key.h"
#include "keystore.h"
#include "script.h"
class CWalletTx;
@ -69,8 +70,8 @@ public:
bool AddCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
// Adds an encrypted key to the store, without saving it to disk (used by LoadWallet)
bool LoadCryptedKey(const std::vector<unsigned char> &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret) { return CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret); }
bool AddCScript(const uint160& hash, const std::vector<unsigned char>& data);
bool LoadCScript(const uint160& hash, const std::vector<unsigned char>& data) { return CCryptoKeyStore::AddCScript(hash, data); }
bool AddCScript(const uint160& hash, const CScript& redeemScript);
bool LoadCScript(const uint160& hash, const CScript& redeemScript) { return CCryptoKeyStore::AddCScript(hash, redeemScript); }
bool Unlock(const SecureString& strWalletPassphrase);
bool ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase);