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Refactor: split CKeyID/CScriptID/CTxDestination from CBitcoinAddress

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This introduces internal types:
* CKeyID: reference (hash160) of a key
* CScriptID: reference (hash160) of a script
* CTxDestination: a boost::variant of the former two

CBitcoinAddress is retrofitted to be a Base58 encoding of a
CTxDestination. This allows all internal code to only use the
internal types, and only have RPC and GUI depend on the base58 code.

Furthermore, the header dependencies are a lot saner now. base58.h is
at the top (right below rpc and gui) instead of at the bottom. For the
rest: wallet -> script -> keystore -> key. Only keystore still requires
a forward declaration of CScript. Solving that would require splitting
script into two layers.
This commit is contained in:
Pieter Wuille
2012-05-14 23:44:52 +02:00
parent fd61d6f506
commit 1025440184
26 changed files with 477 additions and 339 deletions
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38
src/script.h
View File

@@ -5,15 +5,16 @@
#ifndef H_BITCOIN_SCRIPT
#define H_BITCOIN_SCRIPT
#include "base58.h"
#include <string>
#include <vector>
#include <boost/foreach.hpp>
#include <boost/variant.hpp>
#include "keystore.h"
#include "bignum.h"
class CTransaction;
class CKeyStore;
/** Signature hash types/flags */
enum
@@ -35,6 +36,20 @@ enum txnouttype
TX_MULTISIG,
};
class CNoDestination {
public:
friend bool operator==(const CNoDestination &a, const CNoDestination &b) { return true; }
friend bool operator<(const CNoDestination &a, const CNoDestination &b) { return true; }
};
/** A txout script template with a specific destination. It is either:
* * CNoDestination: no destination set
* * CKeyID: TX_PUBKEYHASH destination
* * CScriptID: TX_SCRIPTHASH destination
* A CTxDestination is the internal data type encoded in a CBitcoinAddress
*/
typedef boost::variant<CNoDestination, CKeyID, CScriptID> CTxDestination;
const char* GetTxnOutputType(txnouttype t);
/** Script opcodes */
@@ -521,13 +536,8 @@ public:
}
void SetBitcoinAddress(const CBitcoinAddress& address);
void SetBitcoinAddress(const std::vector<unsigned char>& vchPubKey)
{
SetBitcoinAddress(CBitcoinAddress(vchPubKey));
}
void SetDestination(const CTxDestination& address);
void SetMultisig(int nRequired, const std::vector<CKey>& keys);
void SetPayToScriptHash(const CScript& subscript);
void PrintHex() const
@@ -562,6 +572,11 @@ public:
{
printf("%s\n", ToString().c_str());
}
CScriptID GetID() const
{
return CScriptID(Hash160(*this));
}
};
@@ -573,8 +588,9 @@ bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<std::v
int ScriptSigArgsExpected(txnouttype t, const std::vector<std::vector<unsigned char> >& vSolutions);
bool IsStandard(const CScript& scriptPubKey);
bool IsMine(const CKeyStore& keystore, const CScript& scriptPubKey);
bool ExtractAddress(const CScript& scriptPubKey, CBitcoinAddress& addressRet);
bool ExtractAddresses(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<CBitcoinAddress>& addressRet, int& nRequiredRet);
bool IsMine(const CKeyStore& keystore, const CTxDestination &dest);
bool ExtractDestination(const CScript& scriptPubKey, CTxDestination& addressRet);
bool ExtractDestinations(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<CTxDestination>& addressRet, int& nRequiredRet);
bool SignSignature(const CKeyStore& keystore, const CTransaction& txFrom, CTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL);
bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, bool fValidatePayToScriptHash, int nHashType);