Credit BlueMatt for libbitcoinsonsensus.h/cpppull/196/head
Cory Fields
10 years ago
parent
ee64c53c1f
commit
2cf5f16c25
@ -0,0 +1,91 @@
|
||||
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
||||
// Copyright (c) 2009-2014 The Bitcoin developers
|
||||
// Distributed under the MIT software license, see the accompanying
|
||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||||
|
||||
#include "bitcoinconsensus.h"
|
||||
|
||||
#include "core/transaction.h"
|
||||
#include "script/interpreter.h"
|
||||
#include "version.h"
|
||||
|
||||
namespace {
|
||||
|
||||
/** A class that deserializes a single CTransaction one time. */
|
||||
class TxInputStream
|
||||
{
|
||||
public:
|
||||
TxInputStream(int nTypeIn, int nVersionIn, const unsigned char *txTo, size_t txToLen) :
|
||||
m_type(nTypeIn),
|
||||
m_version(nVersionIn),
|
||||
m_data(txTo),
|
||||
m_remaining(txToLen)
|
||||
{}
|
||||
|
||||
TxInputStream& read(char* pch, size_t nSize)
|
||||
{
|
||||
if (nSize > m_remaining)
|
||||
throw std::ios_base::failure(std::string(__func__) + ": end of data");
|
||||
|
||||
if (pch == NULL)
|
||||
throw std::ios_base::failure(std::string(__func__) + ": bad destination buffer");
|
||||
|
||||
if (m_data == NULL)
|
||||
throw std::ios_base::failure(std::string(__func__) + ": bad source buffer");
|
||||
|
||||
memcpy(pch, m_data, nSize);
|
||||
m_remaining -= nSize;
|
||||
m_data += nSize;
|
||||
return *this;
|
||||
}
|
||||
|
||||
template<typename T>
|
||||
TxInputStream& operator>>(T& obj)
|
||||
{
|
||||
::Unserialize(*this, obj, m_type, m_version);
|
||||
return *this;
|
||||
}
|
||||
|
||||
private:
|
||||
const int m_type;
|
||||
const int m_version;
|
||||
const unsigned char* m_data;
|
||||
size_t m_remaining;
|
||||
};
|
||||
|
||||
inline int set_error(bitcoinconsensus_error* ret, bitcoinconsensus_error serror)
|
||||
{
|
||||
if (ret)
|
||||
*ret = serror;
|
||||
return 0;
|
||||
}
|
||||
|
||||
} // anon namespace
|
||||
|
||||
int bitcoinconsensus_verify_script(const unsigned char *scriptPubKey, unsigned int scriptPubKeyLen,
|
||||
const unsigned char *txTo , unsigned int txToLen,
|
||||
unsigned int nIn, unsigned int flags, bitcoinconsensus_error* err)
|
||||
{
|
||||
try {
|
||||
TxInputStream stream(SER_NETWORK, PROTOCOL_VERSION, txTo, txToLen);
|
||||
CTransaction tx;
|
||||
stream >> tx;
|
||||
if (nIn >= tx.vin.size())
|
||||
return set_error(err, bitcoinconsensus_ERR_TX_INDEX);
|
||||
if (tx.GetSerializeSize(SER_NETWORK, PROTOCOL_VERSION) != txToLen)
|
||||
return set_error(err, bitcoinconsensus_ERR_TX_SIZE_MISMATCH);
|
||||
|
||||
// Regardless of the verification result, the tx did not error.
|
||||
set_error(err, bitcoinconsensus_ERR_OK);
|
||||
|
||||
return VerifyScript(tx.vin[nIn].scriptSig, CScript(scriptPubKey, scriptPubKey + scriptPubKeyLen), flags, SignatureChecker(tx, nIn), NULL);
|
||||
} catch (std::exception &e) {
|
||||
return set_error(err, bitcoinconsensus_ERR_TX_DESERIALIZE); // Error deserializing
|
||||
}
|
||||
}
|
||||
|
||||
unsigned int bitcoinconsensus_version()
|
||||
{
|
||||
// Just use the API version for now
|
||||
return BITCOINCONSENSUS_API_VER;
|
||||
}
|
||||
@ -0,0 +1,67 @@
|
||||
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
||||
// Copyright (c) 2009-2014 The Bitcoin developers
|
||||
// Distributed under the MIT software license, see the accompanying
|
||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||||
|
||||
#ifndef BITCOIN_BITCOINCONSENSUS_H
|
||||
#define BITCOIN_BITCOINCONSENSUS_H
|
||||
|
||||
#if defined(BUILD_BITCOIN_INTERNAL) && defined(HAVE_CONFIG_H)
|
||||
#include "config/bitcoin-config.h"
|
||||
#if defined(_WIN32)
|
||||
#if defined(DLL_EXPORT)
|
||||
#if defined(HAVE_FUNC_ATTRIBUTE_DLLEXPORT)
|
||||
#define EXPORT_SYMBOL __declspec(dllexport)
|
||||
#else
|
||||
#define EXPORT_SYMBOL
|
||||
#endif
|
||||
#endif
|
||||
#elif defined(HAVE_FUNC_ATTRIBUTE_VISIBILITY)
|
||||
#define EXPORT_SYMBOL __attribute__ ((visibility ("default")))
|
||||
#endif
|
||||
#elif defined(MSC_VER) && !defined(STATIC_LIBBITCOINCONSENSUS)
|
||||
#define EXPORT_SYMBOL __declspec(dllimport)
|
||||
#endif
|
||||
|
||||
#ifndef EXPORT_SYMBOL
|
||||
#define EXPORT_SYMBOL
|
||||
#endif
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define BITCOINCONSENSUS_API_VER 0
|
||||
|
||||
typedef enum bitcoinconsensus_error_t
|
||||
{
|
||||
bitcoinconsensus_ERR_OK = 0,
|
||||
bitcoinconsensus_ERR_TX_INDEX,
|
||||
bitcoinconsensus_ERR_TX_SIZE_MISMATCH,
|
||||
bitcoinconsensus_ERR_TX_DESERIALIZE,
|
||||
} bitcoinconsensus_error;
|
||||
|
||||
/** Script verification flags */
|
||||
enum
|
||||
{
|
||||
bitcoinconsensus_SCRIPT_FLAGS_VERIFY_NONE = 0,
|
||||
bitcoinconsensus_SCRIPT_FLAGS_VERIFY_P2SH = (1U << 0), // evaluate P2SH (BIP16) subscripts
|
||||
};
|
||||
|
||||
/// Returns 1 if the input nIn of the serialized transaction pointed to by
|
||||
/// txTo correctly spends the scriptPubKey pointed to by scriptPubKey under
|
||||
/// the additional constraints specified by flags.
|
||||
/// If not NULL, err will contain an error/success code for the operation
|
||||
EXPORT_SYMBOL int bitcoinconsensus_verify_script(const unsigned char *scriptPubKey, unsigned int scriptPubKeyLen,
|
||||
const unsigned char *txTo , unsigned int txToLen,
|
||||
unsigned int nIn, unsigned int flags, bitcoinconsensus_error* err);
|
||||
|
||||
EXPORT_SYMBOL unsigned int bitcoinconsensus_version();
|
||||
|
||||
#ifdef __cplusplus
|
||||
} // extern "C"
|
||||
#endif
|
||||
|
||||
#undef EXPORT_SYMBOL
|
||||
|
||||
#endif // BITCOIN_BITCOINCONSENSUS_H
|
||||
Loading…
Reference in new issue