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build: add libbitcoinconsensus files and hook up the lib build

Credit BlueMatt for libbitcoinsonsensus.h/cpp
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theuni committed Oct 14, 2014
1 parent ee64c53 commit 2cf5f16c25ac81eac3a09c4f15dad9d2154c03d4
Showing with 195 additions and 1 deletion.
  1. +5 −0 .gitignore
  2. +31 −0 src/Makefile.am
  3. +1 −1 src/Makefile.test.include
  4. +91 −0 src/script/bitcoinconsensus.cpp
  5. +67 −0 src/script/bitcoinconsensus.h
@@ -45,6 +45,7 @@ src/qt/test/moc*.cpp

.deps
.dirstamp
.libs
.*.swp
*.*~*
*.bak
@@ -66,6 +67,10 @@ src/qt/test/moc*.cpp
*.json.h
*.raw.h

#libtool object files
*.lo
*.la

# Compilation and Qt preprocessor part
*.qm
Makefile
@@ -49,6 +49,8 @@ BITCOIN_INCLUDES += $(BDB_CPPFLAGS)
noinst_LIBRARIES += libbitcoin_wallet.a
endif

lib_LTLIBRARIES = libbitcoinconsensus.la

bin_PROGRAMS =
TESTS =

@@ -331,6 +333,35 @@ bitcoin_cli_SOURCES += bitcoin-cli-res.rc
endif
bitcoin_cli_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)

if BUILD_BITCOIN_LIBS
include_HEADERS = script/bitcoinconsensus.h
libbitcoinconsensus_la_SOURCES = \
core/transaction.cpp \
crypto/sha1.cpp \
crypto/sha2.cpp \
crypto/ripemd160.cpp \
eccryptoverify.cpp \
ecwrapper.cpp \
hash.cpp \
pubkey.cpp \
script/script.cpp \
script/interpreter.cpp \
script/bitcoinconsensus.cpp \
uint256.cpp \
utilstrencodings.cpp

if GLIBC_BACK_COMPAT
libbitcoinconsensus_la_SOURCES += compat/glibc_compat.cpp
libbitcoinconsensus_la_SOURCES += compat/glibcxx_compat.cpp
endif

libbitcoinconsensus_la_LDFLAGS = -no-undefined $(RELDFLAGS)
libbitcoinconsensus_la_LIBADD = $(CRYPTO_LIBS)
libbitcoinconsensus_la_CPPFLAGS = $(CRYPTO_CFLAGS) -I$(builddir)/obj -DBUILD_BITCOIN_INTERNAL
if USE_LIBSECP256K1
libbitcoinconsensus_la_LIBADD += secp256k1/libsecp256k1.la
endif

CLEANFILES = leveldb/libleveldb.a leveldb/libmemenv.a *.gcda *.gcno

DISTCLEANFILES = obj/build.h
@@ -86,7 +86,7 @@ test_test_bitcoin_LDADD += $(LIBBITCOIN_WALLET)
endif

test_test_bitcoin_LDADD += $(BDB_LIBS) $(SSL_LIBS) $(CRYPTO_LIBS) $(MINIUPNPC_LIBS)
test_test_bitcoin_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_test_bitcoin_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS) -static-libtool-libs

nodist_test_test_bitcoin_SOURCES = $(GENERATED_TEST_FILES)

@@ -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

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