remove libbitcoinconsensus

This was deprecated in v27.0, for removal in v28.0.
See discussion in PR #29189.

2 files changed, 0 insertions, 253 deletions

diff --git a/src/script/bitcoinconsensus.cpp b/src/script/bitcoinconsensus.cpp
deleted file mode 100644
index c4eccacf41..0000000000
--- a/src/script/bitcoinconsensus.cpp
+++ /dev/null
@@ -1,157 +0,0 @@
-// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2022 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#include <script/bitcoinconsensus.h>
-
-#include <primitives/transaction.h>
-#include <pubkey.h>
-#include <script/interpreter.h>
-
-namespace {
-
-/** A class that deserializes a single CTransaction one time. */
-class TxInputStream
-{
-public:
-    TxInputStream(const unsigned char *txTo, size_t txToLen) :
-    m_data(txTo),
-    m_remaining(txToLen)
-    {}
-
-    void read(Span<std::byte> dst)
-    {
-        if (dst.size() > m_remaining) {
-            throw std::ios_base::failure(std::string(__func__) + ": end of data");
-        }
-
-        if (dst.data() == nullptr) {
-            throw std::ios_base::failure(std::string(__func__) + ": bad destination buffer");
-        }
-
-        if (m_data == nullptr) {
-            throw std::ios_base::failure(std::string(__func__) + ": bad source buffer");
-        }
-
-        memcpy(dst.data(), m_data, dst.size());
-        m_remaining -= dst.size();
-        m_data += dst.size();
-    }
-
-    template<typename T>
-    TxInputStream& operator>>(T&& obj)
-    {
-        ::Unserialize(*this, obj);
-        return *this;
-    }
-
-private:
-    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;
-}
-
-} // namespace
-
-/** Check that all specified flags are part of the libconsensus interface. */
-static bool verify_flags(unsigned int flags)
-{
-    return (flags & ~(bitcoinconsensus_SCRIPT_FLAGS_VERIFY_ALL)) == 0;
-}
-
-static int verify_script(const unsigned char *scriptPubKey, unsigned int scriptPubKeyLen, CAmount amount,
-                                    const unsigned char *txTo        , unsigned int txToLen,
-                                    const UTXO *spentOutputs, unsigned int spentOutputsLen,
-                                    unsigned int nIn, unsigned int flags, bitcoinconsensus_error* err)
-{
-    if (!verify_flags(flags)) {
-        return set_error(err, bitcoinconsensus_ERR_INVALID_FLAGS);
-    }
-
-    if (flags & bitcoinconsensus_SCRIPT_FLAGS_VERIFY_TAPROOT && spentOutputs == nullptr) {
-        return set_error(err, bitcoinconsensus_ERR_SPENT_OUTPUTS_REQUIRED);
-    }
-
-    try {
-        TxInputStream stream(txTo, txToLen);
-        CTransaction tx(deserialize, TX_WITH_WITNESS, stream);
-
-        std::vector<CTxOut> spent_outputs;
-        if (spentOutputs != nullptr) {
-            if (spentOutputsLen != tx.vin.size()) {
-                return set_error(err, bitcoinconsensus_ERR_SPENT_OUTPUTS_MISMATCH);
-            }
-            for (size_t i = 0; i < spentOutputsLen; i++) {
-                CScript spk = CScript(spentOutputs[i].scriptPubKey, spentOutputs[i].scriptPubKey + spentOutputs[i].scriptPubKeySize);
-                const CAmount& value = spentOutputs[i].value;
-                CTxOut tx_out = CTxOut(value, spk);
-                spent_outputs.push_back(tx_out);
-            }
-        }
-
-        if (nIn >= tx.vin.size())
-            return set_error(err, bitcoinconsensus_ERR_TX_INDEX);
-        if (GetSerializeSize(TX_WITH_WITNESS(tx)) != 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);
-
-        PrecomputedTransactionData txdata(tx);
-
-        if (spentOutputs != nullptr && flags & bitcoinconsensus_SCRIPT_FLAGS_VERIFY_TAPROOT) {
-            txdata.Init(tx, std::move(spent_outputs));
-        }
-
-        return VerifyScript(tx.vin[nIn].scriptSig, CScript(scriptPubKey, scriptPubKey + scriptPubKeyLen), &tx.vin[nIn].scriptWitness, flags, TransactionSignatureChecker(&tx, nIn, amount, txdata, MissingDataBehavior::FAIL), nullptr);
-    } catch (const std::exception&) {
-        return set_error(err, bitcoinconsensus_ERR_TX_DESERIALIZE); // Error deserializing
-    }
-}
-
-int bitcoinconsensus_verify_script_with_spent_outputs(const unsigned char *scriptPubKey, unsigned int scriptPubKeyLen, int64_t amount,
-                                    const unsigned char *txTo        , unsigned int txToLen,
-                                    const UTXO *spentOutputs, unsigned int spentOutputsLen,
-                                    unsigned int nIn, unsigned int flags, bitcoinconsensus_error* err)
-{
-    CAmount am(amount);
-    return ::verify_script(scriptPubKey, scriptPubKeyLen, am, txTo, txToLen, spentOutputs, spentOutputsLen, nIn, flags, err);
-}
-
-int bitcoinconsensus_verify_script_with_amount(const unsigned char *scriptPubKey, unsigned int scriptPubKeyLen, int64_t amount,
-                                    const unsigned char *txTo        , unsigned int txToLen,
-                                    unsigned int nIn, unsigned int flags, bitcoinconsensus_error* err)
-{
-    CAmount am(amount);
-    UTXO *spentOutputs = nullptr;
-    unsigned int spentOutputsLen = 0;
-    return ::verify_script(scriptPubKey, scriptPubKeyLen, am, txTo, txToLen, spentOutputs, spentOutputsLen, nIn, flags, err);
-}
-
-
-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)
-{
-    if (flags & bitcoinconsensus_SCRIPT_FLAGS_VERIFY_WITNESS) {
-        return set_error(err, bitcoinconsensus_ERR_AMOUNT_REQUIRED);
-    }
-
-    CAmount am(0);
-    UTXO *spentOutputs = nullptr;
-    unsigned int spentOutputsLen = 0;
-    return ::verify_script(scriptPubKey, scriptPubKeyLen, am, txTo, txToLen, spentOutputs, spentOutputsLen, nIn, flags, err);
-}
-
-unsigned int bitcoinconsensus_version()
-{
-    // Just use the API version for now
-    return BITCOINCONSENSUS_API_VER;
-}
diff --git a/src/script/bitcoinconsensus.h b/src/script/bitcoinconsensus.h
deleted file mode 100644
index a202b5ba06..0000000000
--- a/src/script/bitcoinconsensus.h
+++ /dev/null
@@ -1,96 +0,0 @@
-// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2021 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#ifndef BITCOIN_SCRIPT_BITCOINCONSENSUS_H
-#define BITCOIN_SCRIPT_BITCOINCONSENSUS_H
-
-#include <stdint.h>
-
-#if defined(BUILD_BITCOIN_INTERNAL) && defined(HAVE_CONFIG_H)
-#include <config/bitcoin-config.h>
-  #if defined(_WIN32)
-    #if defined(HAVE_DLLEXPORT_ATTRIBUTE)
-      #define EXPORT_SYMBOL __declspec(dllexport)
-    #else
-      #define EXPORT_SYMBOL
-    #endif
-  #elif defined(HAVE_DEFAULT_VISIBILITY_ATTRIBUTE)
-    #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 2
-
-typedef enum bitcoinconsensus_error_t
-{
-    bitcoinconsensus_ERR_OK = 0,
-    bitcoinconsensus_ERR_TX_INDEX,
-    bitcoinconsensus_ERR_TX_SIZE_MISMATCH,
-    bitcoinconsensus_ERR_TX_DESERIALIZE,
-    bitcoinconsensus_ERR_AMOUNT_REQUIRED,
-    bitcoinconsensus_ERR_INVALID_FLAGS,
-    bitcoinconsensus_ERR_SPENT_OUTPUTS_REQUIRED,
-    bitcoinconsensus_ERR_SPENT_OUTPUTS_MISMATCH
-} bitcoinconsensus_error;
-
-/** Script verification flags */
-enum
-{
-    bitcoinconsensus_SCRIPT_FLAGS_VERIFY_NONE                = 0,
-    bitcoinconsensus_SCRIPT_FLAGS_VERIFY_P2SH                = (1U << 0), // evaluate P2SH (BIP16) subscripts
-    bitcoinconsensus_SCRIPT_FLAGS_VERIFY_DERSIG              = (1U << 2), // enforce strict DER (BIP66) compliance
-    bitcoinconsensus_SCRIPT_FLAGS_VERIFY_NULLDUMMY           = (1U << 4), // enforce NULLDUMMY (BIP147)
-    bitcoinconsensus_SCRIPT_FLAGS_VERIFY_CHECKLOCKTIMEVERIFY = (1U << 9), // enable CHECKLOCKTIMEVERIFY (BIP65)
-    bitcoinconsensus_SCRIPT_FLAGS_VERIFY_CHECKSEQUENCEVERIFY = (1U << 10), // enable CHECKSEQUENCEVERIFY (BIP112)
-    bitcoinconsensus_SCRIPT_FLAGS_VERIFY_WITNESS             = (1U << 11), // enable WITNESS (BIP141)
-    bitcoinconsensus_SCRIPT_FLAGS_VERIFY_TAPROOT             = (1U << 17), // enable TAPROOT (BIPs 341 & 342)
-    bitcoinconsensus_SCRIPT_FLAGS_VERIFY_ALL                 = bitcoinconsensus_SCRIPT_FLAGS_VERIFY_P2SH | bitcoinconsensus_SCRIPT_FLAGS_VERIFY_DERSIG |
-                                                               bitcoinconsensus_SCRIPT_FLAGS_VERIFY_NULLDUMMY | bitcoinconsensus_SCRIPT_FLAGS_VERIFY_CHECKLOCKTIMEVERIFY |
-                                                               bitcoinconsensus_SCRIPT_FLAGS_VERIFY_CHECKSEQUENCEVERIFY | bitcoinconsensus_SCRIPT_FLAGS_VERIFY_WITNESS |
-                                                               bitcoinconsensus_SCRIPT_FLAGS_VERIFY_TAPROOT
-};
-
-typedef struct {
-    const unsigned char *scriptPubKey;
-    unsigned int scriptPubKeySize;
-    int64_t value;
-} UTXO;
-
-/// 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 nullptr, 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 int bitcoinconsensus_verify_script_with_amount(const unsigned char *scriptPubKey, unsigned int scriptPubKeyLen, int64_t amount,
-                                    const unsigned char *txTo        , unsigned int txToLen,
-                                    unsigned int nIn, unsigned int flags, bitcoinconsensus_error* err);
-
-EXPORT_SYMBOL int bitcoinconsensus_verify_script_with_spent_outputs(const unsigned char *scriptPubKey, unsigned int scriptPubKeyLen, int64_t amount,
-                                    const unsigned char *txTo        , unsigned int txToLen,
-                                    const UTXO *spentOutputs, unsigned int spentOutputsLen,
-                                    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_SCRIPT_BITCOINCONSENSUS_H