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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server340 file guides

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

bitcoin / bitcoinstable

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▤ descriptor.cppGuide

▤ descriptor.h

▤ interpreter.cppGuide

▤ signingprovider.cpp

▤ arith_uint256.hGuide

▤ bitcoin-chainstate.cpp

▤ bitcoin-cli-res.rc

▤ bitcoin-cli.cppGuide

▤ bitcoin-res.rc

▤ bitcoin-tx-res.rc

▤ bitcoin-tx.cpp

▤ bitcoin-util-res.rc

▤ bitcoin-util.cpp

▤ bitcoin-wallet-res.rc

▤ blockencodings.cppGuide

▤ blockencodings.hGuide

▤ blockfilter.cppGuide

▤ blockfilter.hGuide

▤ chain.cppGuide

▤ chain.h

▤ chainparams.cppGuide

▤ chainparams.h

▤ chainparamsbase.cppGuide

▤ chainparamsbase.hGuide

▤ chainparamsseeds.h

▤ checkqueue.hGuide

▤ clientversion.cpp

▤ clientversion.hGuide

▤ cluster_linearize.h

▤ CMakeLists.txt

▤ coins.cppGuide

▤ coins.hGuide

▤ compressor.cppGuide

▤ deploymentstatus.cpp

▤ deploymentstatus.h

▤ dummywallet.cpp

▤ external_signer.cpp

▤ merkleblock.cppGuide

▤ merkleblock.hGuide

▤ musig.cpp

▤ musig.h

▤ net_permissions.cppGuide

▤ net_permissions.h

▤ net_processing.cppGuide

▤ netaddress.cppGuide

▤ private_broadcast.cpp

▤ private_broadcast.h

▤ threadsafety.hGuide

▤ tinyformat.h

▤ torcontrol.cppGuide

▤ validation.cppGuide

▤ validation.h

▤ validationinterface.cpp

▤ validationinterface.h

▤ versionbits_impl.h

▤ versionbits.cpp

▤ versionbits.h

▤ walletinitinterface.h

▤ CMakeLists.txtGuide

▤ libbitcoinkernel.pc.in

bitcoin / src / script / script.cpp

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14,012 bytes · SHA-256 210b1720acce295d… · View upstream ↗

251{
252    if (this->size() < 4 || this->size() > 42) {
253        return false;
254    }
255    if ((*this)[0] != OP_0 && ((*this)[0] < OP_1 || (*this)[0] > OP_16)) {
256        return false;
257    }
258    if ((size_t)((*this)[1] + 2) == this->size()) {
259        version = DecodeOP_N((opcodetype)(*this)[0]);
260        program = std::vector<unsigned char>(this->begin() + 2, this->end());
261        return true;
262    }
263    return false;
264}
265
266bool CScript::IsPushOnly(const_iterator pc) const
267{
268    while (pc < end())
269    {
270        opcodetype opcode;
271        if (!GetOp(pc, opcode))
272            return false;
273        // Note that IsPushOnly() *does* consider OP_RESERVED to be a
274        // push-type opcode, however execution of OP_RESERVED fails, so
275        // it's not relevant to P2SH/BIP62 as the scriptSig would fail prior to
276        // the P2SH special validation code being executed.
277        if (opcode > OP_16)
278            return false;
279    }
280    return true;
281}
282
283bool CScript::IsPushOnly() const
284{
285    return this->IsPushOnly(begin());
286}
287
288std::string CScriptWitness::ToString() const
289{
290    std::string ret = "CScriptWitness(";
291    for (unsigned int i = 0; i < stack.size(); i++) {
292        if (i) {
293            ret += ", ";
294        }
295        ret += HexStr(stack[i]);
296    }
297    return ret + ")";
298}
299
300bool CScript::HasValidOps() const
301{
302    CScript::const_iterator it = begin();
303    while (it < end()) {
304        opcodetype opcode;
305        std::vector<unsigned char> item;
306        if (!GetOp(it, opcode, item) || opcode > MAX_OPCODE || item.size() > MAX_SCRIPT_ELEMENT_SIZE) {
307            return false;
308        }
309    }
310    return true;
311}
312
313bool GetScriptOp(CScriptBase::const_iterator& pc, CScriptBase::const_iterator end, opcodetype& opcodeRet, std::vector<unsigned char>* pvchRet)
314{
315    opcodeRet = OP_INVALIDOPCODE;
316    if (pvchRet)
317        pvchRet->clear();
318    if (pc >= end)
319        return false;
320
321    // Read instruction
322    if (end - pc < 1)
323        return false;
324    unsigned int opcode = *pc++;
325
326    // Immediate operand
327    if (opcode <= OP_PUSHDATA4)
328    {
329        unsigned int nSize = 0;
330        if (opcode < OP_PUSHDATA1)
331        {
332            nSize = opcode;
333        }
334        else if (opcode == OP_PUSHDATA1)
335        {
336            if (end - pc < 1)
337                return false;
338            nSize = *pc++;
339        }
340        else if (opcode == OP_PUSHDATA2)
341        {
342            if (end - pc < 2)
343                return false;
344            nSize = ReadLE16(&pc[0]);
345            pc += 2;
346        }
347        else if (opcode == OP_PUSHDATA4)
348        {
349            if (end - pc < 4)
350                return false;
351            nSize = ReadLE32(&pc[0]);
352            pc += 4;
353        }
354        if (end - pc < 0 || (unsigned int)(end - pc) < nSize)
355            return false;
356        if (pvchRet)
357            pvchRet->assign(pc, pc + nSize);
358        pc += nSize;
359    }
360
361    opcodeRet = static_cast<opcodetype>(opcode);
362    return true;
363}
364
365bool IsOpSuccess(const opcodetype& opcode)
366{
367    return opcode == 80 || opcode == 98 || (opcode >= 126 && opcode <= 129) ||
368           (opcode >= 131 && opcode <= 134) || (opcode >= 137 && opcode <= 138) ||
369           (opcode >= 141 && opcode <= 142) || (opcode >= 149 && opcode <= 153) ||
370           (opcode >= 187 && opcode <= 254);
371}
372
373bool CheckMinimalPush(const std::vector<unsigned char>& data, opcodetype opcode) {
374    // Excludes OP_1NEGATE, OP_1-16 since they are by definition minimal
375    assert(0 <= opcode && opcode <= OP_PUSHDATA4);
376    if (data.size() == 0) {
377        // Should have used OP_0.
378        return opcode == OP_0;
379    } else if (data.size() == 1 && data[0] >= 1 && data[0] <= 16) {
380        // Should have used OP_1 .. OP_16.
381        return false;
382    } else if (data.size() == 1 && data[0] == 0x81) {
383        // Should have used OP_1NEGATE.
384        return false;
385    } else if (data.size() <= 75) {
386        // Must have used a direct push (opcode indicating number of bytes pushed + those bytes).
387        return opcode == data.size();
388    } else if (data.size() <= 255) {
389        // Must have used OP_PUSHDATA.
390        return opcode == OP_PUSHDATA1;
391    } else if (data.size() <= 65535) {
392        // Must have used OP_PUSHDATA2.
393        return opcode == OP_PUSHDATA2;
394    }
395    return true;
396}
397

A READING COMPANION

Source available. Guide coming next.

This file is included in the stable source snapshot. A file-specific guide has not been published yet.

340 guided files · 2,680 pending. Guides cover key sections, not every line.

cmake/bitcoin-build-config.h.in src/consensus/amount.h src/consensus/consensus.h src/primitives/block.h src/primitives/transaction.h src/crypto/sha256.h src/util/moneystr.h src/clientversion.h src/uint256.h src/script/script.h src/policy/policy.h CMakeLists.txt README.md COPYING src/consensus/tx_check.cpp src/consensus/tx_verify.cpp src/consensus/merkle.cpp src/pow.cpp src/validation.cpp src/script/interpreter.cpp src/script/solver.cpp src/script/sign.cpp src/key_io.cpp src/net.cpp src/net_processing.cpp src/netaddress.cpp src/protocol.h src/wallet/wallet.cpp src/wallet/spend.cpp

← Previous 250 linesCode page 2

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

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Bitcoin Core source © its contributors, distributed under the MIT license. Original notices and bundled third-party licenses are retained in the source tree.