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2018-05-29Remove template matching and pseudo opcodesPieter Wuille
The current code contains a rather complex script template matching engine, which is only used for 3 particular script types (P2PK, P2PKH, multisig). The first two of these are trivial to match for otherwise, and a specialized matcher for multisig is both more compact and more efficient than a generic one. The goal is being more flexible, so that for example larger standard multisigs inside SegWit outputs are more easy to implement. As a side-effect, it also gets rid of the pseudo opcodes hack.
2018-04-13[MOVEONLY] Turn CScript::GetOp2 into a function and move to cppPieter Wuille
2018-04-13[MOVEONLY] Move CSCript::FindAndDelete to interpreterPieter Wuille
2018-04-13Delete unused non-const-iterator CSCript::GetOp overloadsPieter Wuille
2018-04-13Make iterators in CScript::FindAndDelete constPieter Wuille
2018-04-12Drop dead code CScript::FindBen Woosley
Last use removed in 922e8e2929a2e78270868385aa46f96002fbcff3 (2012!)
2018-03-20Support serialization as another type without castingPieter Wuille
This adds a READWRITEAS(type, obj) macro which serializes obj as if it were casted to (const type&) when const, and to (type&) when non-const. This makes it usable in serialization code that uses a single implementation for both serialization and deserializing, which doesn't know the constness of the object involved.
2018-02-07Merge #10498: Use static_cast instead of C-style casts for non-fundamental typesMarcoFalke
9ad6746ccd Use static_cast instead of C-style casts for non-fundamental types (practicalswift) Pull request description: A C-style cast is equivalent to try casting in the following order: 1. `const_cast(...)` 2. `static_cast(...)` 3. `const_cast(static_cast(...))` 4. `reinterpret_cast(...)` 5. `const_cast(reinterpret_cast(...))` By using `static_cast<T>(...)` explicitly we avoid the possibility of an unintentional and dangerous `reinterpret_cast`. Furthermore `static_cast<T>(...)` allows for easier grepping of casts. For a more thorough discussion, see ["ES.49: If you must use a cast, use a named cast"](https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#es49-if-you-must-use-a-cast-use-a-named-cast) in the C++ Core Guidelines (Stroustrup & Sutter). Tree-SHA512: bd6349b7ea157da93a47b8cf238932af5dff84731374ccfd69b9f732fabdad1f9b1cdfca67497040f14eaa85346391404f4c0495e22c467f26ca883cd2de4d3c
2018-01-03Increment MIT Licence copyright header year on files modified in 2017Akira Takizawa
2017-11-16scripted-diff: Replace #include "" with #include <> (ryanofsky)MeshCollider
-BEGIN VERIFY SCRIPT- for f in \ src/*.cpp \ src/*.h \ src/bench/*.cpp \ src/bench/*.h \ src/compat/*.cpp \ src/compat/*.h \ src/consensus/*.cpp \ src/consensus/*.h \ src/crypto/*.cpp \ src/crypto/*.h \ src/crypto/ctaes/*.h \ src/policy/*.cpp \ src/policy/*.h \ src/primitives/*.cpp \ src/primitives/*.h \ src/qt/*.cpp \ src/qt/*.h \ src/qt/test/*.cpp \ src/qt/test/*.h \ src/rpc/*.cpp \ src/rpc/*.h \ src/script/*.cpp \ src/script/*.h \ src/support/*.cpp \ src/support/*.h \ src/support/allocators/*.h \ src/test/*.cpp \ src/test/*.h \ src/wallet/*.cpp \ src/wallet/*.h \ src/wallet/test/*.cpp \ src/wallet/test/*.h \ src/zmq/*.cpp \ src/zmq/*.h do base=${f%/*}/ relbase=${base#src/} sed -i "s:#include \"\(.*\)\"\(.*\):if test -e \$base'\\1'; then echo \"#include <\"\$relbase\"\\1>\\2\"; else echo \"#include <\\1>\\2\"; fi:e" $f done -END VERIFY SCRIPT-
2017-09-22Use static_cast instead of C-style casts for non-fundamental typespracticalswift
A C-style cast is equivalent to try casting in the following order: 1. const_cast(...) 2. static_cast(...) 3. const_cast(static_cast(...)) 4. reinterpret_cast(...) 5. const_cast(reinterpret_cast(...)) By using static_cast<T>(...) explicitly we avoid the possibility of an unintentional and dangerous reinterpret_cast. Furthermore static_cast<T>(...) allows for easier grepping of casts.
2017-09-11Fix invalid memory access in CScript::operator+=Anthony Towns
2017-08-16Merge #11011: [Trivial] Add a comment on the use of prevector in script.MarcoFalke
08f71c29e [Trivial] Add a comment on the use of prevector in script. (Gregory Maxwell) Pull request description: Tree-SHA512: 020981516e67e576685eb9a8532178fb97d1780af409fc86d869cd05c293c0c823c26e838cf544d18610f5a3f479ce3e47d2ccb95fb1c4e55fe9e7ceb354f20b
2017-08-12[Trivial] Add a comment on the use of prevector in script.Gregory Maxwell
2017-08-07scripted-diff: Use the C++11 keyword nullptr to denote the pointer literal ↵practicalswift
instead of the macro NULL -BEGIN VERIFY SCRIPT- sed -i 's/\<NULL\>/nullptr/g' src/*.cpp src/*.h src/*/*.cpp src/*/*.h src/qt/*/*.cpp src/qt/*/*.h src/wallet/*/*.cpp src/wallet/*/*.h src/support/allocators/*.h sed -i 's/Prefer nullptr, otherwise SAFECOOKIE./Prefer NULL, otherwise SAFECOOKIE./g' src/torcontrol.cpp sed -i 's/tor: Using nullptr authentication/tor: Using NULL authentication/g' src/torcontrol.cpp sed -i 's/METHODS=nullptr/METHODS=NULL/g' src/test/torcontrol_tests.cpp src/torcontrol.cpp sed -i 's/nullptr certificates/NULL certificates/g' src/qt/paymentserver.cpp sed -i 's/"nullptr"/"NULL"/g' src/torcontrol.cpp src/test/torcontrol_tests.cpp -END VERIFY SCRIPT-
2017-07-07Avoid dereference-of-casted-pointerPieter Wuille
2017-06-13Merge #10534: Clarify prevector::erase and avoid swap-to-clearWladimir J. van der Laan
e241a63 Clarify prevector::erase and avoid swap-to-clear (Pieter Wuille) Tree-SHA512: fa7602038feb4417158df13ee7c0351673acf38f8a824e75889710344c46a9b8d5f6059faeb521f73e48b7ad3e1a238a9e433e4b44f7c3b9085ff08ef65271fa
2017-06-09Clarify prevector::erase and avoid swap-to-clearPieter Wuille
2017-06-07Sanity check transaction scripts in DecodeHexTxAndrew Chow
Make sure that the scripts of decoded transactions are valid scripts.
2017-06-07Add a valid opcode sanity check to CScriptAndrew Chow
Added a function in CScript that checks if the script contains valid opcodes. Add a test for that function
2017-05-02Add constant for maximum stack sizeGregory Sanders
2017-03-03Merge #8808: Do not shadow variables (gcc set)Wladimir J. van der Laan
ad1ae7a Check and enable -Wshadow by default. (Pavel Janík) 9de90bb Do not shadow variables (gcc set) (Pavel Janík) Tree-SHA512: 9517feb423dc8ddd63896016b25324673bfbe0bffa97f22996f59d7a3fcbdc2ebf2e43ac02bc067546f54e293e9b2f2514be145f867321e9031f895c063d9fb8
2016-12-31Increment MIT Licence copyright header year on files modified in 2016isle2983
Edited via: $ contrib/devtools/copyright_header.py update .
2016-12-21Make CScript (and prevector) c++11 movable.Pieter Wuille
Such moves are used when reallocating vectors that contain them, for example.
2016-12-05Do not shadow variables (gcc set)Pavel Janík
2016-12-04Move CTxInWitness inside CTxInPieter Wuille
2016-06-28Rename OP_NOP3 to OP_CHECKSEQUENCEVERIFYBtcDrak
2016-06-22[RPC] signrawtransaction can sign P2WSHNicolasDorier
2016-06-22BIP141: Witness programPieter Wuille
2016-06-22BIP144: Serialization, hashes, relay (sender side)Pieter Wuille
Contains refactorings by Eric Lombrozo. Contains fixup by Nicolas Dorier. Contains cleanup of CInv::GetCommand by Alex Morcos
2016-05-05Merge #7907: Optimize and Cleanup CScript::FindAndDeleteWladimir J. van der Laan
d1d7775 Improve worst-case behavior of CScript::FindAndDelete (Patrick Strateman) e2a30bc Unit test for CScript::FindAndDelete (Gavin Andresen) c0f660c Replace c-style cast with c++ style static_cast. (Patrick Strateman) ec9ad5f Replace memcmp with std::equal in CScript::FindAndDelete (Patrick Strateman)
2016-04-25Treat overly long scriptPubKeys as unspendablePieter Wuille
2016-04-25Introduce constant for maximum CScript lengthPieter Wuille
2016-04-21Improve worst-case behavior of CScript::FindAndDeletePatrick Strateman
Thanks to Sergio Lerner for identifying this issue and suggesting this kind of solution.
2016-04-19Replace c-style cast with c++ style static_cast.Patrick Strateman
2016-04-19Replace memcmp with std::equal in CScript::FindAndDeletePatrick Strateman
Function is stl; std::equal just makes more sense.
2016-02-14BIP112: Implement CHECKSEQUENCEVERIFYMark Friedenbach
- Replace NOP3 with CHECKSEQUENCEVERIFY (BIP112) <nSequence> CHECKSEQUENCEVERIFY -> <nSequence> - Fails if txin.nSequence < nSequence, allowing funds of a txout to be locked for a number of blocks or a duration of time after its inclusion in a block. - Pull most of CheckLockTime() out into VerifyLockTime(), a local function that will be reused for CheckSequence() - Add bitwise AND operator to CScriptNum - Enable CHECKSEQUENCEVERIFY as a standard script verify flag - Transactions that fail CSV verification will be rejected from the mempool, making it easy to test the feature. However blocks containing "invalid" CSV-using transactions will still be accepted; this is *not* the soft-fork required to actually enable CSV for production use.
2016-01-05Merge pull request #7205Wladimir J. van der Laan
fa71669 [devtools] Use git pretty-format for year parsing (MarcoFalke) fa24439 Bump copyright headers to 2015 (MarcoFalke) fa6ad85 [devtools] Rewrite fix-copyright-headers.py (MarcoFalke)
2015-12-15Rename OP_NOP2 to OP_CHECKLOCKTIMEVERIFY.mb300sd
2015-12-13Bump copyright headers to 2015MarcoFalke
2015-11-13Prevector typePieter Wuille
2015-10-15script: Remove magic numbersDavid Hill
This adds two new constants, MAX_OPS_PER_SCRIPT and MAX_PUBKEYS_PER_MULTISIG.
2015-10-01Accept any sequence of PUSHDATAs in OP_RETURN outputsPeter Todd
Previously only one PUSHDATA was allowed, needlessly limiting applications such as matching OP_RETURN contents with bloom filters that operate on a per-PUSHDATA level. Now any combination that passes IsPushOnly() is allowed, so long as the total size of the scriptPubKey is less than 42 bytes. (unchanged modulo non-minimal PUSHDATA encodings) Also, this fixes the odd bug where previously the PUSHDATA could be replaced by any single opcode, even sigops consuming opcodes such as CHECKMULTISIG. (20 sigops!)
2015-10-01Add IsPushOnly(const_iterator pc)Peter Todd
Allows IsPushOnly() to be applied to just part of the script for OP_RETURN outputs.
2015-07-30Resolve issue 3166.mruddy
These changes decode valid SIGHASH types on signatures in assembly (asm) representations of scriptSig scripts. This squashed commit incorporates substantial helpful feedback from jtimon, laanwj, and sipa.
2015-07-20Separate core memory usage computation in core_memusage.hPieter Wuille
2015-07-10Implement accurate memory accounting for mempoolPieter Wuille
2015-07-01add CReserveScript to allow modular script keeping/returningJonas Schnelli
- use one CReserveScript per mining thread
2015-06-26Merge pull request #6124Wladimir J. van der Laan
ffd75ad Enable CHECKLOCKTIMEVERIFY as a standard script verify flag (Peter Todd) bc60b2b Replace NOP2 with CHECKLOCKTIMEVERIFY (BIP65) (Peter Todd) 48e9c57 Move LOCKTIME_THRESHOLD to src/script/script.h (Peter Todd) 99088d6 Make CScriptNum() take nMaxNumSize as an argument (Peter Todd)
2015-06-21Replace NOP2 with CHECKLOCKTIMEVERIFY (BIP65)Peter Todd
<nLockTime> CHECKLOCKTIMEVERIFY -> <nLockTime> Fails if tx.nLockTime < nLockTime, allowing the funds in a txout to be locked until some block height or block time in the future is reached. Only the logic and unittests are implemented; this commit does not have any actual soft-fork logic in it. Thanks to Pieter Wuille for rebase. Credit goes to Gregory Maxwell for the suggestion of comparing the argument against the transaction nLockTime rather than the current time/blockheight directly.