diff options
Diffstat (limited to 'src/test/transaction_tests.cpp')
| -rw-r--r-- | src/test/transaction_tests.cpp | 205 |
1 files changed, 152 insertions, 53 deletions
diff --git a/src/test/transaction_tests.cpp b/src/test/transaction_tests.cpp index 1eb30c68d6..40c53cb2ec 100644 --- a/src/test/transaction_tests.cpp +++ b/src/test/transaction_tests.cpp @@ -20,8 +20,10 @@ #include <script/signingprovider.h> #include <script/standard.h> #include <streams.h> +#include <test/util/script.h> #include <test/util/transaction_utils.h> #include <util/strencodings.h> +#include <util/string.h> #include <validation.h> #include <functional> @@ -37,10 +39,9 @@ typedef std::vector<unsigned char> valtype; // In script_tests.cpp -extern UniValue read_json(const std::string& jsondata); +UniValue read_json(const std::string& jsondata); static std::map<std::string, unsigned int> mapFlagNames = { - {std::string("NONE"), (unsigned int)SCRIPT_VERIFY_NONE}, {std::string("P2SH"), (unsigned int)SCRIPT_VERIFY_P2SH}, {std::string("STRICTENC"), (unsigned int)SCRIPT_VERIFY_STRICTENC}, {std::string("DERSIG"), (unsigned int)SCRIPT_VERIFY_DERSIG}, @@ -59,13 +60,14 @@ static std::map<std::string, unsigned int> mapFlagNames = { {std::string("WITNESS_PUBKEYTYPE"), (unsigned int)SCRIPT_VERIFY_WITNESS_PUBKEYTYPE}, {std::string("CONST_SCRIPTCODE"), (unsigned int)SCRIPT_VERIFY_CONST_SCRIPTCODE}, {std::string("TAPROOT"), (unsigned int)SCRIPT_VERIFY_TAPROOT}, + {std::string("DISCOURAGE_UPGRADABLE_PUBKEYTYPE"), (unsigned int)SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_PUBKEYTYPE}, + {std::string("DISCOURAGE_OP_SUCCESS"), (unsigned int)SCRIPT_VERIFY_DISCOURAGE_OP_SUCCESS}, + {std::string("DISCOURAGE_UPGRADABLE_TAPROOT_VERSION"), (unsigned int)SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_TAPROOT_VERSION}, }; unsigned int ParseScriptFlags(std::string strFlags) { - if (strFlags.empty()) { - return 0; - } + if (strFlags.empty() || strFlags == "NONE") return 0; unsigned int flags = 0; std::vector<std::string> words; boost::algorithm::split(words, strFlags, boost::algorithm::is_any_of(",")); @@ -80,6 +82,16 @@ unsigned int ParseScriptFlags(std::string strFlags) return flags; } +// Check that all flags in STANDARD_SCRIPT_VERIFY_FLAGS are present in mapFlagNames. +bool CheckMapFlagNames() +{ + unsigned int standard_flags_missing{STANDARD_SCRIPT_VERIFY_FLAGS}; + for (const auto& pair : mapFlagNames) { + standard_flags_missing &= ~(pair.second); + } + return standard_flags_missing == 0; +} + std::string FormatScriptFlags(unsigned int flags) { if (flags == 0) { @@ -96,20 +108,90 @@ std::string FormatScriptFlags(unsigned int flags) return ret.substr(0, ret.size() - 1); } +/* +* Check that the input scripts of a transaction are valid/invalid as expected. +*/ +bool CheckTxScripts(const CTransaction& tx, const std::map<COutPoint, CScript>& map_prevout_scriptPubKeys, + const std::map<COutPoint, int64_t>& map_prevout_values, unsigned int flags, + const PrecomputedTransactionData& txdata, const std::string& strTest, bool expect_valid) +{ + bool tx_valid = true; + ScriptError err = expect_valid ? SCRIPT_ERR_UNKNOWN_ERROR : SCRIPT_ERR_OK; + for (unsigned int i = 0; i < tx.vin.size() && tx_valid; ++i) { + const CTxIn input = tx.vin[i]; + const CAmount amount = map_prevout_values.count(input.prevout) ? map_prevout_values.at(input.prevout) : 0; + try { + tx_valid = VerifyScript(input.scriptSig, map_prevout_scriptPubKeys.at(input.prevout), + &input.scriptWitness, flags, TransactionSignatureChecker(&tx, i, amount, txdata, MissingDataBehavior::ASSERT_FAIL), &err); + } catch (...) { + BOOST_ERROR("Bad test: " << strTest); + return true; // The test format is bad and an error is thrown. Return true to silence further error. + } + if (expect_valid) { + BOOST_CHECK_MESSAGE(tx_valid, strTest); + BOOST_CHECK_MESSAGE((err == SCRIPT_ERR_OK), ScriptErrorString(err)); + err = SCRIPT_ERR_UNKNOWN_ERROR; + } + } + if (!expect_valid) { + BOOST_CHECK_MESSAGE(!tx_valid, strTest); + BOOST_CHECK_MESSAGE((err != SCRIPT_ERR_OK), ScriptErrorString(err)); + } + return (tx_valid == expect_valid); +} + +/* + * Trim or fill flags to make the combination valid: + * WITNESS must be used with P2SH + * CLEANSTACK must be used WITNESS and P2SH + */ + +unsigned int TrimFlags(unsigned int flags) +{ + // WITNESS requires P2SH + if (!(flags & SCRIPT_VERIFY_P2SH)) flags &= ~(unsigned int)SCRIPT_VERIFY_WITNESS; + + // CLEANSTACK requires WITNESS (and transitively CLEANSTACK requires P2SH) + if (!(flags & SCRIPT_VERIFY_WITNESS)) flags &= ~(unsigned int)SCRIPT_VERIFY_CLEANSTACK; + Assert(IsValidFlagCombination(flags)); + return flags; +} + +unsigned int FillFlags(unsigned int flags) +{ + // CLEANSTACK implies WITNESS + if (flags & SCRIPT_VERIFY_CLEANSTACK) flags |= SCRIPT_VERIFY_WITNESS; + + // WITNESS implies P2SH (and transitively CLEANSTACK implies P2SH) + if (flags & SCRIPT_VERIFY_WITNESS) flags |= SCRIPT_VERIFY_P2SH; + Assert(IsValidFlagCombination(flags)); + return flags; +} + +// Exclude each possible script verify flag from flags. Returns a set of these flag combinations +// that are valid and without duplicates. For example: if flags=1111 and the 4 possible flags are +// 0001, 0010, 0100, and 1000, this should return the set {0111, 1011, 1101, 1110}. +// Assumes that mapFlagNames contains all script verify flags. +std::set<unsigned int> ExcludeIndividualFlags(unsigned int flags) +{ + std::set<unsigned int> flags_combos; + for (const auto& pair : mapFlagNames) { + const unsigned int flags_excluding_one = TrimFlags(flags & ~(pair.second)); + if (flags != flags_excluding_one) { + flags_combos.insert(flags_excluding_one); + } + } + return flags_combos; +} + BOOST_FIXTURE_TEST_SUITE(transaction_tests, BasicTestingSetup) BOOST_AUTO_TEST_CASE(tx_valid) { + BOOST_CHECK_MESSAGE(CheckMapFlagNames(), "mapFlagNames is missing a script verification flag"); // Read tests from test/data/tx_valid.json - // Format is an array of arrays - // Inner arrays are either [ "comment" ] - // or [[[prevout hash, prevout index, prevout scriptPubKey], [input 2], ...],"], serializedTransaction, verifyFlags - // ... where all scripts are stringified scripts. - // - // verifyFlags is a comma separated list of script verification flags to apply, or "NONE" UniValue tests = read_json(std::string(json_tests::tx_valid, json_tests::tx_valid + sizeof(json_tests::tx_valid))); - ScriptError err; for (unsigned int idx = 0; idx < tests.size(); idx++) { UniValue test = tests[idx]; std::string strTest = test.write(); @@ -159,24 +241,35 @@ BOOST_AUTO_TEST_CASE(tx_valid) BOOST_CHECK(state.IsValid()); PrecomputedTransactionData txdata(tx); - for (unsigned int i = 0; i < tx.vin.size(); i++) - { - if (!mapprevOutScriptPubKeys.count(tx.vin[i].prevout)) - { - BOOST_ERROR("Bad test: " << strTest); - break; + unsigned int verify_flags = ParseScriptFlags(test[2].get_str()); + + // Check that the test gives a valid combination of flags (otherwise VerifyScript will throw). Don't edit the flags. + if (~verify_flags != FillFlags(~verify_flags)) { + BOOST_ERROR("Bad test flags: " << strTest); + } + + BOOST_CHECK_MESSAGE(CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, ~verify_flags, txdata, strTest, /* expect_valid */ true), + "Tx unexpectedly failed: " << strTest); + + // Backwards compatibility of script verification flags: Removing any flag(s) should not invalidate a valid transaction + for (const auto& [name, flag] : mapFlagNames) { + // Removing individual flags + unsigned int flags = TrimFlags(~(verify_flags | flag)); + if (!CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, flags, txdata, strTest, /* expect_valid */ true)) { + BOOST_ERROR("Tx unexpectedly failed with flag " << name << " unset: " << strTest); + } + // Removing random combinations of flags + flags = TrimFlags(~(verify_flags | (unsigned int)InsecureRandBits(mapFlagNames.size()))); + if (!CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, flags, txdata, strTest, /* expect_valid */ true)) { + BOOST_ERROR("Tx unexpectedly failed with random flags " << ToString(flags) << ": " << strTest); } + } - CAmount amount = 0; - if (mapprevOutValues.count(tx.vin[i].prevout)) { - amount = mapprevOutValues[tx.vin[i].prevout]; + // Check that flags are maximal: transaction should fail if any unset flags are set. + for (auto flags_excluding_one : ExcludeIndividualFlags(verify_flags)) { + if (!CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, ~flags_excluding_one, txdata, strTest, /* expect_valid */ false)) { + BOOST_ERROR("Too many flags unset: " << strTest); } - unsigned int verify_flags = ParseScriptFlags(test[2].get_str()); - const CScriptWitness *witness = &tx.vin[i].scriptWitness; - BOOST_CHECK_MESSAGE(VerifyScript(tx.vin[i].scriptSig, mapprevOutScriptPubKeys[tx.vin[i].prevout], - witness, verify_flags, TransactionSignatureChecker(&tx, i, amount, txdata), &err), - strTest); - BOOST_CHECK_MESSAGE(err == SCRIPT_ERR_OK, ScriptErrorString(err)); } } } @@ -185,17 +278,8 @@ BOOST_AUTO_TEST_CASE(tx_valid) BOOST_AUTO_TEST_CASE(tx_invalid) { // Read tests from test/data/tx_invalid.json - // Format is an array of arrays - // Inner arrays are either [ "comment" ] - // or [[[prevout hash, prevout index, prevout scriptPubKey], [input 2], ...],"], serializedTransaction, verifyFlags - // ... where all scripts are stringified scripts. - // - // verifyFlags is a comma separated list of script verification flags to apply, or "NONE" UniValue tests = read_json(std::string(json_tests::tx_invalid, json_tests::tx_invalid + sizeof(json_tests::tx_invalid))); - // Initialize to SCRIPT_ERR_OK. The tests expect err to be changed to a - // value other than SCRIPT_ERR_OK. - ScriptError err = SCRIPT_ERR_OK; for (unsigned int idx = 0; idx < tests.size(); idx++) { UniValue test = tests[idx]; std::string strTest = test.write(); @@ -241,28 +325,43 @@ BOOST_AUTO_TEST_CASE(tx_invalid) CTransaction tx(deserialize, stream); TxValidationState state; - fValid = CheckTransaction(tx, state) && state.IsValid(); + if (!CheckTransaction(tx, state) || state.IsInvalid()) { + BOOST_CHECK_MESSAGE(test[2].get_str() == "BADTX", strTest); + continue; + } PrecomputedTransactionData txdata(tx); - for (unsigned int i = 0; i < tx.vin.size() && fValid; i++) - { - if (!mapprevOutScriptPubKeys.count(tx.vin[i].prevout)) - { - BOOST_ERROR("Bad test: " << strTest); - break; + unsigned int verify_flags = ParseScriptFlags(test[2].get_str()); + + // Check that the test gives a valid combination of flags (otherwise VerifyScript will throw). Don't edit the flags. + if (verify_flags != FillFlags(verify_flags)) { + BOOST_ERROR("Bad test flags: " << strTest); + } + + // Not using FillFlags() in the main test, in order to detect invalid verifyFlags combination + BOOST_CHECK_MESSAGE(CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, verify_flags, txdata, strTest, /* expect_valid */ false), + "Tx unexpectedly passed: " << strTest); + + // Backwards compatibility of script verification flags: Adding any flag(s) should not validate an invalid transaction + for (const auto& [name, flag] : mapFlagNames) { + unsigned int flags = FillFlags(verify_flags | flag); + // Adding individual flags + if (!CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, flags, txdata, strTest, /* expect_valid */ false)) { + BOOST_ERROR("Tx unexpectedly passed with flag " << name << " set: " << strTest); + } + // Adding random combinations of flags + flags = FillFlags(verify_flags | (unsigned int)InsecureRandBits(mapFlagNames.size())); + if (!CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, flags, txdata, strTest, /* expect_valid */ false)) { + BOOST_ERROR("Tx unexpectedly passed with random flags " << name << ": " << strTest); } + } - unsigned int verify_flags = ParseScriptFlags(test[2].get_str()); - CAmount amount = 0; - if (mapprevOutValues.count(tx.vin[i].prevout)) { - amount = mapprevOutValues[tx.vin[i].prevout]; + // Check that flags are minimal: transaction should succeed if any set flags are unset. + for (auto flags_excluding_one : ExcludeIndividualFlags(verify_flags)) { + if (!CheckTxScripts(tx, mapprevOutScriptPubKeys, mapprevOutValues, flags_excluding_one, txdata, strTest, /* expect_valid */ true)) { + BOOST_ERROR("Too many flags set: " << strTest); } - const CScriptWitness *witness = &tx.vin[i].scriptWitness; - fValid = VerifyScript(tx.vin[i].scriptSig, mapprevOutScriptPubKeys[tx.vin[i].prevout], - witness, verify_flags, TransactionSignatureChecker(&tx, i, amount, txdata), &err); } - BOOST_CHECK_MESSAGE(!fValid, strTest); - BOOST_CHECK_MESSAGE(err != SCRIPT_ERR_OK, ScriptErrorString(err)); } } } @@ -351,7 +450,7 @@ static void CheckWithFlag(const CTransactionRef& output, const CMutableTransacti { ScriptError error; CTransaction inputi(input); - bool ret = VerifyScript(inputi.vin[0].scriptSig, output->vout[0].scriptPubKey, &inputi.vin[0].scriptWitness, flags, TransactionSignatureChecker(&inputi, 0, output->vout[0].nValue), &error); + bool ret = VerifyScript(inputi.vin[0].scriptSig, output->vout[0].scriptPubKey, &inputi.vin[0].scriptWitness, flags, TransactionSignatureChecker(&inputi, 0, output->vout[0].nValue, MissingDataBehavior::ASSERT_FAIL), &error); assert(ret == success); } |