diff options
-rw-r--r-- | .travis.yml | 2 | ||||
-rw-r--r-- | depends/packages/libxcb.mk | 12 | ||||
-rw-r--r-- | doc/build-unix.md | 8 | ||||
-rw-r--r-- | doc/release-notes/release-notes-0.18.1.md | 3 | ||||
-rw-r--r-- | src/netbase.cpp | 4 | ||||
-rw-r--r-- | src/netbase.h | 2 | ||||
-rw-r--r-- | src/rpc/mining.cpp | 2 | ||||
-rw-r--r-- | src/script/descriptor.cpp | 36 | ||||
-rw-r--r-- | src/script/descriptor.h | 6 | ||||
-rw-r--r-- | src/test/util_tests.cpp | 18 | ||||
-rw-r--r-- | src/util/strencodings.cpp | 13 | ||||
-rw-r--r-- | src/util/strencodings.h | 33 | ||||
-rw-r--r-- | src/util/system.cpp | 2 | ||||
-rw-r--r-- | src/wallet/wallet.cpp | 18 | ||||
-rw-r--r-- | src/wallet/wallet.h | 2 | ||||
-rwxr-xr-x | test/functional/interface_zmq.py | 14 | ||||
-rw-r--r-- | test/functional/test_framework/util.py | 7 |
17 files changed, 116 insertions, 66 deletions
diff --git a/.travis.yml b/.travis.yml index 422e9149f4..d49c116a5e 100644 --- a/.travis.yml +++ b/.travis.yml @@ -64,8 +64,10 @@ before_script: script: - export CONTINUE=1 - if [ $SECONDS -gt 1200 ]; then export CONTINUE=0; fi # Likely the depends build took very long + - if [ $TRAVIS_REPO_SLUG = "bitcoin/bitcoin" ]; then export CONTINUE=1; fi # Whitelisted repo (90 minutes build time) - if [ $CONTINUE = "1" ]; then set -o errexit; source .travis/test_06_script_a.sh; else set +o errexit; echo "$CACHE_ERR_MSG"; false; fi - if [ $SECONDS -gt 2000 ]; then export CONTINUE=0; fi # Likely the build took very long; The tests take about 1000s, so we should abort if we have less than 50*60-1000=2000s left + - if [ $TRAVIS_REPO_SLUG = "bitcoin/bitcoin" ]; then export CONTINUE=1; fi # Whitelisted repo (90 minutes build time) - if [ $CONTINUE = "1" ]; then set -o errexit; source .travis/test_06_script_b.sh; else set +o errexit; echo "$CACHE_ERR_MSG"; false; fi after_script: - echo $TRAVIS_COMMIT_RANGE diff --git a/depends/packages/libxcb.mk b/depends/packages/libxcb.mk index c497c5ac20..90bc15f9f4 100644 --- a/depends/packages/libxcb.mk +++ b/depends/packages/libxcb.mk @@ -7,6 +7,18 @@ $(package)_dependencies=xcb_proto libXau define $(package)_set_vars $(package)_config_opts=--disable-static +# Because we pass -qt-xcb to Qt, it will compile in a set of xcb helper libraries and extensions, +# so we skip building all of the extensions here. +# More info is available from: https://doc.qt.io/qt-5.9/linux-requirements.html +$(package)_config_opts += --disable-composite --disable-damage --disable-dpms +$(package)_config_opts += --disable-dri2 --disable-dri3 --disable-glx +$(package)_config_opts += --disable-present --disable-randr --disable-record +$(package)_config_opts += --disable-render --disable-resource --disable-screensaver +$(package)_config_opts += --disable-shape --disable-shm --disable-sync +$(package)_config_opts += --disable-xevie --disable-xfixes --disable-xfree86-dri +$(package)_config_opts += --disable-xinerama --disable-xinput --disable-xkb +$(package)_config_opts += --disable-xprint --disable-selinux --disable-xtest +$(package)_config_opts += --disable-xv --disable-xvmc endef define $(package)_preprocess_cmds diff --git a/doc/build-unix.md b/doc/build-unix.md index f1bc770dfb..9aca0336c0 100644 --- a/doc/build-unix.md +++ b/doc/build-unix.md @@ -61,6 +61,14 @@ tuned to conserve memory with additional CXXFLAGS: ./configure CXXFLAGS="--param ggc-min-expand=1 --param ggc-min-heapsize=32768" +Alternatively, or in addition, debugging information can be skipped for compilation. The default compile flags are +`-g -O2`, and can be changed with: + + ./configure CXXFLAGS="-O2" + +Finally, clang (often less resource hungry) can be used instead of gcc, which is used by default: + + ./configure CXX=clang++ CC=clang ## Linux Distribution Specific Instructions diff --git a/doc/release-notes/release-notes-0.18.1.md b/doc/release-notes/release-notes-0.18.1.md index 8890e2163e..483cc5075e 100644 --- a/doc/release-notes/release-notes-0.18.1.md +++ b/doc/release-notes/release-notes-0.18.1.md @@ -126,8 +126,9 @@ Thanks to everyone who directly contributed to this release: - Kristaps Kaupe - Luke Dashjr - MarcoFalke -- MeshCollider +- Michele Federici - Pieter Wuille +- Samuel Dobson - shannon1916 - tecnovert - Wladimir J. van der Laan diff --git a/src/netbase.cpp b/src/netbase.cpp index 6d4738c835..0148aea428 100644 --- a/src/netbase.cpp +++ b/src/netbase.cpp @@ -37,8 +37,8 @@ bool fNameLookup = DEFAULT_NAME_LOOKUP; static const int SOCKS5_RECV_TIMEOUT = 20 * 1000; static std::atomic<bool> interruptSocks5Recv(false); -enum Network ParseNetwork(std::string net) { - Downcase(net); +enum Network ParseNetwork(const std::string& net_in) { + std::string net = ToLower(net_in); if (net == "ipv4") return NET_IPV4; if (net == "ipv6") return NET_IPV6; if (net == "onion") return NET_ONION; diff --git a/src/netbase.h b/src/netbase.h index 708df5b8e2..313a575687 100644 --- a/src/netbase.h +++ b/src/netbase.h @@ -37,7 +37,7 @@ public: bool randomize_credentials; }; -enum Network ParseNetwork(std::string net); +enum Network ParseNetwork(const std::string& net); std::string GetNetworkName(enum Network net); bool SetProxy(enum Network net, const proxyType &addrProxy); bool GetProxy(enum Network net, proxyType &proxyInfoOut); diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp index 48bc88823a..92a0e33769 100644 --- a/src/rpc/mining.cpp +++ b/src/rpc/mining.cpp @@ -352,7 +352,7 @@ static UniValue getblocktemplate(const JSONRPCRequest& request) "}\n" }, RPCExamples{ - HelpExampleCli("getblocktemplate", "{\"rules\": [\"segwit\"]}") + HelpExampleCli("getblocktemplate", "'{\"rules\": [\"segwit\"]}'") + HelpExampleRpc("getblocktemplate", "{\"rules\": [\"segwit\"]}") }, }.Check(request); diff --git a/src/script/descriptor.cpp b/src/script/descriptor.cpp index 50119ba184..327af62a4f 100644 --- a/src/script/descriptor.cpp +++ b/src/script/descriptor.cpp @@ -335,10 +335,12 @@ public: /** Base class for all Descriptor implementations. */ class DescriptorImpl : public Descriptor { - //! Public key arguments for this descriptor (size 1 for PK, PKH, WPKH; any size of Multisig). + //! Public key arguments for this descriptor (size 1 for PK, PKH, WPKH; any size for Multisig). const std::vector<std::unique_ptr<PubkeyProvider>> m_pubkey_args; //! The sub-descriptor argument (nullptr for everything but SH and WSH). - const std::unique_ptr<DescriptorImpl> m_script_arg; + //! In doc/descriptors.m this is referred to as SCRIPT expressions sh(SCRIPT) + //! and wsh(SCRIPT), and distinct from KEY expressions and ADDR expressions. + const std::unique_ptr<DescriptorImpl> m_subdescriptor_arg; //! The string name of the descriptor function. const std::string m_name; @@ -349,10 +351,10 @@ protected: /** A helper function to construct the scripts for this descriptor. * * This function is invoked once for every CScript produced by evaluating - * m_script_arg, or just once in case m_script_arg is nullptr. + * m_subdescriptor_arg, or just once in case m_subdescriptor_arg is nullptr. * @param pubkeys The evaluations of the m_pubkey_args field. - * @param script The evaluation of m_script_arg (or nullptr when m_script_arg is nullptr). + * @param script The evaluation of m_subdescriptor_arg (or nullptr when m_subdescriptor_arg is nullptr). * @param out A FlatSigningProvider to put scripts or public keys in that are necessary to the solver. * The script arguments to this function are automatically added, as is the origin info of the provided pubkeys. * @return A vector with scriptPubKeys for this descriptor. @@ -360,12 +362,12 @@ protected: virtual std::vector<CScript> MakeScripts(const std::vector<CPubKey>& pubkeys, const CScript* script, FlatSigningProvider& out) const = 0; public: - DescriptorImpl(std::vector<std::unique_ptr<PubkeyProvider>> pubkeys, std::unique_ptr<DescriptorImpl> script, const std::string& name) : m_pubkey_args(std::move(pubkeys)), m_script_arg(std::move(script)), m_name(name) {} + DescriptorImpl(std::vector<std::unique_ptr<PubkeyProvider>> pubkeys, std::unique_ptr<DescriptorImpl> script, const std::string& name) : m_pubkey_args(std::move(pubkeys)), m_subdescriptor_arg(std::move(script)), m_name(name) {} bool IsSolvable() const override { - if (m_script_arg) { - if (!m_script_arg->IsSolvable()) return false; + if (m_subdescriptor_arg) { + if (!m_subdescriptor_arg->IsSolvable()) return false; } return true; } @@ -375,8 +377,8 @@ public: for (const auto& pubkey : m_pubkey_args) { if (pubkey->IsRange()) return true; } - if (m_script_arg) { - if (m_script_arg->IsRange()) return true; + if (m_subdescriptor_arg) { + if (m_subdescriptor_arg->IsRange()) return true; } return false; } @@ -396,10 +398,10 @@ public: } ret += std::move(tmp); } - if (m_script_arg) { + if (m_subdescriptor_arg) { if (pos++) ret += ","; std::string tmp; - if (!m_script_arg->ToStringHelper(arg, tmp, priv)) return false; + if (!m_subdescriptor_arg->ToStringHelper(arg, tmp, priv)) return false; ret += std::move(tmp); } out = std::move(ret) + ")"; @@ -428,6 +430,8 @@ public: // Construct temporary data in `entries` and `subscripts`, to avoid producing output in case of failure. for (const auto& p : m_pubkey_args) { entries.emplace_back(); + // If we have a cache, we don't need GetPubKey to compute the public key. + // Pass in nullptr to signify only origin info is desired. if (!p->GetPubKey(pos, arg, cache_read ? nullptr : &entries.back().first, entries.back().second)) return false; if (cache_read) { // Cached expanded public key exists, use it. @@ -444,9 +448,9 @@ public: } } std::vector<CScript> subscripts; - if (m_script_arg) { + if (m_subdescriptor_arg) { FlatSigningProvider subprovider; - if (!m_script_arg->ExpandHelper(pos, arg, cache_read, subscripts, subprovider, cache_write)) return false; + if (!m_subdescriptor_arg->ExpandHelper(pos, arg, cache_read, subscripts, subprovider, cache_write)) return false; out = Merge(out, subprovider); } @@ -456,7 +460,7 @@ public: pubkeys.push_back(entry.first); out.origins.emplace(entry.first.GetID(), std::make_pair<CPubKey, KeyOriginInfo>(CPubKey(entry.first), std::move(entry.second))); } - if (m_script_arg) { + if (m_subdescriptor_arg) { for (const auto& subscript : subscripts) { out.scripts.emplace(CScriptID(subscript), subscript); std::vector<CScript> addscripts = MakeScripts(pubkeys, &subscript, out); @@ -488,9 +492,9 @@ public: if (!p->GetPrivKey(pos, provider, key)) continue; out.keys.emplace(key.GetPubKey().GetID(), key); } - if (m_script_arg) { + if (m_subdescriptor_arg) { FlatSigningProvider subprovider; - m_script_arg->ExpandPrivate(pos, provider, subprovider); + m_subdescriptor_arg->ExpandPrivate(pos, provider, subprovider); out = Merge(out, subprovider); } } diff --git a/src/script/descriptor.h b/src/script/descriptor.h index 29915c6c92..a34e9f0d8a 100644 --- a/src/script/descriptor.h +++ b/src/script/descriptor.h @@ -47,9 +47,9 @@ struct Descriptor { * * pos: the position at which to expand the descriptor. If IsRange() is false, this is ignored. * provider: the provider to query for private keys in case of hardened derivation. - * output_script: the expanded scriptPubKeys will be put here. + * output_scripts: the expanded scriptPubKeys will be put here. * out: scripts and public keys necessary for solving the expanded scriptPubKeys will be put here (may be equal to provider). - * cache: vector which will be overwritten with cache data necessary to-evaluate the descriptor at this point without access to private keys. + * cache: vector which will be overwritten with cache data necessary to evaluate the descriptor at this point without access to private keys. */ virtual bool Expand(int pos, const SigningProvider& provider, std::vector<CScript>& output_scripts, FlatSigningProvider& out, std::vector<unsigned char>* cache = nullptr) const = 0; @@ -57,7 +57,7 @@ struct Descriptor { * * pos: the position at which to expand the descriptor. If IsRange() is false, this is ignored. * cache: vector from which cached expansion data will be read. - * output_script: the expanded scriptPubKeys will be put here. + * output_scripts: the expanded scriptPubKeys will be put here. * out: scripts and public keys necessary for solving the expanded scriptPubKeys will be put here (may be equal to provider). */ virtual bool ExpandFromCache(int pos, const std::vector<unsigned char>& cache, std::vector<CScript>& output_scripts, FlatSigningProvider& out) const = 0; diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp index 15fe1148fe..7119f56fc3 100644 --- a/src/test/util_tests.cpp +++ b/src/test/util_tests.cpp @@ -1532,17 +1532,9 @@ BOOST_AUTO_TEST_CASE(test_ToLower) BOOST_CHECK_EQUAL(ToLower(0), 0); BOOST_CHECK_EQUAL(ToLower('\xff'), '\xff'); - std::string testVector; - Downcase(testVector); - BOOST_CHECK_EQUAL(testVector, ""); - - testVector = "#HODL"; - Downcase(testVector); - BOOST_CHECK_EQUAL(testVector, "#hodl"); - - testVector = "\x00\xfe\xff"; - Downcase(testVector); - BOOST_CHECK_EQUAL(testVector, "\x00\xfe\xff"); + BOOST_CHECK_EQUAL(ToLower(""), ""); + BOOST_CHECK_EQUAL(ToLower("#HODL"), "#hodl"); + BOOST_CHECK_EQUAL(ToLower("\x00\xfe\xff"), "\x00\xfe\xff"); } BOOST_AUTO_TEST_CASE(test_ToUpper) @@ -1553,6 +1545,10 @@ BOOST_AUTO_TEST_CASE(test_ToUpper) BOOST_CHECK_EQUAL(ToUpper('{'), '{'); BOOST_CHECK_EQUAL(ToUpper(0), 0); BOOST_CHECK_EQUAL(ToUpper('\xff'), '\xff'); + + BOOST_CHECK_EQUAL(ToUpper(""), ""); + BOOST_CHECK_EQUAL(ToUpper("#hodl"), "#HODL"); + BOOST_CHECK_EQUAL(ToUpper("\x00\xfe\xff"), "\x00\xfe\xff"); } BOOST_AUTO_TEST_CASE(test_Capitalize) diff --git a/src/util/strencodings.cpp b/src/util/strencodings.cpp index 0acbb4f117..1e7d24c71c 100644 --- a/src/util/strencodings.cpp +++ b/src/util/strencodings.cpp @@ -546,9 +546,18 @@ bool ParseFixedPoint(const std::string &val, int decimals, int64_t *amount_out) return true; } -void Downcase(std::string& str) +std::string ToLower(const std::string& str) { - std::transform(str.begin(), str.end(), str.begin(), [](char c){return ToLower(c);}); + std::string r; + for (auto ch : str) r += ToLower((unsigned char)ch); + return r; +} + +std::string ToUpper(const std::string& str) +{ + std::string r; + for (auto ch : str) r += ToUpper((unsigned char)ch); + return r; } std::string Capitalize(std::string str) diff --git a/src/util/strencodings.h b/src/util/strencodings.h index 7c4364a082..e35b2ab857 100644 --- a/src/util/strencodings.h +++ b/src/util/strencodings.h @@ -199,6 +199,8 @@ bool ConvertBits(const O& outfn, I it, I end) { * Converts the given character to its lowercase equivalent. * This function is locale independent. It only converts uppercase * characters in the standard 7-bit ASCII range. + * This is a feature, not a limitation. + * * @param[in] c the character to convert to lowercase. * @return the lowercase equivalent of c; or the argument * if no conversion is possible. @@ -209,17 +211,22 @@ constexpr char ToLower(char c) } /** - * Converts the given string to its lowercase equivalent. + * Returns the lowercase equivalent of the given string. * This function is locale independent. It only converts uppercase * characters in the standard 7-bit ASCII range. - * @param[in,out] str the string to convert to lowercase. + * This is a feature, not a limitation. + * + * @param[in] str the string to convert to lowercase. + * @returns lowercased equivalent of str */ -void Downcase(std::string& str); +std::string ToLower(const std::string& str); /** * Converts the given character to its uppercase equivalent. * This function is locale independent. It only converts lowercase * characters in the standard 7-bit ASCII range. + * This is a feature, not a limitation. + * * @param[in] c the character to convert to uppercase. * @return the uppercase equivalent of c; or the argument * if no conversion is possible. @@ -230,12 +237,24 @@ constexpr char ToUpper(char c) } /** + * Returns the uppercase equivalent of the given string. + * This function is locale independent. It only converts lowercase + * characters in the standard 7-bit ASCII range. + * This is a feature, not a limitation. + * + * @param[in] str the string to convert to uppercase. + * @returns UPPERCASED EQUIVALENT OF str + */ +std::string ToUpper(const std::string& str); + +/** * Capitalizes the first character of the given string. - * This function is locale independent. It only capitalizes the - * first character of the argument if it has an uppercase equivalent - * in the standard 7-bit ASCII range. + * This function is locale independent. It only converts lowercase + * characters in the standard 7-bit ASCII range. + * This is a feature, not a limitation. + * * @param[in] str the string to capitalize. - * @return string with the first letter capitalized. + * @returns string with the first letter capitalized. */ std::string Capitalize(std::string str); diff --git a/src/util/system.cpp b/src/util/system.cpp index f8fcbc1206..f8bcc45a6a 100644 --- a/src/util/system.cpp +++ b/src/util/system.cpp @@ -388,7 +388,7 @@ bool ArgsManager::ParseParameters(int argc, const char* const argv[], std::strin key.erase(is_index); } #ifdef WIN32 - std::transform(key.begin(), key.end(), key.begin(), ToLower); + key = ToLower(key); if (key[0] == '/') key[0] = '-'; #endif diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp index b3269083ec..03acf23508 100644 --- a/src/wallet/wallet.cpp +++ b/src/wallet/wallet.cpp @@ -2150,16 +2150,21 @@ void CWallet::ReacceptWalletTransactions(interfaces::Chain::Lock& locked_chain) for (const std::pair<const int64_t, CWalletTx*>& item : mapSorted) { CWalletTx& wtx = *(item.second); std::string unused_err_string; - wtx.SubmitMemoryPoolAndRelay(unused_err_string, false); + wtx.SubmitMemoryPoolAndRelay(unused_err_string, false, locked_chain); } } -bool CWalletTx::SubmitMemoryPoolAndRelay(std::string& err_string, bool relay) +bool CWalletTx::SubmitMemoryPoolAndRelay(std::string& err_string, bool relay, interfaces::Chain::Lock& locked_chain) { // Can't relay if wallet is not broadcasting if (!pwallet->GetBroadcastTransactions()) return false; // Don't relay abandoned transactions if (isAbandoned()) return false; + // Don't try to submit coinbase transactions. These would fail anyway but would + // cause log spam. + if (IsCoinBase()) return false; + // Don't try to submit conflicted or confirmed transactions. + if (GetDepthInMainChain(locked_chain) != 0) return false; // Submit transaction to mempool for relay pwallet->WalletLogPrintf("Submitting wtx %s to mempool for relay\n", GetHash().ToString()); @@ -2374,11 +2379,12 @@ void CWallet::ResendWalletTransactions() // Relay transactions for (std::pair<const uint256, CWalletTx>& item : mapWallet) { CWalletTx& wtx = item.second; - // only rebroadcast unconfirmed txes older than 5 minutes before the - // last block was found + // Attempt to rebroadcast all txes more than 5 minutes older than + // the last block. SubmitMemoryPoolAndRelay() will not rebroadcast + // any confirmed or conflicting txs. if (wtx.nTimeReceived > m_best_block_time - 5 * 60) continue; std::string unused_err_string; - if (wtx.SubmitMemoryPoolAndRelay(unused_err_string, true)) ++submitted_tx_count; + if (wtx.SubmitMemoryPoolAndRelay(unused_err_string, true, *locked_chain)) ++submitted_tx_count; } } // locked_chain and cs_wallet @@ -3323,7 +3329,7 @@ bool CWallet::CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::ve if (fBroadcastTransactions) { std::string err_string; - if (!wtx.SubmitMemoryPoolAndRelay(err_string, true)) { + if (!wtx.SubmitMemoryPoolAndRelay(err_string, true, *locked_chain)) { WalletLogPrintf("CommitTransaction(): Transaction cannot be broadcast immediately, %s\n", err_string); // TODO: if we expect the failure to be long term or permanent, instead delete wtx from the wallet and return failure. } diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h index 3a45c1ccc5..cf388ad827 100644 --- a/src/wallet/wallet.h +++ b/src/wallet/wallet.h @@ -580,7 +580,7 @@ public: int64_t GetTxTime() const; // Pass this transaction to node for mempool insertion and relay to peers if flag set to true - bool SubmitMemoryPoolAndRelay(std::string& err_string, bool relay); + bool SubmitMemoryPoolAndRelay(std::string& err_string, bool relay, interfaces::Chain::Lock& locked_chain); // TODO: Remove "NO_THREAD_SAFETY_ANALYSIS" and replace it with the correct // annotation "EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)". The annotation diff --git a/test/functional/interface_zmq.py b/test/functional/interface_zmq.py index 8e58c85c15..1ba781c539 100755 --- a/test/functional/interface_zmq.py +++ b/test/functional/interface_zmq.py @@ -7,15 +7,15 @@ import struct from test_framework.address import ADDRESS_BCRT1_UNSPENDABLE from test_framework.test_framework import BitcoinTestFramework -from test_framework.messages import CTransaction -from test_framework.util import ( - assert_equal, - hash256, -) +from test_framework.messages import CTransaction, hash256 +from test_framework.util import assert_equal from io import BytesIO ADDRESS = "tcp://127.0.0.1:28332" +def hash256_reversed(byte_str): + return hash256(byte_str)[::-1] + class ZMQSubscriber: def __init__(self, socket, topic): self.sequence = 0 @@ -103,7 +103,7 @@ class ZMQTest (BitcoinTestFramework): # Should receive the generated raw block. block = self.rawblock.receive() - assert_equal(genhashes[x], hash256(block[:80]).hex()) + assert_equal(genhashes[x], hash256_reversed(block[:80]).hex()) if self.is_wallet_compiled(): self.log.info("Wait for tx from second node") @@ -116,7 +116,7 @@ class ZMQTest (BitcoinTestFramework): # Should receive the broadcasted raw transaction. hex = self.rawtx.receive() - assert_equal(payment_txid, hash256(hex).hex()) + assert_equal(payment_txid, hash256_reversed(hex).hex()) self.log.info("Test the getzmqnotifications RPC") diff --git a/test/functional/test_framework/util.py b/test/functional/test_framework/util.py index 8730157c74..7beddc6407 100644 --- a/test/functional/test_framework/util.py +++ b/test/functional/test_framework/util.py @@ -7,7 +7,6 @@ from base64 import b64encode from binascii import unhexlify from decimal import Decimal, ROUND_DOWN -import hashlib import inspect import json import logging @@ -183,12 +182,6 @@ def check_json_precision(): def count_bytes(hex_string): return len(bytearray.fromhex(hex_string)) -def hash256(byte_str): - sha256 = hashlib.sha256() - sha256.update(byte_str) - sha256d = hashlib.sha256() - sha256d.update(sha256.digest()) - return sha256d.digest()[::-1] def hex_str_to_bytes(hex_str): return unhexlify(hex_str.encode('ascii')) |