diff options
Diffstat (limited to 'src/consensus')
-rw-r--r-- | src/consensus/consensus.h | 14 | ||||
-rw-r--r-- | src/consensus/merkle.cpp | 4 | ||||
-rw-r--r-- | src/consensus/merkle.h | 6 | ||||
-rw-r--r-- | src/consensus/tx_verify.cpp | 2 | ||||
-rw-r--r-- | src/consensus/validation.h | 17 |
5 files changed, 29 insertions, 14 deletions
diff --git a/src/consensus/consensus.h b/src/consensus/consensus.h index 58b2ed4b3e..ddd4ee9fab 100644 --- a/src/consensus/consensus.h +++ b/src/consensus/consensus.h @@ -6,25 +6,23 @@ #ifndef BITCOIN_CONSENSUS_CONSENSUS_H #define BITCOIN_CONSENSUS_CONSENSUS_H +#include <stdlib.h> #include <stdint.h> /** The maximum allowed size for a serialized block, in bytes (only for buffer size limits) */ static const unsigned int MAX_BLOCK_SERIALIZED_SIZE = 4000000; /** The maximum allowed weight for a block, see BIP 141 (network rule) */ static const unsigned int MAX_BLOCK_WEIGHT = 4000000; -/** - * The maximum allowed size for a block excluding witness data, in bytes (network rule). - * This parameter is largely superfluous because it is directly implied by the above block - * weight limit, even when BIP 141 is not active. It continues to exist for use in - * various early tests that run before the witness data has been checked. - * All tests related to it could be removed without breaking consensus compatibility. - */ -static const unsigned int MAX_BLOCK_BASE_SIZE = 1000000; /** The maximum allowed number of signature check operations in a block (network rule) */ static const int64_t MAX_BLOCK_SIGOPS_COST = 80000; /** Coinbase transaction outputs can only be spent after this number of new blocks (network rule) */ static const int COINBASE_MATURITY = 100; +static const int WITNESS_SCALE_FACTOR = 4; + +static const size_t MIN_TRANSACTION_WEIGHT = WITNESS_SCALE_FACTOR * 60; // 60 is the lower bound for the size of a valid serialized CTransaction +static const size_t MIN_SERIALIZABLE_TRANSACTION_WEIGHT = WITNESS_SCALE_FACTOR * 10; // 10 is the lower bound for the size of a serialized CTransaction + /** Flags for nSequence and nLockTime locks */ enum { /* Interpret sequence numbers as relative lock-time constraints. */ diff --git a/src/consensus/merkle.cpp b/src/consensus/merkle.cpp index 1ce5a9d87e..798ce4b5fd 100644 --- a/src/consensus/merkle.cpp +++ b/src/consensus/merkle.cpp @@ -132,13 +132,13 @@ static void MerkleComputation(const std::vector<uint256>& leaves, uint256* proot uint256 ComputeMerkleRoot(const std::vector<uint256>& leaves, bool* mutated) { uint256 hash; - MerkleComputation(leaves, &hash, mutated, -1, NULL); + MerkleComputation(leaves, &hash, mutated, -1, nullptr); return hash; } std::vector<uint256> ComputeMerkleBranch(const std::vector<uint256>& leaves, uint32_t position) { std::vector<uint256> ret; - MerkleComputation(leaves, NULL, NULL, position, &ret); + MerkleComputation(leaves, nullptr, nullptr, position, &ret); return ret; } diff --git a/src/consensus/merkle.h b/src/consensus/merkle.h index 194aea9b75..33764c7460 100644 --- a/src/consensus/merkle.h +++ b/src/consensus/merkle.h @@ -12,7 +12,7 @@ #include "primitives/block.h" #include "uint256.h" -uint256 ComputeMerkleRoot(const std::vector<uint256>& leaves, bool* mutated = NULL); +uint256 ComputeMerkleRoot(const std::vector<uint256>& leaves, bool* mutated = nullptr); std::vector<uint256> ComputeMerkleBranch(const std::vector<uint256>& leaves, uint32_t position); uint256 ComputeMerkleRootFromBranch(const uint256& leaf, const std::vector<uint256>& branch, uint32_t position); @@ -20,13 +20,13 @@ uint256 ComputeMerkleRootFromBranch(const uint256& leaf, const std::vector<uint2 * Compute the Merkle root of the transactions in a block. * *mutated is set to true if a duplicated subtree was found. */ -uint256 BlockMerkleRoot(const CBlock& block, bool* mutated = NULL); +uint256 BlockMerkleRoot(const CBlock& block, bool* mutated = nullptr); /* * Compute the Merkle root of the witness transactions in a block. * *mutated is set to true if a duplicated subtree was found. */ -uint256 BlockWitnessMerkleRoot(const CBlock& block, bool* mutated = NULL); +uint256 BlockWitnessMerkleRoot(const CBlock& block, bool* mutated = nullptr); /* * Compute the Merkle branch for the tree of transactions in a block, for a diff --git a/src/consensus/tx_verify.cpp b/src/consensus/tx_verify.cpp index f2f85edad9..70aa9d7006 100644 --- a/src/consensus/tx_verify.cpp +++ b/src/consensus/tx_verify.cpp @@ -164,7 +164,7 @@ bool CheckTransaction(const CTransaction& tx, CValidationState &state, bool fChe if (tx.vout.empty()) return state.DoS(10, false, REJECT_INVALID, "bad-txns-vout-empty"); // Size limits (this doesn't take the witness into account, as that hasn't been checked for malleability) - if (::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) > MAX_BLOCK_BASE_SIZE) + if (::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) * WITNESS_SCALE_FACTOR > MAX_BLOCK_WEIGHT) return state.DoS(100, false, REJECT_INVALID, "bad-txns-oversize"); // Check for negative or overflow output values diff --git a/src/consensus/validation.h b/src/consensus/validation.h index 8fc3ef1b66..b6740c9d9f 100644 --- a/src/consensus/validation.h +++ b/src/consensus/validation.h @@ -7,6 +7,10 @@ #define BITCOIN_CONSENSUS_VALIDATION_H #include <string> +#include "version.h" +#include "consensus/consensus.h" +#include "primitives/transaction.h" +#include "primitives/block.h" /** "reject" message codes */ static const unsigned char REJECT_MALFORMED = 0x01; @@ -85,4 +89,17 @@ public: std::string GetDebugMessage() const { return strDebugMessage; } }; +// These implement the weight = (stripped_size * 4) + witness_size formula, +// using only serialization with and without witness data. As witness_size +// is equal to total_size - stripped_size, this formula is identical to: +// weight = (stripped_size * 3) + total_size. +static inline int64_t GetTransactionWeight(const CTransaction& tx) +{ + return ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) * (WITNESS_SCALE_FACTOR - 1) + ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION); +} +static inline int64_t GetBlockWeight(const CBlock& block) +{ + return ::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) * (WITNESS_SCALE_FACTOR - 1) + ::GetSerializeSize(block, SER_NETWORK, PROTOCOL_VERSION); +} + #endif // BITCOIN_CONSENSUS_VALIDATION_H |