diff options
Diffstat (limited to 'src/main.h')
-rw-r--r-- | src/main.h | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/src/main.h b/src/main.h index fc9913b7c6..dc833673ae 100644 --- a/src/main.h +++ b/src/main.h @@ -49,8 +49,6 @@ class CValidationState; struct CBlockTemplate; struct CNodeStateStats; -/** The maximum allowed size for a serialized block, in bytes (network rule) */ -static const unsigned int MAX_BLOCK_SIZE = 1000000; /** Default for -blockmaxsize and -blockminsize, which control the range of sizes the mining code will create **/ static const unsigned int DEFAULT_BLOCK_MAX_SIZE = 750000; static const unsigned int DEFAULT_BLOCK_MIN_SIZE = 0; @@ -352,110 +350,6 @@ public: } }; -/** Data structure that represents a partial merkle tree. - * - * It represents a subset of the txid's of a known block, in a way that - * allows recovery of the list of txid's and the merkle root, in an - * authenticated way. - * - * The encoding works as follows: we traverse the tree in depth-first order, - * storing a bit for each traversed node, signifying whether the node is the - * parent of at least one matched leaf txid (or a matched txid itself). In - * case we are at the leaf level, or this bit is 0, its merkle node hash is - * stored, and its children are not explorer further. Otherwise, no hash is - * stored, but we recurse into both (or the only) child branch. During - * decoding, the same depth-first traversal is performed, consuming bits and - * hashes as they written during encoding. - * - * The serialization is fixed and provides a hard guarantee about the - * encoded size: - * - * SIZE <= 10 + ceil(32.25*N) - * - * Where N represents the number of leaf nodes of the partial tree. N itself - * is bounded by: - * - * N <= total_transactions - * N <= 1 + matched_transactions*tree_height - * - * The serialization format: - * - uint32 total_transactions (4 bytes) - * - varint number of hashes (1-3 bytes) - * - uint256[] hashes in depth-first order (<= 32*N bytes) - * - varint number of bytes of flag bits (1-3 bytes) - * - byte[] flag bits, packed per 8 in a byte, least significant bit first (<= 2*N-1 bits) - * The size constraints follow from this. - */ -class CPartialMerkleTree -{ -protected: - /** the total number of transactions in the block */ - unsigned int nTransactions; - - /** node-is-parent-of-matched-txid bits */ - std::vector<bool> vBits; - - /** txids and internal hashes */ - std::vector<uint256> vHash; - - /** flag set when encountering invalid data */ - bool fBad; - - /** helper function to efficiently calculate the number of nodes at given height in the merkle tree */ - unsigned int CalcTreeWidth(int height) { - return (nTransactions+(1 << height)-1) >> height; - } - - /** calculate the hash of a node in the merkle tree (at leaf level: the txid's themselves) */ - uint256 CalcHash(int height, unsigned int pos, const std::vector<uint256> &vTxid); - - /** recursive function that traverses tree nodes, storing the data as bits and hashes */ - void TraverseAndBuild(int height, unsigned int pos, const std::vector<uint256> &vTxid, const std::vector<bool> &vMatch); - - /** - * recursive function that traverses tree nodes, consuming the bits and hashes produced by TraverseAndBuild. - * it returns the hash of the respective node. - */ - uint256 TraverseAndExtract(int height, unsigned int pos, unsigned int &nBitsUsed, unsigned int &nHashUsed, std::vector<uint256> &vMatch); - -public: - - /** serialization implementation */ - ADD_SERIALIZE_METHODS; - - template <typename Stream, typename Operation> - inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { - READWRITE(nTransactions); - READWRITE(vHash); - std::vector<unsigned char> vBytes; - if (ser_action.ForRead()) { - READWRITE(vBytes); - CPartialMerkleTree &us = *(const_cast<CPartialMerkleTree*>(this)); - us.vBits.resize(vBytes.size() * 8); - for (unsigned int p = 0; p < us.vBits.size(); p++) - us.vBits[p] = (vBytes[p / 8] & (1 << (p % 8))) != 0; - us.fBad = false; - } else { - vBytes.resize((vBits.size()+7)/8); - for (unsigned int p = 0; p < vBits.size(); p++) - vBytes[p / 8] |= vBits[p] << (p % 8); - READWRITE(vBytes); - } - } - - /** Construct a partial merkle tree from a list of transaction id's, and a mask that selects a subset of them */ - CPartialMerkleTree(const std::vector<uint256> &vTxid, const std::vector<bool> &vMatch); - - CPartialMerkleTree(); - - /** - * extract the matching txid's represented by this partial merkle tree. - * returns the merkle root, or 0 in case of failure - */ - uint256 ExtractMatches(std::vector<uint256> &vMatch); -}; - - /** Functions for disk access for blocks */ bool WriteBlockToDisk(CBlock& block, CDiskBlockPos& pos); @@ -646,38 +540,6 @@ struct CBlockTemplate -/** - * Used to relay blocks as header + vector<merkle branch> - * to filtered nodes. - */ -class CMerkleBlock -{ -public: - /** Public only for unit testing */ - CBlockHeader header; - CPartialMerkleTree txn; - -public: - /** Public only for unit testing and relay testing (not relayed) */ - std::vector<std::pair<unsigned int, uint256> > vMatchedTxn; - - /** - * Create from a CBlock, filtering transactions according to filter - * Note that this will call IsRelevantAndUpdate on the filter for each transaction, - * thus the filter will likely be modified. - */ - CMerkleBlock(const CBlock& block, CBloomFilter& filter); - - ADD_SERIALIZE_METHODS; - - template <typename Stream, typename Operation> - inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) { - READWRITE(header); - READWRITE(txn); - } -}; - - class CValidationInterface { protected: virtual void SyncTransaction(const CTransaction &tx, const CBlock *pblock) {}; |