move the rct commitments to the output_amounts database
Since these are needed at the same time as the output pubkeys, this is a whole lot faster, and takes less space. Only outputs of 0 amount store the commitment. When reading other outputs, a fake commitment is regenerated on the fly. This avoids having to rewrite the database to add space for fake commitments for existing outputs. This code relies on two things: - LMDB must support fixed size records per key, rather than per database (ie, all records on key 0 are the same size, all records for non 0 keys are same size, but records from key 0 and non 0 keys do have different sizes). - the commitment must be directly after the rest of the data in outkey and output_data_t.
This commit is contained in:
moneromooo-monero
parent
6d0e47148b
commit
59a66e209a
8 changed files with 63 additions and 195 deletions
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@ -361,7 +361,7 @@ void BlockchainBDB::remove_transaction_data(const crypto::hash& tx_hash, const t
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throw1(DB_ERROR("Failed to add removal of tx outputs to db transaction"));
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}
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void BlockchainBDB::add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time)
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void BlockchainBDB::add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time, const rct::key *commitment)
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{
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LOG_PRINT_L3("BlockchainBDB::" << __func__);
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check_open();
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@ -364,7 +364,7 @@ private:
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virtual void remove_transaction_data(const crypto::hash& tx_hash, const transaction& tx);
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virtual void add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time);
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virtual void add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time, const rct::key *commitment);
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virtual void remove_output(const tx_out& tx_output);
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@ -90,9 +90,8 @@ void BlockchainDB::add_transaction(const crypto::hash& blk_hash, const transacti
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// we need the index
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for (uint64_t i = 0; i < tx.vout.size(); ++i)
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{
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amount_output_indices.push_back(add_output(tx_hash, tx.vout[i], i, tx.unlock_time));
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if (tx.version > 1 && tx.vout[i].amount == 0)
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add_rct_commitment(tx.rct_signatures.outPk[i].mask);
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amount_output_indices.push_back(add_output(tx_hash, tx.vout[i], i, tx.unlock_time,
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tx.version > 1 ? &tx.rct_signatures.outPk[i].mask : NULL));
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}
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add_tx_amount_output_indices(tx_id, amount_output_indices);
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}
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@ -110,6 +110,7 @@ struct output_data_t
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crypto::public_key pubkey; //!< the output's public key (for spend verification)
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uint64_t unlock_time; //!< the output's unlock time (or height)
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uint64_t height; //!< the height of the block which created the output
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rct::key commitment; //!< the output's amount commitment (for spend verification)
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};
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#pragma pack(pop)
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@ -407,9 +408,10 @@ private:
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* @param tx_output the output
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* @param local_index index of the output in its transaction
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* @param unlock_time unlock time/height of the output
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* @param commitment the rct commitment to the output amount
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* @return amount output index
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*/
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virtual uint64_t add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time) = 0;
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virtual uint64_t add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time, const rct::key *commitment) = 0;
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/**
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* @brief store amount output indices for a tx's outputs
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@ -1199,39 +1201,6 @@ public:
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*/
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virtual bool has_key_image(const crypto::key_image& img) const = 0;
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/**
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* @brief returns the number of ringct outputs in the database
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*
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* @return the number of ringct outputs in the database
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*/
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virtual uint64_t get_num_rct_outputs() const = 0;
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/**
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* @brief returns the commitment for a given ringct output
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*
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* Throws OUTPUT_DNE if the index is out of range
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* Throws DB_ERROR on other error
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*
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* @return the commitment for the given index
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*/
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virtual rct::key get_rct_commitment(uint64_t idx) const = 0;
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/**
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* @brief Adds a new ringct output with the given commitment
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*
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* Throws DB_ERROR if the addition fails
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*
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* @return the index of the newly added record
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*/
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virtual uint64_t add_rct_commitment(const rct::key &commitment) = 0;
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/**
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* @brief Remove a ringct output with the given index
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*
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* Throws DB_ERROR if the removal fails
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*/
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virtual void remove_rct_commitment(uint64_t idx) = 0;
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/**
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* @brief runs a function over all key images stored
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*
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@ -51,6 +51,13 @@ using epee::string_tools::pod_to_hex;
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namespace
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{
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struct pre_rct_output_data_t
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{
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crypto::public_key pubkey; //!< the output's public key (for spend verification)
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uint64_t unlock_time; //!< the output's unlock time (or height)
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uint64_t height; //!< the height of the block which created the output
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};
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template <typename T>
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inline void throw0(const T &e)
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{
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@ -155,8 +162,6 @@ int compare_string(const MDB_val *a, const MDB_val *b)
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*
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* spent_keys input hash -
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*
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* rct_commitments input ID {commitment key}
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*
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* Note: where the data items are of uniform size, DUPFIXED tables have
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* been used to save space. In most of these cases, a dummy "zerokval"
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* key is used when accessing the table; the Key listed above will be
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@ -177,8 +182,6 @@ const char* const LMDB_OUTPUT_TXS = "output_txs";
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const char* const LMDB_OUTPUT_AMOUNTS = "output_amounts";
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const char* const LMDB_SPENT_KEYS = "spent_keys";
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const char* const LMDB_RCT_COMMITMENTS = "rct_commitments";
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const char* const LMDB_HF_STARTING_HEIGHTS = "hf_starting_heights";
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const char* const LMDB_HF_VERSIONS = "hf_versions";
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@ -246,6 +249,12 @@ typedef struct txindex {
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tx_data_t data;
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} txindex;
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typedef struct pre_rct_outkey {
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uint64_t amount_index;
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uint64_t output_id;
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pre_rct_output_data_t data;
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} pre_rct_outkey;
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typedef struct outkey {
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uint64_t amount_index;
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uint64_t output_id;
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@ -769,7 +778,8 @@ void BlockchainLMDB::remove_transaction_data(const crypto::hash& tx_hash, const
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uint64_t BlockchainLMDB::add_output(const crypto::hash& tx_hash,
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const tx_out& tx_output,
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const uint64_t& local_index,
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const uint64_t unlock_time)
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const uint64_t unlock_time,
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const rct::key *commitment)
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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check_open();
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@ -782,6 +792,8 @@ uint64_t BlockchainLMDB::add_output(const crypto::hash& tx_hash,
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if (tx_output.target.type() != typeid(txout_to_key))
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throw0(DB_ERROR("Wrong output type: expected txout_to_key"));
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if (tx_output.amount == 0 && !commitment)
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throw0(DB_ERROR("RCT output without commitment"));
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outtx ot = {m_num_outputs, tx_hash, local_index};
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MDB_val_set(vot, ot);
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@ -810,8 +822,16 @@ uint64_t BlockchainLMDB::add_output(const crypto::hash& tx_hash,
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ok.data.pubkey = boost::get < txout_to_key > (tx_output.target).key;
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ok.data.unlock_time = unlock_time;
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ok.data.height = m_height;
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if (tx_output.amount == 0)
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{
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ok.data.commitment = *commitment;
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data.mv_size = sizeof(ok);
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}
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else
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{
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data.mv_size = sizeof(pre_rct_outkey);
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}
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data.mv_data = &ok;
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data.mv_size = sizeof(ok);
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if ((result = mdb_cursor_put(m_cur_output_amounts, &val_amount, &data, MDB_APPENDDUP)))
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throw0(DB_ERROR(lmdb_error("Failed to add output pubkey to db transaction: ", result).c_str()));
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@ -861,8 +881,6 @@ void BlockchainLMDB::remove_tx_outputs(const uint64_t tx_id, const transaction&
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{
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const tx_out tx_output = tx.vout[i-1];
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remove_output(tx_output.amount, amount_output_indices[i-1]);
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if (tx_output.amount == 0)
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remove_rct_commitment(amount_output_indices[i-1]);
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}
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}
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@ -1090,8 +1108,6 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
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lmdb_db_open(txn, LMDB_SPENT_KEYS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_spent_keys, "Failed to open db handle for m_spent_keys");
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lmdb_db_open(txn, LMDB_RCT_COMMITMENTS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_rct_commitments, "Failed to open db handle for m_rct_commitments");
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// this subdb is dropped on sight, so it may not be present when we open the DB.
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// Since we use MDB_CREATE, we'll get an exception if we open read-only and it does not exist.
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// So we don't open for read-only, and also not drop below. It is not used elsewhere.
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@ -1261,8 +1277,6 @@ void BlockchainLMDB::reset()
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throw0(DB_ERROR(lmdb_error("Failed to drop m_output_amounts: ", result).c_str()));
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if (auto result = mdb_drop(txn, m_spent_keys, 0))
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throw0(DB_ERROR(lmdb_error("Failed to drop m_spent_keys: ", result).c_str()));
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if (auto result = mdb_drop(txn, m_rct_commitments, 0))
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throw0(DB_ERROR(lmdb_error("Failed to drop m_rct_commitments: ", result).c_str()));
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(void)mdb_drop(txn, m_hf_starting_heights, 0); // this one is dropped in new code
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if (auto result = mdb_drop(txn, m_hf_versions, 0))
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throw0(DB_ERROR(lmdb_error("Failed to drop m_hf_versions: ", result).c_str()));
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@ -1943,8 +1957,19 @@ output_data_t BlockchainLMDB::get_output_key(const uint64_t& amount, const uint6
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throw1(OUTPUT_DNE("Attempting to get output pubkey by index, but key does not exist"));
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else if (get_result)
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throw0(DB_ERROR("Error attempting to retrieve an output pubkey from the db"));
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outkey *okp = (outkey *)v.mv_data;
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output_data_t ret = okp->data;
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output_data_t ret;
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if (amount == 0)
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{
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const outkey *okp = (const outkey *)v.mv_data;
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ret = okp->data;
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}
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else
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{
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const pre_rct_outkey *okp = (const pre_rct_outkey *)v.mv_data;
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memcpy(&ret, &okp->data, sizeof(pre_rct_output_data_t));;
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ret.commitment = rct::zeroCommit(amount);
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}
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TXN_POSTFIX_RDONLY();
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return ret;
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}
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@ -2567,8 +2592,18 @@ void BlockchainLMDB::get_output_key(const uint64_t &amount, const std::vector<ui
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else if (get_result)
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throw0(DB_ERROR(lmdb_error("Error attempting to retrieve an output pubkey from the db", get_result).c_str()));
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outkey *okp = (outkey *)v.mv_data;
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output_data_t data = okp->data;
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output_data_t data;
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if (amount == 0)
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{
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const outkey *okp = (const outkey *)v.mv_data;
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data = okp->data;
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}
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else
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{
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const pre_rct_outkey *okp = (const pre_rct_outkey *)v.mv_data;
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memcpy(&data, &okp->data, sizeof(pre_rct_output_data_t));
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data.commitment = rct::zeroCommit(amount);
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}
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outputs.push_back(data);
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}
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@ -2742,106 +2777,6 @@ uint8_t BlockchainLMDB::get_hard_fork_version(uint64_t height) const
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return ret;
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}
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uint64_t BlockchainLMDB::get_num_rct_outputs() const
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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check_open();
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TXN_PREFIX_RDONLY();
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RCURSOR(rct_commitments);
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mdb_size_t num_outputs = 0;
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MDB_stat ms;
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auto result = mdb_stat(m_txn, m_rct_commitments, &ms);
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if (result == MDB_SUCCESS)
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{
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num_outputs = ms.ms_entries;
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}
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else if (result == MDB_NOTFOUND)
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{
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num_outputs = 0;
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}
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else
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{
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throw0(DB_ERROR("DB error attempting to get number of ringct outputs"));
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}
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TXN_POSTFIX_RDONLY();
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return num_outputs;
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}
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rct::key BlockchainLMDB::get_rct_commitment(uint64_t idx) const
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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check_open();
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TXN_PREFIX_RDONLY();
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RCURSOR(rct_commitments);
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MDB_val_set(val_key, idx);
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MDB_val val_ret;
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auto result = mdb_cursor_get(m_cur_rct_commitments, &val_key, &val_ret, MDB_SET);
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if (result == MDB_NOTFOUND)
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throw0(OUTPUT_DNE(lmdb_error("Error attempting to retrieve rct commitment for " + boost::lexical_cast<std::string>(idx) + " from the db: ", result).c_str()));
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else if (result)
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throw0(DB_ERROR(lmdb_error("Error attempting to retrieve rct commitment for " + boost::lexical_cast<std::string>(idx) + " from the db: ", result).c_str()));
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rct::key commitment = *(const rct::key*)val_ret.mv_data;
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TXN_POSTFIX_RDONLY();
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return commitment;
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}
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void BlockchainLMDB::remove_rct_commitment(uint64_t idx)
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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check_open();
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mdb_txn_cursors *m_cursors = &m_wcursors;
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CURSOR(rct_commitments);
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MDB_val_set(val_key, idx);
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MDB_val val_ret;
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auto result = mdb_cursor_get(m_cur_rct_commitments, &val_key, &val_ret, MDB_SET);
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if (result == MDB_NOTFOUND)
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throw0(OUTPUT_DNE(lmdb_error("Error attempting to retrieve rct commitment for " + boost::lexical_cast<std::string>(idx) + " from the db: ", result).c_str()));
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else if (result)
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throw0(DB_ERROR(lmdb_error("Error attempting to retrieve rct commitment for " + boost::lexical_cast<std::string>(idx) + " from the db: ", result).c_str()));
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result = mdb_cursor_del(m_cur_rct_commitments, 0);
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if (result)
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throw0(DB_ERROR(lmdb_error("Error attempting to remove rct commitment for " + boost::lexical_cast<std::string>(idx) + " from the db: ", result).c_str()));
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}
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uint64_t BlockchainLMDB::add_rct_commitment(const rct::key &commitment)
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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check_open();
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mdb_txn_cursors *m_cursors = &m_wcursors;
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CURSOR(rct_commitments);
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uint64_t num_outputs = 0;
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MDB_stat ms;
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auto result = mdb_stat(*m_write_txn, m_rct_commitments, &ms);
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if (result == MDB_SUCCESS)
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num_outputs = ms.ms_entries;
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else if (result == MDB_NOTFOUND)
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num_outputs = 0;
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else
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throw0(DB_ERROR("DB error attempting to get number of ringct outputs"));
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MDB_val_set(val_key, num_outputs);
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MDB_val val_value;
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val_value.mv_size = sizeof(rct::key);
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val_value.mv_data = (void*)&commitment;
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result = mdb_cursor_put(m_cur_rct_commitments, (MDB_val *)&val_key, &val_value, 0);
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if (result)
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throw0(DB_ERROR(lmdb_error("Failed to add rct output to db transaction: ", result).c_str()));
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return num_outputs;
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}
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bool BlockchainLMDB::is_read_only() const
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{
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unsigned int flags;
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@ -55,8 +55,6 @@ typedef struct mdb_txn_cursors
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MDB_cursor *m_txc_spent_keys;
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MDB_cursor *m_txc_rct_commitments;
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MDB_cursor *m_txc_hf_versions;
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} mdb_txn_cursors;
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@ -69,7 +67,6 @@ typedef struct mdb_txn_cursors
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#define m_cur_tx_indices m_cursors->m_txc_tx_indices
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#define m_cur_tx_outputs m_cursors->m_txc_tx_outputs
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#define m_cur_spent_keys m_cursors->m_txc_spent_keys
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#define m_cur_rct_commitments m_cursors->m_txc_rct_commitments
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#define m_cur_hf_versions m_cursors->m_txc_hf_versions
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typedef struct mdb_rflags
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@ -84,7 +81,6 @@ typedef struct mdb_rflags
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bool m_rf_tx_indices;
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bool m_rf_tx_outputs;
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bool m_rf_spent_keys;
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bool m_rf_rct_commitments;
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bool m_rf_hf_versions;
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} mdb_rflags;
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@ -236,11 +232,6 @@ public:
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virtual bool has_key_image(const crypto::key_image& img) const;
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||||
|
||||
virtual uint64_t get_num_rct_outputs() const;
|
||||
virtual rct::key get_rct_commitment(uint64_t idx) const;
|
||||
virtual uint64_t add_rct_commitment(const rct::key &commitment);
|
||||
virtual void remove_rct_commitment(uint64_t idx);
|
||||
|
||||
virtual bool for_all_key_images(std::function<bool(const crypto::key_image&)>) const;
|
||||
virtual bool for_all_blocks(std::function<bool(uint64_t, const crypto::hash&, const cryptonote::block&)>) const;
|
||||
virtual bool for_all_transactions(std::function<bool(const crypto::hash&, const cryptonote::transaction&)>) const;
|
||||
|
|
@ -302,7 +293,8 @@ private:
|
|||
virtual uint64_t add_output(const crypto::hash& tx_hash,
|
||||
const tx_out& tx_output,
|
||||
const uint64_t& local_index,
|
||||
const uint64_t unlock_time
|
||||
const uint64_t unlock_time,
|
||||
const rct::key *commitment
|
||||
);
|
||||
|
||||
virtual void add_tx_amount_output_indices(const uint64_t tx_id,
|
||||
|
|
@ -369,8 +361,6 @@ private:
|
|||
|
||||
MDB_dbi m_spent_keys;
|
||||
|
||||
MDB_dbi m_rct_commitments;
|
||||
|
||||
MDB_dbi m_hf_starting_heights;
|
||||
MDB_dbi m_hf_versions;
|
||||
|
||||
|
|
|
|||
|
|
@ -207,21 +207,8 @@ bool Blockchain::scan_outputkeys_for_indexes(size_t tx_version, const txin_to_ke
|
|||
else
|
||||
output_index = m_db->get_output_key(tx_in_to_key.amount, i);
|
||||
|
||||
rct::key commitment;
|
||||
if (tx_version > 1)
|
||||
{
|
||||
if (tx_in_to_key.amount == 0)
|
||||
commitment = m_db->get_rct_commitment(i);
|
||||
else
|
||||
commitment = rct::zeroCommit(tx_in_to_key.amount);
|
||||
}
|
||||
else
|
||||
{
|
||||
rct::identity(commitment);
|
||||
}
|
||||
|
||||
// call to the passed boost visitor to grab the public key for the output
|
||||
if (!vis.handle_output(output_index.unlock_time, output_index.pubkey, commitment))
|
||||
if (!vis.handle_output(output_index.unlock_time, output_index.pubkey, output_index.commitment))
|
||||
{
|
||||
LOG_PRINT_L0("Failed to handle_output for output no = " << count << ", with absolute offset " << i);
|
||||
return false;
|
||||
|
|
@ -1633,15 +1620,7 @@ void Blockchain::add_out_to_get_rct_random_outs(std::list<COMMAND_RPC_GET_RANDOM
|
|||
oen.global_amount_index = i;
|
||||
output_data_t data = m_db->get_output_key(amount, i);
|
||||
oen.out_key = data.pubkey;
|
||||
if (amount == 0)
|
||||
{
|
||||
oen.commitment = m_db->get_rct_commitment(i);
|
||||
}
|
||||
else
|
||||
{
|
||||
// not a rct output, make a fake commitment with zero key
|
||||
oen.commitment = rct::zeroCommit(amount);
|
||||
}
|
||||
oen.commitment = data.commitment;
|
||||
}
|
||||
//------------------------------------------------------------------
|
||||
// This function takes an RPC request for mixins and creates an RPC response
|
||||
|
|
|
|||
|
|
@ -96,14 +96,10 @@ public:
|
|||
virtual void remove_block() { blocks.pop_back(); }
|
||||
virtual uint64_t add_transaction_data(const crypto::hash& blk_hash, const transaction& tx, const crypto::hash& tx_hash) {return 0;}
|
||||
virtual void remove_transaction_data(const crypto::hash& tx_hash, const transaction& tx) {}
|
||||
virtual uint64_t add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time) {return 0;}
|
||||
virtual uint64_t add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time, const rct::key *commitment) {return 0;}
|
||||
virtual void add_tx_amount_output_indices(const uint64_t tx_index, const std::vector<uint64_t>& amount_output_indices) {}
|
||||
virtual void add_spent_key(const crypto::key_image& k_image) {}
|
||||
virtual void remove_spent_key(const crypto::key_image& k_image) {}
|
||||
virtual uint64_t get_num_rct_outputs() const { return 0; }
|
||||
virtual rct::key get_rct_commitment(uint64_t idx) const { return rct::key(); }
|
||||
virtual uint64_t add_rct_commitment(const rct::key &commitment) { return 0; }
|
||||
virtual void remove_rct_commitment(uint64_t idx) {}
|
||||
|
||||
virtual bool for_all_key_images(std::function<bool(const crypto::key_image&)>) const { return true; }
|
||||
virtual bool for_all_blocks(std::function<bool(uint64_t, const crypto::hash&, const cryptonote::block&)>) const { return true; }
|
||||
|
|
|
|||
Loading…
Reference in a new issue