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Fixes a bug with getting output metadata from BlockchainDB

Browse Source 
Thanks to moneromooo-monero for spotting the bug.
This commit is contained in:
Thomas Winget 2014-12-14 15:20:41 -05:00 committed by warptangent
parent c3fa07b44b
commit c50cd95674
4 changed files with 37 additions and 17 deletions
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46
src/cryptonote_core/BlockchainDB_impl/db_lmdb.cpp
View File

@ -1208,6 +1208,35 @@ tx_out BlockchainLMDB::get_output(const uint64_t& index) const
return output_from_blob(b);
}
tx_out_index BlockchainLMDB::get_output_tx_and_index_from_global(const uint64_t& index) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
MDB_val_copy<uint64_t> k(index);
MDB_val v;
auto get_result = mdb_get(txn, m_output_txs, &k, &v);
if (get_result == MDB_NOTFOUND)
throw1(OUTPUT_DNE("output with given index not in db"));
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch output tx hash"));
crypto::hash tx_hash = *(crypto::hash*)v.mv_data;
get_result = mdb_get(txn, m_output_indices, &k, &v);
if (get_result == MDB_NOTFOUND)
throw1(OUTPUT_DNE("output with given index not in db"));
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch output tx index"));
return tx_out_index(tx_hash, *(const uint64_t *)v.mv_data);
}
tx_out_index BlockchainLMDB::get_output_tx_and_index(const uint64_t& amount, const uint64_t& index) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
@ -1249,24 +1278,9 @@ tx_out_index BlockchainLMDB::get_output_tx_and_index(const uint64_t& amount, con
cur.close();
k = MDB_val_copy<uint64_t>(glob_index);
auto get_result = mdb_get(txn, m_output_txs, &k, &v);
if (get_result == MDB_NOTFOUND)
throw1(OUTPUT_DNE("output with given index not in db"));
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch output tx hash"));
crypto::hash tx_hash = *(crypto::hash*)v.mv_data;
get_result = mdb_get(txn, m_output_indices, &k, &v);
if (get_result == MDB_NOTFOUND)
throw1(OUTPUT_DNE("output with given index not in db"));
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch output tx index"));
txn.commit();
return tx_out_index(tx_hash, *(const uint64_t *)v.mv_data);
return get_output_tx_and_index_from_global(glob_index);
}
std::vector<uint64_t> BlockchainLMDB::get_tx_output_indices(const crypto::hash& h) const

2
src/cryptonote_core/BlockchainDB_impl/db_lmdb.h
View File

@ -161,6 +161,8 @@ public:
*/
tx_out get_output(const uint64_t& index) const;
virtual tx_out_index get_output_tx_and_index_from_global(const uint64_t& index) const;
virtual tx_out_index get_output_tx_and_index(const uint64_t& amount, const uint64_t& index) const;
virtual std::vector<uint64_t> get_tx_output_indices(const crypto::hash& h) const;

2
src/cryptonote_core/blockchain.cpp
View File

@ -170,7 +170,7 @@ bool Blockchain::scan_outputkeys_for_indexes(const txin_to_key& tx_in_to_key, vi
try
{
// get tx hash and output index for output
auto output_index = m_db->get_output_tx_and_index(tx_in_to_key.amount, i);
auto output_index = m_db->get_output_tx_and_index_from_global(i);
// get tx that output is from
auto tx = m_db->get_tx(output_index.first);

4
src/cryptonote_core/blockchain_db.h
View File

@ -107,6 +107,7 @@
* uint64_t get_num_outputs(amount)
* pub_key get_output_key(amount, index)
* tx_out get_output(tx_hash, index)
* hash,index get_output_tx_and_index_from_global(index)
* hash,index get_output_tx_and_index(amount, index)
* vec<uint64> get_tx_output_indices(tx_hash)
*
@ -441,6 +442,9 @@ public:
// returns the output indexed by <index> in the transaction with hash <h>
virtual tx_out get_output(const crypto::hash& h, const uint64_t& index) const = 0;
// returns the tx hash associated with an output, referenced by global output index
virtual tx_out_index get_output_tx_and_index_from_global(const uint64_t& index) const = 0;
// returns the transaction-local reference for the output with <amount> at <index>
// return type is pair of tx hash and index
virtual tx_out_index get_output_tx_and_index(const uint64_t& amount, const uint64_t& index) const = 0;