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wallet2: recover from index out of hashchain bounds error

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This can happen when there's a very large reorg on the daemon
(ie, on testnet)
This commit is contained in:
moneromooo-monero 2018-04-28 12:11:42 +01:00
parent 7d2d8055ac
commit d6440ab319
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GPG key ID: 686F07454D6CEFC3
3 changed files with 44 additions and 5 deletions
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36
src/wallet/wallet2.cpp
View file

@ -1823,7 +1823,7 @@ void wallet2::process_parsed_blocks(uint64_t start_height, const std::vector<cry
blocks_added = 0;
THROW_WALLET_EXCEPTION_IF(blocks.size() != parsed_blocks.size(), error::wallet_internal_error, "size mismatch");
THROW_WALLET_EXCEPTION_IF(!m_blockchain.is_in_bounds(current_index), error::wallet_internal_error, "Index out of bounds of hashchain");
THROW_WALLET_EXCEPTION_IF(!m_blockchain.is_in_bounds(current_index), error::out_of_hashchain_bounds_error);
tools::threadpool& tpool = tools::threadpool::getInstance();
tools::threadpool::waiter waiter;
@ -2269,12 +2269,12 @@ void wallet2::update_pool_state(bool refreshed)
MDEBUG("update_pool_state end");
}
//----------------------------------------------------------------------------------------------------
void wallet2::fast_refresh(uint64_t stop_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history)
void wallet2::fast_refresh(uint64_t stop_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history, bool force)
{
std::vector<crypto::hash> hashes;
const uint64_t checkpoint_height = m_checkpoints.get_max_height();
if (stop_height > checkpoint_height && m_blockchain.size()-1 < checkpoint_height)
if ((stop_height > checkpoint_height && m_blockchain.size()-1 < checkpoint_height) && !force)
{
// we will drop all these, so don't bother getting them
uint64_t missing_blocks = m_checkpoints.get_max_height() - m_blockchain.size();
@ -2439,6 +2439,7 @@ void wallet2::refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blo
std::vector<cryptonote::block_complete_entry> next_blocks;
std::vector<parsed_block> next_parsed_blocks;
bool error = false;
added_blocks = 0;
if (!first && blocks.empty())
{
refreshed = false;
@ -2448,7 +2449,33 @@ void wallet2::refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blo
if (!first)
{
process_parsed_blocks(blocks_start_height, blocks, parsed_blocks, added_blocks);
try
{
process_parsed_blocks(blocks_start_height, blocks, parsed_blocks, added_blocks);
}
catch (const tools::error::out_of_hashchain_bounds_error&)
{
MINFO("Daemon claims next refresh block is out of hash chain bounds, resetting hash chain");
uint64_t stop_height = m_blockchain.offset();
std::vector<crypto::hash> tip(m_blockchain.size() - m_blockchain.offset());
for (size_t i = m_blockchain.offset(); i < m_blockchain.size(); ++i)
tip[i - m_blockchain.offset()] = m_blockchain[i];
cryptonote::block b;
generate_genesis(b);
m_blockchain.clear();
m_blockchain.push_back(get_block_hash(b));
short_chain_history.clear();
get_short_chain_history(short_chain_history);
fast_refresh(stop_height, blocks_start_height, short_chain_history, true);
THROW_WALLET_EXCEPTION_IF(m_blockchain.size() != stop_height, error::wallet_internal_error, "Unexpected hashchain size");
THROW_WALLET_EXCEPTION_IF(m_blockchain.offset() != 0, error::wallet_internal_error, "Unexpected hashchain offset");
for (const auto &h: tip)
m_blockchain.push_back(h);
short_chain_history.clear();
get_short_chain_history(short_chain_history);
start_height = stop_height;
throw std::runtime_error(""); // loop again
}
blocks_fetched += added_blocks;
}
waiter.wait(&tpool);
@ -2478,6 +2505,7 @@ void wallet2::refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blo
if(try_count < 3)
{
LOG_PRINT_L1("Another try pull_blocks (try_count=" << try_count << ")...");
first = true;
++try_count;
}
else

2
src/wallet/wallet2.h
View file

@ -1167,7 +1167,7 @@ namespace tools
bool clear();
void pull_blocks(uint64_t start_height, uint64_t& blocks_start_height, const std::list<crypto::hash> &short_chain_history, std::vector<cryptonote::block_complete_entry> &blocks, std::vector<cryptonote::COMMAND_RPC_GET_BLOCKS_FAST::block_output_indices> &o_indices);
void pull_hashes(uint64_t start_height, uint64_t& blocks_start_height, const std::list<crypto::hash> &short_chain_history, std::vector<crypto::hash> &hashes);
void fast_refresh(uint64_t stop_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history);
void fast_refresh(uint64_t stop_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history, bool force = false);
void pull_and_parse_next_blocks(uint64_t start_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history, const std::vector<cryptonote::block_complete_entry> &prev_blocks, const std::vector<parsed_block> &prev_parsed_blocks, std::vector<cryptonote::block_complete_entry> &blocks, std::vector<parsed_block> &parsed_blocks, bool &error);
void process_parsed_blocks(uint64_t start_height, const std::vector<cryptonote::block_complete_entry> &blocks, const std::vector<parsed_block> &parsed_blocks, uint64_t& blocks_added);
uint64_t select_transfers(uint64_t needed_money, std::vector<size_t> unused_transfers_indices, std::vector<size_t>& selected_transfers, bool trusted_daemon) const;

11
src/wallet/wallet_errors.h
View file

@ -70,6 +70,7 @@ namespace tools
// get_out_indexes_error
// tx_parse_error
// get_tx_pool_error
// out_of_hashchain_bounds_error
// transfer_error *
// get_random_outs_general_error
// not_enough_unlocked_money
@ -398,6 +399,16 @@ namespace tools
std::string to_string() const { return refresh_error::to_string(); }
};
//----------------------------------------------------------------------------------------------------
struct out_of_hashchain_bounds_error : public refresh_error
{
explicit out_of_hashchain_bounds_error(std::string&& loc)
: refresh_error(std::move(loc), "Index out of bounds of of hashchain")
{
}
std::string to_string() const { return refresh_error::to_string(); }
};
//----------------------------------------------------------------------------------------------------
struct transfer_error : public wallet_logic_error
{
protected: