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Convey tx verification failure reasons to the RPC client

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This allows appropriate action to be taken, like displaying
the reason to the user.

Do just that in simplewallet, which should help a lot in
determining why users fail to send.

Also make it so a tx which is accepted but not relayed is
seen as a success rather than a failure.
This commit is contained in:
moneromooo-monero 2016-03-27 12:35:36 +01:00
parent 1559c71ef2
commit 24b3e9007a
No known key found for this signature in database
GPG Key ID: 686F07454D6CEFC3
10 changed files with 98 additions and 23 deletions
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15
src/cryptonote_core/blockchain.cpp
View File

@ -1991,7 +1991,7 @@ bool Blockchain::get_tx_outputs_gindexs(const crypto::hash& tx_id, std::vector<u
// This function overloads its sister function with
// an extra value (hash of highest block that holds an output used as input)
// as a return-by-reference.
bool Blockchain::check_tx_inputs(const transaction& tx, uint64_t& max_used_block_height, crypto::hash& max_used_block_id, bool kept_by_block)
bool Blockchain::check_tx_inputs(const transaction& tx, uint64_t& max_used_block_height, crypto::hash& max_used_block_id, tx_verification_context &tvc, bool kept_by_block)
{
LOG_PRINT_L3("Blockchain::" << __func__);
CRITICAL_REGION_LOCAL(m_blockchain_lock);
@ -2013,7 +2013,7 @@ bool Blockchain::check_tx_inputs(const transaction& tx, uint64_t& max_used_block
#endif
TIME_MEASURE_START(a);
bool res = check_tx_inputs(tx, &max_used_block_height);
bool res = check_tx_inputs(tx, tvc, &max_used_block_height);
TIME_MEASURE_FINISH(a);
crypto::hash tx_prefix_hash = get_transaction_prefix_hash(tx);
if(m_show_time_stats)
@ -2032,7 +2032,7 @@ bool Blockchain::check_tx_inputs(const transaction& tx, uint64_t& max_used_block
return true;
}
//------------------------------------------------------------------
bool Blockchain::check_tx_outputs(const transaction& tx)
bool Blockchain::check_tx_outputs(const transaction& tx, tx_verification_context &tvc)
{
LOG_PRINT_L3("Blockchain::" << __func__);
CRITICAL_REGION_LOCAL(m_blockchain_lock);
@ -2041,6 +2041,7 @@ bool Blockchain::check_tx_outputs(const transaction& tx)
if (m_hardfork->get_current_version() >= 2) {
for (auto &o: tx.vout) {
if (!is_valid_decomposed_amount(o.amount)) {
tvc.m_invalid_output = true;
return false;
}
}
@ -2066,7 +2067,7 @@ bool Blockchain::have_tx_keyimges_as_spent(const transaction &tx) const
// check_tx_input() rather than here, and use this function simply
// to iterate the inputs as necessary (splitting the task
// using threads, etc.)
bool Blockchain::check_tx_inputs(const transaction& tx, uint64_t* pmax_used_block_height)
bool Blockchain::check_tx_inputs(const transaction& tx, tx_verification_context &tvc, uint64_t* pmax_used_block_height)
{
LOG_PRINT_L3("Blockchain::" << __func__);
size_t sig_index = 0;
@ -2113,11 +2114,13 @@ bool Blockchain::check_tx_inputs(const transaction& tx, uint64_t* pmax_used_bloc
if (n_unmixable == 0)
{
LOG_PRINT_L1("Tx " << get_transaction_hash(tx) << " has too low mixin (" << mixin << "), and no unmixable inputs");
tvc.m_low_mixin = true;
return false;
}
if (n_mixable > 1)
{
LOG_PRINT_L1("Tx " << get_transaction_hash(tx) << " has too low mixin (" << mixin << "), and more than one mixable input with unmixable inputs");
tvc.m_low_mixin = true;
return false;
}
}
@ -2176,6 +2179,7 @@ bool Blockchain::check_tx_inputs(const transaction& tx, uint64_t* pmax_used_bloc
if(have_tx_keyimg_as_spent(in_to_key.k_image))
{
LOG_PRINT_L1("Key image already spent in blockchain: " << epee::string_tools::pod_to_hex(in_to_key.k_image));
tvc.m_double_spend = true;
return false;
}
@ -2667,7 +2671,8 @@ leave:
#endif
{
// validate that transaction inputs and the keys spending them are correct.
if(!check_tx_inputs(tx))
tx_verification_context tvc;
if(!check_tx_inputs(tx, tvc))
{
LOG_PRINT_L1("Block with id: " << id << " has at least one transaction (id: " << tx_id << ") with wrong inputs.");

9
src/cryptonote_core/blockchain.h
View File

@ -472,11 +472,12 @@ namespace cryptonote
* @param tx the transaction to validate
* @param pmax_used_block_height return-by-reference block height of most recent input
* @param max_used_block_id return-by-reference block hash of most recent input
* @param tvc returned information about tx verification
* @param kept_by_block whether or not the transaction is from a previously-verified block
*
* @return false if any input is invalid, otherwise true
*/
bool check_tx_inputs(const transaction& tx, uint64_t& pmax_used_block_height, crypto::hash& max_used_block_id, bool kept_by_block = false);
bool check_tx_inputs(const transaction& tx, uint64_t& pmax_used_block_height, crypto::hash& max_used_block_id, tx_verification_context &tvc, bool kept_by_block = false);
/**
* @brief check that a transaction's outputs conform to current standards
@ -486,10 +487,11 @@ namespace cryptonote
* written out would have only one non-zero digit in base 10).
*
* @param tx the transaction to check the outputs of
* @param tvc returned info about tx verification
*
* @return false if any outputs do not conform, otherwise true
*/
bool check_tx_outputs(const transaction& tx);
bool check_tx_outputs(const transaction& tx, tx_verification_context &tvc);
/**
* @brief gets the blocksize limit based on recent blocks
@ -874,11 +876,12 @@ namespace cryptonote
* transaction.
*
* @param tx the transaction to validate
* @param tvc returned information about tx verification
* @param pmax_related_block_height return-by-pointer the height of the most recent block in the input set
*
* @return false if any validation step fails, otherwise true
*/
bool check_tx_inputs(const transaction& tx, uint64_t* pmax_used_block_height = NULL);
bool check_tx_inputs(const transaction& tx, tx_verification_context &tvc, uint64_t* pmax_used_block_height = NULL);
/**
* @brief performs a blockchain reorganization according to the longest chain rule

1
src/cryptonote_core/cryptonote_core.cpp
View File

@ -489,6 +489,7 @@ namespace cryptonote
{
LOG_PRINT_L1("WRONG TRANSACTION BLOB, too big size " << tx_blob.size() << ", rejected");
tvc.m_verifivation_failed = true;
tvc.m_too_big = true;
return false;
}

18
src/cryptonote_core/tx_pool.cpp
View File

@ -97,6 +97,7 @@ namespace cryptonote
if(!check_inputs_types_supported(tx))
{
tvc.m_verifivation_failed = true;
tvc.m_invalid_input = true;
return false;
}
@ -113,6 +114,7 @@ namespace cryptonote
{
LOG_PRINT_L1("transaction use more money then it has: use " << print_money(outputs_amount) << ", have " << print_money(inputs_amount));
tvc.m_verifivation_failed = true;
tvc.m_overspend = true;
return false;
}
@ -124,6 +126,7 @@ namespace cryptonote
{
LOG_PRINT_L1("transaction fee is not enough: " << print_money(fee) << ", minimum fee: " << print_money(needed_fee));
tvc.m_verifivation_failed = true;
tvc.m_fee_too_low = true;
return false;
}
@ -132,6 +135,7 @@ namespace cryptonote
{
LOG_PRINT_L1("transaction is too big: " << blob_size << " bytes, maximum size: " << tx_size_limit);
tvc.m_verifivation_failed = true;
tvc.m_too_big = true;
return false;
}
@ -142,21 +146,23 @@ namespace cryptonote
{
LOG_PRINT_L1("Transaction with id= "<< id << " used already spent key images");
tvc.m_verifivation_failed = true;
tvc.m_double_spend = true;
return false;
}
}
if (!m_blockchain.check_tx_outputs(tx))
if (!m_blockchain.check_tx_outputs(tx, tvc))
{
LOG_PRINT_L1("Transaction with id= "<< id << " has at least one invalid outout");
tvc.m_verifivation_failed = true;
tvc.m_invalid_output = true;
return false;
}
crypto::hash max_used_block_id = null_hash;
uint64_t max_used_block_height = 0;
#if BLOCKCHAIN_DB == DB_LMDB
bool ch_inp_res = m_blockchain.check_tx_inputs(tx, max_used_block_height, max_used_block_id, kept_by_block);
bool ch_inp_res = m_blockchain.check_tx_inputs(tx, max_used_block_height, max_used_block_id, tvc, kept_by_block);
#else
bool ch_inp_res = m_blockchain.check_tx_inputs(tx, max_used_block_height, max_used_block_id);
#endif
@ -480,7 +486,8 @@ namespace cryptonote
if(txd.last_failed_id != null_hash && m_blockchain.get_current_blockchain_height() > txd.last_failed_height && txd.last_failed_id == m_blockchain.get_block_id_by_height(txd.last_failed_height))
return false;//we already sure that this tx is broken for this height
if(!m_blockchain.check_tx_inputs(txd.tx, txd.max_used_block_height, txd.max_used_block_id))
tx_verification_context tvc;
if(!m_blockchain.check_tx_inputs(txd.tx, txd.max_used_block_height, txd.max_used_block_id, tvc))
{
txd.last_failed_height = m_blockchain.get_current_blockchain_height()-1;
txd.last_failed_id = m_blockchain.get_block_id_by_height(txd.last_failed_height);
@ -496,7 +503,12 @@ namespace cryptonote
if(txd.last_failed_id == m_blockchain.get_block_id_by_height(txd.last_failed_height))
return false;
//check ring signature again, it is possible (with very small chance) that this transaction become again valid
#if BLOCKCHAIN_DB == DB_LMDB
tx_verification_context tvc;
if(!m_blockchain.check_tx_inputs(txd.tx, txd.max_used_block_height, txd.max_used_block_id, tvc))
#else
if(!m_blockchain.check_tx_inputs(txd.tx, txd.max_used_block_height, txd.max_used_block_id))
#endif
{
txd.last_failed_height = m_blockchain.get_current_blockchain_height()-1;
txd.last_failed_id = m_blockchain.get_block_id_by_height(txd.last_failed_height);

7
src/cryptonote_core/verification_context.h
View File

@ -40,6 +40,13 @@ namespace cryptonote
bool m_verifivation_failed; //bad tx, should drop connection
bool m_verifivation_impossible; //the transaction is related with an alternative blockchain
bool m_added_to_pool;
bool m_low_mixin;
bool m_double_spend;
bool m_invalid_input;
bool m_invalid_output;
bool m_too_big;
bool m_overspend;
bool m_fee_too_low;
};
struct block_verification_context

36
src/rpc/core_rpc_server.cpp
View File

@ -355,24 +355,40 @@ namespace cryptonote
cryptonote_connection_context fake_context = AUTO_VAL_INIT(fake_context);
tx_verification_context tvc = AUTO_VAL_INIT(tvc);
if(!m_core.handle_incoming_tx(tx_blob, tvc, false, false))
if(!m_core.handle_incoming_tx(tx_blob, tvc, false, false) || tvc.m_verifivation_failed)
{
LOG_PRINT_L0("[on_send_raw_tx]: Failed to process tx");
res.status = "Failed";
return true;
}
if(tvc.m_verifivation_failed)
{
LOG_PRINT_L0("[on_send_raw_tx]: tx verification failed");
if (tvc.m_verifivation_failed)
{
LOG_PRINT_L0("[on_send_raw_tx]: tx verification failed");
}
else
{
LOG_PRINT_L0("[on_send_raw_tx]: Failed to process tx");
}
res.status = "Failed";
if ((res.low_mixin = tvc.m_low_mixin))
res.reason = "mixin too low";
if ((res.double_spend = tvc.m_double_spend))
res.reason = "double spend";
if ((res.invalid_input = tvc.m_invalid_input))
res.reason = "invalid input";
if ((res.invalid_output = tvc.m_invalid_output))
res.reason = "invalid output";
if ((res.too_big = tvc.m_too_big))
res.reason = "too big";
if ((res.overspend = tvc.m_overspend))
res.reason = "overspend";
if ((res.fee_too_low = tvc.m_fee_too_low))
res.reason = "fee too low";
return true;
}
if(!tvc.m_should_be_relayed)
{
LOG_PRINT_L0("[on_send_raw_tx]: tx accepted, but not relayed");
res.status = "Not relayed";
res.reason = "Not relayed";
res.not_relayed = true;
res.status = CORE_RPC_STATUS_OK;
return true;
}

18
src/rpc/core_rpc_server_commands_defs.h
View File

@ -234,9 +234,27 @@ namespace cryptonote
struct response
{
std::string status;
std::string reason;
bool not_relayed;
bool low_mixin;
bool double_spend;
bool invalid_input;
bool invalid_output;
bool too_big;
bool overspend;
bool fee_too_low;
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(status)
KV_SERIALIZE(reason)
KV_SERIALIZE(not_relayed)
KV_SERIALIZE(low_mixin)
KV_SERIALIZE(double_spend)
KV_SERIALIZE(invalid_input)
KV_SERIALIZE(invalid_output)
KV_SERIALIZE(too_big)
KV_SERIALIZE(overspend)
KV_SERIALIZE(fee_too_low)
END_KV_SERIALIZE_MAP()
};
};

6
src/simplewallet/simplewallet.cpp
View File

@ -2160,6 +2160,9 @@ bool simple_wallet::transfer_main(bool new_algorithm, const std::vector<std::str
catch (const tools::error::tx_rejected& e)
{
fail_msg_writer() << (boost::format(tr("transaction %s was rejected by daemon with status: ")) % get_transaction_hash(e.tx())) << e.status();
std::string reason = e.reason();
if (!reason.empty())
fail_msg_writer() << tr("Reason: ") << reason;
}
catch (const tools::error::tx_sum_overflow& e)
{
@ -2307,6 +2310,9 @@ bool simple_wallet::sweep_dust(const std::vector<std::string> &args_)
catch (const tools::error::tx_rejected& e)
{
fail_msg_writer() << (boost::format(tr("transaction %s was rejected by daemon with status: ")) % get_transaction_hash(e.tx())) << e.status();
std::string reason = e.reason();
if (!reason.empty())
fail_msg_writer() << tr("Reason: ") << reason;
}
catch (const tools::error::tx_sum_overflow& e)
{

2
src/wallet/wallet2.cpp
View File

@ -1958,7 +1958,7 @@ void wallet2::commit_tx(pending_tx& ptx)
m_daemon_rpc_mutex.unlock();
THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "sendrawtransaction");
THROW_WALLET_EXCEPTION_IF(daemon_send_resp.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "sendrawtransaction");
THROW_WALLET_EXCEPTION_IF(daemon_send_resp.status != CORE_RPC_STATUS_OK, error::tx_rejected, ptx.tx, daemon_send_resp.status);
THROW_WALLET_EXCEPTION_IF(daemon_send_resp.status != CORE_RPC_STATUS_OK, error::tx_rejected, ptx.tx, daemon_send_resp.status, daemon_send_resp.reason);
txid = get_transaction_hash(ptx.tx);
crypto::hash payment_id = cryptonote::null_hash;

9
src/wallet/wallet_errors.h
View File

@ -457,15 +457,17 @@ namespace tools
//----------------------------------------------------------------------------------------------------
struct tx_rejected : public transfer_error
{
explicit tx_rejected(std::string&& loc, const cryptonote::transaction& tx, const std::string& status)
explicit tx_rejected(std::string&& loc, const cryptonote::transaction& tx, const std::string& status, const std::string& reason)
: transfer_error(std::move(loc), "transaction was rejected by daemon")
, m_tx(tx)
, m_status(status)
, m_reason(reason)
{
}
const cryptonote::transaction& tx() const { return m_tx; }
const std::string& status() const { return m_status; }
const std::string& reason() const { return m_reason; }
std::string to_string() const
{
@ -473,12 +475,17 @@ namespace tools
ss << transfer_error::to_string() << ", status = " << m_status << ", tx:\n";
cryptonote::transaction tx = m_tx;
ss << cryptonote::obj_to_json_str(tx);
if (!m_reason.empty())
{
ss << " (" << m_reason << ")";
}
return ss.str();
}
private:
cryptonote::transaction m_tx;
std::string m_status;
std::string m_reason;
};
//----------------------------------------------------------------------------------------------------
struct tx_sum_overflow : public transfer_error