Status
bridgeWatcherDelete(Wallet &self)
{
watcherSave(self).log(); // Failure is not fatal
watchers_.erase(self.id());
return Status();
}
tABC_CC ABC_BridgeWatcherDelete(Wallet &self, tABC_Error *pError)
{
tABC_CC cc = ABC_CC_Ok;
watcherSave(self); // Failure is not fatal
watchers_.erase(self.id());
return cc;
}
tABC_CC ABC_BridgeWatcherLoop(Wallet &self,
tABC_BitCoin_Event_Callback fAsyncCallback,
void *pData,
tABC_Error *pError)
{
tABC_CC cc = ABC_CC_Ok;
Watcher::block_height_callback heightCallback;
Watcher::tx_callback txCallback;
Watcher::tx_sent_callback sendCallback;
Watcher::quiet_callback on_quiet;
Watcher::fail_callback failCallback;
WatcherInfo *watcherInfo = nullptr;
ABC_CHECK_NEW(watcherFind(watcherInfo, self));
watcherInfo->fAsyncCallback = fAsyncCallback;
watcherInfo->pData = pData;
txCallback = [watcherInfo, fAsyncCallback, pData] (const libbitcoin::transaction_type& tx)
{
ABC_BridgeTxCallback(watcherInfo, tx, fAsyncCallback, pData);
};
watcherInfo->watcher.set_tx_callback(txCallback);
heightCallback = [watcherInfo, fAsyncCallback, pData](const size_t height)
{
if (fAsyncCallback)
{
tABC_AsyncBitCoinInfo info;
info.eventType = ABC_AsyncEventType_BlockHeightChange;
info.pData = pData;
info.szDescription = "Block height change";
fAsyncCallback(&info);
}
watcherSave(watcherInfo->wallet); // Failure is not fatal
};
watcherInfo->watcher.set_height_callback(heightCallback);
on_quiet = [watcherInfo]()
{
ABC_BridgeQuietCallback(watcherInfo);
};
watcherInfo->watcher.set_quiet_callback(on_quiet);
failCallback = [watcherInfo]()
{
tABC_Error error;
ABC_BridgeWatcherConnect(watcherInfo->wallet, &error);
};
watcherInfo->watcher.set_fail_callback(failCallback);
watcherInfo->watcher.loop();
exit:
return cc;
}
static
void ABC_BridgeTxCallback(WatcherInfo *watcherInfo, const libbitcoin::transaction_type& tx,
tABC_BitCoin_Event_Callback fAsyncBitCoinEventCallback,
void *pData)
{
tABC_CC cc = ABC_CC_Ok;
tABC_Error error;
int64_t fees = 0;
int64_t totalInSatoshi = 0, totalOutSatoshi = 0, totalMeSatoshi = 0, totalMeInSatoshi = 0;
tABC_TxOutput **iarr = NULL, **oarr = NULL;
unsigned int idx = 0, iCount = 0, oCount = 0;
std::string txId, malTxId;
if (watcherInfo == NULL)
{
cc = ABC_CC_Error;
goto exit;
}
txId = ABC_BridgeNonMalleableTxId(tx);
malTxId = bc::encode_hash(bc::hash_transaction(tx));
idx = 0;
iCount = tx.inputs.size();
iarr = (tABC_TxOutput **) malloc(sizeof(tABC_TxOutput *) * iCount);
for (auto i : tx.inputs)
{
bc::payment_address addr;
bc::extract(addr, i.script);
auto prev = i.previous_output;
// Create output
tABC_TxOutput *out = (tABC_TxOutput *) malloc(sizeof(tABC_TxOutput));
out->input = true;
out->szTxId = stringCopy(bc::encode_hash(prev.hash));
out->szAddress = stringCopy(addr.encoded());
// Check prevouts for values
auto tx = watcherInfo->watcher.find_tx(prev.hash);
if (prev.index < tx.outputs.size())
{
out->value = tx.outputs[prev.index].value;
totalInSatoshi += tx.outputs[prev.index].value;
auto row = watcherInfo->addresses.find(addr.encoded());
if (row != watcherInfo->addresses.end())
totalMeInSatoshi += tx.outputs[prev.index].value;
}
iarr[idx] = out;
idx++;
}
idx = 0;
oCount = tx.outputs.size();
oarr = (tABC_TxOutput **) malloc(sizeof(tABC_TxOutput *) * oCount);
for (auto o : tx.outputs)
{
bc::payment_address addr;
bc::extract(addr, o.script);
// Create output
tABC_TxOutput *out = (tABC_TxOutput *) malloc(sizeof(tABC_TxOutput));
out->input = false;
out->value = o.value;
out->szAddress = stringCopy(addr.encoded());
out->szTxId = stringCopy(malTxId);
// Do we own this address?
auto row = watcherInfo->addresses.find(addr.encoded());
if (row != watcherInfo->addresses.end())
{
totalMeSatoshi += o.value;
}
totalOutSatoshi += o.value;
oarr[idx] = out;
idx++;
}
if (totalMeSatoshi == 0 && totalMeInSatoshi == 0)
{
ABC_DebugLog("values == 0, this tx does not concern me.\n");
goto exit;
}
fees = totalInSatoshi - totalOutSatoshi;
totalMeSatoshi -= totalMeInSatoshi;
ABC_DebugLog("calling ABC_TxReceiveTransaction");
ABC_DebugLog("Total Me: %s, Total In: %s, Total Out: %s, Fees: %s",
std::to_string(totalMeSatoshi).c_str(),
std::to_string(totalInSatoshi).c_str(),
std::to_string(totalOutSatoshi).c_str(),
std::to_string(fees).c_str());
ABC_CHECK_RET(
ABC_TxReceiveTransaction(
watcherInfo->wallet,
totalMeSatoshi, fees,
iarr, iCount,
oarr, oCount,
txId.c_str(), malTxId.c_str(),
fAsyncBitCoinEventCallback,
pData,
&error));
watcherSave(watcherInfo->wallet); // Failure is not fatal
exit:
ABC_FREE(oarr);
ABC_FREE(iarr);
}
static Status
bridgeTxCallback(Wallet &wallet,
const libbitcoin::transaction_type &tx,
tABC_BitCoin_Event_Callback fAsyncCallback, void *pData)
{
const auto addresses = wallet.addresses.list();
const auto info = wallet.txCache.txInfo(tx, addresses);
// Does this transaction concern us?
if (wallet.txCache.isRelevant(tx, addresses))
{
// Does the transaction already exist?
Tx meta;
if (!wallet.txs.get(meta, info.ntxid))
{
meta.ntxid = info.ntxid;
meta.txid = info.txid;
meta.timeCreation = time(nullptr);
meta.internal = false;
// Grab metadata from the address:
TxMetadata metadata;
for (const auto &io: info.ios)
{
Address address;
if (wallet.addresses.get(address, io.address))
meta.metadata = address.metadata;
}
meta.metadata.amountSatoshi = info.balance;
meta.metadata.amountFeesMinersSatoshi = info.fee;
ABC_CHECK(gContext->exchangeCache.satoshiToCurrency(
meta.metadata.amountCurrency, info.balance,
static_cast<Currency>(wallet.currency())));
// Save the metadata:
ABC_CHECK(wallet.txs.save(meta));
// Update the transaction cache:
watcherSave(wallet).log(); // Failure is not fatal
wallet.balanceDirty();
ABC_CHECK(wallet.addresses.markOutputs(info.ios));
// Update the GUI:
ABC_DebugLog("IncomingBitCoin callback: wallet %s, txid: %s",
wallet.id().c_str(), info.txid.c_str());
tABC_AsyncBitCoinInfo async;
async.pData = pData;
async.eventType = ABC_AsyncEventType_IncomingBitCoin;
Status().toError(async.status, ABC_HERE());
async.szWalletUUID = wallet.id().c_str();
async.szTxID = info.txid.c_str();
async.sweepSatoshi = 0;
fAsyncCallback(&async);
}
else
{
// Update the transaction cache:
watcherSave(wallet).log(); // Failure is not fatal
wallet.balanceDirty();
ABC_CHECK(wallet.addresses.markOutputs(info.ios));
// Update the GUI:
ABC_DebugLog("BalanceUpdate callback: wallet %s, txid: %s",
wallet.id().c_str(), info.txid.c_str());
tABC_AsyncBitCoinInfo async;
async.pData = pData;
async.eventType = ABC_AsyncEventType_BalanceUpdate;
Status().toError(async.status, ABC_HERE());
async.szWalletUUID = wallet.id().c_str();
async.szTxID = info.txid.c_str();
async.sweepSatoshi = 0;
fAsyncCallback(&async);
}
}
else
{
ABC_DebugLog("New (irrelevant) transaction: wallet %s, txid: %s",
wallet.id().c_str(), info.txid.c_str());
}
return Status();
}
static Status
bridgeDoSweep(Wallet &wallet, PendingSweep &sweep,
tABC_BitCoin_Event_Callback fAsyncCallback, void *pData)
{
// Find utxos for this address:
AddressSet addresses;
addresses.insert(sweep.address);
auto utxos = wallet.txCache.get_utxos(addresses);
// Bail out if there are no funds to sweep:
if (!utxos.size())
{
// Tell the GUI if there were funds in the past:
if (wallet.txCache.has_history(sweep.address))
{
ABC_DebugLog("IncomingSweep callback: wallet %s, value: 0",
wallet.id().c_str());
tABC_AsyncBitCoinInfo info;
info.pData = pData;
info.eventType = ABC_AsyncEventType_IncomingSweep;
Status().toError(info.status, ABC_HERE());
info.szWalletUUID = wallet.id().c_str();
info.szTxID = nullptr;
info.sweepSatoshi = 0;
fAsyncCallback(&info);
sweep.done = true;
}
return Status();
}
// Build a transaction:
bc::transaction_type tx;
tx.version = 1;
tx.locktime = 0;
// Set up the output:
Address address;
wallet.addresses.getNew(address);
bc::transaction_output_type output;
ABC_CHECK(outputScriptForAddress(output.script, address.address));
tx.outputs.push_back(output);
// Set up the inputs:
uint64_t fee, funds;
ABC_CHECK(inputsPickMaximum(fee, funds, tx, utxos));
if (outputIsDust(funds))
return ABC_ERROR(ABC_CC_InsufficientFunds, "Not enough funds");
tx.outputs[0].value = funds;
// Now sign that:
KeyTable keys;
keys[sweep.address] = sweep.key;
ABC_CHECK(signTx(tx, wallet.txCache, keys));
// Send:
bc::data_chunk raw_tx(satoshi_raw_size(tx));
bc::satoshi_save(tx, raw_tx.begin());
ABC_CHECK(broadcastTx(wallet, raw_tx));
// Calculate transaction information:
const auto info = wallet.txCache.txInfo(tx, wallet.addresses.list());
// Save the transaction metadata:
Tx meta;
meta.ntxid = info.ntxid;
meta.txid = info.txid;
meta.timeCreation = time(nullptr);
meta.internal = true;
meta.metadata.amountSatoshi = funds;
meta.metadata.amountFeesAirbitzSatoshi = 0;
ABC_CHECK(gContext->exchangeCache.satoshiToCurrency(
meta.metadata.amountCurrency, info.balance,
static_cast<Currency>(wallet.currency())));
ABC_CHECK(wallet.txs.save(meta));
// Update the transaction cache:
if (wallet.txCache.insert(tx))
watcherSave(wallet).log(); // Failure is not fatal
wallet.balanceDirty();
ABC_CHECK(wallet.addresses.markOutputs(info.ios));
// Done:
ABC_DebugLog("IncomingSweep callback: wallet %s, txid: %s, value: %d",
wallet.id().c_str(), info.txid.c_str(), output.value);
tABC_AsyncBitCoinInfo async;
async.pData = pData;
async.eventType = ABC_AsyncEventType_IncomingSweep;
Status().toError(async.status, ABC_HERE());
async.szWalletUUID = wallet.id().c_str();
async.szTxID = info.txid.c_str();
async.sweepSatoshi = output.value;
fAsyncCallback(&async);
sweep.done = true;
return Status();
}
Status
bridgeWatcherLoop(Wallet &self,
tABC_BitCoin_Event_Callback fCallback,
void *pData)
{
WatcherInfo *watcherInfo = nullptr;
ABC_CHECK(watcherFind(watcherInfo, self));
// Set up the address-changed callback:
auto wakeupCallback = [watcherInfo]()
{
watcherInfo->watcher.sendWakeup();
};
self.addressCache.wakeupCallbackSet(wakeupCallback);
// Set up the address-synced callback:
auto doneCallback = [watcherInfo, fCallback, pData]()
{
ABC_DebugLog("AddressCheckDone callback: wallet %s",
watcherInfo->wallet.id().c_str());
tABC_AsyncBitCoinInfo info;
info.pData = pData;
info.eventType = ABC_AsyncEventType_AddressCheckDone;
Status().toError(info.status, ABC_HERE());
info.szWalletUUID = watcherInfo->wallet.id().c_str();
info.szTxID = nullptr;
info.sweepSatoshi = 0;
fCallback(&info);
};
self.addressCache.doneCallbackSet(doneCallback);
// Set up new-transaction callback:
auto txCallback = [watcherInfo, fCallback, pData]
(const libbitcoin::transaction_type &tx)
{
bridgeTxCallback(watcherInfo->wallet, tx, fCallback, pData).log();
};
watcherInfo->watcher.set_tx_callback(txCallback);
// Set up new-block callback:
auto heightCallback = [watcherInfo, fCallback, pData](const size_t height)
{
// Update the GUI:
ABC_DebugLog("BlockHeightChange callback: wallet %s",
watcherInfo->wallet.id().c_str());
tABC_AsyncBitCoinInfo info;
info.pData = pData;
info.eventType = ABC_AsyncEventType_BlockHeightChange;
Status().toError(info.status, ABC_HERE());
info.szWalletUUID = watcherInfo->wallet.id().c_str();
info.szTxID = nullptr;
info.sweepSatoshi = 0;
fCallback(&info);
watcherSave(watcherInfo->wallet).log(); // Failure is not fatal
};
watcherInfo->watcher.set_height_callback(heightCallback);
// Set up sweep-trigger callback:
auto onQuiet = [watcherInfo, fCallback, pData]()
{
bridgeQuietCallback(watcherInfo, fCallback, pData);
};
watcherInfo->watcher.set_quiet_callback(onQuiet);
// Do the loop:
watcherInfo->watcher.loop();
// Cancel all callbacks:
watcherInfo->watcher.set_quiet_callback(nullptr);
watcherInfo->watcher.set_height_callback(nullptr);
watcherInfo->watcher.set_tx_callback(nullptr);
self.addressCache.wakeupCallbackSet(nullptr);
self.addressCache.doneCallbackSet(nullptr);
return Status();
}