static
tABC_CC ABC_BridgeDoSweep(WatcherInfo *watcherInfo,
PendingSweep& sweep,
tABC_Error *pError)
{
tABC_CC cc = ABC_CC_Ok;
char *szID = NULL;
char *szAddress = NULL;
uint64_t funds = 0;
abcd::unsigned_transaction utx;
bc::transaction_output_type output;
abcd::key_table keys;
std::string malTxId, txId;
// Find utxos for this address:
auto utxos = watcherInfo->watcher.get_utxos(sweep.address);
// Bail out if there are no funds to sweep:
if (!utxos.size())
{
// Tell the GUI if there were funds in the past:
if (watcherInfo->watcher.db().has_history(sweep.address))
{
if (sweep.fCallback)
{
sweep.fCallback(ABC_CC_Ok, NULL, 0);
}
else
{
if (watcherInfo->fAsyncCallback)
{
tABC_AsyncBitCoinInfo info;
info.eventType = ABC_AsyncEventType_IncomingSweep;
info.sweepSatoshi = 0;
info.szTxID = NULL;
watcherInfo->fAsyncCallback(&info);
}
}
sweep.done = true;
}
return ABC_CC_Ok;
}
// There are some utxos, so send them to ourselves:
tABC_TxDetails details;
memset(&details, 0, sizeof(tABC_TxDetails));
details.amountSatoshi = 0;
details.amountCurrency = 0;
details.amountFeesAirbitzSatoshi = 0;
details.amountFeesMinersSatoshi = 0;
details.szName = const_cast<char*>("");
details.szCategory = const_cast<char*>("");
details.szNotes = const_cast<char*>("");
details.attributes = 0x2;
// Create a new receive request:
ABC_CHECK_RET(ABC_TxCreateReceiveRequest(watcherInfo->wallet,
&details, &szID, false, pError));
ABC_CHECK_RET(ABC_TxGetRequestAddress(watcherInfo->wallet, szID,
&szAddress, pError));
// Build a transaction:
utx.tx.version = 1;
utx.tx.locktime = 0;
for (auto &utxo : utxos)
{
bc::transaction_input_type input;
input.sequence = 0xffffffff;
input.previous_output = utxo.point;
funds += utxo.value;
utx.tx.inputs.push_back(input);
}
if (10000 < funds)
funds -= 10000; // Ugh, hard-coded mining fee
ABC_CHECK_ASSERT(!outputIsDust(funds), ABC_CC_InsufficientFunds, "Not enough funds");
output.value = funds;
ABC_CHECK_NEW(outputScriptForAddress(output.script, szAddress));
utx.tx.outputs.push_back(output);
// Now sign that:
keys[sweep.address] = sweep.key;
ABC_CHECK_SYS(abcd::gather_challenges(utx, watcherInfo->watcher), "gather_challenges");
ABC_CHECK_SYS(abcd::sign_tx(utx, keys), "sign_tx");
// Send:
{
bc::data_chunk raw_tx(satoshi_raw_size(utx.tx));
bc::satoshi_save(utx.tx, raw_tx.begin());
ABC_CHECK_NEW(broadcastTx(raw_tx));
}
// Save the transaction in the database:
malTxId = bc::encode_hash(bc::hash_transaction(utx.tx));
txId = ABC_BridgeNonMalleableTxId(utx.tx);
ABC_CHECK_RET(ABC_TxSweepSaveTransaction(watcherInfo->wallet,
txId.c_str(), malTxId.c_str(), funds, &details, pError));
// Done:
if (sweep.fCallback)
{
sweep.fCallback(ABC_CC_Ok, txId.c_str(), output.value);
}
else
{
if (watcherInfo->fAsyncCallback)
{
tABC_AsyncBitCoinInfo info;
info.eventType = ABC_AsyncEventType_IncomingSweep;
info.sweepSatoshi = output.value;
info.szTxID = stringCopy(txId);
watcherInfo->fAsyncCallback(&info);
ABC_FREE_STR(info.szTxID);
}
}
sweep.done = true;
watcherInfo->watcher.send_tx(utx.tx);
exit:
ABC_FREE_STR(szID);
ABC_FREE_STR(szAddress);
return cc;
}
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();
}
