if ($wrow['address_type'] == 'multisig') {
$keyindexes = array();
$public_keys = array();
$addr_rows = DB::query("SELECT * FROM coin_addresses_multisig WHERE address = %s ORDER BY id", $row['address']);
foreach ($addr_rows as $arow) {
$keyindexes[] = $addr_row['is_change_address'] . '/' . $arow['address_num'];
// Get public key
$ext_public_key = trim($encrypt->decrypt(DB::queryFirstField("SELECT public_key FROM coin_wallets_keys WHERE id = %d", $arow['key_id'])));
$child_key = $bip32->build_key($ext_public_key, $addr_row['is_change_address'] . '/' . $arow['address_num'])[0];
$import = $bip32->import($child_key);
$public_keys[] = $import['key'];
}
$sigscript = $bip32->create_redeem_script($wrow['sigs_required'], $public_keys);
} else {
$keyindexes = $addr_row['is_change_address'] . '/' . $addr_row['address_num'];
$decode_address = $bip32->base58_decode($row['address']);
$sigscript = '76a914' . substr($decode_address, 2, 40) . '88ac';
}
// Set vars
$vars = array('input_id' => $row['id'], 'amount' => $row['amount'], 'txid' => $row['txid'], 'vout' => $row['vout'], 'sigscript' => $sigscript, 'keyindex' => $keyindexes);
array_push($json['inputs'], $vars);
}
// Gather outputs
$rows = DB::query("SELECT * FROM coin_sends WHERE status = 'pending' ORDER BY id");
foreach ($rows as $row) {
// Gather recipients
$recipients = array();
$arows = DB::query("SELECT * FROM coin_sends_addresses WHERE send_id = %d", $row['id']);
foreach ($arows as $arow) {
$vars = array('amount' => $arow['amount'], 'address' => $arow['address']);
array_push($recipients, $vars);
public function create_transaction($wallet_id, $inputs, $outputs)
{
// Initialize
global $config;
$p2sh_byte = TESTNET == 1 ? 'c4' : '05';
$bip32 = new bip32();
// Start variables
$transaction = array('01000000', str_pad(count($inputs), 2, 0, STR_PAD_LEFT));
// Gather inputs
$input_amount = floatval(0);
$txfee = 0;
foreach ($inputs as $row) {
$transaction[] = bin2hex(strrev(hex2bin($row['txid']))) . bin2hex(pack('V', $row['vout']));
$transaction[] = '00';
$transaction[] = '';
$transaction[] = 'ffffffff';
$input_amount += floatval($row['amount']) - floatval($config['btc_txfee']);
$txfee += $config['btc_txfee'];
}
// Get amounts
$output_amount = floatval(array_sum(array_values($outputs)));
// Check for change
if (round($input_amount, 8) > round($output_amount, 8)) {
$change_amount = round($input_amount, 8) - round($output_amount, 8);
$change_address = $bip32->generate_address($wallet_id, 0, 1);
$outputs[$change_address] = round($change_amount, 8, PHP_ROUND_HALF_DOWN);
}
// Gather outputs
$transaction[] = str_pad(count($outputs), 2, 0, STR_PAD_LEFT);
foreach ($outputs as $address => $amount) {
// Get script sig
$decode_address = $bip32->base58_decode($address);
$version = substr($decode_address, 0, 2);
$scriptsig = $version == $p2sh_byte ? 'a914' . substr($decode_address, 2, 40) . '87' : '76a914' . substr($decode_address, 2, 40) . '88ac';
// Get amount
$amount = $this->dec_to_bytes($amount * 100000000.0, 8);
$amount = $this->flip_byte_order($amount);
// Add transaction vars
$transaction[] = $amount;
$transaction[] = dechex(strlen(hex2bin($scriptsig)));
$transaction[] = $scriptsig;
}
// Return
$transaction[] = '00000000';
return $transaction;
}