<?php
// Initialize
global $template;
// Update general settings
if (isset($_POST['submit']) && $_POST['submit'] == tr('Add New Wallet')) {
// Initialize
$b32 = new bip32();
$enc_client = new encrypt();
$required_sigs = $_POST['address_type'] == 'standard' ? 1 : $_POST['multisig_sig_required'];
$total_sigs = $_POST['address_type'] == 'standard' ? 1 : $_POST['multisig_sig_total'];
// Validate public keys
if ($_POST['autogen_keys'] == 0) {
for ($x = 1; $x <= $total_sigs; $x++) {
if (!($import = $b32->import($_POST['bip32_key' . $x]))) {
$template->add_message("The #{$x} BIP32 key you specified is an invalid BIP32 key.", 'error');
} elseif ($import['type'] != 'public') {
$template->add_message("The #{$x} BIP32 key you specified is an invalid BIP32 key.", 'error');
}
}
}
// Create wallet, if no errors
if ($template->has_errors != 1) {
// Add to DB
DB::insert('coin_wallets', array('address_type' => $_POST['address_type'], 'sigs_required' => $required_sigs, 'sigs_total' => $total_sigs, 'display_name' => $_POST['wallet_name']));
$wallet_id = DB::insertId();
// Gather BIP32 keys
$keys = array();
for ($x = 1; $x <= $total_sigs; $x++) {
// Auto-generate, if needed
if ($_POST['autogen_keys'] == 1) {
public function sign_transaction($transaction, $inputs)
{
// Initialize
$bip32 = new bip32();
// Start transaction
$transaction[] = '01000000';
$orig_transaction = $transaction;
// Add inputs temporarily
$temp_input = 3;
foreach ($inputs as $input) {
// Set transaction variables
$temp_transaction = $orig_transaction;
if (count($input['privkeys']) > 1) {
$temp_transaction[$temp_input] = $this->encode_vint(strlen(hex2bin($input['scriptsig'])));
$temp_transaction[$temp_input + 1] = $input['scriptsig'];
} else {
$temp_transaction[$temp_input] = dechex(strlen(hex2bin($input['scriptsig'])));
$temp_transaction[$temp_input + 1] = $input['scriptsig'];
}
// Initialize
$generator = SECcurve::generator_secp256k1();
// Hash structure
$temp_hex_trans = pack("H*", implode("", $temp_transaction));
$hash = hash('sha256', hash('sha256', $temp_hex_trans, true));
// Go through the keys
$signatures = array();
$total_sign = 0;
foreach ($input['privkeys'] as $privkey) {
// Get public key
$import = $bip32->import($privkey);
$pubkey = $bip32->private_to_public($import['key']);
$cpubkey = $bip32->private_to_public($import['key'], true);
// Get ready to sign
$point = new Point($generator->getCurve(), gmp_init(substr($pubkey, 2, 64), 16), gmp_init(substr($pubkey, 66, 64), 16), $generator->getOrder());
$_public_key = new PublicKey($generator, $point);
$_private_key = new PrivateKey($_public_key, gmp_init($import['key'], 16));
// Sign
$sign = $_private_key->sign(gmp_init($hash, 16), gmp_init((string) bin2hex(openssl_random_pseudo_bytes(32)), 16));
$signatures[$cpubkey] = $this->_encode_signature($sign);
$total_sign++;
}
// Encode signature
if (count($input['privkeys']) > 1) {
$sig = '00';
foreach ($signatures as $pubkey => $sign) {
$sig .= $this->encode_vint(strlen($sign) / 2) . $sign;
}
$sig .= '4c' . $this->encode_vint(strlen($input['scriptsig']) / 2) . $input['scriptsig'];
} else {
$key = array_keys($signatures)[0];
$sig = $this->encode_vint(strlen($signatures[$key]) / 2) . $signatures[$key];
$sig .= $this->encode_vint(strlen($key) / 2) . $key;
}
// Add to transaction
$transaction[$temp_input] = $this->encode_vint(strlen(hex2bin($sig)));
$transaction[$temp_input + 1] = $sig;
$temp_input += 4;
}
array_pop($transaction);
// Return
return implode("", $transaction);
}
}
// Get address row
if (!($addr_row = DB::queryFirstRow("SELECT * FROM coin_addresses WHERE address = %s", $row['address']))) {
continue;
}
// Get keyindexes
if ($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 $row) {
// Create sigscript
if ($wallet['address_type'] == 'multisig') {
// Set variables
$is_change = DB::queryFirstField("SELECT is_change_address FROM coin_addresses WHERE address = %s", $row['address']);
// Get addresses
$public_keys = array();
$keyindexes = array();
$addr_rows = DB::query("SELECT * FROM coin_addresses_multisig WHERE address = %s ORDER BY id", $row['address']);
foreach ($addr_rows as $addr_row) {
// Get public key & index
$public_key = trim($enc->decrypt(DB::queryFirstField("SELECT public_key FROM coin_wallets_keys WHERE id = %d", $addr_row['key_id'])));
$keyindex = $is_change . '/' . $addr_row['address_num'];
$keyindexes[] = $keyindex;
// Generate child key
$child_ext_key = $bip32->build_key($public_key, $keyindex)[0];
$public_keys[] = $bip32->import($child_ext_key)['key'];
}
$scriptsig = $bip32->create_redeem_script($wallet['sigs_required'], $public_keys);
$keyindex = implode(", ", $keyindexes);
} else {
$addr_row = DB::queryFirstRow("SELECT * FROM coin_addresses WHERE address = %s", $row['address']);
$keyindex = $addr_row['is_change_address'] . '/' . $addr_row['address_num'];
$decode_address = $bip32->base58_decode($row['address']);
$scriptsig = '76a914' . substr($decode_address, 2, 40) . '88ac';
}
// Add input
$vars = array('input_id' => $row['id'], 'txid' => $row['txid'], 'vout' => $row['vout'], 'amount' => $row['amount'], 'keyindex' => $keyindex, 'scriptsig' => $scriptsig);
array_push($inputs, $vars);
$input_ids[] = $row['id'];
}
// Create transaction