642 lines
23 KiB
PHP
Executable File
642 lines
23 KiB
PHP
Executable File
<?php
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class Transaction
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{
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// reverse and remove all transactions from a block
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public function reverse($block)
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{
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global $db;
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$acc = new Account();
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$r = $db->run("SELECT * FROM transactions WHERE block=:block ORDER by `version` ASC", [":block" => $block]);
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foreach ($r as $x) {
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if (empty($x['src'])) {
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$x['src'] = $acc->get_address($x['public_key']);
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}
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if ($x['version'] == 2) {
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// payment sent to alias
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$db->run(
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"UPDATE accounts SET balance=balance-:val WHERE alias=:alias",
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[":alias" => $x['dst'], ":val" => $x['val']]
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);
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} else {
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// other type of transactions
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if($x['version']!=100) { $db->run(
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"UPDATE accounts SET balance=balance-:val WHERE id=:id",
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[":id" => $x['dst'], ":val" => $x['val']]
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);
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}
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}
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// on version 0 / reward transaction, don't credit anyone
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if ($x['version'] > 0) {
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$db->run(
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"UPDATE accounts SET balance=balance+:val WHERE id=:id",
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[":id" => $x['src'], ":val" => $x['val'] + $x['fee']]
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);
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}
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// removing the alias if the alias transaction is reversed
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if ($x['version']==3) {
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$db->run(
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"UPDATE accounts SET alias=NULL WHERE id=:id",
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[":id" => $x['src']]
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);
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}
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if ($x['version']>=100&&$x['version']<110&&$x['height']>=80000) {
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if ($x['version']==100) {
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$db->run("DELETE FROM masternode WHERE public_key=:public_key", [':public_key'=>$x['public_key']]);
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} elseif ($x['version']==101) {
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$db->run(
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"UPDATE masternode SET status=1 WHERE public_key=:public_key",
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[':public_key'=>$x['public_key']]
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);
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} elseif ($x['version']==102) {
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$db->run("UPDATE masternode SET status=0 WHERE public_key=:public_key", [':public_key'=>$x['public_key']]);
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} elseif ($x['version']==103) {
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$mnt=$db->row("SELECT height, `message` FROM transactions WHERE version=100 AND public_key=:public_key ORDER by height DESC LIMIT 1", [":public_key"=>$x['public_key']]);
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$vers=$db->single(
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"SELECT `version` FROM transactions WHERE (version=101 or version=102) AND public_key=:public_key AND height>:height ORDER by height DESC LIMIT 1",
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[":public_key"=>$x['public_key'],":height"=>$mnt['height']]
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);
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$status=1;
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if ($vers==101) {
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$status=0;
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}
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$db->run(
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"INSERT into masternode SET `public_key`=:public_key, `height`=:height, `ip`=:ip, `status`=:status",
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[":public_key"=>$x['public_key'], ":height"=>$mnt['height'], ":ip"=>$mnt['message'], ":status"=>$status]
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);
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$db->run("UPDATE accounts SET balance=balance-100000 WHERE public_key=:public_key", [':public_key'=>$x['public_key']]);
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}
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}
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// internal masternode history
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if ($x['version']==111) {
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$m=explode(",", $x['message']);
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$db->run(
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"UPDATE masternode SET fails=:fails, blacklist=:blacklist, last_won=:last_won WHERE public_key=:public_key",
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[":public_key"=>$x['public_key'], ":blacklist"=> $m[0], ":fails"=>$m[2], ":last_won"=>$m[1]]
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);
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}
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// add the transactions to mempool
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if ($x['version'] > 0 && $x['version']<=110) {
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$this->add_mempool($x);
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}
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$res = $db->run("DELETE FROM transactions WHERE id=:id", [":id" => $x['id']]);
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if ($res != 1) {
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return false;
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}
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}
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}
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// clears the mempool
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public function clean_mempool()
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{
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global $db;
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$block = new Block();
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$current = $block->current();
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$height = $current['height'];
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$limit = $height - 1000;
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$db->run("DELETE FROM mempool WHERE height<:limit", [":limit" => $limit]);
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}
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// returns X transactions from mempool
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public function mempool($max)
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{
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global $db;
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$block = new Block();
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$current = $block->current();
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$height = $current['height'] + 1;
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// only get the transactions that are not locked with a future height
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$r = $db->run(
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"SELECT * FROM mempool WHERE height<=:height ORDER by val/fee DESC LIMIT :max",
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[":height" => $height, ":max" => $max + 50]
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);
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$transactions = [];
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if (count($r) > 0) {
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$i = 0;
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$balance = [];
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foreach ($r as $x) {
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$trans = [
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"id" => $x['id'],
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"dst" => $x['dst'],
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"val" => $x['val'],
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"fee" => $x['fee'],
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"signature" => $x['signature'],
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"message" => $x['message'],
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"version" => $x['version'],
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"date" => $x['date'],
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"public_key" => $x['public_key'],
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];
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if ($i >= $max) {
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break;
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}
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if (empty($x['public_key'])) {
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_log("$x[id] - Transaction has empty public_key");
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continue;
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}
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if (empty($x['src'])) {
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_log("$x[id] - Transaction has empty src");
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continue;
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}
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if (!$this->check($trans, $current['height'])) {
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_log("$x[id] - Transaction Check Failed");
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continue;
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}
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$balance[$x['src']] += $x['val'] + $x['fee'];
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if ($db->single("SELECT COUNT(1) FROM transactions WHERE id=:id", [":id" => $x['id']]) > 0) {
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_log("$x[id] - Duplicate transaction");
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continue; //duplicate transaction
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}
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$res = $db->single(
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"SELECT COUNT(1) FROM accounts WHERE id=:id AND balance>=:balance",
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[":id" => $x['src'], ":balance" => $balance[$x['src']]]
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);
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if ($res == 0) {
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_log("$x[id] - Not enough funds in balance");
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continue; // not enough balance for the transactions
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}
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$i++;
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ksort($trans);
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$transactions[$x['id']] = $trans;
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}
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}
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// always sort the array
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ksort($transactions);
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return $transactions;
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}
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// add a new transaction to mempool and lock it with the current height
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public function add_mempool($x, $peer = "")
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{
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global $db;
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$block = new Block();
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if ($x['version']>110) {
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return true;
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}
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$current = $block->current();
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$height = $current['height'];
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$x['id'] = san($x['id']);
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$bind = [
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":peer" => $peer,
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":id" => $x['id'],
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"public_key" => $x['public_key'],
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":height" => $height,
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":src" => $x['src'],
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":dst" => $x['dst'],
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":val" => $x['val'],
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":fee" => $x['fee'],
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":signature" => $x['signature'],
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":version" => $x['version'],
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":date" => $x['date'],
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":message" => $x['message'],
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];
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//only a single masternode command of same type, per block
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if ($x['version']>=100&&$x['version']<110) {
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$check=$db->single("SELECT COUNT(1) FROM mempool WHERE public_key=:public_key", [":public_key"=>$x['public_key']]);
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if ($check!=0) {
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_log("Masternode transaction already in mempool", 3);
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return false;
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}
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}
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$db->run(
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"INSERT into mempool SET peer=:peer, id=:id, public_key=:public_key, height=:height, src=:src, dst=:dst, val=:val, fee=:fee, signature=:signature, version=:version, message=:message, `date`=:date",
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$bind
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);
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return true;
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}
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// add a new transaction to the blockchain
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public function add($block, $height, $x)
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{
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global $db;
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$acc = new Account();
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$acc->add($x['public_key'], $block);
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if ($x['version']==1) {
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$acc->add_id($x['dst'], $block);
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}
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$x['id'] = san($x['id']);
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$bind = [
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":id" => $x['id'],
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":public_key" => $x['public_key'],
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":height" => $height,
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":block" => $block,
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":dst" => $x['dst'],
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":val" => $x['val'],
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":fee" => $x['fee'],
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":signature" => $x['signature'],
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":version" => $x['version'],
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":date" => $x['date'],
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":message" => $x['message'],
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];
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$res = $db->run(
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"INSERT into transactions SET id=:id, public_key=:public_key, block=:block, height=:height, dst=:dst, val=:val, fee=:fee, signature=:signature, version=:version, message=:message, `date`=:date",
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$bind
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);
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if ($res != 1) {
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return false;
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}
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if ($x['version'] == 2&&$height>=80000) {
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$db->run("UPDATE accounts SET balance=balance+:val WHERE alias=:alias", [":alias" => $x['dst'], ":val" => $x['val']]);
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} elseif ($x['version']==100&&$height>=80000) {
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//master node deposit
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} elseif ($x['version']==103&&$height>=80000) {
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$blk=new Block();
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$blk->masternode_log($x['public_key'],$height,$block);
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//master node withdrawal
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} else {
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$db->run("UPDATE accounts SET balance=balance+:val WHERE id=:id", [":id" => $x['dst'], ":val" => $x['val']]);
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}
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// no debit when the transaction is reward
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if ($x['version'] > 0) {
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$db->run(
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"UPDATE accounts SET balance=(balance-:val)-:fee WHERE id=:id",
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[":id" => $x['src'], ":val" => $x['val'], ":fee" => $x['fee']]
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);
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}
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// set the alias
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if ($x['version']==3&&$height>=80000) {
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$db->run(
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"UPDATE accounts SET alias=:alias WHERE id=:id",
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[":id" => $x['src'], ":alias"=>$x['message']]
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);
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}
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if ($x['version']>=100&&$x['version']<110&&$height>=80000) {
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$message=$x['message'];
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$message=preg_replace("/[^0-9\.]/", "", $message);
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if ($x['version']==100) {
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$db->run("INSERT into masternode SET `public_key`=:public_key, `height`=:height, `ip`=:ip, `status`=1", [":public_key"=>$x['public_key'], ":height"=>$height, ":ip"=>$message]);
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} else {
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if ($x['version']==101) {
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$db->run("UPDATE masternode SET status=0 WHERE public_key=:public_key", [':public_key'=>$x['public_key']]);
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} elseif ($x['version']==102) {
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$db->run("UPDATE masternode SET status=1 WHERE public_key=:public_key", [':public_key'=>$x['public_key']]);
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} elseif ($x['version']==103) {
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$db->run("DELETE FROM masternode WHERE public_key=:public_key", [':public_key'=>$x['public_key']]);
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$db->run("UPDATE accounts SET balance=balance+100000 WHERE public_key=:public_key", [':public_key'=>$x['public_key']]);
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}
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}
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}
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$db->run("DELETE FROM mempool WHERE id=:id", [":id" => $x['id']]);
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return true;
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}
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// hash the transaction's most important fields and create the transaction ID
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public function hash($x)
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{
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$info = $x['val']."-".$x['fee']."-".$x['dst']."-".$x['message']."-".$x['version']."-".$x['public_key']."-".$x['date']."-".$x['signature'];
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$hash = hash("sha512", $info);
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return hex2coin($hash);
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}
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// check the transaction for validity
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public function check($x, $height = 0)
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{
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// if no specific block, use current
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if ($height === 0) {
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$block = new Block();
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$current = $block->current();
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$height = $current['height'];
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}
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$acc = new Account();
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$info = $x['val']."-".$x['fee']."-".$x['dst']."-".$x['message']."-".$x['version']."-".$x['public_key']."-".$x['date'];
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// hard fork at 80000 to implement alias, new mining system, assets
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// if($x['version']>1 && $height<80000){
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// return false;
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// }
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// internal transactions
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if($x['version']>110){
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return false;
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}
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// the value must be >=0
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if ($x['val'] < 0) {
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_log("$x[id] - Value below 0", 3);
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return false;
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}
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// the fee must be >=0
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if ($x['fee'] < 0) {
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_log("$x[id] - Fee below 0", 3);
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return false;
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}
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// the fee is 0.25%, hardcoded
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$fee = $x['val'] * 0.0025;
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$fee = number_format($fee, 8, ".", "");
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if ($fee < 0.00000001) {
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$fee = 0.00000001;
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}
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//alias fee
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if ($x['version']==3&&$height>=80000) {
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$fee=10;
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if (!$acc->free_alias($x['message'])) {
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_log("Alias not free", 3);
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return false;
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}
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// alias can only be set once per account
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if ($acc->has_alias($x['public_key'])) {
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_log("The account already has an alias", 3);
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return false;
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}
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}
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//masternode transactions
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if ($x['version']>=100&&$x['version']<110&&$height>=80000) {
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if ($x['version']==100) {
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$message=$x['message'];
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$message=preg_replace("/[^0-9\.]/", "", $message);
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if (!filter_var($message, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
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_log("The Masternode IP is invalid", 3);
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return false;
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}
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global $db;
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$existing=$db->single("SELECT COUNT(1) FROM masternode WHERE public_key=:id or ip=:ip",["id"=>$x['public_key'], ":ip"=>$message]);
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if($existing!=0){
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return false;
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}
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}
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if ($x['version']==100&&$x['val']!=100000) {
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_log("The masternode transaction is not 100k", 3);
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return false;
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} elseif ($x['version']!=100) {
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$mn=$acc->get_masternode($x['public_key']);
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if (!$mn) {
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_log("The masternode does not exist", 3);
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return false;
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}
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if ($x['version']==101&&$mn['status']!=1) {
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_log("The masternode does is not running", 3);
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return false;
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} elseif ($x['version']==102 && $mn['status']!=0) {
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_log("The masternode is not paused", 3);
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return false;
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} elseif ($x['version']==103) {
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if ($mn['status']!=0) {
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_log("The masternode is not paused", 3);
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return false;
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} elseif ($height-$mn['last_won']<10800) { //10800
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_log("The masternode last won block is less than 10800 blocks", 3);
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return false;
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} elseif ($height-$mn['height']<32400) { //32400
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_log("The masternode start height is less than 32400 blocks! $height - $mn[height]", 3);
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return false;
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}
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}
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}
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}
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// max fee after block 10800 is 10
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if ($height > 10800 && $fee > 10) {
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$fee = 10; //10800
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}
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// added fee does not match
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if ($fee != $x['fee']) {
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_log("$x[id] - Fee not 0.25%", 3);
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_log(json_encode($x), 3);
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return false;
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}
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if ($x['version']==1) {
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// invalid destination address
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if (!$acc->valid($x['dst'])) {
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_log("$x[id] - Invalid destination address", 3);
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return false;
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}
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} elseif ($x['version']==2&&$height>=80000) {
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if (!$acc->valid_alias($x['dst'])) {
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_log("$x[id] - Invalid destination alias", 3);
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return false;
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}
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}
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// reward transactions are not added via this function
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if ($x['version'] < 1) {
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_log("$x[id] - Invalid version <1", 3);
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return false;
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}
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//if($x['version']>1) { _log("$x[id] - Invalid version >1"); return false; }
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// public key must be at least 15 chars / probably should be replaced with the validator function
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if (strlen($x['public_key']) < 15) {
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_log("$x[id] - Invalid public key size", 3);
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return false;
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}
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// no transactions before the genesis
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if ($x['date'] < 1511725068) {
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_log("$x[id] - Date before genesis", 3);
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return false;
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}
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// no future transactions
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if ($x['date'] > time() + 86400) {
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_log("$x[id] - Date in the future", 3);
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return false;
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}
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// prevent the resending of broken base58 transactions
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if ($height > 16900 && $x['date'] < 1519327780) {
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_log("$x[id] - Broken base58 transaction", 3);
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return false;
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}
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$id = $this->hash($x);
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// the hash does not match our regenerated hash
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if ($x['id'] != $id) {
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// fix for broken base58 library which was used until block 16900, accepts hashes without the first 1 or 2 bytes
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$xs = base58_decode($x['id']);
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if (((strlen($xs) != 63 || substr($id, 1) != $x['id']) && (strlen($xs) != 62 || substr(
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$id,
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2
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) != $x['id'])) || $height > 16900) {
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_log("$x[id] - $id - Invalid hash");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
//verify the ecdsa signature
|
|
if (!$acc->check_signature($info, $x['signature'], $x['public_key'])) {
|
|
_log("$x[id] - Invalid signature - $info");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// sign a transaction
|
|
public function sign($x, $private_key)
|
|
{
|
|
$info = $x['val']."-".$x['fee']."-".$x['dst']."-".$x['message']."-".$x['version']."-".$x['public_key']."-".$x['date'];
|
|
|
|
$signature = ec_sign($info, $private_key);
|
|
|
|
return $signature;
|
|
}
|
|
|
|
//export a mempool transaction
|
|
public function export($id)
|
|
{
|
|
global $db;
|
|
$r = $db->row("SELECT * FROM mempool WHERE id=:id", [":id" => $id]);
|
|
return $r;
|
|
}
|
|
|
|
// get the transaction data as array
|
|
public function get_transaction($id)
|
|
{
|
|
global $db;
|
|
$acc = new Account();
|
|
$block = new Block();
|
|
$current = $block->current();
|
|
|
|
$x = $db->row("SELECT * FROM transactions WHERE id=:id", [":id" => $id]);
|
|
|
|
if (!$x) {
|
|
return false;
|
|
}
|
|
$trans = [
|
|
"block" => $x['block'],
|
|
"height" => $x['height'],
|
|
"id" => $x['id'],
|
|
"dst" => $x['dst'],
|
|
"val" => $x['val'],
|
|
"fee" => $x['fee'],
|
|
"signature" => $x['signature'],
|
|
"message" => $x['message'],
|
|
"version" => $x['version'],
|
|
"date" => $x['date'],
|
|
"public_key" => $x['public_key'],
|
|
];
|
|
$trans['src'] = $acc->get_address($x['public_key']);
|
|
$trans['confirmations'] = $current['height'] - $x['height'];
|
|
|
|
if ($x['version'] == 0) {
|
|
$trans['type'] = "mining";
|
|
} elseif ($x['version'] == 1 || $x['version'] == 2) {
|
|
if ($x['dst'] == $id) {
|
|
$trans['type'] = "credit";
|
|
} else {
|
|
$trans['type'] = "debit";
|
|
}
|
|
} else {
|
|
$trans['type'] = "other";
|
|
}
|
|
ksort($trans);
|
|
return $trans;
|
|
}
|
|
|
|
// return the transactions for a specific block id or height
|
|
public function get_transactions($height = "", $id = "")
|
|
{
|
|
global $db;
|
|
$block = new Block();
|
|
$current = $block->current();
|
|
$acc = new Account();
|
|
$height = san($height);
|
|
$id = san($id);
|
|
if (empty($id) && empty($height)) {
|
|
return false;
|
|
}
|
|
if (!empty($id)) {
|
|
$r = $db->run("SELECT * FROM transactions WHERE block=:id AND version>0", [":id" => $id]);
|
|
} else {
|
|
$r = $db->run("SELECT * FROM transactions WHERE height=:height AND version>0", [":height" => $height]);
|
|
}
|
|
$res = [];
|
|
foreach ($r as $x) {
|
|
if ($x['version']>110) {
|
|
continue; //internal transactions
|
|
}
|
|
$trans = [
|
|
"block" => $x['block'],
|
|
"height" => $x['height'],
|
|
"id" => $x['id'],
|
|
"dst" => $x['dst'],
|
|
"val" => $x['val'],
|
|
"fee" => $x['fee'],
|
|
"signature" => $x['signature'],
|
|
"message" => $x['message'],
|
|
"version" => $x['version'],
|
|
"date" => $x['date'],
|
|
"public_key" => $x['public_key'],
|
|
];
|
|
$trans['src'] = $acc->get_address($x['public_key']);
|
|
$trans['confirmations'] = $current['height'] - $x['height'];
|
|
|
|
if ($x['version'] == 0) {
|
|
$trans['type'] = "mining";
|
|
} elseif ($x['version'] == 1||$x['version'] == 2) {
|
|
if ($x['dst'] == $id) {
|
|
$trans['type'] = "credit";
|
|
} else {
|
|
$trans['type'] = "debit";
|
|
}
|
|
} else {
|
|
$trans['type'] = "other";
|
|
}
|
|
ksort($trans);
|
|
$res[] = $trans;
|
|
}
|
|
return $res;
|
|
}
|
|
|
|
// get a specific mempool transaction as array
|
|
public function get_mempool_transaction($id)
|
|
{
|
|
global $db;
|
|
$x = $db->row("SELECT * FROM mempool WHERE id=:id", [":id" => $id]);
|
|
if (!$x) {
|
|
return false;
|
|
}
|
|
$trans = [
|
|
"block" => $x['block'],
|
|
"height" => $x['height'],
|
|
"id" => $x['id'],
|
|
"dst" => $x['dst'],
|
|
"val" => $x['val'],
|
|
"fee" => $x['fee'],
|
|
"signature" => $x['signature'],
|
|
"message" => $x['message'],
|
|
"version" => $x['version'],
|
|
"date" => $x['date'],
|
|
"public_key" => $x['public_key'],
|
|
];
|
|
$trans['src'] = $x['src'];
|
|
|
|
$trans['type'] = "mempool";
|
|
$trans['confirmations'] = -1;
|
|
ksort($trans);
|
|
return $trans;
|
|
}
|
|
}
|