280 lines
11 KiB
PHP
Executable File
280 lines
11 KiB
PHP
Executable File
<?php
|
|
/*
|
|
The MIT License (MIT)
|
|
Copyright (c) 2018 AroDev
|
|
|
|
www.arionum.com
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in all
|
|
copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
|
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
|
|
OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
require_once("include/init.inc.php");
|
|
$trx = new Transaction();
|
|
$block = new Block();
|
|
$q = $_GET['q'];
|
|
// the data is sent as json, in $_POST['data']
|
|
if (!empty($_POST['data'])) {
|
|
$data = json_decode(trim($_POST['data']), true);
|
|
}
|
|
|
|
// make sure it's the same coin and not testnet
|
|
if ($_POST['coin'] != $_config['coin']) {
|
|
api_err("Invalid coin");
|
|
}
|
|
$ip = san_ip($_SERVER['REMOTE_ADDR']);
|
|
$ip = filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE);
|
|
|
|
// peer with the current node
|
|
if ($q == "peer") {
|
|
// sanitize the hostname
|
|
$hostname = filter_var($data['hostname'], FILTER_SANITIZE_URL);
|
|
|
|
$bad_peers = ["127.", "localhost", "10.", "192.168.","172.16.","172.17.","172.18.","172.19.","172.20.","172.21.","172.22.","172.23.","172.24.","172.25.","172.26.","172.27.","172.28.","172.29.","172.30.","172.31."];
|
|
$tpeer=str_replace(["https://","http://","//"], "", $hostname);
|
|
foreach ($bad_peers as $bp) {
|
|
if (strpos($tpeer, $bp)===0) {
|
|
api_err("invalid-hostname");
|
|
}
|
|
}
|
|
|
|
if (!filter_var($hostname, FILTER_VALIDATE_URL)) {
|
|
api_err("invalid-hostname");
|
|
}
|
|
$hostname = san_host($hostname);
|
|
// if it's already peered, only repeer on request
|
|
$res = $db->single(
|
|
"SELECT COUNT(1) FROM peers WHERE hostname=:hostname AND ip=:ip",
|
|
[":hostname" => $hostname, ":ip" => $ip]
|
|
);
|
|
if ($res == 1) {
|
|
if ($data['repeer'] == 1) {
|
|
$res = peer_post($hostname."/peer.php?q=peer", ["hostname" => $_config['hostname']]);
|
|
if ($res !== false) {
|
|
api_echo("re-peer-ok");
|
|
} else {
|
|
api_err("re-peer failed - $result");
|
|
}
|
|
}
|
|
api_echo("peer-ok-already");
|
|
}
|
|
// if we have enough peers, add it to DB as reserve
|
|
$res = $db->single("SELECT COUNT(1) FROM peers WHERE blacklisted<UNIX_TIMESTAMP() AND ping >UNIX_TIMESTAMP()-86400 AND reserve=0");
|
|
$reserve = 1;
|
|
if ($res < $_config['max_peers']) {
|
|
$reserve = 0;
|
|
}
|
|
$db->run(
|
|
"INSERT ignore INTO peers SET hostname=:hostname, reserve=:reserve, ping=UNIX_TIMESTAMP(), ip=:ip ON DUPLICATE KEY UPDATE hostname=:hostname2",
|
|
[":ip" => $ip, ":hostname2" => $hostname, ":hostname" => $hostname, ":reserve" => $reserve]
|
|
);
|
|
// re-peer to make sure the peer is valid
|
|
$res = peer_post($hostname."/peer.php?q=peer", ["hostname" => $_config['hostname']]);
|
|
if ($res !== false) {
|
|
api_echo("re-peer-ok");
|
|
} else {
|
|
$db->run("DELETE FROM peers WHERE ip=:ip", [":ip" => $ip]);
|
|
api_err("re-peer failed - $result");
|
|
}
|
|
} elseif ($q == "ping") {
|
|
// confirm peer is active
|
|
api_echo("pong");
|
|
} elseif ($q == "submitTransaction") {
|
|
// receive a new transaction from a peer
|
|
$current = $block->current();
|
|
|
|
|
|
// no transactions accepted if the sanity is syncing
|
|
if ($_config['sanity_sync'] == 1) {
|
|
api_err("sanity-sync");
|
|
}
|
|
|
|
$data['id'] = san($data['id']);
|
|
// validate transaction data
|
|
if (!$trx->check($data)) {
|
|
api_err("Invalid transaction");
|
|
}
|
|
$hash = $data['id'];
|
|
// make sure it's not already in mempool
|
|
$res = $db->single("SELECT COUNT(1) FROM mempool WHERE id=:id", [":id" => $hash]);
|
|
if ($res != 0) {
|
|
api_err("The transaction is already in mempool");
|
|
}
|
|
// make sure the peer is not flooding us with transactions
|
|
$res = $db->single("SELECT COUNT(1) FROM mempool WHERE src=:src", [":src" => $data['src']]);
|
|
if ($res > 25) {
|
|
api_err("Too many transactions from this address in mempool. Please rebroadcast later.");
|
|
}
|
|
$res = $db->single("SELECT COUNT(1) FROM mempool WHERE peer=:peer", [":peer" => $ip]);
|
|
if ($res > $_config['peer_max_mempool']) {
|
|
api_error("Too many transactions broadcasted from this peer");
|
|
}
|
|
|
|
|
|
// make sure the transaction is not already on the blockchain
|
|
$res = $db->single("SELECT COUNT(1) FROM transactions WHERE id=:id", [":id" => $hash]);
|
|
if ($res != 0) {
|
|
api_err("The transaction is already in a block");
|
|
}
|
|
$acc = new Account();
|
|
$src = $acc->get_address($data['public_key']);
|
|
// make sure the sender has enough balance
|
|
$balance = $db->single("SELECT balance FROM accounts WHERE id=:id", [":id" => $src]);
|
|
if ($balance < $val + $fee) {
|
|
api_err("Not enough funds");
|
|
}
|
|
|
|
// make sure the sender has enough pending balance
|
|
$memspent = $db->single("SELECT SUM(val+fee) FROM mempool WHERE src=:src", [":src" => $src]);
|
|
if ($balance - $memspent < $val + $fee) {
|
|
api_err("Not enough funds (mempool)");
|
|
}
|
|
|
|
// add to mempool
|
|
$trx->add_mempool($data, $ip);
|
|
|
|
// rebroadcast the transaction to some peers unless the transaction is smaller than the average size of transactions in mempool - protect against garbage data flooding
|
|
$res = $db->row("SELECT COUNT(1) as c, sum(val) as v FROM mempool ", [":src" => $data['src']]);
|
|
if ($res['c'] < $_config['max_mempool_rebroadcast'] && $res['v'] / $res['c'] < $data['val']) {
|
|
system("php propagate.php transaction '$data[id]' > /dev/null 2>&1 &");
|
|
}
|
|
api_echo("transaction-ok");
|
|
} elseif ($q == "submitBlock") {
|
|
// receive a new block from a peer
|
|
|
|
// if sanity sync, refuse all
|
|
if ($_config['sanity_sync'] == 1) {
|
|
_log('['.$ip."] Block rejected due to sanity sync");
|
|
api_err("sanity-sync");
|
|
}
|
|
$data['id'] = san($data['id']);
|
|
$current = $block->current();
|
|
// block already in the blockchain
|
|
if ($current['id'] == $data['id']) {
|
|
api_echo("block-ok");
|
|
}
|
|
if ($data['date'] > time() + 30) {
|
|
api_err("block in the future");
|
|
}
|
|
|
|
if ($current['height'] == $data['height'] && $current['id'] != $data['id']) {
|
|
// different forks, same height
|
|
$accept_new = false;
|
|
|
|
// convert the first 12 characters from hex to decimal and the block with the largest number wins
|
|
$no1 = hexdec(substr(coin2hex($current['id']), 0, 12));
|
|
$no2 = hexdec(substr(coin2hex($data['id']), 0, 12));
|
|
if (gmp_cmp($no1, $no2) == 1) {
|
|
$accept_new = true;
|
|
}
|
|
|
|
if ($accept_new) {
|
|
// if the new block is accepted, run a microsanity to sync it
|
|
_log('['.$ip."] Starting microsanity - $data[height]");
|
|
system("php sanity.php microsanity '$ip' > /dev/null 2>&1 &");
|
|
api_echo("microsanity");
|
|
} else {
|
|
_log('['.$ip."] suggesting reverse-microsanity - $data[height]");
|
|
api_echo("reverse-microsanity"); // if it's not, suggest to the peer to get the block from us
|
|
}
|
|
}
|
|
// if it's not the next block
|
|
if ($current['height'] != $data['height'] - 1) {
|
|
// if the height of the block submitted is lower than our current height, send them our current block
|
|
if ($data['height'] < $current['height']) {
|
|
$pr = $db->row("SELECT * FROM peers WHERE ip=:ip", [":ip" => $ip]);
|
|
if (!$pr) {
|
|
api_err("block-too-old");
|
|
}
|
|
$peer_host = base58_encode($pr['hostname']);
|
|
$pr['ip'] = escapeshellcmd(san_ip($pr['ip']));
|
|
system("php propagate.php block current '$peer_host' '$pr[ip]' > /dev/null 2>&1 &");
|
|
_log('['.$ip."] block too old, sending our current block - $data[height]");
|
|
|
|
api_err("block-too-old");
|
|
}
|
|
// if the block difference is bigger than 150, nothing should be done. They should sync via sanity
|
|
if ($data['height'] - $current['height'] > 150) {
|
|
_log('['.$ip."] block-out-of-sync - $data[height]");
|
|
api_err("block-out-of-sync");
|
|
}
|
|
// request them to send us a microsync with the latest blocks
|
|
_log('['.$ip."] requesting microsync - $current[height] - $data[height]");
|
|
api_echo(["request" => "microsync", "height" => $current['height'], "block" => $current['id']]);
|
|
}
|
|
// check block data
|
|
if (!$block->check($data)) {
|
|
_log('['.$ip."] invalid block - $data[height]");
|
|
api_err("invalid-block");
|
|
}
|
|
$b = $data;
|
|
// add the block to the blockchain
|
|
$res = $block->add(
|
|
$b['height'],
|
|
$b['public_key'],
|
|
$b['nonce'],
|
|
$b['data'],
|
|
$b['date'],
|
|
$b['signature'],
|
|
$b['difficulty'],
|
|
$b['reward_signature'],
|
|
$b['argon']
|
|
);
|
|
|
|
if (!$res) {
|
|
_log('['.$ip."] invalid block data - $data[height]");
|
|
api_err("invalid-block-data");
|
|
}
|
|
|
|
_log('['.$ip."] block ok, repropagating - $data[height]");
|
|
|
|
// send it to all our peers
|
|
system("php propagate.php block '$data[id]' all all linear > /dev/null 2>&1 &");
|
|
api_echo("block-ok");
|
|
} // return the current block, used in syncing
|
|
elseif ($q == "currentBlock") {
|
|
$current = $block->current();
|
|
api_echo($current);
|
|
} // return a specific block, used in syncing
|
|
elseif ($q == "getBlock") {
|
|
$height = intval($data['height']);
|
|
$export = $block->export("", $height);
|
|
if (!$export) {
|
|
api_err("invalid-block");
|
|
}
|
|
api_echo($export);
|
|
} elseif ($q == "getBlocks") {
|
|
// returns X block starting at height, used in syncing
|
|
|
|
$height = intval($data['height']);
|
|
|
|
$r = $db->run(
|
|
"SELECT id,height FROM blocks WHERE height>=:height ORDER by height ASC LIMIT 100",
|
|
[":height" => $height]
|
|
);
|
|
foreach ($r as $x) {
|
|
$blocks[$x['height']] = $block->export($x['id']);
|
|
}
|
|
api_echo($blocks);
|
|
} // returns a full list of unblacklisted peers in a random order
|
|
elseif ($q == "getPeers") {
|
|
$peers = $db->run("SELECT ip,hostname FROM peers WHERE blacklisted<UNIX_TIMESTAMP() ORDER by RAND()");
|
|
api_echo($peers);
|
|
} else {
|
|
api_err("Invalid request");
|
|
}
|