Update Transaction class to use PSR-2

This commit is contained in:
pxgamer
2018-05-29 15:41:58 +01:00
parent c82e68c9b2
commit f95d94f205

View File

@@ -1,275 +1,429 @@
<?php
class Transaction {
class Transaction
{
// reverse and remove all transactions from a block
public function reverse($block){
public function reverse($block)
{
global $db;
$acc=new Account;
$r=$db->run("SELECT * FROM transactions WHERE block=:block",array(":block"=>$block));
foreach($r as $x){
if(empty($x['src'])) $x['src']=$acc->get_address($x['public_key']);
$db->run("UPDATE accounts SET balance=balance-:val WHERE id=:id",array(":id"=>$x['dst'], ":val"=>$x['val']));
$acc = new Account;
$r = $db->run("SELECT * FROM transactions WHERE block=:block", [":block" => $block]);
foreach ($r as $x) {
if (empty($x['src'])) {
$x['src'] = $acc->get_address($x['public_key']);
}
$db->run(
"UPDATE accounts SET balance=balance-:val WHERE id=:id",
[":id" => $x['dst'], ":val" => $x['val']]
);
// on version 0 / reward transaction, don't credit anyone
if($x['version']>0) $db->run("UPDATE accounts SET balance=balance+:val WHERE id=:id",array(":id"=>$x['src'], ":val"=>$x['val']+$x['fee']));
// add the transactions to mempool
if($x['version']>0) $this->add_mempool($x);
$res= $db->run("DELETE FROM transactions WHERE id=:id",array(":id"=>$x['id']));
if($res!=1) return false;
}
}
// clears the mempool
public function clean_mempool(){
global $db;
$block= new Block;
$current=$block->current();
$height=$current['height'];
$limit=$height-1000;
$db->run("DELETE FROM mempool WHERE height<:limit",array(":limit"=>$limit));
}
// returns X transactions from mempool
public function mempool($max){
global $db;
$block=new Block;
$current=$block->current();
$height=$current['height']+1;
// only get the transactions that are not locked with a future height
$r=$db->run("SELECT * FROM mempool WHERE height<=:height ORDER by val/fee DESC LIMIT :max",array(":height"=>$height, ":max"=>$max+50));
$transactions=array();
if(count($r)>0){
$i=0;
$balance=array();
foreach($r as $x){
$trans=array("id"=>$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']);
if($i>=$max) break;
// on version 0 / reward transaction, don't credit anyone
if ($x['version'] > 0) {
$db->run(
"UPDATE accounts SET balance=balance+:val WHERE id=:id",
[":id" => $x['src'], ":val" => $x['val'] + $x['fee']]
);
}
if(empty($x['public_key'])){
_log("$x[id] - Transaction has empty public_key");
continue;
}
if(empty($x['src'])){
_log("$x[id] - Transaction has empty src");
continue;
}
if(!$this->check($trans, $current['height'])){
_log("$x[id] - Transaction Check Failed");
continue;
}
$balance[$x['src']]+=$x['val']+$x['fee'];
if($db->single("SELECT COUNT(1) FROM transactions WHERE id=:id",array(":id"=>$x['id']))>0) {
_log("$x[id] - Duplicate transaction");
continue; //duplicate transaction
}
$res=$db->single("SELECT COUNT(1) FROM accounts WHERE id=:id AND balance>=:balance",array(":id"=>$x['src'], ":balance"=>$balance[$x['src']]));
if($res==0) {
_log("$x[id] - Not enough funds in balance");
continue; // not enough balance for the transactions
}
$i++;
ksort($trans);
$transactions[$x['id']]=$trans;
}
// add the transactions to mempool
if ($x['version'] > 0) {
$this->add_mempool($x);
}
$res = $db->run("DELETE FROM transactions WHERE id=:id", [":id" => $x['id']]);
if ($res != 1) {
return false;
}
}
// always sort the array
}
// clears the mempool
public function clean_mempool()
{
global $db;
$block = new Block;
$current = $block->current();
$height = $current['height'];
$limit = $height - 1000;
$db->run("DELETE FROM mempool WHERE height<:limit", [":limit" => $limit]);
}
// returns X transactions from mempool
public function mempool($max)
{
global $db;
$block = new Block;
$current = $block->current();
$height = $current['height'] + 1;
// only get the transactions that are not locked with a future height
$r = $db->run(
"SELECT * FROM mempool WHERE height<=:height ORDER by val/fee DESC LIMIT :max",
[":height" => $height, ":max" => $max + 50]
);
$transactions = [];
if (count($r) > 0) {
$i = 0;
$balance = [];
foreach ($r as $x) {
$trans = ["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" => $x['public_key'],
];
if ($i >= $max) {
break;
}
if (empty($x['public_key'])) {
_log("$x[id] - Transaction has empty public_key");
continue;
}
if (empty($x['src'])) {
_log("$x[id] - Transaction has empty src");
continue;
}
if (!$this->check($trans, $current['height'])) {
_log("$x[id] - Transaction Check Failed");
continue;
}
$balance[$x['src']] += $x['val'] + $x['fee'];
if ($db->single("SELECT COUNT(1) FROM transactions WHERE id=:id", [":id" => $x['id']]) > 0) {
_log("$x[id] - Duplicate transaction");
continue; //duplicate transaction
}
$res = $db->single(
"SELECT COUNT(1) FROM accounts WHERE id=:id AND balance>=:balance",
[":id" => $x['src'], ":balance" => $balance[$x['src']]]
);
if ($res == 0) {
_log("$x[id] - Not enough funds in balance");
continue; // not enough balance for the transactions
}
$i++;
ksort($trans);
$transactions[$x['id']] = $trans;
}
}
// always sort the array
ksort($transactions);
return $transactions;
}
// add a new transaction to mempool and lock it with the current height
public function add_mempool($x, $peer=""){
public function add_mempool($x, $peer = "")
{
global $db;
$block= new Block;
$current=$block->current();
$height=$current['height'];
$x['id']=san($x['id']);
$bind=array(":peer"=>$peer, ":id"=>$x['id'],"public_key"=>$x['public_key'], ":height"=>$height, ":src"=>$x['src'],":dst"=>$x['dst'],":val"=>$x['val'], ":fee"=>$x['fee'],":signature"=>$x['signature'], ":version"=>$x['version'],":date"=>$x['date'], ":message"=>$x['message']);
$db->run("INSERT into mempool SET peer=:peer, id=:id, public_key=:public_key, height=:height, src=:src, dst=:dst, val=:val, fee=:fee, signature=:signature, version=:version, message=:message, `date`=:date",$bind);
$block = new Block;
$current = $block->current();
$height = $current['height'];
$x['id'] = san($x['id']);
$bind = [":peer" => $peer,
":id" => $x['id'],
"public_key" => $x['public_key'],
":height" => $height,
":src" => $x['src'],
":dst" => $x['dst'],
":val" => $x['val'],
":fee" => $x['fee'],
":signature" => $x['signature'],
":version" => $x['version'],
":date" => $x['date'],
":message" => $x['message'],
];
$db->run(
"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",
$bind
);
return true;
}
// add a new transaction to the blockchain
public function add($block,$height, $x){
public function add($block, $height, $x)
{
global $db;
$acc= new Account;
$acc = new Account;
$acc->add($x['public_key'], $block);
$acc->add_id($x['dst'],$block);
$x['id']=san($x['id']);
$bind=array(":id"=>$x['id'], ":public_key"=>$x['public_key'],":height"=>$height, ":block"=>$block, ":dst"=>$x['dst'],":val"=>$x['val'], ":fee"=>$x['fee'],":signature"=>$x['signature'], ":version"=>$x['version'],":date"=>$x['date'], ":message"=>$x['message']);
$res=$db->run("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",$bind);
if($res!=1) return false;
$db->run("UPDATE accounts SET balance=balance+:val WHERE id=:id",array(":id"=>$x['dst'], ":val"=>$x['val']));
// no debit when the transaction is reward
if($x['version']>0) $db->run("UPDATE accounts SET balance=(balance-:val)-:fee WHERE id=:id",array(":id"=>$x['src'], ":val"=>$x['val'], ":fee"=>$x['fee']));
$db->run("DELETE FROM mempool WHERE id=:id",array(":id"=>$x['id']));
$acc->add_id($x['dst'], $block);
$x['id'] = san($x['id']);
$bind = [":id" => $x['id'],
":public_key" => $x['public_key'],
":height" => $height,
":block" => $block,
":dst" => $x['dst'],
":val" => $x['val'],
":fee" => $x['fee'],
":signature" => $x['signature'],
":version" => $x['version'],
":date" => $x['date'],
":message" => $x['message'],
];
$res = $db->run(
"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",
$bind
);
if ($res != 1) {
return false;
}
$db->run("UPDATE accounts SET balance=balance+:val WHERE id=:id", [":id" => $x['dst'], ":val" => $x['val']]);
// no debit when the transaction is reward
if ($x['version'] > 0) {
$db->run(
"UPDATE accounts SET balance=(balance-:val)-:fee WHERE id=:id",
[":id" => $x['src'], ":val" => $x['val'], ":fee" => $x['fee']]
);
}
$db->run("DELETE FROM mempool WHERE id=:id", [":id" => $x['id']]);
return true;
}
// hash the transaction's most important fields and create the transaction ID
public function hash($x){
$info=$x['val']."-".$x['fee']."-".$x['dst']."-".$x['message']."-".$x['version']."-".$x['public_key']."-".$x['date']."-".$x['signature'];
$hash= hash("sha512",$info);
return hex2coin($hash);
public function hash($x)
{
$info = $x['val']."-".$x['fee']."-".$x['dst']."-".$x['message']."-".$x['version']."-".$x['public_key']."-".$x['date']."-".$x['signature'];
$hash = hash("sha512", $info);
return hex2coin($hash);
}
// check the transaction for validity
public function check($x, $height=0){
// if no specific block, use current
if($height===0){
$block=new Block;
$current=$block->current();
$height=$current['height'];
}
$acc= new Account;
$info=$x['val']."-".$x['fee']."-".$x['dst']."-".$x['message']."-".$x['version']."-".$x['public_key']."-".$x['date'];
public function check($x, $height = 0)
{
// if no specific block, use current
if ($height === 0) {
$block = new Block;
$current = $block->current();
$height = $current['height'];
}
$acc = new Account;
$info = $x['val']."-".$x['fee']."-".$x['dst']."-".$x['message']."-".$x['version']."-".$x['public_key']."-".$x['date'];
// the value must be >=0
if($x['val']<0){ _log("$x[id] - Value below 0"); return false; }
// the fee must be >=0
if($x['fee']<0) { _log("$x[id] - Fee below 0"); return false; }
// the fee is 0.25%, hardcoded
$fee=$x['val']*0.0025;
$fee=number_format($fee,8,".","");
if($fee<0.00000001) $fee=0.00000001;
// max fee after block 10800 is 10
if($height>10800&&$fee>10) $fee=10; //10800
// added fee does not match
if($fee!=$x['fee']) { _log("$x[id] - Fee not 0.25%"); return false; }
// the value must be >=0
if ($x['val'] < 0) {
_log("$x[id] - Value below 0");
return false;
}
// invalid destination address
if(!$acc->valid($x['dst'])) { _log("$x[id] - Invalid destination address"); return false; }
// reward transactions are not added via this function
if($x['version']<1) { _log("$x[id] - Invalid version <1"); return false; }
//if($x['version']>1) { _log("$x[id] - Invalid version >1"); return false; }
// public key must be at least 15 chars / probably should be replaced with the validator function
if(strlen($x['public_key'])<15) { _log("$x[id] - Invalid public key size"); return false; }
// no transactions before the genesis
if($x['date']<1511725068) { _log("$x[id] - Date before genesis"); return false; }
// no future transactions
if($x['date']>time()+86400) { _log("$x[id] - Date in the future"); return false; }
// prevent the resending of broken base58 transactions
if($height>16900&&$x['date']<1519327780) return false;
$id=$this->hash($x);
// the hash does not match our regenerated hash
if($x['id']!=$id) {
// fix for broken base58 library which was used until block 16900, accepts hashes without the first 1 or 2 bytes
$xs=base58_decode($x['id']);
if(((strlen($xs)!=63||substr($id,1)!=$x['id'])&&(strlen($xs)!=62||substr($id,2)!=$x['id']))||$height>16900){
_log("$x[id] - $id - Invalid hash");
return false;
}
// the fee must be >=0
if ($x['fee'] < 0) {
_log("$x[id] - Fee below 0");
return false;
}
}
//verify the ecdsa signature
if(!$acc->check_signature($info, $x['signature'], $x['public_key'])) { _log("$x[id] - Invalid signature"); return false; }
return true;
// the fee is 0.25%, hardcoded
$fee = $x['val'] * 0.0025;
$fee = number_format($fee, 8, ".", "");
if ($fee < 0.00000001) {
$fee = 0.00000001;
}
// max fee after block 10800 is 10
if ($height > 10800 && $fee > 10) {
$fee = 10; //10800
}
// added fee does not match
if ($fee != $x['fee']) {
_log("$x[id] - Fee not 0.25%");
return false;
}
// invalid destination address
if (!$acc->valid($x['dst'])) {
_log("$x[id] - Invalid destination address");
return false;
}
// reward transactions are not added via this function
if ($x['version'] < 1) {
_log("$x[id] - Invalid version <1");
return false;
}
//if($x['version']>1) { _log("$x[id] - Invalid version >1"); return false; }
// public key must be at least 15 chars / probably should be replaced with the validator function
if (strlen($x['public_key']) < 15) {
_log("$x[id] - Invalid public key size");
return false;
}
// no transactions before the genesis
if ($x['date'] < 1511725068) {
_log("$x[id] - Date before genesis");
return false;
}
// no future transactions
if ($x['date'] > time() + 86400) {
_log("$x[id] - Date in the future");
return false;
}
// prevent the resending of broken base58 transactions
if ($height > 16900 && $x['date'] < 1519327780) {
return false;
}
$id = $this->hash($x);
// the hash does not match our regenerated hash
if ($x['id'] != $id) {
// fix for broken base58 library which was used until block 16900, accepts hashes without the first 1 or 2 bytes
$xs = base58_decode($x['id']);
if (((strlen($xs) != 63 || substr($id, 1) != $x['id']) && (strlen($xs) != 62 || substr(
$id,
2
) != $x['id'])) || $height > 16900) {
_log("$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");
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 $signature;
// sign a transaction
public function sign($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){
public function export($id)
{
global $db;
$r=$db->row("SELECT * FROM mempool WHERE id=:id",array(":id"=>$id));
$r = $db->row("SELECT * FROM mempool WHERE id=:id", [":id" => $id]);
return $r;
}
// get the transaction data as array
public function get_transaction($id){
public function get_transaction($id)
{
global $db;
$acc=new Account;
$block=new Block;
$current=$block->current();
$acc = new Account;
$block = new Block;
$current = $block->current();
$x=$db->row("SELECT * FROM transactions WHERE id=:id",array(":id"=>$id));
if(!$x) return false;
$trans=array("block"=>$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'];
$x = $db->row("SELECT * FROM transactions WHERE id=:id", [":id" => $id]);
if($x['version']==0) $trans['type']="mining";
elseif($x['version']==1){
if($x['dst']==$id) $trans['type']="credit";
else $trans['type']="debit";
} else {
$trans['type']="other";
}
ksort($trans);
return $trans;
if (!$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) {
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="", $id=""){
// return the transactions for a specific block id or height
public function get_transactions($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",array(":id"=>$id));
else $r=$db->run("SELECT * FROM transactions WHERE height=:height AND version>0",array(":height"=>$height));
$res=array();
foreach($r as $x){
$trans=array("block"=>$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){
if($x['dst']==$id) $trans['type']="credit";
else $trans['type']="debit";
} else {
$trans['type']="other";
}
ksort($trans);
$res[]=$trans;
}
return $res;
$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) {
$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) {
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){
public function get_mempool_transaction($id)
{
global $db;
$x=$db->row("SELECT * FROM mempool WHERE id=:id",array(":id"=>$id));
if(!$x) return false;
$trans=array("block"=>$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'];
$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;
$trans['type'] = "mempool";
$trans['confirmations'] = -1;
ksort($trans);
return $trans;
}
}
?>