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api.php
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api.php
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<?php
header('Access-Control-Allow-Origin: *');
include './checkAdmin.php';
include './Webhook.php';
require_once 'libs/jsonRPCClient.php';
$gethRPC = new jsonRPCClient('http://127.0.0.1:8545');
if(isset($_REQUEST['balance'])){
header('Content-Type: application/json');
echo getEthBalance($_REQUEST['balance'],$gethRPC);
} else if(isset($_REQUEST['rawtx'])){
header('Content-Type: application/json');
echo sendRawTransaction($_REQUEST['rawtx'],$gethRPC);
} else if(isset($_REQUEST['txdata'])){
header('Content-Type: application/json');
echo getTransactionData($_REQUEST['txdata'],$gethRPC);
} else if(isset($_REQUEST['estimatedGas'])){
header('Content-Type: application/json');
echo getEstimatedGas($_REQUEST['estimatedGas'],$gethRPC);
} else if(isset($_REQUEST['ethCall'])){
header('Content-Type: application/json');
echo getEthCall($_REQUEST['ethCall'],$gethRPC);
}else if(isset($_REQUEST['ethCallAt']) && isset($_REQUEST['blockNb'])){
header('Content-Type: application/json');
echo getEthCallAt($_REQUEST['ethCallAt'],$_REQUEST['blockNb'],$gethRPC);
} else if(isset($_REQUEST['hash'])){
header('Content-Type: application/json');
echo getTransaction($_REQUEST['hash'],$gethRPC);
} else {
header('Content-Type: application/json');
echo blockNumber($gethRPC);
}
function blockNumber($gethRPC){
$data = getDefaultResponse();
try {
$ret = getRPCResponse($gethRPC->eth_blockNumber());
$data['data'] = $ret;
$block=hexdec($ret);
}
catch (exception $e) {
$data['error'] = true;
$data['msg'] = $e->getMessage();
}
return $block;
}
function getEstimatedGas($txobj, $gethRPC){
$data = getDefaultResponse();
try {
$data['data'] = getRPCResponse($gethRPC->eth_estimateGas($txobj));
}
catch (exception $e) {
$data['error'] = true;
$data['msg'] = $e->getMessage();
}
return json_encode($data);
}
function getTransaction($hash, $gethRPC){
$data = getDefaultResponse();
try {
$ret = getRPCResponse($gethRPC->eth_getTransactionByHash($hash),
"pending");
$cluster = Cassandra::cluster('127.0.0.1') ->withCredentials("transactions_ro", "Public_transactions")
->build();
$keyspace = 'comchain';
$session = $cluster->connect($keyspace);
$query = "SELECT * FROM testtransactions WHERE hash = ?";
$options = array('arguments' => array($hash));
foreach ($session->execute(new Cassandra\SimpleStatement($query), $options) as $row) {
if ($row['direction']==1){
if ( $row['status']==0 || !isset($arr)) {
$arr = $row;
$arr['addr_from'] = $arr['add1'];
$arr['addr_to'] = $arr['add2'];
$arr['time'] = $arr['time']->value();
}
}
}
$arr['transaction'] = $ret;
$ret = json_encode($arr);
$data = $ret;
}
catch (exception $e) {
$data['error'] = true;
$data['msg'] = $e->getMessage();
}
return json_encode($data);
}
function getEthCall($txobj, $gethRPC){
$data = getDefaultResponse();
try {
$data['data'] = getRPCResponse($gethRPC->eth_call($txobj,
"pending"));
}
catch (exception $e) {
$data['error'] = true;
$data['msg'] = $e->getMessage();
}
return json_encode($data);
}
function getEthCallAt($txobj, $blockNb, $gethRPC){
$data = getDefaultResponse();
try {
$data['data'] = getRPCResponse($gethRPC->eth_call($txobj,
$blockNb));
}
catch (exception $e) {
$data['error'] = true;
$data['msg'] = $e->getMessage();
}
return json_encode($data);
}
function getTransactionData($addr, $gethRPC){
$data = getDefaultResponse();
try {
$addr = formatAddress($addr);
$balance = getRPCResponse($gethRPC->eth_getBalance($addr,
"pending"));
$nonce = getRPCResponse($gethRPC->eth_getTransactionCount($addr,
"pending"));
$gasprice = getRPCResponse($gethRPC->eth_gasPrice());
$balance=bchexdec($balance);
$tarr['address'] = $addr;
$tarr['balance'] = $balance;
$tarr['nonce'] = $nonce;
$tarr['gasprice'] = $gasprice;
$data['data'] = $tarr;
}
catch (exception $e) {
$data['error'] = true;
$data['msg'] = $e->getMessage();
}
return json_encode($data);
}
function getEthBalance($addr, $gethRPC)
{
$data = getDefaultResponse();
try {
$addr = formatAddress($addr);
$balancehex = getRPCResponse($gethRPC->eth_getBalance($addr,
"pending"));
$balance=bchexdec($balancehex);
$tarr['address'] = $addr;
$tarr['balance'] = $balance;
$tarr['balancehex'] = $balancehex;
$data['data'] = $tarr;
}
catch (exception $e) {
$data['error'] = true;
$data['msg'] = $e->getMessage();
}
return json_encode($data);
}
function getRPCResponse($result){
if(isset($result['result'])){
return $result['result'];
} else {
throw new Exception($result['error']['message']);
}
}
// Lookup into the DB for a valid shop from the REQUEST parameters
function validateShop($shop_id, $server_name){
$cluster = Cassandra::cluster('127.0.0.1') ->withCredentials("transactions_ro", "Public_transactions")->build();
$keyspace = 'comchain';
$session = $cluster->connect($keyspace);
$query = "SELECT webhook_url, server_name FROM sellers WHERE store_id = ? ";
$options = array('arguments' => array($shop_id));
foreach ($session->execute(new Cassandra\SimpleStatement($query), $options) as $row) {
if ($row['server_name']==$server_name){
return $row['webhook_url'];
}
}
return "";
}
function validateShopData() {
$shop_id=$_REQUEST['shopId'];
$shop_ref=$_REQUEST['txId'];
$server_name=$_REQUEST['serverName'];
if (isset($shop_id) && isset($server_name) && isset($shop_ref)) {
return validateShop( $shop_id, $server_name);
} else {
return "";
}
}
function storeAdditionalData($is_valid_shop, $transaction_ash, $web_hook_status) {
$shop_id=$_REQUEST['shopId'];
$shop_ref=$_REQUEST['txId'];
$delegate=$_REQUEST['delegate'];
$memo_from=$_REQUEST['memo_from'];
$memo_to=$_REQUEST['memo_to'];
$parent_hash=$_REQUEST['parent_hash'];
$do_insert=false;
$fields =array();
$val =array();
$fields['wh_status'] = $web_hook_status;
$val[]='?';
if ($is_valid_shop) {
$fields['store_id'] = $shop_id;
$fields['store_ref'] = $shop_ref;
$val[]='?';
$val[]='?';
}
if (isset($delegate)) {
$fields['delegate'] = $delegate;
$val[]='?';
}
if (isset($parent_hash)) {
$fields['linked_hash'] = $parent_hash;
$val[]='?';
}
if (isset($memo_from) && $memo_from!="") {
$fields['message_from'] = $memo_from;
$val[]='?';
}
if (isset($memo_to) && $memo_to!="") {
$fields['message_to'] = $memo_to;
$val[]='?';
}
$fields['hash'] = $transaction_ash;
$val[]='?';
// build the query
$query = "INSERT INTO webshop_transactions (".join(', ',array_keys($fields));
$query = $query.',receivedAt) VALUES ('.join(', ',$val).",".time().")";
$cluster = Cassandra::cluster('127.0.0.1') ->withCredentials("webhook_rw", "Private_access_transactions")->build();
$keyspace = 'comchain';
$session = $cluster->connect($keyspace);
$session->execute(new Cassandra\SimpleStatement($query), array('arguments' => $fields));
}
function storeTransaction($is_valid_shop, $transaction_ash, $web_hook_status, $amount, $from, $to, $trans_type, $currency) {
$shop_id=$_REQUEST['shopId'];
$shop_ref=$_REQUEST['txId'];
$delegate=$_REQUEST['delegate'];
$parent_hash=$_REQUEST['parent_hash'];
$memo_from=$_REQUEST['memo_from'];
$memo_to=$_REQUEST['memo_to'];
$do_insert=false;
$fields =array();
$val =array();
$fields['add1'] = $from;
$val[]='?';
$fields['add2'] = $to;
$val[]='?';
$fields['direction'] = 1;
$val[]='?';
$fields['status'] = 1;
$val[]='?';
$fields['hash'] = $transaction_ash;
$val[]='?';
$fields['sent'] = $amount;
$val[]='?';
$fields['recieved'] = $amount;
$val[]='?';
$fields['tax'] = 0;
$val[]='?';
$fields['type'] = $trans_type;
$val[]='?';
$fields['wh_status'] = $web_hook_status;
$val[]='?';
if ($is_valid_shop) {
$fields['store_id'] = $shop_id;
$fields['store_ref'] = $shop_ref;
$val[]='?';
$val[]='?';
}
if (isset($delegate)) {
$fields['delegate'] = $delegate;
$val[]='?';
}
if (isset($parent_hash)) {
$fields['linked_hash'] = $parent_hash;
$val[]='?';
}
if (isset($memo_from) && $memo_from!="") {
$fields['message_from'] = $memo_from;
$val[]='?';
}
if (isset($memo_to) && $memo_to!="") {
$fields['message_to'] = $memo_to;
$val[]='?';
}
if (isset($currency) && $currency!="") {
$fields['currency'] = $currency;
$val[]='?';
}
/* incompatibiliy between the number of bytes=> set in the text
$fields['time'] = ''.time();
$val[]='?';
*/
// build the query
$query = "INSERT INTO testtransactions (".join(', ',array_keys($fields));
$query = $query.',time,receivedAt) VALUES ('.join(', ',$val).','.time().','.time().')';
$keyspace = 'comchain';
// for pledge only the other direction is inserted
if ($trans_type!='Pledge') {
$cluster = Cassandra::cluster('127.0.0.1') ->withCredentials("transactions_rw", "Private_access_transactions")->build();
$session1 = $cluster->connect($keyspace);
$session1->execute(new Cassandra\SimpleStatement($query), array('arguments' => $fields));
}
$cluster2 = Cassandra::cluster('127.0.0.1') ->withCredentials("transactions_rw", "Private_access_transactions")->build();
$session2 = $cluster2->connect($keyspace);
$fields['add1'] = $to;
$fields['add2'] = $from;
$fields['direction'] = 2;
$session2->execute(new Cassandra\SimpleStatement($query), array('arguments' => $fields));
}
function getContract1($contract) {
$contract = '0x'.$contract;
// legacy cases: Lemanopolis, Monnaie-Leman
if (strtolower($contract)==strtolower("0xE616BE14B489c33c8CC3D5974A5DeAad6E4A33c8")){
$contract="0x85291865Ac4b11b086EAf901E6116eba014244cE";
} else if (strtolower($contract)==strtolower("0xF765D6608c9B4640BB0af860771793c41C4b8eF8")){
$contract="0xB86C066396A6f21F17301E9acfec2a0Fc5c76116";
}
return $contract;
}
function in_my_array($needle, $array){
foreach ($array as $elem) {
if ($needle==$elem){
return true;
}
}
return false;
}
function sendRawTransaction($rawtx,$gethRPC){
$data = getDefaultResponse();
// Direct From On Behalf Accept Request
$transfert_NA_functions = ['a5f7c148','58258353','1b6b1ee5','132019f4'];
$transfert_CM_functions = ['60ca9c4c','2ef9ade2','74c421fe','1415707c'];
$pledge_function = '6c343eef';
$transfert_functs = array_merge($transfert_NA_functions,$transfert_CM_functions);
$lock_error = 'Account_Locked_Error';
$amount_error = 'Incompatible_Amount';
$restricted_transaction_type_error = 'Incompatible_Account_Types_Error';
$currency = '';
try {
// length input 2 vs 3 x64
$is_f2 = false;
$is_f3 = false;
if (strlen($rawtx)>316 && substr($rawtx,-274,4) == 'b844'){
$is_f2 = true;
} else if (strlen($rawtx)>380 && substr($rawtx,-338,4) == 'b864'){
$is_f3 = true;
}
$need_pending = false;
$amount = 0;
$trans_type = '';
$from_add = '';
$to_add = '';
$dbg ='';
if ($is_f3){
$tr_info = substr($rawtx,-380,246);
//get the type of transfert
$funct_address = strtolower(substr($tr_info,46,8));
// get the sender
$sender = TransactionEcRecover($rawtx)[0];
// get the contract for the balances
$contract = getContract1(substr($tr_info,0,40));
$contract2 = '0x'.substr($tr_info,0,40);
$currency = getCurrency($contract);
if ($funct_address==$transfert_NA_functions[2] || $funct_address==$transfert_CM_functions[2]) {
// Transfert On Behalf
// get the account debited
$from_add = '0x'.substr($tr_info,78,40);
// get the dest.
$to_add = '0x'.substr($tr_info,142,40);
// get the amount
$amount = hexdec(substr($tr_info,-64));
if (!checkPreventTransactionRule($from_add, $to_add, $contract)) {
$data["data"] = "TransactionBetweenForbidenAccountTypes";
throw new Exception($restricted_transaction_type_error);
}
// get the infos
$status = getAccountStatus(array($from_add, $to_add), $contract);
$from_status = $status[$from_add];
$to_status = $status[$to_add];
$from_Nt_bal = getNTBalance($from_add, $contract);
$from_Cm_bal = getCMBalance($from_add, $contract);
$from_Cm_lim_m = getCMLimitM($from_add, $contract);
$to_Cm_bal = getCMBalance($to_add, $contract);
$to_Cm_lim_p = getCMLimitP($to_add, $contract);
if ($from_status==1 && $to_status==1){
// Check delegation exists and is above amount
$delegation_amount = getNumberInMap($from_add, $sender, $contract2, '0x046d3307'); // Address order OK
if ($amount>$delegation_amount) {
$data["data"] = "InsufficientDelegatedAmount";
throw new Exception($amount_error);
}
// Check transaction is possible
if ($funct_address==$transfert_NA_functions[2]) { // Nanti
if ($amount>$from_Nt_bal) {
$data["data"] = "InsufficientNantBalance";
throw new Exception($amount_error);
}
$trans_type = 'Transfer';
} else if ($funct_address==$transfert_CM_functions[2]) { // Mutual Credit
// dest can accept amount
if ($to_Cm_bal + $amount >= $to_Cm_lim_p) {
$data["data"] = "ReceiverWouldHitCMLimitMax";
throw new Exception($amount_error);
}
// sender has credit
if ($from_Cm_bal - $amount <= $from_Cm_lim_m) {
$data["data"] = "SenderWouldHitCMLimitMin";
throw new Exception($amount_error);
}
$trans_type = 'TransferCredit';
} else {
$data["data"] = "UnexpectedTransferAddress";
throw new Exception($amount_error);
}
$need_pending = true;
} else {
throw new Exception($lock_error);
}
}
} else if ($is_f2){
$tr_info = substr($rawtx,-316,182);
//get the type of transfert
$funct_address = strtolower(substr($tr_info,46,8));
// get the sender
$sender = TransactionEcRecover($rawtx)[0];
// get the contract for the balances
$contract = getContract1(substr($tr_info,0,40));
$contract2 = '0x'.substr($tr_info,0,40);
$currency = getCurrency($contract);
// get the dest
$dest = '0x'.substr($tr_info,78,40);
// get the amount
$amount = hexdec(substr($tr_info,-64));
if (in_my_array($funct_address, $transfert_functs)) {
$status = getAccountStatus(array($sender, $dest), $contract);
$from_status = $status[$sender];
$to_status = $status[$dest];
if ($from_status==1 && $to_status==1) {
if ($funct_address==$transfert_NA_functions[0] ||
$funct_address==$transfert_CM_functions[0] ||
$funct_address==$transfert_NA_functions[3] ||
$funct_address==$transfert_CM_functions[3]) {
// Direct Transfert and Accept reqest
$from_add = $sender;
$to_add = $dest;
if (!checkPreventTransactionRule($from_add, $to_add, $contract)) {
$data["data"] = "TransactionBetweenForbidenAccountTypes";
throw new Exception($restricted_transaction_type_error);
}
// get the infos
$from_Nt_bal = getNTBalance($sender, $contract);
$from_Cm_bal = getCMBalance($sender, $contract);
$from_Cm_lim_m = getCMLimitM($sender, $contract);
$to_Cm_bal = getCMBalance($dest, $contract);
$to_Cm_lim_p = getCMLimitP($dest, $contract);
// Check request exists and amount is not bigger than expected
if ($funct_address==$transfert_NA_functions[3] || $funct_address==$transfert_CM_functions[3]){
$request_amount = getNumberInMap( $sender, $dest, $contract2, '0x3537d3fa'); //ok address order
if ($amount > $request_amount) {
$data["data"] = "AmountBiggerThanRequested";
throw new Exception($amount_error);
}
}
// Check transaction is possible
if ($funct_address==$transfert_NA_functions[0] || $funct_address==$transfert_NA_functions[3]) { // Nanti
if ($amount > $from_Nt_bal) {
$data["data"] = "InsufficientNantBalance";
throw new Exception($amount_error);
}
$trans_type = 'Transfer';
} else if ($funct_address==$transfert_CM_functions[0] || $funct_address==$transfert_CM_functions[3]) { // Mutual Credit
// dest can accept amount
if ($to_Cm_bal + $amount > $to_Cm_lim_p) {
$data["data"] = "ReceiverWouldHitCMLimitMax";
throw new Exception($amount_error);
}
// sender has credit
if ($from_Cm_bal - $amount < $from_Cm_lim_m) {
$data["data"] = "SenderWouldHitCMLimitMin";
throw new Exception($amount_error);
}
$trans_type = 'TransferCredit';
} else {
$data["data"] = "UnexpectedTransferAddress";
throw new Exception($amount_error);
}
$need_pending = true;
} else if ($funct_address==$transfert_NA_functions[1] || $funct_address==$transfert_CM_functions[1]) {
// Transfert from
$requestor = $sender;
$requested = $dest;
$from_add = $dest;
$to_add = $sender;
if (!checkPreventTransactionRule($from_add, $to_add, $contract)) {
$data["data"] = "TransactionBetweenForbidenAccountTypes";
throw new Exception($restricted_transaction_type_error);
}
$from_Nt_bal = getNTBalance($requested, $contract);
$from_Cm_bal = getCMBalance($requested, $contract);
$from_Cm_lim_m = getCMLimitM($requested, $contract);
$to_Cm_bal = getCMBalance($requestor, $contract);
$to_Cm_lim_p = getCMLimitP($requestor, $contract);
$check_passed = true;
// check autorisation exists and is above amount
$allowance_amount = getNumberInMap($requested, $requestor, $contract2, '0xdd62ed3e'); //address order ok
$check_passed = $allowance_amount>=$amount;
// Check transaction is possible
if ($funct_address==$transfert_NA_functions[1]) { // Nanti
$check_passed &= $from_Nt_bal>=$amount;
$trans_type = 'Transfer';
} else if ($funct_address==$transfert_CM_functions[1]) { // Mutual Credit
// dest can accept amount
$check_passed &= $to_Cm_bal + $amount <= $to_Cm_lim_p;
// sender has credit
$check_passed &=$from_Cm_bal-$amount >= $from_Cm_lim_m;
$trans_type = 'TransferCredit';
} else {
$check_passed = false;
}
$need_pending = $check_passed;
}
} else {
throw new Exception($lock_error);
}
} else if ($pledge_function == $funct_address) {
// We have a pledge:
$trans_type = 'Pledge';
$from_add = 'Admin';
$to_add = $dest;
$acctype = getAccType($sender, $contract);
$status = getAccountStatus(array($sender), $contract);
$curr_stat= $status[$sender];
$need_pending = ($acctype==2 || $acctype==3) && $curr_stat==1;
}
}
$data['data'] = getRPCResponse($gethRPC->eth_sendRawTransaction($rawtx));
$shop_url = validateShopData();
$wh_status = 0;
if (strlen($shop_url)>0 && $amount > 0) {
$wh_status = 1;
}
if ($need_pending && strlen($shop_url)>0 && $amount > 0) {
$message = createWebhookMessage($data['data'], $_REQUEST['serverName'],
$_REQUEST['shopId'], $_REQUEST['txId'],
$trans_type, $from_add, $to_add, $amount);
$res = sendWebhook($shop_url, $message);
if ($res) {
$wh_status = 3;
} else {
$wh_status = 2;
}
}
// Storing the memos, shop and/or delegate
storeAdditionalData(strlen($shop_url)>0, $data['data'], $wh_status);
if ($need_pending) {
// adding pending transaction
storeTransaction(strlen($shop_url)>0, $data['data'], $wh_status, $amount, $from_add, $to_add, $trans_type, $currency);
}
} catch (exception $e) {
$data['error'] = true;
$data['msg'] = $e->getMessage();
}
/* $data['dbg']= $dbg; */
return json_encode($data);
}
function formatAddress($addr){
if (substr($addr, 0, 2) == "0x")
return $addr;
else
return "0x".$addr;
}
function getDefaultResponse(){
$data['error'] = false;
$data['msg'] = "";
$data['data'] = "";
return $data;
}
function bchexdec($hex)
{
$dec = 0;
$len = strlen($hex);
for ($i = 1; $i <= $len; $i++) {
$dec = bcadd($dec, bcmul(strval(hexdec($hex[$i - 1])), bcpow('16', strval($len - $i))));
}
return $dec;
}
?>