113 lines
3.4 KiB
PHP
113 lines
3.4 KiB
PHP
<?php
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function artembc_createbc($filename, $namebc, $data=[]) {
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$temp=[[
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"id"=>0,
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"time"=>time(),
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"data"=>$data,
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"transaction"=>[],
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"prevhash"=>"ZeroBlock"
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]];
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$temp[0]["data"]["namebc"]=$namebc;
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$temp[0]["hash"]=hash("sha256", json_encode($temp[0]));
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return artembc_save($filename, $temp);
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}
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function artembc_addtransaction($filename, &$transaction, $data) {
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$bc=artembc_load($filename);
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$temp=count($transaction);
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$transaction[]=[
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"id"=>count($transaction),
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"idblock"=>count($bc),
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"time"=>time(),
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"data"=>$data
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];
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$transaction[$temp]["hash"]=hash("sha256", json_encode($transaction[$temp]));
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return true;
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}
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function artembc_initblock($filename, &$transaction, $data=[]) {
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$bc=artembc_load($filename);
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$temp=count($bc);
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for($i = 0, $size = count($transaction), $correct=true; $i < $size; ++$i) {
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$block=$transaction[$i];
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$hash=hash("sha256", json_encode([
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"id"=>$block["id"],
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"idblock"=>$block["idblock"],
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"time"=>$block["time"],
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"data"=>$block["data"]
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]));
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if ($block["idblock"] != $temp and $hash != $block["hash"]) {
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$correct=false;
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break;
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};
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};
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if ($correct) {
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$bc[]=[
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"id"=>$temp,
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"time"=>time(),
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"data"=>$data,
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"transaction"=>$transaction,
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"prevhash"=>$bc[$temp-1]["hash"]
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];
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$bc[$temp]["hash"]=hash("sha256", json_encode($bc[$temp]));
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artembc_save($filename, $bc);
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$transaction=[];
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};
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return $correct;
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}
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function artembc_checkbc($filename) {
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$bc=artembc_load($filename);
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$temp=count($bc);
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$correct=true;
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$correct2=true;
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foreach ($bc as $i => $transaction) {
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foreach ($transaction["transaction"] as $i1 => $v1) {
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if (count($transaction["transaction"])>0){
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$tmp=[
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"id"=>$v1["id"],
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"idblock"=>$v1["idblock"],
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"time"=>$v1["time"],
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"data"=>$v1["data"]
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];
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$hash=hash("sha256", json_encode($tmp));
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if ($v1["idblock"] != $i or $v1["id"] != $i1 or $hash != $v1["hash"]) {
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global $correct;
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$correct=false;
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break;
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};
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};
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};
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unset($i1, $v1);
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$hash=hash("sha256", json_encode([
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"id"=>$transaction["id"],
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"time"=>$transaction["time"],
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"data"=>$transaction["data"],
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"transaction"=>$transaction["transaction"],
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"prevhash"=>$transaction["prevhash"]
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]));
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if ($hash != $transaction["hash"] or ($i != 0 and $transaction["prevhash"] != $bc[$i-1]["hash"])) {
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global $correct2;
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$correct2 = false;
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break;
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};
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};
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unset($i, $v);
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return $correct and $correct2;
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}
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function artembc_getblock($filename, $id) {
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$temp=artembc_load($filename);
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return $temp[$id];
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}
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function artembc_getbc($filename) {
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return artembc_load($filename);
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}
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function artembc_getnamebc($filename) {
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$bc=artembc_load($filename);
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return $bc[0]["data"]["namebc"];
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}
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function artembc_save($filename, $data) {
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return file_put_contents($filename, json_encode($data));
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}
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function artembc_load($filename) {
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return json_decode(file_get_contents($filename), true);
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}
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?>
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