whitelist + ratelimit dealfilter

gistfile1.txt

#!/usr/bin/env php
<?php
const RATE_LIMIT = 7200; // in seconds
const JSON_FILE_PATH = "/home/dev/dealfilter.json";

function exitDealReject($reason) {
        echo $reason."\n";
        exit(1);
}

function exitDealAccept() {
        exit(0);
}

function saveJsonToFile($data){
    $jsonstring = json_encode($data);
    file_put_contents(JSON_FILE_PATH, $jsonstring);
}

$address_allowlist = [
        // Estuary
        'f3vnq2cmwig3qjisnx5hobxvsd4drn4f54xfxnv4tciw6vnjdsf5xipgafreprh5riwmgtcirpcdmi3urbg36a',
        // Dealbot
        'f1wdxdpqh3hirrhp353i4o6ld7bsw6evh3v7i5jtq',
        // Bidbot
        'f144zep4gitj73rrujd3jw6iprljicx6vl4wbeavi',
        // 3000rice
        // 'f3spci2tzjzhedgvxsoxg4hprrkyszdce5dacaxg4ndkvpshpuma2uf6c4fmk2lvvrobnz5bvr6j5hfeccpupq'
];

$address_nolimitlist = [
        // 3000rice
        // 'f3spci2tzjzhedgvxsoxg4hprrkyszdce5dacaxg4ndkvpshpuma2uf6c4fmk2lvvrobnz5bvr6j5hfeccpupq'
];

$stdin = fopen('php://stdin', 'r');
stream_set_blocking($stdin, FALSE);

$json_input = stream_get_contents($stdin);
if (!$json_input) {
        // No input
        exitDealReject("001 Miner can't accept deal right now, please try again later.");
}

$input = json_decode($json_input);
if (!$input) {
        // JSON failed to parse
        exitDealReject("002 Miner can't accept deal right now, please try again later.");
}

// Reject deals if they are on the allowlist
if (!in_array($input->Proposal->Client, $address_allowlist)) {
        exitDealReject("003 Please contact to whitelist: ".$input->Proposal->Client);
}

if (!in_array($input->Proposal->Client, $address_nolimitlist)) {
    // Check last time got the deal
    $jsonstring = file_get_contents(JSON_FILE_PATH);
    $ts_obj = json_decode($jsonstring, true);

    $last_ts = $ts_obj[$input->Proposal->Client] | 0; 
    $current_ts = microtime(true); 

    $diff = $current_ts - $last_ts; 
    if($diff <= RATE_LIMIT && !in_array($input->Proposal->Client, $address_nolimitlist)) {
            saveJsonToFile($ts_obj);
            exitDealReject("004 Rate limit reached. Last deal was received $diff seconds ago.");
    } else {
            $ts_obj[$input->Proposal->Client] = $current_ts;
    }

    saveJsonToFile($ts_obj);
}

exitDealAccept();