ZTE MC888 network reconnect script (with optional auto-reboot in case of Internet failure)

zte_mc888_reconnect.php

<?php

$ip = '192.168.0.1'; // MODEM IP HERE
$password = 'admin'; // YOUR PASSWORD HERE
$userAgent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36';
$logFile = 'zte_reconnect.log';
$cookieFile = tempnam(sys_get_temp_dir(), 'zte_full_reset_');

function logMessage($message, $logFile) {
    $timestamp = date('Y-m-d H:i:s');
    $formattedMessage = "[$timestamp] $message\n";
    echo $formattedMessage;
    file_put_contents($logFile, $formattedMessage, FILE_APPEND);
}

function pingHost($host) {
    $command = "ping -c 1 -W 2 " . escapeshellarg($host) . " > /dev/null 2>&1";
    exec($command, $output, $result);
    return ($result === 0);
}

function makeRequest($url, $isPost = false, $postData = [], $cookieFile, $userAgent, $ip) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_USERAGENT, $userAgent);
    curl_setopt($ch, CURLOPT_COOKIEJAR, $cookieFile);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $cookieFile);
    curl_setopt($ch, CURLOPT_REFERER, "http://$ip/index.html");
    curl_setopt($ch, CURLOPT_TIMEOUT, 15);
    
    if ($isPost) {
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData));
    }

    $response = curl_exec($ch);
    curl_close($ch);
    return $response;
}

function getFreshAD($ip, $version, $cookieFile, $userAgent) {
    $rdRes = json_decode(makeRequest("http://$ip/goform/goform_get_cmd_process?isTest=false&cmd=RD", false, [], $cookieFile, $userAgent, $ip), true);
    $rd = $rdRes['RD'] ?? '';
    if (!$rd) return null;
    $a = strtoupper(hash('sha256', $version));
    return strtoupper(hash('sha256', $a . $rd));
}

// check modem
if (!pingHost($ip)) {
    logMessage("Error: Modem ($ip) is not reachable.", $logFile);
    exit(1);
}

// init
logMessage("Radio module reconnection process started...", $logFile);

$ldRes = json_decode(makeRequest("http://$ip/goform/goform_get_cmd_process?isTest=false&cmd=LD", false, [], $cookieFile, $userAgent, $ip), true);
$ld = strtoupper($ldRes['LD'] ?? '');
$verRes = json_decode(makeRequest("http://$ip/goform/goform_get_cmd_process?isTest=false&cmd=wa_inner_version", false, [], $cookieFile, $userAgent, $ip), true);
$version = $verRes['wa_inner_version'] ?? '';

if (!$ld || !$version) {
    logMessage("Error: Could not get LD and/or Version.", $logFile);
    exit(1);
}

// login
$ad = getFreshAD($ip, $version, $cookieFile, $userAgent);
$hashPassword = strtoupper(hash('sha256', $password));
$ztePass = strtoupper(hash('sha256', $hashPassword . $ld));

$loginResRaw = makeRequest("http://$ip/goform/goform_set_cmd_process", true, [
    'isTest' => 'false',
    'goformId' => 'LOGIN',
    'password' => $ztePass,
    'AD' => $ad
], $cookieFile, $userAgent, $ip);

$loginData = json_decode($loginResRaw, true);
if (!isset($loginData['result']) || ($loginData['result'] !== '0' && $loginData['result'] !== 'success')) {
    logMessage("ERROR: Login failed.", $logFile);
    exit(1);
}
logMessage("Login success.", $logFile);

// disconnect ppp data connection
logMessage("Disconnecting network...", $logFile);
$ad = getFreshAD($ip, $version, $cookieFile, $userAgent);
makeRequest("http://$ip/goform/goform_set_cmd_process", true, [
    'isTest' => 'false',
    'goformId' => 'DISCONNECT_NETWORK',
    'AD' => $ad
], $cookieFile, $userAgent, $ip);
sleep(3);

// set to 3g only
logMessage("Setting to 3G Only...", $logFile);
$ad = getFreshAD($ip, $version, $cookieFile, $userAgent);
makeRequest("http://$ip/goform/goform_set_cmd_process", true, [
    'isTest' => 'false',
    'goformId' => 'SET_BEARER_PREFERENCE',
    'BearerPreference' => 'Only_WCDMA',
    'AD' => $ad
], $cookieFile, $userAgent, $ip);
sleep(5);

// set back to 5g auto
logMessage("Setting back to 3G/4G/5G Auto...", $logFile);
$ad = getFreshAD($ip, $version, $cookieFile, $userAgent);
makeRequest("http://$ip/goform/goform_set_cmd_process", true, [
    'isTest' => 'false',
    'goformId' => 'SET_BEARER_PREFERENCE',
    'BearerPreference' => 'WL_AND_5G',
    'AD' => $ad
], $cookieFile, $userAgent, $ip);
sleep(15);

// reconnect ppp data
logMessage("Connecting to network...", $logFile);
$ad = getFreshAD($ip, $version, $cookieFile, $userAgent);
makeRequest("http://$ip/goform/goform_set_cmd_process", true, [
    'isTest' => 'false',
    'goformId' => 'CONNECT_NETWORK',
    'AD' => $ad
], $cookieFile, $userAgent, $ip);

logMessage("Waiting 60s for network to connect...", $logFile);
sleep(60);

// check and reboot if needed
$ping1 = pingHost('1.1.1.1');
$ping2 = pingHost('8.8.8.8');

if ($ping1 || $ping2) {
    logMessage("Check successful. Internet is available.", $logFile);
} else {
    logMessage("INTERNET DOWN: Performing modem reboot...", $logFile);
    $ad = getFreshAD($ip, $version, $cookieFile, $userAgent);
    makeRequest("http://$ip/goform/goform_set_cmd_process", true, [
        'isTest' => 'false',
        'goformId' => 'REBOOT_DEVICE',
        'AD' => $ad
    ], $cookieFile, $userAgent, $ip);
    logMessage("Reboot command sent. ", $logFile);
}

logMessage("Process finished.", $logFile);

if (file_exists($cookieFile)) unlink($cookieFile);