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Sihlonza ama-bot "amabi" angaba khona futhi siwavimbe nge-IP

Sihlonza ama-bot "amabi" angaba khona futhi siwavimbe nge-IP

Usuku oluhle! Esihlokweni ngizokutshela ukuthi abasebenzisi bokusingathwa okujwayelekile bangakwazi kanjani ukubamba amakheli e-IP akhiqiza umthwalo oweqile kusayithi bese bewavimbela ngokusebenzisa amathuluzi wokubamba, kuzoba "okuncane" kwekhodi ye-php, izithombe-skrini ezimbalwa.

Idatha yokokufaka:

  1. Iwebhusayithi idalwe ku-CMS WordPress
  2. I-Hosting Beget (lesi akusona isikhangiso, kodwa izithombe-skrini zephaneli yomqondisi zizovela kulo mhlinzeki othile osingatha)
  3. Isayithi le-WordPress yethulwa endaweni ethile ekuqaleni kuka-2000 futhi inenani elikhulu lama-athikili nezinto zokwakha
  4. Inguqulo ye-PHP 7.2
  5. I-WP inenguqulo yakamuva
  6. Isikhathi esithile manje, isayithi laqala ukukhiqiza umthwalo ophezulu ku-MySQL ngokusho kwedatha yokubamba. Nsuku zonke leli nani lidlula u-120% wenkambiso ye-akhawunti ngayinye
  7. Ngokusho kweYandex. Indawo ye-Metrica ivakashelwa abantu abayi-100-200 ngosuku

Okokuqala, lokhu kwenziwa:

  1. Amathebula esizindalwazi asuliwe kudoti onqwabelene
  2. Ama-plugin angadingekile akhutshaziwe, izingxenye zekhodi ephelelwe yisikhathi zisusiwe

Ngesikhathi esifanayo, ngingathanda ukukudonsa ukunaka kwakho eqinisweni lokuthi izinketho zokulondoloza isikhashana (ama-plugin we-caching) zizanyiwe, ukubhekwa kwenziwa - kodwa umthwalo we-120% ovela kusayithi elilodwa wawungashintshiwe futhi ungakhula kuphela.

Ukuthi umthwalo olinganiselwe kusizindalwazi sokusingatha ububukeka kanjani

Sihlonza ama-bot "amabi" angaba khona futhi siwavimbe nge-IP
Phezulu kunesiza okukhulunywa ngaso, ngezansi nje kukhona amanye amasayithi anama-cms afanayo futhi acishe abe nethrafikhi efanayo, kodwa adala umthwalo omncane.

Анализ

  • Imizamo eminingi yenziwe ngezinketho zokulondolozwa kwedatha, ukubonwa kwenziwa emasontweni ambalwa (ngenhlanhla, ngalesi sikhathi ukusingatha akakaze angibhalele ukuthi ngimubi kakhulu futhi ngizonqanyulwa)
  • Kube nokuhlaziywa nokuseshwa kwemibuzo ehamba kancane, kwase kuthi ukwakheka kwesizindalwazi kanye nohlobo lwethebula kwashintshwa kancane
  • Ukuze sihlaziye, sisebenzise ikakhulukazi ama-AWStats akhelwe ngaphakathi (njengendlela, asize ukubala ikheli le-IP elibi kakhulu ngokusekelwe kumthamo wethrafikhi.
  • Imethrikhi - imethrikhi inikeza ulwazi olumayelana nabantu kuphela, hhayi mayelana nama-bots
  • Kube nemizamo yokusebenzisa ama-plugin e-WP akwazi ukuhlunga futhi avimbe izivakashi ngisho ngezwe lendawo kanye nezinhlanganisela ezihlukahlukene.
  • Indlela eqinile yaba ukuvala isayithi usuku lonke ngenothi elithi “Siyalungiswa” - lokhu kwenziwe kusetshenziswa i-plugin edumile. Kulesi simo, silindele ukuthi umthwalo wehle, kodwa hhayi kumanani we-zero, njengoba umbono we-WP usekelwe ezingwegweni futhi ama-plugin aqala umsebenzi wawo lapho "i-hook" ivela, futhi ngaphambi kokuba "i-hook" ivele, izicelo ku-database zingakwazi. esenziwe kakade

I-Idea

  1. Bala amakheli e-IP enza izicelo eziningi ngesikhathi esifushane.
  2. Rekhoda inani lamahithi kusayithi
  3. Vimba ukufinyelela kusayithi ngokusekelwe enanini lamahithi
  4. Vimba usebenzisa ukufakwa kokuthi "Yenqaba kusuka" kufayela le-.htaccess
  5. Angizange ngicabangele ezinye izinketho, njengama-iptables nemithetho ye-Nginx, ngoba ngibhala mayelana nokubamba

Umbono usuvele, ngakho udinga ukuqaliswa, njengoba ngaphandle kwalokhu...

  • Ukudala amathebula ukuze kuqoqwe idatha 
    CREATE TABLE `wp_visiters_bot` (
	`id` INT(11) NOT NULL AUTO_INCREMENT,
	`ip` VARCHAR(300) NULL DEFAULT NULL,
	`browser` VARCHAR(500) NULL DEFAULT NULL,
	`cnt` INT(11) NULL DEFAULT NULL,
	`request` TEXT NULL,
	`input` TEXT NULL,
	`data_update` DATETIME NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
	PRIMARY KEY (`id`),
	UNIQUE INDEX `ip` (`ip`)
)
COMMENT='Кандидаты для блокировки'
COLLATE='utf8_general_ci'
ENGINE=InnoDB
AUTO_INCREMENT=1;


    CREATE TABLE `wp_visiters_bot_blocked` (
	`id` INT(11) NOT NULL AUTO_INCREMENT,
	`ip` VARCHAR(300) NOT NULL,
	`data_update` DATETIME NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
	PRIMARY KEY (`id`),
	UNIQUE INDEX `ip` (`ip`)
)
COMMENT='Список уже заблокированных'
COLLATE='utf8_general_ci'
ENGINE=InnoDB
AUTO_INCREMENT=59;


    CREATE TABLE `wp_visiters_bot_history` (
	`id` INT(11) NOT NULL AUTO_INCREMENT,
	`ip` VARCHAR(300) NULL DEFAULT NULL,
	`browser` VARCHAR(500) NULL DEFAULT NULL,
	`cnt` INT(11) NULL DEFAULT NULL,
	`data_update` DATETIME NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
	`data_add` DATETIME NULL DEFAULT CURRENT_TIMESTAMP,
	PRIMARY KEY (`id`),
	UNIQUE INDEX `ip` (`ip`)
)
COMMENT='История всех запросов для дебага'
COLLATE='utf8_general_ci'
ENGINE=InnoDB
AUTO_INCREMENT=1;
  • Ake sakhe ifayela lapho sizobeka khona ikhodi. Ikhodi izorekhoda kumathebula ekhandidethi elivimbelayo futhi igcine umlando wokulungisa iphutha.

    Ikhodi yefayela yokurekhoda amakheli e-IP

    <?php

if (!defined('ABSPATH')) {
    return;
}

global $wpdb;

/**
 * Вернёт конкретный IP адрес посетителя
 * @return boolean
 */
function coderun_get_user_ip() {

    $client_ip = '';

    $address_headers = array(
        'HTTP_CLIENT_IP',
        'HTTP_X_FORWARDED_FOR',
        'HTTP_X_FORWARDED',
        'HTTP_X_CLUSTER_CLIENT_IP',
        'HTTP_FORWARDED_FOR',
        'HTTP_FORWARDED',
        'REMOTE_ADDR',
    );

    foreach ($address_headers as $header) {
        if (array_key_exists($header, $_SERVER)) {

            $address_chain = explode(',', $_SERVER[$header]);
            $client_ip = trim($address_chain[0]);

            break;
        }
    }

    if (!$client_ip) {
        return '';
    }


    if ('0.0.0.0' === $client_ip || '::' === $client_ip || $client_ip == 'unknown') {
        return '';
    }

    return $client_ip;
}

$ip = esc_sql(coderun_get_user_ip()); // IP адрес посетителя

if (empty($ip)) {// Нет IP, ну и идите лесом...
    header('Content-type: application/json;');
    die('Big big bolt....');
}

$browser = esc_sql($_SERVER['HTTP_USER_AGENT']); //Данные для анализа браузера

$request = esc_sql(wp_json_encode($_REQUEST)); //Последний запрос который был к сайту

$input = esc_sql(file_get_contents('php://input')); //Тело запроса, если было

$cnt = 1;

//Запрос в основную таблицу с временными кондидатами на блокировку
$query = <<<EOT
    INSERT INTO wp_visiters_bot (`ip`,`browser`,`cnt`,`request`,`input`)
        VALUES  ('{$ip}','{$browser}','{$cnt}','{$request}','$input')
         ON DUPLICATE KEY UPDATE cnt=cnt+1,request=VALUES(request),input=VALUES(input),browser=VALUES(browser)
EOT;

//Запрос для истории
$query2 = <<<EOT
    INSERT INTO wp_visiters_bot_history (`ip`,`browser`,`cnt`)
        VALUES  ('{$ip}','{$browser}','{$cnt}')
         ON DUPLICATE KEY UPDATE cnt=cnt+1,browser=VALUES(browser)
EOT;


$wpdb->query($query);

$wpdb->query($query2);

    Ingqikithi yekhodi ukuthola ikheli le-IP lesivakashi bese ulibhala kuthebula. Uma i-ip isivele ikhona etafuleni, inkambu ye-cnt izokwandiswa (inani lezicelo kusayithi)

  • Manje into esabekayo... Manje bazongishisa ngezenzo zami :)
    Ukurekhoda isicelo ngasinye kusayithi, sixhuma ikhodi yefayela kufayela eliyinhloko le-WordPress - wp-load.php. Yebo, sishintsha ifayela le-kernel futhi ngemva nje kokuba i-global variable $wpdb isivele ikhona

Ngakho-ke, manje singabona ukuthi kaningi kangakanani leli kheli noma lelo kheli le-IP limakwe etafuleni lethu futhi ngenkomishi yekhofi sibheka lapho kanye njalo emizuzwini emi-5 ukuze siqonde isithombe.

Sihlonza ama-bot "amabi" angaba khona futhi siwavimbe nge-IP

Bese mane ukopishe i-IP "eyingozi", vula ifayela elithi .htaccess bese ulifaka ekugcineni kwefayela.

Order allow,deny
Allow from all
# start_auto_deny_list
Deny from 94.242.55.248
# end_auto_deny_list

Yilokho, manje i-94.242.55.248 - ayinakho ukufinyelela kusayithi futhi ayikhiqizi umthwalo ku-database.

Kodwa ngaso sonke isikhathi ukukopisha ngesandla kanje akuwona umsebenzi olungile, futhi ngaphandle kwalokho, ikhodi yayihloselwe ukuzimela.

Ake sengeze ifayela elizosetshenziswa nge-CRON njalo ngemizuzu engama-30:

Ikhodi yefayela iyashintsha .htaccess

<?php

/**
 * Файл автоматического задания блокировок по IP адресу
 * Должен запрашиваться через CRON
 */
if (empty($_REQUEST['key'])) {
    die('Hello');
}

require('wp-load.php');

global $wpdb;

$limit_cnt = 70; //Лимит запросов по которым отбирать

$deny_table = $wpdb->get_results("SELECT * FROM wp_visiters_bot WHERE cnt>{$limit_cnt}");

$new_blocked = [];

$exclude_ip = [
    '87.236.16.70'//адрес хостинга
];

foreach ($deny_table as $result) {

    if (in_array($result->ip, $exclude_ip)) {
        continue;
    }

    $wpdb->insert('wp_visiters_bot_blocked', ['ip' => $result->ip], ['%s']);
}

$deny_table_blocked = $wpdb->get_results("SELECT * FROM wp_visiters_bot_blocked");

foreach ($deny_table_blocked as $blocked) {
    $new_blocked[] = $blocked->ip;
}

//Очистка таблицы
$wpdb->query("DELETE FROM wp_visiters_bot");

//echo '<pre>';print_r($new_blocked);echo '</pre>';

$file = '.htaccess';

$start_searche_tag = 'start_auto_deny_list';

$end_searche_tag = 'end_auto_deny_list';

$handle = @fopen($file, "r");
if ($handle) {

    $replace_string = '';//Тест для вставки в файл .htaccess

    $target_content = false; //Флаг нужного нам участка кода

    while (($buffer = fgets($handle, 4096)) !== false) {

        if (stripos($buffer, 'start_auto_deny_list') !== false) {
            $target_content = true;
            continue;
        }

        if (stripos($buffer, 'end_auto_deny_list') !== false) {
            $target_content = false;

            continue;
        }

        if ($target_content) {
            $replace_string .= $buffer;
        }
    }
    if (!feof($handle)) {
        echo "Ошибка: fgets() неожиданно потерпел неудачуn";
    }
    fclose($handle);
}

//Текущий файл .htaccess
$content = file_get_contents($file);

$content = str_replace($replace_string, '', $content);

//Очищаем все блокировки в файле .htaccess
file_put_contents($file, $content);

//Запись новых блокировок
$str = "# {$start_searche_tag}" . PHP_EOL;

foreach ($new_blocked as $key => $value) {
    $str .= "Deny from {$value}" . PHP_EOL;
}

file_put_contents($file, str_replace("# {$start_searche_tag}", $str, file_get_contents($file)));

Ikhodi yefayela ilula futhi ingeyakudala futhi umqondo wayo oyinhloko ukuthatha amakhandidethi ukuze uvimbele futhi ufake imithetho yokuvimbela kufayela elithi .htaccess phakathi kwamazwana.
# qala_uhlu_lokuphika_ngokuzenzakalela futhi # gcina_uhlu_lokuphika_ngokuzenzakalela

Manje ama-IP "ayingozi" avinjwe ngokwawo, futhi ifayela le-.htaccess libukeka kanjena:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

Order allow,deny
Allow from all

# start_auto_deny_list
Deny from 94.242.55.248
Deny from 207.46.13.122
Deny from 66.249.64.164
Deny from 54.209.162.70
Deny from 40.77.167.86
Deny from 54.146.43.69
Deny from 207.46.13.168
....... ниже другие адреса
# end_auto_deny_list

Njengomphumela, ngemuva kokuthi le khodi iqale ukusebenza, ungabona umphumela kuphaneli yokubamba:

Sihlonza ama-bot "amabi" angaba khona futhi siwavimbe nge-IP

I-PS: Indaba ingeyombhali, yize ngishicilele ingxenye yakho kuwebhusayithi yami, ngathola inguqulo enwetshiwe ku-Habre.

Source: www.habr.com

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