<?php
// Quick and dirty script to remove spam domains from our mandrill account
define('API_KEY', '');
// Their API doesn't offer a "delete" method, so I'm using their website
define('USERNAME', '');
define('PASSWORD', '');

echo 'Downloading domain list...';
// Step 1, get all "sending domains" via their API
$jsonKey = json_encode(['key' => API_KEY]);
$api = curl_init('https://mandrillapp.com/api/1.0/senders/domains.json');
curl_setopt_array($api, [
	CURLOPT_POST => TRUE,
	CURLOPT_RETURNTRANSFER => TRUE,
	CURLOPT_POSTFIELDS => $jsonKey,
	CURLOPT_HTTPHEADER => [
		'Content-type: application/json',
		'Content-length: '.strlen($jsonKey)
	]
]);

if(($jsonDomains = curl_exec($api)) === FALSE){
	die("cURL error\n".curl_error($api)."\n");
}
echo "done.\n";
$domains = json_decode($jsonDomains, TRUE);
curl_close($api);
echo count($domains)." domains found\n";

// Step 2: Filter out *valid* domains!
echo "\n";
$badDomains = [];
foreach($domains as $domain){
	if($domain['spf']['valid'] || $domain['dkim']['valid'] || $domain['valid_signing']){
		echo "Keeping {$domain['domain']}\n";
	}
	else{
		$badDomains[] = $domain['domain'];
	}
}
echo "\nRemoving ".count($badDomains)." domains\n";


// Step 3: Login to MailChimp's website
$siteCookies = tempnam(sys_get_temp_dir(), 'mandrill');
// To do this, we need to scrape the '__csrf_token' from the form
$login = curl_init('https://login.mailchimp.com/');
curl_setopt_array($login, [
	CURLOPT_HTTPGET => TRUE,
	CURLOPT_RETURNTRANSFER => TRUE,
	CURLOPT_FOLLOWLOCATION => TRUE,
	CURLOPT_AUTOREFERER => TRUE,
	CURLOPT_COOKIEFILE => $siteCookies,
	CURLOPT_COOKIEJAR => $siteCookies,
	CURLOPT_HTTPHEADER => [
		'Accept-Encoding: gzip, deflate',
	]
]);
if(($html = curl_exec($login)) === FALSE){
	die("cURL error\n".curl_error($login)."\n");
}
curl_close($login);
	
$web = new DOMDocument;
libxml_use_internal_errors(TRUE);
$web->loadHTML(gzdecode($html));
$xpath = new DOMXpath($web);
$csrf_el = $xpath->query("//input[@name='__csrf_token']/@value");
$csrf = count($csrf_el) > 0 ? $csrf_el->item(0)->nodeValue : '';
echo "Captured __csrf_token={$csrf}\n";

$website = curl_init('https://login.mailchimp.com/login/post');
curl_setopt_array($website, [
	#CURLOPT_VERBOSE => TRUE,
	CURLOPT_POST => TRUE,
	CURLOPT_RETURNTRANSFER => TRUE,
	CURLOPT_POSTFIELDS => http_build_query([
		'referrer' => '/transactional/launch',
		'username' => USERNAME,
		'password' => PASSWORD,
		'__csrf_token' => $csrf,
		'from' => '',
		'auth_token' => '',
		'auth_system' => '',
	]),
	CURLOPT_FOLLOWLOCATION => TRUE,
	CURLOPT_AUTOREFERER => TRUE,
	CURLOPT_COOKIEFILE => $siteCookies,
	CURLOPT_COOKIEJAR => $siteCookies,
	CURLOPT_REFERER => 'https://login.mailchimp.com/',
	CURLOPT_HTTPHEADER => [
		'Origin: https://login.mailchimp.com',
		'Accept-Encoding: gzip, deflate',
	]
]);

if(($x = curl_exec($website)) === FALSE){
	echo "Cannot login to Mandrill\n";
	die("cURL error\n".curl_error($website)."\n");
}
curl_close($website);

// MailChimp is doing something "fun",
// it's returning a form you need to submit... after posting the login form
$loginForm = new DOMDocument;
$loginForm->loadHTML(gzdecode($x));
$formData = $loginForm->getElementsByTagName('form');
if (count($formData)) {
    $loginUrl = $formData->item(0)->getAttribute('action');
    $loginFormData = [];
    
    foreach ($formData->item(0)->getElementsByTagName('input') as $field) {
        $loginFormData[$field->getAttribute('name')] = $field->getAttribute('value');
    }
    
    $website = curl_init($loginUrl);
    curl_setopt_array($website, [
        #CURLOPT_VERBOSE => TRUE,
        CURLOPT_POST => TRUE,
        CURLOPT_RETURNTRANSFER => TRUE,
        CURLOPT_POSTFIELDS => http_build_query($loginFormData),
        CURLOPT_FOLLOWLOCATION => TRUE,
        CURLOPT_AUTOREFERER => TRUE,
        CURLOPT_COOKIEFILE => $siteCookies,
        CURLOPT_COOKIEJAR => $siteCookies,
        CURLOPT_REFERER => 'https://login.mailchimp.com/login/post/',
        CURLOPT_HTTPHEADER => [
            'Origin: https://login.mailchimp.com',
            'Accept-Encoding: gzip, deflate',
        ]
    ]);

    if(($x = curl_exec($website)) === FALSE){
        echo "Cannot login to Mandrill\n";
        die("cURL error\n".curl_error($website)."\n");
    }
    curl_close($website);
    
    // After posting this login form, we redirect to Mandrill
    // And guess what, another form to post...
    $mandrillForm = new DOMDocument;
    $mandrillForm->loadHTML(gzdecode($x));
    $formData = $mandrillForm->getElementsByTagName('form');
    
    if (count($formData)) {
        $adminDomain = parse_url($loginUrl, PHP_URL_HOST);
        $loginFormData = [];
        
        foreach ($formData->item(0)->getElementsByTagName('input') as $field) {
            $loginFormData[$field->getAttribute('name')] = $field->getAttribute('value');
        }
        
        $website = curl_init($formData->item(0)->getAttribute('action'));
        curl_setopt_array($website, [
            #CURLOPT_VERBOSE => TRUE,
            CURLOPT_POST => TRUE,
            CURLOPT_RETURNTRANSFER => TRUE,
            CURLOPT_POSTFIELDS => http_build_query($loginFormData),
            CURLOPT_FOLLOWLOCATION => TRUE,
            CURLOPT_AUTOREFERER => TRUE,
            CURLOPT_COOKIEFILE => $siteCookies,
            CURLOPT_COOKIEJAR => $siteCookies,
            CURLOPT_REFERER => "https://{$adminDomain}/transactional/launch",
            CURLOPT_HTTPHEADER => [
                "Origin: https://{$adminDomain}",
                'Accept-Encoding: gzip, deflate',
            ]
        ]);

        if(($x = curl_exec($website)) === FALSE){
            echo "Cannot login to Mandrill\n";
            die("cURL error\n".curl_error($website)."\n");
        }
        curl_close($website);
    }
}

echo "Logged into Mandrill website\n";

echo "Removing domains via website...\n";
foreach($badDomains as $domain){
	echo "\t{$domain}...";
	$query = http_build_query([
		'domain' => $domain
	]);
	
	$website = curl_init("https://mandrillapp.com/settings/delete-domain?{$query}");
	curl_setopt_array($website, [
		CURLOPT_HTTPGET => TRUE,
		CURLOPT_RETURNTRANSFER => TRUE,
		CURLOPT_FOLLOWLOCATION => TRUE,
		CURLOPT_AUTOREFERER => TRUE,
		CURLOPT_COOKIEFILE => $siteCookies,
		CURLOPT_COOKIEJAR => $siteCookies,
		CURLOPT_REFERER => 'https://mandrillapp.com/settings/sending-domains',
	]);
	
	if(($x = curl_exec($website)) === FALSE){
		echo "Cannot remove {$domain}\n";
		die("cURL error\n".curl_error($website)."\n");
	}
	curl_close($website);
	echo "done\n";
}
echo "\ndone\n";