#20YearsOfCharacters

<?php

$sleep_time_sec = 2;
$list_of_sp = array();
$allow_auto_post = true;

while (true) {
    $start = microtime(true);
    $body = get_page('http://ps20.software.eu.playstation.com');
    preg_match('/<script[^>]*>.*?config\.sp\s*=\s*([^;]+);/s', $body, $matches);

    if (isset($matches[1])) {
        $sp = json_decode($matches[1]);

        if (false === array_key_exists($sp, $list_of_sp)) {
            $redirect_url = "http://ps20.software.eu.playstation.com/redirect.php?sp=$sp";
            $claim_url = get_page($redirect_url);

            // paste into console in browser at 'ps20.software.eu.playstation.com' to preserve http referrer
            echo "jQuery('<a href=\"$claim_url\">Claim</a>').appendTo(document.body)[0].click();\n";

            if ($allow_auto_post) {
                $claim_html = get_page($claim_url, array(CURLOPT_REFERER => 'http://ps20.software.eu.playstation.com/'));

                if (1 === preg_match('/name=(?:"emailAddress"|\'emailAddress\')/s', $claim_html)) {
                    $post_result_html = post_page(
                        $claim_url,
                        array(
                            'firstName'    => '',
                            'lastName'     => '',
                            'addressLine'  => '',
                            'addressTown'  => '',
                            'Country'      => 'UK',
                            'postCode'     => '',
                            'emailAddress' => '',
                            'phoneNumber'  => '',
                            'submit1994'   => 'Submit'
                        ),
                        array(
                            CURLOPT_REFERER => $claim_url
                        ));

                    // form submission result checking not implemented

                    $tempnam = tempnam(sys_get_temp_dir(), 'ps20');
                    file_put_contents($tempnam, $post_result_html);
                    echo "\n$tempnam\n";

                    $list_of_sp[$sp] = $claim_url;
                } else {
                    trigger_error('Failed to fetch the submission form', E_USER_WARNING);
                }
            }

            echo "\n";
        }
    }
    else {
        trigger_error('Failed to locate the "sp" value', E_USER_WARNING);
    }

    $elapsed_sec = microtime(true) - $start;

    if (($sleep_time_us = 1000000.0 * ($sleep_time_sec - $elapsed_sec)) > 0) {
        usleep($sleep_time_us);
    }
}

//region functions
function ch($url, array $opts = array()) {
    $parsed_url = parse_url($url);
    $scheme = isset($parsed_url['scheme']) ? $parsed_url['scheme'] : '';

    switch ($scheme) {
        case 'ftp':
        case 'https':
            break;
        default:
            $scheme = 'http';
    }

    $ip_address = lookup_ip_address($parsed_url['host']);

    $modified_url = array(
            'scheme' => "$scheme://",
            'host'   => $ip_address)
        + $parsed_url;

    if (isset($modified_url['query'])) $modified_url['query'] = "?{$modified_url['query']}";
    if (isset($modified_url['fragment'])) $modified_url['fragment'] = "#{$modified_url['fragment']}";
    $modified_url = implode('', array_values($modified_url));

    $ch = curl_init($modified_url);

    curl_setopt_array(
        $ch,
        $opts + array(
            CURLOPT_AUTOREFERER    => false,
            CURLOPT_FOLLOWLOCATION => false,
            CURLOPT_HTTPHEADER     => array("Host: {$parsed_url['host']}"),
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_SSL_VERIFYHOST => false,
            CURLOPT_TIMEOUT        => 60,
            CURLOPT_USERAGENT      => 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0'
        ));

    return $ch;
}

function get_page($url, array $opts = array()) {
    $ch = ch($url, $opts);
    $body = curl_exec($ch);
    $info = curl_getinfo($ch);

    if (false === $body || 200 !== $info['http_code']) {
        trigger_error('Failed to retrieve the page', E_USER_WARNING);
    }

    return $body;
}

function lookup_ip_address($url) {
    static $dns_cache = array();

    $parsed_url = parse_url($url);
    $host = isset($parsed_url['host']) ? $parsed_url['host'] : $url;

    if (false === array_key_exists($host, $dns_cache)) {
        $ip_address = rtrim(shell_exec(sprintf(
            "nslookup %s 8.8.8.8 | tail -n2 | head -n1 | awk '{print $2};'",
            escapeshellarg($host)
        )));

        if (false === filter_var($ip_address, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
            throw new \Exception("Failed to lookup the hostname for url '$url''");
        }

        $dns_cache[$host] = $ip_address;
    }
    else {
        $ip_address = $dns_cache[$host];
    }

    return $ip_address;
}

function post_page($url, $data = null, array $opts = array()) {
    if (is_array($data)) {
        $data = http_build_query($data);
    }

    $ch = ch($url, array( // override any post fields existing in curlopts
            CURLOPT_POST       => true,
            CURLOPT_POSTFIELDS => $data
        ) + $opts);

    $body = curl_exec($ch);
    $info = curl_getinfo($ch);

    if (false === $body || 200 !== $info['http_code']) {
        trigger_error('Failed to retrieve the page', E_USER_WARNING);
    }

    return $body;
}
//endregion