Facebook message downloader

<?php
        // CODED BY Metts  / metts.blog.hu / da.metts@hotmail.com
        // FACEBOOK all message download
        // A Kódért felelősséget nem vállalok!
        // kő még simple_html_dom.php http://simplehtmldom.sourceforge.net/ egy mappaba vele
        // elvileg letölti az összes üzenet amit eddig a felhasználóval beszéltünk
/*
completed by Greg
mosmá' működik is

tessék böngészőbő' indítani
üzeneteket ide rakja: c://xampp/htdocs/out.html
*/

$login_email = '';
$login_pass = '';

header('Content-Type: text/html; charset=utf-8');
include("phpdom/simple_html_dom.php");

set_time_limit(0);

function req (&$ch) {
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_COOKIEJAR, str_replace('\\','/',dirname(__FILE__)).'/fb_cookies.txt');
    curl_setopt($ch, CURLOPT_COOKIEFILE, str_replace('\\','/',dirname(__FILE__)).'/fb_cookies.txt');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3");
    curl_setopt($ch, CURLOPT_NOBODY, false);
    return curl_exec($ch);
}

function fb_login($login_email, $login_pass) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, 'http://login.facebook.com/login.php?login_attempt=1');
    curl_setopt($ch, CURLOPT_POSTFIELDS,'charset_test=%E2%82%AC%2C%C2%B4%2C%E2%82%AC%2C%C2%B4%2C%E6%B0%B4%2C%D0%94%2C%D0%84&locale=en_US&email='.urlencode($login_email).'&pass='.urlencode($login_pass).'&pass_placeholder=&charset_test=%E2%82%AC%2C%C2%B4%2C%E2%82%AC%2C%C2%B4%2C%E6%B0%B4%2C%D0%94%2C%D0%84');
    curl_setopt($ch, CURLOPT_POST, 1);
    $content = req ($ch);

    $err = curl_error($ch);
    if ($err == 0) {
        $html = str_get_html($content);
        $ret = $html->find('.login_error_box');
        if (count($ret) != 0) {
            $ret = $ret[0];
            return $ret->innertext;
        } else {
            return true;
        }
    } else {
        curl_close($ch);
        return $err;
    }
}

function getUsers () {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, 'http://m.facebook.com/messages/');
    $content = req ($ch);
    $html = str_get_html($content);
    return $html->find('#threadlist_rows', 0);
}

function get_messages ($id) {
    $myFile = "c://xampp/htdocs/out.html";
    $fh = fopen($myFile, 'w');
    $last = '';
    for ($i = 0; true; $i += 7) {
        $url = 'http://m.facebook.com/messages/read/?deleteselected=0&forward=0&start=' . $i . '&page_size=0&tids=' . $id . '&sk=inbox&tid=' . $id . '&see_newer=1&refid=12';

        for ($j = 0; $j < 5; $j ++) {
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_ENCODING, "");
            $html = str_get_html(req ($ch));

            if (is_object ($html)) {
                break;
            } else {
                echo "Error @ try #$j $html\n";
            }
            flush();
            ob_flush();
        }

        $ret = $html->find('div[class=acw apl abt]');
        foreach($ret as $r) {
            fwrite($fh, $r);
            fwrite($fh, "----------\n");
        }

        echo "got $i<br/>";
        flush();
        ob_flush();

        if ($r == $last) {
            break;
        } else {
            $last = $r;
        }
    }
    fclose($fh);
}



if (isset ($_GET['u'])) {
    get_messages ($_GET['u']);
} else {
    for ($i = 0; ($i < 3 && ($ret = fb_login($login_email, $login_pass)) !== true); $i ++);
    if ($ret !== true) {
        exit ("<b>Belépési hiba!</b><br/>$ret");
    }

    $users = getUsers ()->find('a');
    for ($i = 0; $i < count ($users); $i ++) {
        parse_str(parse_url($users[$i]->href, PHP_URL_QUERY), $query);
        if (isset($query['tid'])) {
            echo '<a href="?u=' . $query['tid'] . '">' . trim($users[$i]->plaintext) . '</a><br/>';
        }
    }
}






?>