Import scripts from scripts.irssi.org

1 files changed, 558 insertions, 0 deletions

diff --git a/scripts/blowjob.pl b/scripts/blowjob.pl
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+++ b/scripts/blowjob.pl
@@ -0,0 +1,558 @@
+#!/usr/bin/perl -w
+use strict;
+
+# BlowJob 0.9.0, a crypto script - ported from xchat
+# was based on rodney mulraney's crypt
+# changed crypting method to Blowfish+Base64+randomness+Z-compression
+# needs :
+#         Crypt::CBC,
+#         Crypt::Blowfish,
+#         MIME::Base64,
+#         Compress::Zlib
+#
+# crypted format is :
+# HEX(Base64((paranoia-factor)*(blowfish(RANDOM+Zcomp(string))+RANDOM)))
+#
+# 10-03-2004 Removed seecrypt, fixed two minor bugs
+# 09-03-2004 Supporting multiline messages now.
+# 08-03-2004 Lots of bugfixes on the irssi version by Thomas Reifferscheid
+# 08-03-2004 CONF FILE FORMAT CHANGED
+#
+#            from server:channel:key:paranoia
+#            to   server:channel:paranoia:key
+#
+#            /perm /bconf /setkey /showkey working now
+#            keys may contain colons ":" now.
+#
+#
+# 06-12-2001 Added default umask for blowjob.keys
+# 05-12-2001 Added paranoia support for each key
+# 05-12-2001 Added conf file support
+# 05-12-2001 Added delkey and now can handle multi-server/channel keys
+# 05-12-2001 permanent crypting to a channel added
+# 05-12-2001 Can now handle multi-channel keys
+# just /setkey <key> on the channel you are to associate a channel with a key
+#
+# --- conf file format ---
+#
+# # the generic key ( when /setkey has not been used )
+# key:            generic key value
+# # header that marks a crypted sentance
+# header:         {header}
+# # enable wildcards for multiserver entries ( useful for OPN for example )
+# wildcardserver: yes
+#
+# --- end of conf file ---
+#
+# iMil <imil@gcu-squad.org>
+# skid <skid@gcu-squad.org>
+# Foxmask <odemah@gcu-squad.org>
+# Thomas Reifferscheid <blowjob@reifferscheid.org>
+
+use Crypt::CBC;
+use Crypt::Blowfish;
+use MIME::Base64;
+use Compress::Zlib;
+
+use Irssi::Irc;
+use Irssi;
+use vars qw($VERSION %IRSSI $cipher);
+
+$VERSION = "0.9.0";
+%IRSSI = (
+    authors => 'iMil,Skid,Foxmask,reiffert',
+    contact => 'imil@gcu-squad.org,blowjob@reifferscheid.org,#blowtest@freenode',
+    name => 'blowjob',
+    description => 'Crypt IRC communication with blowfish encryption. Supports public #channels, !channels, +channel, querys and dcc chat. Roadmap for Version 1.0.0 is to get some feedback and cleanup. Join #blowtest on freenode (irc.debian.org) to get latest stuff available. Note to users upgrading from versions prior to 0.8.5: The blowjob.keys format has changed.',
+    license => 'GNU GPL',
+    url => 'http://ftp.gcu-squad.org/misc/',
+);
+
+
+############# IRSSI README AREA #################################
+#To install this script just do
+#/script load ~/blowjob-irssi.pl
+#  and
+#/blowhelp
+#  to read all the complete feature of the script :)
+#To uninstall it do
+#/script unload blowjob-irssi
+################################################################
+
+
+my $key = 'very poor key' ; # the default key
+my $header = "{blow}";
+# Crypt loops, 1 should be enough for everyone imho ;)
+# please note with a value of 4, a single 4-letter word can generate
+# a 4 line crypted sentance
+my $paranoia = 1;
+# add a server mask by default ?
+my $enableWildcard="yes";
+
+my $alnum = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+
+my $gkey;
+sub loadconf
+{
+  my $fconf =Irssi::get_irssi_dir()."/blowjob.conf";
+  my @conf;
+  open (CONF, "<$fconf");
+
+  if (!( -f CONF)) {
+    Irssi::print("\00305> $fconf not found, setting to defaults\n");
+    Irssi::print("\00305> creating $fconf with default values\n\n");
+    close(CONF);
+    open(CONF,">$fconf");
+    print CONF "key:			$key\n";
+    print CONF "header:			$header\n";
+    print CONF "wildcardserver:		$enableWildcard\n";
+    close(CONF);
+    return 1;
+  }
+
+  @conf=<CONF>;
+  close(CONF);
+
+  my $current;
+  foreach(@conf) {
+    $current = $_;
+    $current =~ s/\n//g;
+    if ($current =~ m/key/) {
+      $current =~ s/.*\:[\ \t]*//;
+      $key = $current;
+      $gkey = $key;
+    }
+    if ($current =~ m/header/) {
+      $current =~ s/.*\:[\s\t]*\{(.*)\}.*/{$1}/;
+      $header = $current;
+    }
+    if ($current =~ m/wildcardserver/) {
+      $current =~ s/.*\:[\ \t]*//;
+      $enableWildcard = $current;
+    }
+  }
+  Irssi::print("\00314- configuration file loaded\n");
+  return 1;
+}
+loadconf;
+
+my $kfile ="$ENV{HOME}/.irssi/blowjob.keys";
+my @keys;
+$gkey=$key;
+my $gparanoia=$paranoia;
+
+sub loadkeys
+{
+  if ( -e "$kfile" ) {
+    open (KEYF, "<$kfile");
+    @keys = <KEYF>;
+    close (KEYF);
+  }
+  Irssi::print("\00314- keys reloaded (Total:\00315 ".scalar @keys."\00314)\n");
+  return 1;
+}
+loadkeys;
+
+sub getkey
+{
+  my ($curserv, $curchan) = @_;
+
+  my $gotkey=0;
+  my $serv;
+  my $chan;
+  my $fkey;
+
+  foreach(@keys) {
+    chomp;                                            # keys can contain ":" now. Note:
+    my ($serv,$chan,$fparanoia,$fkey)=split /:/,$_,4; # place of paranoia has changed!
+    if ( $curserv =~ /$serv/ and $curchan eq $chan ) {
+      $key= $fkey;
+      $paranoia=$fparanoia;
+      $gotkey=1;
+    }
+  }
+  if (!$gotkey) {
+    $key=$gkey;
+    $paranoia=$gparanoia;
+  }
+  $cipher=new Crypt::CBC($key,'Blowfish',undef);
+}
+
+sub setkey
+{
+  my (undef,$server, $channel) = @_;
+  if (! $channel) { return 1; }
+  my $curchan = $channel->{name};
+  my $curserv = $server->{address};
+  # my $key = $data;
+
+  my $fparanoia;
+
+  my $newchan=1;
+  umask(0077);
+  unless ($_[0] =~ /( +\d$)/) {
+     $_[0].= " $gparanoia";
+  }
+  ($key, $fparanoia) = ($_[0] =~ /(.*) +(\d)/);
+
+  if($enableWildcard =~ /[Yy][Ee][Ss]/) {
+      $curserv =~ s/(.*?)\./(.*?)\./;
+    Irssi::print("\00314IRC server wildcards enabled\n");
+  }
+
+  # Note, place of paranoia has changed!
+  my $line="$curserv:$curchan:$fparanoia:$key";
+
+  open (KEYF, ">$kfile");
+  foreach(@keys) {
+    s/\n//g;
+    if (/^$curserv\:$curchan\:/) {
+      print KEYF "$line\n";
+      $newchan=0;
+    } else {
+      print KEYF "$_\n";
+    }
+  }
+  if ($newchan) {
+    print KEYF "$line\n";
+  }
+  close (KEYF);
+  loadkeys;
+  Irssi::active_win()->print("\00314key set to \00315$key\00314 for channel \00315$curchan");
+  return 1 ;
+}
+
+sub delkey
+{
+  my ($data, $server, $channel) = @_;
+  my $curchan = $channel->{name};
+  my $curserv = $server->{address};
+
+  my $serv;
+  my $chan;
+
+  open (KEYF, ">$kfile");
+  foreach(@keys) {
+    s/\n//g;
+    ($serv,$chan)=/^(.*?)\:(.*?)\:/;
+   unless ($curserv =~ /$serv/ and $curchan=~/^$chan$/) {
+      print KEYF "$_\n";
+    }
+  }
+  close (KEYF);
+  Irssi::active_win()->print("\00314key for channel \00315$curchan\00314 deleted");
+  loadkeys;
+  return 1 ;
+}
+
+sub showkey {
+  my (undef, $server, $channel) = @_;
+  if (! $channel) { return 1; }
+  my $curchan = $channel->{name};
+  my $curserv = $server->{address};
+
+  getkey($curserv,$curchan);
+
+  Irssi::active_win()->print("\00314current key is : \00315$key");
+  return 1 ;
+}
+
+sub enc
+{
+  my ($curserv,$curchan, $in) = @_;
+  my $prng1="";
+  my $prng2="";
+
+  # copy & paste from former sub blow()
+
+  for (my $i=0;$i<4;$i++) {
+    $prng1.=substr($alnum,int(rand(61)),1);
+    $prng2.=substr($alnum,int(rand(61)),1);
+  }
+
+
+  getkey($curserv,$curchan);
+
+  $cipher->start('encrypting');
+
+  my $tbout = compress($in);
+  my $i;
+  for ($i=0;$i<$paranoia;$i++) {
+    $tbout = $prng1.$tbout;
+    $tbout = $cipher->encrypt($tbout);
+    $tbout .= $prng2;
+    # don't wan't to see "RandomIV"
+    $tbout =~ s/^.{8}//;
+  }
+
+  $tbout = encode_base64($tbout);
+  $tbout = unpack("H*",$tbout);
+  $tbout = $header." ".$tbout;
+  $tbout =~ s/=+$//;	
+
+  $cipher->finish();
+
+  return (length($tbout),$tbout);
+
+}
+
+sub irclen
+{
+  my ($len,$curchan,$nick,$userhost) = @_;
+
+  # calculate length of "PRIVMSG #blowtest :{blow} 4b7257724a ..." does not exceed
+  # it may not exceed 511 bytes
+  # result gets handled by caller.
+
+  return ($len + length($curchan) + length("PRIVMSG : ") + length($userhost) + 1 + length($nick) );
+}
+sub recurs
+{
+  my ($server,$curchan,$in) = @_;
+
+  # 1. devide input line by 2.                    <--|
+  #    into two halfes, called $first and $second.   |
+  # 2. try to decrease $first to a delimiting " "    |
+  #    but only try on the last 8 bytes              ^
+  # 3. encrypt $first                                |
+  #    if result too long, call sub recurs($first)----
+  # 4. encrypt $second                               ^
+  #    if result too long, call sub recurs($second)--|
+  # 5. pass back encrypted halfes as reference
+  #    to an array.
+
+
+  my $half = length($in)/2-1;
+  my $first = substr($in,0,$half);
+  my $second = substr($in,$half,$half+3);
+  if ( (my $pos = rindex($first," ",length($first)-8) ) != -1)
+  {
+	$second = substr($first,$pos+1,length($first)-$pos) . $second;
+        $first = substr($first,0,$pos);
+  }
+
+  my @a;
+
+  my ($len,$probablyout);
+
+  ($len,$probablyout) = enc($server->{address},$curchan,$first);
+
+  if ( irclen($len,$curchan,$server->{nick},$server->{userhost}) > 510)
+  {
+    my @b=recurs($server,$curchan,$first);
+    push(@a,@{$b[0]});
+  } else {
+    push(@a,$probablyout);
+  }
+
+  ($len,$probablyout) = enc($server->{address},$curchan,$second);
+  if ( irclen($len,$curchan,$server->{nick},$server->{userhost}) > 510)
+  {
+    my @b = recurs($server,$curchan,$second);
+    push(@a,@{$b[0]});
+  } else {
+    push(@a,$probablyout);
+  }
+  return \@a;
+
+}
+
+
+sub printout
+{
+   my ($aref,$server,$curchan) = @_;
+
+   # encrypted lines get stored [ '{blow} yxcvasfd', '{blow} qewrdf', ... ];
+   # in an arrayref
+
+   foreach(@{$aref})
+   {
+     	$server->command("/^msg -$server->{tag} $curchan ".$_);
+   }
+}
+
+sub enhanced_printing
+{
+  my ($server,$curchan,$in) = @_;
+
+  # calls the recursing sub recurs ... and 
+  my $arref = recurs($server,$curchan,$in);
+  # print out.
+  printout($arref,$server,$curchan);
+
+}
+
+sub blow
+{
+  my ($data, $server, $channel) = @_;
+  if (! $channel) { return 1;}
+  my $in = $data ;
+  my $nick = $server->{nick};
+  my $curchan = $channel->{name};
+  my $curserv = $server->{address};
+
+  my ($len,$encrypted_message) = enc($curserv,$curchan,$in);
+
+  $server->print($channel->{name}, "<$nick|{crypted}> \00311$in",MSGLEVEL_CLIENTCRAP);
+
+  $len = length($encrypted_message); # kept for debugging
+
+  if ( irclen($len,$curchan,$server->{nick},$server->{userhost}) > 510)
+  {
+    # if complete message too long .. see sub irclen
+    enhanced_printing($server,$curchan,$data);
+  } else {
+    # everything is fine, just print out
+    $server->command("/^msg -$server->{tag} $curchan $encrypted_message");
+  }
+
+  return 1 ;
+}
+
+sub infoline
+{
+  my ($server, $data, $nick, $address) = @_;
+
+  my ($channel,$text,$msgline,$msgnick,$curchan,$curserv);
+
+  if ( ! defined($address) ) # dcc chat
+  {
+    $msgline = $data;
+    $curserv = $server->{server}->{address};
+    $channel = $curchan = "=".$nick;
+    $msgnick = $nick;
+    $server  = $server->{server};
+  } else 
+  {
+    ($channel, $text) = $data =~ /^(\S*)\s:(.*)/;
+    $msgline = $text;
+    $msgnick = $server->{nick};
+    $curchan = $channel;
+    $curserv = $server->{address};
+  }
+
+  if ($msgline =~ m/^$header/) {
+    my $out = $msgline;
+    $out =~ s/\0030[0-9]//g;
+    $out =~ s/^$header\s*(.*)/$1/;
+
+    if ($msgnick eq $channel)
+    {
+       $curchan = $channel = $nick;
+    }
+
+    getkey($curserv,$curchan);
+
+    $cipher->start('decrypting');
+    $out = pack("H*",$out);
+    $out = decode_base64($out);
+
+    my $i;
+    for ($i=0;$i<$paranoia;$i++) {
+      $out = substr($out,0,(length($out)-4));
+      # restore RandomIV
+      $out = 'RandomIV'.$out;
+      $out = $cipher->decrypt($out);
+      $out = substr($out,4);
+    }
+    $out = uncompress($out);
+
+    $cipher->finish;
+
+    if(length($out))
+    {
+       $server->print($channel, "<$nick|{uncrypted}> \00311$out", MSGLEVEL_CLIENTCRAP);
+       Irssi::signal_stop();
+    }
+    return 1;
+
+  }
+  return 0 ;
+}
+
+sub dccinfoline
+{
+  my ($server, $data) = @_;
+  infoline($server,$data,$server->{nick},undef);
+}
+my %permchans={};
+sub perm
+{
+   my ($data, $server, $channel) = @_;
+   if (! $channel) { return 1; }
+   my $curchan = $channel->{name};
+   my $curserv = $server->{address};
+  
+   if ( exists($permchans{$curserv}{$curchan}) && $permchans{$curserv}{$curchan} == 1) {
+    delete $permchans{$curserv}{$curchan};
+    Irssi::active_win()->print("\00314not crypting to \00315$curchan\00314 on \00315$curserv\00314 anymore");
+  } else {
+    $permchans{$curserv}{$curchan} = 1;
+    Irssi::active_win()->print("\00314crypting to \00315$curchan on \00315$curserv");
+  }
+  return 1;
+}
+sub myline
+{
+  my ($data, $server, $channel) = @_;
+  if (! $channel) { return 1; }
+  my $curchan = $channel->{name};
+  my $curserv = $server->{address};
+  my $line = shift;
+  chomp($line);
+  if (length($line) == 0)
+  {
+    return;
+  }
+  my $gotchan = 0;
+  foreach(@keys) {
+    s/\n//g;
+    my ($serv,$chan,undef,undef)=split /:/;
+    if ( ($curserv =~ /$serv/ && $curchan =~ /^$chan$/ && exists($permchans{$curserv}{$curchan}) && $permchans{$curserv}{$curchan} == 1) || (exists($permchans{$curserv}{$curchan}) && $permchans{$curserv}{$curchan} == 1))
+    {
+      $gotchan = 1;
+    }
+  }
+  if ($gotchan)
+  {
+
+    blow($line,$server,$channel);
+    Irssi::signal_stop();
+    return 1;
+  }
+}
+
+sub reloadconf
+{
+  loadconf;
+  loadkeys;
+}
+sub help
+{
+  Irssi::print("\00314[\00303bl\003090\00303wjob\00314]\00315 script :\n");
+  Irssi::print("\00315/setkey <newkey> [<paranoia>] :\00314 new key for current channel\n") ;
+  Irssi::print("\00315/delkey                       :\00314 delete key for current channel");
+  Irssi::print("\00315/showkey                      :\00314 show your current key\n") ;
+  Irssi::print("\00315/blow   <line>                :\00314 send crypted line\n") ;
+  Irssi::print("\00315/perm                         :\00314 flag current channel as permanently crypted\n") ;
+  Irssi::print("\00315/bconf                        :\00314 reload blowjob.conf\n") ;
+
+  return 1 ;
+}
+
+Irssi::print("blowjob script $VERSION") ;
+Irssi::print("\n\00314[\00303bl\003090\00303wjob\00314] v$VERSION\00315 script loaded\n\n");
+Irssi::print("\00314- type \00315/blowhelp\00314 for options\n") ;
+Irssi::print("\00314- paranoia level is      : \00315$paranoia\n") ;
+Irssi::print("\00314- generic key is         : \00315$key\n") ;
+Irssi::print("\n\00314* please read script itself for documentation\n");
+Irssi::signal_add("event privmsg","infoline") ;
+Irssi::signal_add("dcc chat message","dccinfoline");
+Irssi::command_bind("blowhelp","help") ;
+Irssi::command_bind("setkey","setkey") ;
+Irssi::command_bind("delkey","delkey");
+Irssi::command_bind("blow","blow") ;
+Irssi::command_bind("showkey","showkey") ;
+Irssi::command_bind("perm","perm") ;
+Irssi::command_bind("bconf","reloadconf") ;
+Irssi::signal_add("send text","myline") ;