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cloudflare-tor/tool/irssi_cf_alturl.pl

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Initial commit
2020-03-18 10:28:19 +00:00
#!/usr/bin/perl -w
# This Irssi script automatically check incoming http/https links
# and replace it to archive one if it is MITMed.
#
# Irssi /set Options
# you can view your current settigns by running "/set cflarealt" in Irssi
#
# /set cflarealt_debug <on|off> -- (off) if you have a problem try turning this on to debug
# /set cflarealt_send2channel <on|off> -- (off) send the converted URL publicly to everyone in your channels
# /set cflarealt_channels <"#channel1, #channel2, etc"> -- Channels to automatically convert. Empty Defaults to all
#
# /set cflarealt_shorturl_activate <on|off> -- (off) set it 'on' to use shortner
# /set cflarealt_shorturl_min <40> -- (40) How long a url has to be to trigger automatic url shortening
# /set cflarealt_shorturl_useonion <on|off> -- (off) set it 'on' to use .onion
#
# /set cflarealt_localdbpath <"string to path"> -- () '/path/database/split/'
# /set cflarealt_uselocaldb <on|off> -- (off) if 'on', please set path to local database (or the script will die)
#
# /set cflarealt_printurl <on|off> -- (off) if 'on' print converted URL
# /set cflarealt_donotsend <on|off> -- (off) if 'on' do not send converted URL
#---------------------------------------------------------------------
##use strict;
use vars qw($VERSION %IRSSI);
Update 'tool/irssi_cf_alturl.pl'
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$VERSION = "20201110";
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%IRSSI = (
# Special thanks to: "eo, tsaavik"
authors => "Anonymous",
irssi_cf_alturl.pl
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contact => 'anonymous@stop_cloudflare.nab',
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name => "irssi_cf_alturl.pl",
description => "Cloudflare URL replacer",
license => "WTFPL",
changed => "$VERSION"
);
use Irssi;
use Irssi::Irc;
use LWP::Simple;
use LWP::UserAgent;
my (
$cfg_minurllen, $cfg_send2chan, $cfg_useshort, $cfg_shortonion,
$cfg_isdebug, $cfg_uselocaldb, $cfg_localdbpath, $cfg_chanlist
);
my ( $cfg_printurl, $cfg_donotsendurl );
my @cached = ();
sub setuphandler {
Irssi::settings_add_bool( "cflarealt", "cflarealt_send2channel", 0 );
if ( Irssi::settings_get_bool("cflarealt_send2channel") ) {
print "cflarealt: sending of shorturl's to public channels enabled";
$cfg_send2chan = 1;
}
Irssi::settings_add_bool( "cflarealt", "cflarealt_shorturl_activate", 0 );
if ( Irssi::settings_get_bool("cflarealt_shorturl_activate") ) {
print "cflarealt: URL shortner enabled";
$cfg_useshort = 1;
}
Irssi::settings_add_bool( "cflarealt", "cflarealt_shorturl_useonion", 0 );
if ( Irssi::settings_get_bool("cflarealt_shorturl_useonion") ) {
print "cflarealt: URL onion enabled";
$cfg_shortonion = 1;
}
Irssi::settings_add_str( "cflarealt", "cflarealt_channels", "" );
$cfg_chanlist = Irssi::settings_get_str("cflarealt_channels");
if ($cfg_chanlist) {
print "cflarealt: Following channels are now parsed $cfg_chanlist";
}
Irssi::settings_add_int( "cflarealt", "cflarealt_shorturl_min", 40 );
my $old_min_url_length = $cfg_minurllen;
$cfg_minurllen = Irssi::settings_get_int("cflarealt_shorturl_min");
if ( $cfg_minurllen != $old_min_url_length ) {
print "cflarealt: min_url_length sucessfully set to $cfg_minurllen";
}
Irssi::settings_add_bool( "cflarealt", "cflarealt_debug", 0 );
my $old_debug = $cfg_isdebug;
$cfg_isdebug = Irssi::settings_get_bool("cflarealt_debug");
if ( $cfg_isdebug != $old_debug ) {
if ($cfg_isdebug) {
print "cflarealt: Debug Mode Enabled";
$cfg_isdebug = 1;
}
else {
print "cflarealt: Debug Mode Disabled";
$cfg_isdebug = 0;
}
}
Irssi::settings_add_bool( "cflarealt", "cflarealt_uselocaldb", 0 );
if ( Irssi::settings_get_bool("cflarealt_uselocaldb") ) {
print "cflarealt: Lookup Local DB enabled";
$cfg_uselocaldb = 1;
}
Irssi::settings_add_str( "cflarealt", "cflarealt_localdbpath", "" );
$cfg_localdbpath = Irssi::settings_get_str("cflarealt_localdbpath");
if ($cfg_localdbpath) {
print "cflarealt: DB path set to $cfg_localdbpath";
}
Irssi::settings_add_bool( "cflarealt", "cflarealt_printurl", 0 );
if ( Irssi::settings_get_bool("cflarealt_printurl") ) {
print "cflarealt: print URL enabled";
$cfg_printurl = 1;
}
Irssi::settings_add_bool( "cflarealt", "cflarealt_donotsend", 0 );
if ( Irssi::settings_get_bool("cflarealt_donotsend") ) {
print "cflarealt: dont-send enabled";
$cfg_donotsendurl = 1;
}
}
sub GotUrl {
my ( $server, $data, $nick, $addr, $target ) = @_;
if ( !$server || !$server->{connected} ) {
Irssi::print("Not connected to server");
return;
}
return unless ( goodchan($target) );
$data =~ s/^\s+//;
$data =~ s/\s+$//;
my @urls = ();
my @knownShortFQDN = ( 'tinyurl.com', 'bit.ly' );
my ( $url, $a, $return, $char, $ch ) = "";
my $same = 0;
return unless ( ( $data =~ /\bhttp\:/ ) || ( $data =~ /\bhttps\:/ ) );
deb("$target triggered GotUrl() with url: $data");
# split on whitespace and get the url(s) out
# done this way in case there are more than
# one url per line.
foreach ( split( /\s/, $data ) ) {
if ( ( $_ =~ /^http\:/ ) || ( $_ =~ /^https\:/ ) ) {
foreach $a (@urls) {
if ( $_ eq $a ) {
# incase they use the same url on the line.
$same = 1;
next;
}
}
if ( $same == 0 ) {
$same = 0;
push( @urls, $_ );
}
}
}
my ( $myurl, $fqdn, $junk, $mytype );
my ( $url, $browser, $response, $answer );
my ( $line, $ifoundit );
foreach (@urls) {
$myurl = $_;
( $junk, $fqdn ) = split( /\/\//, $myurl, 2 );
( $fqdn, $junk ) = split( /\//, $fqdn, 2 );
$mytype = '';
if ( length($fqdn) >= 4 ) {
## Start of Act
## ACT0. If ShortURL, expand it. (knownShortFQDN)
if ( grep( /^$fqdn$/, @knownShortFQDN ) ) {
deb("$target Expand $fqdn");
$browser = LWP::UserAgent->new;
$answer = HTTP::Request->new( GET => $myurl );
$response = $browser->request($answer);
if ( $response->is_success and $response->previous ) {
if ( $myurl ne $response->request->uri ) {
$junk = $response->request->uri;
if ( index( $junk, 'http' ) == 0 ) {
deb("$target Expanded $fqdn");
$myurl = $junk;
( $junk, $fqdn ) = split( /\/\//, $myurl, 2 );
( $fqdn, $junk ) = split( /\//, $fqdn, 2 );
}
}
}
}
## ACT1: Update URL if Cloudflared
if ( grep( /^$fqdn$/, @cached ) ) {
deb("$target Found in Cache $fqdn");
$mytype = '^B^C3[Archive]^O ';
$myurl = 'https://web.archive.org/web/' . $myurl;
}
else {
if ( $cfg_uselocaldb == 1 ) {
deb("$target Lookup local DB about $fqdn");
open( CFSFILE,
$cfg_localdbpath
. "cloudflare_"
. substr( $fqdn, 0, 1 )
. ".txt" )
or die "file not found for $fqdn";
$ifoundit = 0;
while (<CFSFILE>) {
$line = $_;
$line =~ s/\R//g;
if ( $line eq $fqdn ) {
$ifoundit = 1;
last;
}
}
close CFSFILE;
if ( $ifoundit == 1 ) {
push( @cached, $fqdn );
$mytype = '^B^C3[Archive]^O ';
$myurl = 'https://web.archive.org/web/' . $myurl;
}
}
else {
deb("$target Asking API about $fqdn");
$answer = '';
$url =
Update 'tool/irssi_cf_alturl.pl'
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'https://api.nnpaefp7pkadbxxkhz2agtbv2a4g5sgo2fbmv3i7czaua354334uqqad.onion/_/ismitm.php?f='
Initial commit
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. $fqdn;
$browser = LWP::UserAgent->new;
irssi_cf_alturl.pl
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$browser->agent("Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0");
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$response = $browser->get($url);
$answer = $response->content;
if ( $answer eq '[true,true]' ) {
push( @cached, $fqdn );
$mytype = '^B^C3[Archive]^O ';
$myurl = 'https://web.archive.org/web/' . $myurl;
}
}
}
## ACT2: Short URL __if__ enabled and long
if ( $cfg_useshort == 1 ) {
if ( length($myurl) > $cfg_minurllen ) {
if ( $cfg_shortonion == 1 ) {
deb("$target Creating Short Onion for $myurl");
Update 'tool/irssi_cf_alturl.pl'
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$url = 'http://hbfkuwcbzhcht33fetbiajuh7i6gqupgnyupxcmujiky34drzmpajrid.onion/?i=new&url=' . $myurl;
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$browser = LWP::UserAgent->new;
irssi_cf_alturl.pl
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$browser->agent("Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0");
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$response = $browser->get($url);
$answer = $response->content;
if (
index( $answer,
Update 'tool/irssi_cf_alturl.pl'
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'http://hbfkuwcbzhcht33fetbiajuh7i6gqupgnyupxcmujiky34drzmpajrid.onion/?' ) == 0
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)
{
if ( $mytype eq '' ) {
$mytype = '^B^C7[Onion]^O ';
}
else {
$mytype = '^B^C2[Onion,Archive]^O ';
}
$myurl = $answer;
}
}
else {
deb("$target Creating Short URL for $myurl");
$url =
'https://ux.nu/api/short?format=plain&url=' . $myurl;
$browser = LWP::UserAgent->new;
irssi_cf_alturl.pl
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$browser->agent("Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0");
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$response = $browser->get($url);
$answer = $response->content;
if ( index( $answer, 'https://ux.nu/' ) == 0 ) {
if ( $mytype eq '' ) {
$mytype = '^B^C7[Short]^O ';
}
else {
$mytype = '^B^C2[Short,Archive]^O ';
}
$myurl = $answer;
}
}
}
}
##ACT3: Result
if ( $cfg_printurl == 1 ) {
Irssi::print("URL: $mytype$myurl");
}
if ( $cfg_donotsendurl != 1 ) {
if ( $cfg_send2chan == 1 ) {
$server->command("msg $target $myurl");
}
else {
$server->print( "$target", "$mytype$myurl",
MSGLEVEL_CLIENTCRAP );
}
}
## End of Act
}
deb("$target process done for input $myurl");
}
## Cleanup cache
if ( $#cached > 500 ) {
@cached = ();
}
return;
}
sub deb($) {
Irssi::print(shift) if ( $cfg_isdebug == 1 );
}
sub goodchan {
my $chan = shift;
return ("OK") if ( !$cfg_chanlist );
foreach ( split( /\,/, $cfg_chanlist ) ) {
return ("$_") if ( $_ =~ /$chan/i );
}
return undef;
}
setuphandler();
Irssi::signal_add( "setup changed", "setuphandler" );
Irssi::signal_add_last( "message public", "GotUrl" );
Irssi::signal_add_last( "ctcp action", "GotUrl" );
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