1 files changed, 120 insertions, 0 deletions
diff --git a/tool/irssi_cf_alturl.pl b/tool/irssi_cf_alturl.pl
new file mode 100644
index 00000000..22264882
--- /dev/null
+++ b/tool/irssi_cf_alturl.pl
@@ -0,0 +1,120 @@
+#!/usr/bin/perl -w
+# This Irssi script automatically check incoming http/https links
+# and replace it to archive one if it is MITMed.
+#---------------------------------------------------------------------
+use strict;
+use vars qw($VERSION %IRSSI);
+
+$VERSION = "20190501";
+
+%IRSSI = (
+    authors     => "Anonymous",
+    contact     => 'nobody@cloudflare-tor.nab',
+    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 ( $min_url_length, $send_to_channel, $debug, $channel_list );
+
+sub setuphandler {
+    $send_to_channel = 1;
+    $channel_list    = '';
+    my $old_min_url_length = $min_url_length;
+    $min_url_length = 0;
+    my $old_debug = $debug;
+    $debug = 0;
+}
+
+sub GotUrl {
+    my ( $server, $data, $nick, $addr, $target ) = @_;
+    if ( !$server || !$server->{connected} ) {
+        Irssi::print("Not connected to server");
+        return;
+    }
+    $data =~ s/^\s+//;
+    $data =~ s/\s+$//;
+    my @urls = ();
+    my ( $url, $a, $return, $char, $ch, $result, $choice ) = "";
+    my $same    = 0;
+    my $sitewas = "t";
+    my @chars   = ();
+    return unless ( ( $data =~ /\bhttp\:/ ) || ( $data =~ /\bhttps\:/ ) );
+    deb("$target triggered GotUrl() with url: $data");
+
+    foreach ( split( /\s/, $data ) ) {
+        if ( ( $_ =~ /^http\:/ ) || ( $_ =~ /^https\:/ ) ) {
+            foreach $a (@urls) {
+                if ( $_ eq $a ) {
+                    $same = 1;
+                    next;
+                }
+            }
+            if ( $same == 0 ) {
+                $same = 0;
+                push( @urls, $_ );
+            }
+        }
+    }
+    foreach (@urls) {
+        @chars = split( //, $_ );
+        foreach $char (@chars) {
+            if ( $char !~ /[A-Za-z0-9]/ ) {
+                $ch = sprintf( "%%%02x", ord($char) );
+                $result .= $ch;
+            }
+            else {
+                $result .= $char;
+            }
+        }
+        $choice = 'searxesmitmdb';
+        deb("mitmtest(\$server, $target, $result)");
+        mitmtest( $server, $target, $result );
+    }
+    return;
+}
+
+sub mitmtest {
+    my ( $server, $chan, $longurl ) = @_;
+    my ($fqdn) = $longurl =~ m!(https?://[^:/]+)!;
+    my ( $junk, $fqdn ) = split( /\/\//, $fqdn, 2 );
+    my $url = 'https://searxes.danwin1210.me/collab/open/ismitm.php?f=' . $fqdn;
+    deb("getting url:($url)");
+    my $browser = LWP::UserAgent->new;
+    $browser->agent("cloudflare cflare_alt.pl");
+    my $response    = $browser->get($url);
+    my $scanned_url = $response->content;
+## if the array[1] is true => it is MITM
+    if ( $scanned_url == '[true,true]' ) {
+        $scanned_url = 'https://web.archive.org/web/' . $longurl;
+    }
+    else {
+        $scanned_url = $longurl;
+    }
+    if ( $response->is_success ) {
+        if ( $send_to_channel == 1 ) {
+            $server->command("msg $chan $scanned_url");
+        }
+        else {
+            $server->print( "$chan", "$scanned_url", MSGLEVEL_CLIENTCRAP );
+        }
+    }
+    else {
+        deb("ERROR: service is down or not pingable");
+    }
+}
+
+sub deb($) {
+    Irssi::print(shift) if ( $debug == 1 );
+}
+
+setuphandler();
+Irssi::signal_add( "setup changed", "setuphandler" );
+Irssi::signal_add_last( "message public", "GotUrl" );
+Irssi::signal_add_last( "ctcp action",    "GotUrl" );