html/cgi-bin/connections.cgi

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2007  Michael Tremer & Christian Schmidt                      #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 my @network=();
  23 my @masklen=();
  24 my @colour=();
  25
  26 use Net::IPv4Addr qw( :all );
  27
  28 use strict;
  29
  30 # enable only the following on debugging purpose
  31 #use warnings;
  32 #use CGI::Carp 'fatalsToBrowser';
  33
  34 require '/var/ipfire/general-functions.pl';
  35 require "${General::swroot}/lang.pl";
  36 require "${General::swroot}/header.pl";
  37
  38 #workaround to suppress a warning when a variable is used only once
  39 my @dummy = ( ${Header::table1colour} );
  40 undef (@dummy);
  41
  42 # Read various files
  43
  44 my %netsettings=();
  45 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  46
  47 open (ACTIVE, 'iptstate -1rbt |') or die 'Unable to open ip_conntrack';
  48 my @active = <ACTIVE>;
  49 close (ACTIVE);
  50
  51 my @vpn = ` route -n | grep ipsec | awk '{ print \$1" "\$3}'`;
  52   foreach my $route (@vpn) {
  53                 chomp($route);
  54                 my @temp = split(/[\t ]+/, $route);
  55                 push(@network, $temp[0]);
  56                 push(@masklen, $temp[1]);
  57                 push(@colour, ${Header::colourvpn} );
  58         }
  59
  60 my $aliasfile = "${General::swroot}/ethernet/aliases";
  61 open(ALIASES, $aliasfile) or die 'Unable to open aliases file.';
  62 my @aliases = <ALIASES>;
  63 close(ALIASES);
  64
  65 # Add Green Firewall Interface
  66 push(@network, $netsettings{'GREEN_ADDRESS'});
  67 push(@masklen, "255.255.255.255" );
  68 push(@colour, ${Header::colourfw} );
  69
  70 # Add Green Network to Array
  71 push(@network, $netsettings{'GREEN_NETADDRESS'});
  72 push(@masklen, $netsettings{'GREEN_NETMASK'} );
  73 push(@colour, ${Header::colourgreen} );
  74
  75 # Add Green Routes to Array
  76 my @routes = `/sbin/route -n | /bin/grep $netsettings{'GREEN_DEV'}`;
  77 foreach my $route (@routes) {
  78         chomp($route);
  79         my @temp = split(/[\t ]+/, $route);
  80         push(@network, $temp[0]);
  81         push(@masklen, $temp[2]);
  82         push(@colour, ${Header::colourgreen} );
  83 }
  84
  85 # Add Firewall Localhost 127.0.0.1
  86 push(@network, '127.0.0.1');
  87 push(@masklen, '255.255.255.255' );
  88 push(@colour, ${Header::colourfw} );
  89
  90 # Add Orange Network
  91 if ($netsettings{'ORANGE_DEV'}) {
  92         push(@network, $netsettings{'ORANGE_NETADDRESS'});
  93         push(@masklen, $netsettings{'ORANGE_NETMASK'} );
  94         push(@colour, ${Header::colourorange} );
  95         # Add Orange Routes to Array
  96         @routes = `/sbin/route -n | /bin/grep $netsettings{'ORANGE_DEV'}`;
  97         foreach my $route (@routes) {
  98                   chomp($route);
  99                 my @temp = split(/[\t ]+/, $route);
 100                 push(@network, $temp[0]);
 101                 push(@masklen, $temp[2]);
 102                 push(@colour, ${Header::colourorange} );
 103         }
 104 }
 105
 106 # Add Blue Firewall Interface
 107 push(@network, $netsettings{'BLUE_ADDRESS'});
 108 push(@masklen, "255.255.255.255" );
 109 push(@colour, ${Header::colourfw} );
 110
 111 # Add Blue Network
 112 if ($netsettings{'BLUE_DEV'}) {
 113         push(@network, $netsettings{'BLUE_NETADDRESS'});
 114         push(@masklen, $netsettings{'BLUE_NETMASK'} );
 115         push(@colour, ${Header::colourblue} );
 116         # Add Blue Routes to Array
 117         @routes = `/sbin/route -n | /bin/grep $netsettings{'BLUE_DEV'}`;
 118         foreach my $route (@routes) {
 119                   chomp($route);
 120                 my @temp = split(/[\t ]+/, $route);
 121                 push(@network, $temp[0]);
 122                 push(@masklen, $temp[2]);
 123                 push(@colour, ${Header::colourblue} );
 124         }
 125 }
 126
 127 # Add OpenVPN net and RED/BLUE/ORANGE entry (when appropriate)
 128 if (-e "${General::swroot}/ovpn/settings") {
 129     my %ovpnsettings = ();
 130     &General::readhash("${General::swroot}/ovpn/settings", \%ovpnsettings);
 131     my @tempovpnsubnet = split("\/",$ovpnsettings{'DOVPN_SUBNET'});
 132
 133     # add OpenVPN net
 134                 push(@network, $tempovpnsubnet[0]);
 135                 push(@masklen, $tempovpnsubnet[1]);
 136                 push(@colour, ${Header::colourovpn} );
 137
 138
 139     if ( ($ovpnsettings{'ENABLED_BLUE'} eq 'on') && $netsettings{'BLUE_DEV'} ) {
 140       # add BLUE:port / proto
 141             push(@network, $netsettings{'BLUE_ADDRESS'} );
 142             push(@masklen, '255.255.255.255' );
 143                   push(@colour, ${Header::colourovpn} );
 144     }
 145     if ( ($ovpnsettings{'ENABLED_ORANGE'} eq 'on') && $netsettings{'ORANGE_DEV'} ) {
 146       # add ORANGE:port / proto
 147             push(@network, $netsettings{'ORANGE_ADDRESS'} );
 148             push(@masklen, '255.255.255.255' );
 149                   push(@colour, ${Header::colourovpn} );
 150     }
 151 }
 152
 153 # Add STATIC RED aliases
 154 if ($netsettings{'RED_DEV'}) {
 155         # We have a RED eth iface
 156         if ($netsettings{'RED_TYPE'} eq 'STATIC') {
 157                 # We have a STATIC RED eth iface
 158                 foreach my $line (@aliases)
 159                 {
 160                         chomp($line);
 161                         my @temp = split(/\,/,$line);
 162                         if ( $temp[0] ) {
 163                                 push(@network, $temp[0]);
 164                                 push(@masklen, $netsettings{'RED_NETMASK'} );
 165                                 push(@colour, ${Header::colourfw} );
 166                         }
 167                 }
 168         }
 169 }
 170
 171 # Add VPNs
 172 if ( $vpn[0] ne 'none' ) {
 173         foreach my $line (@vpn) {
 174                 my @temp = split(/[\t ]+/,$line);
 175                 my @temp1 = split(/[\/:]+/,$temp[3]);
 176                 push(@network, $temp1[0]);
 177                 push(@masklen, ipv4_cidr2msk($temp1[1]));
 178                 push(@colour, ${Header::colourvpn} );
 179         }
 180 }
 181 if (open(IP, "${General::swroot}/red/local-ipaddress")) {
 182         my $redip = <IP>;
 183         close(IP);
 184         chomp $redip;
 185         push(@network, $redip);
 186         push(@masklen, '255.255.255.255' );
 187         push(@colour, ${Header::colourfw} );
 188 }
 189
 190
 191 #Establish simple filtering&sorting boxes on top of table
 192
 193 our %cgiparams;
 194 &Header::getcgihash(\%cgiparams);
 195
 196 my @list_proto = ($Lang::tr{'all'}, 'icmp', 'udp', 'tcp');
 197 my @list_state = ($Lang::tr{'all'}, 'SYN_SENT', 'SYN_RECV', 'ESTABLISHED', 'FIN_WAIT',
 198                     'CLOSE_WAIT', 'LAST_ACK', 'TIME_WAIT', 'CLOSE', 'LISTEN');
 199 my @list_mark = ($Lang::tr{'all'}, '[ASSURED]', '[UNREPLIED]');
 200 my @list_sort = ('orgsip','protocol', 'expires', 'status', 'orgdip', 'orgsp',
 201                     'orgdp', 'exsip', 'exdip', 'exsp', 'exdp', 'marked');
 202
 203 # init or silently correct unknown value...
 204 if ( ! grep ( /^$cgiparams{'SEE_PROTO'}$/ , @list_proto )) { $cgiparams{'SEE_PROTO'} = $list_proto[0] };
 205 if ( ! grep ( /^$cgiparams{'SEE_STATE'}$/ , @list_state )) { $cgiparams{'SEE_STATE'} = $list_state[0] };
 206 if ( ($cgiparams{'SEE_MARK'} ne $Lang::tr{'all'}) &&    # ok the grep should work but it doesn't because of
 207      ($cgiparams{'SEE_MARK'} ne '[ASSURED]') &&         # the '[' & ']' interpreted as list separator.
 208      ($cgiparams{'SEE_MARK'} ne '[UNREPLIED]')          # So, explicitly enumerate items.
 209    )  { $cgiparams{'SEE_MARK'}  = $list_mark[0] };
 210 if ( ! grep ( /^$cgiparams{'SEE_SORT'}$/  , @list_sort ))  { $cgiparams{'SEE_SORT'}  = $list_sort[0] };
 211 # *.*.*.* or a valid IP
 212 if ( $cgiparams{'SEE_SRC'}  !~ /^(\*\.\*\.\*\.\*\.|\d+\.\d+\.\d+\.\d+)$/) {  $cgiparams{'SEE_SRC'} = '*.*.*.*' };
 213 if ( $cgiparams{'SEE_DEST'} !~ /^(\*\.\*\.\*\.\*\.|\d+\.\d+\.\d+\.\d+)$/) {  $cgiparams{'SEE_DEST'} = '*.*.*.*' };
 214
 215
 216 our %entries = ();      # will hold the lines analyzed correctly
 217 my $unknownlines = '';  # should be empty all the time...
 218 my $index = 0;          # just a counter to make unique entryies in entries
 219
 220 &Header::showhttpheaders();
 221 &Header::openpage($Lang::tr{'connections'}, 1, '');
 222 &Header::openbigbox('100%', 'left');
 223 &Header::openbox('100%', 'left', $Lang::tr{'connection tracking'});
 224
 225 # Build listbox objects
 226 my $menu_proto = &make_select ('SEE_PROTO', $cgiparams{'SEE_PROTO'}, @list_proto);
 227 my $menu_state = &make_select ('SEE_STATE', $cgiparams{'SEE_STATE'}, @list_state);
 228
 229 print <<END
 230 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 231 <table width='100%'>
 232 <tr><td align='center'><b>$Lang::tr{'legend'} : </b></td>
 233     <td align='center' bgcolor='${Header::colourgreen}'><b><font color='#FFFFFF'>$Lang::tr{'lan'}</font></b></td>
 234     <td align='center' bgcolor='${Header::colourred}'><b><font color='#FFFFFF'>$Lang::tr{'internet'}</font></b></td>
 235     <td align='center' bgcolor='${Header::colourorange}'><b><font color='#FFFFFF'>$Lang::tr{'dmz'}</font></b></td>
 236     <td align='center' bgcolor='${Header::colourblue}'><b><font color='#FFFFFF'>$Lang::tr{'wireless'}</font></b></td>
 237     <td align='center' bgcolor='${Header::colourfw}'><b><font color='#FFFFFF'>IPFire</font></b></td>
 238     <td align='center' bgcolor='${Header::colourvpn}'><b><font color='#FFFFFF'>$Lang::tr{'vpn'}</font></b></td>
 239     <td align='center' bgcolor='${Header::colourovpn}'><b><font color='#FFFFFF'>$Lang::tr{'OpenVPN'}</font></b></td>
 240 </tr>
 241 </table>
 242 <br />
 243 <table width='100%'>
 244 <tr><td align='center'><font size=2>$Lang::tr{'source ip and port'}</font></td>
 245                 <td>&nbsp;</td>
 246                 <td align='center'><font size=2>$Lang::tr{'dest ip and port'}</font></td>
 247                 <td>&nbsp;</td>
 248                 <td align='center'><font size=2>$Lang::tr{'protocol'}</font></td>
 249                 <td align='center'><font size=2>$Lang::tr{'connection'}<br></br>$Lang::tr{'status'}</font></td>
 250     <td align='center'><font size=2>$Lang::tr{'expires'}<br></br>($Lang::tr{'seconds'})</font></td>
 251
 252 </tr>
 253 <tr><td colspan='4'>&nbsp;</td>
 254                 <td align='center'>$menu_proto</td>
 255     <td align='center'>$menu_state</td>
 256     <td>&nbsp;</td>
 257 </tr>
 258 <tr>
 259     <td align='center' colspan='7'></td>
 260 </tr>
 261 <tr>
 262     <td align='center' colspan='7'><input type='submit' value="$Lang::tr{'update'}" /></td>
 263 </tr>
 264
 265 END
 266 ;
 267
 268 my $i=0;
 269 foreach my $line (@active) {
 270     $i++;
 271     if ($i < 3) {
 272                         next;
 273     }
 274     chomp($line);
 275     my @temp = split(' ',$line);
 276
 277     my ($sip, $sport) = split(':', $temp[0]);
 278     my ($dip, $dport) = split(':', $temp[1]);
 279     my $proto = $temp[2];
 280     my $state; my $ttl;
 281     if ( $proto eq "esp" ){$state = "";$ttl = $temp[3];}
 282     elsif ( $proto eq "icmp" ){$state = "";$ttl = $temp[4];}
 283     else{$state = $temp[3];$ttl = $temp[4];}
 284
 285     next if( !(
 286                         (($cgiparams{'SEE_PROTO'}  eq $Lang::tr{'all'}) || ($proto  eq $cgiparams{'SEE_PROTO'} ))
 287                  && (($cgiparams{'SEE_STATE'}  eq $Lang::tr{'all'}) || ($state  eq $cgiparams{'SEE_STATE'} ))
 288                && (($cgiparams{'SEE_SRC'}    eq "*.*.*.*")        || ($sip    eq $cgiparams{'SEE_SRC'}   ))
 289                && (($cgiparams{'SEE_DEST'}   eq "*.*.*.*")        || ($dip    eq $cgiparams{'SEE_DEST'}  ))
 290               ));
 291
 292     if (($proto eq 'udp') && ($ttl eq '')) {
 293                         $ttl = $state;
 294                         $state = '&nbsp;';
 295     }
 296
 297     my $sipcol = ipcolour($sip);
 298     my $dipcol = ipcolour($dip);
 299
 300     my $sserv = '';
 301     if ($sport < 1024) {
 302         $sserv = uc(getservbyport($sport, lc($proto)));
 303         if ($sserv ne '') {
 304             $sserv = "&nbsp;($sserv)";
 305         }
 306     }
 307
 308     my $dserv = '';
 309     if ($dport < 1024) {
 310         $dserv = uc(getservbyport($dport, lc($proto)));
 311         if ($dserv ne '') {
 312             $dserv = "&nbsp;($dserv)";
 313         }
 314     }
 315
 316     print <<END
 317     <tr >
 318       <td align='center' bgcolor='$sipcol'>
 319         <a href='/cgi-bin/ipinfo.cgi?ip=$sip'>
 320           <font color='#FFFFFF'>$sip</font>
 321         </a>
 322       </td>
 323       <td align='center' bgcolor='$sipcol'>
 324         <a href='http://isc.sans.org/port_details.php?port=$sport' target='top'>
 325           <font color='#FFFFFF'>$sport$sserv</font>
 326         </a>
 327       </td>
 328       <td align='center' bgcolor='$dipcol'>
 329         <a href='/cgi-bin/ipinfo.cgi?ip=$dip'>
 330           <font color='#FFFFFF'>$dip</font>
 331         </a>
 332       </td>
 333       <td align='center' bgcolor='$dipcol'>
 334         <a href='http://isc.sans.org/port_details.php?port=$dport' target='top'>
 335           <font color='#FFFFFF'>$dport$dserv</font>
 336         </a>
 337       </td>
 338       <td align='center'>$proto</td>
 339       <td align='center'>$state</td>
 340       <td align='center'>$ttl</td>
 341     </tr>
 342 END
 343 ;
 344 }
 345
 346 print "</table></form>";
 347
 348 &Header::closebox();
 349 &Header::closebigbox();
 350 &Header::closepage();
 351
 352 sub ipcolour($) {
 353         my $id = 0;
 354         my $line;
 355         my $colour = ${Header::colourred};
 356         my ($ip) = $_[0];
 357         my $found = 0;
 358         foreach $line (@network) {
 359                                         if ($network[$id] eq '') {
 360                                                 $id++;
 361                                         } else {
 362                                                 if (!$found && ipv4_in_network( $network[$id] , $masklen[$id], $ip) ) {
 363                                                         $found = 1;
 364                                                         $colour = $colour[$id];
 365                                                 }
 366                                                 $id++;
 367                                         }
 368         }
 369         return $colour
 370 }
 371
 372 # Create a string containing a complete SELECT html object
 373 # param1: name
 374 # param2: current value selected
 375 # param3: field list
 376 sub make_select ($,$,$) {
 377         my $select_name = shift;
 378         my $selected    = shift;
 379         my $select = "<select name='$select_name'>";
 380
 381         foreach my $value (@_) {
 382                     my $check = $selected eq $value ? "selected='selected'" : '';
 383                     $select .= "<option $check value='$value'>$value</option>";
 384         }
 385         $select .= "</select>";
 386         return $select;
 387 }
 388
 389 # Build a list of IP obtained from the %entries hash
 390 # param1: IP field name
 391 sub get_known_ips ($) {
 392         my $field = shift;
 393         my $qs = $cgiparams{'SEE_SORT'};        # switch the sort order
 394         $cgiparams{'SEE_SORT'} = $field;
 395
 396         my @liste=('*.*.*.*');
 397         foreach my $entry ( sort sort_entries keys %entries) {
 398                     push (@liste, $entries{$entry}->{$field}) if (! grep (/^$entries{$entry}->{$field}$/,@liste) );
 399         }
 400
 401         $cgiparams{'SEE_SORT'} = $qs;   #restore sort order
 402         return @liste;
 403 }
 404
 405 # Used to sort the table containing the lines displayed.
 406 sub sort_entries { #Reverse is not implemented
 407         my $qs=$cgiparams{'SEE_SORT'};
 408         if ($qs =~ /orgsip|orgdip|exsip|exdip/) {
 409                 my @a = split(/\./,$entries{$a}->{$qs});
 410                 my @b = split(/\./,$entries{$b}->{$qs});
 411                 ($a[0]<=>$b[0]) ||
 412                 ($a[1]<=>$b[1]) ||
 413                 ($a[2]<=>$b[2]) ||
 414                 ($a[3]<=>$b[3]);
 415         } elsif ($qs =~ /expire|orgsp|orgdp|exsp|exdp/) {
 416                     $entries{$a}->{$qs} <=> $entries{$b}->{$qs};
 417         } else {
 418                     $entries{$a}->{$qs} cmp $entries{$b}->{$qs};
 419         }
 420 }
 421
 422 1;