html/cgi-bin/connections.cgi

   1 #!/usr/bin/perl
   2 #
   3 # (c) 2001 Jack Beglinger <jackb_guppy@yahoo.com>
   4 #
   5 # (c) 2003 Dave Roberts <countzerouk@hotmail.com> - colour coded netfilter/iptables rewrite for 1.3
   6 #
   7 # (c) 2006 Franck - add sorting+filtering capability
   8 #
   9 # (c) 2006 Peter Schälchli -inetwork (bug)
  10 #
  11
  12 # Setup GREEN, ORANGE, IPFIRE, VPN CIDR networks, masklengths and colours only once
  13
  14 my @network=();
  15 my @masklen=();
  16 my @colour=();
  17
  18 use Net::IPv4Addr qw( :all );
  19
  20 use strict;
  21
  22 # enable only the following on debugging purpose
  23 #use warnings;
  24 use CGI::Carp 'fatalsToBrowser';
  25
  26 require '/var/ipfire/general-functions.pl';
  27 require "${General::swroot}/lang.pl";
  28 require "${General::swroot}/header.pl";
  29
  30 #workaround to suppress a warning when a variable is used only once
  31 my @dummy = ( ${Header::table1colour} );
  32 undef (@dummy);
  33
  34 # Read various files
  35
  36 my %netsettings=();
  37 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  38
  39 open (ACTIVE, 'iptstate -1rbt |') or die 'Unable to open ip_conntrack';
  40 my @active = <ACTIVE>;
  41 close (ACTIVE);
  42
  43 my @vpn = ('none');
  44 #open (ACTIVE, "/proc/net/ipsec_eroute") and @vpn = <ACTIVE>;
  45 #close (ACTIVE);
  46
  47 my $aliasfile = "${General::swroot}/ethernet/aliases";
  48 open(ALIASES, $aliasfile) or die 'Unable to open aliases file.';
  49 my @aliases = <ALIASES>;
  50 close(ALIASES);
  51
  52 # Add Green Firewall Interface
  53 push(@network, $netsettings{'GREEN_ADDRESS'});
  54 push(@masklen, "255.255.255.255" );
  55 push(@colour, ${Header::colourfw} );
  56
  57 # Add Green Network to Array
  58 push(@network, $netsettings{'GREEN_NETADDRESS'});
  59 push(@masklen, $netsettings{'GREEN_NETMASK'} );
  60 push(@colour, ${Header::colourgreen} );
  61
  62 # Add Green Routes to Array
  63 my @routes = `/sbin/route -n | /bin/grep $netsettings{'GREEN_DEV'}`;
  64 foreach my $route (@routes) {
  65         chomp($route);
  66         my @temp = split(/[\t ]+/, $route);
  67         push(@network, $temp[0]);
  68         push(@masklen, $temp[2]);
  69         push(@colour, ${Header::colourgreen} );
  70 }
  71
  72 # Add Firewall Localhost 127.0.0.1
  73 push(@network, '127.0.0.1');
  74 push(@masklen, '255.255.255.255' );
  75 push(@colour, ${Header::colourfw} );
  76
  77 # Add Orange Network
  78 if ($netsettings{'ORANGE_DEV'}) {
  79         push(@network, $netsettings{'ORANGE_NETADDRESS'});
  80         push(@masklen, $netsettings{'ORANGE_NETMASK'} );
  81         push(@colour, ${Header::colourorange} );
  82         # Add Orange Routes to Array
  83         @routes = `/sbin/route -n | /bin/grep $netsettings{'ORANGE_DEV'}`;
  84         foreach my $route (@routes) {
  85                   chomp($route);
  86                 my @temp = split(/[\t ]+/, $route);
  87                 push(@network, $temp[0]);
  88                 push(@masklen, $temp[2]);
  89                 push(@colour, ${Header::colourorange} );
  90         }
  91 }
  92
  93 # Add Blue Firewall Interface
  94 push(@network, $netsettings{'BLUE_ADDRESS'});
  95 push(@masklen, "255.255.255.255" );
  96 push(@colour, ${Header::colourfw} );
  97
  98 # Add Blue Network
  99 if ($netsettings{'BLUE_DEV'}) {
 100         push(@network, $netsettings{'BLUE_NETADDRESS'});
 101         push(@masklen, $netsettings{'BLUE_NETMASK'} );
 102         push(@colour, ${Header::colourblue} );
 103         # Add Blue Routes to Array
 104         @routes = `/sbin/route -n | /bin/grep $netsettings{'BLUE_DEV'}`;
 105         foreach my $route (@routes) {
 106                   chomp($route);
 107                 my @temp = split(/[\t ]+/, $route);
 108                 push(@network, $temp[0]);
 109                 push(@masklen, $temp[2]);
 110                 push(@colour, ${Header::colourblue} );
 111         }
 112 }
 113
 114 # Add OpenVPN net and RED/BLUE/ORANGE entry (when appropriate)
 115 if (-e "${General::swroot}/ovpn/settings") {
 116     my %ovpnsettings = ();
 117     &General::readhash("${General::swroot}/ovpn/settings", \%ovpnsettings);
 118     my @tempovpnsubnet = split("\/",$ovpnsettings{'DOVPN_SUBNET'});
 119
 120     # add OpenVPN net
 121                 push(@network, $tempovpnsubnet[0]);
 122                 push(@masklen, $tempovpnsubnet[1]);
 123                 push(@colour, ${Header::colourovpn} );
 124
 125     if ( ($ovpnsettings{'ENABLED'} eq 'on') && open(IP, "${General::swroot}/red/local-ipaddress") ) {
 126       # add RED:port / proto
 127                   my $redip = <IP>;
 128                   close(IP);
 129                   chomp $redip;
 130                   push(@network, $redip );
 131                   push(@masklen, '255.255.255.255' );
 132                   push(@colour, ${Header::colourovpn} );
 133     }
 134     if ( ($ovpnsettings{'ENABLED_BLUE'} eq 'on') && $netsettings{'BLUE_DEV'} ) {
 135       # add BLUE:port / proto
 136             push(@network, $netsettings{'BLUE_ADDRESS'} );
 137             push(@masklen, '255.255.255.255' );
 138                   push(@colour, ${Header::colourovpn} );
 139     }
 140     if ( ($ovpnsettings{'ENABLED_ORANGE'} eq 'on') && $netsettings{'ORANGE_DEV'} ) {
 141       # add ORANGE:port / proto
 142             push(@network, $netsettings{'ORANGE_ADDRESS'} );
 143             push(@masklen, '255.255.255.255' );
 144                   push(@colour, ${Header::colourovpn} );
 145     }
 146 }
 147
 148 # Add STATIC RED aliases
 149 if ($netsettings{'RED_DEV'}) {
 150         # We have a RED eth iface
 151         if ($netsettings{'RED_TYPE'} eq 'STATIC') {
 152                 # We have a STATIC RED eth iface
 153                 foreach my $line (@aliases)
 154                 {
 155                         chomp($line);
 156                         my @temp = split(/\,/,$line);
 157                         if ( $temp[0] ) {
 158                                 push(@network, $temp[0]);
 159                                 push(@masklen, $netsettings{'RED_NETMASK'} );
 160                                 push(@colour, ${Header::colourfw} );
 161                         }
 162                 }
 163         }
 164 }
 165
 166 # Add VPNs
 167 if ( $vpn[0] ne 'none' ) {
 168         foreach my $line (@vpn) {
 169                 my @temp = split(/[\t ]+/,$line);
 170                 my @temp1 = split(/[\/:]+/,$temp[3]);
 171                 push(@network, $temp1[0]);
 172                 push(@masklen, ipv4_cidr2msk($temp1[1]));
 173                 push(@colour, ${Header::colourvpn} );
 174         }
 175 }
 176 if (open(IP, "${General::swroot}/red/local-ipaddress")) {
 177         my $redip = <IP>;
 178         close(IP);
 179         chomp $redip;
 180         push(@network, $redip);
 181         push(@masklen, '255.255.255.255' );
 182         push(@colour, ${Header::colourfw} );
 183 }
 184
 185
 186 #Establish simple filtering&sorting boxes on top of table
 187
 188 our %cgiparams;
 189 &Header::getcgihash(\%cgiparams);
 190
 191 my @list_proto = ($Lang::tr{'all'}, 'icmp', 'udp', 'tcp');
 192 my @list_state = ($Lang::tr{'all'}, 'SYN_SENT', 'SYN_RECV', 'ESTABLISHED', 'FIN_WAIT',
 193                     'CLOSE_WAIT', 'LAST_ACK', 'TIME_WAIT', 'CLOSE', 'LISTEN');
 194 my @list_mark = ($Lang::tr{'all'}, '[ASSURED]', '[UNREPLIED]');
 195 my @list_sort = ('orgsip','protocol', 'expires', 'status', 'orgdip', 'orgsp',
 196                     'orgdp', 'exsip', 'exdip', 'exsp', 'exdp', 'marked');
 197
 198 # init or silently correct unknown value...
 199 if ( ! grep ( /^$cgiparams{'SEE_PROTO'}$/ , @list_proto )) { $cgiparams{'SEE_PROTO'} = $list_proto[0] };
 200 if ( ! grep ( /^$cgiparams{'SEE_STATE'}$/ , @list_state )) { $cgiparams{'SEE_STATE'} = $list_state[0] };
 201 if ( ($cgiparams{'SEE_MARK'} ne $Lang::tr{'all'}) &&    # ok the grep should work but it doesn't because of
 202      ($cgiparams{'SEE_MARK'} ne '[ASSURED]') &&         # the '[' & ']' interpreted as list separator.
 203      ($cgiparams{'SEE_MARK'} ne '[UNREPLIED]')          # So, explicitly enumerate items.
 204    )  { $cgiparams{'SEE_MARK'}  = $list_mark[0] };
 205 if ( ! grep ( /^$cgiparams{'SEE_SORT'}$/  , @list_sort ))  { $cgiparams{'SEE_SORT'}  = $list_sort[0] };
 206 # *.*.*.* or a valid IP
 207 if ( $cgiparams{'SEE_SRC'}  !~ /^(\*\.\*\.\*\.\*\.|\d+\.\d+\.\d+\.\d+)$/) {  $cgiparams{'SEE_SRC'} = '*.*.*.*' };
 208 if ( $cgiparams{'SEE_DEST'} !~ /^(\*\.\*\.\*\.\*\.|\d+\.\d+\.\d+\.\d+)$/) {  $cgiparams{'SEE_DEST'} = '*.*.*.*' };
 209
 210
 211 our %entries = ();      # will hold the lines analyzed correctly
 212 my $unknownlines = '';  # should be empty all the time...
 213 my $index = 0;          # just a counter to make unique entryies in entries
 214
 215 &Header::showhttpheaders();
 216 &Header::openpage($Lang::tr{'connections'}, 1, '');
 217 &Header::openbigbox('100%', 'left');
 218 &Header::openbox('100%', 'left', $Lang::tr{'connection tracking'});
 219
 220 # Build listbox objects
 221 my $menu_proto = &make_select ('SEE_PROTO', $cgiparams{'SEE_PROTO'}, @list_proto);
 222 my $menu_state = &make_select ('SEE_STATE', $cgiparams{'SEE_STATE'}, @list_state);
 223
 224 print <<END
 225 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 226 <table width='100%'>
 227 <tr><td align='center'><b>$Lang::tr{'legend'} : </b></td>
 228     <td align='center' bgcolor='${Header::colourgreen}'><b><font color='#FFFFFF'>$Lang::tr{'lan'}</font></b></td>
 229     <td align='center' bgcolor='${Header::colourred}'><b><font color='#FFFFFF'>$Lang::tr{'internet'}</font></b></td>
 230     <td align='center' bgcolor='${Header::colourorange}'><b><font color='#FFFFFF'>$Lang::tr{'dmz'}</font></b></td>
 231     <td align='center' bgcolor='${Header::colourblue}'><b><font color='#FFFFFF'>$Lang::tr{'wireless'}</font></b></td>
 232     <td align='center' bgcolor='${Header::colourfw}'><b><font color='#FFFFFF'>IPFire</font></b></td>
 233     <td align='center' bgcolor='${Header::colourvpn}'><b><font color='#FFFFFF'>$Lang::tr{'vpn'}</font></b></td>
 234     <td align='center' bgcolor='${Header::colourovpn}'><b><font color='#FFFFFF'>$Lang::tr{'OpenVPN'}</font></b></td>
 235 </tr>
 236 </table>
 237 <br />
 238 <table width='100%'>
 239 <tr><td align='center'><font size=2>$Lang::tr{'source ip and port'}</font></td>
 240                 <td>&nbsp;</td>
 241                 <td align='center'><font size=2>$Lang::tr{'dest ip and port'}</font></td>
 242                 <td>&nbsp;</td>
 243                 <td align='center'><font size=2>$Lang::tr{'protocol'}</font></td>
 244                 <td align='center'><font size=2>$Lang::tr{'connection'}<br></br>$Lang::tr{'status'}</font></td>
 245     <td align='center'><font size=2>$Lang::tr{'expires'}<br></br>($Lang::tr{'seconds'})</font></td>
 246
 247 </tr>
 248 <tr><td colspan='4'>&nbsp;</td>
 249                 <td align='center'>$menu_proto</td>
 250     <td align='center'>$menu_state</td>
 251     <td>&nbsp;</td>
 252 </tr>
 253 <tr>
 254     <td align='center' colspan='7'></td>
 255 </tr>
 256 <tr>
 257     <td align='center' colspan='7'><input type='submit' value="$Lang::tr{'update'}" /></td>
 258 </tr>
 259
 260 END
 261 ;
 262
 263 my $i=0;
 264 foreach my $line (@active) {
 265     $i++;
 266     if ($i < 3) {
 267                         next;
 268     }
 269     chomp($line);
 270     my @temp = split(' ',$line);
 271
 272     my ($sip, $sport) = split(':', $temp[0]);
 273     my ($dip, $dport) = split(':', $temp[1]);
 274     my $proto = $temp[2];
 275     my $state = $temp[3];
 276     my $ttl = $temp[4];
 277
 278     next if( !(
 279                         (($cgiparams{'SEE_PROTO'}  eq $Lang::tr{'all'}) || ($proto  eq $cgiparams{'SEE_PROTO'} ))
 280                  && (($cgiparams{'SEE_STATE'}  eq $Lang::tr{'all'}) || ($state  eq $cgiparams{'SEE_STATE'} ))
 281                && (($cgiparams{'SEE_SRC'}    eq "*.*.*.*")        || ($sip    eq $cgiparams{'SEE_SRC'}   ))
 282                && (($cgiparams{'SEE_DEST'}   eq "*.*.*.*")        || ($dip    eq $cgiparams{'SEE_DEST'}  ))
 283               ));
 284
 285     if (($proto eq 'udp') && ($ttl eq '')) {
 286                         $ttl = $state;
 287                         $state = '&nbsp;';
 288     }
 289
 290     my $sipcol = ipcolour($sip);
 291     my $dipcol = ipcolour($dip);
 292
 293     my $sserv = '';
 294     if ($sport < 1024) {
 295         $sserv = uc(getservbyport($sport, lc($proto)));
 296         if ($sserv ne '') {
 297             $sserv = "&nbsp;($sserv)";
 298         }
 299     }
 300
 301     my $dserv = '';
 302     if ($dport < 1024) {
 303         $dserv = uc(getservbyport($dport, lc($proto)));
 304         if ($dserv ne '') {
 305             $dserv = "&nbsp;($dserv)";
 306         }
 307     }
 308
 309     print <<END
 310     <tr >
 311       <td align='center' bgcolor='$sipcol'>
 312         <a href='/cgi-bin/ipinfo.cgi?ip=$sip'>
 313           <font color='#FFFFFF'>$sip</font>
 314         </a>
 315       </td>
 316       <td align='center' bgcolor='$sipcol'>
 317         <a href='http://isc.sans.org/port_details.php?port=$sport' target='top'>
 318           <font color='#FFFFFF'>$sport$sserv</font>
 319         </a>
 320       </td>
 321       <td align='center' bgcolor='$dipcol'>
 322         <a href='/cgi-bin/ipinfo.cgi?ip=$dip'>
 323           <font color='#FFFFFF'>$dip</font>
 324         </a>
 325       </td>
 326       <td align='center' bgcolor='$dipcol'>
 327         <a href='http://isc.sans.org/port_details.php?port=$dport' target='top'>
 328           <font color='#FFFFFF'>$dport$dserv</font>
 329         </a>
 330       </td>
 331       <td align='center'>$proto</td>
 332       <td align='center'>$state</td>
 333       <td align='center'>$ttl</td>
 334     </tr>
 335 END
 336 ;
 337 }
 338
 339 print "</table></form>";
 340
 341 &Header::closebox();
 342 &Header::closebigbox();
 343 &Header::closepage();
 344
 345 sub ipcolour($) {
 346         my $id = 0;
 347         my $line;
 348         my $colour = ${Header::colourred};
 349         my ($ip) = $_[0];
 350         my $found = 0;
 351         foreach $line (@network) {
 352                                         if ($network[$id] eq '') {
 353                                                 $id++;
 354                                         } else {
 355                                                 if (!$found && ipv4_in_network( $network[$id] , $masklen[$id], $ip) ) {
 356                                                         $found = 1;
 357                                                         $colour = $colour[$id];
 358                                                 }
 359                                                 $id++;
 360                                         }
 361         }
 362         return $colour
 363 }
 364
 365 # Create a string containing a complete SELECT html object
 366 # param1: name
 367 # param2: current value selected
 368 # param3: field list
 369 sub make_select ($,$,$) {
 370         my $select_name = shift;
 371         my $selected    = shift;
 372         my $select = "<select name='$select_name'>";
 373
 374         foreach my $value (@_) {
 375                     my $check = $selected eq $value ? "selected='selected'" : '';
 376                     $select .= "<option $check value='$value'>$value</option>";
 377         }
 378         $select .= "</select>";
 379         return $select;
 380 }
 381
 382 # Build a list of IP obtained from the %entries hash
 383 # param1: IP field name
 384 sub get_known_ips ($) {
 385         my $field = shift;
 386         my $qs = $cgiparams{'SEE_SORT'};        # switch the sort order
 387         $cgiparams{'SEE_SORT'} = $field;
 388
 389         my @liste=('*.*.*.*');
 390         foreach my $entry ( sort sort_entries keys %entries) {
 391                     push (@liste, $entries{$entry}->{$field}) if (! grep (/^$entries{$entry}->{$field}$/,@liste) );
 392         }
 393
 394         $cgiparams{'SEE_SORT'} = $qs;   #restore sort order
 395         return @liste;
 396 }
 397
 398 # Used to sort the table containing the lines displayed.
 399 sub sort_entries { #Reverse is not implemented
 400         my $qs=$cgiparams{'SEE_SORT'};
 401         if ($qs =~ /orgsip|orgdip|exsip|exdip/) {
 402                 my @a = split(/\./,$entries{$a}->{$qs});
 403                 my @b = split(/\./,$entries{$b}->{$qs});
 404                 ($a[0]<=>$b[0]) ||
 405                 ($a[1]<=>$b[1]) ||
 406                 ($a[2]<=>$b[2]) ||
 407                 ($a[3]<=>$b[3]);
 408         } elsif ($qs =~ /expire|orgsp|orgdp|exsp|exdp/) {
 409                     $entries{$a}->{$qs} <=> $entries{$b}->{$qs};
 410         } else {
 411                     $entries{$a}->{$qs} cmp $entries{$b}->{$qs};
 412         }
 413 }
 414
 415 1;