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