]>
git.ipfire.org Git - ipfire-2.x.git/blob - html/cgi-bin/ids.cgi
2 ###############################################################################
4 # IPFire.org - A linux based firewall #
5 # Copyright (C) 2007-2018 IPFire Team <info@ipfire.org> #
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. #
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. #
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/>. #
20 ###############################################################################
24 # enable only the following on debugging purpose
26 #use CGI::Carp 'fatalsToBrowser';
28 require '/var/ipfire/general-functions.pl';
29 require "${General::swroot}/lang.pl";
30 require "${General::swroot}/header.pl";
31 require "${General::swroot}/ids-functions.pl";
34 my %mainsettings = ();
38 my %rulesetsources = ();
43 # Read-in main settings, for language, theme and colors.
44 &General
::readhash
("${General::swroot}/main/settings", \
%mainsettings);
45 &General
::readhash
("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \
%color);
48 &General
::readhash
("${General::swroot}/ethernet/settings", \
%netsettings);
50 my $idsusedrulefilesfile = "$IDS::settingsdir/ids-used-rulefiles.conf";
53 &Header
::showhttpheaders
();
55 # Default settings for snort.
56 $snortsettings{'ENABLE_SNORT'} = 'off';
57 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
58 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
59 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
60 $snortsettings{'RULES'} = '';
61 $snortsettings{'OINKCODE'} = '';
64 &Header
::getcgihash
(\
%cgiparams);
66 # Check if any error has been stored.
67 if (-e
$IDS::storederrorfile
) {
68 # Open file to read in the stored error message.
69 open(FILE
, "<$IDS::storederrorfile") or die "Could not open $IDS::storederrorfile. $!\n";
71 # Read the stored error message.
72 $errormessage = <FILE
>;
77 # Delete the file, which is now not longer required.
78 unlink($IDS::storederrorfile
);
82 ## Grab all available snort rules and store them in the idsrules hash.
84 # Open snort rules directory and do a directory listing.
85 opendir(DIR
, $IDS::rulespath
) or die $!;
86 # Loop through the direcory.
87 while (my $file = readdir(DIR
)) {
90 next unless (-f
"$IDS::rulespath/$file");
93 next if (-z
"$IDS::rulespath/$file");
95 # Use a regular expression to find files ending in .rules
96 next unless ($file =~ m/\.rules$/);
98 # Ignore files which are not read-able.
99 next unless (-R
"$IDS::rulespath/$file");
101 # Call subfunction to read-in rulefile and add rules to
103 &readrulesfile
("$file");
108 # Gather used rulefiles.
110 # Check if the file for activated rulefiles is not empty.
111 if(-f
$idsusedrulefilesfile) {
112 # Open the file for used rulefile and read-in content.
113 open(FILE
, $idsusedrulefilesfile) or die "Could not open $idsusedrulefilesfile. $!\n";
121 # Loop through the array.
122 foreach my $line (@lines) {
127 next if ($line =~ /\#/);
130 next if ($line =~ /^\s*$/);
132 # Gather rule sid and message from the ruleline.
133 if ($line =~ /.*include \$RULE_PATH\/(.*)/) {
136 # Add the rulefile to the %idsrules hash.
137 $idsrules{$rulefile}{'Rulefile'}{'State'} = "on";
143 if ($cgiparams{'RULESET'} eq $Lang::tr
{'update'}) {
144 my $enabled_sids_file = "$IDS::settingsdir/oinkmaster-enabled-sids.conf";
145 my $disabled_sids_file = "$IDS::settingsdir/oinkmaster-disabled-sids.conf";
147 # Arrays to store sid which should be added to the corresponding files.
150 my @enabled_rulefiles;
152 # Loop through the hash of idsrules.
153 foreach my $rulefile(keys %idsrules) {
154 # Check if the rulefile is enabled.
155 if ($cgiparams{$rulefile} eq "on") {
156 # Add rulefile to the array of enabled rulefiles.
157 push(@enabled_rulefiles, $rulefile);
159 # Drop item from cgiparams hash.
160 delete $cgiparams{$rulefile};
164 # Loop through the hash of idsrules.
165 foreach my $rulefile (keys %idsrules) {
166 # Loop through the single rules of the rulefile.
167 foreach my $sid (keys %{$idsrules{$rulefile}}) {
168 # Skip the current sid if it is not numeric.
169 next unless ($sid =~ /\d+/ );
171 # Check if there exists a key in the cgiparams hash for this sid.
172 if (exists($cgiparams{$sid})) {
173 # Look if the rule is disabled.
174 if ($idsrules{$rulefile}{$sid}{'State'} eq "off") {
175 # Check if the state has been set to 'on'.
176 if ($cgiparams{$sid} eq "on") {
177 # Add the sid to the enabled_sids array.
178 push(@enabled_sids, $sid);
180 # Drop item from cgiparams hash.
181 delete $cgiparams{$rulefile}{$sid};
185 # Look if the rule is enabled.
186 if ($idsrules{$rulefile}{$sid}{'State'} eq "on") {
187 # Check if the state is 'on' and should be disabled.
188 # In this case there is no entry
189 # for the sid in the cgiparams hash.
190 # Add it to the disabled_sids array.
191 push(@disabled_sids, $sid);
193 # Drop item from cgiparams hash.
194 delete $cgiparams{$rulefile}{$sid};
200 # Open enabled sid's file for writing.
201 open(FILE
, ">$enabled_sids_file") or die "Could not write to $enabled_sids_file. $!\n";
203 # Write header to file.
204 print FILE
"#Autogenerated file. Any custom changes will be overwritten!\n";
206 # Check if the enabled_sids array contains any sid's.
208 # Loop through the array of enabled sids and write them to the file.
209 foreach my $sid (@enabled_sids) {
210 print FILE
"enablesid $sid\n";
214 # Close file after writing.
217 # Open disabled sid's file for writing.
218 open(FILE
, ">$disabled_sids_file") or die "Could not write to $disabled_sids_file. $!\n";
220 # Write header to file.
221 print FILE
"#Autogenerated file. Any custom changes will be overwritten!\n";
223 # Check if the enabled_sids array contains any sid's.
224 if (@disabled_sids) {
225 # Loop through the array of disabled sids and write them to the file.
226 foreach my $sid (@disabled_sids) {
227 print FILE
"disablesid $sid\n";
231 # Close file after writing.
234 # Open file for used rulefiles.
235 open (FILE
, ">$idsusedrulefilesfile") or die "Could not write to $idsusedrulefilesfile. $!\n";
237 # Write header to file.
238 print FILE
"#Autogenerated file. Any custom changes will be overwritten!\n";
240 # Check if the enabled_rulefiles array contains any entries.
241 if (@enabled_rulefiles) {
242 # Loop through the array of rulefiles which should be loaded and write the to the file.
243 foreach my $file (@enabled_rulefiles) {
244 print FILE
"include \$RULE_PATH/$file\n";
248 # Close file after writing.
251 # Lock the webpage and print message.
252 &working_notice
("$Lang::tr{'snort working'}");
254 # Call oinkmaster to alter the ruleset.
260 # Download new ruleset.
261 } elsif ($cgiparams{'RULESET'} eq $Lang::tr
{'download new ruleset'}) {
262 # Check if the red device is active.
263 unless (-e
"${General::swroot}/red/active") {
264 $errormessage = $Lang::tr
{'could not download latest updates'};
267 # Check if enought free disk space is availabe.
268 $errormessage = &IDS
::checkdiskspace
();
270 # Check if any errors happend.
271 unless ($errormessage) {
272 # Lock the webpage and print notice about downloading
274 &working_notice
("$Lang::tr{'snort working'}");
276 # Call subfunction to download the ruleset.
277 $errormessage = &IDS
::downloadruleset
();
279 # Check if the downloader returned an error.
281 # Call function to store the errormessage.
282 &IDS
::log_error
($errormessage);
284 # Preform a reload of the page.
287 # Call subfunction to launch oinkmaster.
290 # Perform a reload of the page.
294 # Save snort settings.
295 } elsif ($cgiparams{'SNORT'} eq $Lang::tr
{'save'}) {
296 # Prevent form name from been stored in conf file.
297 delete $cgiparams{'SNORT'};
299 # Check if an oinkcode has been provided.
300 if ($cgiparams{'OINKCODE'}) {
301 # Check if the oinkcode contains unallowed chars.
302 unless ($cgiparams{'OINKCODE'} =~ /^[a-z0-9]+$/) {
303 $errormessage = $Lang::tr
{'invalid input for oink code'};
307 # Go on if there are no error messages.
308 if (!$errormessage) {
309 # Store settings into settings file.
310 &General
::writehash
("$IDS::settingsdir/settings", \
%cgiparams);
312 # Call snortctrl to restart snort
313 system('/usr/local/bin/snortctrl restart >/dev/null');
317 # Read-in snortsettings
318 &General
::readhash
("$IDS::settingsdir/settings", \
%snortsettings);
320 $checked{'ENABLE_SNORT'}{'off'} = '';
321 $checked{'ENABLE_SNORT'}{'on'} = '';
322 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
323 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
324 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
325 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
326 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
327 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
328 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
329 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
330 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
331 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
332 $selected{'RULES'}{'nothing'} = '';
333 $selected{'RULES'}{'community'} = '';
334 $selected{'RULES'}{'emerging'} = '';
335 $selected{'RULES'}{'registered'} = '';
336 $selected{'RULES'}{'subscripted'} = '';
337 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
339 &Header
::openpage
($Lang::tr
{'intrusion detection system'}, 1, '');
344 // Tiny java script function to show/hide the rules
345 // of a given category.
346 function showhide(tblname) {
347 \$("#" + tblname).toggle();
353 &Header
::openbigbox
('100%', 'left', '', $errormessage);
356 &Header
::openbox
('100%', 'left', $Lang::tr
{'error messages'});
357 print "<class name='base'>$errormessage\n";
358 print " </class>\n";
362 &Header
::openbox
('100%', 'left', $Lang::tr
{'intrusion detection system'});
366 # Check if a ruleset allready has been downloaded.
367 if ( -f
"$IDS::rulestarball"){
368 # Call stat on the filename to obtain detailed information.
369 my @Info = stat("$IDS::rulestarball");
371 # Grab details about the creation time.
372 $rulesdate = localtime($Info[9]);
376 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
377 <table width='100%' border='0'>
379 <td class='base' width='25%'>
380 <input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'}>RED Snort
383 <td class='base' width='25%'>
384 <input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'}>GREEN Snort
387 <td class='base' width='25%'>
391 # Check if a blue device is configured.
392 if ($netsettings{'BLUE_DEV'}) {
393 print "<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />BLUE Snort\n";
398 print "<td width='25%'>\n";
400 # Check if an orange device is configured.
401 if ($netsettings{'ORANGE_DEV'}) {
402 print "<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />ORANGE Snort\n";
410 <td colspan='4'><br><br></td>
414 <td colspan='4'><b>$Lang::tr{'ids rules update'}</b></td>
418 <td colspan='4'><select name='RULES'>
419 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
420 <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option>
421 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
422 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
423 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
430 <br>$Lang::tr{'ids rules license'} <a href='https://www.snort.org/subscribe' target='_blank'>www.snort.org</a>$Lang::tr{'ids rules license1'}</br>
431 <br>$Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}</br>
436 <td colspan='4' nowrap='nowrap'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}'></td>
440 <td colspan='4' align='left'><br>
441 <input type='submit' name='RULESET' value='$Lang::tr{'download new ruleset'}'> $Lang::tr{'updates installed'}: $rulesdate
451 <td align='right'><input type='submit' name='SNORT' value='$Lang::tr{'save'}' /></td>
460 &Header
::openbox
('100%', 'LEFT', $Lang::tr
{'intrusion detection system rules'});
461 print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n";
463 # Output display table for rule files
464 print "<table width='100%'>\n";
466 # Local variable required for java script to show/hide
467 # rules of a rulefile.
468 my $rulesetcount = 1;
470 # Loop over each rule file
471 foreach my $rulefile (sort keys(%idsrules)) {
472 my $rulechecked = '';
474 # Check if rule file is enabled
475 if ($idsrules{$rulefile}{'Rulefile'}{'State'} eq 'on') {
476 $rulechecked = 'CHECKED';
479 # Table and rows for the rule files.
481 print"<td class='base' width='5%'>\n";
482 print"<input type='checkbox' name='$rulefile' $rulechecked>\n";
484 print"<td class='base' width='90%'><b>$rulefile</b></td>\n";
485 print"<td class='base' width='5%' align='right'>\n";
486 print"<a href=\"javascript:showhide('ruleset$rulesetcount')\">SHOW</a>\n";
490 # Rows which will be hidden per default and will contain the single rules.
491 print"<tr style='display:none' id='ruleset$rulesetcount'>\n";
492 print"<td colspan='3'>\n";
499 # New table for the single rules.
500 print "<table width='100%'>\n";
502 # Loop over rule file rules
503 foreach my $sid (sort {$a <=> $b} keys(%{$idsrules{$rulefile}})) {
505 my $ruledefchecked = '';
507 # Skip rulefile itself.
508 next if ($sid eq "Rulefile");
510 # If 2 rules have been displayed, start a new row
511 if (($lines % 2) == 0) {
514 # Increase rows by once.
520 $col="bgcolor='$color{'color20'}'";
522 $col="bgcolor='$color{'color22'}'";
526 if ($idsrules{$rulefile}{$sid}{'State'} eq 'on') {
527 $ruledefchecked = 'CHECKED';
530 # Create rule checkbox and display rule description
531 print "<td class='base' width='5%' align='right' $col>\n";
532 print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n";
534 print "<td class='base' width='45%' $col>$idsrules{$rulefile}{$sid}{'Description'}</td>";
536 # Increment rule count
540 # If do not have a second rule for row, create empty cell
541 if (($lines % 2) != 0) {
542 print "<td class='base'></td>";
545 # Close display table
546 print "</tr></table></td></tr>";
548 # Finished whith the rule file, increase count.
552 # Close display table
558 <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'>
559 <!-- space for future online help link -->
567 &Header
::closebigbox
();
568 &Header
::closepage
();
571 ## A function to display a notice, to lock the webpage and
572 ## tell the user which action currently will be performed.
574 sub working_notice
($) {
577 &Header
::openpage
($Lang::tr
{'intrusion detection system'}, 1, '');
578 &Header
::openbigbox
('100%', 'left', '', $errormessage);
579 &Header
::openbox
( 'Waiting', 1,);
583 <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td>
589 &Header
::closebigbox
();
590 &Header
::closepage
();
594 ## A tiny function to perform a reload of the webpage after one second.
597 print "<meta http-equiv='refresh' content='1'>\n";
604 ## Private function to read-in and parse rules of a given rulefile.
606 ## The given file will be read, parsed and all valid rules will be stored by ID,
607 ## message/description and it's state in the idsrules hash.
609 sub readrulesfile
($) {
610 my $rulefile = shift;
612 # Open rule file and read in contents
613 open(RULEFILE
, "$IDS::rulespath/$rulefile") or die "Unable to read $rulefile!";
615 # Store file content in an array.
616 my @lines = <RULEFILE
>;
621 # Loop over rule file contents
622 foreach my $line (@lines) {
623 # Remove whitespaces.
627 next if ($line =~ /^\s*$/);
633 # Gather rule sid and message from the ruleline.
634 if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) {
638 # Check if a rule has been found.
640 # Add rule to the idsrules hash.
641 $idsrules{$rulefile}{$sid}{'Description'} = $msg;
643 # Grab status of the rule. Check if ruleline starts with a "dash".
644 if ($line =~ /^\#/) {
645 # If yes, the rule is disabled.
646 $idsrules{$rulefile}{$sid}{'State'} = "off";
648 # Otherwise the rule is enabled.
649 $idsrules{$rulefile}{$sid}{'State'} = "on";