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1 | #!/usr/bin/perl | |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2007-2018 IPFire Team <info@ipfire.org> # | |
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 | use strict; | |
23 | ||
24 | # enable only the following on debugging purpose | |
25 | #use warnings; | |
26 | #use CGI::Carp 'fatalsToBrowser'; | |
27 | ||
28 | require '/var/ipfire/general-functions.pl'; | |
29 | require "${General::swroot}/lang.pl"; | |
30 | require "${General::swroot}/header.pl"; | |
31 | require "${General::swroot}/ids-functions.pl"; | |
32 | ||
33 | my %color = (); | |
34 | my %mainsettings = (); | |
35 | my %idsrules = (); | |
36 | my %idssettings=(); | |
37 | my %rulesetsources = (); | |
38 | my %cgiparams=(); | |
39 | my %checked=(); | |
40 | my %selected=(); | |
41 | ||
42 | # Read-in main settings, for language, theme and colors. | |
43 | &General::readhash("${General::swroot}/main/settings", \%mainsettings); | |
44 | &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color); | |
45 | ||
46 | # Get the available network zones, based on the config type of the system and store | |
47 | # the list of zones in an array. | |
48 | my @network_zones = &IDS::get_available_network_zones(); | |
49 | ||
50 | # File where the used rulefiles are stored. | |
51 | my $idsusedrulefilesfile = "$IDS::settingsdir/suricata-used-rulefiles.yaml"; | |
52 | ||
53 | # File where the addresses of the homenet are stored. | |
54 | my $idshomenetfile = "$IDS::settingsdir/suricata-homenet.yaml"; | |
55 | ||
56 | my $errormessage; | |
57 | ||
58 | &Header::showhttpheaders(); | |
59 | ||
60 | #Get GUI values | |
61 | &Header::getcgihash(\%cgiparams); | |
62 | ||
63 | # Check if any error has been stored. | |
64 | if (-e $IDS::storederrorfile) { | |
65 | # Open file to read in the stored error message. | |
66 | open(FILE, "<$IDS::storederrorfile") or die "Could not open $IDS::storederrorfile. $!\n"; | |
67 | ||
68 | # Read the stored error message. | |
69 | $errormessage = <FILE>; | |
70 | ||
71 | # Close file. | |
72 | close (FILE); | |
73 | ||
74 | # Delete the file, which is now not longer required. | |
75 | unlink($IDS::storederrorfile); | |
76 | } | |
77 | ||
78 | ||
79 | ## Grab all available snort rules and store them in the idsrules hash. | |
80 | # | |
81 | # Open snort rules directory and do a directory listing. | |
82 | opendir(DIR, $IDS::rulespath) or die $!; | |
83 | # Loop through the direcory. | |
84 | while (my $file = readdir(DIR)) { | |
85 | ||
86 | # We only want files. | |
87 | next unless (-f "$IDS::rulespath/$file"); | |
88 | ||
89 | # Ignore empty files. | |
90 | next if (-z "$IDS::rulespath/$file"); | |
91 | ||
92 | # Use a regular expression to find files ending in .rules | |
93 | next unless ($file =~ m/\.rules$/); | |
94 | ||
95 | # Ignore files which are not read-able. | |
96 | next unless (-R "$IDS::rulespath/$file"); | |
97 | ||
98 | # Call subfunction to read-in rulefile and add rules to | |
99 | # the idsrules hash. | |
100 | &readrulesfile("$file"); | |
101 | } | |
102 | ||
103 | closedir(DIR); | |
104 | ||
105 | # Gather used rulefiles. | |
106 | # | |
107 | # Check if the file for activated rulefiles is not empty. | |
108 | if(-f $idsusedrulefilesfile) { | |
109 | # Open the file for used rulefile and read-in content. | |
110 | open(FILE, $idsusedrulefilesfile) or die "Could not open $idsusedrulefilesfile. $!\n"; | |
111 | ||
112 | # Read-in content. | |
113 | my @lines = <FILE>; | |
114 | ||
115 | # Close file. | |
116 | close(FILE); | |
117 | ||
118 | # Loop through the array. | |
119 | foreach my $line (@lines) { | |
120 | # Remove newlines. | |
121 | chomp($line); | |
122 | ||
123 | # Skip comments. | |
124 | next if ($line =~ /\#/); | |
125 | ||
126 | # Skip blank lines. | |
127 | next if ($line =~ /^\s*$/); | |
128 | ||
129 | # Gather rule sid and message from the ruleline. | |
130 | if ($line =~ /.*- (.*)/) { | |
131 | my $rulefile = $1; | |
132 | ||
133 | # Add the rulefile to the %idsrules hash. | |
134 | $idsrules{$rulefile}{'Rulefile'}{'State'} = "on"; | |
135 | } | |
136 | } | |
137 | } | |
138 | ||
139 | # Save ruleset. | |
140 | if ($cgiparams{'RULESET'} eq $Lang::tr{'update'}) { | |
141 | my $enabled_sids_file = "$IDS::settingsdir/oinkmaster-enabled-sids.conf"; | |
142 | my $disabled_sids_file = "$IDS::settingsdir/oinkmaster-disabled-sids.conf"; | |
143 | ||
144 | # Arrays to store sid which should be added to the corresponding files. | |
145 | my @enabled_sids; | |
146 | my @disabled_sids; | |
147 | my @enabled_rulefiles; | |
148 | ||
149 | # Loop through the hash of idsrules. | |
150 | foreach my $rulefile(keys %idsrules) { | |
151 | # Check if the rulefile is enabled. | |
152 | if ($cgiparams{$rulefile} eq "on") { | |
153 | # Add rulefile to the array of enabled rulefiles. | |
154 | push(@enabled_rulefiles, $rulefile); | |
155 | ||
156 | # Drop item from cgiparams hash. | |
157 | delete $cgiparams{$rulefile}; | |
158 | } | |
159 | } | |
160 | ||
161 | # Loop through the hash of idsrules. | |
162 | foreach my $rulefile (keys %idsrules) { | |
163 | # Loop through the single rules of the rulefile. | |
164 | foreach my $sid (keys %{$idsrules{$rulefile}}) { | |
165 | # Skip the current sid if it is not numeric. | |
166 | next unless ($sid =~ /\d+/ ); | |
167 | ||
168 | # Check if there exists a key in the cgiparams hash for this sid. | |
169 | if (exists($cgiparams{$sid})) { | |
170 | # Look if the rule is disabled. | |
171 | if ($idsrules{$rulefile}{$sid}{'State'} eq "off") { | |
172 | # Check if the state has been set to 'on'. | |
173 | if ($cgiparams{$sid} eq "on") { | |
174 | # Add the sid to the enabled_sids array. | |
175 | push(@enabled_sids, $sid); | |
176 | ||
177 | # Drop item from cgiparams hash. | |
178 | delete $cgiparams{$rulefile}{$sid}; | |
179 | } | |
180 | } | |
181 | } else { | |
182 | # Look if the rule is enabled. | |
183 | if ($idsrules{$rulefile}{$sid}{'State'} eq "on") { | |
184 | # Check if the state is 'on' and should be disabled. | |
185 | # In this case there is no entry | |
186 | # for the sid in the cgiparams hash. | |
187 | # Add it to the disabled_sids array. | |
188 | push(@disabled_sids, $sid); | |
189 | ||
190 | # Drop item from cgiparams hash. | |
191 | delete $cgiparams{$rulefile}{$sid}; | |
192 | } | |
193 | } | |
194 | } | |
195 | } | |
196 | ||
197 | # Open enabled sid's file for writing. | |
198 | open(FILE, ">$enabled_sids_file") or die "Could not write to $enabled_sids_file. $!\n"; | |
199 | ||
200 | # Write header to file. | |
201 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
202 | ||
203 | # Check if the enabled_sids array contains any sid's. | |
204 | if (@enabled_sids) { | |
205 | # Loop through the array of enabled sids and write them to the file. | |
206 | foreach my $sid (@enabled_sids) { | |
207 | print FILE "enablesid $sid\n"; | |
208 | } | |
209 | } | |
210 | ||
211 | # Close file after writing. | |
212 | close(FILE); | |
213 | ||
214 | # Open disabled sid's file for writing. | |
215 | open(FILE, ">$disabled_sids_file") or die "Could not write to $disabled_sids_file. $!\n"; | |
216 | ||
217 | # Write header to file. | |
218 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
219 | ||
220 | # Check if the enabled_sids array contains any sid's. | |
221 | if (@disabled_sids) { | |
222 | # Loop through the array of disabled sids and write them to the file. | |
223 | foreach my $sid (@disabled_sids) { | |
224 | print FILE "disablesid $sid\n"; | |
225 | } | |
226 | } | |
227 | ||
228 | # Close file after writing. | |
229 | close(FILE); | |
230 | ||
231 | # Open file for used rulefiles. | |
232 | open (FILE, ">$idsusedrulefilesfile") or die "Could not write to $idsusedrulefilesfile. $!\n"; | |
233 | ||
234 | # Write yaml header to the file. | |
235 | print FILE "%YAML 1.1\n"; | |
236 | print FILE "---\n\n"; | |
237 | ||
238 | # Write header to file. | |
239 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
240 | ||
241 | # Check if the enabled_rulefiles array contains any entries. | |
242 | if (@enabled_rulefiles) { | |
243 | # Loop through the array of rulefiles which should be loaded and write the to the file. | |
244 | foreach my $file (@enabled_rulefiles) { | |
245 | print FILE " - $file\n"; | |
246 | } | |
247 | } | |
248 | ||
249 | # Close file after writing. | |
250 | close(FILE); | |
251 | ||
252 | # Lock the webpage and print message. | |
253 | &working_notice("$Lang::tr{'snort working'}"); | |
254 | ||
255 | # Call oinkmaster to alter the ruleset. | |
256 | &IDS::oinkmaster(); | |
257 | ||
258 | # Check if the IDS is running. | |
259 | if(&IDS::is_ids_running()) { | |
260 | # Call suricatactrl to perform a reload. | |
261 | &IDS::call_suricatactrl("reload"); | |
262 | } | |
263 | ||
264 | # Reload page. | |
265 | &reload(); | |
266 | ||
267 | # Download new ruleset. | |
268 | } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'download new ruleset'}) { | |
269 | # Check if the red device is active. | |
270 | unless (-e "${General::swroot}/red/active") { | |
271 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
272 | } | |
273 | ||
274 | # Check if enought free disk space is availabe. | |
275 | if(&IDS::checkdiskspace()) { | |
276 | $errormessage = "$Lang::tr{'not enough disk space'}"; | |
277 | } | |
278 | ||
279 | # Check if any errors happend. | |
280 | unless ($errormessage) { | |
281 | # Lock the webpage and print notice about downloading | |
282 | # a new ruleset. | |
283 | &working_notice("$Lang::tr{'snort working'}"); | |
284 | ||
285 | # Call subfunction to download the ruleset. | |
286 | if(&IDS::downloadruleset()) { | |
287 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
288 | ||
289 | # Call function to store the errormessage. | |
290 | &IDS::_store_error_message($errormessage); | |
291 | ||
292 | # Preform a reload of the page. | |
293 | &reload(); | |
294 | } else { | |
295 | # Call subfunction to launch oinkmaster. | |
296 | &IDS::oinkmaster(); | |
297 | ||
298 | # Check if the IDS is running. | |
299 | if(&IDS::is_ids_running()) { | |
300 | # Call suricatactrl to perform a reload. | |
301 | &IDS::call_suricatactrl("reload"); | |
302 | } | |
303 | ||
304 | # Perform a reload of the page. | |
305 | &reload(); | |
306 | } | |
307 | } | |
308 | # Save snort settings. | |
309 | } elsif ($cgiparams{'IDS'} eq $Lang::tr{'save'}) { | |
310 | my %oldidssettings; | |
311 | my $reload_page; | |
312 | ||
313 | # Read-in current (old) IDS settings. | |
314 | &General::readhash("$IDS::settingsdir/settings", \%oldidssettings); | |
315 | ||
316 | # Prevent form name from been stored in conf file. | |
317 | delete $cgiparams{'IDS'}; | |
318 | ||
319 | # Check if an oinkcode has been provided. | |
320 | if ($cgiparams{'OINKCODE'}) { | |
321 | # Check if the oinkcode contains unallowed chars. | |
322 | unless ($cgiparams{'OINKCODE'} =~ /^[a-z0-9]+$/) { | |
323 | $errormessage = $Lang::tr{'invalid input for oink code'}; | |
324 | } | |
325 | } | |
326 | ||
327 | # Go on if there are no error messages. | |
328 | if (!$errormessage) { | |
329 | # Store settings into settings file. | |
330 | &General::writehash("$IDS::settingsdir/settings", \%cgiparams); | |
331 | } | |
332 | ||
333 | # Generate file to store the home net. | |
334 | &generate_home_net_file(); | |
335 | ||
336 | # File which contains wheater the rules should be changed. | |
337 | my $modify_sids_file = "$IDS::settingsdir/oinkmaster-modify-sids.conf"; | |
338 | ||
339 | # Open modify sid's file for writing. | |
340 | open(FILE, ">$modify_sids_file") or die "Could not write to $modify_sids_file. $!\n"; | |
341 | ||
342 | # Write file header. | |
343 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
344 | ||
345 | # Check if the configured runmode is IPS. | |
346 | if ($cgiparams{'RUN_MODE'} eq 'IPS') { | |
347 | # Tell oinkmaster to switch all rules from alert to drop. | |
348 | print FILE "modifysid \* \"alert\" \| \"drop\"\n"; | |
349 | } | |
350 | ||
351 | # Close file handle. | |
352 | close(FILE); | |
353 | ||
354 | # Check if the runmode has been changed. | |
355 | if($cgiparams{'RUN_MODE'} ne $oldidssettings{'RUN_MODE'}) { | |
356 | # Check if a ruleset exists. | |
357 | if (%idsrules) { | |
358 | # Lock the webpage and print message. | |
359 | &working_notice("$Lang::tr{'snort working'}"); | |
360 | ||
361 | # Call oinkmaster to alter the ruleset. | |
362 | &IDS::oinkmaster(); | |
363 | ||
364 | # Set reload_page to "True". | |
365 | $reload_page="True"; | |
366 | } | |
367 | } | |
368 | ||
369 | # Check if the IDS currently is running. | |
370 | if(&IDS::ids_is_running()) { | |
371 | # Check if ENABLE_IDS is set to on. | |
372 | if($cgiparams{'ENABLE_IDS'} eq "on") { | |
373 | # Call suricatactrl to perform a reload of suricata. | |
374 | &IDS::call_suricatactrl("reload"); | |
375 | } else { | |
376 | # Call suricatactrl to stop suricata. | |
377 | &IDS::call_suricatactrl("stop"); | |
378 | } | |
379 | } else { | |
380 | # Call suricatactrl to start suricata. | |
381 | &IDS::call_suricatactrl("start"); | |
382 | } | |
383 | ||
384 | # Check if the page should be reloaded. | |
385 | if ($reload_page) { | |
386 | # Perform a reload of the page. | |
387 | &reload(); | |
388 | } | |
389 | } | |
390 | ||
391 | # Read-in idssettings | |
392 | &General::readhash("$IDS::settingsdir/settings", \%idssettings); | |
393 | ||
394 | # If the runmode has not been configured yet, set default value. | |
395 | unless(exists($idssettings{'RUN_MODE'})) { | |
396 | # Set default to IPS. | |
397 | $idssettings{'RUN_MODE'} = 'IPS'; | |
398 | } | |
399 | ||
400 | $checked{'ENABLE_IDS'}{'off'} = ''; | |
401 | $checked{'ENABLE_IDS'}{'on'} = ''; | |
402 | $checked{'ENABLE_IDS'}{$idssettings{'ENABLE_IDS'}} = "checked='checked'"; | |
403 | $checked{'RUN_MODE'}{'IDS'} = ''; | |
404 | $checked{'RUN_MODE'}{'IPS'} = ''; | |
405 | $checked{'RUN_MODE'}{$idssettings{'RUN_MODE'}} = "checked='checked'"; | |
406 | $selected{'RULES'}{'nothing'} = ''; | |
407 | $selected{'RULES'}{'community'} = ''; | |
408 | $selected{'RULES'}{'emerging'} = ''; | |
409 | $selected{'RULES'}{'registered'} = ''; | |
410 | $selected{'RULES'}{'subscripted'} = ''; | |
411 | $selected{'RULES'}{$idssettings{'RULES'}} = "selected='selected'"; | |
412 | ||
413 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
414 | ||
415 | ### Java Script ### | |
416 | print <<END | |
417 | <script> | |
418 | // Tiny java script function to show/hide the rules | |
419 | // of a given category. | |
420 | function showhide(tblname) { | |
421 | \$("#" + tblname).toggle(); | |
422 | } | |
423 | </script> | |
424 | END | |
425 | ; | |
426 | ||
427 | &Header::openbigbox('100%', 'left', '', $errormessage); | |
428 | ||
429 | if ($errormessage) { | |
430 | &Header::openbox('100%', 'left', $Lang::tr{'error messages'}); | |
431 | print "<class name='base'>$errormessage\n"; | |
432 | print " </class>\n"; | |
433 | &Header::closebox(); | |
434 | } | |
435 | ||
436 | # Draw current state of the IDS | |
437 | &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'}); | |
438 | ||
439 | # Check if the IDS is running and obtain the process-id. | |
440 | my $pid = &IDS::ids_is_running(); | |
441 | ||
442 | # Display some useful information, if suricata daemon is running. | |
443 | if ($pid) { | |
444 | # Gather used memory. | |
445 | my $memory = &get_memory_usage($pid); | |
446 | ||
447 | print <<END; | |
448 | <table width='95%' cellspacing='0' class='tbl'> | |
449 | <tr> | |
450 | <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</strong></th> | |
451 | </tr> | |
452 | ||
453 | <tr> | |
454 | <td class='base'>$Lang::tr{'guardian daemon'}</td> | |
455 | <td align='center' colspan='2' width='75%' bgcolor='${Header::colourgreen}'><font color='white'><strong>$Lang::tr{'running'}</strong></font></td> | |
456 | </tr> | |
457 | ||
458 | <tr> | |
459 | <td class='base'></td> | |
460 | <td bgcolor='$color{'color20'}' align='center'><strong>PID</strong></td> | |
461 | <td bgcolor='$color{'color20'}' align='center'><strong>$Lang::tr{'memory'}</strong></td> | |
462 | </tr> | |
463 | ||
464 | <tr> | |
465 | <td class='base'></td> | |
466 | <td bgcolor='$color{'color22'}' align='center'>$pid</td> | |
467 | <td bgcolor='$color{'color22'}' align='center'>$memory KB</td> | |
468 | </tr> | |
469 | </table> | |
470 | END | |
471 | } else { | |
472 | # Otherwise display a hint that the service is not launched. | |
473 | print <<END; | |
474 | <table width='95%' cellspacing='0' class='tbl'> | |
475 | <tr> | |
476 | <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</strong></th> | |
477 | </tr> | |
478 | ||
479 | <tr> | |
480 | <td class='base'>$Lang::tr{'guardian daemon'}</td> | |
481 | <td align='center' width='75%' bgcolor='${Header::colourred}'><font color='white'><strong>$Lang::tr{'stopped'}</strong></font></td> | |
482 | </tr> | |
483 | </table> | |
484 | END | |
485 | } | |
486 | &Header::closebox(); | |
487 | ||
488 | # Draw elements for IDS configuration. | |
489 | &Header::openbox('100%', 'center', $Lang::tr{'settings'}); | |
490 | ||
491 | my $rulesdate; | |
492 | ||
493 | # Check if a ruleset allready has been downloaded. | |
494 | if ( -f "$IDS::rulestarball"){ | |
495 | # Call stat on the filename to obtain detailed information. | |
496 | my @Info = stat("$IDS::rulestarball"); | |
497 | ||
498 | # Grab details about the creation time. | |
499 | $rulesdate = localtime($Info[9]); | |
500 | } | |
501 | ||
502 | print <<END | |
503 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
504 | <table width='100%' border='0'> | |
505 | <tr> | |
506 | <td class='base' colspan='4'> | |
507 | <input type='checkbox' name='ENABLE_IDS' $checked{'ENABLE_IDS'}{'on'}>$Lang::tr{'ids activate'} $Lang::tr{'intrusion detection system'} | |
508 | </td> | |
509 | </tr> | |
510 | ||
511 | <tr> | |
512 | <td colspan='4'><br><br></td> | |
513 | </tr> | |
514 | ||
515 | <tr> | |
516 | <td class='base' colspan='4'><b>$Lang::tr{'runmode'}</b></td> | |
517 | </tr> | |
518 | ||
519 | <tr> | |
520 | <td class='base' colspan='4'> | |
521 | <input type='radio' name='RUN_MODE' value='IDS' $checked{'RUN_MODE'}{'IDS'}>$Lang::tr{'intrusion detection system2'}     | |
522 | <input type='radio' name='RUN_MODE' value='IPS' $checked{'RUN_MODE'}{'IPS'}>$Lang::tr{'intrusion prevention system'} | |
523 | </td> | |
524 | </tr> | |
525 | ||
526 | <tr> | |
527 | <td colspan='4'><br></td> | |
528 | </tr> | |
529 | ||
530 | <tr> | |
531 | <td colspan='4'><b>$Lang::tr{'ids traffic analyze'}</b><br></td> | |
532 | </tr> | |
533 | ||
534 | <tr> | |
535 | END | |
536 | ; | |
537 | ||
538 | # Loop through the array of available networks and print config options. | |
539 | foreach my $zone (@network_zones) { | |
540 | my $checked_input; | |
541 | my $checked_forward; | |
542 | ||
543 | # Convert current zone name to upper case. | |
544 | my $zone_upper = uc($zone); | |
545 | ||
546 | # Grab checkbox status from settings hash. | |
547 | if ($idssettings{"ENABLE_IDS_$zone_upper"} eq "on") { | |
548 | $checked_input = "checked = 'checked'"; | |
549 | } | |
550 | ||
551 | print "<td class='base' width='25%'>\n"; | |
552 | print "<input type='checkbox' name='ENABLE_IDS_$zone_upper' $checked_input>$Lang::tr{'enabled on'} $Lang::tr{$zone}\n"; | |
553 | print "</td>\n"; | |
554 | } | |
555 | ||
556 | print <<END | |
557 | </tr> | |
558 | ||
559 | <tr> | |
560 | <td colspan='4'><br><br></td> | |
561 | </tr> | |
562 | ||
563 | <tr> | |
564 | <td colspan='4'><b>$Lang::tr{'ids rules update'}</b></td> | |
565 | </tr> | |
566 | ||
567 | <tr> | |
568 | <td colspan='4'><select name='RULES'> | |
569 | <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option> | |
570 | <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option> | |
571 | <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option> | |
572 | <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option> | |
573 | <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option> | |
574 | </select> | |
575 | </td> | |
576 | </tr> | |
577 | ||
578 | <tr> | |
579 | <td colspan='4'> | |
580 | <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> | |
581 | <br>$Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}</br> | |
582 | </td> | |
583 | </tr> | |
584 | ||
585 | <tr> | |
586 | <td colspan='4' nowrap='nowrap'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$idssettings{'OINKCODE'}'></td> | |
587 | </tr> | |
588 | ||
589 | <tr> | |
590 | <td colspan='4' align='left'><br> | |
591 | <input type='submit' name='RULESET' value='$Lang::tr{'download new ruleset'}'> $Lang::tr{'updates installed'}: $rulesdate | |
592 | </td> | |
593 | ||
594 | </tr> | |
595 | </table> | |
596 | ||
597 | <br><br> | |
598 | ||
599 | <table width='100%'> | |
600 | <tr> | |
601 | <td align='right'><input type='submit' name='IDS' value='$Lang::tr{'save'}' /></td> | |
602 | </tr> | |
603 | </table> | |
604 | </form> | |
605 | END | |
606 | ; | |
607 | ||
608 | &Header::closebox(); | |
609 | ||
610 | &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'}); | |
611 | print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n"; | |
612 | ||
613 | # Output display table for rule files | |
614 | print "<table width='100%'>\n"; | |
615 | ||
616 | # Local variable required for java script to show/hide | |
617 | # rules of a rulefile. | |
618 | my $rulesetcount = 1; | |
619 | ||
620 | # Loop over each rule file | |
621 | foreach my $rulefile (sort keys(%idsrules)) { | |
622 | my $rulechecked = ''; | |
623 | ||
624 | # Check if rule file is enabled | |
625 | if ($idsrules{$rulefile}{'Rulefile'}{'State'} eq 'on') { | |
626 | $rulechecked = 'CHECKED'; | |
627 | } | |
628 | ||
629 | # Table and rows for the rule files. | |
630 | print"<tr>\n"; | |
631 | print"<td class='base' width='5%'>\n"; | |
632 | print"<input type='checkbox' name='$rulefile' $rulechecked>\n"; | |
633 | print"</td>\n"; | |
634 | print"<td class='base' width='90%'><b>$rulefile</b></td>\n"; | |
635 | print"<td class='base' width='5%' align='right'>\n"; | |
636 | print"<a href=\"javascript:showhide('ruleset$rulesetcount')\">SHOW</a>\n"; | |
637 | print"</td>\n"; | |
638 | print"</tr>\n"; | |
639 | ||
640 | # Rows which will be hidden per default and will contain the single rules. | |
641 | print"<tr style='display:none' id='ruleset$rulesetcount'>\n"; | |
642 | print"<td colspan='3'>\n"; | |
643 | ||
644 | # Local vars | |
645 | my $lines; | |
646 | my $rows; | |
647 | my $col; | |
648 | ||
649 | # New table for the single rules. | |
650 | print "<table width='100%'>\n"; | |
651 | ||
652 | # Loop over rule file rules | |
653 | foreach my $sid (sort {$a <=> $b} keys(%{$idsrules{$rulefile}})) { | |
654 | # Local vars | |
655 | my $ruledefchecked = ''; | |
656 | ||
657 | # Skip rulefile itself. | |
658 | next if ($sid eq "Rulefile"); | |
659 | ||
660 | # If 2 rules have been displayed, start a new row | |
661 | if (($lines % 2) == 0) { | |
662 | print "</tr><tr>\n"; | |
663 | ||
664 | # Increase rows by once. | |
665 | $rows++; | |
666 | } | |
667 | ||
668 | # Colour lines. | |
669 | if ($rows % 2) { | |
670 | $col="bgcolor='$color{'color20'}'"; | |
671 | } else { | |
672 | $col="bgcolor='$color{'color22'}'"; | |
673 | } | |
674 | ||
675 | # Set rule state | |
676 | if ($idsrules{$rulefile}{$sid}{'State'} eq 'on') { | |
677 | $ruledefchecked = 'CHECKED'; | |
678 | } | |
679 | ||
680 | # Create rule checkbox and display rule description | |
681 | print "<td class='base' width='5%' align='right' $col>\n"; | |
682 | print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n"; | |
683 | print "</td>\n"; | |
684 | print "<td class='base' width='45%' $col>$idsrules{$rulefile}{$sid}{'Description'}</td>"; | |
685 | ||
686 | # Increment rule count | |
687 | $lines++; | |
688 | } | |
689 | ||
690 | # If do not have a second rule for row, create empty cell | |
691 | if (($lines % 2) != 0) { | |
692 | print "<td class='base'></td>"; | |
693 | } | |
694 | ||
695 | # Close display table | |
696 | print "</tr></table></td></tr>"; | |
697 | ||
698 | # Finished whith the rule file, increase count. | |
699 | $rulesetcount++; | |
700 | } | |
701 | ||
702 | # Close display table | |
703 | print "</table>"; | |
704 | ||
705 | print <<END | |
706 | <table width='100%'> | |
707 | <tr> | |
708 | <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'> | |
709 | <!-- space for future online help link --> | |
710 | </td> | |
711 | </tr> | |
712 | </table> | |
713 | </form> | |
714 | END | |
715 | ; | |
716 | &Header::closebox(); | |
717 | &Header::closebigbox(); | |
718 | &Header::closepage(); | |
719 | ||
720 | # | |
721 | ## A function to display a notice, to lock the webpage and | |
722 | ## tell the user which action currently will be performed. | |
723 | # | |
724 | sub working_notice ($) { | |
725 | my ($message) = @_; | |
726 | ||
727 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
728 | &Header::openbigbox('100%', 'left', '', $errormessage); | |
729 | &Header::openbox( 'Waiting', 1,); | |
730 | print <<END; | |
731 | <table> | |
732 | <tr> | |
733 | <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td> | |
734 | <td>$message</td> | |
735 | </tr> | |
736 | </table> | |
737 | END | |
738 | &Header::closebox(); | |
739 | &Header::closebigbox(); | |
740 | &Header::closepage(); | |
741 | } | |
742 | ||
743 | # | |
744 | ## A tiny function to perform a reload of the webpage after one second. | |
745 | # | |
746 | sub reload () { | |
747 | print "<meta http-equiv='refresh' content='1'>\n"; | |
748 | ||
749 | # Stop the script. | |
750 | exit; | |
751 | } | |
752 | ||
753 | # | |
754 | ## Private function to read-in and parse rules of a given rulefile. | |
755 | # | |
756 | ## The given file will be read, parsed and all valid rules will be stored by ID, | |
757 | ## message/description and it's state in the idsrules hash. | |
758 | # | |
759 | sub readrulesfile ($) { | |
760 | my $rulefile = shift; | |
761 | ||
762 | # Open rule file and read in contents | |
763 | open(RULEFILE, "$IDS::rulespath/$rulefile") or die "Unable to read $rulefile!"; | |
764 | ||
765 | # Store file content in an array. | |
766 | my @lines = <RULEFILE>; | |
767 | ||
768 | # Close file. | |
769 | close(RULEFILE); | |
770 | ||
771 | # Loop over rule file contents | |
772 | foreach my $line (@lines) { | |
773 | # Remove whitespaces. | |
774 | chomp $line; | |
775 | ||
776 | # Skip blank lines. | |
777 | next if ($line =~ /^\s*$/); | |
778 | ||
779 | # Local vars. | |
780 | my $sid; | |
781 | my $msg; | |
782 | ||
783 | # Gather rule sid and message from the ruleline. | |
784 | if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) { | |
785 | $msg = $1; | |
786 | $sid = $2; | |
787 | ||
788 | # Check if a rule has been found. | |
789 | if ($sid && $msg) { | |
790 | # Add rule to the idsrules hash. | |
791 | $idsrules{$rulefile}{$sid}{'Description'} = $msg; | |
792 | ||
793 | # Grab status of the rule. Check if ruleline starts with a "dash". | |
794 | if ($line =~ /^\#/) { | |
795 | # If yes, the rule is disabled. | |
796 | $idsrules{$rulefile}{$sid}{'State'} = "off"; | |
797 | } else { | |
798 | # Otherwise the rule is enabled. | |
799 | $idsrules{$rulefile}{$sid}{'State'} = "on"; | |
800 | } | |
801 | } | |
802 | } | |
803 | } | |
804 | } | |
805 | ||
806 | # | |
807 | ## Function to get the used memory of a given process-id. | |
808 | # | |
809 | sub get_memory_usage($) { | |
810 | my $pid = @_; | |
811 | ||
812 | my $memory=0; | |
813 | ||
814 | # Try to open statm file for the given process-id on the pseudo | |
815 | # file system proc. | |
816 | if (open(FILE, "/proc/$pid/statm")) { | |
817 | # Read file content. | |
818 | my $temp = <FILE>; | |
819 | ||
820 | # Splitt file content and store in an array. | |
821 | my @memory = split(/ /,$temp); | |
822 | ||
823 | # Close file handle. | |
824 | close(FILE); | |
825 | ||
826 | # Calculate memory usage. | |
827 | $memory+=$memory[0]; | |
828 | ||
829 | # Return memory usage. | |
830 | return $memory; | |
831 | } | |
832 | ||
833 | # If the file could not be open, return nothing. | |
834 | return; | |
835 | } | |
836 | ||
837 | # | |
838 | ## Function to generate the file which contains the home net information. | |
839 | # | |
840 | sub generate_home_net_file() { | |
841 | my %netsettings; | |
842 | ||
843 | # Read-in network settings. | |
844 | &General::readhash("${General::swroot}/ethernet/settings", \%netsettings); | |
845 | ||
846 | # Get available network zones. | |
847 | my @network_zones = &IDS::get_available_network_zones(); | |
848 | ||
849 | # Temporary array to store network address and prefix of the configured | |
850 | # networks. | |
851 | my @networks; | |
852 | ||
853 | # Loop through the array of available network zones. | |
854 | foreach my $zone (@network_zones) { | |
855 | # Skip the red network - It never can be part to the home_net! | |
856 | next if($zone eq "red"); | |
857 | ||
858 | # Convert current zone name into upper case. | |
859 | $zone = uc($zone); | |
860 | ||
861 | # Generate key to access the required data from the netsettings hash. | |
862 | my $zone_netaddress = $zone . "_NETADDRESS"; | |
863 | my $zone_netmask = $zone . "_NETMASK"; | |
864 | ||
865 | # Obtain the settings from the netsettings hash. | |
866 | my $netaddress = $netsettings{$zone_netaddress}; | |
867 | my $netmask = $netsettings{$zone_netmask}; | |
868 | ||
869 | # Convert the subnetmask into prefix notation. | |
870 | my $prefix = &Network::convert_netmask2prefix($netmask); | |
871 | ||
872 | # Generate full network string. | |
873 | my $network = join("/", $netaddress,$prefix); | |
874 | ||
875 | # Check if the network is valid. | |
876 | if(&Network::check_subnet($network)) { | |
877 | # Add the generated network to the array of networks. | |
878 | push(@networks, $network); | |
879 | } | |
880 | } | |
881 | ||
882 | # Format home net declaration. | |
883 | my $line = "\"\["; | |
884 | ||
885 | # Loop through the array of networks. | |
886 | foreach my $network (@networks) { | |
887 | # Add the network to the line. | |
888 | $line = "$line" . "$network"; | |
889 | ||
890 | # Check if the current network was the last in the array. | |
891 | if ($network eq $networks[-1]) { | |
892 | # Close the line. | |
893 | $line = "$line" . "\]\""; | |
894 | } else { | |
895 | # Add "," for the next network. | |
896 | $line = "$line" . "\,"; | |
897 | } | |
898 | } | |
899 | ||
900 | # Open file to store the addresses of the home net. | |
901 | open(FILE, ">$idshomenetfile") or die "Could not open $idshomenetfile. $!\n"; | |
902 | ||
903 | # Print yaml header. | |
904 | print FILE "%YAML 1.1\n"; | |
905 | print FILE "---\n\n"; | |
906 | ||
907 | # Print notice about autogenerated file. | |
908 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
909 | ||
910 | # Print the generated and required HOME_NET declaration to the file. | |
911 | print FILE "HOME_NET:\t$line\n"; | |
912 | ||
913 | # Close file handle. | |
914 | close(FILE); | |
915 | ||
916 | } |