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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 "${General::swroot}/ids-functions.pl"; | |
32 | ||
33 | my %color = (); | |
34 | my %mainsettings = (); | |
35 | my %netsettings = (); | |
36 | my %idsrules = (); | |
37 | my %snortsettings=(); | |
38 | my %rulesetsources = (); | |
39 | my %cgiparams=(); | |
40 | my %checked=(); | |
41 | my %selected=(); | |
42 | ||
43 | # Read-in main settings, for language, theme and colors. | |
44 | &General::readhash("${General::swroot}/main/settings", \%mainsettings); | |
45 | &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color); | |
46 | ||
47 | # Get netsettings. | |
48 | &General::readhash("${General::swroot}/ethernet/settings", \%netsettings); | |
49 | ||
50 | my $idsusedrulefilesfile = "$IDS::settingsdir/suricata-used-rulefiles.yaml"; | |
51 | my $errormessage; | |
52 | ||
53 | &Header::showhttpheaders(); | |
54 | ||
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'} = ''; | |
62 | ||
63 | #Get GUI values | |
64 | &Header::getcgihash(\%cgiparams); | |
65 | ||
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"; | |
70 | ||
71 | # Read the stored error message. | |
72 | $errormessage = <FILE>; | |
73 | ||
74 | # Close file. | |
75 | close (FILE); | |
76 | ||
77 | # Delete the file, which is now not longer required. | |
78 | unlink($IDS::storederrorfile); | |
79 | } | |
80 | ||
81 | ||
82 | ## Grab all available snort rules and store them in the idsrules hash. | |
83 | # | |
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 $file = readdir(DIR)) { | |
88 | ||
89 | # We only want files. | |
90 | next unless (-f "$IDS::rulespath/$file"); | |
91 | ||
92 | # Ignore empty files. | |
93 | next if (-z "$IDS::rulespath/$file"); | |
94 | ||
95 | # Use a regular expression to find files ending in .rules | |
96 | next unless ($file =~ m/\.rules$/); | |
97 | ||
98 | # Ignore files which are not read-able. | |
99 | next unless (-R "$IDS::rulespath/$file"); | |
100 | ||
101 | # Call subfunction to read-in rulefile and add rules to | |
102 | # the idsrules hash. | |
103 | &readrulesfile("$file"); | |
104 | } | |
105 | ||
106 | closedir(DIR); | |
107 | ||
108 | # Gather used rulefiles. | |
109 | # | |
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"; | |
114 | ||
115 | # Read-in content. | |
116 | my @lines = <FILE>; | |
117 | ||
118 | # Close file. | |
119 | close(FILE); | |
120 | ||
121 | # Loop through the array. | |
122 | foreach my $line (@lines) { | |
123 | # Remove newlines. | |
124 | chomp($line); | |
125 | ||
126 | # Skip comments. | |
127 | next if ($line =~ /\#/); | |
128 | ||
129 | # Skip blank lines. | |
130 | next if ($line =~ /^\s*$/); | |
131 | ||
132 | # Gather rule sid and message from the ruleline. | |
133 | if ($line =~ /.*- (.*)/) { | |
134 | my $rulefile = $1; | |
135 | ||
136 | # Add the rulefile to the %idsrules hash. | |
137 | $idsrules{$rulefile}{'Rulefile'}{'State'} = "on"; | |
138 | } | |
139 | } | |
140 | } | |
141 | ||
142 | # Save ruleset. | |
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"; | |
146 | ||
147 | # Arrays to store sid which should be added to the corresponding files. | |
148 | my @enabled_sids; | |
149 | my @disabled_sids; | |
150 | my @enabled_rulefiles; | |
151 | ||
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); | |
158 | ||
159 | # Drop item from cgiparams hash. | |
160 | delete $cgiparams{$rulefile}; | |
161 | } | |
162 | } | |
163 | ||
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+/ ); | |
170 | ||
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); | |
179 | ||
180 | # Drop item from cgiparams hash. | |
181 | delete $cgiparams{$rulefile}{$sid}; | |
182 | } | |
183 | } | |
184 | } else { | |
185 | # Look if the rule is enabled. | |
186 | if ($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); | |
192 | ||
193 | # Drop item from cgiparams hash. | |
194 | delete $cgiparams{$rulefile}{$sid}; | |
195 | } | |
196 | } | |
197 | } | |
198 | } | |
199 | ||
200 | # Open enabled sid's file for writing. | |
201 | open(FILE, ">$enabled_sids_file") or die "Could not write to $enabled_sids_file. $!\n"; | |
202 | ||
203 | # Write header to file. | |
204 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
205 | ||
206 | # Check if the enabled_sids array contains any sid's. | |
207 | if (@enabled_sids) { | |
208 | # Loop through the array of enabled sids and write them to the file. | |
209 | foreach my $sid (@enabled_sids) { | |
210 | print FILE "enablesid $sid\n"; | |
211 | } | |
212 | } | |
213 | ||
214 | # Close file after writing. | |
215 | close(FILE); | |
216 | ||
217 | # Open disabled sid's file for writing. | |
218 | open(FILE, ">$disabled_sids_file") or die "Could not write to $disabled_sids_file. $!\n"; | |
219 | ||
220 | # Write header to file. | |
221 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
222 | ||
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 $sid\n"; | |
228 | } | |
229 | } | |
230 | ||
231 | # Close file after writing. | |
232 | close(FILE); | |
233 | ||
234 | # Open file for used rulefiles. | |
235 | open (FILE, ">$idsusedrulefilesfile") or die "Could not write to $idsusedrulefilesfile. $!\n"; | |
236 | ||
237 | # Write yaml header to the file. | |
238 | print FILE "%YAML 1.1\n"; | |
239 | print FILE "---\n\n"; | |
240 | ||
241 | # Write header to file. | |
242 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
243 | ||
244 | # Check if the enabled_rulefiles array contains any entries. | |
245 | if (@enabled_rulefiles) { | |
246 | # Loop through the array of rulefiles which should be loaded and write the to the file. | |
247 | foreach my $file (@enabled_rulefiles) { | |
248 | print FILE " - $file\n"; | |
249 | } | |
250 | } | |
251 | ||
252 | # Close file after writing. | |
253 | close(FILE); | |
254 | ||
255 | # Lock the webpage and print message. | |
256 | &working_notice("$Lang::tr{'snort working'}"); | |
257 | ||
258 | # Call oinkmaster to alter the ruleset. | |
259 | &IDS::oinkmaster(); | |
260 | ||
261 | # Reload page. | |
262 | &reload(); | |
263 | ||
264 | # Download new ruleset. | |
265 | } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'download new ruleset'}) { | |
266 | # Check if the red device is active. | |
267 | unless (-e "${General::swroot}/red/active") { | |
268 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
269 | } | |
270 | ||
271 | # Check if enought free disk space is availabe. | |
272 | if(&IDS::checkdiskspace()) { | |
273 | $errormessage = "$Lang::tr{'not enough disk space'}"; | |
274 | } | |
275 | ||
276 | # Check if any errors happend. | |
277 | unless ($errormessage) { | |
278 | # Lock the webpage and print notice about downloading | |
279 | # a new ruleset. | |
280 | &working_notice("$Lang::tr{'snort working'}"); | |
281 | ||
282 | # Call subfunction to download the ruleset. | |
283 | if(&IDS::downloadruleset()) { | |
284 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
285 | ||
286 | # Call function to store the errormessage. | |
287 | &IDS::_store_error_message($errormessage); | |
288 | ||
289 | # Preform a reload of the page. | |
290 | &reload(); | |
291 | } else { | |
292 | # Call subfunction to launch oinkmaster. | |
293 | &IDS::oinkmaster(); | |
294 | ||
295 | # Perform a reload of the page. | |
296 | &reload(); | |
297 | } | |
298 | } | |
299 | # Save snort settings. | |
300 | } elsif ($cgiparams{'SNORT'} eq $Lang::tr{'save'}) { | |
301 | # Prevent form name from been stored in conf file. | |
302 | delete $cgiparams{'SNORT'}; | |
303 | ||
304 | # Check if an oinkcode has been provided. | |
305 | if ($cgiparams{'OINKCODE'}) { | |
306 | # Check if the oinkcode contains unallowed chars. | |
307 | unless ($cgiparams{'OINKCODE'} =~ /^[a-z0-9]+$/) { | |
308 | $errormessage = $Lang::tr{'invalid input for oink code'}; | |
309 | } | |
310 | } | |
311 | ||
312 | # Go on if there are no error messages. | |
313 | if (!$errormessage) { | |
314 | # Store settings into settings file. | |
315 | &General::writehash("$IDS::settingsdir/settings", \%cgiparams); | |
316 | ||
317 | # Call suricatactrl to restart the IDS | |
318 | system('/usr/local/bin/suricatactrl restart >/dev/null'); | |
319 | } | |
320 | } | |
321 | ||
322 | # Read-in snortsettings | |
323 | &General::readhash("$IDS::settingsdir/settings", \%snortsettings); | |
324 | ||
325 | $checked{'ENABLE_SNORT'}{'off'} = ''; | |
326 | $checked{'ENABLE_SNORT'}{'on'} = ''; | |
327 | $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'"; | |
328 | $checked{'ENABLE_SNORT_GREEN'}{'off'} = ''; | |
329 | $checked{'ENABLE_SNORT_GREEN'}{'on'} = ''; | |
330 | $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'"; | |
331 | $checked{'ENABLE_SNORT_BLUE'}{'off'} = ''; | |
332 | $checked{'ENABLE_SNORT_BLUE'}{'on'} = ''; | |
333 | $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'"; | |
334 | $checked{'ENABLE_SNORT_ORANGE'}{'off'} = ''; | |
335 | $checked{'ENABLE_SNORT_ORANGE'}{'on'} = ''; | |
336 | $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'"; | |
337 | $selected{'RULES'}{'nothing'} = ''; | |
338 | $selected{'RULES'}{'community'} = ''; | |
339 | $selected{'RULES'}{'emerging'} = ''; | |
340 | $selected{'RULES'}{'registered'} = ''; | |
341 | $selected{'RULES'}{'subscripted'} = ''; | |
342 | $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'"; | |
343 | ||
344 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
345 | ||
346 | ### Java Script ### | |
347 | print <<END | |
348 | <script> | |
349 | // Tiny java script function to show/hide the rules | |
350 | // of a given category. | |
351 | function showhide(tblname) { | |
352 | \$("#" + tblname).toggle(); | |
353 | } | |
354 | </script> | |
355 | END | |
356 | ; | |
357 | ||
358 | &Header::openbigbox('100%', 'left', '', $errormessage); | |
359 | ||
360 | if ($errormessage) { | |
361 | &Header::openbox('100%', 'left', $Lang::tr{'error messages'}); | |
362 | print "<class name='base'>$errormessage\n"; | |
363 | print " </class>\n"; | |
364 | &Header::closebox(); | |
365 | } | |
366 | ||
367 | &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'}); | |
368 | ||
369 | my $rulesdate; | |
370 | ||
371 | # Check if a ruleset allready has been downloaded. | |
372 | if ( -f "$IDS::rulestarball"){ | |
373 | # Call stat on the filename to obtain detailed information. | |
374 | my @Info = stat("$IDS::rulestarball"); | |
375 | ||
376 | # Grab details about the creation time. | |
377 | $rulesdate = localtime($Info[9]); | |
378 | } | |
379 | ||
380 | print <<END | |
381 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
382 | <table width='100%' border='0'> | |
383 | <tr> | |
384 | <td class='base' width='25%'> | |
385 | <input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'}>RED Snort | |
386 | </td> | |
387 | ||
388 | <td class='base' width='25%'> | |
389 | <input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'}>GREEN Snort | |
390 | </td> | |
391 | ||
392 | <td class='base' width='25%'> | |
393 | END | |
394 | ; | |
395 | ||
396 | # Check if a blue device is configured. | |
397 | if ($netsettings{'BLUE_DEV'}) { | |
398 | print "<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />BLUE Snort\n"; | |
399 | } | |
400 | ||
401 | print "</td>\n"; | |
402 | ||
403 | print "<td width='25%'>\n"; | |
404 | ||
405 | # Check if an orange device is configured. | |
406 | if ($netsettings{'ORANGE_DEV'}) { | |
407 | print "<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />ORANGE Snort\n"; | |
408 | } | |
409 | ||
410 | print <<END | |
411 | </td> | |
412 | </tr> | |
413 | ||
414 | <tr> | |
415 | <td colspan='4'><br><br></td> | |
416 | </tr> | |
417 | ||
418 | <tr> | |
419 | <td colspan='4'><b>$Lang::tr{'ids rules update'}</b></td> | |
420 | </tr> | |
421 | ||
422 | <tr> | |
423 | <td colspan='4'><select name='RULES'> | |
424 | <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option> | |
425 | <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option> | |
426 | <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option> | |
427 | <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option> | |
428 | <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option> | |
429 | </select> | |
430 | </td> | |
431 | </tr> | |
432 | ||
433 | <tr> | |
434 | <td colspan='4'> | |
435 | <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> | |
436 | <br>$Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}</br> | |
437 | </td> | |
438 | </tr> | |
439 | ||
440 | <tr> | |
441 | <td colspan='4' nowrap='nowrap'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}'></td> | |
442 | </tr> | |
443 | ||
444 | <tr> | |
445 | <td colspan='4' align='left'><br> | |
446 | <input type='submit' name='RULESET' value='$Lang::tr{'download new ruleset'}'> $Lang::tr{'updates installed'}: $rulesdate | |
447 | </td> | |
448 | ||
449 | </tr> | |
450 | </table> | |
451 | ||
452 | <br><br> | |
453 | ||
454 | <table width='100%'> | |
455 | <tr> | |
456 | <td align='right'><input type='submit' name='SNORT' value='$Lang::tr{'save'}' /></td> | |
457 | </tr> | |
458 | </table> | |
459 | </form> | |
460 | END | |
461 | ; | |
462 | ||
463 | &Header::closebox(); | |
464 | ||
465 | &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'}); | |
466 | print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n"; | |
467 | ||
468 | # Output display table for rule files | |
469 | print "<table width='100%'>\n"; | |
470 | ||
471 | # Local variable required for java script to show/hide | |
472 | # rules of a rulefile. | |
473 | my $rulesetcount = 1; | |
474 | ||
475 | # Loop over each rule file | |
476 | foreach my $rulefile (sort keys(%idsrules)) { | |
477 | my $rulechecked = ''; | |
478 | ||
479 | # Check if rule file is enabled | |
480 | if ($idsrules{$rulefile}{'Rulefile'}{'State'} eq 'on') { | |
481 | $rulechecked = 'CHECKED'; | |
482 | } | |
483 | ||
484 | # Table and rows for the rule files. | |
485 | print"<tr>\n"; | |
486 | print"<td class='base' width='5%'>\n"; | |
487 | print"<input type='checkbox' name='$rulefile' $rulechecked>\n"; | |
488 | print"</td>\n"; | |
489 | print"<td class='base' width='90%'><b>$rulefile</b></td>\n"; | |
490 | print"<td class='base' width='5%' align='right'>\n"; | |
491 | print"<a href=\"javascript:showhide('ruleset$rulesetcount')\">SHOW</a>\n"; | |
492 | print"</td>\n"; | |
493 | print"</tr>\n"; | |
494 | ||
495 | # Rows which will be hidden per default and will contain the single rules. | |
496 | print"<tr style='display:none' id='ruleset$rulesetcount'>\n"; | |
497 | print"<td colspan='3'>\n"; | |
498 | ||
499 | # Local vars | |
500 | my $lines; | |
501 | my $rows; | |
502 | my $col; | |
503 | ||
504 | # New table for the single rules. | |
505 | print "<table width='100%'>\n"; | |
506 | ||
507 | # Loop over rule file rules | |
508 | foreach my $sid (sort {$a <=> $b} keys(%{$idsrules{$rulefile}})) { | |
509 | # Local vars | |
510 | my $ruledefchecked = ''; | |
511 | ||
512 | # Skip rulefile itself. | |
513 | next if ($sid eq "Rulefile"); | |
514 | ||
515 | # If 2 rules have been displayed, start a new row | |
516 | if (($lines % 2) == 0) { | |
517 | print "</tr><tr>\n"; | |
518 | ||
519 | # Increase rows by once. | |
520 | $rows++; | |
521 | } | |
522 | ||
523 | # Colour lines. | |
524 | if ($rows % 2) { | |
525 | $col="bgcolor='$color{'color20'}'"; | |
526 | } else { | |
527 | $col="bgcolor='$color{'color22'}'"; | |
528 | } | |
529 | ||
530 | # Set rule state | |
531 | if ($idsrules{$rulefile}{$sid}{'State'} eq 'on') { | |
532 | $ruledefchecked = 'CHECKED'; | |
533 | } | |
534 | ||
535 | # Create rule checkbox and display rule description | |
536 | print "<td class='base' width='5%' align='right' $col>\n"; | |
537 | print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n"; | |
538 | print "</td>\n"; | |
539 | print "<td class='base' width='45%' $col>$idsrules{$rulefile}{$sid}{'Description'}</td>"; | |
540 | ||
541 | # Increment rule count | |
542 | $lines++; | |
543 | } | |
544 | ||
545 | # If do not have a second rule for row, create empty cell | |
546 | if (($lines % 2) != 0) { | |
547 | print "<td class='base'></td>"; | |
548 | } | |
549 | ||
550 | # Close display table | |
551 | print "</tr></table></td></tr>"; | |
552 | ||
553 | # Finished whith the rule file, increase count. | |
554 | $rulesetcount++; | |
555 | } | |
556 | ||
557 | # Close display table | |
558 | print "</table>"; | |
559 | ||
560 | print <<END | |
561 | <table width='100%'> | |
562 | <tr> | |
563 | <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'> | |
564 | <!-- space for future online help link --> | |
565 | </td> | |
566 | </tr> | |
567 | </table> | |
568 | </form> | |
569 | END | |
570 | ; | |
571 | &Header::closebox(); | |
572 | &Header::closebigbox(); | |
573 | &Header::closepage(); | |
574 | ||
575 | # | |
576 | ## A function to display a notice, to lock the webpage and | |
577 | ## tell the user which action currently will be performed. | |
578 | # | |
579 | sub working_notice ($) { | |
580 | my ($message) = @_; | |
581 | ||
582 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
583 | &Header::openbigbox('100%', 'left', '', $errormessage); | |
584 | &Header::openbox( 'Waiting', 1,); | |
585 | print <<END; | |
586 | <table> | |
587 | <tr> | |
588 | <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td> | |
589 | <td>$message</td> | |
590 | </tr> | |
591 | </table> | |
592 | END | |
593 | &Header::closebox(); | |
594 | &Header::closebigbox(); | |
595 | &Header::closepage(); | |
596 | } | |
597 | ||
598 | # | |
599 | ## A tiny function to perform a reload of the webpage after one second. | |
600 | # | |
601 | sub reload () { | |
602 | print "<meta http-equiv='refresh' content='1'>\n"; | |
603 | ||
604 | # Stop the script. | |
605 | exit; | |
606 | } | |
607 | ||
608 | # | |
609 | ## Private function to read-in and parse rules of a given rulefile. | |
610 | # | |
611 | ## The given file will be read, parsed and all valid rules will be stored by ID, | |
612 | ## message/description and it's state in the idsrules hash. | |
613 | # | |
614 | sub readrulesfile ($) { | |
615 | my $rulefile = shift; | |
616 | ||
617 | # Open rule file and read in contents | |
618 | open(RULEFILE, "$IDS::rulespath/$rulefile") or die "Unable to read $rulefile!"; | |
619 | ||
620 | # Store file content in an array. | |
621 | my @lines = <RULEFILE>; | |
622 | ||
623 | # Close file. | |
624 | close(RULEFILE); | |
625 | ||
626 | # Loop over rule file contents | |
627 | foreach my $line (@lines) { | |
628 | # Remove whitespaces. | |
629 | chomp $line; | |
630 | ||
631 | # Skip blank lines. | |
632 | next if ($line =~ /^\s*$/); | |
633 | ||
634 | # Local vars. | |
635 | my $sid; | |
636 | my $msg; | |
637 | ||
638 | # Gather rule sid and message from the ruleline. | |
639 | if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) { | |
640 | $msg = $1; | |
641 | $sid = $2; | |
642 | ||
643 | # Check if a rule has been found. | |
644 | if ($sid && $msg) { | |
645 | # Add rule to the idsrules hash. | |
646 | $idsrules{$rulefile}{$sid}{'Description'} = $msg; | |
647 | ||
648 | # Grab status of the rule. Check if ruleline starts with a "dash". | |
649 | if ($line =~ /^\#/) { | |
650 | # If yes, the rule is disabled. | |
651 | $idsrules{$rulefile}{$sid}{'State'} = "off"; | |
652 | } else { | |
653 | # Otherwise the rule is enabled. | |
654 | $idsrules{$rulefile}{$sid}{'State'} = "on"; | |
655 | } | |
656 | } | |
657 | } | |
658 | } | |
659 | } |