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ac1cfefa | 1 | #!/usr/bin/perl |
70df8302 MT |
2 | ############################################################################### |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
9d18656b | 5 | # Copyright (C) 2007-2018 IPFire Team <info@ipfire.org> # |
70df8302 MT |
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 | ||
ac1cfefa MT |
22 | use strict; |
23 | ||
24 | # enable only the following on debugging purpose | |
90c2e164 CS |
25 | #use warnings; |
26 | #use CGI::Carp 'fatalsToBrowser'; | |
ac1cfefa | 27 | |
986e08d9 | 28 | require '/var/ipfire/general-functions.pl'; |
ac1cfefa MT |
29 | require "${General::swroot}/lang.pl"; |
30 | require "${General::swroot}/header.pl"; | |
8dcebe53 | 31 | require "${General::swroot}/ids-functions.pl"; |
ac1cfefa | 32 | |
f2fdd0c1 CS |
33 | my %color = (); |
34 | my %mainsettings = (); | |
9d18656b | 35 | my %idsrules = (); |
1286e0d4 | 36 | my %idssettings=(); |
ea5c8eeb | 37 | my %rulessettings=(); |
43263ea6 | 38 | my %rulesetsources = (); |
298723b9 | 39 | my %cgiparams=(); |
ac1cfefa | 40 | my %checked=(); |
5a3e0dca | 41 | my %selected=(); |
b7e29743 | 42 | my %ignored=(); |
0b89daee SS |
43 | |
44 | # Read-in main settings, for language, theme and colors. | |
45 | &General::readhash("${General::swroot}/main/settings", \%mainsettings); | |
46 | &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color); | |
47 | ||
1286e0d4 SS |
48 | # Get the available network zones, based on the config type of the system and store |
49 | # the list of zones in an array. | |
50 | my @network_zones = &IDS::get_available_network_zones(); | |
ac1cfefa | 51 | |
43263ea6 SS |
52 | my $errormessage; |
53 | ||
00512a5a | 54 | # Create files if they does not exist yet. |
b02e30fd | 55 | &IDS::check_and_create_filelayout(); |
01ba4be4 | 56 | |
99b372b5 SS |
57 | # Hash which contains the colour code of a network zone. |
58 | my %colourhash = ( | |
59 | 'red' => $Header::colourred, | |
60 | 'green' => $Header::colourgreen, | |
61 | 'blue' => $Header::colourblue, | |
62 | 'orange' => $Header::colourorange | |
63 | ); | |
64 | ||
ac1cfefa MT |
65 | &Header::showhttpheaders(); |
66 | ||
298723b9 SS |
67 | #Get GUI values |
68 | &Header::getcgihash(\%cgiparams); | |
ac1cfefa | 69 | |
b7e29743 SS |
70 | ## Add/edit an entry to the ignore file. |
71 | # | |
72 | if (($cgiparams{'WHITELIST'} eq $Lang::tr{'add'}) || ($cgiparams{'WHITELIST'} eq $Lang::tr{'update'})) { | |
73 | ||
74 | # Check if any input has been performed. | |
75 | if ($cgiparams{'IGNORE_ENTRY_ADDRESS'} ne '') { | |
76 | ||
77 | # Check if the given input is no valid IP-address or IP-address with subnet, display an error message. | |
78 | if ((!&General::validip($cgiparams{'IGNORE_ENTRY_ADDRESS'})) && (!&General::validipandmask($cgiparams{'IGNORE_ENTRY_ADDRESS'}))) { | |
79 | $errormessage = "$Lang::tr{'guardian invalid address or subnet'}"; | |
80 | } | |
81 | } else { | |
82 | $errormessage = "$Lang::tr{'guardian empty input'}"; | |
83 | } | |
84 | ||
85 | # Go further if there was no error. | |
86 | if ($errormessage eq '') { | |
87 | my %ignored = (); | |
88 | my $id; | |
89 | my $status; | |
90 | ||
91 | # Assign hash values. | |
92 | my $new_entry_address = $cgiparams{'IGNORE_ENTRY_ADDRESS'}; | |
93 | my $new_entry_remark = $cgiparams{'IGNORE_ENTRY_REMARK'}; | |
94 | ||
95 | # Read-in ignoredfile. | |
b02e30fd | 96 | &General::readhasharray($IDS::ignored_file, \%ignored); |
b7e29743 SS |
97 | |
98 | # Check if we should edit an existing entry and got an ID. | |
99 | if (($cgiparams{'WHITELIST'} eq $Lang::tr{'update'}) && ($cgiparams{'ID'})) { | |
100 | # Assin the provided id. | |
101 | $id = $cgiparams{'ID'}; | |
102 | ||
103 | # Undef the given ID. | |
104 | undef($cgiparams{'ID'}); | |
105 | ||
106 | # Grab the configured status of the corresponding entry. | |
107 | $status = $ignored{$id}[2]; | |
108 | } else { | |
109 | # Each newly added entry automatically should be enabled. | |
110 | $status = "enabled"; | |
111 | ||
112 | # Generate the ID for the new entry. | |
113 | # | |
114 | # Sort the keys by their ID and store them in an array. | |
115 | my @keys = sort { $a <=> $b } keys %ignored; | |
116 | ||
117 | # Reverse the key array. | |
118 | my @reversed = reverse(@keys); | |
119 | ||
120 | # Obtain the last used id. | |
121 | my $last_id = @reversed[0]; | |
122 | ||
123 | # Increase the last id by one and use it as id for the new entry. | |
124 | $id = ++$last_id; | |
125 | } | |
126 | ||
127 | # Add/Modify the entry to/in the ignored hash. | |
128 | $ignored{$id} = ["$new_entry_address", "$new_entry_remark", "$status"]; | |
129 | ||
130 | # Write the changed ignored hash to the ignored file. | |
b02e30fd | 131 | &General::writehasharray($IDS::ignored_file, \%ignored); |
b7e29743 SS |
132 | |
133 | # Regenerate the ignore file. | |
134 | &GenerateIgnoreFile(); | |
135 | } | |
136 | ||
137 | # Check if the IDS is running. | |
138 | if(&IDS::ids_is_running()) { | |
139 | # Call suricatactrl to perform a reload. | |
140 | &IDS::call_suricatactrl("reload"); | |
141 | } | |
142 | ||
143 | ## Toggle Enabled/Disabled for an existing entry on the ignore list. | |
144 | # | |
145 | ||
146 | } elsif ($cgiparams{'WHITELIST'} eq $Lang::tr{'toggle enable disable'}) { | |
147 | my %ignored = (); | |
148 | ||
149 | # Only go further, if an ID has been passed. | |
150 | if ($cgiparams{'ID'}) { | |
151 | # Assign the given ID. | |
152 | my $id = $cgiparams{'ID'}; | |
153 | ||
154 | # Undef the given ID. | |
155 | undef($cgiparams{'ID'}); | |
156 | ||
157 | # Read-in ignoredfile. | |
b02e30fd | 158 | &General::readhasharray($IDS::ignored_file, \%ignored); |
b7e29743 SS |
159 | |
160 | # Grab the configured status of the corresponding entry. | |
161 | my $status = $ignored{$id}[2]; | |
162 | ||
163 | # Switch the status. | |
164 | if ($status eq "disabled") { | |
165 | $status = "enabled"; | |
166 | } else { | |
167 | $status = "disabled"; | |
168 | } | |
169 | ||
170 | # Modify the status of the existing entry. | |
171 | $ignored{$id} = ["$ignored{$id}[0]", "$ignored{$id}[1]", "$status"]; | |
172 | ||
173 | # Write the changed ignored hash to the ignored file. | |
b02e30fd | 174 | &General::writehasharray($IDS::ignored_file, \%ignored); |
b7e29743 SS |
175 | |
176 | # Regenerate the ignore file. | |
177 | &GenerateIgnoreFile(); | |
178 | ||
179 | # Check if the IDS is running. | |
180 | if(&IDS::ids_is_running()) { | |
181 | # Call suricatactrl to perform a reload. | |
182 | &IDS::call_suricatactrl("reload"); | |
183 | } | |
184 | } | |
185 | ||
186 | ## Remove entry from ignore list. | |
187 | # | |
188 | } elsif ($cgiparams{'WHITELIST'} eq $Lang::tr{'remove'}) { | |
189 | my %ignored = (); | |
190 | ||
191 | # Read-in ignoredfile. | |
b02e30fd | 192 | &General::readhasharray($IDS::ignored_file, \%ignored); |
b7e29743 SS |
193 | |
194 | # Drop entry from the hash. | |
195 | delete($ignored{$cgiparams{'ID'}}); | |
196 | ||
197 | # Undef the given ID. | |
198 | undef($cgiparams{'ID'}); | |
199 | ||
200 | # Write the changed ignored hash to the ignored file. | |
b02e30fd | 201 | &General::writehasharray($IDS::ignored_file, \%ignored); |
b7e29743 SS |
202 | |
203 | # Regenerate the ignore file. | |
204 | &GenerateIgnoreFile(); | |
205 | ||
206 | # Check if the IDS is running. | |
207 | if(&IDS::ids_is_running()) { | |
208 | # Call suricatactrl to perform a reload. | |
209 | &IDS::call_suricatactrl("reload"); | |
210 | } | |
211 | } | |
212 | ||
3983aebd SS |
213 | # Check if any error has been stored. |
214 | if (-e $IDS::storederrorfile) { | |
215 | # Open file to read in the stored error message. | |
216 | open(FILE, "<$IDS::storederrorfile") or die "Could not open $IDS::storederrorfile. $!\n"; | |
217 | ||
218 | # Read the stored error message. | |
219 | $errormessage = <FILE>; | |
220 | ||
221 | # Close file. | |
222 | close (FILE); | |
223 | ||
224 | # Delete the file, which is now not longer required. | |
225 | unlink($IDS::storederrorfile); | |
226 | } | |
227 | ||
228 | ||
9d18656b | 229 | ## Grab all available snort rules and store them in the idsrules hash. |
3da6e01b | 230 | # |
422204ff | 231 | # Open snort rules directory and do a directory listing. |
298ef5ba | 232 | opendir(DIR, $IDS::rulespath) or die $!; |
422204ff SS |
233 | # Loop through the direcory. |
234 | while (my $file = readdir(DIR)) { | |
235 | ||
236 | # We only want files. | |
298ef5ba | 237 | next unless (-f "$IDS::rulespath/$file"); |
422204ff SS |
238 | |
239 | # Ignore empty files. | |
298ef5ba | 240 | next if (-z "$IDS::rulespath/$file"); |
422204ff | 241 | |
3da6e01b | 242 | # Use a regular expression to find files ending in .rules |
422204ff SS |
243 | next unless ($file =~ m/\.rules$/); |
244 | ||
3da6e01b | 245 | # Ignore files which are not read-able. |
298ef5ba | 246 | next unless (-R "$IDS::rulespath/$file"); |
395e3b90 | 247 | |
b7e29743 SS |
248 | # Skip whitelist rules file. |
249 | next if( $file eq "whitelist.rules"); | |
250 | ||
3da6e01b | 251 | # Call subfunction to read-in rulefile and add rules to |
9d18656b | 252 | # the idsrules hash. |
3da6e01b | 253 | &readrulesfile("$file"); |
395e3b90 | 254 | } |
395e3b90 | 255 | |
3da6e01b | 256 | closedir(DIR); |
395e3b90 | 257 | |
e5738079 SS |
258 | # Gather used rulefiles. |
259 | # | |
260 | # Check if the file for activated rulefiles is not empty. | |
b02e30fd | 261 | if(-f $IDS::used_rulefiles_file) { |
e5738079 | 262 | # Open the file for used rulefile and read-in content. |
b02e30fd | 263 | open(FILE, $IDS::used_rulefiles_file) or die "Could not open $IDS::used_rulefiles_file. $!\n"; |
e5738079 SS |
264 | |
265 | # Read-in content. | |
266 | my @lines = <FILE>; | |
267 | ||
268 | # Close file. | |
269 | close(FILE); | |
270 | ||
271 | # Loop through the array. | |
272 | foreach my $line (@lines) { | |
273 | # Remove newlines. | |
274 | chomp($line); | |
275 | ||
276 | # Skip comments. | |
277 | next if ($line =~ /\#/); | |
278 | ||
279 | # Skip blank lines. | |
280 | next if ($line =~ /^\s*$/); | |
281 | ||
282 | # Gather rule sid and message from the ruleline. | |
101c8881 | 283 | if ($line =~ /.*- (.*)/) { |
e5738079 SS |
284 | my $rulefile = $1; |
285 | ||
43ab7d9c SS |
286 | # Check if the current rulefile exists in the %idsrules hash. |
287 | # If not, the file probably does not exist anymore or contains | |
288 | # no rules. | |
289 | if($idsrules{$rulefile}) { | |
290 | # Add the rulefile state to the %idsrules hash. | |
291 | $idsrules{$rulefile}{'Rulefile'}{'State'} = "on"; | |
292 | } | |
e5738079 SS |
293 | } |
294 | } | |
295 | } | |
296 | ||
ea5c8eeb SS |
297 | # Save ruleset configuration. |
298 | if ($cgiparams{'RULESET'} eq $Lang::tr{'save'}) { | |
299 | my %oldsettings; | |
300 | ||
301 | # Read-in current (old) IDS settings. | |
b02e30fd | 302 | &General::readhash("$IDS::rules_settings_file", \%oldsettings); |
ea5c8eeb SS |
303 | |
304 | # Prevent form name from been stored in conf file. | |
305 | delete $cgiparams{'RULESET'}; | |
306 | ||
307 | # Check if an oinkcode has been provided. | |
308 | if ($cgiparams{'OINKCODE'}) { | |
309 | # Check if the oinkcode contains unallowed chars. | |
310 | unless ($cgiparams{'OINKCODE'} =~ /^[a-z0-9]+$/) { | |
311 | $errormessage = $Lang::tr{'invalid input for oink code'}; | |
312 | } | |
313 | } | |
314 | ||
315 | # Go on if there are no error messages. | |
316 | if (!$errormessage) { | |
317 | # Store settings into settings file. | |
b02e30fd | 318 | &General::writehash("$IDS::rules_settings_file", \%cgiparams); |
ea5c8eeb SS |
319 | } |
320 | ||
321 | # Check if the the automatic rule update hass been touched. | |
322 | if($cgiparams{'AUTOUPDATE_INTERVAL'} ne $oldsettings{'AUTOUPDATE_INTERVAL'}) { | |
323 | # Call suricatactrl to set the new interval. | |
324 | &IDS::call_suricatactrl("cron", $cgiparams{'AUTOUPDATE_INTERVAL'}); | |
325 | } | |
326 | ||
298723b9 | 327 | # Save ruleset. |
ea5c8eeb | 328 | } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'update'}) { |
d2212836 | 329 | # Arrays to store which rulefiles have been enabled and will be used. |
e5738079 | 330 | my @enabled_rulefiles; |
298723b9 | 331 | |
d2212836 SS |
332 | # Hash to store the user-enabled and disabled sids. |
333 | my %enabled_disabled_sids; | |
334 | ||
9d18656b SS |
335 | # Loop through the hash of idsrules. |
336 | foreach my $rulefile(keys %idsrules) { | |
e5738079 SS |
337 | # Check if the rulefile is enabled. |
338 | if ($cgiparams{$rulefile} eq "on") { | |
339 | # Add rulefile to the array of enabled rulefiles. | |
340 | push(@enabled_rulefiles, $rulefile); | |
b65b5ef3 SS |
341 | |
342 | # Drop item from cgiparams hash. | |
343 | delete $cgiparams{$rulefile}; | |
e5738079 | 344 | } |
466c6779 | 345 | } |
e5738079 | 346 | |
d2212836 SS |
347 | # Read-in the files for enabled/disabled sids. |
348 | # This will be done by calling the read_enabled_disabled_sids_file function two times | |
349 | # and merge the returned hashes together into the enabled_disabled_sids hash. | |
350 | %enabled_disabled_sids = ( | |
b02e30fd SS |
351 | &read_enabled_disabled_sids_file($IDS::disabled_sids_file), |
352 | &read_enabled_disabled_sids_file($IDS::enabled_sids_file)); | |
d2212836 | 353 | |
9d18656b SS |
354 | # Loop through the hash of idsrules. |
355 | foreach my $rulefile (keys %idsrules) { | |
298723b9 | 356 | # Loop through the single rules of the rulefile. |
9d18656b | 357 | foreach my $sid (keys %{$idsrules{$rulefile}}) { |
c51a044a SS |
358 | # Skip the current sid if it is not numeric. |
359 | next unless ($sid =~ /\d+/ ); | |
360 | ||
298723b9 SS |
361 | # Check if there exists a key in the cgiparams hash for this sid. |
362 | if (exists($cgiparams{$sid})) { | |
363 | # Look if the rule is disabled. | |
9d18656b | 364 | if ($idsrules{$rulefile}{$sid}{'State'} eq "off") { |
298723b9 SS |
365 | # Check if the state has been set to 'on'. |
366 | if ($cgiparams{$sid} eq "on") { | |
d2212836 SS |
367 | # Add/Modify the sid to/in the enabled_disabled_sids hash. |
368 | $enabled_disabled_sids{$sid} = "enabled"; | |
298723b9 SS |
369 | |
370 | # Drop item from cgiparams hash. | |
60333473 | 371 | delete $cgiparams{$rulefile}{$sid}; |
298723b9 SS |
372 | } |
373 | } | |
374 | } else { | |
375 | # Look if the rule is enabled. | |
9d18656b | 376 | if ($idsrules{$rulefile}{$sid}{'State'} eq "on") { |
298723b9 SS |
377 | # Check if the state is 'on' and should be disabled. |
378 | # In this case there is no entry | |
379 | # for the sid in the cgiparams hash. | |
d2212836 SS |
380 | # Add/Modify it to/in the enabled_disabled_sids hash. |
381 | $enabled_disabled_sids{$sid} = "disabled"; | |
298723b9 SS |
382 | |
383 | # Drop item from cgiparams hash. | |
60333473 | 384 | delete $cgiparams{$rulefile}{$sid}; |
298723b9 SS |
385 | } |
386 | } | |
387 | } | |
388 | } | |
389 | ||
37659505 | 390 | # Open enabled sid's file for writing. |
b02e30fd | 391 | open(ENABLED_FILE, ">$IDS::enabled_sids_file") or die "Could not write to $IDS::enabled_sids_file. $!\n"; |
37659505 SS |
392 | |
393 | # Open disabled sid's file for writing. | |
b02e30fd | 394 | open(DISABLED_FILE, ">$IDS::disabled_sids_file") or die "Could not write to $IDS::disabled_sids_file. $!\n"; |
d2212836 SS |
395 | |
396 | # Write header to the files. | |
397 | print ENABLED_FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
398 | print DISABLED_FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
399 | ||
400 | # Check if the hash for enabled/disabled files contains any entries. | |
401 | if (%enabled_disabled_sids) { | |
402 | # Loop through the hash. | |
403 | foreach my $sid (keys %enabled_disabled_sids) { | |
404 | # Check if the sid is enabled. | |
405 | if ($enabled_disabled_sids{$sid} eq "enabled") { | |
406 | # Print the sid to the enabled_sids file. | |
407 | print ENABLED_FILE "enablesid $sid\n"; | |
408 | # Check if the sid is disabled. | |
409 | } elsif ($enabled_disabled_sids{$sid} eq "disabled") { | |
410 | # Print the sid to the disabled_sids file. | |
411 | print DISABLED_FILE "disablesid $sid\n"; | |
412 | # Something strange happende - skip the current sid. | |
413 | } else { | |
414 | next; | |
415 | } | |
37659505 SS |
416 | } |
417 | } | |
298723b9 | 418 | |
d2212836 SS |
419 | # Close file for enabled_sids after writing. |
420 | close(ENABLED_FILE); | |
421 | ||
422 | # Close file for disabled_sids after writing. | |
423 | close(DISABLED_FILE); | |
e5738079 | 424 | |
b02e30fd SS |
425 | # Call function to generate and write the used rulefiles file. |
426 | &IDS::write_used_rulefiles_file(@enabled_rulefiles); | |
52599865 | 427 | |
27760092 SS |
428 | # Lock the webpage and print message. |
429 | &working_notice("$Lang::tr{'snort working'}"); | |
430 | ||
52599865 | 431 | # Call oinkmaster to alter the ruleset. |
27760092 SS |
432 | &IDS::oinkmaster(); |
433 | ||
e2e7880d | 434 | # Check if the IDS is running. |
5a28e721 | 435 | if(&IDS::ids_is_running()) { |
e2e7880d SS |
436 | # Call suricatactrl to perform a reload. |
437 | &IDS::call_suricatactrl("reload"); | |
438 | } | |
439 | ||
27760092 SS |
440 | # Reload page. |
441 | &reload(); | |
52599865 SS |
442 | |
443 | # Download new ruleset. | |
444 | } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'download new ruleset'}) { | |
43263ea6 SS |
445 | # Check if the red device is active. |
446 | unless (-e "${General::swroot}/red/active") { | |
447 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
448 | } | |
52599865 | 449 | |
3983aebd | 450 | # Check if enought free disk space is availabe. |
434001d0 SS |
451 | if(&IDS::checkdiskspace()) { |
452 | $errormessage = "$Lang::tr{'not enough disk space'}"; | |
453 | } | |
52599865 | 454 | |
43263ea6 SS |
455 | # Check if any errors happend. |
456 | unless ($errormessage) { | |
27760092 SS |
457 | # Lock the webpage and print notice about downloading |
458 | # a new ruleset. | |
459 | &working_notice("$Lang::tr{'snort working'}"); | |
3983aebd | 460 | |
43263ea6 | 461 | # Call subfunction to download the ruleset. |
434001d0 SS |
462 | if(&IDS::downloadruleset()) { |
463 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
8f22237b | 464 | |
3983aebd | 465 | # Call function to store the errormessage. |
434001d0 | 466 | &IDS::_store_error_message($errormessage); |
52599865 | 467 | |
3983aebd SS |
468 | # Preform a reload of the page. |
469 | &reload(); | |
470 | } else { | |
471 | # Call subfunction to launch oinkmaster. | |
472 | &IDS::oinkmaster(); | |
43263ea6 | 473 | |
e2e7880d | 474 | # Check if the IDS is running. |
5a28e721 | 475 | if(&IDS::ids_is_running()) { |
e2e7880d SS |
476 | # Call suricatactrl to perform a reload. |
477 | &IDS::call_suricatactrl("reload"); | |
478 | } | |
479 | ||
3983aebd SS |
480 | # Perform a reload of the page. |
481 | &reload(); | |
482 | } | |
52599865 | 483 | } |
a232b58c | 484 | # Save snort settings. |
e0bfd338 | 485 | } elsif ($cgiparams{'IDS'} eq $Lang::tr{'save'}) { |
bbb6efae SS |
486 | my %oldidssettings; |
487 | my $reload_page; | |
ebdd0f9a | 488 | my $monitored_zones = 0; |
bbb6efae SS |
489 | |
490 | # Read-in current (old) IDS settings. | |
b02e30fd | 491 | &General::readhash("$IDS::ids_settings_file", \%oldidssettings); |
bbb6efae | 492 | |
a232b58c | 493 | # Prevent form name from been stored in conf file. |
e0bfd338 | 494 | delete $cgiparams{'IDS'}; |
a232b58c | 495 | |
ebdd0f9a SS |
496 | # Check if the IDS should be enabled. |
497 | if ($cgiparams{'ENABLE_IDS'} eq "on") { | |
498 | # Check if any ruleset is available. Otherwise abort and display an error. | |
499 | unless(%idsrules) { | |
500 | $errormessage = $Lang::tr{'ids no ruleset available'}; | |
501 | } | |
502 | ||
503 | # Loop through the array of available interfaces. | |
504 | foreach my $zone (@network_zones) { | |
505 | # Convert interface name into upper case. | |
506 | my $zone_upper = uc($zone); | |
507 | ||
508 | # Check if the IDS is enabled for this interaces. | |
509 | if ($cgiparams{"ENABLE_IDS_$zone_upper"}) { | |
510 | # Increase count. | |
511 | $monitored_zones++; | |
512 | } | |
513 | } | |
514 | ||
515 | # Check if at least one zone should be monitored, or show an error. | |
516 | unless ($monitored_zones >= 1) { | |
517 | $errormessage = $Lang::tr{'ids no network zone'}; | |
518 | } | |
519 | } | |
520 | ||
a232b58c SS |
521 | # Go on if there are no error messages. |
522 | if (!$errormessage) { | |
523 | # Store settings into settings file. | |
b02e30fd | 524 | &General::writehash("$IDS::ids_settings_file", \%cgiparams); |
a9a91e5f | 525 | } |
8d2f6b0b SS |
526 | |
527 | # Generate file to store the home net. | |
b02e30fd | 528 | &IDS::generate_home_net_file(); |
e2e7880d | 529 | |
01d02eb6 | 530 | # Open modify sid's file for writing. |
b02e30fd | 531 | open(FILE, ">$IDS::modify_sids_file") or die "Could not write to $IDS::modify_sids_file. $!\n"; |
01d02eb6 SS |
532 | |
533 | # Write file header. | |
534 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
535 | ||
536 | # Check if the traffic only should be monitored. | |
537 | unless($cgiparams{'MONITOR_TRAFFIC_ONLY'} eq 'on') { | |
538 | # Tell oinkmaster to switch all rules from alert to drop. | |
539 | print FILE "modifysid \* \"alert\" \| \"drop\"\n"; | |
540 | } | |
bbb6efae | 541 | |
01d02eb6 SS |
542 | # Close file handle. |
543 | close(FILE); | |
bbb6efae | 544 | |
01d02eb6 SS |
545 | # Check if "MONITOR_TRAFFIC_ONLY" has been changed. |
546 | if($cgiparams{'MONITOR_TRAFFIC_ONLY'} ne $oldidssettings{'MONITOR_TRAFFIC_ONLY'}) { | |
bbb6efae SS |
547 | # Check if a ruleset exists. |
548 | if (%idsrules) { | |
549 | # Lock the webpage and print message. | |
550 | &working_notice("$Lang::tr{'snort working'}"); | |
551 | ||
552 | # Call oinkmaster to alter the ruleset. | |
553 | &IDS::oinkmaster(); | |
554 | ||
555 | # Set reload_page to "True". | |
556 | $reload_page="True"; | |
557 | } | |
558 | } | |
559 | ||
e2e7880d SS |
560 | # Check if the IDS currently is running. |
561 | if(&IDS::ids_is_running()) { | |
562 | # Check if ENABLE_IDS is set to on. | |
563 | if($cgiparams{'ENABLE_IDS'} eq "on") { | |
564 | # Call suricatactrl to perform a reload of suricata. | |
565 | &IDS::call_suricatactrl("reload"); | |
566 | } else { | |
567 | # Call suricatactrl to stop suricata. | |
568 | &IDS::call_suricatactrl("stop"); | |
569 | } | |
570 | } else { | |
571 | # Call suricatactrl to start suricata. | |
572 | &IDS::call_suricatactrl("start"); | |
573 | } | |
bbb6efae SS |
574 | |
575 | # Check if the page should be reloaded. | |
576 | if ($reload_page) { | |
577 | # Perform a reload of the page. | |
578 | &reload(); | |
579 | } | |
ac1cfefa MT |
580 | } |
581 | ||
ea5c8eeb | 582 | # Read-in idssettings and rulesetsettings |
b02e30fd SS |
583 | &General::readhash("$IDS::ids_settings_file", \%idssettings); |
584 | &General::readhash("$IDS::rules_settings_file", \%rulessettings); | |
1286e0d4 | 585 | |
ea5c8eeb SS |
586 | # If no autoupdate intervall has been configured yet, set default value. |
587 | unless(exists($rulessettings{'AUTOUPDATE_INTERVAL'})) { | |
588 | # Set default to "weekly". | |
589 | $rulessettings{'AUTOUPDATE_INTERVAL'} = 'weekly'; | |
590 | } | |
591 | ||
b7e29743 SS |
592 | # Read-in ignored hosts. |
593 | &General::readhasharray("$IDS::settingsdir/ignored", \%ignored); | |
594 | ||
1286e0d4 SS |
595 | $checked{'ENABLE_IDS'}{'off'} = ''; |
596 | $checked{'ENABLE_IDS'}{'on'} = ''; | |
597 | $checked{'ENABLE_IDS'}{$idssettings{'ENABLE_IDS'}} = "checked='checked'"; | |
01d02eb6 SS |
598 | $checked{'MONITOR_TRAFFIC_ONLY'}{'off'} = ''; |
599 | $checked{'MONITOR_TRAFFIC_ONLY'}{'on'} = ''; | |
600 | $checked{'MONITOR_TRAFFIC_ONLY'}{$idssettings{'MONITOR_TRAFFIC_ONLY'}} = "checked='checked'"; | |
5a3e0dca | 601 | $selected{'RULES'}{'nothing'} = ''; |
5a3e0dca | 602 | $selected{'RULES'}{'community'} = ''; |
a0fa489f | 603 | $selected{'RULES'}{'emerging'} = ''; |
5a3e0dca MT |
604 | $selected{'RULES'}{'registered'} = ''; |
605 | $selected{'RULES'}{'subscripted'} = ''; | |
ea5c8eeb | 606 | $selected{'RULES'}{$rulessettings{'RULES'}} = "selected='selected'"; |
eadad5fd SS |
607 | $selected{'AUTOUPDATE_INTERVAL'}{'off'} = ''; |
608 | $selected{'AUTOUPDATE_INTERVAL'}{'daily'} = ''; | |
609 | $selected{'AUTOUPDATE_INTERVAL'}{'weekly'} = ''; | |
ea5c8eeb | 610 | $selected{'AUTOUPDATE_INTERVAL'}{$rulessettings{'AUTOUPDATE_INTERVAL'}} = "selected='selected'"; |
ac1cfefa MT |
611 | |
612 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
613 | ||
17726644 SS |
614 | ### Java Script ### |
615 | print <<END | |
616 | <script> | |
617 | // Tiny java script function to show/hide the rules | |
618 | // of a given category. | |
619 | function showhide(tblname) { | |
620 | \$("#" + tblname).toggle(); | |
621 | } | |
622 | </script> | |
623 | END | |
624 | ; | |
625 | ||
ac1cfefa MT |
626 | &Header::openbigbox('100%', 'left', '', $errormessage); |
627 | ||
628 | if ($errormessage) { | |
629 | &Header::openbox('100%', 'left', $Lang::tr{'error messages'}); | |
630 | print "<class name='base'>$errormessage\n"; | |
631 | print " </class>\n"; | |
632 | &Header::closebox(); | |
633 | } | |
634 | ||
87660964 | 635 | # Draw current state of the IDS |
7cc8a0e5 | 636 | &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'}); |
1504a375 | 637 | |
87660964 SS |
638 | # Check if the IDS is running and obtain the process-id. |
639 | my $pid = &IDS::ids_is_running(); | |
640 | ||
641 | # Display some useful information, if suricata daemon is running. | |
642 | if ($pid) { | |
643 | # Gather used memory. | |
644 | my $memory = &get_memory_usage($pid); | |
645 | ||
646 | print <<END; | |
647 | <table width='95%' cellspacing='0' class='tbl'> | |
648 | <tr> | |
649 | <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</strong></th> | |
650 | </tr> | |
651 | ||
652 | <tr> | |
653 | <td class='base'>$Lang::tr{'guardian daemon'}</td> | |
654 | <td align='center' colspan='2' width='75%' bgcolor='${Header::colourgreen}'><font color='white'><strong>$Lang::tr{'running'}</strong></font></td> | |
655 | </tr> | |
656 | ||
657 | <tr> | |
658 | <td class='base'></td> | |
659 | <td bgcolor='$color{'color20'}' align='center'><strong>PID</strong></td> | |
660 | <td bgcolor='$color{'color20'}' align='center'><strong>$Lang::tr{'memory'}</strong></td> | |
661 | </tr> | |
662 | ||
663 | <tr> | |
664 | <td class='base'></td> | |
665 | <td bgcolor='$color{'color22'}' align='center'>$pid</td> | |
666 | <td bgcolor='$color{'color22'}' align='center'>$memory KB</td> | |
667 | </tr> | |
668 | </table> | |
669 | END | |
670 | } else { | |
671 | # Otherwise display a hint that the service is not launched. | |
672 | print <<END; | |
673 | <table width='95%' cellspacing='0' class='tbl'> | |
674 | <tr> | |
675 | <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</strong></th> | |
676 | </tr> | |
677 | ||
678 | <tr> | |
679 | <td class='base'>$Lang::tr{'guardian daemon'}</td> | |
680 | <td align='center' width='75%' bgcolor='${Header::colourred}'><font color='white'><strong>$Lang::tr{'stopped'}</strong></font></td> | |
681 | </tr> | |
682 | </table> | |
87660964 SS |
683 | END |
684 | } | |
685 | &Header::closebox(); | |
686 | ||
01d02eb6 SS |
687 | my $rulesdate; |
688 | ||
689 | # Check if a ruleset allready has been downloaded. | |
690 | if ( -f "$IDS::rulestarball"){ | |
691 | # Call stat on the filename to obtain detailed information. | |
692 | my @Info = stat("$IDS::rulestarball"); | |
693 | ||
694 | # Grab details about the creation time. | |
695 | $rulesdate = localtime($Info[9]); | |
696 | } | |
697 | ||
87660964 SS |
698 | # Draw elements for IDS configuration. |
699 | &Header::openbox('100%', 'center', $Lang::tr{'settings'}); | |
700 | ||
ac1cfefa | 701 | print <<END |
1504a375 SS |
702 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> |
703 | <table width='100%' border='0'> | |
704 | <tr> | |
01d02eb6 | 705 | <td class='base' colspan='2'> |
1286e0d4 SS |
706 | <input type='checkbox' name='ENABLE_IDS' $checked{'ENABLE_IDS'}{'on'}>$Lang::tr{'ids activate'} $Lang::tr{'intrusion detection system'} |
707 | </td> | |
1286e0d4 | 708 | |
01d02eb6 SS |
709 | <td class='base' colspan='2'> |
710 | <input type='checkbox' name='MONITOR_TRAFFIC_ONLY' $checked{'MONITOR_TRAFFIC_ONLY'}{'on'}>$Lang::tr{'ids monitor traffic only'} | |
1504a375 | 711 | </td> |
a4ccfcbb | 712 | </tr> |
1504a375 | 713 | |
a4ccfcbb | 714 | <tr> |
01d02eb6 SS |
715 | <td><br><br></td> |
716 | <td><br><br></td> | |
717 | <td><br><br></td> | |
718 | <td><br><br></td> | |
1286e0d4 | 719 | </tr> |
a4ccfcbb SS |
720 | |
721 | <tr> | |
01d02eb6 | 722 | <td colspan='4'><b>$Lang::tr{'ids monitored interfaces'}</b><br></td> |
a4ccfcbb SS |
723 | </tr> |
724 | ||
725 | <tr> | |
ac1cfefa MT |
726 | END |
727 | ; | |
1504a375 | 728 | |
1286e0d4 SS |
729 | # Loop through the array of available networks and print config options. |
730 | foreach my $zone (@network_zones) { | |
731 | my $checked_input; | |
732 | my $checked_forward; | |
1504a375 | 733 | |
1286e0d4 SS |
734 | # Convert current zone name to upper case. |
735 | my $zone_upper = uc($zone); | |
1504a375 | 736 | |
53817b89 SS |
737 | # Set zone name. |
738 | my $zone_name = $zone; | |
739 | ||
740 | # Dirty hack to get the correct language string for the red zone. | |
741 | if ($zone eq "red") { | |
742 | $zone_name = "red1"; | |
743 | } | |
744 | ||
1286e0d4 | 745 | # Grab checkbox status from settings hash. |
a4ccfcbb | 746 | if ($idssettings{"ENABLE_IDS_$zone_upper"} eq "on") { |
1286e0d4 SS |
747 | $checked_input = "checked = 'checked'"; |
748 | } | |
1504a375 | 749 | |
1286e0d4 | 750 | print "<td class='base' width='25%'>\n"; |
99b372b5 | 751 | print "<input type='checkbox' name='ENABLE_IDS_$zone_upper' $checked_input>\n"; |
53817b89 | 752 | print " $Lang::tr{'enabled on'}<font color='$colourhash{$zone}'> $Lang::tr{$zone_name}</font>\n"; |
1286e0d4 | 753 | print "</td>\n"; |
ac1cfefa | 754 | } |
1b73b07e | 755 | |
ac1cfefa | 756 | print <<END |
1504a375 | 757 | </tr> |
ea5c8eeb | 758 | </table> |
1504a375 | 759 | |
ea5c8eeb SS |
760 | <br><br> |
761 | ||
762 | <table width='100%'> | |
763 | <tr> | |
764 | <td align='right'><input type='submit' name='IDS' value='$Lang::tr{'save'}' /></td> | |
765 | </tr> | |
766 | </table> | |
767 | </form> | |
768 | END | |
769 | ; | |
770 | ||
771 | &Header::closebox(); | |
772 | ||
773 | # Draw elements for ruleset configuration. | |
774 | &Header::openbox('100%', 'center', $Lang::tr{'ids ruleset settings'}); | |
775 | ||
ea5c8eeb SS |
776 | print <<END |
777 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
778 | <table width='100%' border='0'> | |
1504a375 | 779 | <tr> |
ea5c8eeb SS |
780 | <td><b>$Lang::tr{'ids rules update'}</b></td> |
781 | <td><b>$Lang::tr{'ids automatic rules update'}</b></td> | |
1504a375 SS |
782 | </tr> |
783 | ||
784 | <tr> | |
ea5c8eeb | 785 | <td><select name='RULES'> |
a0fa489f | 786 | <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option> |
5a3e0dca MT |
787 | <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option> |
788 | <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option> | |
789 | <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option> | |
790 | </select> | |
1504a375 | 791 | </td> |
eadad5fd | 792 | |
ea5c8eeb | 793 | <td> |
eadad5fd SS |
794 | <select name='AUTOUPDATE_INTERVAL'> |
795 | <option value='off' $selected{'AUTOUPDATE_INTERVAL'}{'off'} >$Lang::tr{'no'}</option> | |
796 | <option value='daily' $selected{'AUTOUPDATE_INTERVAL'}{'daily'} >$Lang::tr{'urlfilter daily'}</option> | |
797 | <option value='weekly' $selected{'AUTOUPDATE_INTERVAL'}{'weekly'} >$Lang::tr{'urlfilter weekly'}</option> | |
798 | </select> | |
799 | </td> | |
1504a375 SS |
800 | </tr> |
801 | ||
802 | <tr> | |
ea5c8eeb | 803 | <td colspan='2'> |
1504a375 SS |
804 | <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> |
805 | <br>$Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}</br> | |
806 | </td> | |
807 | </tr> | |
808 | ||
809 | <tr> | |
ea5c8eeb | 810 | <td colspan='2' nowrap='nowrap'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$rulessettings{'OINKCODE'}'></td> |
1504a375 SS |
811 | </tr> |
812 | ||
813 | <tr> | |
ea5c8eeb | 814 | <td> </td> |
1504a375 | 815 | |
ea5c8eeb SS |
816 | <td align='right'> |
817 | END | |
818 | ; | |
819 | # Check if a ruleset source has been configured yet. | |
820 | unless($rulessettings{'RULES'}) { | |
821 | # If no ruleset settings have been saved yet, disable the button to download / update the ruleset. | |
822 | print"<input type='submit' name='RULESET' disabled='disabled' value='$Lang::tr{'download new ruleset'}'>\n"; | |
823 | } else { | |
824 | # Ruleset setting have been saved. - Check if a ruleset already is downloaded. | |
825 | if (%idsrules) { | |
826 | # Allow to press the button and show it as "update ruleset". | |
827 | print"<input type='submit' name='RULESET' value='$Lang::tr{'update ruleset'}'>\n"; | |
828 | } else { | |
829 | # Also allow to press the button, but show it as "download new ruleset". | |
830 | print"<input type='submit' name='RULESET' value='$Lang::tr{'download new ruleset'}'>\n"; | |
831 | } | |
832 | } | |
833 | print <<END; | |
834 | <input type='submit' name='RULESET' value='$Lang::tr{'save'}'> | |
835 | </td> | |
1504a375 | 836 | |
1504a375 SS |
837 | </tr> |
838 | </table> | |
ac1cfefa MT |
839 | </form> |
840 | END | |
841 | ; | |
842 | ||
ac1cfefa | 843 | &Header::closebox(); |
fbfdb241 | 844 | |
b7e29743 SS |
845 | # |
846 | # Whitelist / Ignorelist | |
847 | # | |
848 | &Header::openbox('100%', 'center', $Lang::tr{'guardian ignored hosts'}); | |
849 | ||
850 | print <<END; | |
851 | <table width='100%'> | |
852 | <tr> | |
853 | <td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'ip address'}</b></td> | |
854 | <td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'remark'}</b></td> | |
855 | <td class='base' colspan='3' bgcolor='$color{'color20'}'></td> | |
856 | </tr> | |
857 | END | |
858 | # Check if some hosts have been added to be ignored. | |
859 | if (keys (%ignored)) { | |
860 | my $col = ""; | |
861 | ||
862 | # Loop through all entries of the hash. | |
863 | while( (my $key) = each %ignored) { | |
864 | # Assign data array positions to some nice variable names. | |
865 | my $address = $ignored{$key}[0]; | |
866 | my $remark = $ignored{$key}[1]; | |
867 | my $status = $ignored{$key}[2]; | |
868 | ||
869 | # Check if the key (id) number is even or not. | |
870 | if ($cgiparams{'ID'} eq $key) { | |
871 | $col="bgcolor='${Header::colouryellow}'"; | |
872 | } elsif ($key % 2) { | |
873 | $col="bgcolor='$color{'color22'}'"; | |
874 | } else { | |
875 | $col="bgcolor='$color{'color20'}'"; | |
876 | } | |
877 | ||
878 | # Choose icon for the checkbox. | |
879 | my $gif; | |
880 | my $gdesc; | |
881 | ||
882 | # Check if the status is enabled and select the correct image and description. | |
883 | if ($status eq 'enabled' ) { | |
884 | $gif = 'on.gif'; | |
885 | $gdesc = $Lang::tr{'click to disable'}; | |
886 | } else { | |
887 | $gif = 'off.gif'; | |
888 | $gdesc = $Lang::tr{'click to enable'}; | |
889 | } | |
890 | ||
891 | print <<END; | |
892 | <tr> | |
893 | <td width='20%' class='base' $col>$address</td> | |
894 | <td width='65%' class='base' $col>$remark</td> | |
895 | ||
896 | <td align='center' $col> | |
897 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
898 | <input type='hidden' name='WHITELIST' value='$Lang::tr{'toggle enable disable'}' /> | |
899 | <input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$gif' alt='$gdesc' title='$gdesc' /> | |
900 | <input type='hidden' name='ID' value='$key' /> | |
901 | </form> | |
902 | </td> | |
903 | ||
904 | <td align='center' $col> | |
905 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
906 | <input type='hidden' name='WHITELIST' value='$Lang::tr{'edit'}' /> | |
907 | <input type='image' name='$Lang::tr{'edit'}' src='/images/edit.gif' alt='$Lang::tr{'edit'}' title='$Lang::tr{'edit'}' /> | |
908 | <input type='hidden' name='ID' value='$key' /> | |
909 | </form> | |
910 | </td> | |
911 | ||
912 | <td align='center' $col> | |
913 | <form method='post' name='$key' action='$ENV{'SCRIPT_NAME'}'> | |
914 | <input type='image' name='$Lang::tr{'remove'}' src='/images/delete.gif' title='$Lang::tr{'remove'}' alt='$Lang::tr{'remove'}'> | |
915 | <input type='hidden' name='ID' value='$key'> | |
916 | <input type='hidden' name='WHITELIST' value='$Lang::tr{'remove'}'> | |
917 | </form> | |
918 | </td> | |
919 | </tr> | |
920 | END | |
921 | } | |
922 | } else { | |
923 | # Print notice that currently no hosts are ignored. | |
924 | print "<tr>\n"; | |
925 | print "<td class='base' colspan='2'>$Lang::tr{'guardian no entries'}</td>\n"; | |
926 | print "</tr>\n"; | |
927 | } | |
928 | ||
929 | print "</table>\n"; | |
930 | ||
931 | # Section to add new elements or edit existing ones. | |
932 | print <<END; | |
933 | <br> | |
934 | <hr> | |
935 | <br> | |
936 | ||
937 | <div align='center'> | |
938 | <table width='100%'> | |
939 | END | |
940 | ||
941 | # Assign correct headline and button text. | |
942 | my $buttontext; | |
943 | my $entry_address; | |
944 | my $entry_remark; | |
945 | ||
946 | # Check if an ID (key) has been given, in this case an existing entry should be edited. | |
947 | if ($cgiparams{'ID'} ne '') { | |
948 | $buttontext = $Lang::tr{'update'}; | |
949 | print "<tr><td class='boldbase' colspan='3'><b>$Lang::tr{'update'}</b></td></tr>\n"; | |
950 | ||
951 | # Grab address and remark for the given key. | |
952 | $entry_address = $ignored{$cgiparams{'ID'}}[0]; | |
953 | $entry_remark = $ignored{$cgiparams{'ID'}}[1]; | |
954 | } else { | |
955 | $buttontext = $Lang::tr{'add'}; | |
956 | print "<tr><td class='boldbase' colspan='3'><b>$Lang::tr{'dnsforward add a new entry'}</b></td></tr>\n"; | |
957 | } | |
958 | ||
959 | print <<END; | |
960 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
961 | <input type='hidden' name='ID' value='$cgiparams{'ID'}'> | |
962 | <tr> | |
963 | <td width='30%'>$Lang::tr{'ip address'}: </td> | |
964 | <td width='50%'><input type='text' name='IGNORE_ENTRY_ADDRESS' value='$entry_address' size='24' /></td> | |
965 | ||
966 | <td width='30%'>$Lang::tr{'remark'}: </td> | |
967 | <td wicth='50%'><input type='text' name=IGNORE_ENTRY_REMARK value='$entry_remark' size='24' /></td> | |
968 | <td align='center' width='20%'><input type='submit' name='WHITELIST' value='$buttontext' /></td> | |
969 | </tr> | |
970 | </form> | |
971 | </table> | |
972 | </div> | |
973 | END | |
974 | ||
975 | &Header::closebox(); | |
976 | ||
80bcd4dd SS |
977 | # Only show the section for configuring the ruleset if one is present. |
978 | if (%idsrules) { | |
979 | &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'}); | |
298723b9 | 980 | |
80bcd4dd | 981 | print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n"; |
ce0e83b3 | 982 | |
80bcd4dd SS |
983 | # Output display table for rule files |
984 | print "<table width='100%'>\n"; | |
f7fcd1c0 | 985 | |
80bcd4dd SS |
986 | # Loop over each rule file |
987 | foreach my $rulefile (sort keys(%idsrules)) { | |
988 | my $rulechecked = ''; | |
3ffee04b | 989 | |
80bcd4dd SS |
990 | # Check if rule file is enabled |
991 | if ($idsrules{$rulefile}{'Rulefile'}{'State'} eq 'on') { | |
992 | $rulechecked = 'CHECKED'; | |
993 | } | |
994 | ||
0a1bba1a SS |
995 | # Convert rulefile name into category name. |
996 | my $categoryname = &_rulefile_to_category($rulefile); | |
997 | ||
80bcd4dd SS |
998 | # Table and rows for the rule files. |
999 | print"<tr>\n"; | |
1000 | print"<td class='base' width='5%'>\n"; | |
1001 | print"<input type='checkbox' name='$rulefile' $rulechecked>\n"; | |
1002 | print"</td>\n"; | |
1003 | print"<td class='base' width='90%'><b>$rulefile</b></td>\n"; | |
1004 | print"<td class='base' width='5%' align='right'>\n"; | |
0a1bba1a | 1005 | print"<a href=\"javascript:showhide('$categoryname')\">SHOW</a>\n"; |
80bcd4dd SS |
1006 | print"</td>\n"; |
1007 | print"</tr>\n"; | |
1008 | ||
1009 | # Rows which will be hidden per default and will contain the single rules. | |
0a1bba1a | 1010 | print"<tr style='display:none' id='$categoryname'>\n"; |
80bcd4dd | 1011 | print"<td colspan='3'>\n"; |
17726644 | 1012 | |
f7fcd1c0 | 1013 | # Local vars |
80bcd4dd SS |
1014 | my $lines; |
1015 | my $rows; | |
1016 | my $col; | |
f9c2147d | 1017 | |
80bcd4dd SS |
1018 | # New table for the single rules. |
1019 | print "<table width='100%'>\n"; | |
e5738079 | 1020 | |
80bcd4dd SS |
1021 | # Loop over rule file rules |
1022 | foreach my $sid (sort {$a <=> $b} keys(%{$idsrules{$rulefile}})) { | |
1023 | # Local vars | |
1024 | my $ruledefchecked = ''; | |
3ffee04b | 1025 | |
80bcd4dd SS |
1026 | # Skip rulefile itself. |
1027 | next if ($sid eq "Rulefile"); | |
f7fcd1c0 | 1028 | |
80bcd4dd SS |
1029 | # If 2 rules have been displayed, start a new row |
1030 | if (($lines % 2) == 0) { | |
1031 | print "</tr><tr>\n"; | |
1032 | ||
1033 | # Increase rows by once. | |
1034 | $rows++; | |
1035 | } | |
1036 | ||
1037 | # Colour lines. | |
1038 | if ($rows % 2) { | |
1039 | $col="bgcolor='$color{'color20'}'"; | |
1040 | } else { | |
1041 | $col="bgcolor='$color{'color22'}'"; | |
1042 | } | |
f7fcd1c0 | 1043 | |
80bcd4dd SS |
1044 | # Set rule state |
1045 | if ($idsrules{$rulefile}{$sid}{'State'} eq 'on') { | |
1046 | $ruledefchecked = 'CHECKED'; | |
1047 | } | |
1048 | ||
1049 | # Create rule checkbox and display rule description | |
1050 | print "<td class='base' width='5%' align='right' $col>\n"; | |
1051 | print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n"; | |
1052 | print "</td>\n"; | |
1053 | print "<td class='base' width='45%' $col>$idsrules{$rulefile}{$sid}{'Description'}</td>"; | |
1054 | ||
1055 | # Increment rule count | |
1056 | $lines++; | |
f7fcd1c0 | 1057 | } |
3ffee04b | 1058 | |
80bcd4dd SS |
1059 | # If do not have a second rule for row, create empty cell |
1060 | if (($lines % 2) != 0) { | |
1061 | print "<td class='base'></td>"; | |
1062 | } | |
17726644 | 1063 | |
80bcd4dd SS |
1064 | # Close display table |
1065 | print "</tr></table></td></tr>"; | |
f7fcd1c0 SS |
1066 | } |
1067 | ||
1068 | # Close display table | |
80bcd4dd | 1069 | print "</table>"; |
17726644 | 1070 | |
f7fcd1c0 | 1071 | print <<END |
2999f1d2 CS |
1072 | <table width='100%'> |
1073 | <tr> | |
298723b9 | 1074 | <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'> |
3ffee04b CS |
1075 | <!-- space for future online help link --> |
1076 | </td> | |
2999f1d2 CS |
1077 | </tr> |
1078 | </table> | |
298723b9 | 1079 | </form> |
3ffee04b CS |
1080 | END |
1081 | ; | |
80bcd4dd SS |
1082 | &Header::closebox(); |
1083 | } | |
1084 | ||
ac1cfefa MT |
1085 | &Header::closebigbox(); |
1086 | &Header::closepage(); | |
1087 | ||
27760092 SS |
1088 | # |
1089 | ## A function to display a notice, to lock the webpage and | |
1090 | ## tell the user which action currently will be performed. | |
1091 | # | |
1092 | sub working_notice ($) { | |
1093 | my ($message) = @_; | |
1094 | ||
1095 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
1096 | &Header::openbigbox('100%', 'left', '', $errormessage); | |
1097 | &Header::openbox( 'Waiting', 1,); | |
1098 | print <<END; | |
1099 | <table> | |
1100 | <tr> | |
1101 | <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td> | |
1102 | <td>$message</td> | |
1103 | </tr> | |
1104 | </table> | |
1105 | END | |
1106 | &Header::closebox(); | |
1107 | &Header::closebigbox(); | |
1108 | &Header::closepage(); | |
1109 | } | |
1110 | ||
3983aebd SS |
1111 | # |
1112 | ## A tiny function to perform a reload of the webpage after one second. | |
1113 | # | |
1114 | sub reload () { | |
1115 | print "<meta http-equiv='refresh' content='1'>\n"; | |
1116 | ||
1117 | # Stop the script. | |
1118 | exit; | |
a70d269a SS |
1119 | } |
1120 | ||
25f5cb0d SS |
1121 | # |
1122 | ## Private function to read-in and parse rules of a given rulefile. | |
1123 | # | |
1124 | ## The given file will be read, parsed and all valid rules will be stored by ID, | |
9d18656b | 1125 | ## message/description and it's state in the idsrules hash. |
25f5cb0d | 1126 | # |
3da6e01b SS |
1127 | sub readrulesfile ($) { |
1128 | my $rulefile = shift; | |
1129 | ||
1130 | # Open rule file and read in contents | |
298ef5ba | 1131 | open(RULEFILE, "$IDS::rulespath/$rulefile") or die "Unable to read $rulefile!"; |
3da6e01b SS |
1132 | |
1133 | # Store file content in an array. | |
1134 | my @lines = <RULEFILE>; | |
1135 | ||
1136 | # Close file. | |
1137 | close(RULEFILE); | |
1138 | ||
1139 | # Loop over rule file contents | |
1140 | foreach my $line (@lines) { | |
1141 | # Remove whitespaces. | |
1142 | chomp $line; | |
1143 | ||
1144 | # Skip blank lines. | |
1145 | next if ($line =~ /^\s*$/); | |
1146 | ||
1147 | # Local vars. | |
1148 | my $sid; | |
1149 | my $msg; | |
1150 | ||
1151 | # Gather rule sid and message from the ruleline. | |
1152 | if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) { | |
1153 | $msg = $1; | |
1154 | $sid = $2; | |
1155 | ||
1156 | # Check if a rule has been found. | |
1157 | if ($sid && $msg) { | |
9d18656b SS |
1158 | # Add rule to the idsrules hash. |
1159 | $idsrules{$rulefile}{$sid}{'Description'} = $msg; | |
3da6e01b SS |
1160 | |
1161 | # Grab status of the rule. Check if ruleline starts with a "dash". | |
1162 | if ($line =~ /^\#/) { | |
1163 | # If yes, the rule is disabled. | |
9d18656b | 1164 | $idsrules{$rulefile}{$sid}{'State'} = "off"; |
3da6e01b SS |
1165 | } else { |
1166 | # Otherwise the rule is enabled. | |
9d18656b | 1167 | $idsrules{$rulefile}{$sid}{'State'} = "on"; |
3da6e01b SS |
1168 | } |
1169 | } | |
1170 | } | |
b7e29743 | 1171 | } |
3da6e01b | 1172 | } |
87660964 | 1173 | |
8d2f6b0b SS |
1174 | # |
1175 | ## Function to get the used memory of a given process-id. | |
1176 | # | |
87660964 | 1177 | sub get_memory_usage($) { |
004b13b7 | 1178 | my ($pid) = @_; |
87660964 | 1179 | |
004b13b7 | 1180 | my $memory = 0; |
87660964 | 1181 | |
004b13b7 | 1182 | # Try to open the status file for the given process-id on the pseudo |
87660964 | 1183 | # file system proc. |
004b13b7 SS |
1184 | if (open(FILE, "/proc/$pid/status")) { |
1185 | # Loop through the entire file. | |
1186 | while (<FILE>) { | |
1187 | # Splitt current line content and store them into variables. | |
1188 | my ($key, $value) = split(":", $_, 2); | |
1189 | ||
1190 | # Check if the current key is the one which contains the memory usage. | |
1191 | # The wanted one is VmRSS which contains the Real-memory (resident set) | |
1192 | # of the entire process. | |
1193 | if ($key eq "VmRSS") { | |
1194 | # Found the memory usage add it to the memory variable. | |
1195 | $memory += $value; | |
1196 | ||
1197 | # Break the loop. | |
1198 | last; | |
1199 | } | |
1200 | } | |
87660964 SS |
1201 | |
1202 | # Close file handle. | |
004b13b7 | 1203 | close(FILE); |
87660964 SS |
1204 | |
1205 | # Return memory usage. | |
1206 | return $memory; | |
004b13b7 | 1207 | } |
87660964 SS |
1208 | |
1209 | # If the file could not be open, return nothing. | |
1210 | return; | |
1211 | } | |
1212 | ||
b7e29743 SS |
1213 | # |
1214 | ## Function to generate the rules file with whitelisted addresses. | |
1215 | # | |
1216 | sub GenerateIgnoreFile() { | |
1217 | my %ignored = (); | |
1218 | ||
1219 | # SID range 1000000-1999999 Reserved for Local Use | |
1220 | # Put your custom rules in this range to avoid conflicts | |
1221 | my $sid = 1500000; | |
1222 | ||
1223 | # Read-in ignoredfile. | |
b02e30fd | 1224 | &General::readhasharray($IDS::ignored_file, \%ignored); |
b7e29743 SS |
1225 | |
1226 | # Open ignorefile for writing. | |
b02e30fd | 1227 | open(FILE, ">$IDS::whitelist_file") or die "Could not write to $IDS::whitelist_file. $!\n"; |
b7e29743 SS |
1228 | |
1229 | # Config file header. | |
1230 | print FILE "# Autogenerated file.\n"; | |
1231 | print FILE "# All user modifications will be overwritten.\n\n"; | |
1232 | ||
1233 | # Add all user defined addresses to the whitelist. | |
1234 | # | |
1235 | # Check if the hash contains any elements. | |
1236 | if (keys (%ignored)) { | |
1237 | # Loop through the entire hash and write the host/network | |
1238 | # and remark to the ignore file. | |
1239 | while ( (my $key) = each %ignored) { | |
1240 | my $address = $ignored{$key}[0]; | |
1241 | my $remark = $ignored{$key}[1]; | |
1242 | my $status = $ignored{$key}[2]; | |
1243 | ||
1244 | # Check if the status of the entry is "enabled". | |
1245 | if ($status eq "enabled") { | |
1246 | # Check if the address/network is valid. | |
1247 | if ((&General::validip($address)) || (&General::validipandmask($address))) { | |
1248 | # Write rule line to the file to pass any traffic from this IP | |
1249 | print FILE "pass ip $address any -> any any (msg:\"pass all traffic from/to $address\"\; sid:$sid\;)\n"; | |
1250 | ||
1251 | # Increment sid. | |
1252 | $sid++; | |
1253 | } | |
1254 | } | |
1255 | } | |
1256 | } | |
1257 | ||
1258 | close(FILE); | |
1259 | } | |
1260 | ||
a5d61752 SS |
1261 | # |
1262 | ## Function to read-in the given enabled or disables sids file. | |
1263 | # | |
1264 | sub read_enabled_disabled_sids_file($) { | |
1265 | my ($file) = @_; | |
1266 | ||
1267 | # Temporary hash to store the sids and their state. It will be | |
1268 | # returned at the end of this function. | |
1269 | my %temphash; | |
1270 | ||
1271 | # Open the given filename. | |
1272 | open(FILE, "$file") or die "Could not open $file. $!\n"; | |
1273 | ||
1274 | # Loop through the file. | |
1275 | while(<FILE>) { | |
1276 | # Remove newlines. | |
1277 | chomp $_; | |
1278 | ||
1279 | # Skip blank lines. | |
1280 | next if ($_ =~ /^\s*$/); | |
1281 | ||
1282 | # Skip coments. | |
1283 | next if ($_ =~ /^\#/); | |
1284 | ||
1285 | # Splitt line into sid and state part. | |
1286 | my ($state, $sid) = split(" ", $_); | |
1287 | ||
1288 | # Skip line if the sid is not numeric. | |
1289 | next unless ($sid =~ /\d+/ ); | |
1290 | ||
1291 | # Check if the sid was enabled. | |
1292 | if ($state eq "enablesid") { | |
1293 | # Add the sid and its state as enabled to the temporary hash. | |
1294 | $temphash{$sid} = "enabled"; | |
1295 | # Check if the sid was disabled. | |
1296 | } elsif ($state eq "disablesid") { | |
1297 | # Add the sid and its state as disabled to the temporary hash. | |
1298 | $temphash{$sid} = "disabled"; | |
1299 | # Invalid state - skip the current sid and state. | |
1300 | } else { | |
1301 | next; | |
1302 | } | |
1303 | } | |
1304 | ||
1305 | # Close filehandle. | |
1306 | close(FILE); | |
1307 | ||
1308 | # Return the hash. | |
1309 | return %temphash; | |
1310 | } | |
0a1bba1a SS |
1311 | |
1312 | # | |
1313 | ## Private function to convert a given rulefile to a category name. | |
1314 | ## ( No file extension anymore and if the name contained a dot, it | |
1315 | ## would be replaced by a underline sign.) | |
1316 | # | |
1317 | sub _rulefile_to_category($) { | |
1318 | my ($filename) = @_; | |
1319 | ||
1320 | # Splitt the filename into single chunks and store them in a | |
1321 | # temorary array. | |
1322 | my @parts = split(/\./, $filename); | |
1323 | ||
1324 | # Return / Remove last element of the temporary array. | |
1325 | # This removes the file extension. | |
1326 | pop @parts; | |
1327 | ||
1328 | # Join together the single elements of the temporary array. | |
1329 | # If these are more than one, use a "underline" for joining. | |
1330 | my $category = join '_', @parts; | |
1331 | ||
1332 | # Return the converted filename. | |
1333 | return $category; | |
1334 | } |