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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. | |
9283e9b9 | 134 | &IDS::generate_ignore_file(); |
b7e29743 SS |
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. | |
9283e9b9 | 177 | &IDS::generate_ignore_file(); |
b7e29743 SS |
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. | |
9283e9b9 | 204 | &IDS::generate_ignore_file(); |
b7e29743 SS |
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 | ||
9d18656b | 228 | ## Grab all available snort rules and store them in the idsrules hash. |
3da6e01b | 229 | # |
422204ff | 230 | # Open snort rules directory and do a directory listing. |
298ef5ba | 231 | opendir(DIR, $IDS::rulespath) or die $!; |
422204ff SS |
232 | # Loop through the direcory. |
233 | while (my $file = readdir(DIR)) { | |
234 | ||
235 | # We only want files. | |
298ef5ba | 236 | next unless (-f "$IDS::rulespath/$file"); |
422204ff SS |
237 | |
238 | # Ignore empty files. | |
298ef5ba | 239 | next if (-z "$IDS::rulespath/$file"); |
422204ff | 240 | |
3da6e01b | 241 | # Use a regular expression to find files ending in .rules |
422204ff SS |
242 | next unless ($file =~ m/\.rules$/); |
243 | ||
3da6e01b | 244 | # Ignore files which are not read-able. |
298ef5ba | 245 | next unless (-R "$IDS::rulespath/$file"); |
395e3b90 | 246 | |
b7e29743 SS |
247 | # Skip whitelist rules file. |
248 | next if( $file eq "whitelist.rules"); | |
249 | ||
3da6e01b | 250 | # Call subfunction to read-in rulefile and add rules to |
9d18656b | 251 | # the idsrules hash. |
3da6e01b | 252 | &readrulesfile("$file"); |
395e3b90 | 253 | } |
395e3b90 | 254 | |
3da6e01b | 255 | closedir(DIR); |
395e3b90 | 256 | |
e5738079 SS |
257 | # Gather used rulefiles. |
258 | # | |
259 | # Check if the file for activated rulefiles is not empty. | |
b02e30fd | 260 | if(-f $IDS::used_rulefiles_file) { |
e5738079 | 261 | # Open the file for used rulefile and read-in content. |
b02e30fd | 262 | open(FILE, $IDS::used_rulefiles_file) or die "Could not open $IDS::used_rulefiles_file. $!\n"; |
e5738079 SS |
263 | |
264 | # Read-in content. | |
265 | my @lines = <FILE>; | |
266 | ||
267 | # Close file. | |
268 | close(FILE); | |
269 | ||
270 | # Loop through the array. | |
271 | foreach my $line (@lines) { | |
272 | # Remove newlines. | |
273 | chomp($line); | |
274 | ||
275 | # Skip comments. | |
276 | next if ($line =~ /\#/); | |
277 | ||
278 | # Skip blank lines. | |
279 | next if ($line =~ /^\s*$/); | |
280 | ||
281 | # Gather rule sid and message from the ruleline. | |
101c8881 | 282 | if ($line =~ /.*- (.*)/) { |
e5738079 SS |
283 | my $rulefile = $1; |
284 | ||
43ab7d9c SS |
285 | # Check if the current rulefile exists in the %idsrules hash. |
286 | # If not, the file probably does not exist anymore or contains | |
287 | # no rules. | |
288 | if($idsrules{$rulefile}) { | |
289 | # Add the rulefile state to the %idsrules hash. | |
290 | $idsrules{$rulefile}{'Rulefile'}{'State'} = "on"; | |
291 | } | |
e5738079 SS |
292 | } |
293 | } | |
294 | } | |
295 | ||
ea5c8eeb SS |
296 | # Save ruleset configuration. |
297 | if ($cgiparams{'RULESET'} eq $Lang::tr{'save'}) { | |
298 | my %oldsettings; | |
613f58fb | 299 | my %rulesetsources; |
ea5c8eeb SS |
300 | |
301 | # Read-in current (old) IDS settings. | |
b02e30fd | 302 | &General::readhash("$IDS::rules_settings_file", \%oldsettings); |
ea5c8eeb | 303 | |
613f58fb SS |
304 | # Get all available ruleset locations. |
305 | &General::readhash("$IDS::rulesetsourcesfile", \%rulesetsources); | |
306 | ||
ea5c8eeb SS |
307 | # Prevent form name from been stored in conf file. |
308 | delete $cgiparams{'RULESET'}; | |
309 | ||
613f58fb SS |
310 | # Grab the URL based on the choosen vendor. |
311 | my $url = $rulesetsources{$cgiparams{'RULES'}}; | |
312 | ||
313 | # Check if the choosen vendor (URL) requires an subscription/oinkcode. | |
314 | if ($url =~ /\<oinkcode\>/ ) { | |
315 | # Check if an subscription/oinkcode has been provided. | |
316 | if ($cgiparams{'OINKCODE'}) { | |
317 | # Check if the oinkcode contains unallowed chars. | |
318 | unless ($cgiparams{'OINKCODE'} =~ /^[a-z0-9]+$/) { | |
319 | $errormessage = $Lang::tr{'invalid input for oink code'}; | |
320 | } | |
321 | } else { | |
322 | # Print an error message, that an subsription/oinkcode is required for this | |
323 | # vendor. | |
324 | $errormessage = $Lang::tr{'ids oinkcode required'}; | |
ea5c8eeb SS |
325 | } |
326 | } | |
327 | ||
328 | # Go on if there are no error messages. | |
329 | if (!$errormessage) { | |
330 | # Store settings into settings file. | |
b02e30fd | 331 | &General::writehash("$IDS::rules_settings_file", \%cgiparams); |
ea5c8eeb | 332 | |
f644a167 SS |
333 | # Check if the the automatic rule update hass been touched. |
334 | if($cgiparams{'AUTOUPDATE_INTERVAL'} ne $oldsettings{'AUTOUPDATE_INTERVAL'}) { | |
335 | # Call suricatactrl to set the new interval. | |
336 | &IDS::call_suricatactrl("cron", $cgiparams{'AUTOUPDATE_INTERVAL'}); | |
5fd2e9d6 SS |
337 | } |
338 | ||
f644a167 SS |
339 | # Check if a ruleset is present - if not or the source has been changed download it. |
340 | if((! %idsrules) || ($oldsettings{'RULES'} ne $cgiparams{'RULES'})) { | |
341 | # Check if the red device is active. | |
342 | unless (-e "${General::swroot}/red/active") { | |
343 | $errormessage = "$Lang::tr{'could not download latest updates'} - $Lang::tr{'system is offline'}"; | |
5fd2e9d6 SS |
344 | } |
345 | ||
f644a167 SS |
346 | # Check if enought free disk space is availabe. |
347 | if(&IDS::checkdiskspace()) { | |
348 | $errormessage = "$Lang::tr{'not enough disk space'}"; | |
97870bf2 SS |
349 | } |
350 | ||
f644a167 SS |
351 | # Check if any errors happend. |
352 | unless ($errormessage) { | |
353 | # Lock the webpage and print notice about downloading | |
354 | # a new ruleset. | |
355 | &working_notice("$Lang::tr{'snort working'}"); | |
356 | ||
357 | # Call subfunction to download the ruleset. | |
358 | if(&IDS::downloadruleset()) { | |
359 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
360 | ||
361 | # Call function to store the errormessage. | |
362 | &IDS::_store_error_message($errormessage); | |
363 | } else { | |
364 | # Call subfunction to launch oinkmaster. | |
365 | &IDS::oinkmaster(); | |
366 | } | |
367 | ||
368 | # Check if the IDS is running. | |
369 | if(&IDS::ids_is_running()) { | |
370 | # Call suricatactrl to stop the IDS - because of the changed | |
371 | # ruleset - the use has to configure it before suricata can be | |
372 | # used again. | |
373 | &IDS::call_suricatactrl("stop"); | |
374 | } | |
375 | ||
376 | # Perform a reload of the page. | |
377 | &reload(); | |
378 | } | |
5fd2e9d6 SS |
379 | } |
380 | } | |
381 | ||
298723b9 | 382 | # Save ruleset. |
ea5c8eeb | 383 | } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'update'}) { |
d2212836 | 384 | # Arrays to store which rulefiles have been enabled and will be used. |
e5738079 | 385 | my @enabled_rulefiles; |
298723b9 | 386 | |
d2212836 SS |
387 | # Hash to store the user-enabled and disabled sids. |
388 | my %enabled_disabled_sids; | |
389 | ||
9d18656b SS |
390 | # Loop through the hash of idsrules. |
391 | foreach my $rulefile(keys %idsrules) { | |
e5738079 SS |
392 | # Check if the rulefile is enabled. |
393 | if ($cgiparams{$rulefile} eq "on") { | |
394 | # Add rulefile to the array of enabled rulefiles. | |
395 | push(@enabled_rulefiles, $rulefile); | |
b65b5ef3 SS |
396 | |
397 | # Drop item from cgiparams hash. | |
398 | delete $cgiparams{$rulefile}; | |
e5738079 | 399 | } |
466c6779 | 400 | } |
e5738079 | 401 | |
d2212836 SS |
402 | # Read-in the files for enabled/disabled sids. |
403 | # This will be done by calling the read_enabled_disabled_sids_file function two times | |
404 | # and merge the returned hashes together into the enabled_disabled_sids hash. | |
405 | %enabled_disabled_sids = ( | |
b02e30fd SS |
406 | &read_enabled_disabled_sids_file($IDS::disabled_sids_file), |
407 | &read_enabled_disabled_sids_file($IDS::enabled_sids_file)); | |
d2212836 | 408 | |
9d18656b SS |
409 | # Loop through the hash of idsrules. |
410 | foreach my $rulefile (keys %idsrules) { | |
298723b9 | 411 | # Loop through the single rules of the rulefile. |
9d18656b | 412 | foreach my $sid (keys %{$idsrules{$rulefile}}) { |
c51a044a SS |
413 | # Skip the current sid if it is not numeric. |
414 | next unless ($sid =~ /\d+/ ); | |
415 | ||
298723b9 SS |
416 | # Check if there exists a key in the cgiparams hash for this sid. |
417 | if (exists($cgiparams{$sid})) { | |
418 | # Look if the rule is disabled. | |
9d18656b | 419 | if ($idsrules{$rulefile}{$sid}{'State'} eq "off") { |
298723b9 SS |
420 | # Check if the state has been set to 'on'. |
421 | if ($cgiparams{$sid} eq "on") { | |
d2212836 SS |
422 | # Add/Modify the sid to/in the enabled_disabled_sids hash. |
423 | $enabled_disabled_sids{$sid} = "enabled"; | |
298723b9 SS |
424 | |
425 | # Drop item from cgiparams hash. | |
60333473 | 426 | delete $cgiparams{$rulefile}{$sid}; |
298723b9 SS |
427 | } |
428 | } | |
429 | } else { | |
430 | # Look if the rule is enabled. | |
9d18656b | 431 | if ($idsrules{$rulefile}{$sid}{'State'} eq "on") { |
298723b9 SS |
432 | # Check if the state is 'on' and should be disabled. |
433 | # In this case there is no entry | |
434 | # for the sid in the cgiparams hash. | |
d2212836 SS |
435 | # Add/Modify it to/in the enabled_disabled_sids hash. |
436 | $enabled_disabled_sids{$sid} = "disabled"; | |
298723b9 SS |
437 | |
438 | # Drop item from cgiparams hash. | |
60333473 | 439 | delete $cgiparams{$rulefile}{$sid}; |
298723b9 SS |
440 | } |
441 | } | |
442 | } | |
443 | } | |
444 | ||
37659505 | 445 | # Open enabled sid's file for writing. |
b02e30fd | 446 | open(ENABLED_FILE, ">$IDS::enabled_sids_file") or die "Could not write to $IDS::enabled_sids_file. $!\n"; |
37659505 SS |
447 | |
448 | # Open disabled sid's file for writing. | |
b02e30fd | 449 | open(DISABLED_FILE, ">$IDS::disabled_sids_file") or die "Could not write to $IDS::disabled_sids_file. $!\n"; |
d2212836 SS |
450 | |
451 | # Write header to the files. | |
452 | print ENABLED_FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
453 | print DISABLED_FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
454 | ||
455 | # Check if the hash for enabled/disabled files contains any entries. | |
456 | if (%enabled_disabled_sids) { | |
457 | # Loop through the hash. | |
458 | foreach my $sid (keys %enabled_disabled_sids) { | |
459 | # Check if the sid is enabled. | |
460 | if ($enabled_disabled_sids{$sid} eq "enabled") { | |
461 | # Print the sid to the enabled_sids file. | |
462 | print ENABLED_FILE "enablesid $sid\n"; | |
463 | # Check if the sid is disabled. | |
464 | } elsif ($enabled_disabled_sids{$sid} eq "disabled") { | |
465 | # Print the sid to the disabled_sids file. | |
466 | print DISABLED_FILE "disablesid $sid\n"; | |
467 | # Something strange happende - skip the current sid. | |
468 | } else { | |
469 | next; | |
470 | } | |
37659505 SS |
471 | } |
472 | } | |
298723b9 | 473 | |
d2212836 SS |
474 | # Close file for enabled_sids after writing. |
475 | close(ENABLED_FILE); | |
476 | ||
477 | # Close file for disabled_sids after writing. | |
478 | close(DISABLED_FILE); | |
e5738079 | 479 | |
b02e30fd SS |
480 | # Call function to generate and write the used rulefiles file. |
481 | &IDS::write_used_rulefiles_file(@enabled_rulefiles); | |
52599865 | 482 | |
27760092 SS |
483 | # Lock the webpage and print message. |
484 | &working_notice("$Lang::tr{'snort working'}"); | |
485 | ||
52599865 | 486 | # Call oinkmaster to alter the ruleset. |
27760092 SS |
487 | &IDS::oinkmaster(); |
488 | ||
e2e7880d | 489 | # Check if the IDS is running. |
5a28e721 | 490 | if(&IDS::ids_is_running()) { |
e2e7880d SS |
491 | # Call suricatactrl to perform a reload. |
492 | &IDS::call_suricatactrl("reload"); | |
493 | } | |
494 | ||
27760092 SS |
495 | # Reload page. |
496 | &reload(); | |
52599865 SS |
497 | |
498 | # Download new ruleset. | |
5fd2e9d6 | 499 | } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'update ruleset'}) { |
43263ea6 SS |
500 | # Check if the red device is active. |
501 | unless (-e "${General::swroot}/red/active") { | |
013274d7 | 502 | $errormessage = "$Lang::tr{'could not download latest updates'} - $Lang::tr{'system is offline'}"; |
43263ea6 | 503 | } |
52599865 | 504 | |
3983aebd | 505 | # Check if enought free disk space is availabe. |
434001d0 SS |
506 | if(&IDS::checkdiskspace()) { |
507 | $errormessage = "$Lang::tr{'not enough disk space'}"; | |
508 | } | |
52599865 | 509 | |
43263ea6 SS |
510 | # Check if any errors happend. |
511 | unless ($errormessage) { | |
27760092 SS |
512 | # Lock the webpage and print notice about downloading |
513 | # a new ruleset. | |
514 | &working_notice("$Lang::tr{'snort working'}"); | |
3983aebd | 515 | |
43263ea6 | 516 | # Call subfunction to download the ruleset. |
434001d0 SS |
517 | if(&IDS::downloadruleset()) { |
518 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
8f22237b | 519 | |
3983aebd | 520 | # Call function to store the errormessage. |
434001d0 | 521 | &IDS::_store_error_message($errormessage); |
52599865 | 522 | |
3983aebd SS |
523 | # Preform a reload of the page. |
524 | &reload(); | |
525 | } else { | |
526 | # Call subfunction to launch oinkmaster. | |
527 | &IDS::oinkmaster(); | |
43263ea6 | 528 | |
e2e7880d | 529 | # Check if the IDS is running. |
5a28e721 | 530 | if(&IDS::ids_is_running()) { |
e2e7880d SS |
531 | # Call suricatactrl to perform a reload. |
532 | &IDS::call_suricatactrl("reload"); | |
533 | } | |
534 | ||
3983aebd SS |
535 | # Perform a reload of the page. |
536 | &reload(); | |
537 | } | |
52599865 | 538 | } |
a232b58c | 539 | # Save snort settings. |
e0bfd338 | 540 | } elsif ($cgiparams{'IDS'} eq $Lang::tr{'save'}) { |
bbb6efae SS |
541 | my %oldidssettings; |
542 | my $reload_page; | |
ebdd0f9a | 543 | my $monitored_zones = 0; |
bbb6efae SS |
544 | |
545 | # Read-in current (old) IDS settings. | |
b02e30fd | 546 | &General::readhash("$IDS::ids_settings_file", \%oldidssettings); |
bbb6efae | 547 | |
a232b58c | 548 | # Prevent form name from been stored in conf file. |
e0bfd338 | 549 | delete $cgiparams{'IDS'}; |
a232b58c | 550 | |
ebdd0f9a SS |
551 | # Check if the IDS should be enabled. |
552 | if ($cgiparams{'ENABLE_IDS'} eq "on") { | |
553 | # Check if any ruleset is available. Otherwise abort and display an error. | |
554 | unless(%idsrules) { | |
555 | $errormessage = $Lang::tr{'ids no ruleset available'}; | |
556 | } | |
557 | ||
558 | # Loop through the array of available interfaces. | |
559 | foreach my $zone (@network_zones) { | |
560 | # Convert interface name into upper case. | |
561 | my $zone_upper = uc($zone); | |
562 | ||
563 | # Check if the IDS is enabled for this interaces. | |
564 | if ($cgiparams{"ENABLE_IDS_$zone_upper"}) { | |
565 | # Increase count. | |
566 | $monitored_zones++; | |
567 | } | |
568 | } | |
569 | ||
570 | # Check if at least one zone should be monitored, or show an error. | |
571 | unless ($monitored_zones >= 1) { | |
572 | $errormessage = $Lang::tr{'ids no network zone'}; | |
573 | } | |
574 | } | |
575 | ||
a232b58c SS |
576 | # Go on if there are no error messages. |
577 | if (!$errormessage) { | |
578 | # Store settings into settings file. | |
b02e30fd | 579 | &General::writehash("$IDS::ids_settings_file", \%cgiparams); |
a9a91e5f | 580 | } |
8d2f6b0b SS |
581 | |
582 | # Generate file to store the home net. | |
b02e30fd | 583 | &IDS::generate_home_net_file(); |
e2e7880d | 584 | |
74cc8f5a SS |
585 | # Temporary variable to set the ruleaction. |
586 | # Default is "drop" to use suricata as IPS. | |
587 | my $ruleaction="drop"; | |
01d02eb6 SS |
588 | |
589 | # Check if the traffic only should be monitored. | |
74cc8f5a SS |
590 | if($cgiparams{'MONITOR_TRAFFIC_ONLY'} eq 'on') { |
591 | # Switch the ruleaction to "alert". | |
592 | # Suricata acts as an IDS only. | |
593 | $ruleaction="alert"; | |
01d02eb6 | 594 | } |
bbb6efae | 595 | |
74cc8f5a SS |
596 | # Write the modify sid's file and pass the taken ruleaction. |
597 | &IDS::write_modify_sids_file($ruleaction); | |
bbb6efae | 598 | |
01d02eb6 SS |
599 | # Check if "MONITOR_TRAFFIC_ONLY" has been changed. |
600 | if($cgiparams{'MONITOR_TRAFFIC_ONLY'} ne $oldidssettings{'MONITOR_TRAFFIC_ONLY'}) { | |
bbb6efae SS |
601 | # Check if a ruleset exists. |
602 | if (%idsrules) { | |
603 | # Lock the webpage and print message. | |
604 | &working_notice("$Lang::tr{'snort working'}"); | |
605 | ||
606 | # Call oinkmaster to alter the ruleset. | |
607 | &IDS::oinkmaster(); | |
608 | ||
609 | # Set reload_page to "True". | |
610 | $reload_page="True"; | |
611 | } | |
612 | } | |
613 | ||
e2e7880d SS |
614 | # Check if the IDS currently is running. |
615 | if(&IDS::ids_is_running()) { | |
616 | # Check if ENABLE_IDS is set to on. | |
617 | if($cgiparams{'ENABLE_IDS'} eq "on") { | |
618 | # Call suricatactrl to perform a reload of suricata. | |
619 | &IDS::call_suricatactrl("reload"); | |
620 | } else { | |
621 | # Call suricatactrl to stop suricata. | |
622 | &IDS::call_suricatactrl("stop"); | |
623 | } | |
624 | } else { | |
625 | # Call suricatactrl to start suricata. | |
626 | &IDS::call_suricatactrl("start"); | |
627 | } | |
bbb6efae SS |
628 | |
629 | # Check if the page should be reloaded. | |
630 | if ($reload_page) { | |
631 | # Perform a reload of the page. | |
632 | &reload(); | |
633 | } | |
ac1cfefa MT |
634 | } |
635 | ||
ea5c8eeb | 636 | # Read-in idssettings and rulesetsettings |
b02e30fd SS |
637 | &General::readhash("$IDS::ids_settings_file", \%idssettings); |
638 | &General::readhash("$IDS::rules_settings_file", \%rulessettings); | |
1286e0d4 | 639 | |
ea5c8eeb SS |
640 | # If no autoupdate intervall has been configured yet, set default value. |
641 | unless(exists($rulessettings{'AUTOUPDATE_INTERVAL'})) { | |
642 | # Set default to "weekly". | |
643 | $rulessettings{'AUTOUPDATE_INTERVAL'} = 'weekly'; | |
644 | } | |
645 | ||
b7e29743 SS |
646 | # Read-in ignored hosts. |
647 | &General::readhasharray("$IDS::settingsdir/ignored", \%ignored); | |
648 | ||
1286e0d4 SS |
649 | $checked{'ENABLE_IDS'}{'off'} = ''; |
650 | $checked{'ENABLE_IDS'}{'on'} = ''; | |
651 | $checked{'ENABLE_IDS'}{$idssettings{'ENABLE_IDS'}} = "checked='checked'"; | |
01d02eb6 SS |
652 | $checked{'MONITOR_TRAFFIC_ONLY'}{'off'} = ''; |
653 | $checked{'MONITOR_TRAFFIC_ONLY'}{'on'} = ''; | |
654 | $checked{'MONITOR_TRAFFIC_ONLY'}{$idssettings{'MONITOR_TRAFFIC_ONLY'}} = "checked='checked'"; | |
5a3e0dca | 655 | $selected{'RULES'}{'nothing'} = ''; |
5a3e0dca | 656 | $selected{'RULES'}{'community'} = ''; |
a0fa489f | 657 | $selected{'RULES'}{'emerging'} = ''; |
5a3e0dca MT |
658 | $selected{'RULES'}{'registered'} = ''; |
659 | $selected{'RULES'}{'subscripted'} = ''; | |
ea5c8eeb | 660 | $selected{'RULES'}{$rulessettings{'RULES'}} = "selected='selected'"; |
eadad5fd SS |
661 | $selected{'AUTOUPDATE_INTERVAL'}{'off'} = ''; |
662 | $selected{'AUTOUPDATE_INTERVAL'}{'daily'} = ''; | |
663 | $selected{'AUTOUPDATE_INTERVAL'}{'weekly'} = ''; | |
ea5c8eeb | 664 | $selected{'AUTOUPDATE_INTERVAL'}{$rulessettings{'AUTOUPDATE_INTERVAL'}} = "selected='selected'"; |
ac1cfefa MT |
665 | |
666 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
667 | ||
17726644 | 668 | ### Java Script ### |
e0cec9fe SS |
669 | print"<script>\n"; |
670 | ||
671 | # Java script variable declaration for show and hide. | |
672 | print"var show = \"$Lang::tr{'ids show'}\"\;\n"; | |
673 | print"var hide = \"$Lang::tr{'ids hide'}\"\;\n"; | |
674 | ||
17726644 | 675 | print <<END |
029b8ed2 SS |
676 | // JQuery function to show/hide the text input field for |
677 | // Oinkcode/Subscription code. | |
678 | \$(function() { | |
679 | \$('#RULES').change(function(){ | |
680 | if(\$('#RULES').val() == 'registered') { | |
681 | \$('#code').show(); | |
682 | } else if(\$('#RULES').val() == 'subscripted') { | |
683 | \$('#code').show(); | |
684 | } else if(\$('#RULES').val() == 'emerging_pro') { | |
685 | \$('#code').show(); | |
686 | } else { | |
687 | \$('#code').hide(); | |
688 | } | |
689 | }); | |
690 | }); | |
691 | ||
17726644 SS |
692 | // Tiny java script function to show/hide the rules |
693 | // of a given category. | |
694 | function showhide(tblname) { | |
695 | \$("#" + tblname).toggle(); | |
e0cec9fe SS |
696 | |
697 | // Get current content of the span element. | |
698 | var content = document.getElementById("span_" + tblname); | |
699 | ||
700 | if (content.innerHTML === show) { | |
701 | content.innerHTML = hide; | |
702 | } else { | |
703 | content.innerHTML = show; | |
704 | } | |
17726644 SS |
705 | } |
706 | </script> | |
707 | END | |
708 | ; | |
709 | ||
ac1cfefa MT |
710 | &Header::openbigbox('100%', 'left', '', $errormessage); |
711 | ||
712 | if ($errormessage) { | |
713 | &Header::openbox('100%', 'left', $Lang::tr{'error messages'}); | |
714 | print "<class name='base'>$errormessage\n"; | |
715 | print " </class>\n"; | |
716 | &Header::closebox(); | |
717 | } | |
718 | ||
87660964 | 719 | # Draw current state of the IDS |
7cc8a0e5 | 720 | &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'}); |
1504a375 | 721 | |
87660964 SS |
722 | # Check if the IDS is running and obtain the process-id. |
723 | my $pid = &IDS::ids_is_running(); | |
724 | ||
725 | # Display some useful information, if suricata daemon is running. | |
726 | if ($pid) { | |
727 | # Gather used memory. | |
728 | my $memory = &get_memory_usage($pid); | |
729 | ||
730 | print <<END; | |
731 | <table width='95%' cellspacing='0' class='tbl'> | |
732 | <tr> | |
733 | <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</strong></th> | |
734 | </tr> | |
735 | ||
736 | <tr> | |
737 | <td class='base'>$Lang::tr{'guardian daemon'}</td> | |
738 | <td align='center' colspan='2' width='75%' bgcolor='${Header::colourgreen}'><font color='white'><strong>$Lang::tr{'running'}</strong></font></td> | |
739 | </tr> | |
740 | ||
741 | <tr> | |
742 | <td class='base'></td> | |
743 | <td bgcolor='$color{'color20'}' align='center'><strong>PID</strong></td> | |
744 | <td bgcolor='$color{'color20'}' align='center'><strong>$Lang::tr{'memory'}</strong></td> | |
745 | </tr> | |
746 | ||
747 | <tr> | |
748 | <td class='base'></td> | |
749 | <td bgcolor='$color{'color22'}' align='center'>$pid</td> | |
750 | <td bgcolor='$color{'color22'}' align='center'>$memory KB</td> | |
751 | </tr> | |
752 | </table> | |
753 | END | |
754 | } else { | |
755 | # Otherwise display a hint that the service is not launched. | |
756 | print <<END; | |
757 | <table width='95%' cellspacing='0' class='tbl'> | |
758 | <tr> | |
759 | <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</strong></th> | |
760 | </tr> | |
761 | ||
762 | <tr> | |
763 | <td class='base'>$Lang::tr{'guardian daemon'}</td> | |
764 | <td align='center' width='75%' bgcolor='${Header::colourred}'><font color='white'><strong>$Lang::tr{'stopped'}</strong></font></td> | |
765 | </tr> | |
766 | </table> | |
87660964 SS |
767 | END |
768 | } | |
87660964 | 769 | |
01d02eb6 SS |
770 | my $rulesdate; |
771 | ||
772 | # Check if a ruleset allready has been downloaded. | |
773 | if ( -f "$IDS::rulestarball"){ | |
774 | # Call stat on the filename to obtain detailed information. | |
775 | my @Info = stat("$IDS::rulestarball"); | |
776 | ||
777 | # Grab details about the creation time. | |
778 | $rulesdate = localtime($Info[9]); | |
779 | } | |
780 | ||
cf02bf2f SS |
781 | # Only show this area, if a ruleset is present. |
782 | if (%idsrules) { | |
674912fc | 783 | |
cf02bf2f | 784 | print <<END |
674912fc | 785 | |
cf02bf2f | 786 | <br><br><h2>$Lang::tr{'settings'}</h2> |
1286e0d4 | 787 | |
cf02bf2f SS |
788 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> |
789 | <table width='100%' border='0'> | |
790 | <tr> | |
791 | <td class='base' colspan='2'> | |
422dc4ca | 792 | <input type='checkbox' name='ENABLE_IDS' $checked{'ENABLE_IDS'}{'on'}> $Lang::tr{'ids enable'} |
cf02bf2f SS |
793 | </td> |
794 | ||
795 | <td class='base' colspan='2'> | |
422dc4ca | 796 | <input type='checkbox' name='MONITOR_TRAFFIC_ONLY' $checked{'MONITOR_TRAFFIC_ONLY'}{'on'}> $Lang::tr{'ids monitor traffic only'} |
1504a375 | 797 | </td> |
cf02bf2f | 798 | </tr> |
1504a375 | 799 | |
cf02bf2f SS |
800 | <tr> |
801 | <td><br><br></td> | |
802 | <td><br><br></td> | |
803 | <td><br><br></td> | |
804 | <td><br><br></td> | |
805 | </tr> | |
a4ccfcbb | 806 | |
cf02bf2f SS |
807 | <tr> |
808 | <td colspan='4'><b>$Lang::tr{'ids monitored interfaces'}</b><br></td> | |
809 | </tr> | |
a4ccfcbb | 810 | |
cf02bf2f | 811 | <tr> |
ac1cfefa MT |
812 | END |
813 | ; | |
1504a375 | 814 | |
cf02bf2f SS |
815 | # Loop through the array of available networks and print config options. |
816 | foreach my $zone (@network_zones) { | |
817 | my $checked_input; | |
818 | my $checked_forward; | |
1504a375 | 819 | |
cf02bf2f SS |
820 | # Convert current zone name to upper case. |
821 | my $zone_upper = uc($zone); | |
1504a375 | 822 | |
cf02bf2f SS |
823 | # Set zone name. |
824 | my $zone_name = $zone; | |
53817b89 | 825 | |
cf02bf2f SS |
826 | # Dirty hack to get the correct language string for the red zone. |
827 | if ($zone eq "red") { | |
828 | $zone_name = "red1"; | |
829 | } | |
53817b89 | 830 | |
cf02bf2f SS |
831 | # Grab checkbox status from settings hash. |
832 | if ($idssettings{"ENABLE_IDS_$zone_upper"} eq "on") { | |
833 | $checked_input = "checked = 'checked'"; | |
834 | } | |
1504a375 | 835 | |
cf02bf2f SS |
836 | print "<td class='base' width='25%'>\n"; |
837 | print "<input type='checkbox' name='ENABLE_IDS_$zone_upper' $checked_input>\n"; | |
422dc4ca | 838 | print " $Lang::tr{'enabled on'}<font color='$colourhash{$zone}'> $Lang::tr{$zone_name}</font>\n"; |
cf02bf2f SS |
839 | print "</td>\n"; |
840 | } | |
1b73b07e | 841 | |
ac1cfefa | 842 | print <<END |
cf02bf2f SS |
843 | </tr> |
844 | </table> | |
1504a375 | 845 | |
cf02bf2f | 846 | <br><br> |
ea5c8eeb | 847 | |
cf02bf2f SS |
848 | <table width='100%'> |
849 | <tr> | |
850 | <td align='right'><input type='submit' name='IDS' value='$Lang::tr{'save'}' /></td> | |
851 | </tr> | |
852 | </table> | |
853 | </form> | |
ea5c8eeb SS |
854 | END |
855 | ; | |
856 | ||
cf02bf2f SS |
857 | } |
858 | ||
ea5c8eeb SS |
859 | &Header::closebox(); |
860 | ||
861 | # Draw elements for ruleset configuration. | |
862 | &Header::openbox('100%', 'center', $Lang::tr{'ids ruleset settings'}); | |
863 | ||
ea5c8eeb SS |
864 | print <<END |
865 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
866 | <table width='100%' border='0'> | |
1504a375 | 867 | <tr> |
ea5c8eeb SS |
868 | <td><b>$Lang::tr{'ids rules update'}</b></td> |
869 | <td><b>$Lang::tr{'ids automatic rules update'}</b></td> | |
1504a375 SS |
870 | </tr> |
871 | ||
872 | <tr> | |
029b8ed2 | 873 | <td><select name='RULES' id='RULES'> |
a0fa489f | 874 | <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option> |
34a38438 | 875 | <option value='emerging_pro' $selected{'RULES'}{'emerging_pro'} >$Lang::tr{'emerging pro rules'}</option> |
5a3e0dca MT |
876 | <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option> |
877 | <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option> | |
878 | <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option> | |
879 | </select> | |
1504a375 | 880 | </td> |
eadad5fd | 881 | |
ea5c8eeb | 882 | <td> |
eadad5fd | 883 | <select name='AUTOUPDATE_INTERVAL'> |
b7a9b4ed SS |
884 | <option value='off' $selected{'AUTOUPDATE_INTERVAL'}{'off'} >- $Lang::tr{'Disabled'} -</option> |
885 | <option value='daily' $selected{'AUTOUPDATE_INTERVAL'}{'daily'} >$Lang::tr{'Daily'}</option> | |
886 | <option value='weekly' $selected{'AUTOUPDATE_INTERVAL'}{'weekly'} >$Lang::tr{'Weekly'}</option> | |
eadad5fd SS |
887 | </select> |
888 | </td> | |
1504a375 SS |
889 | </tr> |
890 | ||
891 | <tr> | |
bc4a2223 | 892 | <td colspan='2'><br><br></td> |
1504a375 SS |
893 | </tr> |
894 | ||
029b8ed2 SS |
895 | <tr style='display:none' id='code'> |
896 | <td colspan='2'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$rulessettings{'OINKCODE'}'></td> | |
1504a375 SS |
897 | </tr> |
898 | ||
899 | <tr> | |
ea5c8eeb | 900 | <td> </td> |
1504a375 | 901 | |
ea5c8eeb SS |
902 | <td align='right'> |
903 | END | |
904 | ; | |
5f2145eb SS |
905 | # Show the "Update Ruleset"-Button only if a ruleset has been downloaded yet and automatic updates are disabled. |
906 | if ((%idsrules) && ($rulessettings{'AUTOUPDATE_INTERVAL'} eq "off")) { | |
d618d67e | 907 | # Display button to update the ruleset. |
ea5c8eeb | 908 | print"<input type='submit' name='RULESET' value='$Lang::tr{'update ruleset'}'>\n"; |
ea5c8eeb SS |
909 | } |
910 | print <<END; | |
911 | <input type='submit' name='RULESET' value='$Lang::tr{'save'}'> | |
912 | </td> | |
1504a375 | 913 | |
1504a375 SS |
914 | </tr> |
915 | </table> | |
ac1cfefa MT |
916 | </form> |
917 | END | |
918 | ; | |
919 | ||
ac1cfefa | 920 | &Header::closebox(); |
fbfdb241 | 921 | |
b7e29743 SS |
922 | # |
923 | # Whitelist / Ignorelist | |
924 | # | |
925 | &Header::openbox('100%', 'center', $Lang::tr{'guardian ignored hosts'}); | |
926 | ||
927 | print <<END; | |
928 | <table width='100%'> | |
929 | <tr> | |
930 | <td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'ip address'}</b></td> | |
931 | <td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'remark'}</b></td> | |
932 | <td class='base' colspan='3' bgcolor='$color{'color20'}'></td> | |
933 | </tr> | |
934 | END | |
935 | # Check if some hosts have been added to be ignored. | |
936 | if (keys (%ignored)) { | |
937 | my $col = ""; | |
938 | ||
939 | # Loop through all entries of the hash. | |
940 | while( (my $key) = each %ignored) { | |
941 | # Assign data array positions to some nice variable names. | |
942 | my $address = $ignored{$key}[0]; | |
943 | my $remark = $ignored{$key}[1]; | |
944 | my $status = $ignored{$key}[2]; | |
945 | ||
946 | # Check if the key (id) number is even or not. | |
947 | if ($cgiparams{'ID'} eq $key) { | |
948 | $col="bgcolor='${Header::colouryellow}'"; | |
949 | } elsif ($key % 2) { | |
950 | $col="bgcolor='$color{'color22'}'"; | |
951 | } else { | |
952 | $col="bgcolor='$color{'color20'}'"; | |
953 | } | |
954 | ||
955 | # Choose icon for the checkbox. | |
956 | my $gif; | |
957 | my $gdesc; | |
958 | ||
959 | # Check if the status is enabled and select the correct image and description. | |
960 | if ($status eq 'enabled' ) { | |
961 | $gif = 'on.gif'; | |
962 | $gdesc = $Lang::tr{'click to disable'}; | |
963 | } else { | |
964 | $gif = 'off.gif'; | |
965 | $gdesc = $Lang::tr{'click to enable'}; | |
966 | } | |
967 | ||
968 | print <<END; | |
969 | <tr> | |
970 | <td width='20%' class='base' $col>$address</td> | |
971 | <td width='65%' class='base' $col>$remark</td> | |
972 | ||
973 | <td align='center' $col> | |
974 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
975 | <input type='hidden' name='WHITELIST' value='$Lang::tr{'toggle enable disable'}' /> | |
976 | <input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$gif' alt='$gdesc' title='$gdesc' /> | |
977 | <input type='hidden' name='ID' value='$key' /> | |
978 | </form> | |
979 | </td> | |
980 | ||
981 | <td align='center' $col> | |
982 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
983 | <input type='hidden' name='WHITELIST' value='$Lang::tr{'edit'}' /> | |
984 | <input type='image' name='$Lang::tr{'edit'}' src='/images/edit.gif' alt='$Lang::tr{'edit'}' title='$Lang::tr{'edit'}' /> | |
985 | <input type='hidden' name='ID' value='$key' /> | |
986 | </form> | |
987 | </td> | |
988 | ||
989 | <td align='center' $col> | |
990 | <form method='post' name='$key' action='$ENV{'SCRIPT_NAME'}'> | |
991 | <input type='image' name='$Lang::tr{'remove'}' src='/images/delete.gif' title='$Lang::tr{'remove'}' alt='$Lang::tr{'remove'}'> | |
992 | <input type='hidden' name='ID' value='$key'> | |
993 | <input type='hidden' name='WHITELIST' value='$Lang::tr{'remove'}'> | |
994 | </form> | |
995 | </td> | |
996 | </tr> | |
997 | END | |
998 | } | |
999 | } else { | |
1000 | # Print notice that currently no hosts are ignored. | |
1001 | print "<tr>\n"; | |
1002 | print "<td class='base' colspan='2'>$Lang::tr{'guardian no entries'}</td>\n"; | |
1003 | print "</tr>\n"; | |
1004 | } | |
1005 | ||
1006 | print "</table>\n"; | |
1007 | ||
1008 | # Section to add new elements or edit existing ones. | |
1009 | print <<END; | |
1010 | <br> | |
1011 | <hr> | |
1012 | <br> | |
1013 | ||
1014 | <div align='center'> | |
1015 | <table width='100%'> | |
1016 | END | |
1017 | ||
1018 | # Assign correct headline and button text. | |
1019 | my $buttontext; | |
1020 | my $entry_address; | |
1021 | my $entry_remark; | |
1022 | ||
1023 | # Check if an ID (key) has been given, in this case an existing entry should be edited. | |
1024 | if ($cgiparams{'ID'} ne '') { | |
1025 | $buttontext = $Lang::tr{'update'}; | |
1026 | print "<tr><td class='boldbase' colspan='3'><b>$Lang::tr{'update'}</b></td></tr>\n"; | |
1027 | ||
1028 | # Grab address and remark for the given key. | |
1029 | $entry_address = $ignored{$cgiparams{'ID'}}[0]; | |
1030 | $entry_remark = $ignored{$cgiparams{'ID'}}[1]; | |
1031 | } else { | |
1032 | $buttontext = $Lang::tr{'add'}; | |
1033 | print "<tr><td class='boldbase' colspan='3'><b>$Lang::tr{'dnsforward add a new entry'}</b></td></tr>\n"; | |
1034 | } | |
1035 | ||
1036 | print <<END; | |
1037 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
1038 | <input type='hidden' name='ID' value='$cgiparams{'ID'}'> | |
1039 | <tr> | |
1040 | <td width='30%'>$Lang::tr{'ip address'}: </td> | |
1041 | <td width='50%'><input type='text' name='IGNORE_ENTRY_ADDRESS' value='$entry_address' size='24' /></td> | |
1042 | ||
1043 | <td width='30%'>$Lang::tr{'remark'}: </td> | |
1044 | <td wicth='50%'><input type='text' name=IGNORE_ENTRY_REMARK value='$entry_remark' size='24' /></td> | |
1045 | <td align='center' width='20%'><input type='submit' name='WHITELIST' value='$buttontext' /></td> | |
1046 | </tr> | |
1047 | </form> | |
1048 | </table> | |
1049 | </div> | |
1050 | END | |
1051 | ||
1052 | &Header::closebox(); | |
1053 | ||
80bcd4dd SS |
1054 | # Only show the section for configuring the ruleset if one is present. |
1055 | if (%idsrules) { | |
1056 | &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'}); | |
298723b9 | 1057 | |
80bcd4dd | 1058 | print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n"; |
ce0e83b3 | 1059 | |
80bcd4dd SS |
1060 | # Output display table for rule files |
1061 | print "<table width='100%'>\n"; | |
f7fcd1c0 | 1062 | |
80bcd4dd SS |
1063 | # Loop over each rule file |
1064 | foreach my $rulefile (sort keys(%idsrules)) { | |
1065 | my $rulechecked = ''; | |
3ffee04b | 1066 | |
80bcd4dd SS |
1067 | # Check if rule file is enabled |
1068 | if ($idsrules{$rulefile}{'Rulefile'}{'State'} eq 'on') { | |
1069 | $rulechecked = 'CHECKED'; | |
1070 | } | |
1071 | ||
0a1bba1a SS |
1072 | # Convert rulefile name into category name. |
1073 | my $categoryname = &_rulefile_to_category($rulefile); | |
1074 | ||
80bcd4dd SS |
1075 | # Table and rows for the rule files. |
1076 | print"<tr>\n"; | |
1077 | print"<td class='base' width='5%'>\n"; | |
1078 | print"<input type='checkbox' name='$rulefile' $rulechecked>\n"; | |
1079 | print"</td>\n"; | |
1080 | print"<td class='base' width='90%'><b>$rulefile</b></td>\n"; | |
1081 | print"<td class='base' width='5%' align='right'>\n"; | |
e0cec9fe | 1082 | print"<a href=\"javascript:showhide('$categoryname')\"><span id='span_$categoryname'>$Lang::tr{'ids show'}</span></a>\n"; |
80bcd4dd SS |
1083 | print"</td>\n"; |
1084 | print"</tr>\n"; | |
1085 | ||
1086 | # Rows which will be hidden per default and will contain the single rules. | |
0a1bba1a | 1087 | print"<tr style='display:none' id='$categoryname'>\n"; |
80bcd4dd | 1088 | print"<td colspan='3'>\n"; |
17726644 | 1089 | |
f7fcd1c0 | 1090 | # Local vars |
80bcd4dd SS |
1091 | my $lines; |
1092 | my $rows; | |
1093 | my $col; | |
f9c2147d | 1094 | |
80bcd4dd SS |
1095 | # New table for the single rules. |
1096 | print "<table width='100%'>\n"; | |
e5738079 | 1097 | |
80bcd4dd SS |
1098 | # Loop over rule file rules |
1099 | foreach my $sid (sort {$a <=> $b} keys(%{$idsrules{$rulefile}})) { | |
1100 | # Local vars | |
1101 | my $ruledefchecked = ''; | |
3ffee04b | 1102 | |
80bcd4dd SS |
1103 | # Skip rulefile itself. |
1104 | next if ($sid eq "Rulefile"); | |
f7fcd1c0 | 1105 | |
80bcd4dd SS |
1106 | # If 2 rules have been displayed, start a new row |
1107 | if (($lines % 2) == 0) { | |
1108 | print "</tr><tr>\n"; | |
1109 | ||
1110 | # Increase rows by once. | |
1111 | $rows++; | |
1112 | } | |
1113 | ||
1114 | # Colour lines. | |
1115 | if ($rows % 2) { | |
1116 | $col="bgcolor='$color{'color20'}'"; | |
1117 | } else { | |
1118 | $col="bgcolor='$color{'color22'}'"; | |
1119 | } | |
f7fcd1c0 | 1120 | |
80bcd4dd SS |
1121 | # Set rule state |
1122 | if ($idsrules{$rulefile}{$sid}{'State'} eq 'on') { | |
1123 | $ruledefchecked = 'CHECKED'; | |
1124 | } | |
1125 | ||
1126 | # Create rule checkbox and display rule description | |
1127 | print "<td class='base' width='5%' align='right' $col>\n"; | |
1128 | print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n"; | |
1129 | print "</td>\n"; | |
1130 | print "<td class='base' width='45%' $col>$idsrules{$rulefile}{$sid}{'Description'}</td>"; | |
1131 | ||
1132 | # Increment rule count | |
1133 | $lines++; | |
f7fcd1c0 | 1134 | } |
3ffee04b | 1135 | |
80bcd4dd SS |
1136 | # If do not have a second rule for row, create empty cell |
1137 | if (($lines % 2) != 0) { | |
1138 | print "<td class='base'></td>"; | |
1139 | } | |
17726644 | 1140 | |
80bcd4dd SS |
1141 | # Close display table |
1142 | print "</tr></table></td></tr>"; | |
f7fcd1c0 SS |
1143 | } |
1144 | ||
1145 | # Close display table | |
80bcd4dd | 1146 | print "</table>"; |
17726644 | 1147 | |
f7fcd1c0 | 1148 | print <<END |
2999f1d2 CS |
1149 | <table width='100%'> |
1150 | <tr> | |
298723b9 | 1151 | <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'> |
3ffee04b CS |
1152 | <!-- space for future online help link --> |
1153 | </td> | |
2999f1d2 CS |
1154 | </tr> |
1155 | </table> | |
298723b9 | 1156 | </form> |
3ffee04b CS |
1157 | END |
1158 | ; | |
80bcd4dd SS |
1159 | &Header::closebox(); |
1160 | } | |
1161 | ||
ac1cfefa MT |
1162 | &Header::closebigbox(); |
1163 | &Header::closepage(); | |
1164 | ||
27760092 SS |
1165 | # |
1166 | ## A function to display a notice, to lock the webpage and | |
1167 | ## tell the user which action currently will be performed. | |
1168 | # | |
1169 | sub working_notice ($) { | |
1170 | my ($message) = @_; | |
1171 | ||
1172 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
1173 | &Header::openbigbox('100%', 'left', '', $errormessage); | |
1174 | &Header::openbox( 'Waiting', 1,); | |
1175 | print <<END; | |
1176 | <table> | |
1177 | <tr> | |
1178 | <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td> | |
1179 | <td>$message</td> | |
1180 | </tr> | |
1181 | </table> | |
1182 | END | |
1183 | &Header::closebox(); | |
1184 | &Header::closebigbox(); | |
1185 | &Header::closepage(); | |
1186 | } | |
1187 | ||
3983aebd SS |
1188 | # |
1189 | ## A tiny function to perform a reload of the webpage after one second. | |
1190 | # | |
1191 | sub reload () { | |
1192 | print "<meta http-equiv='refresh' content='1'>\n"; | |
1193 | ||
1194 | # Stop the script. | |
1195 | exit; | |
a70d269a SS |
1196 | } |
1197 | ||
25f5cb0d SS |
1198 | # |
1199 | ## Private function to read-in and parse rules of a given rulefile. | |
1200 | # | |
1201 | ## The given file will be read, parsed and all valid rules will be stored by ID, | |
9d18656b | 1202 | ## message/description and it's state in the idsrules hash. |
25f5cb0d | 1203 | # |
3da6e01b SS |
1204 | sub readrulesfile ($) { |
1205 | my $rulefile = shift; | |
1206 | ||
1207 | # Open rule file and read in contents | |
298ef5ba | 1208 | open(RULEFILE, "$IDS::rulespath/$rulefile") or die "Unable to read $rulefile!"; |
3da6e01b SS |
1209 | |
1210 | # Store file content in an array. | |
1211 | my @lines = <RULEFILE>; | |
1212 | ||
1213 | # Close file. | |
1214 | close(RULEFILE); | |
1215 | ||
1216 | # Loop over rule file contents | |
1217 | foreach my $line (@lines) { | |
1218 | # Remove whitespaces. | |
1219 | chomp $line; | |
1220 | ||
1221 | # Skip blank lines. | |
1222 | next if ($line =~ /^\s*$/); | |
1223 | ||
1224 | # Local vars. | |
1225 | my $sid; | |
1226 | my $msg; | |
1227 | ||
1228 | # Gather rule sid and message from the ruleline. | |
1229 | if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) { | |
1230 | $msg = $1; | |
1231 | $sid = $2; | |
1232 | ||
1233 | # Check if a rule has been found. | |
1234 | if ($sid && $msg) { | |
9d18656b SS |
1235 | # Add rule to the idsrules hash. |
1236 | $idsrules{$rulefile}{$sid}{'Description'} = $msg; | |
3da6e01b SS |
1237 | |
1238 | # Grab status of the rule. Check if ruleline starts with a "dash". | |
1239 | if ($line =~ /^\#/) { | |
1240 | # If yes, the rule is disabled. | |
9d18656b | 1241 | $idsrules{$rulefile}{$sid}{'State'} = "off"; |
3da6e01b SS |
1242 | } else { |
1243 | # Otherwise the rule is enabled. | |
9d18656b | 1244 | $idsrules{$rulefile}{$sid}{'State'} = "on"; |
3da6e01b SS |
1245 | } |
1246 | } | |
1247 | } | |
b7e29743 | 1248 | } |
3da6e01b | 1249 | } |
87660964 | 1250 | |
8d2f6b0b SS |
1251 | # |
1252 | ## Function to get the used memory of a given process-id. | |
1253 | # | |
87660964 | 1254 | sub get_memory_usage($) { |
004b13b7 | 1255 | my ($pid) = @_; |
87660964 | 1256 | |
004b13b7 | 1257 | my $memory = 0; |
87660964 | 1258 | |
004b13b7 | 1259 | # Try to open the status file for the given process-id on the pseudo |
87660964 | 1260 | # file system proc. |
004b13b7 SS |
1261 | if (open(FILE, "/proc/$pid/status")) { |
1262 | # Loop through the entire file. | |
1263 | while (<FILE>) { | |
1264 | # Splitt current line content and store them into variables. | |
1265 | my ($key, $value) = split(":", $_, 2); | |
1266 | ||
1267 | # Check if the current key is the one which contains the memory usage. | |
1268 | # The wanted one is VmRSS which contains the Real-memory (resident set) | |
1269 | # of the entire process. | |
1270 | if ($key eq "VmRSS") { | |
1271 | # Found the memory usage add it to the memory variable. | |
1272 | $memory += $value; | |
1273 | ||
1274 | # Break the loop. | |
1275 | last; | |
1276 | } | |
1277 | } | |
87660964 SS |
1278 | |
1279 | # Close file handle. | |
004b13b7 | 1280 | close(FILE); |
87660964 SS |
1281 | |
1282 | # Return memory usage. | |
1283 | return $memory; | |
004b13b7 | 1284 | } |
87660964 SS |
1285 | |
1286 | # If the file could not be open, return nothing. | |
1287 | return; | |
1288 | } | |
1289 | ||
a5d61752 SS |
1290 | # |
1291 | ## Function to read-in the given enabled or disables sids file. | |
1292 | # | |
1293 | sub read_enabled_disabled_sids_file($) { | |
1294 | my ($file) = @_; | |
1295 | ||
1296 | # Temporary hash to store the sids and their state. It will be | |
1297 | # returned at the end of this function. | |
1298 | my %temphash; | |
1299 | ||
1300 | # Open the given filename. | |
1301 | open(FILE, "$file") or die "Could not open $file. $!\n"; | |
1302 | ||
1303 | # Loop through the file. | |
1304 | while(<FILE>) { | |
1305 | # Remove newlines. | |
1306 | chomp $_; | |
1307 | ||
1308 | # Skip blank lines. | |
1309 | next if ($_ =~ /^\s*$/); | |
1310 | ||
1311 | # Skip coments. | |
1312 | next if ($_ =~ /^\#/); | |
1313 | ||
1314 | # Splitt line into sid and state part. | |
1315 | my ($state, $sid) = split(" ", $_); | |
1316 | ||
1317 | # Skip line if the sid is not numeric. | |
1318 | next unless ($sid =~ /\d+/ ); | |
1319 | ||
1320 | # Check if the sid was enabled. | |
1321 | if ($state eq "enablesid") { | |
1322 | # Add the sid and its state as enabled to the temporary hash. | |
1323 | $temphash{$sid} = "enabled"; | |
1324 | # Check if the sid was disabled. | |
1325 | } elsif ($state eq "disablesid") { | |
1326 | # Add the sid and its state as disabled to the temporary hash. | |
1327 | $temphash{$sid} = "disabled"; | |
1328 | # Invalid state - skip the current sid and state. | |
1329 | } else { | |
1330 | next; | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | # Close filehandle. | |
1335 | close(FILE); | |
1336 | ||
1337 | # Return the hash. | |
1338 | return %temphash; | |
1339 | } | |
0a1bba1a SS |
1340 | |
1341 | # | |
1342 | ## Private function to convert a given rulefile to a category name. | |
1343 | ## ( No file extension anymore and if the name contained a dot, it | |
1344 | ## would be replaced by a underline sign.) | |
1345 | # | |
1346 | sub _rulefile_to_category($) { | |
1347 | my ($filename) = @_; | |
1348 | ||
1349 | # Splitt the filename into single chunks and store them in a | |
1350 | # temorary array. | |
1351 | my @parts = split(/\./, $filename); | |
1352 | ||
1353 | # Return / Remove last element of the temporary array. | |
1354 | # This removes the file extension. | |
1355 | pop @parts; | |
1356 | ||
1357 | # Join together the single elements of the temporary array. | |
1358 | # If these are more than one, use a "underline" for joining. | |
1359 | my $category = join '_', @parts; | |
1360 | ||
1361 | # Return the converted filename. | |
1362 | return $category; | |
1363 | } |