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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 "${General::swroot}/ids-functions.pl"; |
ac1cfefa | 32 | |
f2fdd0c1 CS |
33 | my %color = (); |
34 | my %mainsettings = (); | |
9d18656b | 35 | my %idsrules = (); |
1286e0d4 | 36 | my %idssettings=(); |
43263ea6 | 37 | my %rulesetsources = (); |
298723b9 | 38 | my %cgiparams=(); |
ac1cfefa | 39 | my %checked=(); |
5a3e0dca | 40 | my %selected=(); |
0b89daee SS |
41 | |
42 | # Read-in main settings, for language, theme and colors. | |
43 | &General::readhash("${General::swroot}/main/settings", \%mainsettings); | |
44 | &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color); | |
45 | ||
1286e0d4 SS |
46 | # Get the available network zones, based on the config type of the system and store |
47 | # the list of zones in an array. | |
48 | my @network_zones = &IDS::get_available_network_zones(); | |
ac1cfefa | 49 | |
8d2f6b0b | 50 | # File where the used rulefiles are stored. |
101c8881 | 51 | my $idsusedrulefilesfile = "$IDS::settingsdir/suricata-used-rulefiles.yaml"; |
8d2f6b0b SS |
52 | |
53 | # File where the addresses of the homenet are stored. | |
54 | my $idshomenetfile = "$IDS::settingsdir/suricata-homenet.yaml"; | |
55 | ||
01ba4be4 SS |
56 | # File which contains the enabled sids. |
57 | my $enabled_sids_file = "$IDS::settingsdir/oinkmaster-enabled-sids.conf"; | |
58 | ||
59 | # File which contains the disabled sids. | |
60 | my $disabled_sids_file = "$IDS::settingsdir/oinkmaster-disabled-sids.conf"; | |
61 | ||
62 | # File which contains wheater the rules should be changed. | |
63 | my $modify_sids_file = "$IDS::settingsdir/oinkmaster-modify-sids.conf"; | |
64 | ||
43263ea6 SS |
65 | my $errormessage; |
66 | ||
00512a5a | 67 | # Create files if they does not exist yet. |
01ba4be4 SS |
68 | unless (-f "$enabled_sids_file") { &IDS::create_empty_file($enabled_sids_file); } |
69 | unless (-f "$disabled_sids_file") { &IDS::create_empty_file($disabled_sids_file); } | |
70 | unless (-f "$modify_sids_file") { &IDS::create_empty_file($modify_sids_file); } | |
00512a5a | 71 | unless (-f "$idsusedrulefilesfile") { &IDS::create_empty_file($idsusedrulefilesfile); } |
01ba4be4 | 72 | |
ac1cfefa MT |
73 | &Header::showhttpheaders(); |
74 | ||
298723b9 SS |
75 | #Get GUI values |
76 | &Header::getcgihash(\%cgiparams); | |
ac1cfefa | 77 | |
3983aebd SS |
78 | # Check if any error has been stored. |
79 | if (-e $IDS::storederrorfile) { | |
80 | # Open file to read in the stored error message. | |
81 | open(FILE, "<$IDS::storederrorfile") or die "Could not open $IDS::storederrorfile. $!\n"; | |
82 | ||
83 | # Read the stored error message. | |
84 | $errormessage = <FILE>; | |
85 | ||
86 | # Close file. | |
87 | close (FILE); | |
88 | ||
89 | # Delete the file, which is now not longer required. | |
90 | unlink($IDS::storederrorfile); | |
91 | } | |
92 | ||
93 | ||
9d18656b | 94 | ## Grab all available snort rules and store them in the idsrules hash. |
3da6e01b | 95 | # |
422204ff | 96 | # Open snort rules directory and do a directory listing. |
298ef5ba | 97 | opendir(DIR, $IDS::rulespath) or die $!; |
422204ff SS |
98 | # Loop through the direcory. |
99 | while (my $file = readdir(DIR)) { | |
100 | ||
101 | # We only want files. | |
298ef5ba | 102 | next unless (-f "$IDS::rulespath/$file"); |
422204ff SS |
103 | |
104 | # Ignore empty files. | |
298ef5ba | 105 | next if (-z "$IDS::rulespath/$file"); |
422204ff | 106 | |
3da6e01b | 107 | # Use a regular expression to find files ending in .rules |
422204ff SS |
108 | next unless ($file =~ m/\.rules$/); |
109 | ||
3da6e01b | 110 | # Ignore files which are not read-able. |
298ef5ba | 111 | next unless (-R "$IDS::rulespath/$file"); |
395e3b90 | 112 | |
3da6e01b | 113 | # Call subfunction to read-in rulefile and add rules to |
9d18656b | 114 | # the idsrules hash. |
3da6e01b | 115 | &readrulesfile("$file"); |
395e3b90 | 116 | } |
395e3b90 | 117 | |
3da6e01b | 118 | closedir(DIR); |
395e3b90 | 119 | |
e5738079 SS |
120 | # Gather used rulefiles. |
121 | # | |
122 | # Check if the file for activated rulefiles is not empty. | |
02844177 | 123 | if(-f $idsusedrulefilesfile) { |
e5738079 | 124 | # Open the file for used rulefile and read-in content. |
02844177 | 125 | open(FILE, $idsusedrulefilesfile) or die "Could not open $idsusedrulefilesfile. $!\n"; |
e5738079 SS |
126 | |
127 | # Read-in content. | |
128 | my @lines = <FILE>; | |
129 | ||
130 | # Close file. | |
131 | close(FILE); | |
132 | ||
133 | # Loop through the array. | |
134 | foreach my $line (@lines) { | |
135 | # Remove newlines. | |
136 | chomp($line); | |
137 | ||
138 | # Skip comments. | |
139 | next if ($line =~ /\#/); | |
140 | ||
141 | # Skip blank lines. | |
142 | next if ($line =~ /^\s*$/); | |
143 | ||
144 | # Gather rule sid and message from the ruleline. | |
101c8881 | 145 | if ($line =~ /.*- (.*)/) { |
e5738079 SS |
146 | my $rulefile = $1; |
147 | ||
9d18656b SS |
148 | # Add the rulefile to the %idsrules hash. |
149 | $idsrules{$rulefile}{'Rulefile'}{'State'} = "on"; | |
e5738079 SS |
150 | } |
151 | } | |
152 | } | |
153 | ||
298723b9 SS |
154 | # Save ruleset. |
155 | if ($cgiparams{'RULESET'} eq $Lang::tr{'update'}) { | |
d2212836 | 156 | # Arrays to store which rulefiles have been enabled and will be used. |
e5738079 | 157 | my @enabled_rulefiles; |
298723b9 | 158 | |
d2212836 SS |
159 | # Hash to store the user-enabled and disabled sids. |
160 | my %enabled_disabled_sids; | |
161 | ||
9d18656b SS |
162 | # Loop through the hash of idsrules. |
163 | foreach my $rulefile(keys %idsrules) { | |
e5738079 SS |
164 | # Check if the rulefile is enabled. |
165 | if ($cgiparams{$rulefile} eq "on") { | |
166 | # Add rulefile to the array of enabled rulefiles. | |
167 | push(@enabled_rulefiles, $rulefile); | |
b65b5ef3 SS |
168 | |
169 | # Drop item from cgiparams hash. | |
170 | delete $cgiparams{$rulefile}; | |
e5738079 | 171 | } |
466c6779 | 172 | } |
e5738079 | 173 | |
d2212836 SS |
174 | # Read-in the files for enabled/disabled sids. |
175 | # This will be done by calling the read_enabled_disabled_sids_file function two times | |
176 | # and merge the returned hashes together into the enabled_disabled_sids hash. | |
177 | %enabled_disabled_sids = ( | |
178 | &read_enabled_disabled_sids_file($disabled_sids_file), | |
179 | &read_enabled_disabled_sids_file($enabled_sids_file)); | |
180 | ||
9d18656b SS |
181 | # Loop through the hash of idsrules. |
182 | foreach my $rulefile (keys %idsrules) { | |
298723b9 | 183 | # Loop through the single rules of the rulefile. |
9d18656b | 184 | foreach my $sid (keys %{$idsrules{$rulefile}}) { |
c51a044a SS |
185 | # Skip the current sid if it is not numeric. |
186 | next unless ($sid =~ /\d+/ ); | |
187 | ||
298723b9 SS |
188 | # Check if there exists a key in the cgiparams hash for this sid. |
189 | if (exists($cgiparams{$sid})) { | |
190 | # Look if the rule is disabled. | |
9d18656b | 191 | if ($idsrules{$rulefile}{$sid}{'State'} eq "off") { |
298723b9 SS |
192 | # Check if the state has been set to 'on'. |
193 | if ($cgiparams{$sid} eq "on") { | |
d2212836 SS |
194 | # Add/Modify the sid to/in the enabled_disabled_sids hash. |
195 | $enabled_disabled_sids{$sid} = "enabled"; | |
298723b9 SS |
196 | |
197 | # Drop item from cgiparams hash. | |
60333473 | 198 | delete $cgiparams{$rulefile}{$sid}; |
298723b9 SS |
199 | } |
200 | } | |
201 | } else { | |
202 | # Look if the rule is enabled. | |
9d18656b | 203 | if ($idsrules{$rulefile}{$sid}{'State'} eq "on") { |
298723b9 SS |
204 | # Check if the state is 'on' and should be disabled. |
205 | # In this case there is no entry | |
206 | # for the sid in the cgiparams hash. | |
d2212836 SS |
207 | # Add/Modify it to/in the enabled_disabled_sids hash. |
208 | $enabled_disabled_sids{$sid} = "disabled"; | |
298723b9 SS |
209 | |
210 | # Drop item from cgiparams hash. | |
60333473 | 211 | delete $cgiparams{$rulefile}{$sid}; |
298723b9 SS |
212 | } |
213 | } | |
214 | } | |
215 | } | |
216 | ||
37659505 | 217 | # Open enabled sid's file for writing. |
d2212836 | 218 | open(ENABLED_FILE, ">$enabled_sids_file") or die "Could not write to $enabled_sids_file. $!\n"; |
37659505 SS |
219 | |
220 | # Open disabled sid's file for writing. | |
d2212836 SS |
221 | open(DISABLED_FILE, ">$disabled_sids_file") or die "Could not write to $disabled_sids_file. $!\n"; |
222 | ||
223 | # Write header to the files. | |
224 | print ENABLED_FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
225 | print DISABLED_FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
226 | ||
227 | # Check if the hash for enabled/disabled files contains any entries. | |
228 | if (%enabled_disabled_sids) { | |
229 | # Loop through the hash. | |
230 | foreach my $sid (keys %enabled_disabled_sids) { | |
231 | # Check if the sid is enabled. | |
232 | if ($enabled_disabled_sids{$sid} eq "enabled") { | |
233 | # Print the sid to the enabled_sids file. | |
234 | print ENABLED_FILE "enablesid $sid\n"; | |
235 | # Check if the sid is disabled. | |
236 | } elsif ($enabled_disabled_sids{$sid} eq "disabled") { | |
237 | # Print the sid to the disabled_sids file. | |
238 | print DISABLED_FILE "disablesid $sid\n"; | |
239 | # Something strange happende - skip the current sid. | |
240 | } else { | |
241 | next; | |
242 | } | |
37659505 SS |
243 | } |
244 | } | |
298723b9 | 245 | |
d2212836 SS |
246 | # Close file for enabled_sids after writing. |
247 | close(ENABLED_FILE); | |
248 | ||
249 | # Close file for disabled_sids after writing. | |
250 | close(DISABLED_FILE); | |
e5738079 SS |
251 | |
252 | # Open file for used rulefiles. | |
02844177 | 253 | open (FILE, ">$idsusedrulefilesfile") or die "Could not write to $idsusedrulefilesfile. $!\n"; |
e5738079 | 254 | |
101c8881 SS |
255 | # Write yaml header to the file. |
256 | print FILE "%YAML 1.1\n"; | |
257 | print FILE "---\n\n"; | |
258 | ||
e5738079 SS |
259 | # Write header to file. |
260 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
261 | ||
262 | # Check if the enabled_rulefiles array contains any entries. | |
263 | if (@enabled_rulefiles) { | |
264 | # Loop through the array of rulefiles which should be loaded and write the to the file. | |
265 | foreach my $file (@enabled_rulefiles) { | |
101c8881 | 266 | print FILE " - $file\n"; |
e5738079 SS |
267 | } |
268 | } | |
269 | ||
270 | # Close file after writing. | |
271 | close(FILE); | |
52599865 | 272 | |
27760092 SS |
273 | # Lock the webpage and print message. |
274 | &working_notice("$Lang::tr{'snort working'}"); | |
275 | ||
52599865 | 276 | # Call oinkmaster to alter the ruleset. |
27760092 SS |
277 | &IDS::oinkmaster(); |
278 | ||
e2e7880d | 279 | # Check if the IDS is running. |
5a28e721 | 280 | if(&IDS::ids_is_running()) { |
e2e7880d SS |
281 | # Call suricatactrl to perform a reload. |
282 | &IDS::call_suricatactrl("reload"); | |
283 | } | |
284 | ||
27760092 SS |
285 | # Reload page. |
286 | &reload(); | |
52599865 SS |
287 | |
288 | # Download new ruleset. | |
289 | } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'download new ruleset'}) { | |
43263ea6 SS |
290 | # Check if the red device is active. |
291 | unless (-e "${General::swroot}/red/active") { | |
292 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
293 | } | |
52599865 | 294 | |
3983aebd | 295 | # Check if enought free disk space is availabe. |
434001d0 SS |
296 | if(&IDS::checkdiskspace()) { |
297 | $errormessage = "$Lang::tr{'not enough disk space'}"; | |
298 | } | |
52599865 | 299 | |
43263ea6 SS |
300 | # Check if any errors happend. |
301 | unless ($errormessage) { | |
27760092 SS |
302 | # Lock the webpage and print notice about downloading |
303 | # a new ruleset. | |
304 | &working_notice("$Lang::tr{'snort working'}"); | |
3983aebd | 305 | |
43263ea6 | 306 | # Call subfunction to download the ruleset. |
434001d0 SS |
307 | if(&IDS::downloadruleset()) { |
308 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
8f22237b | 309 | |
3983aebd | 310 | # Call function to store the errormessage. |
434001d0 | 311 | &IDS::_store_error_message($errormessage); |
52599865 | 312 | |
3983aebd SS |
313 | # Preform a reload of the page. |
314 | &reload(); | |
315 | } else { | |
316 | # Call subfunction to launch oinkmaster. | |
317 | &IDS::oinkmaster(); | |
43263ea6 | 318 | |
e2e7880d | 319 | # Check if the IDS is running. |
5a28e721 | 320 | if(&IDS::ids_is_running()) { |
e2e7880d SS |
321 | # Call suricatactrl to perform a reload. |
322 | &IDS::call_suricatactrl("reload"); | |
323 | } | |
324 | ||
3983aebd SS |
325 | # Perform a reload of the page. |
326 | &reload(); | |
327 | } | |
52599865 | 328 | } |
a232b58c | 329 | # Save snort settings. |
e0bfd338 | 330 | } elsif ($cgiparams{'IDS'} eq $Lang::tr{'save'}) { |
bbb6efae SS |
331 | my %oldidssettings; |
332 | my $reload_page; | |
333 | ||
334 | # Read-in current (old) IDS settings. | |
335 | &General::readhash("$IDS::settingsdir/settings", \%oldidssettings); | |
336 | ||
a232b58c | 337 | # Prevent form name from been stored in conf file. |
e0bfd338 | 338 | delete $cgiparams{'IDS'}; |
a232b58c SS |
339 | |
340 | # Check if an oinkcode has been provided. | |
341 | if ($cgiparams{'OINKCODE'}) { | |
342 | # Check if the oinkcode contains unallowed chars. | |
343 | unless ($cgiparams{'OINKCODE'} =~ /^[a-z0-9]+$/) { | |
344 | $errormessage = $Lang::tr{'invalid input for oink code'}; | |
345 | } | |
f9c2147d | 346 | } |
ac1cfefa | 347 | |
a232b58c SS |
348 | # Go on if there are no error messages. |
349 | if (!$errormessage) { | |
350 | # Store settings into settings file. | |
02844177 | 351 | &General::writehash("$IDS::settingsdir/settings", \%cgiparams); |
a9a91e5f | 352 | } |
8d2f6b0b SS |
353 | |
354 | # Generate file to store the home net. | |
355 | &generate_home_net_file(); | |
e2e7880d | 356 | |
bbb6efae SS |
357 | # Open modify sid's file for writing. |
358 | open(FILE, ">$modify_sids_file") or die "Could not write to $modify_sids_file. $!\n"; | |
359 | ||
360 | # Write file header. | |
361 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
362 | ||
363 | # Check if the configured runmode is IPS. | |
364 | if ($cgiparams{'RUN_MODE'} eq 'IPS') { | |
365 | # Tell oinkmaster to switch all rules from alert to drop. | |
366 | print FILE "modifysid \* \"alert\" \| \"drop\"\n"; | |
367 | } | |
368 | ||
369 | # Close file handle. | |
370 | close(FILE); | |
371 | ||
372 | # Check if the runmode has been changed. | |
373 | if($cgiparams{'RUN_MODE'} ne $oldidssettings{'RUN_MODE'}) { | |
374 | # Check if a ruleset exists. | |
375 | if (%idsrules) { | |
376 | # Lock the webpage and print message. | |
377 | &working_notice("$Lang::tr{'snort working'}"); | |
378 | ||
379 | # Call oinkmaster to alter the ruleset. | |
380 | &IDS::oinkmaster(); | |
381 | ||
382 | # Set reload_page to "True". | |
383 | $reload_page="True"; | |
384 | } | |
385 | } | |
386 | ||
e2e7880d SS |
387 | # Check if the IDS currently is running. |
388 | if(&IDS::ids_is_running()) { | |
389 | # Check if ENABLE_IDS is set to on. | |
390 | if($cgiparams{'ENABLE_IDS'} eq "on") { | |
391 | # Call suricatactrl to perform a reload of suricata. | |
392 | &IDS::call_suricatactrl("reload"); | |
393 | } else { | |
394 | # Call suricatactrl to stop suricata. | |
395 | &IDS::call_suricatactrl("stop"); | |
396 | } | |
397 | } else { | |
398 | # Call suricatactrl to start suricata. | |
399 | &IDS::call_suricatactrl("start"); | |
400 | } | |
bbb6efae SS |
401 | |
402 | # Check if the page should be reloaded. | |
403 | if ($reload_page) { | |
404 | # Perform a reload of the page. | |
405 | &reload(); | |
406 | } | |
ac1cfefa MT |
407 | } |
408 | ||
1286e0d4 SS |
409 | # Read-in idssettings |
410 | &General::readhash("$IDS::settingsdir/settings", \%idssettings); | |
411 | ||
a4ccfcbb SS |
412 | # If the runmode has not been configured yet, set default value. |
413 | unless(exists($idssettings{'RUN_MODE'})) { | |
414 | # Set default to IPS. | |
415 | $idssettings{'RUN_MODE'} = 'IPS'; | |
416 | } | |
417 | ||
1286e0d4 SS |
418 | $checked{'ENABLE_IDS'}{'off'} = ''; |
419 | $checked{'ENABLE_IDS'}{'on'} = ''; | |
420 | $checked{'ENABLE_IDS'}{$idssettings{'ENABLE_IDS'}} = "checked='checked'"; | |
a4ccfcbb SS |
421 | $checked{'RUN_MODE'}{'IDS'} = ''; |
422 | $checked{'RUN_MODE'}{'IPS'} = ''; | |
423 | $checked{'RUN_MODE'}{$idssettings{'RUN_MODE'}} = "checked='checked'"; | |
5a3e0dca | 424 | $selected{'RULES'}{'nothing'} = ''; |
5a3e0dca | 425 | $selected{'RULES'}{'community'} = ''; |
a0fa489f | 426 | $selected{'RULES'}{'emerging'} = ''; |
5a3e0dca MT |
427 | $selected{'RULES'}{'registered'} = ''; |
428 | $selected{'RULES'}{'subscripted'} = ''; | |
1286e0d4 | 429 | $selected{'RULES'}{$idssettings{'RULES'}} = "selected='selected'"; |
ac1cfefa MT |
430 | |
431 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
432 | ||
17726644 SS |
433 | ### Java Script ### |
434 | print <<END | |
435 | <script> | |
436 | // Tiny java script function to show/hide the rules | |
437 | // of a given category. | |
438 | function showhide(tblname) { | |
439 | \$("#" + tblname).toggle(); | |
440 | } | |
441 | </script> | |
442 | END | |
443 | ; | |
444 | ||
ac1cfefa MT |
445 | &Header::openbigbox('100%', 'left', '', $errormessage); |
446 | ||
447 | if ($errormessage) { | |
448 | &Header::openbox('100%', 'left', $Lang::tr{'error messages'}); | |
449 | print "<class name='base'>$errormessage\n"; | |
450 | print " </class>\n"; | |
451 | &Header::closebox(); | |
452 | } | |
453 | ||
87660964 | 454 | # Draw current state of the IDS |
7cc8a0e5 | 455 | &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'}); |
1504a375 | 456 | |
87660964 SS |
457 | # Check if the IDS is running and obtain the process-id. |
458 | my $pid = &IDS::ids_is_running(); | |
459 | ||
460 | # Display some useful information, if suricata daemon is running. | |
461 | if ($pid) { | |
462 | # Gather used memory. | |
463 | my $memory = &get_memory_usage($pid); | |
464 | ||
465 | print <<END; | |
466 | <table width='95%' cellspacing='0' class='tbl'> | |
467 | <tr> | |
468 | <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</strong></th> | |
469 | </tr> | |
470 | ||
471 | <tr> | |
472 | <td class='base'>$Lang::tr{'guardian daemon'}</td> | |
473 | <td align='center' colspan='2' width='75%' bgcolor='${Header::colourgreen}'><font color='white'><strong>$Lang::tr{'running'}</strong></font></td> | |
474 | </tr> | |
475 | ||
476 | <tr> | |
477 | <td class='base'></td> | |
478 | <td bgcolor='$color{'color20'}' align='center'><strong>PID</strong></td> | |
479 | <td bgcolor='$color{'color20'}' align='center'><strong>$Lang::tr{'memory'}</strong></td> | |
480 | </tr> | |
481 | ||
482 | <tr> | |
483 | <td class='base'></td> | |
484 | <td bgcolor='$color{'color22'}' align='center'>$pid</td> | |
485 | <td bgcolor='$color{'color22'}' align='center'>$memory KB</td> | |
486 | </tr> | |
487 | </table> | |
488 | END | |
489 | } else { | |
490 | # Otherwise display a hint that the service is not launched. | |
491 | print <<END; | |
492 | <table width='95%' cellspacing='0' class='tbl'> | |
493 | <tr> | |
494 | <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</strong></th> | |
495 | </tr> | |
496 | ||
497 | <tr> | |
498 | <td class='base'>$Lang::tr{'guardian daemon'}</td> | |
499 | <td align='center' width='75%' bgcolor='${Header::colourred}'><font color='white'><strong>$Lang::tr{'stopped'}</strong></font></td> | |
500 | </tr> | |
501 | </table> | |
87660964 SS |
502 | END |
503 | } | |
504 | &Header::closebox(); | |
505 | ||
506 | # Draw elements for IDS configuration. | |
507 | &Header::openbox('100%', 'center', $Lang::tr{'settings'}); | |
508 | ||
1504a375 SS |
509 | my $rulesdate; |
510 | ||
511 | # Check if a ruleset allready has been downloaded. | |
a69b96d2 | 512 | if ( -f "$IDS::rulestarball"){ |
1504a375 | 513 | # Call stat on the filename to obtain detailed information. |
a69b96d2 | 514 | my @Info = stat("$IDS::rulestarball"); |
1504a375 SS |
515 | |
516 | # Grab details about the creation time. | |
517 | $rulesdate = localtime($Info[9]); | |
518 | } | |
519 | ||
ac1cfefa | 520 | print <<END |
1504a375 SS |
521 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> |
522 | <table width='100%' border='0'> | |
523 | <tr> | |
a4ccfcbb | 524 | <td class='base' colspan='4'> |
1286e0d4 SS |
525 | <input type='checkbox' name='ENABLE_IDS' $checked{'ENABLE_IDS'}{'on'}>$Lang::tr{'ids activate'} $Lang::tr{'intrusion detection system'} |
526 | </td> | |
a4ccfcbb | 527 | </tr> |
1286e0d4 | 528 | |
a4ccfcbb SS |
529 | <tr> |
530 | <td colspan='4'><br><br></td> | |
1286e0d4 SS |
531 | </tr> |
532 | ||
533 | <tr> | |
a4ccfcbb | 534 | <td class='base' colspan='4'><b>$Lang::tr{'runmode'}</b></td> |
1286e0d4 | 535 | </tr> |
1504a375 | 536 | |
1286e0d4 | 537 | <tr> |
a4ccfcbb SS |
538 | <td class='base' colspan='4'> |
539 | <input type='radio' name='RUN_MODE' value='IDS' $checked{'RUN_MODE'}{'IDS'}>$Lang::tr{'intrusion detection system2'}     | |
540 | <input type='radio' name='RUN_MODE' value='IPS' $checked{'RUN_MODE'}{'IPS'}>$Lang::tr{'intrusion prevention system'} | |
1504a375 | 541 | </td> |
a4ccfcbb | 542 | </tr> |
1504a375 | 543 | |
a4ccfcbb SS |
544 | <tr> |
545 | <td colspan='4'><br></td> | |
1286e0d4 | 546 | </tr> |
a4ccfcbb SS |
547 | |
548 | <tr> | |
549 | <td colspan='4'><b>$Lang::tr{'ids traffic analyze'}</b><br></td> | |
550 | </tr> | |
551 | ||
552 | <tr> | |
ac1cfefa MT |
553 | END |
554 | ; | |
1504a375 | 555 | |
1286e0d4 SS |
556 | # Loop through the array of available networks and print config options. |
557 | foreach my $zone (@network_zones) { | |
558 | my $checked_input; | |
559 | my $checked_forward; | |
1504a375 | 560 | |
1286e0d4 SS |
561 | # Convert current zone name to upper case. |
562 | my $zone_upper = uc($zone); | |
1504a375 | 563 | |
1286e0d4 | 564 | # Grab checkbox status from settings hash. |
a4ccfcbb | 565 | if ($idssettings{"ENABLE_IDS_$zone_upper"} eq "on") { |
1286e0d4 SS |
566 | $checked_input = "checked = 'checked'"; |
567 | } | |
1504a375 | 568 | |
1286e0d4 | 569 | print "<td class='base' width='25%'>\n"; |
a4ccfcbb | 570 | print "<input type='checkbox' name='ENABLE_IDS_$zone_upper' $checked_input>$Lang::tr{'enabled on'} $Lang::tr{$zone}\n"; |
1286e0d4 | 571 | print "</td>\n"; |
ac1cfefa | 572 | } |
1b73b07e | 573 | |
ac1cfefa | 574 | print <<END |
1504a375 SS |
575 | </tr> |
576 | ||
577 | <tr> | |
578 | <td colspan='4'><br><br></td> | |
579 | </tr> | |
580 | ||
581 | <tr> | |
582 | <td colspan='4'><b>$Lang::tr{'ids rules update'}</b></td> | |
583 | </tr> | |
584 | ||
585 | <tr> | |
586 | <td colspan='4'><select name='RULES'> | |
5a3e0dca | 587 | <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option> |
a0fa489f | 588 | <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option> |
5a3e0dca MT |
589 | <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option> |
590 | <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option> | |
591 | <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option> | |
592 | </select> | |
1504a375 SS |
593 | </td> |
594 | </tr> | |
595 | ||
596 | <tr> | |
597 | <td colspan='4'> | |
598 | <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> | |
599 | <br>$Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}</br> | |
600 | </td> | |
601 | </tr> | |
602 | ||
603 | <tr> | |
1286e0d4 | 604 | <td colspan='4' nowrap='nowrap'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$idssettings{'OINKCODE'}'></td> |
1504a375 SS |
605 | </tr> |
606 | ||
607 | <tr> | |
608 | <td colspan='4' align='left'><br> | |
609 | <input type='submit' name='RULESET' value='$Lang::tr{'download new ruleset'}'> $Lang::tr{'updates installed'}: $rulesdate | |
610 | </td> | |
611 | ||
612 | </tr> | |
613 | </table> | |
614 | ||
615 | <br><br> | |
616 | ||
617 | <table width='100%'> | |
618 | <tr> | |
e0bfd338 | 619 | <td align='right'><input type='submit' name='IDS' value='$Lang::tr{'save'}' /></td> |
1504a375 SS |
620 | </tr> |
621 | </table> | |
ac1cfefa MT |
622 | </form> |
623 | END | |
624 | ; | |
625 | ||
ac1cfefa | 626 | &Header::closebox(); |
fbfdb241 | 627 | |
f7fcd1c0 | 628 | &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'}); |
298723b9 SS |
629 | print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n"; |
630 | ||
f7fcd1c0 | 631 | # Output display table for rule files |
17726644 | 632 | print "<table width='100%'>\n"; |
ce0e83b3 | 633 | |
17726644 SS |
634 | # Local variable required for java script to show/hide |
635 | # rules of a rulefile. | |
636 | my $rulesetcount = 1; | |
f7fcd1c0 SS |
637 | |
638 | # Loop over each rule file | |
9d18656b | 639 | foreach my $rulefile (sort keys(%idsrules)) { |
f7fcd1c0 SS |
640 | my $rulechecked = ''; |
641 | ||
f7fcd1c0 | 642 | # Check if rule file is enabled |
9d18656b | 643 | if ($idsrules{$rulefile}{'Rulefile'}{'State'} eq 'on') { |
f7fcd1c0 SS |
644 | $rulechecked = 'CHECKED'; |
645 | } | |
3ffee04b | 646 | |
17726644 SS |
647 | # Table and rows for the rule files. |
648 | print"<tr>\n"; | |
649 | print"<td class='base' width='5%'>\n"; | |
e5738079 | 650 | print"<input type='checkbox' name='$rulefile' $rulechecked>\n"; |
17726644 SS |
651 | print"</td>\n"; |
652 | print"<td class='base' width='90%'><b>$rulefile</b></td>\n"; | |
653 | print"<td class='base' width='5%' align='right'>\n"; | |
654 | print"<a href=\"javascript:showhide('ruleset$rulesetcount')\">SHOW</a>\n"; | |
655 | print"</td>\n"; | |
656 | print"</tr>\n"; | |
657 | ||
658 | # Rows which will be hidden per default and will contain the single rules. | |
659 | print"<tr style='display:none' id='ruleset$rulesetcount'>\n"; | |
660 | print"<td colspan='3'>\n"; | |
661 | ||
662 | # Local vars | |
663 | my $lines; | |
664 | my $rows; | |
665 | my $col; | |
666 | ||
667 | # New table for the single rules. | |
668 | print "<table width='100%'>\n"; | |
669 | ||
670 | # Loop over rule file rules | |
9d18656b | 671 | foreach my $sid (sort {$a <=> $b} keys(%{$idsrules{$rulefile}})) { |
f7fcd1c0 | 672 | # Local vars |
17726644 | 673 | my $ruledefchecked = ''; |
f9c2147d | 674 | |
e5738079 SS |
675 | # Skip rulefile itself. |
676 | next if ($sid eq "Rulefile"); | |
677 | ||
17726644 SS |
678 | # If 2 rules have been displayed, start a new row |
679 | if (($lines % 2) == 0) { | |
680 | print "</tr><tr>\n"; | |
3ffee04b | 681 | |
17726644 SS |
682 | # Increase rows by once. |
683 | $rows++; | |
684 | } | |
f7fcd1c0 | 685 | |
17726644 SS |
686 | # Colour lines. |
687 | if ($rows % 2) { | |
688 | $col="bgcolor='$color{'color20'}'"; | |
689 | } else { | |
690 | $col="bgcolor='$color{'color22'}'"; | |
f7fcd1c0 SS |
691 | } |
692 | ||
17726644 | 693 | # Set rule state |
9d18656b | 694 | if ($idsrules{$rulefile}{$sid}{'State'} eq 'on') { |
17726644 | 695 | $ruledefchecked = 'CHECKED'; |
f7fcd1c0 | 696 | } |
3ffee04b | 697 | |
17726644 SS |
698 | # Create rule checkbox and display rule description |
699 | print "<td class='base' width='5%' align='right' $col>\n"; | |
700 | print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n"; | |
701 | print "</td>\n"; | |
9d18656b | 702 | print "<td class='base' width='45%' $col>$idsrules{$rulefile}{$sid}{'Description'}</td>"; |
17726644 SS |
703 | |
704 | # Increment rule count | |
705 | $lines++; | |
706 | } | |
707 | ||
708 | # If do not have a second rule for row, create empty cell | |
709 | if (($lines % 2) != 0) { | |
710 | print "<td class='base'></td>"; | |
f7fcd1c0 SS |
711 | } |
712 | ||
713 | # Close display table | |
17726644 | 714 | print "</tr></table></td></tr>"; |
3ffee04b | 715 | |
17726644 SS |
716 | # Finished whith the rule file, increase count. |
717 | $rulesetcount++; | |
f7fcd1c0 | 718 | } |
17726644 SS |
719 | |
720 | # Close display table | |
721 | print "</table>"; | |
722 | ||
f7fcd1c0 | 723 | print <<END |
2999f1d2 CS |
724 | <table width='100%'> |
725 | <tr> | |
298723b9 | 726 | <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'> |
3ffee04b CS |
727 | <!-- space for future online help link --> |
728 | </td> | |
2999f1d2 CS |
729 | </tr> |
730 | </table> | |
298723b9 | 731 | </form> |
3ffee04b CS |
732 | END |
733 | ; | |
f7fcd1c0 | 734 | &Header::closebox(); |
ac1cfefa MT |
735 | &Header::closebigbox(); |
736 | &Header::closepage(); | |
737 | ||
27760092 SS |
738 | # |
739 | ## A function to display a notice, to lock the webpage and | |
740 | ## tell the user which action currently will be performed. | |
741 | # | |
742 | sub working_notice ($) { | |
743 | my ($message) = @_; | |
744 | ||
745 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
746 | &Header::openbigbox('100%', 'left', '', $errormessage); | |
747 | &Header::openbox( 'Waiting', 1,); | |
748 | print <<END; | |
749 | <table> | |
750 | <tr> | |
751 | <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td> | |
752 | <td>$message</td> | |
753 | </tr> | |
754 | </table> | |
755 | END | |
756 | &Header::closebox(); | |
757 | &Header::closebigbox(); | |
758 | &Header::closepage(); | |
759 | } | |
760 | ||
3983aebd SS |
761 | # |
762 | ## A tiny function to perform a reload of the webpage after one second. | |
763 | # | |
764 | sub reload () { | |
765 | print "<meta http-equiv='refresh' content='1'>\n"; | |
766 | ||
767 | # Stop the script. | |
768 | exit; | |
a70d269a SS |
769 | } |
770 | ||
25f5cb0d SS |
771 | # |
772 | ## Private function to read-in and parse rules of a given rulefile. | |
773 | # | |
774 | ## The given file will be read, parsed and all valid rules will be stored by ID, | |
9d18656b | 775 | ## message/description and it's state in the idsrules hash. |
25f5cb0d | 776 | # |
3da6e01b SS |
777 | sub readrulesfile ($) { |
778 | my $rulefile = shift; | |
779 | ||
780 | # Open rule file and read in contents | |
298ef5ba | 781 | open(RULEFILE, "$IDS::rulespath/$rulefile") or die "Unable to read $rulefile!"; |
3da6e01b SS |
782 | |
783 | # Store file content in an array. | |
784 | my @lines = <RULEFILE>; | |
785 | ||
786 | # Close file. | |
787 | close(RULEFILE); | |
788 | ||
789 | # Loop over rule file contents | |
790 | foreach my $line (@lines) { | |
791 | # Remove whitespaces. | |
792 | chomp $line; | |
793 | ||
794 | # Skip blank lines. | |
795 | next if ($line =~ /^\s*$/); | |
796 | ||
797 | # Local vars. | |
798 | my $sid; | |
799 | my $msg; | |
800 | ||
801 | # Gather rule sid and message from the ruleline. | |
802 | if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) { | |
803 | $msg = $1; | |
804 | $sid = $2; | |
805 | ||
806 | # Check if a rule has been found. | |
807 | if ($sid && $msg) { | |
9d18656b SS |
808 | # Add rule to the idsrules hash. |
809 | $idsrules{$rulefile}{$sid}{'Description'} = $msg; | |
3da6e01b SS |
810 | |
811 | # Grab status of the rule. Check if ruleline starts with a "dash". | |
812 | if ($line =~ /^\#/) { | |
813 | # If yes, the rule is disabled. | |
9d18656b | 814 | $idsrules{$rulefile}{$sid}{'State'} = "off"; |
3da6e01b SS |
815 | } else { |
816 | # Otherwise the rule is enabled. | |
9d18656b | 817 | $idsrules{$rulefile}{$sid}{'State'} = "on"; |
3da6e01b SS |
818 | } |
819 | } | |
820 | } | |
821 | } | |
822 | } | |
87660964 | 823 | |
8d2f6b0b SS |
824 | # |
825 | ## Function to get the used memory of a given process-id. | |
826 | # | |
87660964 | 827 | sub get_memory_usage($) { |
004b13b7 | 828 | my ($pid) = @_; |
87660964 | 829 | |
004b13b7 | 830 | my $memory = 0; |
87660964 | 831 | |
004b13b7 | 832 | # Try to open the status file for the given process-id on the pseudo |
87660964 | 833 | # file system proc. |
004b13b7 SS |
834 | if (open(FILE, "/proc/$pid/status")) { |
835 | # Loop through the entire file. | |
836 | while (<FILE>) { | |
837 | # Splitt current line content and store them into variables. | |
838 | my ($key, $value) = split(":", $_, 2); | |
839 | ||
840 | # Check if the current key is the one which contains the memory usage. | |
841 | # The wanted one is VmRSS which contains the Real-memory (resident set) | |
842 | # of the entire process. | |
843 | if ($key eq "VmRSS") { | |
844 | # Found the memory usage add it to the memory variable. | |
845 | $memory += $value; | |
846 | ||
847 | # Break the loop. | |
848 | last; | |
849 | } | |
850 | } | |
87660964 SS |
851 | |
852 | # Close file handle. | |
004b13b7 | 853 | close(FILE); |
87660964 SS |
854 | |
855 | # Return memory usage. | |
856 | return $memory; | |
004b13b7 | 857 | } |
87660964 SS |
858 | |
859 | # If the file could not be open, return nothing. | |
860 | return; | |
861 | } | |
862 | ||
8d2f6b0b SS |
863 | # |
864 | ## Function to generate the file which contains the home net information. | |
865 | # | |
866 | sub generate_home_net_file() { | |
867 | my %netsettings; | |
868 | ||
869 | # Read-in network settings. | |
870 | &General::readhash("${General::swroot}/ethernet/settings", \%netsettings); | |
871 | ||
872 | # Get available network zones. | |
873 | my @network_zones = &IDS::get_available_network_zones(); | |
874 | ||
875 | # Temporary array to store network address and prefix of the configured | |
876 | # networks. | |
877 | my @networks; | |
878 | ||
879 | # Loop through the array of available network zones. | |
880 | foreach my $zone (@network_zones) { | |
881 | # Skip the red network - It never can be part to the home_net! | |
882 | next if($zone eq "red"); | |
883 | ||
884 | # Convert current zone name into upper case. | |
885 | $zone = uc($zone); | |
886 | ||
887 | # Generate key to access the required data from the netsettings hash. | |
888 | my $zone_netaddress = $zone . "_NETADDRESS"; | |
889 | my $zone_netmask = $zone . "_NETMASK"; | |
890 | ||
891 | # Obtain the settings from the netsettings hash. | |
892 | my $netaddress = $netsettings{$zone_netaddress}; | |
893 | my $netmask = $netsettings{$zone_netmask}; | |
894 | ||
895 | # Convert the subnetmask into prefix notation. | |
896 | my $prefix = &Network::convert_netmask2prefix($netmask); | |
897 | ||
898 | # Generate full network string. | |
899 | my $network = join("/", $netaddress,$prefix); | |
900 | ||
901 | # Check if the network is valid. | |
902 | if(&Network::check_subnet($network)) { | |
903 | # Add the generated network to the array of networks. | |
904 | push(@networks, $network); | |
905 | } | |
906 | } | |
907 | ||
908 | # Format home net declaration. | |
909 | my $line = "\"\["; | |
910 | ||
911 | # Loop through the array of networks. | |
912 | foreach my $network (@networks) { | |
913 | # Add the network to the line. | |
914 | $line = "$line" . "$network"; | |
915 | ||
916 | # Check if the current network was the last in the array. | |
917 | if ($network eq $networks[-1]) { | |
918 | # Close the line. | |
919 | $line = "$line" . "\]\""; | |
920 | } else { | |
921 | # Add "," for the next network. | |
922 | $line = "$line" . "\,"; | |
923 | } | |
924 | } | |
925 | ||
926 | # Open file to store the addresses of the home net. | |
927 | open(FILE, ">$idshomenetfile") or die "Could not open $idshomenetfile. $!\n"; | |
928 | ||
929 | # Print yaml header. | |
930 | print FILE "%YAML 1.1\n"; | |
931 | print FILE "---\n\n"; | |
932 | ||
933 | # Print notice about autogenerated file. | |
934 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
935 | ||
936 | # Print the generated and required HOME_NET declaration to the file. | |
937 | print FILE "HOME_NET:\t$line\n"; | |
938 | ||
939 | # Close file handle. | |
940 | close(FILE); | |
941 | ||
942 | } | |
a5d61752 SS |
943 | |
944 | # | |
945 | ## Function to read-in the given enabled or disables sids file. | |
946 | # | |
947 | sub read_enabled_disabled_sids_file($) { | |
948 | my ($file) = @_; | |
949 | ||
950 | # Temporary hash to store the sids and their state. It will be | |
951 | # returned at the end of this function. | |
952 | my %temphash; | |
953 | ||
954 | # Open the given filename. | |
955 | open(FILE, "$file") or die "Could not open $file. $!\n"; | |
956 | ||
957 | # Loop through the file. | |
958 | while(<FILE>) { | |
959 | # Remove newlines. | |
960 | chomp $_; | |
961 | ||
962 | # Skip blank lines. | |
963 | next if ($_ =~ /^\s*$/); | |
964 | ||
965 | # Skip coments. | |
966 | next if ($_ =~ /^\#/); | |
967 | ||
968 | # Splitt line into sid and state part. | |
969 | my ($state, $sid) = split(" ", $_); | |
970 | ||
971 | # Skip line if the sid is not numeric. | |
972 | next unless ($sid =~ /\d+/ ); | |
973 | ||
974 | # Check if the sid was enabled. | |
975 | if ($state eq "enablesid") { | |
976 | # Add the sid and its state as enabled to the temporary hash. | |
977 | $temphash{$sid} = "enabled"; | |
978 | # Check if the sid was disabled. | |
979 | } elsif ($state eq "disablesid") { | |
980 | # Add the sid and its state as disabled to the temporary hash. | |
981 | $temphash{$sid} = "disabled"; | |
982 | # Invalid state - skip the current sid and state. | |
983 | } else { | |
984 | next; | |
985 | } | |
986 | } | |
987 | ||
988 | # Close filehandle. | |
989 | close(FILE); | |
990 | ||
991 | # Return the hash. | |
992 | return %temphash; | |
993 | } |