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