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