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ac1cfefa | 1 | #!/usr/bin/perl |
70df8302 MT |
2 | ############################################################################### |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
b6f571fa | 5 | # Copyright (C) 2007-2015 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"; | |
31 | ||
f2fdd0c1 CS |
32 | my %color = (); |
33 | my %mainsettings = (); | |
0b89daee | 34 | my %netsettings = (); |
a232b58c | 35 | my %snortrules = (); |
ac1cfefa | 36 | my %snortsettings=(); |
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 | ||
46 | # Get netsettings. | |
ac1cfefa MT |
47 | &General::readhash("${General::swroot}/ethernet/settings", \%netsettings); |
48 | ||
43263ea6 SS |
49 | # Get all available ruleset locations. |
50 | &General::readhash("${General::swroot}/snort/ruleset-sources.list", \%rulesetsources); | |
51 | ||
52 | my $rulestarball = "/var/tmp/snortrules.tar.gz"; | |
53 | my $snortrulepath = "/etc/snort/rules"; | |
54 | my $snortusedrulefilesfile = "${General::swroot}/snort/snort-used-rulefiles.conf"; | |
55 | my $errormessage; | |
56 | ||
57 | # Hook used to download and update the ruleset, | |
58 | # if the cgi got called from command line. | |
59 | if ($ENV{"REMOTE_ADDR"} eq "") { | |
60 | # Read snortsettings. | |
61 | &General::readhash("${General::swroot}/snort/settings", \%snortsettings); | |
62 | ||
63 | # Download rules tarball. | |
64 | $errormessage = &downloadruleset(); | |
65 | ||
66 | # Sleep for one second. | |
67 | sleep(1); | |
68 | ||
69 | # Check if there was an error message. | |
70 | unless ($errormessage) { | |
71 | # Call oinkmaster. | |
72 | &oinkmaster(); | |
73 | } else { | |
74 | # Call logger and log the errormessage. | |
75 | system("logger -t oinkmaster $errormessage"); | |
76 | } | |
77 | ||
78 | exit(0); | |
79 | } | |
80 | ||
ac1cfefa MT |
81 | &Header::showhttpheaders(); |
82 | ||
0b89daee | 83 | # Default settings for snort. |
ac1cfefa MT |
84 | $snortsettings{'ENABLE_SNORT'} = 'off'; |
85 | $snortsettings{'ENABLE_SNORT_GREEN'} = 'off'; | |
86 | $snortsettings{'ENABLE_SNORT_BLUE'} = 'off'; | |
87 | $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off'; | |
5a3e0dca | 88 | $snortsettings{'RULES'} = ''; |
ac1cfefa | 89 | $snortsettings{'OINKCODE'} = ''; |
ac1cfefa | 90 | |
298723b9 SS |
91 | #Get GUI values |
92 | &Header::getcgihash(\%cgiparams); | |
ac1cfefa | 93 | |
500c5c55 SS |
94 | # Try to determine if oinkmaster is running. |
95 | my $oinkmaster_pid = `pidof oinkmaster.pl -x`; | |
96 | ||
97 | # If oinkmaster is running display output. | |
98 | if ($oinkmaster_pid) { | |
99 | &working("$Lang::tr{'snort working'}"); | |
100 | } | |
101 | ||
3da6e01b SS |
102 | ## Grab all available snort rules and store them in the snortrules hash. |
103 | # | |
422204ff SS |
104 | # Open snort rules directory and do a directory listing. |
105 | opendir(DIR, $snortrulepath) or die $!; | |
106 | # Loop through the direcory. | |
107 | while (my $file = readdir(DIR)) { | |
108 | ||
109 | # We only want files. | |
110 | next unless (-f "$snortrulepath/$file"); | |
111 | ||
112 | # Ignore empty files. | |
113 | next if (-z "$snortrulepath/$file"); | |
114 | ||
3da6e01b | 115 | # Use a regular expression to find files ending in .rules |
422204ff SS |
116 | next unless ($file =~ m/\.rules$/); |
117 | ||
3da6e01b SS |
118 | # Ignore files which are not read-able. |
119 | next unless (-R "$snortrulepath/$file"); | |
395e3b90 | 120 | |
3da6e01b SS |
121 | # Call subfunction to read-in rulefile and add rules to |
122 | # the snortrules hash. | |
123 | &readrulesfile("$file"); | |
395e3b90 | 124 | } |
395e3b90 | 125 | |
3da6e01b | 126 | closedir(DIR); |
395e3b90 | 127 | |
e5738079 SS |
128 | # Gather used rulefiles. |
129 | # | |
130 | # Check if the file for activated rulefiles is not empty. | |
131 | if(-f $snortusedrulefilesfile) { | |
132 | # Open the file for used rulefile and read-in content. | |
133 | open(FILE, $snortusedrulefilesfile) or die "Could not open $snortusedrulefilesfile. $!\n"; | |
134 | ||
135 | # Read-in content. | |
136 | my @lines = <FILE>; | |
137 | ||
138 | # Close file. | |
139 | close(FILE); | |
140 | ||
141 | # Loop through the array. | |
142 | foreach my $line (@lines) { | |
143 | # Remove newlines. | |
144 | chomp($line); | |
145 | ||
146 | # Skip comments. | |
147 | next if ($line =~ /\#/); | |
148 | ||
149 | # Skip blank lines. | |
150 | next if ($line =~ /^\s*$/); | |
151 | ||
152 | # Gather rule sid and message from the ruleline. | |
153 | if ($line =~ /.*include \$RULE_PATH\/(.*)/) { | |
154 | my $rulefile = $1; | |
155 | ||
156 | # Add the rulefile to the %snortrules hash. | |
157 | $snortrules{$rulefile}{'Rulefile'}{'State'} = "on"; | |
158 | } | |
159 | } | |
160 | } | |
161 | ||
298723b9 SS |
162 | # Save ruleset. |
163 | if ($cgiparams{'RULESET'} eq $Lang::tr{'update'}) { | |
164 | my $enabled_sids_file = "${General::swroot}/snort/oinkmaster-enabled-sids.conf"; | |
165 | my $disabled_sids_file = "${General::swroot}/snort/oinkmaster-disabled-sids.conf"; | |
166 | ||
167 | # Arrays to store sid which should be added to the corresponding files. | |
168 | my @enabled_sids; | |
169 | my @disabled_sids; | |
e5738079 | 170 | my @enabled_rulefiles; |
298723b9 SS |
171 | |
172 | # Loop through the hash of snortrules. | |
173 | foreach my $rulefile(keys %snortrules) { | |
e5738079 SS |
174 | # Check if the rulefile is enabled. |
175 | if ($cgiparams{$rulefile} eq "on") { | |
176 | # Add rulefile to the array of enabled rulefiles. | |
177 | push(@enabled_rulefiles, $rulefile); | |
b65b5ef3 SS |
178 | |
179 | # Drop item from cgiparams hash. | |
180 | delete $cgiparams{$rulefile}; | |
e5738079 | 181 | } |
466c6779 | 182 | } |
e5738079 | 183 | |
466c6779 SS |
184 | # Loop through the hash of snortrules. |
185 | foreach my $rulefile (keys %snortrules) { | |
298723b9 SS |
186 | # Loop through the single rules of the rulefile. |
187 | foreach my $sid (keys %{$snortrules{$rulefile}}) { | |
c51a044a SS |
188 | # Skip the current sid if it is not numeric. |
189 | next unless ($sid =~ /\d+/ ); | |
190 | ||
298723b9 SS |
191 | # Check if there exists a key in the cgiparams hash for this sid. |
192 | if (exists($cgiparams{$sid})) { | |
193 | # Look if the rule is disabled. | |
194 | if ($snortrules{$rulefile}{$sid}{'State'} eq "off") { | |
195 | # Check if the state has been set to 'on'. | |
196 | if ($cgiparams{$sid} eq "on") { | |
197 | # Add the sid to the enabled_sids array. | |
198 | push(@enabled_sids, $sid); | |
199 | ||
200 | # Drop item from cgiparams hash. | |
60333473 | 201 | delete $cgiparams{$rulefile}{$sid}; |
298723b9 SS |
202 | } |
203 | } | |
204 | } else { | |
205 | # Look if the rule is enabled. | |
206 | if ($snortrules{$rulefile}{$sid}{'State'} eq "on") { | |
207 | # Check if the state is 'on' and should be disabled. | |
208 | # In this case there is no entry | |
209 | # for the sid in the cgiparams hash. | |
210 | # Add it to the disabled_sids array. | |
211 | push(@disabled_sids, $sid); | |
212 | ||
213 | # Drop item from cgiparams hash. | |
60333473 | 214 | delete $cgiparams{$rulefile}{$sid}; |
298723b9 SS |
215 | } |
216 | } | |
217 | } | |
218 | } | |
219 | ||
37659505 SS |
220 | # Open enabled sid's file for writing. |
221 | open(FILE, ">$enabled_sids_file") or die "Could not write to $enabled_sids_file. $!\n"; | |
298723b9 | 222 | |
37659505 SS |
223 | # Write header to file. |
224 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
298723b9 | 225 | |
37659505 SS |
226 | # Check if the enabled_sids array contains any sid's. |
227 | if (@enabled_sids) { | |
298723b9 SS |
228 | # Loop through the array of enabled sids and write them to the file. |
229 | foreach my $sid (@enabled_sids) { | |
37659505 | 230 | print FILE "enablesid $sid\n"; |
298723b9 | 231 | } |
298723b9 SS |
232 | } |
233 | ||
37659505 SS |
234 | # Close file after writing. |
235 | close(FILE); | |
236 | ||
237 | # Open disabled sid's file for writing. | |
238 | open(FILE, ">$disabled_sids_file") or die "Could not write to $disabled_sids_file. $!\n"; | |
298723b9 | 239 | |
37659505 SS |
240 | # Write header to file. |
241 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
298723b9 | 242 | |
37659505 SS |
243 | # Check if the enabled_sids array contains any sid's. |
244 | if (@disabled_sids) { | |
245 | # Loop through the array of disabled sids and write them to the file. | |
246 | foreach my $sid (@disabled_sids) { | |
247 | print FILE "disablesid $sid\n"; | |
248 | } | |
249 | } | |
298723b9 | 250 | |
37659505 SS |
251 | # Close file after writing. |
252 | close(FILE); | |
e5738079 SS |
253 | |
254 | # Open file for used rulefiles. | |
37659505 | 255 | open (FILE, ">$snortusedrulefilesfile") or die "Could not write to $snortusedrulefilesfile. $!\n"; |
e5738079 SS |
256 | |
257 | # Write header to file. | |
258 | print FILE "#Autogenerated file. Any custom changes will be overwritten!\n"; | |
259 | ||
260 | # Check if the enabled_rulefiles array contains any entries. | |
261 | if (@enabled_rulefiles) { | |
262 | # Loop through the array of rulefiles which should be loaded and write the to the file. | |
263 | foreach my $file (@enabled_rulefiles) { | |
264 | print FILE "include \$RULE_PATH/$file\n"; | |
265 | } | |
266 | } | |
267 | ||
268 | # Close file after writing. | |
269 | close(FILE); | |
52599865 SS |
270 | |
271 | # Call oinkmaster to alter the ruleset. | |
272 | &oinkmaster(); | |
273 | ||
274 | # Download new ruleset. | |
275 | } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'download new ruleset'}) { | |
43263ea6 SS |
276 | # Check if the red device is active. |
277 | unless (-e "${General::swroot}/red/active") { | |
278 | $errormessage = $Lang::tr{'could not download latest updates'}; | |
279 | } | |
52599865 SS |
280 | |
281 | # Call diskfree to gather the free disk space of /var. | |
282 | my @df = `/bin/df -B M /var`; | |
283 | ||
284 | # Loop through the output. | |
285 | foreach my $line (@df) { | |
286 | # Ignore header line. | |
287 | next if $line =~ m/^Filesystem/; | |
288 | ||
289 | # Search for a line with the device information. | |
290 | if ($line =~ m/dev/ ) { | |
291 | # Split the line into single pieces. | |
292 | my @values = split(' ', $line); | |
293 | my ($filesystem, $blocks, $used, $available, $used_perenctage, $mounted_on) = @values; | |
294 | ||
295 | # Check if the available disk space is more than 300MB. | |
296 | if ($available < 300) { | |
297 | # If there is not enough space, print out an error message. | |
298 | $errormessage = "$Lang::tr{'not enough disk space'} < 300MB, /var $1MB"; | |
52599865 | 299 | |
43263ea6 SS |
300 | # Break loop. |
301 | last; | |
52599865 | 302 | } |
43263ea6 SS |
303 | } |
304 | } | |
52599865 | 305 | |
43263ea6 SS |
306 | # Check if any errors happend. |
307 | unless ($errormessage) { | |
308 | # Call subfunction to download the ruleset. | |
309 | $errormessage = &downloadruleset(); | |
310 | } | |
8f22237b | 311 | |
43263ea6 SS |
312 | # Sleep for 1 second |
313 | sleep(1); | |
52599865 | 314 | |
43263ea6 SS |
315 | # Check if the downloader returend any error message. |
316 | unless ($errormessage) { | |
317 | # Call subfunction to launch oinkmaster. | |
318 | &oinkmaster(); | |
319 | ||
320 | # Sleep for 1 seconds. | |
321 | sleep(1); | |
52599865 | 322 | } |
a232b58c SS |
323 | # Save snort settings. |
324 | } elsif ($cgiparams{'SNORT'} eq $Lang::tr{'save'}) { | |
325 | # Prevent form name from been stored in conf file. | |
326 | delete $cgiparams{'SNORT'}; | |
327 | ||
328 | # Check if an oinkcode has been provided. | |
329 | if ($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. | |
339 | &General::writehash("${General::swroot}/snort/settings", \%cgiparams); | |
340 | ||
a232b58c | 341 | # Call snortctrl to restart snort |
a9a91e5f MT |
342 | system('/usr/local/bin/snortctrl restart >/dev/null'); |
343 | } | |
ac1cfefa MT |
344 | } |
345 | ||
52599865 SS |
346 | # Read-in snortsettings |
347 | &General::readhash("${General::swroot}/snort/settings", \%snortsettings); | |
348 | ||
ac1cfefa MT |
349 | $checked{'ENABLE_SNORT'}{'off'} = ''; |
350 | $checked{'ENABLE_SNORT'}{'on'} = ''; | |
351 | $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'"; | |
352 | $checked{'ENABLE_SNORT_GREEN'}{'off'} = ''; | |
353 | $checked{'ENABLE_SNORT_GREEN'}{'on'} = ''; | |
354 | $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'"; | |
355 | $checked{'ENABLE_SNORT_BLUE'}{'off'} = ''; | |
356 | $checked{'ENABLE_SNORT_BLUE'}{'on'} = ''; | |
357 | $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'"; | |
358 | $checked{'ENABLE_SNORT_ORANGE'}{'off'} = ''; | |
359 | $checked{'ENABLE_SNORT_ORANGE'}{'on'} = ''; | |
360 | $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'"; | |
5a3e0dca | 361 | $selected{'RULES'}{'nothing'} = ''; |
5a3e0dca | 362 | $selected{'RULES'}{'community'} = ''; |
a0fa489f | 363 | $selected{'RULES'}{'emerging'} = ''; |
5a3e0dca MT |
364 | $selected{'RULES'}{'registered'} = ''; |
365 | $selected{'RULES'}{'subscripted'} = ''; | |
366 | $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'"; | |
ac1cfefa MT |
367 | |
368 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
369 | ||
17726644 SS |
370 | ### Java Script ### |
371 | print <<END | |
372 | <script> | |
373 | // Tiny java script function to show/hide the rules | |
374 | // of a given category. | |
375 | function showhide(tblname) { | |
376 | \$("#" + tblname).toggle(); | |
377 | } | |
378 | </script> | |
379 | END | |
380 | ; | |
381 | ||
ac1cfefa MT |
382 | &Header::openbigbox('100%', 'left', '', $errormessage); |
383 | ||
384 | if ($errormessage) { | |
385 | &Header::openbox('100%', 'left', $Lang::tr{'error messages'}); | |
386 | print "<class name='base'>$errormessage\n"; | |
387 | print " </class>\n"; | |
388 | &Header::closebox(); | |
389 | } | |
390 | ||
7cc8a0e5 | 391 | &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'}); |
1504a375 SS |
392 | |
393 | my $rulesdate; | |
394 | ||
395 | # Check if a ruleset allready has been downloaded. | |
396 | if ( -f "$rulestarball"){ | |
397 | # Call stat on the filename to obtain detailed information. | |
398 | my @Info = stat("$rulestarball"); | |
399 | ||
400 | # Grab details about the creation time. | |
401 | $rulesdate = localtime($Info[9]); | |
402 | } | |
403 | ||
ac1cfefa | 404 | print <<END |
1504a375 SS |
405 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> |
406 | <table width='100%' border='0'> | |
407 | <tr> | |
408 | <td class='base' width='25%'> | |
409 | <input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'}>RED Snort | |
410 | </td> | |
411 | ||
412 | <td class='base' width='25%'> | |
413 | <input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'}>GREEN Snort | |
414 | </td> | |
415 | ||
416 | <td class='base' width='25%'> | |
ac1cfefa MT |
417 | END |
418 | ; | |
1504a375 SS |
419 | |
420 | # Check if a blue device is configured. | |
421 | if ($netsettings{'BLUE_DEV'}) { | |
422 | print "<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />BLUE Snort\n"; | |
ac1cfefa | 423 | } |
1504a375 SS |
424 | |
425 | print "</td>\n"; | |
426 | ||
427 | print "<td width='25%'>\n"; | |
428 | ||
429 | # Check if an orange device is configured. | |
430 | if ($netsettings{'ORANGE_DEV'}) { | |
431 | print "<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />ORANGE Snort\n"; | |
ac1cfefa | 432 | } |
1b73b07e | 433 | |
ac1cfefa | 434 | print <<END |
1504a375 SS |
435 | </td> |
436 | </tr> | |
437 | ||
438 | <tr> | |
439 | <td colspan='4'><br><br></td> | |
440 | </tr> | |
441 | ||
442 | <tr> | |
443 | <td colspan='4'><b>$Lang::tr{'ids rules update'}</b></td> | |
444 | </tr> | |
445 | ||
446 | <tr> | |
447 | <td colspan='4'><select name='RULES'> | |
5a3e0dca | 448 | <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option> |
a0fa489f | 449 | <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option> |
5a3e0dca MT |
450 | <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option> |
451 | <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option> | |
452 | <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option> | |
453 | </select> | |
1504a375 SS |
454 | </td> |
455 | </tr> | |
456 | ||
457 | <tr> | |
458 | <td colspan='4'> | |
459 | <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> | |
460 | <br>$Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}</br> | |
461 | </td> | |
462 | </tr> | |
463 | ||
464 | <tr> | |
465 | <td colspan='4' nowrap='nowrap'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}'></td> | |
466 | </tr> | |
467 | ||
468 | <tr> | |
469 | <td colspan='4' align='left'><br> | |
470 | <input type='submit' name='RULESET' value='$Lang::tr{'download new ruleset'}'> $Lang::tr{'updates installed'}: $rulesdate | |
471 | </td> | |
472 | ||
473 | </tr> | |
474 | </table> | |
475 | ||
476 | <br><br> | |
477 | ||
478 | <table width='100%'> | |
479 | <tr> | |
480 | <td align='right'><input type='submit' name='SNORT' value='$Lang::tr{'save'}' /></td> | |
481 | </tr> | |
482 | </table> | |
ac1cfefa MT |
483 | </form> |
484 | END | |
485 | ; | |
486 | ||
ac1cfefa | 487 | &Header::closebox(); |
fbfdb241 | 488 | |
f7fcd1c0 | 489 | &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'}); |
298723b9 SS |
490 | print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n"; |
491 | ||
f7fcd1c0 | 492 | # Output display table for rule files |
17726644 | 493 | print "<table width='100%'>\n"; |
ce0e83b3 | 494 | |
17726644 SS |
495 | # Local variable required for java script to show/hide |
496 | # rules of a rulefile. | |
497 | my $rulesetcount = 1; | |
f7fcd1c0 SS |
498 | |
499 | # Loop over each rule file | |
500 | foreach my $rulefile (sort keys(%snortrules)) { | |
501 | my $rulechecked = ''; | |
502 | ||
f7fcd1c0 | 503 | # Check if rule file is enabled |
e5738079 | 504 | if ($snortrules{$rulefile}{'Rulefile'}{'State'} eq 'on') { |
f7fcd1c0 SS |
505 | $rulechecked = 'CHECKED'; |
506 | } | |
3ffee04b | 507 | |
17726644 SS |
508 | # Table and rows for the rule files. |
509 | print"<tr>\n"; | |
510 | print"<td class='base' width='5%'>\n"; | |
e5738079 | 511 | print"<input type='checkbox' name='$rulefile' $rulechecked>\n"; |
17726644 SS |
512 | print"</td>\n"; |
513 | print"<td class='base' width='90%'><b>$rulefile</b></td>\n"; | |
514 | print"<td class='base' width='5%' align='right'>\n"; | |
515 | print"<a href=\"javascript:showhide('ruleset$rulesetcount')\">SHOW</a>\n"; | |
516 | print"</td>\n"; | |
517 | print"</tr>\n"; | |
518 | ||
519 | # Rows which will be hidden per default and will contain the single rules. | |
520 | print"<tr style='display:none' id='ruleset$rulesetcount'>\n"; | |
521 | print"<td colspan='3'>\n"; | |
522 | ||
523 | # Local vars | |
524 | my $lines; | |
525 | my $rows; | |
526 | my $col; | |
527 | ||
528 | # New table for the single rules. | |
529 | print "<table width='100%'>\n"; | |
530 | ||
531 | # Loop over rule file rules | |
532 | foreach my $sid (sort {$a <=> $b} keys(%{$snortrules{$rulefile}})) { | |
f7fcd1c0 | 533 | # Local vars |
17726644 | 534 | my $ruledefchecked = ''; |
f9c2147d | 535 | |
e5738079 SS |
536 | # Skip rulefile itself. |
537 | next if ($sid eq "Rulefile"); | |
538 | ||
17726644 SS |
539 | # If 2 rules have been displayed, start a new row |
540 | if (($lines % 2) == 0) { | |
541 | print "</tr><tr>\n"; | |
3ffee04b | 542 | |
17726644 SS |
543 | # Increase rows by once. |
544 | $rows++; | |
545 | } | |
f7fcd1c0 | 546 | |
17726644 SS |
547 | # Colour lines. |
548 | if ($rows % 2) { | |
549 | $col="bgcolor='$color{'color20'}'"; | |
550 | } else { | |
551 | $col="bgcolor='$color{'color22'}'"; | |
f7fcd1c0 SS |
552 | } |
553 | ||
17726644 | 554 | # Set rule state |
298723b9 | 555 | if ($snortrules{$rulefile}{$sid}{'State'} eq 'on') { |
17726644 | 556 | $ruledefchecked = 'CHECKED'; |
f7fcd1c0 | 557 | } |
3ffee04b | 558 | |
17726644 SS |
559 | # Create rule checkbox and display rule description |
560 | print "<td class='base' width='5%' align='right' $col>\n"; | |
561 | print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n"; | |
562 | print "</td>\n"; | |
563 | print "<td class='base' width='45%' $col>$snortrules{$rulefile}{$sid}{'Description'}</td>"; | |
564 | ||
565 | # Increment rule count | |
566 | $lines++; | |
567 | } | |
568 | ||
569 | # If do not have a second rule for row, create empty cell | |
570 | if (($lines % 2) != 0) { | |
571 | print "<td class='base'></td>"; | |
f7fcd1c0 SS |
572 | } |
573 | ||
574 | # Close display table | |
17726644 | 575 | print "</tr></table></td></tr>"; |
3ffee04b | 576 | |
17726644 SS |
577 | # Finished whith the rule file, increase count. |
578 | $rulesetcount++; | |
f7fcd1c0 | 579 | } |
17726644 SS |
580 | |
581 | # Close display table | |
582 | print "</table>"; | |
583 | ||
f7fcd1c0 | 584 | print <<END |
2999f1d2 CS |
585 | <table width='100%'> |
586 | <tr> | |
298723b9 | 587 | <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'> |
3ffee04b CS |
588 | <!-- space for future online help link --> |
589 | </td> | |
2999f1d2 CS |
590 | </tr> |
591 | </table> | |
298723b9 | 592 | </form> |
3ffee04b CS |
593 | END |
594 | ; | |
f7fcd1c0 | 595 | &Header::closebox(); |
ac1cfefa MT |
596 | &Header::closebigbox(); |
597 | &Header::closepage(); | |
598 | ||
500c5c55 SS |
599 | sub working ($) { |
600 | my $message = $_[0]; | |
601 | ||
602 | &Header::openpage($Lang::tr{'intrusion detection system'}, 1, ''); | |
603 | &Header::openbigbox('100%', 'left', '', $errormessage); | |
604 | &Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='1'>" ); | |
605 | print <<END; | |
606 | <table> | |
607 | <tr> | |
608 | <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td> | |
609 | <td>$message</td> | |
610 | </tr> | |
611 | <tr> | |
612 | <td colspan='2' align='center'> | |
613 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
614 | <input type='image' alt='$Lang::tr{'reload'}' title='$Lang::tr{'reload'}' src='/images/view-refresh.png' /> | |
615 | </form> | |
616 | </tr> | |
617 | </table> | |
618 | END | |
619 | &Header::closebox(); | |
620 | &Header::closebigbox(); | |
621 | &Header::closepage(); | |
622 | exit; | |
a70d269a SS |
623 | } |
624 | ||
43263ea6 SS |
625 | sub downloadruleset { |
626 | # Read proxysettings. | |
627 | my %proxysettings=(); | |
628 | &General::readhash("${General::swroot}/proxy/settings", \%proxysettings); | |
629 | ||
630 | # Load required perl module to handle the download. | |
631 | use LWP::UserAgent; | |
ac1cfefa | 632 | |
43263ea6 SS |
633 | # Init the download module. |
634 | my $downloader = LWP::UserAgent->new; | |
ac1cfefa | 635 | |
43263ea6 SS |
636 | # Set timeout to 10 seconds. |
637 | $downloader->timeout(10); | |
ac1cfefa | 638 | |
43263ea6 SS |
639 | # Check if an upstream proxy is configured. |
640 | if ($proxysettings{'UPSTREAM_PROXY'}) { | |
641 | my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/); | |
642 | my $proxy_url; | |
afe26a05 | 643 | |
43263ea6 SS |
644 | # Check if we got a peer. |
645 | if ($peer) { | |
646 | $proxy_url = "http://"; | |
647 | ||
648 | # Check if the proxy requires authentication. | |
649 | if (($proxysettings{'UPSTREAM_USER'}) && ($proxysettings{'UPSTREAM_PASSWORD'})) { | |
650 | $proxy_url .= "$proxysettings{'UPSTREAM_USER'}\:$proxysettings{'UPSTREAM_PASSWORD'}\@"; | |
651 | } | |
652 | ||
653 | # Add proxy server address and port. | |
654 | $proxy_url .= "$peer\:$peerport"; | |
655 | } else { | |
656 | # Break and return error message. | |
657 | return "$Lang::tr{'could not download latest updates'}"; | |
658 | } | |
659 | ||
660 | # Setup proxy settings. | |
661 | $downloader->proxy('http', $proxy_url); | |
662 | } | |
afe26a05 SS |
663 | |
664 | # Grab the right url based on the configured vendor. | |
43263ea6 | 665 | my $url = $rulesetsources{$snortsettings{'RULES'}}; |
afe26a05 | 666 | |
43263ea6 SS |
667 | # Check if the vendor requires an oinkcode and add it if needed. |
668 | $url =~ s/\<oinkcode\>/$snortsettings{'OINKCODE'}/g; | |
afe26a05 SS |
669 | |
670 | # Abort if no url could be determined for the vendor. | |
43263ea6 SS |
671 | unless ($url) { |
672 | # Abort and return errormessage. | |
673 | return "$Lang::tr{'could not download latest updates'}"; | |
afe26a05 SS |
674 | } |
675 | ||
43263ea6 SS |
676 | # Pass the requested url to the downloader. |
677 | my $request = HTTP::Request->new(GET => $url); | |
ac1cfefa | 678 | |
43263ea6 SS |
679 | # Perform the request and save the output into the "$rulestarball" file. |
680 | my $response = $downloader->request($request, $rulestarball); | |
ac1cfefa | 681 | |
43263ea6 SS |
682 | # Check if there was any error. |
683 | unless ($response->is_success) { | |
684 | return "$response->status_line"; | |
ac1cfefa | 685 | } |
43263ea6 SS |
686 | |
687 | # If we got here, everything worked fine. Return nothing. | |
688 | return; | |
ac1cfefa | 689 | } |
3da6e01b | 690 | |
56dacb58 SS |
691 | sub oinkmaster () { |
692 | # Call oinkmaster to generate ruleset. | |
a6edfcbd | 693 | system("/usr/local/bin/oinkmaster.pl -v -s -u file://$rulestarball -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules 2>&1 |logger -t oinkmaster"); |
56dacb58 SS |
694 | } |
695 | ||
3da6e01b SS |
696 | sub readrulesfile ($) { |
697 | my $rulefile = shift; | |
698 | ||
699 | # Open rule file and read in contents | |
700 | open(RULEFILE, "$snortrulepath/$rulefile") or die "Unable to read $rulefile!"; | |
701 | ||
702 | # Store file content in an array. | |
703 | my @lines = <RULEFILE>; | |
704 | ||
705 | # Close file. | |
706 | close(RULEFILE); | |
707 | ||
708 | # Loop over rule file contents | |
709 | foreach my $line (@lines) { | |
710 | # Remove whitespaces. | |
711 | chomp $line; | |
712 | ||
713 | # Skip blank lines. | |
714 | next if ($line =~ /^\s*$/); | |
715 | ||
716 | # Local vars. | |
717 | my $sid; | |
718 | my $msg; | |
719 | ||
720 | # Gather rule sid and message from the ruleline. | |
721 | if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) { | |
722 | $msg = $1; | |
723 | $sid = $2; | |
724 | ||
725 | # Check if a rule has been found. | |
726 | if ($sid && $msg) { | |
727 | # Add rule to the snortrules hash. | |
728 | $snortrules{$rulefile}{$sid}{'Description'} = $msg; | |
729 | ||
730 | # Grab status of the rule. Check if ruleline starts with a "dash". | |
731 | if ($line =~ /^\#/) { | |
732 | # If yes, the rule is disabled. | |
298723b9 | 733 | $snortrules{$rulefile}{$sid}{'State'} = "off"; |
3da6e01b SS |
734 | } else { |
735 | # Otherwise the rule is enabled. | |
298723b9 | 736 | $snortrules{$rulefile}{$sid}{'State'} = "on"; |
3da6e01b SS |
737 | } |
738 | } | |
739 | } | |
740 | } | |
741 | } |