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1 | #!/usr/bin/perl | |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2020 IPFire Development Team # | |
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 | ||
22 | use strict; | |
23 | use IO::Socket; | |
24 | ||
25 | # enable only the following on debugging purpose | |
26 | #use warnings; | |
27 | #use CGI::Carp 'fatalsToBrowser'; | |
28 | ||
29 | require '/var/ipfire/general-functions.pl'; | |
30 | require "${General::swroot}/geoip-functions.pl"; | |
31 | require "${General::swroot}/ids-functions.pl"; | |
32 | require "${General::swroot}/lang.pl"; | |
33 | require "${General::swroot}/header.pl"; | |
34 | ||
35 | #workaround to suppress a warning when a variable is used only once | |
36 | my @dummy = ( ${Header::colouryellow} ); | |
37 | undef (@dummy); | |
38 | ||
39 | my %cgiparams=(); | |
40 | my %checked=(); | |
41 | my %selected=(); | |
42 | my $errormessage = ''; | |
43 | ||
44 | # Config file which stores the DNS settings. | |
45 | my $settings_file = "${General::swroot}/dns/settings"; | |
46 | ||
47 | # File which stores the configured DNS-Servers. | |
48 | my $servers_file = "${General::swroot}/dns/servers"; | |
49 | ||
50 | # Create files if the does not exist. | |
51 | unless (-f $settings_file) { system("touch $settings_file") }; | |
52 | unless (-f $servers_file) { system("touch $servers_file") }; | |
53 | ||
54 | # File which stores the ISP assigned DNS servers. | |
55 | my @ISP_nameserver_files = ( "/var/run/dns1", "/var/run/dns2" ); | |
56 | ||
57 | # File which contains the ca-certificates. | |
58 | my $ca_certs_file = "/etc/ssl/certs/ca-bundle.crt"; | |
59 | ||
60 | # Server which is used, to determine if the whole DNS system works properly. | |
61 | my $dns_test_server = "ping.ipfire.org"; | |
62 | ||
63 | my $check_servers; | |
64 | ||
65 | my %color = (); | |
66 | my %mainsettings = (); | |
67 | &General::readhash("${General::swroot}/main/settings", \%mainsettings); | |
68 | &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color); | |
69 | ||
70 | &Header::showhttpheaders(); | |
71 | &Header::getcgihash(\%cgiparams); | |
72 | ||
73 | ## | |
74 | # Save general settings. | |
75 | # | |
76 | if ($cgiparams{'GENERAL'} eq $Lang::tr{'save'}) { | |
77 | # Prevent form name from been stored in conf file. | |
78 | delete $cgiparams{'GENERAL'}; | |
79 | ||
80 | # Add value for non-checked checkbox. | |
81 | if ($cgiparams{'USE_ISP_NAMESERVERS'} ne "on") { | |
82 | $cgiparams{'USE_ISP_NAMESERVERS'} = "off"; | |
83 | } | |
84 | ||
85 | # Add value for non-checked checkbox. | |
86 | if ($cgiparams{'ENABLE_SAFE_SEARCH'} ne "on") { | |
87 | $cgiparams{'ENABLE_SAFE_SEARCH'} = "off"; | |
88 | } | |
89 | ||
90 | # Check if using ISP nameservers and TLS is enabled at the same time. | |
91 | if (($cgiparams{'USE_ISP_NAMESERVERS'} eq "on") && ($cgiparams{'PROTO'} eq "TLS")) { | |
92 | $errormessage = $Lang::tr{'dns isp nameservers and tls not allowed'} | |
93 | } | |
94 | ||
95 | # Check if there was an error. | |
96 | if ( ! $errormessage) { | |
97 | ||
98 | # Store settings into settings file. | |
99 | &General::writehash("$settings_file", \%cgiparams); | |
100 | ||
101 | # Call function to handle unbound restart, etc. | |
102 | &_handle_unbound_and_more() | |
103 | } | |
104 | } | |
105 | ||
106 | ### | |
107 | # Add / Edit entries. | |
108 | # | |
109 | if (($cgiparams{'SERVERS'} eq $Lang::tr{'save'}) || ($cgiparams{'SERVERS'} eq $Lang::tr{'update'})) { | |
110 | # Hash to store the generic DNS settings. | |
111 | my %settings = (); | |
112 | ||
113 | # Read-in generic settings. | |
114 | &General::readhash("$settings_file", \%settings); | |
115 | ||
116 | # Check if an IP-address has been given. | |
117 | if ($cgiparams{"NAMESERVER"} eq "") { | |
118 | $errormessage = "$Lang::tr{'dns no address given'}"; | |
119 | } | |
120 | ||
121 | # Check if the given DNS server is valid. | |
122 | elsif(!&General::validip($cgiparams{"NAMESERVER"})) { | |
123 | $errormessage = "$Lang::tr{'invalid ip'}: $cgiparams{'NAMESERVER'}"; | |
124 | } | |
125 | ||
126 | # Check if a TLS is enabled and no TLS_HOSTNAME has benn specified. | |
127 | elsif($settings{'PROTO'} eq "TLS") { | |
128 | unless($cgiparams{"TLS_HOSTNAME"}) { | |
129 | $errormessage = "$Lang::tr{'dns no tls hostname given'}"; | |
130 | } else { | |
131 | # Check if the provided domain is valid. | |
132 | unless(&General::validfqdn($cgiparams{"TLS_HOSTNAME"})) { | |
133 | $errormessage = "$Lang::tr{'invalid ip or hostname'}: $cgiparams{'TLS_HOSTNAME'}"; | |
134 | } | |
135 | } | |
136 | } | |
137 | ||
138 | # Go further if there was no error. | |
139 | if ( ! $errormessage) { | |
140 | # Check if a remark has been entered. | |
141 | $cgiparams{'REMARK'} = &Header::cleanhtml($cgiparams{'REMARK'}); | |
142 | ||
143 | my %dns_servers = (); | |
144 | my $id; | |
145 | my $status; | |
146 | ||
147 | # Read-in configfile. | |
148 | &General::readhasharray($servers_file, \%dns_servers); | |
149 | ||
150 | # Check if we should edit an existing entry and got an ID. | |
151 | if (($cgiparams{'SERVERS'} eq $Lang::tr{'update'}) && ($cgiparams{'ID'})) { | |
152 | # Assin the provided id. | |
153 | $id = $cgiparams{'ID'}; | |
154 | ||
155 | # Undef the given ID. | |
156 | undef($cgiparams{'ID'}); | |
157 | ||
158 | # Grab the configured status of the corresponding entry. | |
159 | $status = $dns_servers{$id}[2]; | |
160 | } else { | |
161 | # Each newly added entry automatically should be enabled. | |
162 | $status = "enabled"; | |
163 | ||
164 | # Generate the ID for the new entry. | |
165 | # | |
166 | # Sort the keys by their ID and store them in an array. | |
167 | my @keys = sort { $a <=> $b } keys %dns_servers; | |
168 | ||
169 | # Reverse the key array. | |
170 | my @reversed = reverse(@keys); | |
171 | ||
172 | # Obtain the last used id. | |
173 | my $last_id = @reversed[0]; | |
174 | ||
175 | # Increase the last id by one and use it as id for the new entry. | |
176 | $id = ++$last_id; | |
177 | ||
178 | # The first allowed id is 3 to keep space for | |
179 | # possible ISP assigned DNS servers. | |
180 | if ($id <= "2") { | |
181 | $id = "3"; | |
182 | } | |
183 | } | |
184 | ||
185 | # Add/Modify the entry to/in the dns_servers hash. | |
186 | $dns_servers{$id} = ["$cgiparams{'NAMESERVER'}", "$cgiparams{'TLS_HOSTNAME'}", "$status", "$cgiparams{'REMARK'}"]; | |
187 | ||
188 | # Write the changed hash to the config file. | |
189 | &General::writehasharray($servers_file, \%dns_servers); | |
190 | ||
191 | # Call function to handle unbound restart, etc. | |
192 | &_handle_unbound_and_more(); | |
193 | } else { | |
194 | # Switch back to previous mode. | |
195 | $cgiparams{'SERVERS'} = $cgiparams{'MODE'}; | |
196 | } | |
197 | ### | |
198 | # Toggle enable / disable. | |
199 | # | |
200 | } elsif ($cgiparams{'SERVERS'} eq $Lang::tr{'toggle enable disable'}) { | |
201 | my %dns_servers = (); | |
202 | ||
203 | # Only go further, if an ID has been passed. | |
204 | if ($cgiparams{'ID'}) { | |
205 | # Assign the given ID. | |
206 | my $id = $cgiparams{'ID'}; | |
207 | ||
208 | # Undef the given ID. | |
209 | undef($cgiparams{'ID'}); | |
210 | ||
211 | # Read-in configfile. | |
212 | &General::readhasharray($servers_file, \%dns_servers); | |
213 | ||
214 | # Grab the configured status of the corresponding entry. | |
215 | my $status = $dns_servers{$id}[2]; | |
216 | ||
217 | # Switch the status. | |
218 | if ($status eq "disabled") { | |
219 | $status = "enabled"; | |
220 | } else { | |
221 | $status = "disabled"; | |
222 | } | |
223 | ||
224 | # Modify the status of the existing entry. | |
225 | $dns_servers{$id} = ["$dns_servers{$id}[0]", "$dns_servers{$id}[1]", "$status", "$dns_servers{$id}[3]"]; | |
226 | ||
227 | # Write the changed hash back to the config file. | |
228 | &General::writehasharray($servers_file, \%dns_servers); | |
229 | ||
230 | # Call function to handle unbound restart, etc. | |
231 | &_handle_unbound_and_more(); | |
232 | } | |
233 | ||
234 | ## Remove entry from DNS servers list. | |
235 | # | |
236 | } elsif ($cgiparams{'SERVERS'} eq $Lang::tr{'remove'}) { | |
237 | my %dns_servers = (); | |
238 | ||
239 | # Read-in configfile. | |
240 | &General::readhasharray($servers_file, \%dns_servers); | |
241 | ||
242 | # Drop entry from the hash. | |
243 | delete($dns_servers{$cgiparams{'ID'}}); | |
244 | ||
245 | # Undef the given ID. | |
246 | undef($cgiparams{'ID'}); | |
247 | ||
248 | # Write the changed hash to the config file. | |
249 | &General::writehasharray($servers_file, \%dns_servers); | |
250 | ||
251 | # Call function to handle unbound restart, etc. | |
252 | &_handle_unbound_and_more(); | |
253 | ||
254 | ## Handle request to check the servers. | |
255 | # | |
256 | } elsif ($cgiparams{'SERVERS'} eq $Lang::tr{'dns check servers'}) { | |
257 | $check_servers = 1; | |
258 | } | |
259 | ||
260 | # Hash to store the generic DNS settings. | |
261 | my %settings = (); | |
262 | ||
263 | # Read-in general DNS settings. | |
264 | &General::readhash("$settings_file", \%settings); | |
265 | ||
266 | # Hash which contains the configured DNS servers. | |
267 | my %dns_servers = (); | |
268 | ||
269 | # Read-in config file. | |
270 | &General::readhasharray("$servers_file", \%dns_servers); | |
271 | ||
272 | &Header::openpage($Lang::tr{'dns'}, 1, ''); | |
273 | ||
274 | &Header::openbigbox('100%', 'left', '', $errormessage); | |
275 | ||
276 | ### | |
277 | # Error messages layout. | |
278 | # | |
279 | if ($errormessage) { | |
280 | &Header::openbox('100%', 'left', $Lang::tr{'error messages'}); | |
281 | print "<class name='base'>$errormessage\n"; | |
282 | print " </class>\n"; | |
283 | &Header::closebox(); | |
284 | } | |
285 | ||
286 | # Handle if a nameserver should be added or edited. | |
287 | if (($cgiparams{'SERVERS'} eq "$Lang::tr{'add'}") || ($cgiparams{'SERVERS'} eq "$Lang::tr{'edit'}")) { | |
288 | # Display the sub page. | |
289 | &show_add_edit_nameserver(); | |
290 | ||
291 | # Close webpage. | |
292 | &Header::closebigbox(); | |
293 | &Header::closepage(); | |
294 | ||
295 | # Finished here for the moment. | |
296 | exit(0); | |
297 | } | |
298 | ||
299 | $cgiparams{'GENERAL'} = ''; | |
300 | $cgiparams{'SERVERS'} = ''; | |
301 | $cgiparams{'NAMESERVER'} = ''; | |
302 | $cgiparams{'TLS_HOSTNAME'} = ''; | |
303 | $cgiparams{'REMARK'} =''; | |
304 | ||
305 | $checked{'USE_ISP_NAMESERVERS'}{'off'} = ''; | |
306 | $checked{'USE_ISP_NAMESERVERS'}{'on'} = ''; | |
307 | $checked{'USE_ISP_NAMESERVERS'}{$settings{'USE_ISP_NAMESERVERS'}} = "checked='checked'"; | |
308 | ||
309 | $checked{'ENABLE_SAFE_SEARCH'}{'off'} = ''; | |
310 | $checked{'ENABLE_SAFE_SEARCH'}{'on'} = ''; | |
311 | $checked{'ENABLE_SAFE_SEARCH'}{$settings{'ENABLE_SAFE_SEARCH'}} = "checked='checked'"; | |
312 | ||
313 | $selected{'PROTO'}{'UDP'} = ''; | |
314 | $selected{'PROTO'}{'TLS'} = ''; | |
315 | $selected{'PROTO'}{'TCP'} = ''; | |
316 | $selected{'PROTO'}{$settings{'PROTO'}} = "selected='selected'"; | |
317 | ||
318 | $selected{'QNAME_MIN'}{'standard'} = ''; | |
319 | $selected{'QNAME_MIN'}{'strict'} = ''; | |
320 | $selected{'QNAME_MIN'}{$settings{'QNAME_MIN'}} = "selected='selected'"; | |
321 | ||
322 | # Display nameserver and configuration sections. | |
323 | &show_nameservers(); | |
324 | &show_general_dns_configuration(); | |
325 | ||
326 | &Header::closebigbox(); | |
327 | &Header::closepage(); | |
328 | ||
329 | ### | |
330 | # General DNS-Servers sektion. | |
331 | # | |
332 | sub show_general_dns_configuration () { | |
333 | &Header::openbox('100%', 'center', "$Lang::tr{'dns configuration'}"); | |
334 | ||
335 | print <<END; | |
336 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
337 | <table width="100%"> | |
338 | <tr> | |
339 | <td width="33%"> | |
340 | $Lang::tr{'dns use isp assigned nameservers'} | |
341 | </td> | |
342 | ||
343 | <td> | |
344 | <input type="checkbox" name="USE_ISP_NAMESERVERS" $checked{'USE_ISP_NAMESERVERS'}{'on'}> | |
345 | </td> | |
346 | </tr> | |
347 | ||
348 | <tr> | |
349 | <td colspan="2"> | |
350 | <br> | |
351 | </td> | |
352 | </tr> | |
353 | ||
354 | <tr> | |
355 | <td width="33%"> | |
356 | $Lang::tr{'dns use protocol for dns queries'} | |
357 | </td> | |
358 | ||
359 | <td> | |
360 | <select name="PROTO"> | |
361 | <option value="UDP" $selected{'PROTO'}{'UDP'}>UDP</option> | |
362 | <option value="TLS" $selected{'PROTO'}{'TLS'}>TLS</option> | |
363 | <option value="TCP" $selected{'PROTO'}{'TCP'}>TCP</option> | |
364 | </select> | |
365 | </td> | |
366 | </tr> | |
367 | ||
368 | <tr> | |
369 | <td colspan="2"> | |
370 | <br> | |
371 | </td> | |
372 | </tr> | |
373 | ||
374 | <tr> | |
375 | <td width="33%"> | |
376 | $Lang::tr{'dns enable safe-search'} | |
377 | </td> | |
378 | ||
379 | <td> | |
380 | <input type="checkbox" name="ENABLE_SAFE_SEARCH" $checked{'ENABLE_SAFE_SEARCH'}{'on'}> | |
381 | </td> | |
382 | </tr> | |
383 | ||
384 | <tr> | |
385 | <td colspan="2"> | |
386 | <br> | |
387 | </td> | |
388 | </tr> | |
389 | ||
390 | <tr> | |
391 | <td width="33%"> | |
392 | $Lang::tr{'dns mode for qname minimisation'} | |
393 | </td> | |
394 | ||
395 | <td> | |
396 | <select name="QNAME_MIN"> | |
397 | <option value="standard" $selected{'QNAME_MIN'}{'standard'}>$Lang::tr{'standard'}</option> | |
398 | <option value="strict" $selected{'QNAME_MIN'}{'strict'}>$Lang::tr{'strict'}</option> | |
399 | </select> | |
400 | </td> | |
401 | </tr> | |
402 | ||
403 | <tr> | |
404 | <td colspan="2" align="right"> | |
405 | <input type="submit" name="GENERAL" value="$Lang::tr{'save'}"> | |
406 | </td> | |
407 | </tr> | |
408 | </table> | |
409 | </form> | |
410 | END | |
411 | ||
412 | &Header::closebox(); | |
413 | } | |
414 | ||
415 | ### | |
416 | # Section to display the configured and used DNS servers. | |
417 | # | |
418 | sub show_nameservers () { | |
419 | &Header::openbox('100%', 'center', "$Lang::tr{'dns title'}"); | |
420 | ||
421 | # Determine if we are running in recursor mode | |
422 | my $recursor = 0; | |
423 | my $unbound_forward = qx(unbound-control forward); | |
424 | if ($unbound_forward =~ m/^off/) { | |
425 | $recursor = 1; | |
426 | } | |
427 | ||
428 | my $dns_status_string; | |
429 | my $dns_status_col; | |
430 | my $dns_working; | |
431 | ||
432 | ||
433 | # Test if the DNS system is working. | |
434 | # | |
435 | # Simple send a request to unbound and check if it can resolve the | |
436 | # DNS test server. | |
437 | my $dns_status_ret = &check_nameserver("127.0.0.1", "$dns_test_server", "UDP", undef, "+timeout=5", "+retry=0"); | |
438 | ||
439 | if ($dns_status_ret eq "2") { | |
440 | $dns_status_string = "$Lang::tr{'working'}"; | |
441 | $dns_status_col = "${Header::colourgreen}"; | |
442 | $dns_working = 1; | |
443 | } else { | |
444 | $dns_status_string = "$Lang::tr{'broken'}"; | |
445 | $dns_status_col = "${Header::colourred}"; | |
446 | } | |
447 | ||
448 | if ($recursor) { | |
449 | $dns_status_string .= " (" . $Lang::tr{'dns recursor mode'} . ")"; | |
450 | } | |
451 | ||
452 | print <<END; | |
453 | <table width='100%'> | |
454 | <tr> | |
455 | <td> | |
456 | <strong>$Lang::tr{'status'}: </strong> | |
457 | <strong><font color='$dns_status_col'>$dns_status_string</font></strong> | |
458 | </td> | |
459 | </tr> | |
460 | </table> | |
461 | END | |
462 | ||
463 | # Check the usage of ISP assigned nameservers is enabled. | |
464 | my $id = 1; | |
465 | ||
466 | # Loop through the array which stores the files. | |
467 | foreach my $file (@ISP_nameserver_files) { | |
468 | # Grab the address of the nameserver. | |
469 | my $address = &General::grab_address_from_file($file); | |
470 | ||
471 | # Check if we got an address. | |
472 | if ($address) { | |
473 | # Add the address to the hash of nameservers. | |
474 | $dns_servers{$id} = [ "$address", "none", | |
475 | ($settings{'USE_ISP_NAMESERVERS'} eq "on") ? "enabled" : "disabled", | |
476 | "$Lang::tr{'dns isp assigned nameserver'}" ]; | |
477 | ||
478 | # Increase id by one. | |
479 | $id++; | |
480 | } | |
481 | } | |
482 | ||
483 | # Check some DNS servers have been configured. In this case | |
484 | # the hash contains at least one key. | |
485 | my $server_amount; | |
486 | if (keys %dns_servers) { | |
487 | # Sort the keys by their ID and store them in an array. | |
488 | my @keys = sort { $a <=> $b } keys %dns_servers; | |
489 | ||
490 | print <<END; | |
491 | <br> | |
492 | ||
493 | <table class="tbl" width='100%'> | |
494 | <tr> | |
495 | <td align="center"> | |
496 | <strong>$Lang::tr{'nameserver'}</strong> | |
497 | </td> | |
498 | ||
499 | <td align="center"> | |
500 | <strong>$Lang::tr{'country'}</strong> | |
501 | </td> | |
502 | ||
503 | <td align="center"> | |
504 | <strong>$Lang::tr{'rdns'}</strong> | |
505 | </td> | |
506 | ||
507 | <td align="center"> | |
508 | <strong>$Lang::tr{'remark'}</strong> | |
509 | </td> | |
510 | END | |
511 | ||
512 | # Check if the status should be displayed. | |
513 | if ($check_servers) { | |
514 | print <<END; | |
515 | <td align="center"> | |
516 | <strong>$Lang::tr{'status'}</strong> | |
517 | </td> | |
518 | END | |
519 | } | |
520 | ||
521 | print <<END; | |
522 | ||
523 | <td align="center" colspan="3"> | |
524 | <strong>$Lang::tr{'action'}</strong> | |
525 | </td> | |
526 | </tr> | |
527 | END | |
528 | ||
529 | # Loop through all entries of the array/hash. | |
530 | foreach my $id (@keys) { | |
531 | # Inrease server_amount. | |
532 | $server_amount++; | |
533 | ||
534 | # Assign data array positions to some nice variable names. | |
535 | my $nameserver = $dns_servers{$id}[0]; | |
536 | my $tls_hostname = $dns_servers{$id}[1]; | |
537 | my $enabled = $dns_servers{$id}[2]; | |
538 | my $remark = $dns_servers{$id}[3]; | |
539 | ||
540 | my $col = ''; | |
541 | my $toggle = ''; | |
542 | my $gif = ''; | |
543 | my $gdesc = ''; | |
544 | my $notice = ""; | |
545 | ||
546 | # Colorize columns. | |
547 | if ($server_amount % 2) { | |
548 | $col="bgcolor='$color{'color22'}'"; } | |
549 | else { | |
550 | $col="bgcolor='$color{'color20'}'"; | |
551 | } | |
552 | ||
553 | if ($enabled eq 'enabled') { | |
554 | $gif='on.gif'; $toggle='off'; $gdesc=$Lang::tr{'click to disable'}; | |
555 | } else { | |
556 | $gif='off.gif'; $toggle='on'; $gdesc=$Lang::tr{'click to enable'}; | |
557 | } | |
558 | ||
559 | my $status; | |
560 | my $status_short; | |
561 | my $status_message; | |
562 | my $status_colour; | |
563 | ||
564 | # Only grab the status if the nameserver is enabled. | |
565 | if (($check_servers) && ($enabled eq "enabled")) { | |
566 | $status = &check_nameserver("$nameserver", "ping.ipfire.org", "$settings{'PROTO'}", "$tls_hostname"); | |
567 | } | |
568 | ||
569 | if (!defined $status) { | |
570 | $status_short = "$Lang::tr{'disabled'}"; | |
571 | ||
572 | # DNSSEC Not supported | |
573 | } elsif ($status eq 0) { | |
574 | $status_short = "$Lang::tr{'broken'}"; | |
575 | $status_message = $Lang::tr{'dnssec not supported'}; | |
576 | $status_colour = ${Header::colourred}; | |
577 | ||
578 | # DNSSEC Aware | |
579 | } elsif ($status eq 1) { | |
580 | $status_short = "$Lang::tr{'not validating'}"; | |
581 | $status_message = $Lang::tr{'dnssec aware'}; | |
582 | $status_colour = ${Header::colourblack}; | |
583 | ||
584 | # DNSSEC Validating | |
585 | } elsif ($status eq 2) { | |
586 | $status_short = "$Lang::tr{'ok'}"; | |
587 | $status_message = $Lang::tr{'dnssec validating'}; | |
588 | $status_colour = ${Header::colourgreen}; | |
589 | ||
590 | # Error | |
591 | } else { | |
592 | $status_short = "$Lang::tr{'error'}"; | |
593 | $status_message = $status; | |
594 | $status_colour = ${Header::colourred}; | |
595 | } | |
596 | ||
597 | # collect more information about name server (rDNS, GeoIP country code) | |
598 | my $ccode = &GeoIP::lookup($nameserver); | |
599 | my $flag_icon = &GeoIP::get_flag_icon($ccode); | |
600 | ||
601 | my $rdns; | |
602 | ||
603 | # Only do the reverse lookup if the system is online. | |
604 | if ($dns_working) { | |
605 | my $iaddr = inet_aton($nameserver); | |
606 | $rdns = gethostbyaddr($iaddr, AF_INET); | |
607 | } | |
608 | ||
609 | if (!$rdns) { $rdns = $Lang::tr{'lookup failed'}; } | |
610 | ||
611 | # Mark ISP name servers as disabled | |
612 | if ($id <= 2 && $enabled eq "disabled") { | |
613 | $nameserver = "<del>$nameserver</del>"; | |
614 | } | |
615 | ||
616 | print <<END; | |
617 | <tr> | |
618 | <td align="center" $col> | |
619 | $nameserver | |
620 | </td> | |
621 | ||
622 | <td align="center" $col> | |
623 | <a href='country.cgi#$ccode'><img src="$flag_icon" border="0" alt="$ccode" title="$ccode" /></a> | |
624 | </td> | |
625 | ||
626 | <td align="center" $col> | |
627 | $rdns | |
628 | </td> | |
629 | ||
630 | <td align="center" $col> | |
631 | $remark | |
632 | </td> | |
633 | END | |
634 | ; | |
635 | # Display server status if requested. | |
636 | if ($check_servers) { | |
637 | print <<END | |
638 | <td align="center" $col> | |
639 | <strong><font color="$status_colour"><abbr title="$status_message">$status_short</abbr></font></strong> | |
640 | </td> | |
641 | END | |
642 | ; | |
643 | } | |
644 | ||
645 | # Check if the id is greater than "2". | |
646 | # | |
647 | # Nameservers with an ID's of one or two are ISP assigned, | |
648 | # and we cannot perform any actions on them, so hide the tools for | |
649 | # them. | |
650 | if ($id > 2) { | |
651 | ||
652 | print <<END; | |
653 | <td align='center' width='5%' $col> | |
654 | <form method='post' name='frma$id' action='$ENV{'SCRIPT_NAME'}'> | |
655 | <input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$gif' title='$gdesc' alt='$gdesc' /> | |
656 | <input type='hidden' name='ID' value='$id' /> | |
657 | <input type='hidden' name='ENABLE' value='$toggle' /> | |
658 | <input type='hidden' name='SERVERS' value='$Lang::tr{'toggle enable disable'}' /> | |
659 | </form> | |
660 | </td> | |
661 | ||
662 | <td align='center' width='5%' $col> | |
663 | <form method='post' name='frmb$id' action='$ENV{'SCRIPT_NAME'}'> | |
664 | <input type='image' name='$Lang::tr{'edit'}' src='/images/edit.gif' title='$Lang::tr{'edit'}' alt='$Lang::tr{'edit'}' /> | |
665 | <input type='hidden' name='ID' value='$id' /> | |
666 | <input type='hidden' name='SERVERS' value='$Lang::tr{'edit'}' /> | |
667 | </form> | |
668 | </td> | |
669 | ||
670 | <td align='center' width='5%' $col> | |
671 | <form method='post' name='frmc$id' action='$ENV{'SCRIPT_NAME'}'> | |
672 | <input type='image' name='$Lang::tr{'remove'}' src='/images/delete.gif' title='$Lang::tr{'remove'}' alt='$Lang::tr{'remove'}' /> | |
673 | <input type='hidden' name='ID' value='$id' /> | |
674 | <input type='hidden' name='SERVERS' value='$Lang::tr{'remove'}' /> | |
675 | </form> | |
676 | </td> | |
677 | END | |
678 | ; | |
679 | } else { | |
680 | print "<td colspan='3' $col> </td>\n"; | |
681 | } | |
682 | ||
683 | ||
684 | print"</tr>\n"; | |
685 | ||
686 | } | |
687 | ||
688 | print"</table>\n"; | |
689 | ||
690 | print"<table width='100%'>\n"; | |
691 | ||
692 | # Check if the usage of the ISP nameservers is enabled and there are more than 2 servers. | |
693 | if (($settings{'USE_ISP_NAMESERVERS'} eq "on") && ($server_amount > 2)) { | |
694 | print <<END; | |
695 | <tr> | |
696 | <td class='boldbase'> <b>$Lang::tr{'legend'}:</b></td> | |
697 | <td> <img src='/images/on.gif' alt='$Lang::tr{'click to disable'}' /></td> | |
698 | <td class='base'>$Lang::tr{'click to disable'}</td> | |
699 | <td> <img src='/images/off.gif' alt='$Lang::tr{'click to enable'}' /></td> | |
700 | <td class='base'>$Lang::tr{'click to enable'}</td> | |
701 | <td> <img src='/images/edit.gif' alt='$Lang::tr{'edit'}' /></td> | |
702 | <td class='base'>$Lang::tr{'edit'}</td> | |
703 | <td> <img src='/images/delete.gif' alt='$Lang::tr{'remove'}' /></td> | |
704 | <td class='base'>$Lang::tr{'remove'}</td> | |
705 | </tr> | |
706 | END | |
707 | ; | |
708 | } | |
709 | print <<END; | |
710 | <tr> | |
711 | <form method="post" action="$ENV{'SCRIPT_NAME'}"> | |
712 | <td colspan="9" align="right"> | |
713 | <input type="submit" name="SERVERS" value="$Lang::tr{'add'}"> | |
714 | <input type="submit" name="SERVERS" value="$Lang::tr{'dns check servers'}"> | |
715 | </td> | |
716 | </form> | |
717 | </tr> | |
718 | </table> | |
719 | END | |
720 | ; | |
721 | } else { | |
722 | print <<END; | |
723 | <table width="100%"> | |
724 | <tr> | |
725 | <form method="post" action="$ENV{'SCRIPT_NAME'}"> | |
726 | <td colspan="6" align="right"><input type="submit" name="SERVERS" value="$Lang::tr{'add'}"></td> | |
727 | </form> | |
728 | </tr> | |
729 | </table> | |
730 | END | |
731 | } | |
732 | ||
733 | &Header::closebox(); | |
734 | } | |
735 | ||
736 | ### | |
737 | # Section to display the add or edit subpage. | |
738 | # | |
739 | sub show_add_edit_nameserver() { | |
740 | print "<form method='post' action='$ENV{'SCRIPT_NAME'}'>\n"; | |
741 | ||
742 | my $buttontext = $Lang::tr{'save'}; | |
743 | my $dnssec_checked; | |
744 | my $dot_checked; | |
745 | if ($cgiparams{'SERVERS'} eq $Lang::tr{'edit'}) { | |
746 | &Header::openbox('100%', 'left', $Lang::tr{'dnsforward edit an entry'}); | |
747 | ||
748 | # Update button text for upate the existing entry. | |
749 | $buttontext = $Lang::tr{'update'}; | |
750 | ||
751 | # Add hidden input for sending ID. | |
752 | print"<input type='hidden' name='ID' value='$cgiparams{'ID'}'>\n"; | |
753 | ||
754 | # Check if an ID has been given. | |
755 | if ($cgiparams{'ID'}) { | |
756 | # Assign cgiparams values. | |
757 | $cgiparams{'NAMESERVER'} = $dns_servers{$cgiparams{'ID'}}[0]; | |
758 | $cgiparams{'TLS_HOSTNAME'} = $dns_servers{$cgiparams{'ID'}}[1]; | |
759 | $cgiparams{'REMARK'} = $dns_servers{$cgiparams{'ID'}}[3]; | |
760 | } | |
761 | } else { | |
762 | &Header::openbox('100%', 'left', $Lang::tr{'dnsforward add a new entry'}); | |
763 | } | |
764 | ||
765 | my $tls_required_image; | |
766 | ||
767 | # If the protocol is TLS, dispaly the required image. | |
768 | if ($settings{'PROTO'} eq "TLS") { | |
769 | $tls_required_image = "<img src='/blob.gif' alt='*'>"; | |
770 | } | |
771 | ||
772 | # Add hidden input to store the mode. | |
773 | print "<input type='hidden' name='MODE' value='$cgiparams{'SERVERS'}'>\n"; | |
774 | ||
775 | print <<END | |
776 | <table width='100%'> | |
777 | <tr> | |
778 | <td width='20%' class='base'>$Lang::tr{'ip address'}: <img src='/blob.gif' alt='*' /></td> | |
779 | <td><input type='text' name='NAMESERVER' value='$cgiparams{"NAMESERVER"}' size='24' /></td> | |
780 | </tr> | |
781 | ||
782 | ||
783 | <tr> | |
784 | <td width='20%' class='base'>$Lang::tr{'dns tls hostname'}: $tls_required_image</td> | |
785 | <td><input type='text' name='TLS_HOSTNAME' value='$cgiparams{'TLS_HOSTNAME'}' size='24'></td> | |
786 | </tr> | |
787 | ||
788 | ||
789 | <tr> | |
790 | <td width ='20%' class='base'>$Lang::tr{'remark'}:</td> | |
791 | <td><input type='text' name='REMARK' value='$cgiparams{'REMARK'}' size='40' maxlength='50' /></td> | |
792 | </tr> | |
793 | </table> | |
794 | ||
795 | <br> | |
796 | <hr> | |
797 | ||
798 | <table width='100%'> | |
799 | <tr> | |
800 | <td class='base' width='55%'><img src='/blob.gif' alt ='*' align='top' /> $Lang::tr{'required field'}</td> | |
801 | <td width='40%' align='right'> | |
802 | <input type="submit" name="SERVERS" value="$buttontext"> | |
803 | <input type="submit" name="SERVERS" value="$Lang::tr{'back'}"> | |
804 | </td> | |
805 | </tr> | |
806 | </table> | |
807 | END | |
808 | ; | |
809 | ||
810 | &Header::closebox(); | |
811 | print "</form>\n"; | |
812 | ||
813 | &Header::closebox(); | |
814 | } | |
815 | ||
816 | # Private function to handle the restart of unbound and more. | |
817 | sub _handle_unbound_and_more () { | |
818 | # Check if the IDS is running. | |
819 | if(&IDS::ids_is_running()) { | |
820 | # Re-generate the file which contains the DNS Server | |
821 | # details. | |
822 | &IDS::generate_dns_servers_file(); | |
823 | ||
824 | # Call suricatactrl to perform a reload. | |
825 | &IDS::call_suricatactrl("restart"); | |
826 | } | |
827 | # Restart unbound | |
828 | system('/usr/local/bin/unboundctrl reload >/dev/null'); | |
829 | } | |
830 | ||
831 | # Check if the system is online (RED is connected). | |
832 | sub red_is_active () { | |
833 | # Check if the "active" file is present. | |
834 | if ( -f "${General::swroot}/red/active") { | |
835 | # Return "1" - True. | |
836 | return 1; | |
837 | } else { | |
838 | # Return nothing - False. | |
839 | return; | |
840 | } | |
841 | } | |
842 | ||
843 | # Function to check a given nameserver against propper work. | |
844 | sub check_nameserver($$$$$) { | |
845 | my ($nameserver, $record, $proto, $tls_hostname, @args) = @_; | |
846 | ||
847 | # Check if the system is online. | |
848 | unless (&red_is_active()) { | |
849 | return "$Lang::tr{'system is offline'}"; | |
850 | } | |
851 | ||
852 | # Default values. | |
853 | my @command = ("kdig", "+dnssec", | |
854 | "+bufsize=1232", @args); | |
855 | ||
856 | # Handle different protols. | |
857 | if ($proto eq "TCP") { | |
858 | # Add TCP switch to the command. | |
859 | push(@command, "+tcp"); | |
860 | ||
861 | } elsif($proto eq "TLS") { | |
862 | # Add TLS switch to the command and provide the | |
863 | # path to our file which contains the ca certs. | |
864 | push(@command, "+tls-ca=$ca_certs_file"); | |
865 | ||
866 | # Check if a TLS hostname has been provided. | |
867 | if ($tls_hostname) { | |
868 | # Add TLS hostname to the command. | |
869 | push(@command, "+tls-hostname=$tls_hostname"); | |
870 | } else { | |
871 | return "$Lang::tr{'dns no tls hostname given'}"; | |
872 | } | |
873 | } | |
874 | ||
875 | # Add record to the command array. | |
876 | push(@command, "$record"); | |
877 | ||
878 | # Add nameserver to the command array. | |
879 | push(@command, "\@$nameserver"); | |
880 | ||
881 | # Connect to STDOUT and STDERR. | |
882 | push(@command, "2>&1"); | |
883 | ||
884 | my @output = qx(@command); | |
885 | my $output = join("", @output); | |
886 | ||
887 | my $status = 0; | |
888 | ||
889 | if ($output =~ m/status: (\w+)/) { | |
890 | $status = ($1 eq "NOERROR"); | |
891 | ||
892 | if (!$status) { | |
893 | return -1; | |
894 | } | |
895 | } else { | |
896 | my $warning; | |
897 | ||
898 | while ($output =~ m/WARNING: (.*)/g) { | |
899 | # Add the current grabbed warning to the warning string. | |
900 | $warning .= "$1\; "; | |
901 | } | |
902 | ||
903 | # Return the warning string, if we grabbed at least one. | |
904 | if ($warning) { | |
905 | return $warning; | |
906 | } | |
907 | } | |
908 | ||
909 | my @flags = (); | |
910 | if ($output =~ m/Flags: (.*);/) { | |
911 | @flags = split(/ /, $1); | |
912 | } | |
913 | ||
914 | my $aware = ($output =~ m/RRSIG/); | |
915 | my $validating = (grep(/ad;/, @flags)); | |
916 | ||
917 | return $aware + $validating; | |
918 | } |