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e0639d80 JPT |
1 | #!/usr/bin/perl |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
24d7c5ef | 5 | # Copyright (C) 2020 IPFire Development Team # |
e0639d80 JPT |
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; | |
24d7c5ef | 23 | use IO::Socket; |
e0639d80 JPT |
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'; | |
24d7c5ef | 30 | require "${General::swroot}/geoip-functions.pl"; |
8fbb12f1 | 31 | require "${General::swroot}/ids-functions.pl"; |
e0639d80 JPT |
32 | require "${General::swroot}/lang.pl"; |
33 | require "${General::swroot}/header.pl"; | |
34 | ||
24d7c5ef SS |
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=(); | |
e0639d80 JPT |
42 | my $errormessage = ''; |
43 | ||
24d7c5ef SS |
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. | |
1434fa0d | 55 | my @ISP_nameserver_files = ( "/var/run/dns1", "/var/run/dns2" ); |
24d7c5ef SS |
56 | |
57 | # File which contains the ca-certificates. | |
58 | my $ca_certs_file = "/etc/ssl/certs/ca-bundle.crt"; | |
59 | ||
770ea81e SS |
60 | # Server which is used, to determine if the whole DNS system works properly. |
61 | my $dns_test_server = "ping.ipfire.org"; | |
62 | ||
43140993 SS |
63 | my $check_servers; |
64 | ||
24d7c5ef SS |
65 | my %color = (); |
66 | my %mainsettings = (); | |
67 | &General::readhash("${General::swroot}/main/settings", \%mainsettings); | |
68 | &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color); | |
69 | ||
e0639d80 | 70 | &Header::showhttpheaders(); |
24d7c5ef | 71 | &Header::getcgihash(\%cgiparams); |
e0639d80 | 72 | |
24d7c5ef SS |
73 | ## |
74 | # Save general settings. | |
75 | # | |
76 | if ($cgiparams{'GENERAL'} eq $Lang::tr{'save'}) { | |
77 | # Prevent form name from been stored in conf file. | |
78 | delete $cgiparams{'GENERAL'}; | |
e0639d80 | 79 | |
24d7c5ef SS |
80 | # Add value for non-checked checkbox. |
81 | if ($cgiparams{'USE_ISP_NAMESERVERS'} ne "on") { | |
82 | $cgiparams{'USE_ISP_NAMESERVERS'} = "off"; | |
83 | } | |
e0639d80 | 84 | |
24d7c5ef SS |
85 | # Add value for non-checked checkbox. |
86 | if ($cgiparams{'ENABLE_SAFE_SEARCH'} ne "on") { | |
87 | $cgiparams{'ENABLE_SAFE_SEARCH'} = "off"; | |
88 | } | |
e0639d80 | 89 | |
24d7c5ef SS |
90 | # Store settings into settings file. |
91 | &General::writehash("$settings_file", \%cgiparams); | |
719db1cd SS |
92 | |
93 | # Call function to handle unbound restart, etc. | |
94 | &_handle_unbound_and_more() | |
24d7c5ef SS |
95 | } |
96 | ||
97 | ### | |
98 | # Add / Edit entries. | |
99 | # | |
100 | if (($cgiparams{'SERVERS'} eq $Lang::tr{'save'}) || ($cgiparams{'SERVERS'} eq $Lang::tr{'update'})) { | |
101 | # Hash to store the generic DNS settings. | |
102 | my %settings = (); | |
103 | ||
104 | # Read-in generic settings. | |
105 | &General::readhash("$settings_file", \%settings); | |
e0639d80 | 106 | |
038f962e SS |
107 | # Check if an IP-address has been given. |
108 | if ($cgiparams{"NAMESERVER"} eq "") { | |
109 | $errormessage = "$Lang::tr{'dns no address given'}"; | |
110 | } | |
111 | ||
24d7c5ef | 112 | # Check if the given DNS server is valid. |
038f962e | 113 | elsif(!&General::validip($cgiparams{"NAMESERVER"})) { |
24d7c5ef SS |
114 | $errormessage = "$Lang::tr{'invalid ip'}: $cgiparams{'NAMESERVER'}"; |
115 | } | |
116 | ||
117 | # Check if a TLS is enabled and no TLS_HOSTNAME has benn specified. | |
118 | elsif($settings{'PROTO'} eq "TLS") { | |
119 | unless($cgiparams{"TLS_HOSTNAME"}) { | |
120 | $errormessage = "$Lang::tr{'dns no tls hostname given'}"; | |
121 | } else { | |
122 | # Check if the provided domain is valid. | |
123 | unless(&General::validfqdn($cgiparams{"TLS_HOSTNAME"})) { | |
124 | $errormessage = "$Lang::tr{'invalid ip or hostname'}: $cgiparams{'TLS_HOSTNAME'}"; | |
125 | } | |
e0639d80 | 126 | } |
24d7c5ef SS |
127 | } |
128 | ||
24d7c5ef SS |
129 | # Go further if there was no error. |
130 | if ( ! $errormessage) { | |
131 | # Check if a remark has been entered. | |
132 | $cgiparams{'REMARK'} = &Header::cleanhtml($cgiparams{'REMARK'}); | |
133 | ||
134 | my %dns_servers = (); | |
135 | my $id; | |
136 | my $status; | |
137 | ||
138 | # Read-in configfile. | |
139 | &General::readhasharray($servers_file, \%dns_servers); | |
140 | ||
141 | # Check if we should edit an existing entry and got an ID. | |
142 | if (($cgiparams{'SERVERS'} eq $Lang::tr{'update'}) && ($cgiparams{'ID'})) { | |
143 | # Assin the provided id. | |
144 | $id = $cgiparams{'ID'}; | |
145 | ||
146 | # Undef the given ID. | |
147 | undef($cgiparams{'ID'}); | |
148 | ||
149 | # Grab the configured status of the corresponding entry. | |
150 | $status = $dns_servers{$id}[2]; | |
151 | } else { | |
152 | # Each newly added entry automatically should be enabled. | |
153 | $status = "enabled"; | |
154 | ||
155 | # Generate the ID for the new entry. | |
156 | # | |
157 | # Sort the keys by their ID and store them in an array. | |
158 | my @keys = sort { $a <=> $b } keys %dns_servers; | |
159 | ||
160 | # Reverse the key array. | |
161 | my @reversed = reverse(@keys); | |
162 | ||
163 | # Obtain the last used id. | |
164 | my $last_id = @reversed[0]; | |
165 | ||
166 | # Increase the last id by one and use it as id for the new entry. | |
167 | $id = ++$last_id; | |
168 | ||
169 | # The first allowed id is 3 to keep space for | |
170 | # possible ISP assigned DNS servers. | |
171 | if ($id le "2") { | |
172 | $id = "3"; | |
173 | } | |
e0639d80 | 174 | } |
24d7c5ef SS |
175 | |
176 | # Add/Modify the entry to/in the dns_servers hash. | |
177 | $dns_servers{$id} = ["$cgiparams{'NAMESERVER'}", "$cgiparams{'TLS_HOSTNAME'}", "$status", "$cgiparams{'REMARK'}"]; | |
178 | ||
179 | # Write the changed hash to the config file. | |
180 | &General::writehasharray($servers_file, \%dns_servers); | |
719db1cd SS |
181 | |
182 | # Call function to handle unbound restart, etc. | |
183 | &_handle_unbound_and_more(); | |
24d7c5ef SS |
184 | } else { |
185 | # Switch back to previous mode. | |
186 | $cgiparams{'SERVERS'} = $cgiparams{'MODE'}; | |
187 | } | |
188 | ### | |
189 | # Toggle enable / disable. | |
190 | # | |
191 | } elsif ($cgiparams{'SERVERS'} eq $Lang::tr{'toggle enable disable'}) { | |
192 | my %dns_servers = (); | |
193 | ||
194 | # Only go further, if an ID has been passed. | |
195 | if ($cgiparams{'ID'}) { | |
196 | # Assign the given ID. | |
197 | my $id = $cgiparams{'ID'}; | |
198 | ||
199 | # Undef the given ID. | |
200 | undef($cgiparams{'ID'}); | |
201 | ||
202 | # Read-in configfile. | |
203 | &General::readhasharray($servers_file, \%dns_servers); | |
204 | ||
205 | # Grab the configured status of the corresponding entry. | |
206 | my $status = $dns_servers{$id}[2]; | |
207 | ||
208 | # Switch the status. | |
209 | if ($status eq "disabled") { | |
210 | $status = "enabled"; | |
211 | } else { | |
212 | $status = "disabled"; | |
e0639d80 | 213 | } |
24d7c5ef SS |
214 | |
215 | # Modify the status of the existing entry. | |
216 | $dns_servers{$id} = ["$dns_servers{$id}[0]", "$dns_servers{$id}[1]", "$status", "$dns_servers{$id}[3]"]; | |
217 | ||
218 | # Write the changed hash back to the config file. | |
219 | &General::writehasharray($servers_file, \%dns_servers); | |
8f4bde65 SS |
220 | |
221 | # Call function to handle unbound restart, etc. | |
222 | &_handle_unbound_and_more(); | |
e0639d80 | 223 | } |
24d7c5ef SS |
224 | |
225 | ## Remove entry from DNS servers list. | |
226 | # | |
227 | } elsif ($cgiparams{'SERVERS'} eq $Lang::tr{'remove'}) { | |
228 | my %dns_servers = (); | |
229 | ||
230 | # Read-in configfile. | |
231 | &General::readhasharray($servers_file, \%dns_servers); | |
232 | ||
233 | # Drop entry from the hash. | |
234 | delete($dns_servers{$cgiparams{'ID'}}); | |
235 | ||
236 | # Undef the given ID. | |
237 | undef($cgiparams{'ID'}); | |
238 | ||
239 | # Write the changed hash to the config file. | |
240 | &General::writehasharray($servers_file, \%dns_servers); | |
43140993 | 241 | |
8f4bde65 SS |
242 | # Call function to handle unbound restart, etc. |
243 | &_handle_unbound_and_more(); | |
244 | ||
43140993 SS |
245 | ## Handle request to check the servers. |
246 | # | |
247 | } elsif ($cgiparams{'SERVERS'} eq $Lang::tr{'dns check servers'}) { | |
248 | $check_servers = 1; | |
e0639d80 JPT |
249 | } |
250 | ||
24d7c5ef SS |
251 | # Hash to store the generic DNS settings. |
252 | my %settings = (); | |
253 | ||
254 | # Read-in general DNS settings. | |
255 | &General::readhash("$settings_file", \%settings); | |
256 | ||
257 | # Hash which contains the configured DNS servers. | |
258 | my %dns_servers = (); | |
259 | ||
260 | # Read-in config file. | |
261 | &General::readhasharray("$servers_file", \%dns_servers); | |
262 | ||
263 | &Header::openpage($Lang::tr{'dns'}, 1, ''); | |
264 | ||
265 | &Header::openbigbox('100%', 'left', '', $errormessage); | |
266 | ||
267 | ### | |
268 | # Error messages layout. | |
269 | # | |
270 | if ($errormessage) { | |
271 | &Header::openbox('100%', 'left', $Lang::tr{'error messages'}); | |
272 | print "<class name='base'>$errormessage\n"; | |
273 | print " </class>\n"; | |
274 | &Header::closebox(); | |
e0639d80 JPT |
275 | } |
276 | ||
24d7c5ef SS |
277 | # Handle if a nameserver should be added or edited. |
278 | if (($cgiparams{'SERVERS'} eq "$Lang::tr{'add'}") || ($cgiparams{'SERVERS'} eq "$Lang::tr{'edit'}")) { | |
279 | # Display the sub page. | |
280 | &show_add_edit_nameserver(); | |
281 | ||
282 | # Close webpage. | |
283 | &Header::closebigbox(); | |
284 | &Header::closepage(); | |
285 | ||
286 | # Finished here for the moment. | |
287 | exit(0); | |
2e1432c4 JPT |
288 | } |
289 | ||
24d7c5ef SS |
290 | $cgiparams{'GENERAL'} = ''; |
291 | $cgiparams{'SERVERS'} = ''; | |
292 | $cgiparams{'NAMESERVER'} = ''; | |
293 | $cgiparams{'TLS_HOSTNAME'} = ''; | |
294 | $cgiparams{'REMARK'} =''; | |
295 | ||
296 | $checked{'USE_ISP_NAMESERVERS'}{'off'} = ''; | |
297 | $checked{'USE_ISP_NAMESERVERS'}{'on'} = ''; | |
298 | $checked{'USE_ISP_NAMESERVERS'}{$settings{'USE_ISP_NAMESERVERS'}} = "checked='checked'"; | |
299 | ||
300 | $checked{'ENABLE_SAFE_SEARCH'}{'off'} = ''; | |
301 | $checked{'ENABLE_SAFE_SEARCH'}{'on'} = ''; | |
302 | $checked{'ENABLE_SAFE_SEARCH'}{$settings{'ENABLE_SAFE_SEARCH'}} = "checked='checked'"; | |
303 | ||
304 | $selected{'PROTO'}{'UDP'} = ''; | |
305 | $selected{'PROTO'}{'TLS'} = ''; | |
306 | $selected{'PROTO'}{'TCP'} = ''; | |
307 | $selected{'PROTO'}{$settings{'PROTO'}} = "selected='selected'"; | |
308 | ||
309 | $selected{'QNAME_MIN'}{'standard'} = ''; | |
310 | $selected{'QNAME_MIN'}{'strict'} = ''; | |
311 | $selected{'QNAME_MIN'}{$settings{'QNAME_MIN'}} = "selected='selected'"; | |
312 | ||
313 | # Display nameserver and configuration sections. | |
314 | &show_nameservers(); | |
315 | &show_general_dns_configuration(); | |
316 | ||
317 | &Header::closebigbox(); | |
318 | &Header::closepage(); | |
319 | ||
320 | ### | |
321 | # General DNS-Servers sektion. | |
322 | # | |
323 | sub show_general_dns_configuration () { | |
324 | &Header::openbox('100%', 'center', "$Lang::tr{'dns configuration'}"); | |
325 | ||
326 | print <<END; | |
327 | <form method='post' action='$ENV{'SCRIPT_NAME'}'> | |
328 | <table width="100%"> | |
329 | <tr> | |
330 | <td width="33%"> | |
331 | $Lang::tr{'dns use isp assigned nameservers'} | |
332 | </td> | |
333 | ||
334 | <td> | |
335 | <input type="checkbox" name="USE_ISP_NAMESERVERS" $checked{'USE_ISP_NAMESERVERS'}{'on'}> | |
336 | </td> | |
337 | </tr> | |
338 | ||
339 | <tr> | |
340 | <td colspan="2"> | |
341 | <br> | |
342 | </td> | |
343 | </tr> | |
344 | ||
345 | <tr> | |
346 | <td width="33%"> | |
347 | $Lang::tr{'dns use protocol for dns queries'} | |
348 | </td> | |
349 | ||
350 | <td> | |
351 | <select name="PROTO"> | |
352 | <option value="UDP" $selected{'PROTO'}{'UDP'}>UDP</option> | |
353 | <option value="TLS" $selected{'PROTO'}{'TLS'}>TLS</option> | |
354 | <option value="TCP" $selected{'PROTO'}{'TCP'}>TCP</option> | |
355 | </select> | |
356 | </td> | |
357 | </tr> | |
358 | ||
359 | <tr> | |
360 | <td colspan="2"> | |
361 | <br> | |
362 | </td> | |
363 | </tr> | |
364 | ||
365 | <tr> | |
366 | <td width="33%"> | |
367 | $Lang::tr{'dns enable safe-search'} | |
368 | </td> | |
369 | ||
370 | <td> | |
371 | <input type="checkbox" name="ENABLE_SAFE_SEARCH" $checked{'ENABLE_SAFE_SEARCH'}{'on'}> | |
372 | </td> | |
373 | </tr> | |
374 | ||
375 | <tr> | |
376 | <td colspan="2"> | |
377 | <br> | |
378 | </td> | |
379 | </tr> | |
380 | ||
381 | <tr> | |
382 | <td width="33%"> | |
383 | $Lang::tr{'dns mode for qname minimisation'} | |
384 | </td> | |
385 | ||
386 | <td> | |
387 | <select name="QNAME_MIN"> | |
388 | <option value="standard" $selected{'QNAME_MIN'}{'standard'}>$Lang::tr{'standard'}</option> | |
389 | <option value="strict" $selected{'QNAME_MIN'}{'strict'}>$Lang::tr{'strict'}</option> | |
390 | </select> | |
391 | </td> | |
392 | </tr> | |
393 | ||
394 | <tr> | |
395 | <td colspan="2" align="right"> | |
396 | <input type="submit" name="GENERAL" value="$Lang::tr{'save'}"> | |
397 | </td> | |
398 | </tr> | |
399 | </table> | |
400 | </form> | |
401 | END | |
402 | ||
e0639d80 JPT |
403 | &Header::closebox(); |
404 | } | |
405 | ||
24d7c5ef SS |
406 | ### |
407 | # Section to display the configured and used DNS servers. | |
408 | # | |
409 | sub show_nameservers () { | |
a969acc7 | 410 | &Header::openbox('100%', 'center', "$Lang::tr{'dns title'}"); |
e0639d80 | 411 | |
770ea81e SS |
412 | my $dns_status_string; |
413 | my $dns_status_col; | |
f03f3429 | 414 | my $dns_working; |
770ea81e SS |
415 | |
416 | # Test if the DNS system is working. | |
417 | # | |
418 | # Simple send a request to unbound and check if it can resolve the | |
419 | # DNS test server. | |
420 | my $dns_status_ret = &check_nameserver("127.0.0.1", "$dns_test_server", "UDP"); | |
421 | ||
422 | if ($dns_status_ret eq "2") { | |
423 | $dns_status_string = "$Lang::tr{'working'}"; | |
424 | $dns_status_col = "${Header::colourgreen}"; | |
f03f3429 | 425 | $dns_working = 1; |
770ea81e | 426 | } else { |
46cc88ed | 427 | $dns_status_string = "$Lang::tr{'broken'}"; |
770ea81e SS |
428 | $dns_status_col = "${Header::colourred}"; |
429 | } | |
430 | ||
24d7c5ef | 431 | print <<END; |
770ea81e SS |
432 | <table width='100%'> |
433 | <tr> | |
434 | <td> | |
435 | <strong>$Lang::tr{'status'}: </strong> | |
436 | <strong><font color='$dns_status_col'>$dns_status_string</font></strong> | |
437 | </td> | |
438 | </tr> | |
439 | </table> | |
440 | ||
441 | <br> | |
442 | ||
24d7c5ef SS |
443 | <table class="tbl" width='100%'> |
444 | <tr> | |
445 | <td align="center"> | |
446 | <strong>$Lang::tr{'nameserver'}</strong> | |
447 | </td> | |
448 | ||
449 | <td align="center"> | |
450 | <strong>$Lang::tr{'country'}</strong> | |
451 | </td> | |
452 | ||
453 | <td align="center"> | |
454 | <strong>$Lang::tr{'rdns'}</strong> | |
455 | </td> | |
456 | ||
457 | <td align="center"> | |
458 | <strong>$Lang::tr{'remark'}</strong> | |
459 | </td> | |
43140993 SS |
460 | END |
461 | # Check if the status should be displayed. | |
462 | if ($check_servers) { | |
463 | print <<END | |
24d7c5ef SS |
464 | <td align="center"> |
465 | <strong>$Lang::tr{'status'}</strong> | |
466 | </td> | |
43140993 SS |
467 | END |
468 | ; | |
469 | } | |
470 | ||
471 | print <<END | |
e0639d80 | 472 | |
24d7c5ef SS |
473 | <td align="center" colspan="3"> |
474 | <strong>$Lang::tr{'action'}</strong> | |
475 | </td> | |
476 | </tr> | |
830f6177 | 477 | END |
43140993 | 478 | ; |
24d7c5ef SS |
479 | |
480 | # Check the usage of ISP assigned nameservers is enabled. | |
77c7a94c MT |
481 | my $id = 1; |
482 | ||
483 | # Loop through the array which stores the files. | |
484 | foreach my $file (@ISP_nameserver_files) { | |
485 | # Grab the address of the nameserver. | |
97022524 | 486 | my $address = &General::grab_address_from_file($file); |
77c7a94c MT |
487 | |
488 | # Check if we got an address. | |
489 | if ($address) { | |
490 | # Add the address to the hash of nameservers. | |
491 | $dns_servers{$id} = [ "$address", "none", | |
492 | ($settings{'USE_ISP_NAMESERVERS'} eq "on") ? "enabled" : "disabled", | |
493 | "$Lang::tr{'dns isp assigned nameserver'}" ]; | |
494 | ||
495 | # Increase id by one. | |
496 | $id++; | |
24d7c5ef SS |
497 | } |
498 | } | |
499 | ||
500 | # Check some DNS servers have been configured. In this case | |
501 | # the hash contains at least one key. | |
502 | my $server_amount; | |
503 | if (keys %dns_servers) { | |
504 | # Sort the keys by their ID and store them in an array. | |
505 | my @keys = sort { $a <=> $b } keys %dns_servers; | |
506 | ||
507 | # Loop through all entries of the array/hash. | |
508 | foreach my $id (@keys) { | |
509 | # Inrease server_amount. | |
510 | $server_amount++; | |
511 | ||
512 | # Assign data array positions to some nice variable names. | |
513 | my $nameserver = $dns_servers{$id}[0]; | |
514 | my $tls_hostname = $dns_servers{$id}[1]; | |
515 | my $enabled = $dns_servers{$id}[2]; | |
516 | my $remark = $dns_servers{$id}[3]; | |
517 | ||
518 | my $col = ''; | |
519 | my $toggle = ''; | |
520 | my $gif = ''; | |
521 | my $gdesc = ''; | |
522 | my $notice = ""; | |
523 | ||
524 | # Colorize columns. | |
525 | if ($server_amount % 2) { | |
526 | $col="bgcolor='$color{'color22'}'"; } | |
527 | else { | |
528 | $col="bgcolor='$color{'color20'}'"; | |
529 | } | |
530 | ||
531 | if ($enabled eq 'enabled') { | |
532 | $gif='on.gif'; $toggle='off'; $gdesc=$Lang::tr{'click to disable'}; | |
533 | } else { | |
534 | $gif='off.gif'; $toggle='on'; $gdesc=$Lang::tr{'click to enable'}; | |
535 | } | |
536 | ||
537 | my $status; | |
538 | my $status_short; | |
539 | my $status_message; | |
540 | my $status_colour; | |
541 | ||
542 | # Only grab the status if the nameserver is enabled. | |
43140993 | 543 | if (($check_servers) && ($enabled eq "enabled")) { |
24d7c5ef SS |
544 | $status = &check_nameserver("$nameserver", "ping.ipfire.org", "$settings{'PROTO'}", "$tls_hostname"); |
545 | } | |
546 | ||
547 | if (!$status) { | |
548 | $status_short = "$Lang::tr{'disabled'}"; | |
549 | ||
550 | # DNSSEC Not supported | |
551 | } elsif ($status eq 0) { | |
552 | $status_short = "$Lang::tr{'broken'}"; | |
553 | $status_message = $Lang::tr{'dnssec not supported'}; | |
554 | $status_colour = ${Header::colourred}; | |
555 | ||
556 | # DNSSEC Aware | |
557 | } elsif ($status eq 1) { | |
558 | $status_short = "$Lang::tr{'not validating'}"; | |
559 | $status_message = $Lang::tr{'dnssec aware'}; | |
560 | $status_colour = ${Header::colourblack}; | |
561 | ||
562 | # DNSSEC Validating | |
563 | } elsif ($status eq 2) { | |
564 | $status_short = "$Lang::tr{'ok'}"; | |
565 | $status_message = $Lang::tr{'dnssec validating'}; | |
566 | $status_colour = ${Header::colourgreen}; | |
567 | ||
568 | # Error | |
569 | } else { | |
570 | $status_short = "$Lang::tr{'error'}"; | |
571 | $status_message = $status; | |
572 | $status_colour = ${Header::colourred}; | |
573 | } | |
574 | ||
575 | # collect more information about name server (rDNS, GeoIP country code) | |
576 | my $ccode = &GeoIP::lookup($nameserver); | |
577 | my $flag_icon = &GeoIP::get_flag_icon($ccode); | |
578 | ||
25dda4a0 SS |
579 | my $rdns; |
580 | ||
581 | # Only do the reverse lookup if the system is online. | |
f03f3429 | 582 | if ($dns_working) { |
25dda4a0 SS |
583 | my $iaddr = inet_aton($nameserver); |
584 | $rdns = gethostbyaddr($iaddr, AF_INET); | |
585 | } | |
24d7c5ef SS |
586 | |
587 | if (!$rdns) { $rdns = $Lang::tr{'lookup failed'}; } | |
588 | ||
77c7a94c MT |
589 | # Mark ISP name servers as disabled |
590 | if ($id <= 2 && $enabled eq "disabled") { | |
591 | $nameserver = "<del>$nameserver</del>"; | |
592 | } | |
593 | ||
24d7c5ef SS |
594 | print <<END; |
595 | <tr> | |
596 | <td align="center" $col> | |
597 | $nameserver | |
598 | </td> | |
599 | ||
600 | <td align="center" $col> | |
601 | <a href='country.cgi#$ccode'><img src="$flag_icon" border="0" alt="$ccode" title="$ccode" /></a> | |
602 | </td> | |
603 | ||
604 | <td align="center" $col> | |
605 | $rdns | |
606 | </td> | |
607 | ||
608 | <td align="center" $col> | |
609 | $remark | |
610 | </td> | |
830f6177 | 611 | END |
24d7c5ef | 612 | ; |
43140993 SS |
613 | # Display server status if requested. |
614 | if ($check_servers) { | |
615 | print <<END | |
616 | <td align="center" $col> | |
617 | <strong><font color="$status_colour"><abbr title="$status_message">$status_short</abbr></font></strong> | |
618 | </td> | |
619 | END | |
620 | ; | |
621 | } | |
622 | ||
24d7c5ef SS |
623 | # Check if the id is greater than "2". |
624 | # | |
625 | # Nameservers with an ID's of one or two are ISP assigned, | |
626 | # and we cannot perform any actions on them, so hide the tools for | |
627 | # them. | |
628 | if ($id gt "2") { | |
629 | ||
630 | print <<END; | |
631 | <td align='center' width='5%' $col> | |
632 | <form method='post' name='frma$id' action='$ENV{'SCRIPT_NAME'}'> | |
633 | <input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$gif' title='$gdesc' alt='$gdesc' /> | |
634 | <input type='hidden' name='ID' value='$id' /> | |
635 | <input type='hidden' name='ENABLE' value='$toggle' /> | |
636 | <input type='hidden' name='SERVERS' value='$Lang::tr{'toggle enable disable'}' /> | |
637 | </form> | |
638 | </td> | |
639 | ||
640 | <td align='center' width='5%' $col> | |
641 | <form method='post' name='frmb$id' action='$ENV{'SCRIPT_NAME'}'> | |
642 | <input type='image' name='$Lang::tr{'edit'}' src='/images/edit.gif' title='$Lang::tr{'edit'}' alt='$Lang::tr{'edit'}' /> | |
643 | <input type='hidden' name='ID' value='$id' /> | |
644 | <input type='hidden' name='SERVERS' value='$Lang::tr{'edit'}' /> | |
645 | </form> | |
646 | </td> | |
647 | ||
648 | <td align='center' width='5%' $col> | |
649 | <form method='post' name='frmc$id' action='$ENV{'SCRIPT_NAME'}'> | |
650 | <input type='image' name='$Lang::tr{'remove'}' src='/images/delete.gif' title='$Lang::tr{'remove'}' alt='$Lang::tr{'remove'}' /> | |
651 | <input type='hidden' name='ID' value='$id' /> | |
652 | <input type='hidden' name='SERVERS' value='$Lang::tr{'remove'}' /> | |
653 | </form> | |
654 | </td> | |
830f6177 | 655 | END |
24d7c5ef SS |
656 | ; |
657 | } else { | |
658 | print "<td colspan='3' $col> </td>\n"; | |
659 | } | |
660 | ||
661 | ||
662 | print"</tr>\n"; | |
663 | ||
664 | } | |
665 | ||
666 | print"</table>\n"; | |
667 | ||
668 | print"<table width='100%'>\n"; | |
669 | ||
670 | # Check if the usage of the ISP nameservers is enabled and there are more than 2 servers. | |
671 | if (($settings{'USE_ISP_NAMESERVERS'} eq "on") && ($server_amount gt "2")) { | |
672 | print <<END; | |
673 | <tr> | |
674 | <td class='boldbase'> <b>$Lang::tr{'legend'}:</b></td> | |
675 | <td> <img src='/images/on.gif' alt='$Lang::tr{'click to disable'}' /></td> | |
676 | <td class='base'>$Lang::tr{'click to disable'}</td> | |
677 | <td> <img src='/images/off.gif' alt='$Lang::tr{'click to enable'}' /></td> | |
678 | <td class='base'>$Lang::tr{'click to enable'}</td> | |
679 | <td> <img src='/images/edit.gif' alt='$Lang::tr{'edit'}' /></td> | |
680 | <td class='base'>$Lang::tr{'edit'}</td> | |
681 | <td> <img src='/images/delete.gif' alt='$Lang::tr{'remove'}' /></td> | |
682 | <td class='base'>$Lang::tr{'remove'}</td> | |
683 | </tr> | |
830f6177 | 684 | END |
24d7c5ef SS |
685 | ; |
686 | } | |
687 | print <<END; | |
688 | <tr> | |
689 | <form method="post" action="$ENV{'SCRIPT_NAME'}"> | |
43140993 SS |
690 | <td colspan="9" align="right"> |
691 | <input type="submit" name="SERVERS" value="$Lang::tr{'add'}"> | |
692 | <input type="submit" name="SERVERS" value="$Lang::tr{'dns check servers'}"> | |
693 | </td> | |
24d7c5ef SS |
694 | </form> |
695 | </tr> | |
696 | </table> | |
830f6177 | 697 | END |
24d7c5ef SS |
698 | ; |
699 | ||
700 | } else { | |
701 | print <<END; | |
702 | <table width="100%"> | |
703 | <tr> | |
704 | <td colspan="6" align="center"> | |
705 | <br>$Lang::tr{'guardian no entries'}<br> | |
706 | </td> | |
707 | </tr> | |
708 | ||
709 | <tr> | |
710 | <form method="post" action="$ENV{'SCRIPT_NAME'}"> | |
711 | <td colspan="6" align="right"><input type="submit" name="SERVERS" value="$Lang::tr{'add'}"></td> | |
712 | </form> | |
713 | </tr> | |
714 | </table> | |
715 | ||
830f6177 | 716 | END |
24d7c5ef SS |
717 | ; |
718 | } | |
719 | ||
720 | &Header::closebox(); | |
830f6177 | 721 | } |
24d7c5ef SS |
722 | |
723 | ### | |
724 | # Section to display the add or edit subpage. | |
725 | # | |
726 | sub show_add_edit_nameserver() { | |
727 | print "<form method='post' action='$ENV{'SCRIPT_NAME'}'>\n"; | |
728 | ||
729 | my $buttontext = $Lang::tr{'save'}; | |
730 | my $dnssec_checked; | |
731 | my $dot_checked; | |
732 | if ($cgiparams{'SERVERS'} eq $Lang::tr{'edit'}) { | |
733 | &Header::openbox('100%', 'left', $Lang::tr{'dnsforward edit an entry'}); | |
734 | ||
735 | # Update button text for upate the existing entry. | |
736 | $buttontext = $Lang::tr{'update'}; | |
737 | ||
738 | # Add hidden input for sending ID. | |
739 | print"<input type='hidden' name='ID' value='$cgiparams{'ID'}'>\n"; | |
740 | ||
741 | # Check if an ID has been given. | |
742 | if ($cgiparams{'ID'}) { | |
743 | # Assign cgiparams values. | |
744 | $cgiparams{'NAMESERVER'} = $dns_servers{$cgiparams{'ID'}}[0]; | |
745 | $cgiparams{'TLS_HOSTNAME'} = $dns_servers{$cgiparams{'ID'}}[1]; | |
746 | $cgiparams{'REMARK'} = $dns_servers{$cgiparams{'ID'}}[3]; | |
747 | } | |
748 | } else { | |
749 | &Header::openbox('100%', 'left', $Lang::tr{'dnsforward add a new entry'}); | |
750 | } | |
751 | ||
f10fb4bf SS |
752 | my $tls_required_image; |
753 | ||
754 | # If the protocol is TLS, dispaly the required image. | |
755 | if ($settings{'PROTO'} eq "TLS") { | |
756 | $tls_required_image = "<img src='/blob.gif' alt='*'>"; | |
757 | } | |
758 | ||
24d7c5ef SS |
759 | # Add hidden input to store the mode. |
760 | print "<input type='hidden' name='MODE' value='$cgiparams{'SERVERS'}'>\n"; | |
761 | ||
762 | print <<END | |
763 | <table width='100%'> | |
764 | <tr> | |
765 | <td width='20%' class='base'>$Lang::tr{'ip address'}: <img src='/blob.gif' alt='*' /></td> | |
766 | <td><input type='text' name='NAMESERVER' value='$cgiparams{"NAMESERVER"}' size='24' /></td> | |
767 | </tr> | |
f10fb4bf SS |
768 | |
769 | ||
24d7c5ef | 770 | <tr> |
f10fb4bf | 771 | <td width='20%' class='base'>$Lang::tr{'dns tls hostname'}: $tls_required_image</td> |
24d7c5ef SS |
772 | <td><input type='text' name='TLS_HOSTNAME' value='$cgiparams{'TLS_HOSTNAME'}' size='24'></td> |
773 | </tr> | |
24d7c5ef | 774 | |
e0639d80 | 775 | |
24d7c5ef SS |
776 | <tr> |
777 | <td width ='20%' class='base'>$Lang::tr{'remark'}:</td> | |
778 | <td><input type='text' name='REMARK' value='$cgiparams{'REMARK'}' size='40' maxlength='50' /></td> | |
779 | </tr> | |
780 | </table> | |
781 | ||
782 | <br> | |
783 | <hr> | |
784 | ||
785 | <table width='100%'> | |
786 | <tr> | |
787 | <td class='base' width='55%'><img src='/blob.gif' alt ='*' align='top' /> $Lang::tr{'required field'}</td> | |
788 | <td width='40%' align='right'> | |
789 | <input type="submit" name="SERVERS" value="$buttontext"> | |
790 | <input type="submit" name="SERVERS" value="$Lang::tr{'back'}"> | |
791 | </td> | |
792 | </tr> | |
793 | </table> | |
e0639d80 JPT |
794 | END |
795 | ; | |
796 | ||
24d7c5ef SS |
797 | &Header::closebox(); |
798 | print "</form>\n"; | |
e0639d80 | 799 | |
24d7c5ef SS |
800 | &Header::closebox(); |
801 | } | |
e0639d80 | 802 | |
719db1cd SS |
803 | # Private function to handle the restart of unbound and more. |
804 | sub _handle_unbound_and_more () { | |
805 | # Restart unbound | |
4caa0efc | 806 | system('/usr/local/bin/unboundctrl reload >/dev/null'); |
8fbb12f1 SS |
807 | |
808 | # Check if the IDS is running. | |
809 | if(&IDS::ids_is_running()) { | |
810 | # Re-generate the file which contains the DNS Server | |
811 | # details. | |
812 | &IDS::generate_dns_servers_file(); | |
813 | ||
814 | # Call suricatactrl to perform a reload. | |
815 | &IDS::call_suricatactrl("restart"); | |
816 | } | |
719db1cd SS |
817 | } |
818 | ||
f36855fe SS |
819 | # Check if the system is online (RED is connected). |
820 | sub red_is_active () { | |
821 | # Check if the "active" file is present. | |
822 | if ( -f "${General::swroot}/red/active") { | |
823 | # Return "1" - True. | |
824 | return 1; | |
825 | } else { | |
826 | # Return nothing - False. | |
827 | return; | |
828 | } | |
829 | } | |
830 | ||
24d7c5ef SS |
831 | # Function to check a given nameserver against propper work. |
832 | sub check_nameserver($$$$) { | |
833 | my ($nameserver, $record, $proto, $tls_hostname) = @_; | |
834 | ||
70187da6 SS |
835 | # Check if the system is online. |
836 | unless (&red_is_active()) { | |
837 | return "$Lang::tr{'system is offline'}"; | |
838 | } | |
839 | ||
24d7c5ef | 840 | # Default values. |
dab1258a | 841 | my @command = ("kdig", "+timeout=2", "+retry=0", "+dnssec", |
3bf804e8 | 842 | "+bufsize=1232"); |
24d7c5ef SS |
843 | |
844 | # Handle different protols. | |
845 | if ($proto eq "TCP") { | |
846 | # Add TCP switch to the command. | |
847 | push(@command, "+tcp"); | |
848 | ||
849 | } elsif($proto eq "TLS") { | |
850 | # Add TLS switch to the command and provide the | |
851 | # path to our file which contains the ca certs. | |
852 | push(@command, "+tls-ca=$ca_certs_file"); | |
853 | ||
854 | # Check if a TLS hostname has been provided. | |
855 | if ($tls_hostname) { | |
856 | # Add TLS hostname to the command. | |
857 | push(@command, "+tls-hostname=$tls_hostname"); | |
858 | } else { | |
859 | return "$Lang::tr{'dns no tls hostname given'}"; | |
860 | } | |
861 | } | |
862 | ||
863 | # Add record to the command array. | |
864 | push(@command, "$record"); | |
865 | ||
866 | # Add nameserver to the command array. | |
867 | push(@command, "\@$nameserver"); | |
868 | ||
869 | # Connect to STDOUT and STDERR. | |
870 | push(@command, "2>&1"); | |
871 | ||
872 | my @output = qx(@command); | |
873 | my $output = join("", @output); | |
874 | ||
875 | my $status = 0; | |
24d7c5ef SS |
876 | |
877 | if ($output =~ m/status: (\w+)/) { | |
878 | $status = ($1 eq "NOERROR"); | |
879 | ||
880 | if (!$status) { | |
881 | return -1; | |
882 | } | |
984f14bd MT |
883 | } else { |
884 | my $warning; | |
885 | ||
886 | while ($output =~ m/WARNING: (.*)/g) { | |
887 | # Add the current grabbed warning to the warning string. | |
888 | $warning .= "$1\; "; | |
889 | } | |
890 | ||
891 | # Return the warning string, if we grabbed at least one. | |
892 | if ($warning) { | |
893 | return $warning; | |
894 | } | |
24d7c5ef SS |
895 | } |
896 | ||
897 | my @flags = (); | |
898 | if ($output =~ m/Flags: (.*);/) { | |
899 | @flags = split(/ /, $1); | |
900 | } | |
901 | ||
902 | my $aware = ($output =~ m/RRSIG/); | |
71471d9b | 903 | my $validating = (grep(/ad;/, @flags)); |
24d7c5ef SS |
904 | |
905 | return $aware + $validating; | |
906 | } |