html/cgi-bin/ddns.cgi

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2007-2014  IPFire Team  <info@ipfire.org>                     #
   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
  24 # enable only the following on debugging purpose
  25 #use warnings;
  26 #use CGI::Carp 'fatalsToBrowser';
  27
  28 require '/var/ipfire/general-functions.pl';
  29 require "${General::swroot}/lang.pl";
  30 require "${General::swroot}/header.pl";
  31
  32 #workaround to suppress a warning when a variable is used only once
  33 my @dummy = ( ${Header::table2colour}, ${Header::colouryellow} );
  34 undef (@dummy);
  35
  36 my %color = ();
  37 my %mainsettings = ();
  38 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  39 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  40
  41 # Config file for basic configuration.
  42 my $settingsfile = "${General::swroot}/ddns/settings";
  43
  44 # Config file to store the configured ddns providers.
  45 my $datafile = "${General::swroot}/ddns/config";
  46
  47 # Dynamic ddns programm call.
  48 my @ddnsprog = ("/usr/bin/ddns", "--config",
  49                 "/var/ipfire/ddns/ddns.conf",
  50                 "update-all");
  51
  52 my %settings=();
  53 my $errormessage = '';
  54
  55 # DDNS General settings.
  56 $settings{'BEHINDROUTER'} = 'RED_IP';
  57
  58 # Account settings.
  59 $settings{'HOSTNAME'} = '';
  60 $settings{'DOMAIN'} = '';
  61 $settings{'LOGIN'} = '';
  62 $settings{'PASSWORD'} = '';
  63 $settings{'ENABLED'} = '';
  64 $settings{'PROXY'} = '';
  65 $settings{'SERVICE'} = '';
  66
  67 $settings{'ACTION'} = '';
  68
  69 # Get supported ddns providers.
  70 my @providers = &GetProviders();
  71
  72 # Hook to regenerate the configuration files, if cgi got called from command line.
  73 if ($ENV{"REMOTE_ADDR"} eq "") {
  74         &GenerateDDNSConfigFile();
  75         exit(0);
  76 }
  77
  78 &Header::showhttpheaders();
  79
  80 #Get GUI values
  81 &Header::getcgihash(\%settings);
  82
  83 # Read configuration file.
  84 open(FILE, "$datafile") or die "Unable to open $datafile.";
  85 my @current = <FILE>;
  86 close (FILE);
  87
  88 #
  89 # Save General Settings.
  90 #
  91 if ($settings{'ACTION'} eq $Lang::tr{'save'}) {
  92
  93         # Open /var/ipfire/ddns/settings for writing.
  94         open(FILE, ">$settingsfile") or die "Unable to open $settingsfile.";
  95
  96         # Lock file for writing.
  97         flock FILE, 2;
  98
  99         # Check if BEHINDROUTER has been configured.
 100         if ($settings{'BEHINDROUTER'} ne '') {
 101                 print FILE "BEHINDROUTER=$settings{'BEHINDROUTER'}\n";
 102         }
 103
 104         # Close file after writing.
 105         close(FILE);
 106
 107         # Unset given CGI parmas.
 108         undef %settings;
 109
 110         # Update ddns config file.
 111         &GenerateDDNSConfigFile();
 112 }
 113
 114 #
 115 # Toggle enable/disable field.  Field is in second position
 116 #
 117 if ($settings{'ACTION'} eq $Lang::tr{'toggle enable disable'}) {
 118
 119         # Open /var/ipfire/ddns/config for writing.
 120         open(FILE, ">$datafile") or die "Unable to open $datafile.";
 121
 122         # Lock file for writing.
 123         flock FILE, 2;
 124
 125         my @temp;
 126         my $id = 0;
 127
 128         # Read file line by line.
 129         foreach my $line (@current) {
 130
 131                 # Remove newlines.
 132                 chomp($line);
 133
 134                 if ($settings{'ID'} eq $id) {
 135
 136                         # Splitt lines (splitting element is a single ",") and save values into temp array.
 137                         @temp = split(/\,/,$line);
 138
 139                         # Check if we want to toggle ENABLED or WILDCARDS.
 140                         if ($settings{'ENABLED'} ne '') {
 141
 142                                 # Update ENABLED.
 143                                 print FILE "$temp[0],$temp[1],$temp[2],$temp[3],$temp[4],$temp[5],$temp[6],$settings{'ENABLED'}\n";
 144                         }
 145                 } else {
 146
 147                         # Print unmodified line.
 148                         print FILE "$line\n";
 149                 }
 150
 151                 # Increase $id.
 152                 $id++;
 153         }
 154
 155         # Close file after writing.
 156         close(FILE);
 157
 158         # Unset given CGI params.
 159         undef %settings;
 160
 161         # Write out logging notice.
 162         &General::log($Lang::tr{'ddns hostname modified'});
 163
 164         # Update ddns config file.
 165         &GenerateDDNSConfigFile();
 166 }
 167
 168 #
 169 # Add new accounts, or edit existing ones.
 170 #
 171 if (($settings{'ACTION'} eq $Lang::tr{'add'}) || ($settings{'ACTION'} eq $Lang::tr{'update'})) {
 172
 173         # Check if a hostname has been given.
 174         if ($settings{'HOSTNAME'} eq '') {
 175                 $errormessage = $Lang::tr{'hostname not set'};
 176         }
 177
 178         # Check if a valid domainname has been provided.
 179         if (!&General::validdomainname($settings{'HOSTNAME'})) {
 180                 $errormessage = $Lang::tr{'invalid domain name'};
 181         }
 182
 183         # Check if a username has been sent.
 184         if ($settings{'LOGIN'} eq '') {
 185                 $errormessage = $Lang::tr{'username not set'};
 186         }
 187
 188         # Check if a password has been typed in.
 189         # freedns.afraid.org does not require this field.
 190         if (($settings{'PASSWORD'} eq '') && ($settings{'SERVICE'} ne 'freedns.afraid.org') && ($settings{'SERVICE'} ne 'regfish.com')) {
 191                 $errormessage = $Lang::tr{'password not set'};
 192         }
 193
 194         # Go furter if there was no error.
 195         if ( ! $errormessage) {
 196
 197                 # Splitt hostname field into 2 parts for storrage.
 198                 my($hostname, $domain) = split(/\./, $settings{'HOSTNAME'}, 2);
 199
 200                 # Handle enabled checkbox. When the checkbox is selected a "on" will be returned,
 201                 # if the checkbox is not checked nothing is returned in this case we set the value to "off".
 202                 if ($settings{'ENABLED'} ne 'on') {
 203                         $settings{'ENABLED'} = 'off';
 204                 }
 205
 206                 # Handle adding new accounts.
 207                 if ($settings{'ACTION'} eq $Lang::tr{'add'}) {
 208
 209                         # Open /var/ipfire/ddns/config for writing.
 210                         open(FILE, ">>$datafile") or die "Unable to open $datafile.";
 211
 212                         # Lock file for writing.
 213                         flock FILE, 2;
 214
 215                         # Add account data to the file.
 216                         print FILE "$settings{'SERVICE'},$hostname,$domain,$settings{'PROXY'},$settings{'WILDCARDS'},$settings{'LOGIN'},$settings{'PASSWORD'},$settings{'ENABLED'}\n";
 217
 218                         # Close file after writing.
 219                         close(FILE);
 220
 221                         # Write out notice to logfile.
 222                         &General::log($Lang::tr{'ddns hostname added'});
 223
 224                 # Handle account edditing.
 225                 } elsif ($settings{'ACTION'} eq $Lang::tr{'update'}) {
 226
 227                         # Open /var/ipfire/ddns/config for writing.
 228                         open(FILE, ">$datafile") or die "Unable to open $datafile.";
 229
 230                         # Lock file for writing.
 231                         flock FILE, 2;
 232
 233                         my $id = 0;
 234
 235                         # Read file line by line.
 236                         foreach my $line (@current) {
 237
 238                                 if ($settings{'ID'} eq $id) {
 239                                         print FILE "$settings{'SERVICE'},$hostname,$domain,$settings{'PROXY'},$settings{'WILDCARDS'},$settings{'LOGIN'},$settings{'PASSWORD'},$settings{'ENABLED'}\n";
 240                                 } else {
 241                                         print FILE "$line";
 242                                 }
 243
 244                                 # Increase $id.
 245                                 $id++;
 246                         }
 247
 248                         # Close file after writing.
 249                         close(FILE);
 250
 251                         # Write out notice to logfile.
 252                         &General::log($Lang::tr{'ddns hostname modified'});
 253                 }
 254
 255                 # Unset given CGI params.
 256                 undef %settings;
 257
 258                 # Update ddns config file.
 259                 &GenerateDDNSConfigFile();
 260         }
 261 }
 262
 263 #
 264 # Remove existing accounts.
 265 #
 266 if ($settings{'ACTION'} eq $Lang::tr{'remove'}) {
 267
 268         # Open /var/ipfire/ddns/config for writing.
 269         open(FILE, ">$datafile") or die "Unable to open $datafile.";
 270
 271         # Lock file for writing.
 272         flock FILE, 2;
 273
 274         my $id = 0;
 275
 276         # Read file line by line.
 277         foreach my $line (@current) {
 278
 279                 # Write back every line, except the one we want to drop
 280                 # (identified by the ID)
 281                 unless ($settings{'ID'} eq $id) {
 282                         print FILE "$line";
 283                 }
 284
 285                 # Increase id.
 286                 $id++;
 287         }
 288
 289         # Close file after writing.
 290         close(FILE);
 291
 292         # Unset given CGI params.
 293         undef %settings;
 294
 295         # Write out notice to logfile.
 296         &General::log($Lang::tr{'ddns hostname removed'});
 297
 298         # Update ddns config file.
 299         &GenerateDDNSConfigFile();
 300 }
 301
 302 #
 303 # Read items for editing.
 304 #
 305 if ($settings{'ACTION'} eq $Lang::tr{'edit'}) {
 306
 307         my $id = 0;
 308         my @temp;
 309
 310         # Read file line by line.
 311         foreach my $line (@current) {
 312
 313                 if ($settings{'ID'} eq $id) {
 314
 315                         # Remove newlines.
 316                         chomp($line);
 317
 318                         # Splitt lines (splitting element is a single ",") and save values into temp array.
 319                         @temp = split(/\,/,$line);
 320
 321                         $settings{'SERVICE'} = $temp[0];
 322                         $settings{'HOSTNAME'} = "$temp[1].$temp[2]";
 323                         $settings{'PROXY'} = $temp[3];
 324                         $settings{'WILDCARDS'} = $temp[4];
 325                         $settings{'LOGIN'} = $temp[5];
 326                         $settings{'PASSWORD'} = $temp[6];
 327                         $settings{'ENABLED'} = $temp[7];
 328                 }
 329         # Increase $id.
 330         $id++;
 331
 332         }
 333 }
 334
 335 #
 336 # Handle forced updates.
 337 #
 338 if ($settings{'ACTION'} eq $Lang::tr{'instant update'}) {
 339     system(@ddnsprog) == 0 or die "@ddnsprog failed: $?\n";
 340 }
 341
 342 #
 343 # Set default values.
 344 #
 345 if (! $settings{'ACTION'}) {
 346         $settings{'SERVICE'} = 'dyndns.org';
 347         $settings{'ENABLED'} = 'on';
 348 }
 349
 350 &Header::openpage($Lang::tr{'dynamic dns'}, 1, '');
 351 &Header::openbigbox('100%', 'left', '', $errormessage);
 352
 353 # Read file for general ddns settings.
 354 &General::readhash($settingsfile, \%settings);
 355
 356 my %checked =();
 357 $checked{'BEHINDROUTER'}{'RED_IP'} = '';
 358 $checked{'BEHINDROUTER'}{'FETCH_IP'} = '';
 359 $checked{'BEHINDROUTER'}{$settings{'BEHINDROUTER'}} = "checked='checked'";
 360
 361 $checked{'ENABLED'}{'on'} = '';
 362 $checked{'ENABLED'}{'off'} = '';
 363 $checked{'ENABLED'}{$settings{'ENABLED'}} = "checked='checked'";
 364
 365 # Show box for errormessages..
 366 if ($errormessage) {
 367     &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 368     print "<font class='base'>$errormessage&nbsp;</font>";
 369     &Header::closebox();
 370 }
 371
 372 &Header::openbox('100%', 'left', $Lang::tr{'settings'});
 373
 374 ##
 375 # Section for general ddns setup.
 376 print <<END
 377 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 378 <table width='100%'>
 379         <tr>
 380                 <td class='base'>$Lang::tr{'dyn dns source choice'}</td>
 381         </tr>
 382         <tr>
 383                 <td class='base'><input type='radio' name='BEHINDROUTER' value='RED_IP' $checked{'BEHINDROUTER'}{'RED_IP'} />
 384                 $Lang::tr{'use ipfire red ip'}</td>
 385         </tr>
 386         <tr>
 387                 <td class='base'><input type='radio' name='BEHINDROUTER' value='FETCH_IP' $checked{'BEHINDROUTER'}{'FETCH_IP'} />
 388                 $Lang::tr{'fetch ip from'}</td>
 389         </tr>
 390 </table>
 391 <br />
 392 <hr />
 393
 394 <table width='100%'>
 395         <tr>
 396                 <td align='right' valign='top' class='base'><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 397         </tr>
 398 </table>
 399 </form>
 400 END
 401 ;
 402
 403 &Header::closebox();
 404
 405 ##
 406 # Section to add or edit an existing entry.
 407
 408 # Default is add.
 409 my $buttontext = $Lang::tr{'add'};
 410
 411 # Change buttontext and headline if we edit an account.
 412 if ($settings{'ACTION'} eq $Lang::tr{'edit'}) {
 413
 414         # Rename button and print headline for updating.
 415         $buttontext = $Lang::tr{'update'};
 416         &Header::openbox('100%', 'left', $Lang::tr{'edit an existing host'});
 417 } else {
 418
 419         # Otherwise use default button text and show headline for adding a new account.
 420         &Header::openbox('100%', 'left', $Lang::tr{'add a host'});
 421 }
 422
 423 print <<END
 424
 425 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 426 <input type='hidden' name='ID' value='$settings{'ID'}' />
 427 <table width='100%'>
 428         <tr>
 429                 <td width='25%' class='base'>$Lang::tr{'service'}:</td>
 430                 <td width='25%'>
 431 END
 432 ;
 433                 # Generate dropdown menu for service selection.
 434                 print"<select size='1' name='SERVICE'>\n";
 435
 436                 my $selected;
 437
 438                 # Loop to print the providerlist.
 439                 foreach my $provider (@providers) {
 440
 441                         # Check if the current provider needs to be selected.
 442                         if ($provider eq $settings{'SERVICE'}) {
 443                                 $selected = 'selected';
 444                         } else {
 445                                 $selected = "";
 446                         }
 447
 448                         # Print out the HTML option field.
 449                         print "<option value=\"$provider\" $selected>$provider</option>\n";
 450                 }
 451
 452                 print"</select></td>\n";
 453 print <<END
 454                 <td width='20%' class='base'>$Lang::tr{'hostname'}:</td>
 455                 <td width='30%'><input type='text' name='HOSTNAME' value='$settings{'HOSTNAME'}' /></td>
 456         </tr>
 457
 458         <tr>
 459                 <td class='base'>$Lang::tr{'enabled'}</td>
 460                 <td><input type='checkbox' name='ENABLED' $checked{'ENABLED'}{'on'} /></td>
 461                 <td class='base'>$Lang::tr{'username'}</td>
 462                 <td><input type='text' name='LOGIN' value='$settings{'LOGIN'}' /></td>
 463         </tr>
 464
 465         <tr>
 466                 <td class='base'></td>
 467                 <td></td>
 468                 <td class='base'>$Lang::tr{'password'}</td>
 469                 <td><input type='password' name='PASSWORD' value='$settings{'PASSWORD'}' /></td>
 470         </tr>
 471 </table>
 472 <br>
 473 <hr>
 474
 475 <table width='100%'>
 476 <tr>
 477     <td width='30%' align='right' class='base'>
 478         <input type='hidden' name='ACTION' value='$buttontext'>
 479         <input type='submit' name='SUBMIT' value='$buttontext'></td>
 480 </tr>
 481 </table>
 482 </form>
 483 END
 484 ;
 485 &Header::closebox();
 486
 487 ##
 488 # Third section, display all created ddns hosts.
 489 # Re-open file to get changes.
 490 open(FILE, $datafile) or die "Unable to open $datafile.";
 491 @current = <FILE>;
 492 close(FILE);
 493
 494 # Get IP address of the red interface.
 495 my $ip = &General::GetDyndnsRedIP();
 496 my $id = 0;
 497 my $toggle_enabled;
 498
 499 if (@current) {
 500         &Header::openbox('100%', 'left', $Lang::tr{'current hosts'});
 501
 502         print <<END;
 503 <table width='100%' class='tbl'>
 504         <tr>
 505                 <th width='30%' align='center' class='boldbase'><b>$Lang::tr{'service'}</b></th>
 506                 <th width='50%' align='center' class='boldbase'><b>$Lang::tr{'hostname'}</b></th>
 507                 <th width='20%' colspan='3' class='boldbase' align='center'><b>$Lang::tr{'action'}</b></th>
 508         </tr>
 509 END
 510
 511         foreach my $line (@current) {
 512                 # Remove newlines.
 513                 chomp(@current);
 514                 my @temp = split(/\,/,$line);
 515
 516                 # Handle hostname details. Only connect the values with a dott if both are available.
 517                 my $hostname="";
 518
 519                 if (($temp[1]) && ($temp[2])) {
 520                         $hostname="$temp[1].$temp[2]";
 521                 } else {
 522                         $hostname="$temp[1]";
 523                 }
 524
 525                 # Generate value for enable/disable checkbox.
 526                 my $sync = '';
 527                 my $gif = '';
 528                 my $gdesc = '';
 529
 530                 if ($temp[7] eq "on") {
 531                         $gif = 'on.gif';
 532                         $gdesc = $Lang::tr{'click to disable'};
 533
 534                         # Check if the given hostname is a FQDN before doing a nslookup.
 535                         if (&General::validfqdn($hostname)) {
 536                                 $sync = (&General::DyndnsServiceSync ($ip,$temp[1], $temp[2]) ? "<font color='green'>": "<font color='red'>") ;
 537                         }
 538
 539                         $toggle_enabled = 'off';
 540                 } else {
 541                         $sync = "<font color='blue'>";
 542                         $gif = 'off.gif';
 543                         $gdesc = $Lang::tr{'click to enable'};
 544                         $toggle_enabled = 'on';
 545                 }
 546
 547                 # Background color.
 548                 my $col="";
 549
 550                 if ($settings{'ID'} eq $id) {
 551                         $col="bgcolor='${Header::colouryellow}'";
 552                 } elsif (!($temp[0] ~~ @providers)) {
 553                         $col="bgcolor='#FF4D4D'";
 554                 } elsif ($id % 2) {
 555                         $col="bgcolor='$color{'color20'}'";
 556                 } else {
 557                         $col="bgcolor='$color{'color22'}'";
 558                 }
 559
 560                 # The following HTML Code still is part of the loop.
 561                 print <<END;
 562 <tr>
 563         <td align='center' $col><a href='http://$temp[0]'>$temp[0]</a></td>
 564         <td align='center' $col>$sync$temp[1].$sync$temp[2]</td>
 565
 566         <td align='center' $col><form method='post' action='$ENV{'SCRIPT_NAME'}'>
 567                 <input type='hidden' name='ID' value='$id'>
 568                 <input type='hidden' name='ENABLED' value='$toggle_enabled'>
 569                 <input type='hidden' name='ACTION' value='$Lang::tr{'toggle enable disable'}' />
 570                 <input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$gif' alt='$gdesc' title='$gdesc' />
 571         </form></td>
 572
 573         <td align='center' $col><form method='post' action='$ENV{'SCRIPT_NAME'}'>
 574                 <input type='hidden' name='ID' value='$id'>
 575                 <input type='hidden' name='ACTION' value='$Lang::tr{'edit'}' />
 576                 <input type='image' name='$Lang::tr{'edit'}' src='/images/edit.gif' alt='$Lang::tr{'edit'}' title='$Lang::tr{'edit'}' />
 577         </form></td>
 578
 579         <td align='center' $col><form method='post' action='$ENV{'SCRIPT_NAME'}'>
 580                 <input type='hidden' name='ID' value='$id'>
 581                 <input type='hidden' name='ACTION' value='$Lang::tr{'remove'}' />
 582                 <input type='image' name='$Lang::tr{'remove'}' src='/images/delete.gif' alt='$Lang::tr{'remove'}' title='$Lang::tr{'remove'}' />
 583         </form></td>
 584 </tr>
 585 END
 586                 $id++;
 587         }
 588
 589         print <<END;
 590 </table>
 591 <table width='100%'>
 592         <tr>
 593                 <td class='boldbase'>&nbsp;<b>$Lang::tr{'legend'}:&nbsp;</b></td>
 594                 <td><img src='/images/on.gif' alt='$Lang::tr{'click to disable'}' /></td>
 595                 <td class='base'>$Lang::tr{'click to disable'}</td>
 596                 <td>&nbsp;&nbsp;</td>
 597                 <td><img src='/images/off.gif' alt='$Lang::tr{'click to enable'}' /></td>
 598                 <td class='base'>$Lang::tr{'click to enable'}</td>
 599                 <td>&nbsp;&nbsp;</td>
 600                 <td><img src='/images/edit.gif' alt='$Lang::tr{'edit'}' /></td>
 601                 <td class='base'>$Lang::tr{'edit'}</td>
 602                 <td>&nbsp;&nbsp;</td>
 603                 <td><img src='/images/delete.gif' alt='$Lang::tr{'remove'}' /></td>
 604                 <td class='base'>$Lang::tr{'remove'}</td>
 605                 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 606                         <td align='right' width='30%'><input type='submit' name='ACTION' value='$Lang::tr{'instant update'}' /></td>
 607                 </form>
 608         </tr>
 609 </table>
 610 END
 611
 612         &Header::closebox();
 613 }
 614
 615 &Header::closebigbox();
 616 &Header::closepage();
 617
 618 # Function to generate the required configuration file for the DDNS tool.
 619 sub GenerateDDNSConfigFile {
 620         # Open datafile file
 621         open(SETTINGS, "<$datafile") or die "Could not open $datafile.";
 622
 623         open(FILE, ">${General::swroot}/ddns/ddns.conf");
 624
 625         # Global configuration options.
 626         print FILE "[config]\n";
 627
 628         # Check if we guess our IP address by an extranal server.
 629         if ($settings{'BEHINDROUTER'} eq "FETCH_IP") {
 630                 print FILE "guess_external_ip = true\n";
 631         } else {
 632                 print FILE "guess_external_ip = false\n";
 633         }
 634
 635         # Use an upstream proxy and generate proxy url.
 636         my %proxysettings;
 637         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 638         if ($proxysettings{'UPSTREAM_PROXY'}) {
 639                 my $proxy_string = "http://";
 640
 641                 if ($proxysettings{'UPSTREAM_USER'} && $proxysettings{'UPSTREAM_PASSWORD'}) {
 642                         $proxy_string .= "$proxysettings{'UPSTREAM_USER'}:$proxysettings{'UPSTREAM_PASSWORD'}@";
 643                 }
 644
 645                 $proxy_string .= $proxysettings{'UPSTREAM_PROXY'};
 646
 647                 print FILE "proxy = $proxy_string\n";
 648         }
 649
 650         print FILE "\n";
 651
 652         while (<SETTINGS>) {
 653                 my $line = $_;
 654
 655                 # Generate array based on the line content (seperator is a single or multiple space's)
 656                 my @settings = split(/,/, $line);
 657                 my ($provider, $hostname, $domain, $proxy, $wildcards, $username, $password, $enabled) = @settings;
 658
 659                 # Skip entries if they are not (longer) supported.
 660                 next unless ($provider ~~ @providers);
 661
 662                 # Skip disabled entries.
 663                 next if ($enabled eq "off");
 664
 665                 print FILE "[$hostname.$domain]\n";
 666                 print FILE "provider = $provider\n";
 667
 668                 my $use_token = 0;
 669
 670                 # Handle token based auth for various providers.
 671                 if ($provider ~~ ["dns.lightningwirelabs.com", "entrydns.net", "regfish.com"] && $username eq "token") {
 672                         $use_token = 1;
 673
 674                 # Handle token auth for freedns.afraid.org and regfish.com.
 675                 } elsif ($provider ~~ ["freedns.afraid.org", "regfish.com"] && $password eq "") {
 676                         $use_token = 1;
 677                         $password = $username;
 678
 679                 # Handle keys for nsupdate
 680                 } elsif (($provider eq "nsupdate") && $username && $password) {
 681                         print FILE "key = $username\n";
 682                         print FILE "secret = $password\n";
 683
 684                         $username = "";
 685                         $password = "";
 686
 687                 # Handle keys for nsupdate.info
 688                 } elsif (($provider eq "nsupdate.info") && $password) {
 689                         print FILE "secret = $password\n";
 690
 691                         $username = "";
 692                         $password = "";
 693                 }
 694
 695                 # Write auth details.
 696                 if ($use_token) {
 697                         print FILE "token = $password\n";
 698                 } elsif ($username && $password) {
 699                         print FILE "username = $username\n";
 700                         print FILE "password = $password\n";
 701                 }
 702
 703                 # These providers need to be set to only use IPv4.
 704                 if ($provider ~~ ["freedns.afraid.org", "nsupdate.info", "opendns.com", "variomedia.de", "zoneedit.com"]) {
 705                         print FILE "proto = ipv4\n";
 706                 }
 707
 708                 print FILE "\n";
 709         }
 710
 711         close(SETTINGS);
 712         close(FILE);
 713 }
 714
 715 # Function which generates an array (@providers) which contains the supported providers.
 716 sub GetProviders {
 717         # Get supported providers.
 718         open(PROVIDERS, "/usr/bin/ddns list-providers |");
 719
 720         # Create new array to store the providers.
 721         my @providers = ();
 722
 723         while (<PROVIDERS>) {
 724                 my $provider = $_;
 725
 726                 # Remove following newlines.
 727                 chomp($provider);
 728
 729                 # Add provider to the array.
 730                 push(@providers, $provider);
 731         }
 732
 733         close(PROVIDERS);
 734
 735         # Return our array.
 736         return @providers;
 737 }