html/cgi-bin/captive.cgi

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2016  IPFire Team  <alexander.marx@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 use Encode;
  24 use HTML::Entities();
  25 use File::Basename;
  26 use PDF::API2;
  27 use constant mm => 25.4 / 72;
  28
  29 # enable only the following on debugging purpose
  30 #use warnings;
  31 #use CGI::Carp 'fatalsToBrowser';
  32
  33 require '/var/ipfire/general-functions.pl';
  34 require "${General::swroot}/lang.pl";
  35 require "${General::swroot}/header.pl";
  36
  37 my %session_times = (
  38         3600            => $Lang::tr{'one hour'},
  39         14400           => $Lang::tr{'four hours'},
  40         28800           => $Lang::tr{'eight hours'},
  41         43200           => $Lang::tr{'twelve hours'},
  42         86400           => $Lang::tr{'24 hours'},
  43         604800          => $Lang::tr{'one week'},
  44         1209600         => $Lang::tr{'two weeks'},
  45         2592000         => $Lang::tr{'one month'},
  46         31536000        => $Lang::tr{'one year'},
  47         0               => "- $Lang::tr{'unlimited'} -",
  48 );
  49
  50 my %selected = ();
  51
  52 my $coupons = "${General::swroot}/captive/coupons";
  53 my %couponhash = ();
  54
  55 my $logo = "${General::swroot}/captive/logo.dat";
  56
  57 my %settings=();
  58 my %mainsettings;
  59 my %color;
  60 my %cgiparams=();
  61 my %netsettings=();
  62 my %checked=();
  63 my $errormessage='';
  64 my $clients="${General::swroot}/captive/clients";
  65 my %clientshash=();
  66 my $settingsfile="${General::swroot}/captive/settings";
  67 unless (-e $settingsfile)       { system("touch $settingsfile"); }
  68
  69 &Header::getcgihash(\%cgiparams);
  70
  71 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  72 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  73 &General::readhash("$settingsfile", \%settings) if(-f $settingsfile);
  74 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  75
  76 if ($cgiparams{'ACTION'} eq "export-coupons") {
  77         my $pdf = &generate_pdf();
  78
  79         print "Content-Type: application/pdf\n";
  80         print "Content-Disposition: attachment; filename=captive-portal-coupons.pdf\n";
  81         print "\n"; # end headers
  82
  83         # Send PDF
  84         print $pdf;
  85
  86         exit(0);
  87 }
  88
  89
  90 &Header::showhttpheaders();
  91
  92 if ($cgiparams{'ACTION'} eq $Lang::tr{'save'}) {
  93         my $file = $cgiparams{'logo'};
  94         if ($file) {
  95                 # Check if the file extension is PNG/JPEG
  96                 chomp $file;
  97
  98                 my ($name, $path, $ext) = fileparse($file, qr/\.[^.]*$/);
  99                 if ($ext ne ".png" && $ext ne ".jpg" && $ext ne ".jpeg") {
 100                         $errormessage = $Lang::tr{'Captive wrong ext'};
 101                 }
 102         }
 103
 104         $settings{'ENABLE_GREEN'}               = $cgiparams{'ENABLE_GREEN'};
 105         $settings{'ENABLE_BLUE'}                = $cgiparams{'ENABLE_BLUE'};
 106         $settings{'AUTH'}                               = $cgiparams{'AUTH'};
 107         $settings{'TITLE'}                              = $cgiparams{'TITLE'};
 108         $settings{'COLOR'}                      = $cgiparams{'COLOR'};
 109         $settings{'SESSION_TIME'}               = $cgiparams{'SESSION_TIME'};
 110
 111         if (!$errormessage){
 112                 #Check if we need to upload a new logo
 113                 if ($file) {
 114                         # Save logo
 115                         my ($filehandle) = CGI::upload("logo");
 116
 117                         # XXX check filesize
 118
 119                         open(FILE, ">$logo");
 120                         binmode $filehandle;
 121                         while (<$filehandle>) {
 122                                 print FILE;
 123                         }
 124                         close(FILE);
 125                 }
 126
 127                 &General::writehash("$settingsfile", \%settings);
 128
 129                 # Save terms
 130                 $cgiparams{'TERMS'} = &Header::escape($cgiparams{'TERMS'});
 131                 open(FH, ">:utf8", "/var/ipfire/captive/terms.txt") or die("$!");
 132                 print FH $cgiparams{'TERMS'};
 133                 close(FH);
 134                 $cgiparams{'TERMS'} = "";
 135
 136                 #execute binary to reload firewall rules
 137                 system("/usr/local/bin/captivectrl");
 138
 139                 if ($cgiparams{'ENABLE_BLUE'} eq 'on'){
 140                                 system("/usr/local/bin/wirelessctrl");
 141                 }
 142         }
 143 }
 144
 145 if ($cgiparams{'ACTION'} eq "$Lang::tr{'Captive generate coupons'}") {
 146         #check valid remark
 147         if ($cgiparams{'REMARK'} ne '' && !&validremark($cgiparams{'REMARK'})){
 148                 $errormessage=$Lang::tr{'fwhost err remark'};
 149         }
 150
 151         if (!$errormessage) {
 152                 # Remember selected values
 153                 foreach my $val (("SESSION_TIME", "COUNT", "REMARK")) {
 154                         $settings{$val} = $cgiparams{$val};
 155                 }
 156                 &General::writehash($settingsfile, \%settings);
 157
 158                 &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 159                 my $now = time();
 160
 161                 # Expiry time in seconds
 162                 my $expires = $settings{'SESSION_TIME'};
 163
 164                 my $count = $settings{'COUNT'} || 1;
 165                 while($count-- > 0) {
 166                         # Generate a new code
 167                         my $code = &gencode();
 168
 169                         # Check if the coupon code already exists
 170                         foreach my $key (keys %couponhash) {
 171                                 if($couponhash{$key}[1] eq $code) {
 172                                         # Code already exists, so try again
 173                                         $code = "";
 174                                         $count++;
 175                                         last;
 176                                 }
 177                         }
 178
 179                         next if ($code eq "");
 180
 181                         # Get a new key from hash
 182                         my $key = &General::findhasharraykey(\%couponhash);
 183
 184                         # Initialize all fields
 185                         foreach my $i (0 .. 3) { $couponhash{$key}[$i] = ""; }
 186
 187                         $couponhash{$key}[0] = $now;
 188                         $couponhash{$key}[1] = $code;
 189                         $couponhash{$key}[2] = $expires;
 190                         $couponhash{$key}[3] = $settings{'REMARK'};
 191                 }
 192
 193                 # Save everything to disk
 194                 &General::writehasharray($coupons, \%couponhash);
 195         }
 196 }
 197
 198 if ($cgiparams{'ACTION'} eq 'delete-coupon') {
 199         #deletes an already generated but unused voucher
 200
 201         #read all generated vouchers
 202         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 203         foreach my $key (keys %couponhash) {
 204                 if($cgiparams{'key'} eq $couponhash{$key}[0]){
 205                         #write logenty with decoded remark
 206                         my $rem=HTML::Entities::decode_entities($couponhash{$key}[4]);
 207                         &General::log("Captive", "Delete unused coupon $couponhash{$key}[1] $couponhash{$key}[2] hours valid expires on $couponhash{$key}[3] remark $rem");
 208                         #delete line from hash
 209                         delete $couponhash{$key};
 210                         last;
 211                 }
 212         }
 213         #write back hash
 214         &General::writehasharray($coupons, \%couponhash);
 215 }
 216
 217 if ($cgiparams{'ACTION'} eq 'delete-client') {
 218         #delete voucher and connection in use
 219
 220         #read all active clients
 221         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 222         foreach my $key (keys %clientshash) {
 223                 if($cgiparams{'key'} eq $clientshash{$key}[0]){
 224                         #prepare log entry with decoded remark
 225                         my $rem=HTML::Entities::decode_entities($clientshash{$key}[7]);
 226                         #write logentry
 227                         &General::log("Captive", "Deleted client in use $clientshash{$key}[1] $clientshash{$key}[2] hours valid expires on $clientshash{$key}[3] remark $rem - Connection will be terminated");
 228                         #delete line from hash
 229                         delete $clientshash{$key};
 230                         last;
 231                 }
 232         }
 233         #write back hash
 234         &General::writehasharray("$clients", \%clientshash);
 235         #reload firewallrules to kill connection of client
 236         system("/usr/local/bin/captivectrl");
 237 }
 238
 239 #open webpage, print header and open box
 240 &Header::openpage($Lang::tr{'Captive menu'}, 1, '');
 241 &Header::openbigbox();
 242
 243 # If an error message exists, show a box with the error message
 244 if ($errormessage) {
 245         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 246         print $errormessage;
 247         &Header::closebox();
 248 }
 249
 250 # Prints the config box on the website
 251 &Header::openbox('100%', 'left', $Lang::tr{'Captive config'});
 252 print <<END
 253         <form method='post' action='$ENV{'SCRIPT_NAME'}' enctype="multipart/form-data">\n
 254                 <table width='100%' border="0">
 255 END
 256 ;
 257
 258 #check which parameters have to be enabled (from settings file)
 259 $checked{'ENABLE_GREEN'}{'off'} = '';
 260 $checked{'ENABLE_GREEN'}{'on'} = '';
 261 $checked{'ENABLE_GREEN'}{$settings{'ENABLE_GREEN'}} = "checked='checked'";
 262
 263 $checked{'ENABLE_BLUE'}{'off'} = '';
 264 $checked{'ENABLE_BLUE'}{'on'} = '';
 265 $checked{'ENABLE_BLUE'}{$settings{'ENABLE_BLUE'}} = "checked='checked'";
 266
 267 $checked{'UNLIMITED'}{'off'} = '';
 268 $checked{'UNLIMITED'}{'on'} = '';
 269 $checked{'UNLIMITED'}{$settings{'UNLIMITED'}} = "checked='checked'";
 270
 271 $selected{'AUTH'} = ();
 272 $selected{'AUTH'}{'COUPON'} = "";
 273 $selected{'AUTH'}{'TERMS'} = "";
 274 $selected{'AUTH'}{$settings{'AUTH'}} = "selected";
 275
 276 if ($netsettings{'GREEN_DEV'}){
 277         print <<END;
 278                 <tr>
 279                         <td width='30%'>
 280                                 $Lang::tr{'Captive active on'}
 281                                 <font color='$Header::colourgreen'>$Lang::tr{'green'}</font>
 282                         </td>
 283                         <td>
 284                                 <input type='checkbox' name='ENABLE_GREEN' $checked{'ENABLE_GREEN'}{'on'} />
 285                         </td>
 286                 </tr>
 287 END
 288 }
 289
 290 if ($netsettings{'BLUE_DEV'}){
 291         print <<END;
 292                 <tr>
 293                         <td width='30%'>
 294                                 $Lang::tr{'Captive active on'}
 295                                 <font color='$Header::colourblue'>$Lang::tr{'blue'}</font>
 296                         </td>
 297                         <td>
 298                                 <input type='checkbox' name='ENABLE_BLUE' $checked{'ENABLE_BLUE'}{'on'} />
 299                         </td>
 300                 </tr>
 301 END
 302 }
 303
 304 print<<END
 305         <tr>
 306                 <td>
 307                         $Lang::tr{'Captive authentication'}
 308                 </td>
 309                 <td>
 310                         <select name='AUTH'>
 311                                 <option value="TERMS"  $selected{'AUTH'}{'TERMS'} >$Lang::tr{'Captive terms'}</option>
 312                                 <option value="COUPON" $selected{'AUTH'}{'COUPON'}>$Lang::tr{'Captive coupon'}</option>
 313                         </select>
 314                 </td>
 315         </tr>
 316 END
 317 ;
 318
 319 if ($settings{'AUTH'} eq 'TERMS') {
 320         $selected{'SESSION_TIME'} = ();
 321         foreach my $session_time (keys %session_times) {
 322                 $selected{'SESSION_TIME'}{$session_time} = "";
 323         }
 324         $selected{'SESSION_TIME'}{$settings{'SESSION_TIME'}} = "selected";
 325
 326         print <<END;
 327                 <tr>
 328                         <td>$Lang::tr{'Captive client session expiry time'}</td>
 329                         <td>
 330                                 <select name="SESSION_TIME">
 331 END
 332
 333         foreach my $session_time (sort { $a <=> $b } keys %session_times) {
 334                 print <<END;
 335                                         <option value="$session_time" $selected{'SESSION_TIME'}{$session_time}>
 336                                                 $session_times{$session_time}
 337                                         </option>
 338 END
 339         }
 340
 341         print <<END;
 342                                 </select>
 343                         </td>
 344                 </tr>
 345 END
 346 }
 347
 348 print<<END;
 349         <tr>
 350                 <td colspan="2">
 351                         <br>
 352                         <strong>$Lang::tr{'Captive branding'}</strong>
 353                 </td>
 354         </tr>
 355         <tr>
 356                 <td>
 357                         $Lang::tr{'Captive title'}
 358                 </td>
 359                 <td>
 360                         <input type='text' name='TITLE' value="$settings{'TITLE'}" size='40'>
 361                 </td>
 362         </tr>
 363         <tr>
 364                 <td>$Lang::tr{'Captive brand color'}</td>
 365                 <td>
 366                         <input type="color" name="COLOR" value="$settings{'COLOR'}">
 367                 </td>
 368         </tr>
 369         <tr>
 370                 <td>
 371                         $Lang::tr{'Captive upload logo'}
 372                 </td>
 373                 <td>
 374                         <input type="file" name="logo">
 375                         <br>$Lang::tr{'Captive upload logo recommendations'}
 376                 </td>
 377         </tr>
 378 END
 379
 380 if (-e $logo) {
 381         print <<END;
 382                 <tr>
 383                         <td>$Lang::tr{'Captive logo uploaded'}</td>
 384                         <td>$Lang::tr{'yes'}</td>
 385                 </tr>
 386 END
 387 }
 388
 389 my $terms = &getterms();
 390 print <<END;
 391         <tr>
 392                 <td>$Lang::tr{'Captive terms'}</td>
 393                 <td>
 394                         <textarea cols="50" rows="10" name="TERMS">$terms</textarea>
 395                 </td>
 396         </tr>
 397         <tr>
 398                 <td></td>
 399                 <td align='right'>
 400                         <input type='submit' name='ACTION' value="$Lang::tr{'save'}"/>
 401                 </td>
 402         </tr>
 403         </table></form>
 404 END
 405
 406 &Header::closebox();
 407
 408 #if settings is set to use coupons, the coupon part has to be displayed
 409 if ($settings{'AUTH'} eq 'COUPON') {
 410         &coupons();
 411 }
 412
 413 # Show active clients
 414 &show_clients();
 415
 416 sub getterms() {
 417         my @ret;
 418
 419         open(FILE, "<:utf8", "/var/ipfire/captive/terms.txt");
 420         while(<FILE>) {
 421                 push(@ret, HTML::Entities::decode_entities($_));
 422         }
 423         close(FILE);
 424
 425         return join(/\n/, @ret);
 426 }
 427
 428 sub gencode(){
 429         #generate a random code only letters from A-Z except 'O'  and 0-9
 430         my @chars = ("A".."N", "P".."Z", "0".."9");
 431         my $randomstring;
 432         $randomstring .= $chars[rand @chars] for 1..8;
 433         return $randomstring;
 434 }
 435
 436 sub coupons() {
 437         &Header::openbox('100%', 'left', $Lang::tr{'Captive generate coupons'});
 438
 439         $selected{'SESSION_TIME'} = ();
 440         foreach my $session_time (keys %session_times) {
 441                 $selected{'SESSION_TIME'}{$session_time} = "";
 442         }
 443         $selected{'SESSION_TIME'}{$settings{'SESSION_TIME'}} = "selected";
 444
 445         print <<END;
 446                 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 447                         <table border='0' width='100%'>
 448                                 <tr>
 449                                         <td width='30%'>
 450                                                 $Lang::tr{'Captive vouchervalid'}
 451                                         </td>
 452                                         <td width='70%'>
 453                                                 <select name="SESSION_TIME">
 454 END
 455
 456         foreach my $session_time (sort { $a <=> $b } keys %session_times) {
 457                 print <<END;
 458                                                         <option value="$session_time" $selected{'SESSION_TIME'}{$session_time}>
 459                                                                 $session_times{$session_time}
 460                                                         </option>
 461 END
 462         }
 463
 464         print <<END;
 465                                                 </select>
 466                                         </td>
 467                                 </tr>
 468                                 <tr>
 469                                         <td>$Lang::tr{'remark'}</td>
 470                                         <td>
 471                                                 <input type='text' name='REMARK' size=40>
 472                                         </td>
 473                                 </tr>
 474                                 <tr>
 475                                         <td>$Lang::tr{'Captive generated coupon no'}</td>
 476                                         <td>
 477                                                 <select name="COUNT">
 478                                                         <option value="1">1</option>
 479                                                         <option value="2">2</option>
 480                                                         <option value="3">3</option>
 481                                                         <option value="4">4</option>
 482                                                         <option value="5">5</option>
 483                                                         <option value="6">6</option>
 484                                                         <option value="7">7</option>
 485                                                         <option value="8">8</option>
 486                                                         <option value="9">9</option>
 487                                                         <option value="10">10</option>
 488                                                         <option value="20">20</option>
 489                                                         <option value="50">50</option>
 490                                                         <option value="100">100</option>
 491                                                 </select>
 492                                         </td>
 493                                 </tr>
 494                         </table>
 495
 496                         <div align="right">
 497                                 <input type="submit" name="ACTION" value="$Lang::tr{'Captive generate coupons'}">
 498                         </div>
 499                 </form>
 500 END
 501
 502         &Header::closebox();
 503
 504         # Show all coupons if exist
 505         if (! -z $coupons) {
 506                 &show_coupons();
 507         }
 508 }
 509
 510 sub show_coupons() {
 511         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 512
 513         #if there are already generated but unsused coupons, print a table
 514         &Header::openbox('100%', 'left', $Lang::tr{'Captive issued coupons'});
 515
 516         print <<END;
 517                 <table class='tbl' border='0'>
 518                         <tr>
 519                                 <th align='center' width='15%'>
 520                                         $Lang::tr{'Captive coupon'}
 521                                 </th>
 522                                 <th align='center' width='15%'>$Lang::tr{'Captive expiry time'}</th>
 523                                 <th align='center' width='65%'>$Lang::tr{'remark'}</th>
 524                                 <th align='center' width='5%'>$Lang::tr{'delete'}</th>
 525                         </tr>
 526 END
 527
 528         foreach my $key (keys %couponhash) {
 529                 my $expirytime = $Lang::tr{'Captive nolimit'};
 530                 if ($couponhash{$key}[2] > 0) {
 531                         $expirytime = &General::format_time($couponhash{$key}[2]);
 532                 }
 533
 534                 if ($count++ % 2) {
 535                         $col="bgcolor='$color{'color20'}'";
 536                 } else {
 537                         $col="bgcolor='$color{'color22'}'";
 538                 }
 539
 540                 print <<END;
 541                         <tr>
 542                                 <td $col align="center">
 543                                         <b>$couponhash{$key}[1]</b>
 544                                 </td>
 545                                 <td $col align="center">
 546                                         $expirytime
 547                                 </td>
 548                                 <td $col align="center">
 549                                         $couponhash{$key}[3]
 550                                 </td>
 551                                 <td $col align="center">
 552                                         <form method='post'>
 553                                                 <input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' />
 554                                                 <input type='hidden' name='ACTION' value='delete-coupon' />
 555                                                 <input type='hidden' name='key' value='$couponhash{$key}[0]' />
 556                                         </form>
 557                                 </td>
 558                         </tr>
 559 END
 560         }
 561
 562         print "</table>";
 563
 564         # Download PDF
 565         print <<END;
 566                 <div align="right">
 567                         <form method="POST">
 568                                 <input type="hidden" name="ACTION" value="export-coupons">
 569                                 <input type="submit" value="$Lang::tr{'Captive export coupons'}">
 570                         </form>
 571                 </div>
 572 END
 573
 574         &Header::closebox();
 575 }
 576
 577 sub show_clients() {
 578         # if there are active clients which use coupons show table
 579         return if ( -z $clients || ! -f $clients );
 580
 581         my $count=0;
 582         my $col;
 583
 584         &Header::openbox('100%', 'left', $Lang::tr{'Captive clients'});
 585
 586         print <<END;
 587                 <table class='tbl' width='100%'>
 588                         <tr>
 589                                 <th align='center' width='15%'>$Lang::tr{'Captive coupon'}</th>
 590                                 <th align='center' width='15%'>$Lang::tr{'Captive activated'}</th>
 591                                 <th align='center' width='15%'>$Lang::tr{'Captive expiry time'}</th>
 592                                 <th align='center' width='10%'>$Lang::tr{'Captive mac'}</th>
 593                                 <th align='center' width='43%'>$Lang::tr{'remark'}</th>
 594                                 <th align='center' width='5%'>$Lang::tr{'delete'}</th>
 595                         </tr>
 596 END
 597
 598         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 599         foreach my $key (keys %clientshash) {
 600                 #calculate time from clientshash (starttime)
 601                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 602
 603                 #calculate endtime from clientshash
 604                 my $endtime;
 605                 if ($clientshash{$key}[3] eq '0'){
 606                         $endtime=$Lang::tr{'Captive nolimit'};
 607                 } else {
 608                         $endtime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 609                 }
 610
 611                 if ($count++ % 2) {
 612                         $col="bgcolor='$color{'color20'}'";
 613                 } else {
 614                         $col="bgcolor='$color{'color22'}'";
 615                 }
 616
 617                 my $coupon = ($clientshash{$key}[4] eq "LICENSE") ? $Lang::tr{'Captive terms short'} : $clientshash{$key}[4];
 618
 619                 print <<END;
 620                         <tr>
 621                                 <td $col align="center"><b>$coupon</b></td>
 622                                 <td $col align="center">$starttime</td>
 623                                 <td $col align="center">$endtime</td>
 624                                 <td $col align="center">$clientshash{$key}[0]</td>
 625                                 <td $col align="center">$clientshash{$key}[5]</td>
 626                                 <td $col align="center">
 627                                         <form method='post'>
 628                                                 <input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' />
 629                                                 <input type='hidden' name='ACTION' value='delete-client' />
 630                                                 <input type='hidden' name='key' value='$clientshash{$key}[0]' />
 631                                         </form>
 632                                 </td>
 633                         </tr>
 634 END
 635         }
 636
 637         print "</table>";
 638
 639         &Header::closebox();
 640 }
 641
 642 sub validremark
 643 {
 644         # Checks a hostname against RFC1035
 645         my $remark = $_[0];
 646         # Each part should be at least two characters in length
 647         # but no more than 63 characters
 648         if (length ($remark) < 1 || length ($remark) > 255) {
 649                 return 0;}
 650         # Only valid characters are a-z, A-Z, 0-9 and -
 651         if ($remark !~ /^[a-zäöüA-ZÖÄÜ0-9-.:;\|_()\/\s]*$/) {
 652                 return 0;}
 653         # First character can only be a letter or a digit
 654         if (substr ($remark, 0, 1) !~ /^[a-zäöüA-ZÖÄÜ0-9]*$/) {
 655                 return 0;}
 656         # Last character can only be a letter or a digit
 657         if (substr ($remark, -1, 1) !~ /^[a-zöäüA-ZÖÄÜ0-9.:;_)]*$/) {
 658                 return 0;}
 659         return 1;
 660 }
 661
 662 sub generate_pdf() {
 663         my $pdf = PDF::API2->new();
 664
 665         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = gmtime(time);
 666         my $timestamp = sprintf("D:%04d%02d%02d%02d%02d%02d+00;00", $year+1900, $mon+1, $mday, $hour, $min, $sec);
 667
 668         $pdf->info(
 669                 "Creator"      => $Lang::tr{'Captive portal'},
 670                 "Title"        => $Lang::tr{'Captive portal coupons'},
 671                 "CreationDate" => $timestamp,
 672                 "ModDate"      => $timestamp,
 673         );
 674
 675         # Set page size
 676         $pdf->mediabox("A4");
 677         $pdf->trimbox(28/mm, 27/mm, 182/mm, 270/mm);
 678
 679         # Set font
 680         my $font = $pdf->ttfont("/usr/share/fonts/Ubuntu-R.ttf");
 681
 682         my $page_h_margin = 27/mm;
 683         my $page_v_margin = 28/mm;
 684
 685         my $height = 68/mm;
 686         my $width  = 91/mm;
 687         my $margin =  2/mm;
 688
 689         # Tux Image
 690         my $tux_image = $pdf->image_png("/srv/web/ipfire/html/captive/assets/ipfire.png");
 691         my $logo_height = 12/mm;
 692         my $logo_width  = 12/mm;
 693
 694         my @coupons = ();
 695         my %coupon_expiry_times = ();
 696
 697         # Read coupons
 698         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 699         foreach my $key (keys %couponhash) {
 700                 $coupon_expiry_times{$couponhash{$key}[1]} = $couponhash{$key}[2];
 701                 push @coupons, $couponhash{$key}[1];
 702         }
 703
 704         while (@coupons) {
 705                 # Make a new page
 706                 my $page = $pdf->page();
 707
 708                 # Graphics
 709                 $gfx = $page->gfx();
 710
 711                 # Headline font
 712                 my $f_headline = $page->text();
 713                 $f_headline->font($font, 20);
 714
 715                 # Subheadline font
 716                 my $f_subheadline = $page->text();
 717                 $f_subheadline->font($font, 14);
 718
 719                 # Coupon font
 720                 my $f_coupon = $page->text();
 721                 $f_coupon->font($font, 36);
 722
 723                 # Lifetime
 724                 my $f_lifetime = $page->text();
 725                 $f_lifetime->font($font, 14);
 726
 727                 # Watermark font
 728                 my $f_watermark = $page->text();
 729                 $f_watermark->fillcolor("#666666");
 730                 $f_watermark->font($font, 10);
 731
 732                 my $i = 0;
 733                 while (@coupons && $i < 8) {
 734                         my $coupon = shift @coupons;
 735
 736                         # Box corners
 737                         my $x = ($page_v_margin / 2) + (($i % 2) ? $width : 0);
 738                         my $y = ($page_h_margin / 2) + (int($i / 2) * $height);
 739
 740                         # Weidth and height of the box
 741                         my $w = $width - $margin;
 742                         my $h = $height - $margin;
 743
 744                         # Center
 745                         my $cx = $x + ($w / 2);
 746                         my $cy = $y + ($h / 2);
 747
 748                         # Draw border box
 749                         $gfx->strokecolor("#333333");
 750                         $gfx->linedash(1/mm, 1/mm);
 751                         $gfx->rect($x, $y, $w, $h);
 752                         $gfx->stroke();
 753                         $gfx->endpath();
 754
 755                         # Headline
 756                         $f_headline->translate($cx, ($y + $h - $cy) / 1.7 + $cy);
 757                         $f_subheadline->translate($cx, ($y + $h - $cy) / 2.4 + $cy);
 758
 759                         if ($settings{'TITLE'}) {
 760                                 $f_headline->text_center($settings{'TITLE'});
 761                                 $f_subheadline->text_center(decode("utf8", $Lang::tr{'Captive WiFi coupon'}));
 762                         } else {
 763                                 $f_headline->text_center(decode("utf8", $Lang::tr{'Captive WiFi coupon'}));
 764                         }
 765
 766                         # Coupon
 767                         $f_coupon->translate($cx, $cy);
 768                         $f_coupon->text_center(decode("utf8", $coupon));
 769
 770                         # Show lifetime
 771                         my $expiry_time = $coupon_expiry_times{$coupon};
 772                         $f_lifetime->translate($cx, $cy - ($y + $h - $cy) / 4);
 773                         if ($expiry_time > 0) {
 774                                 my $lifetime = &General::format_time($expiry_time);
 775                                 $f_lifetime->text_center(decode("utf8", $Lang::tr{'Captive valid for'} . " " . $lifetime));
 776                         } else {
 777                                 $f_lifetime->text_center(decode("utf8", $Lang::tr{'Captive nolimit'}));
 778                         }
 779
 780                         # Add watermark
 781                         $gfx->image($tux_image, $x + $w - $logo_width - $margin, $y + $margin, $logo_width, $logo_height);
 782                         $f_watermark->translate($x + $w - ($margin * 2) - $logo_width, $y + ($logo_height / 2));
 783                         $f_watermark->text_right("Powered by IPFire");
 784
 785                         $i++;
 786                 }
 787         }
 788
 789         # Write out the PDF document
 790         return $pdf->stringify();
 791 }
 792
 793 &Header::closebigbox();
 794 &Header::closepage();