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         $settings{'TITLE'}                      = &Header::escape($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 delete logo'}") {
 146         unlink $logo;
 147 }
 148
 149 if ($cgiparams{'ACTION'} eq "$Lang::tr{'Captive generate coupons'}") {
 150         #check valid remark
 151         if ($cgiparams{'REMARK'} ne '' && !&validremark($cgiparams{'REMARK'})){
 152                 $errormessage=$Lang::tr{'fwhost err remark'};
 153         }
 154
 155         if (!$errormessage) {
 156                 # Remember selected values
 157                 foreach my $val (("SESSION_TIME", "COUNT", "REMARK")) {
 158                         $settings{$val} = $cgiparams{$val};
 159                 }
 160                 &General::writehash($settingsfile, \%settings);
 161
 162                 &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 163                 my $now = time();
 164
 165                 # Expiry time in seconds
 166                 my $expires = $settings{'SESSION_TIME'};
 167
 168                 my $count = $settings{'COUNT'} || 1;
 169                 while($count-- > 0) {
 170                         # Generate a new code
 171                         my $code = &gencode();
 172
 173                         # Check if the coupon code already exists
 174                         foreach my $key (keys %couponhash) {
 175                                 if($couponhash{$key}[1] eq $code) {
 176                                         # Code already exists, so try again
 177                                         $code = "";
 178                                         $count++;
 179                                         last;
 180                                 }
 181                         }
 182
 183                         next if ($code eq "");
 184
 185                         # Get a new key from hash
 186                         my $key = &General::findhasharraykey(\%couponhash);
 187
 188                         # Initialize all fields
 189                         foreach my $i (0 .. 3) { $couponhash{$key}[$i] = ""; }
 190
 191                         $couponhash{$key}[0] = $now;
 192                         $couponhash{$key}[1] = $code;
 193                         $couponhash{$key}[2] = $expires;
 194                         $couponhash{$key}[3] = $settings{'REMARK'};
 195                 }
 196
 197                 # Save everything to disk
 198                 &General::writehasharray($coupons, \%couponhash);
 199         }
 200 }
 201
 202 if ($cgiparams{'ACTION'} eq 'delete-coupon') {
 203         #deletes an already generated but unused voucher
 204
 205         #read all generated vouchers
 206         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 207         foreach my $key (keys %couponhash) {
 208                 if($cgiparams{'key'} eq $couponhash{$key}[0]){
 209                         #write logenty with decoded remark
 210                         my $rem=HTML::Entities::decode_entities($couponhash{$key}[4]);
 211                         &General::log("Captive", "Delete unused coupon $couponhash{$key}[1] $couponhash{$key}[2] hours valid expires on $couponhash{$key}[3] remark $rem");
 212                         #delete line from hash
 213                         delete $couponhash{$key};
 214                         last;
 215                 }
 216         }
 217         #write back hash
 218         &General::writehasharray($coupons, \%couponhash);
 219 }
 220
 221 if ($cgiparams{'ACTION'} eq 'delete-client') {
 222         #delete voucher and connection in use
 223
 224         #read all active clients
 225         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 226         foreach my $key (keys %clientshash) {
 227                 if($cgiparams{'key'} eq $clientshash{$key}[0]){
 228                         #prepare log entry with decoded remark
 229                         my $rem=HTML::Entities::decode_entities($clientshash{$key}[7]);
 230                         #write logentry
 231                         &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");
 232                         #delete line from hash
 233                         delete $clientshash{$key};
 234                         last;
 235                 }
 236         }
 237         #write back hash
 238         &General::writehasharray("$clients", \%clientshash);
 239         #reload firewallrules to kill connection of client
 240         system("/usr/local/bin/captivectrl");
 241 }
 242
 243 #open webpage, print header and open box
 244 &Header::openpage($Lang::tr{'Captive'}, 1, '');
 245 &Header::openbigbox();
 246
 247 # If an error message exists, show a box with the error message
 248 if ($errormessage) {
 249         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 250         print $errormessage;
 251         &Header::closebox();
 252 }
 253
 254 # Prints the config box on the website
 255 &Header::openbox('100%', 'left', $Lang::tr{'Captive config'});
 256 print <<END
 257         <form method='post' action='$ENV{'SCRIPT_NAME'}' enctype="multipart/form-data">\n
 258                 <table width='100%' border="0">
 259 END
 260 ;
 261
 262 #check which parameters have to be enabled (from settings file)
 263 $checked{'ENABLE_GREEN'}{'off'} = '';
 264 $checked{'ENABLE_GREEN'}{'on'} = '';
 265 $checked{'ENABLE_GREEN'}{$settings{'ENABLE_GREEN'}} = "checked='checked'";
 266
 267 $checked{'ENABLE_BLUE'}{'off'} = '';
 268 $checked{'ENABLE_BLUE'}{'on'} = '';
 269 $checked{'ENABLE_BLUE'}{$settings{'ENABLE_BLUE'}} = "checked='checked'";
 270
 271 $checked{'UNLIMITED'}{'off'} = '';
 272 $checked{'UNLIMITED'}{'on'} = '';
 273 $checked{'UNLIMITED'}{$settings{'UNLIMITED'}} = "checked='checked'";
 274
 275 $selected{'AUTH'} = ();
 276 $selected{'AUTH'}{'COUPON'} = "";
 277 $selected{'AUTH'}{'TERMS'} = "";
 278 $selected{'AUTH'}{$settings{'AUTH'}} = "selected";
 279
 280 if ($netsettings{'GREEN_DEV'}){
 281         print <<END;
 282                 <tr>
 283                         <td width='30%'>
 284                                 $Lang::tr{'Captive active on'}
 285                                 <font color='$Header::colourgreen'>$Lang::tr{'green'}</font>
 286                         </td>
 287                         <td>
 288                                 <input type='checkbox' name='ENABLE_GREEN' $checked{'ENABLE_GREEN'}{'on'} />
 289                         </td>
 290                 </tr>
 291 END
 292 }
 293
 294 if ($netsettings{'BLUE_DEV'}){
 295         print <<END;
 296                 <tr>
 297                         <td width='30%'>
 298                                 $Lang::tr{'Captive active on'}
 299                                 <font color='$Header::colourblue'>$Lang::tr{'blue'}</font>
 300                         </td>
 301                         <td>
 302                                 <input type='checkbox' name='ENABLE_BLUE' $checked{'ENABLE_BLUE'}{'on'} />
 303                         </td>
 304                 </tr>
 305 END
 306 }
 307
 308 print<<END
 309         <tr>
 310                 <td>
 311                         $Lang::tr{'Captive authentication'}
 312                 </td>
 313                 <td>
 314                         <select name='AUTH'>
 315                                 <option value="TERMS"  $selected{'AUTH'}{'TERMS'} >$Lang::tr{'Captive terms'}</option>
 316                                 <option value="COUPON" $selected{'AUTH'}{'COUPON'}>$Lang::tr{'Captive coupon'}</option>
 317                         </select>
 318                 </td>
 319         </tr>
 320 END
 321 ;
 322
 323 if ($settings{'AUTH'} eq 'TERMS') {
 324         $selected{'SESSION_TIME'} = ();
 325         foreach my $session_time (keys %session_times) {
 326                 $selected{'SESSION_TIME'}{$session_time} = "";
 327         }
 328         $selected{'SESSION_TIME'}{$settings{'SESSION_TIME'}} = "selected";
 329
 330         print <<END;
 331                 <tr>
 332                         <td>$Lang::tr{'Captive client session expiry time'}</td>
 333                         <td>
 334                                 <select name="SESSION_TIME">
 335 END
 336
 337         foreach my $session_time (sort { $a <=> $b } keys %session_times) {
 338                 print <<END;
 339                                         <option value="$session_time" $selected{'SESSION_TIME'}{$session_time}>
 340                                                 $session_times{$session_time}
 341                                         </option>
 342 END
 343         }
 344
 345         print <<END;
 346                                 </select>
 347                         </td>
 348                 </tr>
 349 END
 350 }
 351
 352 print<<END;
 353         <tr>
 354                 <td colspan="2">
 355                         <br>
 356                         <strong>$Lang::tr{'Captive branding'}</strong>
 357                 </td>
 358         </tr>
 359         <tr>
 360                 <td>
 361                         $Lang::tr{'Captive title'}
 362                 </td>
 363                 <td>
 364                         <input type='text' name='TITLE' value="$settings{'TITLE'}" size='40'>
 365                 </td>
 366         </tr>
 367         <tr>
 368                 <td>$Lang::tr{'Captive brand color'}</td>
 369                 <td>
 370                         <input type="color" name="COLOR" value="$settings{'COLOR'}">
 371                 </td>
 372         </tr>
 373         <tr>
 374                 <td>
 375                         $Lang::tr{'Captive upload logo'}
 376                 </td>
 377                 <td>
 378                         <input type="file" name="logo">
 379                         <br>$Lang::tr{'Captive upload logo recommendations'}
 380                 </td>
 381         </tr>
 382 END
 383
 384 if (-e $logo) {
 385         print <<END;
 386                 <tr>
 387                         <td>$Lang::tr{'Captive logo uploaded'}</td>
 388                         <td>
 389                                 $Lang::tr{'yes'}&nbsp;
 390                                 <input type='submit' name='ACTION' value="$Lang::tr{'Captive delete logo'}"/>
 391                         </td>
 392                 </tr>
 393 END
 394 }
 395
 396 my $terms = &getterms();
 397 print <<END;
 398         <tr>
 399                 <td>$Lang::tr{'Captive terms'}</td>
 400                 <td>
 401                         <textarea cols="50" rows="10" name="TERMS">$terms</textarea>
 402                 </td>
 403         </tr>
 404         <tr>
 405                 <td></td>
 406                 <td align='right'>
 407                         <input type='submit' name='ACTION' value="$Lang::tr{'save'}"/>
 408                 </td>
 409         </tr>
 410         </table></form>
 411 END
 412
 413 &Header::closebox();
 414
 415 #if settings is set to use coupons, the coupon part has to be displayed
 416 if ($settings{'AUTH'} eq 'COUPON') {
 417         &coupons();
 418 }
 419
 420 # Show active clients
 421 &show_clients();
 422
 423 sub getterms() {
 424         my @ret;
 425
 426         open(FILE, "<:utf8", "/var/ipfire/captive/terms.txt");
 427         while(<FILE>) {
 428                 push(@ret, HTML::Entities::decode_entities($_));
 429         }
 430         close(FILE);
 431
 432         return join(/\n/, @ret);
 433 }
 434
 435 sub gencode(){
 436         #generate a random code only letters from A-Z except 'O'  and 0-9
 437         my @chars = ("A".."N", "P".."Z", "0".."9");
 438         my $randomstring;
 439         $randomstring .= $chars[rand @chars] for 1..8;
 440         return $randomstring;
 441 }
 442
 443 sub coupons() {
 444         &Header::openbox('100%', 'left', $Lang::tr{'Captive generate coupons'});
 445
 446         $selected{'SESSION_TIME'} = ();
 447         foreach my $session_time (keys %session_times) {
 448                 $selected{'SESSION_TIME'}{$session_time} = "";
 449         }
 450         $selected{'SESSION_TIME'}{$settings{'SESSION_TIME'}} = "selected";
 451
 452         print <<END;
 453                 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 454                         <table border='0' width='100%'>
 455                                 <tr>
 456                                         <td width='30%'>
 457                                                 $Lang::tr{'Captive vouchervalid'}
 458                                         </td>
 459                                         <td width='70%'>
 460                                                 <select name="SESSION_TIME">
 461 END
 462
 463         foreach my $session_time (sort { $a <=> $b } keys %session_times) {
 464                 print <<END;
 465                                                         <option value="$session_time" $selected{'SESSION_TIME'}{$session_time}>
 466                                                                 $session_times{$session_time}
 467                                                         </option>
 468 END
 469         }
 470
 471         print <<END;
 472                                                 </select>
 473                                         </td>
 474                                 </tr>
 475                                 <tr>
 476                                         <td>$Lang::tr{'remark'}</td>
 477                                         <td>
 478                                                 <input type='text' name='REMARK' size=40>
 479                                         </td>
 480                                 </tr>
 481                                 <tr>
 482                                         <td>$Lang::tr{'Captive generated coupon no'}</td>
 483                                         <td>
 484                                                 <select name="COUNT">
 485                                                         <option value="1">1</option>
 486                                                         <option value="2">2</option>
 487                                                         <option value="3">3</option>
 488                                                         <option value="4">4</option>
 489                                                         <option value="5">5</option>
 490                                                         <option value="6">6</option>
 491                                                         <option value="7">7</option>
 492                                                         <option value="8">8</option>
 493                                                         <option value="9">9</option>
 494                                                         <option value="10">10</option>
 495                                                         <option value="20">20</option>
 496                                                         <option value="50">50</option>
 497                                                         <option value="100">100</option>
 498                                                 </select>
 499                                         </td>
 500                                 </tr>
 501                         </table>
 502
 503                         <div align="right">
 504                                 <input type="submit" name="ACTION" value="$Lang::tr{'Captive generate coupons'}">
 505                         </div>
 506                 </form>
 507 END
 508
 509         &Header::closebox();
 510
 511         # Show all coupons if exist
 512         if (! -z $coupons) {
 513                 &show_coupons();
 514         }
 515 }
 516
 517 sub show_coupons() {
 518         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 519
 520         #if there are already generated but unsused coupons, print a table
 521         &Header::openbox('100%', 'left', $Lang::tr{'Captive issued coupons'});
 522
 523         print <<END;
 524                 <table class='tbl' border='0'>
 525                         <tr>
 526                                 <th align='center' width='15%'>
 527                                         $Lang::tr{'Captive coupon'}
 528                                 </th>
 529                                 <th align='center' width='15%'>$Lang::tr{'Captive expiry time'}</th>
 530                                 <th align='center' width='65%'>$Lang::tr{'remark'}</th>
 531                                 <th align='center' width='5%'>$Lang::tr{'delete'}</th>
 532                         </tr>
 533 END
 534
 535         foreach my $key (keys %couponhash) {
 536                 my $expirytime = $Lang::tr{'Captive nolimit'};
 537                 if ($couponhash{$key}[2] > 0) {
 538                         $expirytime = &General::format_time($couponhash{$key}[2]);
 539                 }
 540
 541                 if ($count++ % 2) {
 542                         $col="bgcolor='$color{'color20'}'";
 543                 } else {
 544                         $col="bgcolor='$color{'color22'}'";
 545                 }
 546
 547                 print <<END;
 548                         <tr>
 549                                 <td $col align="center">
 550                                         <b>$couponhash{$key}[1]</b>
 551                                 </td>
 552                                 <td $col align="center">
 553                                         $expirytime
 554                                 </td>
 555                                 <td $col align="center">
 556                                         $couponhash{$key}[3]
 557                                 </td>
 558                                 <td $col align="center">
 559                                         <form method='post'>
 560                                                 <input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' />
 561                                                 <input type='hidden' name='ACTION' value='delete-coupon' />
 562                                                 <input type='hidden' name='key' value='$couponhash{$key}[0]' />
 563                                         </form>
 564                                 </td>
 565                         </tr>
 566 END
 567         }
 568
 569         print "</table>";
 570
 571         # Download PDF
 572         print <<END;
 573                 <div align="right">
 574                         <form method="POST">
 575                                 <input type="hidden" name="ACTION" value="export-coupons">
 576                                 <input type="submit" value="$Lang::tr{'Captive export coupons'}">
 577                         </form>
 578                 </div>
 579 END
 580
 581         &Header::closebox();
 582 }
 583
 584 sub show_clients() {
 585         # if there are active clients which use coupons show table
 586         return if ( -z $clients || ! -f $clients );
 587
 588         my $count=0;
 589         my $col;
 590
 591         &Header::openbox('100%', 'left', $Lang::tr{'Captive clients'});
 592
 593         print <<END;
 594                 <table class='tbl' width='100%'>
 595                         <tr>
 596                                 <th align='center' width='15%'>$Lang::tr{'Captive coupon'}</th>
 597                                 <th align='center' width='15%'>$Lang::tr{'Captive activated'}</th>
 598                                 <th align='center' width='15%'>$Lang::tr{'Captive expiry time'}</th>
 599                                 <th align='center' width='10%'>$Lang::tr{'Captive mac'}</th>
 600                                 <th align='center' width='43%'>$Lang::tr{'remark'}</th>
 601                                 <th align='center' width='5%'>$Lang::tr{'delete'}</th>
 602                         </tr>
 603 END
 604
 605         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 606         foreach my $key (keys %clientshash) {
 607                 #calculate time from clientshash (starttime)
 608                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 609
 610                 #calculate endtime from clientshash
 611                 my $endtime;
 612                 if ($clientshash{$key}[3] eq '0'){
 613                         $endtime=$Lang::tr{'Captive nolimit'};
 614                 } else {
 615                         $endtime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 616                 }
 617
 618                 if ($count++ % 2) {
 619                         $col="bgcolor='$color{'color20'}'";
 620                 } else {
 621                         $col="bgcolor='$color{'color22'}'";
 622                 }
 623
 624                 my $coupon = ($clientshash{$key}[4] eq "LICENSE") ? $Lang::tr{'Captive terms short'} : $clientshash{$key}[4];
 625
 626                 print <<END;
 627                         <tr>
 628                                 <td $col align="center"><b>$coupon</b></td>
 629                                 <td $col align="center">$starttime</td>
 630                                 <td $col align="center">$endtime</td>
 631                                 <td $col align="center">$clientshash{$key}[0]</td>
 632                                 <td $col align="center">$clientshash{$key}[5]</td>
 633                                 <td $col align="center">
 634                                         <form method='post'>
 635                                                 <input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' />
 636                                                 <input type='hidden' name='ACTION' value='delete-client' />
 637                                                 <input type='hidden' name='key' value='$clientshash{$key}[0]' />
 638                                         </form>
 639                                 </td>
 640                         </tr>
 641 END
 642         }
 643
 644         print "</table>";
 645
 646         &Header::closebox();
 647 }
 648
 649 sub validremark
 650 {
 651         # Checks a hostname against RFC1035
 652         my $remark = $_[0];
 653         # Each part should be at least two characters in length
 654         # but no more than 63 characters
 655         if (length ($remark) < 1 || length ($remark) > 255) {
 656                 return 0;}
 657         # Only valid characters are a-z, A-Z, 0-9 and -
 658         if ($remark !~ /^[a-zäöüA-ZÖÄÜ0-9-.:;\|_()\/\s]*$/) {
 659                 return 0;}
 660         # First character can only be a letter or a digit
 661         if (substr ($remark, 0, 1) !~ /^[a-zäöüA-ZÖÄÜ0-9]*$/) {
 662                 return 0;}
 663         # Last character can only be a letter or a digit
 664         if (substr ($remark, -1, 1) !~ /^[a-zöäüA-ZÖÄÜ0-9.:;_)]*$/) {
 665                 return 0;}
 666         return 1;
 667 }
 668
 669 sub generate_pdf() {
 670         my $pdf = PDF::API2->new();
 671
 672         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = gmtime(time);
 673         my $timestamp = sprintf("D:%04d%02d%02d%02d%02d%02d+00;00", $year+1900, $mon+1, $mday, $hour, $min, $sec);
 674
 675         $pdf->info(
 676                 "Creator"      => $Lang::tr{'Captive portal'},
 677                 "Title"        => $Lang::tr{'Captive portal coupons'},
 678                 "CreationDate" => $timestamp,
 679                 "ModDate"      => $timestamp,
 680         );
 681
 682         # Set page size
 683         $pdf->mediabox("A4");
 684         $pdf->trimbox(28/mm, 27/mm, 182/mm, 270/mm);
 685
 686         # Set font
 687         my $font = $pdf->ttfont("/usr/share/fonts/Ubuntu-R.ttf");
 688
 689         my $page_h_margin = 27/mm;
 690         my $page_v_margin = 28/mm;
 691
 692         my $height = 68/mm;
 693         my $width  = 91/mm;
 694         my $margin =  2/mm;
 695
 696         # Tux Image
 697         my $tux_image = $pdf->image_png("/srv/web/ipfire/html/captive/assets/ipfire.png");
 698         my $logo_height = 12/mm;
 699         my $logo_width  = 12/mm;
 700
 701         my @coupons = ();
 702         my %coupon_expiry_times = ();
 703
 704         # Read coupons
 705         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 706         foreach my $key (keys %couponhash) {
 707                 $coupon_expiry_times{$couponhash{$key}[1]} = $couponhash{$key}[2];
 708                 push @coupons, $couponhash{$key}[1];
 709         }
 710
 711         while (@coupons) {
 712                 # Make a new page
 713                 my $page = $pdf->page();
 714
 715                 # Graphics
 716                 $gfx = $page->gfx();
 717
 718                 # Headline font
 719                 my $f_headline = $page->text();
 720                 $f_headline->font($font, 20);
 721
 722                 # Subheadline font
 723                 my $f_subheadline = $page->text();
 724                 $f_subheadline->font($font, 14);
 725
 726                 # Coupon font
 727                 my $f_coupon = $page->text();
 728                 $f_coupon->font($font, 36);
 729
 730                 # Lifetime
 731                 my $f_lifetime = $page->text();
 732                 $f_lifetime->font($font, 14);
 733
 734                 # Watermark font
 735                 my $f_watermark = $page->text();
 736                 $f_watermark->fillcolor("#666666");
 737                 $f_watermark->font($font, 10);
 738
 739                 my $i = 0;
 740                 while (@coupons && $i < 8) {
 741                         my $coupon = shift @coupons;
 742
 743                         # Box corners
 744                         my $x = ($page_v_margin / 2) + (($i % 2) ? $width : 0);
 745                         my $y = ($page_h_margin / 2) + (int($i / 2) * $height);
 746
 747                         # Weidth and height of the box
 748                         my $w = $width - $margin;
 749                         my $h = $height - $margin;
 750
 751                         # Center
 752                         my $cx = $x + ($w / 2);
 753                         my $cy = $y + ($h / 2);
 754
 755                         # Draw border box
 756                         $gfx->strokecolor("#333333");
 757                         $gfx->linedash(1/mm, 1/mm);
 758                         $gfx->rect($x, $y, $w, $h);
 759                         $gfx->stroke();
 760                         $gfx->endpath();
 761
 762                         # Headline
 763                         $f_headline->translate($cx, ($y + $h - $cy) / 1.7 + $cy);
 764                         $f_subheadline->translate($cx, ($y + $h - $cy) / 2.4 + $cy);
 765
 766                         if ($settings{'TITLE'}) {
 767                                 $f_headline->text_center(decode("utf8", $settings{'TITLE'}));
 768                                 $f_subheadline->text_center(decode("utf8", $Lang::tr{'Captive WiFi coupon'}));
 769                         } else {
 770                                 $f_headline->text_center(decode("utf8", $Lang::tr{'Captive WiFi coupon'}));
 771                         }
 772
 773                         # Coupon
 774                         $f_coupon->translate($cx, $cy);
 775                         $f_coupon->text_center(decode("utf8", $coupon));
 776
 777                         # Show lifetime
 778                         my $expiry_time = $coupon_expiry_times{$coupon};
 779                         $f_lifetime->translate($cx, $cy - ($y + $h - $cy) / 4);
 780                         if ($expiry_time > 0) {
 781                                 my $lifetime = &General::format_time($expiry_time);
 782                                 $f_lifetime->text_center(decode("utf8", $Lang::tr{'Captive valid for'} . " " . $lifetime));
 783                         } else {
 784                                 $f_lifetime->text_center(decode("utf8", $Lang::tr{'Captive nolimit'}));
 785                         }
 786
 787                         # Add watermark
 788                         $gfx->image($tux_image, $x + $w - $logo_width - $margin, $y + $margin, $logo_width, $logo_height);
 789                         $f_watermark->translate($x + $w - ($margin * 2) - $logo_width, $y + ($logo_height / 2));
 790                         $f_watermark->text_right("Powered by IPFire");
 791
 792                         $i++;
 793                 }
 794         }
 795
 796         # Write out the PDF document
 797         return $pdf->stringify();
 798 }
 799
 800 &Header::closebigbox();
 801 &Header::closepage();