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 %selected = ();
  38
  39 my $coupons = "${General::swroot}/captive/coupons";
  40 my %couponhash = ();
  41
  42 my $logo = "${General::swroot}/captive/logo.dat";
  43
  44 my %settings=();
  45 my %mainsettings;
  46 my %color;
  47 my %cgiparams=();
  48 my %netsettings=();
  49 my %checked=();
  50 my $errormessage='';
  51 my $clients="${General::swroot}/captive/clients";
  52 my %clientshash=();
  53 my $settingsfile="${General::swroot}/captive/settings";
  54 unless (-e $settingsfile)       { system("touch $settingsfile"); }
  55
  56 &Header::getcgihash(\%cgiparams);
  57
  58 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  59 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  60 &General::readhash("$settingsfile", \%settings) if(-f $settingsfile);
  61 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  62
  63 if ($cgiparams{'ACTION'} eq "export-coupons") {
  64         my $pdf = &generate_pdf();
  65
  66         print "Content-Type: application/pdf\n";
  67         print "Content-Disposition: attachment; filename=captive-portal-coupons.pdf\n";
  68         print "\n"; # end headers
  69
  70         # Send PDF
  71         print $pdf;
  72
  73         exit(0);
  74 }
  75
  76
  77 &Header::showhttpheaders();
  78
  79 if ($cgiparams{'ACTION'} eq $Lang::tr{'save'}) {
  80         my $file = $cgiparams{'logo'};
  81         if ($file) {
  82                 # Check if the file extension is PNG/JPEG
  83                 chomp $file;
  84
  85                 my ($name, $path, $ext) = fileparse($file, qr/\.[^.]*$/);
  86                 if ($ext ne ".png" && $ext ne ".jpg" && $ext ne ".jpeg") {
  87                         $errormessage = $Lang::tr{'Captive wrong ext'};
  88                 }
  89         }
  90
  91         $settings{'ENABLE_GREEN'}               = $cgiparams{'ENABLE_GREEN'};
  92         $settings{'ENABLE_BLUE'}                = $cgiparams{'ENABLE_BLUE'};
  93         $settings{'AUTH'}                               = $cgiparams{'AUTH'};
  94         $settings{'TITLE'}                              = $cgiparams{'TITLE'};
  95         $settings{'COLOR'}                      = $cgiparams{'COLOR'};
  96         $settings{'SESSION_TIME'}               = $cgiparams{'SESSION_TIME'};
  97
  98         if (!$errormessage){
  99                 #Check if we need to upload a new logo
 100                 if ($file) {
 101                         # Save logo
 102                         my ($filehandle) = CGI::upload("logo");
 103
 104                         # XXX check filesize
 105
 106                         open(FILE, ">$logo");
 107                         binmode $filehandle;
 108                         while (<$filehandle>) {
 109                                 print FILE;
 110                         }
 111                         close(FILE);
 112                 }
 113
 114                 &General::writehash("$settingsfile", \%settings);
 115
 116                 # Save terms
 117                 $cgiparams{'TERMS'} = &Header::escape($cgiparams{'TERMS'});
 118                 open(FH, ">:utf8", "/var/ipfire/captive/terms.txt") or die("$!");
 119                 print FH $cgiparams{'TERMS'};
 120                 close(FH);
 121                 $cgiparams{'TERMS'} = "";
 122
 123                 #execute binary to reload firewall rules
 124                 system("/usr/local/bin/captivectrl");
 125
 126                 if ($cgiparams{'ENABLE_BLUE'} eq 'on'){
 127                                 system("/usr/local/bin/wirelessctrl");
 128                 }
 129         }
 130 }
 131
 132 if ($cgiparams{'ACTION'} eq "$Lang::tr{'Captive generate coupon'}") {
 133         # Check expiry time
 134         if ($cgiparams{'EXP_HOUR'} + $cgiparams{'EXP_DAY'} + $cgiparams{'EXP_WEEK'} + $cgiparams{'EXP_MONTH'} == 0 && $cgiparams{'UNLIMITED'} == '') {
 135                 $errormessage = $Lang::tr{'Captive noexpiretime'};
 136         }
 137
 138         #check valid remark
 139         if ($cgiparams{'REMARK'} ne '' && !&validremark($cgiparams{'REMARK'})){
 140                 $errormessage=$Lang::tr{'fwhost err remark'};
 141         }
 142
 143         if (!$errormessage) {
 144                 # Remember selected values
 145                 foreach my $val (("UNLIMITED", "EXP_HOUR", "EXP_DAY", "EXP_WEEK", "EXP_MONTH")) {
 146                         $settings{$val} = $cgiparams{$val};
 147                 }
 148                 &General::writehash($settingsfile, \%settings);
 149
 150                 &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 151                 my $now = time();
 152
 153                 # Calculate expiry time in seconds
 154                 my $expires = 0;
 155
 156                 if ($settings{'UNLIMITED'} ne 'on') {
 157                         $expires += $settings{'EXP_HOUR'};
 158                         $expires += $settings{'EXP_DAY'};
 159                         $expires += $settings{'EXP_WEEK'};
 160                         $expires += $settings{'EXP_MONTH'};
 161                 }
 162
 163                 my $count = $cgiparams{'COUNT'} || 1;
 164                 while($count-- > 0) {
 165                         # Generate a new code
 166                         my $code = &gencode();
 167
 168                         # Check if the coupon code already exists
 169                         foreach my $key (keys %couponhash) {
 170                                 if($couponhash{$key}[1] eq $code) {
 171                                         # Code already exists, so try again
 172                                         $code = "";
 173                                         $count++;
 174                                         last;
 175                                 }
 176                         }
 177
 178                         next if ($code eq "");
 179
 180                         # Get a new key from hash
 181                         my $key = &General::findhasharraykey(\%couponhash);
 182
 183                         # Initialize all fields
 184                         foreach my $i (0 .. 3) { $couponhash{$key}[$i] = ""; }
 185
 186                         $couponhash{$key}[0] = $now;
 187                         $couponhash{$key}[1] = $code;
 188                         $couponhash{$key}[2] = $expires;
 189                         $couponhash{$key}[3] = $cgiparams{'REMARK'};
 190                 }
 191
 192                 # Save everything to disk
 193                 &General::writehasharray($coupons, \%couponhash);
 194         }
 195 }
 196
 197 if ($cgiparams{'ACTION'} eq 'delete-coupon') {
 198         #deletes an already generated but unused voucher
 199
 200         #read all generated vouchers
 201         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 202         foreach my $key (keys %couponhash) {
 203                 if($cgiparams{'key'} eq $couponhash{$key}[0]){
 204                         #write logenty with decoded remark
 205                         my $rem=HTML::Entities::decode_entities($couponhash{$key}[4]);
 206                         &General::log("Captive", "Delete unused coupon $couponhash{$key}[1] $couponhash{$key}[2] hours valid expires on $couponhash{$key}[3] remark $rem");
 207                         #delete line from hash
 208                         delete $couponhash{$key};
 209                         last;
 210                 }
 211         }
 212         #write back hash
 213         &General::writehasharray($coupons, \%couponhash);
 214 }
 215
 216 if ($cgiparams{'ACTION'} eq 'delete-client') {
 217         #delete voucher and connection in use
 218
 219         #read all active clients
 220         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 221         foreach my $key (keys %clientshash) {
 222                 if($cgiparams{'key'} eq $clientshash{$key}[0]){
 223                         #prepare log entry with decoded remark
 224                         my $rem=HTML::Entities::decode_entities($clientshash{$key}[7]);
 225                         #write logentry
 226                         &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");
 227                         #delete line from hash
 228                         delete $clientshash{$key};
 229                         last;
 230                 }
 231         }
 232         #write back hash
 233         &General::writehasharray("$clients", \%clientshash);
 234         #reload firewallrules to kill connection of client
 235         system("/usr/local/bin/captivectrl");
 236 }
 237
 238 #open webpage, print header and open box
 239 &Header::openpage($Lang::tr{'Captive menu'}, 1, '');
 240 &Header::openbigbox();
 241
 242 # If an error message exists, show a box with the error message
 243 if ($errormessage) {
 244         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 245         print $errormessage;
 246         &Header::closebox();
 247 }
 248
 249 # Prints the config box on the website
 250 &Header::openbox('100%', 'left', $Lang::tr{'Captive config'});
 251 print <<END
 252         <form method='post' action='$ENV{'SCRIPT_NAME'}' enctype="multipart/form-data">\n
 253                 <table width='100%' border="0">
 254                 <tr>
 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 ($netsettings{'GREEN_DEV'}){
 277         print "<td width='30%'>$Lang::tr{'Captive active on'} <font color='$Header::colourgreen'>$Lang::tr{'green'}</font></td><td><input type='checkbox' name='ENABLE_GREEN' $checked{'ENABLE_GREEN'}{'on'} /></td></tr>";
 278 }
 279 if ($netsettings{'BLUE_DEV'}){
 280         print "<td width='30%'>$Lang::tr{'Captive active on'} <font color='$Header::colourblue'>$Lang::tr{'blue'}</font></td><td><input type='checkbox' name='ENABLE_BLUE' $checked{'ENABLE_BLUE'}{'on'} /></td></tr>";
 281 }
 282
 283 print<<END
 284         </tr>
 285         <tr>
 286                 <td>
 287                         $Lang::tr{'Captive authentication'}
 288                 </td>
 289                 <td>
 290                         <select name='AUTH'>
 291                                 <option value="TERMS"  $selected{'AUTH'}{'TERMS'} >$Lang::tr{'Captive terms'}</option>
 292                                 <option value="COUPON" $selected{'AUTH'}{'COUPON'}>$Lang::tr{'Captive coupon'}</option>
 293                         </select>
 294                 </td>
 295         </tr>
 296 END
 297 ;
 298
 299 if ($settings{'AUTH'} eq 'TERMS') {
 300         $selected{'SESSION_TIME'} = ();
 301         $selected{'SESSION_TIME'}{'0'} = "";
 302         $selected{'SESSION_TIME'}{'3600'} = "";
 303         $selected{'SESSION_TIME'}{'28800'} = "";
 304         $selected{'SESSION_TIME'}{'86400'} = "";
 305         $selected{'SESSION_TIME'}{'604800'} = "";
 306         $selected{'SESSION_TIME'}{'18144000'} = "";
 307         $selected{'SESSION_TIME'}{$settings{'SESSION_TIME'}} = "selected";
 308
 309         print <<END;
 310                 <tr>
 311                         <td>$Lang::tr{'Captive client session expiry time'}</td>
 312                         <td>
 313                                 <select name="SESSION_TIME">
 314                                         <option value="0"        $selected{'SESSION_TIME'}{'0'}>- $Lang::tr{'unlimited'} -</option>
 315                                         <option value="3600"     $selected{'SESSION_TIME'}{'3600'}>$Lang::tr{'one hour'}</option>
 316                                         <option value="28800"    $selected{'SESSION_TIME'}{'28800'}>$Lang::tr{'eight hours'}</option>
 317                                         <option value="86400"    $selected{'SESSION_TIME'}{'86400'}>$Lang::tr{'24 hours'}</option>
 318                                         <option value="604800"   $selected{'SESSION_TIME'}{'604800'}>$Lang::tr{'one week'}</option>
 319                                         <option value="18144000" $selected{'SESSION_TIME'}{'18144000'}>$Lang::tr{'one month'}</option>
 320                                 </select>
 321                         </td>
 322                 </tr>
 323 END
 324 }
 325
 326 print<<END;
 327         <tr>
 328                 <td colspan="2">
 329                         <br>
 330                         <strong>$Lang::tr{'Captive branding'}</strong>
 331                 </td>
 332         </tr>
 333         <tr>
 334                 <td>
 335                         $Lang::tr{'Captive title'}
 336                 </td>
 337                 <td>
 338                         <input type='text' name='TITLE' value="$settings{'TITLE'}" size='40'>
 339                 </td>
 340         </tr>
 341         <tr>
 342                 <td>$Lang::tr{'Captive brand color'}</td>
 343                 <td>
 344                         <input type="color" name="COLOR" value="$settings{'COLOR'}">
 345                 </td>
 346         </tr>
 347         <tr>
 348                 <td>
 349                         $Lang::tr{'Captive upload logo'}
 350                 </td>
 351                 <td>
 352                         <input type="file" name="logo">
 353                         <br>$Lang::tr{'Captive upload logo recommendations'}
 354                 </td>
 355         </tr>
 356 END
 357
 358 if (-e $logo) {
 359         print <<END;
 360                 <tr>
 361                         <td>$Lang::tr{'Captive logo uploaded'}</td>
 362                         <td>$Lang::tr{'yes'}</td>
 363                 </tr>
 364 END
 365 }
 366
 367 my $terms = &getterms();
 368 print <<END;
 369         <tr>
 370                 <td>$Lang::tr{'Captive terms'}</td>
 371                 <td>
 372                         <textarea cols="50" rows="10" name="TERMS">$terms</textarea>
 373                 </td>
 374         </tr>
 375         <tr>
 376                 <td></td>
 377                 <td align='right'>
 378                         <input type='submit' name='ACTION' value="$Lang::tr{'save'}"/>
 379                 </td>
 380         </tr>
 381         </table></form>
 382 END
 383
 384 &Header::closebox();
 385
 386 #if settings is set to use coupons, the coupon part has to be displayed
 387 if ($settings{'AUTH'} eq 'COUPON') {
 388         &coupons();
 389 }
 390
 391 # Show active clients
 392 &show_clients();
 393
 394 sub getterms() {
 395         my @ret;
 396
 397         open(FILE, "<:utf8", "/var/ipfire/captive/terms.txt");
 398         while(<FILE>) {
 399                 push(@ret, HTML::Entities::decode_entities($_));
 400         }
 401         close(FILE);
 402
 403         return join(/\n/, @ret);
 404 }
 405
 406 sub gencode(){
 407         #generate a random code only letters from A-Z except 'O'  and 0-9
 408         my @chars = ("A".."N", "P".."Z", "0".."9");
 409         my $randomstring;
 410         $randomstring .= $chars[rand @chars] for 1..8;
 411         return $randomstring;
 412 }
 413
 414 sub coupons() {
 415         &Header::openbox('100%', 'left', $Lang::tr{'Captive generate coupon'});
 416         print <<END;
 417                 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 418                         <table border='0' width='100%'>
 419                                 <tr>
 420                                         <td width='30%'>
 421                                                 $Lang::tr{'Captive vouchervalid'}
 422                                         </td>
 423                                         <td width='70%'>
 424                                                 <table class='tbl' border='0' width='100%'>
 425                                                         <tr>
 426                                                                 <th>$Lang::tr{'hours'}</th>
 427                                                                 <th>$Lang::tr{'days'}</th>
 428                                                                 <th>$Lang::tr{'weeks'}</th>
 429                                                                 <th>$Lang::tr{'months'}</th>
 430                                                                 <th></th>
 431                                                         </tr>
 432 END
 433
 434                 #print hour-dropdownbox
 435                 my $hrs=3600;
 436                 print "<tr height='40px'><td><select name='EXP_HOUR' style='width:8em;'>";
 437                 print "<option value='0' ";
 438                 print " selected='selected'" if ($settings{'EXP_HOUR'} eq '0');
 439                 print ">--</option>";
 440                 for (my $i = 1; $i<25; $i++){
 441                         my $exp_sec = $i * $hrs;
 442                         print "<option value='$exp_sec' ";
 443                         print " selected='selected'" if ($settings{'EXP_HOUR'} eq $exp_sec);
 444                         print ">$i</option>";
 445                 }
 446                 print "</td><td>";
 447
 448                 #print day-dropdownbox
 449                 my $days=3600*24;
 450                 print "<select name='EXP_DAY' style='width:8em;'>";
 451                 print "<option value='0' ";
 452                 print " selected='selected'" if ($settings{'EXP_DAY'} eq '0');
 453                 print ">--</option>";
 454                 for (my $i = 1; $i<8; $i++){
 455                         my $exp_sec = $i * $days;
 456                         print "<option value='$exp_sec' ";
 457                         print " selected='selected'" if ($settings{'EXP_DAY'} eq $exp_sec);
 458                         print ">$i</option>";
 459                 }
 460                 print "</td><td>";
 461
 462                 #print week-dropdownbox
 463                 my $week=3600*24*7;
 464                 print "<select name='EXP_WEEK' style='width:8em;'>";
 465                 print "<option value='0' ";
 466                 print " selected='selected'" if ($settings{'EXP_WEEK'} eq '0');
 467                 print ">--</option>";
 468                 for (my $i = 1; $i<5; $i++){
 469                         my $exp_sec = $i * $week;
 470                         print "<option value='$exp_sec' ";
 471                         print " selected='selected'" if ($settings{'EXP_WEEK'} eq $exp_sec);
 472                         print ">$i</option>";
 473                 }
 474                 print "</td><td>";
 475
 476                 #print month-dropdownbox
 477                 my $month=3600*24*30;
 478                 print "<select name='EXP_MONTH' style='width:8em;'>";
 479                 print "<option value='0' ";
 480                 print " selected='selected'" if ($settings{'EXP_MONTH'} eq '0');
 481                 print ">--</option>";
 482                 for (my $i = 1; $i<13; $i++){
 483                         my $exp_sec = $i * $month;
 484                         print "<option value='$exp_sec' ";
 485                         print " selected='selected'" if ($settings{'EXP_MONTH'} eq $exp_sec);
 486                         print ">$i</option>";
 487                 }
 488                 print <<END;
 489                                                                 </td>
 490                                                                 <td>
 491                                                                         <label>
 492                                                                                 <input type='checkbox' name='UNLIMITED' $checked{'UNLIMITED'}{'on'} />
 493                                                                                 $Lang::tr{'Captive nolimit'}
 494                                                                         </label>
 495                                                                 </td>
 496                                                         </tr>
 497                                                 </table>
 498                                         </td>
 499                                 </tr>
 500                                 <tr>
 501                                         <td>$Lang::tr{'remark'}</td>
 502                                         <td>
 503                                                 <input type='text' style='width: 98%;' name='REMARK' align='left'>
 504                                         </td>
 505                                 </tr>
 506                         </table>
 507
 508                         <div align="right">
 509                                 <select name="COUNT">
 510                                         <option value="1">1</option>
 511                                         <option value="2">2</option>
 512                                         <option value="3">3</option>
 513                                         <option value="4">4</option>
 514                                         <option value="5">5</option>
 515                                         <option value="6">6</option>
 516                                         <option value="7">7</option>
 517                                         <option value="8">8</option>
 518                                         <option value="9">9</option>
 519                                         <option value="10">10</option>
 520                                         <option value="20">20</option>
 521                                         <option value="50">50</option>
 522                                         <option value="100">100</option>
 523                                 </select>
 524
 525                                 <input type="submit" name="ACTION" value="$Lang::tr{'Captive generate coupon'}">
 526                         </div>
 527                 </form>
 528 END
 529
 530         &Header::closebox();
 531
 532         # Show all coupons if exist
 533         if (! -z $coupons) {
 534                 &show_coupons();
 535         }
 536 }
 537
 538 sub show_coupons() {
 539         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 540
 541         #if there are already generated but unsused coupons, print a table
 542         &Header::openbox('100%', 'left', $Lang::tr{'Captive issued coupons'});
 543
 544         print <<END;
 545                 <table class='tbl' border='0'>
 546                         <tr>
 547                                 <th align='center' width='15%'>
 548                                         $Lang::tr{'Captive coupon'}
 549                                 </th>
 550                                 <th align='center' width='15%'>$Lang::tr{'Captive expiry time'}</th>
 551                                 <th align='center' width='65%'>$Lang::tr{'remark'}</th>
 552                                 <th align='center' width='5%'>$Lang::tr{'delete'}</th>
 553                         </tr>
 554 END
 555
 556         foreach my $key (keys %couponhash) {
 557                 my $expirytime = $Lang::tr{'Captive nolimit'};
 558                 if ($couponhash{$key}[2] > 0) {
 559                         $expirytime = &General::format_time($couponhash{$key}[2]);
 560                 }
 561
 562                 if ($count++ % 2) {
 563                         $col="bgcolor='$color{'color20'}'";
 564                 } else {
 565                         $col="bgcolor='$color{'color22'}'";
 566                 }
 567
 568                 print <<END;
 569                         <tr>
 570                                 <td $col align="center">
 571                                         <b>$couponhash{$key}[1]</b>
 572                                 </td>
 573                                 <td $col align="center">
 574                                         $expirytime
 575                                 </td>
 576                                 <td $col align="center">
 577                                         $couponhash{$key}[3]
 578                                 </td>
 579                                 <td $col align="center">
 580                                         <form method='post'>
 581                                                 <input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' />
 582                                                 <input type='hidden' name='ACTION' value='delete-coupon' />
 583                                                 <input type='hidden' name='key' value='$couponhash{$key}[0]' />
 584                                         </form>
 585                                 </td>
 586                         </tr>
 587 END
 588         }
 589
 590         print "</table>";
 591
 592         # Download PDF
 593         print <<END;
 594                 <div align="right">
 595                         <form method="POST">
 596                                 <input type="hidden" name="ACTION" value="export-coupons">
 597                                 <input type="submit" value="$Lang::tr{'Captive export coupons'}">
 598                         </form>
 599                 </div>
 600 END
 601
 602         &Header::closebox();
 603 }
 604
 605 sub show_clients() {
 606         # if there are active clients which use coupons show table
 607         return if ( -z $clients || ! -f $clients );
 608
 609         my $count=0;
 610         my $col;
 611
 612         &Header::openbox('100%', 'left', $Lang::tr{'Captive clients'});
 613
 614         print <<END;
 615                 <table class='tbl' width='100%'>
 616                         <tr>
 617                                 <th align='center' width='15%'>$Lang::tr{'Captive coupon'}</th>
 618                                 <th align='center' width='15%'>$Lang::tr{'Captive activated'}</th>
 619                                 <th align='center' width='15%'>$Lang::tr{'Captive expiry time'}</th>
 620                                 <th align='center' width='10%'>$Lang::tr{'Captive mac'}</th>
 621                                 <th align='center' width='43%'>$Lang::tr{'remark'}</th>
 622                                 <th align='center' width='5%'>$Lang::tr{'delete'}</th>
 623                         </tr>
 624 END
 625
 626         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 627         foreach my $key (keys %clientshash) {
 628                 #calculate time from clientshash (starttime)
 629                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 630
 631                 #calculate endtime from clientshash
 632                 my $endtime;
 633                 if ($clientshash{$key}[3] eq '0'){
 634                         $endtime=$Lang::tr{'Captive nolimit'};
 635                 } else {
 636                         $endtime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 637                 }
 638
 639                 if ($count++ % 2) {
 640                         $col="bgcolor='$color{'color20'}'";
 641                 } else {
 642                         $col="bgcolor='$color{'color22'}'";
 643                 }
 644
 645                 my $coupon = ($clientshash{$key}[4] eq "LICENSE") ? $Lang::tr{'Captive terms short'} : $clientshash{$key}[4];
 646
 647                 print <<END;
 648                         <tr>
 649                                 <td $col align="center"><b>$coupon</b></td>
 650                                 <td $col align="center">$starttime</td>
 651                                 <td $col align="center">$endtime</td>
 652                                 <td $col align="center">$clientshash{$key}[0]</td>
 653                                 <td $col align="center">$clientshash{$key}[5]</td>
 654                                 <td $col align="center">
 655                                         <form method='post'>
 656                                                 <input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' />
 657                                                 <input type='hidden' name='ACTION' value='delete-client' />
 658                                                 <input type='hidden' name='key' value='$clientshash{$key}[0]' />
 659                                         </form>
 660                                 </td>
 661                         </tr>
 662 END
 663         }
 664
 665         print "</table>";
 666
 667         &Header::closebox();
 668 }
 669
 670 sub validremark
 671 {
 672         # Checks a hostname against RFC1035
 673         my $remark = $_[0];
 674         # Each part should be at least two characters in length
 675         # but no more than 63 characters
 676         if (length ($remark) < 1 || length ($remark) > 255) {
 677                 return 0;}
 678         # Only valid characters are a-z, A-Z, 0-9 and -
 679         if ($remark !~ /^[a-zäöüA-ZÖÄÜ0-9-.:;\|_()\/\s]*$/) {
 680                 return 0;}
 681         # First character can only be a letter or a digit
 682         if (substr ($remark, 0, 1) !~ /^[a-zäöüA-ZÖÄÜ0-9]*$/) {
 683                 return 0;}
 684         # Last character can only be a letter or a digit
 685         if (substr ($remark, -1, 1) !~ /^[a-zöäüA-ZÖÄÜ0-9.:;_)]*$/) {
 686                 return 0;}
 687         return 1;
 688 }
 689
 690 sub generate_pdf() {
 691         my $pdf = PDF::API2->new();
 692
 693         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = gmtime(time);
 694         my $timestamp = sprintf("D:%04d%02d%02d%02d%02d%02d+00;00", $year+1900, $mon+1, $mday, $hour, $min, $sec);
 695
 696         $pdf->info(
 697                 "Creator"      => $Lang::tr{'Captive portal'},
 698                 "Title"        => $Lang::tr{'Captive portal coupons'},
 699                 "CreationDate" => $timestamp,
 700                 "ModDate"      => $timestamp,
 701         );
 702
 703         # Set page size
 704         $pdf->mediabox("A4");
 705         $pdf->trimbox(28/mm, 27/mm, 182/mm, 270/mm);
 706
 707         # Set font
 708         my $font = $pdf->ttfont("/usr/share/fonts/Ubuntu-R.ttf");
 709
 710         my $page_h_margin = 27/mm;
 711         my $page_v_margin = 28/mm;
 712
 713         my $height = 68/mm;
 714         my $width  = 91/mm;
 715         my $margin =  2/mm;
 716
 717         # Tux Image
 718         my $tux_image = $pdf->image_png("/srv/web/ipfire/html/captive/assets/ipfire.png");
 719         my $logo_height = 12/mm;
 720         my $logo_width  = 12/mm;
 721
 722         my @coupons = ();
 723         my %coupon_expiry_times = ();
 724
 725         # Read coupons
 726         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 727         foreach my $key (keys %couponhash) {
 728                 $coupon_expiry_times{$couponhash{$key}[1]} = $couponhash{$key}[2];
 729                 push @coupons, $couponhash{$key}[1];
 730         }
 731
 732         while (@coupons) {
 733                 # Make a new page
 734                 my $page = $pdf->page();
 735
 736                 # Graphics
 737                 $gfx = $page->gfx();
 738
 739                 # Headline font
 740                 my $f_headline = $page->text();
 741                 $f_headline->font($font, 20);
 742
 743                 # Subheadline font
 744                 my $f_subheadline = $page->text();
 745                 $f_subheadline->font($font, 14);
 746
 747                 # Coupon font
 748                 my $f_coupon = $page->text();
 749                 $f_coupon->font($font, 36);
 750
 751                 # Lifetime
 752                 my $f_lifetime = $page->text();
 753                 $f_lifetime->font($font, 14);
 754
 755                 # Watermark font
 756                 my $f_watermark = $page->text();
 757                 $f_watermark->fillcolor("#666666");
 758                 $f_watermark->font($font, 10);
 759
 760                 my $i = 0;
 761                 while (@coupons && $i < 8) {
 762                         my $coupon = shift @coupons;
 763
 764                         # Box corners
 765                         my $x = ($page_v_margin / 2) + (($i % 2) ? $width : 0);
 766                         my $y = ($page_h_margin / 2) + (int($i / 2) * $height);
 767
 768                         # Weidth and height of the box
 769                         my $w = $width - $margin;
 770                         my $h = $height - $margin;
 771
 772                         # Center
 773                         my $cx = $x + ($w / 2);
 774                         my $cy = $y + ($h / 2);
 775
 776                         # Draw border box
 777                         $gfx->strokecolor("#333333");
 778                         $gfx->linedash(1/mm, 1/mm);
 779                         $gfx->rect($x, $y, $w, $h);
 780                         $gfx->stroke();
 781                         $gfx->endpath();
 782
 783                         # Headline
 784                         $f_headline->translate($cx, ($y + $h - $cy) / 1.7 + $cy);
 785                         $f_subheadline->translate($cx, ($y + $h - $cy) / 2.4 + $cy);
 786
 787                         if ($settings{'TITLE'}) {
 788                                 $f_headline->text_center($settings{'TITLE'});
 789                                 $f_subheadline->text_center(decode("utf8", $Lang::tr{'Captive WiFi coupon'}));
 790                         } else {
 791                                 $f_headline->text_center(decode("utf8", $Lang::tr{'Captive WiFi coupon'}));
 792                         }
 793
 794                         # Coupon
 795                         $f_coupon->translate($cx, $cy);
 796                         $f_coupon->text_center(decode("utf8", $coupon));
 797
 798                         # Show lifetime
 799                         my $expiry_time = $coupon_expiry_times{$coupon};
 800                         $f_lifetime->translate($cx, $cy - ($y + $h - $cy) / 4);
 801                         if ($expiry_time > 0) {
 802                                 my $lifetime = &General::format_time($expiry_time);
 803                                 $f_lifetime->text_center(decode("utf8", $Lang::tr{'Captive valid for'} . " " . $lifetime));
 804                         } else {
 805                                 $f_lifetime->text_center(decode("utf8", $Lang::tr{'Captive nolimit'}));
 806                         }
 807
 808                         # Add watermark
 809                         $gfx->image($tux_image, $x + $w - $logo_width - $margin, $y + $margin, $logo_width, $logo_height);
 810                         $f_watermark->translate($x + $w - ($margin * 2) - $logo_width, $y + ($logo_height / 2));
 811                         $f_watermark->text_right("Powered by IPFire");
 812
 813                         $i++;
 814                 }
 815         }
 816
 817         # Write out the PDF document
 818         return $pdf->stringify();
 819 }
 820
 821 &Header::closebigbox();
 822 &Header::closepage();