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 HTML::Entities();
  24 use File::Basename;
  25
  26 # enable only the following on debugging purpose
  27 #use warnings;
  28 #use CGI::Carp 'fatalsToBrowser';
  29
  30 require '/var/ipfire/general-functions.pl';
  31 require "${General::swroot}/lang.pl";
  32 require "${General::swroot}/header.pl";
  33
  34 my %selected = ();
  35
  36 my $coupons = "${General::swroot}/captive/coupons";
  37 my %couponhash = ();
  38
  39 my $logo = "${General::swroot}/captive/logo.dat";
  40
  41 my %settings=();
  42 my %mainsettings;
  43 my %color;
  44 my %cgiparams=();
  45 my %netsettings=();
  46 my %checked=();
  47 my $errormessage='';
  48 my $clients="${General::swroot}/captive/clients";
  49 my %clientshash=();
  50 my $settingsfile="${General::swroot}/captive/settings";
  51 unless (-e $settingsfile)       { system("touch $settingsfile"); }
  52
  53 &Header::getcgihash(\%cgiparams);
  54
  55 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  56 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  57 &General::readhash("$settingsfile", \%settings) if(-f $settingsfile);
  58 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  59
  60 &Header::showhttpheaders();
  61
  62 if ($cgiparams{'ACTION'} eq $Lang::tr{'save'}) {
  63         my $file = $cgiparams{'logo'};
  64         if ($file) {
  65                 # Check if the file extension is PNG/JPEG
  66                 chomp $file;
  67
  68                 my ($name, $path, $ext) = fileparse($file, qr/\.[^.]*$/);
  69                 if ($ext ne ".png" && $ext ne ".jpg" && $ext ne ".jpeg") {
  70                         $errormessage = $Lang::tr{'Captive wrong ext'};
  71                 }
  72         }
  73
  74         $settings{'ENABLE_GREEN'}               = $cgiparams{'ENABLE_GREEN'};
  75         $settings{'ENABLE_BLUE'}                = $cgiparams{'ENABLE_BLUE'};
  76         $settings{'AUTH'}                               = $cgiparams{'AUTH'};
  77         $settings{'TITLE'}                              = $cgiparams{'TITLE'};
  78         $settings{'UNLIMITED'}                  = $cgiparams{'UNLIMITED'};
  79         $settings{'COLOR'}                      = $cgiparams{'COLOR'};
  80         $settings{'SESSION_TIME'}               = $cgiparams{'SESSION_TIME'};
  81
  82         if (!$errormessage){
  83                 #Check if we need to upload a new logo
  84                 if ($file) {
  85                         # Save logo
  86                         my ($filehandle) = CGI::upload("logo");
  87
  88                         # XXX check filesize
  89
  90                         open(FILE, ">$logo");
  91                         binmode $filehandle;
  92                         while (<$filehandle>) {
  93                                 print FILE;
  94                         }
  95                         close(FILE);
  96                 }
  97
  98                 &General::writehash("$settingsfile", \%settings);
  99
 100                 # Save terms
 101                 if ($cgiparams{'TERMS'}){
 102                         $cgiparams{'TERMS'} = &Header::escape($cgiparams{'TERMS'});
 103                         open(FH, ">:utf8", "/var/ipfire/captive/terms.txt") or die("$!");
 104                         print FH $cgiparams{'TERMS'};
 105                         close(FH);
 106                         $cgiparams{'TERMS'} = "";
 107                 }
 108
 109                 #execute binary to reload firewall rules
 110                 system("/usr/local/bin/captivectrl");
 111
 112                 if ($cgiparams{'ENABLE_BLUE'} eq 'on'){
 113                                 system("/usr/local/bin/wirelessctrl");
 114                 }
 115         }
 116 }
 117
 118 if ($cgiparams{'ACTION'} eq "$Lang::tr{'Captive generate coupon'}"){
 119         # Generates a new coupon
 120
 121         #calculate expiredate
 122         my $expire;
 123         if ($settings{'UNLIMITED'} eq 'on'){
 124                 $expire = $Lang::tr{'Captive nolimit'};
 125         }else{
 126                 $settings{'EXPIRE'} = $cgiparams{'EXP_HOUR'}+$cgiparams{'EXP_DAY'}+$cgiparams{'EXP_WEEK'}+$cgiparams{'EXP_MONTH'};
 127                 $expire = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime(time()+$settings{'EXPIRE'}));
 128     }
 129
 130         #Check Expiretime
 131         if($cgiparams{'EXP_HOUR'}+$cgiparams{'EXP_DAY'}+$cgiparams{'EXP_WEEK'}+$cgiparams{'EXP_MONTH'} == 0 && $cgiparams{'UNLIMITED'} == ''){
 132                 $errormessage=$Lang::tr{'Captive noexpiretime'};
 133         }
 134         #check if we already have a coupon with same code
 135         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 136         foreach my $key (keys %couponhash) {
 137                 if($couponhash{$key}[1] eq $cgiparams{'CODE'}){
 138                         $errormessage=$Lang::tr{'Captive err doublevoucher'};
 139                         last;
 140                 }
 141         }
 142
 143         #check valid remark
 144         if ($cgiparams{'REMARK'} ne '' && !&validremark($cgiparams{'REMARK'})){
 145                 $errormessage=$Lang::tr{'fwhost err remark'};
 146         }
 147
 148         #if no error detected, write to disk
 149         if (!$errormessage){
 150                 my $date=time(); #seconds in utc
 151
 152                 #first get new key from hash
 153                 my $key=&General::findhasharraykey (\%couponhash);
 154                 #initialize all fields with ''
 155                 foreach my $i (0 .. 3) { $couponhash{$key}[$i] = "";}
 156                 #define fields
 157                 $couponhash{$key}[0] = $date;
 158                 $couponhash{$key}[1] = $cgiparams{'CODE'};
 159                 $couponhash{$key}[2] = $settings{'EXPIRE'};
 160                 $couponhash{$key}[3] = $cgiparams{'REMARK'};
 161                 #write values to disk
 162                 &General::writehasharray($coupons, \%couponhash);
 163
 164                 #now prepare log entry, get expiring date for voucher and decode remark for logfile
 165                 my $expdate=localtime(time()+$couponhash{$key}[3]);
 166                 my $rem=HTML::Entities::decode_entities($couponhash{$key}[4]);
 167
 168                 #write logfile entry
 169                 &General::log("Captive", "Generated new coupon $couponhash{$key}[1] $couponhash{$key}[2] hours valid expires on $expdate remark $rem");
 170         }
 171 }
 172
 173 if ($cgiparams{'ACTION'} eq 'delete-coupon') {
 174         #deletes an already generated but unused voucher
 175
 176         #read all generated vouchers
 177         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 178         foreach my $key (keys %couponhash) {
 179                 if($cgiparams{'key'} eq $couponhash{$key}[0]){
 180                         #write logenty with decoded remark
 181                         my $rem=HTML::Entities::decode_entities($couponhash{$key}[4]);
 182                         &General::log("Captive", "Delete unused coupon $couponhash{$key}[1] $couponhash{$key}[2] hours valid expires on $couponhash{$key}[3] remark $rem");
 183                         #delete line from hash
 184                         delete $couponhash{$key};
 185                         last;
 186                 }
 187         }
 188         #write back hash
 189         &General::writehasharray($coupons, \%couponhash);
 190 }
 191
 192 if ($cgiparams{'ACTION'} eq 'delete-client') {
 193         #delete voucher and connection in use
 194
 195         #read all active clients
 196         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 197         foreach my $key (keys %clientshash) {
 198                 if($cgiparams{'key'} eq $clientshash{$key}[0]){
 199                         #prepare log entry with decoded remark
 200                         my $rem=HTML::Entities::decode_entities($clientshash{$key}[7]);
 201                         #write logentry
 202                         &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");
 203                         #delete line from hash
 204                         delete $clientshash{$key};
 205                         last;
 206                 }
 207         }
 208         #write back hash
 209         &General::writehasharray("$clients", \%clientshash);
 210         #reload firewallrules to kill connection of client
 211         system("/usr/local/bin/captivectrl");
 212 }
 213
 214 #open webpage, print header and open box
 215 &Header::openpage($Lang::tr{'Captive menu'}, 1, '');
 216 &Header::openbigbox();
 217
 218 # If an error message exists, show a box with the error message
 219 if ($errormessage) {
 220         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 221         print $errormessage;
 222         &Header::closebox();
 223 }
 224
 225 # Prints the config box on the website
 226 &Header::openbox('100%', 'left', $Lang::tr{'Captive config'});
 227 print <<END
 228         <form method='post' action='$ENV{'SCRIPT_NAME'}' enctype="multipart/form-data">\n
 229                 <table width='100%' border="0">
 230                 <tr>
 231 END
 232 ;
 233
 234 #check which parameters have to be enabled (from settings file)
 235 $checked{'ENABLE_GREEN'}{'off'} = '';
 236 $checked{'ENABLE_GREEN'}{'on'} = '';
 237 $checked{'ENABLE_GREEN'}{$settings{'ENABLE_GREEN'}} = "checked='checked'";
 238
 239 $checked{'ENABLE_BLUE'}{'off'} = '';
 240 $checked{'ENABLE_BLUE'}{'on'} = '';
 241 $checked{'ENABLE_BLUE'}{$settings{'ENABLE_BLUE'}} = "checked='checked'";
 242
 243 $checked{'UNLIMITED'}{'off'} = '';
 244 $checked{'UNLIMITED'}{'on'} = '';
 245 $checked{'UNLIMITED'}{$settings{'UNLIMITED'}} = "checked='checked'";
 246
 247 if ($netsettings{'GREEN_DEV'}){
 248         print "<td width='30%'>$Lang::tr{'Captive active on'} <font color='$Header::colourgreen'>Green</font></td><td><input type='checkbox' name='ENABLE_GREEN' $checked{'ENABLE_GREEN'}{'on'} /></td></tr>";
 249 }
 250 if ($netsettings{'BLUE_DEV'}){
 251         print "<td width='30%'>$Lang::tr{'Captive active on'} <font color='$Header::colourblue'>Blue</font></td><td><input type='checkbox' name='ENABLE_BLUE' $checked{'ENABLE_BLUE'}{'on'} /></td></tr>";
 252 }
 253
 254 print<<END
 255         </tr>
 256         <tr>
 257                 <td>
 258                         $Lang::tr{'Captive authentication'}
 259                 </td>
 260                 <td>
 261                         <select name='AUTH'>
 262 END
 263 ;
 264
 265 print "<option value='TERMS' ";
 266 print " selected='selected'" if ($settings{'AUTH'} eq 'TERMS');
 267 print ">$Lang::tr{'Captive terms'}</option>";
 268
 269 print "<option value='COUPON' ";
 270 print " selected='selected'" if ($settings{'AUTH'} eq 'COUPON');
 271 print ">$Lang::tr{'Captive coupon'}</option>";
 272
 273 print<<END
 274                         </select>
 275                 </td>
 276         </tr>
 277 END
 278 ;
 279
 280 if ($settings{'AUTH'} eq 'TERMS') {
 281         $selected{'SESSION_TIME'} = ();
 282         $selected{'SESSION_TIME'}{'0'} = "";
 283         $selected{'SESSION_TIME'}{'3600'} = "";
 284         $selected{'SESSION_TIME'}{'86400'} = "";
 285         $selected{'SESSION_TIME'}{'604800'} = "";
 286         $selected{'SESSION_TIME'}{'18144000'} = "";
 287         $selected{'SESSION_TIME'}{$settings{'SESSION_TIME'}} = "selected";
 288
 289         my $terms = &getterms();
 290         print <<END;
 291                 <tr>
 292                         <td></td>
 293                         <td>
 294                                 <textarea cols="50" rows="10" name="TERMS">$terms</textarea>
 295                         </td>
 296                 </tr>
 297
 298                 <tr>
 299                         <td>$Lang::tr{'Captive client session expiry time'}</td>
 300                         <td>
 301                                 <select name="SESSION_TIME">
 302                                         <option value="0"        $selected{'SESSION_TIME'}{'0'}>- $Lang::tr{'unlimited'} -</option>
 303                                         <option value="3600"     $selected{'SESSION_TIME'}{'3600'}>$Lang::tr{'one hour'}</option>
 304                                         <option value="86400"    $selected{'SESSION_TIME'}{'86400'}>$Lang::tr{'24 hours'}</option>
 305                                         <option value="604800"   $selected{'SESSION_TIME'}{'604800'}>$Lang::tr{'one week'}</option>
 306                                         <option value="18144000" $selected{'SESSION_TIME'}{'18144000'}>$Lang::tr{'one month'}</option>
 307                                 </select>
 308                         </td>
 309                 </tr>
 310 END
 311 }
 312
 313 print<<END;
 314         <tr>
 315                 <td colspan="2">
 316                         <br>
 317                         <strong>$Lang::tr{'Captive branding'}</strong>
 318                 </td>
 319         </tr>
 320         <tr>
 321                 <td>
 322                         $Lang::tr{'Captive title'}
 323                 </td>
 324                 <td>
 325                         <input type='text' name='TITLE' value="$settings{'TITLE'}" size='40'>
 326                 </td>
 327         </tr>
 328         <tr>
 329                 <td>$Lang::tr{'Captive brand color'}</td>
 330                 <td>
 331                         <input type="color" name="COLOR" value="$settings{'COLOR'}">
 332                 </td>
 333         </tr>
 334 END
 335
 336 # Logo Upload
 337 print <<END;
 338         <tr>
 339                 <td>
 340                         $Lang::tr{'Captive logo_upload'}
 341                         <br>
 342                         $Lang::tr{'Captive logo_upload1'}
 343                 </td>
 344                 <td>
 345                         <input type="file" name="logo">
 346                 </td>
 347         </tr>
 348 END
 349
 350 if (-e $logo) {
 351         print <<END;
 352                 <tr>
 353                         <td>$Lang::tr{'Captive logo uploaded'}</td>
 354                         <td>$Lang::tr{'yes'}</td>
 355                 </tr>
 356 END
 357 }
 358
 359 print <<END;
 360         <tr>
 361                 <td></td>
 362                 <td align='right'>
 363                         <input type='submit' name='ACTION' value="$Lang::tr{'save'}"/>
 364                 </td>
 365         </tr>
 366         </table></form>
 367 END
 368
 369 &Header::closebox();
 370
 371 #if settings is set to use coupons, the coupon part has to be displayed
 372 if ($settings{'AUTH'} eq 'COUPON') {
 373         &coupons();
 374 } else {
 375         #otherwise we show the licensepart
 376         &show_license_connections();
 377 }
 378
 379 sub getterms() {
 380         my @ret;
 381
 382         open(FILE, "<:utf8", "/var/ipfire/captive/terms.txt");
 383         while(<FILE>) {
 384                 push(@ret, HTML::Entities::decode_entities($_));
 385         }
 386         close(FILE);
 387
 388         return join(/\n/, @ret);
 389 }
 390
 391 sub gencode(){
 392         #generate a random code only letters from A-Z except 'O'  and 0-9
 393         my @chars = ("A".."N", "P".."Z", "0".."9");
 394         my $randomstring;
 395         $randomstring .= $chars[rand @chars] for 1..8;
 396         return $randomstring;
 397 }
 398
 399 sub coupons() {
 400         &Header::openbox('100%', 'left', $Lang::tr{'Captive generate coupon'});
 401         print "<form method='post' action='$ENV{'SCRIPT_NAME'}'>";
 402         print "<table border='0' width='100%'>";
 403         print "<tr><td width='30%'><br>$Lang::tr{'Captive vouchervalid'}</td><td width='70%'><br>";
 404
 405                 print "<table class='tbl' border='0' width='100%'>";
 406                 print "<th>$Lang::tr{'hours'}</th><th>$Lang::tr{'days'}</th><th>$Lang::tr{'weeks'}</th><th>$Lang::tr{'months'}</th><th></th><th></th>";
 407
 408                 #print hour-dropdownbox
 409                 my $hrs=3600;
 410                 print "<tr height='40px'><td><select name='EXP_HOUR' style='width:8em;'>";
 411                 print "<option value='0' ";
 412                 print " selected='selected'" if ($settings{'EXP_HOUR'} eq '0');
 413                 print ">--</option>";
 414                 for (my $i = 1; $i<25; $i++){
 415                         my $exp_sec = $i * $hrs;
 416                         print "<option value='$exp_sec' ";
 417                         print " selected='selected'" if ($settings{'EXP_HOUR'} eq $exp_sec);
 418                         print ">$i</option>";
 419                 }
 420                 print "</td><td>";
 421
 422                 #print day-dropdownbox
 423                 my $days=3600*24;
 424                 print "<select name='EXP_DAY' style='width:8em;'>";
 425                 print "<option value='0' ";
 426                 print " selected='selected'" if ($settings{'EXP_DAY'} eq '0');
 427                 print ">--</option>";
 428                 for (my $i = 1; $i<8; $i++){
 429                         my $exp_sec = $i * $days;
 430                         print "<option value='$exp_sec' ";
 431                         print " selected='selected'" if ($settings{'EXP_DAY'} eq $exp_sec);
 432                         print ">$i</option>";
 433                 }
 434                 print "</td><td>";
 435
 436                 #print week-dropdownbox
 437                 my $week=3600*24*7;
 438                 print "<select name='EXP_WEEK' style='width:8em;'>";
 439                 print "<option value='0' ";
 440                 print " selected='selected'" if ($settings{'EXP_WEEK'} eq '0');
 441                 print ">--</option>";
 442                 for (my $i = 1; $i<5; $i++){
 443                         my $exp_sec = $i * $week;
 444                         print "<option value='$exp_sec' ";
 445                         print " selected='selected'" if ($settings{'EXP_WEEK'} eq $exp_sec);
 446                         print ">$i</option>";
 447                 }
 448                 print "</td><td>";
 449
 450                 #print month-dropdownbox
 451                 my $month=3600*24*30;
 452                 print "<select name='EXP_MONTH' style='width:8em;'>";
 453                 print "<option value='0' ";
 454                 print " selected='selected'" if ($settings{'EXP_MONTH'} eq '0');
 455                 print ">--</option>";
 456                 for (my $i = 1; $i<13; $i++){
 457                         my $exp_sec = $i * $month;
 458                         print "<option value='$exp_sec' ";
 459                         print " selected='selected'" if ($settings{'EXP_MONTH'} eq $exp_sec);
 460                         print ">$i</option>";
 461                 }
 462                 print "</td>";
 463                 print "<td>&nbsp;&nbsp;&nbsp;<input type='checkbox' name='UNLIMITED' $checked{'UNLIMITED'}{'on'} /></td><td>&nbsp;<b>$Lang::tr{'Captive nolimit'}</b></td>";
 464                 print "</tr></table>";
 465         print "</td></tr>";
 466         print "<tr><td><br>$Lang::tr{'remark'}</td><td><br><input type='text' style='width: 98%;' name='REMARK'  align='left'></td></tr>";
 467         print "<tr><td>&nbsp</td><td></td></tr></table><br><br>";
 468         $cgiparams{'CODE'} = &gencode();
 469         print "<div align='right'><input type='submit' name='ACTION' value='$Lang::tr{'Captive generate coupon'}'><input type='hidden' name='CODE' value='$cgiparams{'CODE'}'></form></div>";
 470
 471         &Header::closebox();
 472
 473         # Show all coupons if exist
 474         if (! -z $coupons) {
 475                 &show_coupons();
 476         }
 477
 478         if (! -z $clients) {
 479                 &show_clients();
 480         }
 481 }
 482
 483 sub show_license_connections(){
 484         #if there are active clients, show the box with active connections
 485         return if ( -z $clients || ! -f $clients );
 486         my $count=0;
 487         my $col;
 488         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 489 print<<END
 490                 <center><table class='tbl'>
 491                 <tr>
 492                         <th align='center' width='15%'>$Lang::tr{'Captive coupon'}</th><th th align='center' width='15%'>$Lang::tr{'Captive activated'}</th><th th align='center' width='15%'>$Lang::tr{'Captive expire'}</th><th align='center' width='50%'><font size='1'>$Lang::tr{'Captive mac'}</th><th th align='center' width='5%'>$Lang::tr{'delete'}</th></tr>
 493 END
 494 ;
 495         #read all clients from hash and show table
 496         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 497         foreach my $key (keys %clientshash){
 498                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 499                 my $endtime;
 500                 if ($clientshash{$key}[3] eq '0'){
 501                         $endtime=$Lang::tr{'Captive nolimit'};
 502                 }else{
 503                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 504                 }
 505
 506                 if ($count % 2){
 507                         print" <tr>";
 508                         $col="bgcolor='$color{'color20'}'";
 509                 }else{
 510                         $col="bgcolor='$color{'color22'}'";
 511                         print" <tr>";
 512                 }
 513                 print "<td $col><center>$clientshash{$key}[4]</td><td $col><center>$starttime ";
 514                 print "</center></td><td $col><center>$endtime ";
 515                 print "</td><td $col><center>$clientshash{$key}[0]</td><td $col><form method='post'><center><input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' /><form method='post'><input type='hidden' name='ACTION' value='delete-client' /><input type='hidden' name='key' value='$clientshash{$key}[0]' /></form></tr>";
 516                 $count++;
 517         }
 518
 519         print "</table>";
 520         &Header::closebox();
 521 }
 522
 523 sub show_coupons() {
 524         #if there are already generated but unsused coupons, print a table
 525         my $count=0;
 526         my $col;
 527         &Header::openbox('100%', 'left', $Lang::tr{'Captive vout'});
 528         print<<END
 529                 <center><table class='tbl' border='0'>
 530                 <tr>
 531                         <th align='center' width='15%'>$Lang::tr{'Captive coupon'}</th><th align='center' width='15%'>$Lang::tr{'date'}</th><th th align='center' width='15%'>$Lang::tr{'Captive expire'}</th><th align='center' width='60%'>$Lang::tr{'remark'}</th><th align='center' width='5%'>$Lang::tr{'delete'}</th></tr>
 532 END
 533 ;
 534         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 535         foreach my $key (keys %couponhash)
 536         {
 537                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($couponhash{$key}[0]));
 538                 my $endtime;
 539                 if ($couponhash{$key}[2] eq '0'){
 540                         $endtime=$Lang::tr{'Captive nolimit'};
 541                 }else{
 542                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime(time()+$couponhash{$key}[2]));
 543                 }
 544
 545                 if ($count % 2){
 546                         print" <tr>";
 547                         $col="bgcolor='$color{'color20'}'";
 548                 }else{
 549                         $col="bgcolor='$color{'color22'}'";
 550                         print" <tr>";
 551                 }
 552
 553                 print "<td $col><center><b>$couponhash{$key}[1]</b></td>";
 554                 print "<td $col><center>$starttime</td>";
 555                 print "<td $col><center>$endtime</td>";
 556                 print "<td $col align='center'>$couponhash{$key}[3]</td>";
 557                 print "<td $col><form method='post'><center><input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' /><form method='post'><input type='hidden' name='ACTION' value='delete-coupon' /><input type='hidden' name='key' value='$couponhash{$key}[0]' /></form></tr>";
 558                 $count++;
 559         }
 560
 561         print "</table>";
 562         &Header::closebox();
 563 }
 564
 565 sub show_clients() {
 566         #if there are active clients which use coupons show table
 567         return if ( -z $clients || ! -f $clients );
 568         my $count=0;
 569         my $col;
 570         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 571 print<<END
 572         <center><table class='tbl' width='100%'>
 573                 <tr>
 574                         <th align='center' width='15%'>$Lang::tr{'Captive coupon'}</th><th th align='center' width='15%'>$Lang::tr{'Captive activated'}</th><th align='center' width='15%'>$Lang::tr{'Captive expire'}</th><th align='center' width='10%'>$Lang::tr{'Captive mac'}</th><th align='center' width='43%'>$Lang::tr{'remark'}</th><th th align='center' width='5%'>$Lang::tr{'delete'}</th></tr>
 575 END
 576 ;
 577         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 578         foreach my $key (keys %clientshash)
 579         {
 580                 #calculate time from clientshash (starttime)
 581                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 582                 #calculate endtime from clientshash
 583                 my $endtime;
 584                 if ($clientshash{$key}[3] eq '0'){
 585                         $endtime=$Lang::tr{'Captive nolimit'};
 586                 }else{
 587                         $endtime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 588                 }
 589
 590                         if ($count % 2){
 591                                 print" <tr>";
 592                                 $col="bgcolor='$color{'color20'}'";
 593                         }else{
 594                                 $col="bgcolor='$color{'color22'}'";
 595                                 print" <tr>";
 596                         }
 597
 598                         print "<td $col><center><b>$clientshash{$key}[4]</b></td><td $col><center>$starttime ";
 599                         print "</center></td><td $col><center>$endtime</center></td><td $col><center>$clientshash{$key}[0]</td><td $col><center>$clientshash{$key}[5]</center>";
 600                         print "</td><td $col><form method='post'><center><input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' /><form method='post'><input type='hidden' name='ACTION' value='delete-client' /><input type='hidden' name='key' value='$clientshash{$key}[0]' /></form></tr>";
 601                         $count++;
 602         }
 603
 604         print "</table>";
 605         &Header::closebox();
 606 }
 607
 608 sub validremark
 609 {
 610         # Checks a hostname against RFC1035
 611         my $remark = $_[0];
 612         # Each part should be at least two characters in length
 613         # but no more than 63 characters
 614         if (length ($remark) < 1 || length ($remark) > 255) {
 615                 return 0;}
 616         # Only valid characters are a-z, A-Z, 0-9 and -
 617         if ($remark !~ /^[a-zäöüA-ZÖÄÜ0-9-.:;\|_()\/\s]*$/) {
 618                 return 0;}
 619         # First character can only be a letter or a digit
 620         if (substr ($remark, 0, 1) !~ /^[a-zäöüA-ZÖÄÜ0-9]*$/) {
 621                 return 0;}
 622         # Last character can only be a letter or a digit
 623         if (substr ($remark, -1, 1) !~ /^[a-zöäüA-ZÖÄÜ0-9.:;_)]*$/) {
 624                 return 0;}
 625         return 1;
 626 }
 627
 628 &Header::closebigbox();
 629 &Header::closepage();