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{'COLOR'}                      = $cgiparams{'COLOR'};
  79         $settings{'SESSION_TIME'}               = $cgiparams{'SESSION_TIME'};
  80
  81         if (!$errormessage){
  82                 #Check if we need to upload a new logo
  83                 if ($file) {
  84                         # Save logo
  85                         my ($filehandle) = CGI::upload("logo");
  86
  87                         # XXX check filesize
  88
  89                         open(FILE, ">$logo");
  90                         binmode $filehandle;
  91                         while (<$filehandle>) {
  92                                 print FILE;
  93                         }
  94                         close(FILE);
  95                 }
  96
  97                 &General::writehash("$settingsfile", \%settings);
  98
  99                 # Save terms
 100                 if ($cgiparams{'TERMS'}){
 101                         $cgiparams{'TERMS'} = &Header::escape($cgiparams{'TERMS'});
 102                         open(FH, ">:utf8", "/var/ipfire/captive/terms.txt") or die("$!");
 103                         print FH $cgiparams{'TERMS'};
 104                         close(FH);
 105                         $cgiparams{'TERMS'} = "";
 106                 }
 107
 108                 #execute binary to reload firewall rules
 109                 system("/usr/local/bin/captivectrl");
 110
 111                 if ($cgiparams{'ENABLE_BLUE'} eq 'on'){
 112                                 system("/usr/local/bin/wirelessctrl");
 113                 }
 114         }
 115 }
 116
 117 if ($cgiparams{'ACTION'} eq "$Lang::tr{'Captive generate coupon'}"){
 118         # Generates a new coupon
 119         $cgiparams{'CODE'} = &gencode();
 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 $selected{'AUTH'} = ();
 248 $selected{'AUTH'}{'COUPON'} = "";
 249 $selected{'AUTH'}{'TERMS'} = "";
 250 $selected{'AUTH'}{$settings{'AUTH'}} = "selected";
 251
 252 if ($netsettings{'GREEN_DEV'}){
 253         print "<td width='30%'>$Lang::tr{'Captive active on'} <font color='$Header::colourgreen'>Green</font></td><td><input type='checkbox' name='ENABLE_GREEN' $checked{'ENABLE_GREEN'}{'on'} /></td></tr>";
 254 }
 255 if ($netsettings{'BLUE_DEV'}){
 256         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>";
 257 }
 258
 259 print<<END
 260         </tr>
 261         <tr>
 262                 <td>
 263                         $Lang::tr{'Captive authentication'}
 264                 </td>
 265                 <td>
 266                         <select name='AUTH'>
 267                                 <option value="TERMS"  $selected{'AUTH'}{'TERMS'} >$Lang::tr{'Captive terms'}</option>
 268                                 <option value="COUPON" $selected{'AUTH'}{'COUPON'}>$Lang::tr{'Captive coupon'}</option>
 269                         </select>
 270                 </td>
 271         </tr>
 272 END
 273 ;
 274
 275 if ($settings{'AUTH'} eq 'TERMS') {
 276         $selected{'SESSION_TIME'} = ();
 277         $selected{'SESSION_TIME'}{'0'} = "";
 278         $selected{'SESSION_TIME'}{'3600'} = "";
 279         $selected{'SESSION_TIME'}{'86400'} = "";
 280         $selected{'SESSION_TIME'}{'604800'} = "";
 281         $selected{'SESSION_TIME'}{'18144000'} = "";
 282         $selected{'SESSION_TIME'}{$settings{'SESSION_TIME'}} = "selected";
 283
 284         my $terms = &getterms();
 285         print <<END;
 286                 <tr>
 287                         <td></td>
 288                         <td>
 289                                 <textarea cols="50" rows="10" name="TERMS">$terms</textarea>
 290                         </td>
 291                 </tr>
 292
 293                 <tr>
 294                         <td>$Lang::tr{'Captive client session expiry time'}</td>
 295                         <td>
 296                                 <select name="SESSION_TIME">
 297                                         <option value="0"        $selected{'SESSION_TIME'}{'0'}>- $Lang::tr{'unlimited'} -</option>
 298                                         <option value="3600"     $selected{'SESSION_TIME'}{'3600'}>$Lang::tr{'one hour'}</option>
 299                                         <option value="86400"    $selected{'SESSION_TIME'}{'86400'}>$Lang::tr{'24 hours'}</option>
 300                                         <option value="604800"   $selected{'SESSION_TIME'}{'604800'}>$Lang::tr{'one week'}</option>
 301                                         <option value="18144000" $selected{'SESSION_TIME'}{'18144000'}>$Lang::tr{'one month'}</option>
 302                                 </select>
 303                         </td>
 304                 </tr>
 305 END
 306 }
 307
 308 print<<END;
 309         <tr>
 310                 <td colspan="2">
 311                         <br>
 312                         <strong>$Lang::tr{'Captive branding'}</strong>
 313                 </td>
 314         </tr>
 315         <tr>
 316                 <td>
 317                         $Lang::tr{'Captive title'}
 318                 </td>
 319                 <td>
 320                         <input type='text' name='TITLE' value="$settings{'TITLE'}" size='40'>
 321                 </td>
 322         </tr>
 323         <tr>
 324                 <td>$Lang::tr{'Captive brand color'}</td>
 325                 <td>
 326                         <input type="color" name="COLOR" value="$settings{'COLOR'}">
 327                 </td>
 328         </tr>
 329         <tr>
 330                 <td>
 331                         $Lang::tr{'Captive upload logo'}
 332                 </td>
 333                 <td>
 334                         <input type="file" name="logo">
 335                         <br>$Lang::tr{'Captive upload logo recommendations'}
 336                 </td>
 337         </tr>
 338 END
 339
 340 if (-e $logo) {
 341         print <<END;
 342                 <tr>
 343                         <td>$Lang::tr{'Captive logo uploaded'}</td>
 344                         <td>$Lang::tr{'yes'}</td>
 345                 </tr>
 346 END
 347 }
 348
 349 print <<END;
 350         <tr>
 351                 <td></td>
 352                 <td align='right'>
 353                         <input type='submit' name='ACTION' value="$Lang::tr{'save'}"/>
 354                 </td>
 355         </tr>
 356         </table></form>
 357 END
 358
 359 &Header::closebox();
 360
 361 #if settings is set to use coupons, the coupon part has to be displayed
 362 if ($settings{'AUTH'} eq 'COUPON') {
 363         &coupons();
 364 } else {
 365         #otherwise we show the licensepart
 366         &show_license_connections();
 367 }
 368
 369 sub getterms() {
 370         my @ret;
 371
 372         open(FILE, "<:utf8", "/var/ipfire/captive/terms.txt");
 373         while(<FILE>) {
 374                 push(@ret, HTML::Entities::decode_entities($_));
 375         }
 376         close(FILE);
 377
 378         return join(/\n/, @ret);
 379 }
 380
 381 sub gencode(){
 382         #generate a random code only letters from A-Z except 'O'  and 0-9
 383         my @chars = ("A".."N", "P".."Z", "0".."9");
 384         my $randomstring;
 385         $randomstring .= $chars[rand @chars] for 1..8;
 386         return $randomstring;
 387 }
 388
 389 sub coupons() {
 390         &Header::openbox('100%', 'left', $Lang::tr{'Captive generate coupon'});
 391         print <<END;
 392                 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 393                         <table border='0' width='100%'>
 394                                 <tr>
 395                                         <td width='30%'>
 396                                                 $Lang::tr{'Captive vouchervalid'}
 397                                         </td>
 398                                         <td width='70%'>
 399                                                 <table class='tbl' border='0' width='100%'>
 400                                                         <tr>
 401                                                                 <th>$Lang::tr{'hours'}</th>
 402                                                                 <th>$Lang::tr{'days'}</th>
 403                                                                 <th>$Lang::tr{'weeks'}</th>
 404                                                                 <th>$Lang::tr{'months'}</th>
 405                                                                 <th></th>
 406                                                         </tr>
 407 END
 408
 409                 #print hour-dropdownbox
 410                 my $hrs=3600;
 411                 print "<tr height='40px'><td><select name='EXP_HOUR' style='width:8em;'>";
 412                 print "<option value='0' ";
 413                 print " selected='selected'" if ($settings{'EXP_HOUR'} eq '0');
 414                 print ">--</option>";
 415                 for (my $i = 1; $i<25; $i++){
 416                         my $exp_sec = $i * $hrs;
 417                         print "<option value='$exp_sec' ";
 418                         print " selected='selected'" if ($settings{'EXP_HOUR'} eq $exp_sec);
 419                         print ">$i</option>";
 420                 }
 421                 print "</td><td>";
 422
 423                 #print day-dropdownbox
 424                 my $days=3600*24;
 425                 print "<select name='EXP_DAY' style='width:8em;'>";
 426                 print "<option value='0' ";
 427                 print " selected='selected'" if ($settings{'EXP_DAY'} eq '0');
 428                 print ">--</option>";
 429                 for (my $i = 1; $i<8; $i++){
 430                         my $exp_sec = $i * $days;
 431                         print "<option value='$exp_sec' ";
 432                         print " selected='selected'" if ($settings{'EXP_DAY'} eq $exp_sec);
 433                         print ">$i</option>";
 434                 }
 435                 print "</td><td>";
 436
 437                 #print week-dropdownbox
 438                 my $week=3600*24*7;
 439                 print "<select name='EXP_WEEK' style='width:8em;'>";
 440                 print "<option value='0' ";
 441                 print " selected='selected'" if ($settings{'EXP_WEEK'} eq '0');
 442                 print ">--</option>";
 443                 for (my $i = 1; $i<5; $i++){
 444                         my $exp_sec = $i * $week;
 445                         print "<option value='$exp_sec' ";
 446                         print " selected='selected'" if ($settings{'EXP_WEEK'} eq $exp_sec);
 447                         print ">$i</option>";
 448                 }
 449                 print "</td><td>";
 450
 451                 #print month-dropdownbox
 452                 my $month=3600*24*30;
 453                 print "<select name='EXP_MONTH' style='width:8em;'>";
 454                 print "<option value='0' ";
 455                 print " selected='selected'" if ($settings{'EXP_MONTH'} eq '0');
 456                 print ">--</option>";
 457                 for (my $i = 1; $i<13; $i++){
 458                         my $exp_sec = $i * $month;
 459                         print "<option value='$exp_sec' ";
 460                         print " selected='selected'" if ($settings{'EXP_MONTH'} eq $exp_sec);
 461                         print ">$i</option>";
 462                 }
 463                 print <<END;
 464                                                                 </td>
 465                                                                 <td>
 466                                                                         <label>
 467                                                                                 <input type='checkbox' name='UNLIMITED' $checked{'UNLIMITED'}{'on'} />
 468                                                                                 $Lang::tr{'Captive nolimit'}
 469                                                                         </label>
 470                                                                 </td>
 471                                                         </tr>
 472                                                 </table>
 473                                         </td>
 474                                 </tr>
 475                                 <tr>
 476                                         <td>$Lang::tr{'remark'}</td>
 477                                         <td>
 478                                                 <input type='text' style='width: 98%;' name='REMARK' align='left'>
 479                                         </td>
 480                                 </tr>
 481                         </table>
 482
 483                         <div align="right">
 484                                 <input type="submit" name="ACTION" value="$Lang::tr{'Captive generate coupon'}">
 485                         </div>
 486                 </form>
 487 END
 488
 489         &Header::closebox();
 490
 491         # Show all coupons if exist
 492         if (! -z $coupons) {
 493                 &show_coupons();
 494         }
 495
 496         if (! -z $clients) {
 497                 &show_clients();
 498         }
 499 }
 500
 501 sub show_license_connections(){
 502         #if there are active clients, show the box with active connections
 503         return if ( -z $clients || ! -f $clients );
 504         my $count=0;
 505         my $col;
 506         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 507 print<<END
 508                 <center><table class='tbl'>
 509                 <tr>
 510                         <th align='center' width='15%'>$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>
 511 END
 512 ;
 513         #read all clients from hash and show table
 514         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 515         foreach my $key (keys %clientshash){
 516                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 517                 my $endtime;
 518                 if ($clientshash{$key}[3] eq '0'){
 519                         $endtime=$Lang::tr{'Captive nolimit'};
 520                 }else{
 521                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 522                 }
 523
 524                 if ($count % 2){
 525                         print" <tr>";
 526                         $col="bgcolor='$color{'color20'}'";
 527                 }else{
 528                         $col="bgcolor='$color{'color22'}'";
 529                         print" <tr>";
 530                 }
 531                 print "<td $col><center>$clientshash{$key}[4]</td><td $col><center>$starttime ";
 532                 print "</center></td><td $col><center>$endtime ";
 533                 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>";
 534                 $count++;
 535         }
 536
 537         print "</table>";
 538         &Header::closebox();
 539 }
 540
 541 sub show_coupons() {
 542         #if there are already generated but unsused coupons, print a table
 543         my $count=0;
 544         my $col;
 545         &Header::openbox('100%', 'left', $Lang::tr{'Captive vout'});
 546         print<<END
 547                 <center><table class='tbl' border='0'>
 548                 <tr>
 549                         <th align='center' width='15%'>$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>
 550 END
 551 ;
 552         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 553         foreach my $key (keys %couponhash)
 554         {
 555                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($couponhash{$key}[0]));
 556                 my $endtime;
 557                 if ($couponhash{$key}[2] eq '0'){
 558                         $endtime=$Lang::tr{'Captive nolimit'};
 559                 }else{
 560                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime(time()+$couponhash{$key}[2]));
 561                 }
 562
 563                 if ($count % 2){
 564                         print" <tr>";
 565                         $col="bgcolor='$color{'color20'}'";
 566                 }else{
 567                         $col="bgcolor='$color{'color22'}'";
 568                         print" <tr>";
 569                 }
 570
 571                 print "<td $col><center><b>$couponhash{$key}[1]</b></td>";
 572                 print "<td $col><center>$starttime</td>";
 573                 print "<td $col><center>$endtime</td>";
 574                 print "<td $col align='center'>$couponhash{$key}[3]</td>";
 575                 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>";
 576                 $count++;
 577         }
 578
 579         print "</table>";
 580         &Header::closebox();
 581 }
 582
 583 sub show_clients() {
 584         #if there are active clients which use coupons show table
 585         return if ( -z $clients || ! -f $clients );
 586         my $count=0;
 587         my $col;
 588         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 589 print<<END
 590         <center><table class='tbl' width='100%'>
 591                 <tr>
 592                         <th align='center' width='15%'>$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%'>$Lang::tr{'delete'}</th></tr>
 593 END
 594 ;
 595         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 596         foreach my $key (keys %clientshash)
 597         {
 598                 #calculate time from clientshash (starttime)
 599                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 600                 #calculate endtime from clientshash
 601                 my $endtime;
 602                 if ($clientshash{$key}[3] eq '0'){
 603                         $endtime=$Lang::tr{'Captive nolimit'};
 604                 }else{
 605                         $endtime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 606                 }
 607
 608                         if ($count % 2){
 609                                 print" <tr>";
 610                                 $col="bgcolor='$color{'color20'}'";
 611                         }else{
 612                                 $col="bgcolor='$color{'color22'}'";
 613                                 print" <tr>";
 614                         }
 615
 616                         print "<td $col><center><b>$clientshash{$key}[4]</b></td><td $col><center>$starttime ";
 617                         print "</center></td><td $col><center>$endtime</center></td><td $col><center>$clientshash{$key}[0]</td><td $col><center>$clientshash{$key}[5]</center>";
 618                         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>";
 619                         $count++;
 620         }
 621
 622         print "</table>";
 623         &Header::closebox();
 624 }
 625
 626 sub validremark
 627 {
 628         # Checks a hostname against RFC1035
 629         my $remark = $_[0];
 630         # Each part should be at least two characters in length
 631         # but no more than 63 characters
 632         if (length ($remark) < 1 || length ($remark) > 255) {
 633                 return 0;}
 634         # Only valid characters are a-z, A-Z, 0-9 and -
 635         if ($remark !~ /^[a-zäöüA-ZÖÄÜ0-9-.:;\|_()\/\s]*$/) {
 636                 return 0;}
 637         # First character can only be a letter or a digit
 638         if (substr ($remark, 0, 1) !~ /^[a-zäöüA-ZÖÄÜ0-9]*$/) {
 639                 return 0;}
 640         # Last character can only be a letter or a digit
 641         if (substr ($remark, -1, 1) !~ /^[a-zöäüA-ZÖÄÜ0-9.:;_)]*$/) {
 642                 return 0;}
 643         return 1;
 644 }
 645
 646 &Header::closebigbox();
 647 &Header::closepage();