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 #actions
  63 if ($cgiparams{'ACTION'} eq "$Lang::tr{'save'}"){
  64         my $file = $cgiparams{'logo'};
  65         if ($file){
  66                 #Check if extension is png
  67                 chomp $file;
  68                 my ($name, $path, $ext) = fileparse($file, qr/\.[^.]*$/);
  69                 if ($ext ne ".png"){
  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 #call error() to see if we have to print an errormessage on website
 219 &error();
 220
 221 #call config() to display the configuration box
 222 &config();
 223
 224 sub getterms(){
 225         my @ret;
 226
 227         open(FILE, "<:utf8", "/var/ipfire/captive/terms.txt");
 228         while(<FILE>) {
 229                 push(@ret, HTML::Entities::decode_entities($_));
 230         }
 231         close(FILE);
 232
 233         return join(/\n/, @ret);
 234 }
 235
 236 sub config(){
 237         #prints the config box on the website
 238         &Header::openbox('100%', 'left', $Lang::tr{'Captive config'});
 239         print <<END
 240                 <form method='post' action='$ENV{'SCRIPT_NAME'}' enctype="multipart/form-data">\n
 241                 <table width='100%' border="0">
 242                 <tr>
 243 END
 244 ;
 245         #check which parameters have to be enabled (from settings file)
 246         $checked{'ENABLE_GREEN'}{'off'} = '';
 247         $checked{'ENABLE_GREEN'}{'on'} = '';
 248         $checked{'ENABLE_GREEN'}{$settings{'ENABLE_GREEN'}} = "checked='checked'";
 249
 250         $checked{'ENABLE_BLUE'}{'off'} = '';
 251         $checked{'ENABLE_BLUE'}{'on'} = '';
 252         $checked{'ENABLE_BLUE'}{$settings{'ENABLE_BLUE'}} = "checked='checked'";
 253
 254         $checked{'UNLIMITED'}{'off'} = '';
 255         $checked{'UNLIMITED'}{'on'} = '';
 256         $checked{'UNLIMITED'}{$settings{'UNLIMITED'}} = "checked='checked'";
 257
 258         if ($netsettings{'GREEN_DEV'}){
 259                 print "<td width='30%'>$Lang::tr{'Captive active on'} <font color='$Header::colourgreen'>Green</font></td><td><input type='checkbox' name='ENABLE_GREEN' $checked{'ENABLE_GREEN'}{'on'} /></td></tr>";
 260         }
 261         if ($netsettings{'BLUE_DEV'}){
 262                 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>";
 263         }
 264
 265 print<<END
 266                 </tr>
 267                 <tr>
 268                         <td>
 269                                 $Lang::tr{'Captive authentication'}
 270                         </td>
 271                         <td>
 272                                 <select name='AUTH'>
 273 END
 274 ;
 275         print "<option value='TERMS' ";
 276         print " selected='selected'" if ($settings{'AUTH'} eq 'TERMS');
 277         print ">$Lang::tr{'Captive terms'}</option>";
 278
 279         print "<option value='COUPON' ";
 280         print " selected='selected'" if ($settings{'AUTH'} eq 'COUPON');
 281         print ">$Lang::tr{'Captive coupon'}</option>";
 282
 283         print<<END
 284                                 </select>
 285                         </td>
 286                 </tr>
 287 END
 288 ;
 289         if ($settings{'AUTH'} eq 'TERMS') {
 290                 $selected{'SESSION_TIME'} = ();
 291                 $selected{'SESSION_TIME'}{'0'} = "";
 292                 $selected{'SESSION_TIME'}{'3600'} = "";
 293                 $selected{'SESSION_TIME'}{'86400'} = "";
 294                 $selected{'SESSION_TIME'}{'604800'} = "";
 295                 $selected{'SESSION_TIME'}{'18144000'} = "";
 296                 $selected{'SESSION_TIME'}{$settings{'SESSION_TIME'}} = "selected";
 297
 298                 my $terms = &getterms();
 299                 print <<END;
 300                         <tr>
 301                                 <td></td>
 302                                 <td>
 303                                         <textarea cols="50" rows="10" name="TERMS">$terms</textarea>
 304                                 </td>
 305                         </tr>
 306
 307                         <tr>
 308                                 <td>$Lang::tr{'Captive client session expiry time'}</td>
 309                                 <td>
 310                                         <select name="SESSION_TIME">
 311                                                 <option value="0"        $selected{'SESSION_TIME'}{'0'}>- $Lang::tr{'unlimited'} -</option>
 312                                                 <option value="3600"     $selected{'SESSION_TIME'}{'3600'}>$Lang::tr{'one hour'}</option>
 313                                                 <option value="86400"    $selected{'SESSION_TIME'}{'86400'}>$Lang::tr{'24 hours'}</option>
 314                                                 <option value="604800"   $selected{'SESSION_TIME'}{'604800'}>$Lang::tr{'one week'}</option>
 315                                                 <option value="18144000" $selected{'SESSION_TIME'}{'18144000'}>$Lang::tr{'one month'}</option>
 316                                         </select>
 317                                 </td>
 318                         </tr>
 319 END
 320         }
 321
 322         print<<END;
 323                 <tr>
 324                         <td colspan="2">
 325                                 <br>
 326                                 <strong>$Lang::tr{'Captive branding'}</strong>
 327                         </td>
 328                 </tr>
 329                 <tr>
 330                         <td>
 331                                 $Lang::tr{'Captive title'}
 332                         </td>
 333                         <td>
 334                                 <input type='text' name='TITLE' value="$settings{'TITLE'}" size='40'>
 335                         </td>
 336                 </tr>
 337                 <tr>
 338                         <td>$Lang::tr{'Captive brand color'}</td>
 339                         <td>
 340                                 <input type="color" name="COLOR" value="$settings{'COLOR'}">
 341                         </td>
 342                 </tr>
 343 END
 344
 345         # Logo Upload
 346         print <<END;
 347                 <tr>
 348                         <td>
 349                                 $Lang::tr{'Captive logo_upload'}
 350                                 <br>
 351                                 $Lang::tr{'Captive logo_upload1'}
 352                         </td>
 353                         <td>
 354                                 <input type="file" name="logo">
 355                         </td>
 356                 </tr>
 357 END
 358
 359         if (-e $logo) {
 360                 print <<END;
 361                         <tr>
 362                                 <td>$Lang::tr{'Captive logo uploaded'}</td>
 363                                 <td>$Lang::tr{'yes'}</td>
 364                         </tr>
 365 END
 366         }
 367
 368         print <<END;
 369                 <tr>
 370                         <td></td>
 371                         <td align='right'>
 372                                 <input type='submit' name='ACTION' value="$Lang::tr{'save'}"/>
 373                         </td>
 374                 </tr>
 375         </table></form>
 376 END
 377
 378         &Header::closebox();
 379
 380         #if settings is set to use coupons, the coupon part has to be displayed
 381         if ($settings{'AUTH'} eq 'COUPON'){
 382                 &coupons();
 383         }else{
 384                 #otherwise we show the licensepart
 385                 &show_license_connections();
 386         }
 387 }
 388
 389 sub gencode(){
 390         #generate a random code only letters from A-Z except 'O'  and 0-9
 391         my @chars = ("A".."N", "P".."Z", "0".."9");
 392         my $randomstring;
 393         $randomstring .= $chars[rand @chars] for 1..8;
 394         return $randomstring;
 395 }
 396
 397 sub coupons() {
 398         &Header::openbox('100%', 'left', $Lang::tr{'Captive generate coupon'});
 399         print "<form method='post' action='$ENV{'SCRIPT_NAME'}'>";
 400         print "<table border='0' width='100%'>";
 401         print "<tr><td width='30%'><br>$Lang::tr{'Captive vouchervalid'}</td><td width='70%'><br>";
 402
 403                 print "<table class='tbl' border='0' width='100%'>";
 404                 print "<th>$Lang::tr{'hours'}</th><th>$Lang::tr{'days'}</th><th>$Lang::tr{'weeks'}</th><th>$Lang::tr{'months'}</th><th></th><th></th>";
 405
 406                 #print hour-dropdownbox
 407                 my $hrs=3600;
 408                 print "<tr height='40px'><td><select name='EXP_HOUR' style='width:8em;'>";
 409                 print "<option value='0' ";
 410                 print " selected='selected'" if ($settings{'EXP_HOUR'} eq '0');
 411                 print ">--</option>";
 412                 for (my $i = 1; $i<25; $i++){
 413                         my $exp_sec = $i * $hrs;
 414                         print "<option value='$exp_sec' ";
 415                         print " selected='selected'" if ($settings{'EXP_HOUR'} eq $exp_sec);
 416                         print ">$i</option>";
 417                 }
 418                 print "</td><td>";
 419
 420                 #print day-dropdownbox
 421                 my $days=3600*24;
 422                 print "<select name='EXP_DAY' style='width:8em;'>";
 423                 print "<option value='0' ";
 424                 print " selected='selected'" if ($settings{'EXP_DAY'} eq '0');
 425                 print ">--</option>";
 426                 for (my $i = 1; $i<8; $i++){
 427                         my $exp_sec = $i * $days;
 428                         print "<option value='$exp_sec' ";
 429                         print " selected='selected'" if ($settings{'EXP_DAY'} eq $exp_sec);
 430                         print ">$i</option>";
 431                 }
 432                 print "</td><td>";
 433
 434                 #print week-dropdownbox
 435                 my $week=3600*24*7;
 436                 print "<select name='EXP_WEEK' style='width:8em;'>";
 437                 print "<option value='0' ";
 438                 print " selected='selected'" if ($settings{'EXP_WEEK'} eq '0');
 439                 print ">--</option>";
 440                 for (my $i = 1; $i<5; $i++){
 441                         my $exp_sec = $i * $week;
 442                         print "<option value='$exp_sec' ";
 443                         print " selected='selected'" if ($settings{'EXP_WEEK'} eq $exp_sec);
 444                         print ">$i</option>";
 445                 }
 446                 print "</td><td>";
 447
 448                 #print month-dropdownbox
 449                 my $month=3600*24*30;
 450                 print "<select name='EXP_MONTH' style='width:8em;'>";
 451                 print "<option value='0' ";
 452                 print " selected='selected'" if ($settings{'EXP_MONTH'} eq '0');
 453                 print ">--</option>";
 454                 for (my $i = 1; $i<13; $i++){
 455                         my $exp_sec = $i * $month;
 456                         print "<option value='$exp_sec' ";
 457                         print " selected='selected'" if ($settings{'EXP_MONTH'} eq $exp_sec);
 458                         print ">$i</option>";
 459                 }
 460                 print "</td>";
 461                 print "<td>&nbsp;&nbsp;&nbsp;<input type='checkbox' name='UNLIMITED' $checked{'UNLIMITED'}{'on'} /></td><td>&nbsp;<b>$Lang::tr{'Captive nolimit'}</b></td>";
 462                 print "</tr></table>";
 463         print "</td></tr>";
 464         print "<tr><td><br>$Lang::tr{'remark'}</td><td><br><input type='text' style='width: 98%;' name='REMARK'  align='left'></td></tr>";
 465         print "<tr><td>&nbsp</td><td></td></tr></table><br><br>";
 466         $cgiparams{'CODE'} = &gencode();
 467         print "<div align='right'><input type='submit' name='ACTION' value='$Lang::tr{'Captive generate coupon'}'><input type='hidden' name='CODE' value='$cgiparams{'CODE'}'></form></div>";
 468
 469         &Header::closebox();
 470
 471         # Show all coupons if exist
 472         if (! -z $coupons) {
 473                 &show_coupons();
 474         }
 475
 476         if (! -z $clients) {
 477                 &show_clients();
 478         }
 479 }
 480
 481 sub show_license_connections(){
 482         #if there are active clients, show the box with active connections
 483         return if ( -z $clients || ! -f $clients );
 484         my $count=0;
 485         my $col;
 486         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 487 print<<END
 488                 <center><table class='tbl'>
 489                 <tr>
 490                         <th align='center' width='15%'>$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>
 491 END
 492 ;
 493         #read all clients from hash and show table
 494         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 495         foreach my $key (keys %clientshash){
 496                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 497                 my $endtime;
 498                 if ($clientshash{$key}[3] eq '0'){
 499                         $endtime=$Lang::tr{'Captive nolimit'};
 500                 }else{
 501                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 502                 }
 503
 504                 if ($count % 2){
 505                         print" <tr>";
 506                         $col="bgcolor='$color{'color20'}'";
 507                 }else{
 508                         $col="bgcolor='$color{'color22'}'";
 509                         print" <tr>";
 510                 }
 511                 print "<td $col><center>$clientshash{$key}[4]</td><td $col><center>$starttime ";
 512                 print "</center></td><td $col><center>$endtime ";
 513                 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>";
 514                 $count++;
 515         }
 516
 517         print "</table>";
 518         &Header::closebox();
 519 }
 520
 521 sub show_coupons() {
 522         #if there are already generated but unsused coupons, print a table
 523         my $count=0;
 524         my $col;
 525         &Header::openbox('100%', 'left', $Lang::tr{'Captive vout'});
 526         print<<END
 527                 <center><table class='tbl' border='0'>
 528                 <tr>
 529                         <th align='center' width='15%'>$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>
 530 END
 531 ;
 532         &General::readhasharray($coupons, \%couponhash) if (-e $coupons);
 533         foreach my $key (keys %couponhash)
 534         {
 535                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($couponhash{$key}[0]));
 536                 my $endtime;
 537                 if ($couponhash{$key}[2] eq '0'){
 538                         $endtime=$Lang::tr{'Captive nolimit'};
 539                 }else{
 540                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime(time()+$couponhash{$key}[2]));
 541                 }
 542
 543                 if ($count % 2){
 544                         print" <tr>";
 545                         $col="bgcolor='$color{'color20'}'";
 546                 }else{
 547                         $col="bgcolor='$color{'color22'}'";
 548                         print" <tr>";
 549                 }
 550
 551                 print "<td $col><center><b>$couponhash{$key}[1]</b></td>";
 552                 print "<td $col><center>$starttime</td>";
 553                 print "<td $col><center>$endtime</td>";
 554                 print "<td $col align='center'>$couponhash{$key}[3]</td>";
 555                 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>";
 556                 $count++;
 557         }
 558
 559         print "</table>";
 560         &Header::closebox();
 561 }
 562
 563 sub show_clients() {
 564         #if there are active clients which use coupons show table
 565         return if ( -z $clients || ! -f $clients );
 566         my $count=0;
 567         my $col;
 568         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 569 print<<END
 570         <center><table class='tbl' width='100%'>
 571                 <tr>
 572                         <th align='center' width='15%'>$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%'>$Lang::tr{'delete'}</th></tr>
 573 END
 574 ;
 575         &General::readhasharray($clients, \%clientshash) if (-e $clients);
 576         foreach my $key (keys %clientshash)
 577         {
 578                 #calculate time from clientshash (starttime)
 579                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 580                 #calculate endtime from clientshash
 581                 my $endtime;
 582                 if ($clientshash{$key}[3] eq '0'){
 583                         $endtime=$Lang::tr{'Captive nolimit'};
 584                 }else{
 585                         $endtime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 586                 }
 587
 588                         if ($count % 2){
 589                                 print" <tr>";
 590                                 $col="bgcolor='$color{'color20'}'";
 591                         }else{
 592                                 $col="bgcolor='$color{'color22'}'";
 593                                 print" <tr>";
 594                         }
 595
 596                         print "<td $col><center><b>$clientshash{$key}[4]</b></td><td $col><center>$starttime ";
 597                         print "</center></td><td $col><center>$endtime</center></td><td $col><center>$clientshash{$key}[0]</td><td $col><center>$clientshash{$key}[5]</center>";
 598                         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>";
 599                         $count++;
 600         }
 601
 602         print "</table>";
 603         &Header::closebox();
 604 }
 605
 606 sub validremark
 607 {
 608         # Checks a hostname against RFC1035
 609         my $remark = $_[0];
 610         # Each part should be at least two characters in length
 611         # but no more than 63 characters
 612         if (length ($remark) < 1 || length ($remark) > 255) {
 613                 return 0;}
 614         # Only valid characters are a-z, A-Z, 0-9 and -
 615         if ($remark !~ /^[a-zäöüA-ZÖÄÜ0-9-.:;\|_()\/\s]*$/) {
 616                 return 0;}
 617         # First character can only be a letter or a digit
 618         if (substr ($remark, 0, 1) !~ /^[a-zäöüA-ZÖÄÜ0-9]*$/) {
 619                 return 0;}
 620         # Last character can only be a letter or a digit
 621         if (substr ($remark, -1, 1) !~ /^[a-zöäüA-ZÖÄÜ0-9.:;_)]*$/) {
 622                 return 0;}
 623         return 1;
 624 }
 625
 626 sub pngsize {
 627         my $Buffer = shift;
 628         my ($width,$height) = ( undef, undef );
 629
 630         if ($Buffer =~ /IHDR(.{8})/) {
 631                 my $PNG = $1;
 632                 ($width,$height) = unpack( "NN", $PNG );
 633         } else {
 634                 $width="invalid";
 635                 $height= "invalid";
 636         };
 637         return ($width,$height);
 638 }
 639
 640 sub error{
 641         #if an errormessage exits, show a box with errormessage
 642         if ($errormessage) {
 643                 &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 644                 print "<class name='base'>$errormessage\n";
 645                 print "&nbsp;</class>\n";
 646                 &Header::closebox();
 647         }
 648 }
 649
 650 &Header::closebigbox();
 651 &Header::closepage();