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 %settings=();
  35 my %mainsettings;
  36 my %color;
  37 my %cgiparams=();
  38 my %netsettings=();
  39 my %checked=();
  40 my $errormessage='';
  41 my $voucherout="${General::swroot}/captive/voucher_out";
  42 my $clients="${General::swroot}/captive/clients";
  43 my %voucherhash=();
  44 my %clientshash=();
  45 my $settingsfile="${General::swroot}/captive/settings";
  46 my $logopath = "/srv/web/ipfire/html/captive/logo";
  47 unless (-e $settingsfile)       { system("touch $settingsfile"); }
  48 unless (-e $voucherout) { system("touch $voucherout"); }
  49
  50 &Header::getcgihash(\%cgiparams);
  51
  52 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  53 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  54 &General::readhash("$settingsfile", \%settings) if(-f $settingsfile);
  55 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  56
  57 &Header::showhttpheaders();
  58
  59 #actions
  60 if ($cgiparams{'ACTION'} eq "$Lang::tr{'save'}"){
  61         my $file = $cgiparams{'uploaded_file'};
  62         if ($file){
  63                 #Check if extension is png
  64                 chomp $file;
  65                 my ($name, $path, $ext) = fileparse($file, qr/\.[^.]*$/);
  66                 if ($ext ne ".png"){
  67                         $errormessage=$Lang::tr{'Captive wrong ext'};
  68                 }
  69         }
  70
  71         $settings{'ENABLE_GREEN'}               = $cgiparams{'ENABLE_GREEN'};
  72         $settings{'ENABLE_BLUE'}                = $cgiparams{'ENABLE_BLUE'};
  73         $settings{'AUTH'}                               = $cgiparams{'AUTH'};
  74         $settings{'TITLE'}                              = $cgiparams{'TITLE'};
  75         $settings{'UNLIMITED'}                  = $cgiparams{'UNLIMITED'};
  76         $settings{'COLOR'}                      = $cgiparams{'COLOR'};
  77
  78         if (!$errormessage){
  79                 #Check if we need to upload a new logo
  80                 if($file){
  81                         #Save File
  82                         my ($filehandle) = CGI::upload('uploaded_file');
  83                         open (UPLOADFILE, ">$logopath/logo.png");
  84                         binmode $filehandle;
  85                         while ( <$filehandle> ) {
  86                                 print UPLOADFILE;
  87                         }
  88                         close (UPLOADFILE);
  89
  90                         #Open file to check if dimensions are within rang
  91                         open (PNG , "<$logopath/logo.png");
  92                         local $/;
  93                         my $PNG1=<PNG>;
  94                         close(PNG);
  95                         my ($width,$height)=&pngsize($PNG1);
  96                         if($width > 1920 || $height > 800 || $width < 1280 || $height < 400){
  97                                 $errormessage.="$Lang::tr{'Captive invalid logosize'} <br>Filedimensions width: $width  height: $height ";
  98                                 unlink("$logopath/logo.png");
  99                         }
 100                 }
 101
 102                 &General::writehash("$settingsfile", \%settings);
 103
 104                 #write Licensetext if defined
 105                 if ($cgiparams{'AGB'}){
 106                         $cgiparams{'AGB'} = &Header::escape($cgiparams{'AGB'});
 107                         open( FH, ">:utf8", "/var/ipfire/captive/agb.txt" ) or die("$!");
 108                         print FH $cgiparams{'AGB'};
 109                         close( FH );
 110                         $cgiparams{'AGB'}="";
 111                 }
 112                 #execute binary to reload firewall rules
 113                 system("/usr/local/bin/captivectrl");
 114
 115                 if ($cgiparams{'ENABLE_BLUE'} eq 'on'){
 116                                 system("/usr/local/bin/wirelessctrl");
 117                 }
 118         }
 119 }
 120
 121 if ($cgiparams{'ACTION'} eq "$Lang::tr{'Captive genvoucher'}"){
 122         #generates a voucher and writes it to /var/ipfire/voucher_out
 123
 124         #calculate expiredate
 125         my $expire;
 126         if ($settings{'UNLIMITED'} eq 'on'){
 127                 $expire = $Lang::tr{'Captive nolimit'};
 128         }else{
 129                 $settings{'EXPIRE'} = $cgiparams{'EXP_HOUR'}+$cgiparams{'EXP_DAY'}+$cgiparams{'EXP_WEEK'}+$cgiparams{'EXP_MONTH'};
 130                 $expire = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime(time()+$settings{'EXPIRE'}));
 131     }
 132
 133         #Check Expiretime
 134         if($cgiparams{'EXP_HOUR'}+$cgiparams{'EXP_DAY'}+$cgiparams{'EXP_WEEK'}+$cgiparams{'EXP_MONTH'} == 0 && $cgiparams{'UNLIMITED'} == ''){
 135                 $errormessage=$Lang::tr{'Captive noexpiretime'};
 136         }
 137         #check if we already have a voucher with same code
 138         &General::readhasharray("$voucherout", \%voucherhash);
 139         foreach my $key (keys %voucherhash) {
 140                 if($voucherhash{$key}[1] eq $cgiparams{'CODE'}){
 141                         $errormessage=$Lang::tr{'Captive err doublevoucher'};
 142                         last;
 143                 }
 144         }
 145
 146         #check valid remark
 147         if ($cgiparams{'REMARK'} ne '' && !&validremark($cgiparams{'REMARK'})){
 148                 $errormessage=$Lang::tr{'fwhost err remark'};
 149         }
 150
 151         #if no error detected, write to disk
 152         if (!$errormessage){
 153                 my $date=time(); #seconds in utc
 154
 155                 #first get new key from hash
 156                 my $key=&General::findhasharraykey (\%voucherhash);
 157                 #initialize all fields with ''
 158                 foreach my $i (0 .. 3) { $voucherhash{$key}[$i] = "";}
 159                 #define fields
 160                 $voucherhash{$key}[0] = $date;
 161                 $voucherhash{$key}[1] = $cgiparams{'CODE'};
 162                 $voucherhash{$key}[2] = $settings{'EXPIRE'};
 163                 $voucherhash{$key}[3] = $cgiparams{'REMARK'};
 164                 #write values to disk
 165                 &General::writehasharray("$voucherout", \%voucherhash);
 166
 167                 #now prepare log entry, get expiring date for voucher and decode remark for logfile
 168                 my $expdate=localtime(time()+$voucherhash{$key}[3]);
 169                 my $rem=HTML::Entities::decode_entities($voucherhash{$key}[4]);
 170
 171                 #write logfile entry
 172                 &General::log("Captive", "Generated new voucher $voucherhash{$key}[1] $voucherhash{$key}[2] hours valid expires on $expdate remark $rem");
 173         }
 174 }
 175
 176 if ($cgiparams{'ACTION'} eq 'delvoucherout'){
 177         #deletes an already generated but unused voucher
 178
 179         #read all generated vouchers
 180         &General::readhasharray("$voucherout", \%voucherhash);
 181         foreach my $key (keys %voucherhash) {
 182                 if($cgiparams{'key'} eq $voucherhash{$key}[0]){
 183                         #write logenty with decoded remark
 184                         my $rem=HTML::Entities::decode_entities($voucherhash{$key}[4]);
 185                         &General::log("Captive", "Delete unused voucher $voucherhash{$key}[1] $voucherhash{$key}[2] hours valid expires on $voucherhash{$key}[3] remark $rem");
 186                         #delete line from hash
 187                         delete $voucherhash{$key};
 188                         last;
 189                 }
 190         }
 191         #write back hash
 192         &General::writehasharray("$voucherout", \%voucherhash);
 193 }
 194
 195 if ($cgiparams{'ACTION'} eq 'delvoucherinuse'){
 196         #delete voucher and connection in use
 197
 198         #read all active clients
 199         &General::readhasharray("$clients", \%clientshash);
 200         foreach my $key (keys %clientshash) {
 201                 if($cgiparams{'key'} eq $clientshash{$key}[0]){
 202                         #prepare log entry with decoded remark
 203                         my $rem=HTML::Entities::decode_entities($clientshash{$key}[7]);
 204                         #write logentry
 205                         &General::log("Captive", "Delete voucher in use $clientshash{$key}[1] $clientshash{$key}[2] hours valid expires on $clientshash{$key}[3] remark $rem - Connection will be terminated");
 206                         #delete line from hash
 207                         delete $clientshash{$key};
 208                         last;
 209                 }
 210         }
 211         #write back hash
 212         &General::writehasharray("$clients", \%clientshash);
 213         #reload firewallrules to kill connection of client
 214         system("/usr/local/bin/captivectrl");
 215 }
 216
 217 #open webpage, print header and open box
 218 &Header::openpage($Lang::tr{'Captive menu'}, 1, '');
 219 &Header::openbigbox();
 220
 221 #call error() to see if we have to print an errormessage on website
 222 &error();
 223
 224 #call config() to display the configuration box
 225 &config();
 226
 227 sub getagb(){
 228         #open textfile from /var/ipfire/captive/agb.txt
 229         open( my $handle, "<:utf8", "/var/ipfire/captive/agb.txt" ) or die("$!");
 230                 while(<$handle>){
 231                         #read line by line and print on screen
 232                         $cgiparams{'AGB'}.= HTML::Entities::decode_entities($_);
 233                 }
 234         close( $handle );
 235 }
 236
 237 sub config(){
 238         #prints the config box on the website
 239         &Header::openbox('100%', 'left', $Lang::tr{'Captive config'});
 240         print <<END
 241                 <form method='post' action='$ENV{'SCRIPT_NAME'}' enctype="multipart/form-data">\n
 242                 <table width='100%' border="0">
 243                 <tr>
 244 END
 245 ;
 246         #check which parameters have to be enabled (from settings file)
 247         $checked{'ENABLE_GREEN'}{'off'} = '';
 248         $checked{'ENABLE_GREEN'}{'on'} = '';
 249         $checked{'ENABLE_GREEN'}{$settings{'ENABLE_GREEN'}} = "checked='checked'";
 250
 251         $checked{'ENABLE_BLUE'}{'off'} = '';
 252         $checked{'ENABLE_BLUE'}{'on'} = '';
 253         $checked{'ENABLE_BLUE'}{$settings{'ENABLE_BLUE'}} = "checked='checked'";
 254
 255         $checked{'UNLIMITED'}{'off'} = '';
 256         $checked{'UNLIMITED'}{'on'} = '';
 257         $checked{'UNLIMITED'}{$settings{'UNLIMITED'}} = "checked='checked'";
 258
 259         if ($netsettings{'GREEN_DEV'}){
 260                 print "<td width='30%'>$Lang::tr{'Captive active on'} <font color='$Header::colourgreen'>Green</font></td><td><input type='checkbox' name='ENABLE_GREEN' $checked{'ENABLE_GREEN'}{'on'} /></td></tr>";
 261         }
 262         if ($netsettings{'BLUE_DEV'}){
 263                 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>";
 264         }
 265
 266         print<<END
 267                 </tr>
 268                 <tr>
 269                 <td><br>
 270                         $Lang::tr{'Captive title'}
 271                 </td>
 272                 <td><br>
 273                         <input type='text' name='TITLE' value="$settings{'TITLE'}" size='40'>
 274                 </td>
 275                 </tr>
 276 END
 277 ;
 278
 279 print<<END
 280                 <tr>
 281                         <td><br>
 282                                 $Lang::tr{'Captive authentication'}
 283                         </td>
 284                         <td><br>
 285                                 <select name='AUTH' style='width:8em;'>
 286 END
 287 ;
 288         print "<option value='LICENSE' ";
 289         print " selected='selected'" if ($settings{'AUTH'} eq 'LICENSE');
 290         print ">$Lang::tr{'Captive auth_lic'}</option>";
 291
 292         print "<option value='VOUCHER' ";
 293         print " selected='selected'" if ($settings{'AUTH'} eq 'VOUCHER');
 294         print ">$Lang::tr{'Captive auth_vou'}</option>";
 295
 296         print<<END
 297                                 </select>
 298                         </td>
 299                 </tr>
 300 END
 301 ;
 302         if ($settings{'AUTH'} eq 'LICENSE'){    &agbbox(); };
 303
 304         #Logo Upload
 305         print "<tr><td><br>$Lang::tr{'Captive logo_upload'}<br>$Lang::tr{'Captive logo_upload1'}</td><td><br><INPUT TYPE='file' NAME='uploaded_file' SIZE=30 MAXLENGTH=80></td></tr><tr>";
 306         #Show Logo in webinterface with 1/2 size if set
 307         if (-f "$logopath/logo.png"){
 308                 print"<td>$Lang::tr{'Captive logo_set'}</td>";
 309                 print"<td><img src='/captive/logo/logo.png' alt='$logopath/logo.png' width='25%' height='25%' /></td></tr>";
 310         }else{
 311                 print"<td>$Lang::tr{'Captive logo_set'}</td>";
 312                 print"<td><br>$Lang::tr{'no'}</td></tr>";
 313         }
 314 print<<END
 315                 <tr>
 316                         <td>$Lang::tr{'Captive brand color'}</td>
 317                         <td>
 318                                 <input type="color" name="COLOR" value="$settings{'COLOR'}">
 319                         </td>
 320                 </tr>
 321
 322                 <tr>
 323                         <td>
 324                         </td>
 325                         <td align='right'>
 326                         <input type='submit' name='ACTION' value="$Lang::tr{'save'}"/>
 327                         </td>
 328                 </tr>
 329                 </table>
 330                 <br><br>
 331 END
 332 ;
 333         print "</form>";
 334
 335         &Header::closebox();
 336
 337         #if settings is set to use vouchers, the voucher part has to be displayed
 338         if ($settings{'AUTH'} eq 'VOUCHER'){
 339                 &voucher();
 340         }else{
 341                 #otherwise we show the licensepart
 342                 &show_license_connections();
 343         }
 344 }
 345
 346 sub agbbox(){
 347         &getagb();
 348 print<<END
 349         <tr>
 350                 <td>
 351                         License agreement
 352                 </td>
 353                 <td>
 354                         <br>
 355                         <textarea cols="50" rows="10" name="AGB">$cgiparams{'AGB'}</textarea>
 356                 </td>
 357         </tr>
 358 END
 359 ;
 360 }
 361
 362 sub gencode(){
 363         #generate a random code only letters from A-Z except 'O'  and 0-9
 364         my @chars = ("A".."N", "P".."Z", "0".."9");
 365         my $randomstring;
 366         $randomstring .= $chars[rand @chars] for 1..8;
 367         return $randomstring;
 368 }
 369
 370 sub voucher(){
 371         #show voucher part
 372         &Header::openbox('100%', 'left', $Lang::tr{'Captive genvoucher'});
 373         print "<form method='post' action='$ENV{'SCRIPT_NAME'}'>";
 374         print "<table border='0' width='100%'>";
 375         print "<tr><td width='30%'><br>$Lang::tr{'Captive vouchervalid'}</td><td width='70%'><br>";
 376
 377                 print "<table class='tbl' border='0' width='100%'>";
 378                 print "<th>$Lang::tr{'hours'}</th><th>$Lang::tr{'days'}</th><th>$Lang::tr{'weeks'}</th><th>$Lang::tr{'months'}</th><th></th><th></th>";
 379
 380                 #print hour-dropdownbox
 381                 my $hrs=3600;
 382                 print "<tr height='40px'><td><select name='EXP_HOUR' style='width:8em;'>";
 383                 print "<option value='0' ";
 384                 print " selected='selected'" if ($settings{'EXP_HOUR'} eq '0');
 385                 print ">--</option>";
 386                 for (my $i = 1; $i<25; $i++){
 387                         my $exp_sec = $i * $hrs;
 388                         print "<option value='$exp_sec' ";
 389                         print " selected='selected'" if ($settings{'EXP_HOUR'} eq $exp_sec);
 390                         print ">$i</option>";
 391                 }
 392                 print "</td><td>";
 393
 394                 #print day-dropdownbox
 395                 my $days=3600*24;
 396                 print "<select name='EXP_DAY' style='width:8em;'>";
 397                 print "<option value='0' ";
 398                 print " selected='selected'" if ($settings{'EXP_DAY'} eq '0');
 399                 print ">--</option>";
 400                 for (my $i = 1; $i<8; $i++){
 401                         my $exp_sec = $i * $days;
 402                         print "<option value='$exp_sec' ";
 403                         print " selected='selected'" if ($settings{'EXP_DAY'} eq $exp_sec);
 404                         print ">$i</option>";
 405                 }
 406                 print "</td><td>";
 407
 408                 #print week-dropdownbox
 409                 my $week=3600*24*7;
 410                 print "<select name='EXP_WEEK' style='width:8em;'>";
 411                 print "<option value='0' ";
 412                 print " selected='selected'" if ($settings{'EXP_WEEK'} eq '0');
 413                 print ">--</option>";
 414                 for (my $i = 1; $i<5; $i++){
 415                         my $exp_sec = $i * $week;
 416                         print "<option value='$exp_sec' ";
 417                         print " selected='selected'" if ($settings{'EXP_WEEK'} eq $exp_sec);
 418                         print ">$i</option>";
 419                 }
 420                 print "</td><td>";
 421
 422                 #print month-dropdownbox
 423                 my $month=3600*24*30;
 424                 print "<select name='EXP_MONTH' style='width:8em;'>";
 425                 print "<option value='0' ";
 426                 print " selected='selected'" if ($settings{'EXP_MONTH'} eq '0');
 427                 print ">--</option>";
 428                 for (my $i = 1; $i<13; $i++){
 429                         my $exp_sec = $i * $month;
 430                         print "<option value='$exp_sec' ";
 431                         print " selected='selected'" if ($settings{'EXP_MONTH'} eq $exp_sec);
 432                         print ">$i</option>";
 433                 }
 434                 print "</td>";
 435                 print "<td>&nbsp;&nbsp;&nbsp;<input type='checkbox' name='UNLIMITED' $checked{'UNLIMITED'}{'on'} /></td><td>&nbsp;<b>$Lang::tr{'Captive nolimit'}</b></td>";
 436                 print "</tr></table>";
 437         print "</td></tr>";
 438         print "<tr><td><br>$Lang::tr{'remark'}</td><td><br><input type='text' style='width: 98%;' name='REMARK'  align='left'></td></tr>";
 439         print "<tr><td>&nbsp</td><td></td></tr></table><br><br>";
 440         $cgiparams{'CODE'} = &gencode();
 441         print "<div align='right'><input type='submit' name='ACTION' value='$Lang::tr{'Captive genvoucher'}'><input type='hidden' name='CODE' value='$cgiparams{'CODE'}'></form></div>";
 442
 443         &Header::closebox();
 444         if (! -z $voucherout) { &show_voucher_out();}
 445         if (! -z $clients) { &show_voucher_in_use();}
 446 }
 447
 448 sub show_license_connections(){
 449         #if there are active clients, show the box with active connections
 450         return if ( -z $clients || ! -f $clients );
 451         my $count=0;
 452         my $col;
 453         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 454 print<<END
 455                 <center><table class='tbl'>
 456                 <tr>
 457                         <th align='center' width='15%'>$Lang::tr{'Captive voucher'}</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>
 458 END
 459 ;
 460         #read all clients from hash and show table
 461         &General::readhasharray("$clients", \%clientshash);
 462         foreach my $key (keys %clientshash){
 463                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 464                 my $endtime;
 465                 if ($clientshash{$key}[3] eq '0'){
 466                         $endtime=$Lang::tr{'Captive nolimit'};
 467                 }else{
 468                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 469                 }
 470
 471                 if ($count % 2){
 472                         print" <tr>";
 473                         $col="bgcolor='$color{'color20'}'";
 474                 }else{
 475                         $col="bgcolor='$color{'color22'}'";
 476                         print" <tr>";
 477                 }
 478                 print "<td $col><center>$clientshash{$key}[4]</td><td $col><center>$starttime ";
 479                 print "</center></td><td $col><center>$endtime ";
 480                 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='$Lang::tr{'delete'}' /><form method='post'><input type='hidden' name='ACTION' value='delvoucherinuse' /><input type='hidden' name='key' value='$clientshash{$key}[0]' /></form></tr>";
 481                 $count++;
 482         }
 483
 484         print "</table>";
 485         &Header::closebox();
 486 }
 487
 488 sub show_voucher_out(){
 489         #if there are already generated but unsused vouchers, print a table
 490         return if ( -z $voucherout);
 491         my $count=0;
 492         my $col;
 493         &Header::openbox('100%', 'left', $Lang::tr{'Captive vout'});
 494         print<<END
 495                 <center><table class='tbl' border='0'>
 496                 <tr>
 497                         <th align='center' width='15%'>$Lang::tr{'Captive voucher'}</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>
 498 END
 499 ;
 500         &General::readhasharray("$voucherout", \%voucherhash);
 501         foreach my $key (keys %voucherhash)
 502         {
 503                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($voucherhash{$key}[0]));
 504                 my $endtime;
 505                 if ($voucherhash{$key}[2] eq '0'){
 506                         $endtime=$Lang::tr{'Captive nolimit'};
 507                 }else{
 508                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime(time()+$voucherhash{$key}[2]));
 509                 }
 510
 511                 if ($count % 2){
 512                         print" <tr>";
 513                         $col="bgcolor='$color{'color20'}'";
 514                 }else{
 515                         $col="bgcolor='$color{'color22'}'";
 516                         print" <tr>";
 517                 }
 518
 519                 print "<td $col><center><b>$voucherhash{$key}[1]</b></td>";
 520                 print "<td $col><center>$starttime</td>";
 521                 print "<td $col><center>$endtime</td>";
 522                 print "<td $col align='center'>$voucherhash{$key}[3]</td>";
 523                 print "<td $col><form method='post'><center><input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' /><form method='post'><input type='hidden' name='ACTION' value='delvoucherout' /><input type='hidden' name='key' value='$voucherhash{$key}[0]' /></form></tr>";
 524                 $count++;
 525         }
 526
 527         print "</table>";
 528         &Header::closebox();
 529 }
 530
 531 sub show_voucher_in_use(){
 532         #if there are active clients which use vouchers show table
 533         return if ( -z $clients || ! -f $clients );
 534         my $count=0;
 535         my $col;
 536         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 537 print<<END
 538         <center><table class='tbl' width='100%'>
 539                 <tr>
 540                         <th align='center' width='15%'>$Lang::tr{'Captive voucher'}</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%'>$Lang::tr{'delete'}</th></tr>
 541 END
 542 ;
 543         &General::readhasharray("$clients", \%clientshash);
 544         foreach my $key (keys %clientshash)
 545         {
 546                 #calculate time from clientshash (starttime)
 547                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 548                 #calculate endtime from clientshash
 549                 my $endtime;
 550                 if ($clientshash{$key}[3] eq '0'){
 551                         $endtime=$Lang::tr{'Captive nolimit'};
 552                 }else{
 553                         $endtime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 554                 }
 555
 556                         if ($count % 2){
 557                                 print" <tr>";
 558                                 $col="bgcolor='$color{'color20'}'";
 559                         }else{
 560                                 $col="bgcolor='$color{'color22'}'";
 561                                 print" <tr>";
 562                         }
 563
 564                         print "<td $col><center><b>$clientshash{$key}[4]</b></td><td $col><center>$starttime ";
 565                         print "</center></td><td $col><center>$endtime</center></td><td $col><center>$clientshash{$key}[0]</td><td $col><center>$clientshash{$key}[5]</center>";
 566                         print "</td><td $col><form method='post'><center><input type='image' src='/images/delete.gif' align='middle' alt='$Lang::tr{'delete'}' title='$Lang::tr{'delete'}' /><form method='post'><input type='hidden' name='ACTION' value='delvoucherinuse' /><input type='hidden' name='key' value='$clientshash{$key}[0]' /></form></tr>";
 567                         $count++;
 568         }
 569
 570         print "</table>";
 571         &Header::closebox();
 572 }
 573
 574 sub validremark
 575 {
 576         # Checks a hostname against RFC1035
 577         my $remark = $_[0];
 578         # Each part should be at least two characters in length
 579         # but no more than 63 characters
 580         if (length ($remark) < 1 || length ($remark) > 255) {
 581                 return 0;}
 582         # Only valid characters are a-z, A-Z, 0-9 and -
 583         if ($remark !~ /^[a-zäöüA-ZÖÄÜ0-9-.:;\|_()\/\s]*$/) {
 584                 return 0;}
 585         # First character can only be a letter or a digit
 586         if (substr ($remark, 0, 1) !~ /^[a-zäöüA-ZÖÄÜ0-9]*$/) {
 587                 return 0;}
 588         # Last character can only be a letter or a digit
 589         if (substr ($remark, -1, 1) !~ /^[a-zöäüA-ZÖÄÜ0-9.:;_)]*$/) {
 590                 return 0;}
 591         return 1;
 592 }
 593
 594 sub pngsize {
 595         my $Buffer = shift;
 596         my ($width,$height) = ( undef, undef );
 597
 598         if ($Buffer =~ /IHDR(.{8})/) {
 599                 my $PNG = $1;
 600                 ($width,$height) = unpack( "NN", $PNG );
 601         } else {
 602                 $width="invalid";
 603                 $height= "invalid";
 604         };
 605         return ($width,$height);
 606 }
 607
 608 sub error{
 609         #if an errormessage exits, show a box with errormessage
 610         if ($errormessage) {
 611                 &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 612                 print "<class name='base'>$errormessage\n";
 613                 print "&nbsp;</class>\n";
 614                 &Header::closebox();
 615         }
 616 }
 617
 618 &Header::closebigbox();
 619 &Header::closepage();