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 # enable only the following on debugging purpose
  25 #use warnings;
  26 #use CGI::Carp 'fatalsToBrowser';
  27
  28 require '/var/ipfire/general-functions.pl';
  29 require "${General::swroot}/lang.pl";
  30 require "${General::swroot}/header.pl";
  31
  32 my %settings=();
  33 my %mainsettings;
  34 my %color;
  35 my %cgiparams=();
  36 my %netsettings=();
  37 my %checked=();
  38 my $errormessage='';
  39 my $voucherout="${General::swroot}/captive/voucher_out";
  40 my $clients="${General::swroot}/captive/clients";
  41 my %voucherhash=();
  42 my %clientshash=();
  43 my $settingsfile="${General::swroot}/captive/settings";
  44
  45 unless (-e $settingsfile)       { system("touch $settingsfile"); }
  46 unless (-e $voucherout) { system("touch $voucherout"); }
  47
  48 &Header::getcgihash(\%cgiparams);
  49
  50 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  51 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  52 &General::readhash("$settingsfile", \%settings) if(-f $settingsfile);
  53 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  54
  55 &Header::showhttpheaders();
  56
  57 #actions
  58 if ($cgiparams{'ACTION'} eq "$Lang::tr{'save'}"){
  59         #saves the Captiveportal settings to disk
  60         if ($cgiparams{'UNLIMITED'} eq 'on'){
  61                 $cgiparams{'EXP_HOUR'}  = '0';
  62                 $cgiparams{'EXP_DAY'}   = '0';
  63                 $cgiparams{'EXP_WEEK'}  = '0';
  64                 $cgiparams{'EXP_MONTH'} = '0';
  65         }
  66
  67         $settings{'ENABLE_GREEN'}               = $cgiparams{'ENABLE_GREEN'};
  68         $settings{'ENABLE_BLUE'}                = $cgiparams{'ENABLE_BLUE'};
  69         $settings{'AUTH'}                               = $cgiparams{'AUTH'};
  70         $settings{'EXPIRE'}                             = $cgiparams{'EXP_HOUR'}+$cgiparams{'EXP_DAY'}+$cgiparams{'EXP_WEEK'}+$cgiparams{'EXP_MONTH'};
  71         $settings{'EXP_HOUR'}                   = $cgiparams{'EXP_HOUR'};
  72         $settings{'EXP_DAY'}                    = $cgiparams{'EXP_DAY'};
  73         $settings{'EXP_WEEK'}                   = $cgiparams{'EXP_WEEK'};
  74         $settings{'EXP_MONTH'}                  = $cgiparams{'EXP_MONTH'};
  75         $settings{'TITLE'}                              = $cgiparams{'TITLE'};
  76         $settings{'UNLIMITED'}                  = $cgiparams{'UNLIMITED'};
  77         &General::writehash("$settingsfile", \%settings);
  78
  79         #write Licensetext if defined
  80         if ($cgiparams{'AGB'}){
  81                 $cgiparams{'AGB'} = &Header::escape($cgiparams{'AGB'});
  82                 open( FH, ">:utf8", "/var/ipfire/captive/agb.txt" ) or die("$!");
  83                 print FH $cgiparams{'AGB'};
  84                 close( FH );
  85                 $cgiparams{'AGB'}="";
  86         }
  87         #execute binary to reload firewall rules
  88         system("/usr/local/bin/captivectrl");
  89 }
  90
  91 if ($cgiparams{'ACTION'} eq "$Lang::tr{'Captive voucherout'}"){
  92         #generates a voucher and writes it to /var/ipfire/voucher_out
  93
  94         #check if we already have a voucher with same code
  95         &General::readhasharray("$voucherout", \%voucherhash);
  96         foreach my $key (keys %voucherhash) {
  97                 if($voucherhash{$key}[1] eq $cgiparams{'CODE'}){
  98                         $errormessage=$Lang::tr{'Captive err doublevoucher'};
  99                         last;
 100                 }
 101         }
 102
 103         #check valid remark
 104         if ($cgiparams{'REMARK'} ne '' && !&validremark($cgiparams{'REMARK'})){
 105                 $errormessage=$Lang::tr{'fwhost err remark'};
 106         }
 107
 108         #if no error detected, write to disk
 109         if (!$errormessage){
 110                 my $date=time(); #seconds in utc
 111
 112                 #first get new key from hash
 113                 my $key=&General::findhasharraykey (\%voucherhash);
 114                 #initialize all fields with ''
 115                 foreach my $i (0 .. 3) { $voucherhash{$key}[$i] = "";}
 116                 #define fields
 117                 $voucherhash{$key}[0] = $date;
 118                 $voucherhash{$key}[1] = $cgiparams{'CODE'};
 119                 $voucherhash{$key}[2] = $settings{'EXPIRE'};
 120                 $voucherhash{$key}[3] = $cgiparams{'REMARK'};
 121                 #write values to disk
 122                 &General::writehasharray("$voucherout", \%voucherhash);
 123
 124                 #now prepare log entry, get expiring date for voucher and decode remark for logfile
 125                 my $expdate=localtime(time()+$voucherhash{$key}[3]);
 126                 my $rem=HTML::Entities::decode_entities($voucherhash{$key}[4]);
 127
 128                 #write logfile entry
 129                 &General::log("Captive", "Generated new voucher $voucherhash{$key}[1] $voucherhash{$key}[2] hours valid expires on $expdate remark $rem");
 130         }
 131 }
 132
 133 if ($cgiparams{'ACTION'} eq 'delvoucherout'){
 134         #deletes an already generated but unused voucher
 135
 136         #read all generated vouchers
 137         &General::readhasharray("$voucherout", \%voucherhash);
 138         foreach my $key (keys %voucherhash) {
 139                 if($cgiparams{'key'} eq $voucherhash{$key}[0]){
 140                         #write logenty with decoded remark
 141                         my $rem=HTML::Entities::decode_entities($voucherhash{$key}[4]);
 142                         &General::log("Captive", "Delete unused voucher $voucherhash{$key}[1] $voucherhash{$key}[2] hours valid expires on $voucherhash{$key}[3] remark $rem");
 143                         #delete line from hash
 144                         delete $voucherhash{$key};
 145                         last;
 146                 }
 147         }
 148         #write back hash
 149         &General::writehasharray("$voucherout", \%voucherhash);
 150 }
 151
 152 if ($cgiparams{'ACTION'} eq 'delvoucherinuse'){
 153         #delete voucher and connection in use
 154
 155         #read all active clients
 156         &General::readhasharray("$clients", \%clientshash);
 157         foreach my $key (keys %clientshash) {
 158                 if($cgiparams{'key'} eq $clientshash{$key}[0]){
 159                         #prepare log entry with decoded remark
 160                         my $rem=HTML::Entities::decode_entities($clientshash{$key}[7]);
 161                         #write logentry
 162                         &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");
 163                         #delete line from hash
 164                         delete $clientshash{$key};
 165                         last;
 166                 }
 167         }
 168         #write back hash
 169         &General::writehasharray("$clients", \%clientshash);
 170         #reload firewallrules to kill connection of client
 171         system("/usr/local/bin/captivectrl");
 172 }
 173
 174 #open webpage, print header and open box
 175 &Header::openpage($Lang::tr{'Captive menu'}, 1, '');
 176 &Header::openbigbox();
 177
 178 #call error() to see if we have to print an errormessage on website
 179 &error();
 180
 181 #call config() to display the configuration box
 182 &config();
 183
 184 sub getagb(){
 185         #open textfile from /var/ipfire/captive/agb.txt
 186         open( my $handle, "<:utf8", "/var/ipfire/captive/agb.txt" ) or die("$!");
 187                 while(<$handle>){
 188                         #read line by line and print on screen
 189                         $cgiparams{'AGB'}.= HTML::Entities::decode_entities($_);
 190                 }
 191         close( $handle );
 192 }
 193
 194 sub config(){
 195         #prints the config box on the website
 196         &Header::openbox('100%', 'left', $Lang::tr{'Captive config'});
 197         print <<END
 198                 <form method='post' action='$ENV{'SCRIPT_NAME'}'>\n
 199                 <table width='100%' border="0">
 200                 <tr>
 201 END
 202 ;
 203         #check which parameters have to be enabled (from settings file)
 204         $checked{'ENABLE_GREEN'}{'off'} = '';
 205         $checked{'ENABLE_GREEN'}{'on'} = '';
 206         $checked{'ENABLE_GREEN'}{$settings{'ENABLE_GREEN'}} = "checked='checked'";
 207
 208         $checked{'ENABLE_BLUE'}{'off'} = '';
 209         $checked{'ENABLE_BLUE'}{'on'} = '';
 210         $checked{'ENABLE_BLUE'}{$settings{'ENABLE_BLUE'}} = "checked='checked'";
 211
 212         $checked{'UNLIMITED'}{'off'} = '';
 213         $checked{'UNLIMITED'}{'on'} = '';
 214         $checked{'UNLIMITED'}{$settings{'UNLIMITED'}} = "checked='checked'";
 215
 216         if ($netsettings{'GREEN_DEV'}){
 217                 print "<td width='30%'>$Lang::tr{'Captive active on'} <font color='$Header::colourgreen'>Green</font></td><td><input type='checkbox' name='ENABLE_GREEN' $checked{'ENABLE_GREEN'}{'on'} /></td></tr>";
 218         }
 219         if ($netsettings{'BLUE_DEV'}){
 220                 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>";
 221         }
 222
 223         print<<END
 224                 </tr>
 225                 <tr>
 226                 <td><br>
 227                         $Lang::tr{'Captive title'}
 228                 </td>
 229                 <td><br>
 230                         <input type='text' name='TITLE' value="$settings{'TITLE'}" size='40'>
 231                 </td>
 232                 </tr>
 233 END
 234 ;
 235
 236 print<<END
 237                 <tr>
 238                         <td>
 239                                 $Lang::tr{'Captive authentication'}
 240                         </td>
 241                         <td>
 242                                 <select name='AUTH' style='width:8em;'>
 243 END
 244 ;
 245         print "<option value='LICENSE' ";
 246         print " selected='selected'" if ($settings{'AUTH'} eq 'LICENSE');
 247         print ">$Lang::tr{'Captive auth_lic'}</option>";
 248
 249         print "<option value='VOUCHER' ";
 250         print " selected='selected'" if ($settings{'AUTH'} eq 'VOUCHER');
 251         print ">$Lang::tr{'Captive auth_vou'}</option>";
 252
 253         print<<END
 254                                 </select>
 255                         </td>
 256                 </tr>
 257 END
 258 ;
 259
 260         &agbbox();
 261
 262         print"<tr><td>$Lang::tr{'Captive vouchervalid'}</td><td>";
 263         print "<br><table border='0' with=100%>";
 264         print "<th>$Lang::tr{'hours'}</th><th>$Lang::tr{'days'}</th><th>$Lang::tr{'weeks'}</th><th>$Lang::tr{'months'}</th>";
 265
 266         #print hour-dropdownbox
 267         my $hrs=3600;
 268         print "<tr><td><select name='EXP_HOUR' style='width:8em;'>";
 269         print "<option value='0' ";
 270         print " selected='selected'" if ($settings{'EXP_HOUR'} eq '0');
 271         print ">--</option>";
 272         for (my $i = 1; $i<25; $i++){
 273                 my $exp_sec = $i * $hrs;
 274                 print "<option value='$exp_sec' ";
 275                 print " selected='selected'" if ($settings{'EXP_HOUR'} eq $exp_sec);
 276                 print ">$i</option>";
 277         }
 278         print "</td><td>";
 279
 280         #print day-dropdownbox
 281         my $days=3600*24;
 282         print "<select name='EXP_DAY' style='width:8em;'>";
 283         print "<option value='0' ";
 284         print " selected='selected'" if ($settings{'EXP_DAY'} eq '0');
 285         print ">--</option>";
 286         for (my $i = 1; $i<8; $i++){
 287                 my $exp_sec = $i * $days;
 288                 print "<option value='$exp_sec' ";
 289                 print " selected='selected'" if ($settings{'EXP_DAY'} eq $exp_sec);
 290                 print ">$i</option>";
 291         }
 292         print "</td><td>";
 293
 294         #print week-dropdownbox
 295         my $week=3600*24*7;
 296         print "<select name='EXP_WEEK' style='width:8em;'>";
 297         print "<option value='0' ";
 298         print " selected='selected'" if ($settings{'EXP_WEEK'} eq '0');
 299         print ">--</option>";
 300         for (my $i = 1; $i<5; $i++){
 301                 my $exp_sec = $i * $week;
 302                 print "<option value='$exp_sec' ";
 303                 print " selected='selected'" if ($settings{'EXP_WEEK'} eq $exp_sec);
 304                 print ">$i</option>";
 305         }
 306         print "</td><td>";
 307
 308         #print month-dropdownbox
 309         my $month=3600*24*30;
 310         print "<select name='EXP_MONTH' style='width:8em;'>";
 311         print "<option value='0' ";
 312         print " selected='selected'" if ($settings{'EXP_MONTH'} eq '0');
 313         print ">--</option>";
 314         for (my $i = 1; $i<13; $i++){
 315                 my $exp_sec = $i * $month;
 316                 print "<option value='$exp_sec' ";
 317                 print " selected='selected'" if ($settings{'EXP_MONTH'} eq $exp_sec);
 318                 print ">$i</option>";
 319         }
 320         print "</td>";
 321
 322         print "<td>&nbsp;&nbsp;&nbsp;<input type='checkbox' name='UNLIMITED' $checked{'UNLIMITED'}{'on'} /></td><td>&nbsp;<b>$Lang::tr{'Captive nolimit'}</b></td>";
 323
 324         print "</tr></table>";
 325
 326 print<<END
 327                 <tr>
 328                         <td>
 329                         </td>
 330                         <td align='right'>
 331                         <input type='submit' name='ACTION' value="$Lang::tr{'save'}"/>
 332                         </td>
 333                 </tr>
 334                 </table>
 335                 <br><br>
 336 END
 337 ;
 338         print "</form>";
 339
 340         &Header::closebox();
 341
 342         #if settings is set to use vouchers, the voucher part has to be displayed
 343         if ($settings{'AUTH'} eq 'VOUCHER'){
 344                 &voucher();
 345         }else{
 346                 #otherwise we show the licensepart
 347                 &show_license_connections();
 348         }
 349 }
 350
 351 sub agbbox(){
 352         &getagb();
 353 print<<END
 354         <tr>
 355                 <td>
 356                         License agreement
 357                 </td>
 358                 <td>
 359                         <br>
 360                         <textarea cols="50" rows="10" name="AGB">$cgiparams{'AGB'}</textarea>
 361                 </td>
 362         </tr>
 363 END
 364 ;
 365 }
 366
 367 sub gencode(){
 368         #generate a random code only letters from A-Z except 'O'  and 0-9
 369         my @chars = ("A".."N", "P".."Z", "0".."9");
 370         my $randomstring;
 371         $randomstring .= $chars[rand @chars] for 1..8;
 372         return $randomstring;
 373 }
 374
 375 sub voucher(){
 376         #show voucher part
 377         #calculate expiredate
 378         my $expire;
 379         if ($settings{'UNLIMITED'} eq 'on'){
 380                 $expire = $Lang::tr{'Captive nolimit'};
 381         }else{
 382                 $expire = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime(time()+$settings{'EXPIRE'}));
 383     }
 384
 385         &Header::openbox('100%', 'left', $Lang::tr{'Captive voucher'});
 386 print<<END
 387         <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 388         <table class='tbl'>
 389         <tr>
 390                 <th align='center' width='20%'>$Lang::tr{'Captive voucher'}</th><th th align='center' width='25%'>$Lang::tr{'Captive expire'}</th><th align='center' width='55%'>$Lang::tr{'remark'}</th></tr>
 391 END
 392 ;
 393
 394         $cgiparams{'CODE'} = &gencode();
 395         print "<tr><td><center><b><font size='5'>$cgiparams{'CODE'}</font></b></center></td><td><center><font size='3'>$expire</font></center></td><td><input type='text' name='REMARK' align='left' size='80'></td></tr>";
 396         print "</table><br>";
 397         print "<center><input type='submit' name='ACTION' value='$Lang::tr{'Captive voucherout'}'><input type='hidden' name='CODE' value='$cgiparams{'CODE'}'</center></form>";
 398         &Header::closebox();
 399         if (! -z $voucherout) { &show_voucher_out();}
 400         if (! -z $clients) { &show_voucher_in_use();}
 401 }
 402
 403 sub show_license_connections(){
 404         #if there are active clients, show the box with active connections
 405         return if ( -z $clients || ! -f $clients );
 406         my $count=0;
 407         my $col;
 408         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 409 print<<END
 410                 <center><table class='tbl'>
 411                 <tr>
 412                         <th align='center' width='15%'>$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>
 413 END
 414 ;
 415         #read all clients from hash and show table
 416         &General::readhasharray("$clients", \%clientshash);
 417         foreach my $key (keys %clientshash){
 418                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 419                 my $endtime;
 420                 if ($clientshash{$key}[3] eq '0'){
 421                         $endtime=$Lang::tr{'Captive nolimit'};
 422                 }else{
 423                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 424                 }
 425
 426                 if ($count % 2){
 427                         print" <tr>";
 428                         $col="bgcolor='$color{'color20'}'";
 429                 }else{
 430                         $col="bgcolor='$color{'color22'}'";
 431                         print" <tr>";
 432                 }
 433                 print "<td $col><center>$clientshash{$key}[4]</td><td $col><center>$starttime ";
 434                 print "</center></td><td $col><center>$endtime ";
 435                 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>";
 436                 $count++;
 437         }
 438
 439         print "</table>";
 440         &Header::closebox();
 441 }
 442
 443 sub show_voucher_out(){
 444         #if there are already generated but unsused vouchers, print a table
 445         return if ( -z $voucherout);
 446         my $count=0;
 447         my $col;
 448         &Header::openbox('100%', 'left', $Lang::tr{'Captive vout'});
 449         print<<END
 450                 <center><table class='tbl' border='0'>
 451                 <tr>
 452                         <th align='center' width='15%'>$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>
 453 END
 454 ;
 455         &General::readhasharray("$voucherout", \%voucherhash);
 456         foreach my $key (keys %voucherhash)
 457         {
 458                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($voucherhash{$key}[0]));
 459                 my $endtime;
 460                 if ($voucherhash{$key}[2] eq '0'){
 461                         $endtime=$Lang::tr{'Captive nolimit'};
 462                 }else{
 463                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime(time()+$voucherhash{$key}[2]));
 464                 }
 465
 466                 if ($count % 2){
 467                         print" <tr>";
 468                         $col="bgcolor='$color{'color20'}'";
 469                 }else{
 470                         $col="bgcolor='$color{'color22'}'";
 471                         print" <tr>";
 472                 }
 473
 474                 print "<td $col><center><b>$voucherhash{$key}[1]</b></td>";
 475                 print "<td $col><center>$starttime</td>";
 476                 print "<td $col><center>$endtime</td>";
 477                 print "<td $col align='center'>$voucherhash{$key}[3]</td>";
 478                 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>";
 479                 $count++;
 480         }
 481
 482         print "</table>";
 483         &Header::closebox();
 484 }
 485
 486 sub show_voucher_in_use(){
 487         #if there are active clients which use vouchers show table
 488         return if ( -z $clients || ! -f $clients );
 489         my $count=0;
 490         my $col;
 491         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 492 print<<END
 493         <center><table class='tbl' width='100%'>
 494                 <tr>
 495                         <th align='center' width='15%'>$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%'>$Lang::tr{'delete'}</th></tr>
 496 END
 497 ;
 498         &General::readhasharray("$clients", \%clientshash);
 499         foreach my $key (keys %clientshash)
 500         {
 501                 #calculate time from clientshash (starttime)
 502                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 503                 #calculate endtime from clientshash
 504                 my $endtime;
 505                 if ($clientshash{$key}[3] 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], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 509                 }
 510
 511                         if ($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 $col><center><b>$clientshash{$key}[4]</b></td><td $col><center>$starttime ";
 520                         print "</center></td><td $col><center>$endtime</center></td><td $col><center>$clientshash{$key}[0]</td><td $col><center>$clientshash{$key}[5]</center>";
 521                         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>";
 522                         $count++;
 523         }
 524
 525         print "</table>";
 526         &Header::closebox();
 527 }
 528
 529 sub validremark
 530 {
 531         # Checks a hostname against RFC1035
 532         my $remark = $_[0];
 533         # Each part should be at least two characters in length
 534         # but no more than 63 characters
 535         if (length ($remark) < 1 || length ($remark) > 255) {
 536                 return 0;}
 537         # Only valid characters are a-z, A-Z, 0-9 and -
 538         if ($remark !~ /^[a-zäöüA-ZÖÄÜ0-9-.:;\|_()\/\s]*$/) {
 539                 return 0;}
 540         # First character can only be a letter or a digit
 541         if (substr ($remark, 0, 1) !~ /^[a-zäöüA-ZÖÄÜ0-9]*$/) {
 542                 return 0;}
 543         # Last character can only be a letter or a digit
 544         if (substr ($remark, -1, 1) !~ /^[a-zöäüA-ZÖÄÜ0-9.:;_)]*$/) {
 545                 return 0;}
 546         return 1;
 547 }
 548
 549 sub error{
 550         #if an errormessage exits, show a box with errormessage
 551         if ($errormessage) {
 552                 &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 553                 print "<class name='base'>$errormessage\n";
 554                 print "&nbsp;</class>\n";
 555                 &Header::closebox();
 556         }
 557 }
 558
 559 &Header::closebigbox();
 560 &Header::closepage();