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         if (!$errormessage){
  71                 #Check if we need to upload a new logo
  72                 if($file){
  73                         #Save File
  74                         my ($filehandle) = CGI::upload('uploaded_file');
  75                         open (UPLOADFILE, ">$logopath/logo.png");
  76                         binmode $filehandle;
  77                         while ( <$filehandle> ) {
  78                                 print UPLOADFILE;
  79                         }
  80                         close (UPLOADFILE);
  81
  82                         #Open file to check if dimensions are within rang
  83                         open (PNG , "<$logopath/logo.png");
  84                         local $/;
  85                         my $PNG1=<PNG>;
  86                         close(PNG);
  87                         my ($width,$height)=&pngsize($PNG1);
  88                         if($width > 1920 || $height > 800 || $width < 1280 || $height < 4000){
  89                                 $errormessage.="$Lang::tr{'Captive invalid logosize'} <br>Filedimensions width: $width   height: $height<br>";
  90                                 unlink("$logopath/logo.png");
  91                         }
  92                 }
  93
  94                 #saves the Captiveportal settings to disk
  95                 if ($cgiparams{'UNLIMITED'} eq 'on'){
  96                         $cgiparams{'EXP_HOUR'}  = '0';
  97                         $cgiparams{'EXP_DAY'}   = '0';
  98                         $cgiparams{'EXP_WEEK'}  = '0';
  99                         $cgiparams{'EXP_MONTH'} = '0';
 100                 }
 101
 102                 $settings{'ENABLE_GREEN'}               = $cgiparams{'ENABLE_GREEN'};
 103                 $settings{'ENABLE_BLUE'}                = $cgiparams{'ENABLE_BLUE'};
 104                 $settings{'AUTH'}                               = $cgiparams{'AUTH'};
 105                 $settings{'EXPIRE'}                             = $cgiparams{'EXP_HOUR'}+$cgiparams{'EXP_DAY'}+$cgiparams{'EXP_WEEK'}+$cgiparams{'EXP_MONTH'};
 106                 $settings{'EXP_HOUR'}                   = $cgiparams{'EXP_HOUR'};
 107                 $settings{'EXP_DAY'}                    = $cgiparams{'EXP_DAY'};
 108                 $settings{'EXP_WEEK'}                   = $cgiparams{'EXP_WEEK'};
 109                 $settings{'EXP_MONTH'}                  = $cgiparams{'EXP_MONTH'};
 110                 $settings{'TITLE'}                              = $cgiparams{'TITLE'};
 111                 $settings{'UNLIMITED'}                  = $cgiparams{'UNLIMITED'};
 112                 &General::writehash("$settingsfile", \%settings);
 113
 114                 #write Licensetext if defined
 115                 if ($cgiparams{'AGB'}){
 116                         $cgiparams{'AGB'} = &Header::escape($cgiparams{'AGB'});
 117                         open( FH, ">:utf8", "/var/ipfire/captive/agb.txt" ) or die("$!");
 118                         print FH $cgiparams{'AGB'};
 119                         close( FH );
 120                         $cgiparams{'AGB'}="";
 121                 }
 122                 #execute binary to reload firewall rules
 123                 system("/usr/local/bin/captivectrl");
 124         }
 125 }
 126
 127 if ($cgiparams{'ACTION'} eq "$Lang::tr{'Captive voucherout'}"){
 128         #generates a voucher and writes it to /var/ipfire/voucher_out
 129
 130         #check if we already have a voucher with same code
 131         &General::readhasharray("$voucherout", \%voucherhash);
 132         foreach my $key (keys %voucherhash) {
 133                 if($voucherhash{$key}[1] eq $cgiparams{'CODE'}){
 134                         $errormessage=$Lang::tr{'Captive err doublevoucher'};
 135                         last;
 136                 }
 137         }
 138
 139         #check valid remark
 140         if ($cgiparams{'REMARK'} ne '' && !&validremark($cgiparams{'REMARK'})){
 141                 $errormessage=$Lang::tr{'fwhost err remark'};
 142         }
 143
 144         #if no error detected, write to disk
 145         if (!$errormessage){
 146                 my $date=time(); #seconds in utc
 147
 148                 #first get new key from hash
 149                 my $key=&General::findhasharraykey (\%voucherhash);
 150                 #initialize all fields with ''
 151                 foreach my $i (0 .. 3) { $voucherhash{$key}[$i] = "";}
 152                 #define fields
 153                 $voucherhash{$key}[0] = $date;
 154                 $voucherhash{$key}[1] = $cgiparams{'CODE'};
 155                 $voucherhash{$key}[2] = $settings{'EXPIRE'};
 156                 $voucherhash{$key}[3] = $cgiparams{'REMARK'};
 157                 #write values to disk
 158                 &General::writehasharray("$voucherout", \%voucherhash);
 159
 160                 #now prepare log entry, get expiring date for voucher and decode remark for logfile
 161                 my $expdate=localtime(time()+$voucherhash{$key}[3]);
 162                 my $rem=HTML::Entities::decode_entities($voucherhash{$key}[4]);
 163
 164                 #write logfile entry
 165                 &General::log("Captive", "Generated new voucher $voucherhash{$key}[1] $voucherhash{$key}[2] hours valid expires on $expdate remark $rem");
 166         }
 167 }
 168
 169 if ($cgiparams{'ACTION'} eq 'delvoucherout'){
 170         #deletes an already generated but unused voucher
 171
 172         #read all generated vouchers
 173         &General::readhasharray("$voucherout", \%voucherhash);
 174         foreach my $key (keys %voucherhash) {
 175                 if($cgiparams{'key'} eq $voucherhash{$key}[0]){
 176                         #write logenty with decoded remark
 177                         my $rem=HTML::Entities::decode_entities($voucherhash{$key}[4]);
 178                         &General::log("Captive", "Delete unused voucher $voucherhash{$key}[1] $voucherhash{$key}[2] hours valid expires on $voucherhash{$key}[3] remark $rem");
 179                         #delete line from hash
 180                         delete $voucherhash{$key};
 181                         last;
 182                 }
 183         }
 184         #write back hash
 185         &General::writehasharray("$voucherout", \%voucherhash);
 186 }
 187
 188 if ($cgiparams{'ACTION'} eq 'delvoucherinuse'){
 189         #delete voucher and connection in use
 190
 191         #read all active clients
 192         &General::readhasharray("$clients", \%clientshash);
 193         foreach my $key (keys %clientshash) {
 194                 if($cgiparams{'key'} eq $clientshash{$key}[0]){
 195                         #prepare log entry with decoded remark
 196                         my $rem=HTML::Entities::decode_entities($clientshash{$key}[7]);
 197                         #write logentry
 198                         &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");
 199                         #delete line from hash
 200                         delete $clientshash{$key};
 201                         last;
 202                 }
 203         }
 204         #write back hash
 205         &General::writehasharray("$clients", \%clientshash);
 206         #reload firewallrules to kill connection of client
 207         system("/usr/local/bin/captivectrl");
 208 }
 209
 210 #open webpage, print header and open box
 211 &Header::openpage($Lang::tr{'Captive menu'}, 1, '');
 212 &Header::openbigbox();
 213
 214 #call error() to see if we have to print an errormessage on website
 215 &error();
 216
 217 #call config() to display the configuration box
 218 &config();
 219
 220 sub getagb(){
 221         #open textfile from /var/ipfire/captive/agb.txt
 222         open( my $handle, "<:utf8", "/var/ipfire/captive/agb.txt" ) or die("$!");
 223                 while(<$handle>){
 224                         #read line by line and print on screen
 225                         $cgiparams{'AGB'}.= HTML::Entities::decode_entities($_);
 226                 }
 227         close( $handle );
 228 }
 229
 230 sub config(){
 231         #prints the config box on the website
 232         &Header::openbox('100%', 'left', $Lang::tr{'Captive config'});
 233         print <<END
 234                 <form method='post' action='$ENV{'SCRIPT_NAME'}' enctype="multipart/form-data">\n
 235                 <table width='100%' border="0">
 236                 <tr>
 237 END
 238 ;
 239         #check which parameters have to be enabled (from settings file)
 240         $checked{'ENABLE_GREEN'}{'off'} = '';
 241         $checked{'ENABLE_GREEN'}{'on'} = '';
 242         $checked{'ENABLE_GREEN'}{$settings{'ENABLE_GREEN'}} = "checked='checked'";
 243
 244         $checked{'ENABLE_BLUE'}{'off'} = '';
 245         $checked{'ENABLE_BLUE'}{'on'} = '';
 246         $checked{'ENABLE_BLUE'}{$settings{'ENABLE_BLUE'}} = "checked='checked'";
 247
 248         $checked{'UNLIMITED'}{'off'} = '';
 249         $checked{'UNLIMITED'}{'on'} = '';
 250         $checked{'UNLIMITED'}{$settings{'UNLIMITED'}} = "checked='checked'";
 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><br>
 263                         $Lang::tr{'Captive title'}
 264                 </td>
 265                 <td><br>
 266                         <input type='text' name='TITLE' value="$settings{'TITLE'}" size='40'>
 267                 </td>
 268                 </tr>
 269 END
 270 ;
 271
 272 print<<END
 273                 <tr>
 274                         <td>
 275                                 $Lang::tr{'Captive authentication'}
 276                         </td>
 277                         <td>
 278                                 <select name='AUTH' style='width:8em;'>
 279 END
 280 ;
 281         print "<option value='LICENSE' ";
 282         print " selected='selected'" if ($settings{'AUTH'} eq 'LICENSE');
 283         print ">$Lang::tr{'Captive auth_lic'}</option>";
 284
 285         print "<option value='VOUCHER' ";
 286         print " selected='selected'" if ($settings{'AUTH'} eq 'VOUCHER');
 287         print ">$Lang::tr{'Captive auth_vou'}</option>";
 288
 289         print<<END
 290                                 </select>
 291                         </td>
 292                 </tr>
 293 END
 294 ;
 295
 296         &agbbox();
 297
 298         #Logo Upload
 299         print "<tr><td>$Lang::tr{'Captive logo_upload'}</td><td><INPUT TYPE='file' NAME='uploaded_file' SIZE=30 MAXLENGTH=80></td></tr><tr>";
 300         #Show Logo in webinterface with 1/2 size if set
 301         if (-f "$logopath/logo.png"){
 302                 print"<td>$Lang::tr{'Captive logo_set'}</td>";
 303                 print"<td><img src='/captive/logo/logo.png' alt='$logopath/logo.png' width='25%' height='25%' /></td></tr>";
 304         }else{
 305                 print"<td>$Lang::tr{'Captive logo_set'}</td>";
 306                 print"<td><br>$Lang::tr{'no'}</td></tr>";
 307         }
 308         print"<tr><td>$Lang::tr{'Captive vouchervalid'}</td><td>";
 309         print "<br><table border='0' with=100%>";
 310         print "<th>$Lang::tr{'hours'}</th><th>$Lang::tr{'days'}</th><th>$Lang::tr{'weeks'}</th><th>$Lang::tr{'months'}</th>";
 311
 312         #print hour-dropdownbox
 313         my $hrs=3600;
 314         print "<tr><td><select name='EXP_HOUR' style='width:8em;'>";
 315         print "<option value='0' ";
 316         print " selected='selected'" if ($settings{'EXP_HOUR'} eq '0');
 317         print ">--</option>";
 318         for (my $i = 1; $i<25; $i++){
 319                 my $exp_sec = $i * $hrs;
 320                 print "<option value='$exp_sec' ";
 321                 print " selected='selected'" if ($settings{'EXP_HOUR'} eq $exp_sec);
 322                 print ">$i</option>";
 323         }
 324         print "</td><td>";
 325
 326         #print day-dropdownbox
 327         my $days=3600*24;
 328         print "<select name='EXP_DAY' style='width:8em;'>";
 329         print "<option value='0' ";
 330         print " selected='selected'" if ($settings{'EXP_DAY'} eq '0');
 331         print ">--</option>";
 332         for (my $i = 1; $i<8; $i++){
 333                 my $exp_sec = $i * $days;
 334                 print "<option value='$exp_sec' ";
 335                 print " selected='selected'" if ($settings{'EXP_DAY'} eq $exp_sec);
 336                 print ">$i</option>";
 337         }
 338         print "</td><td>";
 339
 340         #print week-dropdownbox
 341         my $week=3600*24*7;
 342         print "<select name='EXP_WEEK' style='width:8em;'>";
 343         print "<option value='0' ";
 344         print " selected='selected'" if ($settings{'EXP_WEEK'} eq '0');
 345         print ">--</option>";
 346         for (my $i = 1; $i<5; $i++){
 347                 my $exp_sec = $i * $week;
 348                 print "<option value='$exp_sec' ";
 349                 print " selected='selected'" if ($settings{'EXP_WEEK'} eq $exp_sec);
 350                 print ">$i</option>";
 351         }
 352         print "</td><td>";
 353
 354         #print month-dropdownbox
 355         my $month=3600*24*30;
 356         print "<select name='EXP_MONTH' style='width:8em;'>";
 357         print "<option value='0' ";
 358         print " selected='selected'" if ($settings{'EXP_MONTH'} eq '0');
 359         print ">--</option>";
 360         for (my $i = 1; $i<13; $i++){
 361                 my $exp_sec = $i * $month;
 362                 print "<option value='$exp_sec' ";
 363                 print " selected='selected'" if ($settings{'EXP_MONTH'} eq $exp_sec);
 364                 print ">$i</option>";
 365         }
 366         print "</td>";
 367
 368         print "<td>&nbsp;&nbsp;&nbsp;<input type='checkbox' name='UNLIMITED' $checked{'UNLIMITED'}{'on'} /></td><td>&nbsp;<b>$Lang::tr{'Captive nolimit'}</b></td>";
 369
 370         print "</tr></table>";
 371
 372 print<<END
 373                 <tr>
 374                         <td>
 375                         </td>
 376                         <td align='right'>
 377                         <input type='submit' name='ACTION' value="$Lang::tr{'save'}"/>
 378                         </td>
 379                 </tr>
 380                 </table>
 381                 <br><br>
 382 END
 383 ;
 384         print "</form>";
 385
 386         &Header::closebox();
 387
 388         #if settings is set to use vouchers, the voucher part has to be displayed
 389         if ($settings{'AUTH'} eq 'VOUCHER'){
 390                 &voucher();
 391         }else{
 392                 #otherwise we show the licensepart
 393                 &show_license_connections();
 394         }
 395 }
 396
 397 sub agbbox(){
 398         &getagb();
 399 print<<END
 400         <tr>
 401                 <td>
 402                         License agreement
 403                 </td>
 404                 <td>
 405                         <br>
 406                         <textarea cols="50" rows="10" name="AGB">$cgiparams{'AGB'}</textarea>
 407                 </td>
 408         </tr>
 409 END
 410 ;
 411 }
 412
 413 sub gencode(){
 414         #generate a random code only letters from A-Z except 'O'  and 0-9
 415         my @chars = ("A".."N", "P".."Z", "0".."9");
 416         my $randomstring;
 417         $randomstring .= $chars[rand @chars] for 1..8;
 418         return $randomstring;
 419 }
 420
 421 sub voucher(){
 422         #show voucher part
 423         #calculate expiredate
 424         my $expire;
 425         if ($settings{'UNLIMITED'} eq 'on'){
 426                 $expire = $Lang::tr{'Captive nolimit'};
 427         }else{
 428                 $expire = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime(time()+$settings{'EXPIRE'}));
 429     }
 430
 431         &Header::openbox('100%', 'left', $Lang::tr{'Captive voucher'});
 432 print<<END
 433         <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 434         <table class='tbl'>
 435         <tr>
 436                 <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>
 437 END
 438 ;
 439
 440         $cgiparams{'CODE'} = &gencode();
 441         print "<tr><td><center><b><font size='5'>$cgiparams{'CODE'}</font></b></center></td><td><center><font size='3'>$expire</font></center></td><td><input type='text' name='REMARK' align='left' size='80'></td></tr>";
 442         print "</table><br>";
 443         print "<center><input type='submit' name='ACTION' value='$Lang::tr{'Captive voucherout'}'><input type='hidden' name='CODE' value='$cgiparams{'CODE'}'</center></form>";
 444         &Header::closebox();
 445         if (! -z $voucherout) { &show_voucher_out();}
 446         if (! -z $clients) { &show_voucher_in_use();}
 447 }
 448
 449 sub show_license_connections(){
 450         #if there are active clients, show the box with active connections
 451         return if ( -z $clients || ! -f $clients );
 452         my $count=0;
 453         my $col;
 454         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 455 print<<END
 456                 <center><table class='tbl'>
 457                 <tr>
 458                         <th align='center' width='15%'>$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>
 459 END
 460 ;
 461         #read all clients from hash and show table
 462         &General::readhasharray("$clients", \%clientshash);
 463         foreach my $key (keys %clientshash){
 464                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 465                 my $endtime;
 466                 if ($clientshash{$key}[3] eq '0'){
 467                         $endtime=$Lang::tr{'Captive nolimit'};
 468                 }else{
 469                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 470                 }
 471
 472                 if ($count % 2){
 473                         print" <tr>";
 474                         $col="bgcolor='$color{'color20'}'";
 475                 }else{
 476                         $col="bgcolor='$color{'color22'}'";
 477                         print" <tr>";
 478                 }
 479                 print "<td $col><center>$clientshash{$key}[4]</td><td $col><center>$starttime ";
 480                 print "</center></td><td $col><center>$endtime ";
 481                 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>";
 482                 $count++;
 483         }
 484
 485         print "</table>";
 486         &Header::closebox();
 487 }
 488
 489 sub show_voucher_out(){
 490         #if there are already generated but unsused vouchers, print a table
 491         return if ( -z $voucherout);
 492         my $count=0;
 493         my $col;
 494         &Header::openbox('100%', 'left', $Lang::tr{'Captive vout'});
 495         print<<END
 496                 <center><table class='tbl' border='0'>
 497                 <tr>
 498                         <th align='center' width='15%'>$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>
 499 END
 500 ;
 501         &General::readhasharray("$voucherout", \%voucherhash);
 502         foreach my $key (keys %voucherhash)
 503         {
 504                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($voucherhash{$key}[0]));
 505                 my $endtime;
 506                 if ($voucherhash{$key}[2] eq '0'){
 507                         $endtime=$Lang::tr{'Captive nolimit'};
 508                 }else{
 509                         $endtime=sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime(time()+$voucherhash{$key}[2]));
 510                 }
 511
 512                 if ($count % 2){
 513                         print" <tr>";
 514                         $col="bgcolor='$color{'color20'}'";
 515                 }else{
 516                         $col="bgcolor='$color{'color22'}'";
 517                         print" <tr>";
 518                 }
 519
 520                 print "<td $col><center><b>$voucherhash{$key}[1]</b></td>";
 521                 print "<td $col><center>$starttime</td>";
 522                 print "<td $col><center>$endtime</td>";
 523                 print "<td $col align='center'>$voucherhash{$key}[3]</td>";
 524                 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>";
 525                 $count++;
 526         }
 527
 528         print "</table>";
 529         &Header::closebox();
 530 }
 531
 532 sub show_voucher_in_use(){
 533         #if there are active clients which use vouchers show table
 534         return if ( -z $clients || ! -f $clients );
 535         my $count=0;
 536         my $col;
 537         &Header::openbox('100%', 'left', $Lang::tr{'Captive voactive'});
 538 print<<END
 539         <center><table class='tbl' width='100%'>
 540                 <tr>
 541                         <th align='center' width='15%'>$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%'>$Lang::tr{'delete'}</th></tr>
 542 END
 543 ;
 544         &General::readhasharray("$clients", \%clientshash);
 545         foreach my $key (keys %clientshash)
 546         {
 547                 #calculate time from clientshash (starttime)
 548                 my $starttime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]));
 549                 #calculate endtime from clientshash
 550                 my $endtime;
 551                 if ($clientshash{$key}[3] eq '0'){
 552                         $endtime=$Lang::tr{'Captive nolimit'};
 553                 }else{
 554                         $endtime = sub{sprintf '%02d.%02d.%04d %02d:%02d', $_[3], $_[4]+1, $_[5]+1900, $_[2], $_[1]  }->(localtime($clientshash{$key}[2]+$clientshash{$key}[3]));
 555                 }
 556
 557                         if ($count % 2){
 558                                 print" <tr>";
 559                                 $col="bgcolor='$color{'color20'}'";
 560                         }else{
 561                                 $col="bgcolor='$color{'color22'}'";
 562                                 print" <tr>";
 563                         }
 564
 565                         print "<td $col><center><b>$clientshash{$key}[4]</b></td><td $col><center>$starttime ";
 566                         print "</center></td><td $col><center>$endtime</center></td><td $col><center>$clientshash{$key}[0]</td><td $col><center>$clientshash{$key}[5]</center>";
 567                         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>";
 568                         $count++;
 569         }
 570
 571         print "</table>";
 572         &Header::closebox();
 573 }
 574
 575 sub validremark
 576 {
 577         # Checks a hostname against RFC1035
 578         my $remark = $_[0];
 579         # Each part should be at least two characters in length
 580         # but no more than 63 characters
 581         if (length ($remark) < 1 || length ($remark) > 255) {
 582                 return 0;}
 583         # Only valid characters are a-z, A-Z, 0-9 and -
 584         if ($remark !~ /^[a-zäöüA-ZÖÄÜ0-9-.:;\|_()\/\s]*$/) {
 585                 return 0;}
 586         # First character can only be a letter or a digit
 587         if (substr ($remark, 0, 1) !~ /^[a-zäöüA-ZÖÄÜ0-9]*$/) {
 588                 return 0;}
 589         # Last character can only be a letter or a digit
 590         if (substr ($remark, -1, 1) !~ /^[a-zöäüA-ZÖÄÜ0-9.:;_)]*$/) {
 591                 return 0;}
 592         return 1;
 593 }
 594
 595 sub pngsize {
 596         my $Buffer = shift;
 597         my ($width,$height) = ( undef, undef );
 598
 599         if ($Buffer =~ /IHDR(.{8})/) {
 600                 my $PNG = $1;
 601                 ($width,$height) = unpack( "NN", $PNG );
 602         } else {
 603                 $width=$Lang::tr{'acct invalid png'};
 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();