]>
git.ipfire.org Git - people/pmueller/ipfire-2.x.git/blob - html/cgi-bin/captive.cgi
2 ###############################################################################
4 # IPFire.org - A linux based firewall #
5 # Copyright (C) 2016 IPFire Team <alexander.marx@ipfire.org> #
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. #
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. #
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/>. #
20 ###############################################################################
26 # enable only the following on debugging purpose
28 #use CGI::Carp 'fatalsToBrowser';
30 require '/var/ipfire/general-functions.pl' ;
31 require "${General::swroot}/lang.pl" ;
32 require "${General::swroot}/header.pl" ;
41 my $voucherout = "${General::swroot}/captive/voucher_out" ;
42 my $clients = "${General::swroot}/captive/clients" ;
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 $voucherout " ); }
50 & Header
:: getcgihash
( \
%cgiparams );
52 & General
:: readhash
( "${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 );
57 & Header
:: showhttpheaders
();
60 if ( $cgiparams { 'ACTION' } eq " $Lang ::tr{'save'}" ){
61 my $file = $cgiparams { 'uploaded_file' };
63 #Check if extension is png
65 my ( $name , $path , $ext ) = fileparse
( $file , qr/\.[^.]*$/ );
67 $errormessage = $Lang :: tr
{ 'Captive wrong ext' };
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' };
79 #Check if we need to upload a new logo
82 my ( $filehandle ) = CGI
:: upload
( 'uploaded_file' );
83 open ( UPLOADFILE
, "> $logopath /logo.png" );
85 while ( < $filehandle > ) {
90 #Open file to check if dimensions are within rang
91 open ( PNG
, "< $logopath /logo.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" );
102 & General
:: writehash
( " $settingsfile " , \
%settings );
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' };
110 $cgiparams { 'AGB' }= "" ;
112 #execute binary to reload firewall rules
113 system ( "/usr/local/bin/captivectrl" );
115 if ( $cgiparams { 'ENABLE_BLUE' } eq 'on' ){
116 system ( "/usr/local/bin/wirelessctrl" );
121 if ( $cgiparams { 'ACTION' } eq " $Lang ::tr{'Captive genvoucher'}" ){
122 #generates a voucher and writes it to /var/ipfire/voucher_out
124 #calculate expiredate
126 if ( $settings { 'UNLIMITED' } eq 'on' ){
127 $expire = $Lang :: tr
{ 'Captive nolimit' };
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' }));
134 if ( $cgiparams { 'EXP_HOUR' }+ $cgiparams { 'EXP_DAY' }+ $cgiparams { 'EXP_WEEK' }+ $cgiparams { 'EXP_MONTH' } == 0 && $cgiparams { 'UNLIMITED' } == '' ){
135 $errormessage = $Lang :: tr
{ 'Captive noexpiretime' };
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' };
147 if ( $cgiparams { 'REMARK' } ne '' && !& validremark
( $cgiparams { 'REMARK' })){
148 $errormessage = $Lang :: tr
{ 'fwhost err remark' };
151 #if no error detected, write to disk
153 my $date = time (); #seconds in utc
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 ] = "" ;}
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 );
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 ]);
172 & General
:: log ( "Captive" , "Generated new voucher $voucherhash { $key }[1] $voucherhash { $key }[2] hours valid expires on $expdate remark $rem " );
176 if ( $cgiparams { 'ACTION' } eq 'delvoucherout' ){
177 #deletes an already generated but unused voucher
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 };
192 & General
:: writehasharray
( " $voucherout " , \
%voucherhash );
195 if ( $cgiparams { 'ACTION' } eq 'delvoucherinuse' ){
196 #delete voucher and connection in use
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 ]);
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 };
212 & General
:: writehasharray
( " $clients " , \
%clientshash );
213 #reload firewallrules to kill connection of client
214 system ( "/usr/local/bin/captivectrl" );
217 #open webpage, print header and open box
218 & Header
:: openpage
( $Lang :: tr
{ 'Captive menu' }, 1 , '' );
219 & Header
:: openbigbox
();
221 #call error() to see if we have to print an errormessage on website
224 #call config() to display the configuration box
228 #open textfile from /var/ipfire/captive/agb.txt
229 open ( my $handle , "<:utf8" , "/var/ipfire/captive/agb.txt" ) or die ( "$!" );
231 #read line by line and print on screen
232 $cgiparams { 'AGB' }.= HTML
:: Entities
:: decode_entities
( $_ );
238 #prints the config box on the website
239 & Header
:: openbox
( '100%' , 'left' , $Lang :: tr
{ 'Captive config' });
241 <form method='post' action=' $ENV {'SCRIPT_NAME'}' enctype="multipart/form-data"> \n
242 <table width='100%' border="0">
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'" ;
251 $checked { 'ENABLE_BLUE' }{ 'off' } = '' ;
252 $checked { 'ENABLE_BLUE' }{ 'on' } = '' ;
253 $checked { 'ENABLE_BLUE' }{ $settings { 'ENABLE_BLUE' }} = "checked='checked'" ;
255 $checked { 'UNLIMITED' }{ 'off' } = '' ;
256 $checked { 'UNLIMITED' }{ 'on' } = '' ;
257 $checked { 'UNLIMITED' }{ $settings { 'UNLIMITED' }} = "checked='checked'" ;
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>" ;
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>" ;
270 $Lang ::tr{'Captive title'}
273 <input type='text' name='TITLE' value=" $settings {'TITLE'}" size='40'>
282 $Lang ::tr{'Captive authentication'}
285 <select name='AUTH' style='width:8em;'>
288 print "<option value='LICENSE' " ;
289 print " selected='selected'" if ( $settings { 'AUTH' } eq 'LICENSE' );
290 print "> $Lang ::tr{'Captive auth_lic'}</option>" ;
292 print "<option value='VOUCHER' " ;
293 print " selected='selected'" if ( $settings { 'AUTH' } eq 'VOUCHER' );
294 print "> $Lang ::tr{'Captive auth_vou'}</option>" ;
302 if ( $settings { 'AUTH' } eq 'LICENSE' ){ & agbbox
(); };
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>" ;
311 print "<td> $Lang ::tr{'Captive logo_set'}</td>" ;
312 print "<td><br> $Lang ::tr{'no'}</td></tr>" ;
316 <td> $Lang ::tr{'Captive brand color'}</td>
318 <input type="color" name="COLOR" value=" $settings {'COLOR'}">
326 <input type='submit' name='ACTION' value=" $Lang ::tr{'save'}"/>
337 #if settings is set to use vouchers, the voucher part has to be displayed
338 if ( $settings { 'AUTH' } eq 'VOUCHER' ){
341 #otherwise we show the licensepart
342 & show_license_connections
();
355 <textarea cols="50" rows="10" name="AGB"> $cgiparams {'AGB'}</textarea>
363 #generate a random code only letters from A-Z except 'O' and 0-9
364 my @chars = ( "A" .. "N" , "P" .. "Z" , "0" .. "9" );
366 $randomstring .= $chars [ rand @chars ] for 1 . .8 ;
367 return $randomstring ;
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>" ;
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>" ;
380 #print hour-dropdownbox
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>" ;
394 #print day-dropdownbox
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>" ;
408 #print week-dropdownbox
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>" ;
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>" ;
435 print "<td> <input type='checkbox' name='UNLIMITED' $checked {'UNLIMITED'}{'on'} /></td><td> <b> $Lang ::tr{'Captive nolimit'}</b></td>" ;
436 print "</tr></table>" ;
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> </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>" ;
444 if (! - z
$voucherout ) { & show_voucher_out
();}
445 if (! - z
$clients ) { & show_voucher_in_use
();}
448 sub show_license_connections
(){
449 #if there are active clients, show the box with active connections
450 return if ( - z
$clients || ! - f
$clients );
453 & Header
:: openbox
( '100%' , 'left' , $Lang :: tr
{ 'Captive voactive' });
455 <center><table class='tbl'>
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>
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 ]));
465 if ( $clientshash { $key }[ 3 ] eq '0' ){
466 $endtime = $Lang :: tr
{ 'Captive nolimit' };
468 $endtime = sub { sprintf ' %02d . %02d . %04d %02d : %02d ' , $_ [ 3 ], $_ [ 4 ]+ 1 , $_ [ 5 ]+ 1900 , $_ [ 2 ], $_ [ 1 ] }->( localtime ( $clientshash { $key }[ 2 ]+ $clientshash { $key }[ 3 ]));
473 $col = "bgcolor=' $color {'color20'}'" ;
475 $col = "bgcolor=' $color {'color22'}'" ;
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>" ;
488 sub show_voucher_out
(){
489 #if there are already generated but unsused vouchers, print a table
490 return if ( - z
$voucherout );
493 & Header
:: openbox
( '100%' , 'left' , $Lang :: tr
{ 'Captive vout' });
495 <center><table class='tbl' border='0'>
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>
500 & General
:: readhasharray
( " $voucherout " , \
%voucherhash );
501 foreach my $key ( keys %voucherhash )
503 my $starttime = sub { sprintf ' %02d . %02d . %04d %02d : %02d ' , $_ [ 3 ], $_ [ 4 ]+ 1 , $_ [ 5 ]+ 1900 , $_ [ 2 ], $_ [ 1 ] }->( localtime ( $voucherhash { $key }[ 0 ]));
505 if ( $voucherhash { $key }[ 2 ] eq '0' ){
506 $endtime = $Lang :: tr
{ 'Captive nolimit' };
508 $endtime = sub { sprintf ' %02d . %02d . %04d %02d : %02d ' , $_ [ 3 ], $_ [ 4 ]+ 1 , $_ [ 5 ]+ 1900 , $_ [ 2 ], $_ [ 1 ] }->( localtime ( time ()+ $voucherhash { $key }[ 2 ]));
513 $col = "bgcolor=' $color {'color20'}'" ;
515 $col = "bgcolor=' $color {'color22'}'" ;
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>" ;
531 sub show_voucher_in_use
(){
532 #if there are active clients which use vouchers show table
533 return if ( - z
$clients || ! - f
$clients );
536 & Header
:: openbox
( '100%' , 'left' , $Lang :: tr
{ 'Captive voactive' });
538 <center><table class='tbl' width='100%'>
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>
543 & General
:: readhasharray
( " $clients " , \
%clientshash );
544 foreach my $key ( keys %clientshash )
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
550 if ( $clientshash { $key }[ 3 ] eq '0' ){
551 $endtime = $Lang :: tr
{ 'Captive nolimit' };
553 $endtime = sub { sprintf ' %02d . %02d . %04d %02d : %02d ' , $_ [ 3 ], $_ [ 4 ]+ 1 , $_ [ 5 ]+ 1900 , $_ [ 2 ], $_ [ 1 ] }->( localtime ( $clientshash { $key }[ 2 ]+ $clientshash { $key }[ 3 ]));
558 $col = "bgcolor=' $color {'color20'}'" ;
560 $col = "bgcolor=' $color {'color22'}'" ;
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>" ;
576 # Checks a hostname against RFC1035
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 ) {
582 # Only valid characters are a-z, A-Z, 0-9 and -
583 if ( $remark !~ /^[a-zäöüA-ZÖÄÜ0-9-.:;\|_()\/ \s
]*$/) {
585 # First character can only be a letter or a digit
586 if ( substr ( $remark , 0 , 1 ) !~ /^[a-zäöüA-ZÖÄÜ0-9]*$/ ) {
588 # Last character can only be a letter or a digit
589 if ( substr ( $remark , - 1 , 1 ) !~ /^[a-zöäüA-ZÖÄÜ0-9.:;_)]*$/ ) {
596 my ( $width , $height ) = ( undef , undef );
598 if ( $Buffer =~ /IHDR(.{8})/ ) {
600 ( $width , $height ) = unpack ( "NN" , $PNG );
605 return ( $width , $height );
609 #if an errormessage exits, show a box with errormessage
611 & Header
:: openbox
( '100%' , 'left' , $Lang :: tr
{ 'error messages' });
612 print "<class name='base'> $errormessage \n " ;
613 print " </class> \n " ;
618 & Header
:: closebigbox
();
619 & Header
:: closepage
();