Annotation of loncom/interface/lonpreferences.pm, revision 1.19

1.1       www         1: # The LearningOnline Network
                      2: # Preferences
                      3: #
1.19    ! www         4: # $Id: lonpreferences.pm,v 1.18 2003/04/01 22:21:45 www Exp $
1.2       albertel    5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
1.1       www        28: # (Internal Server Error Handler
                     29: #
                     30: # (Login Screen
                     31: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
                     32: # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)
                     33: #
                     34: # 3/1/1 Gerd Kortemeyer)
                     35: #
                     36: # 3/1 Gerd Kortemeyer
                     37: #
1.3       matthew    38: # 2/13/02 2/14 2/15 Matthew Hall
                     39: #
                     40: # This package uses the "londes.js" javascript code. 
                     41: #
                     42: # TODOs that have to be completed:
                     43: #    interface with lonnet to change the password
                     44:  
1.1       www        45: package Apache::lonpreferences;
                     46: 
                     47: use strict;
                     48: use Apache::Constants qw(:common);
1.3       matthew    49: use Apache::File;
                     50: use Crypt::DES;
                     51: use DynaLoader; # for Crypt::DES version
1.4       matthew    52: use Apache::loncommon();
1.3       matthew    53: 
                     54: #
                     55: # Write lonnet::passwd to do the call below.
                     56: # Use:
                     57: #   my $answer=reply("encrypt:passwd:$udom:$uname:$upass",$tryserver);
                     58: #
                     59: ##################################################
                     60: #          password associated functions         #
                     61: ##################################################
                     62: sub des_keys {
1.4       matthew    63:     # Make a new key for DES encryption.
                     64:     # Each key has two parts which are returned seperately.
                     65:     # Please note:  Each key must be passed through the &hex function
                     66:     # before it is output to the web browser.  The hex versions cannot
                     67:     # be used to decrypt.
1.3       matthew    68:     my @hexstr=('0','1','2','3','4','5','6','7',
                     69:                 '8','9','a','b','c','d','e','f');
                     70:     my $lkey='';
                     71:     for (0..7) {
                     72:         $lkey.=$hexstr[rand(15)];
                     73:     }
                     74:     my $ukey='';
                     75:     for (0..7) {
                     76:         $ukey.=$hexstr[rand(15)];
                     77:     }
                     78:     return ($lkey,$ukey);
                     79: }
                     80: 
                     81: sub des_decrypt {
                     82:     my ($key,$cyphertext) = @_;
                     83:     my $keybin=pack("H16",$key);
                     84:     my $cypher;
                     85:     if ($Crypt::DES::VERSION>=2.03) {
                     86:         $cypher=new Crypt::DES $keybin;
                     87:     } else {
                     88:         $cypher=new DES $keybin;
                     89:     }
                     90:     my $plaintext=
                     91: 	$cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,0,16))));
                     92:     $plaintext.=
                     93: 	$cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,16,16))));
1.4       matthew    94:     $plaintext=substr($plaintext,1,ord(substr($plaintext,0,1)) );
1.3       matthew    95:     return $plaintext;
                     96: }
                     97: 
1.4       matthew    98: ################################################################
                     99: #                       Handler subroutines                    #
                    100: ################################################################
1.9       matthew   101: 
                    102: ################################################################
                    103: #         Anonymous Discussion Name Change Subroutines         #
                    104: ################################################################
1.5       www       105: sub screennamechanger {
                    106:     my $r = shift;
                    107:     my $user       = $ENV{'user.name'};
                    108:     my $domain     = $ENV{'user.domain'};
1.14      www       109:     my %userenv = &Apache::lonnet::get
                    110:         ('environment',['screenname','nickname']);
1.6       www       111:     my $screenname=$userenv{'screenname'};
1.14      www       112:     my $nickname=$userenv{'nickname'};
1.10      www       113:     my $bodytag=&Apache::loncommon::bodytag(
1.14      www       114:               'Change Your Nickname and Anonymous Screen Name');
1.5       www       115:     $r->print(<<ENDSCREEN);
                    116: <html>
1.10      www       117: $bodytag
                    118: 
1.6       www       119: <form name="server" action="/adm/preferences" method="post">
                    120: <input type="hidden" name="action" value="verify_and_change_screenname" />
1.14      www       121: <br />New screenname (shown if you post anonymously):
1.6       www       122: <input type="text" size="20" value="$screenname" name="screenname" />
1.14      www       123: <br />New nickname (shown if you post non-anonymously):
                    124: <input type="text" size="20" value="$nickname" name="nickname" />
1.6       www       125: <input type="submit" value="Change" />
                    126: </form>
1.5       www       127: </body>
                    128: </html>
                    129: ENDSCREEN
                    130: }
1.6       www       131: 
                    132: sub verify_and_change_screenname {
                    133:     my $r = shift;
                    134:     my $user       = $ENV{'user.name'};
                    135:     my $domain     = $ENV{'user.domain'};
1.14      www       136: # Screenname
1.6       www       137:     my $newscreen  = $ENV{'form.screenname'};
1.14      www       138:     $newscreen=~s/[^ \w]//g;
1.6       www       139:     my $message='';
                    140:     if ($newscreen) {
1.7       www       141:         &Apache::lonnet::put('environment',{'screenname' => $newscreen});
                    142:         &Apache::lonnet::appenv('environment.screenname' => $newscreen);
1.6       www       143:         $message='Set new screenname to '.$newscreen;
                    144:     } else {
                    145:         &Apache::lonnet::del('environment',['screenname']);
1.7       www       146:         &Apache::lonnet::delenv('environment\.screenname');
1.6       www       147:         $message='Reset screenname';
                    148:     }
1.14      www       149: # Nickname
                    150:     $message.='<br />';
1.17      matthew   151:     $newscreen  = $ENV{'form.nickname'};
1.14      www       152:     $newscreen=~s/[^ \w]//g;
                    153:     if ($newscreen) {
                    154:         &Apache::lonnet::put('environment',{'nickname' => $newscreen});
                    155:         &Apache::lonnet::appenv('environment.nickname' => $newscreen);
                    156:         $message.='Set new nickname to '.$newscreen;
                    157:     } else {
                    158:         &Apache::lonnet::del('environment',['nickname']);
                    159:         &Apache::lonnet::delenv('environment\.nickname');
                    160:         $message.='Reset nickname';
                    161:     }
                    162: 
1.10      www       163:     my $bodytag=&Apache::loncommon::bodytag(
1.14      www       164:                     'Change Your Nickname and Anonymous Screen Name');
1.6       www       165:     $r->print(<<ENDVCSCREEN);
                    166: <html>
1.10      www       167: $bodytag
1.6       www       168: </p>
                    169: $message
                    170: </body></html>
                    171: ENDVCSCREEN
                    172: }
                    173: 
1.12      www       174: ################################################################
1.19    ! www       175: #         Colors                                               #
1.12      www       176: ################################################################
                    177: 
1.19    ! www       178: sub colorschanger {
1.12      www       179:     my $r = shift;
                    180:     my $bodytag=&Apache::loncommon::bodytag(
1.19    ! www       181:                     'Change Color Scheme for Current Role Type');
        !           182: # figure out colors
        !           183:     my $function='student';
        !           184:     if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
        !           185: 	$function='coordinator';
        !           186:     }
        !           187:     if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
        !           188: 	$function='admin';
        !           189:     }
        !           190:     if (($ENV{'request.role'}=~/^(au|ca)/) ||
        !           191: 	($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
        !           192: 	$function='author';
        !           193:     }
        !           194:     my $domain=&Apache::loncommon::determinedomain();
        !           195:     my %colortypes=('pgbg'  => 'Page Background',
        !           196:                     'tabbg' => 'Header Background',
        !           197:                     'sidebg'=> 'Header Border',
        !           198:                     'font'  => 'Font',
        !           199:                     'link'  => 'Un-Visited Link',
        !           200:                     'vlink' => 'Visited Link',
        !           201:                     'alink' => 'Active Link');
        !           202:     my $chtable='';
        !           203:     foreach my $item (keys %colortypes) {
        !           204:        my $curcol=&Apache::loncommon::designparm($function.'.'.$item,$domain);
        !           205:        $chtable.='<tr><td>'.$colortypes{$item}.'</td><td bgcolor="'.$curcol.
        !           206:         '">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td><td><input name="'.$item.
        !           207:         '" size="8" value="'.$curcol.
        !           208: '" /></td><td><a href="javascript:pjump('."'color','".$colortypes{$item}.
        !           209: "','".$curcol."','"
        !           210: 	    .$item."','".$item."','psub'".');">Select</a></td></tr>';
        !           211:     }
        !           212:     $r->print(<<ENDCOL);
1.12      www       213: <html>
1.19    ! www       214: <script>
        !           215: 
        !           216:     function pclose() {
        !           217:         parmwin=window.open("/adm/rat/empty.html","LONCAPAparms",
        !           218:                  "height=350,width=350,scrollbars=no,menubar=no");
        !           219:         parmwin.close();
        !           220:     }
        !           221: 
        !           222:     function pjump(type,dis,value,marker,ret,call) {
        !           223:         parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
        !           224:                  +"&value="+escape(value)+"&marker="+escape(marker)
        !           225:                  +"&return="+escape(ret)
        !           226:                  +"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
        !           227:                  "height=350,width=350,scrollbars=no,menubar=no");
        !           228: 
        !           229:     }
        !           230: 
        !           231:     function psub() {
        !           232:         pclose();
        !           233:         if (document.parmform.pres_marker.value!='') {
        !           234:             document.parmform.action+='#'+document.parmform.pres_marker.value;
        !           235:             var typedef=new Array();
        !           236:             typedef=document.parmform.pres_type.value.split('_');
        !           237:            if (document.parmform.pres_type.value!='') {
        !           238:             if (typedef[0]=='date') {
        !           239:                 eval('document.parmform.recent_'+
        !           240:                      document.parmform.pres_type.value+
        !           241: 		     '.value=document.parmform.pres_value.value;');
        !           242:             } else {
        !           243:                 eval('document.parmform.recent_'+typedef[0]+
        !           244: 		     '.value=document.parmform.pres_value.value;');
        !           245:             }
        !           246: 	   }
        !           247:             document.parmform.submit();
        !           248:         } else {
        !           249:             document.parmform.pres_value.value='';
        !           250:             document.parmform.pres_marker.value='';
        !           251:         }
        !           252:     }
        !           253: 
        !           254: 
        !           255: </script>
1.12      www       256: $bodytag
                    257: 
                    258: <form name="server" action="/adm/preferences" method="post">
1.19    ! www       259: <input type="hidden" name="action" value="verify_and_change_colors" />
        !           260: <table border="2">
        !           261: $chtable
        !           262: </table>
1.12      www       263: <input type="submit" value="Change" />
                    264: </form>
                    265: </body>
                    266: </html>
1.19    ! www       267: ENDCOL
1.12      www       268: }
                    269: 
1.19    ! www       270: sub verify_and_change_colors {
1.12      www       271:     my $r = shift;
1.19    ! www       272: # figure out colors
        !           273:     my $function='student';
        !           274:     if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
        !           275: 	$function='coordinator';
        !           276:     }
        !           277:     if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
        !           278: 	$function='admin';
        !           279:     }
        !           280:     if (($ENV{'request.role'}=~/^(au|ca)/) ||
        !           281: 	($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
        !           282: 	$function='author';
        !           283:     }
        !           284:     my $domain=&Apache::loncommon::determinedomain();
        !           285:     my %colortypes=('pgbg'  => 'Page Background',
        !           286:                     'tabbg' => 'Header Background',
        !           287:                     'sidebg'=> 'Header Border',
        !           288:                     'font'  => 'Font',
        !           289:                     'link'  => 'Un-Visited Link',
        !           290:                     'vlink' => 'Visited Link',
        !           291:                     'alink' => 'Active Link');
        !           292: 
1.12      www       293:     my $message='';
1.19    ! www       294: #    my $newscreen='';
        !           295: #    $newscreen=~s/\,$//;
        !           296: #    if ($newscreen) {
        !           297: #        &Apache::lonnet::put('environment',{'msgforward' => $newscreen});
        !           298: #        &Apache::lonnet::appenv('environment.msgforward' => $newscreen);
        !           299: #        $message.='Set new message forwarding to '.$newscreen.'<br />';
        !           300: #    } else {
        !           301: #        &Apache::lonnet::del('environment',['msgforward']);
        !           302: #        &Apache::lonnet::delenv('environment\.msgforward');
        !           303: #        $message.='Reset message forwarding<br />';
        !           304: #    }
        !           305: 
1.12      www       306:     my $bodytag=&Apache::loncommon::bodytag(
1.19    ! www       307:                            'Change Color Scheme for Current Role Type');
        !           308:     $r->print(<<ENDVCCOL);
1.12      www       309: <html>
                    310: $bodytag
                    311: </p>
                    312: $message
                    313: </body></html>
1.19    ! www       314: ENDVCCOL
1.12      www       315: }
                    316: 
1.4       matthew   317: ######################################################
                    318: #            password handler subroutines            #
                    319: ######################################################
1.3       matthew   320: sub passwordchanger {
1.4       matthew   321:     # This function is a bit of a mess....
1.3       matthew   322:     # Passwords are encrypted using londes.js (DES encryption)
                    323:     my $r = shift;
1.4       matthew   324:     my $errormessage = shift;
                    325:     $errormessage = ($errormessage || '');
1.3       matthew   326:     my $user       = $ENV{'user.name'};
                    327:     my $domain     = $ENV{'user.domain'};
                    328:     my $homeserver = $ENV{'user.home'};
                    329:     my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
                    330:     # Check for authentication types that allow changing of the password.
                    331:     return if ($currentauth !~ /^(unix|internal):/);
                    332:     #
                    333:     # Generate keys
                    334:     my ($lkey_cpass ,$ukey_cpass ) = &des_keys();
                    335:     my ($lkey_npass1,$ukey_npass1) = &des_keys();
                    336:     my ($lkey_npass2,$ukey_npass2) = &des_keys();
1.4       matthew   337:     # Store the keys in the log files
1.3       matthew   338:     my $lonhost = $r->dir_config('lonHostID');
                    339:     my $logtoken=Apache::lonnet::reply('tmpput:'
                    340: 				       .$ukey_cpass  . $lkey_cpass .'&'
                    341: 				       .$ukey_npass1 . $lkey_npass1.'&'
                    342: 				       .$ukey_npass2 . $lkey_npass2,
                    343: 				       $lonhost);
1.4       matthew   344:     # Hexify the keys for output as javascript variables
1.3       matthew   345:     $ukey_cpass = hex($ukey_cpass);
                    346:     $lkey_cpass = hex($lkey_cpass);
                    347:     $ukey_npass1= hex($ukey_npass1);
                    348:     $lkey_npass1= hex($lkey_npass1);
                    349:     $ukey_npass2= hex($ukey_npass2);
                    350:     $lkey_npass2= hex($lkey_npass2);
                    351:     # Output javascript to deal with passwords
1.4       matthew   352:     # Output DES javascript
1.9       matthew   353:     $r->print("<html><head>");
1.3       matthew   354:     {
                    355: 	my $include = $r->dir_config('lonIncludes');
                    356: 	my $jsh=Apache::File->new($include."/londes.js");
                    357: 	$r->print(<$jsh>);
                    358:     }
1.10      www       359:     my $bodytag=&Apache::loncommon::bodytag('Change Password','',
                    360:                                          'onLoad="init();"');
1.3       matthew   361:     $r->print(<<ENDFORM);
1.9       matthew   362: </head>
1.10      www       363: $bodytag
1.1       www       364: 
1.3       matthew   365: <script language="JavaScript">
                    366: 
                    367:     function send() {
                    368:         uextkey=this.document.client.elements.ukey_cpass.value;
                    369:         lextkey=this.document.client.elements.lkey_cpass.value;
                    370:         initkeys();
                    371: 
                    372:         this.document.server.elements.currentpass.value
                    373:             =crypted(this.document.client.elements.currentpass.value);
                    374: 
                    375:         uextkey=this.document.client.elements.ukey_npass1.value;
                    376:         lextkey=this.document.client.elements.lkey_npass1.value;
                    377:         initkeys();
                    378:         this.document.server.elements.newpass_1.value
                    379:             =crypted(this.document.client.elements.newpass_1.value);
                    380: 
                    381:         uextkey=this.document.client.elements.ukey_npass2.value;
                    382:         lextkey=this.document.client.elements.lkey_npass2.value;
                    383:         initkeys();
                    384:         this.document.server.elements.newpass_2.value
                    385:             =crypted(this.document.client.elements.newpass_2.value);
                    386: 
                    387:         this.document.server.submit();
                    388:     }
                    389: 
                    390: </script>
1.4       matthew   391: $errormessage
1.10      www       392: 
1.3       matthew   393: <p>
                    394: <!-- We seperate the forms into 'server' and 'client' in order to
                    395:      ensure that unencrypted passwords will not be sent out by a
                    396:      crappy browser -->
                    397: 
                    398: <form name="server" action="/adm/preferences" method="post">
                    399: <input type="hidden" name="logtoken"    value="$logtoken" />
                    400: <input type="hidden" name="action"      value="verify_and_change_pass" />
                    401: <input type="hidden" name="currentpass" value="" />
1.4       matthew   402: <input type="hidden" name="newpass_1"   value="" />
                    403: <input type="hidden" name="newpass_2"   value="" />
1.3       matthew   404: </form>
                    405: 
                    406: <form name="client" >
                    407: <table>
1.4       matthew   408: <tr><td align="right"> Current password:                      </td>
                    409:     <td><input type="password" name="currentpass" size="10"/> </td></tr>
                    410: <tr><td align="right"> New password:                          </td>
                    411:     <td><input type="password" name="newpass_1" size="10"  /> </td></tr>
                    412: <tr><td align="right"> Confirm password:                      </td>
                    413:     <td><input type="password" name="newpass_2" size="10"  /> </td></tr>
1.3       matthew   414: <tr><td colspan="2" align="center">
                    415:     <input type="button" value="Change Password" onClick="send();">
                    416: </table>
1.4       matthew   417: <input type="hidden" name="ukey_cpass"  value="$ukey_cpass" />
                    418: <input type="hidden" name="lkey_cpass"  value="$lkey_cpass" />
1.3       matthew   419: <input type="hidden" name="ukey_npass1" value="$ukey_npass1" />
                    420: <input type="hidden" name="lkey_npass1" value="$lkey_npass1" />
                    421: <input type="hidden" name="ukey_npass2" value="$ukey_npass2" />
                    422: <input type="hidden" name="lkey_npass2" value="$lkey_npass2" />
                    423: </form>
                    424: </p>
                    425: ENDFORM
                    426:     #
                    427:     return;
                    428: }
                    429: 
                    430: sub verify_and_change_password {
                    431:     my $r = shift;
                    432:     my $user       = $ENV{'user.name'};
                    433:     my $domain     = $ENV{'user.domain'};
                    434:     my $homeserver = $ENV{'user.home'};
                    435:     my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
1.4       matthew   436:     # Check for authentication types that allow changing of the password.
                    437:     return if ($currentauth !~ /^(unix|internal):/);
1.3       matthew   438:     #
1.4       matthew   439:     $r->print(<<ENDHEADER);
                    440: <html>
                    441: <head>
                    442: <title>LON-CAPA Preferences:  Change password for $user</title>
                    443: </head>
                    444: ENDHEADER
1.3       matthew   445:     #
                    446:     my $currentpass = $ENV{'form.currentpass'}; 
                    447:     my $newpass1    = $ENV{'form.newpass_1'}; 
                    448:     my $newpass2    = $ENV{'form.newpass_2'};
                    449:     my $logtoken    = $ENV{'form.logtoken'};
                    450:     # Check for empty data 
1.4       matthew   451:     unless (defined($currentpass) && 
                    452: 	    defined($newpass1)    && 
                    453: 	    defined($newpass2)    ){
                    454: 	&passwordchanger($r,"<p>\n<font color='#ff0000'>ERROR</font>".
                    455: 			 "Password data was blank.\n</p>");
1.3       matthew   456: 	return;
                    457:     }
1.16      albertel  458:     # Get the keys
                    459:     my $lonhost = $r->dir_config('lonHostID');
1.3       matthew   460:     my $tmpinfo = Apache::lonnet::reply('tmpget:'.$logtoken,$lonhost);
                    461:     if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
1.4       matthew   462:         # I do not a have a better idea about how to handle this
1.3       matthew   463: 	$r->print(<<ENDERROR);
                    464: <p>
                    465: <font color="#ff0000">ERROR:</font> Unable to retrieve stored token for
1.4       matthew   466: password decryption.  Please log out and try again.
1.3       matthew   467: </p>
                    468: ENDERROR
1.4       matthew   469:         # Probably should log an error here
1.3       matthew   470:         return;
                    471:     }
                    472:     my ($ckey,$n1key,$n2key)=split(/&/,$tmpinfo);
1.4       matthew   473:     # 
1.17      matthew   474:     $currentpass = &des_decrypt($ckey ,$currentpass);
                    475:     $newpass1    = &des_decrypt($n1key,$newpass1);
                    476:     $newpass2    = &des_decrypt($n2key,$newpass2);
1.4       matthew   477:     # 
1.3       matthew   478:     if ($newpass1 ne $newpass2) {
1.4       matthew   479: 	&passwordchanger($r,
                    480: 			 '<font color="#ff0000">ERROR:</font>'.
                    481: 			 'The new passwords you entered do not match.  '.
                    482: 			 'Please try again.');
                    483: 	return;
                    484:     }
                    485:     if (length($newpass1) < 7) {
                    486: 	&passwordchanger($r,
                    487: 			 '<font color="#ff0000">ERROR:</font>'.
                    488: 			 'Passwords must be a minimum of 7 characters long.  '.
                    489: 			 'Please try again.');
1.3       matthew   490: 	return;
                    491:     }
1.4       matthew   492:     #
                    493:     # Check for bad characters
                    494:     my $badpassword = 0;
                    495:     foreach (split(//,$newpass1)) {
                    496: 	$badpassword = 1 if ((ord($_)<32)||(ord($_)>126));
                    497:     }
                    498:     if ($badpassword) {
                    499: 	# I can't figure out how to enter bad characters on my browser.
                    500: 	&passwordchanger($r,<<ENDERROR);
                    501: <font color="#ff0000">ERROR:</font>
                    502: The password you entered contained illegal characters.<br />
                    503: Valid characters are: space and <br />
                    504: <pre>
                    505: !&quot;\#$%&amp;\'()*+,-./0123456789:;&lt;=&gt;?\@
                    506: ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_\`abcdefghijklmnopqrstuvwxyz{|}~
                    507: </pre>
                    508: ENDERROR
                    509:     }
                    510:     # 
                    511:     # Change the password (finally)
                    512:     my $result = &Apache::lonnet::changepass
                    513: 	($user,$domain,$currentpass,$newpass1,$homeserver);
                    514:     # Inform the user the password has (not?) been changed
                    515:     if ($result =~ /^ok$/) {
                    516: 	$r->print(<<"ENDTEXT");
1.9       matthew   517: <h2>The password for $user was successfully changed</h2>
1.4       matthew   518: ENDTEXT
                    519:     } else {
                    520: 	# error error: run in circles, scream and shout
                    521:         $r->print(<<ENDERROR);
1.9       matthew   522: <h2><font color="#ff0000">The password for $user was not changed</font></h2>
1.8       matthew   523: Please make sure your old password was entered correctly.
1.4       matthew   524: ENDERROR
                    525:     }
                    526:     return;
1.3       matthew   527: }
                    528: 
1.4       matthew   529: ######################################################
                    530: #            other handler subroutines               #
                    531: ######################################################
                    532: 
1.3       matthew   533: ################################################################
                    534: #                          Main handler                        #
                    535: ################################################################
1.1       www       536: sub handler {
                    537:     my $r = shift;
1.3       matthew   538:     my $user = $ENV{'user.name'};
                    539:     my $domain = $ENV{'user.domain'};
1.1       www       540:     $r->content_type('text/html');
1.4       matthew   541:     # Some pages contain DES keys and should not be cached.
                    542:     &Apache::loncommon::no_cache($r);
1.1       www       543:     $r->send_http_header;
                    544:     return OK if $r->header_only;
1.9       matthew   545:     #
1.3       matthew   546:     if ($ENV{'form.action'} eq 'changepass') {
                    547: 	&passwordchanger($r);
                    548:     } elsif ($ENV{'form.action'} eq 'verify_and_change_pass') {
                    549: 	&verify_and_change_password($r);
1.5       www       550:     } elsif ($ENV{'form.action'} eq 'changescreenname') {
                    551:         &screennamechanger($r);
1.6       www       552:     } elsif ($ENV{'form.action'} eq 'verify_and_change_screenname') {
                    553:         &verify_and_change_screenname($r);
1.12      www       554:     } elsif ($ENV{'form.action'} eq 'changemsgforward') {
                    555:         &msgforwardchanger($r);
                    556:     } elsif ($ENV{'form.action'} eq 'verify_and_change_msgforward') {
                    557:         &verify_and_change_msgforward($r);
1.19    ! www       558:     } elsif ($ENV{'form.action'} eq 'changecolors') {
        !           559:         &colorschanger($r);
        !           560:     } elsif ($ENV{'form.action'} eq 'verify_and_change_colors') {
        !           561:         &verify_and_change_colors($r);
1.15      albertel  562:     } elsif ($ENV{'form.action'} eq 'debugtoggle') {
                    563: 	if ($ENV{'user.name'} eq 'albertel' ) {
                    564: 	    if ($ENV{'user.debug'}) {
                    565: 		&Apache::lonnet::delenv('user\.debug');
                    566: 	    } else {
                    567: 		&Apache::lonnet::appenv('user.debug' => 1);
                    568: 	    }
                    569: 	}
1.3       matthew   570:     } else {
                    571: 	$r->print(<<ENDHEADER);
1.1       www       572: <html>
                    573: <head>
1.4       matthew   574: <title>LON-CAPA Preferences</title>
1.1       www       575: </head>
1.3       matthew   576: ENDHEADER
1.10      www       577:         $r->print(&Apache::loncommon::bodytag('Change Your Preferences'));
1.3       matthew   578: 	# Determine current authentication method
                    579: 	my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
                    580: 	if ($currentauth =~ /^(unix|internal):/) {
1.4       matthew   581: 	    $r->print(<<ENDPASSWORDFORM);
                    582: <form name="client" action="/adm/preferences" method="post">
1.14      www       583: <input type="hidden" name="action" value="changepass" />
                    584: <input type="submit" value="Change password" />
1.4       matthew   585: </form>
                    586: ENDPASSWORDFORM
1.13      www       587:         }
1.5       www       588: # Change screen name
                    589: 	    $r->print(<<ENDSCREENNAMEFORM);
                    590: <form name="client" action="/adm/preferences" method="post">
1.14      www       591: <input type="hidden" name="action" value="changescreenname" />
                    592: <input type="submit" 
                    593: value="Change nickname and anonymous discussion screen name" />
1.5       www       594: </form>
                    595: ENDSCREENNAMEFORM
1.12      www       596: 	    $r->print(<<ENDMSGFORWARDFORM);
                    597: <form name="client" action="/adm/preferences" method="post">
1.14      www       598: <input type="hidden" name="action" value="changemsgforward" />
1.18      www       599: <input type="submit" value="Change message forwarding and notification addresses" />
1.12      www       600: </form>
                    601: ENDMSGFORWARDFORM
1.11      www       602: # The "about me" page
1.15      albertel  603: 	my $aboutmeaction=
                    604: 	    '/adm/'.$ENV{'user.domain'}.'/'.$ENV{'user.name'}.'/aboutme';
                    605: 	$r->print(<<ENDABOUTME);
1.11      www       606: <form name="client" action="$aboutmeaction" method="post">
1.14      www       607: <input type="hidden" name="action" value="changescreenname" />
1.19    ! www       608: <input type="submit" value="Edit the 'About Me' personal information screen" />
1.11      www       609: </form>
                    610: ENDABOUTME
1.19    ! www       611: 	    $r->print(<<ENDCOLORFORM);
        !           612: <form name="client" action="/adm/preferences" method="post">
        !           613: <input type="hidden" name="action" value="changecolors" />
        !           614: <input type="submit" value="Change color scheme" />
        !           615: </form>
        !           616: ENDCOLORFORM
        !           617: 
1.15      albertel  618: 	if ($ENV{'user.name'} eq 'albertel') {
                    619: 	    $r->print(<<ENDDEBUG);
                    620: <form name="client" action="/adm/preferences" method="post">
                    621: <input type="hidden" name="action" value="debugtoggle" />
                    622: <input type="submit" value="Toggle Debug" />
                    623: Current Debug status is -$ENV{'user.debug'}-.
                    624: </form>
                    625: ENDDEBUG
                    626: 	}
                    627: 	# Other preference setting code should be added here
1.3       matthew   628:     }
                    629:     $r->print(<<ENDFOOTER);
1.1       www       630: </body>
                    631: </html>
1.3       matthew   632: ENDFOOTER
1.1       www       633:     return OK;
1.13      www       634: }
1.1       www       635: 
                    636: 1;
                    637: __END__

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