# The LearningOnline Network
# Preferences
#
# $Id: lonpreferences.pm,v 1.67 2005/08/16 16:31:09 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
# This package uses the "londes.js" javascript code.
#
# TODOs that have to be completed:
# interface with lonnet to change the password
package Apache::lonpreferences;
use strict;
use Apache::Constants qw(:common);
use Apache::File;
use Crypt::DES;
use DynaLoader; # for Crypt::DES version
use Apache::loncommon();
use Apache::lonhtmlcommon();
use Apache::lonlocal;
use Apache::lonnet;
#
# Write lonnet::passwd to do the call below.
# Use:
# my $answer=reply("encrypt:passwd:$udom:$uname:$upass",$tryserver);
#
##################################################
# password associated functions #
##################################################
sub des_keys {
# Make a new key for DES encryption.
# Each key has two parts which are returned separately.
# Please note: Each key must be passed through the &hex function
# before it is output to the web browser. The hex versions cannot
# be used to decrypt.
my @hexstr=('0','1','2','3','4','5','6','7',
'8','9','a','b','c','d','e','f');
my $lkey='';
for (0..7) {
$lkey.=$hexstr[rand(15)];
}
my $ukey='';
for (0..7) {
$ukey.=$hexstr[rand(15)];
}
return ($lkey,$ukey);
}
sub des_decrypt {
my ($key,$cyphertext) = @_;
my $keybin=pack("H16",$key);
my $cypher;
if ($Crypt::DES::VERSION>=2.03) {
$cypher=new Crypt::DES $keybin;
} else {
$cypher=new DES $keybin;
}
my $plaintext=
$cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,0,16))));
$plaintext.=
$cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,16,16))));
$plaintext=substr($plaintext,1,ord(substr($plaintext,0,1)) );
return $plaintext;
}
################################################################
# Handler subroutines #
################################################################
################################################################
# Language Change Subroutines #
################################################################
sub wysiwygchanger {
my $r = shift;
my %userenv = &Apache::lonnet::get
('environment',['wysiwygeditor']);
my $offselect='';
my $onselect='checked="1"';
if ($userenv{'wysiwygeditor'}) {
$onselect='';
$offselect='checked="1"';
}
my $switchoff=&mt('Disable WYSIWYG editor');
my $switchon=&mt('Enable WYSIWYG editor');
$r->print(<<ENDLSCREEN);
<form name="server" action="/adm/preferences" method="post">
<input type="hidden" name="action" value="set_wysiwyg" />
<br />
<label><input type="radio" name="wysiwyg" value="off" $onselect /> $switchoff</label><br />
<label><input type="radio" name="wysiwyg" value="on" $offselect /> $switchon</label>
ENDLSCREEN
$r->print('<br /><input type="submit" value="'.&mt('Change').'" />');
}
sub verify_and_change_wysiwyg {
my $r = shift;
my $newsetting=$env{'form.wysiwyg'};
&Apache::lonnet::put('environment',{'wysiwygeditor' => $newsetting});
&Apache::lonnet::appenv('environment.wysiwygeditor' => $newsetting);
$r->print('<p>'.&mt('Setting WYSIWYG editor to:').' '.&mt($newsetting).'</p>');
}
################################################################
# Language Change Subroutines #
################################################################
sub languagechanger {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my %userenv = &Apache::lonnet::get
('environment',['languages']);
my $language=$userenv{'languages'};
my $pref=&mt('Preferred language');
my %langchoices=('' => 'No language preference');
foreach (&Apache::loncommon::languageids()) {
if (&Apache::loncommon::supportedlanguagecode($_)) {
$langchoices{&Apache::loncommon::supportedlanguagecode($_)}
= &Apache::loncommon::plainlanguagedescription($_);
}
}
my $selectionbox=&Apache::loncommon::select_form($language,'language',
%langchoices);
$r->print(<<ENDLSCREEN);
<form name="server" action="/adm/preferences" method="post">
<input type="hidden" name="action" value="verify_and_change_languages" />
<br />$pref: $selectionbox
ENDLSCREEN
$r->print('<br /><input type="submit" value="'.&mt('Change').'" />');
}
sub verify_and_change_languages {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
# Screenname
my $newlanguage = $env{'form.language'};
$newlanguage=~s/[^\-\w]//g;
my $message='';
if ($newlanguage) {
&Apache::lonnet::put('environment',{'languages' => $newlanguage});
&Apache::lonnet::appenv('environment.languages' => $newlanguage);
$message='Set new preferred languages to '.$newlanguage;
} else {
&Apache::lonnet::del('environment',['languages']);
&Apache::lonnet::delenv('environment\.languages');
$message='Reset preferred language';
}
$r->print(<<ENDVCSCREEN);
$message
ENDVCSCREEN
}
################################################################
# Tex Engine Change Subroutines #
################################################################
sub texenginechanger {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my %userenv = &Apache::lonnet::get('environment',['texengine']);
my $texengine=$userenv{'texengine'};
my $pref=&mt('Preferred method to display Math');
my %mathchoices=('' => 'No Preference',
'tth' => 'TeX to HTML',
#'ttm' => 'TeX to MathML',
'jsMath' => 'jsMath',
'mimetex' => 'Convert to Images'
);
my $selectionbox=&Apache::loncommon::select_form($texengine,'texengine',
%mathchoices);
my $jsMath_start=&Apache::lontexconvert::jsMath_header();
my $change=&mt('Change');
$r->print(<<ENDLSCREEN);
<br />
<form name="server" action="/adm/preferences" method="post">
<input type="hidden" name="action" value="verify_and_change_texengine" />
<p>$pref: $selectionbox</p>
<p><input type="submit" value="$change" /></p>
</form>
Examples:
<p> TeX to HTML <br />
<iframe src="/res/adm/pages/math_example.tex?buttons=no&mode=tth" width="400" hieght="200"></iframe>
</p>
<p>jsMath <br />
$jsMath_start
<script type="text/javascript">
if (jsMath.nofonts == 1) {
document.writeln
('<center><div style="padding: 10; border-style: solid; border-width:3;'
+' border-color: #DD0000; background-color: #FFF8F8; width: 75%; text-align: left">'
+'<small><font color="#AA0000"><b>Warning:</b> '
+'It looks like you don\\\'t have the TeX math fonts installed. '
+'The jsMath example on this page may not look right without them. '
+'The <a href="http://www.math.union.edu/locate/jsMath/" target="_blank"> '
+'jsMath Home Page</a> has information on how to download the '
+'needed fonts. In the meantime, jsMath will do the best it can '
+'with the fonts you have, but it may not be pretty and some equations '
+'may not be rendered correctly. '
+'</font></small></div></center>');
}
</script>
<iframe src="/res/adm/pages/math_example.tex?buttons=no&mode=jsMath" width="400" hieght="200"></iframe>
</p>
<p> Convert to Images <br />
<br />
<iframe src="/res/adm/pages/math_example.tex?buttons=no&mode=mimetex" width="400" hieght="200"></iframe>
</p>
ENDLSCREEN
if ($env{'environment.texengine'} ne 'jsMath') {
$r->print('<script type="text/javascript">jsMath.Process()</script>');
}
}
sub verify_and_change_texengine {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
# Screenname
my $newtexengine = $env{'form.texengine'};
$newtexengine=~s/[^\-\w]//g;
if ($newtexengine eq 'ttm') {
&Apache::lonnet::appenv('browser.mathml' => 1);
} else {
if ($env{'environment.texengine'} eq 'ttm') {
&Apache::lonnet::appenv('browser.mathml' => 0);
}
}
my $message='';
if ($newtexengine) {
&Apache::lonnet::put('environment',{'texengine' => $newtexengine});
&Apache::lonnet::appenv('environment.texengine' => $newtexengine);
$message='Set new preferred math display to '.$newtexengine;
} else {
&Apache::lonnet::del('environment',['texengine']);
&Apache::lonnet::delenv('environment\.texengine');
$message='Reset preferred math display.';
}
$r->print(<<ENDVCSCREEN);
$message
ENDVCSCREEN
}
################################################################
# Roles Page Preference Change Subroutines #
################################################################
sub rolesprefchanger {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my %userenv = &Apache::lonnet::get
('environment',['recentroles','recentrolesn']);
my $hotlist_flag=$userenv{'recentroles'};
my $hotlist_n=$userenv{'recentrolesn'};
my $checked;
if ($hotlist_flag) {
$checked = 'checked="checked"';
}
if (!$hotlist_n) { $hotlist_n=3; }
my $options;
for (my $i=1; $i<10; $i++) {
my $select;
if ($hotlist_n == $i) { $select = 'selected="selected"'; }
$options .= "<option $select>$i</option>\n";
}
$r->print(<<ENDSCREEN);
<p>Some LON-CAPA users have a long list of roles. The Recent Roles Hotlist
feature keeps track of the last N roles which have been
visited and places a table of these at the top of the roles page.
People with very few roles should leave this feature disabled.
</p>
<form name="server" action="/adm/preferences" method="post">
<input type="hidden" name="action" value="verify_and_change_rolespref" />
<br />Enable Recent Roles Hotlist:
<input type="checkbox" $checked name="recentroles" value="true" />
<br />Number of roles in Hotlist:
<select name="recentrolesn" size="1">
$options
</select>
<br />
<input type="submit" value="Change" />
</form>
ENDSCREEN
}
sub verify_and_change_rolespref {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
# Recent Roles Hotlist Flag
my $hotlist_flag = $env{'form.recentroles'};
my $hotlist_n = $env{'form.recentrolesn'};
my $message='';
if ($hotlist_flag) {
&Apache::lonnet::put('environment',{'recentroles' => $hotlist_flag});
&Apache::lonnet::appenv('environment.recentroles' => $hotlist_flag);
$message='Recent Roles Hotlist is Enabled';
} else {
&Apache::lonnet::del('environment',['recentroles']);
&Apache::lonnet::delenv('environment\.recentroles');
$message='Recent Roles Hotlist is Disabled';
}
if ($hotlist_n) {
&Apache::lonnet::put('environment',{'recentrolesn' => $hotlist_n});
&Apache::lonnet::appenv('environment.recentrolesn' => $hotlist_n);
if ($hotlist_flag) {
$message.="<br />Display $hotlist_n Most Recent Roles\n";
}
}
$r->print(<<ENDRPSCREEN);
$message
ENDRPSCREEN
}
################################################################
# Anonymous Discussion Name Change Subroutines #
################################################################
sub screennamechanger {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my %userenv = &Apache::lonnet::get
('environment',['screenname','nickname']);
my $screenname=$userenv{'screenname'};
my $nickname=$userenv{'nickname'};
$r->print(<<ENDSCREEN);
<form name="server" action="/adm/preferences" method="post">
<input type="hidden" name="action" value="verify_and_change_screenname" />
<br />New screenname (shown if you post anonymously):
<input type="text" size="20" value="$screenname" name="screenname" />
<br />New nickname (shown if you post non-anonymously):
<input type="text" size="20" value="$nickname" name="nickname" />
<input type="submit" value="Change" />
</form>
ENDSCREEN
}
sub verify_and_change_screenname {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
# Screenname
my $newscreen = $env{'form.screenname'};
$newscreen=~s/[^ \w]//g;
my $message='';
if ($newscreen) {
&Apache::lonnet::put('environment',{'screenname' => $newscreen});
&Apache::lonnet::appenv('environment.screenname' => $newscreen);
$message='Set new screenname to '.$newscreen;
} else {
&Apache::lonnet::del('environment',['screenname']);
&Apache::lonnet::delenv('environment\.screenname');
$message='Reset screenname';
}
# Nickname
$message.='<br />';
$newscreen = $env{'form.nickname'};
$newscreen=~s/[^ \w]//g;
if ($newscreen) {
&Apache::lonnet::put('environment',{'nickname' => $newscreen});
&Apache::lonnet::appenv('environment.nickname' => $newscreen);
$message.='Set new nickname to '.$newscreen;
} else {
&Apache::lonnet::del('environment',['nickname']);
&Apache::lonnet::delenv('environment\.nickname');
$message.='Reset nickname';
}
$r->print(<<ENDVCSCREEN);
$message
ENDVCSCREEN
}
################################################################
# Message Forward #
################################################################
sub msgforwardchanger {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my %userenv = &Apache::lonnet::get('environment',['msgforward','notification','critnotification']);
my $msgforward=$userenv{'msgforward'};
my $notification=$userenv{'notification'};
my $critnotification=$userenv{'critnotification'};
my $forwardingHelp = Apache::loncommon::help_open_topic("Prefs_Forwarding",
"What are forwarding ".
"and notification ".
"addresses");
my $criticalMessageHelp = Apache::loncommon::help_open_topic("Course_Critical_Message",
"What are critical messages");
$r->print(<<ENDMSG);
$forwardingHelp <br />
<form name="server" action="/adm/preferences" method="post">
<input type="hidden" name="action" value="verify_and_change_msgforward" />
New Forwarding Address(es) (<tt>user:domain,user:domain,...</tt>):
<input type="text" size="40" value="$msgforward" name="msgforward" /><hr />
New Message Notification Email Address(es) (<tt>joe\@doe.com,jane\@doe.edu,...</tt>):
<input type="text" size="40" value="$notification" name="notification" /><hr />
New Critical Message Notification Email Address(es) (<tt>joe\@doe.com,jane\@doe.edu,...</tt>):
<input type="text" size="40" value="$critnotification" name="critnotification" />$criticalMessageHelp<hr />
<input type="submit" value="Change" />
</form>
ENDMSG
}
sub verify_and_change_msgforward {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my $newscreen = '';
my $message='';
foreach (split(/\,/,$env{'form.msgforward'})) {
my ($msuser,$msdomain)=split(/[\@\:]/,$_);
$msuser=~s/\W//g;
$msdomain=~s/\W//g;
if (($msuser) && ($msdomain)) {
if (&Apache::lonnet::homeserver($msuser,$msdomain) ne 'no_host') {
$newscreen.=$msuser.':'.$msdomain.',';
} else {
$message.='No such user: '.$msuser.':'.$msdomain.'<br>';
}
}
}
$newscreen=~s/\,$//;
if ($newscreen) {
&Apache::lonnet::put('environment',{'msgforward' => $newscreen});
&Apache::lonnet::appenv('environment.msgforward' => $newscreen);
$message.='Set new message forwarding to '.$newscreen.'<br />';
} else {
&Apache::lonnet::del('environment',['msgforward']);
&Apache::lonnet::delenv('environment\.msgforward');
$message.='Reset message forwarding<br />';
}
my $notification=$env{'form.notification'};
$notification=~s/\s//gs;
if ($notification) {
&Apache::lonnet::put('environment',{'notification' => $notification});
&Apache::lonnet::appenv('environment.notification' => $notification);
$message.='Set message notification address to '.$notification.'<br />';
} else {
&Apache::lonnet::del('environment',['notification']);
&Apache::lonnet::delenv('environment\.notification');
$message.='Reset message notification<br />';
}
my $critnotification=$env{'form.critnotification'};
$critnotification=~s/\s//gs;
if ($critnotification) {
&Apache::lonnet::put('environment',{'critnotification' => $critnotification});
&Apache::lonnet::appenv('environment.critnotification' => $critnotification);
$message.='Set critical message notification address to '.$critnotification;
} else {
&Apache::lonnet::del('environment',['critnotification']);
&Apache::lonnet::delenv('environment\.critnotification');
$message.='Reset critical message notification<br />';
}
$r->print(<<ENDVCMSG);
$message
ENDVCMSG
}
################################################################
# Colors #
################################################################
sub colorschanger {
my $r = shift;
# figure out colors
my $function='student';
if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
$function='coordinator';
}
if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
$function='admin';
}
if (($env{'request.role'}=~/^(au|ca)/) ||
($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
$function='author';
}
my $domain=&Apache::loncommon::determinedomain();
my %colortypes=('pgbg' => 'Page Background',
'tabbg' => 'Header Background',
'sidebg'=> 'Header Border',
'font' => 'Font',
'link' => 'Un-Visited Link',
'vlink' => 'Visited Link',
'alink' => 'Active Link');
my $chtable='';
foreach my $item (sort(keys(%colortypes))) {
my $curcol=&Apache::loncommon::designparm($function.'.'.$item,$domain);
$chtable.='<tr><td>'.$colortypes{$item}.'</td><td bgcolor="'.$curcol.
'"> </td><td><input name="'.$item.
'" size="10" value="'.$curcol.
'" /></td><td><a href="javascript:pjump('."'color_custom','".$colortypes{$item}.
"','".$curcol."','"
.$item."','parmform.pres','psub'".');">Select</a></td></tr>';
}
my $pjump_def = &Apache::lonhtmlcommon::pjump_javascript_definition();
$r->print(<<ENDCOL);
<script>
function pclose() {
parmwin=window.open("/adm/rat/empty.html","LONCAPAparms",
"height=350,width=350,scrollbars=no,menubar=no");
parmwin.close();
}
$pjump_def
function psub() {
pclose();
if (document.parmform.pres_marker.value!='') {
if (document.parmform.pres_type.value!='') {
eval('document.server.'+
document.parmform.pres_marker.value+
'.value=document.parmform.pres_value.value;');
}
} else {
document.parmform.pres_value.value='';
document.parmform.pres_marker.value='';
}
}
</script>
<form name="parmform">
<input type="hidden" name="pres_marker" />
<input type="hidden" name="pres_type" />
<input type="hidden" name="pres_value" />
</form>
<form name="server" action="/adm/preferences" method="post">
<input type="hidden" name="action" value="verify_and_change_colors" />
<table border="2">
$chtable
</table>
<input type="submit" value="Change Custom Colors" />
<input type="submit" name="resetall" value="Reset All Colors to Default" />
</form>
ENDCOL
}
sub verify_and_change_colors {
my $r = shift;
# figure out colors
my $function='student';
if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
$function='coordinator';
}
if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
$function='admin';
}
if (($env{'request.role'}=~/^(au|ca)/) ||
($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
$function='author';
}
my $domain=&Apache::loncommon::determinedomain();
my %colortypes=('pgbg' => 'Page Background',
'tabbg' => 'Header Background',
'sidebg'=> 'Header Border',
'font' => 'Font',
'link' => 'Un-Visited Link',
'vlink' => 'Visited Link',
'alink' => 'Active Link');
my $message='';
foreach my $item (keys %colortypes) {
my $color=$env{'form.'.$item};
my $entry='color.'.$function.'.'.$item;
if (($color=~/^\#[0-9A-Fa-f]{6}$/) && (!$env{'form.resetall'})) {
&Apache::lonnet::put('environment',{$entry => $color});
&Apache::lonnet::appenv('environment.'.$entry => $color);
$message.='Set '.$colortypes{$item}.' to '.$color.'<br />';
} else {
&Apache::lonnet::del('environment',[$entry]);
&Apache::lonnet::delenv('environment\.'.$entry);
$message.='Reset '.$colortypes{$item}.'<br />';
}
}
$r->print(<<ENDVCCOL);
$message
<form name="client" action="/adm/preferences" method="post">
<input type="hidden" name="action" value="changecolors" />
</form>
ENDVCCOL
}
######################################################
# password handler subroutines #
######################################################
sub passwordchanger {
# This function is a bit of a mess....
# Passwords are encrypted using londes.js (DES encryption)
my $r = shift;
my $errormessage = shift;
$errormessage = ($errormessage || '');
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my $homeserver = $env{'user.home'};
my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
# Check for authentication types that allow changing of the password.
return if ($currentauth !~ /^(unix|internal):/);
#
# Generate keys
my ($lkey_cpass ,$ukey_cpass ) = &des_keys();
my ($lkey_npass1,$ukey_npass1) = &des_keys();
my ($lkey_npass2,$ukey_npass2) = &des_keys();
# Store the keys in the log files
my $lonhost = $r->dir_config('lonHostID');
my $logtoken=Apache::lonnet::reply('tmpput:'
.$ukey_cpass . $lkey_cpass .'&'
.$ukey_npass1 . $lkey_npass1.'&'
.$ukey_npass2 . $lkey_npass2,
$lonhost);
# Hexify the keys for output as javascript variables
$ukey_cpass = hex($ukey_cpass);
$lkey_cpass = hex($lkey_cpass);
$ukey_npass1= hex($ukey_npass1);
$lkey_npass1= hex($lkey_npass1);
$ukey_npass2= hex($ukey_npass2);
$lkey_npass2= hex($lkey_npass2);
# Output javascript to deal with passwords
# Output DES javascript
my $html=&Apache::lonxml::xmlbegin();
$r->print($html."<head>");
{
my $include = $r->dir_config('lonIncludes');
my $jsh=Apache::File->new($include."/londes.js");
$r->print(<$jsh>);
}
$r->print(<<ENDFORM);
<script language="JavaScript">
function send() {
uextkey=this.document.client.elements.ukey_cpass.value;
lextkey=this.document.client.elements.lkey_cpass.value;
initkeys();
this.document.pserver.elements.currentpass.value
=crypted(this.document.client.elements.currentpass.value);
uextkey=this.document.client.elements.ukey_npass1.value;
lextkey=this.document.client.elements.lkey_npass1.value;
initkeys();
this.document.pserver.elements.newpass_1.value
=crypted(this.document.client.elements.newpass_1.value);
uextkey=this.document.client.elements.ukey_npass2.value;
lextkey=this.document.client.elements.lkey_npass2.value;
initkeys();
this.document.pserver.elements.newpass_2.value
=crypted(this.document.client.elements.newpass_2.value);
this.document.pserver.submit();
}
</script>
$errormessage
<p>
<!-- We separate the forms into 'server' and 'client' in order to
ensure that unencrypted passwords will not be sent out by a
crappy browser -->
<form name="pserver" action="/adm/preferences" method="post">
<input type="hidden" name="logtoken" value="$logtoken" />
<input type="hidden" name="action" value="verify_and_change_pass" />
<input type="hidden" name="currentpass" value="" />
<input type="hidden" name="newpass_1" value="" />
<input type="hidden" name="newpass_2" value="" />
</form>
<form name="client" >
<table>
<tr><td align="right"> Current password: </td>
<td><input type="password" name="currentpass" size="10"/> </td></tr>
<tr><td align="right"> New password: </td>
<td><input type="password" name="newpass_1" size="10" /> </td></tr>
<tr><td align="right"> Confirm password: </td>
<td><input type="password" name="newpass_2" size="10" /> </td></tr>
<tr><td colspan="2" align="center">
<input type="button" value="Change Password" onClick="send();">
</table>
<input type="hidden" name="ukey_cpass" value="$ukey_cpass" />
<input type="hidden" name="lkey_cpass" value="$lkey_cpass" />
<input type="hidden" name="ukey_npass1" value="$ukey_npass1" />
<input type="hidden" name="lkey_npass1" value="$lkey_npass1" />
<input type="hidden" name="ukey_npass2" value="$ukey_npass2" />
<input type="hidden" name="lkey_npass2" value="$lkey_npass2" />
</form>
</p>
ENDFORM
#
return;
}
sub verify_and_change_password {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my $homeserver = $env{'user.home'};
my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
# Check for authentication types that allow changing of the password.
return if ($currentauth !~ /^(unix|internal):/);
#
my $html=&Apache::lonxml::xmlbegin();
$r->print(<<ENDHEADER);
$html
<head>
<title>LON-CAPA Preferences: Change password for $user</title>
</head>
ENDHEADER
#
my $currentpass = $env{'form.currentpass'};
my $newpass1 = $env{'form.newpass_1'};
my $newpass2 = $env{'form.newpass_2'};
my $logtoken = $env{'form.logtoken'};
# Check for empty data
unless (defined($currentpass) &&
defined($newpass1) &&
defined($newpass2) ){
&passwordchanger($r,"<p>\n<font color='#ff0000'>ERROR</font>".
"Password data was blank.\n</p>");
return;
}
# Get the keys
my $lonhost = $r->dir_config('lonHostID');
my $tmpinfo = Apache::lonnet::reply('tmpget:'.$logtoken,$lonhost);
if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
# I do not a have a better idea about how to handle this
$r->print(<<ENDERROR);
<p>
<font color="#ff0000">ERROR:</font> Unable to retrieve stored token for
password decryption. Please log out and try again.
</p>
ENDERROR
# Probably should log an error here
return;
}
my ($ckey,$n1key,$n2key)=split(/&/,$tmpinfo);
#
$currentpass = &des_decrypt($ckey ,$currentpass);
$newpass1 = &des_decrypt($n1key,$newpass1);
$newpass2 = &des_decrypt($n2key,$newpass2);
#
if ($newpass1 ne $newpass2) {
&passwordchanger($r,
'<font color="#ff0000">ERROR:</font>'.
'The new passwords you entered do not match. '.
'Please try again.');
return;
}
if (length($newpass1) < 7) {
&passwordchanger($r,
'<font color="#ff0000">ERROR:</font>'.
'Passwords must be a minimum of 7 characters long. '.
'Please try again.');
return;
}
#
# Check for bad characters
my $badpassword = 0;
foreach (split(//,$newpass1)) {
$badpassword = 1 if ((ord($_)<32)||(ord($_)>126));
}
if ($badpassword) {
# I can't figure out how to enter bad characters on my browser.
&passwordchanger($r,<<ENDERROR);
<font color="#ff0000">ERROR:</font>
The password you entered contained illegal characters.<br />
Valid characters are: space and <br />
<pre>
!"\#$%&\'()*+,-./0123456789:;<=>?\@
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_\`abcdefghijklmnopqrstuvwxyz{|}~
</pre>
ENDERROR
}
#
# Change the password (finally)
my $result = &Apache::lonnet::changepass
($user,$domain,$currentpass,$newpass1,$homeserver);
# Inform the user the password has (not?) been changed
if ($result =~ /^ok$/) {
$r->print(<<"ENDTEXT");
<h2>The password for $user was successfully changed</h2>
ENDTEXT
} else {
# error error: run in circles, scream and shout
$r->print(<<ENDERROR);
<h2><font color="#ff0000">The password for $user was not changed</font></h2>
Please make sure your old password was entered correctly.
ENDERROR
}
return;
}
################################################################
# discussion display subroutines
################################################################
sub discussionchanger {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my %userenv = &Apache::lonnet::get
('environment',['discdisplay','discmarkread']);
my $discdisp = 'allposts';
my $discmark = 'onmark';
if (defined($userenv{'discdisplay'})) {
unless ($userenv{'discdisplay'} eq '') {
$discdisp = $userenv{'discdisplay'};
}
}
if (defined($userenv{'discmarkread'})) {
unless ($userenv{'discdisplay'} eq '') {
$discmark = $userenv{'discmarkread'};
}
}
my $newdisp = 'unread';
my $newmark = 'ondisp';
my $function = &Apache::loncommon::get_users_function();
my $color = &Apache::loncommon::designparm($function.'.tabbg',
$env{'user.domain'});
my %lt = &Apache::lonlocal::texthash(
'pref' => 'Display Preference',
'curr' => 'Current setting ',
'actn' => 'Action',
'sdpf' => 'Set display preferences for discussion posts for both bulletin boards and individual resources in all your courses.',
'prca' => 'Preferences can be set that determine',
'whpo' => 'Which posts are displayed when you display a bulletin board or resource, and',
'unwh' => 'Under what circumstances posts are identfied as "New"',
'allposts' => 'All posts',
'unread' => 'New posts only',
'ondisp' => 'Once displayed',
'onmark' => 'Once marked as read',
'disa' => 'Posts displayed?',
'npmr' => 'New posts cease to be identified as "New"?',
'thde' => 'The preferences you set here can be overridden within each individual discussion.',
'chgt' => 'Change to '
);
my $dispchange = $lt{'unread'};
my $markchange = $lt{'ondisp'};
my $currdisp = $lt{'allposts'};
my $currmark = $lt{'onmark'};
if ($discdisp eq 'unread') {
$dispchange = $lt{'allposts'};
$currdisp = $lt{'unread'};
$newdisp = 'allposts';
}
if ($discmark eq 'ondisp') {
$markchange = $lt{'onmark'};
$currmark = $lt{'ondisp'};
$newmark = 'onmark';
}
$r->print(<<"END");
<form name="server" action="/adm/preferences" method="post">
<input type="hidden" name="action" value="verify_and_change_discussion" />
<br />
$lt{'sdpf'}<br/> $lt{'prca'} <ol><li>$lt{'whpo'}</li><li>$lt{'unwh'}</li></ol>
<br />
<br />
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="100%" bgcolor="#000000">
<table width="100%" border="0" cellpadding="1" cellspacing="0">
<tr>
<td width="100%" bgcolor="#000000">
<table border="0" cellpadding="3" cellspacing="3" bgcolor="#FFFFFF">
<tr bgcolor="$color">
<td><b>$lt{'pref'}</b></td>
<td><b>$lt{'curr'}</b></td>
<td><b>$lt{'actn'}?</b></td>
</tr>
<tr bgcolor="#dddddd">
<td>$lt{'disa'}</td>
<td>$lt{$discdisp}</td>
<td><input type="checkbox" name="discdisp" /><input type="hidden" name="newdisp" value="$newdisp" /> $lt{'chgt'} "$dispchange"</td>
</tr><tr bgcolor="#eeeeee">
<td>$lt{'npmr'}</td>
<td>$lt{$discmark}</td>
<td><input type="checkbox" name="discmark" /><input type="hidden" name="newmark" value="$newmark" /> $lt{'chgt'} "$markchange"</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
<br />
<br />
<input type="submit" name="sub" value="Store Changes" />
<br />
<br />
Note: $lt{'thde'}
</form>
END
}
sub verify_and_change_discussion {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my $message='';
if (defined($env{'form.discdisp'}) ) {
my $newdisp = $env{'form.newdisp'};
if ($newdisp eq 'unread') {
$message .='In discussions: only new posts will be displayed.<br/>';
&Apache::lonnet::put('environment',{'discdisplay' => $newdisp});
&Apache::lonnet::appenv('environment.discdisplay' => $newdisp);
} else {
$message .= 'In discussions: all posts will be displayed.<br/>';
&Apache::lonnet::del('environment',['discdisplay']);
&Apache::lonnet::delenv('environment\.discdisplay');
}
}
if (defined($env{'form.discmark'}) ) {
my $newmark = $env{'form.newmark'};
if ($newmark eq 'ondisp') {
$message.='In discussions: new posts will be cease to be identified as "new" after display.<br/>';
&Apache::lonnet::put('environment',{'discmarkread' => $newmark});
&Apache::lonnet::appenv('environment.discmarkread' => $newmark);
} else {
$message.='In discussions: posts will be identified as "new" until marked as read by the reader.<br/>';
&Apache::lonnet::del('environment',['discmarkread']);
&Apache::lonnet::delenv('environment\.discmarkread');
}
}
$r->print(<<ENDVCSCREEN);
$message
ENDVCSCREEN
}
################################################################
# Subroutines for page display on course access (Course Coordinators)
################################################################
sub coursedisplaychanger {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
my %userenv = &Apache::lonnet::get('environment',['course_init_display']);
my $firstselect='checked="checked"';
my $whatsnewselect='';
if ($userenv{'course_init_display'} ne 'firstres') {
$firstselect='';
$whatsnewselect='checked="checked"';
}
my $whatsnew_off=&mt('Display the first resource in the course.');
my $whatsnew_on=&mt('Display a summary of items in the course which require action from the course coordinator.');
$r->print('<br /><b>'.&mt('Set the page to be displayed when you select the role of Course Coordinator').':</b>');
$r->print(<<ENDLSCREEN);
<form name="server" action="/adm/preferences" method="post">
<input type="hidden" name="action" value="verify_and_change_coursepage" />
<label><input type="radio" name="newdisp" value="firstres" $firstselect /> $whatsnew_off</label><br />
<label><input type="radio" name="newdisp" value="whatsnew" $whatsnewselect /> $whatsnew_on</label>
ENDLSCREEN
$r->print('<br /><input type="submit" value="'.&mt('Change').'" />
</form>');
}
sub verify_and_change_coursepage {
my $r = shift;
my $message='';
my %lt = &Apache::lonlocal::texthash(
'when' => 'Whenever you select the Course Coordinator role from the roles screen',
'ywbt' => 'you will be taken to the start of the course.',
'apwb' => 'a page will be displayed that lists items in the course that may require action from you.',
'gtts' => 'Go to the start of the course',
'dasp' => 'Display a summary page listing course action items',
);
my $newdisp = $env{'form.newdisp'};
if ($newdisp eq 'firstres') {
$message .= $lt{'when'}.', '.$lt{'ywbt'}.'<br/>';
&Apache::lonnet::put('environment',{'course_init_display' => $newdisp});
&Apache::lonnet::appenv('environment.course_init_display' => $newdisp);
} else {
$message .= $lt{'when'}.', '.$lt{'apwb'}.'<br/>';
&Apache::lonnet::del('environment',['course_init_display']);
&Apache::lonnet::delenv('environment\.course_init_display');
}
if (($env{'request.course.fn'}) && ($env{'request.course.id'})) {
if ($newdisp eq 'firstres') {
my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
my ($furl,$ferr)=
&Apache::lonuserstate::readmap($cdom.'/'.$cnum);
$message .= '<br /><font size="+1"><a href="'.$furl.'">'.$lt{'gtts'}.' <i>'.&mt('now').'</i></a></font>';
} else {
$message .= '<br /><font size="+1"><a href="/adm/whatsnew">'.$lt{'dasp'}.'</a></font>';
}
}
$r->print(<<ENDVCSCREEN);
$message
<br /><br />
ENDVCSCREEN
}
######################################################
# other handler subroutines #
######################################################
################################################################
# Main handler #
################################################################
sub handler {
my $r = shift;
my $user = $env{'user.name'};
my $domain = $env{'user.domain'};
&Apache::loncommon::content_type($r,'text/html');
# Some pages contain DES keys and should not be cached.
&Apache::loncommon::no_cache($r);
$r->send_http_header;
return OK if $r->header_only;
#
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['action','wysiwyg','returnurl']);
#
&Apache::lonhtmlcommon::clear_breadcrumbs();
&Apache::lonhtmlcommon::add_breadcrumb
({href => '/adm/preferences',
text => 'Set User Preferences'});
my @Options;
# Determine current authentication method
my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
if ($currentauth =~ /^(unix|internal):/) {
push (@Options,({ action => 'changepass',
linktext => 'Change Password',
href => '/adm/preferences',
help => 'Change_Password',
subroutine => \&passwordchanger,
breadcrumb =>
{ href => '/adm/preferences?action=changepass',
text => 'Change Password'},
},
{ action => 'verify_and_change_pass',
subroutine => \&verify_and_change_password,
breadcrumb =>
{ href =>'/adm/preferences?action=changepass',
text => 'Change Password'},
printmenu => 'yes',
}));
}
push (@Options,({ action => 'changescreenname',
linktext => 'Change Screen Name',
href => '/adm/preferences',
help => 'Prefs_Screen_Name_Nickname',
subroutine => \&screennamechanger,
breadcrumb =>
{ href => '/adm/preferences?action=changescreenname',
text => 'Change Screen Name'},
},
{ action => 'verify_and_change_screenname',
subroutine => \&verify_and_change_screenname,
breadcrumb =>
{ href => '/adm/preferences?action=changescreenname',
text => 'Change Screen Name'},
printmenu => 'yes',
}));
push (@Options,({ action => 'changemsgforward',
linktext => 'Change Message Forwarding and Notification Addresses',
href => '/adm/preferences',
help => 'Prefs_Forwarding',
breadcrumb =>
{ href => '/adm/preferences?action=changemsgforward',
text => 'Change Message Forwarding'},
subroutine => \&msgforwardchanger,
},
{ action => 'verify_and_change_msgforward',
breadcrumb =>
{ href => '/adm/preferences?action=changemsgforward',
text => 'Change Message Forwarding'},
printmenu => 'yes',
subroutine => \&verify_and_change_msgforward }));
my $aboutmeaction=
'/adm/'.$env{'user.domain'}.'/'.$env{'user.name'}.'/aboutme';
push (@Options,{ action => 'none',
linktext =>
q{Edit the 'About Me' Personal Information Screen},
help => 'Prefs_About_Me',
href => $aboutmeaction});
push (@Options,({ action => 'changecolors',
linktext => 'Change Color Scheme',
href => '/adm/preferences',
help => 'Change_Colors',
breadcrumb =>
{ href => '/adm/preferences?action=changecolors',
text => 'Change Colors'},
subroutine => \&colorschanger,
},
{ action => 'verify_and_change_colors',
breadcrumb =>
{ href => '/adm/preferences?action=changecolors',
text => 'Change Colors'},
printmenu => 'yes',
subroutine => \&verify_and_change_colors,
}));
push (@Options,({ action => 'changelanguages',
linktext => 'Change Language Preferences',
href => '/adm/preferences',
help => 'Prefs_Language',
breadcrumb=>
{ href => '/adm/preferences?action=changelanguages',
text => 'Change Language'},
subroutine => \&languagechanger,
},
{ action => 'verify_and_change_languages',
breadcrumb=>
{href => '/adm/preferences?action=changelanguages',
text => 'Change Language'},
printmenu => 'yes',
subroutine=>\&verify_and_change_languages, }
));
push (@Options,({ action => 'changewysiwyg',
linktext => 'Change WYSIWYG Editor Preferences',
href => '/adm/preferences',
breadcrumb =>
{ href => '/adm/preferences?action=changewysiwyg',
text => 'Change WYSIWYG Preferences'},
subroutine => \&wysiwygchanger,
},
{ action => 'set_wysiwyg',
breadcrumb =>
{ href => '/adm/preferences?action=changewysiwyg',
text => 'Change WYSIWYG Preferences'},
printmenu => 'yes',
subroutine => \&verify_and_change_wysiwyg, }
));
push (@Options,({ action => 'changediscussions',
linktext => 'Change Discussion Display Preferences',
href => '/adm/preferences',
help => 'Change_Discussion_Display',
breadcrumb =>
{ href => '/adm/preferences?action=changediscussions',
text => 'Change Discussion Preferences'},
subroutine => \&discussionchanger,
},
{ action => 'verify_and_change_discussion',
breadcrumb =>
{ href => '/adm/preferences?action=changediscussions',
text => 'Change Discussion Preferences'},
printmenu => 'yes',
subroutine => \&verify_and_change_discussion, }
));
push (@Options,({ action => 'changerolespref',
linktext => 'Change Roles Page Preferences',
href => '/adm/preferences',
subroutine => \&rolesprefchanger,
breadcrumb =>
{ href => '/adm/preferences?action=changerolespref',
text => 'Change Roles Pref'},
},
{ action => 'verify_and_change_rolespref',
subroutine => \&verify_and_change_rolespref,
breadcrumb =>
{ href => '/adm/preferences?action=changerolespref',
text => 'Change Roles Preferences'},
printmenu => 'yes',
}));
push (@Options,({ action => 'changetexenginepref',
linktext => 'Change How Math Equations Are Displayed',
href => '/adm/preferences',
subroutine => \&texenginechanger,
breadcrumb =>
{ href => '/adm/preferences?action=changetexenginepref',
text => 'Change Math Pref'},
},
{ action => 'verify_and_change_texengine',
subroutine => \&verify_and_change_texengine,
breadcrumb =>
{ href => '/adm/preferences?action=changetexenginepref',
text => 'Change Math Preferences'},
printmenu => 'yes',
}));
if($env{'request.role'} =~ /^cc\.\//) {
push (@Options,({ action => 'changecourseinit',
linktext => 'Change Course Initialization Preference',
href => '/adm/preferences',
subroutine => \&coursedisplaychanger,
breadcrumb =>
{ href => '/adm/preferences?action=changecourseinit',
text => 'Change Course Init. Pref.'},
},
{ action => 'verify_and_change_coursepage',
breadcrumb =>
{ href => '/adm/preferences?action=changecourseinit', text => 'Change Course Initialization Preference'},
printmenu => 'yes',
subroutine => \&verify_and_change_coursepage,
}));
}
if ($env{'user.name'} =~ /^(albertel|fox|foxr|koretemey|korte|hallmat3|turtle|raeburn)$/) {
push (@Options,({ action => 'debugtoggle',
printmenu => 'yes',
subroutine => \&toggle_debug,
}));
}
my $html=&Apache::lonxml::xmlbegin();
$r->print(<<ENDHEADER);
$html
<head>
<title>LON-CAPA Preferences</title>
</head>
ENDHEADER
my $call = undef;
my $help = undef;
my $printmenu = 'yes';
foreach my $option (@Options) {
if ($option->{'action'} eq $env{'form.action'}) {
$call = $option->{'subroutine'};
$printmenu = $option->{'printmenu'};
if (exists($option->{'breadcrumb'})) {
&Apache::lonhtmlcommon::add_breadcrumb
($option->{'breadcrumb'});
}
$help=$option->{'help'};
}
}
$r->print(&Apache::loncommon::bodytag('Change Preferences'));
$r->print(&Apache::lonhtmlcommon::breadcrumbs
(undef,'Change Preferences',$help));
if (defined($call)) {
$call->($r);
}
if (($printmenu eq 'yes') && (!$env{'form.returnurl'})) {
my $optionlist = '<table cellpadding="5">';
if ($env{'user.name'} =~
/^(albertel|kortemey|fox|foxr|korte|hallmat3|turtle|raeburn)$/
) {
push (@Options,({ action => 'debugtoggle',
linktext => 'Toggle Debug Messages',
text => 'Current Debug status is -'.
$env{'user.debug'}.'-.',
href => '/adm/preferences',
printmenu => 'yes',
subroutine => \&toggle_debug,
}));
}
foreach my $option(@Options) {
my $optiontext = '';
if (exists($option->{'href'})) {
$optiontext .=
'<a href="'.$option->{'href'}.
'?action='.$option->{'action'}.'">'.
&mt($option->{'linktext'}).'</a>';
}
if (exists($option->{'text'})) {
$optiontext .= ' '.&mt($option->{'text'});
}
if ($optiontext ne '') {
$optiontext = '<font size="+1">'.$optiontext.'</font>';
my $helplink = ' ';
if (exists($option->{'help'})) {
$helplink = &Apache::loncommon::help_open_topic
($option->{'help'});
}
$optionlist .= '<tr>'.
'<td>'.$helplink.'</td>'.
'<td>'.$optiontext.'</td>'.
'</tr>';
}
}
$optionlist .= '</table>';
$r->print($optionlist);
} elsif ($env{'form.returnurl'}) {
$r->print('<br /><a href="'.$env{'form.returnurl'}.'"><font size="+1">'.
&mt('Return').'</font></a>');
}
$r->print(&Apache::loncommon::endbodytag().'</html>');
return OK;
}
sub toggle_debug {
if ($env{'user.debug'}) {
&Apache::lonnet::delenv('user\.debug');
} else {
&Apache::lonnet::appenv('user.debug' => 1);
}
}
1;
__END__
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