Diff for /loncom/interface/lonpreferences.pm between versions 1.8 and 1.174

version 1.8, 2002/04/30 14:03:52 version 1.174, 2009/10/08 22:37:33
Line 25 Line 25
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
 # (Internal Server Error Handler  
 #  
 # (Login Screen  
 # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,  
 # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)  
 #  
 # 3/1/1 Gerd Kortemeyer)  
 #  
 # 3/1 Gerd Kortemeyer  
 #  
 # 2/13/02 2/14 2/15 Matthew Hall  
 #  
 # This package uses the "londes.js" javascript code.   # This package uses the "londes.js" javascript code. 
 #  #
 # TODOs that have to be completed:  # TODOs that have to be completed:
Line 45 Line 33
 package Apache::lonpreferences;  package Apache::lonpreferences;
   
 use strict;  use strict;
   use LONCAPA;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::File;  use Apache::File;
 use Crypt::DES;  use Crypt::DES;
 use DynaLoader; # for Crypt::DES version  use DynaLoader; # for Crypt::DES version
 use Apache::loncommon();  use Apache::loncommon();
   use Apache::lonhtmlcommon();
   use Apache::lonlocal;
   use Apache::lonnet;
   use LONCAPA::lonauthcgi();
   use LONCAPA();
   
 #  #
 # Write lonnet::passwd to do the call below.  # Write lonnet::passwd to do the call below.
Line 61  use Apache::loncommon(); Line 55  use Apache::loncommon();
 ##################################################  ##################################################
 sub des_keys {  sub des_keys {
     # Make a new key for DES encryption.      # Make a new key for DES encryption.
     # Each key has two parts which are returned seperately.      # Each key has two parts which are returned separately.
     # Please note:  Each key must be passed through the &hex function      # Please note:  Each key must be passed through the &hex function
     # before it is output to the web browser.  The hex versions cannot      # before it is output to the web browser.  The hex versions cannot
     # be used to decrypt.      # be used to decrypt.
Line 98  sub des_decrypt { Line 92  sub des_decrypt {
 ################################################################  ################################################################
 #                       Handler subroutines                    #  #                       Handler subroutines                    #
 ################################################################  ################################################################
 sub screennamechanger {  
   ################################################################
   #         Language Change Subroutines                          #
   ################################################################
   
   sub wysiwygchanger {
     my $r = shift;      my $r = shift;
     my $errormessage = shift;      Apache::lonhtmlcommon::add_breadcrumb(
     $errormessage = ($errormessage || '');      { href => '/adm/preferences?action=changewysiwyg',
     my $user       = $ENV{'user.name'};                  text => 'Change WYSIWYG Preferences'});
     my $domain     = $ENV{'user.domain'};      $r->print(Apache::loncommon::start_page('Content Display Settings'));
     my $homeserver = $ENV{'user.home'};      $r->print(Apache::lonhtmlcommon::breadcrumbs('Change WYSIWYG Preferences'));
     my %userenv = &Apache::lonnet::get('environment',['screenname']);  
     my $screenname=$userenv{'screenname'};      my %userenv = &Apache::lonnet::get
     $r->print(<<ENDSCREEN);          ('environment',['wysiwygeditor']);
 <html>      my $onselect='checked="checked"';
 <body bgcolor="#FFFFFF">      my $offselect='';
 <h1>Preferences for $user</h1>      if ($userenv{'wysiwygeditor'} eq 'on') {
 <h3>$user is a member of domain $domain</h3>   $onselect='';
 $errormessage   $offselect='checked="checked"';
       }
       my $switchoff=&mt('Disable WYSIWYG editor');
       my $switchon=&mt('Enable WYSIWYG editor');
       my $warning='';
       if ($env{'user.adv'}) {
          $warning.="<p>".&mt("The WYSIWYG editor only supports simple HTML and is in many cases unsuited for advanced authoring. In a number of cases, it may destroy advanced authoring involving LaTeX and script function calls.")."</p>";
       }
       $r->print(<<ENDLSCREEN);
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="set_wysiwyg" />
   $warning
   <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('Save').'" />');
   }
   
   
   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});
       my $message=&Apache::lonhtmlcommon::confirm_success(&mt('Set [_1] to [_2]','<i>'.&mt('WYSIWYG Editor').'</i>','<tt>'.&mt($newsetting).'</tt>'));
       $message=&Apache::loncommon::confirmwrapper($message);
       &print_main_menu($r,$message);
   }
   
   ################################################################
   #         Language Change Subroutines                          #
   ################################################################
   sub languagechanger {
       my $r = shift;
       
       Apache::lonhtmlcommon::add_breadcrumb(
       { href => '/adm/preferences?action=changelanguages',
                   text => 'Change Language'});
       $r->print(Apache::loncommon::start_page('Content Display Settings'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Change Language')); 
       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);
       $r->print(<<ENDLSCREEN);
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="verify_and_change_languages" />
   <br />$pref: $selectionbox
   ENDLSCREEN
       $r->print('<br /><input type="submit" value="'.&mt('Save').'" />');
   }
   
   
   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});
           $message=&Apache::lonhtmlcommon::confirm_success(&mt('Set [_1] to [_2]','<i>'.&mt('Preferred language').'</i>','<tt>"'.$newlanguage.'"</tt>.'));
       } else {
           &Apache::lonnet::del('environment',['languages']);
           &Apache::lonnet::delenv('environment.languages');
           $message=&Apache::lonhtmlcommon::confirm_success(&mt('Reset [_1]','<i>'.&mt('Preferred language').'</i>'));
       }
       $message=&Apache::loncommon::confirmwrapper($message);
       &Apache::loncommon::flush_langs_cache($user,$domain);
       &print_main_menu($r, $message);
   }
   
   ################################################################
   #         Tex Engine Change Subroutines                        #
   ################################################################
   sub texenginechanger {
       my $r = shift;
       Apache::lonhtmlcommon::add_breadcrumb(
       { href => '/adm/preferences?action=changetexenginepref',
                   text => 'Change How Math Equations Are Displayed'});
       $r->print(Apache::loncommon::start_page('Content Display Settings'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Change How Math Equations Are Displayed'));
       my $user       = $env{'user.name'};
       my $domain     = $env{'user.domain'};
       my %userenv = &Apache::lonnet::get('environment',['texengine']);
       my $texengine=$userenv{'texengine'};
   
       my %mathchoices=('' => 'Default',
        'tth' => 'tth (TeX to HTML)',
        #'ttm' => 'TeX to MathML',
        'jsMath' => 'jsMath',
        'mimetex' => 'mimetex (Convert to Images)',
                        'raw' => 'Raw (Screen Reader)'
                        );
       my $selectionbox=&Apache::loncommon::select_form($texengine,'texengine',
        %mathchoices);
       my $jsMath_start=&Apache::lontexconvert::jsMath_header();
       my %lt=&Apache::lonlocal::texthash(
         'headline' => 'Change Math Preferences',
         'preftxt'  => 'Preferred method to display Math',
         'change'   => 'Save',
         'exmpl'    => 'Examples',
         'jsmath'   => 'jsMath:',
         'tth'      => 'tth (TeX to HTML):',
         'mimetex'  => 'mimetex (Convert to Images):',
       );
   
       my $jsMathWarning='<p>'
                        .'<div class="LC_warning">'
                        .&mt("It looks like you don't have the TeX math fonts installed.")
                        .'</div>'
                        .'<div>'
                        .&mt('The jsMath example on this page may not look right without them. '
                            .'The [_1]jsMath Home Page[_2] 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.'
                            ,'<a href="http://www.math.union.edu/locate/jsMath/" target="_blank">'
                            ,'</a>')
                        .'</div>'
                        .'</p>';
   
       $r->print(<<ENDLSCREEN);
   <h2>$lt{'headline'}</h2>
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="verify_and_change_texengine" />
 <p>  <p>
 Change anonymous discussion screen name for $user  $lt{'preftxt'}: $selectionbox 
   <br />
   <input type="submit" value="$lt{'change'}" />
 </p>  </p>
   
 <form name="server" action="/adm/preferences" method="post">  
 <input type="hidden" name="action" value="verify_and_change_screenname" />  
 New screenname:  
 <input type="text" size="20" value="$screenname" name="screenname" />  
 <input type="submit" value="Change" />  
 </form>  </form>
 </body>  <br />
 </html>  <hr />
 ENDSCREEN  $lt{'exmpl'}
   
   <h3>$lt{'jsmath'}</h3> 
   <p>
   $jsMath_start
   <script type="text/javascript" language="JavaScript">
   if (jsMath.nofonts == 1) {
       document.writeln($jsMathWarning);
   }
   </script>
   <iframe src="/res/adm/pages/math_example.tex?inhibitmenu=yes&texengine=jsMath" width="400" height="120"></iframe>
   </p>
   
   <h3>$lt{'mimetex'}</h3>
   <p>
   <iframe src="/res/adm/pages/math_example.tex?inhibitmenu=yes&texengine=mimetex" width="400" height="100"></iframe>
   </p>
   
   <h3>$lt{'tth'}</h3>
   <p>
   <iframe src="/res/adm/pages/math_example.tex?inhibitmenu=yes&texengine=tth" width="400" height="200"></iframe>
   </p>
   ENDLSCREEN
       if ($env{'environment.texengine'} ne 'jsMath') {
    $r->print('<script type="text/javascript" language="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});
           $message=&Apache::lonhtmlcommon::confirm_success(&mt('Set [_1] to [_2]','<i>'.&mt('Preferred method to display Math').'</i>','<tt>"'.$newtexengine.'"</tt>'));
       } else {
           &Apache::lonnet::del('environment',['texengine']);
           &Apache::lonnet::delenv('environment.texengine');
           $message=&Apache::lonhtmlcommon::confirm_success(&mt('Reset [_1]','<i>'.&mt('Preferred method to display Math').'</i>'));
       }
       $message=&Apache::loncommon::confirmwrapper($message);
       &print_main_menu($r, $message);
   }
   
   ################################################################
   #         Roles Page Preference Change Subroutines         #
   ################################################################
   sub rolesprefchanger {
       my $r = shift;
       my $role    = ($env{'user.adv'} ? 'Role' : 'Course');
       my $lc_role = ($env{'user.adv'} ? 'role' : 'course');
       my $user       = $env{'user.name'};
       my $domain     = $env{'user.domain'};
       my %userenv = &Apache::lonnet::get
           ('environment',['recentroles','recentrolesn']);
       Apache::lonhtmlcommon::add_breadcrumb(
       { href => '/adm/preferences?action=changerolespref',
                   text => 'Change '.$role.' Page Pref'});
       $r->print(Apache::loncommon::start_page('Content Display Settings'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Change '.$role.' Page Pref'));
       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";
       }
   
   # Get list of recent roles and display with checkbox in front
       my $roles_check_list = '';
       my $role_key='';
       if ($env{'environment.recentroles'}) {
           my %recent_roles =
                  &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
           my %frozen_roles =
                  &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'});
           
           my %role_text = &rolespref_get_role_text([keys(%recent_roles)]);
           my @sorted_roles = sort {$role_text{$a} cmp $role_text{$b}} keys(%role_text);
   
           $roles_check_list .=
       &Apache::loncommon::start_data_table().
       &Apache::loncommon::start_data_table_header_row().
       "<th>".&mt('Freeze '.$role)."</th>".
       "<th>".&mt($role)."</td>".
       &Apache::loncommon::end_data_table_header_row().
       "\n";
    my $count;
           foreach $role_key (@sorted_roles) {
               my $checked = "";
               my $value = $recent_roles{$role_key};
               if ($frozen_roles{$role_key}) {
                   $checked = ' checked="checked"';
               }
       $count++;
               $roles_check_list .=
    &Apache::loncommon::start_data_table_row().
    '<td class="LC_table_cell_checkbox">'.
    "<input type=\"checkbox\"$checked name=\"freezeroles\"".
    " id=\"freezeroles$count\" value=\"$role_key\" /></td>".
    "<td><label for=\"freezeroles$count\">".
    "$role_text{$role_key}</label></td>".
    &Apache::loncommon::end_data_table_row(). "\n";
           }
           $roles_check_list .= "</table>\n";
       }
   
       $r->print('
   <p>'.&mt('Some LON-CAPA users have a long list of '.$lc_role.'s. The Recent '.$role.'s Hotlist feature keeps track of the last N '.$lc_role.'s which have been visited and places a table of these at the top of the '.$lc_role.'s page. People with very few '.$lc_role.'s should leave this feature disabled.').'
   </p>
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="verify_and_change_rolespref" />
   <br /><label>'.&mt('Enable Recent '.$role.'s Hotlist:').'
   <input type="checkbox"'.$checked.' name="recentroles" value="true" /></label>
   <br />'.&mt('Number of '.$role.'s in Hotlist:').'
   <select name="recentrolesn" size="1">
   '.$options.'
   </select>
   <p>'.&mt('This list below can be used to <q>freeze</q> '.$lc_role.'s on your screen. Those marked as frozen will not be removed from the list, even if they have not been used recently.').'
   </p>
   '.$roles_check_list.'
   <br />
   <input type="submit" value="'.&mt('Save').'" />
   </form>');
   }
   
   sub rolespref_get_role_text {
   # Get a line of text for each role
       my ($roles) = @_;
       my %roletext = ();
   
       foreach my $item (@$roles) {
   # get course information
           my ($role,$rest) = split(/\./, $item);
           my $trole = "";
           $trole = &Apache::lonnet::plaintext($role);
           my ($tdomain,$other,$tsection)= split(/\//,Apache::lonnet::declutter($rest));
           my $tother = '-';
           if ($role =~ /^(cc|st|in|ta|ep|cr)/ ) {
               my %newhash=&Apache::lonnet::coursedescription($tdomain."_".$other);
               $tother = " - ".$newhash{'description'};
           } elsif ($role =~ /dc/) {
               $tother = "";
           } else {
               $tother = " - $other";
           }
    
           my $section="";
           if ($tsection) {
               $section = " - Section/Group: $tsection";
           }
           $roletext{$item} = $tdomain." - ".$trole.$tother.$section;
       }
       return %roletext;
   }
   
   sub verify_and_change_rolespref {
       my $r = shift;
       my $role = ($env{'user.adv'} ? 'Role' : 'Course');
       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 $message='<hr />';
       if ($hotlist_flag) {
           &Apache::lonnet::put('environment',{'recentroles' => $hotlist_flag});
           &Apache::lonnet::appenv({'environment.recentroles' => $hotlist_flag});
           $message=&mt('Recent '.$role.'s Hotlist is Enabled');
       } else {
           &Apache::lonnet::del('environment',['recentroles']);
           &Apache::lonnet::delenv('environment.recentroles');
           $message=&mt('Recent '.$role.'s Hotlist is Disabled');
       }
       if ($hotlist_n) {
           &Apache::lonnet::put('environment',{'recentrolesn' => $hotlist_n});
           &Apache::lonnet::appenv({'environment.recentrolesn' => $hotlist_n});
           if ($hotlist_flag) {
               $message.="<br />".
    &mt('Display [_1] Most Recent '.$role.'s',$hotlist_n)."\n";
           }
       }
   
   # Get list of froze roles and list of recent roles
       my @freeze_list = &Apache::loncommon::get_env_multiple('form.freezeroles');
       my %freeze = ();
       my %roletext = ();
   
       foreach my $key (@freeze_list) {
           $freeze{$key}='1';
       }
   
       my %recent_roles =
           &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
       my %frozen_roles =
           &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'});
       my %role_text = &rolespref_get_role_text([keys(%recent_roles)]);
   
   # Unset any roles that were previously frozen but aren't in list
       foreach my $role_key (sort(keys(%recent_roles))) {
           if (($frozen_roles{$role_key}) && (!exists($freeze{$role_key}))) {
       $message .= "<br />".&Apache::lonhtmlcommon::confirm_success(&mt('Unfreezing '.$role.': [_1]','<i>'.$role_text{$role_key}.'</i>'));
       &Apache::lonhtmlcommon::store_recent('roles',$role_key,' ',0);
           }
       }
   
   # Freeze selected roles
       foreach my $role_key (@freeze_list) {
           if (!$frozen_roles{$role_key}) {
                $message .= "<br />".
                &Apache::lonhtmlcommon::confirm_success(&mt('Freezing '.$role.': [_1]','<i>'.$role_text{$role_key}.'</i>'));
                &Apache::lonhtmlcommon::store_recent('roles',
                                             $role_key,' ',1);
           }
       }
       $message=&Apache::loncommon::confirmwrapper($message);
       &print_main_menu($r, $message);
   }
   
   
   
   ################################################################
   #         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'};
       Apache::lonhtmlcommon::add_breadcrumb(
    { href => '/adm/preferences?action=changescreenname',
                     text => 'Change Screen Name'});
       $r->print(Apache::loncommon::start_page('Personal Data'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Change Screen Name'));
       $r->print('<p>'
                .&mt('Change the name that is displayed in your posts.')
                .'</p>'
       );
       $r->print('<form name="prefs" action="/adm/preferences" method="post">'
                .'<input type="hidden" name="action" value="verify_and_change_screenname" />'
                .&Apache::lonhtmlcommon::start_pick_box()
                .&Apache::lonhtmlcommon::row_title(&mt('Screenname').' '.&mt('(shown if you post anonymously)'))
                .'<input type="text" size="20" value="'.$screenname.'" name="screenname" />'
                .&Apache::lonhtmlcommon::row_closure()
                .&Apache::lonhtmlcommon::row_title(&mt('Nickname').' '.&mt('(shown if you post non-anonymously)'))
                .'<input type="text" size="20" value="'.$nickname.'" name="nickname" />'
                .&Apache::lonhtmlcommon::row_closure()
                .&Apache::lonhtmlcommon::row_title()
                .'<input type="submit" value="'.&mt('Save').'" />'
                .&Apache::lonhtmlcommon::row_closure(1)
                .&Apache::lonhtmlcommon::end_pick_box()
                .'</form>'
       );
 }  }
   
 sub verify_and_change_screenname {  sub verify_and_change_screenname {
     my $r = shift;      my $r = shift;
     my $user       = $ENV{'user.name'};      my $user       = $env{'user.name'};
     my $domain     = $ENV{'user.domain'};      my $domain     = $env{'user.domain'};
     my $homeserver = $ENV{'user.home'};  # Screenname
     my $newscreen  = $ENV{'form.screenname'};      my $newscreen  = $env{'form.screenname'};
     $newscreen=~s/\W//g;      $newscreen=~s/[^ \w]//g;
     my $message='';      my $message='';
     if ($newscreen) {      if ($newscreen) {
         &Apache::lonnet::put('environment',{'screenname' => $newscreen});          &Apache::lonnet::put('environment',{'screenname' => $newscreen});
         &Apache::lonnet::appenv('environment.screenname' => $newscreen);          &Apache::lonnet::appenv({'environment.screenname' => $newscreen});
         $message='Set new screenname to '.$newscreen;          $message=&Apache::lonhtmlcommon::confirm_success(&mt('Set [_1] to [_2]','<i>'.&mt('Screenname').'</i>','<tt>"'.$newscreen.'"</tt>'));
     } else {      } else {
         &Apache::lonnet::del('environment',['screenname']);          &Apache::lonnet::del('environment',['screenname']);
         &Apache::lonnet::delenv('environment\.screenname');          &Apache::lonnet::delenv('environment.screenname');
         $message='Reset screenname';          $message=&Apache::lonhtmlcommon::confirm_success(&mt('Reset [_1]','<i>'.&mt('Screenname').'</i>'));
       }
   # 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});
           $message.=&Apache::lonhtmlcommon::confirm_success(&mt('Set [_1] to [_2]','<i>'.&mt('Nickname').'</i>','<tt>"'.$newscreen.'"</tt>'));
       } else {
           &Apache::lonnet::del('environment',['nickname']);
           &Apache::lonnet::delenv('environment.nickname');
           $message.=&Apache::lonhtmlcommon::confirm_success(&mt('Reset [_1]','<i>'.&mt('Nickname').'</i>'));
       }
       &Apache::lonnet::devalidate_cache_new('namescache',$user.':'.$domain);
       $message=&Apache::loncommon::confirmwrapper($message);
       &print_main_menu($r, $message);
   }
   
   ################################################################
   #                     Icon Subroutines                         #
   ################################################################
   sub iconchanger {
       my $r = shift;
       &Apache::lonhtmlcommon::add_breadcrumb(
       { href => '/adm/preferences?action=changeicons',
                   text => 'Change Main Menu'});
       $r->print(Apache::loncommon::start_page('Page Display Settings'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Change Main Menu'));
   
       my $user       = $env{'user.name'};
       my $domain     = $env{'user.domain'};
       my %userenv = &Apache::lonnet::get
           ('environment',['icons']);
       my $iconic='checked="checked"';
       my $classic='';
       my $onlyicon='';
       if ($userenv{'icons'} eq 'classic') {
          $classic='checked="checked"';
          $iconic='';
       }
       if ($userenv{'icons'} eq 'iconsonly') {
          $onlyicon='checked="checked"';
          $iconic='';
       }
       my $useicons=&mt('Use icons and text');
       my $usebuttons=&mt('Use buttons and text');
       my $useicononly=&mt('Use icons only');
       my $change=&mt('Save');
       $r->print(<<ENDSCREEN);
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="verify_and_change_icons" />
   <label><input type="radio" name="menumode" value="iconic" $iconic /> $useicons</label><br />
   <label><input type="radio" name="menumode" value="classic" $classic /> $usebuttons</label><br />
   <label><input type="radio" name="menumode" value="iconsonly" $onlyicon /> $useicononly</label><br />
   <input type="submit" value="$change" />
   </form>
   ENDSCREEN
   }
   
   sub verify_and_change_icons {
       my $r = shift;
       my $user       = $env{'user.name'};
       my $domain     = $env{'user.domain'};
       my $newicons   = $env{'form.menumode'};
   
       &Apache::lonnet::put('environment',{'icons' => $newicons});
       &Apache::lonnet::appenv({'environment.icons' => $newicons});
       my $message=&Apache::lonhtmlcommon::confirm_success(&mt('Set [_1] to [_2]','<i>'.&mt('Menu Display').'</i>','<tt>'.$newicons.'</tt>'));
       $message=&Apache::loncommon::confirmwrapper($message);
       &print_main_menu($r, $message);
   }
   
   ################################################################
   #                     Clicker Subroutines                      #
   ################################################################
   
   sub clickerchanger {
       my $r = shift;
       &Apache::lonhtmlcommon::add_breadcrumb(
       { href => '/adm/preferences?action=changeclicker',
                   text => 'Register Clicker'});
       $r->print(Apache::loncommon::start_page('Other'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Register Clicker'));
       my $user       = $env{'user.name'};
       my $domain     = $env{'user.domain'};
       my %userenv = &Apache::lonnet::get
           ('environment',['clickers']);
       my $clickers=$userenv{'clickers'};
       $clickers=~s/\,/\n/gs;
       my $text=&mt('Enter response device ("clicker") numbers');
       my $change=&mt('Save');
       my $helplink=&Apache::loncommon::help_open_topic('Clicker_Registration',&mt('Locating your clicker ID'));
       $r->print(<<ENDSCREEN);
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="verify_and_change_clicker" />
   <label>$helplink<br /><br />$text<br />
   <textarea name="clickers" rows="5" cols="20">$clickers</textarea>
   </label>
   <br />
   <input type="submit" value="$change" />
   </form>
   ENDSCREEN
   }
   
   sub verify_and_change_clicker {
       my $r = shift;
       my $user       = $env{'user.name'};
       my $domain     = $env{'user.domain'};
       my $newclickers  = $env{'form.clickers'};
       $newclickers=~s/[^\w\:\-]+/\,/gs;
       $newclickers=~tr/a-z/A-Z/;
       $newclickers=~s/[\:\-]+/\-/g;
       $newclickers=~s/\,+/\,/g;
       $newclickers=~s/^\,//;
       $newclickers=~s/\,$//;
       &Apache::lonnet::put('environment',{'clickers' => $newclickers});
       &Apache::lonnet::appenv({'environment.clickers' => $newclickers});
       my $message=&Apache::lonhtmlcommon::confirm_success(&mt('Registering clickers: [_1]',$newclickers));
       $message=&Apache::loncommon::confirmwrapper($message);
       &print_main_menu($r, $message);
   }
   
   ################################################################
   #               Domcoord Access Subroutines                    #
   ################################################################
   
   sub domcoordchanger {
       my $r = shift;
       &Apache::lonhtmlcommon::add_breadcrumb(
       { href => '/adm/preferences?action=changedomcoord',
                   text => 'Restrict Domain Coordinator Access'});
       $r->print(Apache::loncommon::start_page('Restrict Domain Coordinator Access'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Restrict Domain Coordinator Access'));
       my $user       = $env{'user.name'};
       my $domain     = $env{'user.domain'};
       my %userenv = &Apache::lonnet::get
           ('environment',['domcoord.author']);
       my $constchecked='';
       if ($userenv{'domcoord.author'} eq 'blocked') {
          $constchecked=' checked="checked"';
       }
       my $text=&mt('By default, the Domain Coordinator can enter your construction space.');
       my $construction=&mt('Block access to construction space');
       my $change=&mt('Save');
       $r->print(<<ENDSCREEN);
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="verify_and_change_domcoord" />
   $text<br />
   <label><input type="checkbox" name="construction"$constchecked />$construction</label><br />
   <input type="submit" value="$change" />
   </form>
   ENDSCREEN
   }
   
   sub verify_and_change_domcoord {
       my $r = shift;
       my $user       = $env{'user.name'};
       my $domain     = $env{'user.domain'};
       my %domcoord=('domcoord.author' => '');
       if ($env{'form.construction'}) { $domcoord{'domcoord.author'}='blocked'; }
       &Apache::lonnet::put('environment',\%domcoord);
       &Apache::lonnet::appenv({'environment.domcoord.author' => $domcoord{'domcoord.author'}});
       my $status='';
       if ($domcoord{'domcoord.author'} eq 'blocked') {
           $status=&mt('on');
       } else {
           $status=&mt('off');
       }
       my $message=&Apache::lonhtmlcommon::confirm_success(&mt('Set [_1] to [_2]','<i>'.&mt('Block access to construction space').'</i>','<tt>'.$status.'</tt>'));
       $message=&Apache::loncommon::confirmwrapper($message);
       &print_main_menu($r,$message);
   }
   
   #################################################################
   ##                      Lock Subroutines                        #
   #################################################################
   
   sub lockwarning {
       my $r = shift;
       my $title=&mt('Action locked');
       my $texttop=&mt('LON-CAPA is currently performing the following actions:');
       my $textbottom=&mt('Changing roles or logging out may result in data corruption.');
       my ($num,%which)=&Apache::lonnet::get_locks();
       my $which='';
       foreach my $id (keys %which) {
          $which.='<li>'.$which{$id}.'</li>';
       }
       my $change=&mt('Override');
       $r->print(<<ENDSCREEN);
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="verify_and_change_locks" />
   <h1>$title</h1>
   $texttop
   <ul>
   $which
   </ul>
   $textbottom
   <input type="submit" value="$change" />
   </form>
   ENDSCREEN
   }
   
   sub verify_and_change_lockwarning {
       my $r = shift;
       &Apache::lonnet::remove_all_locks();
       $r->print(&mt('Cleared locks.'));
   }
   
   
   ################################################################
   #         Message Forward                                      #
   ################################################################
   
   sub msgforwardchanger {
       my ($r,$message) = @_;
       my $user       = $env{'user.name'};
       my $domain     = $env{'user.domain'};
       my %userenv = &Apache::lonnet::get('environment',['msgforward','notification','critnotification','notifywithhtml']);
       my $msgforward=$userenv{'msgforward'};
       my %lt = &Apache::lonlocal::texthash(
                                             all   => 'All',
                                             crit  => 'Critical only',
                                             reg   => 'Non-critical only',
                                             foad  => 'Forwarding Address(es)',
                                             noti  => 'Notification E-mail Address(es)', 
                                             foad_exmpl => 'e.g. <tt>userA:domain1,userB:domain2,...</tt>',
                                             mnot  => 'E-mail Address(es) which should be notified about new LON-CAPA messages',
    # old: 'Message Notification Email Address(es)',
                                             mnot_exmpl => 'e.g. <tt>joe@doe.com</tt>',
                                             chg   => 'Save',
                                             email => 'The e-mail address entered in row ',
                                             notv => 'is not a valid e-mail address',
                                             toen => "To enter multiple addresses, enter one address at a time, click 'Change' and then add the next one", 
                                             prme => 'Back',
                                           );
       Apache::lonhtmlcommon::add_breadcrumb(
       { href => '/adm/preferences?action=changemsgforward',
    text => 'Change Message Forwarding/Notification'});
       $r->print(Apache::loncommon::start_page('Message Management'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Change Message Forwarding/Notification'));
       my $forwardingHelp = &Apache::loncommon::help_open_topic("Prefs_Forwarding");
       my $notificationHelp = &Apache::loncommon::help_open_topic("Prefs_Notification");
       my $criticalMessageHelp = &Apache::loncommon::help_open_topic("Course_Critical_Message");
       my @allow_html = split(/,/,$userenv{'notifywithhtml'});
       my %allnot = &get_notifications(\%userenv);
       my $validatescript = &Apache::lonhtmlcommon::javascript_valid_email();
       my $jscript = qq|
   <script type="text/javascript" language="JavaScript">
   function validate() {
       for (var i=0; i<document.prefs.numnotify.value; i++) {
           var checkaddress = 0;
           var addr = document.prefs.elements['address_'+i].value;
           var rownum = i+1;
           if (i < document.prefs.numnotify.value-1) {
               if (document.prefs.elements['modify_notify_'+i].checked) {
                   checkaddress = 1;
               }
           } else {
               if (document.prefs.elements['add_notify_'+i].checked == true) { 
                   checkaddress = 1;
               }
           }
           if (checkaddress == 1)  {
               var addr = document.prefs.elements['address_'+i].value;
               if (validmail(document.prefs.elements['address_'+i]) == false) {
                   var multimsg = '';
                   if (addr.indexOf(",") >= 0) {
                       multimsg = "\\n($lt{'toen'}).";
                   }
                   alert("$lt{'email'} "+rownum+" ('"+addr+"') $lt{'notv'}."+multimsg);
                   return;
               }
           }
       }
       document.prefs.submit();
   }
   
   function address_changes (adnum) {
        if (!document.prefs.elements['del_notify_'+adnum].checked) { 
            document.prefs.elements['modify_notify_'+adnum].checked = true;
        }   
   }
   
   function new_address(adnum) {
        document.prefs.elements['add_notify_'+adnum].checked = true;
   }
   
   function delete_address(adnum) {
        if (document.prefs.elements['del_notify_'+adnum].checked) {
             document.prefs.elements['modify_notify_'+adnum].checked = false;
        }
   }
   
   function modify_address(adnum) {
       if (document.prefs.elements['modify_notify_'+adnum].checked) {
           document.prefs.elements['del_notify_'+adnum].checked = false;
       }
   } 
   
   $validatescript
   </script>
   |;
       $r->print(<<ENDMSG);
   $jscript
   $message
   <h3>$lt{'foad'} $forwardingHelp</h3>
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="verify_and_change_msgforward" />
   $lt{'foad'} ($lt{'foad_exmpl'}):
   <input type="text" size="40" value="$msgforward" name="msgforward" /><br />
   <h3>$lt{'noti'} $notificationHelp</h3>
   $lt{'mnot'} ($lt{'mnot_exmpl'}):<br />
   ENDMSG
       my @sortforwards = sort (keys(%allnot));
       my $output = &Apache::loncommon::start_data_table().
                    &Apache::loncommon::start_data_table_header_row().
                    '<th>&nbsp;</th>'.
                    '<th>'.&mt('Action').'</th>'.
                    '<th>'.&mt('Notification address').'</th><th>'.
                    &mt('Types of message for which notification is sent').
                    $criticalMessageHelp.'</th><th>'.
                    &mt('Excerpt retains HTML tags in message').'</th>'.
                    &Apache::loncommon::end_data_table_header_row();
       my $num = 0;
       my $counter = 1;
       foreach my $item (@sortforwards) {
           $output .= &Apache::loncommon::start_data_table_row().
                      '<td><b>'.$counter.'</b></td>'.
                      '<td><span class="LC_nobreak"><label>'.
                      '<input type="checkbox" name="modify_notify_'.
                      $num.'" onclick="javscript:modify_address('."'$num'".')" />'.
                      &mt('Modify').'</label></span>&nbsp;&nbsp; '.
                      '<span class="LC_nobreak"><label>'.
                      '<input type="checkbox" name="del_notify_'.$num.
                      '" onclick="javscript:delete_address('."'$num'".')" />'.
                      &mt('Delete').'</label></span></td>'.
                      '<td><input type="text" value="'.$item.'" name="address_'.
                      $num.'" onFocus="javascript:address_changes('."'$num'".
                      ')" /></td><td>';
           my %chk;
           if (defined($allnot{$item}{'crit'})) {
               if (defined($allnot{$item}{'reg'})) {
                   $chk{'all'} = 'checked="checked" ';
               } else {
                   $chk{'crit'} = 'checked="checked" ';
               }
           } else {
               $chk{'reg'} = 'checked="checked" ';
           }
           foreach my $type ('all','crit','reg') {
               $output .= '<span class="LC_nobreak"><label>'.
                          '<input type="radio" name="notify_type_'.$num. 
                          '" value="'.$type.'" '.$chk{$type}.
                          ' onchange="javascript:address_changes('."'$num'".')" />'.
                          $lt{$type}.'</label></span>&nbsp;';
           }
           my $htmlon = '';
           my $htmloff = '';
           if (grep/^\Q$item\E/,@allow_html) {
               $htmlon = 'checked="checked" '; 
           } else {
               $htmloff = 'checked="checked" ';
           }
           $output .= '</td><td><label><input type="radio" name="html_'.$num.
                      '" value="1" '.$htmlon.
                      ' onchange="javascript:address_changes('."'$num'".')" />'.
                      &mt('Yes').'</label>&nbsp;'.
                      '<label><input type="radio" name="html_'.$num.'" value="0" '.
                      $htmloff. ' onchange="javascript:address_changes('."'$num'".
   ')" />'.
                      &mt('No').'</label></td>'.
                      &Apache::loncommon::end_data_table_row();
           $num ++;
           $counter ++;
       }
       my %defchk = (
                      all => 'checked="checked" ',
                      crit => '',
                      reg => '',
                    );
       $output .= &Apache::loncommon::start_data_table_row().
                  '<td><b>'.$counter.'</b></td>'.
                  '<td><span class="LC_nobreak"><label>'.
                  '<input type="checkbox" name="add_notify_'.$num.
                  '" value="1" />'.&mt('Add new address').'</label></span></td>'.
                  '<td><input type="text" value="" name="address_'.$num.
                  '" onFocus="javascript:new_address('."'$num'".')" /></td><td>';
       foreach my $type ('all','crit','reg') {
           $output .= '<span class="LC_nobreak"><label>'.
                      '<input type="radio" name="notify_type_'.$num.
                      '" value="'.$type.'" '.$defchk{$type}.'/>'.
                      $lt{$type}.'</label></span>&nbsp;';
       }
       $output .= '</td><td><label><input type="radio" name="html_'.$num.
                  '" value="1" />'.&mt('Yes').'</label>&nbsp;'.
                  '<label><input type="radio" name="html_'.$num.'" value="0" '.
                  ' checked="checked" />'.
                  &mt('No').'</label></td>'.
                  &Apache::loncommon::end_data_table_row().
                  &Apache::loncommon::end_data_table();
       $num ++;
       $r->print($output);
       $r->print(qq|
   <br /><hr />
   <input type="hidden" name="numnotify" value="$num" />
   <input type="button" value="$lt{'prme'}" onclick="location.href='/adm/preferences'" />
   <input type="button" value="$lt{'chg'}" onclick="javascript:validate()" />
   </form>
   |);
   
   }
   
   sub get_notifications {
       my ($userenv) = @_;
       my %allnot;
       my @critnot = split(/,/,$userenv->{'critnotification'});
       my @regnot = split(/,/,$userenv->{'notification'});
       foreach my $item (@critnot) {
           $allnot{$item}{crit} = 1;
       }
       foreach my $item (@regnot) {
           $allnot{$item}{reg} = 1;
       }
       return %allnot;
   }
   
   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(/[\@\:]/,$_);
           $msuser = &LONCAPA::clean_username($msuser);
           $msdomain = &LONCAPA::clean_domain($msdomain);
           if (($msuser) && ($msdomain)) {
       if (&Apache::lonnet::homeserver($msuser,$msdomain) ne 'no_host') {
                  $newscreen.=$msuser.':'.$msdomain.',';
      } else {
                  $message.= &mt('No such user: ').'<tt>'.$msuser.':'.$msdomain.'</tt><br />';
              }
           }
       }
       $newscreen=~s/\,$//;
       if ($newscreen) {
           &Apache::lonnet::put('environment',{'msgforward' => $newscreen});
           &Apache::lonnet::appenv({'environment.msgforward' => $newscreen});
           $message .= &mt('Set message forwarding to ').'<tt>"'.$newscreen.'"</tt>.'
                       .'<br />';
       } else {
           &Apache::lonnet::del('environment',['msgforward']);
           &Apache::lonnet::delenv('environment.msgforward');
           $message.= &mt("Set message forwarding to 'off'.").'<br />';
       }
       my $critnotification;
       my $notification;
       my $notify_with_html;
       my $lastnotify = $env{'form.numnotify'}-1;
       my $totaladdresses = 0;
       for (my $i=0; $i<$env{'form.numnotify'}; $i++) {
           if ((!defined($env{'form.del_notify_'.$i})) &&  
              ((($i==$lastnotify) && ($env{'form.add_notify_'.$lastnotify} == 1)) ||
               ($i<$lastnotify))) {
               if (defined($env{'form.address_'.$i})) {
                   if ($env{'form.notify_type_'.$i} eq 'all') {
                       $critnotification .= $env{'form.address_'.$i}.',';
                       $notification .= $env{'form.address_'.$i}.',';
                   } elsif ($env{'form.notify_type_'.$i} eq 'crit') {
                       $critnotification .= $env{'form.address_'.$i}.',';
                   } elsif ($env{'form.notify_type_'.$i} eq 'reg') {
                       $notification .= $env{'form.address_'.$i}.','; 
                   }
                   if ($env{'form.html_'.$i} eq '1') {
       $notify_with_html .= $env{'form.address_'.$i}.',';      
                   }
                   $totaladdresses ++;
               }
           }
       }
       $critnotification =~ s/,$//;
       $critnotification=~s/\s//gs;
       $notification =~ s/,$//;
       $notification=~s/\s//gs;
       $notify_with_html =~ s/,$//;
       $notify_with_html =~ s/\s//gs;
       if ($notification) {
           &Apache::lonnet::put('environment',{'notification' => $notification});
           &Apache::lonnet::appenv({'environment.notification' => $notification});
           $message.=&mt('Set non-critical message notification address(es) to ').'<tt>"'.$notification.'"</tt>.<br />';
       } else {
           &Apache::lonnet::del('environment',['notification']);
           &Apache::lonnet::delenv('environment.notification');
           $message.=&mt("Set non-critical message notification to 'off'.").'<br />';
       }
       if ($critnotification) {
           &Apache::lonnet::put('environment',{'critnotification' => $critnotification});
           &Apache::lonnet::appenv({'environment.critnotification' => $critnotification});
           $message.=&mt('Set critical message notification address(es) to ').'<tt>"'.$critnotification.'"</tt>.<br />';
       } else {
           &Apache::lonnet::del('environment',['critnotification']);
           &Apache::lonnet::delenv('environment.critnotification');
           $message.=&mt("Set critical message notification to 'off'.").'<br />';
       }
       if ($critnotification || $notification) {
           if ($notify_with_html) {
               &Apache::lonnet::put('environment',{'notifywithhtml' => $notify_with_html});
               &Apache::lonnet::appenv({'environment.notifywithhtml' => $notify_with_html});
               $message.=&mt('Set address(es) to receive excerpts with html retained ').'<tt>"'.$notify_with_html.'"</tt>.';
           } else {
               &Apache::lonnet::del('environment',['notifywithhtml']);
               &Apache::lonnet::delenv('environment.notifywithhtml');
               if ($totaladdresses == 1) {
                   $message.=&mt("Set notification address to receive excerpts with html stripped.");
               } else {
                   $message.=&mt("Set all notification addresses to receive excerpts with html stripped.");
               }
           }
       } else {
           &Apache::lonnet::del('environment',['notifywithhtml']);
           &Apache::lonnet::delenv('environment.notifywithhtml');
       }
       if ($message) {
           $message .= '<br /><hr />';
       }
       &Apache::loncommon::flush_email_cache($user,$domain);
       &msgforwardchanger($r,$message);
   }
   
   ################################################################
   #         Colors                                               #
   ################################################################
   
   sub colorschanger {
       my $r = shift;
       Apache::lonhtmlcommon::add_breadcrumb(
       { href => '/adm/preferences?action=changecolors',
                   text => 'Change Colors'});
       $r->print(Apache::loncommon::start_page('Page Display Settings'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Change Colors'));
   # figure out colors
       my $function=&Apache::loncommon::get_users_function();
       my $domain=&Apache::loncommon::determinedomain();
       my %colortypes=&Apache::lonlocal::texthash(
           'pgbg'     => 'Page Background Color',
           'tabbg'    => 'Header Background Color',
           'sidebg'   => 'Header Border Color',
           'font'     => 'Font Color',
           'fontmenu' => 'Font Menu Color',
           'link'     => 'Un-Visited Link Color',
           'vlink'    => 'Visited Link Color',
           'alink'    => 'Active Link Color',
       );
       my $start_data_table = &Apache::loncommon::start_data_table();
       my $chtable='';
       foreach my $item (sort(keys(%colortypes))) {
          my $curcol=&Apache::loncommon::designparm($function.'.'.$item,$domain);
          $chtable.=&Apache::loncommon::start_data_table_row().
      '<td>'.$colortypes{$item}.'</td><td style="background: '.$curcol.
           '">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td><td><input name="'.$item.
           '" size="10" value="'.$curcol.
   '" /></td><td><a href="javascript:pjump('."'color_custom','".$colortypes{$item}.
   "','".$curcol."','"
       .$item."','parmform.pres','psub'".');">'.&mt('Select').'</a></td>'.
       &Apache::loncommon::end_data_table_row()."\n";
       }
       my $end_data_table = &Apache::loncommon::end_data_table();
       my $pjump_def = &Apache::lonhtmlcommon::pjump_javascript_definition();
       my $savebutton = &mt('Save');
       my $resetbutton = &mt('Reset All');
       my $resetbuttondesc = &mt('Reset All Colors to Default');
       $r->print(<<ENDCOL);
   <script type="text/javascript" language="JavaScript">
   
       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.prefs.'+
                        document.parmform.pres_marker.value+
        '.value=document.parmform.pres_value.value;');
       }
           } else {
               document.parmform.pres_value.value='';
               document.parmform.pres_marker.value='';
           }
     }      }
     $r->print(<<ENDVCSCREEN);  
 <html>  
 <body bgcolor="#FFFFFF">  </script>
 <h1>Preferences for $user</h1>  <form name="parmform">
 <h3>$user is a member of domain $domain</h3>  <input type="hidden" name="pres_marker" />
   <input type="hidden" name="pres_type" />
   <input type="hidden" name="pres_value" />
   </form>
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="verify_and_change_colors" />
   $start_data_table
   $chtable
   $end_data_table
   </table>
 <p>  <p>
 Change anonymous discussion screen name for $user  <input type="submit" value="$savebutton" />
   <input type="submit" name="resetall" value="$resetbutton" title="$resetbuttondesc" />
 </p>  </p>
 $message  </form>
 </body></html>  ENDCOL
 ENDVCSCREEN  }
   
   sub verify_and_change_colors {
       my $r = shift;
   # figure out colors
       my $function=&Apache::loncommon::get_users_function();
       my $domain=&Apache::loncommon::determinedomain();
       my %colortypes=&Apache::lonlocal::texthash(
           'pgbg'     => 'Page Background Color',
           'tabbg'    => 'Header Background Color',
           'sidebg'   => 'Header Border Color',
           'font'     => 'Font Color',
    'fontmenu' => 'Font Menu Color',
           'link'     => 'Un-Visited Link Color',
           'vlink'    => 'Visited Link Color',
           'alink'    => 'Active Link Color',
       );
   
       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});
               $message.=&Apache::lonhtmlcommon::confirm_success(&mt('Set [_1] to [_2]','<i>'.$colortypes{$item}.'</i>','<tt>"'.$color.'"</tt>'))
                       .'<br />';
    } else {
       &Apache::lonnet::del('environment',[$entry]);
       &Apache::lonnet::delenv('environment.'.$entry);
               $message.=&Apache::lonhtmlcommon::confirm_success(&mt('Reset [_1]','<i>'.$colortypes{$item}.'</i>'))
                        .'<br />';
    }
       }
       $message=&Apache::loncommon::confirmwrapper($message);
   
       my $now = time;
       &Apache::lonnet::put('environment',{'color.timestamp' => $now});
       &Apache::lonnet::appenv({'environment.color.timestamp' => $now});
   
       &print_main_menu($r, $message);
 }  }
   
 ######################################################  ######################################################
 #            password handler subroutines            #  #            password handler subroutines            #
 ######################################################  ######################################################
 sub passwordchanger {  sub passwordchanger {
       my ($r,$errormessage,$caller,$mailtoken) = @_;
     # This function is a bit of a mess....      # This function is a bit of a mess....
     # Passwords are encrypted using londes.js (DES encryption)      # Passwords are encrypted using londes.js (DES encryption)
     my $r = shift;  
     my $errormessage = shift;  
     $errormessage = ($errormessage || '');      $errormessage = ($errormessage || '');
     my $user       = $ENV{'user.name'};      my ($user,$domain,$currentpass,$defdom);
     my $domain     = $ENV{'user.domain'};      &Apache::lonhtmlcommon::add_breadcrumb(
     my $homeserver = $ENV{'user.home'};   { href => '/adm/preferences?action=changepass',
                     text => 'Change Password'});
       unless ($caller eq 'reset_by_email') {
           $r->print(Apache::loncommon::start_page('Personal Data'));
           $r->print(Apache::lonhtmlcommon::breadcrumbs('Change Password'));
       }
       if ((!defined($caller)) || ($caller eq 'preferences')) {
           $user = $env{'user.name'};
           $domain = $env{'user.domain'};
           if (!defined($caller)) {
               $caller = 'preferences';
           }
       } elsif ($caller eq 'reset_by_email') {
               $defdom = $r->dir_config('lonDefDomain');
               my %data = &Apache::lonnet::tmpget($mailtoken);
               if (keys(%data) == 0) {
                   $r->print(&mt('Sorry, the URL you provided to complete the reset of your password was invalid. Either the token included in the URL has been deleted or the URL you provided was invalid. Please submit a [_1]new request[_2] for a password reset, and follow the link to the new URL included in the e-mail that will be sent to you, to allow you to enter a new password.'
                                ,'<a href="/adm/resetpw">','</a>')
                   );
                   return;
               }
               if (defined($data{time})) {
                   if (time - $data{'time'} < 7200) {
                       $user = $data{'username'};
                       $domain = $data{'domain'};
                       $currentpass = $data{'temppasswd'};
                   } else {
                       $r->print(&mt('Sorry, the token generated when you requested a password reset has expired.').'<br />');
                       return;
                   }
               } else {
                   $r->print(&mt('Sorry, the URL generated when you requested reset of your password contained incomplete information.').'<br />');
                   return;
               }
      } else {
           $r->print(&mt('Page requested in unexpected context').'<br />');
           return;
       }
     my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);      my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
     # Check for authentication types that allow changing of the password.      # Check for authentication types that allow changing of the password.
     return if ($currentauth !~ /^(unix|internal):/);      return if ($currentauth !~ /^(unix|internal):/);
Line 186  sub passwordchanger { Line 1278  sub passwordchanger {
        .$ukey_npass2 . $lkey_npass2,         .$ukey_npass2 . $lkey_npass2,
        $lonhost);         $lonhost);
     # Hexify the keys for output as javascript variables      # Hexify the keys for output as javascript variables
     $ukey_cpass = hex($ukey_cpass);      my %hexkey;
     $lkey_cpass = hex($lkey_cpass);      $hexkey{'ukey_cpass'}  = hex($ukey_cpass);
     $ukey_npass1= hex($ukey_npass1);      $hexkey{'lkey_cpass'}  = hex($lkey_cpass);
     $lkey_npass1= hex($lkey_npass1);      $hexkey{'ukey_npass1'} = hex($ukey_npass1);
     $ukey_npass2= hex($ukey_npass2);      $hexkey{'lkey_npass1'} = hex($lkey_npass1);
     $lkey_npass2= hex($lkey_npass2);      $hexkey{'ukey_npass2'} = hex($ukey_npass2);
       $hexkey{'lkey_npass2'} = hex($lkey_npass2);
     # Output javascript to deal with passwords      # Output javascript to deal with passwords
     # Output DES javascript      # Output DES javascript
     {      {
Line 199  sub passwordchanger { Line 1292  sub passwordchanger {
  my $jsh=Apache::File->new($include."/londes.js");   my $jsh=Apache::File->new($include."/londes.js");
  $r->print(<$jsh>);   $r->print(<$jsh>);
     }      }
       $r->print(&jscript_send($caller));
     $r->print(<<ENDFORM);      $r->print(<<ENDFORM);
   $errormessage
   
 <body bgcolor="#FFFFFF" onLoad="init();">  <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 -->
   ENDFORM
       $r->print(&server_form($logtoken,$caller,$mailtoken));
       $r->print(&client_form($caller,\%hexkey,$currentpass,$defdom));
   
 <script language="JavaScript">      #
       return;
   }
   
   sub jscript_send {
       my ($caller) = @_;
       my $output = qq|
   <script type="text/javascript" language="JavaScript">
   
     function send() {      function send() {
         uextkey=this.document.client.elements.ukey_cpass.value;          uextkey=this.document.client.elements.ukey_cpass.value;
         lextkey=this.document.client.elements.lkey_cpass.value;          lextkey=this.document.client.elements.lkey_cpass.value;
         initkeys();          initkeys();
   
         this.document.server.elements.currentpass.value          this.document.pserver.elements.currentpass.value
             =crypted(this.document.client.elements.currentpass.value);              =crypted(this.document.client.elements.currentpass.value);
   
         uextkey=this.document.client.elements.ukey_npass1.value;          uextkey=this.document.client.elements.ukey_npass1.value;
         lextkey=this.document.client.elements.lkey_npass1.value;          lextkey=this.document.client.elements.lkey_npass1.value;
         initkeys();          initkeys();
         this.document.server.elements.newpass_1.value          this.document.pserver.elements.newpass_1.value
             =crypted(this.document.client.elements.newpass_1.value);              =crypted(this.document.client.elements.newpass_1.value);
   
         uextkey=this.document.client.elements.ukey_npass2.value;          uextkey=this.document.client.elements.ukey_npass2.value;
         lextkey=this.document.client.elements.lkey_npass2.value;          lextkey=this.document.client.elements.lkey_npass2.value;
         initkeys();          initkeys();
         this.document.server.elements.newpass_2.value          this.document.pserver.elements.newpass_2.value
             =crypted(this.document.client.elements.newpass_2.value);              =crypted(this.document.client.elements.newpass_2.value);
   |;
         this.document.server.submit();      if ($caller eq 'reset_by_email') {
           $output .= qq|
           this.document.pserver.elements.uname.value =
                      this.document.client.elements.uname.value;
           this.document.pserver.elements.udom.value =
                      this.document.client.elements.udom.options[this.document.client.elements.udom.selectedIndex].value;
           this.document.pserver.elements.email.value =
                      this.document.client.elements.email.value;
   |;
       }
       $ output .= qq|
           this.document.pserver.submit();
     }      }
   
 </script>  </script>
 <h1>Preferences for $user</h1>  |;
 <h3>$user is a member of domain $domain</h3>  }
 $errormessage  
 <p>  sub client_form {
 Change password for $user      my ($caller,$hexkey,$currentpass,$defdom) = @_;
       my %lt=&Apache::lonlocal::texthash(
                   'email' => 'E-mail Address',
                   'username' => 'Username',
                   'domain' => 'Domain',
                   'currentpass' => 'Current Password',
                   'newpass' => 'New Password',
                   'confirmpass' => 'Confirm Password',
                   'changepass' => 'Save',
       );
   
       my $output = '<form name="client">'
                   .&Apache::lonhtmlcommon::start_pick_box();
       if ($caller eq 'reset_by_email') {
           $output .= &Apache::lonhtmlcommon::row_title(
                          '<label for="email">'.$lt{'email'}.'</label>')
                     .'<input type="text" name="email" size="30" />'
                     .&Apache::lonhtmlcommon::row_closure()
                     .&Apache::lonhtmlcommon::row_title(
                          '<label for="uname">'.$lt{'username'}.'</label>')
                     .'<input type="text" name="uname" size="15" />'
                     .'<input type="hidden" name="currentpass" value="'.$currentpass.'" />'
                     .&Apache::lonhtmlcommon::row_closure()
                     .&Apache::lonhtmlcommon::row_title(
                          '<label for="udom">'.$lt{'domain'}.'</label>')
                     .&Apache::loncommon::select_dom_form($defdom,'udom')
                     .&Apache::lonhtmlcommon::row_closure();
       } else {
           $output .= &Apache::lonhtmlcommon::row_title(
                          '<label for="currentpass">'.$lt{'currentpass'}.'</label>')
                     .'<input type="password" name="currentpass" size="10"/>'
                     .&Apache::lonhtmlcommon::row_closure();
       }
       $output .= &Apache::lonhtmlcommon::row_title(
                      '<label for="newpass_1">'.$lt{'newpass'}.'</label>')
                 .'<input type="password" name="newpass_1" size="10" />'
                 .&Apache::lonhtmlcommon::row_closure()
                 .&Apache::lonhtmlcommon::row_title(
                      '<label for="newpass_2">'.$lt{'confirmpass'}.'</label>')
                 .'<input type="password" name="newpass_2" size="10" />'
                 .&Apache::lonhtmlcommon::row_closure(1)
                 .&Apache::lonhtmlcommon::end_pick_box();
       $output .= '<p><input type="button" value="'.$lt{'changepass'}.'" onClick="send();" /></p>'
                 .qq|
   <input type="hidden" name="ukey_cpass"  value="$hexkey->{'ukey_cpass'}" />
   <input type="hidden" name="lkey_cpass"  value="$hexkey->{'lkey_cpass'}" />
   <input type="hidden" name="ukey_npass1" value="$hexkey->{'ukey_npass1'}" />
   <input type="hidden" name="lkey_npass1" value="$hexkey->{'lkey_npass1'}" />
   <input type="hidden" name="ukey_npass2" value="$hexkey->{'ukey_npass2'}" />
   <input type="hidden" name="lkey_npass2" value="$hexkey->{'lkey_npass2'}" />
   </form>
 </p>  </p>
 <p>  |;
 <!-- We seperate the forms into 'server' and 'client' in order to      return $output;
      ensure that unencrypted passwords will not be sent out by a  }
      crappy browser -->  
   
 <form name="server" action="/adm/preferences" method="post">  sub server_form {
       my ($logtoken,$caller,$mailtoken) = @_;
       my $action = '/adm/preferences';
       if ($caller eq 'reset_by_email') {
           $action = '/adm/resetpw';
       }
       my $output = qq|
   <form name="pserver" action="$action" method="post">
 <input type="hidden" name="logtoken"    value="$logtoken" />  <input type="hidden" name="logtoken"    value="$logtoken" />
 <input type="hidden" name="action"      value="verify_and_change_pass" />  
 <input type="hidden" name="currentpass" value="" />  <input type="hidden" name="currentpass" value="" />
 <input type="hidden" name="newpass_1"   value="" />  <input type="hidden" name="newpass_1"   value="" />
 <input type="hidden" name="newpass_2"   value="" />  <input type="hidden" name="newpass_2"   value="" />
 </form>      |;
       if ($caller eq 'reset_by_email') {
           $output .=  qq|
   <input type="hidden" name="token"   value="$mailtoken" />
   <input type="hidden" name="uname"   value="" />
   <input type="hidden" name="udom"   value="" />
   <input type="hidden" name="email"   value="" />
   
 <form name="client" >  |;
 <table>      }
 <tr><td align="right"> Current password:                      </td>      $output .= qq|
     <td><input type="password" name="currentpass" size="10"/> </td></tr>  <input type="hidden" name="action" value="verify_and_change_pass" />
 <tr><td align="right"> New password:                          </td>  
     <td><input type="password" name="newpass_1" size="10"  /> </td></tr>  
 <tr><td align="right"> Confirm password:                      </td>  
     <td><input type="password" name="newpass_2" size="10"  /> </td></tr>  
 <tr><td colspan="2" align="center">  
     <input type="button" value="Change Password" onClick="send();">  
 </table>  
 <input type="hidden" name="ukey_cpass"  value="$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>  </form>
 </p>  |;
 ENDFORM      return $output;
     #  
     return;  
 }  }
   
 sub verify_and_change_password {  sub verify_and_change_password {
     my $r = shift;      my ($r,$caller,$mailtoken) = @_;
     my $user       = $ENV{'user.name'};      my ($user,$domain,$homeserver);
     my $domain     = $ENV{'user.domain'};      if ($caller eq 'reset_by_email') {
     my $homeserver = $ENV{'user.home'};          $user       = $env{'form.uname'};
           $domain     = $env{'form.udom'};
           if ($user ne '' && $domain ne '') {
               $homeserver = &Apache::lonnet::homeserver($user,$domain);
               if ($homeserver eq 'no_host') {
           &passwordchanger($r,"<p>\n<span class='LC_error'>".
                            &mt("Invalid username and/or domain")."</span>\n</p>",
                            $caller,$mailtoken);
                   return 1;
               }
           } else {
               &passwordchanger($r,"<p>\n<span class='LC_error'>".
                                &mt("Username and domain were blank")."</span>\n</p>",
                                $caller,$mailtoken);
               return 1;
           }
       } else {
           $user       = $env{'user.name'};
           $domain     = $env{'user.domain'};
           $homeserver = $env{'user.home'};
       }
     my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);      my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
     # Check for authentication types that allow changing of the password.      # Check for authentication types that allow changing of the password.
     return if ($currentauth !~ /^(unix|internal):/);      if ($currentauth !~ /^(unix|internal):/) {
     #          if ($caller eq 'reset_by_email') {
     $r->print(<<ENDHEADER);              &passwordchanger($r,"<p>\n<span class='LC_error'>".
 <html>                               &mt("Authentication type for this user can not be changed by this mechanism").
 <head>                               "</span>\n</p>",
 <title>LON-CAPA Preferences:  Change password for $user</title>                                $caller,$mailtoken);
 </head>              return 1;
 ENDHEADER          } else {
               return;
           }
       }
     #      #
     my $currentpass = $ENV{'form.currentpass'};       my $currentpass = $env{'form.currentpass'}; 
     my $newpass1    = $ENV{'form.newpass_1'};       my $newpass1    = $env{'form.newpass_1'}; 
     my $newpass2    = $ENV{'form.newpass_2'};      my $newpass2    = $env{'form.newpass_2'};
     my $logtoken    = $ENV{'form.logtoken'};      my $logtoken    = $env{'form.logtoken'};
     # Check for empty data       # Check for empty data 
     unless (defined($currentpass) &&       unless (defined($currentpass) && 
     defined($newpass1)    &&       defined($newpass1)    && 
     defined($newpass2)    ){      defined($newpass2)    ){
  &passwordchanger($r,"<p>\n<font color='#ff0000'>ERROR</font>".   &passwordchanger($r,"<p>\n<span class='LC_error'>".
  "Password data was blank.\n</p>");   &mt("One or more password fields were blank").
                            "</span>\n</p>",$caller,$mailtoken);
  return;   return;
     }      }
     # Get the keys      # Get the keys
Line 305  ENDHEADER Line 1493  ENDHEADER
     my $tmpinfo = Apache::lonnet::reply('tmpget:'.$logtoken,$lonhost);      my $tmpinfo = Apache::lonnet::reply('tmpget:'.$logtoken,$lonhost);
     if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {      if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
         # I do not a have a better idea about how to handle this          # I do not a have a better idea about how to handle this
           my $tryagain_text = &mt('Please log out and try again.');
           if ($caller eq 'reset_by_email') {
               $tryagain_text = &mt('Please try again later.');
           }
           my $unable=&mt("Unable to retrieve saved token for password decryption");
  $r->print(<<ENDERROR);   $r->print(<<ENDERROR);
 <p>  <p>
 <font color="#ff0000">ERROR:</font> Unable to retrieve stored token for  <span class="LC_error">$unable.  $tryagain_text</span>
 password decryption.  Please log out and try again.  
 </p>  </p>
 ENDERROR  ENDERROR
         # Probably should log an error here          # Probably should log an error here
         return;          return 1;
     }      }
     my ($ckey,$n1key,$n2key)=split(/&/,$tmpinfo);      my ($ckey,$n1key,$n2key)=split(/&/,$tmpinfo);
     #       # 
     my $currentpass = &des_decrypt($ckey ,$currentpass);      $currentpass = &des_decrypt($ckey ,$currentpass);
     my $newpass1    = &des_decrypt($n1key,$newpass1);      $newpass1    = &des_decrypt($n1key,$newpass1);
     my $newpass2    = &des_decrypt($n2key,$newpass2);      $newpass2    = &des_decrypt($n2key,$newpass2);
     #       #
       if ($caller eq 'reset_by_email') {
           my %data = &Apache::lonnet::tmpget($mailtoken);
           if (keys(%data) == 0) {
               &passwordchanger($r,
                            '<span class="LC_error">'.
                            &mt('Could not verify current authentication.').'  '.
                            &mt('Please try again.').'</span>',$caller,$mailtoken);
               return 1;
           }
           if ($currentpass ne $data{'temppasswd'}) {
               &passwordchanger($r,
                            '<span class="LC_error">'.
                            &mt('Could not verify current authentication.').'  '.
                            &mt('Please try again.').'</span>',$caller,$mailtoken);
               return 1;
           }
       } 
     if ($newpass1 ne $newpass2) {      if ($newpass1 ne $newpass2) {
  &passwordchanger($r,   &passwordchanger($r,
  '<font color="#ff0000">ERROR:</font>'.   '<span class="LC_error">'.
  'The new passwords you entered do not match.  '.   &mt('The new passwords you entered do not match.').'  '.
  'Please try again.');   &mt('Please try again.').'</span>',$caller,$mailtoken);
  return;   return 1;
     }      }
     if (length($newpass1) < 7) {      if (length($newpass1) < 7) {
  &passwordchanger($r,   &passwordchanger($r,
  '<font color="#ff0000">ERROR:</font>'.   '<span class="LC_error">'.
  'Passwords must be a minimum of 7 characters long.  '.   &mt('Passwords must be a minimum of 7 characters long.').'  '.
  'Please try again.');   &mt('Please try again.').'</span>',$caller,$mailtoken);
  return;   return 1;
     }      }
     #      #
     # Check for bad characters      # Check for bad characters
Line 342  ENDERROR Line 1551  ENDERROR
     }      }
     if ($badpassword) {      if ($badpassword) {
  # I can't figure out how to enter bad characters on my browser.   # I can't figure out how to enter bad characters on my browser.
  &passwordchanger($r,<<ENDERROR);   my $errormessage ='<span class="LC_error">'.
 <font color="#ff0000">ERROR:</font>             &mt('The password you entered contained illegal characters.').'<br />'.
 The password you entered contained illegal characters.<br />             &mt('Valid characters are').(<<"ENDERROR");
 Valid characters are: space and <br />  : space and <br />
 <pre>  <pre>
 !&quot;\#$%&amp;\'()*+,-./0123456789:;&lt;=&gt;?\@  !&quot;\#$%&amp;\'()*+,-./0123456789:;&lt;=&gt;?\@
 ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_\`abcdefghijklmnopqrstuvwxyz{|}~  ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_\`abcdefghijklmnopqrstuvwxyz{|}~
 </pre>  </pre></span>
 ENDERROR  ENDERROR
           &passwordchanger($r,$errormessage,$caller,$mailtoken);
           return 1;
     }      }
     #       # 
     # Change the password (finally)      # Change the password (finally)
     my $result = &Apache::lonnet::changepass      my $result = &Apache::lonnet::changepass
  ($user,$domain,$currentpass,$newpass1,$homeserver);   ($user,$domain,$currentpass,$newpass1,$homeserver,$caller);
     # Inform the user the password has (not?) been changed      # Inform the user the password has (not?) been changed
       my $message;
     if ($result =~ /^ok$/) {      if ($result =~ /^ok$/) {
  $r->print(<<"ENDTEXT");          $message = &Apache::lonhtmlcommon::confirm_success(&mt('The password for user [_1] was successfully changed.','<i>'.$user.'</i>'));
 <h2>Password for $user was successfully changed</h2>          if ($caller eq 'reset_by_email') {
 ENDTEXT              $r->print($message.'<br />');
           } else {
               &print_main_menu($r, $message);
           }
     } else {      } else {
  # error error: run in circles, scream and shout   # error error: run in circles, scream and shout
         $r->print(<<ENDERROR);          if ($caller eq 'reset_by_email') {
 <h2><font color="#ff0000">Password for $user was not changed</font></h2>              if (!$result) {
 Please make sure your old password was entered correctly.                  return 1;
 ENDERROR              } else {
                   return $result;
               }
           } else {
               $message = &Apache::lonhtmlcommon::confirm_success(
                   &mt("The password for user [_1] was not changed.",'<i>'.$user.'</i>').' '.&mt('Please make sure your old password was entered correctly.'),1);
               $message=&Apache::loncommon::confirmwrapper($message);
               &print_main_menu($r, $message);
           }
     }      }
     return;      return;
 }  }
   
   ################################################################
   #            discussion display subroutines 
   ################################################################
   sub discussionchanger {
       my $r = shift;
       Apache::lonhtmlcommon::add_breadcrumb(
       { href => '/adm/preferences?action=changediscussions',
                   text => 'Change Discussion Preferences'});
       $r->print(Apache::loncommon::start_page('Message Management'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Change Discussion Preferences'));
       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{'discmarkread'} 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 discussion boards and individual resources in all your courses.',
           'prca' => 'Preferences can be set that determine',
           'whpo' => 'Which posts are displayed when you display a discussion 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="prefs" 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> 
   END
   
       $r->print('<p class="LC_info">'.$lt{'thde'}.'</p>');
   
       $r->print(&Apache::loncommon::start_data_table());
       $r->print(<<"END");
          <tr>
           <th>$lt{'pref'}</th>
           <th>$lt{'curr'}</th>
           <th>$lt{'actn'}?</th>
          </tr>
   END
       $r->print(&Apache::loncommon::start_data_table_row());
       $r->print(<<"END");
          <td>$lt{'disa'}</td>
          <td>$lt{$discdisp}</td>
          <td><label><input type="checkbox" name="discdisp" /><input type="hidden" name="newdisp" value="$newdisp" />&nbsp;$lt{'chgt'} "$dispchange"</label></td>
   END
       $r->print(&Apache::loncommon::end_data_table_row().
         &Apache::loncommon::start_data_table_row());
       $r->print(<<"END");
          <td>$lt{'npmr'}</td>
          <td>$lt{$discmark}</td>
          <td><label><input type="checkbox" name="discmark" /><input type="hidden" name="newmark" value="$newmark" />&nbsp;$lt{'chgt'} "$markchange"</label></td>
         </tr>
   END
       $r->print(&Apache::loncommon::end_data_table_row().
         &Apache::loncommon::end_data_table());
   
       $r->print('<br />'
                .'<input type="submit" name="sub" value="'.&mt('Save').'" />'
                .'</form>'
       );
   }
                                                                                                                   
   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 .=&Apache::lonhtmlcommon::confirm_success(&mt('In discussions: only new posts will be displayed.')).'<br />';
               &Apache::lonnet::put('environment',{'discdisplay' => $newdisp});
               &Apache::lonnet::appenv({'environment.discdisplay' => $newdisp});
           } else {
               $message .= &Apache::lonhtmlcommon::confirm_success(&mt('In discussions: all posts will be displayed.')).'<br />';
               &Apache::lonnet::del('environment',['discdisplay']);
               &Apache::lonnet::delenv('environment.discdisplay');
           }
       }
       if (defined($env{'form.discmark'}) ) {
           my $newmark = $env{'form.newmark'};
           if ($newmark eq 'ondisp') {
               $message.=&Apache::lonhtmlcommon::confirm_success(&mt('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.=&Apache::lonhtmlcommon::confirm_success(&mt('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');
           }
       }
       $message=&Apache::loncommon::confirmwrapper($message);
       &print_main_menu($r, $message);
   }
   
   ################################################################
   # Subroutines for page display on course access (Course Coordinators)
   ################################################################
   sub coursedisplaychanger {
       my $r = shift;
       &Apache::lonhtmlcommon::add_breadcrumb(
       { href => '/adm/preferences?action=changecourseinit',
                   text => 'Change Course Init. Pref.'});
       $r->print(Apache::loncommon::start_page('Change Course Initialization Preference'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Change Course Init. Pref.'));
       my $user       = $env{'user.name'};
       my $domain     = $env{'user.domain'};
       my %userenv = &Apache::lonnet::get('environment',['course_init_display']);
       my $currvalue = 'whatsnew';
       my $firstselect = '';
       my $whatsnewselect = 'checked="checked"';
       if (exists($userenv{'course_init_display'})) {
           if ($userenv{'course_init_display'} eq 'firstres') {
               $currvalue = 'firstres';
               $firstselect = 'checked="checked"';
       $whatsnewselect = '';
           }
       }
       my %pagenames = &Apache::lonlocal::texthash(
                          firstres => 'First resource',
                          whatsnew => "What's New Page",
                       );
       my $whatsnew_off=&mt('Display the [_1]first resource[_2] in the course.','<b>','</b>');
       my $whatsnew_on=&mt("Display the [_1]What's New Page[_2] - a summary of items in the course which require attention.",'<b>','</b>');
   
       $r->print('<br /><b>'
                .&mt('Set the default page to be displayed when you select a course role')
                .'</b>&nbsp;'
                .&mt('(Currently: [_1])',$pagenames{$currvalue})
                .'<br />'
                .&mt("The global user preference you set for your courses can be overridden in an individual course by setting a course specific setting via the [_1]What's New Page[_2] in the course.",'<i>','</i>')
                .'<br /><br />'
       );
       $r->print(<<ENDLSCREEN);
   <form name="prefs" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="verify_and_change_coursepage" />
   <br />
   <label><input type="radio" name="newdisp" value="firstres" $firstselect /> $whatsnew_off</label><br />
   <label><input type="radio" name="newdisp" value="whatsnew" $whatsnewselect /> $whatsnew_on</label><input type="hidden" name="refpage" value="$env{'form.refpage'}" />
   ENDLSCREEN
       $r->print('<br /><br /><input type="submit" value="'.&mt('Save').'" />
   </form>');
   }
   
   sub verify_and_change_coursepage {
       my $r = shift;
       my $message='';
       my %lt = &Apache::lonlocal::texthash(
           'defs' => 'Default now set',
           'when' => 'when you select a course 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 the What's New Page", 
       );
       my $newdisp  = $env{'form.newdisp'};
       $message = '<b>'.$lt{'defs'}.'</b>: '.$lt{'when'}.', ';
       if ($newdisp eq 'firstres') {
           $message .= $lt{'ywbt'}.'<br />';
           &Apache::lonnet::put('environment',{'course_init_display' => $newdisp});
           &Apache::lonnet::appenv({'environment.course_init_display' => $newdisp});
       } else {
           $message .= $lt{'apwb'}.'<br />';
           &Apache::lonnet::del('environment',['course_init_display']);
           &Apache::lonnet::delenv('environment.course_init_display');
       }
       my $refpage = $env{'form.refpage'};
       if (($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?refpage='.
                           $refpage.'">'.$lt{'dasp'}.'</a></font>';
           }
       }
       &print_main_menu($r, &Apache::lonhtmlcommon::confirm_success($message));
   }
   
   sub print_main_menu {
       my ($r, $message) = @_;
       # Determine current authentication method
       my $user = $env{'user.name'};
       my $domain = $env{'user.domain'};
       my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
   
       # build the data structure for menu generation
   my $aboutmeurl='/adm/'.$env{'user.domain'}.'/'.$env{'user.name'}.'/aboutme';
   my $role = ($env{'user.adv'} ? 'Roles' : 'Course');
   my %permissions;
   if (&Apache::lonnet::usertools_access($user,$domain,'aboutme')) {
       $permissions{'aboutme'} = 'F';
   }
   my @menu=
       ({ categorytitle=>'Personal Data',
    items =>[
       { linktext => 'Personal Information Page',
    url => $aboutmeurl,
    permission => $permissions{'aboutme'},
    #help => 'Prefs_About_Me',
    icon => 'system-users.png',
    linktitle => 'Edit information about yourself that should be displayed on your public profile.'
       },
       { linktext => 'Screen Name',
    url => '/adm/preferences?action=changescreenname',
    permission => 'F',
    #help => 'Prefs_Screen_Name_Nickname',
    icon => 'preferences-desktop-font.png',
    linktitle => 'Change the name that is displayed in your posts.'
       },
    ]
       },
       { categorytitle=>'Page Display Settings',
    items =>[
       { linktext => 'Color Scheme',
    url => '/adm/preferences?action=changecolors',
    permission => 'F',
    #help => 'Change_Colors',
    icon => 'preferences-desktop-theme.png',
    linktitle => 'Change LON-CAPA default colors.'
       },
       { linktext => 'Menu Display',
    url => '/adm/preferences?action=changeicons',
    permission => 'F',
    #help => '',
    icon => 'preferences-system-windows.png',
    linktitle => 'Change whether the menus are displayed with buttons, icons or icons and text.'
       }
   
    ]
       },
       { categorytitle=>'Content Display Settings',
    items =>[
       { linktext => 'Language',
    url => '/adm/preferences?action=changelanguages',
    permission => 'F',
    #help => 'Prefs_Language',
    icon => 'preferences-desktop-locale.png',
    linktitle => 'Choose the default language for this user.'
       },
       { linktext => 'WYSIWYG Editor',
    url => '/adm/preferences?action=changewysiwyg',
    permission => 'F',
    #help => '',
    icon => 'edit-select-all.png',
    linktitle => 'Enable or disable the WYSIWYG-Editor.'
       },
       { linktext => $role.' Page',
    url => '/adm/preferences?action=changerolespref',
    permission => 'F',
    #help => '',
    icon => 'sctr.png',
    linktitle => 'Configure the roles hotlist.'
       },
       { linktext => 'Display of Scientific Equations',
    url => '/adm/preferences?action=changetexenginepref',
    permission => 'F',
    #help => '',
    icon => 'stat.png',
    linktitle => 'Change how Scientific Equations are displayed.'
       },
    ]
       },
       { categorytitle=>'Message Management',
    items =>[
       { linktext => 'Messages &amp; Notifications',
    url => '/adm/preferences?action=changemsgforward',
    permission => 'F',
    #help => 'Prefs_Messages',
    icon => 'mail-reply-all.png',
    linktitle => 'Change messageforwarding or notifications settings.'
       },
       { linktext => 'Discussion Display',
    url => '/adm/preferences?action=changediscussions',
    permission => 'F',
    #help => 'Change_Discussion_Display',
    icon => 'mail-message-new.png',
    linktitle => 'Set display preferences for discussion posts for both discussion boards and individual resources in all your courses.'
       },
    ]
       },
       { categorytitle=>'Other',
    items =>[
       { linktext => 'Register Response Devices (&quot;Clickers&quot;)',
    url => '/adm/preferences?action=changeclicker',
    permission => 'F',
    #help => '',
    icon => 'network-workgroup.png',
    linktitle => 'Register your clicker.'
       },
    ]
       },
       );
   
       if ($currentauth =~ /^(unix|internal):/) {
   push(@{ $menu[0]->{items} }, {
    linktext => 'Password',
    url => '/adm/preferences?action=changepass',
    permission => 'F',
    #help => 'Change_Password',
    icon => 'emblem-readonly.png',
    linktitle => 'Change your password.',
    });
       }
       if ($env{'environment.remote'} eq 'off') {
   push(@{ $menu[1]->{items} }, {
    linktext => 'Launch Remote Control',
    url => '/adm/remote?url=/adm/preferences&amp;action=launch',
    permission => 'F',
    #help => '',
    icon => 'remotecontrol.png',
    linktitle => 'Launch the remote control for LON-CAPA.',
    });
       }else{
   push(@{ $menu[1]->{items} }, {
    linktext => 'Collapse Remote Control',
    url => '/adm/remote?url=/adm/preferences&amp;action=collapse',
    permission => 'F',
    #help => '',
    icon => 'remotecontrol.png',
    linktitle => 'Collapse the remote control for LON-CAPA.',
    });
       }
       my %author_roles = &Apache::lonnet::get_my_roles($user,$domain,'userroles','',['au']);
       if (keys(%author_roles) > 0) {
   push(@{ $menu[4]->{items} }, {
    linktext => 'Restrict Domain Coordinator Access',
    url => '/adm/preferences?action=changedomcoord',
    permission => 'F',
    #help => '',
    icon => 'system-lock-screen.png',
    linktitle => 'Restrict domain coordinator access.',
    });
       }
   
       if (&Apache::lonnet::allowed('whn',$env{'request.course.id'})
    || &Apache::lonnet::allowed('whn',$env{'request.course.id'}.'/'
       .$env{'request.course.sec'})) {
   push(@{ $menu[4]->{items} }, {
    linktext => 'Course Initialization',
    url => '/adm/preferences?action=changecourseinit',
    permission => 'F',
    #help => '',
    icon => 'edit-copy.png',
    linktitle => 'Set the default page to be displayed when you select a course role.',
    });
   
       }
       if (&can_toggle_debug()) {
   push(@{ $menu[4]->{items} }, {
    linktext => 'Toggle Debug Messages (Currently '.($env{'user.debug'} ? 'on)' : 'off)'),
    url => '/adm/preferences?action=debugtoggle',
    permission => 'F',
    #help => '',
    icon => 'blog.png',
    linktitle => 'Toggle Debug Messages.',
    });
       }   
   
       $r->print(&Apache::loncommon::start_page('My Space'));
       $r->print(Apache::lonhtmlcommon::breadcrumbs('Change Preferences'));
       $r->print($message);
       $r->print(Apache::lonhtmlcommon::generate_menu(@menu));
       $r->print(Apache::loncommon::end_page());
   }
   
 ######################################################  ######################################################
 #            other handler subroutines               #  #            other handler subroutines               #
 ######################################################  ######################################################
   
   
 ################################################################  ################################################################
 #                          Main handler                        #  #                          Main handler                        #
 ################################################################  ################################################################
 sub handler {  sub handler {    
     my $r = shift;      my $r = shift;
     my $user = $ENV{'user.name'};      Apache::loncommon::content_type($r,'text/html');
     my $domain = $ENV{'user.domain'};  
     $r->content_type('text/html');  
     # Some pages contain DES keys and should not be cached.      # Some pages contain DES keys and should not be cached.
     &Apache::loncommon::no_cache($r);      Apache::loncommon::no_cache($r);
     $r->send_http_header;      $r->send_http_header;
     return OK if $r->header_only;      return OK if $r->header_only;
     # Spit out the header      #
     if ($ENV{'form.action'} eq 'changepass') {      Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
  &passwordchanger($r);                                     ['action','wysiwyg','returnurl','refpage']);
     } elsif ($ENV{'form.action'} eq 'verify_and_change_pass') {      #
  &verify_and_change_password($r);      Apache::lonhtmlcommon::clear_breadcrumbs();
     } elsif ($ENV{'form.action'} eq 'changescreenname') {      Apache::lonhtmlcommon::add_breadcrumb
           ({href => '/adm/preferences',
             text => 'Set User Preferences',
             help =>
             'Prefs_About_Me,Prefs_Language,Prefs_Screen_Name_Nickname,Change_Colors,Change_Password,Prefs_Messages,Change_Discussion_Display'});
       if(!exists $env{'form.action'}) {
       &print_main_menu($r);
       }elsif($env{'form.action'} eq 'changepass'){
           &passwordchanger($r);
       }elsif($env{'form.action'} eq 'verify_and_change_pass'){
           &verify_and_change_password($r);
       }elsif($env{'form.action'} eq 'changescreenname'){
         &screennamechanger($r);          &screennamechanger($r);
     } elsif ($ENV{'form.action'} eq 'verify_and_change_screenname') {      }elsif($env{'form.action'} eq 'verify_and_change_screenname'){
         &verify_and_change_screenname($r);          &verify_and_change_screenname($r);
     } else {      }elsif($env{'form.action'} eq 'changemsgforward'){
  $r->print(<<ENDHEADER);          &msgforwardchanger($r);
 <html>      }elsif($env{'form.action'} eq 'verify_and_change_msgforward'){
 <head>          &verify_and_change_msgforward($r);
 <title>LON-CAPA Preferences</title>      }elsif($env{'form.action'} eq 'changecolors'){
 </head>          &colorschanger($r);
 <body bgcolor="#FFFFFF" >      }elsif($env{'form.action'} eq 'verify_and_change_colors'){
 <h1>Preferences for $user</h1>          &verify_and_change_colors($r);
 <h3>$user is a member of domain $domain</h3>      }elsif($env{'form.action'} eq 'changelanguages'){
 ENDHEADER          &languagechanger($r);
  # Determine current authentication method      }elsif($env{'form.action'} eq 'verify_and_change_languages'){
  my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);          &verify_and_change_languages($r);
  if ($currentauth =~ /^(unix|internal):/) {      }elsif($env{'form.action'} eq 'changewysiwyg'){
     $r->print(<<ENDPASSWORDFORM);          &wysiwygchanger($r);
 <form name="client" action="/adm/preferences" method="post">      }elsif($env{'form.action'} eq 'set_wysiwyg'){
 <input type="hidden" name="action" value="changepass">          &verify_and_change_wysiwyg($r);
 <input type="submit" value="Change password">      }elsif($env{'form.action'} eq 'changediscussions'){
 </form>          &discussionchanger($r);
 ENDPASSWORDFORM      }elsif($env{'form.action'} eq 'verify_and_change_discussion'){
 # Change screen name          &verify_and_change_discussion($r);
     $r->print(<<ENDSCREENNAMEFORM);      }elsif($env{'form.action'} eq 'changerolespref'){
 <form name="client" action="/adm/preferences" method="post">          &rolesprefchanger($r);
 <input type="hidden" name="action" value="changescreenname">      }elsif($env{'form.action'} eq 'verify_and_change_rolespref'){
 <input type="submit" value="Change anonymous discussion screen name">          &verify_and_change_rolespref($r);
 </form>      }elsif($env{'form.action'} eq 'changetexenginepref'){
 ENDSCREENNAMEFORM          &texenginechanger($r);
             # Other preference setting code should be added here      }elsif($env{'form.action'} eq 'verify_and_change_texengine'){
  }          &verify_and_change_texengine($r);
       }elsif($env{'form.action'} eq 'changeicons'){
           &iconchanger($r);
       }elsif($env{'form.action'} eq 'verify_and_change_icons'){
           &verify_and_change_icons($r);
       }elsif($env{'form.action'} eq 'changeclicker'){
           &clickerchanger($r);
       }elsif($env{'form.action'} eq 'verify_and_change_clicker'){
           &verify_and_change_clicker($r);
       }elsif($env{'form.action'} eq 'changedomcoord'){
           &domcoordchanger($r);
       }elsif($env{'form.action'} eq 'verify_and_change_domcoord'){
           &verify_and_change_domcoord($r);
       }elsif($env{'form.action'} eq 'lockwarning'){
           &lockwarning($r);
       }elsif($env{'form.action'} eq 'verify_and_change_locks'){
           &verify_and_change_lockwarning($r);
       }elsif($env{'form.action'} eq 'changecourseinit'){
           &coursedisplaychanger($r);
       }elsif($env{'form.action'} eq 'verify_and_change_coursepage'){
           &verify_and_change_coursepage($r);
       }elsif($env{'form.action'} eq 'debugtoggle'){
           if (&can_toggle_debug()) {
               &toggle_debug();
           }
    &print_main_menu($r);
       }
   
       # Properly end the HTML page of all preference pages
       # started in each sub routine
       # Exception: print_main_menu has its own end_page call
       unless (!exists $env{'form.action'} ||
               $env{'form.action'} eq 'debugtoggle') {
           $r->print(&Apache::loncommon::end_page());
     }      }
     $r->print(<<ENDFOOTER);  
 </body>  
 </html>  
 ENDFOOTER  
     return OK;      return OK;
 }   }
   
   sub toggle_debug {
       if ($env{'user.debug'}) {
           &Apache::lonnet::delenv('user.debug');
       } else {
           &Apache::lonnet::appenv({'user.debug' => 1});
       }
   }
   
   sub can_toggle_debug {
       my $can_toggle = 0;
       my $page = 'toggledebug';
       if (&LONCAPA::lonauthcgi::can_view($page)) {
           $can_toggle = 1;
       } elsif (&LONCAPA::lonauthcgi::check_ipbased_access($page)) {
           $can_toggle = 1;
       }
       return $can_toggle;
   }
   
 1;  1;
 __END__  __END__

Removed from v.1.8  
changed lines
  Added in v.1.174


FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>