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- Don't include aboutmewrapper() for course personnel if syllabus is being viewed by a user who is not logged in.

    1: # The LearningOnline Network
    2: # Syllabus
    3: #
    4: # $Id: lonsyllabus.pm,v 1.64 2008/07/11 14:55:21 raeburn Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: package Apache::lonsyllabus;
   30: 
   31: use strict;
   32: use Apache::Constants qw(:common);
   33: use Apache::loncommon;
   34: use Apache::lonnet;
   35: use Apache::lontexconvert;
   36: use Apache::lonfeedback;
   37: use Apache::lonannounce;
   38: use Apache::lonlocal;
   39: use Apache::lonhtmlcommon;
   40: use Apache::lonspeller();
   41: use HTML::Entities();
   42: 
   43: sub handler {
   44:     my $r = shift;
   45:     &Apache::loncommon::content_type($r,'text/html');
   46:     $r->send_http_header;
   47:     return OK if $r->header_only;
   48: 
   49:     my $target=$env{'form.grade_target'};
   50: # --------------------------------------------------- Get course info from URL
   51:     my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
   52: # ------------------------------------------------------------ Get query string
   53:     &Apache::loncommon::get_unprocessed_cgi
   54:                         ($ENV{'QUERY_STRING'},['forcestudent','register','forceedit','wrapperdisplay']);
   55: # ----------------------------------------------------- Is this even a course?
   56:     my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
   57:     if ($homeserver eq 'no_host') {
   58:         &Apache::loncommon::content_type($r,'text/html');
   59:         $r->send_http_header;
   60:       	&Apache::loncommon::simple_error_page($r,'No syllabus available',
   61: 					      'No syllabus available');
   62:         return OK;
   63:     }
   64: # ------------------------------------- There is such a course, get environment
   65:     my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
   66: 
   67: # ------------------------------------------------------------ Print the screen
   68: 
   69:     if ($target eq 'tex') {
   70: 	$r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
   71:     } 
   72: # -------------------------------------------------- Let's see who handles this
   73:     my $externalsyllabus=$courseenv{'externalsyllabus'};
   74: 
   75:     if ($externalsyllabus=~/\w/) {
   76: 	
   77:        if ($env{'form.wrapperdisplay'} eq 'menu') {
   78: 	   $r->print(&Apache::lonwrapper::simple_menu());
   79:        } else {	    
   80: 	   $r->print(&Apache::lonwrapper::wrapper("/public/$cdom/$cnum/syllabus?wrapperdisplay=menu",
   81: 						   $externalsyllabus));
   82:        }
   83:        return OK;
   84:      } 
   85: 
   86: # ------------------------------ The buck stops here: internal syllabus display
   87: # --------------------------------------------------------- The syllabus fields
   88:     my %syllabusfields=&Apache::lonlocal::texthash(
   89:        'aaa_instructorinfo' => 'Instructor Information',
   90:        'bbb_description'    => 'Course Description',
   91:        'ccc_prereq'         => 'Prerequisites',
   92:        'cdc_classhours'     => 'Class Hours',
   93:        'ddd_officehours'    => 'Office Hours',
   94:        'eee_helproom'       => 'Helproom Hours',
   95:        'efe_projectinfo'    => 'Project Information',
   96:        'fff_examinfo'       => 'Exam Information',
   97:        'fgf_deadlines'      => 'Deadlines',
   98:        'ggg_grading'        => 'Grading Information',
   99:        'hhh_readings'       => 'Readings',
  100:        'iii_coursepack'     => 'Coursepack',
  101:        'jjj_weblinks'       => 'Web Links',
  102:        'kkk_textbook'       => 'Textbook',
  103:        'lll_includeurl'     => 'URLs To Include in Syllabus');
  104: # --------------------------------------------------------------- Force Student
  105:     my $forcestudent='';
  106:     if ($env{'form.forcestudent'}) { $forcestudent='student'; };
  107:     my $forceedit='';
  108:     if ($env{'form.forceedit'}) { $forceedit='edit'; }
  109:        
  110: # ----------------------------------------------------------------- Make header 
  111:     if ($target ne 'tex') {
  112: 	my $rss_link = &Apache::lonrss::rss_link($cnum,$cdom);
  113: 	my $start_page = 
  114: 	    &Apache::loncommon::start_page("Syllabus", $rss_link,
  115: 					   {'function'       => $forcestudent,
  116: 					    'domain'         => $cdom,
  117: 					    'force_register' =>
  118: 						$env{'form.register'},});
  119: 
  120: 	$r->print($start_page.'<h1>'.$courseenv{'description'}.'</h1><h3>'.
  121: 		  &Apache::lonnet::domain($cdom,'description').'</h3>');
  122:     } else {
  123: 	$r->print('\noindent{\large\textbf{'.$courseenv{'description'}.'}}\\\\\\\\\textbf{'.
  124: 		  &Apache::lonnet::domain($cdom,'description').'}\\\\');
  125:     }
  126: # -------------------------------------------------------------- Announcements?
  127:     my $day = &Apache::lonannounce::showday(time,2,
  128: 			 &Apache::lonannounce::readcalendar($cdom.'_'.$cnum));
  129:     if ($target ne 'tex') {
  130: 	$r->print($day. &Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit));
  131:     } else {
  132: 	$r->print(&Apache::lonxml::xmlparse($r,'tex',$day));
  133:     }
  134: 
  135: # -------------------------------------------------------- Get course personnel
  136:     my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
  137:     if ($target ne 'tex') {
  138: 	$r->print(&Apache::loncommon::start_data_table());
  139:     } else {
  140: 	$r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
  141:     }
  142:     foreach my $element (sort keys %coursepersonnel) {
  143: 	if ($target ne 'tex') {
  144: 	    $r->print(&Apache::loncommon::start_data_table_row().
  145: 		      '<td>'.$element.'</td><td>');
  146: 	} else {
  147: 	    $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & '); 
  148: 	}
  149:         foreach (split(/\,/,$coursepersonnel{$element})) {
  150: 	    my ($puname,$pudom)=split(/\:/,$_);
  151: 	    if ($target ne 'tex') {
  152:                 my $courseperson = &Apache::loncommon::plainname($puname,$pudom);
  153:                 if (($env{'user.name'} eq '') || ($env{'user.name'} eq 'public') ||
  154:                     ($env{'user.domain'} eq '') || ($env{'user.domain'} eq 'public')) {
  155: 		    $r->print(' '.$courseperson);
  156:                 } else {
  157:                     $r->print(' '.&Apache::loncommon::aboutmewrapper($courseperson),
  158:                               $puname,$pudom);
  159:                 }
  160: 	    } else {
  161: 		$r->print(' '.&Apache::loncommon::plainname($puname,
  162:                               $pudom).' ');
  163: 	    }
  164: 	}
  165: 	if ($target ne 'tex') {
  166: 	    $r->print('</td>'.&Apache::loncommon::end_data_table_row());
  167: 	} else {
  168: 	    $r->print('\\\\ \hline');
  169: 	}
  170:     }
  171:     if ($target ne 'tex') {
  172: 	$r->print(&Apache::loncommon::end_data_table());
  173:     } else {
  174: 	$r->print('\end{tabular}\\\\');
  175:     }
  176: # ---------------------------------------------------------- Load syllabus info
  177:     my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
  178:     my $allowed=0;
  179:     my $privileged=0;
  180: 
  181: # This handler might be called anonymously ...
  182: # ----------------------------------------------------- Only if not public call
  183:     if ($env{'user.environment'}) {
  184: # does this user have privileges to post, etc?
  185:        if ($env{'request.course.id'}
  186: 	   && $cdom eq $env{'course.'.$env{'request.course.id'}.'.domain'}
  187: 	   && $cnum eq $env{'course.'.$env{'request.course.id'}.'.num'}) {
  188:           $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
  189: 	  $privileged=$allowed;
  190: 	  if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
  191: 	      $forcestudent='student';
  192: 	  }
  193:           if ($forcestudent or $target eq 'tex') { $allowed=0; }
  194:        }
  195:        if ($allowed) {
  196:           $r->print('<p>'.
  197: &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes',&mt('Help with filling in text boxes')).'</p><p>'.&mt('This syllabus can be publicly viewed at')
  198: 		    .' <tt>http://'.
  199: 		    &Apache::lonnet::hostname($homeserver).$r->uri.'</tt>'.
  200:                &Apache::loncommon::help_open_topic('Syllabus_ExtLink').'</p>'.
  201:           '<p>'.&mt('You can specify an external URL as Syllabus in the [_1].','<a href="/adm/parmset?action=crsenv">'.&mt('Course Parameters').'</a>').'</p>'.
  202: 	  '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.
  203: &mt('Show Public View').'</font></a>'.
  204:           &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').
  205:           '</p>');
  206:       } elsif ($privileged) {
  207: 	  if ($target ne 'tex') {
  208: 	      $r->print('<p><a href="'.$r->uri.'?forceedit=1"><font size="+1">'.
  209: 			&mt('Edit').'</font></a>'); 
  210: 	  }
  211:       }
  212:        if (($allowed) && ($env{'form.storesyl'})) {
  213: 	   foreach my $syl_field (keys(%syllabusfields)) {
  214:                my $field=$env{'form.'.$syl_field};
  215: 	       chomp($field);
  216:                $field=~s/\s+$//s;
  217: 	       $field=~s/^\s+//s;
  218: 	       $field=~s/\<br\s*\/*\>$//s;
  219: 	       $field=&Apache::lonfeedback::clear_out_html($field,1);
  220: 	       $syllabus{$syl_field}=$field;
  221:                if ($syl_field eq 'lll_includeurl') { # clean up included URLs
  222:                   my $field='';
  223: 	          foreach my $value (split(/\n/,$syllabus{$syl_field})) {
  224: 		      my $url=$value;
  225: # get rid of leading and trailing spaces
  226:                       $url=~s/^\s+//;
  227:                       $url=~s/\s+$//;
  228:                       if ($url=~m|^http://([^/]+)/(.+)$|) {
  229: 			  my $host = $1;
  230:                           my $remainder=$2;
  231: # remove the hostname from internal URLs
  232: 			  my $hostname = &Apache::lonnet::hostname($host);
  233: 			  my %all_hostnames = &Apache::lonnet::all_hostnames();
  234: 		          foreach my $possible_host (keys(%all_hostnames)) {
  235:                               if ($possible_host =~ /\Q$hostname\E/i) {
  236: 			         $url=$remainder;
  237: 			      }
  238: 		          }
  239: 		      }
  240: # norm internal URLs
  241:                       unless ($url=~/^http\:/) {
  242: 		          $url=&Apache::lonnet::clutter($url);
  243:                       }
  244: # re-assemble field
  245:                       if ($url) {
  246: 		          $field.=$url."\n";
  247:                       }
  248: 		  }
  249:                   $syllabus{$syl_field}=$field;
  250: 	      }
  251:            }
  252:            $syllabus{'uploaded.domain'}=$env{'user.domain'};
  253:            $syllabus{'uploaded.name'}=$env{'user.name'};
  254:            $syllabus{'uploaded.lastmodified'}=time;
  255:            &Apache::lonnet::put('syllabus',\%syllabus,$cdom,$cnum);
  256:        }
  257:     }
  258: # ---------------------------------------------------------------- Get syllabus
  259:     if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
  260:        my $lastmod=$syllabus{'uploaded.lastmodified'};
  261:        $lastmod=($lastmod?&Apache::lonlocal::locallocaltime($lastmod):&mt('never'));
  262:        my $who = &Apache::loncommon::aboutmewrapper(
  263:                     &Apache::loncommon::plainname($syllabus{'uploaded.name'},
  264:                      $syllabus{'uploaded.domain'}),$syllabus{'uploaded.name'},
  265:                      $syllabus{'uploaded.domain'});
  266:        if ($target ne 'tex') {
  267: 	   $r->print('<table><tr><td>'.&mt('Last updated').':</td><td>'.
  268: 		     $lastmod.'</td><td>'.
  269: 		     ($who ? &mt('by').' '.$who
  270:                            : '' ).
  271: 		     '</td></tr></table><p>');
  272:        } else {
  273: 	   $r->print('\\\\ '.&mt('Last updated').': '.$lastmod.' '.
  274: 		     ($who? &mt('by').'\\\\ '.
  275: 		            &Apache::loncommon::plainname($syllabus{'uploaded.name'},$syllabus{'uploaded.domain'})
  276: 		          :'')
  277: 		     .'\\\\');
  278:        }
  279:        if ($allowed) {
  280: 	   $r->print('<form method="post">'.
  281: 		     '<input type="hidden" name="forceedit" value="edit" />');
  282:        }
  283:        my @htmlids=();
  284:        foreach my $field (sort(keys(%syllabusfields))) {
  285: 	   if (($syllabus{$field}=~/\w/) || ($allowed)) {
  286: 	       my $message=$syllabus{$field};
  287: 	       if ($field eq 'lll_includeurl') { # this is the "included" field
  288: 		   my $urls=$message;
  289: 		   $message='';
  290: 		   foreach my $filelink (split(/\n/,$urls)) {
  291: 		       my $output='';
  292: # embed style?
  293: 		       my ($curfext)=($filelink=~/\.([^\.]+)$/);
  294: 		       my $embstyle=&Apache::loncommon::fileembstyle($curfext);
  295: 		       if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {
  296: # make ssi call and remove everything but the body contents
  297: 			   $output=&Apache::lonnet::ssi_body($filelink);
  298: 		       } elsif ($embstyle eq 'img') {
  299: # embed as an image
  300: 			   $output='<img src="'.$filelink.'" />';
  301: 		       }
  302: 		       if ($target ne 'tex') {
  303: 			   $message.='<p>'.$output.'</p>';
  304: 		       } else {
  305: 			   $message.=' '.&Apache::lonxml::xmlparse($r,'tex','<p>'.$output.'</p>').' ';
  306: 		       }      
  307: 		   }
  308: 		   if ($allowed) {
  309: 		       $r->print('<h3>'.$syllabusfields{$field}.
  310: 				 &Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>'.
  311: 				 '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.&mt('Show Public View').'</font></a>'.
  312: 				 &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
  313: 		   } else {
  314: 		       $r->print($message);
  315: 		   } 
  316: 	       } else {
  317: 		   &Apache::lonfeedback::newline_to_br(\$message);
  318: 		   $message =~s|(https*://[^\s]+)|<a href="$1"><tt>$1</tt></a>|g;
  319: 		   if ($allowed) {
  320: 		       $message=&Apache::lonspeller::markeduptext($message);
  321: 		   }
  322: 		   $message=&Apache::lontexconvert::msgtexconverted($message);
  323: 		   if ($target ne 'tex') {
  324: 		       $r->print('<h3>'.$syllabusfields{$field}.'</h3><blockquote>'.
  325: 				 $message.'</blockquote>');
  326: 		   } else {
  327: 		       $r->print('\\\\\textbf{'.$syllabusfields{$field}.'}\\\\'.
  328: 				 &Apache::lonxml::xmlparse($r,'tex',$message).'\\\\');
  329: 		   }
  330: 		   push(@htmlids,$field);
  331: 	       }
  332: 	       if ($allowed) {
  333: 		   $r->print('<br /><textarea cols="80" rows="12" name="'.$field.'" id="'.$field.'">'.
  334: 			     &HTML::Entities::encode($syllabus{$field},'"&<>').
  335: 			     '</textarea> <input type="submit" name="storesyl" value="'.&mt('Save').'" />');
  336: 	       }
  337: 	   }
  338:        }
  339:        if ($allowed) {
  340: 	   $r->print('</form>'.
  341: 		     &Apache::lonhtmlcommon::htmlareaselectactive(@htmlids));
  342:        }
  343:        if ($target ne 'tex') {$r->print('</p>');} else {$r->print('\\\\');}
  344:     } else {
  345: 	if ($target ne 'tex') {$r->print('<p>');} else {$r->print('\par ');} 
  346: 	$r->print(&mt('No syllabus information provided.'));
  347: 	if ($target ne 'tex') {$r->print('</p>');}
  348:     }
  349:     if ($target ne 'tex') {
  350: 	$r->print(&Apache::loncommon::end_page());
  351:     } else {
  352: 	$r->print('\end{document}');
  353:     }
  354:     return OK;
  355: } 
  356: 
  357: 1;
  358: __END__