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Diff for /rat/lonpageflip.pm between versions 1.71 and 1.77

version 1.71, 2006/09/19 19:03:27 version 1.77, 2008/11/20 15:19:05
Line 27 Line 27
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
   
   
   
 package Apache::lonpageflip;  package Apache::lonpageflip;
   
 use strict;  use strict;
Line 87  sub hash_src { Line 89  sub hash_src {
 }  }
   
 sub move {  sub move {
       my ($next,$endupmap,$direction) = @_;
       my $safecount=0;
       my $allowed=0;
       do {
    ($next,$endupmap)=&get_next_possible_move($next,$endupmap,$direction);
   
    my $url = $hash{'src_'.$next};
    my ($mapid,$resid)=split(/\./,$next);
    my $symb = &Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},
    $resid,$url);
    if ($url eq '' || $symb eq '') {
       $allowed = 0;
    } else {
       my $priv = &Apache::lonnet::allowed('bre',$url,$symb);
       $allowed = (($priv eq 'F') || ($priv eq '2'));
    }
    $safecount++;
       } while (   ($next)
        && ($next!~/\,/)
        && (
       (!$hash{'src_'.$next})
    || (
           (!$env{'request.role.adv'})
        &&  $hash{'randomout_'.$next}
       )
    || (!$allowed)
    )
        && ($safecount<10000));
   
       return ($next,$endupmap);
   }
   
   sub get_next_possible_move {
     my ($rid,$mapurl,$direction)=@_;      my ($rid,$mapurl,$direction)=@_;
     my $startoutrid=$rid;      my $startoutrid=$rid;
   
Line 207  sub first_accessible_resource { Line 242  sub first_accessible_resource {
     if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db',      if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db',
     &GDBM_READER(),0640)) {      &GDBM_READER(),0640)) {
  $furl=$hash{'first_url'};   $furl=$hash{'first_url'};
         if (!&Apache::lonnet::allowed('bre',$furl)) {   my %args;
    my ($url,$args) = split(/\?/,$furl);
    foreach my $pair (split(/\&/,$args)) {
       my ($name,$value) = split(/=/,$pair);
       $args{&unescape($name)} = &unescape($value);
    }
           if (!&Apache::lonnet::allowed('bre',$url,$args{'symb'})) {
 # Wow, we cannot see this ... move forward to the next one that we can see  # Wow, we cannot see this ... move forward to the next one that we can see
     my ($newrid,$newmap)=&move($hash{'first_rid'},$hash{'first_mapurl'},'forward');      my ($newrid,$newmap)=&move($hash{'first_rid'},$hash{'first_mapurl'},'forward');
 # Build the new URL  # Build the new URL
     my ($newresid,$newmapid)=split(/\./,$newrid);      my ($newmapid,$newresid)=split(/\./,$newrid);
     my $symb=&Apache::lonnet::encode_symb($newmap,$newresid,$hash{'src_'.$newrid});      my $symb=&Apache::lonnet::encode_symb($newmap,$newresid,$hash{'src_'.$newrid});
     $furl=&add_get_param($hash{'src_'.$newrid},{ 'symb' => $symb });      $furl=&add_get_param($hash{'src_'.$newrid},{ 'symb' => $symb });
     if ($hash{'encrypted_'.$newrid}) {      if ($hash{'encrypted_'.$newrid}) {
Line 342  sub handler { Line 383  sub handler {
               my $endupmap;                my $endupmap;
               ($next,$endupmap)=&move($rid,$startoutmap,$direction);                ($next,$endupmap)=&move($rid,$startoutmap,$direction);
 # -------------------------------------- Do we have one and only one empty URL?  # -------------------------------------- Do we have one and only one empty URL?
               my $safecount=0;  
               while (($next) && ($next!~/\,/) &&   
                      ((!$hash{'src_'.$next}) ||   
       ((!$env{'request.role.adv'}) && $hash{'randomout_'.$next}))  
                      && ($safecount<10000)) {  
                   ($next,$endupmap)=&move($next,$endupmap,$direction);  
                   $safecount++;  
               }  
 # We are now at at least one non-empty URL  # We are now at at least one non-empty URL
 # ----------------------------------------------------- Check out possibilities  # ----------------------------------------------------- Check out possibilities
               if ($next) {                if ($next) {
Line 413  sub handler { Line 446  sub handler {
    $redirectsymb='';     $redirectsymb='';
                         }                          }
                      }                       }
                      &Apache::lonnet::appenv('user.criticalcheck.time'=>time);                       &Apache::lonnet::appenv({'user.criticalcheck.time'=>time});
   }    }
   
   &Apache::loncommon::content_type($r,'text/html');    &Apache::loncommon::content_type($r,'text/html');
Line 497  ENDMENU Line 530  ENDMENU
 1;  1;
 __END__  __END__
   
   =pod
   
   =head1 NAME
   
   Apache::lonpageflip
   
   =head1 SYNOPSIS
   
   Deals with forward, backward, and other page flips.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 OVERVIEW
   
   (empty)
   
   =head1 SUBROUTINES
   
   =over cleanup()
   
   =item addrid()
   
   =item fullmove()
   
   =item hash_src()
   
   =item move()
   
   =item get_next_possible_move()
   
   =item navlaunch()
   
   =item first_accessible_resource()
   
   =item handler()
   
   =back
   
   =cut
   
   
   
Removed from v.1.71  
changed lines
  Added in v.1.77

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